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502
| 28,606
|
Projectively equivalent metrics, exact transverse line fields and the geodesic flow on the ellipsoid
|
Commentarii Mathematici Helvetici
|
We give a new proof of the complete integrability of the geodesic flow on the ellipsoid (in Euclidean, spherical or hyperbolic space). The proof is based on the construction of a metric on the ellipsoid whose non-parameterized geodesics coincide with those of the standard metric. This new metric is induced by the hyperbolic metric inside the ellipsoid (Klein's model).
|
["Tabachnikov S."]
|
["6603813387"]
| 1,999
| 24
|
["Exact transverse line fields", "Geodesic flow", "Riemannian and Finsler metrics", "Symplectic and contact structures"]
|
10.1007/s000140050091
|
Article
|
English
|
[{"id": "60004862", "name": "University of Arkansas, Department of Mathematics, Fayetteville, AR 72701, United States", "fullName": "University of Arkansas, Department of Mathematics", "reference": "a", "fullAddress": "Fayetteville, AR 72701, United States", "departmentId": "103283828"}]
|
503
| 28,660
|
A Metal-Amorphous Silicon-Germanium Alloy Schottky Barrier for Infrared Optoelectronic IC on Glass Substrate Application
|
IEEE Transactions on Electron Devices
|
The effects of material and structure parameters on amorphous silicon-germanium alloy Schottky barrier diode’s responsivity have been investigated in detail. The effects contradict each other. A compromise shall be made in selecting parameters for construction of a Si<sub>1-x</sub>Ge<sub>x</sub>: H Schottky barrier for IR detector. The optimized amorphous silicon-ger-manium alloy Schottky diode using x = 0.43 alloy with a 900-nm thickness i-layer was found to have a peak at 850 nm with responsivity of 0.6 A/W under — 2-V bias. The diode also has a response time of 33 ps and slight photodegradation. Thus the diode becomes a candidate for manufacturing the infrared OEIC (Optoelectronic Integrated Circuit) on glass substrate in applications which require size, reproducibility, and low cost more than sensitivity. © 1992 IEEE
|
["Fang Y.K.", "Hwang S.-B.", "Chen K.-H.", "Liu C.-R."]
|
["7403457582", "7404626287", "7410238563", "7409793335"]
| 1,992
| 29
|
[]
|
10.1109/16.137314
|
Article
|
English
|
[{"id": "60014982", "name": "VLSI Technology Laboratory, Electrical Engineering Department, National Cheng Kung University, Tainan, Taiwan, Taiwan", "fullName": "VLSI Technology Laboratory, Electrical Engineering Department, National Cheng Kung University", "reference": "a", "fullAddress": "Tainan, Taiwan, Taiwan", "departmentId": "112906435"}, {"id": "60022847", "name": "Thin Film Technology Laboratory, Materials Research Laboratories Industrial Technology Research Institute, Chutung, Hsinchu, 31015, Taiwan, Taiwan", "fullName": "Thin Film Technology Laboratory, Materials Research Laboratories Industrial Technology Research Institute, Chutung", "reference": "b", "fullAddress": "Hsinchu, 31015, Taiwan, Taiwan", "departmentId": "115679884"}]
|
504
| 28,668
|
Strongly definitizable linear pencils in Hilbert space
|
Integral Equations and Operator Theory
|
Selfadjoint linear pencils ΛF-G are considered which have discrete spectrum and neither F nor G is definite. Several characterizations are given of a "strongly definitizable" property when F and G are bounded, and also when both operators are unbounded. The theory is applied to analysis of the stability of a linear second order initial-boundary value problem with boundary conditions dependent on the eigenvalue parameter. © 1993 Birkhäuser Verlag.
|
["Lancaster P.", "Shkalikov A.", "Ye Q."]
|
["7007016573", "6603116661", "35281132700"]
| 1,993
| 25
|
["AMS Subject Classification: 47A70, 47E05"]
|
10.1007/BF01200290
|
Article
|
English
|
[{"id": "60002306", "name": "Department of Mathematics and Statistics, The University of Calgary, Calgary, T2N 1N4, Alberta, Canada", "fullName": "Department of Mathematics and Statistics, The University of Calgary", "reference": "a", "fullAddress": "Calgary, T2N 1N4, Alberta, Canada", "departmentId": "100292156"}, {"id": "60007457", "name": "Department of Mathematics, Moscow State University, Moscow, Russian Federation", "fullName": "Department of Mathematics, Moscow State University", "reference": "b", "fullAddress": "Moscow, Russian Federation", "departmentId": "103409916"}, {"id": "60009697", "name": "Department of Applied Mathematics, The University of Manitoba, Winnipeg, R3T 2N2, Manitoba, Canada", "fullName": "Department of Applied Mathematics, The University of Manitoba", "reference": "c", "fullAddress": "Winnipeg, R3T 2N2, Manitoba, Canada", "departmentId": "103528551"}]
|
505
| 28,675
|
Quasilinear elliptic equations with vmo coefficients
|
Transactions of the American Mathematical Society
|
Strong solvability and uniqueness in Sobolev space are proved for the Dirichlet problem It is assumed that the coefficients of the quasilinear elliptic operator satisfy Carathéodory's condition, the a'i's are VMO functions with respect to x, and structure conditions on b are required. The main results are derived by means of the Aleksandrov-Pucci maximum principle and Leray-Schauder's fixed point theorem via a priori estimate for the L<sup>2n</sup>-norm of the gradient. © 1995 American Mathematical Society.
|
["Palagachev D.K."]
|
["6602793605"]
| 1,995
| 61
|
["A priori estimates", "Aleksandrov- Pucci maximum principle", "Leray-Schauder fixed point theorem", "Strong solution of elliptic PDE", "VMO"]
|
10.1090/S0002-9947-1995-1308019-6
|
Article
|
English
|
[{"id": "60019878", "name": "Department of Mathematics, Technological University of Sofia, Sofia, 1156, 8 \"Kl. Okhridski\" blv, Bulgaria", "fullName": "Department of Mathematics, Technological University of Sofia", "reference": "a", "fullAddress": "Sofia, 1156, 8 \"Kl. Okhridski\" blv, Bulgaria", "departmentId": "105444873"}]
|
506
| 28,691
|
A new method of measuring ΔΓ/Γ in the B<sup>0</sup><sub>s</sub> - B̄<sup>0</sup><sub>s</sub> system
|
European Physical Journal C
|
A new way to measure ΔΓ/Γ-in the B<sup>0</sup><sub>s</sub> - B̄<sup>0</sup><sub>s</sub> System based on a comparison of the measured B<sup>0</sup><sub>s</sub> and B<sup>0</sup><sub>d</sub> lifetimes is introduced. This allows to use data from all the experiments simultaniously. An upper limit of ΔΓ/Γ ≤ 0.24 at 95 % CL can be given. This is below the theoretical upper limit of 0.27.
|
["Hartkorn K.", "Moser H.-G."]
|
["6507247775", "35314973000"]
| 1,999
| 25
|
[]
|
10.1007/s100529901079
|
Article
|
English
|
[{"id": "60008743", "name": "Max-Planck-Institut für Physik, D-80805 München, Foehringer Ring 6, Germany", "fullName": "Max-Planck-Institut für Physik", "reference": "a", "fullAddress": "D-80805 München, Foehringer Ring 6, Germany", "departmentId": null}]
|
507
| 28,795
|
First evidence for the existence of instantons in the quantized SU(2) lattice vacuum
|
Nuclear Physics, Section B
|
Starting from Monte Carlo generated equilibrium gauge field configurations at β = 2.1 and 2.2 on a 6<sup>4</sup> lattice, representing the pysical vacuum, we systematically freeze the quantum fluctuations by means of successive relaxations. The result is that we obtain (approximate) solutions of the classical equations of motion, which turn out to have discrete values of the action S ≈ β2π<sup>2</sup>N, N = 0, 1, 2,.... in close agreement with the continuum (multi-) instanton solutions. We show that these "lattice (multi-) instantons" are localized in space-time, that they carry a topological charge <sub>|Q| = N</sub> and that they give rise to a number of fermion zero modes in accordance with the Atiyah-Singer index theorem. Finally, we estimate the "background topological susceptibility" from the distribution of lattice (multi-) instantons. © 1986.
|
["Ilgenfritz E.-M.", "laursen M.L.", "Müller-Preußker M.", "Schierholz G.", "Schiller H."]
|
["7005995243", "16484074400", "16441559900", "7004426010", "24552633800"]
| 1,986
| 137
|
[]
|
10.1016/0550-3213(86)90265-8
|
Article
|
English
|
[{"id": "60008042", "name": "Sektion Physik, Karl-Marx-Universität, Leipzig, Germany", "fullName": "Sektion Physik, Karl-Marx-Universität", "reference": "a", "fullAddress": "Leipzig, Germany", "departmentId": null}, {"id": "60030635", "name": "Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany", "fullName": "Deutsches Elektronen-Synchrotron DESY", "reference": "b", "fullAddress": "Hamburg, Germany", "departmentId": null}, {"id": "60000762", "name": "Sektion Physik, Humboldt-Universität, Berlin, Germany", "fullName": "Sektion Physik, Humboldt-Universität", "reference": "c", "fullAddress": "Berlin, Germany", "departmentId": null}, {"id": "60012345", "name": "Institut für Theoretische Physik der Universität, Kiel, Germany", "fullName": "Institut für Theoretische Physik der Universität", "reference": "d", "fullAddress": "Kiel, Germany", "departmentId": null}, {"id": "60030635", "name": "Institut für Hochenergiephysik, Akademie der Wissenschaften, Zeuthen, Germany", "fullName": "Institut für Hochenergiephysik, Akademie der Wissenschaften", "reference": "e", "fullAddress": "Zeuthen, Germany", "departmentId": null}]
|
508
| 28,821
|
Reconciling a small density parameter to inflation
|
Physics Letters B
|
A new scenario is proposed to reconcile a small density parameter to inflation by showing that the energy of scalar fields, acting as vacuum or dark matter, mimics the cosmological constant to make up for the deficit. Our approach, an extension of the decaying cosmological constant scenario, is natural requiring no extreme fine-tuning. One of the underlying mechanisms is a nonlinear effect known as relaxation oscillation. We may anticipate a periodic but probably sporadic large-scale structure of the universe. © 1991.
|
["Fujii Y.", "Nishioka T."]
|
["7403409937", "36817623800"]
| 1,991
| 21
|
[]
|
10.1016/0370-2693(91)91167-T
|
Article
|
English
|
[{"id": "60025272", "name": "Institute of Physics, University of Tokyo-Komaba, Meguro-ku, Tokyo, 153, Japan", "fullName": "Institute of Physics, University of Tokyo-Komaba", "reference": "a", "fullAddress": "Meguro-ku, Tokyo, 153, Japan", "departmentId": "104280085"}]
|
509
| 28,873
|
A reality check for data snooping
|
Econometrica
|
Data snooping occurs when a given set of data is used more than once for purposes of inference or model selection. When such data reuse occurs, there is always the possibility that any satisfactory results obtained may simply be due to chance rather than to any merit inherent in the method yielding the results. This problem is practically unavoidable in the analysis of time-series data, as typically only a single history measuring a given phenomenon of interest is available for analysis. It is widely acknowledged by empirical researchers that data snooping is a dangerous practice to be avoided, but in fact it is endemic. The main problem has been a lack of sufficiently simple practical methods capable of assessing the potential dangers of data snooping in a given situation. Our purpose here is to provide such methods by specifying a straightforward procedure for testing the null hypothesis that the best model encountered in a specification search has no predictive superiority over a given benchmark model. This permits data snooping to be undertaken with some degree of confidence that one will not mistake results that could have been generated by chance for genuinely good results.
|
["White H."]
|
["7402382523"]
| 2,000
| 732
|
["Bootstrap", "Data mining", "Forecast evaluation", "Model selection", "Multiple hypothesis testing", "Prediction"]
|
10.1111/1468-0262.00152
|
Article
|
English
|
[{"id": "123938990", "name": "Dept. of Economics, University of California, QuantMetrics RD Associates, United States", "fullName": "Dept. of Economics, University of California, QuantMetrics RD Associates", "reference": "a", "fullAddress": "United States", "departmentId": "125640248"}]
|
510
| 28,912
|
Numerical approach to nonlinear control design
|
Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME
|
The paper presents a new approach to designing tracking control of uncertain nonlinear plants. The approach is entirely based on numerical methods and corresponding recurrence relations. It results in recursive control laws that resolve plant nonlinearities and compensate all disturbances and parameter variations. Also, it enables a free shaping of the control error dynamics. Control algorithms based on the method of successive substitutions and the Newton’s method are studied in detail. Detailed description of an application and experimental evaluation is included. © 1996 ASME.
|
["Ostojic M."]
|
["7004933795"]
| 1,996
| 8
|
[]
|
10.1115/1.2802323
|
Article
|
English
|
[{"id": "60021178", "name": "Sony Systems Design Corporation, Tokyo, 108, 2F Takanawa Court, 3-13-1 Takanawa, Japan", "fullName": "Sony Systems Design Corporation", "reference": "a", "fullAddress": "Tokyo, 108, 2F Takanawa Court, 3-13-1 Takanawa, Japan", "departmentId": null}]
|
511
| 28,960
|
Innovation and inter-firm co-operation: The case of the West Midlands
|
Economics of Innovation and New Technology
|
Drawing upon the innovative milieux and industrial districts literature, the paper provides substantial empirical evidence that firms have a greater chance of being innovative if they co-operate with other firms over innovation, albeit undertaking no investment in RLD. This is an important result especially for small firms. In particular, the paper focuses on inter-firm cwperation along the supply chain, using a swey of firms in the West Midlands to investi-gate co-operation over innovation between suppliers and buyers. A probit model is used to test the link between innovation performance and four innovation inputs: R&D expenditure, R&D personnel, networking with suppliers and networking with client firms. © 2000 OPA (Ovuwas Publishers Associalion) N.V.
|
["Propris L.D."]
|
["6602419065"]
| 2,000
| 50
|
["Industrial district", "Innovation", "Innovative milieux", "Networking JEL Classification 031; R12", "Small firms"]
|
10.1080/10438590000000017
|
Article
|
English
|
[{"id": "60172646", "name": "Birmingham Business School, Research Centre for Industrial Strategy, Birmingham, B15 21T, United Kingdom", "fullName": "Birmingham Business School, Research Centre for Industrial Strategy", "reference": "a", "fullAddress": "Birmingham, B15 21T, United Kingdom", "departmentId": "104004038"}]
|
512
| 28,968
|
The low-temperature behavior of disordered magnets
|
Communications in Mathematical Physics
|
We map out the low-temperature phase diagrams of dilute Ising ferromagnets and predominantly ferromagnetic ferrites, obtaining nonperturbative and essentially optimal conditions on the density of ferromagnetic couplings required to maintain long-range order. We also study mappings of dilute antiferromagnets in a uniform field onto random field ferromagnets. For the randomly dilute systems, we prove that ferromagnetically ordered states exist at low temperature if the density of ferromagnetic couplings exceeds the (appropriately defined) percolation threshold, thereby extending the result of Georgii to three or more dimensions. We also show that, for these systems, as the temperature tends to zero, the magnetization approaches the percolation probability of the corresponding Bernoulli system. In two dimensions, we prove that low-temperature ordering persists in the presence of antiferromagnetic impurities if the ferromagnetic couplings percolate and if the density of antiferromagnetic couplings is bounded above by the order of the inverse square of the corresponding percolation correlation length. For these systems, we rigorously compute the first order decrease in the zero-temperature nominal spontaneous magnetization, in terms of derivatives of the percolation probability, thereby establishing the existence of ferrimagnetically ordered states. Finally, we introduce a model of a random ferrite which exhibits spontaneous magnetization anticorrelated with the boundary conditions. © 1985 Springer-Verlag.
|
["Chayes J.T.", "Chayes L.", "Fröhlich J."]
