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comet 157p is a faint object with a history of being prone to unfortunate situations, circumstances, and / or coincidences. several weeks after its 1978 discovery the comet disappeared and remained lost nonstop for twenty five years. rediscovered in 2003 as a new comet, it was about 500 times brighter than in 1978, cau... | arxiv:2309.01923 |
we study the structure of brownian loop - soup clusters in two dimensions. among other things, we obtain the following decomposition of the clusters with critical intensity : when one conditions a loop - soup cluster by its outer boundary $ \ gamma $ ( which is known to be an sle ( 4 ) - type loop ), then the union of ... | arxiv:1509.01180 |
the extraction of process models from text refers to the problem of turning the information contained in an unstructured textual process descriptions into a formal representation, i. e., a process model. several automated approaches have been proposed to tackle this problem, but they are highly heterogeneous in scope a... | arxiv:2110.03754 |
in this work, we give a novel general approach for distribution testing. we describe two techniques : our first technique gives sample - optimal testers, while our second technique gives matching sample lower bounds. as a consequence, we resolve the sample complexity of a wide variety of testing problems. our upper bou... | arxiv:1601.05557 |
we explore the electronic ground states of bernal - stacked multilayer graphenes using the hartree - fock mean - field approximation and the full - parameter band model. we find that the electron - electron interaction tends to open a band gap in multilayer graphenes from bilayer to 8 - layer, while the nature of the i... | arxiv:1705.03725 |
how can individual agents coordinate their actions to achieve a shared objective in distributed systems? this challenge spans economic, technical, and sociological domains, each confronting scalability, heterogeneity, and conflicts between individual and collective goals. in economic markets, a common currency facilita... | arxiv:2410.04619 |
we consider discrete subgroups of the group of orientation preserving isometries of the $ m $ - dimensional hyperbolic space, whose limit set is a $ ( m - 1 ) $ - dimensional real sphere, acting on the $ n $ - dimensional complex projective space for $ n \ geq m $, via an embedding from the group of orientation preserv... | arxiv:2305.00153 |
we present time - resolved, far - ultraviolet ( fuv ) spectroscopy and photometry of the 1. 1 day eclipsing binary system ako 9 in the globular cluster 47 tucanae. the fuv spectrum of ako 9 is blue and exhibits prominent c iv and he ii emission lines. the spectrum broadly resembles that of long - period, cataclysmic va... | arxiv:astro-ph/0309168 |
let $ n, k \ in \ mathbb { n } $ and let $ p _ { n } $ denote the $ n $ th prime number. we define $ p _ { n } ^ { ( k ) } $ recursively as $ p _ { n } ^ { ( 1 ) } : = p _ { n } $ and $ p _ { n } ^ { ( k ) } = p _ { p _ { n } ^ { ( k - 1 ) } } $, that is, $ p _ { n } ^ { ( k ) } $ is the $ p _ { n } ^ { ( k - 1 ) } $ t... | arxiv:1909.12139 |
quantum annealing ( qa ) has been proposed as a quantum enhanced optimization heuristic exploiting tunneling. here, we demonstrate how finite range tunneling can provide considerable computational advantage. for a crafted problem designed to have tall and narrow energy barriers separating local minima, the d - wave 2x ... | arxiv:1512.02206 |
we present deep, near - infrared images of the circumbinary disk surrounding the pre - main - sequence binary star, gg tau a, obtained with nicmos aboard the hubble space telescope. the spatially resolved proto - planetary disk scatters roughly 1. 5 % of the stellar flux, with a near - to - far side flux ratio of ~ 1. ... | arxiv:astro-ph/0204465 |
we present here a new robotic telescope called trappist ( transiting planets and planetesimals small telescope ). equipped with a high - quality ccd camera mounted on a 0. 6 meter light weight optical tube, trappist has been installed in april 2010 at the eso la silla observatory ( chile ), and is now beginning its sci... | arxiv:1101.5807 |
data augmentation greatly increases the amount of data obtained based on labeled data to save on expenses and labor for data collection and labeling. we present a new approach for data augmentation called nine - dot mls ( nd - mls ). this approach is proposed based on the idea of image defor - mation. images are deform... | arxiv:2208.11532 |
we show explicitly, by using astrophysical data plus reasonable assumptions for the bulk viscosity in the cosmic fluid, how the magnitude of this viscosity may be high enough to drive the fluid from its position in the quintessence region at present time $ t = 0 $ across the barrier $ w = - 1 $ into the phantom region ... | arxiv:1509.03489 |
