name stringlengths 7 10 | title stringlengths 13 125 | abstract stringlengths 67 3.02k | fulltext stringclasses 1
value | keywords stringlengths 17 734 |
|---|---|---|---|---|
train_1749 | Advanced aerostatic stability analysis of cable-stayed bridges using | finite-element method Based on the concept of limit point instability, an advanced nonlinear finite-element method that can be used to analyze the aerostatic stability of cable-stayed bridges is proposed. Both geometric nonlinearity and three components of wind loads are considered in this method. The example bridge is... | advanced nonlinear finite element method;aerostatic failure mechanism;china;cable-stayed bridges;limit point instability;pitch moment coefficient;wind loads;santou bay cable-stayed bridge;geometric nonlinearity;advanced aerostatic stability analysis | |
train_175 | Diagnostic expert system using non-monotonic reasoning | The objective of this work is to develop an expert system for cucumber disorder diagnosis using non-monotonic reasoning to handle the situation when the system cannot reach a conclusion. One reason for this situation is when the information is incomplete. Another reason is when the domain knowledge itself is incomplete... | default reasoning;inconsistent information;cucumber disorder diagnosis;diagnostic expert system;agriculture;incomplete information;truth maintenance;nonmonotonic reasoning | |
train_1750 | A dynamic method for weighted linear least squares problems | A new method for solving the weighted linear least squares problems with full rank is proposed. Based on the theory of Liapunov's stability, the method associates a dynamic system with a weighted linear least squares problem, whose solution we are interested in and integrates the former numerically by an A-stable numer... | weighted linear least squares problems;dynamic method;a-stable numerical method;lyapunov stability | |
train_1751 | An adaptive time step procedure for a parabolic problem with blow-up | In this paper we introduce and analyze a fully discrete approximation for a parabolic problem with a nonlinear boundary condition which implies that the solutions blow up in finite time. We use standard linear elements with mass lumping for the space variable. For the time discretization we write the problem in an equi... | parabolic problem;adaptive time step procedure;runge-kutta methods;explicit euler approximation;nonlinear boundary condition;fully discrete approximation;standard linear elements | |
train_1752 | Non-nested multi-level solvers for finite element discretisations of mixed | problems We consider a general framework for analysing the convergence of multi-grid solvers applied to finite element discretisations of mixed problems, both of conforming and nonconforming type. As a basic new feature. our approach allows to use different finite element discretisations on each level of the multi-grid... | higher order finite element discretisations;non-nested multi-level solvers;multi-level solvers;multi-grid solvers;finite element discretisations;mixed problems | |
train_1753 | Risk theory with a nonlinear dividend barrier | In the framework of classical risk theory we investigate a surplus process in the presence of a nonlinear dividend barrier and derive equations for two characteristics of such a process, the probability of survival and the expected sum of discounted dividend payments. Number-theoretic solution techniques are developed ... | number-theoretic solution;parabolic dividend barrier;risk theory;discounted dividend payments;exponential claim sizes;numerical illustrations;probability of survival;surplus process;nonlinear dividend barrier | |
train_1754 | Coordination [crisis management] | Communications during a crisis, both internal and external, set the tone during response and carry a message through recovery. The authors describe how to set up a system for information coordination to make sure the right people get the right message, and the organization stays in control | information coordination;crisis management;communications process | |
train_1755 | Theta functions with harmonic coefficients over number fields | We investigate theta functions attached to quadratic forms over a number field K. We establish a functional equation by regarding the theta functions as specializations of symplectic theta functions. By applying a differential operator to the functional equation, we show how theta functions with harmonic coefficients o... | quadratic forms;differential operator;harmonic coefficients;symplectic theta functions;modular transformations;number fields;functional equation | |
train_1756 | On the diophantine equation x/sup 2/+q/sup 2k+1/=y/sup n/ | In this paper it has been proved that if q is an odd prime, q not=7 (mod 8), n is an odd integer >or=5, n is not a multiple of 3 and (h, n)=1, where h is the class number of the filed Q( square root (-q)), then the diophantine equation x/sup 2/+q/sup 2k+1/=y/sup n/ has exactly two families of solutions (q, n, k, x, y) | primitive divisors;odd prime;odd integer;diophantine equation;lucas sequence | |
train_1757 | Even unimodular Gaussian lattices of rank 12 | We classify even unimodular Gaussian lattices of rank 12, that is, even unimodular integral lattices of rank 12 over the ring of Gaussian integers. This is equivalent to the classification of the automorphisms tau with tau /sup 2/=-1 in the automorphism groups of all the Niemeier lattices, which are even unimodular (re... | even unimodular integral lattices;automorphisms;gaussian integers;niemeier lattices;even unimodular gaussian lattices | |
train_1758 | Hilbert modular threefolds of arithmetic genus one | D. Weisser (1981) proved that there are exactly four Galois cubic number fields with Hilbert modular threefolds of arithmetic genus one. In this paper, we extend Weisser's work to cover all cubic number fields. Our main result is that there are exactly 33 fields with Hilbert modular threefolds of arithmetic genus one. ... | galois cubic number fields;arithmetic genus one;hilbert modular threefolds | |
train_1759 | On the p-adic Birch, Swinnerton-Dyer Conjecture for non-semistable reduction | In this paper, we examine the Iwasawa theory of elliptic curves E with additive reduction at an odd prime p. By extending Perrin-Riou's theory to certain nonsemistable representations, we are able to convert Kato's zeta-elements into p-adic L-functions. This allows us to deduce the cotorsion of the Selmer group over th... | lwasawa theory;elliptic curves;additive reduction;perrin-riou's theory;p-adic birch;p-adic l-functions;nonsemistable reduction;cotorsion;selmer group;swinnerton-dyer conjecture;cyclotomic z/sub p/-extension | |
train_176 | Knowledge model reuse: therapy decision through specialisation of a generic | decision model We present the definition of the therapy decision task and its associated Heuristic Multi-Attribute (HM) solving method, in the form of a KADS-style specification. The goal of the therapy decision task is to identify the ideal therapy, for a given patient, in accordance with a set of objectives of a dive... | kads-style specification;generic decision model specialisation;global therapy-evaluation framework;heuristic multi-attribute solving method;therapy decision task;uml;reasoning;software development methodologies;commonkads;knowledge model reuse;constraint language;ontologies;patient preferences;object-oriented analysis ... | |
