cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Shot noise in ferromagnet--normal metal systems
Creators: name: Tserkovnyak, Yaroslav
name: Brataas, Arne
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A semiclassical theory of the low frequency shot noise in ferromagnet - normal metal systems is formulated. Non-collinear magnetization directions of the ferromagnetic leads, arbitrary junctions and the elastic and inelastic scattering regimes are considered. The shot noise is governed by a set of mesoscopic parameters that are expressed in terms of the microscopic details of the junctions in the circuit. Explicit results in the case of ballistic, tunnel, and diffusive junctions are evaluated. The shot noise, the current and the Fano factor are calculated for a double barrier ferromagnet - normal metal - ferromagnet system. It is demonstrated that the shot noise can have a non-monotonic behavior as a function of the relative angle between the magnetizations of the ferromagnetic reservoirs.
description: 17 pages, 7 figures
Unified description of q-deformed harmonic oscillators
Creators: name: Sogami, Ikuo S.
name: Koizumi, Kouzou
Publisher: name: arXiv
Year: 2001
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: A wide class of q-deformed harmonic oscillators including those of Macfarlane type and of Dubna type is shown to be describable in a unified way. The Hamiltonian of the oscillator is assumed to be given by a q-deformed anti-commutator of the q-deformed ladder operators. By solving $q$-difference equations, explicit coordinate representations of ladder operators and wave functions are derived, and unified parametric representations are found for $q$-Hermite functions and related formulas for the oscillators of Macfarlane and Dubna types. In addition to the well-known solutions with globally periodic structure, there exist an infinite number of solutions with globally aperiodic structure.
description: 17pages, no figures, Latex
Radio pulsar death
Creators: name: Zhang, Bing
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Pulsar radio emission is believed to be originated from the electron-positron pairs streaming out from the polar cap region. Pair formation, an essential condition for pulsar radio emission, is believed to be sustained in active pulsars via one photon process from either the curvature radiation (CR) or the inverse Compton scattering (ICS) seed photons, or sometimes via two photon process. In pulsars with super-critical magnetic fields, some more exotic processes, such as magnetic photon splitting and bound pair formation, will also play noticeable roles. All these effects should be synthesized to discuss radio pulsar death both in the conventional long-period regime due to the turnoff of the active gap, and in the high magnetic field regime due to the possible suppression of the free pair formation. Here I briefly review some recent progress in understanding radio pulsar death.
description: 9 pages, talk presented at Sino-German radio astronomy conference on radio studies of galactic objects, galaxies and AGNs. To appear in a special issue of Chinese Astronomy & Astrophysics (eds: J.L. Han & R. Wielebinski)
Lethality and centrality in protein networks
Creators: name: Jeong, Hawoong
name: Mason, Sean P.
name: Barabasi, Albert-Laszlo
name: Oltvai, Zoltan N.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantitative Biology (q-bio)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In this paper we present the first mathematical analysis of the protein interaction network found in the yeast, S. cerevisiae. We show that, (a) the identified protein network display a characteristic scale-free topology that demonstrate striking similarity to the inherent organization of metabolic networks in particular, and to that of robust and error-tolerant networks in general. (b) the likelihood that deletion of an individual gene product will prove lethal for the yeast cell clearly correlates with the number of interactions the protein has, meaning that highly-connected proteins are more likely to prove essential than proteins with low number of links to other proteins. These results suggest that a scale-free architecture is a generic property of cellular networks attributable to universal self-organizing principles of robust and error-tolerant networks and that will likely to represent a generic topology for protein-protein interactions.
description: See also http:/www.nd.edu/~networks and http:/www.nd.edu/~networks/cell
Analyse bibliométrique de la littérature portant sur  la Co-thématique : Les coopératives et le développement local
Creators: name: ATITAOU ASMAE
name: EL MOUKHTAR MOHAMED
name: BOULKHIR LAYLA
name: TAOUABIT OTHMANE
Publisher: name: Zenodo
Year: 2025

description: Face aux défis économiques et sociaux contemporains, les coopératives émergent comme des acteurs clés du développement local en favorisant l’inclusion économique, la cohésion sociale et la durabilité. Bien que leur contribution soit largement reconnue, la littérature scientifique sur le sujet demeure fragmentée, rendant nécessaire une analyse systématique pour en dégager des tendances et des perspectives claires. Cette étude vise à combler cette lacune en réalisant une revue systématique de la littérature complétée par une analyse bibliométrique des travaux publiés entre 2015 et 2025. À partir de 113 articles en accès libre extraits de bases de données académiques reconnues, cette recherche explore les thématiques dominantes, les concepts clés, ainsi que les réseaux de collaboration scientifique autour des coopératives et du développement local. L’analyse met en lumière les contributions des coopératives dans des domaines variés tels que la création d’emplois, l’autonomisation des communautés, la promotion de l’économie sociale et solidaire, et la résilience face aux crises économiques. Les résultats révèlent des dynamiques de recherche en constante évolution, identifient des lacunes dans la littérature existante et proposent des axes d’investigation pour des recherches futures. En fournissant une cartographie des connaissances actuelles, cette étude contribue à enrichir la réflexion académique et à orienter les politiques publiques en faveur d’un développement local durable porté par les coopératives.
