cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Real time assimilation of HF radar currents into a coastal ocean model
Creators: name: Breivik, Øyvind
name: Saetra, Øyvind
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences

description: A real time assimilation and forecasting system for coastal currents is presented. The purpose of the system is to deliver current analyses and forecasts based on assimilation of high frequency radar surface current measurements. The local Vessel Traffic Service monitoring the ship traffic to two oil terminals on the coast of Norway received the analyses and forecasts in real time. A new assimilation method based on optimal interpolation is presented where spatial covariances derived from an ocean model are used instead of simplified mathematical formulations. An array of high frequency radar antennae provide the current measurements. A suite of nested ocean models comprise the model system. The observing system is found to yield good analyses and short range forecasts that are significantly improved compared to a model twin without assimilation. The system is fast; analysis and six hour forecasts are ready at the Vessel Traffic Service 45 minutes after acquisition of radar measurements.
description: 15 figures, one table
Metacognition and Blended Learning: Myths and Thruths about Learning Autonomy in Higher Education
Creators: name: Fernandes, Joana
name: Chaves, Rita
Publisher: name: Zenodo
Year: 2019
Subjects: Autonomy, metacognition, Blended Learning, Higher Education

description: In the last two decades, the concept of blended learning has taken on a strong role in the Portuguese Higher Education scene, due to the transformative process that led institutions to define educational scenarios for a virtually connected society. At an international level, the scenarios and stages of the diachronic evolution of this process have had their own rhythms and outlines, with the North American reality being clearly distinct from the European one (Norberg & Jahke, 2014, p.251). Nevertheless, it is possible to identify a common denominator. The movement towards technological incorporation in Higher Education was permeated by strong political-economic motivations, driven by the need to extend capitalism to a digital culture based on knowledge. In this context, it was believed that the foundations to student autonomy would be consolidated, leading to a continuous process of autonomous search for knowledge and promotion of independence in the learning process. But is this assumption still a myth? Our main aim is to appraise the strategies that students use to take control of their own learning, seeking to perceive whether they remain tethered to the passive role that they have traditionally been assigned, remaining "distrustful of the idea that they should set learning targets, select learning materials and activities, and evaluate learning outcomes." (Little, 2007, p. 17) or if, on the contrary, they show autonomous learning skills. To this end, we will present the results obtained in a first exploratory research developed on the basis of a mixed methodology approach, supported by a case study and the collection of data by questionnaire, with two groups of students, with the objective of identifying the main motivations, difficulties and facilitating factors for autonomous learning. In this context, we intend to demonstrate that subsequently to the last phase of technological development and immersion in a digital environment, investment in the development of student autonomy remains crucial. Blended learning ˗ assumed as a model of teaching and learning, anchored in a multimodal, multilinear and flexible redesign ˗ is an invaluable opportunity, in parallel with the development of metacognition, for the enhancement of autonomy. Metacognitive strategies (as understood by Anderson, 2008 and Oxford, 1990) allow students to reflect upon the whole learning process, leading them towards the path of autonomy. Enable GingerCannot connect to Ginger Check your internet connection
 or reload the browserDisable in this text fieldRephraseRephrase current sentence2Edit in Ginger×
Bases in coset conformal field theory from AGT correspondence and Macdonald polynomials at the roots of unity
Creators: name: Belavin, A. A.
name: Bershtein, M. A.
name: Tarnopolsky, G. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We continue our study of the AGT correspondence between instanton counting on C^2/Z_p and Conformal field theories with the symmetry algebra A(r,p). In the cases r=1, p=2 and r=2, p=2 this algebra specialized to: A(1,2)=H+sl(2)_1 and A(2,2)=H+sl(2)_2+NSR. As the main tool we use a new construction of the algebra A(r,2) as the limit of the toroidal gl(1) algebra for q,t tend to -1. We claim that the basis of the representation of the algebra A(r,2) (or equivalently, of the space of the local fields of the corresponding CFT) can be expressed through Macdonald polynomials with the parameters q,t go to -1. The vertex operator which naturally arises in this construction has factorized matrix elements in this basis. We also argue that the singular vectors of the $\mathcal{N}=1$ Super Virasoro algebra can be realized in terms of Macdonald polynomials for a rectangular Young diagram and parameters q,t tend to -1.
description: 34 pages, v2: references added, misprints corrected; v3: exposition improved, new section inserted; v4: misprints corrected, Propositions 3.1,3.2,4.1 are called Conjectures, new subsection 5.3 were included, reference added. Version for JHEP
ANATOMY OF THE GASTROINTESTINAL TRACT: INSIGHTS INTO DIGESTIVE SYSTEM DISORDERS
Creators: name: Salma Osman Taha
name: Abeir Bashir Hasan
name: Islam Mohammedien Abbas Salih
name: Asmaa F. A. Dawood
Publisher: name: Zenodo
Year: 2023
Subjects: GI, Common Digestive System Disorders, Treatment and Management.