train_1760 | Dihedral congruence primes and class fields of real quadratic fields | We show that for a real quadratic field F the dihedral congruence primes with respect to F for cusp forms of weight k and quadratic nebentypus are essentially the primes dividing expressions of the form epsilon /sub +//sup k-1/+or-1 where epsilon /sub +/ is a totally positive fundamental unit of F. This extends work of... | class field theory;quadratic nebentypus;dihedral congruence primes;class fields;real quadratic fields;torsion points;modular abelian varieties | |
train_1761 | Superconvergence of discontinuous Galerkin method for nonstationary hyperbolic | equation For the first order nonstationary hyperbolic equation taking the piecewise linear discontinuous Galerkin solver, we prove that under the uniform rectangular partition, such a discontinuous solver, after postprocessing, can have two and half approximative order which is half order higher than the optimal estima... | rectangular partition;piecewise linear discontinuous galerkin solver;nonstationary hyperbolic equation;approximative order;superconvergence of discontinuous galerkin method | |
train_1762 | Laguerre pseudospectral method for nonlinear partial differential equations | The Laguerre Gauss-Radau interpolation is investigated. Some approximation results are obtained. As an example, the Laguerre pseudospectral scheme is constructed for the BBM equation. The stability and the convergence of proposed scheme are proved. The numerical results show the high accuracy of this approach | approximation results;nonlinear partial differential equations;nonlinear differential equations;numerical results;laguerre pseudospectral method;stability;laguerre gauss-radau interpolation;bbm equation | |
train_1763 | Numerical studies of 2D free surface waves with fixed bottom | The motion of surface waves under the effect of bottom is a very interesting and challenging phenomenon in the nature. we use boundary integral method to compute and analyze this problem. In the linear analysis, the linearized equations have bounded error increase under some compatible conditions. This contributes to t... | numerical studies;linear analysis;boundary integral method;linearized equations;instable kelvin-helmholtz terms;2d free surface waves | |
train_1764 | Two-scale curved element method for elliptic problems with small periodic | coefficients This paper is concerned with the second order elliptic problems with small periodic coefficients on a bounded domain with a curved boundary. A two-scale curved element method which couples linear elements and isoparametric elements is proposed. The error estimate is obtained over the given smooth domain. F... | two-scale curved element method;error estimate;linear elements;curved boundary;small periodic coefficients;additive schwarz method;bounded domain;second order elliptic problems;isoparametric element method;isoparametric elements;elliptic problems | |
train_1765 | On bandlimited scaling function | This paper discusses band-limited scaling function, especially the single interval band case and three interval band cases. Their relationship to oversampling property and weakly translation invariance are also studied. At the end, we propose an open problem | weakly translation invariance;oversampling property;interval band case;bandlimited scaling function | |
train_1766 | A note on vector cascade algorithm | The focus of this paper is on the relationship between accuracy of multivariate refinable vector and vector cascade algorithm. We show that, if the vector cascade algorithm (1.5) with isotropic dilation converges to a vector-valued function with regularity, then the initial function must satisfy the Strang-Fix conditio... | strang-fix conditions;multivariate refinable vector;vector cascade algorithm;isotropic dilation;vector-valued function;matrix algebra | |
train_1767 | Bivariate fractal interpolation functions on rectangular domains | Non-tensor product bivariate fractal interpolation functions defined on gridded rectangular domains are constructed. Linear spaces consisting of these functions are introduced. The relevant Lagrange interpolation problem is discussed. A negative result about the existence of affine fractal interpolation functions defin... | linear spaces;lagrange interpolation problem;rectangular domains;affine fractal interpolation functions;gridded rectangular domains;bivariate fractal interpolation functions | |
train_1768 | Isogenous of the elliptic curves over the rationals | An elliptic curve is a pair (E, O), where E is a smooth projective curve of genus 1 and O is a point of E, called the point at infinity. Every elliptic curve can be given by a Weierstrass equation E : y/sup 2/ + a/sub 1/xy + a/sub 3/y = x/sup 3/ + a/sub 2/x/sup 2/ + a/sub 4/x + a/sub 6/. Let Q be the set of rationals. ... | smooth projective curve;mazur's theorem;elliptic curves isogenous;explicit model;rationals;weierstrass equation;cyclic kernels | |
train_1769 | Transformation rules and strategies for functional-logic programs | This paper abstracts the contents of a PhD dissertation entitled 'Transformation Rules and Strategies for Functional-Logic Programs' which has been recently defended. These techniques are based on fold/unfold transformations and they can be used to optimize integrated (functional-logic) programs for a wide class of app... | experimental results;program transformation rules;declarative languages;functional programming;artificial intelligence;functional-logic programs;fold-unfold transformations;synth;logic programming | |
train_177 | Turning telecommunications call details to churn prediction: a data mining | approach As deregulation, new technologies, and new competitors open up the mobile telecommunications industry, churn prediction and management has become of great concern to mobile service providers. A mobile service provider wishing to retain its subscribers needs to be able to predict which of them may be at-risk of... | mobile telecommunications industry;telecommunications call details;call pattern changes;lift factors;multi-classifier class-combiner approach;skewed class distribution;decision tree induction;customer demographics;customer retention efforts;deregulation;subscriber contractual information;mobile service providers | |
train_1770 | New developments in inductive learning | Any intelligent system, whether natural or artificial, must have three characteristics: knowledge, reasoning, and learning. Artificial intelligence (AI) studies these three aspects in artificial systems. Briefly, we could say that knowledge refers to the system's world model, and reasoning to the manipulation of this k... | new developments;artificial intelligence;decision trees;reasoning;inductive learning;knowledge;intelligent system | |
train_1771 | Quadratic Gauss sums over finite commutative rings | This article explicitly determines the quadratic Gauss sum over finite commutative rings | quadratic gauss sum;finite commutative rings | |
train_1772 | The effects of technology on midcareer librarians | This article investigates technology competency requirements in the library profession. Using the position advertisements in American Libraries in five-year increments over a twenty-year period (1970-1990), the article examines and evaluates the advertised qualifications of positions and attempts to see if midcareer li... | job market;library profession;midcareer librarians;technology competency requirements | |
