cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Implications to Sources of Ultra-high-energy Cosmic Rays from their Arrival Distribution
Creators: name: Takami, Hajime
name: Sato, Katsuhiko
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We estimate the local number density of sources of ultra-high-energy cosmic rays (UHECRs) based on the statistical features of their arrival direction distribution. We calculate the arrival distributions of protons above $10^{19}$ eV taking into account their propagation process in the Galactic magnetic field and a structured intergalactic magnetic field, and statistically compare those with the observational result of the Pierre Auger Observatory. The anisotropy in the arrival distribution at the highest energies enables us to estimate the number density of UHECR sources as $\sim 10^{-4} {\rm Mpc}^{-3}$ assuming the persistent activity of UHECR sources. We compare the estimated number density of UHECR sources with the number densities of known astrophysical objects. This estimated number density is consistent with the number density of Fanaroff-Reily I galaxies. We also discuss the reproducability of the observed {\it isotropy} in the arrival distribution above $10^{19}$ eV. We find that the estimated source model cannot reproduce the observed isotropy. However, the observed isotropy can be reproduced with the number density of $10^{-2}$-$10^{-3} {\rm Mpc}^{-3}$. This fact indicates the existence of UHECR sources with a maximum acceleration energy of $\sim 10^{19}$ eV whose number density is an order of magnitude more than that injecting the highest energy cosmic rays.
description: 15 pages, 4 figures
Differential wavefront sensing and control using radio-frequency optical demodulation
Creators: name: Brown, Daniel D.
name: Cao, Huy Tuong
name: Ciobanu, Alexei
name: Veitch, Peter
name: Ottaway, David
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Differential wavefront sensing is an essential technique for optimising the performance of many precision interferometric experiments. Perhaps the most extensive application of this is for alignment sensing using radio-frequency beats measured with quadrant photodiodes. Here we present a new technique that uses optical demodulation to measure such optical beats at significantly higher resolutions using commercial laboratory equipment. We experimentally demonstrate that the images captured can be digitally processed to generate wavefront error signals and use these in a closed loop control system for correct wavefront errors for alignment and mode-matching a beam into an optical cavity to 99.9\%. This experiment paves the way for the correction of even higher order errors when paired with higher order wavefront actuators. Such a sensing scheme could find use in optimizing complex interferometers consisting of coupled cavities, such as those found in gravitational wave detectors, or simply just for sensing higher order wavefront errors in heterodyne interferometric table-top experiments.
title: Besondere Bestimmungen der Prüfungsordnung für den Masterstudiengang Germanistische Literaturwissenschaft der Fakultät für Kulturwissenschaften an der Universität Paderborn
title: vom 14. Juni 2019
titleType: Subtitle
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2019

description: Amtliche Mitteilungen / Universität Paderborn
Spectra of random linear combinations of matrices defined via representations and Coxeter generators of the symmetric group
Creators: name: Evans, Steven N.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Probability (math.PR)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 15A52, 60F99 (Primary), 20C30 (Secondary)

description: We consider the asymptotic behavior as $n\to\infty$ of the spectra of random matrices of the form \[\frac{1}{\sqrt{n-1}}\sum_{k=1}^{n-1}Z_{nk}ρ_n ((k,k+1)),\] where for each $n$ the random variables $Z_{nk}$ are i.i.d. standard Gaussian and the matrices $ρ_n((k,k+1))$ are obtained by applying an irreducible unitary representation $ρ_n$ of the symmetric group on $\{1,2,...,n\}$ to the transposition $(k,k+1)$ that interchanges $k$ and $k+1$ [thus, $ρ_n((k,k+1))$ is both unitary and self-adjoint, with all eigenvalues either +1 or -1]. Irreducible representations of the symmetric group on $\{1,2,...,n\}$ are indexed by partitions $λ_n$ of $n$. A consequence of the results we establish is that if $λ_{n,1}\geλ_{n,2}\ge...\ge0$ is the partition of $n$ corresponding to $ρ_n$, $μ_{n,1}\geμ_{n,2}\ge >...\ge0$ is the corresponding conjugate partition of $n$ (i.e., the Young diagram of $μ_n$ is the transpose of the Young diagram of $λ_n$), $\lim_{n\to\infty}\frac{λ_{n,i}}{n}=p_i$ for each $i\ge1$, and $\lim_{n\to\infty}\frac{μ_{n,j}}{n}=q_j$ for each $j\ge1$, then the spectral measure of the resulting random matrix converges in distribution to a random probability measure that is Gaussian with random mean $θZ$ and variance $1-θ^2$, where $θ$ is the constant $\sum_ip_i^2-\sum_jq_j^2$ and $Z$ is a standard Gaussian random variable.
description: Published in at http://dx.doi.org/10.1214/08-AOP418 the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Theory of near-field matter wave interference beyond the eikonal approximation
Creators: name: Nimmrichter, Stefan
name: Hornberger, Klaus
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A generalized description of Talbot-Lau interference with matter waves is presented, which accounts for arbitrary grating interactions and realistic beam characteristics. The dispersion interaction between the beam particles and the optical elements strongly influences the interference pattern in this near-field effect, and it is known to dominate the fringe visibility if increasingly massive and complex particles are used. We provide a general description of the grating interaction process by combining semiclassical scattering theory with a phase space formulation. It serves to systematically improve the eikonal approximation used so far, and to assess its regime of validity.
description: 19 pages, 10 figures; published version (minor corrections)
THE INFLUENCE OF THE STAGE OF DEVELOPMENT OF SOCIAL POLICY ON THE NEW ERA.
Creators: name: Bakhodirov, Bakhrom
Publisher: name: Zenodo
Year: 2023

