cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Minute-cadence Observations of the LAMOST Fields with the TMTS: I. Methodology of Detecting Short-period Variables and Results from the first-year Survey
Creators: name: Lin, Jie
name: Wang, Xiaofeng
name: Mo, Jun
name: Xi, Gaobo
name: Zhang, Jicheng
name: Jiang, Xiaojun
name: Shi, Jianrong
name: Zhang, Xiaobin
name: Zhang, Xiaoming
name: Wei, Zixuan
name: Ye, Limeng
name: Wu, Chengyuan
name: Yan, Shengyu
name: Chen, Zhihao
name: Li, Wenxiong
name: Li, Xue
name: Lin, Weili
name: Lin, Han
name: Sai, Hanna
name: Xiang, Danfeng
name: Zhang, Xinghan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Tsinghua University-Ma Huateng Telescopes for Survey (TMTS), located at Xinglong Station of NAOC, has a field of view upto 18 deg^2. The TMTS has started to monitor the LAMOST sky areas since 2020, with the uninterrupted observations lasting for about 6 hours on average for each sky area and a cadence of about 1 minute. Here we introduce the data analysis and preliminary scientific results for the first-year observations, which covered 188 LAMOST plates ( about 1970 deg^2). These observations have generated over 4.9 million uninterrupted light curves, with at least 100 epochs for each of them. These light curves correspond to 4.26 million Gaia-DR2 sources, among which 285 thousand sources are found to have multi-epoch spectra from the LAMOST. By analysing these light curves with the Lomb-Scargle periodograms, we identify more than 3700 periodic variable star candidates with periods below 7.5 hours, primarily consisting of eclipsing binaries and Delta Scuti stars. Those short-period binaries will provide important constraints on theories of binary evolution and possible sources for space gravitational wave experiments in the future. Moreover, we also identified 42 flare stars by searching rapidly-evolving signals in the light curves. The densely-sampled light curves from the TMTS allow us to better quantify the shapes and durations for these flares.
description: 16 pages, 20 figures, accepted for publication in MNRAS
Observation of Anomalous Spin Segregation in a Trapped Fermi Gas
Creators: name: Du, X.
name: Luo, L.
name: Clancy, B.
name: Thomas, J. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report the observation of spin segregation, i.e., separation of spin density profiles, in a trapped ultracold Fermi gas of $^6$Li with a magnetically tunable scattering length close to zero. The roles of the spin components are inverted when the sign of the scattering length is reversed. The observed density profiles are in qualitative agreement with the spin-wave theory applied previously to explain spin segregation in a Bose gas, but disagree in amplitude by two orders of magnitude. The observed atomic density profiles are far from equilibrium, yet they persist for $\simeq$ 5 seconds in a trap with an axial frequency of $\simeq$ 150 Hz. We attribute this long lifetime to Fermi statistics: The scattering amplitude is nonzero only for atoms in opposite states, and vanishes for atoms in the same state. By measuring the magnetic field at which spin segregation ceases, we precisely determine the zero crossing in the scattering length of $^6$Li as $527.5\pm0.2$ G.
description: 4 pages, 3 figures
Effective superpotentials for compact D5-brane Calabi-Yau geometries
Creators: name: Jockers, Hans
name: Soroush, Masoud
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For compact Calabi-Yau geometries with D5-branes we study N=1 effective superpotentials depending on both open- and closed-string fields. We develop methods to derive the open/closed Picard-Fuchs differential equations, which control D5-brane deformations as well as complex structure deformations of the compact Calabi-Yau space. Their solutions encode the flat open/closed coordinates and the effective superpotential. For two explicit examples of compact D5-brane Calabi-Yau hypersurface geometries we apply our techniques and express the calculated superpotentials in terms of flat open/closed coordinates. By evaluating these superpotentials at their critical points we reproduce the domain wall tensions that have recently appeared in the literature. Finally we extract orbifold disk invariants from the superpotentials, which, up to overall numerical normalizations, correspond to orbifold disk Gromov-Witten invariants in the mirror geometry.
description: 55 pages; v2: references added, typos corrected
Signature and escape of highly fractionated plasma in an active region
Creators: name: Brooks, David H.
name: Yardley, Stephanie L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Accurate forecasting of space weather requires knowledge of the source regions where solar energetic particles (SEP) and eruptive events originate. Recent work has linked several major SEP events in 2014, January, to specific features in the host active region (AR 11944). In particular, plasma composition measurements in and around the footpoints of hot, coronal loops in the core of the active region were able to explain the values later measured in-situ by the Wind spacecraft. Due to important differences in elemental composition between SEPs and the solar wind, the magnitude of the Si/S elemental abundance ratio emerged as a key diagnostic of SEP seed population and solar wind source locations. We seek to understand if the results are typical of other active regions, even if they are not solar wind sources or SEP productive. In this paper, we use a novel composition analysis technique, together with an evolutionary magnetic field model, in a new approach to investigate a typical solar active region (AR 11150), and identify the locations of highly fractionated (high Si/S abundance ratio) plasma. Material confined near the footpoints of coronal loops, as in AR 11944, that in this case have expanded to the AR periphery, show the signature, and can be released from magnetic field opened by reconnection at the AR boundary. Since the fundamental characteristics of closed field loops being opened at the AR boundary is typical of active regions, this process is likely to be general.
description: To be published in MNRAS: https://academic.oup.com/mnras/advance-article-abstract/doi/10.1093/mnras/stab2681/6373479
An Engineering Feasibility Study of Lam Chi Long Small Hydropower Project
Creators: name: Winai Sri-Amporn
name: Chattichai Waisurasingha
name: Sakondiat Kaweepitchapatchara
name: Suriya Ponpoon
Publisher: name: Faculty of Engineering, Khon Kaen Univeristy
Year: 2012
Subjects: Hydropower plant, small power plant,run-of-river hydropower plant, Chi Long hydropower project, Chi basin