description: Abstract 
The gastrointestinal (GI) tract plays a pivotal role in the digestion and absorption of nutrients and is a complex system comprised of several organs and tissues. This research paper provides an in-depth exploration of the anatomy of the GI tract, emphasizing its various components and their functions. Additionally, it delves into the mechanisms underlying common digestive system disorders, offering insights into the causes, symptoms, and potential treatments. A comprehensive understanding of the GI tract's anatomy is vital for healthcare professionals and researchers striving to diagnose and manage digestive disorders effectively.
Maximum size of reverse-free sets of permutations
Creators: name: Cibulka, Josef
Publisher: name: arXiv
Year: 2012
Subjects: subject: Combinatorics (math.CO)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05D05

description: Two words have a reverse if they have the same pair of distinct letters on the same pair of positions, but in reversed order. A set of words no two of which have a reverse is said to be reverse-free. Let F(n,k) be the maximum size of a reverse-free set of words from [n]^k where no letter repeats within a word. We show the following lower and upper bounds in the case n >= k: F(n,k) \in n^k k^{-k/2 + O(k/log k)}. As a consequence of the lower bound, a set of n-permutations each two having a reverse has size at most n^{n/2 + O(n/log n)}.
description: 10 pages
On the role of Collins effect in the single spin asymmetry A_N in p(transv. polarized) p --> h X processes
Creators: name: Anselmino, M.
name: Boglione, M.
name: D'Alesio, U.
name: Leader, E.
name: Melis, S.
name: Murgia, F.
name: Prokudin, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The much debated issue of the transverse single spin asymmetry A_N observed in the inclusive large P_T production of a single hadron in pp interactions, p(transv. polarized) p --> pion X, is considered in a TMD factorization scheme. A previous result [1,2] stating that the maximum contribution of the Collins effect is strongly suppressed, is revisited, correcting a numerical error. New estimates are given, adopting the Collins functions recently extracted from SIDIS and e+e- data, and phenomenological consequences are discussed.
description: RevTeX4, 11 pages, 6 eps figures
Voyages et voyageurs au Moyen Age. XXVIe Congrès de la Société des Historiens Médiévistes de l'Enseignement Supérieur Public (Limoges-Aubazine, mai 1995), 1996
Creators: name: Herbers, Klaus
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 25 Nr. 1 (1998)
Joachim Ehlers, Heribert Müller, Bernd Schneidmüller (Hrsg.), Die französischen Könige des Mittelalters von Odo (888) bis Karl VIII. (1498), 1996
Creators: name: Schnerb, Bertrand
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 25 Nr. 1 (1998)
A STUDY ON E-BANKING AWARENESS AND ADOPTION IN RURAL HARYANA
Creators: name: Dr. Kavita A Jain*, Nitika** & Yashika***
Publisher: name: Zenodo
Year: 2023

description: The broad use of electronic banking (sometimes called "e-banking") is a significant development regarding the banking system's convenience and efficacy. Unique challenges have slowed the adoption of e-banking systems in rural areas like Haryana, India. This study looks at the current state of electronic banking knowledge and adoption in Haryana's most remote areas. The essay considers the underlying economic and social factors at play. This study synthesises academic literature, official reports, and data on financial inclusion to offer light on the critical factors that affect the spread of online banking in rural areas. This article explores the foundational components of e-banking, including awareness campaigns, instructional initiatives, and the underlying infrastructure. Lack of technological knowledge, trust issues, and the digital divide are only a few of the issues the study shows that impede wider adoption. By synthesising data from many studies, this report thoroughly evaluates the state of online banking in remote areas of Haryana. It also describes the disconnect between the accessibility and use of these options. In conclusion, it offers policymakers, financial institutions, and other stakeholders practical recommendations for increasing the use and effectiveness of e-banking services in these unserved areas.
Rajko Bratož (Hrsg.), Westillyricum und Nordostitalien in der spätrömischen Zeit. Zahodni Ilirik in severovzhodna Italia v poznorimski dobi, 1996
Creators: name: Gschaid, Max
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 25 Nr. 1 (1998)
A three-sphere swimmer for flagellar synchronization
Creators: name: Polotzek, Katja
name: Friedrich, Benjamin M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: In a recent letter (Friedrich et al., Phys. Rev. Lett. 109:138102, 2012), a minimal model swimmer was proposed that propels itself at low Reynolds numbers by a revolving motion of a pair of spheres. The motion of the two spheres can synchronize by virtue of a hydrodynamic coupling that depends on the motion of the swimmer, but is rather independent of direct hydrodynamic interactions. This novel synchronization mechanism could account for the synchronization of a pair of flagella, e.g. in the green algae Chlamydomonas. Here, we discuss in detail how swimming and synchronization depend on the geometry of the model swimmer and compute the swimmer design for optimal synchronization. Our analysis highlights the role of broken symmetries for swimming and synchronization.
description: 25 pages, 4 color figures, provisionally accepted for publication in the New Journal of Physics
ANÁLISE DOS PREÇOS DE COMBUSTÍVEIS NO BRASIL
Creators: name: Pereira, Cyro Henrique Azevedo
name: Gaboardi, Giovanna Morghett
name: Menegon, Leonardo da Cunha
name: Grobman, Ricardo Arippol
Publisher: name: Zenodo
Year: 2023