description: In the article, after the long-term colonialism of our country abandoned the backward social policy of the time, it began to develop its advanced social policy model. Abandoning any outdated system known from history and implementing modern aspects of the system can expect positive results. In this article, taking into account the importance of the analytical study of the history of the development of complex socio-politics, various conceptual definitions and concepts, the opinions and opinions of scientists of the era and scientists engaged in scientific activity were considered in the analysis of the institutional aspects of social policy.
กลวิธีการใช้คำกริยากับการประกอบสร้างภาพแทนครูในเพลงที่มีเนื้อหาเกี่ยวกับครู
Creators: name: พิชญาวี ทองกลาง
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2564
Subjects: กลวิธีการใช้คำกริยา
ภาพแทนครู
เพลงที่มีเนื้อหาเกี่ยวกับครู

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 15, 1, 209-222
title: Besondere Bestimmungen der Prüfungsordnung für den Masterstudiengang Medienwissenschaften der Fakultät für Kulturwissenschaften an der Universität Paderborn
title: vom 14. Juni 2019
titleType: Subtitle
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2019

description: Amtliche Mitteilungen / Universität Paderborn
An Estelle-C compiler for automatic protocol implementation
Creators: name: Chan, Robin Isaac Man-Hang
Publisher: name: University of British Columbia
Year: 2010

description: Over the past few years, much experience has been gained in semi-automatic protocol implementation using an existing Estelle-C compiler developed at the University of British Columbia. However, with the continual evolution of the Estelle language, that compiler is now obsolete. The present study found substantial syntactic and semantic differences between the Estelle language as implemented by the existing compiler and that specified in the latest ISO document to warrant the construction of a new Estelle-C compiler. The result is a new compiler which translates Estelle as defined in the second version of the ISO Draft Proposal 9074 into the programming language C. The new Estelle-C compiler addresses issues such as dynamic reconfiguration of modules and maintenance of priority relationships among nested modules. A run-time environment capable of supporting the new Estelle features is also presented. The implementation strategy used in the new Estelle-C compiler is illustrated by using the alternating bit protocol found in the ISO Draft Proposal 9074 document.
พฤติกรรมแห่งความผิดพลาดและความต้องการในอาชีพของเด็กและเยาวชนในศูนย์ฝึกและอบรมเด็กและเยาวชนชาย
Creators: name: ณัฐพล แก้วเกิด
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2564
Subjects: พฤติกรรมแห่งความผิดพลาด
ความต้องการในอาชีพ
เด็กและเยาวชน
ศูนย์และอบรมเด็กและเยาวชนชาย

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 15, 1, 223-235
Digital competency of educators in the virtual learning environment: a structural equation modeling analysis
Creators: name: Hizam, S. M.
name: Akter, H.
name: Sentosa, I.
name: Ahmed, W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Computers and Society (cs.CY)
subject: Other Statistics (stat.OT)
subject: FOS: Computer and information sciences

description: This study integrates the educators digital competency (DC), as an individual characteristic construct of the task-technology fit (TTF) theory, to examine a better fit between Moodle using and teaching task, and to investigate its effect on both Moodles utilization and their task performance. For assessing our proposed hypotheses, an online survey was conducted with 238 teaching staff from different departments of universities in Malaysia. Using Structural Equation Modelling (SEM), our analysis revealed that all the proposed components (i.e., technology literacy, knowledge deepening, presentation skills, and professional skills) of digital competency significantly influenced the TTF. The Task-Technology Fit was also found as an influential construct, which positively and significantly affected both Moodles utilization and teachers task performance. Besides, Moodles utilization was confirmed to be a substantial determinant of the performance impact. In the end, this study included limitations and future directions based on how the study's contribution can support academics and practitioners for assessing and understanding what particular components of digital competency impact TTF, which in turn may influence the systems utilization and performance impact.
description: 10 Pages, 02 Figures, 04 Tables, 2nd ICCETIM (International Conference on Creative Economics, Tourism & Information Management) 2020, Yogyakarta, Indonesia
ภาพแทนความเป็นชายและความเป็นหญิงอีสานในหมอลำกลอน
Creators: name: หทัยวรรณ มณีวงษ์
Publisher: name: หจก.เลิศศิลป์ สาส์ณ โฮลดิ้ง
Year: 2564
Subjects: ภาพแทน
อัตลักษณ์ทางเพศ
ความเป็นชาย
ความเป็นหญิง
หมอลำกลอน
อีสาน

