cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stellar Rotation in UCL/LCC with TESS
Creators: name: Rebull, Luisa
name: Stauffer, John
name: Hillenbrand, Lynne
name: Cody, Ann Marie
Publisher: name: Zenodo
Year: 2021
Subjects: Stellar systems, clusters, and associations

description: In recent years, we have been using K2's high precision photometry to probe stellar variability and stellar rotation to lower masses and lower amplitudes than has ever been done before. Younger stars are generally more rapidly rotating and have larger star spots than older stars of similar masses. K2's large field of view was able to monitor a significant fraction of many nearby clusters and associations; some of the nearest associations can only be monitored by TESS, which observes ~85% of the sky. We present initial rotation rates from a TESS study of stars in the ~15 Myr old Upper Centarus-Lupus (UCL)/Lower Centaurus-Crux (LCC) association.
A set of calibrated metaheuristics to address a closed-loop supply chain network design problem under uncertainty
Creators: name: Abdi, Anita
name: Andisheh Abdi
name: Fathollahi-Fard, Amir Mohammad
name: Hajiaghaei-Keshteli, Mostafa
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy
subject: Plant Biology

description: Nowadays, there is a great deal of interest in developing supply chain networks with the goal of optimisation. This paper addresses a new stochastic optimisation model by using a two-stage stochastic programming for a closed-loop supply chain network design problem. To control the uncertainty circumstances of manufacturing of products, customers’ demand, prices of products and its returned rates, the financial risk is considered as a distinguished objective function to find a robust solution. To address the developed model, a new recent nature-inspired algorithm, namely, Whale Optimisation Algorithm (WOA) and also Particle Swarm Optimisation (PSO) as a popular method in swarm intelligence algorithms are utilised in this study. In addition to this development, Genetic Algorithm (GA) and Simulated Annealing (SA) as the well-known metaheuristics used repeatedly among the literature are employed to have a comprehensive comparison. In order to be faired, a popular method for calibration called Response Surface Method (RSM) is applied to tune the algorithms’ parameters. Finally, some evaluation metrics to assess the Pareto optimal fronts of algorithms’ quality are considered to conduct a comparative study using statistical analyses and some sensitivity analyses are performed through an industrial example.
Polynomial Solution of Non-Central Potentials
Creators: name: Ikhdair, Sameer M.
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that the exact energy eigenvalues and eigenfunctions of the Schrodinger equation for charged particles moving in certain class of non-central potentials can be easily calculated analytically in a simple and elegant manner by using Nikiforov and Uvarov (NU) method. We discuss the generalized Coulomb and harmonic oscillator systems. We study the Hartmann Coulomb and the ring-shaped and compound Coulomb plus Aharanov-Bohm potentials as special cases. The results are in exact agreement with other methods.
description: 18 pages
Case report: B-cell lymphoma mimics ITP
Creators: name: Chantana Polprasert Polprasert, Kannadit Prayongrat
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2008
Subjects: thrombocytopenia, splenomegaly, B-cell lymphoma

description: 1, 15, Journal of Medicine and Health Sciences
Bimonotone enumeration
Creators: name: Eisermann, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68P10 (Primary); 11Y50, 68W10, 11Y16, 11D45 (Secondary)

description: Solutions of a diophantine equation $f(a,b) = g(c,d)$, with $a,b,c,d$ in some finite range, can be efficiently enumerated by sorting the values of $f$ and $g$ in ascending order and searching for collisions. This article considers functions that are bimonotone in the sense that $f(a,b) \le f(a',b')$ whenever $a \le a'$ and $b \le b'$. A two-variable polynomial with non-negative coefficients is a typical example. The problem is to efficiently enumerate all pairs $(a,b)$ such that the values $f(a,b)$ appear in increasing order. We present an algorithm that is memory-efficient and highly parallelizable. In order to enumerate the first $n$ values of $f$, the algorithm only builds up a priority queue of length at most $\sqrt{2n}+1$. In terms of bit-complexity this ensures that the algorithm takes time $O(n \log^2 n)$ and requires memory $O(\sqrt{n} \log n)$, which considerably improves on the memory bound $Θ(n \log n)$ provided by a naive approach, and extends the semimonotone enumeration algorithm previously considered by R.L. Ekl and D.J. Bernstein.
description: 22 pages, 7 figures. The algorithms presented here have been implemented as class templates in C++ and are available on the author's homepage
Berkeley Field Methods: Lobi
Creators: name: Hien, Sansan Claude
name: Akolkar, Shweta
name: Galvano, Amber
name: Jarvis, Rebecca
name: Kane, Aurora
name: Kapner, Julianne
name: Liu, Franco
name: Macknick, Anna
name: Sande, Hannah
name: Santos, Masi
name: Yuan, Mingyu
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023

