cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Entropy scaling law and the quantum marginal problem
Creators: name: Kim, Isaac H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Quantum many-body states that frequently appear in physics often obey an entropy scaling law, meaning that an entanglement entropy of a subsystem can be expressed as a sum of terms that scale linearly with its volume and area, plus a correction term that is independent of its size. We conjecture that these states have an efficient dual description in terms of a set of marginal density matrices on bounded regions, obeying the same entropy scaling law locally. We prove a restricted version of this conjecture for translationally invariant systems in two spatial dimensions. Specifically, we prove that a translationally invariant marginal obeying three non-linear constraints -- all of which follow from the entropy scaling law straightforwardly -- must be consistent with some global state on an infinite lattice. Moreover, we derive a closed-form expression for the maximum entropy density compatible with those marginals, deriving a variational upper bound on the thermodynamic free energy. Our construction's main assumptions are satisfied exactly by solvable models of topological order and approximately by finite-temperature Gibbs states of certain quantum spin Hamiltonians.
description: 61 pages, 7 figures, ~200 in-line figures. Added the toric code example and a discussion about an efficient tensor network construction. More detailed explanation added in Section II
Estándares de prueba del daño en las acciones de responsabilidad civil contra cárteles bajo derecho Español y de la UE
Creators: name: Marcos Fernandéz, Francisco
Publisher: name: Zenodo
Year: 2020
Subjects: Defensa de la competencia
Aplicación privada
Daños
Cártel
Colusión
Daño anticompetitivo
Infracción por objeto
Infracción por efecto
Cuantificación
Carga de la prueba
Presunción
Efectividad
Competition law
Private enforcement
Damages
Cartel
Collusion
Effect
Quantification
Standard of proof
Burden of proof
Presumption
Effectiveness

description: Los últimos pronunciamientos judiciales en España referidos a acciones por daños frente a cárteles han evidenciado una disparidad de enfoques en relación con las distintas facetas del daño, a pesar de los recientes avances por parte de varios órganos judiciales de segunda instancia. Los dos precedentes del Tribunal Supremo en el Cártel del Azúcar han sentado las bases de este tipo de acciones, pero no responden a todas las cuestiones que ahora se suscitan. La Directiva de Daños tampoco ofrece respuestas claras más allá de consolidar el “acquis” del Derecho de la Unión y de recordar en su artículo 17(1) que los Estados Miembros han de velar por que ni las reglas de la carga de la prueba ni tampoco los estándares de prueba vulneren el principio de efectividad. El objetivo de este trabajo consiste en exponer las dificultades jurídicas y fácticas de la prueba de la existencia del daño y su cuantificación en el caso de acciones de responsabilidad civil contra cárteles en España, así como en identificar los principios y criterios que faciliten su interpretación en la práctica The latest judicial decisions rendered by Spanish courts in relation to cartel damages actions have shown a disparity of approaches concerning the issue of harm, notwithstanding recent development by several second instance courts. The two precedents of the Supreme Court in the Sugar Cartel case have laid the foundations of this type of actions, but fall short of providing a clear answer to all the questions that are presently raised. Nor does the Damages Directive provide a clear response beyond consolidating the “acquis” of Union law and recalling in article 17(1) that Member States must ensure that neither the rules on the burden of proof nor the applicable legal standards breach the principle of effectiveness. The purpose of this paper is to bring out the current legal and factual difficulties regarding the proof of the existence of damage and its quantification in cartel damages actions in Spain, as well as to anticompetitive harm, by object, by identify the principles and criteria that may ease their interpretation in practice.
When Inertia Generates Political Cycles
Creators: name: Soubeyran, Raphael
name: Soubeyran, Raphael
Publisher: name: Unknown
Year: 2006
Subjects: Political Economy

description: We propose a simple infinite horizon of repeated elections with two candidates. Furthermore we suppose that the government policy presents some degree of inertia, i.e. a new government cannot completely change the policy implemented by the incumbent. When the policy inertia is strong enough, no party can win the election a consecutive infinite number of times.
Organised Randoms: Learning and correcting for systematic galaxy clustering patterns in KiDS using self-organising maps
Creators: name: Johnston, Harry
name: Wright, Angus H.
name: Joachimi, Benjamin
name: Bilicki, Maciej
name: Chisari, Nora Elisa
name: Dvornik, Andrej
name: Erben, Thomas
name: Giblin, Benjamin
name: Heymans, Catherine
name: Hildebrandt, Hendrik
name: Hoekstra, Henk
name: Joudaki, Shahab
name: Vakili, Mohammadjavad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a new method for the mitigation of observational systematic effects in angular galaxy clustering via corrective random galaxy catalogues. Real and synthetic galaxy data, from the Kilo Degree Survey's (KiDS) 4$^{\rm{th}}$ Data Release (KiDS-$1000$) and the Full-sky Lognormal Astro-fields Simulation Kit (FLASK) package respectively, are used to train self-organising maps (SOMs) to learn the multivariate relationships between observed galaxy number density and up to six systematic-tracer variables, including seeing, Galactic dust extinction, and Galactic stellar density. We then create `organised' randoms, i.e. random galaxy catalogues with spatially variable number densities, mimicking the learnt systematic density modes in the data. Using realistically biased mock data, we show that these organised randoms consistently subtract spurious density modes from the two-point angular correlation function $w(\vartheta)$, correcting biases of up to $12σ$ in the mean clustering amplitude to as low as $0.1σ$, over a high signal-to-noise angular range of 7-100 arcmin. Their performance is also validated for angular clustering cross-correlations in a bright, flux-limited subset of KiDS-$1000$, comparing against an analogous sample constructed from highly-complete spectroscopic redshift data. Each organised random catalogue object is a `clone' carrying the properties of a real galaxy, and is distributed throughout the survey footprint according to the parent galaxy's position in systematics-space. Thus, sub-sample randoms are readily derived from a single master random catalogue via the same selection as applied to the real galaxies. Our method is expected to improve in performance with increased survey area, galaxy number density, and systematic contamination, making organised randoms extremely promising for current and future clustering analyses of faint samples.