description: วารสารชุมชนวิจัย มหาวิทยาลัยราชภัฏนครราชสีมา, 15, 1, 236-249
title: Besondere Bestimmungen der Prüfungsordnung für den Masterstudiengang Musikwissenschaft der Fakultät für Kulturwissenschaften an der Universität Paderborn
title: vom 14. Juni 2019
titleType: Subtitle
Creators: name: Universität Paderborn
Publisher: name: UB-PAD - Paderborn University Library
Year: 2019

description: Amtliche Mitteilungen / Universität Paderborn
If Only We Had Better Counterfactual Explanations: Five Key Deficits to Rectify in the Evaluation of Counterfactual XAI Techniques
Creators: name: Keane, Mark T
name: Kenny, Eoin M
name: Delaney, Eoin
name: Smyth, Barry
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: In recent years, there has been an explosion of AI research on counterfactual explanations as a solution to the problem of eXplainable AI (XAI). These explanations seem to offer technical, psychological and legal benefits over other explanation techniques. We survey 100 distinct counterfactual explanation methods reported in the literature. This survey addresses the extent to which these methods have been adequately evaluated, both psychologically and computationally, and quantifies the shortfalls occurring. For instance, only 21% of these methods have been user tested. Five key deficits in the evaluation of these methods are detailed and a roadmap, with standardised benchmark evaluations, is proposed to resolve the issues arising; issues, that currently effectively block scientific progress in this field.
description: 13 pages, 2 figures
Различия в профессиональном составе этнических групп и миграции
Creators: name: А.Н., Ямсков
Publisher: name: Zenodo
Year: 1990
Subjects: социально-профессиональный состав
сельское население
русские в полиэтничных сельских районах
русские в Азербайджане

description: Представлен сравнительный анализ социально-профессиональной структуры и сфер занятости сельского русского и коренного населения (азербайджанцы, таты, лезгины, армяне), основанный на полевых материалах автора, собранных в 1986-1989 гг. в 13 селениях Азербайджана.
AuctionWhisk: Using an Auction-Inspired Approach for Function Placement in Serverless Fog Platforms
Creators: name: Bermbach, David
name: Bader, Jonathan
name: Hasenburg, Jonathan
name: Pfandzelter, Tobias
name: Thamsen, Lauritz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: The Function-as-a-Service (FaaS) paradigm has a lot of potential as a computing model for fog environments comprising both cloud and edge nodes, as compute requests can be scheduled across the entire fog continuum in a fine-grained manner. When the request rate exceeds capacity limits at the resource-constrained edge, some functions need to be offloaded towards the cloud. In this paper, we present an auction-inspired approach in which application developers bid on resources while fog nodes decide locally which functions to execute and which to offload in order to maximize revenue. Unlike many current approaches to function placement in the fog, our approach can work in an online and decentralized manner. We also present our proof-of-concept prototype AuctionWhisk that illustrates how such an approach can be implemented in a real FaaS platform. Through a number of simulation runs and system experiments, we show that revenue for overloaded nodes can be maximized without dropping function requests.
description: Wiley - Software: Practice and Experience
Novel Josephson Effects in d-wave Superconductor Junctions with Antiferromagnetic Interlayers
Creators: name: Andersen, Brian M.
name: Barash, Yu. S.
name: Graser, S.
name: Hirschfeld, P. J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We calculate the dc supercurrent through a Josephson tunnel junction consisting of an antiferromagnetic (AF) interlayer sandwiched between two d-wave superconductors (d). Such d/AF/d junctions exhibit a rich dependence of the Josephson current on the interlayer parameters, including the possibility of 0-pi transitions with varying temperature or interlayer thickness. Furthermore, we study d/I/d junctions when the dSC leads include subdominant magnetic correlations. In this case induced magnetism near the interface can strongly diminish the critical current for 110 oriented junctions whereas no suppression is obtained for the 100 orientation. This may help resolve a long-standing puzzle of the critical current versus grain boundary angle in high-T_c superconductors.
description: 6 pages, 4 figures
Progress report on solar age calibration
Creators: name: Houdek, G.
name: Gough, D. O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on an ongoing investigation into a seismic calibration of solar models designed for estimating the main-sequence age and a measure of the chemical abundances of the Sun. Only modes of low degree are employed, so that with appropriate modification the procedure could be applied to other stars. We have found that, as has been anticipated, a separation of the contributions to the seismic frequencies arising from the relatively smooth, glitch-free, background structure of the star and from glitches produced by helium ionization and the abrupt gradient change at the base of the convection zone renders the procedure more robust than earlier calibrations that fitted only raw frequencies to glitch-free asymptotics. As in the past, we use asymptotic analysis to design seismic signatures that are, to the best of our ability, contaminated as little as possible by those uncertain properties of the star that are not directly associated with age and chemical composition. The calibration itself, however, employs only numerically computed eigenfrequencies. It is based on a linear perturbation from a reference model. Two reference models have been used, one somewhat younger, the other somewhat older than the Sun. The two calibrations, which use BiSON data, are more-or-less consistent, and yield a main-sequence age $t_\odot=4.68\pm0.02 $Gy, coupled with a formal initial heavy-element abundance $Z=0.0169\pm0.0005$. The error analysis has not yet been completed, so the estimated precision must be taken with a pinch of salt.
description: 8 pages, 3 figures, in L. Deng, K.L. Chan, C. Chiosi, eds, The Art of Modelling Stars in the 21st Century, Proc. IAU Symp. No. 252, invited contributed paper
[CII] emission properties of the massive star-forming region RCW36 in a filamentary molecular cloud
Creators: name: Suzuki, T.
name: Oyabu, S.
name: Ghosh, S. K.
name: Ojha, D. K.
name: Kaneda, H.
name: Maeda, H.
name: Nakagawa, T.
name: Ninan, J. P.
name: Vig, S.
name: Hanaoka, M.
name: Saito, F.
name: Fujiwara, S.
name: Kanayama, T.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Aims: To investigate properties of [CII]158 $μ$m emission of RCW36 in a dense filamentary cloud. Methods: [CII] observations of RCW36 covering an area of ~30 arcmin$\times$30 arcmin were carried out with a Fabry-Pérot spectrometer aboard a 100-cm balloon-borne far-infrared (IR) telescope with an angular resolution of 90 arcsec. By using AKARI and Herschel images, the spatial distribution of the [CII] intensity was compared with those of emission from the large grains and PAH. Results: The [CII] emission is spatially in good agreement with shell-like structures of a bipolar lobe observed in IR images, which extend along the direction perpendicular to the direction of a cold dense filament. We found that the [CII]--160 $μ$m relation for RCW36 shows higher brightness ratio of [CII]/160 $μ$m than that for RCW 38, while the [CII]--9 $μ$m relation for RCW36 is in good agreement with that for RCW38. Conclusions: The [CII] emission spatially well correlates with PAH and cold dust emissions. This means that the observed [CII] emission dominantly comes from PDRs. Moreover, the L_[CII]/L_FIR ratio shows large variation compared with the L_[CII]/L_PAH ratio. In view of the observed tight correlation between L_[CII]/L_FIR and the optical depth at $λ$=160 $μ$m, the large variation in L_[CII]/L_FIR can be simply explained by the geometrical effect, viz., L_FIR has contributions from the entire dust-cloud column along the line of sight, while L_[CII] has contributions from far-UV illuminated cloud surfaces. Based on the picture of the geometry effect, the enhanced brightness ratio of [CII]/160 $μ$m is attributed to the difference in gas structures where massive stars are formed: filamentary (RCW36) and clumpy (RCW38) molecular clouds and thus suggests that RCW36 is dominated by far-UV illuminated cloud surfaces compared with RCW38.
description: 9 pages, 11 figures, accepted for publication in A&A
Новоивановка: История селения и крестьянского хозяйства
Creators: name: А.Н., Ямсков
Publisher: name: Zenodo
Year: 1990
Subjects: русские в Азербайджане
молокане
русские крестьяне Закавказья
русское крестьянское хозяйство