train_1773 | Happily ever after: plateauing as a means for long-term career satisfaction | Little did I know when I attended Judith Bardwick's presentation on plateauing at the ALA annual convention in 1988 that it would turn out to be one of the most valuable sessions I would attend at any library conference, since it has enabled me to understand the phenomenon of plateauing and to use the strategies she su... | long-term career satisfaction;librarians;personal life;plateauing | |
train_1774 | A work journal [librarianship] | Keeping a work journal can be useful in exploring one's thoughts and feelings about work challenges and work decisions. It can help bring about greater fulfillment in one's work life by facilitating self-renewal, change, the search for new meaning, and job satisfaction. One example of a work journal which I kept in 199... | change;work challenges;job satisfaction;technology;further education;self-renewal;work journal;job exchange;work decisions;professional writing;midlife career librarians | |
train_1775 | Are we there yet?: facing the never-ending speed and change of technology in | midlife This essay is a personal reflection on entering librarianship in middle age at a time when the profession, like society in general, is experiencing rapidly accelerating change. Much of this change is due to the increased use of computers and information technologies in the library setting. These aids in the pro... | dissemination;middle age;changing technology;collection;storage;computers;information technologies;librarianship;retrieval | |
train_1776 | Job rotation in an academic library: damned if you do and damned if you don't! | This article considers job rotation-the systematic movement of employees from one job to another-as one of the many tools within the organizational development tool kit. There is a brief consideration of useful print and Internet literature on the subject as well as a discussion of the pros and cons of job rotation. Th... | ryerson university library;organizational development;systematic employee movement;job rotation;academic library | |
train_1777 | Midlife career choices: how are they different from other career choices? | It was 1963 when Candy Start began working in libraries. Libraries seemed to be a refuge from change, a dependable environment devoted primarily to preservation. She was mistaken. Technological changes in every decade of her experience have affected how and where she used her MLS. Far from a static refuge, libraries ha... | productivity;technological changes;midlife career choices;libraries | |
train_1778 | HeLIN pilot mentoring scheme | The health care libraries unit coordinates, facilitates, and promotes continuing personal development for all staff in the Health Libraries and Information Network (HeLIN) of the Oxford Deanery (UK). It supports the development of a culture of lifelong learning and recognizes that CPD should help deliver organizational... | continuing personal development;health care libraries unit;midcareer librarians;helin pilot mentoring scheme;lifelong learning;accreditation;staff;literature review;health libraries and information network;informal support networks | |
train_1779 | Maybe it's not too late to join the circus: books for midlife career management | Midcareer librarians looking for career management help on the bookshelf face thousands of choices. This article reviews thirteen popular career self-help books. The reviewed books cover various aspects of career management and provide information on which might be best suited for particular goals, including career cha... | career change;midlife career management;libraries;librarians;personal self-evaluation;professional self-evaluation;career self-help books | |
train_178 | A parallelized indexing method for large-scale case-based reasoning | Case-based reasoning (CBR) is a problem solving methodology commonly seen in artificial intelligence. It can correctly take advantage of the situations and methods in former cases to find out suitable solutions for new problems. CBR must accurately retrieve similar prior cases for getting a good performance. In the pas... | bitwise indexing;problem solving methodology;performance;artificial intelligence;parallelized indexing method;similar prior case retrieval;large-scale case-based reasoning;experiments | |
train_1780 | Migrating to public librarianship: depart on time to ensure a smooth flight | Career change can be a difficult, time-consuming, and anxiety-laden process for anyone contemplating this important decision. The challenges faced by librarians considering the move from academic to public librarianship can be equally and significantly demanding. To most outsiders, at least on the surface, it may appea... | public librarianship;career change;library technology;work environments;job-related duties;work responsibilities;public library;professional librarians;academic library | |
train_1781 | Making it to the major leagues: career movement between library and archival | professions and from small college to large university libraries Issues of career movement and change are examined between library and archival fields and from small colleges to large universities. Issues examined include professional education and training, initial career-planning and placement, continuing education, ... | job market;midcareer;continuing education;professional education;training;librarian;large university libraries;archival profession;work experience;personal skills;small college library;library profession;occupational development;career movement | |
train_1782 | Exploring the sabbatical or other leave as a means of energizing a career | This article challenges librarians to create leaves that will not only inspire professional growth but also renewal. It presents a framework for developing a successful leave, incorporating useful advice from librarians at Concordia University (Montreal). As food for thought, the article offers examples of specific opt... | sabbatical leave;career;midlife leave;library staff;librarians;professional growth | |
train_1783 | Becoming a chief librarian: an analysis of transition stages in academic | library leadership The author explores how the four-part model of transition cycles identified by Nicholson and West (1988) applies to becoming a chief librarian of an academic library. The four stages: preparation, encounter, adjustment, and stabilization, are considered from the micro-, mezzo-, and macrolevels of the... | organization;transition stages;transition cycles model;social impact;psychological impact;job;chief librarian;academic library leadership | |
train_1784 | CyberEthics bibliography 2002: a select list of recent works | Included in the 2002 annual bibliography update is a select list of recent books and conference proceedings that have been published since 2000. Also included is a select list of special issues of journals and periodicals that were recently published. For additional lists of recently published books and articles, see i... | cyberethics bibliography;conference proceedings;special issues;2002 annual bibliography;journals;periodicals;recent books | |