description: Um estudo sobre a evolução dos preços de combustíveis no Brasil.
Close relationships: A study of mobile communication records
Creators: name: Palchykov, Vasyl
name: Kertész, János
name: Dunbar, Robin I. M.
name: Kaski, Kimmo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Mobile phone communication as digital service generates ever-increasing datasets of human communication actions, which in turn allow us to investigate the structure and evolution of social interactions and their networks. These datasets can be used to study the structuring of such egocentric networks with respect to the strength of the relationships by assuming direct dependence of the communication intensity on the strength of the social tie. Recently we have discovered that there are significant differences between the first and further "best friends" from the point of view of age and gender preferences. Here we introduce a control parameter $p_{\rm max}$ based on the statistics of communication with the first and second "best friend" and use it to filter the data. We find that when $p_{\rm max}$ is decreased the identification of the "best friend" becomes less ambiguous and the earlier observed effects get stronger, thus corroborating them.
description: 11 pages, 7 figures
Widerständige Differenz
Creators: name: Leonhardt, Christian
name: Nonhoff, Martin
Publisher: name: Budrich
Year: 2019
Subjects: subject: Widerstand
subject: soziale Bewegung
subject: Alterglobalisierungsbewegung
subject: Occupy Wall Street
subject: Hegemonie
subject: Gegenhegemonie
subject: Post-Anarchismus
subject: Demokratie
subject: 320

description: Dass soziale Bewegungen eine transnationale Dimension besitzen können, ist nichts Neues. In Bezug auf die jüngsten sozialen Bewegungen wie Occupy Wall Street kann man diese aber nur verstehen, wenn man von einem Widerstandsbegriff ausgeht, der die von diesen Bewegungen aufgeworfene Frage zu alternativen demokratischen Praxen miteinbezieht. Hier zeigt sich, dass Widerstand zwischen den Polen gegenhegemonialer Institutionalisierung und nicht-integrativer Präfiguration oszilliert und selbst Ergebnis einer Auseinandersetzung auf einem umkämpften Bewegungsterrain ist. Die Spannung zwischen gegenhegemonialer Institutionalisierung und nicht-integrativer Präfiguration nennen wir widerständige Differenz. Diesen Begriff entwickeln wir zunächst entlang Überlegungen von Ernesto Laclau und Chantal Mouffe, post-anarchistischer Ansätze und ihrer gegenseitigen Kritik aneinander. Daraufhin können wir zeigen, dass sich bei den jüngsten sozialen Bewegungen die transnationale Dimension insbesondere auf die nicht-integrative Präfiguration alternativer demokratischer Lebensweisen bezieht, wohingegen sich gegenhegemoniale Institutionalisierungsprozesse von Parteibildungen bis zu general assemblies auf der lokalen Ebene niederschlagen.
On the constraint equations in Einstein-aether theories and the weak gravitational field limit
Creators: name: Garfinkle, David
name: Isenberg, James
name: Martin-Garcia, Jose M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the set of constraints for Einstein-aether theories, comparing the flat background case with what is expected when the gravitational fields are dynamic. We note potential pathologies occurring in the weak gravitational field limit for some of the Einstein-aether theories.
A stable Algebraic Spin Liquid in a Hubbard model
Creators: name: Hassan, S. R.
name: Sriluckshmy, P. V.
name: Goyal, Sandeep K
name: Shankar, R.
name: Sénéchal, David
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show the existence of a stable Algebraic Spin Liquid (ASL) phase in a Hubbard model defined on a honeycomb lattice with spin-dependent hopping that breaks time-reversal symmetry. The effective spin model is the Kitaev model for large on-site repulsion. The gaplessness of the emergent Majorana fermions is protected by the time reversal (TR) invariance of this model. We prove that the effective spin model is TR invariant in the entire Mott phase thus ensuring the stability of the ASL. The model can be physically realized in cold atom systems and we propose experimental signals of the ASL.
description: Published in PRL
THE ROLE OF FUNCTIONAL NEUROANATOMY IN UNDERSTANDING BRAIN DISORDERS: CURRENT PERSPECTIVES
Creators: name: Abeir Bashir Hasan
name: Salma Osman Taha
name: Shereen Mahmoud Refaie
Publisher: name: Zenodo
Year: 2023
Subjects: Neuroanatomy, Brain Disorders, Imaging Techniques, Neural Networks.

