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we address the long - standing problem of the existence of a riemannian metric on \ ( s ^ 2 \ times t ^ 2 \ ) with strictly positive biorthogonal curvature ( \ ( k _ { \ text { biort } } ( \ sigma ) > 0 \ ) ). this work tackles this challenge within a weaker, yet geometrically consistent, framework by introducing an af... | arxiv:2502.11914 |
we present a simple result for the action density of the su ( n ) charge one periodic instantons - or calorons - with arbitrary non - trivial polyakov loop p _ oo at spatial infinity. it is shown explicitly that there are n lumps inside the caloron, each of which represents a bps monopole, their masses being related to... | arxiv:hep-th/9806034 |
photoelectron yields of extruded scintillation counters with titanium dioxide coating and embedded wavelength shifting fibers read out by silicon photomultipliers have been measured at the fermilab test beam facility using 120 \, gev protons. the yields were measured as a function of transverse, longitudinal, and angul... | arxiv:1709.06587 |
( abridged ) the motion of a schwarzschild black hole with velocity $ v _ 0 = \ beta _ 0 c $ through a constant magnetic field $ b _ 0 $ in vacuum induces a component of the electric field along the magnetic field, generating a non - zero second poincare electromagnetic invariant $ ^ * f \ cdot f \ neq 0 $. this will p... | arxiv:1101.0639 |
we investigate beamforming and artificial noise generation at the secondary transmitters to establish secure transmission in large scale spectrum sharing networks, where multiple non - colluding eavesdroppers attempt to intercept the secondary transmission. we develop a comprehensive analytical framework to accurately ... | arxiv:1603.03600 |
a detailed characterization of avalanche dynamics of wet granular media in a rotating drum apparatus is presented. the results confirm the existence of the three wetness regimes observed previously : the granular, the correlated and the viscoplastic regime. these regimes show qualitatively different dynamic behaviors w... | arxiv:cond-mat/0207731 |
the popular 3sum conjecture states that there is no strongly subquadratic time algorithm for checking if a given set of integers contains three distinct elements $ x _ 1, x _ 2, x _ 3 $ such that $ x _ 1 + x _ 2 = x _ 3 $. a closely related problem is to check if a given set of integers contains distinct elements satis... | arxiv:2001.01289 |
we demonstrate in theory that it is possible to all - electrically manipulate the rkky interaction in a quasi - one - dimensional electron gas embedded in a semiconductor heterostructure, in the presence of rashba and dresselhaus spin - orbit interaction. in an undoped semiconductor quantum wire where intermediate exci... | arxiv:0910.5800 |
multipath propagation of radio waves in indoor / outdoor environments shows a highly irregular behavior as a function of time. typical modeling of this phenomenon assumes the received signal is a stochastic process composed of the superposition of various altered replicas of the transmitted one, their amplitudes and ph... | arxiv:physics/0103048 |
we generalize the results on the asymptotic expansion from gaussian unitary ensembles case to all gaussian ensembles. we derive differential equations on densities and their moment generating functions for all gaussian ensembles. also, we calculate explicit expressions for the moment generating functions for all gaussi... | arxiv:1801.02359 |
a canonical signature of the minimal supersymmetric standard model ( mssm ) is the presence of a neutral higgs boson with mass bounded from above by about 135 gev and standard model ( sm ) - like couplings to the electroweak gauge bosons. in this note we investigate the reach of the tevatron collider for the mssm higgs... | arxiv:1011.5304 |
the energy distributions of ta ions produced in a nanosecond laser - heated plasma at 4 $ \ times $ 10 $ ^ { 15 } $ w / cm $ ^ { 2 } $ are experimentally and theoretically investigated. they are measured far from the target with an electrostatic spectrometer and charge collectors. shadowgraphy and interferometry are us... | arxiv:1811.09297 |
in the framework of the $ \ kappa $ - factorization approach and on the basis of recently determined dgsf, we calculated the production rates of ground and excited ( 2s and d wave ) states of vector mesons and investigated their various kinematical and spin dependencies. we also addressed the issue of s / d wave mixing... | arxiv:hep-ph/0006101 |
determining process - structure - property linkages is one of the key objectives in material science, and uncertainty quantification plays a critical role in understanding both process - structure and structure - property linkages. in this work, we seek to learn a distribution of microstructure parameters that are cons... | arxiv:2010.03603 |