description: This collection consists of Lobi materials collected during a two-semester field methods course at UC Berkeley, taught by Hannah Sande in Fall 2022 and Spring 2023. The class worked with one native speaker of Lobi from Côte d'Ivoire living in the Berkeley, CA area, Sansan Claude Hien. The file bundles are arranged in approximate chronological order, and contain recorded elicitation sessions and texts that are transcribed, glossed and translated, along with grammatical descriptions of particular topics. File bundle titles reflect the grammatical topics investigated in particular sessions.
Accurate Determination of the Neutron Skin Thickness of $^{208}$Pb through Parity-Violation in Electron Scattering
Creators: name: Adhikari, D.
name: Albataineh, H.
name: Androic, D.
name: Aniol, K.
name: Armstrong, D. S.
name: Averett, T.
name: Barcus, S.
name: Bellini, V.
name: Beminiwattha, R. S.
name: Benesch, J. F.
name: Bhatt, H.
name: Pathak, D. Bhatta
name: Bhetuwal, D.
name: Blaikie, B.
name: Campagna, Q.
name: Camsonne, A.
name: Cates, G. D.
name: Chen, Y.
name: Clarke, C.
name: Cornejo, J. C.
name: Dusa, S. Covrig
name: Datta, P.
name: Deshpande, A.
name: Dutta, D.
name: Feldman, C.
name: Fuchey, E.
name: Gal, C.
name: Gaskell, D.
name: Gautam, T.
name: Gayoso, C. Ayerbe
name: Gericke, M.
name: Ghosh, C.
name: Halilovic, I.
name: Hansen, J. -O.
name: Hauenstein, F.
name: Henry, W.
name: Horowitz, C. J.
name: Jantzi, C.
name: Jian, S.
name: Johnston, S.
name: Jones, D. C.
name: Karki, B.
name: Katugampola, S.
name: Keppel, C.
name: King, P. M.
name: King, D. E.
name: Knauss, M.
name: Kumar, K. S.
name: Kutz, T.
name: Lashley-Colthirst, N.
name: Leverick, G.
name: Liu, H.
name: Liyange, N.
name: Malace, S.
name: Mammei, R.
name: Mammei, J.
name: McCaughan, M.
name: McNulty, D.
name: Meekins, D.
name: Metts, C.
name: Michaels, R.
name: Mondal, M. M.
name: Napolitano, J.
name: Narayan, A.
name: Nikolaev, D.
name: Rashad, M. N. H.
name: Owen, V.
name: Palatchi, C.
name: Pan, 14 J.
name: Pandey, B.
name: Park, S.
name: Paschke, K. D.
name: Petrusky, M.
name: Pitt, M. L.
name: Premathilake, S.
name: Puckett, A. J. R.
name: Quinn, B.
name: Radloff, R.
name: Rahman, S.
name: Rathnayake, A.
name: Reed, B. T.
name: Reimer, P. E.
name: Richards, R.
name: Riordan, S.
name: Roblin, Y.
name: Seeds, S.
name: Shahinyan, A.
name: Souder, P.
name: Tang, L.
name: Thiel, 16 M.
name: Tian, Y.
name: Urciuoli, G. M.
name: Wertz, E. W.
name: Wojtsekhowski, B.
name: Yale, B.
name: Ye, T.
name: Yoon, A.
name: Zec, A.
name: Zhang, W.
name: Zhang, J.
name: Zheng, X.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We report a precision measurement of the parity-violating asymmetry $A_{PV}$ in the elastic scattering of longitudinally polarized electrons from $^{208}$Pb. We measure $A_{PV}=550\pm 16 {\rm (stat)}\pm 8\ {\rm (syst)}$ parts per billion, leading to an extraction of the neutral weak form factor $F_W(Q^2 = 0.00616\ {\rm GeV}^2) = 0.368 \pm 0.013$. Combined with our previous measurement, the extracted neutron skin thickness is $R_n-R_p=0.283 \pm 0.071$~fm. The result also yields the first significant direct measurement of the interior weak density of $^{208}$Pb: $ρ^0_W = -0.0796\pm0.0036\ {\rm (exp.)}\pm0.0013\ {\rm (theo.)}\ {\rm fm}^{-3}$ leading to the interior baryon density $ρ^0_b = 0.1480\pm0.0036\ {\rm (exp.)}\pm0.0013\ {\rm (theo.)}\ {\rm fm}^{-3}$. The measurement accurately constrains the density dependence of the symmetry energy of nuclear matter near saturation density, with implications for the size and composition of neutron stars.
title: Adapting Open Source tools to cater for a diverse computing infrastructure
Creators: name: Horwich, A
Publisher: name: Science and Technology Facilities Council
Year: 2010