description: Анализ истории возникновения села, динамики численности населения, особенностей дореволюционного крестьянского хозяйства в русском старожильческом молоканском селении Новоивановка Кедабекского района Азербайджана. Работа частично основана на полевых материалах автора 1987 г.
Electronic Ground State of Higher Acenes
Creators: name: Jiang, De-en
name: Dai, Sheng
Publisher: name: arXiv
Year: 2007
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We examine the electronic ground state of acenes with different number of fused benzene rings (up to 40) by using first principles density functional theory. Their properties are compared with those of infinite polyacene. We find that the ground state of acenes that consist of more than seven fused benzene rings is an antiferromagnetic (in other words, open-shell singlet) state, and we show that this singlet is not necessarily a diradical, because the spatially separated magnetizations for the spin-up and spin-down electrons increase with the size of the acene. For example, our results indicate that there are about four spin-up electrons localized at one zigzag edge of 20-acene. The reason that both acenes and polyacene have the antiferromagnetic ground state is due to the zigzag-shaped boundaries, which cause pi-electrons to localize and form spin orders at the edges. Both wider graphene ribbons and large rectangular-shaped polycyclic aromatic hydrocarbons have been shown to share this antiferromagnetic ground state. Therefore, we demonstrate that the pi-electronic structure of higher acenes and ployacene are still dictated by the zigzag edges, and our results provide a consistent description of their electronic ground state.
description: revised: corrected some errors, rephrased some discussions, and added a reference (Ref. 29); 19 pages, 6 figures
Exceptional Sensitivity to Neutrino Parameters with a Two Baseline Beta-Beam Set-up
Creators: name: Agarwalla, Sanjib Kumar
name: Choubey, Sandhya
name: Raychaudhuri, Amitava
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We examine the reach of a Beta-beam experiment with two detectors at carefully chosen baselines for exploring neutrino mass parameters. Locating the source at CERN, the two detectors and baselines are: (a) a 50 kton iron calorimeter (ICAL) at a baseline of around 7150 km which is roughly the magic baseline, e.g., ICAL@INO, and (b) a 50 kton Totally Active Scintillator Detector at a distance of 730 km, e.g., at Gran Sasso. We choose 8B/8Li source ions with a boost factor γof 650 for the magic baseline while for the closer detector we consider 18Ne/6He ions with a range of Lorentz boosts. We find that the locations of the two detectors complement each other leading to an exceptional high sensitivity. With γ=650 for 8B/8Li and γ=575 for 18Ne/6He and total luminosity corresponding to 5\times (1.1 \times 10^{18}) and 5\times (2.9\times 10^{18}) useful ion decays in neutrino and antineutrino modes respectively, we find that our two detector set-up can probe maximal CP violation and establish the neutrino mass ordering if \sin^22θ_{13} is 1.4\times 10^{-4} and 2.7\times 10^{-4}, respectively, or more. The sensitivity reach for \sin^22θ_{13} itself is 5.5 \times 10^{-4}. With a factor of 10 higher luminosity, the corresponding \sin^22θ_{13} reach of this set-up would be 1.8\times 10^{-5}, 4.6\times 10^{-5} and 5.3\times 10^{-5} respectively for the above three performance indicators. CP violation can be discovered for 64% of the possible δ_{CP} values for \sin^22θ_{13} \geq 10^{-3} (\geq 8\times 10^{-5}), for the standard luminosity (10 times enhanced luminosity). Comparable physics performance can be achieved in a set-up where data from CERN to INO@ICAL is combined with that from CERN to the Boulby mine in United Kingdom, a baseline of 1050 km.
description: 24 pages, 5 figures, version to appear in Nucl.Phys.B
A Fortran 90 program to solve the Hartree-Fock equations for interacting spin-1/2 Fermions confined in Harmonic potentials
Creators: name: Pal, H. K.
name: Shukla, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A set of weakly interacting spin-1/2 Fermions, confined by a harmonic oscillator potential, and interacting with each other via a contact potential, is a model system which closely represents the physics of a dilute gas of two-component Fermionic atoms confined in a magneto-optic trap. In the present work, our aim is to present a Fortran 90 computer program which, using a basis set expansion technique, solves the Hartree-Fock (HF) equations for spin-1/2$ Fermions confined by a three-dimensional harmonic oscillator potential, and interacting with each other via pair-wise delta-function potentials. Additionally, the program can also account for those anharmonic potentials which can be expressed as a polynomial in the position operators $x,$ $y$, and $z$. Both the restricted-HF (RHF), and the unrestricted-HF (UHF) equations can be solved for a given number of Fermions, with either repulsive or attractive interactions among them. The option of UHF solutions for such systems also allows us to study possible magnetic properties of the physics of two-component confined atomic Fermi gases, with imbalanced populations. Using our code we also demonstrate that such a system exhibits shell structure, and follows Hund's rule.
description: 19 pages and 2 figures
Optimized Length Design and Construction of 3 Ton Lifting Capacity Diesel Forklifts
Creators: name: Halil ÇETİN
Publisher: name: Zenodo
Year: 2023

