cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Efficient vectorised Cuda kernels for high-order finite element flow solvers
Creators: name: J. Eichstädt
name: D. Moxey
name: J. Peiró
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: In this work, we develop efficient kernels for elemental operators of matrix-free solvers of the Helmholtz equation, which are the core operations for more complete Navier-Stokes solvers. We consider straight-sided and deformed quadrilateral elements from unstructured high-order meshes. We investigate two types of efficient CUDA kernels for a range of polynomial orders; a first type which maps each elemental operation to a CUDA-thread, and a second that maps each element to a CUDA-block. Our results show that the first option is beneficial for small elements with low polynomial order, whereas the second option is beneficial for larger elements. For both options we show the importance of the right layout of data structures, and analyse the effect of utilising different memory spaces on the GPU.
ОЦЕНКА КОНЦЕНТРАЦИЙ И ПОТОКОВ РТУТИ, ПОСТУПАЮЩИХ ИЗ АТМОСФЕРЫ НА ТЕРРИТОРИЮ ЯМАЛО-НЕНЕЦКОГО АВТОНОМНОГО ОКРУГА
Creators: name: Е.Г. Ильина
name: С.С. Эйрих
name: Л.В. Шоль
Publisher: name: Известия Алтайского отделения Русского географического общества
Year: 2020
Subjects: ртуть
Арктика
атмосферные осадки
средневзвешенные концентрации
потоки осаждения
AMDE
таяние мерзлоты

description: Содержание ртути в атмосферных осадках, выпадающих в черте городов Нады-ма и Салехарда, варьирует в пределах 0,5-63,3 нг/л и 2,7-26,1 нг/л соответственно. Средневзвешенная концентрация ртути в атмосферных осадках холодного периода в г. Салехард в два раза меньше, чем в г. Надым. Средневзвешенная годовая концентрация ртути г. Надым сопоставима с величинами, полученными для других урбанизированных регионов мира, хотя по сравнению с удаленными местами Арктики (Аляска) она значительно выше. Максимальные концентрации ртути в осадках относятся к холодному весеннему периоду, что вероятнее всего, связано с весенним истощением атмосферных концентраций ртути (AMDE). Вклад выпадений в период AMDE в годовое выпадение ртути в 2016-2017 гг. составляет 12,3 %, а в 2017-2018 гг. – 30,4 %. Среднегодовые потоки влажного осаждения ртути для г. Надым (за 3-х летний период наблюдений) существенно ниже ее потоков осаждения в других регионах (США, Европы и Китая), но сопоставим со среднегодовыми потоками для удаленных терри-торий арктической зоны. В холодные периоды года потоки влажного осаждения ртути находятся на близком уровне: 0,64-0,65 мкг/м2, тогда как в теплый период они изменяются существенно: 0,47-1,84 мкг/м2. Резкое повышение поступления ртути, наблюдаемое в теплый период 2018 г., может объясняться ее региональным поступлением при таянии вечной мерзлоты, обусловленном высокими температурами в данный период (2018 г. был вторым по температуре после 1936 г., причем увеличение мощности сезонно-талого слоя в районе Надыма составило 37 см по сравнению с 2017 г.).
Non-parallel Voice Conversion System with WaveNet Vocoder and Collapsed Speech Suppression
Creators: name: Wu, Yi-Chiao
name: Tobing, Patrick Lumban
name: Kobayashi, Kazuhiro
name: Hayashi, Tomoki
name: Toda, Tomoki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In this paper, we integrate a simple non-parallel voice conversion (VC) system with a WaveNet (WN) vocoder and a proposed collapsed speech suppression technique. The effectiveness of WN as a vocoder for generating high-fidelity speech waveforms on the basis of acoustic features has been confirmed in recent works. However, when combining the WN vocoder with a VC system, the distorted acoustic features, acoustic and temporal mismatches, and exposure bias usually lead to significant speech quality degradation, making WN generate some very noisy speech segments called collapsed speech. To tackle the problem, we take conventional-vocoder-generated speech as the reference speech to derive a linear predictive coding distribution constraint (LPCDC) to avoid the collapsed speech problem. Furthermore, to mitigate the negative effects introduced by the LPCDC, we propose a collapsed speech segment detector (CSSD) to ensure that the LPCDC is only applied to the problematic segments to limit the loss of quality to short periods. Objective and subjective evaluations are conducted, and the experimental results confirm the effectiveness of the proposed method, which further improves the speech quality of our previous non-parallel VC system submitted to Voice Conversion Challenge 2018.
description: 13 pages, 13 figures, 1 table, accepted to publish in IEEE Access
Elliptical torii in a constant magnetic field
Creators: name: Encinosa, M.
name: Jack, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Schrodinger equation for an electron on the surface of an elliptical torus in the presence of a constant azimuthally symmetric magnetic field is developed. The single particle spectrum and eigenfunctions as a function of magnetic flux through the torus are determined and it is shown that inclusion of the geometric potential is necessary to recover the limiting cases of vertical strip and flat ring structures.
description: 11 pages revtex4
Fractional Types: Expressive and Safe Space Management for Ancilla Bits
Creators: name: Chen, Chao-Hong
name: Choudhury, Vikraman
name: Carette, Jacques
name: Sabry, Amr
Publisher: name: arXiv
Year: 2020
Subjects: subject: Programming Languages (cs.PL)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F.1.1; F.3.2; D.3.2

