cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Defensive Reconfigurable Intelligent Surface (D-RIS) Based on Non-Reciprocal Channel Links
Creators: name: Chen-Hu, Kun
name: Popovski, Petar
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A reconfigurable intelligent surface (RIS) is commonly made of low-cost passive and reflective meta-materials with excellent beam steering capabilities. It is applied to enhance wireless communication systems as a customizable signal reflector. However, RIS can also be adversely employed to disrupt the existing communication systems by introducing new types of vulnerability to the physical layer. We consider the \emph{RIS-In-The-Middle (RITM) attack}, in which an adversary uses RIS to jeopardize the direct channel between two transceivers by providing an alternative one with higher signal quality. This adversary can eavesdrop on all exchanged data by the legitimate users, but also perform a false data injection to the receiver. This work devises anti-attack techniques based on a non-reciprocal channel produced by a defensive RIS (D-RIS). The proposed precoding and combining methods and the channel estimation procedure for a non-reciprocal link are effective against potential adversaries while keeping the existing advantages of the RIS. We analyse the robustness of the system against attacks in terms of achievable secrecy rate and probability of detecting fake data. We believe that this defensive role of RIS can be a basis for new protocols and algorithms in the area.
description: 14 pages, journal paper
title: Passive RF Localization Based on RSSI Using Non-linear Bayesian Estimation
Creators: name: Palvai, Anoop Kumar
Publisher: name: George Mason University
Year: 2009
Subjects: subject: Localization
subject: Particle Filter
subject: RSSI
subject: Extended Kalman Filter
subject: Non-Liner Bayesian Estimation
subject: Sequential Importance Sampling

description: RF localization has gained prominence because of its potential for supporting various position based applications. Passive RF Localization based on Received Signal Strength Indicator (RSSI) uses the strength of received signal from a target by passive listening to infer the range, which is subsequently used for position estimation. The thesis undertakes a study of localization techniques and addresses the problem of accuracy of position estimation. State space model developed for localization is nonlinear and hence does not have a closed form solution. Posterior density for state vector has been derived and simulated using a variant of Kalman Filter and Monte Carlo methods to obtain respective sub-optimal solutions. Least Squared Error approach tries to obtain an estimate that minimizes the squared error whereas and does not reveal any statistical information about the target location. Extended Kalman filter approach tries to estimate the posterior density of target employing approximations of Gaussian state probability distribution and linear state space model and observed to provide better results compared to that of Least Squared Error approach. As the localization model is nonlinear, Extended Kalman filter approximates it with a linear one by employing Taylor series approximation and if the nonlinearity is severe the accuracy of the algorithm suffers. Particle filter approach also tries to estimate the state posterior density with no restrictions and hence is applicable for any generalized system. In this approach probability density function is approximated using a weighted set of particles drawn using Monte Carlo methods and will enable in computing the all the moments of distribution. Recursive Least Squared Error, Extended Kalman and Sampling Importance Resampling Particle Filtering algorithms are designed for localization and their performances are compared. The performance of Particle filter using Sampling Importance Resampling algorithm is found to be superior to that of Recursive Least Squared Error approach and Extended Kalman filter.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Soo Ho Sing, Soo York Leong, Fong Yow, [Soo Wuok Hum], Lew Ming, Jung Kwock Song, Jung Ah Suey, Jung Shong Yow, Jung Show Lin, Hung Bark Sin.
Review Helpfulness Scores vs. Review Unhelpfulness Scores: Two Sides of the Same Coin or Different Coins?
Creators: name: Yu, Yinan
name: Gutt, Dominik
name: Khern-am-nuai, Warut
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Evaluating the helpfulness of online reviews supports consumers who must sift through large volumes of online reviews. Online review platforms have increasingly adopted review evaluating systems, which let users evaluate whether reviews are helpful or not; in turn, these evaluations assist review readers and encourage review contributors. Although review helpfulness scores have been studied extensively in the literature, our knowledge regarding their counterpart, review unhelpfulness scores, is lacking. Addressing this gap in the literature is important because researchers and practitioners have assumed that unhelpfulness scores are driven by intrinsic review characteristics and that such scores are associated with low-quality reviews. This study validates this conventional wisdom by examining factors that influence unhelpfulness scores. We find that, unlike review helpfulness scores, unhelpfulness scores are generally not driven by intrinsic review characteristics, as almost none of them are statistically significant predictors of an unhelpfulness score. We also find that users who receive review unhelpfulness votes are more likely to cast unhelpfulness votes for other reviews. Finally, unhelpfulness voters engage much less with the platform than helpfulness voters do. In summary, our findings suggest that review unhelpfulness scores are not driven by intrinsic review characteristics. Therefore, helpfulness and unhelpfulness scores should not be considered as two sides of the same coin.
Normal form in Hecke-Kiselman monoids associated with simple oriented graphs
Creators: name: Aragona, Riccardo
name: D'Andrea, Alessandro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We generalize Kudryavtseva and Mazorchuk's concept of canonical form of elements in Kiselman's semigroups to the setting of a Hecke-Kiselman monoid $\mathbf{HK}_Γ$ associated with a simple oriented graph $Γ$. We use confluence properties to associate with each element in $\mathbf{HK}_Γ$ a normal form; normal forms are not unique, and we show that they can be obtained from each other by a sequence of elementary commutations. We finally describe a general procedure to recover a (unique) lexicographically minimal normal form.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Lee Fook Hing, Lew Choy, Im Yen Hang, [Lee Jack], Yim Sai Foo, Wong Luon, Jone Chun, Chow Gim Yong, Chow Gin, Chee Wah Kok.
Global aspects of moduli spaces of 2d SCFTs
Creators: name: Donagi, Ron
name: Macerato, Mark
name: Sharpe, Eric
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The Bagger-Witten line bundle is a line bundle over moduli spaces of two-dimensional SCFTs, related to the Hodge line bundle of holomorphic top-forms on Calabi-Yau manifolds. It has recently been a subject of a number of conjectures, but concrete examples have proven elusive. In this paper we collect several results on this structure, including a proposal for an intrinsic geometric definition over moduli spaces of Calabi-Yau manifolds and some additional concrete examples. We also conjecture a new criterion for UV completion of four-dimensional supergravity theories in terms of properties of the Bagger-Witten line bundle.
description: 44 pages, LaTeX
Entropy and Compression: A simple proof of an inequality of Khinchin-Ornstein-Shields
Creators: name: Aragona, Riccardo
name: Marzi, Francesca
name: Mignosi, Filippo
name: Spezialetti, Matteo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: 94A15, 94A17