MRCNet: Crowd Counting and Density Map Estimation in Aerial and Ground Imagery
Creators: name: Bahmanyar, Reza
name: Vig, Elenora
name: Reinartz, Peter
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In spite of the many advantages of aerial imagery for crowd monitoring and management at mass events, datasets of aerial images of crowds are still lacking in the field. As a remedy, in this work we introduce a novel crowd dataset, the DLR Aerial Crowd Dataset (DLR-ACD), which is composed of 33 large aerial images acquired from 16 flight campaigns over mass events with 226,291 persons annotated. To the best of our knowledge, DLR-ACD is the first aerial crowd dataset and will be released publicly. To tackle the problem of accurate crowd counting and density map estimation in aerial images of crowds, this work also proposes a new encoder-decoder convolutional neural network, the so-called Multi-Resolution Crowd Network MRCNet. The encoder is based on the VGG-16 network and the decoder is composed of a set of bilinear upsampling and convolutional layers. Using two losses, one at an earlier level and another at the last level of the decoder, MRCNet estimates crowd counts and high-resolution crowd density maps as two different but interrelated tasks. In addition, MRCNet utilizes contextual and detailed local information by combining high- and low-level features through a number of lateral connections inspired by the Feature Pyramid Network (FPN) technique. We evaluated MRCNet on the proposed DLR-ACD dataset as well as on the ShanghaiTech dataset, a CCTV-based crowd counting benchmark. The results demonstrate that MRCNet outperforms the state-of-the-art crowd counting methods in estimating the crowd counts and density maps for both aerial and CCTV-based images.
Dextella brunescens Fibiger, new species
Creators: name: Fibiger, Michael
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Dextella
Dextella brunescens

description: Dorsum brunescens Fibiger, new species
(Plate 14, figures 8; female genit. plate 37, figure 2)
description: Published as part of Fibiger, Michael, 2011, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 4, Taxonomy of the subfamilies Tentaxinae and Micronoctuinae, pp. 1-188 in Zootaxa 2842 (2842) on page 144, DOI: 10.11646/ZOOTAXA.2842.1.1, http://zenodo.org/record/10095402
Structure of pressure-gradient-driven current singularity in ideal magnetohydrodynamic equilibrium
Creators: name: Huang, Yi-Min
name: Zhou, Yao
name: Loizu, Joaquim
name: Hudson, Stuart
name: Bhattacharjee, Amitava
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Singular currents typically appear on rational surfaces in non-axisymmetric ideal magnetohydrodynamic equilibria with a continuum of nested flux surfaces and a continuous rotational transform. These currents have two components: a surface current (Dirac $δ$-function in flux surface labeling) that prevents the formation of magnetic islands and an algebraically divergent Pfirsch--Schlüter current density when a pressure gradient is present across the rational surface. At flux surfaces adjacent to the rational surface, the traditional treatment gives the Pfirsch--Schlüter current density scaling as $J\sim1/Δι$, where $Δι$ is the difference of the rotational transform relative to the rational surface. If the distance $s$ between flux surfaces is proportional to $Δι$, the scaling relation $J\sim1/Δι\sim1/s$ will lead to a paradox that the Pfirsch--Schlüter current is not integrable. In this work, we investigate this issue by considering the pressure-gradient-driven singular current in the Hahm\textendash Kulsrud\textendash Taylor problem, which is a prototype for singular currents arising from resonant magnetic perturbations. We show that not only the Pfirsch--Schlüter current density but also the diamagnetic current density are divergent as $\sim1/Δι$. However, due to the formation of a Dirac $δ$-function current sheet at the rational surface, the neighboring flux surfaces are strongly packed with $s\sim(Δι)^{2}$. Consequently, the singular current density $J\sim1/\sqrt{s}$, making the total current finite, thus resolving the paradox.
description: Minor corrections of typos
Analysis of the dynamical cluster approximation for the Hubbard model
Creators: name: Aryanpour, K.
name: Hettler, M. H.
name: Jarrell, M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We examine a central approximation of the recently introduced Dynamical Cluster Approximation (DCA) by example of the Hubbard model. By both analytical and numerical means we study non-compact and compact contributions to the thermodynamic potential. We show that approximating non-compact diagrams by their cluster analogs results in a larger systematic error as compared to the compact diagrams. Consequently, only the compact contributions should be taken from the cluster, whereas non-compact graphs should be inferred from the appropriate Dyson equation. The distinction between non-compact and compact diagrams persists even in the limit of infinite dimensions. Non-local corrections beyond the DCA exist for the non-compact diagrams, whereas they vanish for compact diagrams.