the neutron elastic magnetic form factor gmn has been extracted from quasielastic electron scattering data on deuterium with the cebaf large acceptance spectrometer ( clas ) at jefferson lab. the kinematic coverage of the measurement is continuous from q2 = 1 gev2 to 4. 8 gev2. high precision was achieved by employing ... | arxiv:0811.1716 |
identifying the nature of magnetism, itinerant or localized, remains a major challenge in condensed - matter science. purely localized moments appear only in magnetic insulators, whereas itinerant moments more or less co - exist with localized moments in metallic compounds such as the doped - cuprate or the iron - base... | arxiv:1502.00773 |
we calculate higher - order soft - gluon corrections for the associated production of a top - antitop quark pair and a $ z $ boson ( $ t { \ bar t } z $ production ) in proton - proton collisions. we find that these corrections are numerically dominant and large. we present approximate nnlo ( annlo ) and approximate n ... | arxiv:2410.01214 |
we show that lattice systems, such as the bose - hubbard model, can be simulated on a single nano - or micro - mechanical resonator, by exploiting its many modes. the on - site hamiltonians are engineered by coupling the mechanical modes to the modes of a pair of optical or stripline resonators, and the connections bet... | arxiv:1209.2499 |
a mechanical quality factor of $ 1. 1 \ times 10 ^ { 7 } $ was obtained for the 199 hz bending vibrational mode in a monocrystalline sapphire fiber at 6 k. consequently, we confirm that pendulum thermal noise of cryogenic mirrors used for gravitational wave detectors can be reduced by the sapphire fiber suspension. | arxiv:gr-qc/0007071 |
we prove a microlocal lower bound on the mass of high energy eigenfunctions of the laplacian on compact surfaces of negative curvature, and more generally on surfaces with anosov geodesic flows. this implies controllability for the schr \ " odinger equation by any nonempty open set, and shows that every semiclassical m... | arxiv:1906.08923 |
dna computing is an unconventional approach to computing that harnesses the parallelism and information storage capabilities of dna molecules. it has emerged as a promising field with potential applications in solving a variety of computationally complex problems. this paper explores a dna computing algorithm for boole... | arxiv:2406.00407 |
experimental quantum physics and computing platforms rely on sophisticated computer control and timing systems that must be deterministic. an exemplar is the sequence used to create a bose - einstein condensate at the university of illinois, which involves 46, 812 analog and digital transitions over 100 seconds with 20... | arxiv:2311.09437 |
a novel hybrid design based electronic voting system is proposed, implemented and analyzed. the proposed system uses two voter verification techniques to give better results in comparison to single identification based systems. finger print and facial recognition based methods are used for voter identification. cross v... | arxiv:1801.02430 |
encoding information from 2d views of an object into a 3d representation is crucial for generalized 3d feature extraction. such features can then enable 3d reconstruction, 3d generation, and other applications. we propose goembed ( gradient origin embeddings ) that encodes input 2d images into any 3d representation, wi... | arxiv:2312.08744 |
spatial modulation ( sm ) is a transmission scheme that uses multiple transmit antennas but only one transmit rf chain. at each time instant, only one among the transmit antennas will be active and the others remain silent. the index of the active transmit antenna will also convey information bits in addition to the in... | arxiv:1401.6543 |
we examine the foraging behavior of stingless bees ( tetragonula biroi friese ) with regard to their preference of food location. the three factors considered are distance of the food source from the hive, direction of the food source, and height of the food source from the ground. single - factor experiments for each ... | arxiv:1310.3919 |
the distribution of the stellar rotation axes of 113 main sequence stars in the open cluster praesepe are examined by using current photometric rotation periods, spectroscopic rotation velocities, and estimated stellar radii. three different samples of stellar rotation data on spotted stars from the galactic field and ... | arxiv:1803.03619 |
in this paper we consider the cubic regularization ( cr ) method for minimizing a twice continuously differentiable function. while the cr method is widely recognized as a globally convergent variant of newton ' s method with superior iteration complexity, existing results on its local quadratic convergence require a s... | arxiv:1801.09387 |
