cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Study of the in-plane magnetic penetration depth in the cuprate superconductor Ca_2-xNa_xCuO_2Cl_2: role of the apical sites
Creators: name: Khasanov, R.
name: Zhigadlo, N. D.
name: Karpinski, J.
name: Keller, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A study of the in-plane magnetic penetration depth λ_ab in a series of the cuprate superconductors Ca_2-xNa_xCuO_2Cl_2 (Na-CCOC) with Na content x=0.11, 0.12, 0.15, 0.18, and 0.19 is reported. The zero temperature values of λ_ab(0) were obtained by means of the muon-spin rotation technique, as well as from measurements of the intrinsic susceptibility χ^int(0) by using the procedure developed by Kanigel et al. [Phys.Rev.B 71, 224511 (2005)]. λ_ab at T=0K was found to increase with decreasing doping from λ_ab(0)=316(19)nm for the x=0.19 sample to λ_ab(0)=430(26)nm for the x=0.11 one. From a comparison of the present Na-CCOC data with those of Bi2201 and La214 cuprate superconductors it is concluded that substitution of the apical oxygen by chlorine decreases the coupling between the superconducting CuO_2 planes, leading to an enhancement of the two-dimensional properties of Na-CCOC.
description: 8 pages, 7 figures
Bianchi Type III String Cosmological Models with Time Dependent Bulk Viscosity
Creators: name: Bali, Raj
name: Pradhan, Anirudh
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Bianchi type III string cosmological models with bulk viscous fluid for massive string are investigated. To get the determinate model of the universe, we have assumed that the coefficient of bulk viscosity ($ξ$) is inversely proportional to the expansion ($θ$) in the model and expansion ($θ$) in the model is proportional to the shear ($σ$). This leads to $B = \ell C^{n}$, $\ell$ and $n$ are constants. The behaviour of the model in presence and absence of bulk viscosity, is discussed. The physical implications of the models are also discussed in detail.
description: 11 pages, no figure
Livelihoods assessment for communities surrounding the Matura forest and coastal zone pilot protected area, Trinidad
Creators: name: Eynden, Veerle Van Den
Publisher: name: figshare
Year: 2018
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business
subject: 160802 Environmental Sociology
subject: FOS: Sociology

description: Report describing a livelihoods assessment carried out in communities surrounding the Matura Forest and Coastal Zone pilot protected area. This protected area consists of Matura National Park (MNP) Environmentally Sensitive Area (ESA) – a primary tropical forest area of 9000 ha that was declared an ESA in 2004 - and the three protected beaches at Grande Riviere, Matura and Fishing Pond - declared protected beaches to conserve nesting leatherback turtles in 1990. This study forms part of the “Improving Forest and Protected Area Management in Trinidad and Tobago (IFPAM-TT)” project of the Food and Agricultural Organisation of the United Nations. Aim was to assess how local livelihoods are based on the natural resource richness Matura National Park and the nearby protected beaches have to offer; and determine which livelihoods opportunities based on the sustainable use of natural resources communities want to develop.
The optical conductivity of graphene in the visible region of the spectrum
Creators: name: Stauber, T.
name: Peres, N. M. R.
name: Geim, A. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We compute the optical conductivity of graphene beyond the usual Dirac cone approximation, giving results that are valid in the visible region of the conductivity spectrum. The effect of next nearest neighbor hoping is also discussed. Using the full expression for the optical conductivity, the transmission and reflection coefficients are given. We find that even in the optical regime the corrections to the Dirac cone approximation are surprisingly small (a few percent). Our results help in the interpretation of the experimental results reported by Nair {\it et al.} [Science {\bf 320}, 1308 (2008)].
description: 8 pages, 6 figures
High frequency stability estimates for a partial data inverse problem
Creators: name: Choudhury, Anupam Pal
name: Krishnan, Venkateswaran P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this article, high frequency stability estimates for the determination of the potential in the Schrödinger equation are studied when the boundary measurements are made on slightly more than half the boundary. The estimates reflect the increasing stability property with growing frequency.
Universality of the saturation scale and the initial eccentricity in heavy ion collisions
Creators: name: Lappi, T.
name: Venugopalan, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent estimates that Color Glass Condensate initial conditions may generate a larger initial eccentricity for noncentral relativistic heavy ion collisions (relative to the initial eccentricity assumed in earlier hydrodynamic calculations) have raised the possibility of a higher bound on the viscosity of the Quark Gluon Plasma. We show that this large initial eccentricity results in part from a definition of the saturation scale as proportional to the number of nucleons participating in the collision. A saturation scale proportional to the nuclear thickness function (and therefore independent of the probe) leads to a smaller eccentricity, albeit still larger than the value used in hydrodynamic models. Our results suggest that the early elliptic flow in heavy ion collisions (unlike multiplicity distributions) is sensitive to the universality of the saturation scale in high energy QCD.
description: 5 pages, 3 figures, RevTEX
Different facets of the raise and peel model
Creators: name: Alcaraz, Francisco C.
name: Rittenberg, Vladimir
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The raise and peel model is a one-dimensional stochastic model of a fluctuating interface with nonlocal interactions. This is an interesting physical model. It's phase diagram has a massive phase and a gapless phase with varying critical exponents. At the phase transition point, the model exhibits conformal invariance which is a space-time symmetry. Also at this point the model has several other facets which are the connections to associative algebras, two-dimensional fully packed loop models and combinatorics.
description: 29 pages 17 figures
Horizon news function and quasi-local energy-momentum flux near black hole
Creators: name: Wu, Yu-Huei
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: From the 'quasi-local' definition of horizons, e.g. isolated horizon and dynamical horizon, the consequence quasi-local energy-momentum near horizons can be observed by using the idea of frame alignment. In particular, we find the horizon news function from the asymptotic expansion near horizons and use this to describe the gravitational flux and change of mass of a black hole.
description: 4 pages, submitted to the MG11 proceedings
Dynamics of kink-soliton solutions for $2+1$-dimensional sine-Gordon equation
Creators: name: Saleem, U.
name: Sarfraz, H.
name: Hanif, Y.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we study the dynamics of explicit solutions of $2+1$-dimensional ($2$D) sine-Gordon equation. The Darboux transformation is applied to the associated linear eigenvalue problem to construct nontrivial solutions of $2$D sine-Gordon equation in terms of ratios of determinants. We obtained a generalized expression for $N$-fold transformed dynamical variable which enables us to calculate explicit expressions of nontrivial solutions. In order to explore the dynamics of kink soliton solutions explicit expressions one- and two-soliton solutions are derived for particular column solutions. Different profiles of kink-kink and, kink and anti-kink interactions are illustrated for a different parameters and arbitrary functions. First-order bound state solution is also displayed in our work.
Χρηματοοικονομική ανάλυση του κλάδου της ηλεκτρικής ενέργειας
Creators: name: Χατζημπαλιώτη, Ιωάννα Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: ηλεκτρική ενέργεια
χρηματοοικονομική ανάλυση
κλάδος ενέργειας
electricity
financial analysis
sector of electricity