description: 19 pages (7 appendix pages), 12 figures (8 appendix figures), accepted to A&A
How to detect gamma-rays from ground: an introduction to the detection concepts
Creators: name: Errando, Manel
name: Saito, Takayuki
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Indirect detection of gamma rays with ground-based observatories is currently the most sensitive experimental approach to characterize the gamma-ray sky at energies $>0.1$\,TeV. Ground-based detection of gamma-rays relies on the electromagnetic showers that gamma rays initiate in the Earth's atmosphere. In this chapter we will review the properties of electromagnetic air showers as well as the differences with respect to cosmic-ray showers that enable the rejection of the cosmic ray background. The experimental techniques that have been developed for ground-based detection of gamma rays will be introduced. These fall onto three main categories: air shower particle detectors, sampling Cherenkov arrays, and imaging atmospheric Cherenkov telescopes. Hybrid concepts as well as other experimental approaches are also discussed.
description: 24 pages, 11 figures, invited chapter in Handbook of X-ray and Gamma-ray Astrophysics (eds. Cosimo Bambi and Andrea Santangelo)
Fourier Transform Spectroscopy of the submillimetre continuum emission from hot molecular cores
Creators: name: Friesen, R. K.
name: Johnstone, D.
name: Naylor, D. A.
name: Davis, G. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used a Fourier Transform Spectrometer on the James Clerk Maxwell Telescope to study the submillimetre continuum emission from dust in three hot molecular cores (HMC). The spectral index beta of the dust emission for these sources has been determined solely within the 30 GHz wide 350 GHz (850 micron) passband to an accuracy comparable to those determined through multi-wavelength observations. We find an average beta = 1.6, in agreement with spectral indices determined from previous submillimetre observations of these sources and with those determined for HMC in general. The largest single source of uncertainty in these results is the variability of the atmosphere at 350 GHz, and with better sky subtraction techniques we show that the dust spectral index can clearly be determined within one passband to high accuracy with a submillimetre FTS. Using an imaging FTS on SCUBA-2, the next generation wide-field submillimetre camera currently under development to replace SCUBA at the JCMT in 2006, we calculate that at 350 GHz it will be possible to determine beta to +/- 0.1 for sources as faint as 400 mJy/beam and to +/- 0.3 for sources as faint as 140 mJy/beam.
description: 11 pages, 5 figures, accepted for publication in MNRAS
The Evolution of Enterprise Reform in Africa: From State-owned Enterprises to Private Participation in Infrastructure - and Back?
Creators: name: Nellis, John
name: Nellis, John
Publisher: name: Unknown
Year: 2005
Subjects: Political Economy

description: Many African state-owned enterprises (SOEs), particularly those in infrastructure, have a long history of poor performance. From the outset, SOE financial and economic performance generally failed to meet the expectations of their creators and funders. By the late 1970s, the situation was alarming, and by early 1980s, critical. The poor financial performance of SOEs became so burdensome to government budgets that it attracted the attention of the international financial institutions, or IFIs. In response, in the 1980s, the World Bank approved SOE reforms that could be summed up in the term 'commercialization'. By the mid-1990s, however, the idea of making SOEs function efficiently and effectively under government management was largely abandoned by the IFIs and privatization and private participation in infrastructure, or PPI became the order of the day. Once more, however, the results were disappointing. PPI has not been as widely adopted as anticipated, nor has it generated the massive resources and changes hoped for, nor has it been widely accepted as beneficial by the African public. The findings of recent studies in Africa suggest that PPI should not be jettisoned, and that the more productive path is to recognize the limitations of the approach, and to work harder at creating the conditions needed to make it function effectively. This will entail, as many have recognized, an end to the view that public and private infrastructure provision is a dichotomy - a case of either-or, one or the other - and a better appreciation of the extent to which the performance of each is dependent on the competence of the other. In other words, for the private sector to perform well, public sector capacity must be enhanced. Moreover, proposed tactics of reform should fit more closely with the expectations and sentiments of the affected government, consumer base, and general population. This broader approach implies, probably, a reduction in the scope and, certainly, a reduction in the planned speed of operations. Improving infrastructure performance is a long-term matter.