by composing graphical models with deep learning architectures, we learn generative models with the strengths of both frameworks. the structured variational autoencoder ( svae ) inherits structure and interpretability from graphical models, and flexible likelihoods for high - dimensional data from deep learning, but po... | arxiv:2306.08230 |
the maximum balanced subgraph problem ( mbsp ) is the problem of finding a subgraph of a signed graph that is balanced and maximizes the cardinality of its vertex set. we are interested in the exact solution of the problem : an improved version of a branch - and - cut algorithm is proposed. extensive computational expe... | arxiv:1312.4345 |
recent advances in 3d gaussian splatting ( 3dgs ) have garnered significant attention in computer vision and computer graphics due to its high rendering speed and remarkable quality. while extant research has endeavored to extend the application of 3dgs from static to dynamic scenes, such efforts have been consistently... | arxiv:2409.07759 |
in ai and law, systems that are designed for decision support should be explainable when pursuing justice. in order for these systems to be fair and responsible, they should make correct decisions and make them using a sound and transparent rationale. in this paper, we introduce a knowledge - driven method for model - ... | arxiv:2105.06758 |
let $ g = ( v, e ) $ be a simple graph. we investigate the cohen - macaulayness and algebraic invariants, such as the castelnuovo - mumford regularity and the projective dimension, of the toric ring $ k [ g ] $ via those of toric rings associated to induced subgraphs of $ g $. | arxiv:1703.08270 |
in this paper we study subsequences of random numbers. in kamae ( 1973 ), selection functions that depend only on coordinates are studied, and their necessary and sufficient condition for the selected sequences to be normal numbers is given. in van lambalgen ( 1987 ), an algorithmic analogy to the theorem is conjecture... | arxiv:1106.3153 |
the 7. 3 ghz ( 350 mhz bandwidth ) earth observation satellite ( eos ) band, while not protected, is used for passive sea surface temperature ( p - sst ) measurements that provide important data for weather forecasts, coastal disaster prevention, climate modeling, and oceanographic research. the full 7 ghz band ( 7. 12... | arxiv:2412.11212 |
observations of strongly gravitationally lensed gravitational wave ( gw ) sources provide a unique opportunity for constraining their transverse motion, which otherwise is exceedingly hard for gw mergers in general. strong lensing makes this possible when two or more images of the lensed gw source are observed, as each... | arxiv:2412.14159 |
let $ \ lambda b _ { p } $, where $ \ lambda $ is a nonzero complex number, denote a constant - weighted backward shift operators on $ l ^ { p } $ for $ 1 \ leq p < \ infty $. in this article, we investigate, in topologically conjugacy, the complete classification for $ \ lambda b _ { p } $. | arxiv:0903.4555 |
the arbitrariness in how the logarithm is defined within the qcd series for the inclusive electroproduction cross - section is shown to affect the summation to all orders in $ \ alpha _ s $ of leading and successively - subleading logarithms within that perturbative series, even though such summations largely eliminate... | arxiv:hep-ph/0306064 |
it has not been known whether preferential dispersal is adaptive in fluctuating environments. we investigate the effect of preferential and random dispersals in bet - hedging systems by using a discrete stochastic metapopulation model, where each site fluctuates between good and bad environments with temporal correlati... | arxiv:1402.6373 |
feynman diagrams ( notably the triangle diagram ) involving heavy enough particles contain branch cuts on the physical sheet - anomalous thresholds - which, unlike normal thresholds and bound - state poles, do not correspond to any asymptotic $ n $ - particle state. ` ` who ordered that? " we show that anomalous thresh... | arxiv:2212.06157 |
we present a commentary on the famous 1964 paper of john bell that rules out the entire class of underlying hidden variable theories for quantum mechanics that are local. | arxiv:2408.04483 |
the well - known cornell quark - antiquark potential in momentum space contains singularities both in its one - gluon - exchange ( oge ) and linear confining parts, which prevents a direct use of the convenient nystr \ " om method to solve the corresponding bound - state integral equation for the meson masses. while it... | arxiv:2407.21789 |
the development of sensible microscopic models is essential to elucidate the normal - state and superconducting properties of the iron - based superconductors. because these materials are mostly metallic, a good starting point is an effective low - energy model that captures the electronic states near the fermi level a... | arxiv:1607.00865 |