description: This paper concerns the folklore statement that ``entropy is a lower bound for compression''. More precisely we derive from the entropy theorem a simple proof of a pointwise inequality firstly stated by Ornstein and Shields and which is the almost-sure version of an average inequality firstly stated by Khinchin in 1953. We further give an elementary proof of original Khinchin inequality that can be used as an exercise for Information Theory students and we conclude by giving historical and technical notes of such inequality.
description: Compared to version 1, in version 2 we added a simpler proof than the one given by Shields of a more general theorem (Theorem 4, pg. 7) presented by Ornstein and Shields. Consequently we also modified the title of the paper. In version 3 we have reordered the sections of the paper, simplified the proof of Theorem 4 (now Theorem 3) and significantly reduced the proof of Theorem 3 (now Theorem 4)
Ruling out the supersoft high-density symmetry energy from the discovery of PSR J0740+6620 with mass $2.14^{+0.10}_{-0.09}M_\odot$
Creators: name: Zhou, Ying
name: Chen, Lie-Wen
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Using the very recently reported mass $2.14^{+0.10}_{-0.09}M_\odot$ of PSR J0740+6620 together with the data of finite nuclei and the constraints on the equation of state of symmetric nuclear matter at suprasaturation densities from flow data in heavy-ion collisions, we show that the symmetry energy $E_{\rm sym}(n)$ cannot be supersoft so that it becomes negative at suprasaturation densities in neutron stars (NSs) and thus may make the NS have a pure neutron matter core. This is in contrast to the fact that using the mass $2.01 \pm 0.04 M_\odot$ of PSR J0348+0432 as the NS maximum mass cannot rule out the supersoft high-density $E_{\rm sym}(n)$. Furthermore, we find the stiffer high-density $E_{\rm sym}(n)$ based on the existence of $2.14M_\odot$ NSs leads to a strong constraint of $Λ_{1.4} \ge 348^{+88}_{-51}$ for the dimensionless tidal deformability of the canonical $1.4M_\odot$ NS.
description: 8 pages, 2 figures, 1 table. The updated 2.14 solar mass used, results updated and presentation improved. Accepted version to appear in ApJ
title: Globalization and Pressure to Conform: Contesting Labor Law Reform in Egypt
Creators: name: Paczynska, Agnieszka
Publisher: name: School for Conflict Analysis and Resolution
Year: 2004