description: Η παρούσα διπλωματική εργασία έχει ως στόχο την χρηματοοικονομική ανάλυση πέντε εταιριών, «ΔΕΗ», «ΗΡΩΝ», «VOLTERRA», «PROTERGIA» και «ELPEDISON», του κλάδου της ηλεκτρικής ενέργειας, καθώς και την εξαγωγή χρήσιμων συμπερασμάτων για την πορεία τόσο των εταιριών, όσο και του κλάδου. Η ανάλυση γίνεται βάσει των ετήσιων οικονομικών καταστάσεων και των Ισολογισμών των εταιριών. Οι παραπάνω εταιρίες που θα μελετηθούν δραστηριοποιούνται κυρίως στην Ελλάδα και έχουν συνάψει συμμαχίες με αλλοδαπές ή πολυεθνικές εταιρίες που έχουν ως κύριο αντικείμενό τους την ενέργεια. Οι εταιρίες αυτές προσφέρουν ηλεκτρική ενέργεια στον καταναλωτή και ανταγωνίζονται μεταξύ τους, με κύριο σκοπό την ανάπτυξη και την κερδοφορία τους. Με την ανάλυση των εταιριών αυτών προσεγγίζεται ο κλάδος της ενέργειας, ο οποίος είναι στρατηγικός για την ελληνική οικονομία, καθώς οδηγεί στην ανάπτυξή της. Ο κλάδος αυτός που μέχρι πριν από μερικά χρόνια ήταν μονοπωλιακός, αποτελείται πλέον από πολλές εταιρίες που προσπαθούν να δραστηριοποιηθούν και να εδραιωθούν. Ταυτόχρονα είναι δυναμικά εξελισσόμενος, είναι άμεσα συνδεδεμένος με όλα τα μεγάλα έργα υποδομής της χώρας, δημιουργεί θετικές οικονομίες κλίμακας και έχει θετικές προοπτικές για τα επόμενα έτη. Είναι ένας κλάδος που έχει κεντρίσει το ενδιαφέρον των επενδυτών και μπορεί να οδηγήσει σε επενδύσεις που θα αλλάξουν την οικονομική κατάσταση της χώρας, αν βέβαια βελτιωθεί η πολιτική αστάθεια και η αβεβαιότητα
description: This study analyses, compares and discusses the finances of five electricity companies, named “DEI”, “HERON”, “VOLTERRA”, “PROTERGIA” and “ELPEDISON”. The analysis is based on the companies annual financial statements and their balance sheets. These companies are mainly active in Greece and have been cooperating with foreign or multinational corporations whose main focus is energy. They offer electricity to the consumer and compete with each other. Their main purpose is to grow and increase their profitability. Furthermore, the energy sector which is analyzed in this financial study, is strategic for the Greek economy as it could lead to its development. While this industry used to be a monopoly until recently, it now consists of many companies that compete to be established. Also, it is dynamically evolving and is directly related to all the major infrastructure projects of the country, creating growing economies and prospects for the following years. Finally, this sector attracts interest that can lead to investments than will change the country’s economy if of course the political instability and uncertainty improves
Discovery of magnetic fields in the beta Cephei star xi^1 CMa and in several Slowly Pulsating B stars
Creators: name: Hubrig, S.
name: Briquet, M.
name: Schoeller, M.
name: De Cat, P.
name: Mathys, G.
name: Aerts, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a magnetic survey of a sample of eight beta Cephei stars and 26 Slowly Pulsating B stars with FORS1 at the VLT. A weak mean longitudinal magnetic field of the order of a few hundred Gauss is detected in the beta Cephei star xi^1 CMa and in 13 SPB stars. The star xi^1 CMa becomes the third magnetic star among the beta Cephei stars. Before our study, the star zeta Cas was the only known magnetic SPB star. All magnetic SPB stars for which we gathered several magnetic field measurements show a field that varies in time. We do not find a relation between the evolution of the magnetic field with stellar age in our small sample. Our observations imply that beta Cephei stars and SPBs can no longer be considered as classes of non-magnetic pulsators, but the effect of the fields on the oscillation properties remains to be studied.
description: 5 pages, 2 figures, 2 tables, accepted as a letter to MNRAS
Seek and ye shall find bias: ethical issues in social science research employing big data
Creators: name: Wieczorek, Michał
name: Hosseini, Mohammad
Publisher: name: Zenodo
Year: 2021
Subjects: Big Data Ethics
Social Science Research
Data Ethics
Research Ethics
Research Integrity
Bias