description: Abstract
The field of neuroscience has witnessed significant advancements in recent years, shedding new light on the intricate relationship between functional neuroanatomy and the manifestation of brain disorders. This research paper provides an in-depth analysis of the pivotal role that functional neuroanatomy plays in comprehending brain disorders. The current perspectives on this subject were investigated, discussing the integration of advanced imaging techniques, the identification of neural networks, and the potential impact on diagnosis and treatment strategies. This paper underscores the importance of interdisciplinary collaboration to further our understanding of brain disorders and improve patient outcomes.
1970, 9.5. - 21.6.: Monschau. Umwelt-Akzente - Die Expansion der Kunst
Creators: name: Herzog, Günter
Publisher: name: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts
Year: 2019

description: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts, Nr. 30 (2019): Sediment
Quantum dynamics of a single, mobile spin impurity
Creators: name: Fukuhara, Takeshi
name: Kantian, Adrian
name: Endres, Manuel
name: Cheneau, Marc
name: Schauß, Peter
name: Hild, Sebastian
name: Bellem, David
name: Schollwöck, Ulrich
name: Giamarchi, Thierry
name: Gross, Christian
name: Bloch, Immanuel
name: Kuhr, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum magnetism describes the properties of many materials such as transition metal oxides and cuprate superconductors. One of its elementary processes is the propagation of spin excitations. Here we study the quantum dynamics of a deterministically created spin-impurity atom, as it propagates in a one-dimensional lattice system. We probe the full spatial probability distribution of the impurity at different times using single-site-resolved imaging of bosonic atoms in an optical lattice. In the Mott-insulating regime, a post-selection of the data allows to reduce the effect of temperature, giving access to a space- and time-resolved measurement of the quantum-coherent propagation of a magnetic excitation in the Heisenberg model. Extending the study to the bath's superfluid regime, we determine quantitatively how the bath strongly affects the motion of the impurity. The experimental data shows a remarkable agreement with theoretical predictions allowing us to determine the effect of temperature on the coherence and velocity of impurity motion. Our results pave the way for a new approach to study quantum magnetism, mobile impurities in quantum fluids, and polarons in lattice systems.
description: 8 pages, 6 figures
Continuity of Ricci Flow Through Neck Pinch Singularities
Creators: name: Lakzian, Sajjad
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C20, 53C21, 53C23

description: In this article, we consider the Angenent-Caputo-Knopf's Ricci Flow through neckpinch singularities. We will explain how one can see the A-C-K's Ricci flow through a neckpinch singularity as a flow of integral current spaces. We then prove the continuity of this weak flow with respect to the Sormani-Wenger Intrinsic Flat (SWIF) distance.
description: 21 pages, 4 figures
Asymmetry in the Outburst of SN 1987A Detected Using Light Echo Spectroscopy
Creators: name: Sinnott, B.
name: Welch, D. L.
name: Rest, A.
name: Sutherland, P. G.
name: Bergmann, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report direct evidence for asymmetry in the early phases of SN 1987A via optical spectroscopy of five fields of its light echo system. The light echoes allow the first few hundred days of the explosion to be reobserved, with different position angles providing different viewing angles to the supernova. Light echo spectroscopy therefore allows a direct spectroscopic comparison of light originating from different regions of the photosphere during the early phases of SN 1987A. Gemini multi-object spectroscopy of the light echo fields shows fine-structure in the H-alpha line as a smooth function of position angle on the near-circular light echo rings. H-alpha profiles originating from the northern hemisphere of SN 1987A show an excess in redshifted emission and a blue knee, while southern hemisphere profiles show an excess of blueshifted H-alpha emission and a red knee. This fine-structure is reminiscent of the "Bochum event" originally observed for SN 1987A, but in an exaggerated form. Maximum deviation from symmetry in the H-alpha line is observed at position angles 16 and 186 degrees, consistent with the major-axis of the expanding elongated ejecta. The asymmetry signature observed in the H-alpha line smoothly diminishes as a function of viewing angle away from the poles of the elongated ejecta. We propose an asymmetric two-sided distribution of 56Ni most dominant in the southern far quadrant of SN 1987A as the most probable explanation of the observed light echo spectra. This is evidence that the asymmetry of high-velocity 56Ni in the first few hundred days after explosion is correlated to the geometry of the ejecta some 25 years later.
description: 15 pages, 24 figures. Accepted to ApJ (with 2 additional figures)
The Effect of Macrodiversity on the Performance of Maximal Ratio Combining in Flat Rayleigh Fading
Creators: name: Basnayaka, Dushyantha A.
name: Smith, Peter J.
name: Martin, Philippa A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: The performance of maximal ratio combining (MRC) in Rayleigh channels with co-channel interference (CCI) is well-known for receive arrays which are co-located. Recent work in network MIMO, edge-excited cells and base station collaboration is increasing interest in macrodiversity systems. Hence, in this paper we consider the effect of macrodiversity on MRC performance in Rayleigh fading channels with CCI. We consider the uncoded symbol error rate (SER) as our performance measure of interest and investigate how different macrodiversity power profiles affect SER performance. This is the first analytical work in this area. We derive approximate and exact symbol error rate results for M-QAM/BPSK modulations and use the analysis to provide a simple power metric. Numerical results, verified by simulations, are used in conjunction with the analysis to gain insight into the effects of the link powers on performance.
description: 10 pages, 5 figures; IEEE Transaction of Communication, 2012 Corrected typos
1971: Münster: Publikation Concept Art / 1971 Muenster: Publication Concept Art
Creators: name: Brito, Philipp Fernandes Do
Publisher: name: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts
Year: 2019