|
["6701746296", "7004106814", "57197581711"]
| 1,985
| 44
|
[]
|
10.1007/BF01206137
|
Article
|
English
|
[{"id": "60009982", "name": "Departments of Mathematics and Physics, Harvard University, Cambridge, 02138, MA, United States", "fullName": "Departments of Mathematics and Physics, Harvard University", "reference": "a", "fullAddress": "Cambridge, 02138, MA, United States", "departmentId": "103544906"}, {"id": "60027485", "name": "The Institute for Advanced Study, Princeton, 08540, NJ, United States", "fullName": "The Institute for Advanced Study", "reference": "b", "fullAddress": "Princeton, 08540, NJ, United States", "departmentId": null}]
|
513
| 28,984
|
Pressure Stability in Fractional Step Finite Element Methods for Incompressible Flows
|
Journal of Computational Physics
|
The objective of this paper is to analyze the pressure stability of fractional step finite element methods for incompressible flows that use a pressure Poisson equation. For the classical first-order projection method, it is shown that there is a pressure control which depends on the time step size, and therefore there is a lower bound for this time step for stability reasons. The situation is much worse for a second-order scheme in which part of the pressure gradient is kept in the momentum equation. The pressure stability in this case is extremely weak. To overcome these shortcomings, a stabilized fractional step finite element method is also considered, and its stability is analyzed. Some simple numerical examples are presented to support the theoretical results. © 2001 Academic Press.
|
["Codina R."]
|
["7005833654"]
| 2,001
| 189
|
[]
|
10.1006/jcph.2001.6725
|
Article
|
English
|
[{"id": "60007592", "name": "Univ. Politecnica de Catalunya, 08034 Barcelona, Jordi Girona 1-3, Edifici C1, Spain", "fullName": "Univ. Politecnica de Catalunya", "reference": "a", "fullAddress": "08034 Barcelona, Jordi Girona 1-3, Edifici C1, Spain", "departmentId": null}]
|
514
| 28,994
|
A level set approach to semicontinuous viscosity solutions for Cauchy problems
|
Communications in Partial Differential Equations
|
A level set formulation is presented to characterize a maximal solution of the Cauchy problem for the Hamilton-Jacobi equation with semicontinuous initial data in an explicit way. No convexity assumptions on Hamiltonians are imposed. The solution proposed in the present paper is interpreted as the level set of an auxiliary problem and called an L-solution. It turns out that our L-solution is consistent with a classical discontinuous viscosity solution and a bilateral viscosity solution. Moreover, our L-solution is unique and enjoy the comparison principle. The condition that initial data is really attained is also discussed. Copyright © 2001 by Marcel Dekker, Inc.
|
["Giga Y.", "Sato M.-H."]
|
["7003326857", "55725085100"]
| 2,001
| 18
|
[]
|
10.1081/PDE-100002379
|
Article
|
English
|
[{"id": "60014652", "name": "Department of Mathematics, Hokkaido University, Sapporo 060-0810, Japan", "fullName": "Department of Mathematics, Hokkaido University", "reference": "a", "fullAddress": "Sapporo 060-0810, Japan", "departmentId": "110705061"}, {"id": "60014729", "name": "Muroran Institute of Technology, Muroran 050-8585, 27-1 Mizumoto, Japan", "fullName": "Muroran Institute of Technology", "reference": "b", "fullAddress": "Muroran 050-8585, 27-1 Mizumoto, Japan", "departmentId": null}]
|
515
| 29,001
|
An improved J matrix engine for density functional theory calculations
|
Chemical Physics Letters
|
To evaluate the Coulomb interaction matrix in density functional theory (or Hartree-Fock theory) within a finite Gaussian type basis set, explicit evaluation of the two-electron integrals is not necessary. Instead, modified expressions can be developed directly for J matrix contributions from entire shell quartets of two-electron integrals. This can substantially reduce the computational cost. In this work we explore the use of the well-known McMurchie-Davidson recurrence relations to directly form J matrix contributions. Floating point operation counts and computer timings indicate that this approach yields significant improvements (typically a factor of two) over the previous J matrix engine.
|
["Shao Y.", "Head-Gordon M."]
|
["7201599012", "7004976399"]
| 2,000
| 43
|
[]
|
10.1016/S0009-2614(00)00524-8
|
Article
|
English
|
[{"id": "60025038", "name": "Department of Chemistry, University of California, Berkeley, Berkeley, CA 94720, United States", "fullName": "Department of Chemistry, University of California, Berkeley", "reference": "a", "fullAddress": "Berkeley, CA 94720, United States", "departmentId": "105292543"}]
|
516
| 29,054
|
Wealth, enterprise and credit policy
|
Economic Journal
|
Empirical evidence suggests that capital-market constraints prevent low-wealth individuals from setting up in business. This paper shows this finding to be consistent with socially excessive lending and an interest-rate tax being welfare-improving. One feature of the model, banks' inability to identify entrepreneurial quality, leads to excessive bank lending and investment in low-return projects. The reduction in the probability of bankruptcy lowers the cost of borrowing and eliminates deadweight costs and hence promotes entry. If the incentive effects are sufficiently large, wealth and the volume of entrepreneurial activity move together. A key result of the paper is to show that a market equilibrium in which there is a positive relationship between entry and the level of wealth is consistent with either subsidies to inactivity or taxes on interest raising welfare.
|
["De Meza D.", "Webb D."]
|
["56177883000", "7401528659"]
| 1,999
| 48
|
[]
|
10.1111/1468-0297.00424
|
Article
|
English
|
[{"id": "60003059", "name": "University of Exeter, London School of Economics, United Kingdom", "fullName": "University of Exeter, London School of Economics", "reference": "a", "fullAddress": "United Kingdom", "departmentId": null}]
|
517
| 29,134
|
Infrared vibration spectra of hydrogenated, deuterated, and tritiated amorphous silicon
|
Journal of Applied Physics
|
This article presents infrared absorption data of amorphous silicon alloys in which the hydrogen isotopes deuterium and tritium have been substituted for hydrogen. Silicon-deuterium and silicon-tritium vibration frequencies are related to silicon-hydrogen vibration frequencies by simple mass relationships. The silicon-deuterium wagging vibration is broadened and blueshifted due to strong coupling to the amorphous silicon network vibrations. © 1999 American Institute of Physics.
|
["Sidhu L.S.", "Kosteski T.", "Zukotynski S.", "Kherani N.P."]
|
["7003973846", "6603370721", "7004276110", "7003777139"]
| 1,999
| 28
|
[]
|
10.1063/1.369607
|
Article
|
English
|
[{"id": "60016849", "name": "Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ont. M5S 3G4, Canada", "fullName": "Department of Electrical and Computer Engineering, University of Toronto", "reference": "a", "fullAddress": "Toronto, Ont. M5S 3G4, Canada", "departmentId": "112270526"}, {"id": "60016435", "name": "Ontario Hydro Technologies, Toronto, Ont. M8Z 5S4, Canada", "fullName": "Ontario Hydro Technologies", "reference": "b", "fullAddress": "Toronto, Ont. M8Z 5S4, Canada", "departmentId": null}]
|
518
| 29,155
|
Competitiveness of manufacturing firms: An application of fuzzy weighted average
|
IEEE Transactions on Systems, Man, and Cybernetics Part A:Systems and Humans.
|
In order to attain a competitive edge in the world market-place, manufacturing companies must produce high-quality products at low cost. To achieve this, many companies have noticed that in addition to technology, management also plays a vital role. Following some previous studies, this paper devises a competitiveness index based on automation technology and manufacturing management for manufacturing firms. Since most measures are described subjectively by linguistic terms, a fuzzy set approach is adopted, in that the fuzzy measures from different criteria are weighted by their corresponding importance, which are also represented by fuzzy values. The fuzzy weighted average approach produces results which are more informative. To distinguish the superiority of the competitive power of different firms, a fuzzy ranking method is applied. As an illustration, the competitiveness indexes of 15 machinery firms in Taiwan are calculated and ranked. © 1999 IEEE.
|
["Kao C.", "Liu S.-T."]
|
["7403683420", "36625945000"]
| 1,999
| 33
|
[]
|
10.1109/3468.798071
|
Article
|
English
|
[{"id": "60014982", "name": "Department of Industrial Management, National Cheng Kung University, Tainan, Taiwan", "fullName": "Department of Industrial Management, National Cheng Kung University", "reference": "a", "fullAddress": "Tainan, Taiwan", "departmentId": "111715704"}]
|
519
| 29,178
|
A numerical approach to the approximate and the exact minimum rank of a covariance matrix
|
Psychometrika
|
A concept of approximate minimum rank for a covariance matrix is defined, which contains the (exact) minimum rank as a special case. A computational procedure to evaluate the approximate minimum rank is offered. The procedure yields those proper communalities for which the unexplained common variance, ignored in low-rank factor analysis, is minimized. The procedure also permits a numerical determination of the exact minimum rank of a covariance matrix, within limits of computational accuracy. A set of 180 covariance matrices with known or bounded minimum rank was analyzed. The procedure was successful throughout in recovering the desired rank. © 1991 The Psychometric Society.
|
["ten Berge J.M.F.", "Kiers H.A.L."]
|
["7004198790", "7006143202"]
| 1,991
| 105
|
["communality estimation", "factor analysis", "minimum rank"]
|
10.1007/BF02294464
|
Article
|
English
|
[{"id": "60010023", "name": "University of Groningen, Netherlands", "fullName": "University of Groningen", "reference": "a", "fullAddress": "Netherlands", "departmentId": null}]
|
520
| 29,197
|
Preservation of convergence of convex sets and functions in finite dimensions
|
Transactions of the American Mathematical Society
|
We study a convergence notion which has particular relevance for convex analysis and lends itself quite naturally to successive approximation schemes in a variety of areas. Motivated particularly by problems in optimization subject to constraints, we develop technical tools necessary for systematic use of this convergence in finite-dimensional settings. Simple conditions are established under which this convergence for sequences of sets, functions and subdifferentials is preserved under various basic operations, including, for example, those of addition and infimal convolution in the case of functions. © 1981 AMS.
|
["McLinden L.", "Bergstrom R.C."]
|
["6506831687", "57189290573"]
| 1,981
| 32
|
["Conjugate duality", "Constrained optimization", "Convergence", "Convex analysis", "Dual operations", "Infimal convolution", "Separable functions", "Subdifferentials", "Successive approximation"]
|
10.1090/S0002-9947-1981-0628449-5
|
Article
|
English
|
[{"id": "60000745", "name": "Department of Mathematics, University of Illinois, Urbana, IL, 61801, United States", "fullName": "Department of Mathematics, University of Illinois", "reference": "a", "fullAddress": "Urbana, IL, 61801, United States", "departmentId": "105292056"}, {"id": "60013813", "name": "Department of Mathematics, University of the Pacific, Stockton, CA, 95211, United States", "fullName": "Department of Mathematics, University of the Pacific", "reference": "b", "fullAddress": "Stockton, CA, 95211, United States", "departmentId": "103716373"}]
|
521
| 29,225
|
Graph-theoretical approach to the calculation of physico-chemical properties of polymers
|
European Polymer Journal
|
A topological extrapolation method for the calculation of various properties (melting points, refractive indices, specific rotation, etc.) of infinite linear polymers is developed. The rapid convergence of the oligomer extrapolation series results in very good agreement between calculated and experimental values. Comparison between the proposed method and other empirical or semi-empirical methods (the group addition method and the Pade-approximation) is also presented. © 1983.
|
["Mekenyan Ov.", "Dimitrov S.", "Bonchev D."]
|
["7005084696", "7004771310", "7004739529"]
| 1,983
| 35
|
[]
|
10.1016/0014-3057(83)90017-4
|
Article
|
English
|
[{"id": "60002102", "name": "Department of Physical Chemistry, Higher School of Chemical Technology, Burgas, BU-8010, Bulgaria", "fullName": "Department of Physical Chemistry, Higher School of Chemical Technology", "reference": "a", "fullAddress": "Burgas, BU-8010, Bulgaria", "departmentId": "103157272"}]
|
522
| 29,275
|
The statistical mechanics of turbo codes
|
European Physical Journal B
|
The "turbo codes", recently proposed by Berrou et al. [1] are written as a disordered spin Hamiltonian. It is shown that there exists a threshold Θ such that for signal to noise ratios 1/w<sup>2</sup> > Θ the error probability per bit vanishes in the thermodynamic limit, i.e. the limit of infinitely long sequences. The value of the threshold has been computed for two particular turbo codes. It is found that it depends on the code. These results are compared with numerical simulations.
|
["Montanari A.", "Sourlas N."]
|
["6504355675", "6603006160"]
| 2,000
| 51
|
["75.10.Hk Classical spin models", "75.10.Nr Spin-glass and other random models", "89.70.+c Information science"]
|
10.1007/PL00011086
|
Article
|
English
|
[{"id": "60030674", "name": "Scuola Normale Superiore, INFN, Sezione di Pisa, 56100 Pisa, Italy", "fullName": "Scuola Normale Superiore, INFN, Sezione di Pisa", "reference": "a", "fullAddress": "56100 Pisa, Italy", "departmentId": "121699269"}, {"id": "60210266", "name": "Lab. Phys. Theor. l'Ecl. Normale S., 75231 Paris Cedex 05, 24 rue Lhomond, France", "fullName": "Lab. Phys. Theor. l'Ecl. Normale S.", "reference": "b", "fullAddress": "75231 Paris Cedex 05, 24 rue Lhomond, France", "departmentId": null}]
|
523
| 29,278
|
Power corrections to the process γγ* → ππ in the light-cone sum rules approach
|
European Physical Journal C
|
We applied QCD light-cone sum rules to estimate power corrections to the helicity-conserving amplitude in the process γ*γ → ππ. We found that above Q<sup>2</sup> ∼ 4GeV<sup>2</sup> power corrections are numerically small and the twist-2 part dominates.The amplitude can be reliably calculated in this region using models of 2π distribution amplitudes as input. We found that the magnitude of the NLO corrections depends rather strongly on the normalization of the gluonic distribution amplitude.
|
["Kivel N.", "Mankiewicz L."]
|
["6701622953", "7003884282"]
| 2,000
| 6
|
[]
|
10.1007/s100520000524
|
Article
|
English
|
[{"id": "60030807", "name": "Inst. für Theoretische Physik, Universität Regensburg, 93040 Regensburg, Germany", "fullName": "Inst. für Theoretische Physik, Universität Regensburg", "reference": "a", "fullAddress": "93040 Regensburg, Germany", "departmentId": null}, {"id": "60014977", "name": "Petersburg Nuclear Physics Institute, 188350, Gatchina, Russian Federation", "fullName": "Petersburg Nuclear Physics Institute", "reference": "b", "fullAddress": "188350, Gatchina, Russian Federation", "departmentId": null}, {"id": "60027686", "name": "N. Copernicus Astronomical Center, 00-716 Warsaw, ul. Bartycka 18, Poland", "fullName": "N. Copernicus Astronomical Center", "reference": "c", "fullAddress": "00-716 Warsaw, ul. Bartycka 18, Poland", "departmentId": null}, {"id": "60073847", "name": "Andrzej Soltan Inst. Nucl. Studs. H., 00-681 Warsaw, Poland", "fullName": "Andrzej Soltan Inst. Nucl. Studs. H.", "reference": "d", "fullAddress": "00-681 Warsaw, Poland", "departmentId": null}]
|
524
| 29,479
|
Designing 'smart' computer-assisted markets. An experimental auction for gas networks
|
European Journal of Political Economy
|
We study a sealed bid-offer auction market for simultaneously pricing natural gas at each delivery outlet, source, and on all pipelines that connect sources with delivery points. Wholesale buyers submit location-specific bid schedules for amounts of delivered gas at corresponding prices. Wellhead owners submit location-specific offer schedules for amounts of produced gas they are willing to sell at corresponding offer prices. Pipeline owners submit leg-specific schedules of transportation capacity they are willing to commit at corresponding prices. A computer algorithm maximizes total gains from exchange based on the submitted bids and offers and determines allocations and non-discriminatory prices at all nodes. © 1989.
|
["McCabe K.A.", "Rassenti S.J.", "Smith V.L."]