"นวัตวิถีหัตถศิลป์ถิ่นสุรินทร์" ภูมิปัญญาหัตถกรรมอำเภอเขวาสินรินทร์ จังหวัดสุรินทร์
Creators: name: อัชราพร สุขทอง
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: นวัตวิถีหัตถศิลป์ถิ่นสุรินทร์
ภูมิปัญญาหัตถกรรม
นวัตวิถี
ผ้าไหมสุรินทร์
เครื่องเงินประเกือม

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 448-467
Dynamics of gravitational collapse in the axisymmetric Einstein-Vlasov system
Creators: name: Ames, Ellery
name: Andréasson, Håkan
name: Rinne, Oliver
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We numerically investigate the dynamics near black hole formation of solutions to the Einstein--Vlasov system in axisymmetry. Our results are obtained using a particle-in-cell and finite difference code based on the $(2+1)+1$ formulation of the Einstein field equations in axisymmetry. Solutions are launched from non-stationary initial data and exhibit type I critical behaviour. In particular, we find lifetime scaling in solutions containing black holes, and support that the critical solutions are stationary. Our results contain examples of solutions that form black holes, perform damped oscillations, and appear to disperse. We prove that complete dispersal of the solution implies that it has nonpositive binding energy.
description: Accepted version. 33 pages; 11 figures
Automatic detection of solar radio bursts in NenuFAR observations
Creators: name: Murphy, Pearse C.
name: Cecconi, Baptiste
name: Briand, Carine
name: Aicardi, Stéphane
Publisher: name: arXiv
Year: 2024
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Solar radio bursts are some of the brightest emissions at radio frequencies in the solar system. The emission mechanisms that generate these bursts offer a remote insight into physical processes in solar coronal plasma, while fine spectral features hint at its underlying turbulent nature. During radio noise storms many hundreds of solar radio bursts can occur over the course of a few hours. Identifying and classifying solar radio bursts is often done manually although a number of automatic algorithms have been produced for this purpose. The use of machine learning algorithms for image segmentation and classification is well established and has shown promising results in the case of identifying Type II and Type III solar radio bursts. Here we present the results of a convolutional neural network applied to dynamic spectra of NenuFAR solar observations. We highlight some initial success in segmenting radio bursts from the background spectra and outline the steps necessary for burst classification.
description: 11 pages, 4 figures, accepted for publication in PRE9 conference proceedings
title: Детская фразеография: псковская версия
Creators: name: Соловьева, Татьяна
Publisher: name: Новгородский государственный университет имени Ярослава Мудрого (НовГУ)
Year: 2021

description: Представлен обзор публикаций псковских ученых Е.И. Рогалёвой, Т.Г. Никитиной, которые квалифицируются как детская фразеография. Выделяются два блока работ. Первый – словари, адресованные школьникам 1–6 классов, отличительная особенность этих словарей – интертактивность, Показано, как игровая фразеографическая стратегия варьируется в зависимости от жанра словарного проекта: юмористический детектив, занимательные этимологические истории, квест. Приводятся примеры творческих заданий, помещенных в словарях. Раскрываются возможности использования словарей на уроках русского родного языка. Второй блок – научные статьи и монографии, в которых сформулированы теоретические положения, лежащие в основе репрезентации фразеологизмов для школьников. Выделяются основные направления исследований, обращается внимание на полемику псковских ученых с другими создателями словарей. Демонстрируется, как выработанная концепция детской фразеографии трансформируется на фоне изменений, происходящих в обществе и в школе. В заключение подчеркивается актуальность исследований псковских ученых в обновлении теоретической базы детской фразеографии.
Harmonic polylogarithms for massive Bhabha scattering
Creators: name: Czakon, M.
name: Gluza, J.
name: Riemann, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: One- and two-dimensional harmonic polylogarithms, HPLs and GPLs, appear in calculations of multi-loop integrals. We discuss them in the context of analytical solutions for two-loop master integrals in the case of massive Bhabha scattering in QED. For the GPLs we discuss analytical representations, conformal transformations, and also their transformations corresponding to relations between master integrals in the s- and t-channel.
description: 6 pages, latex, uses espcrc2.sty, contrib. to Proc. of X. Int. Workshop on Advanced Computing and Analysis Techniques in Physics Research (ACAT), May 22 - 27, 2005, DESY, Zeuthen, Germany, to appear in NIM
Rydberg atom-ion collisions in cold environments
Creators: name: Hirzler, Henrik
name: Pérez-Ríos, Jesús
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Low-energy collisions of Rydberg atom-ion systems are investigated theoretically. We present the parameter space associated with suitable approaches for the dynamics of Rydberg atom-ion collisions, i.e. quantum-, Langevin and classical exchange regimes, showing that for the lowest reachable temperatures a classical treatment is appropriate. A quasi-classical trajectory method is used to study charge exchange cross sections for Li$^*$-Li$^+$ and Li$^*$-Cs$^+$ at collision energies down to $1\,$K. For cold collisions we find the charge exchange cross section deviating from the $n^4$ geometric scaling. Furthermore, for low-energy collisions, we find both an influence of the ionic core-repulsion as well as variations for two different models used for describing the electron-core potential.
description: 7 pages, 7 figures
การส่งเสริมคุณลักษณะการคิดเชิงคณิตศาสตร์และการแก้ปัญหาสำหรับผู้เรียนด้วยวิธีการแบบเปิด
Creators: name: กัลยภัทร์ เฉลิมศรี
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: การส่งเสริมคุณลักษณะ
วิธีการแบบเปิด
การคิดเชิงคณิตศาสตร์
การแก้ปัญหา

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 468-482
Milliarcsecond N-Band Observations of the Nova RS Ophiuchi: First Science with the Keck Interferometer Nuller
Creators: name: Barry, R. K.
name: Danchi, W. C.
name: Traub, W. A.
name: Sokoloski, J. L.
name: Wisniewski, J. P.
name: Serabyn, E.
name: Kuchner, M. J.
name: Akeson, R.
name: Appleby, E.
name: Bell, J.
name: Booth, A.