description: “The economic changes brought on by globalization imply a fundamental restructuring of the relationship between the state and society, a transformation that inherently generates conflicts. Everyone has been affected by these changes, but the costs and benefits of integration into the global economy have not been distributed evenly across all social groups. While some have benefited from the changes, others have found themselves struggling to cope in this new environment. Many students of globalization have noted that as economic integration has progressed, the power of capital vis-a.-vis the state as well as vis-a.-vis organized labor has grown. In particular, as capital has become more mobile and the competition to attract this increasingly mobile capital has increased, the set of policy choices available to national governments has shrunk. As national-level policies have become more capital-friendly, the position of trade unions has declined and workers have been caught in a relentless ‘race to the bottom’ -lower wages, lower social spending, and less worker-friendly labor market regulations. “
On the existence of paradoxical motions of generically rigid graphs on the sphere
Creators: name: Gallet, Matteo
name: Grasegger, Georg
name: Legerský, Jan
name: Schicho, Josef
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: Robotics (cs.RO)
subject: Algebraic Geometry (math.AG)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We interpret realizations of a graph on the sphere up to rotations as elements of a moduli space of curves of genus zero. We focus on those graphs that admit an assignment of edge lengths on the sphere resulting in a flexible object. Our interpretation of realizations allows us to provide a combinatorial characterization of these graphs in terms of the existence of particular colorings of the edges. Moreover, we determine necessary relations for flexibility between the spherical lengths of the edges. We conclude by classifying all possible motions on the sphere of the complete bipartite graph with $3+3$ vertices where no two vertices coincide or are antipodal.
description: 42 pages. This is the accepted version of the manuscript; the final version of this work is https://doi.org/10.1137/19M1289467
Studying the Impact of TensorFlow and PyTorch Bindings on Machine Learning Software Quality
Creators: name: Li, Hao
name: Rajbahadur, Gopi Krishnan
name: Bezemer, Cor-Paul
Publisher: name: arXiv
Year: 2024
Subjects: subject: Software Engineering (cs.SE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Bindings for machine learning frameworks (such as TensorFlow and PyTorch) allow developers to integrate a framework's functionality using a programming language different from the framework's default language (usually Python). In this paper, we study the impact of using TensorFlow and PyTorch bindings in C#, Rust, Python and JavaScript on the software quality in terms of correctness (training and test accuracy) and time cost (training and inference time) when training and performing inference on five widely used deep learning models. Our experiments show that a model can be trained in one binding and used for inference in another binding for the same framework without losing accuracy. Our study is the first to show that using a non-default binding can help improve machine learning software quality from the time cost perspective compared to the default Python binding while still achieving the same level of correctness.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Soo Shee Chun, [Ngan Lum], [Ngan Chee Wah], Yat Leong Big, Dair Kwong Gin, Wong Ming, Chan Fon Cheong, Jew Sen Kow, Chan Luon Ow, Young Jack Fon.
Paper 2.1 – Fundamentos Neurobiológicos y Evolutivos para una Religión Postdogmática
Creators: name: Manu, Manu
Publisher: name: Zenodo
Year: 2025

description: Este paper establece los fundamentos doctrinales de una religión postdogmática diseñada como respuesta evolutiva al sufrimiento estructural global. Basándose en la identidad genética común de la especie Homo sapiens, la empatía funcional entrenable y el humor como catalizador social, el texto propone una reorganización simbólica que sustituya las estructuras ideológicas fragmentarias por marcos de cooperación verificables. 

A través de una perspectiva neurobiológica y evolutiva, el documento define el mal estructural como un fenómeno observable y solucionable, y ofrece un conjunto de principios organizativos capaces de transformar los marcos simbólicos de gobernanza, cultura y acción colectiva. Esta obra no parte de la fe ni del dogma, sino de la evidencia científica, la utilidad adaptativa y la conciencia empática. 

El documento forma parte de la serie doctrinal oficial de la Iglesia del Homo Sapiens, y constituye el Paper 2.1 dentro de su colección fundacional.
Collaboration Activities between EGI and WLCG
Creators: name: Litmaath, Maarten
name: Viljoen, Matthew
Publisher: name: Zenodo
Year: 2021
Subjects: EGI
EOSC
WLCG
distributed computing
grid computing

description: The purpose of this document is to outline the areas where the European Grid Infrastructure (EGI) Federation and the Worldwide LHC Computing Grid (WLCG) project are actively collaborating and have been doing so over a period of 10 years, as well as common areas where new opportunities may arise for further collaboration in the changing IT landscape.
Tight Quantum Depth Lower Bound for Solving Systems of Linear Equations
Creators: name: Wang, Qisheng
name: Zhang, Zhicheng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Since Harrow, Hassidim, and Lloyd (2009) showed that a system of linear equations with $N$ variables and condition number $κ$ can be solved on a quantum computer in $\operatorname{poly}(\log(N), κ)$ time, exponentially faster than any classical algorithms, its improvements and applications have been extensively investigated. The state-of-the-art quantum algorithm for this problem is due to Costa, An, Sanders, Su, Babbush, and Berry (2022), with optimal query complexity $Θ(κ)$. An important question left is whether parallelism can bring further optimization. In this paper, we study the limitation of parallel quantum computing on this problem. We show that any quantum algorithm for solving systems of linear equations with time complexity $\operatorname{poly}(\log(N), κ)$ has a lower bound of $Ω(κ)$ on the depth of queries, which is tight up to a constant factor.
description: Minor corrections to references in [v1]. 22 pages, 1 table. Close to the official version
Supplementary document for Optical second-order Skyrmionic Hopfion - 6400085.pdf
Creators: name: Ehrmanntraut, Daniel
name: Droop, Ramon
name: Sugic, Danica
name: Otte, Eileen
name: Dennis, Mark
name: Denz, Cornelia
Publisher: name: Optica Publishing Group
Year: 2025
Subjects: Uncategorized