description: The Scientific Computing Technology Group (SCT) computing infrastructure consists of many different functional services, ranging from high performance compute clusters such as SCARF (a facility run for all of STFC) and the National Service for Computational Chemistry Software (NSCCS), to e-Infrastructure like the UK National Grid Service (NGS), and VMware ESX virtualisation technologies. Alongside site wide STFC policies on security, SCT must also provision mechanisms to effectively manage and monitor the security of these services, seamlessly, with a consistent and cohesive approach. Open Source tools represent a cost effective opportunity to manage infrastructure but often prove inflexible over a heterogeneous collection of services. Additionally, where possible, SCT opt to deploy applications that are included as part of the Red Hat Enterprise Linux (RHEL) suite, as these are actively maintained and patched by Red Hat; this is primarily because all systems managed by SCT utilise RHEL or its Scientific Linux variant. This paper will focus on the efforts made to customise and enhance three Open Source tools: AIDE, Pakiti and Syslog-NG and how these changes have benefitted SCT while still remaining manageable and maintainable.
Συναλλαγματικές Ισοτιμίες – Ανάλυση της ενδοσυνεδριακής μεταβλητότητας των συναλλαγματικών ισοτιμιών
Creators: name: Βαφειάδης, Κωνσταντίνος Παρασκευά
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Συναλλαγματικές Ισοτιμίες
Ενδοσυνεδριακή Μεταβλητότητα
Συναλλαγματικός Κίνδυνος
Exchange Rates
Intra Day Volatility
Exchange Rate Risk