name: Brandenburg, H.
name: Colavita, M.
name: Crawford, S.
name: Creech-Eakman, M.
name: Dahl, W.
name: Felizardo, C.
name: Garcia, J.
name: Gathright, J.
name: Greenhouse, M. A.
name: Herstein, J.
name: Hovland, E.
name: Hrynevych, M.
name: Koresko, C.
name: Ligon, R.
name: Mennesson, B.
name: Millan-Gabet, R.
name: Morrison, D.
name: Palmer, D.
name: Panteleeva, T.
name: Ragland, S.
name: Shao, M.
name: Smythe, R.
name: Summers, K.
name: Swain, M.
name: Tsubota, K.
name: Tyau, C.
name: Vasisht, G.
name: Wetherell, E.
name: Wizinowich, P.
name: Woillez, J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report observations of the nova RS Ophiuchi (RS Oph) using the Keck Interferometer Nuller (KIN), approximately 3.8 days following the most recent outburst that occurred on 2006 February 12. These observations represent the first scientific results from the KIN, which operates in N-band from 8 to 12.5 microns in a nulling mode. By fitting the unique KIN data, we have obtained an angular size of the mid-infrared continuum of 6.2, 4.0, or 5.4 mas for a disk profile, gaussian profile (FWHM), and shell profile respectively. The data show evidence of enhanced neutral atomic hydrogen emission and atomic metals including silicon located in the inner spatial regime near the white dwarf (WD) relative to the outer regime. There are also nebular emission lines and evidence of hot silicate dust in the outer spatial region, centered at ! 17 AU from the WD, that are not found in the inner regime. Our evidence suggests that these features have been excited by the nova flash in the outer spatial regime before the blast wave reached these regions. These identifications support a model in which the dust appears to be present between outbursts and is not created during the outburst event. We further discuss the present results in terms of a unifying model of the system that includes an increase in density in the plane of the orbit of the two stars created by a spiral shock wave caused by the motion of the stars through the cool wind of the red giant star. These data show the power and potential of the nulling technique which has been developed for the detection of Earth-like planets around nearby stars for the Terrestrial Planet Finder Mission and Darwin missions.
description: 41 pages, 10 figures
The Strengths of Near-Infrared Absorption Features Relevant to Interstellar and Planetary Ices
Creators: name: Gerakines, P. A.
name: Bray, J. J.
name: Davis, A.
name: Richey, C. R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The abundances of ices in planetary environments have historically been obtained through measurements of near-infrared absorption features (lambda = 1.0-2.5 microns), and near-IR transmission measurements of materials present in the interstellar medium are becoming more common. For transmission measurements, the band strength (or absorption intensity) of an absorption feature must be known in order to determine the column density of an ice component. In the experiments presented here, we have measured the band strengths of the near-IR absorption features for several molecules relevant to the study of interstellar icy grain mantles and icy planetary bodies: CO (carbon monoxide), CO2 (carbon dioxide), C3O2 (carbon suboxide), CH4 (methane), H2O (water), CH3OH (methanol), and NH3 (ammonia). During a vacuum deposition, the sizes of the near-IR features were correlated with that of a studied mid-IR feature whose strength is well known from previous ice studies. These data may be used to determine ice abundances from observed near-IR spectra of interstellar and planetary materials or to predict the sizes of near-IR features in spectral searches for these molecules in astrophysical environments.
description: 25 pages, 3 tables, 8 figures, to appear in ApJ 20 Feb 2005
Raychaudhuri equations, Tidal forces and Weak field Limit in Schwarzshild-Finsler-Randers spacetime
Creators: name: Triantafyllopoulos, A.
name: Kapsabelis, E.
name: Stavrinos, P. C.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this article, we study the form of deviation of geodesics (tidal forces) and Raychaudhuri equation in a Schwarzshild-Finsler-Randers (SFR) spacetime which has been investigated in previous papers. This model is obtained by considering the structure of a Lorentz tangent bundle of spacetime and in particular the kind of the curvatures in generalized metric spaces where there is more than one curvature tensor, such as Finsler-like spacetimes. In these cases, the concept of the Raychaudhuri equation is extended with extra terms and degrees of freedom from the dependence of internal variables as the velocity or an anisotropic vector field. Additionally, we investigate some consequences of the weak field limit on the spacetime under consideration and study the Newtonian limit equations which include a generalization of the Poisson equation.
description: 18 pages
ผลกระทบเชิงเศรษฐกิจต่อการยอมรับและปรับใช้เทคโนโลยีการมัดย้อมของกลุ่มคนยากจนผู้ผลิตผ้าทอมัดย้อม
Creators: name: วัลลภา พัฒนา
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: เทคโนโลยีการมัดย้อม
กลุ่มคนยากจน
ผู้ผลิตผ้ามัดย้อม
ผลกระทบเชิงเศรษฐกิจ

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 483-500
Deep Sketch-Based Modeling: Tips and Tricks
Creators: name: Zhong, Yue
name: Gryaditskaya, Yulia
name: Zhang, Honggang
name: Song, Yi-Zhe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Deep image-based modeling received lots of attention in recent years, yet the parallel problem of sketch-based modeling has only been briefly studied, often as a potential application. In this work, for the first time, we identify the main differences between sketch and image inputs: (i) style variance, (ii) imprecise perspective, and (iii) sparsity. We discuss why each of these differences can pose a challenge, and even make a certain class of image-based methods inapplicable. We study alternative solutions to address each of the difference. By doing so, we drive out a few important insights: (i) sparsity commonly results in an incorrect prediction of foreground versus background, (ii) diversity of human styles, if not taken into account, can lead to very poor generalization properties, and finally (iii) unless a dedicated sketching interface is used, one can not expect sketches to match a perspective of a fixed viewpoint. Finally, we compare a set of representative deep single-image modeling solutions and show how their performance can be improved to tackle sketch input by taking into consideration the identified critical differences.