train_1785 | The effect of a male-oriented computer gaming culture on careers in the | computer industry If careers in the computer industry were viewed, it would be evident that there is a conspicuous gender gap between the number of male and female employees. The same gap can be observed at the college level where males are dominating females as to those who pursue and obtain a degree in computer scien... | cognitive processing;male stereotypes;computer science degree;computer games;spatial learning;gender gap;computer industry;marketing;careers;female employees;computer literacy | |
train_1786 | A humane tool for aiding computer science advisors, computer science students, | and parents Over the past few years, the computer science department faculty at Baylor has observed that some students who perform adequately during the freshman and sophomore years have substantial difficulty during the junior and senior years of study. Baylor University is an institution committed to being caring of ... | computer science students;student care;course performance data;humane tool;baylor university;regression study;computer science majors;sophomore year;computer science advisors;parents | |
train_1787 | The theory of information reversal | The end of the industrial age coincides with the advent of the information society as the next model of social and economic organization, which brings about significant changes in the way modern man conceives work and the social environment. The functional basis of the new model is pivoted upon the effort to formulate ... | case study;industrial age;digital library;information society;social organization;information reversal theory;economic organization;information systems | |
train_1788 | Resolving Web user on the fly | Identity authentication systems and procedures are rapidly becoming central issues in the practice and study of information systems development and security. Requirements for Web transaction security (WTS) include strong authentication of a user, non-repudiation and encryption of all traffic. In this paper, we present ... | nonrepudiation;information systems security;traffic;web transaction security;identity authentication systems;information systems development;encryption;electronic commerce transactions | |
train_1789 | Dousing terrorist funding: mission possible? [banks] | The government is tightening its grip on terrorist money flows. But as the banking industry continues to expand its Patriot Act compliance activities, it is with the realization that a great deal of work remains to be done before the American financial system can become truly airtight. Identification instruments, espec... | patriot act;identification;terrorist funding;banking | |
train_179 | Document-based workflow modeling: a case-based reasoning approach | A workflow model is useful for business process analysis. A well-built workflow can help a company streamline its internal processes by reducing overhead. The results of workflow modeling need to be managed as information assets in a systematic fashion. Reusing these results is likely to enhance the quality of the mode... | information assets;design output reuse;business process analysis;company;case-based reasoning;document-based workflow modeling | |
train_1790 | Copyright of electronic publishing | With the spreading of the Internet and the wide use of computers, electronic publishing is becoming an indispensable measure to gain knowledge and skills. Meanwhile, copyright is facing much more infringement than ever in this electronic environment. So, it is a key factor to effectively protect copyright of electronic... | internet;fair use;copyright protection;copyright infringement;copyrighted work;electronic environment;electronic publishing copyright | |
train_1791 | The pedagogy of on-line learning: a report from the University of the Highlands | and Islands Millennium Institute Authoritative sources concerned with computer-aided learning, resource-based learning and on-line learning and teaching are generally agreed that, in addition to subject matter expertise and technical support, the quality of the learning materials and the learning experiences of student... | internet;staff development;computer-aided learning;university of the highlands and islands project;distance education;technical support;online learning;pedagogy;resource-based learning;educational course design;teaching | |
train_1792 | Database technology in digital libraries | Database technology advancements have provided many opportunities for libraries. These advancements can bring the world closer together through information accessibility. Digital library projects have been established worldwide to, ultimately, fulfil the needs of end users through more efficiency and convenience. Resou... | information accessibility;resource sharing;database technology;managerial issues;digital library projects;interoperability;metadata;digital libraries;data quality;user interface;end users;query processing | |
train_1793 | The paradigm of viral communication | The IIW Institute of Information Management (www.IIW.de) is dealing with commercial applications of digital technologies, such as the Internet, digital printing, and many more. A study which has been carried out by the institute, identifies viral messages as a new paradigm of communication, mostly found in the area of ... | internet;commercial applications;viral messages;computer virus;direct marketing;e-mails;business;viral communication paradigm | |
train_1794 | Well-posed anisotropic diffusion for image denoising | A nonlinear iterative smoothing filter based on a second-order partial differential equation is introduced. It smooths out the image according to an anisotropic diffusion process. The approach is based on a smooth approximation of the total variation (TV) functional which overcomes the non-differentiability of the TV f... | linear smoothing;image denoising;nonlinear iterative smoothing filter;causality;image restoration problem;selective smoothing;total variation functional;higher time discretisation steps;cfl condition;well-posed anisotropic diffusion;random gaussian noise;second-order partial differential equation;discrete scheme | |
train_1795 | New voice over Internet protocol technique with hierarchical data security | protection The authors propose a voice over Internet protocol (VoIP) technique with a new hierarchical data security protection (HDSP) scheme. The proposed HDSP scheme can maintain the voice quality degraded from packet loss and preserve high data security. It performs both the data inter-leaving on the inter-frame of ... | random bit-string sequence;voip;software simulation;hdsp scheme;packet loss;voice over internet protocol;packet voice communications;chaotic system;statistical measures;hierarchical data security protection;data encryption;high data security;data interleaving | |
train_1796 | Taylor series based two-dimensional digital differentiators | A new type of Taylor series based 2-D finite difference approximation is presented, and it is shown that the coefficients of these approximations are not unique. Explicit formulas are presented for one of the possible sets of coefficients for an arbitrary order, by extending the previously presented 1-D approximations.... | frequency response;2d fir digital differentiators;2d finite difference approximation;magnitude response;fir digital filters;taylor series;maximally linear digital differentiators;nyquist frequencies;two-dimensional digital differentiators | |
