cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The joint bidiagonalization of a matrix pair with inaccurate inner iterations
Creators: name: Li, Haibo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65F25, 65F20, 15A18, 65G99

description: The joint bidiagonalization (JBD) process iteratively reduces a matrix pair $\{A,L\}$ to two bidiagonal forms simultaneously, which can be used for computing a partial generalized singular value decomposition (GSVD) of $\{A,L\}$. The process has a nested inner-outer iteration structure, where the inner iteration usually can not be computed exactly. In this paper, we study the inaccurately computed inner iterations of JBD by first investigating influence of computational error of the inner iteration on the outer iteration, and then proposing a reorthogonalized JBD (rJBD) process to keep orthogonality of a part of Lanczos vectors. An error analysis of the rJBD is carried out to build up connections with Lanczos bidiagonalizations. The results are then used to investigate convergence and accuracy of the rJBD based GSVD computation. It is shown that the accuracy of computed GSVD components depend on the computing accuracy of inner iterations and condition number of $(A^T,L^T)^T$ while the convergence rate is not affected very much. For practical JBD based GSVD computations, our results can provide a guideline for choosing a proper computing accuracy of inner iterations in order to obtain approximate GSVD components with a desired accuracy. Numerical experiments are made to confirm our theoretical results.
Optical observations of PSR J1357-6429 field
Creators: name: Kirichenko, Aida
name: Danilenko, Andrey
name: Mennickent, Ronald E.
name: Pavlov, George
name: Shibanov, Yury
name: Zharikov, Sergey
name: Zyuzin, Dmitry
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: PSR J1357-6429 is a Vela-like radio pulsar that has been recently detected with Chandra and Fermi, which, like Vela, powers a compact X-ray pulsar wind nebula and X-ray-radio plerion associated with an extended TeV source. We present our deep optical observations with the Very Large Telescope to search for an optical counterpart of the pulsar and its nebula. We detected a point-like source in V, R, and I bands whose position is in agreement with the X-ray position of the pulsar, and whose colours are distinct from those of ordinary stars. The tentative optical luminosity and efficiency of the source are similar to those of the Vela pulsar, which also supports the optical identification. However, the source spectrum is unusually steep, with a spectral index of about 5, which is not typical of optical pulsars. The source offset from the radio position of PSR J1357-6429, which is in line with the corresponding offset of the X-ray position, implies the pulsar transverse velocity of 1600-2000 km/s at the distance of 2-2.5 kpc, making it the fastest moving pulsar known.
description: 4 pages, to appear in the conference proceedings, "Electromagnetic radiation from pulsars and magnetars", Zielona Gora, April 2012
Design, Control, and Motion Strategy of TRADY: Tilted-Rotor-Equipped Aerial Robot With Autonomous In-Flight Assembly and Disassembly Ability
Creators: name: Sugihara, Junichiro
name: Nishio, Takuzumi
name: Nagato, Keisuke
name: Nakao, Masayuki
name: Zhao, Moju
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In previous research, various types of aerial robots were developed to improve maneuverability or manipulation abilities. However, there was a challenge in achieving both mobility and manipulation capabilities simultaneously. This is because aerial robots with high mobility lack the necessary rotors to perform manipulation tasks, while those with manipulation ability are too large to achieve high mobility. To address this issue, a new aerial robot called TRADY was introduced in this article. TRADY is a tilted-rotor-equipped aerial robot that can autonomously assemble and disassemble in-flight, allowing for a switch in control model between under-actuated and fully-actuated models. The system features a novel docking mechanism and optimized rotor configuration, as well as a control system that can transition between under-actuated and fully-actuated modes and compensate for discrete changes. Additionally, a new motion strategy for assembly/disassembly motion that includes recovery behavior from hazardous conditions was introduced. Experimental results showed that TRADY can successfully execute aerial assembly/disassembly motions with a 90% success rate and generate more than nine times the torque of a single unit in the assembly state. This is the first robot system capable of performing both assembly and disassembly while seamlessly transitioning between fully-actuated and under-actuated models.
QADIMGI XORAZM DAVLATI TARIXI VA UNING IJTIMOIY-IQTISODIY HAYOTI.
Creators: name: Choriyeva, Muxlisa
name: Ziyoratova, Sabrina
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolamizning mazmuni shundan iboratki, Qadimgi Xorazm davlati haqida berilgan ma'lumotlarga asoslanib, uning vujudga kelish tarixi, ijtimoiy-iqtisodiy hayoti, aholisi va diniy eʼtiqodi  haqida obektev yondashgan holda qisqacha maʼlumot berishdan iborat. Lekin qadimgi Xorazm davlati haqida berilgan ma'lumotlarga koʻra uning joylashgan oʻrni va "Katta Xorazm" davlati  haqida turli xil qarashlar mavjud.
Analysis of new high-precision transit light curves of WASP-10 b: starspot occultations, small planetary radius, and high metallicity
Creators: name: Maciejewski, G.
name: Raetz, St.
name: Nettelmann, N.
name: Seeliger, M.
name: Adam, Ch.
name: Nowak, G.
name: Neuhaeuser, R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The WASP-10 planetary system is intriguing because different values of radius have been reported for its transiting exoplanet. The host star exhibits activity in terms of photometric variability, which is caused by the rotational modulation of the spots. Moreover, a periodic modulation has been discovered in transit timing of WASP-10 b, which could be a sign of an additional body perturbing the orbital motion of the transiting planet. We attempt to refine the physical parameters of the system, in particular the planetary radius, which is crucial for studying the internal structure of the transiting planet. We also determine new mid-transit times to confirm or refute observed anomalies in transit timing. We acquired high-precision light curves for four transits of WASP-10 b in 2010. Assuming various limb-darkening laws, we generated best-fit models and redetermined parameters of the system. The prayer-bead method and Monte Carlo simulations were used to derive error estimates. Three transit light curves exhibit signatures of the occultations of dark spots by the planet during its passage across the stellar disk. The influence of stellar activity on transit depth is taken into account while determining system parameters. The radius of WASP-10 b is found to be no greater than 1.03 Jupiter radii, a value significantly smaller than most previous studies indicate. We calculate interior structure models of the planet, assuming a two-layer structure with one homogeneous envelope atop a rock core. The high value of the WASP-10 b's mean density allows one to consider the planet's internal structure including 270 to 450 Earth masses of heavy elements. Our new mid-transit times confirm that transit timing cannot be explained by a constant period if all literature data points are considered. They are consistent with the ephemeris assuming a periodic variation of transit timing...
description: Accepted for publication in A&A
title: Stones, labour, and city walls: Modelling the social and economic cost of Greek and Etruscan city wall construction during the Archaic and Classical periods.
Creators: name: St Angelo, Dominick
Publisher: name: University of Liverpool Repository
Year: 2026