description: Σκοπός της εργασίας αποτελούν οι Συναλλαγματικές Ισοτιμίες. Αναφερθήκαμε στα νομισματικά συστήματα, τις νομισματικές αγορές, το ρόλο των Κεντρικών Τραπεζών, τα συναλλαγματικά αποθέματα και τις νομισματικές επιθέσεις. Ιδιαίτερο κεφάλαιο αποτελεί ο Συναλλαγματικός Κίνδυνος, οι επιπτώσεις του και η αντιστάθμισή του. Στην εμπειρική μελέτη αναλύσαμε την ενδοσυνεδριακή μεταβλητότητα των συναλλαγματικών ισοτιμιών σε διαστήματα ενός λεπτού. Βρέθηκαν τα patterns που ακολουθεί η ενδοσυνεδριακή μεταβλητότητα των συναλλαγματικών ισοτιμιών, μελετήθηκε η παγκόσμια οικονομική κρίση υπό το πρίσμα της μεταβλητότητας των συναλλαγματικών ισοτιμιών και η ύπαρξη συσχέτισης μεταξύ των νομισμάτων. Τα ευρήματα εισηγούνται ότι το Φράγκο Ελβετίας αποτελεί ένα σταθερό και χαμηλού κινδύνου νόμισμα. Επίσης, αποτυπώθηκε η παγκόσμια οικονομική κρίση του 2008 στο πεδίο του συναλλάγματος, καθώς η ενδοσυνεδριακή μεταβλητότητα των ισοτιμιών εκτοξεύτηκε. Τέλος, αποδείχτηκε ότι υπάρχει ισχυρή αλληλεπίδραση μεταξύ των αγορών, ότι μεταφέρεται η μεταβλητότητα από αγορά σε αγορά (meteor shower) και δημιουργούνται peaks υψηλής ενδοσυνεδριακής μεταβλητότητας τις χρονικές στιγμές σημαντικών οικονομικών ανακοινώσεων.
description: The aim of the present thesis is the study of exchange rates. We refer to Monetary Systems, the foreign exchange markets, the crucial role of Central Banks, the foreign exchange reserves and the monetary attacks. A separate chapter is exchange rate risk, the impacts that it results and the way to hedge the risk. In the empirical study, we analyze the Intra Day Volatility of exchange rates utilizing 1 minute intervals. The patterns of intra day volatility is depicted. We study the economic crisis focusing on the volatility of exchange rates and the existence of correlation between the currencies. The results indicate that the Swiss Franc is characterized by stability and low danger. The world economic crisis in 2008 is imprinted on the diagram of annual volatility. At the same time, volatility of exchange rates exhibited a significantly positive correlation. Finally, we evidence the interaction between benchmark markets, the economic phenomenon called meteor shower and the fact that macroeconomic announcements cause rise to intra day volatility of exchange rates.
Evaluating the productivity of referral processes : Habitat referrals in British Columbia
Creators: name: Arduino, Maria Serena
Publisher: name: University of British Columbia
Year: 2009