we study an explicit description of semibricks and 2 - term simple - minded collections over preprojective algebras of type $ a $ via arc diagrams. we provide a bijection between the set of noncrossoing arc diagrams ( resp. the set of double arc diagrams ), which is in bijective correspondence with elements of the symm... | arxiv:2010.04353 |
we show that extending an embedding of a graph $ \ gamma $ in a surface to an embedding of a hamiltonian supergraph can be blocked by certain planar subgraphs but, for some subdivisions of $ \ gamma $, hamiltonian extensions must exist. | arxiv:2303.08306 |
two discretizations of the vector nonlinear schrodinger ( nls ) equation are studied. one of these discretizations, referred to as the symmetric system, is a natural vector extension of the scalar integrable discrete nls equation. the other discretization, referred to as the asymmetric system, has an associated linear ... | arxiv:solv-int/9810014 |
the biham - middleton - levine ( bml ) traffic model, a cellular automaton with east - bound and north - bound cars moving by turns on a square lattice, has been an underpinning model in the study of collective behaviour by cars, pedestrians and even internet packages. contrary to initial beliefs that the model exhibit... | arxiv:1502.04587 |
recent neutron scattering experiments in the superconducting state of ybco have been interpreted in terms of a magnetic collective mode whose dispersion relative to the commensurate wavevector has a curvature opposite in sign to a conventional magnon dispersion. the purpose of this article is to demonstrate that simple... | arxiv:cond-mat/0010298 |
this research focuses on predicting the demand for air taxi urban air mobility ( uam ) services during different times of the day in various geographic regions of new york city using machine learning algorithms ( mlas ). several ride - related factors ( such as month of the year, day of the week and time of the day ) a... | arxiv:2103.14604 |
we study the quantum nature of non - bunch - davies states in de sitter space by evaluating chsh inequality on a localized two - atom system. we show that quantum nonlocality can be generated through the markovian evolution of two - atom, witnessed by a violation of chsh inequality on its final equilibrium state. we fi... | arxiv:1806.08923 |
recently, along with the development of quantum information, quantum entanglemant became a hot topic of people. quantum entanglemant is one of the most amazing phenomenon in quantum mechanics that is totally different from classical physics. however, system would interact with environment in the practical quantum infor... | arxiv:1603.08555 |
it is known that any normed vector space which satisfies the parallelogram law is actually an inner product space. for finite dimensional normed vector spaces over r, we formulate an approximate version of this theorem : if a space approximately satisfies the parallelogram law, then it has a near isometry with euclidea... | arxiv:1305.3546 |
we consider the problem associated to recovering the block structure of an ising model given independent observations on the binary hypercube. this new model, called the ising blockmodel, is a perturbation of the mean field approximation of the ising model known as the curie - weiss model : the sites are partitioned in... | arxiv:1612.03880 |
analysis of the data shows that hadron tags of the two standard delphi particle identification packages ribmean and hadsign are weakly correlated. this led to the idea of constructing a neural network for both kaon and proton identification using as input the existing tags from ribmean and hadsign, as well as preprocce... | arxiv:hep-ex/0111081 |
in economic literature, economic complexity is typically approximated on the basis of an economy ' s gross export structure. however, in times of ever increasingly integrated global value chains, gross exports may convey an inaccurate image of a country ' s economic performance since they also incorporate foreign value... | arxiv:2009.07599 |
the observation of electric dipole moments ( edms ) in atomic systems due to parity and time - reversal violating ( p, t - odd ) interactions can probe new physics beyond the standard model and also provide insights into the matter - antimatter asymmetry in the universe. the edms of open - shell atomic systems are sens... | arxiv:1710.10946 |
mid - level features based on visual dictionaries are today a cornerstone of systems for classification and retrieval of images. those state - of - the - art representations depend crucially on the choice of a codebook ( visual dictionary ), which is usually derived from the dataset. in general - purpose, dynamic image... | arxiv:1205.2663 |