description: This talk is focused on the ethical aspects of the use and reuse of big data sets in social science research. Using specific examples connected to the functioning of big data technologies, such as algorithmic bias and inaccuracy of data collection methods, we highlight the unreliability of research projects that employ big data sets. Moreover, we highlight the interpretative nature of social sciences, which can make research results susceptible to researchers’ prejudices. Accordingly, we argue that the use of big data in social science research should be scrutinised to a higher degree as it raises ethical concerns that are either unique to big data social science research or more pronounced than in STEM disciplines. Since current research ethics frameworks do not address these ethical issues, we propose the development of specific guidelines.
Microquasars as sources of positron annihilation radiation
Creators: name: Guessoum, N.
name: Jean, P.
name: Prantzos, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We consider the production of positrons in microquasars, i.e. X-ray binary systems that exhibit jets frequently, but not continuously. We estimate the production rate of positrons in microquasars, both by simple energy considerations and in the framework of various proposed models. We then evaluate the collective emissivity of the annihilation radiation produced by Galactic microquasars and we find that it might constitute a substantial contribution to the annihilation flux measured by INTEGRAL/SPI. We also discuss the possible spatial distribution of Galactic microquasars, on the basis of the (scarce) available data and the resulting morphology of the flux received on Earth. Finally, we consider nearby 'misaligned' microquasars, with jets occasionally hitting the atmosphere of the companion star; these would represent interesting point sources, for which we determine the annihilation flux and the corresponding light curve, as well as the line's spectral profile. We discuss the possibility of detection of such point sources by future instruments.
description: 13 pages, 7 figures, accepted in A&A
New Invariants of Poncelet-Jacobi Bicentric Polygons
Creators: name: Roitman, Pedro
name: Garcia, Ronaldo
name: Reznik, Dan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: Computational Geometry (cs.CG)
subject: Mathematical Physics (math-ph)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: 51M04, 51N20, 51N35, 68T20

description: The 1d family of Poncelet polygons interscribed between two circles is known as the Bicentric family. Using elliptic functions and Liouville's theorem, we show (i) that this family has invariant sum of internal angle cosines and (ii) that the pedal polygons with respect to the family's limiting points have invariant perimeter. Interestingly, both (i) and (ii) are also properties of elliptic billiard N-periodics. Furthermore, since the pedal polygons in (ii) are identical to inversions of elliptic billiard N-periodics with respect to a focus-centered circle, an important corollary is that (iii) elliptic billiard focus-inversive N-gons have constant perimeter. Interestingly, these also conserve their sum of cosines (except for the N=4 case).
description: 17 pages, 6 figures, 1 table with 18 video links
Exact solution to the main turbulence problem for a compressible medium and the universal -8/3 turbulence spectrum of breaking waves
Creators: name: Chefranov, Sergey G.
name: Chefranov, Artem S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: An explicit analitical description of the compressible turbulence, based on the exact solution of the one-dimensional Euler equations in the unbounded case is obtained. The Onsager dissipative anomaly is resolved. The exact universal -8/3 energy spectrum corresponding to the finite time collapse of Euler's solution is stated. That spectrum is relevant to strong acoustic turbulence and observation in the space turbulence.
description: 2 figures
Elicitation session: Vowel coalescence, labialization, diminutive and augmentative
Creators: name: Ngolele, Christophère
name: Hyman, Larry M.
name: Lionnet, Florian
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: teg

description: 5 WAV files, 1 PDF file. PDF file is scan of corresponding pages from Lionnet's field notes (pp. 20-26, notebook 2).
Additional file 1 of Clinical and mutational profiles of adult medulloblastoma groups
Creators: name: Wong, Gabriel Chun-Hei
name: Li, Kay Ka-Wai
name: Wang, Wei-Wei
name: Liu, Anthony Pak-Yin
name: Huang, Queenie Junqi
name: Chan, Aden Ka-Yin
name: Poon, Manix Fung-Man
name: Chung, Nellie Yuk-Fei
name: Wong, Queenie Hoi-Wing
name: Chen, Hong
name: Chan, Danny Tat Ming
name: Liu, Xian-Zhi
name: Mao, Ying
name: Zhang, Zhen-Yu
name: Shi, Zhi-Feng
name: Ng, Ho-Keung
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. Supplementary Figures S1–S7
Livelihoods Assessment Guide
Creators: name: Eynden, Veerle Van Den
Publisher: name: figshare
Year: 2018
Subjects: subject: 140205 Environment and Resource Economics
subject: FOS: Economics and business

