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we identify a new hydrodynamical instability in protoplanetary discs that may arise due to variations in the dust - to - gas ratio and may lead to concentration of dust grains within a disc. the instability can arise due to dust settling, which produces a vertical compositional entropy gradient. the entropy gradient dr...
arxiv:1507.05499
experience replay \ citep { lin1993reinforcement, mnih2015human } is a widely used technique to achieve efficient use of data and improved performance in rl algorithms. in experience replay, past transitions are stored in a memory buffer and re - used during learning. various suggestions for sampling schemes from the r...
arxiv:2112.04229
cherenkov telescopes play a major role in the growth of the tev astronomy which, in 20 years, has reached the status of an important branch of astrophysics, because of the observations of the violent, non thermal processes in the extreme band of the electromagnetic spectrum above several tens of gev up to several tens ...
arxiv:1010.2208
in this paper, we propose an optimized field / circuit coupling approach for the simulation of magnetothermal transients in superconducting magnets. the approach improves the convergence of the iterative coupling scheme between a magnetothermal partial differential model and an electrical lumped - element circuit. such...
arxiv:1702.00958
recent statistical analysis of two extragalactic observational surveys strongly indicate a sublinear kennicutt - schmidt ( ks ) relationship between the star formation rate ( sigsfr ) and molecular gas surface density ( sigmol ). here, we consider the consequences of these results in the context of common assumptions, ...
arxiv:1404.5964
in a recent work, the cross section measurement of the 64zn ( p, alpha ) 61cu reaction was used to prove that the standard alpha - nucleus optical potentials used in astrophysical network calculation fail to reproduce the experimental data at energies relevant for heavy element nucleosynthesis. in the present paper the...
arxiv:1802.02802
we study the pure su ( 3 ) gauge theory in 2 + 1 dimensions on the lattice using ' t hooft ' s twisted boundary conditions to force non - vanishing center flux through the finite volume. in this way we measure the free energy of spacelike center vortices as an order parameter for the deconfinement transition. the trans...
arxiv:1012.0723
the growing advancements in autonomous vehicles ( avs ) have emphasized the critical need to prioritize the absolute safety of av maneuvers, especially in dynamic and unpredictable environments or situations. this objective becomes even more challenging due to the uniqueness of every traffic situation / condition. to c...
arxiv:2305.17941
we report the fabrication of mgb2 with bulk superconducting properties by conventional solid state methods at temperatures as low as 550 c. mg deficiencies of the type mg1 - xb2 were tested. tc was found to decrease by about 1k at large x, though the amount of non - stoichiometry, if any, is likely to be very small. fo...
arxiv:cond-mat/0107534
we consider an $ n $ - player game where the players control the drifts of their diffusive states which have no interaction in the noise terms. the aim of each player is to minimize the expected value of her cost, which is a function of the player ' s state and the empirical measure of the states of all the players. ou...
arxiv:2410.18869
we consider the question of the amorphization of metallic alloys by melt quenching, as predicted by molecular dynamics simulations with semi - empirical potentials. the parametrization of the potentials is discussed on the example of the ternary cu - ti - zr transition metals alloy, using as reference the ab - initio s...
arxiv:1506.06530
the host galaxies of the five local, z < 0. 25, long - duration gamma - ray bursts, each of which had a well - documented associated supernova, are all faint and metal - poor compared to the population of local star - forming galaxies. we quantify this statement by using a previous analysis of star - forming galaxies (...
arxiv:astro-ph/0604113
ldp deployments are vulnerable to inference attacks as an adversary can link the noisy responses to their identity and subsequently, auxiliary information using the order of the data. an alternative model, shuffle dp, prevents this by shuffling the noisy responses uniformly at random. however, this limits the data lear...
arxiv:2106.06603
in the 1970s and 1980s, searches performed by l. carter, c. lam, l. thiel, and s. swiercz showed that projective planes of order ten with weight 16 codewords do not exist. these searches required highly specialized and optimized computer programs and required about 2, 000 hours of computing time on mainframe and superm...