face swapping technology used to create " deepfakes " has advanced significantly over the past few years and now enables us to create realistic facial manipulations. current deep learning algorithms to detect deepfakes have shown promising results, however, they require large amounts of training data, and as we show th... | arxiv:2212.02571 |
in many real - world applications, sequential rule mining ( srm ) can provide prediction and recommendation functions for a variety of services. it is an important technique of pattern mining to discover all valuable rules that belong to high - frequency and high - confidence sequential rules. although several algorith... | arxiv:2206.04728 |
in shotgun sequencing, the input string ( typically, a long dna sequence composed of nucleotide bases ) is sequenced as multiple overlapping fragments of much shorter lengths ( called \ textit { reads } ). modelling the shotgun sequencing pipeline as a communication channel for dna data storage, the capacity of this ch... | arxiv:2401.16342 |
named entities are ubiquitous in text that naturally accompanies images, especially in domains such as news or wikipedia articles. in previous work, named entities have been identified as a likely reason for low performance of image - text retrieval models pretrained on wikipedia and evaluated on named entities - free ... | arxiv:2304.13130 |
this paper addresses several questions of feng, gruenhage, and shen which arose from michael ' s theory of continuous selections from countable spaces. we construct an example of a space which is $ l $ - selective but not $ \ mathbb { q } $ - selective from $ \ mathfrak { d } = \ omega _ 1 $, and an $ l $ - selective s... | arxiv:1910.10634 |
we study a family of orthogonal polynomials which generalizes a sequence of polynomials considered by l. carlitz. we show that they are a special case of the sheffer polynomials and point out some interesting connections with certain sobolev orthogonal polynomials. | arxiv:math/0504476 |
imaging fluorescent disease biomarkers in tissues and skin is a non - invasive method to screen for health conditions. we report an automated process that combines intraoral fluorescent porphyrin biomarker imaging, clinical examinations and machine learning for correlation of systemic health conditions with periodontal... | arxiv:1810.10664 |
a theory describing the forces governing the self - assembly of nanoparticles at the solid - liquid interface is developed. in the process, new theoretical results are derived to describe the effect that the field penetration of a point - like particle, into an electrode, has on the image potential energy, and pair int... | arxiv:1709.05494 |
the adoption of battery electric vehicles ( bevs ) may significantly reduce greenhouse gas emissions caused by road transport. however, there is wide disagreement as to how soon battery electric vehicles will play a major role in overall transportation. focusing on battery electric passenger cars, we here analyze bev a... | arxiv:2306.16152 |
we propose a randomized algorithm to compute isomorphisms between finite fields using elliptic curves. to compute an isomorphism between two fields of cardinality $ q ^ n $, our algorithm takes $ $ n ^ { 1 + o ( 1 ) } \ log ^ { 1 + o ( 1 ) } q + \ max _ { \ ell } \ left ( \ ell ^ { n _ \ ell + 1 + o ( 1 ) } \ log ^ { 2... | arxiv:1604.03072 |
we introduce a notion of oriented dialgebra and develop a cohomology theory for oriented dialgebras based on the possibility to mix the standard chain complexes computing group cohomology and associative dialgebra cohomology. we also introduce a $ 1 $ - parameter formal deformation theory for oriented dialgebras and sh... | arxiv:2001.02386 |
determinantal point processes ( dpps ) are a class of repulsive point processes, popular for their relative simplicity. they are traditionally defined via their marginal distributions, but a subset of dpps called " l - ensembles " have tractable likelihoods and are thus particularly easy to work with. indeed, in many a... | arxiv:2107.06345 |
the new numerical version of the wigner approach to quantum mechanics for treatment thermodynamic properties of strongly coupled systems of particles has been developed for extreme conditions, when analytical approximations obtained in different kind of perturbation theories can not be applied. explicit analytical expr... | arxiv:1703.04448 |
with disks and networks providing gigabytes per second, parsing decimal numbers from strings becomes a bottleneck. we consider the problem of parsing decimal numbers to the nearest binary floating - point value. the general problem requires variable - precision arithmetic. however, we need at most 17 digits to represen... | arxiv:2101.11408 |
we study the portfolio selection problem of a long - run investor who is maximising the asymptotic growth rate of her expected utility. we show that, somewhat surprisingly, it is essentially not affected by introduction of a floor constraint which requires the wealth process to dominate a given benchmark at all times. ... | arxiv:1305.6831 |