train_1797 | Use of periodic and monotonic activation functions in multilayer feedforward | neural networks trained by extended Kalman filter algorithm The authors investigate the convergence and pruning performance of multilayer feedforward neural networks with different types of neuronal activation functions in solving various problems. Three types of activation functions are adopted in the network, namely,... | sigmoid function;handwritten digit recognition;pruning performance;ekf algorithm;sunspot series prediction;parity generation;periodic activation functions;4-point xor logic function;convergence;multilayer feedforward neural networks;neuronal activation functions;piecewise linear function approximation;sinusoidal functi... | |
train_1798 | Robustness evaluation of a minimal RBF neural network for | nonlinear-data-storage-channel equalisation The authors present a performance-robustness evaluation of the recently developed minimal resource allocation network (MRAN) for equalisation in highly nonlinear magnetic recording channels in disc storage systems. Unlike communication systems, equalisation of signals in thes... | minimal resource allocation network;rbf neural network;disc storage systems;digital magnetic recording;jitter noise;nonlinear-data-storage-channel equalisation;highly nonlinear distortions;data-dependent noise;highly nonlinear magnetic recording channels;mran equaliser;msdr equaliser;robustness evaluation;maximum signa... | |
train_1799 | Steady-state mean-square error analysis of the cross-correlation and constant | modulus algorithm in a MIMO convolutive system The cross-correlation and constant modulus algorithm (CC-CMA) has been proven to be an effective approach in the problem of joint blind equalisation and source separation in a multi-input and multi-output system. In the paper, the steady-state mean-square error performance... | energy preservation approach;constant modulus algorithm;multi-input multi-output system;joint blind equalisation;cross-correlation;cc-cma;noise-free environment;mimo convolutive system;steady-state mean-square error analysis;source separation | |
train_18 | Differential and integral calculus on discrete time series data | It has been found that discontinuity plays a crucial role in natural evolutions (Lin 1998). In this presentation, we will generalize the idea of integration and differentiation, we developed in calculus, to the study of time series in the hope that the problem of outliers and discontinuities can be resolved more succes... | integration;time series;prediction;outliers;differentiation;natural evolutions | |
train_180 | Problems with my PDA | Tom Berry has lost his PDA, and now he has an even better understanding of the risks and benefits of working on the move | benefits;risks;pda;mobile technology | |
train_1800 | Multi-output regression using a locally regularised orthogonal least-squares | algorithm The paper considers data modelling using multi-output regression models. A locally regularised orthogonal least-squares (LROLS) algorithm is proposed for constructing sparse multi-output regression models that generalise well. By associating each regressor in the regression model with an individual regularisa... | data modelling;multi-output regression models;parsimonious model;sparse multi-output regression models;lrols algorithm;nonlinear system modelling;locally regularised orthogonal least-squares algorithm | |
train_1801 | Least load dispatching algorithm for parallel Web server nodes | A least load dispatching algorithm for distributing requests to parallel Web server nodes is described. In this algorithm, the load offered to a node by a request is estimated based on the expected transfer time of the corresponding reply through the Internet. This loading information is then used by the algorithm to i... | internet;parallel web server nodes;world wide web server;random dispatching algorithms;throughput;nasa access logs;round-robin dispatching algorithms;transfer time;clarknet access logs;least load dispatching algorithm | |
train_1802 | Novel TCP congestion control scheme and its performance evaluation | A novel self-tuning proportional and derivative (ST-PD) control based TCP congestion control scheme is proposed. The new scheme approaches the congestion control problem from a control-theoretical perspective and overcomes several Important limitations associated with existing TCP congestion control schemes, which are ... | tcp congestion control scheme;buffer occupancy;connection path;performance evaluation;lossy links;control-theoretical perspective;self-tuning proportional-derivative control;bandwidth-delay product;fuzzy logic controller;bottleneck node;pd controller | |
train_1803 | Linear complexity of polyphase power residue sequences | The well known family of binary Legendre or quadratic residue sequences can be generalised to the multiple-valued case by employing a polyphase representation. These p-phase sequences, with p prime, also have prime length L, and can be constructed from the index sequence of length L or, equivalently, from the cosets of... | cryptographic applications;linear complexity;linear feedback shift registers;polynomials;quadratic residue sequences;key stream ciphers;binary sequences;binary legendre sequences;multiple-valued case;p-phase sequences;polyphase power residue sequences | |
train_1804 | Module placement with boundary constraints using B*-trees | The module placement problem is to determine the co-ordinates of logic modules in a chip such that no two modules overlap and some cost (e.g. silicon area, interconnection length, etc.) is optimised. To shorten connections between inputs and outputs and/or make related modules adjacent, it is desired to place some modu... | boundary constraints;silicon area;logic module placement;interconnection length;b*-tree;simulated annealing algorithm | |
train_1805 | Exact analytical model for the AEP of control signals | An exact analytical model for the aliasing error probability (AEP) in the signature analysis of control signals using a modified signature analyser is presented. The signature analyser used comprises a general-structure two-input compacting module (TICM), which simplifies the motherboard VLSI design by providing a flex... | control signals;signature analyser;binary stream;motherboard vlsi design;high-impedance state;flexible geometry;aep;analytical model;two-input shift registers;two-input compacting module;control stream error probabilities;test pattern length;aliasing error probability;signature analysis | |
train_1806 | Fast and efficient algorithm for the multiplierless realisation of linear DSP | transforms A fast algorithm having a pseudopolynomial run-time and memory requirement in the worst case is developed to generate multiplierless architectures at all wordlengths for constant multiplications in linear DSP transforms. It is also re-emphasised that indefinitely reducing operators for multiplierless archite... | resource folding;memory requirement;wordlengths;final chip area;constant multiplications;multiplierless realisation;linear dsp transforms;pseudopolynomial run-time | |
train_1807 | Regional flux target with minimum energy | An extension of a gradient controllability problem to the case where the target subregion is a part of the boundary of a parabolic system domain is discussed. A definition and some properties adapted to this case are presented. The focus is on the characterisation of the control achieving a regional boundary gradient t... | optimal control;target subregion;minimum energy;regional flux target;parabolic system domain boundary;regional boundary gradient target;numerical algorithm;gradient controllability problem | |