we theoretically investigated the ground states of coupled arrays of cavity quantum electrodynamical ( cavity qed ) systems in presence of two photon modes. within the gutzwiller - type variational approach, we found the first - order quantum phase transition between mott insulating and superfluid phases as well as the... | arxiv:1301.1869 |
the zps - additive codes of length n are subgroups of zps ^ n, and can be seen as a generalization of linear codes over z2, z4, or more general over z2s. in this paper, we show two methods for computing a parity - check matrix of a zps - additive code from a generator matrix of the code in standard form. we also compar... | arxiv:2401.05247 |
hedge has been proposed as an adaptive scheme, which guides an agent ' s decision in resource selection and distribution problems that can be modeled as a multi - armed bandit full information game. such problems are encountered in the areas of computer and communication networks, e. g. network path selection, load dis... | arxiv:1812.03131 |
patent data provides rich information about technical inventions, but does not disclose the ethnic origin of inventors. in this paper, i use supervised learning techniques to infer this information. to do so, i construct a dataset of 95 ' 202 labeled names and train an artificial recurrent neural network with long - sh... | arxiv:2201.00578 |
( abridged ) the structure formed by the shocked winds of a massive star and a non - accreting pulsar in a binary suffers periodic and random variations of orbital and non - linear dynamical origin. for the 1st time, we simulate in 3 d the interaction of isotropic stellar and relativistic pulsar winds along 1 full orbi... | arxiv:1411.7892 |
we establish a link between the new theory of $ q $ - deformed rational numbers and the classical burau representation of the braid group $ \ mathrm { b } _ 3 $. we apply this link to the open problem of classification of faithful complex specializations of this representation. as a result we provide an answer to this ... | arxiv:2309.04240 |
the phase diagram of the 2d ising model confined between two infinite walls and subject to opposing surface fields and to a bulk " gravitational " field is calculated by means of density matrix renormalization methods. in absence of gravity two phase coexistence is restricted to temperatures below the wetting temperatu... | arxiv:cond-mat/9703226 |
motile organisms can form stable agglomerates such as cities or colonies. in the outbreak of a highly contagious disease, the control of large - scale epidemic spread depends on factors like the number and size of agglomerates, travel rate between them, and disease recovery rate. while the emergence of agglomerates per... | arxiv:2303.17645 |
transition metal dichalcogenides have attracted much attention recently due to their potential applications in spintronics and photonics as a result of the indirect to direct band gap transition and the emergence of the spin - valley coupling phenomenon upon moving from the bulk to monolayer limit. here, we report high... | arxiv:1312.7631 |
while existing audio - visual speech separation ( avss ) methods primarily concentrate on the audio - visual fusion strategy for two - speaker separation, they demonstrate a severe performance drop in the multi - speaker separation scenarios. typically, avss methods employ guiding videos to sequentially isolate individ... | arxiv:2407.19224 |
a method for computing minimum ignition energies for gaseous fuel mixtures with detailed and reduced chemistry, by numerical integration of time - dependent conservation equations in a spherically symmetrical configuration, is presented and discussed, testing its general characteristics and accuracy. the method is appl... | arxiv:2202.02571 |
we present low - temperature dynamic properties of the quantum two - dimensional antiferromagnetic heisenberg model with spin s = 1 / 2. the calculation of the dynamic correlation function is performed by combining a projection operator formalism and the modified spin - wave theory ( msw ), which gives a gap in the dis... | arxiv:cond-mat/0505458 |
in this contribution, we present a variational space - time formulation which generates an optimal feed - forward controller for geometrically exact strings. more concretely, the optimization problem is solved with an indirect approach, and the space - time finite element method translates the problem to a set of algeb... | arxiv:2501.11522 |
co $ ^ { 2 + } $ ions in an octahedral crystal field, stabilise a j $ _ { eff } $ = 1 / 2 ground state with an orbital degree of freedom and have been recently put forward for realising kitaev interactions, a prediction we have tested by investigating spin dynamics in two cobalt honeycomb lattice compounds, na $ _ 2 $ ... | arxiv:2012.00006 |