context : the popularity of cloud computing as the primary platform for developing, deploying, and delivering software is largely driven by the promise of cost savings. therefore, it is surprising that no empirical evidence has been collected to determine whether cost awareness permeates the development process and how... | arxiv:2304.07531 |
analyses of event shapes and forward jet production in deep inelastic scattering at the hera collider are described. the results are compared to qcd predictions. | arxiv:hep-ex/9911047 |
we present an effective model for timing - dependent synaptic plasticity ( stdp ) in terms of two interacting traces, corresponding to the fraction of activated nmda receptors and the ca2 + concentration in the dendritic spine of the postsynaptic neuron. this model intends to bridge the worlds of existing simplistic ph... | arxiv:1410.0557 |
we propose a feasible scheme for teleporting an arbitrary polarization state or entanglement of photons by requiring only single - photon ( sp ) sources, simple linear optical elements and sp quantum non - demolition measurements. an unknown sp polarization state can be faithfully teleported either to a duplicate polar... | arxiv:quant-ph/0202040 |
we analyse a linear lattice boltzmann ( lb ) formulation for simulation of linear acoustic wave propagation in heterogeneous media. we employ the single - relaxation - time bhatnagar - gross - krook ( bgk ) as well as the general multi - relaxation - time ( mrt ) collision operators. by calculating the dispersion relat... | arxiv:1704.03172 |
electric interactions have a strong impact on the structure and dynamics of biomolecules in their native water environment. given the variety of water arrangements in hydration shells and the femto - to subnanosecond time range of structural fluctuations, there is a strong quest for sensitive noninvasive probes of loca... | arxiv:2108.11379 |
deep metric learning is essential for visual recognition. the widely used pair - wise ( or triplet ) based loss objectives cannot make full use of semantical information in training samples or give enough attention to those hard samples during optimization. thus, they often suffer from a slow convergence rate and infer... | arxiv:1903.08923 |
multicellular cable bacteria display an exceptional form of biological conduction, channeling electrical currents across centimeter distances through a regular network of protein fibers embedded in the cell envelope. the fiber conductivity is among the highest recorded for biomaterials, providing a promising outlook fo... | arxiv:2308.09560 |
ordinal regression is a fundamental problem within the field of computer vision, with customised well - trained models on specific tasks. while pre - trained vision - language models ( vlms ) have exhibited impressive performance on various vision tasks, their potential for ordinal regression has received less explorat... | arxiv:2408.03574 |
we study abelian dominance for confinement in terms of the local gluon properties in the maximally abelian ( ma ) gauge in a semi - analytical manner with the help of the lattice qcd. the global weyl symmetry persistently remains as the relic of su ( $ n _ c $ ) in the ma gauge, and provides the ambiguity on the electr... | arxiv:hep-lat/9807025 |
various supernovae ( sn ), compact object coalescences, and tidal disruption events are widely believed to occur embedded in active galactic nuclei ( agn ) accretion disks and generate detectable electromagnetic ( em ) signals. we collectively refer to them as \ emph { agn disk transients }. the inelastic hadronuclear ... | arxiv:2211.13953 |
the redshifted 21 cm line is an emerging tool in cosmology, in principle permitting three - dimensional surveys of our universe that reach unprecedentedly large volumes, previously inaccessible length scales, and hitherto unexplored epochs of our cosmic timeline. large radio telescopes have been constructed for this pu... | arxiv:1907.08211 |
we analyze the capability of prompt photon production in pp and pp ( bar ) collisions to constrain the gluon distribution of the proton, considering data from fixed - target experiments as well as collider measurements. combined fits are performed to these large - p _ t direct gamma cross sections and lepton - proton d... | arxiv:hep-ph/9505404 |
this note is aimed at presenting a new algebraic approach to momentum - space correlators in conformal field theory. as an illustration we present a new lie - algebraic method to compute frequency - space two - point functions for charged scalar operators of cft $ _ { 1 } $ dual to ads $ _ { 2 } $ black hole with const... | arxiv:1309.2939 |