description: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts, Nr. 30 (2019): Sediment
The 2.35 year itch of Cyg OB2 #9 - I. Optical and X-ray monitoring
Creators: name: Naze, Y.
name: Mahy, L.
name: Damerdji, Y.
name: Kobulnicky, H. A.
name: Pittard, J. M.
name: Parkin, E. R.
name: Absil, O.
name: Blomme, R.
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: Context: Nonthermal radio emission in massive stars is expected to arise in wind-wind collisions occurring inside a binary system. One such case, the O-type star Cyg OB2 #9, was proven to be a binary only four years ago, but the orbital parameters remained uncertain. The periastron passage of 2011 was the first one to be observable under good conditions since the discovery of binarity. Aims: In this context, we have organized a large monitoring campaign to refine the orbital solution and to study the wind-wind collision. Methods: This paper presents the analysis of optical spectroscopic data, as well as of a dedicated X-ray monitoring performed with Swift and XMM. Results: In light of our refined orbital solution, Cyg OB2 #9 appears as a massive O+O binary with a long period and high eccentricity; its components (O5-5.5I for the primary and O3-4III for the secondary) have similar masses and similar luminosities. The new data also provide the first evidence that a wind-wind collision is present in the system. In the optical domain, the broad Ha line varies, displaying enhanced absorption and emission components at periastron. X-ray observations yield the unambiguous signature of an adiabatic collision because, as the stars approach periastron, the X-ray luminosity closely follows the 1/D variation expected in that case. The X-ray spectrum appears, however, slightly softer at periastron, which is probably related to winds colliding at slightly lower speeds at that time. Conclusions: It is the first time that such a variation has been detected in O+O systems, and the first case where the wind-wind collision is found to remain adiabatic even at periastron passage.
description: 16p incl. online material, accepted by A&A
1977, 26.6. – 2.10.: Kassel, documenta 6, Malerei/Fotografie / Painting/Photography
Creators: name: Herzog, Günter
Publisher: name: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts
Year: 2019

description: Sediment – Materialien und Forschungen zur Geschichte des Kunstmarkts, Nr. 30 (2019): Sediment
Measurements of the Correlation between Reconstructed Jets and the Reaction Plane in STAR at RHIC
Creators: name: Ohlson, Alice
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The relationship between jet properties and the underlying geometry of the medium produced in heavy ion collisions can be explored through a measurement of the correlation between the axes of reconstructed jets and the reaction plane, defined as "jet v2." Such a measurement provides information on the pathlength dependence of medium-induced parton energy loss and may also be used to assess biases in jet-finding methods. We present first measurements of jet v2 in sqrt(sNN) = 200 GeV Au+Au collisions in the STAR experiment at RHIC. In order to reduce the artificial jet - event plane bias, which results from jet fragments being included in the event plane calculation, detectors at forward pseudorapidity are used to determine the event plane when measuring the v2 of reconstructed jets at mid-rapidity. These measurements demonstrate a non-zero jet v2, which is indicative of pathlength-dependent parton energy loss.
description: 4 pages, 1 figure, proceedings for Quark Matter 2012
Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect
Creators: name: Kikkawa, T.
name: Uchida, K.
name: Shiomi, Y.
name: Qiu, Z.
name: Hou, D.
name: Tian, D.
name: Nakayama, H.
name: Jin, X. -F.
name: Saitoh, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: This letter provides evidence for intrinsic longitudinal spin Seebeck effects (LSSEs) that are free from the anomalous Nernst effect (ANE) caused by an extrinsic proximity effect. We report the observation of LSSEs in Au/Y3Fe5O12 (YIG) and Pt/Cu/YIG systems, showing that LSSE appears even when the mechanism of the proximity ANE is clearly removed. In the conventional Pt/YIG structure, furthermore, we separate the LSSE from the ANE by comparing the voltages in different magnetization and temperature-gradient configurations; the ANE contamination was found to be negligibly small even in the Pt/YIG structure.
description: 5 pages, 5 figures
INFLUENCE OF ESG (ENVIRONMENTAL, SOCIAL, AND GOVERNANCE) FACTORS ON THE FINANCIAL OUTCOMES OF LEADING INDIAN COMPANIES
Creators: name: Megha Thakur
Publisher: name: Zenodo
Year: 2023