description: 2, 39, KKU Engineering Journal
title: Методы и средства измерений, испытаний и контроля машиностроительных предприятий
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2024

description: В учебнике подробно изложены основные понятия, современные методы и средства, применяемые при измерении, испытаниях и контроле продукции, приведены примеры. В первой главе подробно рассмотрены измерения, методы и средства измерений, виды физических величин и единиц, основные понятия метрологии, методы измерения, методика измерений, измерительные приборы и системы. Во второй главе рассмотрены методы и средства испытаний. Приведены основные определения, дана классификация испытаний, методы испытаний для различных видов воздействия, проанализированы основные вопросы аттестации испытательного оборудования. Третья глава посвящена современным методам и средствам контроля и видам контроля. В четвертой главе уделено внимание процессу сертификации продукции, показаны схемы сертификации, рассмотрены особенности сертификации продукции машиностроения. Пятая глава посвящена управлению качеством продукции. Подготовлен с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначен для студентов, обучающихся по укрупненной группе специальностей и направлений подготовки высшего образования «Управление в технических системах», изучающих дисциплину «Методы и средства измерений и контроля качества продукции».
การประเมินการแพร่กระจายยีนของเต็ง (Dipterocarpaceae) พืชดัชนีสาคัญในป่าเต็งรัง (Estimation of Gene Flow of  Shorea obtusa  (Dipterocarpaceae), a Plant Keystone
Species in Deciduous Dipterocarp Forest)
Creators: name: ชฎาพร เสนาคุณ
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: microsatellite, gene flow, genetic relatedness, deciduous dipterocarp forest, Thailand

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
A Domain Gap Aware Generative Adversarial Network for Multi-domain Image Translation
Creators: name: Xu, Wenju
name: Wang, Guanghui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Recent image-to-image translation models have shown great success in mapping local textures between two domains. Existing approaches rely on a cycle-consistency constraint that supervises the generators to learn an inverse mapping. However, learning the inverse mapping introduces extra trainable parameters and it is unable to learn the inverse mapping for some domains. As a result, they are ineffective in the scenarios where (i) multiple visual image domains are involved; (ii) both structure and texture transformations are required; and (iii) semantic consistency is preserved. To solve these challenges, the paper proposes a unified model to translate images across multiple domains with significant domain gaps. Unlike previous models that constrain the generators with the ubiquitous cycle-consistency constraint to achieve the content similarity, the proposed model employs a perceptual self-regularization constraint. With a single unified generator, the model can maintain consistency over the global shapes as well as the local texture information across multiple domains. Extensive qualitative and quantitative evaluations demonstrate the effectiveness and superior performance over state-of-the-art models. It is more effective in representing shape deformation in challenging mappings with significant dataset variation across multiple domains.
PELATIHAN TATA KELOLA JURNAL MENGGUNAKAN OJS 3
Creators: name: Lubis, Azhar Aziz
Publisher: name: Zenodo
Year: 2022
Subjects: OJS3

description: Salindia ini disampaikan secara luring pada kegiatan Pelatihan Tata Kelola Jurnal berbasis OJS 3 bagi Pengelola Jurnal di Universitas Bengkulu pada tanggal 10-11 Maret 2022.
Weakly and almost weakly stable C_0-semigroups
Creators: name: Eisner, Tanja
name: Farkas, Balint
name: Nagel, Rainer
name: Sereny, Andras
Publisher: name: arXiv
Year: 2008
Subjects: subject: Functional Analysis (math.FA)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 47D06, 37A25

description: In this paper we survey results concerning the asymptotic properties of C_0-semigroups on Banach spaces with respect to the weak operator topology. The property "no eigenvalues of the generator on the imaginary axis" is equivalent to weak stability for most time values; a phenomenon called "almost weak stability". Further, sufficient conditions actually implying weak stability are also given. By several examples we explain weak and almost weak stability and illustrate the fundamental difference between them. Many historical and bibliographical remarks position the material in the literature. We conclude the paper with some open questions and comments.
description: 22 pages; survey article
Experimental mathematics on the magnetic susceptibility of the square lattice Ising model
Creators: name: Boukraa, S.
name: Guttmann, A. J.
name: Hassani, S.
name: Jensen, I.
name: Maillard, J. -M.
name: Nickel, B.
name: Zenine, N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 34M55, 47E05, 81Qxx, 32G34, 34Lxx, 34Mxx, 14Kxx