the problem of makespan optimal solving of cooperative path finding ( cpf ) is addressed in this paper. the task in cpf is to relocate a group of agents in a non - colliding way so that each agent eventually reaches its goal location from the given initial location. the abstraction adopted in this work assumes that age... | arxiv:1610.05452 |
oriented bounding box regression is crucial for oriented object detection. however, regression - based methods often suffer from boundary problems and the inconsistency between loss and evaluation metrics. in this paper, a modulated kalman iou loss of approximate skewiou is proposed, named mkiou. to avoid boundary prob... | arxiv:2206.15109 |
we discuss plausible mechanisms to produce bullet - like ejecta from the precessing disk in the ss 433 system. we show that non - steady shocks in the sub - keplerian accretion flow can provide the basic timescale of the ejection interval while the magnetic rubber - band effect of the toroidal flux tubes in this disk c... | arxiv:astro-ph/0208148 |
working with anticommuting weyl ( or mayorana ) spinors in the framework of the van der waerden calculus is standard in supersymmetry. the natural frame for rigorous supersymmetric quantum field theory makes use of operator - valued superdistributions defined on supersymmetric test functions. in turn this makes necessa... | arxiv:hep-th/0408195 |
we combine dark energy survey year 1 clustering and weak lensing data with baryon acoustic oscillations ( bao ) and big bang nucleosynthesis ( bbn ) experiments to constrain the hubble constant. assuming a flat $ \ lambda $ cdm model with minimal neutrino mass ( $ \ sum m _ \ nu = 0. 06 $ ev ) we find $ h _ 0 = 67. 2 ^... | arxiv:1711.00403 |
we study the higgs boson decay into dark matter ( dm ) in the framework of freeze - in at stronger coupling. even though the higgs - dm coupling is significant, up to order one, dm does not thermalize due to the boltzmann suppression of its production at low temperatures. we find that this mechanism leads to observable... | arxiv:2410.21874 |
we present a model of inflation based on a racetrack model without flux stabilization. the initial conditions are set automatically through topological inflation. this ensures that the dilaton is not swept to weak coupling through either thermal effects or fast roll. including the effect of non - dilaton fields we find... | arxiv:hep-th/0503178 |
we present a stochastic epidemic model to study the effect of various preventive measures, such as uniform reduction of contacts and transmission, vaccination, isolation, screening and contact tracing, on a disease outbreak in a homogeneously mixing community. the model is based on an infectivity process, which we defi... | arxiv:2201.09761 |
epidemiologists and social scientists have used the network scale - up method ( nsum ) for over thirty years to estimate the size of a hidden sub - population within a social network. this method involves querying a subset of network nodes about the number of their neighbours belonging to the hidden sub - population. i... | arxiv:2407.10640 |
we investigate the influence of the measure in the path integral for euclidean quantum gravity in four dimensions within the regge calculus. the action is bounded without additional terms by fixing the average lattice spacing. we set the length scale by a parameter $ \ beta $ and consider a scale invariant and a unifor... | arxiv:hep-lat/9204010 |
in this paper we will demonstrate the use of feynman diagrams for one dimensional scattering in quantum mechanics. we will evaluate the s - matrix explicitly for the dirac delta and finite wall potentials by summing the full series of feynman diagrams, illustrating the spirit of perturbation theory. this technique may ... | arxiv:2207.13851 |
we study existence and uniqueness of solutions to a nonlinear elliptic boundary value problem with a general, and possibly singular, lower order term, whose model is $ $ \ begin { cases } - \ delta _ p u = h ( u ) \ mu & \ text { in } \ \ omega, \ \ u > 0 & \ text { in } \ \ omega, \ \ u = 0 & \ text { on } \ \ partial... | arxiv:1709.06042 |
in this note we explicit the notion of hermite interpolant of a multivariate symmetric polynomial, generalizing the notion of lagrange interpolant to the case when there are roots coalescence, an extension of the results on the symmetric hermite interpolation basis by m. - f. roy and a. szpirglas. | arxiv:2501.18507 |
a fundamental challenge in calcium imaging has been to infer the timing of action potentials from the measured noisy calcium fluorescence traces. we systematically evaluate a range of spike inference algorithms on a large benchmark dataset recorded from varying neural tissue ( v1 and retina ) using different calcium in... | arxiv:1503.00135 |
displaystyle u _ { i } } such that for each pair i, j { \ displaystyle i, j } of indices, the restrictions of f i { \ displaystyle f _ { i } } and f j { \ displaystyle f _ { j } } to u i ∩ u j { \ displaystyle u _ { i } \ cap u _ { j } } are equal. then this defines a unique function f : x → y { \ displaystyle f : x \ ... | https://en.wikipedia.org/wiki/Function_(mathematics) |