description: Abstract
City walls are among the most prominent surviving remnants of ancient settlements. They represent a substantial investment of resources, labour, and expenses for societies of the past, yet they remain one of the least explored aspects of the ancient economy. The significance of city walls and their meaning to the people who constructed them has often been overlooked by scholars. Limited attention has been given to the immense effort and time required to build such structures around a city. 
Ancient writers have provided scant written evidence about city walls, and scholarly focus has predominantly centred on the examination and study of temples, tombs, and other monumental buildings. 
This thesis aims to fill this gap in research by investigating the role of urbanization in relation to these monuments. Specifically, the study examines the form and construction of ancient city walls in modern-day Italy during the Archaic and Classical periods by using seven Greek and Etruscan test case cities. The research utilizes a version of Architectural Energetics (A.E.) to estimate the comparative labour costs involved in constructing walls across three regions of Italy: Magna Graecia, Sicily, and Etruria. The developed methodology allows for a systematic analysis of the construction stages and processes, providing a logical understanding of the building methods employed. The modelling process was designed to be adaptable, considering the available data from each of the sites and the diverse local resources. Through the assessment and analysis of the architectural evolution of each wall, a comprehensive dataset is generated. This dataset can be utilized to explore and compare the investment made in wall construction and the resulting cost implications for each settlement. Furthermore, the obtained data contributes to a deeper understanding of urbanization in the Mediterranean region during the 7th to 4th centuries B.C.
Noncommutative Common Cause Principles in Algebraic Quantum Field Theory
Creators: name: Hofer-Szabó, Gábor
name: Vecsernyés, Péter
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: States in algebraic quantum field theory "typically" establish correlation between spacelike separated events. Reichenbach's Common Cause Principle, generalized to the quantum field theoretical setting, offers an apt tool to causally account for these superluminal correlations. In the paper we motivate first why commutativity between the common cause and the correlating events should be abandoned in the definition of the common cause. Then we show that the Noncommutative Weak Common Cause Principle holds in algebraic quantum field theory with locally finite degrees of freedom. Namely, for any pair of projections A, B supported in spacelike separated regions V_A and V_B, respectively, there is a local projection C not necessarily commuting with A and B such that C is supported within the union of the backward light cones of V_A and V_B and the set {C, non-C} screens off the correlation between A and B.
Conference Discussion of the Nuclear Force
Creators: name: Gross, Franz
name: Cohen, Thomas D.
name: Epelbaum, Evgeny
name: Machleidt, Ruprecht
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Discussion of the nuclear force, lead by a round table consisting of T. Cohen, E. Epelbaum, R. Machleidt, and F. Gross (chair). After an invited talk by Machleidt, published elsewhere in these proceedings, brief remarks are made by Epelbaum, Cohen, and Gross, followed by discussion from the floor moderated by the chair. The chair asked the round table and the participants to focus on the following issues: (i) What does each approach (chiral effective field theory, large Nc, and relativistic phenomenology) contribute to our knowledge of the nuclear force? Do we need them all? Is any one transcendent? (ii) How important for applications (few body, nuclear structure, EMC effect, for example) are precise fits to the NN data below 350 MeV? How precise do these fits have to be? (iii) Can we learn anything about nonperturbative QCD from these studies of the nuclear force? The discussion presented here is based on a video recording made at the conference and transcribed afterward.
description: Discussion at the 21st European Conference on Few Body Problems (EFP21) held at Salamanca, Spain, 30 Aug - 3 Sept 2010
Nutzung geothermischer Energie in Wien
Creators: name: Voit Klaus
name: Götzl Gregor
Publisher: name: Zenodo
Year: 2023
Subjects: Geothermie
Grundwasser
Energieversorgung
Energiewende
Erdwärmesonde
Wärmegewinnung
Kältegewinnung