arxiv:2001.11973
in order to fully exploit the physics potential of a future high energy e + e - linear collider, a vertex tracker, providing high resolution track reconstruction, is required. hybrid silicon pixel sensors are an attractive option, for the sensor technology, due to their read - out speed and radiation hardness, favoured...
arxiv:hep-ex/9911013
a novel method, the gaussian integral method ( gim ), is presented for calculating void fractions in computational fluid dynamics - discrete element method ( cfd - dem ) simulations. gim is versatile and applicable to various grid types, including structured and unstructured polyhedral meshes, without requiring special...
arxiv:2408.00909
sums of walks for charged particles ( e. g. hofstadter electrons ) on a square lattice in the presence of a magnetic field are evaluated. returning loops are systematically added to directed paths to obtain the unrestricted propagators. expressions are obtained for special values of the magnetic flux - per - plaquette ...
arxiv:cond-mat/9310024
and irrigation in the alluvial south, and catchment systems stretching for tens of kilometers in the hilly north. their palaces had sophisticated drainage systems. writing was invented in mesopotamia, using the cuneiform script. many records on clay tablets and stone inscriptions have survived. these civilizations were...
https://en.wikipedia.org/wiki/History_of_technology
we introduce a system of monadic affine sized types, which substantially generalise usual sized types, and allows this way to capture probabilistic higher - order programs which terminate almost surely. going beyond plain, strong normalisation without losing soundness turns out to be a hard task, which cannot be accomp...
arxiv:1701.04089
organosulfur species are potential major carriers of sulfur in the interstellar medium, as well as interesting ingredients in prebiotic chemistry. the most fundamental question regarding these species is under which conditions they reside in the gas versus solid phase. here, we characterize the thermal desorption kinet...
arxiv:2504.01102
each triangle has three exterior or external circles tangential to the three straight lines containing the three sides of the triangle. among the preliminaries in this paper, is deriving formulas for the radii of the three exterior circles in terms of the triangle ' s sidelengths. after that we focus on heron triangles...
arxiv:0804.4640
electric - field controls of dzyaloshinskii - moriya interactions ( dmis ) have recently been discussed from the microscopic viewpoint. since the dmi plays a critical role in generating topological spin textures ( tsts ) such as the chiral soliton, the magnetic skyrmion, and the magnetic hedgehog, electric - field cont...
arxiv:2505.07210
we investigate the interplay between pre - stress and mechanical properties in random elastic networks. to do this in a controlled fashion, we introduce an algorithm for creating random freestanding frames that support exactly one state of self stress. by multiplying all the bond tensions in this state of self stress b...
arxiv:1812.00611
let bg be the classifying space of an algebraic group over the complex field c. we compute a new stable rational invariant defined by the difference of two coniveau filtrations ( by benoist and ottem ) of a ( projective ) approximation for bg.
arxiv:2106.07061
this paper describes a comprehensive measurement model for the error budget of pulse arrival times with emphasis on intrinsic pulse jitterand plasma propagation effects ( particularly interstellar scattering ), which are stochastic in time and have diverse dependences on radio frequency. to reduce their contribution, t...
arxiv:1010.3785
metallic systems exhibit plasmons as elementary charge excitations. this fundamental concept was reinforced also in high - temperature cuprate superconductors recently, although cuprates are not only layered systems but also strongly correlated electron systems. here, we study how such ubiquitous plasmons leave their m...
arxiv:2208.11421
we present broadband imaging polarimetry of dr21 at 2. 2 $ \ mu $ m. background stars shining through the lobes of the bipolar outflow show polarization aligned with the long axis of the outflow, indicating a magnetic field geometry oriented along the flow axis. there is no indication of a spiral or turbulent magnetic ...
arxiv:astro-ph/0301217
reputation systems are currently used, often with success, to ensure the functioning of online services as well as of e - commerce sites. despite the relationship between reputation and material cooperative behaviours is quite supported, less obvious appears the relationship with informative behaviours, which are cruci...
arxiv:1609.04659
if $ g $ is a compact lie group, $ t $ a maximal torus in $ g $ ( with lie algebras $ \ mathfrak { g } $ and $ \ mathfrak { t } $ respectively ) and $ w $ the corresponding weyl group, then the berry - robbins problem for $ g $, as formulated by sir michael atiyah and roger bielawski, asks whether there exists a contin...