description: We calculate very long low- and high-temperature series for the susceptibility $χ$ of the square lattice Ising model as well as very long series for the five-particle contribution $χ^{(5)}$ and six-particle contribution $χ^{(6)}$. These calculations have been made possible by the use of highly optimized polynomial time modular algorithms and a total of more than 150000 CPU hours on computer clusters. For $χ^{(5)}$ 10000 terms of the series are calculated {\it modulo} a single prime, and have been used to find the linear ODE satisfied by $χ^{(5)}$ {\it modulo} a prime. A diff-Padé analysis of 2000 terms series for $χ^{(5)}$ and $χ^{(6)}$ confirms to a very high degree of confidence previous conjectures about the location and strength of the singularities of the $n$-particle components of the susceptibility, up to a small set of ``additional'' singularities. We find the presence of singularities at $w=1/2$ for the linear ODE of $χ^{(5)}$, and $w^2= 1/8$ for the ODE of $χ^{(6)}$, which are {\it not} singularities of the ``physical'' $χ^{(5)}$ and $χ^{(6)},$ that is to say the series-solutions of the ODE's which are analytic at $w =0$. Furthermore, analysis of the long series for $χ^{(5)}$ (and $χ^{(6)}$) combined with the corresponding long series for the full susceptibility $χ$ yields previously conjectured singularities in some $χ^{(n)}$, $n \ge 7$. We also present a mechanism of resummation of the logarithmic singularities of the $χ^{(n)}$ leading to the known power-law critical behaviour occurring in the full $χ$, and perform a power spectrum analysis giving strong arguments in favor of the existence of a natural boundary for the full susceptibility $χ$.
description: 54 pages, 2 figures
DualVGR: A Dual-Visual Graph Reasoning Unit for Video Question Answering
Creators: name: Wang, Jianyu
name: Bao, Bing-Kun
name: Xu, Changsheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Multimedia (cs.MM)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Video question answering is a challenging task, which requires agents to be able to understand rich video contents and perform spatial-temporal reasoning. However, existing graph-based methods fail to perform multi-step reasoning well, neglecting two properties of VideoQA: (1) Even for the same video, different questions may require different amount of video clips or objects to infer the answer with relational reasoning; (2) During reasoning, appearance and motion features have complicated interdependence which are correlated and complementary to each other. Based on these observations, we propose a Dual-Visual Graph Reasoning Unit (DualVGR) which reasons over videos in an end-to-end fashion. The first contribution of our DualVGR is the design of an explainable Query Punishment Module, which can filter out irrelevant visual features through multiple cycles of reasoning. The second contribution is the proposed Video-based Multi-view Graph Attention Network, which captures the relations between appearance and motion features. Our DualVGR network achieves state-of-the-art performance on the benchmark MSVD-QA and SVQA datasets, and demonstrates competitive results on benchmark MSRVTT-QA datasets. Our code is available at https://github.com/MMIR/DualVGR-VideoQA.
description: 12 pages, 12 figures
Stellar Rotation in M35: Mass-Period Relations, Spin-Down Rates, and Gyrochronology
Creators: name: Meibom, Søren
name: Mathieu, Robert D.
name: Stassun, Keivan G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a 5 month photometric time-series survey for stellar rotation over a 40'x40' field on the 150 Myr open cluster M35. We report rotation periods for 441 stars and determine their cluster membership and binarity based on a decade-long radial-velocity survey, proper-motion measurements, and multi-band photometric observations. We find that 310 of the stars with measured rotation periods are late-type members of M35. Their distribution of rotation periods span more than two orders of magnitude from ~0.1-15 days, not constrained by the sampling frequency and the time-span of the survey. With an age between the zero-age main-sequence and the Hyades, and with ~6 times more rotation periods than measured in the Pleiades, M35 permit detailed studies of early rotational evolution of late-type stars. Nearly 80% of the 310 rotators lie on two distinct sequences in the color-period plane, defining clear relations between stellar rotation period and color (mass). The M35 color-period diagram enables us to determine timescales for the transition between the two rotational states for G and K dwarfs, respectively. These timescales are inversely related to the mass of the convective envelope, and offer constraints on the rates of internal and external angular momentum transport and of the evolution of stellar dynamos. A comparison to the Hyades, confirm the Skumanich (1972) spindown-dependence for G dwarfs on one rotational state, but suggest that K dwarfs spin down more slowly. The locations of the rotational sequences in the M35 color-period diagram support the use of rotational isochrones to determine ages for coeval stellar populations. We use such gyrochronology to determine "gyro-ages" for M35. We use the M35 data to evaluate new color dependencies for the rotational isochrones.
description: 73 pages, 16 figures, Accepted for publication in ApJ. Replacement reflect minor changes suggested by referee
Tensorial hydrodynamic slip
Creators: name: Bazant, Martin Z.
name: Vinogradova, Olga I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We describe a tensorial generalization of the Navier slip boundary condition and illustrate its use in solving for flows around anisotropic textured surfaces. Tensorial slip can be derived from molecular or microstructural theories or simply postulated as an constitutive relation, subject to certain general constraints on the interfacial mobility. The power of the tensor formalism is to capture complicated effects of surface anisotropy, while preserving a simple fluid domain. This is demonstrated by exact solutions for laminar shear flow and pressure-driven flow between parallel plates of arbitrary and different textures. From such solutions, the effects of rotating a texture follow from simple matrix algebra. Our results may be useful to extracting local slip tensors from global measurements, such as the permeability of a textured channel or the force required to move a patterned surface, in experiments or simulations.
description: 10 pages
Global Context Enhanced Graph Neural Networks for Session-based Recommendation
Creators: name: Wang, Ziyang
name: Wei, Wei
name: Cong, Gao
name: Li, Xiao-Li
name: Mao, Xian-Ling
name: Qiu, Minghui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Session-based recommendation (SBR) is a challenging task, which aims at recommending items based on anonymous behavior sequences. Almost all the existing solutions for SBR model user preference only based on the current session without exploiting the other sessions, which may contain both relevant and irrelevant item-transitions to the current session. This paper proposes a novel approach, called Global Context Enhanced Graph Neural Networks (GCE-GNN) to exploit item transitions over all sessions in a more subtle manner for better inferring the user preference of the current session. Specifically, GCE-GNN learns two levels of item embeddings from session graph and global graph, respectively: (i) Session graph, which is to learn the session-level item embedding by modeling pairwise item-transitions within the current session; and (ii) Global graph, which is to learn the global-level item embedding by modeling pairwise item-transitions over all sessions. In GCE-GNN, we propose a novel global-level item representation learning layer, which employs a session-aware attention mechanism to recursively incorporate the neighbors' embeddings of each node on the global graph. We also design a session-level item representation learning layer, which employs a GNN on the session graph to learn session-level item embeddings within the current session. Moreover, GCE-GNN aggregates the learnt item representations in the two levels with a soft attention mechanism. Experiments on three benchmark datasets demonstrate that GCE-GNN outperforms the state-of-the-art methods consistently.
description: arXiv admin note: substantial text overlap with arXiv:2011.10173
title: The Changing Tides of Data Protection Regulation and Enforcement in Europe
Creators: name: Daigle, Brian
name: Khan, Mahnaz
Publisher: name: United States International Trade Commission
publisherIdentifier: https://ror.org/05hsggr76
publisherIdentifierScheme: ROR
Year: 2022