description: Die Energiewende ist derzeit eine der größten gesellschaftlichen Herausforderungen. Ein Umstieg von fossilen Energieträgern auf erneuerbare Energien ist deshalb für den Klimaschutz unabdingbar. Dabei nimmt die Geothermie eine zentrale Rolle ein. Sie nutzt die in der Erdkruste gespeicherte thermische Energie, die praktisch überall und nahezu unbegrenzt vorhanden, für Wärme- oder Kältegewinnung kontinuierlich abrufbar, und damit grundlastfähig ist (keine untertägigen oder saisonalen Schwankungen). Durch geringen Platzbedarf an der Oberfläche ist eine Nutzung zentral oder dezentral möglich bzw. finanziell sinnvoll. Urbane Siedlungsräume zeigen im Allgemeinen einen hohen Gesamtenergiebedarf mit entsprechender Grundlast, Flächen für erneuerbare Energien sind jedoch nur unzureichend verfügbar. In Wien wird daher der oberflächennahen Geothermie (Tiefen bis ≤ 300 m) mittels Erdwärmesonden oder der Nutzung von Grundwasser (GW) mit einer Wärmepumpe eine wichtige Rolle zugedacht.
Rare events, exponential hitting times and extremal indices via spectral perturbation
Creators: name: Keller, Gerhard
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We discuss how an eigenvalue perturbation formula for transfer operators of dynamical systems is related to exponential hitting time distributions and extreme value theory for processes generated by chaotic dynamical systems. We also list a number of piecewise expanding systems to which this general theory applies and discuss the prospects to apply this theory to some classes of piecewise hyperbolic systems.
description: 15 pages
Finding humour in the pain : directing Christopher Durang and Albert Innaurato's The Idiots Karamazov
Creators: name: McGregor, Chris
Publisher: name: University of British Columbia
Year: 2010

description: Finding Humour in the Pain-Directing Christopher Durang and Albert limaurato’s Play, The Idiots Karamazov examines the preparation, research, pre-production and rehearsal processes that went into staging The Idiots Karamazov at the University of British Columbia’s Frederic Wood Theatre from March l9 to 28, 2009. This paper is broken down into 4 chapters detailing my goals to achieve a successful and relevant production for today’s audience. My rehearsal process was to inspire and guide all artists involved to act upon their creative impulses and to make this production a collaborative effort. Chapter 1 includes a biography of both playwrights, outlining their influences and a brief historical account ofhow The Idiots Karamazov evolved from an 8mm student film to a full-length professional production at Yale Repertory Theater. Chapter 2 provides a directorial analysis of the text and detailed methods and philosophies in directing from several well-known academics and theatre artists. Chapter 3 is a detailed journal chronicling the pre-production process including several e-mail correspondences with playwright, Christopher Durang. Also included in this chapter are several entries detailing early meetings with designers, daily accounts of the rehearsal process, production meetings, and fmally a description of three performances I attended during the run. Chapter 4 is a refection ofmy fmal thoughts on the production, concluding with major shifts to my approach to the directing process. This purpose of this paper is to give the reader a clear understanding of the analytical and practical process involved with directing and staging Christopher Durang and Albert Innaurato’s play The Idiots Karamazov at the Frederic Wood Theatre.
Narrative development in the 4th, 7th, and 10th grades: the progression of the concept of characterization
Creators: name: MacLeod, Barbara Wigmore
Publisher: name: Education
Year: 2002
Subjects: subject: AC1 .T484 2002 W54
subject: Discourse analysis, Narrative
subject: Storytelling ability in children
subject: Cognitive styles in children
subject: Children - Writing

description: Bibliography: p. 115-125.
Nanoscale Metamaterial Optical Waveguides with Ultrahigh Refractive Indices
Creators: name: He, Yingran
name: He, Sailing
name: Gao, Jie
name: Yang, Xiaodong
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose deep-subwavelength optical waveguides based on metal-dielectric multilayer indefinite metamaterials with ultrahigh effective refractive indices. Waveguide modes with different mode orders are systematically analyzed with numerical simulations based on both metal-dielectric multilayer structures and the effective medium approach. The dependences of waveguide mode indices, propagation lengths and mode areas on different mode orders, free space wavelengths and sizes of waveguide cross sections are studied. Furthermore, waveguide modes are also illustrated with iso-frequency contours in the wave vector space in order to investigate the mechanism of waveguide mode cutoff for high order modes. The deep-subwavelength optical waveguide with a size smaller than λ0/50 and a mode area in the order of 10-4 λ02 is realized, and an ultrahigh effective refractive index up to 62.0 is achieved at the telecommunication wavelength. This new type of metamaterial optical waveguide opens up opportunities for various applications in enhanced light-matter interactions.
description: 22 pages, 8 figures
ورقة بحثية: تقارير الظل كأحد آليات حماية حقوق الانسان: دراسة الحالة المصرية 2010
Creators: name: N Meawad
Publisher: name: figshare
Year: 2020
Subjects: subject: 180114 Human Rights Law
subject: FOS: Law