in this paper we introduce the concept of lateral trigger probability ( ltp ) function, i. e., the probability for an extensive air shower ( eas ) to trigger an individual detector of a ground based array as a function of distance to the shower axis, taking into account energy, mass and direction of the primary cosmic ... | arxiv:1111.6645 |
research focus on optimal control problems brought on by fractional differential equations has been extensively applied in practice. however, because they are still open - ended and challenging, a number of problems with fractional mathematical modeling and problems with optimal control require additional study. using ... | arxiv:2201.08689 |
the influence of the scalar unparticle and anomalous couplings at muon colliders in final states with multiple photons in the randall - sundrum model is evaluated in detail. the results indicate that with fixed collision energies, the total cross - sections for the production of multiple photons depend strongly on the ... | arxiv:2304.04931 |
an asymptotic formula for the number of partitions into p - cores is derived. as a byproduct some integer valued trigonometric sums are found | arxiv:0806.3163 |
virtual analog ( va ) modeling aims to simulate the behavior of hardware circuits via algorithms to replicate their tone digitally. dynamic range compressor ( drc ) is an audio processing module that controls the dynamics of a track by reducing and amplifying the volumes of loud and quiet sounds, which is essential in ... | arxiv:2504.04589 |
the evolution of the properties of a finite density electronic system as the electron - phonon coupling is increased are investigated in the holstein model using the dynamical mean - field theory ( dmft ). we compare the spinless fermion case, in which only isolated polarons can be formed, with the spinful model in whi... | arxiv:cond-mat/0509542 |
following the demonstration that gravitational waves impart linear momentum, it is argued that if they are polarized they should impart angular momentum to appropriately placed ' test rods ' in their path. a general formula for this angular momentum is obtained and used to provide expressions for the angular momentum i... | arxiv:gr-qc/0701126 |
suppressing monopoles and vortices by introducing large chemical potentials for them in the wilson action for the su ( 2 ) lattice gauge theory, we study the nature of the deconfinement phase transition on n _ \ sigma ^ 3 \ times n _ \ tau lattices for n _ \ tau = 4, 5, 6 and 8 and n _ \ sigma = 8 - - 16. using finite ... | arxiv:hep-lat/0006015 |
a cohomology for product systems of hilbert bimodules is defined via the ext functor. for the class of product systems corresponding to irreversible algebraic dynamics, relevant resolutions are found explicitly and it is shown how the underlying product system can be twisted by the 2 - cocycles. in particular, this pro... | arxiv:1407.7264 |
with in the extended thermodynamics, we study the efficiency $ \ eta _ k $ of critical heat engines for charged black holes in massive gravity for spherical ( $ k = 1 $ ), flat ( $ k = 0 $ ) and hyperbolic ( $ k = - 1 $ ) topologies. although, $ \ eta _ k $ is in general higher ( lower ) for hyperbolic ( spherical ) to... | arxiv:2005.10115 |
embodied agents, trained to explore and navigate indoor photorealistic environments, have achieved impressive results on standard datasets and benchmarks. so far, experiments and evaluations have involved domestic and working scenes like offices, flats, and houses. in this paper, we build and release a new 3d space wit... | arxiv:2204.09069 |
incoherent bremsstrahlung by high - energy particles in crystal is due to the thermal spread of atoms in relation to their equilibrium positions in the lattice. the simulation procedure developed earlier for the incoherent radiation is applied to the case of the electrons and positrons motion in the sinusoidally bent c... | arxiv:1010.2671 |
we present the first detection of solar flare emission at middle - ultraviolet wavelengths around 2000 a by the channel 2 of the large - yield radiometer ( lyra ) onboard the proba2 mission. the flare ( sol20170906 ) was also observed in the channel 1 of lyra centered at the h i lyman - { \ alpha } line at 1216 a, show... | arxiv:1810.09835 |
we present $ v $ and $ i $ photometry for $ \ sim 150 $ globular clusters with $ 20 < v < 27 $ $ \ sim 2. 5 $ arcmin from the centre of m87, the cd galaxy in the virgo cluster. the data were acquired with the hubble space telescope which, with effective resolution 0. 1 arcsec, allows us for the first time to distinguis... | arxiv:astro-ph/9506116 |
the search for signatures of transient, unmodelled gravitational - wave ( gw ) bursts in the data of ground - based interferometric detectors typically uses ` excess - power ' search methods. one of the most challenging problems in the burst - data - analysis is to distinguish between actual gw bursts and spurious nois... | arxiv:gr-qc/0605079 |