description: 4 pages, 6 figures. To appear in Phys. Rev. B as a Brief Report
Kac-Moody algebras and Lie algebras of regular vector fields on tori
Creators: name: de Traubenberg, M. Rausch
name: Slupinski, M. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Representation Theory (math.RT)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 17B67, 17B10, 16W25

description: We consider the problem of representing the Kac-Moody algebra $\mathfrak{g}(N)$ specified by an $r\times r$ indecomposable generalised Cartan matrix $N$ as vector fields on the torus ${{\bb C}^*}^r$. It is shown that, if the representations are of a certain form, this is possible if and only if $\mathfrak{g}(N)\cong sl(r+1,{\bb C})$ or $\tilde{sl}(r,{\bb C})$. For $sl(r+1,{\bb C})$ and $\tilde{sl}(r,{\bb C})$, discrete families of representations are constructed. These generalise the well-known discrete families of representations of $sl(2,{\bb C})$ as regular vector fields on ${\bb C}^*$
description: 20 pages, typo corrected in the title
The Impact of Participatory Projects on Social Capital: Evidence from Farmland Consolidation Projects in Japan
Creators: name: Takayama, Taisuke
name: Nakatani, Tomoaki
name: Takayama, Taisuke
name: Nakatani, Tomoaki
Publisher: name: Unknown
Year: 2015
Subjects: subject: Agribusiness
subject: Farm Management
subject: International Development
subject: Farmland Consolidation Projects
subject: Participatory Projects
subject: Social Capital
subject: Impact Evaluation
subject: Japan

description: Farmland fragmentation can lead to low agricultural productivity. In Japan, one solution is Farmland Consolidation Projects (FCPs), participatory public projects that physically merge and reshape several small plots into one large plot. This paper examines the impact of FCPs on community-level social capital by using propensity score matching. We find that FCPs have a positive impact on agriculture-related bonding social capital and a negative impact on non-agriculture-related bridging social capital. Focusing on the constituent elements of bonding social capital, FCPs have a positive effect on the number of community meetings held, non-agriculture-related organizations for women, and management of common-pool resources. On the other hand, focusing on the constituent elements of bridging social capital, FCPs have a negative effect on holding direct sales of agricultural products and rural experience programs for city residents.
Dextella kwaii Fibiger, new species
Creators: name: Fibiger, Michael
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Dextella
Dextella kwaii

description: Dorsum kwaii Fibiger, new species
(Plate 15, figures 1, 2; male genit. plate 30, figure 4; female genit. plate 37, figure 3)
description: Published as part of Fibiger, Michael, 2011, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 4, Taxonomy of the subfamilies Tentaxinae and Micronoctuinae, pp. 1-188 in Zootaxa 2842 (2842) on page 145, DOI: 10.11646/ZOOTAXA.2842.1.1, http://zenodo.org/record/10095402
The Security Reference Architecture for Blockchains: Towards a Standardized Model for Studying Vulnerabilities, Threats, and Defenses
Creators: name: Homoliak, Ivan
name: Venugopalan, Sarad
name: Hum, Qingze
name: Reijsbergen, Daniel
name: Schumi, Richard
name: Szalachowski, Pawel
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Blockchains are distributed systems, in which security is a critical factor for their success. However, despite their increasing popularity and adoption, there is a lack of standardized models that study blockchain-related security threats. To fill this gap, the main focus of our work is to systematize and extend the knowledge about the security and privacy aspects of blockchains and contribute to the standardization of this domain. We propose the security reference architecture (SRA) for blockchains, which adopts a stacked model (similar to the ISO/OSI) describing the nature and hierarchy of various security and privacy aspects. The SRA contains four layers: (1) the network layer, (2) the consensus layer, (3) the replicated state machine layer, and (4) the application layer. At each of these layers, we identify known security threats, their origin, and countermeasures, while we also analyze several cross-layer dependencies. Next, to enable better reasoning about security aspects of blockchains by the practitioners, we propose a blockchain-specific version of the threat-risk assessment standard ISO/IEC 15408 by embedding the stacked model into this standard. Finally, we provide designers of blockchain platforms and applications with a design methodology following the model of SRA and its hierarchy.