description: In reversible computing, the management of space is subject to two broad classes of constraints. First, as with general-purpose computation, every allocation must be paired with a matching de-allocation. Second, space can only be safely de-allocated if its contents are restored to their initial value from allocation time. Generally speaking, the state of the art provides limited partial solutions that address the first constraint by imposing a stack discipline and by leaving the second constraint to programmers' assertions. We propose a novel approach based on the idea of fractional types. As a simple intuitive example, allocation of a new boolean value initialized to $\texttt{false}$ also creates a value $1/{\texttt{false}}$ that can be thought of as a garbage collection (GC) process specialized to reclaim, and only reclaim, storage containing the value $\texttt{false}$. This GC process is a first-class entity that can be manipulated, decomposed into smaller processes and combined with other GC processes. We formalize this idea in the context of a reversible language founded on type isomorphisms, prove its fundamental correctness properties, and illustrate its expressiveness using a wide variety of examples. The development is backed by a fully-formalized Agda implementation.
description: For the agda formalization, see https://github.com/DreamLinuxer/FracAncilla
Life Cycle Analysis of The Civil and Mechanical Engineering Building
Creators: name: Algeo, Tyler
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Tidally induced warps of spiral galaxies in IllustrisTNG
Creators: name: Semczuk, Marcin
name: Lokas, Ewa L.
name: D'Onghia, Elena
name: Athanassoula, E.
name: Debattista, Victor P.
name: Hernquist, Lars
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Warps are common features in both stellar and gaseous disks of nearby spiral galaxies with the latter usually easier to detect. Several theories have been proposed in the literature to explain their formation and prevalence, including tidal interactions with external galaxies. Observational correlations also suggest the importance of tides for warp formation. Here, we use the TNG100 run from the magnetohydrodynamical cosmological simulation suite IllustrisTNG to investigate the connection between interactions and the formation of gas warps. We find that in the sample of well-resolved gas-rich spiral galaxies ($10^{10}\lesssim\mathrm{M_{*}/M_{\odot}}\lesssim10^{11}$ at $z=0$) from the simulation TNG100-1, about $16\%$ possess the characteristic S-shaped warp. Around one third of these objects have their vertical morphology induced by interactions with other galaxies. Half of these interactions end with the perturber absorbed by the host. Warps formed in interactions are more asymmetrical than the remaining sample, however after the interaction the asymmetry decreases with time. We find that warps induced by interactions survive on average for $<1$ Gyr. The angle between the orbital angular momentum of the perturber and the angular momentum of the host's disk that most likely leads to warp formation is around 45 degrees. While our main goal is to investigate tidally induced warps, we find that during interactions in addition to tides, new gas that is accreted from infalling satellites also can contribute to warp formation.
description: 13 pages, 11 figures, submitted to MNRAS
从"文化叠加性"的角度概述越南社会的"三教合流"
Creators: name: 靳, 蕊宁
name: Vuong, Quan-Hoang
Publisher: name: Zenodo
Year: 2023
Subjects: 文化叠加性
三教合流

description: 从 “文化叠加性” 的角度概述越南社会的 “三教合流”
title: Acoustical Exploitation of Rough, Mixed Impedance and Porous Surfaces Outdoors
Creators: name: Bashir, Imran
Publisher: name: The Open University
Year: 2014