visual navigation for autonomous agents is a core task in the fields of computer vision and robotics. learning - based methods, such as deep reinforcement learning, have the potential to outperform the classical solutions developed for this task ; however, they come at a significantly increased computational load. thro... | arxiv:2103.11374 |
we give formulas for the second and third integral homology of an arbitrary finitely generated coxeter group, solely in terms of the corresponding coxeter diagram. the first of these calculations refines a theorem of howlett, while the second is entirely new and is the first explicit formula for the third homology of a... | arxiv:1811.00400 |
in this paper we study the large time behavior of regular solutions to a nematic liquid crystal system in sobolev spaces $ h ^ m ( \ r ^ 3 ) $ for $ m \ geq 0 $. we obtain optimal decay rates in $ h ^ m ( r ^ 3 ) $ spaces, in the sense that the rates coincide with the rates of the underlying linear counterpart. the flu... | arxiv:1208.3007 |
the affine - virasoro ward identities are a system of non - linear differential equations which describe the correlators of all affine - virasoro constructions, including rational and irrational conformal field theory. we study the ward identities in some detail, with several central results. first, we solve for the co... | arxiv:hep-th/9305072 |
we consider a quasi - linear elliptic equation with dirac source terms arising in a generalized self - dual chern - simons - higgs gauge theory. in this paper, we study doubly periodic vortices with arbitrary vortex configuration. first of all, we show that under doubly periodic condition, there are only two types of s... | arxiv:1509.04196 |
we present a quantum master equation describing a bose - einstein condensate with particle loss on one lattice site and particle gain on the other lattice site whose mean - field limit is a non - hermitian pt - symmetric gross - pitaevskii equation. it is shown that the characteristic properties of pt - symmetric syste... | arxiv:1409.6189 |
we present the effective theory for low energy dynamics of a two - dimensional interacting electrons in the presence of a weak short - range disorder and a weak perpendicular magnetic field, the filling factor $ \ nu \ gg 1 $. we investigate the exchange enhancement of the $ g $ - factor, the effective mass and the dec... | arxiv:cond-mat/0203022 |
vision in adverse weather conditions, whether it be snow, rain, or fog is challenging. in these scenarios, scattering and attenuation severly degrades image quality. handling such inclement weather conditions, however, is essential to operate autonomous vehicles, drones and robotic applications where human performance ... | arxiv:2305.02103 |
conventional optical materials are characterized by either a dissipative response, which results in polarization - independent absorption, or by a gain response that leads to wave amplification. in this study, we explore the potential of a peculiar class of materials with chiral - gain properties, where gain selectivel... | arxiv:2410.08962 |
we explore short - distance static correlation functions in the infinite xxz chain using previously derived formulae which represent the correlation functions in factorized form. we compute two - point functions ranging over 2, 3 and 4 lattice sites as functions of the temperature and the magnetic field in the massive ... | arxiv:0908.2232 |
the benchmark for computation is typically given as turing computability ; the ability for a computation to be performed by a turing machine. many languages exploit ( indirect ) encodings of turing machines to demonstrate their ability to support arbitrary computation. however, these encodings are usually by simulating... | arxiv:1404.0545 |
often the domain of software engineering which falls under computer science, which is usually considered a separate discipline. vlsi design engineering vlsi stands for very large - scale integration. it deals with fabrication of ics and various electronic components. in designing an integrated circuit, electronics engi... | https://en.wikipedia.org/wiki/Electronic_engineering |
the large magellanic cloud, a satellite galaxy of the milky way, has been observed with the high energy stereoscopic system ( h. e. s. s. ) above an energy of 100 billion electron volts for a deep exposure of 210 hours. three sources of different types were detected : the pulsar wind nebula of the most energetic pulsar... | arxiv:1501.06578 |
we investigate the effect of contact geometry on the instantaneous thermoelectric response of a quantum dot pushed suddenly into the kondo regime via a gate voltage using time dependent non - crossing approximation and linear response onsager relations. we utilize graphene and metal contacts for this purpose. instantan... | arxiv:1307.8010 |