description: This study presents a systematic evaluation of research on the correlation between ESG aspects and the financial performance of top Indian corporations. ESG integration in investment strategies and business decision-making has become a focus point due to the growing worldwide attention on sustainable practises. This review synthesises information from multiple research efforts, examines the consistency of results across different studies, and underlines the distinctive elements of the Indian market. Financial performance, risk management, and the allure of investors are all areas where organisations with good ESG practises tend to excel. However, the magnitude of these advantages varies depending on the sector, the size of the organisation, and the ESG factors that are being addressed. Data inconsistency, a lack of standardised reporting, and legal impediments are just some of the difficulties encountered by Indian organisations when they try to apply ESG practises, and they are all discussed in this article. Despite these obstacles, businesses may gain a competitive advantage, encourage innovation, and aid in sustainable development by adopting ESG practises.
On the integrable elliptic cylindrical Kadomtsev-Petviashvili equation
Creators: name: Khusnutdinova, K. R.
name: Klein, C.
name: Matveev, V. B.
name: Smirnov, A. O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: There exist two versions of the Kadomtsev-Petviashvili equation, related to the Cartesian and cylindrical geometries of the waves. In this paper we derive and study a new version, related to the elliptic cylindrical geometry. The derivation is given in the context of surface waves, but the derived equation is a universal integrable model applicable to generic weakly-nonlinear weakly-dispersive waves. We also show that there exist nontrivial transformations between all three versions of the KP equation associated with the physical problem formulation, and use them to obtain new classes of approximate solutions for water waves.
description: 14 pages, 17 figures
Fractional exclusion statistics -- the method to describe interacting particle systems as ideal gases
Creators: name: Anghel, Dragos-Victor
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: I show that if the total energy of a system of interacting particles may be written as a sum of quasiparticle energies, then the system of quasiparticles can be viewed in general as an ideal gas with fractional exclusion statistics (FES). The general method for calculating the FES parameters is also provided. The interacting particle system cannot be described as an ideal gas of Bose and Fermi quasiparticles except in trivial situations.
description: 4 pages, 1 figure
Quarkonium dissociation by anisotropy
Creators: name: Chernicoff, Mariano
name: Fernandez, Daniel
name: Mateos, David
name: Trancanelli, Diego
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the screening length for quarkonium mesons moving through an anisotropic, strongly coupled N=4 super Yang-Mills plasma by means of its gravity dual. We present the results for arbitrary velocities and orientations of the mesons, as well as for arbitrary values of the anisotropy. The anisotropic screening length can be larger or smaller than the isotropic one, and this depends on whether the comparison is made at equal temperatures or at equal entropy densities. For generic motion we find that: (i) mesons dissociate above a certain critical value of the anisotropy, even at zero temperature; (ii) there is a limiting velocity for mesons in the plasma, even at zero temperature; (iii) in the ultra-relativistic limit the screening length scales as $(1-v^2)^ε$ with ε=1/2, in contrast with the isotropic result ε=1/4.
description: 39 pages, 26 figures; v2: minor changes, added references
Gerd Strickhausen, Burgen der Ludowinger in Thüringen, Hessen und dem Rheinland. Studien zu Architektur und Landesherrschaft im Hochmittelalter
Creators: name: Wirth, Hermann
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2018

description: Rezension zu: Gerd Strickhausen, Burgen der Ludowinger in Thüringen, Hessen und dem Rheinland. Studien zu Architektur und Landesherrschaft im Hochmittelalter. Darmstadt und Marburg: Selbstverlag der Hessischen Historischen Kommission Darmstadt und der Historischen Kommission für Hessen 1998 (Quellen und Forschungen zur hessischen Geschichte, Bd. 109), 398 S. (davon 75 S. Abb., eine Seite mit Karte, eine unbedruckt). ISBN 3-88443-061-0
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 40 Nr. 2 (1999): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
The Eckart frame Hamiltonians in the three-body problem
Creators: name: Meremianin, A. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Eckart frame is used to separate out the collective rotations in the quantum three-body problem. Explicit expressions for the corresponding rotational and vibro-rotational (i.e. Coriolis) Hamiltonians are derived. Special attention is paid to the situation when two principal moments of inertia are equal in the equilibrium configuration.
description: 12 pages, 2 figures. Regular paper
Gerhard Billig/Heinz Müller, Burgen - Zeugen sächsischer Geschichte
Creators: name: Zeune, Joachim
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2018

description: Rezension zu: Gerhard Billig/Heinz Müller, Burgen - Zeugen sächsischer Geschichte. Neustadt a.d. Aisch: Degener 1998, 284 S., zahlreiche Strichzeichnungen, 1 Karte, Querformat, geb. ISBN 3-7686-4191-0
description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 40 Nr. 2 (1999): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Gouvernance Organisationnelle Et Performance Durable Des Entreprises Publiques Tchadiennes En Contexte D'incertitude Environnementale
Creators: name: DJEROU YOUSSOUF, Amir
name: DJUATIO, Emmanuel
name: TIONA WAMBA, Joseph Herman
Publisher: name: Zenodo
Year: 2023
Subjects: Gouvernance organisationnelle ; Performance durable ; Incertitude environnementale ; Parties prenantes ; Services publics.