description: This thesis develops a set of criteria and a framework for assessing the productivity of the habitat referral process operating in British Columbia. The habitat referral process is a mechanism by which applications for projects potentially affecting fish habitat are referred to the Department of Fisheries and Oceans by other government agencies or directly by applicants. Approvals, usually in the form of permits, leases or licenses, are issued or refused depending on the comments that the Department of Fisheries and Oceans and other agencies have expressed when reviewing the application. There are four good reasons for studying this topic: 1) as one of the government's activities the referral process is included in the major review of government programs that is presently being undertaken; 2) there is evidence that some of the existing referral processes are unproductive: discontent is being expressed by the people involved in referrals, and the process itself shows obvious signs that there are problems (backlogs, delays, overtime); 3) criteria and a framework for assessing the productivity of referral processes were not available before this study; and 4) referrals account for a considerable portion of the workload of the Habitat Management function of the Department of Fisheries and Oceans. In the thesis, firstly the referral process is set in the context of the governance system: its relationships with the other processes and mechanisms used in decision-making for resource management and protection are described. Secondly, a framework for assessing the productivity of the referral process is developed. This was derived mainly from the literature on productivity improvement and decision-making. Finally, the set of criteria is developed, drawing from the interviews with people involved in referrals, an analysis of the evolution of the referral process, and the specific literature on the referral mechanism. The criteria are displayed in a tree, from the most general to the most specific. Criteria are then explained and discussed individually, and examples of how the criteria can be translated into practical terms are also provided. The criteria help identify problems in the referral processes under review and suggest possible solutions. The improvement of the performance of the referral mechanism is seen in the context of its evolution. It is recognized that the trend is toward more upfront planning and consequently fewer projects being reviewed through referrals. This 'tool' - the criteria and framework - will prove useful to anybody who wants to assess the productivity of the habitat or other referral processes. It will help them to identify the problems and to find the appropriate solutions.
Evidence for excitonic polarons in InAs/GaAs quantum dots
Creators: name: Preisler, Vanessa
name: Grange, Thomas
name: Ferreira, Robson
name: De Vaulchier, Louis-Anne
name: Guldner, Yves
name: Teran, Fransisco José
name: Potemski, Marek
name: Lemaître, Aristide
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the interband transitions in several ensembles of self-assembled InAs/GaAs quantum dots by using photoluminescence excitation spectroscopy under strong magnetic field. Well defined resonances are observed in the spectra. A strong anticrossing between two transitions is observed in all samples, which cannot be accounted for by a purely excitonic model. The coupling between the mixed exciton-LO phonon states is calculated using the Fröhlich Hamiltonian. The excitonic polaron energies as well as the oscillator strengths of the interband transitions are determined. An anticrossing is predicted when two exciton-LO phonon states have close enough energies with phonon occupations which differ by one. A good agreement is found between the calculations and the experimental data evidencing the existence of excitonic polarons.
Systematic KMTNet Planetary Anomaly Search, Paper II: Six New $q<2\times 10^{-4}$ Mass-ratio Planets
Creators: name: Hwang, Kyu-Ha
name: Zang, Weicheng
name: Gould, Andrew
name: Udalski, Andrzej
name: Bond, Ian A.
name: Yang, Hongjing
name: Mao, Shude
name: Albrow, Michael D.
name: Chung, Sun-Ju
name: Han, Cheongho
name: Jung, Youn Kil
name: Ryu, Yoon-Hyun
name: Shin, In-Gu
name: Shvartzvald, Yossi
name: Yee, Jennifer C.
name: Cha, Sang-Mok
name: Kim, Dong-Jin
name: Kim, Hyoun-Woo
name: Kim, Seung-Lee
name: Lee, Chung-Uk
name: Lee, Dong-Joo
name: Lee, Yongseok
name: Park, Byeong-Gon
name: Pogge, Richard W.
name: Mróz, Przemek
name: Poleski, Radek
name: Skowron, Jan
name: Szymański, Michal K.
name: Soszyński, Igor
name: Pietrukowicz, Pawel
name: Kozlowski, Szymon
name: Ulaczyk, Krzysztof
name: Rybicki, Krzysztof A.
name: Iwanek, Patryk
name: Wrona, Marcin
name: Gromadzki, Mariusz
name: Abe, Fumio
name: Barry, Richard
name: Bennett, David P.
name: Bhattacharya, Aparna
name: Fujii, Hirosame
name: Fukui, Akihiko
name: Hirao, Yuki
name: Itow, Yoshitaka
name: Kirikawa, Rintaro
name: Kondo, Iona
name: Koshimoto, Naoki
name: Munford, Brandon
name: Matsubara, Yutaka
name: Miyazaki, Shota
name: Muraki, Yasushi
name: Olmschenk, Greg
name: Ranc, Clément
name: Rattenbury, Nicholas J.
name: Satoh, Yuki K.
name: Shoji, Hikaru
name: Silva, Stela Ishitani
name: Sumi, Takahiro
name: Suzuki, Daisuke
name: Tristram, Paul J.
name: Yonehara, Atsunori
name: Zhang, Xiangyu
name: Zhu, Wei
name: Penny, Matthew T.
name: Fouqué, Pascal
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We apply the automated AnomalyFinder algorithm of Paper I (Zang et al. 2021b) to 2018-2019 light curves from the $\simeq 13\,{\rm deg}^2$ covered by the six KMTNet prime fields, with cadences $Γ\geq 2\,{\rm hr}^{-1}$. We find a total of 11 planets with mass ratios $q<2\times 10^{-4}$, including six newly discovered planets, one planet that was reported in Paper I, and recovery of four previously discovered planets. One of the new planets, OGLE-2018-BLG-0977Lb, is in a planetary-caustic event, while the other five (OGLE-2018-BLG-0506Lb, OGLE-2018-BLG-0516Lb, OGLE-2019-BLG-1492Lb, KMT-2019-BLG-0253, and KMT-2019-BLG-0953) are revealed by a "dip" in the light curve as the source crosses the host-planet axis on the opposite side of the planet. These subtle signals were missed in previous by-eye searches. The planet-host separations (scaled to the Einstein radius), $s$, and planet-host mass ratios, $q$, are, respectively, $(s,q\times 10^5) = (0.88, 4.1)$, $(0.96\pm 0.10, 8.3)$, $(0.94\pm 0.07, 13)$, $(0.97\pm 0.07, 18)$, $(0.97\pm0.04,4.1)$, and $(0.74,18)$, where the "$\pm$" indicates a discrete degeneracy. The 11 planets are spread out over the range $-5
description: 58 pages, 9 figures, 12 tables, submitted to AJ
The Simplest Solution to an Underdetermined System of Linear Equations
Creators: name: Donoho, David
name: Kakavand, Hossein
name: Mammen, James
Publisher: name: arXiv
Year: 2007
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Consider a d*n matrix A, with d
description: Proceedings of the IEEE International Symposium on Information Theory Seattle, Washington, July 9-14, 2006
The effect of Kaempferia parviflora extracts on platelet functions in vitro
Creators: name: Anunya Nawinprasert Nawinprasert, Sriamporn Hnuklab
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2008
Subjects: Kaempferia parviflora, platelet function, ADP, Epinephrine