we investigate structures of hybrid stars, which feature quark core surrounded by a hadronic matter mantle, with super - strong toroidal magnetic fields in full general relativity. modeling the equation of state ( eos ) with a first order transition by bridging the mit bag model for the description of quark matter and ... | arxiv:0910.0327 |
the weak - form estimation of non - linear dynamics ( wendy ) algorithm is extended to accommodate systems of ordinary differential equations that are nonlinear - in - parameters. the extension rests on derived analytic expressions for a likelihood function, its gradient and its hessian matrix. wendy makes use of these... | arxiv:2502.08881 |
in recent years, arrays of radio antennas operating in the mhz regime have shown great potential as detectors in astroparticle physics. in particular, they fulfill an important role in the indirect detection of ultra - high energy cosmic rays. for a proper determination of the energy scale of the primary particles, acc... | arxiv:2308.08272 |
excitons hosted by gan / ( al, ga ) n quantum wells ( qws ) are spatially indirect due to the giant built - in electric field that separates electrons and holes along the growth direction. this electric field, and thus exciton energy, can be reduced by depositing metallic layers on the sample surface. using spatially -... | arxiv:2306.04404 |
actuarial science is the discipline that applies mathematical and statistical methods to assess risk in insurance, pension, finance, investment and other industries and professions. actuaries are professionals trained in this discipline. in many countries, actuaries must demonstrate their competence by passing a series... | https://en.wikipedia.org/wiki/Actuarial_science |
more recent cases include that of charles nemeroff, then the editor - in - chief of neuropsychopharmacology, and a well - documented case involving the drug actonel. authors are expected to keep all study data for later examination even after publication. the failure to keep data may be regarded as misconduct. some sci... | https://en.wikipedia.org/wiki/Scientific_misconduct |
network structure strongly constrains the range of dynamic behaviors available to a complex system. these system dynamics can be classified based on their response to perturbations over time into two distinct regimes, ordered or chaotic, separated by a critical phase transition. numerous studies have shown that the mos... | arxiv:0801.3699 |
we show that the lower bound for the optimal directional discrepancy with respect to the class of rectangles in $ \ mathbb { r } ^ 2 $ rotated in a restricted interval of directions $ [ - \ theta, \ theta ] $ with $ \ theta < \ frac { \ pi } { 4 } $ is of the order at least $ n ^ { 1 / 5 } $ with a constant depending o... | arxiv:2209.12098 |
we show that if a non - amenable, quasi - transitive, unimodular graph $ g $ has all degrees even then it has a factor - of - iid balanced orientation, meaning each vertex has equal in - and outdegree. this result involves extending earlier spectral - theoretic results on bernoulli shifts to the bernoulli graphings of ... | arxiv:2106.12530 |
we demonstrate experimentally an efficient control of light intensity distribution inside a random scattering system. the adaptive wavefront shaping technique is applied to a silicon waveguide containing scattering nanostructures, and the on - chip coupling scheme enables access to all input spatial modes. by selective... | arxiv:1606.05881 |
the brain prepares for learning even before interacting with the environment, by refining and optimizing its structures through spontaneous neural activity that resembles random noise. however, the mechanism of such a process has yet to be thoroughly understood, and it is unclear whether this process can benefit the al... | arxiv:2405.16731 |
we present the first $ l - $ band ( 2. 8 to 4. 1 ~ $ \ mu $ m ) spectroscopy of $ \ kappa $ ~ andromedae ~ b, a $ \ sim20 ~ m _ { \ mathrm { jup } } $ companion orbiting at $ 1 ^ { \ prime \ prime } $ projected separation from its b9 - type stellar host. we combine our large binocular telescope ales integral field spec... | arxiv:2010.02928 |
we investigate competing entanglement dynamics in an open ising - spin chain coupled to an external central ancilla qudit. in studying the real - time behavior following a quench from an unentangled spin - ancilla state, we find that the ancilla entanglement entropy $ s _ { vn ; \ mathcal { a } } $ tracks the dynamical... | arxiv:2103.08517 |
solving statistical learning problems often involves nonconvex optimization. despite the empirical success of nonconvex statistical optimization methods, their global dynamics, especially convergence to the desirable local minima, remain less well understood in theory. in this paper, we propose a new analytic paradigm ... | arxiv:1808.09642 |
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