description: Guide describing proposed methodology for carrying out livelihood assessments in communities surrounding protected areas in Trinidad and Tobago, based on a Livelihoods Assessment carried out in July-November 2017 in communities surrounding the Matura Forest and Coastal Zone protected area.Aim of such study is to assess how local livelihoods are based on the use of the protected area and its natural resources, and identify which livelihoods opportunities based on the sustainable use of natural resources communities would like to develop.
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Land use and transportation planning: The Greater Vancouver Regional District North East Sector: 1951- 1990
Creators: name: Elder, Brian W.
Publisher: name: University of British Columbia
Year: 2008

description: One of the most pressing problems faced by large urban areas is traffic congestion. Traffic congestion, or the urban transportation problem is not a new phenomenon, having existed since the process of urbanization began. Low density urbanization or suburbanization, facilitated by the availability of large numbers of automobiles has contributed to the present traffic problem. The causes of the problem have long been recognized by planners and decision makers, and viable solutions have been proposed. However, in spite of solutions being known, the problem still exists and has become worse. The purpose of this study is to observe how planners have dealt with the land use and transportation factors which contribute to the ever worsening traffic problems in a suburban area. It is hypothesized that the fragmented nature of the planning and decision making processes have resulted in a lack of co-ordination and co-operation in planning to resolve the urban transportation problem. The objectives of this thesis are to gain an understanding of: 1) why the urban transportation problem exists; 2) the planning process involved in finding solutions to this problem; and 3) the effect of the fragmentation of authority over various factors of land use and transportation. The methodology includes the following steps. The first is a literature review of the current thought on the subject of traffic congestion, and the factors causing it. The second is a literature review of the planning process and the theoretical foundations of current thought on land use and transportation studies. This will be followed by a case study using a descriptive historical approach. The case study reviews developments as well as past land use and transportation studies for the study area. The fourth step involves an interpretation of the information provided in the case study in light of the literature review. The area chosen for the case study is the Greater Vancouver Regional District's North East Sector. This Sector has experienced accelerated development and an increasing 111 population dependant upon the automobile for mobility. Low density land use, has created automobile dependent development, which make an automobile a necessity. A large percentage of the workforce in the area has to commute to other areas. Numerous studies have been commissioned to find solutions to the North East Sector's transportation problems. Despite the realization of the causes of traffic congestion, the solutions presented in the studies have not been comprehensively implemented to achieve workable results. There were two major findings of this study. The first is that planners and decision makers are aware of the relationship between land use and transportation planning. The second is the fragmentation of authority for different aspects of land use and transportation has frustrated attempts to resolve traffic congestion, through a fragmenting of the planning and decision making process.
Five recommendations for "FAIR software"
Creators: name: Martinez-Ortiz, Carlos
name: Kuzak, Mateusz
name: Spaaks, Jurriaan H.
name: Maassen, Jason
name: Bakker, Tom
Publisher: name: Zenodo
Year: 2020
Subjects: research software
FAIR software
Open Science

description: Our Accelerate Open Science Project aims to give context to various developments in the area of Open Science, and to make information about topics such as FAIR data easier accessible. These slides are an adjusted version of the content from the https://fair-software.eu/ website, which is a collaboration between the Netherlands eScience Center and DANS.
Singular Holonomy of Singular Riemannian Foliations with Sections
Creators: name: Alexandrino, Marcos M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C12