train_1808 | Nonlinearities in NARX polynomial models: representation and estimation | It is shown how nonlinearities are mapped in NARX polynomial models. General expressions are derived for the gain and eigenvalue functions in terms of the regressors and coefficients of NARX models. Such relationships are useful in grey-box identification problems. The results are illustrated using simulated and real d... | eigenvalue functions;gain functions;regressors;nonlinearity estimation;nonlinearity representation;nonlinear autoregressive exogenous-input polynomial model;grey-box identification problems;narx polynomial model nonlinearities | |
train_1809 | Approach to adaptive neural net-based H/sub infinity / control design | An approach is investigated for the adaptive neural net-based H/sub infinity / control design of a class of nonlinear uncertain systems. In the proposed framework, two multilayer feedforward neural networks are constructed as an alternative to approximate the nonlinear system. The neural networks are piecewisely interp... | recurrent neural network;linear matrix inequality problem;piecewise interpolation;multilayer feedforward neural networks;linear differential inclusion model;lmi;linear state feedback;nonlinear uncertain systems;adaptive neural net-based h/sub infinity / control design;control gain matrices | |
train_181 | Electromagnetics computations using the MPI parallel implementation of the | steepest descent fast multipole method (SDFMM) The computational solution of large-scale linear systems of equations necessitates the use of fast algorithms but is also greatly enhanced by employing parallelization techniques. The objective of this work is to demonstrate the speedup achieved by the MPI (message passing... | 4-processor alpha workstation;method of moments;steepest descent fast multipole method;electromagnetics computations;scattering problems;2 gbyte;667 mhz;xeon shared memory processor;scattered magnetic field;large-scale linear systems;450 mhz;multiple processors;message passing interface;mpi parallel implementation;matr... | |
train_1810 | Input-output based pole-placement controller for a class of time-delay systems | A controller structure valid for SISO plants involving both internal and external point delays is presented. The control signal is based only on the input and output plant signals. The controller allows finite or infinite spectrum assignment. The most important feature of the proposed controller is that it only involve... | i/o-based pole-placement controller;and external point delays;infinite spectrum assignment;finite spectrum assignment;controller synthesis;filtering;computational cost;internal point delays;siso plants;point-delayed signals;input-output based pole-placement controller;time-delay systems | |
train_1811 | Adaptive tracking controller design for robotic systems using Gaussian wavelet | networks An adaptive tracking control design for robotic systems using Gaussian wavelet networks is proposed. A Gaussian wavelet network with accurate approximation capability is employed to approximate the unknown dynamics of robotic systems by using an adaptive learning algorithm that can learn the parameters of the ... | adaptive tracking controller design;approximation errors;closed-loop system;lyapunov theory;six-link robot manipulator;gaussian wavelet networks;accurate approximation capability;robotic systems;unknown dynamics;robust control law;adaptive learning algorithm | |
train_1812 | Computing the frequency response of systems affinely depending on uncertain | parameters The computation of the frequency response of systems depending affinely on uncertain parameters can be reduced to that of all its one-dimensional edge plants while the image of such an edge plant at a fixed frequency is an arc or a line segment in the complex plane. Based on this conclusion, four computation... | line segment;frequency response;robustness analysis;nichols-plot;frequency-domain design methods;arc;robustness design;bode-plot;uncertain parameters;one-dimensional edge plants;affine systems;nyquist-plot | |
train_1813 | LMI approach to digital redesign of linear time-invariant systems | A simple design methodology for the digital redesign of static state feedback controllers by using linear matrix inequalities is presented. The proposed method provides close matching of the states between the original continuous-time system and those of the digitally redesigned system with a guaranteed stability. Spec... | guaranteed stability;design methodology;lmi approach;digital redesign;crane system;linear matrix inequalities;continuous-time system;position control;linear time-invariant systems;closed-loop stability;numerical optimisation technique | |
train_1814 | Control of integral processes with dead-time. 2. Quantitative analysis | For part 1, see ibid., p.285-90, (2002). Several different control schemes for integral processes with dead time resulted in the same disturbance response. It has already been shown that such a response is subideal. Hence, it is necessary to quantitatively analyse the achievable specifications and the robust stability ... | gain-uncertainty bound;maximum dynamic error;step-disturbance response;robustness;sufficient condition;maximum decay rate;approximate recovery time;integral processes;dead-time;robust stability regions;disturbance response;control action bound;quantitative analysis | |
train_1815 | Control of integral processes with dead-time. 1. Disturbance observer-based 2 | DOF control scheme A disturbance observer-based control scheme (a version of 2 DOF internal model control) which is very effective in controlling integral processes with dead time is presented. The controller can be designed to reject ramp disturbances as well as step disturbances and even arbitrary disturbances. When ... | time constant;robustness;integral processes;dead-time;disturbance response;2 dof internal model control;disturbance observer-based 2 dof control scheme;set-point response;ramp disturbances rejection | |
train_1816 | Hamiltonian modelling and nonlinear disturbance attenuation control of TCSC for | improving power system stability To tackle the obstacle of applying passivity-based control (PBC) to power systems, an affine non-linear system widely existing in power systems is formulated as a standard Hamiltonian system using a pre-feedback method. The port controlled Hamiltonian with dissipation (PCHD) model of a ... | passivity-based control;nonlinear disturbance attenuation control;power system stability;nonlinear adaptive l/sub 2/ gain control method;thyristor controlled serial compensator;hamiltonian modelling;parametric perturbations;pre-feedback method;hamiltonian function;port controlled hamiltonian with dissipation model;affi... | |
train_1817 | Nonlinear adaptive control via sliding-mode state and perturbation observer | The paper presents a nonlinear adaptive controller (NAC) for single-input single-output feedback linearisable nonlinear systems. A sliding-mode state and perturbation observer is designed to estimate the system states and perturbation which includes the combined effect of system nonlinearities, uncertainties and extern... | synchronous generator control;external disturbances;sliding-mode state observer;flc;siso feedback linearisable nonlinear systems;single-generator infinite-bus power system;convergence;perturbation observer;unmodelled system dynamics;parameter uncertainties;nac;nonlinear adaptive control;state-feedback linearising contr... | |