description: À une époque où les pouvoirs publics sont de plus en plus intéressés par les questions relatives à la satisfaction des attentes des usagers, poser le problème de leur performance revient à questionner la satisfaction de toutes les parties prenantes des entreprises publiques. L'État tchadien n'en fait pas abstraction. C'est dans cette perspective que le présent article s'est intéressé au rôle que jouerait la gouvernance organisationnelle dans la construction d'une performance qui se veut durable dans un contexte où l'environnement est incertain. La question centrale de cet article est formulée comme suit : quelle est l'incidence de la gouvernance organisationnelle sur la performance durable des entreprises tchadiennes en contexte d'incertitude environnementale ? Pour réponde à cette question, la démarche méthodologique est mixte. Au terme des analyses des données qualitatives et quantitatives, il ressort principalement que la prise en compte de l'incertitude environnementale accentue l'effet positif de la gouvernance organisationnelle sur la performance durable. Face à cet état des choses, nous recommandons aux entreprises publiques tchadiennes de mettre sur pied une veille technologique destinée à promouvoir l'innovation ; tout en menant des enquêtes de satisfaction tant en interne qu'en externe.
Inhaltsverzeichnis
Creators: name: Redaktion, Die
Publisher: name: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
Year: 2018

description: Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege, Bd. 42 Nr. 4 (2001): Burgen und Schlösser - Zeitschrift für Burgenforschung und Denkmalpflege
φ-State and Inverted Fraunhofer Pattern in Nonaligned Josephson Junctions
Creators: name: Alidoust, Mohammad
name: Linder, Jacob
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A generic nonaligned Josephson junction in the presence of an external magnetic field is theoretically considered and an unusual flux-dependent current-phase relation (CPR) is revealed. We explain the origin of the anomalous CPR via the current density flow induced by the external field within a two-dimensional quasiclassical Keldysh-Usadel framework. In particular, it is demonstrated that nonaligned Josephson junctions can be utilized to obtain a ground-state other than 0 and π, corresponding to a so-called φ-junction, which is tunable via the external magnetic flux. Furthermore, we show that the standard Fraunhofer central peak of the critical supercurrent may be inverted into a local minimum solely due to geometrical factors in planar junctions. This yields good consistency with a recent experimental measurement displaying such type of puzzling feature [R. S. Keizer et al, Nature 439, 825 (2006)].
description: 5 pages, 4 figures. To Appear in Physical Review B: Rapid Communications
On U-Statistics and Compressed Sensing I: Non-Asymptotic Average-Case Analysis
Creators: name: Lim, Fabian
name: Stojanovic, Vladimir Marko
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Hoeffding's U-statistics model combinatorial-type matrix parameters (appearing in CS theory) in a natural way. This paper proposes using these statistics for analyzing random compressed sensing matrices, in the non-asymptotic regime (relevant to practice). The aim is to address certain pessimisms of "worst-case" restricted isometry analyses, as observed by both Blanchard & Dossal, et. al. We show how U-statistics can obtain "average-case" analyses, by relating to statistical restricted isometry property (StRIP) type recovery guarantees. However unlike standard StRIP, random signal models are not required; the analysis here holds in the almost sure (probabilistic) sense. For Gaussian/bounded entry matrices, we show that both l1-minimization and LASSO essentially require on the order of k \cdot [\log((n-k)/u) + \sqrt{2(k/n) \log(n/k)}] measurements to respectively recover at least 1-5u fraction, and 1-4u fraction, of the signals. Noisy conditions are considered. Empirical evidence suggests our analysis to compare well to Donoho & Tanner's recent large deviation bounds for l0/l1-equivalence, in the regime of block lengths 1000-3000 with high undersampling (50-150 measurements); similar system sizes are found in recent CS implementation. In this work, it is assumed throughout that matrix columns are independently sampled.
description: 12 pages. 3 pages supplementary material. Submitted to IEEE Trans. Signal Processing
Extended dynamical density functional theory for colloidal mixtures with temperature gradients
Creators: name: Wittkowski, Raphael
name: Löwen, Hartmut
name: Brand, Helmut R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: In the past decade, classical dynamical density functional theory (DDFT) has been developed and widely applied to the Brownian dynamics of interacting colloidal particles. One of the possible derivation routes of DDFT from the microscopic dynamics is via the Mori-Zwanzig-Forster projection operator technique with slowly varying variables such as the one-particle density. Here, we use the projection operator approach to extend DDFT into various directions: first, we generalize DDFT toward mixtures of $n$ different species of spherical colloidal particles. We show that there are in general nontrivial cross-coupling terms between the concentration fields and specify them explicitly for colloidal mixtures with pairwise hydrodynamic interactions. Secondly, we treat the energy density as an additional slow variable and derive formal expressions for an extended DDFT containing also the energy density. The latter approach can in principle be applied to colloidal dynamics in a nonzero temperature gradient. For the case without hydrodynamic interactions the diffusion tensor is diagonal, while thermodiffusion -- the dissipative cross-coupling term between energy density and concentration -- is nonzero in this limit. With finite hydrodynamic interactions also cross-diffusion coefficients assume a finite value. We demonstrate that our results for the extended DDFT contain the transport coefficients in the hydrodynamic limit (long wavelengths, low frequencies) as a special case.
description: 15 pages, 1 figure
Two-color QCD at imaginary chemical potential and its impact on real chemical potential
Creators: name: Kashiwa, Kouji
name: Sasaki, Takahiro
name: Kouno, Hiroaki
name: Yahiro, Masanobu
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study properties of two-color QCD at imaginary chemical potential ($μ$) from the viewpoint of the Roberge-Weiss (RW) periodicity, the charge conjugation and the pseudo-reality. At $μ=\pm iπT/2$, where $T$ is temperature, the system is symmetric under the combination of the charge conjugation ${\cal C}$ and the ${\mathbb Z}_{2}$ transformation. The symmetry, called ${\cal C} {\mathbb Z}_{2}$ symmetry, is preserved at lower $T$ but broken at higher $T$. The Polyakov-loop extended Nambu--Jona-Lasinio (PNJL) model has the same properties as two-color QCD for ${\cal C} {\mathbb Z}_{2}$ symmetry and the pseudo-reality. The nontrivial correlation between the chiral restoration and the deconfinement are investigated by introducing the entanglement vertex in the PNJL model. The order of ${\cal C} {\mathbb Z}_{2}$ symmetry breaking at the RW endpoint is second-order when the correlation is weak, but becomes first-order when the correlation is strong. We also investigate the impact of the correlation on the phase diagram at real $μ$.
description: 10 pages, 9 figures, 3 tables
title: Queer Female Gaze. Ein besonderer Blick auf Filme und Serien
title: Queer Female Gaze. A Special Perspective On Films and Series
Creators: name: Porcu, Victoria
Publisher: name: Universität Würzburg
Year: 2023
Subjects: subject: 301 Soziologie, Anthropologie