description: This thesis is a contribution towards developing cost-effective ways for reducing outdoor traffic noise in outdoor environments by exploiting the interaction between sound travelling directly to a listener from the source and sound reflected by the intervening ground. Sound propagation over different kinds of porous, rough and mixed impedance ground surfaces have been studied experimentally and numerically. Measurements of short-range acoustic level difference spectra over outdoor ground surfaces and artificially-created surfaces outdoors and in the laboratory have been compared with predictions to establish suitable impedance models. Sound propagation over mixed impedance ground having single or multiple impedance discontinuities has also been studied. Acoustic transmission loss through vegetation, crops and hedges has been investigated. The phenomenon of sound diffraction and periodicity due to rough periodic ground surfaces has been explored through artificially created rough surfaces in the laboratory and outdoors. The phenomenon of surface wave propagation over rough hard surfaces and porous surfaces has been explored through laboratory experiments. Measured data indoors and outdoors have been used to validate numerical (BEM and FEM), empirical and analytical (MST) prediction techniques. The validated numerical methods have been used to make predictions at scales suitable for attenuating traffic noise by means of carefully designed ground treatments. The work has also been extended to railway and tramway noise. It has been found that replacing hard ground with porous ground, introducing single or multiple impedance discontinuities, growing vegetation and introducing low height roughness can all contribute between 3 and 15 dB additional attenuation of traffic noise. In respect of replacing hard ground by porous ground, it is concluded that the ground with lowest flow resistivity i.e. grassland left untouched and allowed to grow wild gives the best attenuation performance. However, dividing a single width of soft ground into alternating strips of hard and soft surfaces does not improve the insertion loss. The overall width of the soft surface is the main factor. Cultivating crops over porous ground can enhance the attenuation but the effect is not very significant for A-weighted levels as most of additional attenuation occurs at higher frequencies above 3 kHz. A 0.3 m high and at least 3 m wide lattice structure design is found to be very useful for traffic noise attenuation since it offers greater insertion loss than the same width and height of parallel low walls and the resulting attenuation is azimuthal angle independent. It has been shown also that the potentially negative effect on insertion loss due to propagation of roughness-induced surface waves over rough surfaces can be reduced by introducing sound absorbing material in between the walls.
An Investigation of Laboratory-Grown "Ice Spikes"
Creators: name: Libbrecht, K. G.
name: Lui, K.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have investigated the formation of 10-50 mm long ``ice spikes'' that sometimes appear on the free surface of water when it solidifies. By freezing water under different conditions, we measured the probability of ice spike formation as a function of: 1) the air temperature in the freezing chamber, 2) air motion in the freezing chamber (which promotes evaporative cooling), 3) the quantity of dissolved salts in the water, and 4) the size, shape, and composing material of the freezing vessel. We found that the probability of ice spike formation is greatest when the air temperature is near -7 C, the water is pure, and the air in the freezing chamber is moving. Even small quantities of dissolved solids greatly reduce the probability of ice spike formation. Under optimal conditions, approximately half the ice cubes in an ordinary ice cube tray will form ice spikes. Guided by these observations, we have examined the Bally-Dorsey model for the formation of ice spikes. In this model, the density change during solidification forces supercooled water up through a hollow ice tube, where it freezes around the rim to lengthen the tube. We propose that any dissolved solids in the water will tend to concentrate at the tip of a growing ice spike and inhibit its growth. This can qualitatively explain the observation that ice spikes do not readily form using water containing even small quantities of dissolved solids.
Provenance of classical Hamiltonian time crystals
Creators: name: Alekseev, Anton
name: Jin, Dai
name: Niemi, Antti J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Classical Hamiltonian systems with conserved charges and those with constraints often describe dynamics on a pre-symplectic manifold. Here we show that a pre-symplectic manifold is also the proper stage to describe autonomous energy conserving Hamiltonian time crystals. We explain how the occurrence of a time crystal relates to the wider concept of spontaneously broken symmetries; in the case of a time crystal, the symmetry breaking takes place in a dynamical context. We then analyze in detail two examples of time crystalline Hamiltonian dynamics. The first example is a piecewise linear closed string, with dynamics determined by a Lie-Poisson bracket and Hamiltonian that relates to membrane stability. We explain how the Lie-Poisson brackets descents to a time crystalline pre-symplectic bracket, and we show that the Hamiltonian dynamics supports two phases; in one phase we have a time crystal and in the other phase time crystals are absent. The second example is a discrete Hamiltonian variant of the Q-ball Lagrangian of time dependent non-topological solitons. We explain how a Q-ball becomes a time crystal, and we construct examples of time crystalline Q-balls.
description: 17 pages 4 figures
DEBT AND EFFICIENCY AS DETERMINANTS OF FARM SURVIVAL: AN EMPIRICAL APPROACH
Creators: name: Leathers, Howard D.
name: Leathers, Howard D.
Publisher: name: Unknown
Year: 1987
Subjects: Agricultural and Food Policy
Agricultural Finance

description: Thls paper presents a method for empirical evaluation of the relative importance of debt and efficiency as determinants of farm survival. For a sample of Wisconsin farms, for the period 1960-1975, debt has a significant negative effect on survivability; efficiency does not have a significant impact.
title: Electronic commerce in the food retail industry: a case study comparison of virtual grocers' and virtual meal retailers' strategies and business processes
Creators: name: Kaufman, Jill Harbin
Publisher: name: University of Kent
Year: 2022