description: In this paper we review some author's results about singular holonomy of singular riemannian foliations with sections (s.r.f.s for short) and also some results of a joint work with Toeben and a joint work with Gorodski. We stress here that the condition that the leaves are compact, used in some of these results, can be replaced by the condition that the leaves are closed embedded. We also briefly recall some of Toeben's results about blow-up of s.r.f.s. Then we use this technique to get conditions under which a holonomy map can be extended to a global isometry.
description: 16pages
Nano-to-micro spatiotemporal imaging of magnetic skyrmion's life cycle
Creators: name: Shimojima, T.
name: Nakamura, A.
name: Yu, X. Z.
name: Karube, K.
name: Taguchi, Y.
name: Tokura, Y.
name: Ishizaka, K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Magnetic skyrmions are the self-organized topological spin textures behaving like particles. Because of their fast creation and typically long lifetime, experimental verification of skyrmion's creation/annihilation processes has been challenging. Here we successfully track skyrmions dynamics in defect-introduced Co9Zn9Mn2, by using pump-probe Lorentz transmission electron microscope. Following the nanosecond-photothermal excitation, we resolve 160-nm-skyrmion's proliferation at <1 ns, contraction at 5 ns, drift from 10 ns to 4 microsecond and coalescence at 5 microsecond. These motions relay the multiscale arrangement and relaxation of skyrmion clusters in a repeatable cycle of 20 kHz. Such repeatable dynamics of skyrmions, arising from the weakened but still persistent topological protection around defects, enables us to visualize the whole life of the skyrmions, as well as demonstrating the possible high-frequency manipulations of topological charges brought by skyrmions.
description: 14 pages, 5 figures, Supplementary materials
Rashba Spin Interferometer
Creators: name: Liu, Ming-Hao
name: Chen, Kuo-Wei
name: Chen, Son-Hsien
name: Chang, Ching-Ray
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A spin interferometer utilizing the Rashba effect is proposed. The novel design is composed of a one-dimensional (1D) straight wire and a 1D half-ring. By calculating the norm of the superposed wave function, we derive analytical expressions to describe the spin interference spectrum as a function of the Rashba coupling strength. Presented spin interference results are identified to include (i) the quantum-mechanical 4pi rotation effect, (ii) geometric effect, and (iii) Shubnikov-de Haas-like beating effect.
description: 3 pages, 3 figures, appears in the proceedings of the 10th Joint MMM/Intermag Conference
Recent developments in perturbative QCD
Creators: name: Salam, Gavin P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A brief overview of some recently active topics in perturbative QCD, including: string-inspired recursion techniques at tree level; recursion approaches and automation of standard techniques for 1-loop calculations; the status of NNLO jet calculations; and non-trivial structures that appear in higher-order calculations.
description: 9 pages, 1 figure. Invited talk at the XIV International Workshop on Deep Inelastic Scattering (DIS 2006), April 2006, Tsukuba, Japan
Machine Learning Directed Optimization of Classical Molecular Modeling Force Fields
Creators: name: Befort, Bridgette J.
name: DeFever, Ryan S.
name: Tow, Garrett M.
name: Dowling, Alexander W.
name: Maginn, Edward J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Accurate force fields are necessary for predictive molecular simulations. However, developing force fields that accurately reproduce experimental properties is challenging. Here, we present a machine learning directed, multiobjective optimization workflow for force field parameterization that evaluates millions of prospective force field parameter sets while requiring only a small fraction of them to be tested with molecular simulations. We demonstrate the generality of the approach and identify multiple low-error parameter sets for two distinct test cases: simulations of hydrofluorocarbon (HFC) vapor-liquid equilibrium (VLE) and an ammonium perchlorate (AP) crystal phase. We discuss the challenges and implications of our force field optimization workflow.
Probing long-range leptonic forces with solar and reactor neutrinos
Creators: name: Gonzalez-Garcia, M C
name: Holanda, P C~de
name: Masso, E
name: Funchal, R. Zukanovich
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work we study the phenomenological consequences of the existence of long-range forces coupled to lepton flavour numbers in solar neutrino oscillations. We study electronic forces mediated by scalar, vector or tensor neutral bosons and analyze their effect on the propagation of solar neutrinos as a function of the force strength and range. Under the assumption of one mass scale dominance, we perform a global analysis of solar and KamLAND neutrino data which depends on the two standard oscillation parameters, Δm^2_{21} and \tan^2θ_{12}, the force coupling constant, its range and, for the case of scalar-mediated interactions, on the neutrino mass scale as well. We find that, generically, the inclusion of the new interaction does not lead to a very statistically significant improvement on the description of the data in the most favored MSW LMA (or LMA-I) region. It does, however, substantially improve the fit in the high-Δm^2 LMA (or LMA-II) region which can be allowed for vector and scalar lepto-forces (in this last case if neutrinos are very hierarchical) at 2.5σ. Conversely, the analysis allows us to place stringent constraints on the strength versus range of the leptonic interaction.
description: 20 pages, 8 figures
Matura NP ESA survey report
Creators: name: Eynden, Veerle Van Den
Publisher: name: figshare
Year: 2017
Subjects: subject: 50202 Conservation and Biodiversity
subject: FOS: Biological sciences
subject: Ecology
subject: 50205 Environmental Management
subject: FOS: Earth and related environmental sciences
subject: 50209 Natural Resource Management

description: Report describing the findngs of the Matura National Park ESA participatory biological baseline survey carried out in 2005-2007.
Η διεξαγωγή προβλέψεων ως πρότυπη διοικητική λειτουργία σε τουριστικές επιχειρήσεις. Μελέτη περίπτωσης σε ξενοδοχειακή μονάδα.
Creators: name: Φράγκου, Σοφία Ευστρατίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Προβλέψεις
Διοίκηση Λειτουργιών
Τουριστικές επιχειρήσεις
Forecasts
Operations Management
Tourist enterprises