we consider the load balancing problem in large - scale heterogeneous systems with multiple dispatchers. we introduce a general framework called local - estimation - driven ( led ). under this framework, each dispatcher keeps local ( possibly outdated ) estimates of queue lengths for all the servers, and the dispatchin... | arxiv:2002.08908 |
we introduce hk - legicost, a new three - way parallel corpus of cantonese - english translations, containing 600 + hours of cantonese audio, its standard traditional chinese transcript, and english translation, segmented and aligned at the sentence level. we describe the notable challenges in corpus preparation : segm... | arxiv:2306.11252 |
this study systematically benchmarks several non - fault - tolerant quantum computing algorithms across four distinct optimization problems : max - cut, number partitioning, knapsack, and quantum spin glass. our benchmark includes noisy intermediate - scale quantum ( nisq ) algorithms, such as the variational quantum e... | arxiv:2410.22810 |
unlike their hermitian counterparts, non - hermitian ( nh ) systems may display an exponential sensitivity to boundary conditions and an extensive number of edge - localized states in systems with open boundaries, a phenomena dubbed the " non - hermitian skin effect. " the nh skin effect is one of the primary challenge... | arxiv:2007.03738 |
the use of machine learning or artificial intelligence ( ml / ai ) holds substantial potential toward improving many functions and needs of the public sector. in practice however, integrating ml / ai components into public sector applications is severely limited not only by the fragility of these components and their a... | arxiv:1910.06136 |
in this study, we make non - invasive, remote, passive measurements of the heart beat frequency and determine the map of blood pulsation intensity in a region of interest ( roi ) of skin. the roi used was the forearm of a volunteer. the method employs a regular video camera and visible light, and the video acquisition ... | arxiv:1611.03527 |
we study the higher - spin gauge theory in six - dimensional anti - de sitter space $ ads _ 6 $ that is based on the exceptional lie superalgebra $ f ( 4 ) $. the relevant higher - spin algebra was constructed in arxiv : 1409. 2185 [ hep - th ]. we determine the spectrum of the theory and show that it contains the phys... | arxiv:1608.07582 |
we consider the multi - armed bandit ( mab ) problem, where an agent sequentially chooses actions and observes rewards for the actions it took. while the majority of algorithms try to minimize the regret, i. e., the cumulative difference between the reward of the best action and the agent ' s action, this criterion mig... | arxiv:2008.03959 |
we consider the prompt photon production at modern high energy colliders in the framework of $ k _ t - $ factorization approach. we compare our theoretical predictions with recent experimental data at hera and tevatron, empahasizing the distinction between our theoretical predictions and the results of nlo qcd calculat... | arxiv:hep-ph/0611384 |
we point out that supersymmetric warped geometry can provide a solution to the susy flavor problem, while generating hierarchical yukawa couplings. in supersymmetric theories in a slice of ads _ 5 with the kaluza - klein scale m _ kk much higher than the weak scale, if all visible fields originate from 5d bulk fields a... | arxiv:hep-ph/0301131 |
reproducibility is a fundamental requirement of the scientific process since it enables outcomes to be replicated and verified. computational scientific experiments can benefit from improved reproducibility for many reasons, including validation of results and reuse by other scientists. however, designing reproducible ... | arxiv:1909.00271 |
we introduce algebraic structures known as psybrackets and use them to define invariants of pseudoknots and singular knots and links. psybrackets are niebrzydowski tribrackets with additional structure inspired by the reidemeister moves for pseudoknots and singular knots. examples and computations are provided. | arxiv:2006.02276 |
the compact muon solenoid ( cms ) detector at the cern large hadron collider ( lhc ) is undergoing an extensive phase ii upgrade program to prepare for the challenging conditions of the high - luminosity lhc ( hl - lhc ). a new timing layer is designed to measure minimum ionizing particles ( mips ) with a time resoluti... | arxiv:1810.00350 |
we study an online contextual decision - making problem with resource constraints. at each time period, the decision - maker first predicts a reward vector and resource consumption matrix based on a given context vector and then solves a downstream optimization problem to make a decision. the final goal of the decision... | arxiv:2206.07316 |