description: In general, forklifts perform loading and unloading operations in very narrow, closed or open areas. Therefore, it is necessary to increase maneuverability by shortening the forklift length. For this purpose, the production of forklifts with shorter lengths compared to similar diesel forklifts with a capacity of 3 tons was designed. For this purpose, 3D design studies were carried out. In order to shorten the chassis, the forklift fenders and steps were made in one piece. In addition, significant structural changes were made to the counterweight and its length was shortened. Our new model, whose production has been completed, is among the models with the shortest length among similar diesel forklift models of the same capacity, with its 2590 mm L2 length. These features allow the forklift to operate in very small spaces. Abstract. In this study, forklifts with shorter lengths than similar diesel forklifts with a capacity of 3 tons were designed and manufactured. For this purpose, 3D design studies were carried out to shorten the forklift length. Appropriate material selection was made to ensure driver safety and chassis durability. Forklift fenders and steps, which were our original work during production, were made as a single piece in order to shorten the chassis. Additionally, significant structural changes were made to the counterweight and its length was shortened. Our new model, whose production has been completed; With its 2590 mm L2 length, it is among the shortest models among similar forklifts.
title: Optimierung des Durchzündverhaltens von Kugelfunkenstrecken bei überlagerten Stoßspannungsprüfungen
Creators: name: Hallas, Martin
name: Dorsch, Christian
name: Hinrichsen, Volker
Publisher: name: VDE Verlag
Year: 2021