description: Η παρούσα εργασία έχει ως στόχο την εφαρμογή μεθόδων επιχειρησιακής έρευνας σε απτή ξενοδοχειακή επιχείρηση, χαρτογραφώντας το επιστημονικό πεδίο των προβλέψεων και αναδεικνύοντας τη σημασία εφαρμογής τους, στις τουριστικές επιχειρήσεις. Αρχικά, επιτελείται ανασκόπηση της βιβλιογραφίας, αναφορικά με την τουριστική επιχειρηματικότητα, την επιχειρησιακή έρευνα και τεκμηριώνεται η ανάγκη διασύνδεσης των δύο, ώστε αμφότερες να προσκομίζουν οφέλη. Ειδικότερα, θίγεται ο τρόπος με τον οποίο η διεξαγωγή προβλέψεων καλείται να παίζει σωτήριο ρόλο στην ανάπτυξη της τουριστικής βιομηχανίας. Κατόπιν, στην προσέγγιση του θεωρητικού υπόβαθρου επιτελείται μία στοιχειώδης ανάλυση του επιστημονικού πεδίου των προβλέψεων, ως συστατικό κομμάτι της επιχειρησιακής έρευνας. Στη συνέχεια, υπό το πρίσμα μίας ξενοδοχειακής επιχείρησης, εφαρμόζονται ποσοτικές μέθοδοι πρόβλεψης, αποσκοπώντας στο να οδηγήσουν σε πορίσματα τα οποία θα μπορεί να αξιοποιήσει η επιχείρηση, αλλά και σε ένα δεύτερο επίπεδο, να χρησιμεύσουν ως γενικός οδηγός εφαρμογής προβλέψεων, με τρόπο εύληπτο και κατανοητό
description: The present thesis aims to implement methods of operational research in a hotel business, in order to chart the scientific scope of forecasting and highlight the importance of its application to tourism enterprises. Firstly, literature review is conducted, about tourism entrepreneurship, operational research and the need to interconnect the two, so that both obtain benefits. Moreover, it deals with the way in which forecasting is called to play a salutary role in the development of the tourism industry. Then, in the approach of the theoretical background, a basic analysis of the scientific field of forecasting is done, as an integral part of operational research. Then, from the point of view of a hotel business, quantitative methods of forecasting are implemented, aiming to lead to results, useful to the business, but serve as a general guide of forecasting, in a meaningful and understandable way, as well
A Consistency Relation for Power Law Inflation in DBI models
Creators: name: Spalinski, Michal
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Brane inflation in string theory leads to a new realization of power law inflation which can give rise to significant non-gaussianity. This can happen for any throat geometry if the scalar potential is appropriate. This note presents a consistency relation connecting the running of the nonlinearity parameter characterizing the non-gaussianity and the scalar and tensor indices. The relationship is valid assuming that the throat geometry and scalar potential support power law inflation, regardless of the level of non-gaussianity.
description: Added references, a couple of comments, fixed 3 typos
Large topological Hall effect near room temperature in noncollinear ferromagnet LaMn2Ge2 single crystal
Creators: name: Gong, Gaoshang
name: Xu, Longmeng
name: Bai, Yuming
name: Wang, Yongqiang
name: Yuan, Songliu
name: Liu, Yong
name: Tian, Zhaoming
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Non-trivial spin structures in itinerant magnets can give rise to topological Hall effect (THE) due to the interacting local magnetic moments and conductive electrons. While, in series of materials, THE has mostly been observed at low temperatures far below room temperature (RT) limiting its potential applications. Here, we report the anisotropic anomalous Hall effect (AHE) near RT in LaMn2Ge2, a noncollinear ferromagnetic (FM) with Curie temperature TC=325 K. Large topological Hall resistivity of ~1.0 10-6 ohmcm in broad temperature range (190 K
description: 15 page, 7 figures
Applications of Loop Group Factorization to Geometric Soliton Equations
Creators: name: Terng, Chuu-Lian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 35Q51, 37K05, 53C07

description: The 1-d Schrodinger flow on 2-sphere, the Gauss-Codazzi equation for flat Lagrangian submanifolds in C^n, and the space-time monopole equation are all examples of geometric soliton equations. The linear systems with a spectral parameter (Lax pair) associated to these equations satisfy the reality condition associated to SU(n). In this article, we explain the method developed jointly with K. Uhlenbeck, that uses various loop group factorizations to construct inverse scattering transforms, Backlund transformations, and solutions to Cauchy problems for these equations.
Matura NP ESA files survey manual
Creators: name: Eynden, Veerle Van Den
Publisher: name: figshare
Year: 2017
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: 50202 Conservation and Biodiversity
subject: 50209 Natural Resource Management
subject: FOS: Earth and related environmental sciences

description: Field manual describing the methodology use for the Matura ESA participatory biological baseline survey.
Elicitation session: Relative clauses, negatives, questions
Creators: name: Ngolele, Christophère
name: Hyman, Larry M.
name: Lionnet, Florian
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: teg