Coffee certification and forest quality: A case in Ethiopia
Creators: name: Takahashi, Ryo
name: Todo, Yasuyuki
name: Takahashi, Ryo
name: Todo, Yasuyuki
Publisher: name: Unknown
Year: 2015
Subjects: Crop Production/Industries
International Development
Land Economics/Use

description: Shade coffee certification programs that aim to conserve the forest have attracted an increasing amount of attention. However, there is heated debate whether certification programs create an incentive for producers to expand their coffee-growing areas. This study conducted in Ethiopia aimed to evaluate the impact of a shade coffee certification on forest degradation. Additionally, to provide empirical evidence for the debate, we examined the spillover effects of certification to surrounding forest. We used remote sensing data to identify the forest quality and applied matching methods to compare forest coffee areas with and without the certification. We found that the certified areas significantly conserved forest quality compared with the areas without certification. Furthermore, our empirical results revealed that the certification had a positive impact on the forest areas within a 100 m radius. These results indicate that the certification program is effective in alleviating forest degradation.
REDD policy impacts on the agri-food sector and food security
Creators: name: Tabeau, Andrzej
name: Van Meijl, Hans
name: Overmars, Koen P.
name: Stehfest, Elke
name: Tabeau, Andrzej
name: Van Meijl, Hans
name: Overmars, Koen P.
name: Stehfest, Elke
Publisher: name: Unknown
Year: 2015
Subjects: subject: Environmental Economics and Policy
subject: Food Security and Poverty
subject: REDD
subject: deforestation
subject: land supply
subject: agricultural prices and production
subject: scenarios

description: The REDD policy which preserves, enables substantial emission reductions. Since agricultural production and area expansion is a primary driver of tropical deforestation, REDD policies might limit the expansion possibilities of agricultural land use and therefore influence competitiveness, agricultural prices, trade, production and food security the world. This paper studies the impact of REDD policies on the agri-food sector and food security with a global CGE model called MAGNET. It focuses on the restrictions on agricultural land expansion within the REDD policy package. Simulation results show that REDD policies start to affect the agri-food sector in some lower developed countries if more than 15% of potentially available agricultural areas are protected from deforestation. A stringent REDD policy that protects 90% of land reserves that could potentially be used for agriculture production results in a global real agricultural price increase of almost 6%, and a worldwide agricultural production decrease of 1.5%.
Non-imaging single-pixel sensing with optimized binary modulation
Creators: name: Fu, Hao
name: Bian, Liheng
name: Zhang, Jun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: The conventional high-level sensing techniques require high-fidelity images as input to extract target features, which are produced by either complex imaging hardware or high-complexity reconstruction algorithms. In this letter, we propose single-pixel sensing (SPS) that performs high-level sensing directly from coupled measurements of a single-pixel detector, without the conventional image acquisition and reconstruction process. The technique consists of three steps including binary light modulation that can be physically implemented at $\sim$22kHz, single-pixel coupled detection owning wide working spectrum and high signal-to-noise ratio, and end-to-end deep-learning based sensing that reduces both hardware and software complexity. Besides, the binary modulation is trained and optimized together with the sensing network, which ensures least required measurements and optimal sensing accuracy. The effectiveness of SPS is demonstrated on the classification task of handwritten MNIST dataset, and 96.68% classification accuracy at $\sim$1kHz is achieved. The reported single-pixel sensing technique is a novel framework for highly efficient machine intelligence.
The Flight Spectral Response of the ACIS Instrument
Creators: name: Plucinsky, Paul P.
name: Schulz, Norbert S.
name: Marshall, Herman L.
name: Grant, Catherine E.
name: Chartas, George
name: Sanwal, Divas
name: Teter, Marcus A.
name: Vikhlinin, Alexey A.
name: Edgar, Richard J.
name: Wise, Michael W.
name: Allen, Glenn E.
name: Virani, Shanil N.
name: DePasquale, Joseph M.
name: Raley, Michael T.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the flight calibration of the spectral response of the Advanced CCD Imaging Spectrometer (ACIS) on-board the Chandra X-ray Observatory (CXO). The spectral resolution and sensitivity of the ACIS instrument have both been evolving over the course of the mission. The spectral resolution of the frontside-illuminated (FI) CCDs changed dramatically in the first month of the mission due to radiation damage. Since that time, the spectral resolution of the FI CCDs and the backside-illuminated (BI) CCDs have evolved gradually with time. We demonstrate the efficacy of charge-transfer inefficiency (CTI) correction algorithms which recover some of the lost performance. The detection efficiency of the ACIS instrument has been declining throughout the mission, presumably due to a layer of contamination building up on the filter and/or CCDs. We present a characterization of the energy dependence of the excess absorption and demonstrate software which models the time dependence of the absorption from energies of 0.4 keV and up. The spectral redistribution function and the detection efficiency are well-characterized at energies from 1.5 to 8.0 keV. The calibration at energies below 1.5 keV is challenging because of the lack of strong lines in the calibration source and also because of the inherent non-linear dependence with energy of the CTI and the absorption by the contamination layer. We have been using data from celestial sources with relatively simple spectra to determine the quality of the calibration below 1.5 keV. The analysis of these observations demonstrate that the CTI correction recovers a significant fraction of the spectral resolution of the FI CCDs and the models of the time-dependent absorption result in consistent measurements of the flux at low energies for data from a BI (S3) CCD.