description: Additional visualisation and energy flow
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Mr. Loe Ying, Soo Hong Shee, Leong Shee, Jung Kwong Chew, Mrs. Law Chan Shee, Law Suey Kuey, Law Suey Hing, Law Suey Dang Law Shew Kind, Hew Ying Yow, Mr. Jung Sik Pon, Mrs. S.M. Chu, Miss Lily Chu, Mr Wan Gong,
A Public Health Approach to Modern Slavery – Opportunities and Challenges
Creators: name: Such, Elizabeth
name: Oram, Sian
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 420699
subject: Public health not elsewhere classified

description: A public health approach to modern slavery is emerging as a potential alternative to the criminal-justice based responses that have dominated attempts to address modern slavery to date. In November 2020, and as part of the 2020 Economic and Social Research Council (ESRC) Festival of Social Sciences, King’s College London and the Office of the Independent Anti-Slavery Commissioner hosted an event to discuss the opportunities and challenges afford by a public health approach to modern slavery.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Chung Jang, Wong Gay Yow, Wong Jung Bill, Leong Hong Ben, Lee King Fong, Lee Jing Loy, Yee Sam, Wong Wan Shue, [Huey Mow].
Seeing the Unseen - Progress towards all-sky visible reflectances monitoring and assimilation at ECMWF
Creators: name: Necker, Tobias
name: Lupu, Cristina
name: Benedetti, Angela
name: Quesada-Ruiz, Samuel
Publisher: name: Zenodo
Year: 2025

description: Satellite observations are critical for numerical weather prediction (NWP), yet the full potential of visible spectral data remains to be explored. In recent years, ECMWF has been advancing efforts to incorporate visible satellite observations to enhance the analysis and forecasts of clouds and aerosols in the Integrated Forecasting System (IFS). We discuss results from the CLOVIS-2 and CERTAINTY projects, presenting visible reflectance (655 nm) monitoring and assimilation experiments using observations from GEOS satellites and the Ocean and Land Color Instrument (OLCI) onboard ESA’s Sentinel 3A and 3B satellite missions. Our study assesses the first-ever successful experimental assimilation of visible all-sky satellite observations in the IFS using model CY49R1, which became operational in November 2024. A comprehensive evaluation of these experiments demonstrates that visible reflectance assimilation can improve the model analysis of clouds by better fitting the model trajectory to observations in reflectance space. We will also discuss the remaining challenges related to the future operational assimilation of visible observations, including observation operator refinements, observation error modelling, and the role of model errors and biases. Our findings underscore the vast potential of visible spectral data for operational NWP and future re-analysis products.
Simplicial Dollar Game
Creators: name: Kim, Jesse
name: Perkinson, David
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05345