|
["7005089137", "6602154384", "7401798683"]
| 1,989
| 38
|
[]
|
10.1016/0176-2680(89)90049-9
|
Article
|
English
|
[{"id": "60010065", "name": "Economic Science Laboratory, University of Arizona, Tucson, AZ 85721, United States", "fullName": "Economic Science Laboratory, University of Arizona", "reference": "a", "fullAddress": "Tucson, AZ 85721, United States", "departmentId": "103550754"}]
|
525
| 29,544
|
Scintillator light yield nonproportionality: Calculating photon response using measured electron response
|
IEEE Transactions on Nuclear Science
|
To study the effects of scintillator light yield nonproportionality, a technique has been developed to calculate photon response. A discrete convolution of measured electron response and the electron energy distribution for a particular scintillator yields the photon response. By establishing the ability to accurately calculate photon response, the experimental implications of scintillator light yield nonproportionality and geometry effects can be studied without the requirement for experimental measurements. This technique also provides a more detailed characterization of photon response than experimental techniques that rely on the use of multiple gamma-ray and X-ray sources. To demonstrate this technique, NaI(Tl), CaF <sub>2</sub>CEu), and LSO(Ce) photon responses have been calculated. By comparing calculated results to both measured photon responses and previously published photon responses for these scintillators, this technique has been validated. © 1997 IEEE.
|
["Rooney B.D.", "Valentine J.D."]
|
["7006491757", "7202985921"]
| 1,997
| 94
|
[]
|
10.1109/23.603702
|
Article
|
English
|
[{"id": "60025152", "name": "Department of Mechanical, Industrial, and Nuclear Engineering, University of Cincinnati, United States", "fullName": "Department of Mechanical, Industrial, and Nuclear Engineering, University of Cincinnati", "reference": "a", "fullAddress": "United States", "departmentId": "104272287"}]
|
526
| 29,611
|
Computationally difficult parsimony problems in phylogenetic systematics
|
Journal of Theoretical Biology
|
A basic problem in phylogenetic systematics is to construct an evolutionary hypothesis, or phylogenetic tree, from available data for a set of operational taxonomic units (OTUs). Associated with the edges of such trees are weights that usually are interpreted as lengths. Methods proposed for constructing phylogenetic trees attempt to select from among the myriad alternatives a tree that optimizes in some sense the fit of tree topology and edge lengths with the original data. One optimization criterion seeks a most parsimonious tree in which the sum of edge lengths is a minimum. Researchers have failed to develop efficient algorithms to compute optimal solutions for important variations of the parsimonious tree construction problem. Recently Graham & Foulds (1982) proved that a special case of the problem is NP-complete, thus making it unlikely that the computational problem for this case can be solved efficiently. I describe three other parsimonious tree construction problems and prove that they, too, are NP-complete. © 1983.
|
["Day W.H.E."]
|
["7102782334"]
| 1,983
| 58
|
[]
|
10.1016/0022-5193(83)90296-5
|
Article
|
English
|
[{"id": "60019000", "name": "Department of Computer Science, Memorial University of Newfoundland, St John's, Newfoundland, Canada A 1C 5S7", "fullName": null, "reference": "a", "fullAddress": null, "departmentId": "105412727"}]
|
527
| 29,632
|
Assignments and abstract moment maps
|
Journal of Differential Geometry
|
Abstract moment maps arise as a generalization of genuine moment maps on symplectic manifolds when the symplectic structure is discarded, but the relation between the mapping and the action is kept. Particular examples of abstract moment maps had been used in Hamiltonian mechanics for some time, but the abstract notion originated in the study of cobordisms of Hamiltonian group actions. In this paper we answer the question of existence of a (proper) abstract moment map for a torus action and give a necessary and sufficient condition for an abstract moment map to be associated with a pre-symplectic form. This is done by using the notion of an assignment, which is a combinatorial counterpart of an abstract moment map. Finally, we show that the space of assignments fits as the zeroth cohomology in a series of certain cohomology spaces associated with a torus action on a manifold. We study the resulting "assignment cohomology" theory.
|
["Ginzburg V.L.", "Guillemin V.", "Karshon Y."]
|
["57202114146", "57189923175", "6603650199"]
| 1,999
| 7
|
[]
|
10.4310/jdg/1214425278
|
Article
|
English
|
[]
|
528
| 29,675
|
Two algorithms for constructing a Delaunay triangulation
|
International Journal of Computer & Information Sciences
|
This paper provides a unified discussion of the Delaunay triangulation. Its geometric properties are reviewed and several applications are discussed. Two algorithms are presented for constructing the triangulation over a planar set of N points. The first algorithm uses a divide-and-conquer approach. It runs in O(N log N) time, which is asymptotically optimal. The second algorithm is iterative and requires O(N<sup>2</sup>) time in the worst case. However, its average case performance is comparable to that of the first algorithm. © 1980 Plenum Publishing Corporation.
|
["Lee D.T.", "Schachter B.J."]
|
["55909602800", "7003932896"]
| 1,980
| 1,017
|
["analysis of algorithms", "computational geometry", "Delaunay triangulation", "divide-and-conquer", "triangulation", "Voronoi tessellation"]
|
10.1007/BF00977785
|
Article
|
English
|
[{"id": "60007363", "name": "Northwestern University Dept. of Electrical Engineering and Computer Science, Evanston, 60201, Illinois, United States", "fullName": "Northwestern University Dept. of Electrical Engineering and Computer Science", "reference": "a", "fullAddress": "Evanston, 60201, Illinois, United States", "departmentId": null}, {"id": "60015623", "name": "General Electric Co., Daytona Beach, 32015, Florida, P.O. Box 2500, United States", "fullName": "General Electric Co.", "reference": "b", "fullAddress": "Daytona Beach, 32015, Florida, P.O. Box 2500, United States", "departmentId": null}]
|
529
| 29,683
|
Shrinkage, Porosity and Bulk Density of Foodstuffs at Changing Moisture Contents
|
Journal of Food Science
|
Dependable data on bulk density, volumetric shrinkage due to water loss and porosity are needed to model processes such as drying, packaging and storing. Experimental data are presented for all three properties. It is possible to model the water‐loss‐based bulk shrinkage coefficient to obtain a predictive equation based on composition of the foodstuff. From this, a generalized correlation is obtained which predicts bulk shrinkage coefficient knowing only the initial moisture content of the food. Porosities for the foodstuffs considered can be predicted through suitable correlations, but there is no generalized equation spanning all foods. Copyright © 1983, Wiley Blackwell. All rights reserved
|
["LOZANO J.E.", "ROTSTEIN E.", "URBICAIN M.J."]
|
["7103062599", "6701866164", "6603854024"]
| 1,983
| 265
|
[]
|
10.1111/j.1365-2621.1983.tb03524.x
|
Article
|
English
|
[{"id": "60013496", "name": "Planta Piloto de lngenieria Quinica, UNS—CONICETI, Bahia Blanca, 8000, Argentina", "fullName": "Planta Piloto de lngenieria Quinica, UNS—CONICETI", "reference": "a", "fullAddress": "Bahia Blanca, 8000, Argentina", "departmentId": null}]
|
530
| 29,777
|
Contact transition control of nonlinear mechanical systems subject to a unilateral constraint
|
Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME
|
In this paper, contact transition control of mechanical systems subject to a unilateral constraint is presented. A systematic way is proposed for designing control laws for unilaterally constrained mechanical systems. Three phases of motion (inactive, transition, active) are formulated depending on the activation/deactivation of the constraint. Our framework describes the complete behaviour of the mechaniccd system under the action of a unilatercd constraint. We propose stable control laws for all the phases of the system. Exponential stability in each phase is.shown. Of special interest is the contact transition problem. During this phase the dynamics is discontinuous. Nonsmooth Lyapunov techniques are used to show exponential stability in the transition phase. Composite Lyapunov functions are constructed for each phase and these are used to show asymptotic stability of the overall system taking into consideration switching from one phase to another. The proposed method is successfully implemented on robots interacting with an environment, and we present results of those experiments. Experimental results confirm the theoretically predicted behavior. © 1997 ASME.
|
["Pagilla P.R.", "Tomizuka M."]
|
["7003680435", "35567325500"]
| 1,997
| 22
|
[]
|
10.1115/1.2802387
|
Article
|
English
|
[{"id": "60006514", "name": "School of Mectianical and Aerospace Engineering, Oklatioma State University, Stiilwater, OK, 74078, United States", "fullName": "School of Mectianical and Aerospace Engineering, Oklatioma State University", "reference": "a", "fullAddress": "Stiilwater, OK, 74078, United States", "departmentId": "113848024"}, {"id": "60025038", "name": "Department of Meclianicai Engineering, University of Caiifornia, Berkeley, CA, 94720, United States", "fullName": "Department of Meclianicai Engineering, University of Caiifornia", "reference": "b", "fullAddress": "Berkeley, CA, 94720, United States", "departmentId": "123313108"}]
|
531
| 29,796
|
Jet calculus beyond leading logarithms
|
Nuclear Physics, Section B
|
It is shown that the evolution of hadronic jets produced in hard processes can be studied in terms of a simple parton branching picture, beyond the leading log approximation of QCD. The jet calculus is generalized to any given order of logs (but always to all orders of α<sub>s</sub>. We discuss the general structure of the formalism. Universality of jet evolution is discussed. We consider also jet calorimetry measure and the multiplicity distribution of final states in a form which allows a systematic improvement of approximation. To the next-to-leading order, we prove the finiteness and elucidate the scheme dependence of parton subprocess probabilities. The physical inclusive cross section is shown to be scheme independent: next-to-leading results for e<sup>+</sup>e<sup>-</sup> → q (non-singlet) + X agree with those of Curci and others. © 1981.
|
["Kalinowski J.", "Konishi K.", "Taylor T.R."]
|
["35314292400", "7202008597", "7402299511"]
| 1,981
| 48
|
[]
|
10.1016/0550-3213(81)90351-5
|
Article
|
English
|
[{"id": "60019778", "name": "CERN, Geneva, Switzerland", "fullName": "CERN", "reference": "a", "fullAddress": "Geneva, Switzerland", "departmentId": null}, {"id": "60013756", "name": "Institute of Theoretical Physics, Warsaw University, Poland", "fullName": "Institute of Theoretical Physics", "reference": "b", "fullAddress": "Warsaw University, Poland", "departmentId": "105184025"}]
|
532
| 29,841
|
Hadamard matrices from relative difference sets
|
Journal of Combinatorial Theory, Series A
| null |
["Spence E."]
|
["56243131700"]
| 1,975
| 14
|
[]
|
10.1016/0097-3165(75)90054-0
|
Article
|
English
|
[{"id": "60001490", "name": "Department of Mathematics, University of Glasgow, Glasgow, G12 8QW Scotland, United Kingdom", "fullName": "Department of Mathematics, University of Glasgow", "reference": "a", "fullAddress": "Glasgow, G12 8QW Scotland, United Kingdom", "departmentId": "103121150"}]
|
533
| 29,860
|
Nonlinear model predictive control of a laboratory gas turbine installation
|
Journal of Engineering for Gas Turbines and Power
|
The feasibility of model predictive control (MPC) applied to a laboratory gas turbine installation is investigated. MPC explicitly incorporates (input and output) constraints in its optimizations, which explains the choice for this computationally demanding control strategy. Strong nonlinearities, displayed by the gas turbine installation, cannot always be handled adequately by standard linear MPC. Therefore, we resort to nonlinear methods, based on successive linearization and nonlinear prediction as wellas the combination of these. We implement these methods, using a nonlinear model of the installation, and compare them to linear MPC. It is shown that controller performance can be improved, without increasing controller execution-time excessively.© 1999 by ASME.
|
["Vroemen B.G.", "Essen H.A.", "Steenhoven A.A.", "Kok J.J."]
|
["6505850486", "57195075770", "36741257600", "7103190282"]
| 1,999
| 30
|
[]
|
10.1115/1.2818518
|
Article
|
English
|
[{"id": "60032882", "name": "Eindhoven University of Tehnology, Department of Mechanical Engineering, MB Eindhoven, 5600, P. O. Box 513, Netherlands", "fullName": "Eindhoven University of Tehnology, Department of Mechanical Engineering", "reference": "a", "fullAddress": "MB Eindhoven, 5600, P. O. Box 513, Netherlands", "departmentId": "113579367"}]
|
534
| 29,887
|
Bound states in the hot electroweak phase
|
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
|
The high temperature phase of the electroweak standard theory is described by a strongly coupled SU(2)-Higgs-model in three dimensions. As in the Abbott-Farhi-model Higgs and W-boson are low lying bound states. Using a method by Simonov based on the Feynman-Schwinger representation of correlators we calculate the masses of these states. Our results are compared with lattice masses.
|
["Dosch H.G.", "Kripfganz J.", "Laser A.", "Schmidt M.G."]
|
["56195807200", "6603630112", "6602112104", "35592002400"]
| 1,996
| 0
|
[]
|
10.1016/0370-2693(95)01269-9
|
Article
|
English
|
[{"id": "60016908", "name": "Inst. für Theoretische Physik, Universtät Heidelberg, D-69120 Heidelberg, Philosophenweg 16, Germany", "fullName": "Inst. für Theoretische Physik, Universtät Heidelberg", "reference": "a", "fullAddress": "D-69120 Heidelberg, Philosophenweg 16, Germany", "departmentId": null}]
|
535
| 30,112
|
Some test statistics for use in multistate survival analysis
|
Biometrika
|
Some current nonparametric methods related to the log rank test are extended to cover ordered categories of response, e.g. response, no change, progression, and to incorporate information on duration of response. As an example, data from a protocol for the treatment of advanced breast cancer are analysed. The powers of several tests for this special case of multistate survival data are compared by Monte Carlo simulation for both small and moderate samples from exponential and Weibull distributions. © 1983 Biometrika Trust.
|
["Hsieh F.Y.", "Crowley J.", "Tormey D.C."]
|
["57206395316", "26643502200", "7005442838"]
| 1,983
| 25
|
["Monte Carlo study", "Multistate Cox regression model", "Multistate log rank test", "Ordinal data", "Semi-Markov model", "Summary Kruskal-Wallis statistic", "Survival data"]
|
10.1093/biomet/70.1.111
|
Article
|
English
|
[{"id": "60105084", "name": "Boehringer Ingelheim Ltd, Ridgefield, Connecticut, United States", "fullName": "Boehringer Ingelheim Ltd", "reference": "a", "fullAddress": "Ridgefield, Connecticut, United States", "departmentId": null}, {"id": "60003625", "name": "Fred Hutchinson Cancer Research Center, Seattle, Washington, United States", "fullName": "Fred Hutchinson Cancer Research Center", "reference": "b", "fullAddress": "Seattle, Washington, United States", "departmentId": null}, {"id": "60032179", "name": "Department of Human Oncology, University of Wisconsin, Madison, Wisconsin, United States", "fullName": "Department of Human Oncology, University of Wisconsin", "reference": "c", "fullAddress": "Madison, Wisconsin, United States", "departmentId": "108058578"}]
|
536
| 30,143
|
Numerical Study of the Current Distribution on a Post in a Rectangular Waveguide
|
IEEE Transactions on Microwave Theory and Techniques
|
A recently developed, rapidly converging moment solution for electromagnetic scattering by a single inductive post in a rectangular waveguide is extended to include the current induced on the post surface. The results are represented by a Fourier series and the first few terms are compared with available data. The excellent agreement demonstrates that this approach can yield an accurate solution. This rather simple procedure is even more attractive when other waveguide obstacles such as thick irises and posts of arbitrary shape, which require, in general, more than just a few Fourier terms for their current representation, are encountered. © 1984 IEEE
|
["Adams A.T.", "Shau D.-H.", "Leviatan Y."]
|
["7401909668", "6506054085", "7005691179"]
| 1,984
| 26
|
[]
|
10.1109/TMTT.1984.1132863
|
Article
|
English
|
[{"id": "60030551", "name": "Department of Electrical and Computer Engineering, Syracuse University, Syracuse, NY, 13210, United States", "fullName": "Department of Electrical and Computer Engineering, Syracuse University", "reference": "a", "fullAddress": "Syracuse, NY, 13210, United States", "departmentId": "100306911"}, {"id": "60022403", "name": "Department of Electrical Engineering Institute of Technology, Haifa, Israel", "fullName": "Department of Electrical Engineering Institute of Technology", "reference": "b", "fullAddress": "Haifa, Israel", "departmentId": null}]
|
537
| 30,159
|
Pulse radiolysis equipment: A setup for simultaneous multiwavelength kinetic spectroscopy
|
Review of Scientific Instruments
|
A setup for pulse radiolysis experiments is described consisting of the following main components: an array of 15 photomultipliers attached to a spectrograph (allowing 4032 spectra to be recorded with a time resolution of 500 ns per spectrum), self-regulating high-voltage supply for the photomultipliers, computer-controlled solution mixing and dispensing system, and provisions for continuous dose variation of the FEBETRON-accelerator electron beam. The general performance of the system is discussed and construction or electronic details are given for special components.