description: يركز البحث على تقارير الظل باعتبارها احدى اليات حماية حقوق الانسان ويتناول تقارير الظل كآلية واثرها في حماية حقوق الانسان والتقارير المقدمة عن مصر في الاستعراض الدوري الشامل 2010 مع محاولة قياس اثرها على حماية حقوق الانسان والتطبيق على تقريرين احدهما صادر عن منظمة دولية والاخر صادر عن مجموعة منظمات محلية. تتلخص الاهمية العلمية في محاولة التوصل لسبل فعالة تنتهجها بعض تقارير الظل في طريق حماية حقوق الانسان وتتلخص اهمية الدراسة العملية في التعرف على تأثير تقارير الظل المصرية في حماية حقوق الانسان والقياس والتحليل لواقع تأثير تقارير الظل المصرية 2010خاصة تقرير منظمة العفو الدولية كتقرير دولي وتقرير ملتقى منظمات حقوق الإنسان المستقلة الذي يشمل عدد من المنظمات المحلية وهي الجمعية المصرية للنهوض بالمشاركة المجتمعية و جمعية حقوق الانسان لمساعدة السجناء ودار الخدمات النقابية والعمالية و الشبكة العربية لمعلومات حقوق الانسان و مؤسسة المرأة الجديدة والمبادرة المصرية للحقوق الشخصية ومجموعة المساعدة القانونية لحقوق الانسان و مركز الارض لحقوق الانسان ومركز القاهرة لدراسات حقوق الانسان و مركز النديم للعلاج والتأهيل النفسي لضحايا العنف ومركز اندلس لدراسات التسامح ومناهضة العنف ومركز هشام مبارك للقانون والمنظمة العربية للاصلاح الجنائي و مؤسسة حرية الفكر والتعبير والمركز المصري للحقوق الاقتصادية والاجتماعية اما بخصوص المشكلة البحثية فتتضح الحماية الدولية لحقوق الانسان في اطار الامم المتحدة في مظهرين رئيسيين احدهما ذو طبيعة موضوعية تتمثل في العديد من المواثيق الدولية وثانيهما ذو طبيعة هيكلية مؤسسية تتمثل في انشاء العديد من الاجهزة واللجان الرئيسية والفرعية داخل منظومة الامم المتحدة والتي تعني بتناول حقوق الانسان ومتابعة تطبيق الاتفاقيات الدولية النافذة في هذا المجال عبر مجموعة من الاليات تتسع لتشمل تلقي تقارير الدول ودراستها "التقارير الحكومية وتقارير الظل" وكذلك فحص الشكاوي المقدمة من الافراد او المجموعات ضد حكوماتهم بالاضافة الى تلقي البلاغات المقدمة من حكومات الدول ضد بعضها البعض ومن الاجهزة واللجان سالفة الذكر مجلس حقوق الانسان ولدى الملف المصري سابق خبرة في تقديم تقارير الظل في الاستعراض الدوري الشامل.
Fixed Points for Stochastic Open Chemical Systems
Creators: name: Malyshev, V. A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82C21

description: In the first part of this paper we give a short review of the hierarchy of stochastic models, related to physical chemistry. In the basement of this hierarchy there are two models --- stochastic chemical kinetics and the Kac model for Boltzman equation. Classical chemical kinetics and chemical thermodynamics are obtained as some scaling limits in the models, introduced below. In the second part of this paper we specify some simple class of open chemical reaction systems, where one can still prove the existence of attracting fixed points. For example, Michaelis\tire Menten kinetics belongs to this class. At the end we present a simplest possible model of the biological network. It is a network of networks (of closed chemical reaction systems, called compartments), so that the only source of nonreversibility is the matter exchange (transport) with the environment and between the compartments. Keywords: chemical kinetics, chemical thermodynamics, Kac model, mathematical biology
Enhancement of Image Resolution by Binarization
Creators: name: Mukherjee, Aroop
name: Kanrar, Soumen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: Image segmentation is one of the principal approaches of image processing. The choice of the most appropriate Binarization algorithm for each case proved to be a very interesting procedure itself. In this paper, we have done the comparison study between the various algorithms based on Binarization algorithms and propose a methodologies for the validation of Binarization algorithms. In this work we have developed two novel algorithms to determine threshold values for the pixels value of the gray scale image. The performance estimation of the algorithm utilizes test images with, the evaluation metrics for Binarization of textual and synthetic images. We have achieved better resolution of the image by using the Binarization method of optimum thresholding techniques.
description: 5 pages, 8 figures
تقارير الظل كأحد آليات حماية حقوق الانسان: دراسة الحالة المصرية 2010
Creators: name: N Meawad
Publisher: name: figshare
Year: 2020
Subjects: subject: 180114 Human Rights Law
subject: FOS: Law