description: Typprüfungen an HGÜ-Betriebsmitteln wie Kabeln oder gasisolierten Systemen sehen überlagerte Stoßspannungsprüfungen vor. Bei diesen wird bei anliegender Gleichspannung am Prüfling eine Stoßspannung hinzugeschaltet. Hierfür werden typischerweise Kugelfunkenstrecken oder Koppelkondensatoren verwendet. Aus der Literatur ist bekannt, dass Funkenstrecken ein problematisches Verhalten bei überlagerten Stoßspannungsprüfungen zeigen können. Im Folgenden werden Laborversuche vorgestellt, in denen überlagerte Prüfungen mithilfe von Kugelfunkenstrecken durchgeführt wurden. Dabei konnte das Zündverhalten der Funkenstrecke durch diverse Maßnahmen erheblich verbessert werden. Die Untersuchungen wurden für Spannungen bis 300 kV DC durchgeführt. Es wurde eine Triggereinrichtung in die Kugelfunkenstrecke eingebaut, welche den möglichen Schlagweitenbereich zum Durchzünden der Funkenstrecke deutlich erhöht. Weiterhin konnten durch die Platzierung der Belastungskapazität des Stoßspannungsgenerators parallel zum Prüfling das Zündverhalten und die Kurvenform der Stoßspannung erheblich verbessert werden. Insgesamt wird gezeigt, dass die in der Literatur beschriebenen Probleme bei überlagerten Stoßspannungsprüfungen durch gezielte Maßnahmen vollständig gelöst werden können.
A fully automatic analytic approach to budget-constrained system upgrade
Creators: name: Wong, Angela Sai On
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes the development of a software package to upgrade computer systems. The package, named OPTIMAL, solves the following problem: given an existing computer system and its workload, a budget, and the costs and descriptions of available upgrade alternatives for devices in the system, what is the most cost-effective way of upgrading and tuning the system to produce the optimal system throughput? To enhance the practicality of OPTIMAL, the research followed two criteria: i) input required by OPTIMAL must be system and workload characteristics directly measurable from the system under consideration; ii) other than gathering the appropriate input data, the package must be completely automated and must not require any specialized knowledge in systems performance evaluation to interpret the results. The output of OPTIMAL consists of the optimal system throughput under the budget constraint, the workload and system configuration (or upgrade strategy) that provide such throughput, and the cost of the upgrade. Various optimization techniques, including saturation analysis and fine tuning, have been applied to enhance the performance of OPTIMAL.
Bicoxidens Attems 1928
Creators: name: Mwabvu, Tarombera
name: Hamer, Michelle
name: Slotow, Robert
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Diplopoda
Spirostreptida
Spirostreptidae
Bicoxidens

description: Bicoxidens species in Mwabvu et al. (2007) in order to accommodate aridis. Th is becomes the first couplet because the shape of the distal region of the telocoxite and the structure of the telopodite distinguish aridis from congeners: 1 Apical metaplica hook-shaped and with a median cavity (Figs. 1a, 1b), without produced lateral or median processes; post knee telopodite not L-shaped (Fig. 1a), with a clockwise coil after the femoral lobes and without looping at the extremity (Fig. 2)..............................................  Bicoxidens aridis sp. n. – Apical metaplica not hook-shaped and without a median cavity; with produced lateral or median processes; post knee telopodite L-shaped, without a clockwise coil after the femoral lobes and with looping at the extremity.......................................................................... 2 (all other Bicoxidens species, see key in Mwabvu et al. (2007))
description: Published as part of Mwabvu, Tarombera, Hamer, Michelle & Slotow, Robert, 2009, A new species of Bicoxidens Attems, 1928 (Diplopoda, Spirostreptida, Spirostreptidae) from northern Zimbabwe, pp. 75-81 in ZooKeys 7 (7) on page 80, DOI: 10.3897/zookeys.7.106, http://zenodo.org/record/576438
description: {"references": ["Mwabvu T, Hamer ML, Slotow RH (2007) A taxonomic review of the southern African millipede genus, Bicoxidens Attems, 1928 (Diplopoda: Spirostreptida: Spirostreptidae), with the description of three new species and a tentative phylogeny. Zootaxa 1452: 1 - 23."]}
Group structure of the integration-by-part identities and its application to the reduction of multiloop integrals
Creators: name: Lee, R. N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The excessiveness of integration-by-part (IBP) identities is discussed. The Lie-algebraic structure of the IBP identities is used to reduce the number of the IBP equations to be considered. It is shown that Lorentz-invariance (LI) identities do not bring any information additional to that contained in the IBP identities, and therefore, can be discarded.
description: 6 pages, RevTeX. Version, published in JHEP, references corrected
MOESM3 of Hemodynamic effects of extended prone position sessions in ARDS
Creators: name: Ruste, Martin
name: Bitker, Laurent
name: Yonis, Hodane
name: Riad, Zakaria
name: Louf-Durier, Aurore
name: Lissonde, Floriane
name: Perinel-Ragey, Sophie
name: Guerin, Claude
name: Richard, Jean-Christophe
Publisher: name: figshare
Year: 2018
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified

description: Additional file 3. Diagnostic performance of variables assessed at T1 to predict an increase in CI greater than 15% between T1 and T3.
Delicate f(R) gravity models with disappearing cosmological constant and observational constraints on the model parameters
Creators: name: Dev, Abha
name: Jain, D.
name: Jhingan, S.
name: Nojiri, S.
name: Sami, M.
name: Thongkool, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the $f(R)$ theory of gravity using metric approach. In particular we investigate the recently proposed model by Hu-Sawicki, Appleby $-$ Battye and Starobinsky. In this model, the cosmological constant is zero in flat space time. The model passes both the Solar system and the laboratory tests. But the model parameters need to be fine tuned to avoid the finite time singularity recently pointed in the literature. We check the concordance of this model with the $H(z)$ and baryon acoustic oscillation data. We find that the model resembles the $Λ$CDM at high redshift. However, for some parameter values there are variations in the expansion history of the universe at low redshift.
description: 16 pages and 9 figures, typos corrected, few references and minor clarifications added, revised version to appera in PRD
Pressure-Tuned Spin and Charge Ordering in an Itinerant Antiferromagnet
Creators: name: Feng, Yejun
name: Jaramillo, R.
name: Srajer, G.
name: Lang, J. C.
name: Islam, Z.
name: Somayazulu, M. S.
name: Shpyrko, O. G.
name: Pluth, J. J.
name: Mao, H. -k.
name: Isaacs, E. D.
name: Aeppli, G.
name: Rosenbaum, T. F.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Elemental chromium orders antiferromagnetically near room temperature, but the ordering temperature can be driven to zero by applying large pressures. We combine diamond anvil cell and synchrotron x-ray diffraction techniques to measure directly the spin and charge order in the pure metal at the approach to its quantum critical point. Both spin and charge order are suppressed exponentially with pressure, well beyond the region where disorder cuts off such a simple evolution, and they maintain a harmonic scaling relationship over decades in scattering intensity. By comparing the development of the order parameter with that of the magnetic wavevector, it is possible to ascribe the destruction of antiferromagnetism to the growth in electron kinetic energy relative to the underlying magnetic exchange interaction.
Minimal size of a barchan dune
Creators: name: Parteli, Eric J. R.
name: Duran, Orencio
name: Herrmann, Hans J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Barchans are dunes of high mobility which have a crescent shape and propagate under conditions of unidirectional wind. However, sand dunes only appear above a critical size, which scales with the saturation distance of the sand flux [P. Hersen, S. Douady, and B. Andreotti, Phys. Rev. Lett. {\bf{89,}} 264301 (2002); B. Andreotti, P. Claudin, and S. Douady, Eur. Phys. J. B {\bf{28,}} 321 (2002); G. Sauermann, K. Kroy, and H. J. Herrmann, Phys. Rev. E {\bf{64,}} 31305 (2001)]. It has been suggested by P. Hersen, S. Douady, and B. Andreotti, Phys. Rev. Lett. {\bf{89,}} 264301 (2002) that this flux fetch distance is itself constant. Indeed, this could not explain the proto size of barchan dunes, which often occur in coastal areas of high litoral drift, and the scale of dunes on Mars. In the present work, we show from three dimensional calculations of sand transport that the size and the shape of the minimal barchan dune depend on the wind friction speed and the sand flux on the area between dunes in a field. Our results explain the common appearance of barchans a few tens of centimeter high which are observed along coasts. Furthermore, we find that the rate at which grains enter saltation on Mars is one order of magnitude higher than on Earth, and is relevant to correctly obtain the minimal dune size on Mars.
description: 11 pages, 10 figures
Magnetic structure and multiferroicity of Sc-substituted hexagonal YbFeO$_3$
Creators: name: Tang, Y. S.
name: Wang, S. M.
name: Lin, L.
name: Garlea, V. Ovidiu
name: Zou, Tao
name: Zheng, S. H.
name: Zhang, H. -M.
name: Zhou, J. T.
name: Luo, Z. L.
name: Yan, Z. B.
name: Dong, S.
name: Charlton, T.
name: Liu, J. -M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Hexagonal rare-earth ferrite RFeO$_3$ family represents a unique class of multiferroics exhibiting weak ferromagnetism, and a strong coupling between magnetism and structural trimerization is predicted. However, the hexagonal structure for RFeO$_3$ remains metastable in conventional condition. We have succeeded in stabilizing the hexagonal structure of polycrystalline YbFeO$_3$ by partial Sc substitution of Yb. Using bulk magnetometry and neutron diffraction, we find that Yb$_{0.42}$Sc$_{0.58}$FeO$_3$ orders into a canted antiferromagnetic state with the Neel temperature $T_N$ ~ 165 K, below which the $Fe^{3+}$ moments form the triangular configuration in the $ab$-plane and their in-plane projections are parallel to the [100] axis, consistent with magnetic space group $P$6$_{3}$$c'm'$. It is determined that the spin-canting is aligned along the $c$-axis, giving rise to the weak ferromagnetism. Furthermore, the $Fe^{3+}$ moments reorient toward a new direction below reorientation temperature $T_R$ ~ 40 K, satisfying magnetic subgroup $P$6$_{3}$, while the $Yb^{3+}$ moments order independently and ferrimagnetically along the $c$-axis at the characteristic temperature $T_{Yb}$ ~ 15 K. Interestingly, reproducible modulation of electric polarization induced by magnetic field at low temperature is achieved, suggesting that the delicate structural distortion associated with two-up/one-down buckling of the Yb/Sc-planes and tilting of the FeO$_5$ bipyramids may mediate the coupling between ferroelectric and magnetic orders under magnetic field. The present work represents a substantial progress to search for high-temperature multiferroics in hexagonal ferrites and related materials.
Crossovers from parity conserving to directed percolation universality
Creators: name: Odor, Geza
name: Menyhard, Nora
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The crossover behavior of various models exhibiting phase transition to absorbing phase with parity conserving class has been investigated by numerical simulations and cluster mean-field method. In case of models exhibiting Z_2 symmetric absorbing phases (the NEKIMCA and Grassberger's A stochastic cellular automaton) the introduction of an external symmetry breaking field causes a crossover to kink parity conserving models characterized by dynamical scaling of the directed percolation (DP) and the crossover exponent: 1/ϕ~ 0.53(2). In case an even offspringed branching and annihilating random walk model (dual to NEKIMCA) the introduction of spontaneous particle decay destroys the parity conservation and results in a crossover to the DP class characterized by the crossover exponent: 1/ϕ\simeq 0.205(5). The two different kinds of crossover operators can't be mapped onto each other and the resulting models show a diversity within the DP universality class in one dimension. These 'sub-classes' differ in cluster scaling exponents.
description: 6 pages, 6 figures, accepted version in PRE
Libro de Actas del XXXIV Congreso Anual de la Sociedad Española de Ingeniería Biomédica (CASEIB 2016)
Creators: name: Jané Campos, Raimon
name: Trenor Gomis, Beatriz
name: Saiz Rodríguez, Francisco Javier
name: García Casado, Francisco Javier
name: Romero Pérez, Lucía
Publisher: name: Zenodo
Year: 2016
Subjects: Biomedical engineering
Spain
CASEIB