description: This research focused on an emerging area of virtual retailing in the food retail industry. There is a paradigm shift in the way consumers are interacting with retailers within fundamental business processes due to the exploitation of new virtual retail channels. It reports on the results of an investigation of strategies and business processes of virtual food retailers. The research was based on intensive case study interviews. An objective of this research was to provide a deeper understanding of the key issues for successful implementation of business-to consumer e-commerce. An additional focus was to examine what changes are needed to the traditional concepts of service marketing to address e commerce. The cases' were analyzed within the context of the marketing mix 7Ps. There were differences in the approach of brick food retailers who added a virtual retail channel and virtual only food retailers as described in the analysis. There were also differences in the business process strategies between intermediaries and in-house implementation virtual retailers. This research found that the e-food retailers must address the fundamental business aspects presented by the 7Ps. These business fundamentals are not "thrown out the door" in the virtual world; however, to utilize the virtual tools effectively the 7Ps need to be viewed through a new lens. Two original contributions from this research are the Virtual Order Cycle and the discovery of a new sub-segment of E-commerce called Local E-commerce
Presentation: Twenty Weeks Of Centella Asiatica Improved Cognitive Function In Women Elderly With Dementia
Creators: name: Lisna Anisa Fitriana
name: Kusnandar Anggadiredja
name: Setiawan
name: I Ketut Adnyana
Publisher: name: Zenodo
Year: 2021

description: This material presented in ACHOST 2020
Additional file 2 of Community engagement interventions for communicable disease control in low- and lower- middle-income countries: evidence from a review of systematic reviews
Creators: name: K. Questa
name: M. Das
name: R. King
name: M. Everitt
name: C. Rassi
name: C. Cartwright
name: T. Ferdous
name: D. Barua
name: N. Putnis
name: A. C. Snell
name: R. Huque
name: J. Newell
name: H. Elsey
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Computational Biology

description: Additional file 2: Table S1. Characteristics of Included Systematic Reviews.
A Case for Data Centre Traffic Management on Software Programmable Ethernet Switches
Creators: name: Tokmakov, Kamil
name: Sarker, Mitalee
name: Domaschka, Jörg
name: Wesner, Stefan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Virtualisation first and cloud computing later has led to a consolidation of workload in data centres that also comprises latency-sensitive application domains such as High Performance Computing and telecommunication. These types of applications require strict latency guarantees to maintain their Quality of Service. In virtualised environments with their churn, this demands for adaptability and flexibility to satisfy. At the same time, the mere scale of the infrastructures favours commodity (Ethernet) over specialised (Infiniband) hardware. For that purpose, this paper introduces a novel traffic management algorithm that combines Rate-limited Strict Priority and Deficit round-robin for latency-aware and fair scheduling respectively. In addition, we present an implementation of this algorithm on the bmv2 P4 software switch by evaluating it against standard priority-based and best-effort scheduling.
description: 8th IEEE International Conference on Cloud Networking (IEEE CloudNet 2019)
A quick and dirty irreducibility Test for Multivariate Polynomials over F_q
Creators: name: Bothmer, H. -C. Graf v.
name: Schreyer, F. -O.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 12E05

description: We provide some statistics about an irreducibility/reducibility test for multivariate polynomials over finite fields based on counting points. The test works best for polynomials in a large number of variables and can also be applied to black box polynomials.
description: 11 pages, 4 figures; AMSlatex
Ο ρόλος των δημογραφικών συνιστωσών» στο «Σχέδιο Ανάπτυξης για την Ελληνική Οικονομία», μια κριτική προσέγγιση. (The role of demographic components in the" Development Plan for the Greek Economy ", a critical approach.) DEMONEWS,42,2021
Creators: name: BYRON KOTZAMANIS
Publisher: name: figshare
Year: 2021
Subjects: subject: 160399 Demography not elsewhere classified
subject: FOS: Sociology