|
["Saran M.", "Vetter G.", "Erben-Russ M.", "Winter R.", "Kruse A.", "Michel C.", "Bors W."]
|
["7006139943", "23023461100", "6508258294", "7402499810", "23022052700", "7402119691", "7005930906"]
| 1,987
| 24
|
[]
|
10.1063/1.1139289
|
Article
|
English
|
[{"id": "60024007", "name": "GSF Research Center (Gesellschaft für Strahlen- und Umweltforschung München), Institut für Strahlenbiologie, 8042 Neuherberg, Germany", "fullName": "GSF Research Center (Gesellschaft für Strahlen- und Umweltforschung München), Institut für Strahlenbiologie", "reference": "a", "fullAddress": "8042 Neuherberg, Germany", "departmentId": "104211533"}]
|
538
| 30,196
|
An a priori nonminimal state-space realization of n-D systems
|
Linear Algebra and Its Applications
|
In investigations on n-D systems it is very important to know how to realize any multivariable rational transfer function. A minimal realization is most useful, but in general we do not know existence conditions for such a realization or methods for obtaining it. Therefore, we construct an a priori nonminimal realization which always exists for any causal transfer function, independently of the number of variables and their degrees. To simplify the notation, a description in terms of multiway matrices is used. © 1991.
|
["Gałkowski K."]
|
["7003620439"]
| 1,991
| 4
|
[]
|
10.1016/0024-3795(91)90363-2
|
Article
|
English
|
[{"id": "60019987", "name": "Wroław Technical University Institute of Telecommunication and Acoustics, 50-370 Wrocław, ul. Wybrzeze Wyspiańskiego 27, Poland", "fullName": "Wroław Technical University Institute of Telecommunication and Acoustics", "reference": "a", "fullAddress": "50-370 Wrocław, ul. Wybrzeze Wyspiańskiego 27, Poland", "departmentId": null}]
|
539
| 30,237
|
Representations of parafermi rings
|
Nuclear Physics
|
We consider the operator algebra corresponding to a system consisting of an arbitrary finite number v of parafermi oscillators with a view to obtaining all irrepresentations of the operator algebra defining it. It is shown that this algebra is isomorphic to the Lie algebra of the orthogonal group B<sub>v</sub> in 2v + 1 dimensions. The known results of the representation theory of the orthogonal group are then used to find the representations of the ring of parafermi operators. In particular it is seen that the so-called Green ansatz for a parafermi ring arises in a natural way and that, in a certain sense, it furnishes the most general "solution" of the parafermi algebra. The case of a parafermi ring of order 2, which is the simplest non-trivial case, is considered in some detail. © 1963.
|
["Ryan C.", "Sudarshan E.C.G."]
|
["22989800600", "7004170642"]
| 1,963
| 94
|
[]
|
10.1016/0029-5582(63)90865-4
|
Article
|
English
|
[{"id": "60027165", "name": "Department of Physics and Astronomy, University of Rochester, United States", "fullName": "Department of Physics and Astronomy, University of Rochester", "reference": "a", "fullAddress": "United States", "departmentId": "113005737"}]
|
540
| 30,254
|
The OPCL control method for entrainment, model-resonance, and migration actions on multiple-attractor systems
|
Chaos
|
A survey is given of three different control objectives that can be achieved with the use of the Open-Plus-Closed-Loop (OPCL) control method, developed by Jackson and Grosu. For a system that can be characterized by N first-order ordinary differential equations, these objectives are: (1) the asymptotic entrainment of the system's dynamics to a prescribed "goal" dynamics, g(t); (2) an experimental-search method to determine an approximate dynamic model; (3) the transferal of the system from one attractor to any "target" attractor. For one class of systems, this may be accomplished without a model, by using only a short-duration record of the natural dynamics in the target attractor, as demonstrated experimentally using the Chua system. © 1997 American Institute of Physics.
|
["Jackson E.A."]
|
["22967367400"]
| 1,997
| 29
|
[]
|
10.1063/1.166283
|
Article
|
English
|
[{"id": "60000745", "name": "Department of Physics, Beckman Institute, Univ. Illinois at Urbana-Champaign, Urbana, IL 61801-3080, 1110 W. Green Street, United States", "fullName": "Department of Physics, Beckman Institute, Univ. Illinois at Urbana-Champaign", "reference": "a", "fullAddress": "Urbana, IL 61801-3080, 1110 W. Green Street, United States", "departmentId": "112814510"}]
|
541
| 30,276
|
On determining the dimension of real-time stock-price data
|
Journal of Business and Economic Statistics
|
We estimate the dimension of high-frequency stock-price data using the correlation integral of Grassberger and Procaccia. The data, even after filtering, appear to be of low dimension. To control for dependence in higher moments, we use a new technique known as the method of delays in our reconstruction. Delaying the data leads dimension estimates similar to random processes. We conclude that the data are either of low dimension with high entropy or nonlinear but of high dimension. © 1992 American Statistical Association.
|
["Mayfield E.S.", "Mizrach B."]
|
["6604068426", "7801350064"]
| 1,992
| 38
|
["Correlation integral", "Entropy", "Method of time delays", "Nonlinear dynamics"]
|
10.1080/07350015.1992.10509911
|
Article
|
English
|
[{"id": "60031117", "name": "Department of Economics, Boston College, Chestnut Hill, MA, 02167, United States", "fullName": "Department of Economics, Boston College", "reference": "a", "fullAddress": "Chestnut Hill, MA, 02167, United States", "departmentId": "104581527"}, {"id": "60022452", "name": "Department of Finance, The Wharton School, Philadelphia, PA, 19104, United States", "fullName": "Department of Finance, The Wharton School", "reference": "b", "fullAddress": "Philadelphia, PA, 19104, United States", "departmentId": "107149626"}]
|
542
| 30,291
|
Semiautomatic leakage analyzing system for time series fluorescein ocular fundus angiography
|
Pattern Recognition
|
An algorithm for measuring an index of leakage in fluorescein fundus angiography is presented. The number of pixels whose gray level exceeds an automatically determined slice level is calculated. An automatic blood vessel elimination technique is introduced. Further, a method of measuring the short term change of leakage from a time series of the fluorescein fundus angiographs is described. Our system can also deal with the time series images obtained on different occasions (long term change). The features of this paper are: (1) this paper deals with double time sequence images (short and long term); (2) an automatic blood vessel recognition algorithm is employed. © 1983.
|
["Tamura S.", "Tanaka K.", "Ohmori S.", "Okazaki K.", "Okada A.", "Hoshi M."]
|
["54780895300", "24515826700", "7103200407", "55119156200", "7402333247", "7202982841"]
| 1,983
| 20
|
["Blood vessel elimination", "Diabetic retinopathy", "Fluorescein fundus angiography", "Image processing", "Ocular fundus photograph", "Pattern recognition", "Time series images"]
|
10.1016/0031-3203(83)90018-3
|
Article
|
English
|
[{"id": "60024322", "name": "Department of Information and Computer Sciences, Faculty of Engineering Science, Osaka University, Toyonaka, Osaka, 560, Japan", "fullName": "Department of Information and Computer Sciences, Faculty of Engineering Science, Osaka University", "reference": "a", "fullAddress": "Toyonaka, Osaka, 560, Japan", "departmentId": "104225428"}, {"id": "60005887", "name": "Department of Internal Medicine, Osaka Police Hospital, Tennoji-ku, Osaka, 543, Japan", "fullName": "Department of Internal Medicine, Osaka Police Hospital", "reference": "b", "fullAddress": "Tennoji-ku, Osaka, 543, Japan", "departmentId": "100298778"}, {"id": "60010414", "name": "Department of Electrical Engineering, Faculty of Engineering, Tottori University, Tottori, Tottori, 680, Japan", "fullName": "Department of Electrical Engineering, Faculty of Engineering, Tottori University", "reference": "c", "fullAddress": "Tottori, Tottori, 680, Japan", "departmentId": "103570124"}, {"id": "60013829", "name": "The First Department of Medicine, Osaka University Medical School, Fukushima-ku, Osaka, 553, Japan", "fullName": "The First Department of Medicine, Osaka University Medical School", "reference": "d", "fullAddress": "Fukushima-ku, Osaka, 553, Japan", "departmentId": "100288035"}, {"id": "60019638", "name": "Department of Medicine, Osaka Kosei-Nenkin Hospital, Fukushima-ku, Osaka, 553, Japan", "fullName": "Department of Medicine, Osaka Kosei-Nenkin Hospital", "reference": "e", "fullAddress": "Fukushima-ku, Osaka, 553, Japan", "departmentId": "100280098"}]
|
543
| 30,416
|
Global optimization of atomic and molecular clusters using the space-fixed modified genetic algorithm method
|
Journal of Computational Chemistry
|
A modified genetic algorithm approach has been applied to atomic Ar clusters and molecular water clusters up to (H<sub>2</sub>O)<sub>13</sub>. Several genetic operators are discussed which are suitable for real-valued space-fixed atomic coordinates and Euler angles. The performance of these operators has been systematically investigated. For atomic systems, it is found that a mix of operators containing a coordinate-averaging operator is optimal. For angular coordinates, the situation is less clear. It appears that inversion and two-point crossover operators are the best choice. © 1997 by John Wiley & Sons, Inc.
|
["Niesse J.A.", "Mayne H.R."]
|
["6602370657", "6602581381"]
| 1,997
| 96
|
["Cluster geometry", "Clusters", "Genetic algorithm", "Global minimization techniques", "Search techniques"]
|
10.1002/(SICI)1096-987X(19970715)18:9<1233::AID-JCC11>3.0.CO;2-6
|
Article
|
English
|
[{"id": "60027576", "name": "Department of Chemistry, University of New Hampshire, Durham, NH 03824, United States", "fullName": "Department of Chemistry, University of New Hampshire", "reference": "a", "fullAddress": "Durham, NH 03824, United States", "departmentId": "104401408"}]
|
544
| 30,492
|
Matching: Invariant to translations, rotations and scale changes
|
Pattern Recognition
|
An optimization approach to invariant matching is proposed. In this approach, an object or a pattern is invariantly represented by an object-centred description called an attributed relational structure (ARS) embedding invariant properties and relations between the primitives of the pattern such as line segments and points. Noise effect is taken into account such that a scene can consist of noisy sub-parts of a model. The matching is then to find the optimal mapping between the ARSs of the scene and the model. A gain functional is formulated to measure the goodness of fit and is to be maximized by using the relaxation labelling method. Experiments are shown to illustrate the matching algorithm and to demonstrate that the approach is truly invariant to arbitrary translations, rotations, and scale changes under noise. © 1992.
|
["Li S.Z."]
|
["34870116100"]
| 1,992
| 96
|
["Attributed relational structures", "Invariance", "Pattern recognition", "Relaxation labelling", "Sub-graph matching"]
|
10.1016/0031-3203(92)90075-T
|
Article
|
English
|
[{"id": "60021097", "name": "Department of Electronic and Electrical Engineering, University of Surrey, Guildford, Surrey GU2 5XH, United Kingdom", "fullName": "Department of Electronic and Electrical Engineering, University of Surrey", "reference": "a", "fullAddress": "Guildford, Surrey GU2 5XH, United Kingdom", "departmentId": "105382343"}]
|
545
| 30,595
|
Stretching of fluid inclusions resulting from a low-temperature microthermometric technique
|
Economic Geology
| null |
["Lawler J.P.", "Crawford M.L."]
|
["55350769000", "7402706834"]
| 1,983
| 49
|
[]
|
10.2113/gsecongeo.78.3.527
|
Article
|
English
|
[{"id": "60021814", "name": "Exxon Minerals Company, Houston, TX 77001, P.O. Box 2189, United States", "fullName": "Exxon Minerals Company", "reference": "a", "fullAddress": "Houston, TX 77001, P.O. Box 2189, United States", "departmentId": null}, {"id": "60016747", "name": "Department of Geology, Bryn Mawr College, Bryn Mawr, PA 19010, United States", "fullName": "Department of Geology, Bryn Mawr College", "reference": "b", "fullAddress": "Bryn Mawr, PA 19010, United States", "departmentId": "112847332"}]
|
546
| 30,680
|
A classification of K-local spectra
|
Journal of Pure and Applied Algebra
|
When the stable homotopy category is localized with respect to ordinary topological K-theory, it becomes highly algebraic. In this paper, an algebraic classification of K<sub>*</sub>-local spectra is obtained using a 'united K-homology theory' K<sup>CRT</sup><sub>*</sub> which combines the complex, real, and self- conjugate theories. It has much better homological algebraic properties than its constituent homology theories and leads to a K<sup>CRT</sup><sub>*</sub>-Adams spectral sequence for K<sub>*</sub>-local mapping class groups which always vanishes above homological degree 2. The main classification results of this paper hold without arithmetic localization and generalize results previously obtained at an odd prime. © 1990.
|
["Bousfield A.K."]
|
["6603468241"]
| 1,990
| 45
|
[]
|
10.1016/0022-4049(90)90082-S
|
Article
|
English
|
[{"id": "60027561", "name": "Department of Mathematics, University of Illinois at Chicago, Chicago, IL 60680, United States", "fullName": "Department of Mathematics, University of Illinois at Chicago", "reference": "a", "fullAddress": "Chicago, IL 60680, United States", "departmentId": "104399087"}]
|
547
| 30,744
|
Network model for a two-dimensional disordered electron system with spin-orbit scattering
|
Physical Review B - Condensed Matter and Materials Physics
|
We introduce a network model to describe two-dimensional disordered electron systems with spin-orbit scattering. The network model is defined by a discrete unitary time-evolution operator. We establish by numerical transfer matrix calculations that the model exhibits a localization-delocalization transition. We determine the corresponding phase diagram in the parameter space of disorder scattering strength and spin-orbit scattering strength. Near the critical point we determine by statistical analysis a one-parameter scaling function and the critical exponent of the localization length to be (Formula presented) Based on a conformal mapping we also calculate the scaling exponent of the typical local density of states (Formula presented). © 1998 The American Physical Society.
|
["Merkt R.", "Janssen M.", "Huckestein B."]
|
["6506981163", "7202771241", "7004366057"]
| 1,998
| 40
|
[]
|
10.1103/PhysRevB.58.4394
|
Article
|
English
|
[{"id": "60024025", "name": "Institut für Theoretische Physik, Universität zu Köln, 50937 Köln, Zülpicher Strasse 77, Germany", "fullName": "Institut für Theoretische Physik, Universität zu Köln", "reference": "a", "fullAddress": "50937 Köln, Zülpicher Strasse 77, Germany", "departmentId": null}]
|
548
| 31,001
|
Higher order momentum approximations in classical collision theory
|
Zeitschrift für Physik
| null |
["Lehmann C.", "Leibfried G."]
|
["7101690549", "16652025800"]
| 1,963
| 63
|
[]
|
10.1007/BF01378911
|
Article
|
English
|
[{"id": "60024266", "name": "Solid State Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, United States", "fullName": "Solid State Division, Oak Ridge National Laboratory", "reference": "a", "fullAddress": "Oak Ridge, Tennessee, United States", "departmentId": "104223962"}]
|
549
| 31,088
|
Globally optimal parameters for on-line learning in multilayer neural networks
|
Physical Review Letters
|
We present a framework for calculating globally optimal parameters, within a given time frame, for on-line learning in multilayer neural networks. We demonstrate the capability of this method by computing optimal learning rates in typical learning scenarios. A similar treatment allows one to determine the relevance of related training algorithms based on modifications to the basic gradient descent rule as well as to compare different training methods. © 1997 American Physical Society.
|
["Saad D.", "Rattray M."]
|
["7006268913", "7005357184"]
| 1,997
| 30
|
[]
|
10.1103/PhysRevLett.79.2578
|
Article
|
English
|
[{"id": "60014551", "name": "Department of Computer Science and Applied Mathematics, Aston University, Birmingham, B4 7ET, United Kingdom", "fullName": "Department of Computer Science and Applied Mathematics, Aston University", "reference": "a", "fullAddress": "Birmingham, B4 7ET, United Kingdom", "departmentId": "115939820"}]
|
550
| 31,179
|
Discrete dynamical systems in dimensions one and two
|
Bulletin of the London Mathematical Society
| null |
["Whitley D."]