description: 12 pages, 15 figures, SPIE style file, To appear in "Astronomical Telescopes and Instrumentation 2002" (SPIE Conference Proceedings), eds. J.E. Truemper and H.D. Tananbaum
Chiral magnetic effect at finite temperature in a field-theoretic approach
Creators: name: Beneventano, C. G.
name: Nieto, M.
name: Santangelo, E. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the existence (or lack thereof) of the chiral magnetic effect in the framework of finite temperature field theory, studied through the path integral approach and regularized via the zeta function technique. We show that, independently of the temperature, gauge invariance implies the absence of the effect, a fact proved, at zero temperature and in a Hamiltonian approach, by N. Yamamoto. Indeed, the effect only appears when the manifold is finite in the direction of the magnetic field and gauge-invariance breaking boundary conditions are imposed. We present an explicit calculation for antiperiodic and periodic boundary conditions, which do allow for a CME, since only large gauge transformations are, then, an invariance of the theory. In both cases, the associated current does depend on the temperature, a well as on the size of the sample in the direction of the magnetic field, even for a temperature-independent chiral chemical potential. In particular, for antiperiodic boundary conditions, the value of this current only agrees with the result usually quoted in the literature on the subject in the zero-temperature limit, while it decreases with the temperature in a well-determined way.
description: 10 pages, 2 figures. Final version to appear in J. Phys. A: Math. Theor
Anisotropic flow in 4.2A GeV/c C+Ta collisions
Creators: name: Simic, Lj.
name: Milosevic, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Anisotropic flow of protons and negative pions in 4.2A GeV/c C+Ta collisions is studied using the Fourier analysis of azimuthal distributions. The protons exhibit pronounced directed flow. Directed flow of pions is positive in the entire rapidity interval and indicates that the pions are preferentially emitted in the reaction plane from the target to the projectile. The elliptic flow of protons and negative pions is close to zero. Comparison with the quark-gluon-string model (QGSM) and relativistic transport model (ART 1.0) show that they both yield a flow signature similar to the experimental data.
description: 4 pages, 3 figures, Accepted for publication in Phys. Rev. C
Aging properties of an anomalously diffusing particle
Creators: name: Pottier, Noelle
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We report new results about the two-time dynamics of an anomalously diffusing classical particle, as described by the generalized Langevin equation with a frequency-dependent noise and the associated friction. The noise is defined by its spectral density proportional to $ω^{δ-1}$ at low frequencies, with $0
description: 15 pages
Random site percolation on honeycomb lattices with complex neighborhoods
Creators: name: Malarz, Krzysztof
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a rough estimation -- up to four significant digits, based on the scaling hypothesis and the probability of belonging to the largest cluster vs. the occupation probability -- of the critical occupation probabilities for the random site percolation problem on a honeycomb lattice with complex neighborhoods containing sites up to the fifth coordination zone. There are 31 such neighborhoods with their radius ranging from one to three and containing from three to 24 sites. For two-dimensional regular lattices with compact extended-range neighborhoods, in the limit of the large number $z$ of sites in the neighborhoods, the site percolation thresholds $p_c$ follow the dependency $p_c\propto 1/z$, as recently shown by Xun, Hao and Ziff [Physical Review E 105, 024105 (2022)]. On the contrary, noncompact neighborhoods (with holes) destroy this dependence due to the degeneracy of the percolation threshold (several values of $p_c$ corresponding to the same number $z$ of sites in the neighborhoods). An example of a single-value index $ζ=\sum_i z_i r_i$ -- where $z_i$ and $r_i$ are the number of sites and radius of the $i$-th coordination zone, respectively -- characterizing the neighborhood and allowing avoiding the above-mentioned degeneracy is presented. The percolation threshold obtained follows the inverse square root dependence $p_c\propto 1/\sqrtζ$. The functions boundaries() (written in C) for basic neighborhoods (for the unique coordination zone) for the Newman and Ziff algorithm [Physical Review E 64, 016706 (2001)] are also presented.
description: 11 pages, 4 figures, 1 table & three appendices with 2 extra figures and 5 procedures written in C
Federated Learning over Wireless Networks: Convergence Analysis and Resource Allocation
Creators: name: Dinh, Canh T.
name: Tran, Nguyen H.
name: Nguyen, Minh N. H.
name: Hong, Choong Seon
name: Bao, Wei
name: Zomaya, Albert Y.