arxiv:1508.04076
efficient symbol detection algorithms carry critical importance for achieving the spatial multiplexing gains promised by multi - input multi - output ( mimo ) systems. in this paper, we consider a maximum a posteriori probability ( map ) based symbol detection algorithm, called m - blast, over uncoded quasi - static mi...
arxiv:1710.01189
quarkonium has long been proposed as one of the golden probes to identify the phase transition from confined hadronic matter to the deconfined quark - gluon plasma in heavy - ion collisions. since then, we have achieved a better understanding, not only about the propagation of quarkonium in - medium, but also about its...
arxiv:1810.00477
for acute ischemic stroke ( ais ) patients with large vessel occlusions, clinicians must decide if the benefit of mechanical thrombectomy ( mtb ) outweighs the risks and potential complications following an invasive procedure. pre - treatment computed tomography ( ct ) and angiography ( cta ) are widely used to charact...
arxiv:2302.04143
the quantum hall effect is observed in a two - dimensional electron gas formed in millimeter - scale hydrogenated graphene, with a mobility less than 10 $ \ mathrm { cm ^ { 2 } / v \ cdot s } $ and corresponding ioffe - regel disorder parameter $ ( k _ { f } \ lambda ) ^ { - 1 } \ gg1 $. in zero magnetic field and low ...
arxiv:1301.1257
in this paper, we investigate the stability of the particle trajectories in fixed field alternating gradient accelerators ( ffa ) in the presence of field errors : the emphasis is on the scaling radial sector ffa type : a collaboration work is on - going in view of better understanding the properties of the 150 mev sca...
arxiv:1710.08772
neutrinos can scatter electrons in water detectors through their magnetic moments and charge radii in addition to the charged and neutral currents channels. the recent solar neutrino charged current event rates announced by sno with the earlier solar and atmospheric neutrino observations from super - kamiokande allows ...
arxiv:hep-ph/0108018
inspired by kernel methods that have been used extensively in achieving efficient facial animation retargeting, this paper presents a solution to retargeting facial animation in virtual character ' s face model based on the kernel projection of latent structure ( kpls ) regression between semantically similar facial ex...
arxiv:1707.09629
in the design of brain - computer interface systems, classification of electroencephalogram ( eeg ) signals is the essential part and a challenging task. recently, as the marginalized discrete wavelet transform ( mdwt ) representations can reveal features related to the transient nature of the eeg signals, the mdwt coe...
arxiv:1808.00814
daily progress notes are common types in the electronic health record ( ehr ) where healthcare providers document the patient ' s daily progress and treatment plans. the ehr is designed to document all the care provided to patients, but it also enables note bloat with extraneous information that distracts from the diag...
arxiv:2303.08038
this paper investigates the hypothesis that the lensing objects towards the large magellanic cloud ( lmc ) are brown dwarfs by analysing the effects of velocity anisotropy on the inferred microlensing masses. to reduce the masses, the transverse velocity of the lenses with respect to the microlensing tube must be minim...
arxiv:astro-ph/9805304
we study existence, uniqueness, and distributional aspects of generalized solutions to the cauchy problem for first - order symmetric ( or hermitian ) hyperbolic systems of partial differential equations with colombeau generalized functions as coefficients and data. the proofs of solvability are based on refined energy...
arxiv:1107.5967
for $ 0 < \ lambda \ le 1 $, let $ \ mathcal { u } ( \ lambda ) $ be the class analytic functions $ f ( z ) = z + \ sum _ { n = 2 } ^ { \ infty } a _ n z ^ n $ in the unit disk $ \ mathbb { d } $ satisfying $ | f ' ( z ) ( z / f ( z ) ) ^ 2 - 1 | < \ lambda $ and $ \ mathcal { u } : = \ mathcal { u } ( 1 ) $. in the pr...
arxiv:2006.15577
we bound the second eigenvalue of random $ d $ - regular graphs, for a wide range of degrees $ d $, using a novel approach based on fourier analysis. let $ g _ { n, d } $ be a uniform random $ d $ - regular graph on $ n $ vertices, and let $ \ lambda ( g _ { n, d } ) $ be its second largest eigenvalue by absolute value...