|
["7006966414"]
| 1,983
| 62
|
[]
|
10.1112/blms/15.3.177
|
Article
|
English
|
[{"id": "60007776", "name": "Department of Theoretical and Applied Mechanics, Cornell University, Ithaca, NY, 14853, United States", "fullName": "Department of Theoretical and Applied Mechanics, Cornell University", "reference": "a", "fullAddress": "Ithaca, NY, 14853, United States", "departmentId": "103427369"}]
|
551
| 31,189
|
Nonstationary Learning Characteristics of the LMS Algorithm
|
IEEE Transactions on Circuits and Systems
|
Upper and lower bounding first-order linear recursions for the mean-squared error realized with the LMS algorithm subjected to a sequence of independent nonstationary training vectors are derived. These bounds coincide to give the exact evolution of mean-squared error for the problem of identification of a nonrecursive time-varying system with white-noise excitation. This leads to an exact formula for time-averaged mean-squared error that is used to study optimization of the step-size parameter for minimum time-average misadjustment. New results on dependence of the minimal step size and the minimum misadjustment on the degree of nonstationarity are obtained. © 1987 IEEE
|
["Gardner W.A."]
|
["7202841195"]
| 1,987
| 35
|
[]
|
10.1109/TCS.1987.1086054
|
Article
|
English
|
[{"id": "60014439", "name": "Signal and Image Processing Laboratory, Department of Electrical and Computer Engineering, University of California, Davis, United States", "fullName": "Signal and Image Processing Laboratory, Department of Electrical and Computer Engineering, University of California", "reference": "a", "fullAddress": "Davis, United States", "departmentId": "100259041"}]
|
552
| 31,199
|
Target patterns in reaction-diffusion systems
|
Advances in Applied Mathematics
|
We consider the general reaction-diffusion system At = F(A) + ε{lunate} D<sub>M</sub> ▽<sup>2</sup>A + ε{lunate}g(→x, A), 0 < ε{lunate} ≪ 1, where the small term ε{lunate}g(→x, A) represents the effects of localized impurities. We assume that the system A<sub>t</sub> = F(A) has a stable time-periodic solution. Then we construct stable target pattern solutions of the full system. For typical initial conditions we find that these target patterns will arise only if g(→x, A) {not asymptotically equivalent}0. Finally, we determine how target patterns interact and show that higher frequency target patterns eventually engulf neighboring lower frequency target patterns. © 1981.
|
["Hagan P.S."]
|
["7006106329"]
| 1,981
| 45
|
[]
|
10.1016/0196-8858(81)90042-7
|
Article
|
English
|
[{"id": "60012708", "name": "Department of Mathematics, Stanford University, Stanford, CA 94305, United States", "fullName": "Department of Mathematics, Stanford University", "reference": "a", "fullAddress": "Stanford, CA 94305, United States", "departmentId": "103672847"}]
|
553
| 31,225
|
A green’s function convergence principle, with applications to computation and norm estimates
|
Rocky Mountain Journal of Mathematics
|
A new tool is developed for the study of Green’s functions of multipoint boundary value problems for kth order linear ordinary scalar equations. The tool takes the form of a convergence principle for Green’s functions, and is the proper version of a continuity theorem for boundary value problems. Two types of applications are considered: (1) practical computation of Green’s functions and (2) norm estimates for Green’s functions in the spaces C<sup>n</sup>[a,b] and L<sup>1</sup>[a,b]. Special attention is given to frequently used equations and boundary conditions, in particular, die equation y<sup>(k)</sup> = 0 is studied in detail for 2- point and multipoint boundary conditions. © 1976, Rocky Mountain Mathematics Consortium. All Rights Reserved.
|
["Gustafson G.B."]
|
["7102315927"]
| 1,976
| 18
|
["Computation of green’s functions", "Convergence of green’s functions", "Convergence properties of solutions", "Green’s function", "Niccoletti problem", "Norm estimates"]
|
10.1216/RMJ-1976-6-3-457
|
Article
|
English
|
[{"id": "60025488", "name": "University of Utah, Salt Lake City, UT, 84112, United States", "fullName": "University of Utah", "reference": "a", "fullAddress": "Salt Lake City, UT, 84112, United States", "departmentId": null}]
|
554
| 31,228
|
Self-organizing maps for drawing large graphs
|
Information Processing Letters
|
Self-organizing maps (SOM) are unsupervised, competitive neural networks used to project high-dimensional data onto a low-dimensional space. In this article we show how SOM can be used to draw graphs in the plane. The SOM-based approach to graph drawing, which belongs to the general class of force-directed algorithms, allows the drawing of arbitrary weighted graphs. It is particularly efficient to draw large graphs and can be used as a preprocessing step before application of a more sophisticated method. © 1998 Published by Elsevier Science B.V. All rights reserved.
|
["Bonabeau E.", "Hénaux F."]
|
["7007183722", "6506816691"]
| 1,998
| 21
|
["Algorithms", "Force-directed algorithm", "Graph drawing", "Neural networks", "Self-organizing maps"]
|
10.1016/s0020-0190(98)00108-2
|
Article
|
English
|
[{"id": "60030961", "name": "Santa Fe Institute, Santa Fe, NM 87501, 1399 Hyde Park Road, United States", "fullName": "Santa Fe Institute", "reference": "a", "fullAddress": "Santa Fe, NM 87501, 1399 Hyde Park Road, United States", "departmentId": null}, {"id": "60001271", "name": "ATR Adaptive Communications Research, Sorako-gun, Kyoto 619-02, Seika-cho, Japan", "fullName": "ATR Adaptive Communications Research", "reference": "b", "fullAddress": "Sorako-gun, Kyoto 619-02, Seika-cho, Japan", "departmentId": null}, {"id": "60029116", "name": "ENST, 75634 Paris Cédex 13, 46 rue Barrault, France", "fullName": "ENST", "reference": "c", "fullAddress": "75634 Paris Cédex 13, 46 rue Barrault, France", "departmentId": null}]
|
555
| 31,440
|
Nonconvexities in a stochastic control problem with learning
|
Journal of Economic Dynamics and Control
|
This paper examines the benefits from active learning in a stochastic control problem. In a linear model with parametric uncertainty, there are gains to probing, but the probing component of the loss function often has nonconvexities. I show that they can arise for two reasons: (1) failure of the precision matrix of the parameters to increase monotonically with the control variable (the covariances between a state variable and the random parameters can reduce the information gained from probing) and (2) changes in the path of future state variables induced by modifying the certainty-equivalent control. If the parameter on the control variable is large, a small change in the control can cause a much larger change in future state which, for a given level of uncertainty, makes probing more costly. © 1991.
|
["Mizrach B."]
|
["7801350064"]
| 1,991
| 12
|
[]
|
10.1016/0165-1889(91)90004-K
|
Article
|
English
|
[{"id": "60006297", "name": "Wharton School, University of Pennsylvania, Philadelphia, PA 19104, United States", "fullName": "Wharton School, University of Pennsylvania", "reference": "a", "fullAddress": "Philadelphia, PA 19104, United States", "departmentId": null}, {"id": "60031117", "name": "Department of Economics, Boston College, Chestnut Hill, MA 02167, United States", "fullName": "Department of Economics, Boston College", "reference": "b", "fullAddress": "Chestnut Hill, MA 02167, United States", "departmentId": "104581527"}]
|
556
| 31,463
|
Reduced dynamics in spin-boson models: A method for both slow and fast bath
|
Journal of Chemical Physics
|
We study a model for treating dissipative systems, a one dimensional quantum system coupled to a harmonic bath. The dynamics of such a system can be described by Feynman's path integral expression for the reduced density matrix. In this formulation the interaction of the system with the environment is stored in the influence functional. Recently we showed that fast environmental modes that give rise to correlations in the influence functional which are short range in time can be treated efficiently by a memory equation algorithm, which is a discretized version of a master equation. In this work we extend this approach to treat slow environmental modes as well, thereby efficiently linking adiabatic and nonadiabatic regimes. In this extended method the long range correlations in the influence functional arising from slow bath modes are taken into account through Stock's semiclassical self-consistent-field approach. © 2000 American Institute of Physics.
|
["Golosov A.A.", "Friesner R.A.", "Pechukas P."]
|
["6701525880", "7006839760", "6602516179"]
| 2,000
| 43
|
[]
|
10.1063/1.480888
|
Article
|
English
|
[{"id": "60030162", "name": "Department of Chemistry, Columbia University, New York, NY 10027, United States", "fullName": "Department of Chemistry, Columbia University", "reference": "a", "fullAddress": "New York, NY 10027, United States", "departmentId": "113511789"}]
|
557
| 31,507
|
Time-modulated oscillatory convection
|
Physical Review Letters
|
We investigate the effect of temporal modulation on the spatial patterns produced by a spatially extended system undergoing a Hopf bifurcation. It is shown that physically this modulation can stabilize standing waves, which would otherwise be stable to traveling waves. Mathematically a codimension-3 point is naturally introduced which encompasses a Takens-Bogdanov codimension-2 point with vanishing Hopf frequency. Experimentally this setup is attractive since the three relevant parameters are easily accessible and the steady bifurcation can be made forward as well as backward near a codimension-2 point. © 1988 The American Physical Society.
|
["Riecke H.", "Crawford J.D.", "Knobloch E."]
|
["6701774473", "55722747500", "57206230726"]
| 1,988
| 74
|
[]
|
10.1103/PhysRevLett.61.1942
|
Article
|
English
|
[{"id": "60030612", "name": "Institute for Nonlinear Science, University of California at San Diego, San Diego, CA 92093, United States", "fullName": "Institute for Nonlinear Science, University of California at San Diego", "reference": "a", "fullAddress": "San Diego, CA 92093, United States", "departmentId": "104548134"}, {"id": "60025038", "name": "Physics Department, University of California, Berkeley, CA 94720, United States", "fullName": "Physics Department, University of California", "reference": "b", "fullAddress": "Berkeley, CA 94720, United States", "departmentId": "100258028"}]
|
558
| 31,537
|
TIME SERIES ANALYSIS OF IMPULSE SEQUENCES OF THALAMIC SOMATIC SENSORY NEURONS
|
Journal of neurophysiology
| null |
["POGGIO G.F.", "VIERNSTEIN L.J."]
|
["7004245361", "6602608866"]
| 1,964
| 97
|
["BRAIN ELECTROPHYSIOLOGY", "ELECTRIC STIMULATION", "EXPERIMENTAL LAB STUDY", "MONKEYS", "NEURAL CONDUCTION", "NEUROPHYSIOLOGY", "PERIODICITY", "PERIPHERAL NERVES", "RECEPTORS, NEURAL", "SENSATION", "THALAMUS"]
|
10.1152/jn.1964.27.4.517
|
Article
|
English
|
[]
|
559
| 31,561
|
Distortionless Data Transmission with Minimum Peak Voltage
|
IEEE Transactions on Information Theory
|
Knowing that the tails of the ideal sin πt/πt pulse represent a divergent series, the problem is stated of finding distortionless bandlimited waves which give rise to a minimum of the worst peaks of voltage that can appear on the channel in unit-height binary transmission. The optimization problem is then solved for all sampling rates up to 1/2 the Nyquist rate by the unique wave which never gives rise to more than one volt on the channel, just the magnitude of the data bits themselves. An upper bound is established on the worst channel voltage at higher rates by means of a class of pulses whose spectrum reduces to the optimum when the sampling rate parameter is chosen to be 1/2 the Nyquist rate. A time-domain optimization principle is stated which deals with zero manipulation, and the implications for the concept of dimensionality are discussed. The principal results of this paper are related to other system concepts, including timing-jitter immunity and duobinary transmission. © 1967, IEEE. All rights reserved.
|
["Moroso F.", "Montagnana M."]
|
["56733443900", "16537817300"]
| 1,967
| 0
|
[]
|
10.1109/TIT.1967.1054027
|
Article
|
English
|
[{"id": "60012259", "name": "Institute of Mathematical Analysis, University of Turin, Turin, Italy., Italy", "fullName": "Institute of Mathematical Analysis, University of Turin", "reference": "a", "fullAddress": "Turin, Italy., Italy", "departmentId": "103646321"}]
|
560
| 31,565
|
Field effect on thermal emission from the 0.40 eV electron level in InGaP
|
Journal of Applied Physics
|
Results are reported of electric-field dependence on thermal emission of electrons from the 0.40 eV level at various temperatures in InGaP by means of deep-level transient spectroscopy. The data are analyzed according to the Poole-Frankel emission from the potentials which are assumed to be Coulombic, square well, and Gaussian, respectively. The emission rate from this level is strongly field dependent. It is found that the Gaussian potential model is more reasonable to describe the phosphorus-vacancy-induced potential in InGaP than the Coulombic and square-well ones.
|
["Zhu Q.S.", "Hiramatsu K.", "Sawaki N.", "Akasaki I.", "Liu X.N."]
|
["7403313501", "7202186190", "56214481600", "55169779200", "57193244000"]
| 1,993
| 19
|
[]
|
10.1063/1.353336
|
Article
|
English
|
[{"id": "60019499", "name": "Institute of Semiconductors, Academia Sinica, Beijing 100083, China", "fullName": "Institute of Semiconductors, Academia Sinica", "reference": "a", "fullAddress": "Beijing 100083, China", "departmentId": null}, {"id": "60000264", "name": "Department of Electronics, School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464, Fro-cho, Japan", "fullName": "Department of Electronics, School of Engineering, Nagoya University", "reference": "b", "fullAddress": "Chikusa-ku, Nagoya 464, Fro-cho, Japan", "departmentId": "105334768"}, {"id": "60033100", "name": "Department of Physics, Nanjing University, Nanjing 210008, China", "fullName": "Department of Physics, Nanjing University", "reference": "c", "fullAddress": "Nanjing 210008, China", "departmentId": "109230269"}]
|
561
| 31,586
|
Rational R-matrices in irreducible representations
|
Journal of Physics A: Mathematical and General
|
Working directly from the Yang-Baxter equation, the author obtains the spectral decomposition of rational R-matrices in irreducible representations, together with a necessary condition for their existence. Examples are given, and connections with the Drinfeld Yangian construction are discussed.
|
["MacKay N.J."]
|
["56268221900"]
| 1,991
| 29
|
[]
|
10.1088/0305-4470/24/17/018
|
Article
|
English
|
[{"id": "60022175", "name": "Dept. of Math. Sci., Durham Univ., United Kingdom", "fullName": "Dept. of Math. Sci., Durham Univ.", "reference": "a", "fullAddress": "United Kingdom", "departmentId": "104135639"}]
|
562
| 31,803
|
Effects of enriched and restricted early environments on the learning ability of bright and dull rats.
|
Canadian journal of psychology
| null |
["COOPER R.M.", "ZUBEK J.P."]
|
["7404337853", "6701499454"]
| 1,958
| 124
|
[]
|
10.1037/h0083747
|
Article
|
English
|
[]
|
563
| 31,857
|
Stripping of trace organic substances from water. Equipment and procedure
|
Journal of Chromatography A
|
While our previous papers on the stripping method for the detection and determination of organic substances in water were primarily concerned with principles, comparisons and examples, and provided little information for laboratories wishing to introduce the method, in this paper is given a detailed description of the equipment and practical procedures for routine application. Several modifications and improvements resulting from experience gained in routine use are included. © 1976.
|
["Grob K.", "Zürcher F."]