description: The dollar game is a chip-firing game introduced by Baker and Norine (2007) as a context in which to formulate and prove the Riemann-Roch theorem for graphs. A divisor on a graph is a formal integer sum of vertices. Each determines a dollar game, the goal of which is to transform the given divisor into one that is effective (nonnegative) using chip-firing moves. We use Duval, Klivans, and Martin's theory of chip-firing on simplicial complexes to generalize the dollar game and results related to the Riemann-Roch theorem for graphs to higher dimensions. In particular, we extend the notion of the degree of a divisor on a graph to a (multi)degree of a chain on a simplicial complex and use it to establish two main results. The first of these is Theorem 18, generalizing the fact that if a divisor on a graph has large enough degree (at least as large as the genus of the graph), it is winnable; and the second is Corollary 34, generalizing the fact that trees (graphs of genus 0) are exactly the graphs on which every divisor of degree 0, interpreted as an instance of the dollar game, is winnable.
description: 22 pages; version 2 fixes a typo in Theorem 18; version 3 makes minor revisions
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Chan Chuck Ning, Ng Jung Fong, Wong Sair Yuen, Ka Bong, Lew Yow, Lew Song, Lew Lett Jai, Seto Guey, Jang Suey Poy, Hew Fong Sang.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Lim Kong, Wong Gim Soon, Chow Chee Wing, Chow Luon Hong, Sim Wo Guey, Lew Lai Choy, Chow See Fon, Wong Hon, Wong Loy Yick, Chin Jack.
Diamond Mirrors for High-Power Lasers
Creators: name: Atikian, H.
name: Sinclair, N.
name: Latawiec, P.
name: Xiong, X.
name: Meesala, S.
name: Gauthier, S.
name: Wintz, D.
name: Randi, J.
name: Bernot, D.
name: DeFrances, S.
name: Thomas, J.
name: Roman, M.
name: Durrant, S.
name: Capasso, F.
name: Loncar, M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: High-power lasers have numerous scientific and industrial applications. Some key areas include laser cutting and welding in manufacturing, directed energy in fusion reactors or defense applications, laser surgery in medicine, and advanced photolithography in the semiconductor industry. These applications require optical components, in particular mirrors, that withstand high optical powers for directing light from the laser to the target. Ordinarily, mirrors are comprised of multilayer coatings of different refractive index and thickness. At high powers, imperfections in these layers lead to absorption of light, resulting in thermal stress and permanent damage to the mirror. Here we design, simulate, fabricate, and demonstrate monolithic and highly reflective dielectric mirrors which operate under high laser powers without damage. The mirrors are realized by etching nanostructures into the surface of single-crystal diamond, a material with exceptional optical and thermal properties. We measure reflectivities of greater than 98% and demonstrate damage-free operation using 10 kW of continuous-wave laser light at 1070 nm, with intensities up to 4.6 MW/cm2. In contrast, at these laser powers, we observe damage to a standard dielectric mirror based on optical coatings. Our results initiate a new category of broadband optics that operate in extreme conditions.
title: Natural Language Processing Approach for Recommender Systems
Creators: name: Tadepalli, Sowndarya Lahari
Publisher: name: George Mason University
Year: 2021
Subjects: subject: Machine learning
subject: Natural Language Processing
subject: NLP

description: Playlists have become a significant part of our music listening experience today. There are over three billion of these on Spotify alone. Along these lines, it is basic for a recommender structure to have the limit perceive the sort of customer and go about as necessities be. The goal was to improve idea exactness by including more solid data from various songs. For this reason, tunes from comparable assortment and comparable specialists were broke down to discover the connection and was named as "assortment impact". Lately, nevertheless, ask about on recommenders using communitarian isolating has gotten a more noteworthy conspicuousness in the music space. The principal music recommender system using local area arranged. It used a constrained individual association for registering closeness impact which compares to add up to like substance.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Lam See, Wong Mon, Lam Yow, Chin Yee, Chin Sound, Fong Jung Yow, Leong Yow Him, Leong Gim Yow, Lee Ping, Lee Luon.
Optimization of noncollinear magnetic ordering temperature in Y-type hexaferrite by machine learning
Creators: name: Li, Yonghong
name: Zhang, Jing
name: Jiang, Linfeng
name: Zhang, Long
name: Zhang, Yugang
name: Wu, Xueliang
name: Chai, Yisheng
name: Zhou, Xiaoyuan
name: Zhou, Zizhen
Publisher: name: arXiv
Year: 2024
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Searching the optimal doping compositions of the Y-type hexaferrite Ba2Mg2Fe12O22 remains a long-standing challenge for enhanced non-collinear magnetic transition temperature (TNC). Instead of the conventional trial-and-error approach, the composition-property descriptor is established via a data driven machine learning method named SISSO (sure independence screening and sparsifying operator). Based on the chosen efficient and physically interpretable descriptor, a series of Y-type hexaferrite compositions are predicted to hold high TNC, among which the BaSrMg0.28Co1.72Fe10Al2O22 is then experimentally validated. Test results indicate that, under appropriate external magnetic field conditions, the TNC of this composition reaches up to reaches up to 568 K, and its magnetic transition temperature is also elevated to 735 K. This work offers a machine learning-based route to develop room temperature single phase multiferroics for device applications.
description: accepted by Applied Physics Letters in 2024
Impartial Selection with Additive Approximation Guarantees
Creators: name: Caragiannis, Ioannis
name: Christodoulou, George
name: Protopapas, Nicos
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: FOS: Computer and information sciences