การบริหารจัดการที่ดินสาธารณะประโยชน์แบบมีส่วนร่วมตำบลหนองสนิท อำเภอจอมพระ จังหวัดสุรินทร์
Creators: name: สิริพัฒถ์ ลาภจิตร
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: กลไกการบริหารจัดการ
ที่ดินสาธารณประโยชน์
การบริหารความร่วมมือ
ศักยภาพชุมชน

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 501-520
Measuring ultra-large scale effects in the presence of 21cm intensity mapping foregrounds
Creators: name: Fonseca, José
name: Liguori, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: \textsc{Hi} intensity mapping will provide maps of the large-scale distribution of neutral hydrogen (\textsc{Hi}) in the universe. These are prime candidates to be used to constrain primordial non-Gaussianity using the Large Scale Structure of the Universe as well as to provide further tests of Einstein's theory of Gravity (GR). But \textsc{Hi} maps are contaminated by foregrounds, which can be several orders of magnitude above the cosmological signal. Here we quantify how degenerated are the large-scale effects ($f_{\rm NL}$ and GR effects) with the residual foregrounds. We conclude that a joint analysis does not provide a catastrophic degradation of constraints and provides a framework to determine the marginal errors of large scale-effects in the presence of foregrounds. Similarly, we conclude that the macroscopical properties of the foregrounds can be measured with high precision. Notwithstanding, such results are highly dependent on accurate forward modelling of the foregrounds, which incorrectly done catastrophically bias the best fit values of cosmological parameters, foreground parameterisations, and large-scale effects.
description: 14 pages, 5 figures, 4 tables. Agrees with published version
The Schizophrenic Spectrum of LSR 1610-0040: a Peculiar M Dwarf/Subdwarf
Creators: name: Cushing, Michael C.
name: Vacca, William D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a moderate resolution (R=2000), 0.8-4.1 micron spectrum of LSR 1610-0040, a high proper motion star classified as an early-type L subdwarf by Lepine and collaborators based on its red-optical spectrum. The near-infrared spectrum of LSR 1610-0040 does not fit into the (tentative) M/L subdwarf sequence but rather exhibits a mix of characteristics found in the spectra of both M dwarfs and M subdwarfs. In particular, the near-infrared spectrum exhibits a Na I doublet and CO overtone bandheads in the K band, and Al I and K I lines and an FeH bandhead in the H band, all of which have strengths more typical of field M dwarfs. Furthermore the spectrum of Gl 406 (M6 V) provides a reasonably good match to the 0.6-4.1 micron spectral energy distribution of LSR 1610. Nevertheless the near-infrared spectrum of LSR 1610 also exhibits features common to the spectra of M subdwarfs including a strong Ti I multiplet centered at ~0.97 microns, a weak VO band at ~1.06 microns, and possible collision-induced H_2 absorption in the H and K bands. We discuss a number of possible explanations for the appearance of the red-optical and near-infrared spectrum of LSR 1610-0040. Although we are unable to definitively classify LSR 1610-0040, the preponderance of evidence suggests that it is a mildly metal-poor M dwarf. Finally, we tentatively identify a new band of TiO at ~0.93 microns in the spectra of M dwarfs.
description: Accepted for publication in the Astronomical Journal
การตรวจสอบแบบสามเส้าด้านนักวิจัย: กลยุทธ์เพื่อสร้างความเชื่อถือได้ในงานวิจัยเชิงคุณภาพ
Creators: name: นพพงศ์ เกิดเงิน
Publisher: name: สถาบันวิจัยและพัฒนา มหาวิทยาลัยราชภัฏนครราชสีมา
Year: 2567
Subjects: การวิจัยเชิงคุณภาพ
ความเชื่อถือได้ของการวิจัยเชิงคุณภาพ
การตรวจสอบแบบสามเส้า
การตรวจสอบแบบสามเส้าด้านนักวิจัย

description: วารสารชุมชนวิจัยและพัฒนาสังคม, 18, 3, 521-532
Disentangling homophily, community structure and triadic closure in networks
Creators: name: Peixoto, Tiago P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Physics and Society (physics.soc-ph)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Network homophily, the tendency of similar nodes to be connected, and transitivity, the tendency of two nodes being connected if they share a common neighbor, are conflated properties in network analysis, since one mechanism can drive the other. Here we present a generative model and corresponding inference procedure that are capable of distinguishing between both mechanisms. Our approach is based on a variation of the stochastic block model (SBM) with the addition of triadic closure edges, and its inference can identify the most plausible mechanism responsible for the existence of every edge in the network, in addition to the underlying community structure itself. We show how the method can evade the detection of spurious communities caused solely by the formation of triangles in the network, and how it can improve the performance of edge prediction when compared to the pure version of the SBM without triadic closure.
description: 23 pages, 10 figures
Kondo screening cloud and the charge staircase in one-dimensional mesoscopic devices
Creators: name: Pereira, Rodrigo G.