|
["7006755723", "24390092300"]
| 1,976
| 0
|
[]
|
10.1016/0021-9673(76)80005-2
|
Article
|
English
|
[{"id": "60002612", "name": "Institute for Water Resources and Water Pollution Control, Swiss Federal Institute of Technology (EAWAG), CH-8600 Dübendorf, Switzerland", "fullName": "Institute for Water Resources and Water Pollution Control, Swiss Federal Institute of Technology (EAWAG)", "reference": "a", "fullAddress": "CH-8600 Dübendorf, Switzerland", "departmentId": "103183333"}]
|
564
| 31,859
|
Multiple sensor fusion under unknown distributions
|
Journal of the Franklin Institute
|
The sensor S<sub>i</sub>, i = 1,2,..., N, of a multiple sensor system outputs Y<sup>(i)</sup>∈ ℛ, according to an unknown probability distribution P<sub>Y</sub>(i)<sub>|x</sub>, in response to input X ∈ ℛ. The problem is to design a fusion rule f:ℛ<sup>N</sup> → ℛ, based on a training sample, such that the expected square error I(f) = E[(X-f(Y))<sup>2</sup>] is minimized over a family of functions ℱ. In general, f* ∈ ℱ that minimizes I(.) cannot be computed since the underlying distributions are unknown. We consider sufficient conditions and algorithms to compute an estimator f̂ such that I(f̂) - I(f*) < ε with probability 1 - δ, for any ε > 0 and 0 < δ < 1. We present a general method for obtaining f̂ based on the scale-sensitive dimension of ℱ. We then review three recent computational methods based on the feedforward sigmoidal networks, the Nadaraya-Watson estimator, and the finite-dimensional vector spaces. © 1998 The Franklin Institute. Published by Elsevier Science Ltd.
|
["Rao N.S.V."]
|
["7401629378"]
| 1,999
| 18
|
["Empirical estimation", "Feedforward networks", "Fusion rule estimation", "Nadaraya-Watson estimator", "Sensor fusion", "Vector space methods"]
|
10.1016/S0016-0032(98)00022-2
|
Article
|
English
|
[{"id": "60024266", "name": "Oak Ridge National Laboratory, Oak Ridge, TN 37831-6364, United States", "fullName": "Oak Ridge National Laboratory", "reference": "a", "fullAddress": "Oak Ridge, TN 37831-6364, United States", "departmentId": null}]
|
565
| 31,876
|
A continuous analogue and an extension of Radö's formuæ
|
Bulletin of the Australian Mathematical Society
|
A continuous analogue is derived for Radó's comparison formulæ. The analogue is then employed to provide a result which continues Radó's result and interpolates an inequality of Pittenger.
|
["Pearce C.E.M.", "Pečarić J."]
|
["7101785826", "36907568700"]
| 1,996
| 13
|
[]
|
10.1017/s0004972700016944
|
Article
|
English
|
[]
|
566
| 32,073
|
A mathematical model for the stacking patterns of planar copper(II) halide oligomers
|
Acta Crystallographica Section A
| null |
["Willett R.D."]
|
["7006423221"]
| 1,993
| 12
|
[]
|
10.1107/S0108767392012170
|
Article
|
English
|
[]
|
567
| 32,203
|
Eigenvalue density of the wishart matrix and large deviations
|
Infinite Dimensional Analysis, Quantum Probability and Related Topics
|
A large deviation theorem is obtained for a certain sequence of random measures which includes the empirical eigenvalue distribution of Wishart matrices, as the matrix size tends to infinity. The rate function is convex and one of its ingredients is the logarithmic energy. In the case of the singular Wishart matrix, the limit distribution has an atom.
|
["Hiai F.", "Petz D."]
|
["6701898796", "6603946164"]
| 1,998
| 21
|
[]
|
10.1142/S021902579800034X
|
Article
|
English
|
[{"id": "60000099", "name": "Department of Mathematical Sciences, Ibaraki University, Mito, Ibaraki 310, Japan", "fullName": "Department of Mathematical Sciences, Ibaraki University", "reference": "a", "fullAddress": "Mito, Ibaraki 310, Japan", "departmentId": "103039842"}, {"id": "60030035", "name": "Department for Mathematical Analysis, Technical University of Budapest, H-1521 Budapest XI, Sztoczek u. 2, Hungary", "fullName": "Department for Mathematical Analysis, Technical University of Budapest", "reference": "b", "fullAddress": "H-1521 Budapest XI, Sztoczek u. 2, Hungary", "departmentId": "104519075"}, {"id": "60008435", "name": "Grad. School of Information Sciences, Tohoku University, Aoba-ku, Sendai 980-8577, Japan", "fullName": "Grad. School of Information Sciences, Tohoku University", "reference": "c", "fullAddress": "Aoba-ku, Sendai 980-8577, Japan", "departmentId": null}]
|
568
| 32,263
|
Generalized-ensemble Monte Carlo method for systems with rough energy landscape
|
Physical Review E - Statistical Physics, Plasmas, Fluids, and Related Interdisciplinary Topics
|
We present a Monte Carlo algorithm which enhances equilibrization of low-temperature simulations and allows sampling of configurations over a large range of energies. The method is based on a non-Boltzmann probability weight factor and is another version of the so-called generalized-ensemble techniques. The effectiveness of the approach is demonstrated for the system of a small peptide, an example of the frustrated system with a rugged energy landscape. © 1997 The American Physical Society.
|
["Hansmann U.H.E.", "Okamoto Y."]
|
["7006674667", "7404537612"]
| 1,997
| 106
|
[]
|
10.1103/PhysRevE.56.2228
|
Article
|
English
|
[{"id": "60033235", "name": "Department of Theoretical Studies, Institute for Molecular Science, Okazaki, Aichi, 444, Japan", "fullName": "Department of Theoretical Studies, Institute for Molecular Science", "reference": "a", "fullAddress": "Okazaki, Aichi, 444, Japan", "departmentId": "104686903"}]
|
569
| 32,294
|
Fuzzy relation equations and causal reasoning
|
Fuzzy Sets and Systems
|
Fuzzy relation-based models for handling uncertainty (in a non-probabilistic way) in diagnosis problems have been introduced by Sanchez about 20 years ago, and since then applied and developed by several researchers. The paper first reviews the existing proposals, also including the association-based abductive model proposed by Reggia and his co-workers, which uses non-fuzzy relations. A new model is presented in order to have a more expensive representation capable of handling uncertainty, and also of distinguishing (i) between manifestations which are certainly absent from those which are not (yet) observed, and (ii) between manifestations which cannot be caused by a given disorder and manifestations for which we do not know if they can or cannot be caused by this disorder. This new model is based on possibility theory and the so-called twofold fuzzy sets, previously introduced by the authors. © 1995.
|
["Dubois D.", "Prade H."]
|
["55936783300", "7006433595"]
| 1,995
| 40
|
["Abduction", "Certainty", "Diagnosis", "Fuzzy relation equation", "Possibility"]
|
10.1016/0165-0114(95)00105-T
|
Article
|
English
|
[{"id": "60030491", "name": "Institut de Recherche en Informatique de Toulouse, CNRS, Université Paul Sabatier, 31062 Toulouse Cedex, 118, Route de Narbonne, France", "fullName": "Institut de Recherche en Informatique de Toulouse, CNRS, Université Paul Sabatier", "reference": "a", "fullAddress": "31062 Toulouse Cedex, 118, Route de Narbonne, France", "departmentId": "104380481"}]
|
570
| 32,341
|
Vertical and planar merged MOS transistors for low-voltage high-speed ULSI
|
Proceedings of the International Conference on Microelectronics, ICM
|
Novel vertical and planar merged MOS (VMMOS and PMMOS) structures which increase the packaging density for advanced high-speed low-voltage low-power ULSI are examined. The VMMOS and PMMOS, where electrons and holes move along common channels, are simulated using 2D-numerical device-circuit simulators (DCS). Various VMMOS and PMMOS-SOI constructions providing integration density of up to 10<sup>9</sup> elements/cm<sup>2</sup> (0.1 μm design rule) at supply voltages of 0.2-0.8 V have been simulated and optimized. © 1999 Kuwait University.
|
["Bubennikov A.N.", "Rakitin V.V.", "Zykov A.V."]
|
["7004852779", "7003977552", "7006841414"]
| 1,999
| 8
|
["Charge carrier processes", "Circuit simulation", "CMOS technology", "Design optimization", "Information systems", "Low voltage", "MOSFETs", "Numerical simulation", "Packaging", "Ultra large scale integration"]
|
10.1109/ICM.2000.884851
|
Conference Paper
|
English
|
[{"id": "60000308", "name": "Moscow Institute of Physics and Technology, Moscow, 141700, Russian Federation", "fullName": "Moscow Institute of Physics and Technology", "reference": "a", "fullAddress": "Moscow, 141700, Russian Federation", "departmentId": null}]
|
571
| 32,377
|
A Rejection Technique for Sampling from T-Concave Distributions
|
ACM Transactions on Mathematical Software (TOMS)
|
rejection algorithm that uses a new method for constructing simple hat functions for a unimodal, bounded density f is introduced called “transformed density rejection.” It is based on the idea of transforming f with a suitable transformation T such that T(f(x)) is concave. f is then called T-concave, and tangents of T(f(x)) m the mode and in a point on the left and right side are used to construct a hat function with a table-mountain shape. It is possible to give conditions for the optimal choice of these points of contact. With the method can be used to construct a universal algorithm that is applicable to a large class of unimodal distributions, including the normal, beta, gamma, and t-distribution. © 1995, ACM. All rights reserved.
|
["Hormann W."]
|
["6701311168"]
| 1,995
| 49
|
["Log-concave distributions", "rejection method", "universal method"]
|
10.1145/203082.203089
|
Article
|
English
|
[{"id": "116961530", "name": "Institut f. Statistik, Germany", "fullName": "Institut f. Statistik", "reference": "a", "fullAddress": "Germany", "departmentId": null}]
|
572
| 32,412
|
A simple method for determining approximate static and dynamic vibrational hyperpolarizabilities
|
The Journal of Chemical Physics
|
A simple method is presented for calculating approximate static and dynamic vibrational hyperpolarizabilities. It involves determining electrical properties in the presence of a static field with and without geometry optimization. This method is readily applicable to all tensor components of a general polyatomic molecule. © 1995 American Institute of Physics.
|
["Bishop D.M.", "Hasan M.", "Kirtman B."]
|
["7401913518", "57205122906", "26643303400"]
| 1,995
| 135
|
[]
|
10.1063/1.469600
|
Article
|
English
|
[{"id": "60028897", "name": "Department of Chemistry, University of Ottawa, Ottawa, Ont. K1N 6N5, Canada", "fullName": "Department of Chemistry, University of Ottawa", "reference": "a", "fullAddress": "Ottawa, Ont. K1N 6N5, Canada", "departmentId": "113370958"}, {"id": "60029241", "name": "Department of Chemistry, University of California, Santa Barbara, CA 93106, United States", "fullName": "Department of Chemistry, University of California", "reference": "b", "fullAddress": "Santa Barbara, CA 93106, United States", "departmentId": "109783100"}, {"id": "60038812", "name": "Department of Chemistry, University of Kuwait, Safat, 10360, P. O. Box 5969, Kuwait", "fullName": "Department of Chemistry, University of Kuwait", "reference": "c", "fullAddress": "Safat, 10360, P. O. Box 5969, Kuwait", "departmentId": "104706262"}]
|
573
| 32,467
|
Design of continuous surface-relief phase plates by surface-based simulated annealing to achieve control of focal-plane irradiance
|
Optics Letters
|
High-performance phase plates are of vital concern for controlling the far-field irradiance of laser-fusion systems. Several designs for solving this difficult problem have been reported in Optics Letters [e. g., S. N. Dixit et al., Opt. Lett. 19, 417 (1994)]. We report a surface-based form of simulated annealing that significantly improves the irradiance control while eliminating the high-scatter problems that have plagued other methods. © 1996 Optical Society of America.
|
["Lin Y.", "Kessler T.J.", "Lawrence G.N."]
|
["55714568400", "7006782105", "7202287840"]
| 1,996
| 113
|
[]
|
10.1364/OL.21.001703
|
Article
|
English
|
[{"id": "60027165", "name": "Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14623-1299, 250 East River Road, United States", "fullName": "Laboratory for Laser Energetics, University of Rochester", "reference": "a", "fullAddress": "Rochester, NY 14623-1299, 250 East River Road, United States", "departmentId": null}, {"id": "108359669", "name": "Applied Optics Research, Tucson, AZ 85719, United States", "fullName": "Applied Optics Research", "reference": "b", "fullAddress": "Tucson, AZ 85719, United States", "departmentId": null}]
|
574
| 32,591
|
Simulation of transmission line transients using vector fitting and modal decomposition
|
IEEE Transactions on Power Delivery
|
This paper introduces a fast and robust method for rational fitting of frequency domain responses, well suited for both scalar and vector transfer functions. Application of the new method results in increased computational efficiency for transmission line models using modal decomposition with frequency dependent transformation matrices. This is due to the fact that the method allows the fitted elements of each eigenvector to share the same set of poles, and that accurate fitting can be achieved with a relatively low number of poles. © 1997 IEEE.
|
["Gustavsen B.", "Semlyen A."]
|
["55670921600", "7005475098"]
| 1,998
| 157
|
[]
|
10.1109/61.660941
|
Article
|
English
|
[{"id": "60016849", "name": "Department of Electrical and Computer Engineering, University of Toronto, Toronto, Ont. M5S 3G4, Canada", "fullName": "Department of Electrical and Computer Engineering, University of Toronto", "reference": "a", "fullAddress": "Toronto, Ont. M5S 3G4, Canada", "departmentId": "112270526"}]
|
575
| 32,744
|
Transient-estimate Monte Carlo in the two-dimensional electron gas
|
Physical Review B - Condensed Matter and Materials Physics
|
Energies of the ground state and low-lying excited states of the two-dimensional electron gas have been calculated by a transient-estimate Monte Carlo method. This is an exact fermion quantum Monte Carlo method that systematically improves upon the results of a variational energy without imposing nodal constraints. We focus upon the density (Formula presented)=1, where our previous variational Monte Carlo calculation found qualitative differences in the effective mass from other theoretical approaches. Starting from a wave function with backflow and two-body correlations, the best trial function in our previous variational study, we find a ground-state energy only very slightly lower than the previously reported backflow fixed-node energy, reinforcing the conclusion that backflow wave functions are quite accurate. The effective mass derived from excitation energies does not differ significantly from the variational Monte Carlo results, giving a value of (Formula presented)/m=0.93±0.01, so we conclude that the effective mass is indeed less than bare electron mass for a range of densities around (Formula presented)=1. © 1996 The American Physical Society.
|
["Kwon Y.", "Ceperley D."]
|
["7403459322", "54790578400"]
| 1,996
| 31
|
[]
|
10.1103/PhysRevB.53.7376
|
Article
|
English
|
[{"id": "60000142", "name": "Department of Physics, Kon-Kuk University, Seoul 133-701, South Korea", "fullName": "Department of Physics, Kon-Kuk University", "reference": "a", "fullAddress": "Seoul 133-701, South Korea", "departmentId": "100272747"}, {"id": "60000745", "name": "Department of Physics and National Center for Supercomputing Applications, University of Illinois, Urbana, IL 61801, United States", "fullName": "Department of Physics and National Center for Supercomputing Applications, University of Illinois", "reference": "b", "fullAddress": "Urbana, IL 61801, United States", "departmentId": null}]
|
576
| 32,857
|
Uniformly exhaustive submeasures and nearly additive set functions
|
Transactions of the American Mathematical Society
|
Every uniformly exhaustive submeasure is equivalent to a measure. From this, we deduce that every vector measure with compact range in an F-space has a control measure. We also show that c<sub>0</sub> (or any L-space) is a K-space, i.e. cannot be realized as the quotient of a nonlocally convex F-space by a one-dimensional subspace. © 1983 American Mathematical Society.
|
["Kalton N.J.", "Roberts J.W."]
|
["7003537314", "55482977900"]
| 1,983
| 66
|
["Control measure", "Submeasures", "Twisted sum"]
|
10.1090/S0002-9947-1983-0701524-4
|
Article
|
English
|
[{"id": "60006173", "name": "Department of Mathematics, University of Missouri, Columbia, MO, 65211, United States", "fullName": "Department of Mathematics, University of Missouri", "reference": "a", "fullAddress": "Columbia, MO, 65211, United States", "departmentId": "109547715"}, {"id": "60018179", "name": "Department of Mathematics, University of South Carolina, Columbia, SC, 29208, United States", "fullName": "Department of Mathematics, University of South Carolina", "reference": "b", "fullAddress": "Columbia, SC, 29208, United States", "departmentId": "100296196"}]
|
577
| 32,895
|
An empirical inquiry into the nature of the forward exchange rate bias
|
Journal of International Economics
|
This paper tests whether anticipated real exchange rate movements fully account for the systematic, time-varying discrepancies between forward and future spot exchange rates. The data do not reject this hypothesis. The results demonstrate that (1) real exchange rate changes are predictable; (2) anticipated real exchange rate changes are reflected in the forward bias; and (3) information available at the signing of the forward contract is useless in forecasting differences between forward and future spot prices beyond the information's ability to predict real exchange rate changes. The results emphasize the importance of real exchange rates in international asset pricing. © 1991.