description: The European Union’s General Data Protection Regulation (GDPR) is a comprehensive data protection and
privacy framework implemented in May 2018. This paper analyzes the change in enforcement trends
during the period from May 2018 to December 2021 across the European Union and within seven
countries that are the largest EU GDPR enforcers: United Kingdom, France, Germany, Italy, Ireland,
Luxembourg, and Spain. It examines GDPR enforcement trends from three different perspectives: 1.) the
value, quantity, and severity of GDPR-related fines both across Europe and within each country, 2.) the
GDPR provisions most frequently invoked when an EU data protection authority imposes a fine for noncompliance, and 3.) the sectors most heavily impacted for GDPR non-compliance. Using data from over
900 fines issued to date, several trends have recently emerged: the European Union has accelerated the
issuance of fines, evidenced by the fact that the value of GDPR fines have quadrupled in the last year
relative to the previous two years (totaling €1.32 billion to date). Further, countries that were previously
less active in issuing fines initially, such as Ireland and Luxembourg, are now the forerunners in issuing
substantial fines for GDPR non-compliance. Conversely, the United Kingdom, once the leader in issuing
the largest fines across Europe, has declined in its issuance of fines for non-compliance relative to other
major regulatory authorities. This paper also notes the impact the EU GDPR continues to have on U.S
headquartered firms, particularly in the technology sector. In addition, certain EU members such as
Germany, France, and Ireland have also branched out enforcement during this period to focus on large
domestic firms or certain industry sectors such as e-commerce/retail, telecom services, medical services,
and even government agencies.
title: Система менеджмента качества машиностроительных предприятий
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2024