description: Impartial selection has recently received much attention within the multi-agent systems community. The task is, given a directed graph representing nominations to the members of a community by other members, to select the member with the highest number of nominations. This seemingly trivial goal becomes challenging when there is an additional impartiality constraint, requiring that no single member can influence her chance of being selected. Recent progress has identified impartial selection rules with optimal approximation ratios. Moreover, it was noted that worst-case instances are graphs with few vertices. Motivated by this fact, we propose the study of additive approximation, the difference between the highest number of nominations and the number of nominations of the selected member, as an alternative measure of the quality of impartial selection. Our positive results include two randomized impartial selection mechanisms which have additive approximation guarantees of $Θ(\sqrt{n})$ and $Θ(n^{2/3}\ln^{1/3}n)$ for the two most studied models in the literature, where $n$ denotes the community size. We complement our positive results by providing negative results for various cases. First, we provide a characterization for the interesting class of strong sample mechanisms, which allows us to obtain lower bounds of $n-2$, and of $Ω(\sqrt{n})$ for their deterministic and randomized variants respectively. Finally, we present a general lower bound of $2$ for all deterministic impartial mechanisms.
description: 18 pages, 7 figures. A preliminary version appeared in SAGT '19. Corrected a minor bug in Theorem 3 and typos. Theory Comput Syst (2022)
ACCUMULATION OF HEAVY METALS IN TYPICAL IRRIGATED GRAY SOIL LAYERS OF THE TASHKENT REGION AND IN THE ORGANS OF FRUIT TREES GROWN ON THESE SOILS
Creators: name: Juraev Ohunjon Bakhtiyor oglu1, Karimov Xusniddin Nagimovich2  1Scientific research institute of horticulture, viticulture and winemaking named after academician M.Mirzaev, 100000 Shymkent road street Tashkent district Tashkent region, doctoral student (PhD), oxunjon_jurayev@mail.ru 2Scientific research institute of horticulture, viticulture and winemaking named after academician M.Mirzaev, Doctor of Agricultural Sciences (DSc)
Publisher: name: Zenodo
Year: 2025

description: The article examines the accumulation of heavy metals in typical irrigated gray soils of the Piskent district of the Tashkent region and in the organs of fruit trees grown on these soils. It was found that the organs of fruit trees contain high concentrations of Zn, Pb, Cr, Cd elements.

The content of mobile heavy metals in typical gray soils has the following decreasing order: Zn→Pb→Cu→Cd→Ni→Cr→Co.
Achieving Robustness to Aleatoric Uncertainty with Heteroscedastic Bayesian Optimisation
Creators: name: Griffiths, Ryan-Rhys
name: Aldrick, Alexander A.
name: Garcia-Ortegon, Miguel
name: Lalchand, Vidhi R.
name: Lee, Alpha A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (stat.ML)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Bayesian optimisation is a sample-efficient search methodology that holds great promise for accelerating drug and materials discovery programs. A frequently-overlooked modelling consideration in Bayesian optimisation strategies however, is the representation of heteroscedastic aleatoric uncertainty. In many practical applications it is desirable to identify inputs with low aleatoric noise, an example of which might be a material composition which consistently displays robust properties in response to a noisy fabrication process. In this paper, we propose a heteroscedastic Bayesian optimisation scheme capable of representing and minimising aleatoric noise across the input space. Our scheme employs a heteroscedastic Gaussian process (GP) surrogate model in conjunction with two straightforward adaptations of existing acquisition functions. First, we extend the augmented expected improvement (AEI) heuristic to the heteroscedastic setting and second, we introduce the aleatoric noise-penalised expected improvement (ANPEI) heuristic. Both methodologies are capable of penalising aleatoric noise in the suggestions and yield improved performance relative to homoscedastic Bayesian optimisation and random sampling on toy problems as well as on two real-world scientific datasets. Code is available at: \url{https://github.com/Ryan-Rhys/Heteroscedastic-BO}
description: Published in Machine Learning: Science and Technology 2021 (https://iopscience.iop.org/article/10.1088/2632-2153/ac298c) Earlier version accepted to the 2019 NeurIPS Workshop on Safety and Robustness in Decision Making
General Markovian Equation for Scalar Fields in a Slowly Evolving Background
Creators: name: Buldgen, Gilles
name: Drewes, Marco
name: Kang, Jin U
name: Mun, Ui Ri
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present a general and model-independent method to obtain an effective Markovian quantum kinetic equation for the expectation value of a slowly evolving scalar field in an adiabatically evolving background from first principles of nonequilibrium quantum field theory. The method requires almost no assumptions about the field's interactions and the composition of the background, except that 1) the coupling constants shall be small enough for perturbation theory to be applicable, 2) there is a clear separation between microphysical time scales and the rate at which bulk properties change, and 3) higher time derivatives of the field remain small. The resulting Markovian equation of motion is expressed in terms of an effective potential and friction coefficients. Motivated by cosmological applications we focus on spatially homogeneous and isotropic systems, but the approach could also be applied to spatial gradients.
description: 20 pages, 2 figures; version accepted in JCAP
Some group-theoretical results on Feistel Networks in a long-key scenario
Creators: name: Aragona, Riccardo
name: Calderini, Marco
name: Civino, Roberto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Group Theory (math.GR)
subject: Cryptography and Security (cs.CR)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: Primary: 94A60, 20B05, Secondary: 20B35

description: The study of the trapdoors that can be hidden in a block cipher is and has always been a high-interest topic in symmetric cryptography. In this paper we focus on Feistel-network-like ciphers in a classical long-key scenario and we investigate some conditions which make such a construction immune to the partition-based attack introduced recently by Bannier et al.
description: Accepted for publication in Advances in Mathematics of Communications
A precise local limit theorem for the multinomial distribution and some applications
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 62E20, 62H10, 62H12, 62B15, 62G05, 62G07