name: Gramoli, Vincent
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Networking and Internet Architecture (cs.NI)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: There is an increasing interest in a fast-growing machine learning technique called Federated Learning, in which the model training is distributed over mobile user equipments (UEs), exploiting UEs' local computation and training data. Despite its advantages in data privacy-preserving, Federated Learning (FL) still has challenges in heterogeneity across UEs' data and physical resources. We first propose a FL algorithm which can handle the heterogeneous UEs' data challenge without further assumptions except strongly convex and smooth loss functions. We provide the convergence rate characterizing the trade-off between local computation rounds of UE to update its local model and global communication rounds to update the FL global model. We then employ the proposed FL algorithm in wireless networks as a resource allocation optimization problem that captures the trade-off between the FL convergence wall clock time and energy consumption of UEs with heterogeneous computing and power resources. Even though the wireless resource allocation problem of FL is non-convex, we exploit this problem's structure to decompose it into three sub-problems and analyze their closed-form solutions as well as insights to problem design. Finally, we illustrate the theoretical analysis for the new algorithm with Tensorflow experiments and extensive numerical results for the wireless resource allocation sub-problems. The experiment results not only verify the theoretical convergence but also show that our proposed algorithm outperforms the vanilla FedAvg algorithm in terms of convergence rate and testing accuracy.
Connected algebraic groups acting on three-dimensional Mori fibrations
Creators: name: Blanc, Jérémy
name: Fanelli, Andrea
name: Terpereau, Ronan
Publisher: name: arXiv
Year: 2019
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14E07 14E30 14L30 14M20

description: We study the connected algebraic groups acting on Mori fibrations $X \to Y$ with $X$ a rational threefold and $\mathrm{dim}(Y) \geq 1$. More precisely, for these fibre spaces we consider the neutral component of their automorphism groups and study their equivariant birational geometry. This is done using, inter alia, minimal model program and Sarkisov program and allows us to determine the maximal connected algebraic subgroups of $\mathrm{Bir}(\mathbb{P}^3)$, recovering most of the classification results of Hiroshi Umemura in the complex case.
description: 85 pages, final version
The Intrinsic Quantum Excitations of Low Temperature Glasses
Creators: name: Lubchenko, Vassiliy
name: Wolynes, Peter G.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Several puzzling regularities concerning the low temperature excitations of glasses are quantitatively explained by quantizing domain wall motions of the random first order glass transition theory. The density of excitations agrees with experiment and scales with the size of a dynamically coherent region at $T_g$, being about 200 molecules. The phonon coupling depends on the Lindemann ratio for vitrification yielding the observed universal relation $l/λ\simeq 150$ between phonon wavelength $λ$ and mean free path $l$. Multilevel behavior is predicted to occur in the temperature range of the thermal conductivity plateau.
description: 4 pages, submitted to PRL
Gap variability upon packing in organic photovoltaics
Creators: name: López-Durán, D.
name: Plésiat, Etienne
name: Krompiec, Michal
name: Artacho, Emilio
Publisher: name: Apollo - University of Cambridge Repository
Year: 2020
Subjects: subject: Research Article
subject: Physical sciences
subject: FOS: Physical sciences
subject: Engineering and technology
subject: FOS: Engineering and technology

description: Funder: Merck; funder-id: http://dx.doi.org/10.13039/100004334
description: The variation of the HOMO-LUMO band gap is explored for varying packing arrangements of the 4mod BT-4TIC donor-acceptor molecule pair, by means of a high-throughput ab-initio random structure search of packing possibilities. 350 arrangements of the dimer have been relaxed from initial random dispositions, using non-local density-functional theory. We find that the electronic band gap varies within 0.3 eV, and that this magnitude, the binding energy, and the geometry are not significantly correlated. A clearly favoured structure is found with a binding energy of 1.75±0.07 eV, with all but three other arrangements displaying values of less than one third of this highest binding one, which involves the aliphatic chain of 4TIC.
RedMaPPer: Evolution and Mass Dependence of the Conditional Luminosity Functions of Red Galaxies in Galaxy Clusters
Creators: name: To, Chun-Hao
name: Reddick, Rachel M.
name: Rozo, Eduardo
name: Rykoff, Eli
name: Wechsler, Risa H.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We characterize the luminosity distribution, halo mass dependence, and redshift evolution of red galaxies in galaxy clusters using the SDSS Data Release 8 RedMaPPer cluster sample. We propose a simple prescription for the relationship between the luminosity of both central and satellite galaxies and the mass of their host halos, and show that this model is well-fit by the data. Using a larger galaxy cluster sample than previously employed in the literature, we find that the luminosities of central galaxies scale as $\langle \log L \rangle \propto A_L \log (M_{200b})$, with $A_L=0.39\pm0.04$, and that the scatter of the central--galaxy luminosity at fixed $M_{200b}$ ( $σ_{\log L|M}$) is $0.23 ^{+0.05}_{-0.04}$ dex, with the error bar including systematics due to miscentering of the cluster finder, photometry, and photometric redshift estimation. Our data prefers a positive correlation between the luminosity of central galaxies and the observed richness of clusters at a fixed halo mass, with an effective correlation coefficient $d_{\rm{eff}}=0.36^{+0.17}_{-0.16}$. The characteristic luminosity of satellites becomes dimmer from $z=0.3$ to $z=0.1$ by $\sim 20\%$ after accounting for passive evolution. We estimate the fraction of galaxy clusters where the brightest galaxy is not the central to be $P_{\rm{BNC}} \sim 20\%$. We discuss implications of these findings in the context of galaxy evolution and the galaxy--halo connection.