description: Recently, the “Development Plan for the Greek Economy – Final Report” was publicized. This plan, which includes a multitude of interesting statistical data, arrives at ascertainment by setting ‘ambitious’ aims (increase in per capita income, enhancing social cohesion, circular economy, green growth, productivity growth, export increase, etc.), the fulfilment of which, according to its authors, entails – among others – the increase in today’s low productivity as well as enhancing the openness of Greek economy. This report considers fleetingly post-war demographic evolutions in Greece which have already caused considerable worries, and which will also affect the economy of the country in the immediate decades to come. Hereby, we point out the underestimation of the role of demographic components by the authors of the Report, by considering the ‘Plan’, critically, from a demographer’s perspective only.
Το άρθρο αυτό εξετάζει κριτικά το “Σχέδιο Ανάπτυξης για την Ελληνική Οικονομία” που πρόσφατα δημοσιοποιήθηκε. Το κείμενο αυτό που περιλαμβάνοντας πλήθος ενδιαφερόντων στατιστικών στοιχείων καταλήγει σε διαπιστώσεις θέτοντας ευγενείς στόχους η υλοποίηση των οποίων κατά τους συντάκτες του προϋποθέτει -μεταξύ άλλων- την αύξηση της χαμηλής σήμερα παραγωγικότητας και την ενίσχυση της εξωστρέφειας της ελληνικής οικονομίας. Στο «Σχέδιο» όμως οι δημογραφικές εξελίξεις που επηρεάζουν - και θα συνεχίσουν και τις επόμενες δεκαετίες να επηρεάζουν- εκτός των άλλων και την ελληνική οικονομία δημιουργώντας ήδη έντονες ανησυχίες ελάχιστα λαμβάνονται υπόψη. Στο κείμενό μας αναδεικνύουμε την υποτίμηση από τους συντάκτες της Έκθεσης του ρόλου των δημογραφικών συνιστωσών, εξετάζοντας κριτικά από τη οπτική γωνιά του δημογράφου και μόνον, το προαναφερθέν «Σχέδιο».
Models of communication and control for brain networks: distinctions, convergence, and future outlook
Creators: name: Srivastava, Pragya
name: Nozari, Erfan
name: Kim, Jason Z.
name: Ju, Harang
name: Zhou, Dale
name: Becker, Cassiano
name: Pasqualetti, Fabio
name: Bassett, Danielle S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Recent advances in computational models of signal propagation and routing in the human brain have underscored the critical role of white matter structure. A complementary approach has utilized the framework of network control theory to better understand how white matter constrains the manner in which a region or set of regions can direct or control the activity of other regions. Despite the potential for both of these approaches to enhance our understanding of the role of network structure in brain function, little work has sought to understand the relations between them. Here, we seek to explicitly bridge computational models of communication and principles of network control in a conceptual review of the current literature. By drawing comparisons between communication and control models in terms of the level of abstraction, the dynamical complexity, the dependence on network attributes, and the interplay of multiple spatiotemporal scales, we highlight the convergence of and distinctions between the two frameworks. Based on the understanding of the intertwined nature of communication and control in human brain networks, this work provides an integrative perspective for the field and outlines exciting directions for future work.
description: 23 pages, 4 figures
Long-lived entanglement generation of nuclear spins using coherent light
Creators: name: Katz, Or
name: Shaham, Roy
name: Polzik, Eugene S.
name: Firstenberg, Ofer
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Nuclear spins of noble-gas atoms are exceptionally isolated from the environment and can maintain their quantum properties for hours at room temperature. Here we develop a mechanism for entangling two such distant macroscopic ensembles by using coherent light input. The interaction between the light and the noble-gas spins in each ensemble is mediated by spin-exchange collisions with alkali-metal spins, which are only virtually excited. The relevant conditions for experimental realizations with ^{3}\text{He} or ^{129}\text{Xe} are outlined.
Theory for structure and bulk-modulus determination
Creators: name: Ziambaras, Eleni
name: Schroder, Elsebeth
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A new method for direct evaluation of both crystalline structure, bulk modulus B_0, and bulk-modulus pressure derivative B'_0 of solid materials with complex crystal structures is presented. The explicit and exact results presented here permit a multidimensional polynomial fit of the total energy as a function of all relevant structure parameters to simultaneously determine the equilibrium configuration and the elastic properties. The method allows for inclusion of general (internal) structure parameters, e.g., bond lengths and angles within the unit cell, on an equal footing with the unit-cell lattice parameters. The method is illustrated by the calculation of B_0 and B'_0 for a few selected materials with multiple structure parameters for which data is obtained by using first-principles density functional theory.
description: 7 pages, 2 figures, submitted to Phys. Rev. B
New bounds for Szemeredi's Theorem, I: Progressions of length 4 in finite field geometries
Creators: name: Green, Ben
name: Tao, Terence
Publisher: name: arXiv
Year: 2005
Subjects: subject: Combinatorics (math.CO)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Let F be a fixed finite field of characteristic at least 5. Let G = F^n be the n-dimensional vector space over F, and write N := |G|. We show that if A is a subset of G with size at least c_F N(log N)^{-c}, for some absolute constant c > 0 and some c_F > 0, then A contains four distinct elements in arithmetic progression. This is equivalent, in the usual notation of additive combinatorics, to the assertion that r_4(G) <
description: 30 pages, some irritating small errors corrected
Thermodynamic properties of the one-dimensional Ising model with magnetoelastic interaction
Creators: name: Balcerzak, T.
name: Szałowski, K.
name: Jaščur, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The Ising one-dimensional (1D) chain with spin $S=1/2$ and magnetoelastic interactions is studied with the lattice contribution included in the form of elastic interaction and thermal vibrations simultaneously taken into account. The magnetic energy term and the elastic (static) energy term based on the Morse potential are calculated exactly. The vibrational energy is calculated in the Debye approximation, in which the anharmonicity is introduced by the Gr{ü}neisen parameter. The total Gibbs potential, including both the magnetic field, as well as the external force term, is constructed and from its minimum the equation of state is derived. From the Gibbs energy all the thermodynamic properties are calculated in a self-consistent manner. The comprehensive numerical calculations are performed in a full temperature range, i.e., from zero temperature up to the vicinity of melting. In particular, a role of magneto-elastic coupling is emphasized and examined. The numerical results are illustrated in figures and discussed.
Sympathetic cooling of $^9Be^+$ and $^{24}Mg^+$ for quantum logic
Creators: name: Barrett, M. D.
name: DeMarco, B.
name: Schaetz, T.
name: Leibfried, D.
name: Britton, J.
name: Chiaverini, J.
name: Itano, W. M.
name: Jelenkovic, B.
name: Jost, J. D.
name: Langer, C.
name: Rosenband, T.
name: Wineland, D. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate the cooling of a two species ion crystal consisting of one $^9Be^+$ and one $^{24}Mg^+$ ion. Since the respective cooling transitions of these two species are separated by more than 30 nm, laser manipulation of one ion has negligible effect on the other even when the ions are not individually addressed. As such this is a useful system for re-initializing the motional state in an ion trap quantum computer without affecting the qubit information. Additionally, we have found that the mass difference between ions enables a novel method for detecting and subsequently eliminating the effects of radio frequency (RF) micro-motion.
description: Submitted to PRA
title: To vaccinate or not to vaccinate? This is the question! Delay the Booster, maybe you get a Bratwurscht!
Creators: name: Moritz, Karl-Heinz
name: Stadtmann, Georg
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2022