description: In Siotani & Fujikoshi (1984), a precise local limit theorem for the multinomial distribution is derived by inverting the Fourier transform, where the error terms are explicit up to order $N^{-1}$. In this paper, we give an alternative (conceptually simpler) proof based on Stirling's formula and a careful handling of Taylor expansions, and we show how the result can be used to approximate multinomial probabilities on most subsets of $\mathbb{R}^d$. Furthermore, we discuss a recent application of the result to obtain asymptotic properties of Bernstein estimators on the simplex, we improve the main result in Carter (2002) on the Le Cam distance bound between multinomial and multivariate normal experiments while simultaneously simplifying the proof, and we mention another potential application related to finely tuned continuity corrections.
description: 21 pages, 0 figure, v4: minor corrections
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: [Jay Chan Woo], Huey Ying, Huey Sik, Huey Jong, Lew Yow, Ngok Jim Foy, Lum Foo, Luey Lett, Luey Lai, Kwan Kai Fon.
Random weighting in LASSO regression
Creators: name: Ng, Tun Lee
name: Newton, Michael A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: 62F12, 62F40, 62F15

description: We establish statistical properties of random-weighting methods in LASSO regression under different regularization parameters $λ_n$ and suitable regularity conditions. The random-weighting methods in view concern repeated optimization of a randomized objective function, motivated by the need for computational approximations to Bayesian posterior sampling. In the context of LASSO regression, we repeatedly assign analyst-drawn random weights to terms in the objective function (including the penalty terms), and optimize to obtain a sample of random-weighting estimators. We show that existing approaches have conditional model selection consistency and conditional asymptotic normality at different growth rates of $λ_n$ as $n \to \infty$. We propose an extension to the available random-weighting methods and establish that the resulting samples attain conditional sparse normality and conditional consistency in a growing-dimension setting. We find that random-weighting has both approximate-Bayesian and sampling-theory interpretations. Finally, we illustrate the proposed methodology via extensive simulation studies and a benchmark data example.
description: Update data presentation
New superconvergent structures developed from the finite volume element method in 1D
Creators: name: Wang, Xiang
name: Lv, Junliang
name: Li, Yonghai
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N12, 65N08, 65N30

description: New superconvergent structures are introduced by the finite volume element method (FVEM), which allow us to choose the superconvergent points freely. The general orthogonal condition and the modified M-decomposition (MMD) technique are established to prove the superconvergence properties of the new structures. In addition, the relationships between the orthogonal condition and the convergence properties for the FVE schemes are carried out in Table 1. Numerical results are given to illustrate the theoretical results.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Mew Hing, Lew Wing Cheong, Lew Mon Jong, Chin Hung Shong, Mah How Yen, Ng Foo, Huie Chong Lai, Seta Fook, Peter Wong Chong, Yee Sim.
Topological Transitions in a Kerr Nonlinear Oscillator
Creators: name: Lin, Juan
name: Yang, Shou-Bang
name: Wu, Fan
name: Yang, Zhen-Biao
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Kerr nonlinear oscillator (KNO) supports a pair of steady eigenstates, coherent states with opposite phases, that are good for the encoding of continuous variable qubit basis states. Arbitrary control of the KNO confined within the steady state subspace allows extraction of the Berry curvature through the linear response of the physical observable to the quench velocity of the system, providing an effective method for the characterization of topology in the KNO. As an alternative, the control adopting the "shortcut to adiabaticity" to the KNO enables the exploration of the topology through accelerated adiabatic eigenstate evolution to measure all three physical observables. Topological transitions are revealed by the jump of the first Chern number, obtained respectively from the integral of the Berry curvature and of the new polar angle relation, over the whole parameter space. Our strategy paves the way for measuring topological transitions in continuous variable systems.
description: 13 pages, 4 figures
Asymptotic properties of Bernstein estimators on the simplex
Creators: name: Ouimet, Frédéric
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistics Theory (math.ST)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 62G05, 62G07, 62G20, 60F05