description: Würzburger Studien zur Europäischen Ethnologie; 17
On U-Statistics and Compressed Sensing II: Non-Asymptotic Worst-Case Analysis
Creators: name: Lim, Fabian
name: Stojanovic, Vladimir
Publisher: name: arXiv
Year: 2012
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In another related work, U-statistics were used for non-asymptotic "average-case" analysis of random compressed sensing matrices. In this companion paper the same analytical tool is adopted differently - here we perform non-asymptotic "worst-case" analysis. Simple union bounds are a natural choice for "worst-case" analyses, however their tightness is an issue (and questioned in previous works). Here we focus on a theoretical U-statistical result, which potentially allows us to prove that these union bounds are tight. To our knowledge, this kind of (powerful) result is completely new in the context of CS. This general result applies to a wide variety of parameters, and is related to (Stein-Chen) Poisson approximation. In this paper, we consider i) restricted isometries, and ii) mutual coherence. For the bounded case, we show that k-th order restricted isometry constants have tight union bounds, when the measurements m = \mathcal{O}(k (1 + \log(n/k))). Here we require the restricted isometries to grow linearly in k, however we conjecture that this result can be improved to allow them to be fixed. Also, we show that mutual coherence (with the standard estimate \sqrt{(4\log n)/m}) have very tight union bounds. For coherence, the normalization complicates general discussion, and we consider only Gaussian and Bernoulli cases here.
description: 12 pages. Submitted to IEEE Transactions on Signal Processing
Exact elegant Laguerre-Gaussian vector wave packets
Creators: name: Nasalski, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An exact closed-form representation is derived of a vector elegant Laguerre-Gaussian wave packet. Its space-time representation consists of three mutually orthogonal field components - of a common azimuthal index and different radial indices - uniquely distinguished by first three powers of the paraxial parameter. The transverse components are of tm-radial and te-azimuthal polarization and appear, under their normal incidence, to be eigenmodes of any horizontally planar, homogeneous and isotropic structure, with eigenvalues given by the reflection and transmission coefficients. In this context, the interrelations between the cross-polarization symmetries of wave packets in free space and at medium planar interfaces are discussed.
description: 4 pages
On the spatial correlation between areas of high coseismic slip and aftershock clusters of the Maule earthquake Mw=8.8
Creators: name: Contreras-Reyes, Javier E.
name: Azzalini, Adelchi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Applications (stat.AP)
subject: Geophysics (physics.geo-ph)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We study the spatial distribution of clusters associated to the aftershocks of the megathrust Maule earthquake MW 8.8 of 27 February 2010. We used a recent clustering method which hinges on a nonparametric estimation of the underlying probability density function to detect subsets of points forming clusters associated with high density areas. In addition, we estimate the probability density function using a nonparametric kernel method for each of these clusters. This allows us to identify a set of regions where there is an association between frequency of events and coseismic slip. Our results suggest that high coseismic slip spatially correlates with high aftershock frequency.
description: 16 pages, 5 figures
title: Διεθνής και Ευρωπαϊκή Περιβαλλοντική Διακυβέρνηση
title: Διεθνής και Ευρωπαϊκή Περιβαλλοντική Διακυβέρνηση
Creators: name: Gizari-Xanthopoulou, Anna
name: Manou, Dimitra
Publisher: name: Kallipos, Open Academic Editions
Year: 2023
Subjects: διεθνές δίκαιο περιβάλλοντος
ευρωπαϊκό δίκαιο περιβάλλοντος
περιβαλλοντική διακυβέρνηση
international environmental law
european environmental law
environmental governance

description: Διεθνής και Ευρωπαϊκή Περιβαλλοντική Διακυβέρνηση
description: Διεθνής και Ευρωπαϊκή Περιβαλλοντική Διακυβέρνηση