train_1818 | Sliding-mode control scheme for a class of continuous chemical reactors | The synthesis of a robust control law for regulation control of a class of relative-degree-one nonlinear systems is presented. The control design is based on a sliding-mode uncertainty estimator, developed under a framework of algebraic-differential concepts. The closed-loop stability for the underlying closed-loop sys... | sustained disturbances;continuous chemical reactors;closed-loop system;noise measurements;robust control law synthesis;sliding-mode uncertainty estimator;relative-degree-one nonlinear systems;averaging techniques;closed-loop stability;sliding-mode control scheme;algebraic-differential concepts;model uncertainties | |
train_1819 | Structural interpretation of matched pole-zero discretisation | Deals with matched pole-zero discretisation, which has been used in practice for hand calculations in the digital redesign of continuous-time systems but available only in the transfer-function form. Since this form is inconvenient for characterising the time-domain properties of sampled-data loops and for computerisin... | observability;controllability;structural interpretation;sampled-data loops;closed-loop system;state-space formulation;digital simulations;time-domain properties;continuous-time systems;hold-equivalent discrete-time model;matched pole-zero discretisation | |
train_182 | Phase transition for parking blocks, Brownian excursion and coalescence | In this paper, we consider hashing with linear probing for a hashing table with m places, n items (n<m), and l=m-n empty places. For a noncomputer science-minded reader, we shall use the metaphore of n cars parking on m places: each car c/sub i/ chooses a place p/sub i/ at random, and if p/sub i/ is occupied, c/sub i/ ... | brownian excursion;hashing;parking blocks;linear probing;coalescence;empirical processes | |
train_1820 | Fast, accurate and stable simulation of power electronic systems using virtual | resistors and capacitors Simulation of power electronic circuits remains a problem due to the high level of stiffness brought about by the modelling of switches as biresistors i.e. very low turn-on resistance and very high turn-off resistance. The merits and drawbacks of two modelling methods that address this problem ... | voltage discontinuity softening;virtual resistors;ringing effects;computer simulation;turn-on resistance;switching nodes;dc traction system;high turn-off resistance;power electronic systems simulation;power system blockset software;mesh analysis technique;virtual capacitors;switch modelling | |
train_1821 | Performance, design and control of a series-parallel (CL/sup 2/-type) resonant | DC/DC converter The three-element resonant network has various topological alternatives, one of which, a prospective compound topology, is investigated in detail. The converter uses one capacitor (C) and two inductors (L/sup 2/), to form a compound type CL/sup 2/ network. Various advantages and limitations of the conve... | performance;inductors;design procedure;three-element resonant network;series-parallel resonant dc/dc power converter;lagging power factor mode;capacitor;switching frequency;pulse-width modulation | |
train_1822 | Single-phase half-bridge converter topology for power quality compensation | A high power factor half-bridge rectifier with neutral point switch clamped scheme is proposed. Three power switches are employed in the proposed rectifier. Two PWM control schemes are used to draw a sinusoidal line current with low current distortion. The control signals of the power switches are derived from the DC l... | dc link voltage regulator;sinusoidal line current;line current command tracking;harmonic currents elimination;hysteresis current control scheme;neutral point switch clamped scheme;current distortion;circuit configuration;power switches control signals;pwm control schemes;dc link voltage balance compensator;line current... | |
train_1823 | Single-phase shunt active power filter with harmonic detection | An advanced active power filter for the compensation of instantaneous harmonic current components in nonlinear current loads is presented. A signal processing technique using an adaptive neural network algorithm is applied for the detection of harmonic components generated by nonlinear current loads and it can efficien... | instantaneous harmonic current components compensation;signal processing technique;simulation;adaptive neural network algorithm;harmonic detection;instantaneous harmonic components;nonlinear current loads;single-phase shunt active power filter | |
train_1824 | Parallel operation of capacity-limited three-phase four-wire active power | filters Three-phase four-wire active power filters (APFs) are presented that can be paralleled to enlarge the system capacity and reliability. The APF employs the PWM four-leg voltage-source inverter. A decoupling control approach for the leg connected to the neutral line is proposed such that the switching of all legs... | 6 kva;unbalanced power compensation;zero neutral-line current;decoupling control approach;zero-sequence load current compensation;capacity-limited three-phase four-wire active power filters;parallel operation;control design;leg switching;reactive power compensation;pwm four-leg voltage-source inverter;control performan... | |
train_1825 | Fuzzy logic controlled shunt active power filter for power quality improvement | The simulation and experimental study of a fuzzy logic controlled, three-phase shunt active power filter to improve power quality by compensating harmonics and reactive power required by a nonlinear load is presented. The advantage of fuzzy control is that it is based on a linguistic description and does not require a ... | switching signals;pwm pattern generation;carrierless hysteresis based current control;micro-controller;three-phase shunt active power filter;power quality improvement;reactive power compensation;fuzzy logic control simulation;control performance;harmonics compensation;nonlinear load | |
train_1826 | Modeling shape and topology of low-resolution density maps of biological | macromolecules We develop an efficient way of representing the geometry and topology of volumetric datasets of biological structures from medium to low resolution, aiming at storing and querying them in a database framework. We make use of a new vector quantization algorithm to select the points within the macromolecul... | vector quantization algorithm;probability density function;database framework;biological macromolecules;three-dimensional points;cavities;connectivity;channels;compact representation;low-resolution density maps;volumetric datasets;biological structures;general model;medium resolution data;data representation;structural... | |
train_1827 | Gossip is synteny: Incomplete gossip and the syntenic distance between genomes | The syntenic distance between two genomes is given by the minimum number of fusions, fissions, and translocations required to transform one into the other, ignoring the order of genes within chromosomes. Computing this distance is NP-hard. In the present work, we give a tight connection between syntenic distance and th... | comparative genomics;running time;incomplete gossip problem;genomes;chromosomes;syntenic distance;np-hard | |