description: 29 pages, 17 figures, 5 tables. Accepted by APJ
HAZM NAYI  KIMYOVIY KUYISHLARIDA TURLI DAVRLARDA BUYRAKLARDAGI MORFOMETRIK O`ZGARISHLARNING QIYOSIY TAVSIFI
Creators: name: Muxammadiyeva, F.R.
Publisher: name: Zenodo
Year: 2024

description: So'nggi o'n yilliklarda Rossiya va G'arbiy Evropa mamlakatlarida har 1000 bolaga 2-3 ta zaharlanish holatlari qayd etiladi va bolalar kimyoviy zaharlanishdan o'lim holatlari soni bo'yicha jarohatlar, kuyishlar, cho'kishlar soni bo'yicha 4-o'rinni egallaydi va umumiy ko'rsatkichdan oshadi. bolalar infektsiyalaridan o'lganlar soni  Bolalarni kasalxonaga yotqizish holatlarining taxminan 3 foizi turli xil kimyoviy moddalar va dorilar bilan zaharlanish bilan bog'liq
Delocalized Quasiparticles in the Vortex State of an Overdoped High-Tc Superconductor Probed by 63Cu NMR
Creators: name: Zheng, G. -q.
name: Ozaki, H.
name: Kitaoka, Y.
name: Kuhns, P.
name: Reyes, A. P.
name: Moulton, W. G.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the spin Knight shift (K_s) and the nuclear spin-lattice relaxation rate (1/T_1) in the vortex state as a function of magnetic field (H) up to 28 T in the high-T_c superconductor TlSr_{2}CaCu_2O_{6.8} (T_c=68 K). At low temperatures well below T_{c}, both K_s and 1/T_1 measured around the middle point between two nearest vortices (saddle point) increase substantially with increasing field, which indicate that the quasiparticle states with an ungapped spectrum are extended outside the vortex cores in a d-wave superconductor. The density of states (DOS) around the saddle point is found to be κN_0\sqrt{H/H_{c2}}, with κ=0.5\sim0.7 and N_0 being the normal-state DOS.
description: 4 pages, 5 figures, to appear in Phys. Rev. Lett
New Mathematical Models of GPS Intersatellite Communications in the Gravitational Field of the Near-Earth Space
Creators: name: Dimitrov, Bogdan G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Several space missions such as GRACE, GRAIL, ACES and others rely on intersatellite communications (ISC) between two satellites at a large distance one from another. The main goal of the theory is to formulate all the navigation observables within the General Relativity Theory (GRT). The same approach should be applied also to the intersatellite GPS-communications (in perspective also between the GPS, GLONASS and Galileo satellite constellations). In this paper a theoretical approach has been developed for ISC between two satellites moving on (one-plane) elliptical orbits based on the introduction of two gravity null cones with origins at the emitting-signal and receiving-signal satellites. The two null cones account for the variable distance between the satellites during their uncorrelated motion. This intersection of the two null cones gives the space-time interval in GRT. Applying some theorems from higher algebra, it was proved that this space-time distance can become zero, consequently it can be also negative and positive. But in order to represent the geodesic distance travelled by the signal, the space-time interval has to be "compatible" with the Euclidean distance. So this "compatibility condition", conditionally called "condition for ISC", is the most important consequence of the theory. The other important consequence is that the geodesic distance turns out to be the space-time interval, but with account also of the "condition for ISC". The geodesic distance is proved to be greater than the Euclidean distance - a result, entirely based on the "two null cones approach" and moreover, without any use of the Shapiro delay formulae. Application of the same higher algebra theorems shows that the geodesic distance cannot have any zeroes, in accord with being greater than the Euclidean distance.