description: В учебнике подробно изложены основные понятия, современные методы и средства, применяемые при проектировании и управлении качеством машиностроительных предприятий, приведены примеры. В первой главе рассмотрены системы качества и их роль в реализации политики товаров и услуг. Во второй главе проведен подробный анализ требований ГОСТ международной системы менеджмента качества. В третьей главе рассмотрены семь современных инструментов качества, применяемых на предприятиях машиностроения, а в четвертой — метод анализа видов и последствий потенциальных дефектов. Глава пятая посвящена основным требованиям к формированию комплексных критериев оценки систем управления качеством. Шестая глава посвящена задачам и функциям нормирования критериев систем управления качеством. Рассмотрены основные принципы нормирования, проведен анализ основных методов оценки систем управления качеством. Подготовлен с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначен для студентов, обучающихся по укрупненным группам специальностей и направлений подготовки высшего образования «Машиностроение», «Управление в технических системах», изучающих дисциплину «Система менеджмента качества машиностроительных предприятий».
Young energetic PSR J1617-5055, its underluminous nebula and unidentified TeV source HESS J1616-508
Creators: name: Kargaltsev, O.
name: Pavlov, G. G.
name: Wong, J. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed the young energetic pulsar J1617-5055 with the Chandra ACIS detector for 60 ks. In addition to the pulsar, the X-ray images show a faint pulsar-wind nebula (PWN) seen up to ~1' from the pulsar. Deconvolution and reconstruction of the image reveal a brighter compact PWN component of ~1'' size, possibly with a jet-torus morphology. The PWN spectrum fits an absorbed power-law (PL) model with the photon index Gamma=1.5. The total PWN luminosity in the 0.5-8 keV band, L_{pwn}=3.2\times10^{33} ergs s^{-1} for d=6.5 kpc, is a fraction of 2\times 10^{-4} of the pulsar's spin-down power and a fraction of 0.2 of the pulsar's X-ray luminosity, which is a factor of 20 lower than one would expect from an average empirical relation found for a sample of PWNe observed with Chandra. The pulsar's spectrum can be described by an absorbed PL with n_{H}=3.5\times10^{22} cm^{-2} and Gamma=1.1, harder than any other pulsar spectrum reliably measured in the soft X-ray band. This non-thermal emission is 50% pulsed showing one peak per period. We have also investigated a possible connection between J1617 and the extended TeV source HESS J1616-508 whose center is located about 10' west of the pulsar. We find no preferential extension of the X-ray PWN toward the TeV source. Therefore, the Chandra data do not provide conclusive evidence for PSR J1617-5055 and HESS J1616-508 association. We have also analyzed archival X-ray, radio, and IR data on the HESS J1616-508 region and found traces of diffuse emission (resembling a shell in the radio) coinciding with the central part of HESS J1616-508. We speculate that the TeV source may be multiple, with most of the emission coming from an unknown SNR or a star-forming region, while some fraction of the TeV emission still may be attributed to the J1617 PWN.
description: 11 pages, 10 figures and 3 tables, submitted to ApJ
Dynamics of k-core percolation in a random graph
Creators: name: Iwata, Mami
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the edge deletion process of random graphs near a k-core percolation point. We find that the time-dependent number of edges in the process exhibits critically divergent fluctuations. We first show theoretically that the k-core percolation point is exactly given as the saddle-node bifurcation point in a dynamical system. We then determine all the exponents for the divergence based on a universal description of fluctuations near the saddle-node bifurcation.
description: 16 pages, 4 figures
Diagnostic capabilities of spectropolarimetric observations for understanding solar phenomena I. Zeeman-sensitive photospheric lines
Creators: name: Noda, C. Quintero
name: Barklem, P. S.
name: Gafeira, R.
name: Cobo, B. Ruiz
name: Collados, M.
name: Carlsson, M.
name: Pillet, V. Martínez
name: Suárez, D. Orozco
name: Uitenbroek, H.
name: Katsukawa, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Future ground-based telescopes will expand our capabilities for simultaneous multi-line polarimetric observations in a wide range of wavelengths, from the near-ultraviolet to the near-infrared. This creates a strong demand to compare candidate spectral lines to establish a guideline of the lines that are most appropriate for each observation target. We focused in this first work on Zeeman-sensitive photospheric lines in the visible and infrared. We first examined their polarisation signals and response functions using a 1D semi-empirical atmosphere. Then we studied the spatial distribution of the line core intensity and linear and circular polarisation signals using a realistic 3D numerical simulation. We ran inversions of synthetic profiles, and we compared the heights at which we obtain a high correlation between the input and the inferred atmosphere. We also used this opportunity to revisit the atomic information we have on these lines and computed the broadening cross-sections due to collisions with neutral hydrogen atoms for all the studied spectral lines. The results reveal that four spectral lines stand out from the rest for quiet-Sun and network conditions: Fe I 5250.2, 6302, 8468, and 15648 A. The first three form higher in the atmosphere, and the last line is mainly sensitive to the atmospheric parameters at the bottom of the photosphere. However, as they reach different heights, we strongly recommend using at least one of the first three candidates together with the Fe I 15648 A line to optimise our capabilities for inferring the thermal and magnetic properties of the lower atmosphere.
description: 15 pages, 12 figures, regular publication
title: Менеджмент качества машиностроительных предприятий
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2025