description: Bernstein estimators are well-known to avoid the boundary bias problem of traditional kernel estimators. The theoretical properties of these estimators have been studied extensively on compact intervals and hypercubes, but never on the simplex, except for the mean squared error of the density estimator in Tenbusch (1994) when $d = 2$. The simplex is an important case as it is the natural domain of compositional data. In this paper, we make an effort to prove several asymptotic results (bias, variance, mean squared error (MSE), mean integrated squared error (MISE), asymptotic normality, uniform strong consistency) for Bernstein estimators of cumulative distribution functions and density functions on the $d$-dimensional simplex. Our results generalize the ones in Leblanc (2012) and Babu et al. (2002), who treated the case $d = 1$, and significantly extend those found in Tenbusch (1994). In particular, our rates of convergence for the MSE and MISE are optimal.
description: 22 pages, 1 figure
Multirate Timestepping for the Incompressible Navier-Stokes Equations in Overlapping Grids
Creators: name: Mittal, Ketan
name: Dutta, Som
name: Fischer, Paul
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We develop a multirate timestepper for semi-implicit solutions of the unsteady incompressible Navier-Stokes equations (INSE) based on a recently-developed multidomain spectral element method (SEM). For {\em incompressible} flows, multirate timestepping (MTS) is particularly challenging because of the tight coupling implied by the incompressibility constraint, which manifests as an elliptic subproblem for the pressure at each timestep. The novelty of our approach stems from the development of a stable overlapping Schwarz method applied directly to the Navier-Stokes equations, rather than to the convective, viscous, and pressure substeps that are at the heart of most INSE solvers. Our MTS approach is based on a predictor-corrector (PC) strategy that preserves the temporal convergence of the underlying semi-implicit timestepper. We present numerical results demonstrating that this approach scales to an arbitrary number of overlapping grids, accurately models complex turbulent flow phenomenon, and improves computational efficiency in comparison to singlerate timestepping-based calculations.
description: 34 pages, 13 figures
TOP SKILLS NEEDED FOR A SUCCESSFUL CAREER IN HOSPITALITY MANAGEMENT
Creators: name: POQUIZ, MARMIE R.
Publisher: name: BINAS PUBLISHING
Year: 2025
Subjects: TOP SKILLS NEEDED FOR A SUCCESSFUL CAREER IN HOSPITALITY MANAGEMENT

description: PACIFICUS: A Literary Magazine by Binas Publishing (Volume 1, Issue 1)

 

PACIFICUS is a literary magazine by Binas Publishing that celebrates the power of words through a diverse collection of poetry, short stories, essays, and creative works. With its inaugural issue, PACIFICUS Volume 1, Issue 1 sets the stage for a platform where writers and artists can share their voices, perspectives, and imagination.

 

This edition features compelling narratives, thought-provoking reflections, and artistic expressions that resonate with readers across different backgrounds. Whether exploring themes of identity, resilience, culture, or the human experience, PACIFICUS embodies the essence of storytelling that inspires and connects.

 

As a publication dedicated to fostering literary excellence, PACIFICUS aims to nurture emerging and established writers while enriching the literary landscape. Each issue aspires to be a testament to creativity, insight, and the enduring impact of literature.
Canadian Pacific Steamships agent's stubs
Creators: name: Yip Sang Company
name: Canadian Pacific Steamships
Publisher: name: The University of British Columbia
Year: 2016

description: Ticket stubs for the following passengers: Ho Jone, Chew Tin You, [Chew But Do], [Chin Gone Moo], Chin Yee Poy, Chin Yee Wing, Chin Gee Hong, [Chin Hawk Wap], [Lew Nang], Fong Suey Jone.
OIKODOMOS: Quality assurance
Creators: name: Riddy, Paul
name: Bramani, Chiara
name: Tardini, Stefano
Publisher: name: Zenodo
Year: 2011
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Architecture
subject: Urban studies
subject: Housing
subject: Environmental sustainability
subject: Education
subject: Learning
subject: Innovation
subject: Educational Technology/education

description: This report summaries assorted data which has been collated during the project and systematically reviews the outputs produced against those proposed The evaluation is designed to answer the question “How close did OIKODOMOS come to achieving its goals?”
Asynchronous measurement-device-independent quantum digital signatures
Creators: name: Bian, Jing-Wei
name: Li, Bing-Hong
name: Xie, Yuan-Mei
name: Yin, Hua-Lei
name: Chen, Zeng-Bing
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum digital signatures (QDSs), which distribute and measure quantum states by key generation protocols and then sign messages via classical data processing, are a key area of interest in quantum cryptography. However, the practical implementation of a QDS network has many challenges, including complex interference technical requirements, linear channel loss of quantum state transmission, and potential side-channel attacks on detectors. Here, we propose an asynchronous measurement-device-independent (MDI) QDS protocol with asynchronous two-photon interference strategy and one-time universal hashing method. The two-photon interference approach protects our protocol against all detector side-channel attacks and relaxes the difficulty of experiment implementation, while the asynchronous strategy effectively reduces the equivalent channel loss to its square root. Compared to previous MDI-QDS schemes, our protocol shows several orders of magnitude performance improvements and doubling of transmission distance when processing multi-bit messages. Our findings present an efficient and practical MDI-QDS scheme, paving the way for large-scale data processing with non-repudiation in quantum networks.
description: 17 pages, 5 figures, accepted by Physical Review A