description: XXXIV Congreso Anual de la Sociedad Española de Ingeniería Biomédica

Valencia, España

23-25 de noviembre de 2016

Libro de Actas
An Oracle for Guiding Large-Scale Model/Hybrid Parallel Training of Convolutional Neural Networks
Creators: name: Kahira, Albert Njoroge
name: Nguyen, Truong Thao
name: Gomez, Leonardo Bautista
name: Takano, Ryousei
name: Badia, Rosa M
name: Wahib, Mohamed
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Deep Neural Network (DNN) frameworks use distributed training to enable faster time to convergence and alleviate memory capacity limitations when training large models and/or using high dimension inputs. With the steady increase in datasets and model sizes, model/hybrid parallelism is deemed to have an important role in the future of distributed training of DNNs. We analyze the compute, communication, and memory requirements of Convolutional Neural Networks (CNNs) to understand the trade-offs between different parallelism approaches on performance and scalability. We leverage our model-driven analysis to be the basis for an oracle utility which can help in detecting the limitations and bottlenecks of different parallelism approaches at scale. We evaluate the oracle on six parallelization strategies, with four CNN models and multiple datasets (2D and 3D), on up to 1024 GPUs. The results demonstrate that the oracle has an average accuracy of about 86.74% when compared to empirical results, and as high as 97.57% for data parallelism.
description: The International ACM Symposium on High-Performance Parallel and Distributed Computing 2021 (HPDC'21)
Twisted Poincaré Invariant Quantum Field Theories
Creators: name: Balachandran, A. P.
name: Pinzul, A.
name: Qureshi, B. A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It is by now well known that the Poincaré group acts on the Moyal plane with a twisted coproduct. Poincaré invariant classical field theories can be formulated for this twisted coproduct. In this paper we systematically study such a twisted Poincaré action in quantum theories on the Moyal plane. We develop quantum field theories invariant under the twisted action from the representations of the Poincaré group, ensuring also the invariance of the S-matrix under the twisted action of the group . A significant new contribution here is the construction of the Poincaré generators using quantum fields.
description: 17 pages, JHEP style
¿Aranceles a las ideas?
Creators: name: Suing, Abel
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Political sciences
subject: Political communication
subject: Commerce
subject: Tax
subject: Tax law
subject: Hispanic or Latino

description: Publicación presentada en la sección de opinión del diario digital hora 32 https://hora32.com.ec/ que se edita en Loja (Ecuador)
Non-perturbative renormalization of the chromo-magnetic operator in Heavy Quark Effective Theory and the B* - B mass splitting
Creators: name: Guazzini, Damiano
name: Meyer, Harvey B.
name: Sommer, Rainer
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We carry out the non-perturbative renormalization of the chromo-magnetic operator in Heavy Quark Effective Theory. At order 1/m of the expansion, the operator is responsible for the mass splitting between the pseudoscalar and vector B mesons. We obtain its two-loop anomalous dimension in a Schr"odinger functional scheme by successive one-loop conversions to the lattice MS scheme and the MS-bar scheme. We then compute the scale evolution of the operator non-perturbatively in the N_f=0 theory between $μ\approx 0.3$ GeV and $μ\approx 100$ GeV, where contact is made with perturbation theory. The overall renormalization factor that converts the bare lattice operator to its renormalization group invariant form is given for the Wilson gauge action and two standard discretizations of the heavy-quark action. As an application, we find that this factor brings the previous quenched predictions of the B* - B mass splitting closer to the experimental value than found with a perturbative renormalization. The same renormalization factor is applicable to the spin-dependent potentials of Eichten and Feinberg.
description: 15 pages + appendices