description: 9 WAV files, 1 PDF file. PDF file is scan of corresponding pages from Lionnet's field notes (pp. 1-19, notebook 2). See related file bundle for Hyman field notes.
Determining the helicity structure of the nucleon at the Electron Ion Collider in China
Creators: name: Anderle, Daniele Paolo
name: Hou, Tie-Jiun
name: Xing, Hongxi
name: Yan, Mengshi
name: Yuan, C. -P.
name: Zhao, Yuxiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Understanding how sea quarks behave inside a nucleon is one of the most important physics goals of the proposed Electron-Ion Collider in China (EicC), which is designed to have 3.5 GeV polarized electron beam (80% polarization) colliding with 20 GeV polarized proton beam (70% polarization) at instantaneous luminosity of $2 \times 10^{33} {\rm cm}^{-2} {\rm s}^{-1}$. A specific topic at EicC is to understand the polarization of individual quarks inside a longitudinally polarized nucleon. The potential of various future EicC data, including the inclusive and semi-inclusive deep inelastic scattering data from both doubly polarized electron-proton and electron-$^3{\rm He}$ collisions, to reduce the uncertainties of parton helicity distributions is explored at the next-to-leading order in QCD, using the Error PDF Updating Method Package ({\sc ePump}) which is based on the Hessian profiling method. We show that the semi-inclusive data are well able to provide good separation between flavour distributions, and to constrain their uncertainties in the $x>0.005$ region, especially when electron-$^3{\rm He}$ collisions, acting as effective electron-neutron collisions, are taken into account. To enable this study, we have generated a Hessian representation of the DSSV14 set of PDF replicas, named DSSV14H PDFs.
description: 40 pages, 12 figures
Η τεχνολογία blockchain στη βιομηχανία της ενέργειας με έμφαση στον τομέα του ηλεκτρισμού: εξέλιξη, εφαρμογές και ανακύπτοντα νομικά ζητήματα
Creators: name: Γιαννόπουλος, Αναστάσιος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Τεχνολογία blockchain
Βιομηχανία της ενέργειας
Τομέας ηλεκτρισμού
Blockchain technology
Energy industry
Electricity sector

description: Σκοπός της διπλωματικής εργασίας ήταν η μελέτη της τεχνολογίας blockchain στη βιομηχανία της ενέργειας και κυρίως στον τομέα του ηλεκτρισμού. Κάναμε μια γενική επισκόπηση της τεχνολογίας, παρουσιάσαμε τα κύρια στοιχεία της και εντοπίσαμε τα πλεονεκτήματα και τις αδυναμίες της. Στη συνέχεια, εξετάσαμε τη συμβατότητα των δομών της τεχνολογίας blockchain με υφιστάμενες νομικές έννοιες, επικεντρωμένες κυρίως στο δίκαιο των συμβάσεων, στον Γενικό Κανονισμό για την Προστασία των Δεδομένων της Ε.Ε. και στο δίκαιο της πνευματικής ιδιοκτησίας. Επιπλέον, αναπτύξαμε τις δυνατότητες εφαρμογής της τεχνολογίας blockchain στη βιομηχανία της ενέργειας, με εστίαση στον τομέα του ηλεκτρισμού
description: The aim of the present thesis was the study of blockchain technology in the energy industry and especially in the electricity sector. We provided an overview of the technology, presented its main characteristics and identified its advantages and weaknesses. Following that, we examined the structural compatibility of the blockchain technology in relation to present legal concepts, focused mainly on contract law, the General Data Protection Regulation of the E.U. and intellectual property law. Furthermore, we presented the possible applications of the blockchain technology in the energy industry, focused on the electricity sector
Modeling the Lukewarm Corino Phase - is L1527 unique?
Creators: name: Hassel, George E.
name: Herbst, Eric
name: Garrod, Robin T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sakai et al. have observed long-chain unsaturated hydrocarbons and cyanopolyynes in the low-mass star-forming region L1527, and have attributed this result to a gas-phase ion-molecule chemistry, termed ``Warm Carbon Chain Chemistry'', which occurs during and after the evaporation of methane from warming grains. The source L1527 is an envelope surrounding a Class 0/I protostar with regions that possess a slightly elevated temperature of ~30 K. The molecules detected by Sakai et al. are typically associated only with dark molecular clouds, and not with the more evolved hot corino phase. In order to determine if L1527 is chemically distinct from a dark cloud, we compute models including various degrees of heating. The results indicate that the composition of L1527 is somewhat more likely to be due to ``Warm Carbon Chain Chemistry'' than to be a remnant of a colder phase. If so, the molecular products provide a signature of a previously uncharacterized early phase of low mass star formation, which can be characterized as a ``lukewarm'' corino. We also include predictions for other molecular species that might be observed toward candidate lukewarm corino sources. Although our calculations show that unsaturated hydrocarbons and cyanopolyynes can be produced in the gas phase as the grains warm up to 30 K, they also show that such species do not disappear rapidly from the gas as the temperature reaches 200 K, implying that such species might be detected in hot corinos and hot cores.
description: 31 pages, 7 figures, Accepted for publication in ApJ
title: Cahiers Valery Larbaud. 2015, n° 51
title: Valery Larbaud et le paysage
titleType: Subtitle
Creators: name: (:Unap)
Publisher: name: Classiques Garnier
Year: 2015
Subjects: subject: Littérature du XXe siècle
subject: Évolution de la forme romanesque
subject: Cosmopolitisme