description: يركز البحث على تقارير الظل باعتبارها احدى اليات حماية حقوق الانسان ويتناول تقارير الظل كآلية واثرها في حماية حقوق الانسان والتقارير المقدمة عن مصر في الاستعراض الدوري الشامل 2010 مع محاولة قياس اثرها على حماية حقوق الانسان والتطبيق على تقريرين احدهما صادر عن منظمة دولية والاخر صادر عن مجموعة منظمات محلية. تتلخص الاهمية العلمية في محاولة التوصل لسبل فعالة تنتهجها بعض تقارير الظل في طريق حماية حقوق الانسان وتتلخص اهمية الدراسة العملية في التعرف على تأثير تقارير الظل المصرية في حماية حقوق الانسان والقياس والتحليل لواقع تأثير تقارير الظل المصرية 2010خاصة تقرير منظمة العفو الدولية كتقرير دولي وتقرير ملتقى منظمات حقوق الإنسان المستقلة الذي يشمل عدد من المنظمات المحلية وهي الجمعية المصرية للنهوض بالمشاركة المجتمعية و جمعية حقوق الانسان لمساعدة السجناء ودار الخدمات النقابية والعمالية و الشبكة العربية لمعلومات حقوق الانسان و مؤسسة المرأة الجديدة والمبادرة المصرية للحقوق الشخصية ومجموعة المساعدة القانونية لحقوق الانسان و مركز الارض لحقوق الانسان ومركز القاهرة لدراسات حقوق الانسان و مركز النديم للعلاج والتأهيل النفسي لضحايا العنف ومركز اندلس لدراسات التسامح ومناهضة العنف ومركز هشام مبارك للقانون والمنظمة العربية للاصلاح الجنائي و مؤسسة حرية الفكر والتعبير والمركز المصري للحقوق الاقتصادية والاجتماعية اما بخصوص المشكلة البحثية فتتضح الحماية الدولية لحقوق الانسان في اطار الامم المتحدة في مظهرين رئيسيين احدهما ذو طبيعة موضوعية تتمثل في العديد من المواثيق الدولية وثانيهما ذو طبيعة هيكلية مؤسسية تتمثل في انشاء العديد من الاجهزة واللجان الرئيسية والفرعية داخل منظومة الامم المتحدة والتي تعني بتناول حقوق الانسان ومتابعة تطبيق الاتفاقيات الدولية النافذة في هذا المجال عبر مجموعة من الاليات تتسع لتشمل تلقي تقارير الدول ودراستها "التقارير الحكومية وتقارير الظل" وكذلك فحص الشكاوي المقدمة من الافراد او المجموعات ضد حكوماتهم بالاضافة الى تلقي البلاغات المقدمة من حكومات الدول ضد بعضها البعض ومن الاجهزة واللجان سالفة الذكر مجلس حقوق الانسان ولدى الملف المصري سابق خبرة في تقديم تقارير الظل في الاستعراض الدوري الشامل.
Decoupling between Field-instabilities of Antiferromagnetism and Pseudo-metamagnetism in Rh-doped CeRu2Si2 Kondo Lattice
Creators: name: Aoki, Dai
name: Paulsen, Carley
name: Kotegawa, Hisashi
name: Hardy, Frederic
name: Meingast, Christoph
name: Haen, Pierre
name: Boukahil, Mounir
name: Knafo, William
name: Ressouche, Eric
name: Raymond, Stephane
name: Flouquet, Jacques
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Doping Kondo lattice system CeRu2Si2 with Rh-8% (Ce(Ru0.92Rh0.08)2Si2) leads to drastic consequences due to the mismatch of the lattice parameters between CeRu2Si2 and CeRh2Si2. A large variety of experiments clarifies the unusual properties of the ground state induced by the magnetic field from longitudinal antiferromagnetic (AF) mode at H = 0 to polarized paramagnetic phase in very high magnetic field. The separation between AF phase, paramagnetic phase and polarized paramagnetic phase varying with temperature, magnetic field and pressure is discussed on the basis of the experiments down to very low temperature. Similarities and differences between Rh and La substituted alloys are discussed with emphasis on the competition between transverse and longitudinal AF modes, and ferromagnetic fluctuations.
description: 10 pages, 21 figures, accepted for publication in J. Phys. Soc. Jpn
Agri-Photovoltaik - Doppelnutzung agrarischer Flächen
Creators: name: Krexner, Theresa
name: Kral Iris
name: Bauer Alexander
name: Mikovits Christian
name: Schmidt Johannes
name: Schönhart Martin
name: Schmid Erwin
name: Ressar Kim
name: Schauppenlehner Thomas
Publisher: name: Zenodo
Year: 2022
Subjects: Doppelnutzung
PV-Freiflächenanlagen
Dekarbonisierung
Ökobilanzierung
Technisierung
Landwirtschaft
doppelte Flächennutzung

description: BOKU-Energiecluster Factsheet

Agri-Photovoltaik (APV) beschreibt die zeitgleiche Nutzung landwirtschaftlicher Flächen zur Produktion von landwirtschaftlichen Produkten sowie zur Stromerzeugung mittels PV-Modulen. Diese Kombination kann den Konflikt um die Verwendung von Agrarflächen (PV-Freiflächenanlagen vs. Landwirtschaft) entschärfen und eine ressourceneffiziente Lösung darstellen. Einerseits kann Agri-Photovoltaik in bestehende, landwirtschaftliche Gebäude integriert werden, andererseits ist eine Kombination mit Acker-/Gemüse-/Feldfutterbau, aber auch mit Sonderkulturen (Obst-/Weinbau) und Dauergrünland möglich.
title: Физико-геологическое моделирование
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2023