description: A game-theoretic setting is used to illuminate the conflict between vaccination proponents and vaccination opponents. A central result is that vaccination proponents could in principle persuade vaccination opponents to vaccinate by means of subsidization. Such a subsidy could increase benefits for both groups. Deeper analysis provides numerous further insights regarding the stability of these results.
description: Discussion papers of the Faculty of Business Administration and Economics; 426
Format for batch registration of DOIs in the Global Information System for ex situ PGRFA
Creators: name: Marsella, Marco
Publisher: name: ITPGRFA
Year: 2024
Subjects: ITPGRFA
GLIS
DOI
Batch format
ex situ
PGRFA

description: This ZIP archive contais the Excel temaple and the accompanying documentation to submit PGRFA information for assignation of DOIs through the Global Information System (GLIS) of the International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA). For ex situ PGRFA only.
The Formation of a Helium White Dwarf in Close Binary System with Diffusion
Creators: name: Benvenuto, O. G.
name: De Vito, M. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the evolution of a system composed by a 1.4 \msun neutron star and a normal, solar composition star of 2 \msun in orbit with a period of 1 day. Calculations were performed employing the binary hydro code presented in Benvenuto & De Vito (2003) that handle the mass transfer rate in a fully implicit way. Now we included the main standard physical ingredients together with diffusion processes and a proper outer boundary condition. We have assumed fully non - conservative mass transfer episodes. In order to study the interplay of mass loss episodes and diffusion we considered evolutionary sequences with and without diffusion in which all Roche lobe overflows (RLOFs) produce mass transfer. Another two sequences in which thermonuclearly-driven RLOFs are not allowed to drive mass transfer have been computed with and without diffusion. To our notice, this study represents the first binary evolution calculations in which diffusion is considered. The system produces a helium white dwarf of \sim 0.21 \msun in an orbit with a period of \sim 4.3 days for the four cases. We find that mass transfer episodes induced by hydrogen thermonuclear flashes drive a tiny amount of mass transfer. As diffusion produces stronger flashes, the amount of hydrogen - rich matter transferred is slightly higher than in models without diffusion. We find that diffusion is the main agent in determining the evolutionary timescale of low mass white dwarfs even in presence of mass transfer episodes.
description: 15 pages, 9 figures. Accepted for publication in MNRAS
Economic Value of Information Systems in Agriculture: Cohesion and Coupling of Information Elements
Creators: name: Tyrychtr, Jan
name: Tyrychtr, Jan
Publisher: name: Unknown
Year: 2017
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: workflow process
subject: information systems
subject: cohesion
subject: evaluating process
subject: agriculture

description: Evaluating the economics of information systems is a difficult task. In addition to classical approaches to the economic evaluation of information systems, attention is paid to individual processes and workflows. The quality of information systems functionality is based on a quality workflow processes. A poorly designed workflow of the information system leads to a number of errors and problems in exchanging information within the system. The lower the error rate and the higher the efficiency of individual activities, the higher the economic value of the information system and, as the case may be, of other analytical, expert or decision systems in the organisation. In this paper, known principles of cohesion and coupling are used. The selected real process is evaluated within the framework of the agricultural information system operated by the Ministry of Agriculture of the Czech Republic. In the article is created a design the structure of information elements of the modelled workflow, measured cohesion and coupling and compared with two alternatives.
Economic Aspects of Food Security in Ukrainian Meat and Milk Clusters
Vasylieva, Natalia
Creators: name: Vasylieva, Natalia
name: Vasylieva, Natalia
Publisher: name: Unknown
Year: 2017
Subjects: subject: Food Security and Poverty
subject: food security
subject: meat and milk clusters
subject: indicators of misbalances
subject: production and consumption
subject: productivity and profitability
subject: prices and solvency
subject: cluster model