name: Laflorencie, Nicolas
name: Affleck, Ian
name: Halperin, Bertrand I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose that the finite size of the Kondo screening cloud, xi_K, can be probed by measuring the charge quantization in a one-dimensional system coupled to a small quantum dot. When the chemical potential, mu in the system is varied at zero temperature, one should observe charge steps whose locations are at values of mu that are controlled by the Kondo effect when the system size L is comparable to xi_K. We show that, if the standard Kondo model is used, the ratio between the widths of the Coulomb blockade valleys with odd or even number of electrons is a universal scaling function of xi_K/L. If we take into account electron-electron interactions in a single-channel wire, this ratio also depends on the parameters of the effective Luttinger model; in addition, the scaling is weakly violated by a marginal bulk interaction. For the geometry of a quantum dot embedded in a ring, we show that the dependence of the charge steps on a magnetic flux through the ring is controlled by the size of the Kondo screening cloud.
description: This is an extended version of cond-mat/0612635 with an analysis of bulk Luttinger liquid interactions added as well as a discussion of experimental possibilities
Nernst and Ettingshausen effects in the Laughlin geometry
Creators: name: Sharapov, S. G.
name: Varlamov, A. A.
name: Goupil, C.
name: Kavokin, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The ideal reversible thermodynamic cycle visualization of the Nernst effect in Laughlin geometry, excluding the kinetic contribution is proposed. The Ettingshausen effect is also treated in the fashion using the reverse cycle. The corresponding values of the off-diagonal thermoelectric coefficients are expressed through the ratio of the entropy budget per magnetic flux. Our approach enlightens the profound thermodynamic origin of the relation between the Nernst effect and magnetization currents.
description: 7 pages, 2 figures; final version published in PRR
Genome Wide Association Studies of Variant-by-Thiazide Interaction on Lipids Identifies a Novel Low-Density Lipoprotein Cholesterol Locus
Creators: name: Sitlani, C.M.
name: Whitsel, E.A.
name: Raffield, L.M.
name: Psaty, B.M.
name: Preuss, M.
name: Highland, H.M.
name: Lee, M.P.
name: Downie, C.G.
name: Avery, C.L.
name: Graff, M.
Publisher: name: Lippincott Williams and Wilkins
Year: 2022

description: Although thiazide diuretics are common therapies for the treatment of high blood pressure, they are also associated with elevated blood lipid concentrations after initiation. Total cholesterol concentrations have been shown to increase by 4%, low-density lipoprotein cholesterol (LDL-C) concentrations by 10%, and triglyceride (TG) concentrations by 5% to 15%; high density lipoprotein cholesterol concentrations remain unaffected. Pharmacogenomics could potentially help identify mechanistic pathways underlying this observation. However, few well-powered studies examining variant-by-thiazide interactions on blood lipid concentrations have been conducted. The purpose of this study was to identify genetic variants that modify the effect of thiazide diuretics on LDL-C, total cholesterol, and TG using data from the UK Biobank (UKBB), a publicly available, longitudinal study of UK adults.
"Sampai Merauke": the struggle for West New Guinea, 1960-62
Creators: name: Webster, David
Publisher: name: University of British Columbia
Year: 2009

description: This paper concerns the struggle among the Netherlands, Indonesia and indigenous Papuan nationalists for the territory variously named West New Guinea, West Irian and West Papua. It considers the clash of emergent Indonesian and West Papuan nationalist movements in the period leading up to 1962, when a United States-brokered agreement saw the territory pass from Dutch to United Nations administration as a transition stage to Indonesian rule. Indonesian nationalism found in the struggle for West Irian a new integrative focus based on the map of the old East Indies and bolstered by appeals to a modernized tradition. A similar process saw West Papuan nationalism coalesce around the map of the territory and was beginning to project itself into the past as well. Indonesian nationalism asserted a claim "from Sabang to Merauke" while West Papuan nationalists counter-claimed "from Sorong to Merauke." Both the Indonesian and West Papuan "nations of intent" were constructed in the international arena and shaped by the course of international relations. The eventual outcome of their diplomatic struggle was determined by the mental maps of policy makers in the United States, whose decisions were shaped by their need to "contain" communism.
КОРНЕВЫЕ ГНИЛИ И УРОЖАЙНОСТЬ ЯРОВОЙ ПШЕНИЦЫ В ПОЛЕВЫХ СЕВООБОРОТАХ В ЗАВИСИМОСТИ ОТ ПРЕДШЕСТВЕННИКОВ, ПРИЕМОВ ОБРАБОТКИ ПОЧВЫ И УДОБРЕНИЙ
Creators: name: Дятлова О. Г.
name: Зайцев А. М.
name: Разина А.А.
name: Солодун В. И.
Publisher: name: Земледелие
Year: 2021
Subjects: ЯРОВАЯ ПШЕНИЦА (TRITICUM AESTIVUM L.)
КОРНЕВЫЕ ГНИЛИ (ROOT ROT)
СЕВООБОРОТЫ
ПРЕДШЕСТВЕННИКИ
ПРИЕМЫ ОБРАБОТКИ ПОЧВЫ
ПОЛНОЕ МИНЕРАЛЬНОЕ УДОБРЕНИЕ
УРОЖАЙНОСТЬ
SPRING WHEAT (TRITICUM AESTIVUM L.)