description: В учебном пособии изложены принципы и методика физико-геологического моделирования. Рассмотрены примеры моделей разных масштабов и месторождений различных полезных ископаемых для разных геолого-геофизических обстановок. Подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Учебное пособие предназначено для студентов укрупненной группы специальностей и направлений подготовки «Прикладная геология, горное дело, нефтегазовое дело и геодезия», изучающих дисциплину «Физико-геологическое моделирование».
Nucleon form factors and spin content in a quark-diquark model with a pion cloud
Creators: name: Cloet, Ian C.
name: Miller, Gerald A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We propose a new model of the nucleon in which quark-diquark configurations immersed in a pion cloud are treated in a manner consistent with Poincaré invariance. With suitably chosen parameters, the computations employing this model reproduce the measured electromagnetic form factors and the quark-spin contribution to the total nucleon angular momentum.
description: 10 pages, 11 figures
On Leakage in Machine Learning Pipelines
Creators: name: Sasse, Leonard
name: Nicolaisen-Sobesky, Eliana
name: Dukart, Jürgen
name: Eickhoff, Simon B.
name: Götz, Michael
name: Hamdan, Sami
name: Komeyer, Vera
name: Kulkarni, Abhijit
name: Lahnakoski, Juha
name: Love, Bradley C.
name: Raimondo, Federico
name: Patil, Kaustubh R.
Publisher: name: Forschungzentrum Jülich
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: arXiv (2023). doi:10.48550/ARXIV.2311.04179
description: Machine learning (ML) provides powerful tools for predictive modeling. ML's popularity stems from the promise of sample-level prediction with applications across a variety of fields from physics and marketing to healthcare. However, if not properly implemented and evaluated, ML pipelines may contain leakage typically resulting in overoptimistic performance estimates and failure to generalize to new data. This can have severe negative financial and societal implications. Our aim is to expand understanding associated with causes leading to leakage when designing, implementing, and evaluating ML pipelines. Illustrated by concrete examples, we provide a comprehensive overview and discussion of various types of leakage that may arise in ML pipelines.
description: Published by arXiv
Operating critical machine learning models in resource constrained regimes
Creators: name: Selvan, Raghavendra
name: Schön, Julian
name: Dam, Erik B
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The accelerated development of machine learning methods, primarily deep learning, are causal to the recent breakthroughs in medical image analysis and computer aided intervention. The resource consumption of deep learning models in terms of amount of training data, compute and energy costs are known to be massive. These large resource costs can be barriers in deploying these models in clinics, globally. To address this, there are cogent efforts within the machine learning community to introduce notions of resource efficiency. For instance, using quantisation to alleviate memory consumption. While most of these methods are shown to reduce the resource utilisation, they could come at a cost in performance. In this work, we probe into the trade-off between resource consumption and performance, specifically, when dealing with models that are used in critical settings such as in clinics.
description: Accepted to the Resource Efficient Medical Image Analysis workshop at MICCAI-2023. Source code available at https://github.com/raghavian/redl
Perfectionism and positive and negative outcomes : can achievement motivation and conscientiousness account for "adaptive" perfectionism?
Creators: name: Blasberg, Jonathan Shael
Publisher: name: University of British Columbia
Year: 2010

description: We explored the assertion some have made that perfectionism can be adaptive (see J. Stoeber & K. Otto, 2006). Others have considered that what has been called adaptive perfectionism resembles a combination of achievement motivation and conscientiousness (P. L. Hewitt & G. L. Flett, 2008; T. Greenspon, 2000) but this has yet to be tested empirically. In a sample of 273 university students we found that three previously used operationalizations of “adaptive” perfectionism failed to correlate positively with self-esteem or life satisfaction. “Adaptive” perfectionism did correlate with positive affect, but when achievement motivation and conscientiousness were covaried the relationship ceased to be significant. “Adaptive” perfectionism also correlated with increased symptoms of depression and anxiety. Because some have conceptualized “adaptive” perfectionism as a interaction between high standard setting and low ideal-actual performance discrepancy (K. G. Rice & J. S. Ashby, 2007), we used a regression analysis to test for this interaction and found it did not significantly predict positive affect, life satisfaction and self-esteem. The implications of these findings are discussed.
PALP - a User Manual
Creators: name: Braun, Andreas P.
name: Knapp, Johanna
name: Scheidegger, Emanuel
name: Skarke, Harald
name: Walliser, Nils-Ole
Publisher: name: arXiv
Year: 2012
Subjects: subject: Algebraic Geometry (math.AG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This article provides a complete user's guide to version 2.1 of the toric geometry package PALP by Maximilian Kreuzer and others. In particular, previously undocumented applications such as the program nef.x are discussed in detail. New features of PALP 2.1 include an extension of the program mori.x which can now compute Mori cones and intersection rings of arbitrary dimension and can also take specific triangulations of reflexive polytopes as input. Furthermore, the program nef.x is enhanced by an option that allows the user to enter reflexive Gorenstein cones as input. The present documentation is complemented by a Wiki which is available online.
description: 71 pages, to appear in "Strings, Gauge Fields, and the Geometry Behind - The Legacy of Maximilian Kreuzer". PALP Wiki available at http://palp.itp.tuwien.ac.at/wiki/index.php/Main_Page
Black hole stereotyping: Induced gravito-static polarization
Creators: name: Kol, Barak
name: Smolkin, Michael
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the black hole effective action and define its static subsector. We determine the induced gravito-static polarization constants (electric Love numbers) of static black holes (Schwarzschild) in an arbitrary dimension, namely the induced mass multipole as a result of an external gravitational field. We demonstrate that in 4d these constants vanish thereby settling a disagreement in the literature. Yet in higher dimensions these constants are non-vanishing, thereby disproving (at least in d>4) speculations that black holes have no effective couplings beyond the point particle action. In particular, when l/(d-3) is half integral these constants demonstrate a (classical) renormalization flow consistent with the divergences of the effective field theory. In some other cases the constants are negative indicating a novel non-spherical instability. The theory of hypergeometric functions plays a central role.
description: 25 pages, 7 figures
Venus Vom Mars Aus Gesehen (Lokale Extrema Der Scheinbaren Helligkeit Von 1976-2014)
Creators: name: Schröer, Harald
Publisher: name: Zenodo
Year: 2016
Subjects: scheinbar ,Helligkeit,Größenklasse,Mars, Venus ,Extremum,Tabelle,Reflektion,Phase,Durchmesser,Elongation,Entfernung,Winkelabstand,Abstand