we present deep stellar photometry of the bo \ " otes i dwarf spheroidal galaxy in g and i band filters, taken with the dark energy camera at cerro tololo in chile. our analysis reveals a large, extended region of stellar substructure surrounding the dwarf, as well as a distinct over - density encroaching on its tidal ... | arxiv:1607.00447 |
recently jarvis has proved a correspondence between su ( n ) monopoles and rational maps of the riemann sphere into flag manifolds. furthermore, he has outlined a construction to obtain the monopole fields from the rational map. in this paper we examine this construction in some detail and provide explicit examples for... | arxiv:hep-th/9903183 |
estimating 3d hand pose from 2d images is a difficult, inverse problem due to the inherent scale and depth ambiguities. current state - of - the - art methods train fully supervised deep neural networks with 3d ground - truth data. however, acquiring 3d annotations is expensive, typically requiring calibrated multi - v... | arxiv:2003.09282 |
this paper proposed several methods to transplant the compound chaotic image encryption scheme with permutation based on 3d baker into image formats as joint photographic experts group ( jpeg ) and graphics interchange format ( gif ). the new method averts the lossy discrete cosine transform and quantization and can en... | arxiv:1208.0999 |
we present the broad - band 0. 6 - 150 kev suzaku and swift bat spectra of the low luminosity seyfert galaxy, ngc 7213. the time - averaged continuum emission is well fitted by a single powerlaw of photon index gamma = 1. 75 and from consideration of the fermi flux limit we constrain the high energy cutoff to be 350 ke... | arxiv:1006.1318 |
the galactic source g2. 4 $ + $ 1. 4 is an optical and radio nebula containing an extreme wolf - - rayet star. at one time this source was regarded as a supernova remnant, because of its apparent non - thermal radio spectrum, although this was based on limited observations. subsequent observations instead supported a f... | arxiv:2208.08694 |
large vision language models ( lvlms ) often suffer from object hallucination, producing objects not present in the given images. while current benchmarks for object hallucination primarily concentrate on the presence of a single object class rather than individual entities, this work systematically investigates multi ... | arxiv:2407.06192 |
the current - driven domain wall motion along two exchange - coupled ferromagnetic layers with perpendicular anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single ferromagnetic layer. our results, where only the lower ferromagnetic layer is subjected to the interf... | arxiv:1801.07432 |
we revisit watermarking techniques based on pre - trained deep networks, in the light of self - supervised approaches. we present a way to embed both marks and binary messages into their latent spaces, leveraging data augmentation at marking time. our method can operate at any resolution and creates watermarks robust t... | arxiv:2112.09581 |
we present an expression for the covariance matrix for the set of state vectors describing a track fitted with a kalman filter. we demonstrate that this expression facilitates the use of a kalman filter track model in a minimum $ \ chi ^ 2 $ algorithm for the alignment of tracking detectors. we also show that it allows... | arxiv:0810.2241 |
starting from a general equation for organism ( or cell system ) growth and attributing additional cell death rate ( besides the natural rate ) to therapy, we derive an equation for cell response to { \ alpha } radiation. different from previous models that are based on statistical theory, the present model connects th... | arxiv:1207.1001 |
the formalism of the linear response for the skyrme energy density functional including tensor terms derived in articles [ 1, 2 ] for nuclear matter is applied here to the case of pure neutron matter. as in article [ 2 ] we present analytical results for the response function in all channels, the landau parameters and ... | arxiv:1207.4006 |
a mirrored bilayer structure incorporating layers of graphene and mos2 is proposed here for surface plasmon resonance ( spr ) biosensing and its performance is evaluated numerically. starting from the basic configuration, the structure with graphene and mos2 layers is gradually developed for enhanced performance. refle... | arxiv:2002.02752 |
blockchains have shown great promise as peer - to - peer digital currency systems over the past 10 years. however, with increased popularity, the demand for processing transactions has also grown leading to increased costs, confirmation times, and limited blockchain utility. there have been a number of proposals on how... | arxiv:1811.00125 |
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