description: Liste des contributeurs : Yvon Houssais, Amélie Auzoux, Delphine Viellard, Frédéric Roussille, Christine Kossaifi et Gil Charbonnier
NRQCD analysis of charmonium production with pion and proton beams at fixed-target energies
Creators: name: Hsieh, Chia-Yu
name: Lian, Yu-Shiang
name: Chang, Wen-Chen
name: Peng, Jen-Chieh
name: Platchkov, Stephane
name: Sawada, Takahiro
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We present an analysis of hadroproduction of $J/ψ$ and $ψ(2S)$ at fixed-target energies in the framework of non-relativistic QCD (NRQCD). Using both pion- and proton-induced data, a new determination of the color-octet long-distance matrix elements (LDMEs) is obtained. Compared with previous results, the contributions from the $q \bar{q}$ and color-octet processes are significantly enhanced, especially at lower energies. A good agreement between the pion-induced $J/ψ$ production data and NRQCD calculations using the newly obtained LDMEs is achieved. We find that the pion-induced charmonium production data are sensitive to the gluon density of pions, and favor pion PDFs with relatively large gluon contents at large $x$.
description: 20 pages, 6 figures, published version
Bound state eigenvalues from transmission coefficients
Creators: name: Ahmed, Zafar
name: Bhattacharya, Kaushik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Experts know that bound state energy eigenvalues of a potential well are poles of its transmission amplitude, $t(E)$. The textbooks do well by solving the bound states and scattering states separately, but the connection goes unheeded. Here, we present interesting and instructive illustrations, where we extract bound state eigenvalues from the known transmission coefficients $(T(E)=|t(E)|^2)$ for six analytically solvable potential wells.
description: 4 pages, no figures, no tables, to appear in Eur. J. Phys
Dynamic Studies of Scaffold-dependent Mating Pathway in Yeast
Creators: name: Shao, Danying
name: Zheng, Wen
name: Qiu, Wenjun
name: Ouyang, Qi
name: Tang, Chao
Publisher: name: arXiv
Year: 2006
Subjects: subject: Molecular Networks (q-bio.MN)
subject: FOS: Biological sciences

description: The mating pathway in \emph{Saccharomyces cerevisiae} is one of the best understood signal transduction pathways in eukaryotes. It transmits the mating signal from plasma membrane into the nucleus through the G-protein coupled receptor and the mitogen-activated protein kinase (MAPK) cascade. According to the current understandings of the mating pathway, we construct a system of ordinary differential equations to describe the process. Our model is consistent with a wide range of experiments, indicating that it captures some main characteristics of the signal transduction along the pathway. Investigation with the model reveals that the shuttling of the scaffold protein and the dephosphorylation of kinases involved in the MAPK cascade cooperate to regulate the response upon pheromone induction and to help preserving the fidelity of the mating signaling. We explored factors affecting the dose-response curves of this pathway and found that both negative feedback and concentrations of the proteins involved in the MAPK cascade play crucial role. Contrary to some other MAPK systems where signaling sensitivity is being amplified successively along the cascade, here the mating signal is transmitted through the cascade in an almost linear fashion.
description: 36 pages, 9 figures
Capillary interfacial tension in active phase separation
Creators: name: Fausti, Giordano
name: Tjhung, Elsen
name: Cates, Michael
name: Nardini, Cesare
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In passive fluid-fluid phase separation, a single interfacial tension sets both the capillary fluctuations of the interface and the rate of Ostwald ripening. We show that these phenomena are governed by two different tensions in active systems, and compute the capillary tension $σ_{cw}$ which sets the relaxation rate of interfacial fluctuations in accordance with capillary wave theory. We discover that strong enough activity can cause negative $σ_{cw}$. In this regime, depending on the global composition, the system self-organizes, either into a microphase-separated state in which coalescence is highly inhibited, or into an `active foam' state. Our results are obtained for Active Model B+, a minimal continuum model which, although generic, admits significant analytical progress.
description: as accepted for publication in Phys. Rev. Lett
Theory of Ca$_{10}$Cr$_7$O$_{28}$ as a bilayer breathing-kagome magnet: Classical thermodynamics and semi-classical dynamics
Creators: name: Pohle, Rico
name: Yan, Han
name: Shannon, Nic
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Ca$_{10}$Cr$_7$O$_{28}$ is a novel spin-$1/2$ magnet exhibiting spin liquid behaviour which sets it apart from any previously studied model or material. However, understanding Ca$_{10}$Cr$_7$O$_{28}$ presents a significant challenge, because the low symmetry of the crystal structure leads to very complex interactions, with up to seven inequivalent coupling parameters in the unit cell. Here we explore the origin of the spin-liquid behaviour in Ca$_{10}$Cr$_7$O$_{28}$, starting from the simplest microscopic model consistent with experiment - a Heisenberg model on a single bilayer of the breathing-kagome (BBK) lattice. We use a combination of classical Monte Carlo (MC) simulation and (semi-)classical Molecular Dynamics (MD) simulation to explore the thermodynamic and dynamic properties of this model, and compare these with experimental results for Ca$_{10}$Cr$_7$O$_{28}$. We uncover qualitatively different behaviours on different timescales, and argue that the ground state of Ca$_{10}$Cr$_7$O$_{28}$ is born out of a slowly-fluctuating "spiral spin liquid", while faster fluctuations echo the U(1) spin liquid found in the kagome antiferromagnet. We also identify key differences between longitudinal and transverse spin excitations in applied magnetic field, and argue that these are a distinguishing feature of the spin liquid in the BBK model.
description: 32 pages, 22 figures; two animation videos as supplementary files, see https://www.youtube.com/watch?v=GGug4w4MiKQ and https://www.youtube.com/watch?v=jSRF7MZTiNM