|
["Levine R."]
|
["23080621700"]
| 1,991
| 8
|
[]
|
10.1016/0022-1996(91)90028-5
|
Article
|
English
|
[{"id": "60023612", "name": "Division of International Finance, Board of Governors of the Federal Reserve System, Washington, DC 20551, United States", "fullName": "Division of International Finance, Board of Governors of the Federal Reserve System", "reference": "a", "fullAddress": "Washington, DC 20551, United States", "departmentId": null}]
|
578
| 32,911
|
Computing eigenvalues of very large symmetric matrices-An implementation of a Lanczos algorithm with no reorthogonalization
|
Journal of Computational Physics
|
Many engineering and scientific applications require the computation of eigenvalues (and eigenvectors) of very large symmetric or Hermitian matrices. We describe a Lanczos procedure which allows us to compute either few or many eigenvalues of such matrices in any intervals specified by the user. This procedure can even be used to compute all of the eigenvalues. The desired eigenvalues are computed as eigenvalues of an associated symmetric tridiagonal matrix T<sub>m</sub>. whose order depends upon the distribution of the eigenvalues in the given matrix A and upon which portions of the spectrum of A are desired. The storage requirements depend linearly upon the order of A, if the the storage required to generate the products A<sub>x</sub> is also linear in the order. The amount of computation required depends directly upon the distribution of the desired eigenvalues and upon the cost of computing A<sub>x</sub>. Numerical results for a very large matrix of order 4900 demonstrate that this procedure can be used on very large matrices. © 1981.
|
["Cullum J.", "Willoughby R.A."]
|
["56187817200", "7005306630"]
| 1,981
| 131
|
[]
|
10.1016/0021-9991(81)90056-5
|
Article
|
English
|
[{"id": "60017366", "name": "Department of Mathematical Sciences, IBM Thomas J. Watson Research Center, Yorktown Heights, NY 10598, United States", "fullName": "Department of Mathematical Sciences, IBM Thomas J. Watson Research Center", "reference": "a", "fullAddress": "Yorktown Heights, NY 10598, United States", "departmentId": "105470843"}]
|
579
| 32,934
|
On multivariate median regression
|
Bernoulli
|
An extension of the concept of least absolute deviation regression for problems with multivariate response is considered. The approach is based on a transformation and retransformation technique that chooses a data-driven coordinate system for transforming the response vectors and then retransforms the estimate of the matrix of regression parameters, which is obtained by performing coordinatewise least absolute deviations regression on the transformed response vectors. It is shown that the estimates are equivariant under non-singular linear transformations of the response vectors. An algorithm called TREMMER (Transformation Retransformation Estimates in Multivariate MEdian Regression) has been suggested, which adaptivcly chooses the optimal data-driven coordinate system and then computes the regression estimates. We have also indicated how resampling techniques like the bootstrap can be used to conveniently estimate the standard errors of TREMMER estimates. It is shown that the proposed estimate is more efficient than the non-equivariant coordinatewise least absolute deviations estimate, and it outperforms ordinary least-squares estimates in the case of heavy-tailed non-normal multivariate error distributions. Asymptotic normality and some other optimality properties of the estimate are also discussed. Some interesting examples are presented to motivate the need for affine equivariant estimation in multivariate. median regression and to demonstrate the performance of the proposed methodology. © 1999 ISI/BS .
|
["Chakraborty B."]
|
["7102275473"]
| 1,999
| 16
|
["Affine equivariance", "Bootstrap", "Efficiency", "Elliptically symmetric distributions", "Generalized variance", "Least absolute deviations", "Multiresponse linear model", "Standard error estimation", "Transformation-retransformation estimate"]
|
10.2307/3318697
|
Article
|
English
|
[{"id": "60017161", "name": "Dept. of Statistics and Appl. Prob, National University of Singapore, Singapore 119260, 10 Kent Ridge Crescent, Singapore", "fullName": "Dept. of Statistics and Appl. Prob, National University of Singapore", "reference": "a", "fullAddress": "Singapore 119260, 10 Kent Ridge Crescent, Singapore", "departmentId": "103887183"}]
|
580
| 32,948
|
Compactly Supported Wavelets and Representations of the Cuntz Relations
|
Applied and Computational Harmonic Analysis
|
We study the harmonic analysis of the quadrature mirror filters coming from multiresolution wavelet analysis of compactly supported wavelets. It is known that those of these wavelets that come from third order polynomials are parameterized by the circle, and we compute that the corresponding filters generate irreducible mutually disjoint representations of the Cuntz algebra O except at two points on the circle. One of the two exceptional points corresponds to the Haar wavelet and the other is the unique point on the circle where the father function defines a tight frame which is not an orthonormal basis. At these two points the representation decomposes into two and three mutually disjoint irreducible representations, respectively, and the two representations at the Haar point are each unitarily equivalent to one of the three representations at the other singular point. © 2000 Academic Press.
|
["Bratteli O.", "Evans D.E.", "Jorgensen P.E.T."]
|
["6603766302", "56984250400", "55580299600"]
| 2,000
| 21
|
["Wavelet; Cuntz algebra; representation; orthogonal expansion; quadrature mirror filter; isometry in Hilbert space"]
|
10.1006/acha.2000.0283
|
Article
|
English
|
[{"id": "60010348", "name": "Department of Mathematics, University of Oslo, N-0316 Oslo, PB 1053 Blindern, Norway", "fullName": "Department of Mathematics, University of Oslo", "reference": "a", "fullAddress": "N-0316 Oslo, PB 1053 Blindern, Norway", "departmentId": "103564941"}, {"id": "60023998", "name": "School of Mathematics, University of Wales, Cardiff, Cardiff, CF2 4YH, Senghenydd Road, United Kingdom", "fullName": "School of Mathematics, University of Wales, Cardiff", "reference": "b", "fullAddress": "Cardiff, CF2 4YH, Senghenydd Road, United Kingdom", "departmentId": "104210633"}, {"id": "60024324", "name": "Department of Mathematics, University of Iowa, 14 MacLean Hall, Iowa City, IO 52242-1419, United States", "fullName": "Department of Mathematics, University of Iowa, 14 MacLean Hall", "reference": "c", "fullAddress": "Iowa City, IO 52242-1419, United States", "departmentId": "105313224"}]
|
581
| 33,024
|
Extremes for the minimal spanning tree on normally distributed points
|
Advances in Applied Probability
|
Let n points be placed independently in v-dimensional space according to the standard v-dimensional normal distribution. Let M<sub>n</sub> be the longest edge-length of the minimal spanning tree on these points; equivalently let M<sub>n</sub> be the infimum of those r such that the union of balls of radius r/2 centred at the points is connected. We show that the distribution of (2 log n)<sup>1/2</sup>M<sub>n</sub> -b<sub>n</sub> converges weakly to the Gumbel (double exponential) distribution, where b<sub>n</sub> are explicit constants with b<sub>n</sub> ∼ (v - 1) log log n. We also show the same result holds if M<sub>n</sub> is the longest edge-length for the nearest neighbour graph on the points.
|
["Penrose M.D."]
|
["7003737344"]
| 1,998
| 31
|
["Chen-Stein method", "Extreme values", "Geometric probability", "Minimal spanning tree", "Nearest neighbour graph", "Poisson process"]
|
10.1017/S000186780000851X
|
Article
|
English
|
[{"id": "60022175", "name": "Department of Mathematical Sciences, University of Durham, Durham DH1 3LE, South Road, United Kingdom", "fullName": "Department of Mathematical Sciences, University of Durham", "reference": "a", "fullAddress": "Durham DH1 3LE, South Road, United Kingdom", "departmentId": "113154481"}]
|
582
| 33,310
|
Surface critical behavior near the Lifshitz point of a semi-infinite system
|
Physical Review B
|
The critical behavior of a semi-infinite system with a Lifshitz point is studied in the paramagnetic phase, in the Gaussian approximation. The phase transition is modelled by a Ginzburg-Landau-Wilson Hamiltonian used by Hornreich, Luban, and Shtrikman, containing an extra surface contribution that involves both a local (c0) and nonlocal (cn) term. Explicit analytic results are obtained for the spin-spin correlation function when the surface perturbations are infinitely strong and infinitely weak. The possibility that the surface layer orders before the bulk spins, at the Lifshitz point, is examined. © 1986 The American Physical Society.
|
["Gumbs G."]
|
["7005735990"]
| 1,986
| 11
|
[]
|
10.1103/PhysRevB.33.6500
|
Article
|
English
|
[{"id": "60015913", "name": "Department of Physics, Dalhousie University, Halifax, NS B3H 3J5, Canada", "fullName": "Department of Physics, Dalhousie University", "reference": "a", "fullAddress": "Halifax, NS B3H 3J5, Canada", "departmentId": "103824035"}]
|
583
| 33,324
|
Diffusion coefficients and the time auto-correlation function of density fluctuations
|
Surface Science
|
It is shown that the time autocorrelation function of density fluctuations of an adsorbate correctly yields the chemical diffusion coefficient, defined by Fick's law, over a wide variety of conditions. Relations between the chemical diffusion coefficient and the tracer or self diffusion coefficient are also given and discussed. © 1981.
|
["Mazenko G.", "Banavar J.R.", "Gomer R."]
|
["6603889770", "35550744500", "56223312900"]
| 1,981
| 102
|
[]
|
10.1016/0039-6028(81)90539-2
|
Article
|
English
|
[{"id": "60029278", "name": "The Departments of Physics and Chemistry, The James Franck Institute, The University of Chicago, Chicago, IL 60637, United States", "fullName": "The Departments of Physics and Chemistry, The James Franck Institute, The University of Chicago", "reference": "a", "fullAddress": "Chicago, IL 60637, United States", "departmentId": "122812569"}]
|
584
| 33,478
|
Isotropic majority-vote model on a square lattice
|
Journal of Statistical Physics
|
The stationary critical properties of the isotropic majority vote model on a square lattice are calculated by Monte Carlo simulations and finite size analysis. The critical exponents ν, γ, and β are found to be the same as those of the Ising model and the critical noise parameter is found to be q<sub>c</sub>=0.075±0.001. © 1992 Plenum Publishing Corporation.
|
["de Oliveira M.J."]
|
["57190897476"]
| 1,992
| 197
|
["Majority-vote models", "Monte Carlo simulation", "stochastic spin systems"]
|
10.1007/BF01060069
|
Article
|
English
|
[{"id": "60119141", "name": "Department of Mathematics, Rutgers University, New Brunswick, 08903, New Jersey, United States", "fullName": "Department of Mathematics, Rutgers University", "reference": "a", "fullAddress": "New Brunswick, 08903, New Jersey, United States", "departmentId": "123158424"}]
|
585
| 33,594
|
A New Driving Circuit for IGBT Devices
|
IEEE Transactions on Power Electronics
|
IGBT devices are increasingly used in power elec- tronic equipment due to their high power handling capability. This paper deals with the problems that concern the turn-on, turn-off, and short-circuit of these devices. An optimal new driving circuit is proposed which gives excellent device output performances. Experimental oscillogram traces of transient condition tests are given, which demonstrate the advantages of using the new driving circuit. The suitability of the driving circuit for integration is analyzed. © 1995 IEEE
|
["Licitra C.", "Musumeci S.", "Raciti A."]
|
["56940431700", "54679939000", "56024826600"]
| 1,995
| 56
|
[]
|
10.1109/63.388004
|
Article
|
English
|
[{"id": "60010146", "name": "Dipartimento Elettrico Elettronico Sistemistico, Universitá di Catania, Italy", "fullName": "Dipartimento Elettrico Elettronico Sistemistico, Universitá di Catania", "reference": "a", "fullAddress": "Italy", "departmentId": "103555215"}, {"id": "60023682", "name": "SGS-THOMSON Microelectronics, Catania, Italy", "fullName": "SGS-THOMSON Microelectronics", "reference": "b", "fullAddress": "Catania, Italy", "departmentId": "106859707"}]
|
586
| 33,597
|
Multiscript information processing on crossroads: Demands for shifting from diverse character code sets to the unicode™ standard in library aplications
|
IFLA Journal
| null |
["Zhang F.J.", "Zeng M.L."]
|
["55495433200", "7101778742"]
| 1,999
| 3
|
[]
|
10.1177/034003529902500307
|
Article
|
English
|
[{"id": "110625099", "name": "China Academic Library Systems (CALIS), Palo Alto, CA 94303, 88 Colorado Avenue, United States", "fullName": "China Academic Library Systems (CALIS)", "reference": "a", "fullAddress": "Palo Alto, CA 94303, 88 Colorado Avenue, United States", "departmentId": null}, {"id": "60029653", "name": "School of Library and Information Science, Kent State University, Kent, OH 44242-0001, United States", "fullName": "School of Library and Information Science, Kent State University", "reference": "b", "fullAddress": "Kent, OH 44242-0001, United States", "departmentId": "104502799"}]
|
587
| 33,609
|
On the equivalence between 2-D induced gravity and a WZNW system
|
Modern Physics Letters A
|
A general method of constructing canonical gauge-invariant actions is used to establish the equivalence between 2-D induced gravity and a WZNW system, defined by a difference of two simple WZNW actions for the SL(2, R) group. The diffeomorphism invariance of the induced gravity is generated by the SL(2, R) Kac-Moody structure of the WZNW system.
|
["Blagojević M.", "Popović D.S.", "Sazdović B."]
|
["7007007880", "35117999100", "9243028900"]
| 1,998
| 9
|
[]
|
10.1142/s0217732398000991
|
Article
|
English
|
[{"id": "60068815", "name": "Institute of Physics, 11001 Belgrade, P. O. Box 57, Yugoslavia", "fullName": "Institute of Physics", "reference": "a", "fullAddress": "11001 Belgrade, P. O. Box 57, Yugoslavia", "departmentId": null}]
|
588
| 33,632
|
Impetuous youngsters and jaded old-timers: Acquiring a reputation for learning
|
Journal of Political Economy
|
This paper examines individual decision making when decisions reflect on people's ability to learn. We address this problem in the context of a manager making investment decisions on a project over time. We show that in an effort to appear as a fast learner, the manager will exaggerate his own information; but ultimately, he becomes too conservative, being unwilling to change his investments on the basis of new information. Our results arise purely from learning about competence rather than concavity or convexity of the rewards functions. We relate our results to the existing psychology literature concerning cognitive dissonance reduction.
|
["Prendergast C.", "Stole L."]
|
["7003650420", "6602412362"]
| 1,996
| 256
|
[]
|
10.1086/262055
|
Article
|
English
|
[{"id": "60029278", "name": "University of Chicago", "fullName": "University of Chicago", "reference": "a", "fullAddress": null, "departmentId": null}, {"id": "60020337", "name": "National Bureau of Economic Research", "fullName": "National Bureau of Economic Research", "reference": "b", "fullAddress": null, "departmentId": null}]
|
589
| 33,657
|
The dynamics of spatial pollution: The case of phosphorus runoff from agricultural land
|
Journal of Economic Dynamics and Control
|
The paper analyzes, based on a land classification system, the optimal management of negative production externalities while taking into account the intertemporal and spatial aspects of the problem. To incorporate both aspects simultaneously, a two-stage modeling approach is proposed where the solution of the spatial problem (first stage) is optimized over time (second stage). As a result, it is possible to relate long-run and short-run supply and input demand functions. Attention is given to runoffs from agricultural land leading to the contamination of a water body, in particular, the one of phosphorus and the eutrophication of lakes. The employment of a land classification system supports a full-information approach and allows to address the optimal management of mineral fertilizer and manure based on zonal taxes, zonal permits, and zonal standards which all vary over time.
|
["Goetz R.U.", "Zilberman D."]