description: The goal of the article was to accomplish mathematical estimations of the misbalances and calculate available reserves in providing food security by meat and milk. This issue has considerable economic and social values that imply maintaining agrarians’ welfare and people’s health. The disproportions in meat and milk clusters have been analyzed by means of Lorenz curves and inequality indicators – Hoover and Theil indices, Gini coefficient, and also 20:20 Ratio. It has been grounded that increasing animal productivity and wholesale prices for meat and milk, as well as reducing their retail prices and raising solvency of population would be the essential reserves in supporting food security in the agricultural clusters. The proposed model of defining interregional clusters has made possible to identify the priority options of providing food security and balancing meat and milk supply and demand. All the offered developments and recommendations have been verified at Ukrainian meat and milk clusters.
Format for batch registration of DOIs in the Global Information System for ex situ PGRFA
Creators: name: Marsella, Marco
Publisher: name: ITPGRFA
Year: 2024
Subjects: ITPGRFA
GLIS
DOI
Batch format
ex situ
PGRFA

description: This ZIP archive contais the Excel temaple and the accompanying documentation to submit PGRFA information for assignation of DOIs through the Global Information System (GLIS) of the International Treaty on Plant Genetic Resources for Food and Agriculture (ITPGRFA).
Phenomenological analysis of lepton and quark Yukawa couplings in SO(10) two Higgs model
Creators: name: Matsuda, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate a model that the Yukawa coupling form is constructed by two kinds of matrix (M_0 and M_1). For example, in the SO(10) GUT model, M_0 and M_1 are Yukawa couplings generated by the 10 and 126 Higgs scalars. We study how this model can give the observed mass and mixings of quarks and leptons. Parameter fitting is fully scanned by assuming all the input data to be normally distributed around the center value.
description: 14 pages, 7 figures
Modifications of sodium channel voltage dependence induce arrhythmia-favouring dynamics of cardiac action potentials
Creators: name: Rose, Pia
name: Schleimer, Jan Hendrik
name: Schreiber, Susanne
Publisher: name: Humboldt-Universität zu Berlin
Year: 2020
Subjects: subject: 500 Naturwissenschaften und Mathematik

description: Heart arrhythmia is a pathological condition where the sequence of electrical impulses in the heart deviates from the normal rhythm. It is often associated with specific channelopathies in cardiac tissue, yet how precisely the changes in ionic channels affect the electrical activity of cardiac cells is still an open question. Even though sodium channel mutations that underlie cardiac syndromes like the Long-Q-T and the Brugada-syndrome are known to affect a number of channel parameters simultaneously, previous studies have predominantly focused on the persistent late component of the sodium current as the causal explanation for an increased risk of heart arrhythmias in these cardiac syndromes. A systematic analysis of the impact of other important sodium channel parameters is currently lacking. Here, we investigate the reduced ten-Tusscher-model for single human epicardium ventricle cells and use mathematical bifurcation analysis to predict the dependence of the cardiac action potential on sodium channel activation and inactivation time-constants and voltage dependence. We show that, specifically, shifts of the voltage dependence of activation and inactivation curve can lead to drastic changes in the action potential dynamics, inducing oscillations of the membrane potential as well as bistability. Our results not only demonstrate a new way to induce multiple co-existing states of excitability (biexcitability) but also emphasize the critical role of the voltage dependence of sodium channel activation and inactivation curves for the induction of heart-arrhythmias.
Pseudaulacaspis MacGillivray 1921
Creators: name: Suh, Soo-Jung
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Diaspididae
Pseudaulacaspis