description: Tabellarische Darstellung der lokalen Extrema der scheinbaren Helligkeit von der Venus vom Mars aus gesehen für die Jahre 1976-2014
description: German
High power, continuous-wave, single frequency fiber amplifier at 1091 nm and frequency doubling to 545.5 nm
Creators: name: Stappel, M.
name: Steinborn, R.
name: Kolbe, D.
name: Walz, J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a high power single-frequency ytterbium fiber amplifier system with an output power of 30 W at 1091 nm. The amplifier system consists of two stages, a preamplifier stage in which amplified spontaneous emission is efficiently suppressed (>40 dB) and a high power amplifier with an efficiency of 52 %. Two different approaches of frequency doubling are compared. We achieve 8.6 W at 545.5 nm by single-pass frequency doubling in a MgO-doped periodically poled stoichiometric LiTaO3 and up to 19.3 W at 545.5 nm by frequency doubling with a lithium-triborate (LBO) crystal in an external enhancement cavity.
Neutron Reflectometer with Polarization Option at the Budapest Neutron Centre
Creators: name: Bottyán, L.
name: Merkel, D. G.
name: Nagy, B.
name: Major, J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The ever increasing need for product advancement and miniaturization keeps thin film assemblies, membranes, magnetic and non-magnetic multilayer and patterned heterostructures in the limelight of material science and technological development. A number of thin film and surface characterization methods have emerged recently to meet the new challenges. The increased interest in magnetic thin film analytical instruments - mainly triggered by the discovery of the giant magnetoresistance and related phenomena1 - resulted in a boom of PNR studies as well as of the construction of a number of new neutron reflectometers with polarization option at neutron sources all over the world. Here we report on the design, construction and operation parameters and first example uses of the "Grazing Incidence Neutron Apparatus" (GINA) a recently installed neutron reflectometer at the Budapest Neutron Centre (BNC), Hungary.
Polycrystallinity enhances stress build-up around ice
Creators: name: Gerber, Dominic
name: Wilen, Lawrence A.
name: Dufresne, Eric R.
name: Style, Robert W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Damage caused by freezing wet, porous materials is a widespread problem, but is hard to predict or control. Here, we show that polycrystallinity makes a great difference to the stress build-up process that underpins this damage. Unfrozen water in grain-boundary grooves feeds ice growth at temperatures below the freezing temperature, leading to the fast build-up of localized stresses. The process is very variable, which we ascribe to local differences in ice-grain orientation, and to the surprising mobility of many grooves -- which further accelerates stress build-up. Our work will help understand how freezing damage occurs, and in developing accurate models and effective damage-mitigation strategies.
description: 4 figures
Overall Technologies to Enhance Efficiency Accuracy in Turbines
Creators: name: Rosa, Diego Sanchez de la
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 409902
subject: Engineering instrumentation
classificationCode: 401204
subject: Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics)
classificationCode: 511002
subject: Instruments and techniques

description: Transportation and energy production industries strongly rely on improvements in gas turbine performance. The quantification of these improvements is dependent on the accuracy of the measurements performed during testing. An increase of 0.5\% in efficiency is sufficient to secure a new development program worth millions of dollars, but in the case of temperature measurements, uncertainties below 0.5 K are required, which presents a challenge. This work selects heat flux estimation and total temperature measurement uncertainties as major contributors for efficiency uncertainty.Heat flux measurements are critical to evaluate the impact on the efficiency. Additionally, thermal fatigue in turbine airfoils defines the life cycle of the engine core. This work performs an estimation of the heat transfer via a simplified numerical model that uses infrared (IR) measurements in the surface of the casing to predict the temperature of the passage wall. The model is validated with real cool-down data of the turbine to yield results within a 10\% of the actual temperature.Total temperature measurement suffers from errors due to heat transfer effects in the probe. Two dominant sources of errors are convection and conduction between the thermocouple wires, the probe support, and the flow. These effects can be treated in two different categories: the velocity error, created by a non-isentropic reduction of the flow velocity upstream the thermocouple junction, and the thermal equilibrium effects between the junction and the probe support, involving heat transfer through the wire to the shield and the probe stem due to temperature differences between each component (the so-called \emph{conduction error}). An open jet stand is used to evaluate the effects of velocity error at various Mach numbers. The conduction error is addressed with the design and manufacturing of dual-wire thermocouple probes. The readings from two wires with different length-to-diameter ratios are used to correct for the flow total temperature. This probe yielded a recovery factor of 0.99 +/- 0.01 at Mach 0.6.
Generation of biaxially accelerating static Airy light-sheets with 3D-printed freeform micro-optics
Creators: name: Taege, Yanis
name: Winter, Tim Samuel
name: Schulz, Sophia Laura
name: Messerschmidt, Bernhard
name: Ataman, Çağlar
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: One-dimensional Airy beams allow the generation of thin light-sheets without scanning, simplifying the complex optical arrangements of light-sheet microscopes (LSM) with an extended field-of-view (FOV). However, their uniaxial acceleration limits the maximum numerical aperture of the detection objective in order to keep both the active and inactive axes within the depth-of-field. This problem is particularly pronounced in miniaturized LSM implementations, such as those for endomicroscopy or multi-photon neural imaging in freely-moving animals using head-mounted miniscopes. We propose a new method to generate a static Airy light-sheet with biaxial acceleration, based on a novel phase profile. This light-sheet has the geometry of a spherical shell whose radius of curvature can be designed to match the field curvature of the micro-objective. We present an analytical model for the analysis of the light-sheet parameters and verify it by numerical simulations in the paraxial regime. We also discuss a micro-optical experimental implementation combining gradient-index optics with a 3D-nano-printed, fully refractive phase plate. The results confirm that we are able to match detection curvatures with radii in the 1.5 to 2 mm range.
description: 13 pages, 6 figures, 2 tables. submitted
The First Search For Exoplanet Weather
Creators: name: Vos, Johanna
name: Biller, Beth
name: Allers, Katelyn
name: Bonavita, Mariangela
name: Buenzli, Esther
name: Brandner, Wolfgang
name: Homeier, Derek
name: Henning, Thomas
name: Kopytova, Taisiya
name: Liu, Michael
name: Manjavacas, Elena
name: Schlieder, Joshua
Publisher: name: Zenodo
Year: 2016
Subjects: cool stars
weather
exoplanet
brown dwarf