description: В учебнике рассматриваются методы и средства, применяемые при проектировании и управлении качеством машиностроительных предприятий, приведены примеры. Показаны системы качества и их роль в реализации политики товаров и услуг, проведен подробный анализ требований ГОСТ международной системы менеджмента качества, метод анализа видов и последствий потенциальных дефектов. Описаны основные требования к формированию комплексных критериев оценки систем управления качеством, принципы нормирования. Подготовлен с учетом требований Федерального государственного образовательного стандарта среднего профессионального образования. Предназначен для студентов, обучающихся по укрупненной группе профессий и специальностей «Машиностроение»», изучающих дисциплины «Менеджмент», «Менеджмент качества».
title: Метрология, стандартизация и сертификация в машиностроении
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2025

description: В учебном пособии рассмотрены современные методы и средства, применяемые при измерении, испытаниях и контроле продукции, виды физических величин и единиц, основные понятия метрологии, методы измерения, методика измерений, измерительные приборы и системы. Приведены основные определения, дана классификация испытаний, методы испытаний для различных видов воздействия, проанализированы основные вопросы аттестации испытательного оборудования. Уделено внимание процессу сертификации продукции, показаны схемы сертификации, рассмотрены особенности сертификации продукции машиностроения. Подготовлено с учетом требований Федерального государственного образовательного стандарта среднего профессионального образования. Предназначено для студентов, обучающихся по укрупненной группе профессий и специальностей «Машиностроение», изучающих дисциплину «Метрология, стандартизация и сертификация».
Coexistence of magnetic fluctuations and superconductivity in the pnictide high temperature superconductor SmFeAsO$_{1-x}$F$_{x}$ measured by muon spin rotation
Creators: name: Drew, A. J.
name: Pratt, F. L.
name: Lancaster, T.
name: Blundell, S. J.
name: Baker, P. J.
name: Liu, R. H.
name: Wu, G.
name: Chen, X. H.
name: Watanabe, I.
name: Malik, V. K.
name: Dubroka, A.
name: Kim, K. W.
name: Roessle, M.
name: Bernhard, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Muon-spin rotation experiments were performed on the pnictide high temperature superconductor SmFeAsO$_{1-x}$F$_{x}$ with x=0.18 and 0.3. We observed an unusual enhancement of slow spin fluctuations in the vicinity of the superconducting which suggests that the spin fluctuations contribute to the formation of an unconventional superconducting state. An estimate of the in-plane penetration depth $λ_{ab}(0)=190(5)$\thinspace nm was obtained, which confirms that the pnictide superconductors obey an Uemura-style relationship between $T_{\mathrm{c}}$ and $λ_{ab}(0)^{-2}$.
description: To appear in Physical Review Letters. Changes to title, figures 1 and 4, references and (minor changes to) the text
Finite-key Analysis for Quantum Conference Key Agreement with Asymmetric Channels
Creators: name: Li, Zhao
name: Cao, Xiao-Yu
name: Li, Chen-Long
name: Weng, Chen-Xun
name: Gu, Jie
name: Yin, Hua-Lei
name: Chen, Zeng-Bing
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Cryptography and Security (cs.CR)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: As an essential ingredient of quantum networks, quantum conference key agreement (QCKA) provides unconditional secret keys among multiple parties, which enables only legitimate users to decrypt the encrypted message. Recently, some QCKA protocols employing twin-field was proposed to promote transmission distance. These protocols, however, suffer from relatively low conference key rate and short transmission distance over asymmetric channels, which demands a prompt solution in practice. Here, we consider a tripartite QCKA protocol utilizing the idea of sending-or-not-sending twin-field scheme and propose a high-efficiency QCKA over asymmetric channels by removing the symmetry parameters condition. Besides, we provide a composable finite-key analysis with rigorous security proof against general attacks by exploiting the entropic uncertainty relation for multiparty system. Our protocol greatly improves the feasibility to establish conference keys over asymmetric channels.
description: 7 pages, 3 figures
title: Государственное регулирование в сфере электронной коммерции и цифровых рынков
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2025