arxiv:2201.02015
we show that the mapping class group of a handlebody of genus at least 2 ( with any number of marked points or spots ) is exponentially distorted in the mapping class group of its boundary surface. the same holds true for solid tori with at least two marked points or spots.
arxiv:1101.1838
berkeley 59 is a nearby ( $ \ sim $ 1 kpc ) young cluster associated with the sh2 - 171 h { \ sc ii } region. we present deep optical observations of the central $ \ sim $ 2. 5 $ \ times $ 2. 5 pc $ ^ 2 $ area of the cluster, obtained with the 3. 58 - m telescopio nazionale galileo. the $ v $ / ( $ v $ - $ i $ ) color ...
arxiv:1711.09353
developers are starting to write large and complex applications in typescript, a typed dialect of javascript. typescript applications integrate javascript libraries via typed descriptions of their apis called declaration files. definitelytyped is the standard public repository for these files. the repository is populat...
arxiv:2108.08027
%. our dcnn models could be further extended to determine additional parameters needed to model dynamics of interacting galaxy pairs, which is currently accomplished by trial and error method.
arxiv:2002.01238
reverse osmosis and nanofiltration are membrane - based methods that remove solutes from solvent, for instance they remove salts from water ( desalination ). in these methods, an applied pressure is the driving force for solvent to pass the membrane, while most of the solutes are blocked. very important in the theory o...
arxiv:2401.11527
in the minimal supersymmetric standard model ( mssm ) extended by a singlet superfield, when the coupling between the singlet sector and the mssm sector is tiny, the singlet sector can be a quasi dark sector with supersymmetry ( susy ). we investigate the cosmological phenomena in this scenario and obtain the following...
arxiv:2204.01928
let $ k $ be an algebraically closed field of characteristic $ 0 $. for a log curve $ x / k ^ { \ times } $ over the standard log point, we define ( algebraically ) a combinatorial monodromy operator on its log - de rham cohomology group. the invariant part of this action has a cohomological description, it is the du b...
arxiv:1810.11627
vela x is the prototypical example of a pulsar wind nebula whose morphology and detailed structure have been affected by the interaction with the reverse shock of its host supernova remnant. the resulting complex of filamentary structure and mixed - in ejecta embedded in a nebula that is offset from the pulsar provides...
arxiv:1808.03878
the perturbation theory by l. ge et al. [ phys. rev. a 87, 023833 ] for transverse - electric polarized modes in weakly deformed microdisks omits terms related to the variation of the normal derivative of the magnetic field along the boundary. here we show that these terms are necessary to accurately describe microdisk...
arxiv:1811.11631
we formulate a general sufficiency criterion for discreteness of the spectrum of both supersymmmetric and non - su - persymmetric theories with a fermionic contribution. this criterion allows an analysis of hamiltonians in complete form rather than just their semiclassical limits. in such a framework we examine spectra...
arxiv:1011.4791
we report on the observation of half - quantum vortices ( hqvs ) in the easy - plane polar phase of an antiferromagnetic spinor bose - einstein condensate. using in situ magnetization - sensitive imaging, we observe that pairs of hqvs with opposite core magnetization are generated when singly charged quantum vortices a...
arxiv:1503.05648
5 $ \ mu $ m thick smco films were deposited onto si substrates using triode sputtering. a study of the influence of deposition temperature ( tdep < = 600 degrees c ) on the structural, magnetic and mechanical properties has shown that optimum properties ( highest degree of in - plane texture, maximum in - plane coerci...
arxiv:0804.1992
a conducting two - dimensional periodic composite of two anisotropic phases with anisotropic, not necessarily symmetric, conductivity tensors is considered. by finding approximate representations for the relevant operators, an approximation formula is derived for the effective matrix valued conductivity as a function o...
arxiv:1705.02633
there has been some evidence that agility is connected to the group maturity of software development teams. this study aims at conducting group development psychology training with student teams, participating in a project course at university, and compare their group effectiveness score to their agility usage over tim...