|
["7101958254", "35578894000"]
| 2,000
| 44
|
["C61", "H23", "Pollution tax", "Q24", "Q25", "Space time-dependent optimal control", "Tradable phosphorus permits", "Zoning"]
|
10.1016/s0165-1889(98)00067-0
|
Article
|
English
|
[{"id": "60009952", "name": "Department of Economics, University of Girona, Girona, Spain", "fullName": "Department of Economics, University of Girona", "reference": "a", "fullAddress": "Girona, Spain", "departmentId": "112756702"}, {"id": "60025038", "name": "Dept. of Agric. and Rsrc. Economics, University of California, Berkeley, CA, United States", "fullName": "Dept. of Agric. and Rsrc. Economics, University of California", "reference": "b", "fullAddress": "Berkeley, CA, United States", "departmentId": "104262555"}]
|
590
| 33,709
|
Real-space scaling methods applied to the one-dimensional extended Hubbard model. I. the real-space renormalization-group method
|
Physical Review B
|
The real-space renormalization-group method is applied to the one-dimensional extended Hubbard model. It is shown that in the half-filled-band case, the phase diagram consists of two phases and that the transition from the spin-ordered phase to the charge-ordered phase is continuous, a result which differs from that obtained previously from the broken-symmetry Hartree-Fock approximation. © 1984 The American Physical Society.
|
["Fourcade B.", "Spronken G."]
|
["56563839200", "22969196600"]
| 1,984
| 0
|
[]
|
10.1103/PhysRevB.29.5089
|
Article
|
English
|
[{"id": "60019141", "name": "Départment de Génie Physique, Ecole Polytechnique, Montréal, Que. H3C 3A7, Canada", "fullName": "Départment de Génie Physique, Ecole Polytechnique", "reference": "a", "fullAddress": "Montréal, Que. H3C 3A7, Canada", "departmentId": "103977179"}]
|
591
| 33,711
|
Comparative statics of the firm
|
Journal of Economic Theory
|
Complementarities arise naturally in diverse models of optimal decision-making in a firm. Theoretical properties of supermodular functions provide a powerful tool for analyzing qualitative properties in such circumstances. This paper considers a general model of the firm and gives sufficient conditions for complementarities to hold and for optimal decisions to be monotone with a parameter. A variety of specific models of the firm are shown to satisfy these conditions. Necessary conditions delimit those models of the firm that may exhibit monotone optimal decisions. Journal of Economic Literature Classification Numbers: B41, C61, D20, L00. © 1995 Academic Press. All rights reserved.
|
["Topkis D.M."]
|
["6701635783"]
| 1,995
| 38
|
[]
|
10.1006/jeth.1995.1078
|
Article
|
English
|
[{"id": "60014439", "name": "Graduate School of Management, University of California, Davis, CA 95616, United States", "fullName": "Graduate School of Management, University of California", "reference": "a", "fullAddress": "Davis, CA 95616, United States", "departmentId": null}]
|
592
| 33,742
|
An inexact Newton algorithm for solving the tokamak edge plasma fluid equations on a multiply-connected domain
|
Journal of Computational Physics
|
Newton’s method is combined with a preconditioned conjugate gradient-like algorithm and finite volume discretization to solve the steady-state two-dimensional tokamak edge plasma fluid equations. A numerical evaluation of the Jacobian is employed. Mesh sequencing, pseudo-transient continuation, and adaptive damping are used to increase the radius of convergence. The computations are performed on a multiply-connected curvilinear geometry in a fully coupled manner. The preconditioned conjugate gradient-like algorithm is shown to have a significant storage advantage over the previously used banded Gaussian elimination, while maintaining the excellent convergence characteristics of the overall algorithm. Simulations of a high recycling divertor and a gaseous divertor on the DIII-D tokamak geometry are used to demonstrate algorithm performance. © 1995 by Academic Press, Inc.
|
["Knoll D.A.", "McHugh P.R."]
|
["7004835515", "7102160306"]
| 1,995
| 16
|
[]
|
10.1006/jcph.1995.1027
|
Article
|
English
|
[{"id": "60005120", "name": "Computational Fluid Dynamics Unit, Idaho National Engineering Laboratory, Idaho Falls, ID 83415-3895, United States", "fullName": "Computational Fluid Dynamics Unit, Idaho National Engineering Laboratory", "reference": "a", "fullAddress": "Idaho Falls, ID 83415-3895, United States", "departmentId": "106818114"}]
|
593
| 33,743
|
An options view of investments in expansion-flexible manufacturing systems
|
International Journal of Production Economics
|
Traditional financial investment evaluation methods are often unsuitable for evaluating investments in flexible manufacturing systems. We present a novel method of valuing expansion flexibility, based on options theory, and illustrate its use through a detailed example. This method captures additional characteristics of the problem that are not addressed by traditional methods, and can be used for comparing investment alternatives as well as justifying them. The managerial implications of this method are analyzed. © 1995.
|
["Kumar R.L."]
|
["55492134100"]
| 1,995
| 22
|
[]
|
10.1016/0925-5273(95)00024-I
|
Article
|
English
|
[{"id": "60006951", "name": "Department of MIS and Operations Management, The Belk College of Business Administration, The University of North Carolina at Charlotte, Charlotte, NC 28223, United States", "fullName": "Department of MIS and Operations Management, The Belk College of Business Administration, The University of North Carolina at Charlotte", "reference": "a", "fullAddress": "Charlotte, NC 28223, United States", "departmentId": "103390554"}]
|
594
| 33,744
|
Top condensation from very massive strongly coupled gauge bosons
|
Nuclear Physics, Section B
|
The Standard Model is extended minimally by making the U(1)<sub>Y</sub> field the unbroken subgroup of a bigger U(1) × U(1) gauge structure while the Higgs sector is omitted. If one of the original U(1)'s is strongly coupled then the residual effects of the strongly coupled massive component can lead to dynamical electroweak symmetry breaking by top condensation. An explicit renormalizable model with a scale of new physics in the multi TeV range is constructed and the top mass predictions as well as the phenomenology is discussed. It turns out that the effective lagrangian contains more than the usual Higgs sector which makes the scenario clearly distinguishable; in particular it is shown that for the strong coupling not all of the effects decouple as the heavy mass goes to infinity and there can be negative contributions to the ρ{variant}-parameter, thereby somewhat relaxing the stringent experimental upper bounds on the top mass. © 1992.
|
["Lindner M.", "Ross D."]
|
["7102871121", "24442419300"]
| 1,992
| 69
|
[]
|
10.1016/0550-3213(92)90343-A
|
Article
|
English
|
[{"id": "60019778", "name": "CERN, CH-1211 Geneva 23, Switzerland", "fullName": "CERN", "reference": "a", "fullAddress": "CH-1211 Geneva 23, Switzerland", "departmentId": null}]
|
595
| 33,781
|
Analysis of π<sup>-</sup>p → π<sup>-</sup>π<sup>+</sup>n data at 17.2 GeV/c
|
Physics Letters B
|
We propose an amplitude analysis for π<sup>-</sup>p → π<sup>-</sup>π<sup>+</sup>n data which allows for the possibility of A<sub>2</sub> exchange as well as absorbed pion exchange in a model independent way. This leads to an improved extrapolation method for extracting ππ phase shifts. Using the recent CERN-Munich data at 17.2 GeV/c we isolate the π and A<sub>2</sub> exchange contributions and determine the form of the absorptive corrections. No evidence for an exchange contribution with the quantum numbers of the A<sub>1</sub> is found. © 1972.
|
["Estabrooks P.", "Martin A.D."]
|
["35353270500", "37048244500"]
| 1,972
| 0
|
[]
|
10.1016/0370-2693(72)90594-1
|
Article
|
English
|
[{"id": "60019778", "name": "CERN, Geneva, Switzerland", "fullName": "CERN", "reference": "a", "fullAddress": "Geneva, Switzerland", "departmentId": null}]
|
596
| 33,790
|
Number of spanning trees on a lattice
|
Journal of Physics A: General Physics
|
The number of spanning trees on a large lattice is evaluated exactly for the square, triangular and honeycomb lattices.
|
["Wu F.Y."]
|
["7403465656"]
| 1,977
| 97
|
[]
|
10.1088/0305-4470/10/6/004
|
Article
|
English
|
[{"id": "60028628", "name": "Department of Physics, Northeastern University, Boston, MA 021 15, United States", "fullName": "Department of Physics, Northeastern University", "reference": "a", "fullAddress": "Boston, MA 021 15, United States", "departmentId": "104448638"}]
|
597
| 33,844
|
Automatic control of coagulum cutting in cheese manufacturing
|
Applied Engineering in Agriculture
|
A fiber optic milk coagulation sensor was designed for the purpose of monitoring the enzymatic hydrolysis of milk and predicting curd cutting time in cheese processing. The sensor monitors the changes in diffuse reflectance during the coagulation process and predicts cutting time based on measurement of the time from enzyme addition to the inflection point on the reflectance profile, t<sub>max</sub>. A linear cutting time prediction equation, t<sub>c</sub> = Β t<sub>max</sub>, was used to predict cutting time. Beta was a constant determined by cheese plant operators. Consistency of operation was cited as the primary advantage offered by the milk coagulation sensor system. The process managers had an increased ability to diagnose processing problems or effects of processing changes. Other benefits may include reduced whey fat, decreased variations in cheese moisture, and reduced fines. The sensor has successfully operated in a commercial cheese manufacturing plant for over a year. The cutting time prediction technology has proven that it can consistently predict cutting time in a cheese manufacturing plant where protein concentration is relatively consistent.
|
["Payne F.A."]
|
["7103039972"]
| 1,995
| 21
|
["Coagulation", "Fiber optic", "Milk", "Sensor"]
| null |
Article
|
English
|
[{"id": "60015941", "name": "Dept. of Biosystems and Agricultural Engineering, University of Kentucky, Lexington, KY 40546-0276, 220 Agricultural Engineering Building, United States", "fullName": "Dept. of Biosystems and Agricultural Engineering, University of Kentucky", "reference": "a", "fullAddress": "Lexington, KY 40546-0276, 220 Agricultural Engineering Building, United States", "departmentId": "103825590"}]
|
598
| 33,858
|
Brownian motion and a generalised little picard’s theorem
|
Transactions of the American Mathematical Society
|
Goldberg, Ishihara, and Petridis have proved a generalised little Picard’s theorem for harmonic maps; if a harmonic map of bounded dilatation maps euchdean space, for example, into a space of negative sectional curvatures bounded away from zero then that map is constant. In this paper a probabihstic proof is given of a variation on this result, requiring in addition that the image space has curvatures bounded below. The method involves comparing asymptotic properties of Brownian motion with the asymptotic behaviour of its image under such a map. © 1983 American Mathematical Society.
|
["Kendall W.S."]
|
["7005144405"]
| 1,983
| 10
|
["Asymptotic behaviour of Brownian motion", "Bounded dilatation", "Brownian motion", "Harmonic maps", "Negative curvature", "Zero-one laws"]
|
10.1090/S0002-9947-1983-0682729-8
|
Article
|
English
|
[{"id": "60030469", "name": "Department of Mathematical Statistics, Hull University, Hull, HU6 7RX, United Kingdom", "fullName": "Department of Mathematical Statistics, Hull University", "reference": "a", "fullAddress": "Hull, HU6 7RX, United Kingdom", "departmentId": "104541836"}]
|
599
| 33,928
|
Uncertainty, Sensitivity, Convergence, and Rounding in Performing and Reporting Least-Squares Fits
|
Journal of Molecular Spectroscopy
|
This paper describes a procedure for optimal rounding of parameters determined from a linear or nonlinear least-squres fit in order to minimize the number of digits which must be quoted while ensuring that the resulting rounded constants can predict the input data with no significant loss of precision. Related problems concerning nonlinear least-squares convergence and taking account of model dependence of fitted or predicted parameters are also addressed. The recommended rounding procedure is illustrated by applications to electronic band data for the A-X system of I<sub>2</sub> and to infrared and microwave data for HF (yielding optimal new Dunham expansion coefficients for ground state HF). An automated version of this sequential rounding procedure has been incorporated in a general subroutine for performing linear or nonlinear least-squares fits. © 1998 Academic Press.
|
["Le Roy R.J."]
|
["7003743512"]
| 1,998
| 101
|
[]
|
10.1006/jmsp.1998.7646
|
Review
|
English
|
[{"id": "60084080", "name": "Guelph-Waterloo Ctr. Grad. Wk. Chem., University of Waterloo, Waterloo, Ont. N2L 3G1, Canada", "fullName": "Guelph-Waterloo Ctr. Grad. Wk. Chem., University of Waterloo", "reference": "a", "fullAddress": "Waterloo, Ont. N2L 3G1, Canada", "departmentId": null}]
|
600
| 33,958
|
GMRES and integral operators
|
SIAM Journal of Scientific Computing
|
In this paper we show how the properties of integral operators and their approximations are reflected in the performance of the GMRES iteration and how these properties can be used to smooth the GMRES iterates by an implicit application of Nyström interpolation, thereby strengthening the norm in which convergence takes place. The smoothed iteration has very similar properties to Broyden's method. We present an example to illustrate the ideas.
|
["Kelley C.T.", "Xue Z.Q."]
|
["26642949300", "55427110500"]
| 1,996
| 13
|
["Broyden's method", "GMRES iteration", "Integral equations"]
|
10.1137/0917015
|
Article
|
English
|
[{"id": "60004923", "name": "Ctr. for Res. in Sci. Computation, Department of Mathematics, North Carolina State University, Raleigh, NC 27695-8205, P.O. Box 8205, United States", "fullName": "Ctr. for Res. in Sci. Computation, Department of Mathematics, North Carolina State University", "reference": "a", "fullAddress": "Raleigh, NC 27695-8205, P.O. Box 8205, United States", "departmentId": "112742332"}]
|
601
| 34,004
|
Towards a general construction of nonstandard R<sub>h</sub>-matrices as contraction limits of R<sub>q</sub>-matrices: The U<sub>h</sub>(sl(N)) algebra case
|
Modern Physics Letters A
|
A class of transformations of R<sub>q</sub>-matrices is introduced such that the q → 1 limit gives explicit nonstandard R<sub>h</sub>-matrices. The transformation matrix is singular as q → 1. For the transformed matrix, the singularities, however, cancel yielding a well-defined construction. Our method can be implemented systematically on R<sub>q</sub>-matrices of all dimensions and not only for q-deformed sl(2) algebra but also for algebras of higher dimensions. Explicit constructions are presented starting with U<sub>q</sub>(sl(2)) and U<sub>q</sub>(sl(3)), while choosing R<sub>q</sub> for (fund. rep.) ⊗ (arbitrary irrep.). The treatment for the general case of U<sub>q</sub>(sl(N)) algebras is indicated. Our method yields nonstandard deformations along with a nonlinear map of the h-Borel subalgebra on the corresponding classical Borel subalgebra. For U<sub>h</sub>(sl(2)) this map is extended to the whole algebra and compared with the other proposed by us previously. The usual classical coproduct on U(sl(2)) and the non-cocommutative coproduct structure on U<sub>h</sub>(sl(2)) are related via Drinfeld twist operators, determined up to O(h<sup>2</sup>) for both of these nonlinear maps.
|
["Abdesselam B.", "Chakrabarti A.", "Chakrabarti R."]
|
["6602112866", "7202579084", "56240663300"]
| 1,998
| 14
|
[]
|
10.1142/S021773239800084X
|
Article
|
English
|
[{"id": "60013425", "name": "Centre de Physique Théorique, Ecole Polytechnique, 91128 Palaiseau Cedex, France", "fullName": "Centre de Physique Théorique, Ecole Polytechnique", "reference": "a", "fullAddress": "91128 Palaiseau Cedex, France", "departmentId": null}, {"id": "60068759", "name": "Institute of Computer Systems, University of Mascara, 2900 Mascara, Mamounia Street, Algeria", "fullName": "Institute of Computer Systems, University of Mascara", "reference": "b", "fullAddress": "2900 Mascara, Mamounia Street, Algeria", "departmentId": "104745450"}, {"id": "60008648", "name": "Department of Theoretical Physics, University of Madras, Guindy Campus, Madras 600025, India", "fullName": "Department of Theoretical Physics, University of Madras, Guindy Campus", "reference": "c", "fullAddress": "Madras 600025, India", "departmentId": "113690806"}]
|
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