description: Учебное пособие посвящено вопросам концептуального осмысления и практического использования технологий электронной коммерции, внедряемых в современной экономике и способствующих построению более сбалансированных и эффективных цифровых рынков. Настоящее издание содержит вопросы и задания для самоконтроля, тесты по всем темам, включает глоссарий ключевых терминов и понятий, способствующих развитию профессиональных компетенций специалиста и навыков практического использования технологий электронной коммерции в ходе построения современной цифровой экономики. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначено для студентов магистратуры направления «Государственное и муниципальное управление», изучающих дисциплину «Государственная политика в сфере электронной коммерции и цифровых рынков», преподавателей и научных сотрудников, государственных и муниципальных служащих, сотрудников коммерческих компаний, а также для широкого круга лиц, интересующихся проблематикой электронной коммерции и цифровых рынков.
Prediction of an unusual trigonal phase of superconducting LaH$_{\bf 10}$ stable from 250 to 425 GPa pressure
Creators: name: Verma, Ashok K.
name: Modak, P.
name: Schrodi, Fabian
name: Aperis, Alex
name: Oppeneer, Peter M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Based on evolutionary crystal structure searches in combination with ab initio calculations, we predict an unusual structural phase of the superconducting LaH$_{10}$ that is stable from about 250 GPa to 425 GPa pressure. This new phase belongs to a trigonal $R\bar{3}m$ crystal lattice with an atypical cell angle, $α_{rhom}$ $\sim$ 24.56$^{\circ}$. We find that the new structure contains three units of LaH$_{10}$ in its primitive cell, unlike the previously known trigonal phase, where primitive cell contains only one LaH$_{10}$ unit. In this phase, a 32-H atoms cage encapsulates La atoms, analogous to the lower pressure face centred cubic phase. However, the hydrogen cages of the trigonal phase consist of quadrilaterals and hexagons, in contrast to the cubic phase, that exhibits squares and regular hexagons. Surprisingly, the shortest H-H distance in the new phase is shorter than that of the lower pressure cubic phase and of atomic hydrogen metal. We find a structural phase transition from trigonal to hexagonal at 425 GPa, where the hexagonal crystal lattice coincides with earlier predictions. Solving the anisotropic Migdal-Eliashberg equations we obtain that the predicted trigonal phase (for standard values of the Coulomb pseudopotential) is expected to become superconducting at a critical temperature of about 175 K, which is less than $T_c \sim$250 K measured for cubic LaH$_{10}$.
On Time. 5b: Electromagnetic Time
Creators: name: Raju, C. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We formulate the 2-body problem of electrodynamics using functional differential equations, and explain the peculiar features of these equations which indicate a paradigm shift in physics. We examine the possible empirical existence of advanced interactions using various absorber theories of radiation. Functional differential equations were connected to quantum mechanics in a subsequent paper in this series and in later publications.
description: 24 pages, 5 figures. New prefatory note added
Algorithms and hardware for the solution of set partitioning problems
Creators: name: Saxton, Timothy Howard
Publisher: name: University of British Columbia
Year: 2010

description: This thesis is concerned with an integer linear programming problem, called the set partitioning problem. The problem is: minimize cx, subject to Ax=e, where A is a binary matrix, e is a column of ones, and c is a cost vector. Despite its particularly simple structure, the set partitioning problem has practical applications in many different areas. There are many applications, however, for which the set partitioning problem is so large and difficult that it cannot be solved in a reasonable amount of time. The binary structure of the partitioning problem suggests that special digital hardware could be developed to solve these problems more efficiently. Two new algorithms, one that could exploit such hardware, are presented and evaluated in this thesis. They are similar in that they use the same bounding procedure. The first is a branch-and-bound algorithm, and the second uses the more sophisticated A* [16] branching strategy. Comparisons with one of the better set partitioning algorithms in the literature indicates that the new algorithms perform significantly better. Heuristic versions of the A* algorithm are also investigated. The heuristic algorithms promise good sub-optimal solutions to very large partitioning problems. A hybrid algorithm formed by combining the A* algorithm with the branch-and-bound algorithm is shown to yield optimal solutions to large problems in minimal time. To solve partitioning problems the generalized design of a microprocessor based system, supplemented with special hardware, is investigated. Such a system would be organized as a peripheral device attached to the host computer. It would be cost effective because it would allow the solution of very large partitioning problems without using the expensive resources of a mainframe computer. Such a system should be of interest to those in application areas that require the solution of many large partitioning problems.
Modeling the SS 433 Jet Bends
Creators: name: Marshall, Herman L.
name: Canizares, Claude R.
name: Schulz, Norbert S.
name: Heinz, Sebastian
name: Hillwig, Todd C.
name: Mioduszewski, Amy J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We fit Chandra HETGS data obtained for the unusual X-ray binary SS 433. While line strengths and continuum levels hardly change, the jet Doppler shifts show aperiodic variations that probably result from shocks in interactions with the local environment. The X-ray and optical emission line regions are found to be related but not coincident as the optical line emission persists for days while the X-ray emission lines fade in less than 5000 s. The X-ray spectrum of the blue-shifted jet shows over two dozen emission lines from plasma at a variety of temperatures. The emission measure distribution derived from the spectrum can be used to test jet cooling models.
description: 4 pages, 3 figure, presented at the conference on "Hign Energy Phenomena in Relativistic Outflows", Dublin, September 2007
A Petri net formulation for the general scheduling problem
Creators: name: Imai, Michael Kenji
Publisher: name: University of British Columbia
Year: 2010