arxiv:1904.02466
this work relates quantitatively homogenization to anderson localization for acoustic operators in disordered media. by blending dispersive estimates for homogenized operators and quantitative homogenization of the wave equation, we derive large - scale dispersive estimates for waves in disordered media that we apply t...
arxiv:2304.14046
recent research dealing with magnetocaloric effect ( mce ) study of antiferromagnetic ( afm ) low dimensional spin systems have revealed a number of fascinating ground - state crossover characteristics upon application of external magnetic field. herein, through mce investigation we have explored field - induced quantu...
arxiv:1812.11298
based on the digitized electron micrographs, we investigate a temperature evolution of co / c film. the simple in usage quantitative characterization of the spatial disorder for systems of point objects has been employed. we show that a dominant increase of spatial inhomogeneity of cobalt phase is shifted towards the l...
arxiv:cond-mat/0101144
we present an empirical method for converting single - point near - infrared j, h, and k measurements of fundamental - mode cepheids to mean magnitudes, using complete light curves in v or i bands. the algorithm is based on the template light curves in the near - infrared bandpasses. the mean uncertainty of the method ...
arxiv:astro-ph/0503598
many scientific papers such as those in arxiv and pubmed data collections have abstracts with varying lengths of 50 - 1000 words and average length of approximately 200 words, where longer abstracts typically convey more information about the source paper. up to recently, scientific summarization research has typically...
arxiv:2206.00847
with an excellent balance between speed and accuracy, cutting - edge yolo frameworks have become one of the most efficient algorithms for object detection. however, the performance of using yolo networks is scarcely investigated in brain tumor detection. we propose a novel yolo architecture with reparameterized convolu...
arxiv:2307.16412
transmission spectroscopy of exoplanets has revealed signatures of water vapor, aerosols, and alkali metals in a few dozen exoplanet atmospheres. however, these previous inferences with the hubble and spitzer space telescopes were hindered by the observations ' relatively narrow wavelength range and spectral resolving ...
arxiv:2211.10487
we explore the task of language - guided video segmentation ( lvs ). previous algorithms mostly adopt 3d cnns to learn video representation, struggling to capture long - term context and easily suffering from visual - linguistic misalignment. in light of this, we present locater ( local - global context aware transform...
arxiv:2203.09773
the notion of nondeterminism has disappeared from the current definition of np, which has led to ambiguities in understanding np, and caused fundamental difficulties in studying the relation p versus np. in this paper, we question the equivalence of the two definitions of np, the one defining np as the class of problem...
arxiv:1501.01906
recently, there emerged revived interests of designing automatic programs ( e. g., using genetic / evolutionary algorithms ) to optimize the structure of convolutional neural networks ( cnns ) for a specific task. the challenge in designing such programs lies in how to balance between large search space of the network ...
arxiv:1806.00851
ellis ( 1913 – 2007 ) : american psychologist who in 1955 developed rational emotive behavior therapy. paul erdos ( 1913 – 1996 ) : hungarian mathematician. he published more papers than any other mathematician in history, working with hundreds of collaborators. he worked on problems in combinatorics, graph theory, num...
https://en.wikipedia.org/wiki/List_of_atheists_in_science_and_technology
diagnostic captioning ( dc ) automatically generates a diagnostic text from one or more medical images ( e. g., x - rays, mris ) of a patient. treated as a draft, the generated text may assist clinicians, by providing an initial estimation of the patient ' s condition, speeding up and helping safeguard the diagnostic p...
arxiv:2406.14164
data drifts pose a critical challenge in the lifecycle of machine learning ( ml ) models, affecting their performance and reliability. in response to this challenge, we present a microbenchmark study, called d3bench, which evaluates the efficacy of open - source drift detection tools. d3bench examines the capabilities ...
arxiv:2404.18673
the concept of generalized cross - validation ( gcv ) is applied to modified total generalized variation ( mtgv ) regularization. current implementations of the mtgv regularization rely on manual ( or semi - manual ) hyperparameter optimization, which is both time - consuming and subject to bias. the combination of mtg...
arxiv:2311.11442
we consider self - similar profiles to smoluchowski ' s coagulation equation for which we derive the precise asymptotic behaviour at infinity. more precisely, we look at so - called fat - tailed profiles which decay algebraically and as a consequence have infinite total mass. the results only require mild assumptions o...