description: Key to species of Pseudaulacaspis from Korea   (slide mounted adult female)
 1. Body oval or turbinate, length usually less than 1.5 times greatest width............................... 2
 — Body elongate, length usually 1.5 times or more than greatest width...................................... 3
 2(1). Third space usually with 1 gland spine; at least 1 bifurcate or trifurcate gland spine in second, third, or fourth space; antennae sclerotized projections apically; with 5–22 (10) small macroducts on each side of the metathorax and segment 1.....................................................................................................................  Pseudaulacaspis pentagona (Targioni-Tozzetti)
 — Third space usually with 2 or more gland spines; simple gland spine in second, third, or fourth space; antennae rounded apically; with 0–15 (5) small macroducts on each side of the metathorax and segment 1 (on usually Prunus)...  Pseudaulacaspis prunicola (Maskell)
 3(1). With perispiracular pores near posterior spiracles..................................................................... 4
 — Without perispiracular pores near posterior spiracles............................................................... 5
 4(3). With usually two rows of submarginal macroducts on abdominal segments 2 and 3; with 4–11 pores near anterior spiracles and 1–5 pores near posterior spiracles (found on Zelkova and Ulmus)...............................................................................  Pseudaulacaspis ulmicola Tang
 — With one row of submarginal macroducts on abdominal segments 2 and 3; with 13–27 pores near anterior spiracles and 6–10 pores near posterior spiracles (only found on Carpinus)......................................................................  Pseudaulacaspis latiloba (Takagi and Kawai)
 5(3). Without a duct on abdominal segment 6; antennae usually widely apart, width between antennae wider than that between median lobes (only found on Quercus)..........................................................................................................................  Pseudaulacaspis kiushiuensis (Kuwana)
 — With duct on abdominal segment 6; antennae usually close together, width between antennae narrower than that between median lobes (on many hosts).........................................................................................................................................  Pseudaulacaspis cockerelli (Cooley)
description: Published as part of Suh, Soo-Jung, 2015, New records of armored scale insects, Pseudaulacaspis MacGillivray (Hemiptera: Diaspididae), in Korea, pp. 1-8 in Insecta Mundi 2015 (403) on page 6, DOI: 10.5281/zenodo.4645764
title: Korea-U.S. trade negotiation on market access: dispute over the Korean shelf-life regulations for food products
Creators: name: Kim, Kee Deok
Publisher: name: University of Kent
Year: 2022

description: This study questions the salient variables in the settlement of trade disputes arising from the market access problem between Korea and the United States. An examination of previous research on Korea-U.S. trade disputes finds that no single research approach provided a complete explanation of them. Examination of the bilateral negotiations left some unexplained 'black boxes.' This study therefore develops a synthesised framework for analysis that combines distinct levels of analysis: state power (structural); institutional frameworks (the state); and lobby groups (public choice). Furthermore, it operationalises the new framework for analysis by identifying the following three variables within the trade dispute between the two countries: negotiation power, government trade agencies, and interest groups. Part I outlines the historical evolution of the economic relations of the two countries in the context of the way in which the relations have changed over the years. This section provides the theoretical framework for the following case study. * Part II traces the negotiation process of the case in greater detail. It begins with a brief account of the case. It shows the basic positions of the four actors involved in the case: the two main interest groups and the two governments. Subsequent chapters respectively trace the negotiations under the informal diplomatic process, Section 301 procedure, and the WTO dispute settlement procedure. Particular attention is given to the interactions between the actors in the bilateral negotiation process as well as in the domestic process of each country. The deadlocks and success of the negotiations are analysed in the context of the three variables. The case analysis finds that all the three variables influenced the process and outcomes of the negotiations, and further shows the basic mechanism of the interrelationship of the variables. This study concludes that in order to gain a clearer picture of Korea-U.S. market access disputes, it is necessary to see them at least through the different angles of the three variables. Based on this conclusion, this study proposes some policy alternatives to strengthen the negotiation power of Korea.
Additional file 1 of Community engagement interventions for communicable disease control in low- and lower- middle-income countries: evidence from a review of systematic reviews
Creators: name: K. Questa
name: M. Das
name: R. King
name: M. Everitt
name: C. Rassi
name: C. Cartwright
name: T. Ferdous
name: D. Barua
name: N. Putnis
name: A. C. Snell
name: R. Huque
name: J. Newell
name: H. Elsey
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: Computational Biology

description: Additional file 1. Search Strategies.
Resonant capture in quadruple stellar systems
Creators: name: Tremaine, Scott
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Some quadruple star systems in the hierarchical 2+2 configuration exhibit orbit-orbit resonances between the two compact binaries. We show that the most important resonances occur at period ratios of 1:1, 3:2 and 2:1. We describe the conditions required for capture and show that they can be satisfied at the 3:2 and 2:1 resonances in binaries that migrate significantly in semimajor axis after circularization, probably through magnetic braking or gravitational radiation.
description: 13 pages, 1 figure
Life Cycle Analysis of UBC Buildings: The Thunderbird Residences
Creators: name: Wiebe, Jesse
Publisher: name: The University of British Columbia
Year: 2010

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Additional file 1 of Molecular investigation and genetic diversity of Pediculus and Pthirus lice in France
Creators: name: Amanzougaghene, Nadia
name: Mediannikov, Oleg
name: Ly, Tran Duc Anh
name: Gautret, Philippe
name: Davoust, Bernard
name: Fenollar, Florence
name: Arezki Izri
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Oligonucleotide sequences of primers and probes used for real-time PCR and conventional PCR in the present study.