description: This thesis introduces a new Petri net formulation for the general scheduling problem. The first part of this thesis concerns the development of the Petri net formulation. The Petri net formulation is a synthesis of concepts from three classes of Petri nets, marked graphs, timed Petri nets and coloured Petri nets. The general approach to the scheduling problem begins with the construction of a Petri net which models the structure of the general scheduling problem. The scheduling strategy is modeled by modifying the algorithm for the analysis of Petri nets. A schedule is generated by the execution of the Petri net model under the modified analysis. In the second part of this thesis, The Petri net formulation is used for the analysis of a particular scheduling problem. The problem addressed is the scheduling of a task system on a set of processors of different speeds. The scheduling strategy to be analyzed is list scheduling. A new heuristic is proposed for the ordering of the tasks into a list. The proposed heuristic combines notions from the highest levels first heuristic and the longest processing time heuristic. The performance of the proposed heuristic is evaluated by a comparision with other list ordering heuristics. The schedules which are generated by the proposed heuristic are compared to the schedules which are generated by the highest levels first heuristic, the Coffman and Graham Algorithm A and a random list for fifteen precedence constraints. The proposed heuristic generated a better schedule in 98 of 160 cases tested for the 15 precedence constraints. The proposed heuristic generated a schedule as good as the schedule which is generated by any other list in a further 39 cases.
title: U.S.-EU Joint Statement Modifies U.S. Section 232 Steel and Aluminum Tariffs, Lifts EU Retaliatory Tariffs, and Announces Negotiations of a First-ever Carbon-based Sectoral Arrangement
Creators: name: Tsuji, Karl
Publisher: name: United States International Trade Commission
publisherIdentifier: https://ror.org/05hsggr76
publisherIdentifierScheme: ROR
Year: 2022

description: On October 30, 2021, the United States and the European Union (EU, excluding the United Kingdom)
issued a “Steel and Aluminum EU-US Joint Statement,” announcing their joint desire to address
nonmarket overcapacity to preserve their steel and aluminum industries. This Executive Briefing on Trade
describes the U.S.-EU actions to 1) modify the U.S. Section 232 national security tariffs on EU steel and
aluminum; 2) remove the EU retaliatory tariff countermeasures on selected U.S. goods; 3) suspend their
respective panel disputes before the World Trade Organization (WTO); and 4) augment enforcement
mechanisms against tariff circumvention by third-country sector products. In addition, the parties
announced their intentions to negotiate the world’s first carbon-based industry sectoral arrangement by
2024 that will seek not only to address global sectoral overcapacity to restore market-oriented
conditions, but also to reduce greenhouse gas emissions.
Viscous interacting and stability on dark matter Bose-Einstein condensation with modified Chaplygin gas
Creators: name: Mahichi, E.
name: Amani, Alireza
name: Ramzanpour, M. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this paper, the viscous cosmological dynamics are studied in the presence of dark matter Bose-Einstein Condensation (BEC) by curved-FRW background. For this purpose, we use the BEC regime rather than the normal dark matter (the cold dark matter or the barotropic dark matter) with the dark matter Equation of State (EoS) as $p_{dm} \propto ρ_{dm}^2$, which arises from the gravitational form. Therefore, we obtain the corresponding continuity equations with the existence of the universe components by considering an interacting model with modified Chaplygin gas. Afterward, we derive the energy density and the pressure of dark energy in terms of the redshift parameter. And then, by introducing a parametrization function and fitting it with 51 supernova data with the likelihood analysis, we find the cosmological parameters versus redshift parameter. In what follows, we plot the corresponding dynamic graphs proportional to redshift, and then we represent the universe is currently undergoing an accelerated expansion phase. Finally, we explore the stability and the instability of the present model with the sound speed parameter.
description: 18 pages, 5 figures, Canadian Journal of Physics
title: Монтаж, программирование и обслуживание робототехнических средств. Разработки в среде Altium Designer
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2024

description: С помощью данного практикума студенты научатся создавать условно-графические обозначения и топологические посадочные места элементов, а также интегрированные библиотеки. Издание рассматривает основные возможности САПР Altium Designer и разработку электрической принципиальной схемы в среде Altium Designer. Подготовлен в соответствии с Федеральным государственным образовательным стандартом среднего профессионального образования. Практикум предназначен для изучения дисциплины «Монтаж, программирование и обслуживание робототехнических средств» студентами специальности «Мехатроника и робототехника (по отраслям)».
The correlation of black hole mass with metallicity index of host spheroid
Creators: name: Kisaka, Shota
name: Kojima, Yasufumi
name: Otani, Yosuke
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the correlation between the mass of the supermassive black holes (SMBHs) and metal abundance, using existing data sets. The SMBH mass $M_{bh}$ is well correlated with integrated stellar feature of Mgb. For 28 galaxies, the best-fit $M_{bh}$-Mgb relation has a small scatter, which is an equivalent level with other well-known relation, such as a correlation between the stellar velocity dispersion and the mass. An averaged iron index $$ also positively correlates with $M_{bh}$, but the best-fit $M_{bh}$-$$ relation has a larger scatter. The difference comes from the synthesis and evolution mechanisms, and may be important for the SMBH and star formation history in the host spheroid.
description: 6 pages, 4 figures, 1 tables