ROOT ROT
CROP ROTATION
FORECROP
SOIL TILLAGE TECHNIQUES
FULL MINERAL FERTILIZER
PRODUCTIVITY

description: Исследования проводили с целью оценки влияния предшественников, приемов обработки почвы и удобрений на распространенность корневых гнилей и урожайность яровой пшеницы. Работу выполняли в 2017-2019 гг. в лесостепной зоне Иркутской области на серой лесной тяжелосуглинистой почве в многофакторном стационарном полевом опыте. Схема опыта предусматривала изучение трех предшественников (фактор А) - пар в трехпольном севообороте с 33 %-ным насыщением пшеницей (пар - пшеница -овес), горохо-овсяная смесь и кукуруза в четырехпольном севообороте с 50 %-ным насыщением пшеницей (горохо-овсяная смесь - пшеница - кукуруза - пшеница); двух приёмов основной обработки почвы (фактор В) - вспашка ПЛН-5-35 на глубину 20...22 см и дискование БДТ-3 на 12...14 см; двух фонов удобренности (фактор С) - без удобрений, N45P45K45. Доза удобрений рассчитана на формирование урожайности яровой пшеницы (с учетом содержания элементов питания в почве) по чистому пару 3,5 т/га, по кукурузе - 2,6 т/га, по однолетним травам - 2,2 т/га. Зараженность семян болезнями определяли по ГОСТ 1204493, учет корневых гнилей проводили в фазе всходов пшеницы. Метеоусловия в годы проведения исследований в первой половине вегетации были благоприятными для корневых гнилей. Оптимальный вариант, обеспечивающий снижение их распространенности в годы исследований - посев пшеницы по кукурузе с обработкой почвы дискованием и внесением N45P45K45: сокращение распространенности заболевания в 2018 г. составило 5,1 %, в 2019 г. - 37,3 %. Наибольшую урожайность яровой пшеницы обеспечивало возделывание культуры по пару с отвальной вспашкой и внесением N45P4K45, в 2018 г. она составила 2,21 т/га зерна, в 2019 г. - 3,31 т/га.
Magnetic Field Effects on Quasiparticles in Strongly Correlated Local Systems
Creators: name: Hewson, A. C.
name: Bauer, J.
name: Koller, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that quasiparticles in a magnetic field of arbitrary strength $H$ can be described by field dependent parameters. We illustrate this approach in the case of an Anderson impurity model and use the numerical renormalization group (NRG) to calculate the renormalized parameters for the levels with spin $σ$, $\tildeε_{\mathrm{d},σ}(H)$, resonance width $\tildeΔ(H)$ and the effective local quasiparticle interaction $\tilde U(H)$. In the Kondo or strong correlation limit of the model the progressive de-renormalization of the quasiparticles can be followed as the magnetic field is increased. The low temperature behaviour, including the conductivity, in arbitrary magnetic field can be calculated in terms of the field dependent parameters using the renormalized perturbation expansion. Using the NRG the field dependence of the spectral density on higher scales is also calculated.
description: 15 pages, 17 figures
Joule-Thomson expansion of higher dimensional nonlinearly charged AdS black hole in Einstein-PMI gravity
Creators: name: Feng, Zhong-Wen
name: Zhou, Xia
name: He, Guansheng
name: Zhou, Shi-Qi
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper, the Joule-Thomson expansion of the higher dimensional nonlinearly AdS black hole with power Maxwell invariant source is investigated. The results show the Joule-Thomson coefficient has a zero point and a divergent point, which are coincide with the inversion temperature $T_i$ and the zero point of Hawking temperature, respectively. The inversion temperature increases monotonously with inversion pressure. For high-pressure region, the inversion temperature decreases with the dimensionality $D$ and the nonlinearity parameter $s$, whereas it increases with the charge $Q$. However, $T_i$ for low-pressure region increase with $D$ and $s$, while it decreases with $Q$. The ratio ${η_{\rm{BH}}}$ between the minimum of inversion temperature and the critical temperature does not depend on $Q$, it recovers the higher dimensional Reissner-Nördstrom AdS black hole case when $s=1$. However, for $s>1$, it becomes smaller and smaller as $D$ increase and approaches a constant when $D\rightarrow\infty$. Finally, we found that increase of mass $M$ and $s$, or reduce the charge $Q$ and $D$ can enhance the isenthalpic curve, and the effect of $s$ on the isenthalpic curve is much greater than other parameters.
description: 8 pages, 4 figures. Accepted for publication in Communications in Theoretical Physics
ВЛИЯНИЕ ПРЕДШЕСТВЕННИКОВ И ПРИЕМОВ БИОЛОГИЗАЦИИ НА ПРОДУКТИВНОСТЬ СЕВООБОРОТОВ В УСЛОВИЯХ НИЖНЕГО ПОВОЛЖЬЯ
Creators: name: СЕМИНЧЕНКО Е.В.