arxiv:1703.09192
a class of equations with exponential nonlinearities on a compact riemannian surface is considered. more precisely, we study an asymmetric sinh - gordon problem arising as a mean field equation of the equilibrium turbulence of vortices with variable intensities. we start by performing a blow - up analysis in order to d...
arxiv:1609.05373
moessbauer transmission spectra for the 14. 41 - kev resonant line in 57fe have been collected at room temperature by using 57co ( rh ) commercial source and alpha - fe strain - free single crystal as an absorber. the absorber was magnetized to saturation in the absorber plane perpendicular to the gamma - ray beam axis...
arxiv:1511.04933
we investigate internal localized eigenmodes of the linearized equation around spin discrete breathers in 1d antiferromagnets with on - site easy axis anisotropy. the threshold of occurrence of the internal localized eigenmodes has a typical structure in parameter space depending on the frequency of the spin discrete b...
arxiv:cond-mat/0207053
motivated by realization of the dissipative quantum point contact in ultracold atomic gases, we investigate a two - terminal mesoscopic transport system in which a single - particle loss is locally present in a one - dimensional chain. by means of the dyson equation approach in the keldysh formalism that can incorporat...
arxiv:2206.09088
pattern of confined chemical garden was controlled by the speed of injected fluid, and their mechanism is discussed. a confined chemical garden system was constructed where an aqueous solution of cobalt chloride was injected into a cell filled with sodium silicate solution. the reaction of these two solutions resulted ...
arxiv:1612.04181
we consider the twistor space $ { \ cal p } ^ 6 \ cong { \ mathbb r } ^ 4 { \ times } { \ mathbb c } p ^ 1 $ of $ { \ mathbb r } ^ 4 $ with a non - integrable almost complex structure $ { \ cal j } $ such that the canonical bundle of the almost complex manifold $ ( { \ cal p } ^ 6, { \ cal j } ) $ is trivial. it is sho...
arxiv:2103.11840
the event horizon telescope ( eht ) observations of sgr \, a * resolved the shadow image and emission ring - like structure, which is associated to the photon ring of the supermassive black hole, at the galactic centre, revealing a diameter of $ 51. 8 ~ \ mu \ text { as } $. the ring - like structure is consistent with...
arxiv:2502.16058
we analyze the algebraic structure of the connes fusion tensor product ( cftp ) in the case of bi - finite hilbert modules over a von neumann algebra m. it turns out that all complications in its definition disappear if one uses the closely related bi - modules of bounded vectors. we construct an equivalence of monoida...
arxiv:math/0601045
we determine the jordan - holder decomposition multiplicities of projective and cell modules over periplectic brauer algebras in characteristic zero. these are obtained by developing the combinatorics of certain skew young diagrams. we also establish a useful relationship with the kazhdan - lusztig multiplicities of th...
arxiv:1701.04606
probe requests help mobile devices discover active wi - fi networks. they often contain a multitude of data that can be used to identify and track devices and thereby their users. the past years have been a cat - and - mouse game of improving fingerprinting and introducing countermeasures against fingerprinting. this p...
arxiv:2206.03745
we present models of the evolution of the gaseous and stellar content of galaxies incorporating the formation of h _ 2 out of hi gas as part of such a model. we do so by formulating a subgrid model for gas clouds that uses well - known cloud scaling relations and solves for the hi - h _ 2 balance set by the h _ 2 forma...
arxiv:astro-ph/0603581
we compare optimal static and dynamic solutions in trade execution. an optimal trade execution problem is considered where a trader is looking at a short - term price predictive signal while trading. when the trader creates an instantaneous market impact, it is shown that transaction costs of optimal adaptive strategie...
arxiv:1811.11265
this is a pedagogical paper which explains some ideas in cosmology at a level accessible to undergraduate students. it does not use general relativity, but uses the ideas of newtonian cosmology worked out by milne and mccrea. the cosmological constant is also introduced within a newtonian framework. following standard ...
arxiv:physics/9806004
a dynamical system is controllable if by imposing appropriate external signals on a subset of its nodes, it can be driven from any initial state to any desired state in finite time. here we study the impact of various network characteristics on the minimal number of driver nodes required to control a network. we find t...