description: Periodic variability due to rotation and patchy cloud cover has been detected in L and T brown dwarfs, with higher variability amplitudes observed at the L/T transition. Directly imaged planets occupy the same temperature regime as L and T type brown dwarfs and are predicted to exhibit similar variability.  We are currently conducting the first survey of weather patterns on free-floating young planetary mass objects and young low mass brown dwarfs with NTT SofI. We aim to discover and characterise variability in these objects and to constrain the fraction that show periodic variability due to rotationally modulated patchy cloud cover. A comparison of our survey with surveys of field brown dwarfs will provide insight into the effects of surface gravity on cloud structure. Here I will present some preliminary results from this survey.
description: Poster #137
description: {"references": ["Biller, B. A., Vos, J., Bonavita, M., et al. 2015, ApJ, 813, L23", "Buenzli E. et al., 2012, Ap. J. L., 760, L31", "Liu M. C. et al., 2013, Ap. J. L., 777, L20", "Radigan J., 2014, Ap. J., 797, 120", "Metchev, S. A., Heinze, A., Apai, D., et al. 2015, ApJ, 799, 154"]}
Decarbonizing Transport in the European Union: Emission Performance Standards and the Perspectives for a European Green Deal
Creators: name: Haas, Tobias
name: Sander, Hendrik
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: European Union
subject: EU
subject: fleet limits
subject: Green Deal
subject: lobbyism
subject: transport policy
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft
subject: 300 Sozialwissenschaften::380 Handel, Kommunikation, Verkehr::380 Handel, Kommunikation, Verkehr

description: The transport sector is a major driver of climate change both globally and in the European Union (EU). While the EU as a whole is showing declining carbon emissions, transport-related emissions are higher than in 1990. Car traffic is responsible for around 12 percent of the EU’s total greenhouse gas emissions. EU Commission President Ursula von der Leyen underlined the efforts to strengthen the decarbonization of the EU at the end of 2019 by publishing the European Green Deal (EGD) communication. In this paper, we analyze the controversy surrounding the emission performance standards for cars adopted in spring 2019. Car manufacturers must reduce the average carbon emissions of their fleets by 37.5% between 2021 and 2030. In this respect, the new emission performance standards are more ambitious than the previous ones. However, our argument is that without a major shift in the balance of power, extensive decarbonization and a departure from car-centered transport development will not be possible. Therefore, it is crucial for mobility research to critically engage with lobbying power in the EU and with concepts such as environmental leadership, which often underexpose the structural power of incumbent actors and existing path dependencies.
Differential cross section and analysing power of the pp -> {pp\}_s pi0 reaction at 353 MeV
Creators: name: Tsirkov, D.
name: Azaryan, T.
name: Baru, V.
name: Chiladze, D.
name: Dymov, S.
name: Dzyuba, A.
name: Gebel, R.
name: Goslawski, P.
name: Hanhart, C.
name: Hartmann, M.
name: Kacharava, A.
name: Khoukaz, A.
name: Komarov, V.
name: Kulessa, P.
name: Kulikov, A.
name: Kurbatov, V.
name: Lensky, V.
name: Lorentz, B.
name: Macharashvili, G.
name: Mchedslishvili, D.
name: Mielke, M.
name: Mikirtytchiants, S.
name: Merzliakov, S.
name: Nioradze, M.
name: Ohm, H.
name: Papenbrock, M.
name: Rathmann, F.
name: Serdyuk, V.
name: Shmakova, V.
name: Stroeher, H.
name: Uzikov, Yu.
name: Valdau, Yu.
name: Wilkin, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In order to establish links between p-wave pion production in nucleon-nucleon collisions and low energy three-nucleon scattering, an extensive programme of experiments on pion production is currently underway at COSY-ANKE. The final proton pair is detected at very low excitation energy, leading to an S-wave diproton, denoted here as {pp}_s. We now report on measurements of the differential cross section and analysing power of the pol{p}p->{pp}_s pi^0$ reaction at 353 MeV. Both observables can be described in terms of s- and d-wave pion production and, by using the phase information from elastic pp scattering, unique solutions can be obtained for the corresponding amplitudes. This information is vital for the partial wave decomposition of the corresponding pn->{pp}_s pi^- reaction and hence for the extraction of the p-wave terms.
description: The interested reader is advised to study also the paper on pi minus production by S.Dymov et al., which has also been submitted to the arXiv