train_1828 | Exploiting structure in quantified formulas | We study the computational problem "find the value of the quantified formula obtained by quantifying the variables in a sum of terms." The "sum" can be based on any commutative monoid, the "quantifiers" need only satisfy two simple conditions, and the variables can have any finite domain. This problem is a generalizati... | satisfiability problems;data structure;generic algorithms;structure tree;quantified formulas;hierarchically specified problems;monoid operations;commutative monoid;computational complexity;dynamic programming;quantifier symbols;function symbols;constraint satisfaction problems;structure exploitation | |
train_1829 | Improved approximation of Max-Cut on graphs of bounded degree | Let alpha approximately=0.87856 denote the best approximation ratio currently known for the Max-Cut problem on general graphs. We consider a semidefinite relaxation of the Max-Cut problem, round it using the random hyperplane rounding technique of M.X. Goemans and D.P. Williamson (1995), and then add a local improvemen... | computer assisted analysis;bounded degree graph;2-regular graphs;best approximation ratio;approximation ratio;semidefinite relaxation;max-cut approximation | |
train_183 | Asymptotic analysis of (3, 2, 1)-Shell Sort | We analyze the (3, 2, 1)-Shell Sort algorithm under the usual random permutation model | algorithm;local limit theorem;moderate-sized lists;additive functional;asymptotic analysis;markov chain;random permutation;sorting;shell sort;poissonization | |
train_1830 | Approximation of pathwidth of outerplanar graphs | There exists a polynomial time algorithm to compute the pathwidth of outerplanar graphs, but the large exponent makes this algorithm impractical. In this paper, we give an algorithm that, given a biconnected outerplanar graph G, finds a path decomposition of G of pathwidth at most twice the pathwidth of G plus one. To ... | path decomposition;polynomial time algorithm;outerplanar graphs;biconnected outerplanar graph;pathwidth approximation | |
train_1831 | Fast broadcasting and gossiping in radio networks | We establish an O(n log/sup 2/ n) upper bound on the time for deterministic distributed broadcasting in multi-hop radio networks with unknown topology. This nearly matches the known lower bound of Omega (n log n). The fastest previously known algorithm for this problem works in time O(n/sup 3/2/). Using our broadcastin... | fast broadcasting;upper bound;deterministic distributed broadcasting;radio networks;gossiping | |
train_1832 | A linear time algorithm for recognizing regular Boolean functions | A positive (or monotone) Boolean function is regular if its variables are naturally ordered, left to fight, by decreasing strength, so that shifting the nonzero component of any true vector to the left always yields another true vector. This paper considers the problem of recognizing whether a positive function f is re... | true vector;monotone boolean function;linear time algorithm;regular boolean functions;positive function;2-monotonic functions;nonzero component | |
train_1833 | British Standard 7666 as a framework for geocoding land and property | information the UK The article examines the role of British Standard 7666 in the development of a national framework for geocoding land and property information in the United Kingdom. The author assesses how local authorities, and other agencies concerned with property and address datasets, are coping with the introduc... | public rights of way;property information;local authorities;national cadastral service;land information systems;land information;street gazetteer;uk;national land and property gazetteer;addressing standard;property gazetteer;nlpg;idea;united kingdom;land gazetteer;address datasets;property datasets;improvement and deve... | |
train_1834 | A formal model of correctness in a cadastre | A key issue for cadastral systems is the maintenance of their correctness. Correctness is defined to be the proper correspondence between the valid legal situation and the content of the cadastre. This correspondence is generally difficult to achieve, since the cadastre is not a complete representation of all aspects i... | situation calculus;formalized model;formal model;minimal case study;formal correctness model;transfer of ownership;legal situation;cadastre;cadastral systems;correctness maintenance | |
train_1835 | Establishing an urban digital cadastre: analytical reconstruction of parcel | boundaries A new method for generating a spatially accurate, legally supportive and operationally efficient cadastral database of the urban cadastral reality is described. The definition and compilation of an accurate cadastral database (achieving a standard deviation smaller than 0.1 m) is based on an analytical recon... | land information systems;cadastral adjustment process;lis;geographic information systems;field reconstruction process;parcel boundaries;analytical reconstruction;spatially accurate cadastral database;urban digital cadastre;urban cadastral reality;old field books;standard deviation;traverse networks;gps control points;g... | |
train_1836 | Parcel boundary identification with computer-assisted boundary overlay process | for Taiwan The study investigates the design of a process for parcel boundary identification with cadastral map overlay using the principle of least squares. The objective of this research is to provide an objective tool for boundary identification survey. The proposed process includes an adjustment model, a weighting ... | weighted least squares adjustment;objective tool;boundary identification survey;gauss-marker model;cadastral map overlay;taiwan;computer assisted boundary overlay process;parcel boundary identification;adjustment model;weighting scheme;geographic information system | |
train_1837 | A review of methodologies used in research on cadastral development | World-wide, much attention has been given to cadastral development. As a consequence of experiences made during recent decades, several authors have stated the need for research in the domain of cadastre and proposed methodologies to be used. The paper contributes to the acceptance of research methodologies needed for ... | case study;political aspects;economic conditions;economic aspects;geodetic survey profession;social sciences;cadastre;land registration;cadastral development methodologies;research methodologies;geodetic surveyors | |
train_1838 | Anticipating the further development of cadastral systems | Although the paper recognises the merits of the evolution of cadastral systems towards an increased capability over time, it promotes a radical introduction or overhaul of existing cadastral systems. It encourages the development of a capability to cope with some key drivers of major change. These have been identified ... | user needs;decentralised governance;user organisations;future governance strategy;light regulatory control;developing countries;land administration;cadastral systems development;future user needs;cadastral principles;professional organisations;service delivery;automated environments;globally competitive land markets;hi... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.