description: 8 pages, no figures, published in the AIP Conf. Proc. of the 10th Jubilee International Conference of the Balkan Physical Union, August 2018, Sofia, Bulgaria
The Truth of Dharma and the Dharma of Truth: Reflections on Hinduism as a Dharmic Faith
Creators: name: Lipner, Julius
Publisher: name: Apollo - University of Cambridge Repository
Year: 2019
Subjects: Article
Hindu dharma
satyam/truth
anṛtam/non-truth/falsehood
lokasaṅgraha
ethical contextualism versus absolutism
Hinduism and modernity

description: Abstract: This article discusses what it might mean to characterize traditional Hinduism as a dharmic faith in relation to the concepts of truth (satyam) and its opposite (anṛtam), without however expatiating on supposed contrasts between Hinduism and the “Abrahamic” faiths. The argument is conducted by recognizing two senses to anṛtam, namely, “non-truth” and “falsehood,” in contrast to satyam; and the method used is inductive in that a historically well-known episode of the Mahābhārata—the story of Kauśika and the bandits—and its authoritative interpretation by the deity Kṛṣṇa in terms of satyam and anṛtam (in the Karṇaparvan, Book 8, of the text) are analyzed heuristically to indicate how dharma is viewed in the tradition qua ethical concept. The conclusion is drawn that Hindu dharma is understood as that whose objective is ultimately to bring about the welfare of the world (lokasaṅgraha). In relation to truth (and its opposite), materially, dharma is invariably contextual in connotation (in contrast to what might be a Kantian or absolutist reading of moral imperatives), whereas formally, at the hands of one commentator or other, not least in modern times, dharma is that which defines what it means to be Hindu. The material and formal connotations of dharma thus analyzed and taken together set Hinduism apart qua dharmic faith.
Additional file 1: of Erratum to: Benefits of applying a proxy eligibility period when using electronic health records for outcomes research: a simulation study
Creators: name: Tzy-Chyi Yu
name: Huanxue Zhou
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer

description: Table S1. Table of the ICD-9 CM codes for comorbidities of interest.
Quantum linear network coding for entanglement distribution in restricted architectures
Creators: name: de Beaudrap, Niel
name: Herbert, Steven
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper we propose a technique for distributing entanglement in architectures in which interactions between pairs of qubits are constrained to a fixed network $G$. This allows for two-qubit operations to be performed between qubits which are remote from each other in $G$, through gate teleportation. We demonstrate how adapting \emph{quantum linear network coding} to this problem of entanglement distribution in a network of qubits can be used to solve the problem of distributing Bell states and GHZ states in parallel, when bottlenecks in $G$ would otherwise force such entangled states to be distributed sequentially. In particular, we show that by reduction to classical network coding protocols for the $k$-pairs problem or multiple multicast problem in a fixed network $G$, one can distribute entanglement between the transmitters and receivers with a Clifford circuit whose quantum depth is some (typically small and easily computed) constant, which does not depend on the size of $G$, however remote the transmitters and receivers are, or the number of transmitters and receivers. These results also generalise straightforwardly to qudits of any prime dimension. We demonstrate our results using a specialised formalism, distinct from and more efficient than the stabiliser formalism, which is likely to be helpful to reason about and prototype such quantum linear network coding circuits.
description: V3: Accepted by Quantum (re-formatted accordingly)
Scientometric Rules as a Guide to Transform Science Systems in the Middle East & North Africa
Creators: name: El-Ouahi, Jamal
Publisher: name: arXiv
Year: 2023
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: This study explores how scientometric data and indicators are used to transform science systems in a selection of countries in the Middle East and North Africa. I propose that scientometric-based rules inform such transformation. First, the research shows how research managers adopt scientometrics as 'global standards'. I also show how several scientometric data and indicators are adopted following a 'glocalization' process. Finally, I demonstrate how research managers use this data to inform decision-making and policymaking processes. This study contributes to a broader understanding of the usage of scientometric indicators in the context of assessing research institutions and researchers based on their publishing activities. Related to these assessments, I also discuss how such data transforms and adapts local science systems to meet so-called 'global standards'.
description: 20 pages
Dextella teraii Fibiger, new species
Creators: name: Fibiger, Michael
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Erebidae
Dextella
Dextella teraii

description: Dorsum teraii Fibiger, new species
(Plate 15, figure 3; female genit. plate 37, figure 4)
description: Published as part of Fibiger, Michael, 2011, Revision of the Micronoctuidae (Lepidoptera: Noctuoidea). Part 4, Taxonomy of the subfamilies Tentaxinae and Micronoctuinae, pp. 1-188 in Zootaxa 2842 (2842) on page 146, DOI: 10.11646/ZOOTAXA.2842.1.1, http://zenodo.org/record/10095402
Computing Homotopy Types Using Crossed N-Cubes of Groups
Creators: name: Brown, Ronald
Publisher: name: arXiv
Year: 2001
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55P15, 55R35, 20L05

description: The aim of this paper is to explain how, through the work of a number of people, some algebraic structures related to groupoids have yielded algebraic descriptions of homotopy n-types. Further, these descriptions are explicit, and in some cases completely computable, in a way not possible with the traditional Postnikov systems, or with other models, such as simplicial groups.
description: 27 pages, uses xypic This paper is an edited version in LaTeX of the paper of the same title which appeared in the Adams Memorial Symposium on Algebraic Topology}, Vol 1, edited N. Ray and G Walker, Cambridge University Press, 1992, 187-210 version 2, August 13,2006: a number of minor corrections and improvements to the references