Publisher: name: Земледелие
Year: 2021
Subjects: ОРГАНИЧЕСКОЕ ВЕЩЕСТВО
УРОЖАЙНОСТЬ
ПРЕДШЕСТВЕННИКИ
ПРИЕМЫ БИОЛОГИЗАЦИИ
ПЛОДОРОДИЕ ПОЧВЫ
ORGANIC MATTER
PRODUCTIVITY
FORECROPS
METHODS OF BIOLOGIZATION
SOIL FERTILITY

description: Исследования проводили с целью определения лучших предшественников озимой пшеницы, ярового ячменя и нута, а также оценки эффективности биологизированных приемов, повышающих плодородие почв в органическом земледелии Нижнего Поволжья. Работа выполнена в 2017-2019 гг. Почва опытного участка - светло-каштановая, тяжелосуглинистая, с содержанием гумуса в пахотном слое 1,74 %. Запас продуктивной влаги в слое почвы 0...0,3 м в посевах озимой пшеницы варьировал в зависимости от погодных условий и приемов биологизации от 4,1 до 29,5 мм, нута - от 28,1 до 32,7 мм, ярового ячменя - от 28,0 до 35,3 мм. Положительный баланс органического вещества наблюдали во всех вариантах опыта, кроме контрольного. Самая высокая величина этого показателя (+4,05 т/га) отмечена у озимой пшеницы по фацелии на сидератв семипольном биологизированном севообороте. Немного ниже она была при выращивании этой же культуры по доннику на сидерат в пятипольном севообороте (+3,5 т/га), а самой низкой - после нута (0,56.0,59 т/га в зависимости от предшественника). В среднем за три года самый высокий сбор зерна озимой пшеницы отмечен по предшественнику чистый пар (контроль). Его замена сидеральными парами приводила к снижению (в большинстве случае достоверному) урожайности культуры. По мере удаления от парового поля влияние чистого пара на запасы влаги снижалось, в результате наибольшую урожайность нута и ярового ячменя отмечали в пятипольном сидеральном биологизированном зернопаровом севообороте. Она была выше, чем в контроле, соответственно на 0,38 и 0,45 т/га. Выявленадостоверная корреляционная связь между факторами урожайность - осадки (R = +0,88...+0,95); урожайность - температура (R = +0,883...+0,94); урожайность - содержание азота (R=+0,373...+0,754); урожайность - содержание фосфора (R=+0,360... +0,834); урожайность - содержание калия (R=+0,516...+0,981).
ВЛИЯНИЕ БИОЛОГИЗАЦИИ ЗЕМЛЕДЕЛИЯ НА ПЛОДОРОДИЕ ПОЧВ И ПРОДУКТИВНОСТЬ АГРОЦЕНОЗОВ(НА ПРИМЕРЕ БЕЛГОРОДСКОЙ ОБЛАСТИ)
Creators: name: ЛУКИН С. В.
Publisher: name: Земледелие
Year: 2021
Subjects: АГРОЦЕНОЗ
БИОЛОГИЧЕСКИЙ АЗОТ
ИЗВЕСТКОВАНИЕ
ПЕСТИЦИДЫ
СИДЕРАТЫ
УДОБРЕНИЯ
ЭРОЗИЯ ПОЧВ
AGROCENOSIS
BIOLOGICAL NITROGEN
LIMING
PESTICIDES
GREEN MANURE CROPS
FERTILIZERS
SOIL EROSION

description: В работе обобщен и проанализирован обширный материал, характеризующий итоги реализации программы биологизации земледелия в Белгородской области. Преобладающие пахотные почвы в лесостепной зоне региона - чернозёмы типичные (44,8 % от общей площади пашни в области) и выщелоченные (25,7 %), в степной - чернозёмы обыкновенные (13,0 %). Общая посевная площадь в среднем за 2008-2010 гг. составляла 1337,7 тыс. га в год, в 2011-2013 гг. - 1390 тыс. га, 2014-2016гг. - 1433,9 тыс. га, 2017-2019 гг. - 1423,8 тыс. га в год. За период с 2008 по 2019 гг. существенно повысилось плодородие и продуктивность почв. В среднем за 2017-2019 гг. внесение минеральных удобрений стабилизировалось на уровне 107.2 кг. д.в./га, органических - увеличилось до 9,25 т/га, площадь известкования кислых почв составила 65,7 тыс. га в год. Площадь посева сидератов возросла до 290.3 тыс. га в год, а чистых паров сократилась до 66,5 тыс. га в год. Доля бобовых культур в структуре посевных площадей достигла 26,4 %, а накопление симбиотически связанного азота увеличилось в среднем до 23,7 кг/га. По состоянию на 01.01.2020 в пахотных почвах области отмечено максимальное за всю историю наблюдений средневзвешенное содержание органического вещества - 5,89 %, подвижных форм фосфора и калия - 144 и 171 мг/кг. Доля кислых почв снизилась на 11.3 % до 32,7 %. Существенно выросла урожайность основных сельскохозяйственных культур, в результате чего средняя продуктивность агроценозов достигла максимального значения - 4,94 тыс. корм. ед. с 1 га посевной площади.
UHECR mass composition at highest energies from anisotropy of their arrival directions
Creators: name: Kuznetsov, M. Yu.
name: Tinyakov, P. G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We propose a new method for the estimation of ultra-high energy cosmic ray (UHECR) mass composition from a distribution of their arrival directions. The method employs a test statistic (TS) based on a characteristic deflection of UHECR events with respect to the distribution of luminous matter in the local Universe. Making realistic simulations of the mock UHECR sets, we show that this TS is robust to the presence of galactic and non-extreme extra-galactic magnetic fields and sensitive to the mass composition of events in a set. This allows one to constrain the UHECR mass composition by comparing the TS distribution of a composition model in question with the data TS, and to discriminate between different composition models. While the statistical power of the method depends somewhat on the MF parameters, this dependence decreases with the growth of statistics. The method shows good performance even at GZK energies where the estimation of UHCER mass composition with traditional methods is complicated by a low statistics.
description: 26 pages, 9 figures, journal version, uncertainties discussion (EGMF, sources density) expanded significantly