arxiv:1203.5161
we consider interactions of fermions with the domain wall bubbles produced during the first order phase transitions. new exact solution of dirac equations and reflection coefficient are obtained.
arxiv:hep-ph/9603395
given a spectral triple $ ( \ mathcal { a }, \ mathcal { h }, d ) \, $ connes associated a canonical differential graded algebra $ \, \ omega _ d ^ \ bullet ( \ mathcal { a } ) $. however, so far this has been computed for very few special cases. we identify suitable hypotheses on a spectral triple that helps one to co...
arxiv:1404.2708
this work proposes a robust data - driven predictive control approach for unknown nonlinear systems in the presence of bounded process and measurement noise. data - driven reachable sets are employed for the controller design instead of using an explicit nonlinear system model. although the process and measurement nois...
arxiv:2211.05867
a kinetic theory of the bohm criterion is developed that is based on positive - exponent velocity moments of the plasma kinetic equation. this result is contrasted with the conventional kinetic bohm criterion that is based on a v ^ { - 1 } moment of the vlasov equation. the salient difference between the two results is...
arxiv:1301.5700
in these notes, we review some recent mathematical results concerning the derivation of effective evolution equations from many body quantum mechanics. in particular, we discuss the emergence of the hartree equation in the so - called mean field regime ( for example, for systems of gravitating bosons ), and we show tha...
arxiv:1111.6995
standard solar models predict a solar luminosity that gradually increased by about 30 % over the past 4. 5 billion years. under the faint sun, earth should have been frozen solid for most of its existence. yet, running water is observed to have been present since very early in earth ' s history. this enigma is known as...
arxiv:astro-ph/0306477
we study the class of endlessly single - mode all - silica photonic crystal fibers with a triangular air - hole cladding. we consider the sensibility to longitudinal nonuniformities and the consequences and limitations for realizing low - loss large - mode area photonic crystal fibers. we also discuss the dominating sc...
arxiv:physics/0302072
the optimal state determination ( or tomography ) is studied for a composite system of two qubits when measurements can be performed on one of the qubits and interactions of the two qubits can be implemented. the goal is to minimize the number of interactions to be used. the algebraic method applied in the paper leads ...
arxiv:quant-ph/0605049
knowledge tracing ( kt ) is to trace the knowledge of students as they solve a sequence of problems represented by their related skills. this involves abstract concepts of students ' states of knowledge and the interactions between those states and skills. therefore, a kt model is designed to predict whether students w...
arxiv:1908.02146
jieao song recently conjectured a formula for the class of a lagrangian plane on a hyperk \ " ahler variety of $ k3 ^ { [ n ] } $ - type in terms of the class of a line on it. we give a proof of this conjecture if the line class is primitive.
arxiv:2206.10288
an invisibility cloak that can hide an arbitrary object external to the cloak itself has not been devised before. in this letter, we introduce a novel way to design a remote cloaking device that makes any object located at a certain distance invisible. this is accomplished using multi - folded transformation optics to ...
arxiv:1511.07577
nowadays, the current neural network models of dialogue generation ( chatbots ) show great promise for generating answers for chatty agents. but they are short - sighted in that they predict utterances one at a time while disregarding their impact on future outcomes. modelling a dialogue ' s future direction is critica...
arxiv:2212.14117
a sufficient condition for the infinite dimensionality of the bergman space of a pseudoconvex domain is given. this condition holds on any pseudoconvex domain that has at least one smooth boundary point of finite type in the sense of d ' angelo.
arxiv:1603.09099
inspired by simulated annealing algorithm, we propose a quantum cooling protocol which includes an annealing process. this protocol can be universally and efficiently applied to various quantum simulators, driving the system from an arbitrary initial state to the ground state with high fidelity. we have described the c...
arxiv:2501.05268
we consider the problem of predicting power outages in an electrical power grid due to hazards produced by convective storms. these storms produce extreme weather phenomena such as intense wind, tornadoes and lightning over a small area. in this paper, we discuss the application of state - of - the - art machine learni...
arxiv:1805.07897