description: 1, 15, Journal of Medicine and Health Sciences
Quantitative modeling of laser speckle imaging
Creators: name: Zakharov, P.
name: Voelker, A. C.
name: Buck, A.
name: Weber, B.
name: Scheffold, F.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We have analyzed the image formation and dynamic properties in laser speckle imaging (LSI) both experimentally and with Monte-Carlo simulation. We show for the case of a liquid inclusion that the spatial resolution and the signal itself are both significantly affected by scattering from the turbid environment. Multiple scattering leads to blurring of the dynamic inhomogeneity as detected by LSI. The presence of a non-fluctuating component of scattered light results in the significant increase in the measured image contrast and complicates the estimation of the relaxation time. We present a refined processing scheme that allows a correct estimation of the relaxation time from LSI data.
description: submitted to Optics Letters
Masking singularities in Weyl gravity and Ricci flows
Creators: name: Dzhunushaliev, Vladimir
name: Folomeev, Vladimir
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Within vacuum Weyl gravity, we obtain a solution by which, using different choices of the conformal factor, we derive metrics describing (i)~a bounce of the universe; (ii)~toroidal and spherical wormholes; and (iii)~a change in metric signature. It is demonstrated that singularities occurring in these systems are "masked". We give a simple explanation of the possibility of masking the singularities within Weyl gravity. It is shown that in the first and third cases the three-dimensional metrics form Ricci flows. The question of the possible applicability of conformal Weyl gravity as some phenomenological theory in an approximate description of quantum gravity is discussed.
description: 10 pages
The Prevalence of Group B Streptococcus in First and Third Trimester Pregnancy
Creators: name: Pawin Puapornpong, Somchai Santiwatanakul
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2008
Subjects: group B streptococcus, pregnancy, prevalence

description: 1, 15, Journal of Medicine and Health Sciences
Stochastische Euler-Euler-PDF-Methodik für das Zwei-Fluid-Modell und Anwendung auf kavitierende Strömungen der Automobilindustrie
Creators: name: Raquet, Martin R.
Publisher: name: Karlsruhe
Year: 2019
Subjects: Stochastische Feldmethode
stochastic field method
PDF
probability density function
Wahrscheinlichkeitsdichtefunktion
Einspritzdüse
stochastisch
Euler-Euler
Kavitation
Zwei-Fluid-Modell
Two-Fluid Model
PDF-Transportgleichung
Zweiphasenströmung

description: Die vorliegende Arbeit befasst sich mit der Anwendung der Stochastischen Feldmethode auf Zweiphasenströmungen. Die Stochastische Feldmethode und die zugehörige PDF-Transportgleichung wurden ursprünglich für den Bereich reaktiver Strömungen formuliert mit dem Ziel, nichtlineare Reaktionsterme zu schließen. Die Stochastische Feldmethode kann im Bereich von Zweiphasenströmungen für die Modellierung des Phasenübergangs genutzt werden. Die Formulierung der zugehörigen PDF-Transportgleichung unterscheidet sich von derjenigen für reaktive Strömungen. Da bisherige Anwendungen der Stochastischen Feldmethode auf Zweiphasenströmungen auf Analogiebeziehungen beruhen, erfolgt in der vorliegenden Arbeit eine ausführliche Diskussion beider Bereiche. Die PDF-Transportgleichung für den Volumenanteil der dispersen Phase wird für das Zwei-Fluid-Modell und für das Drift-Flux-Modell hergeleitet. Die Relation der stochastischen Felder mit einer realen Strömung wird diskutiert und mit konkurrierenden Modellen verglichen. In diesem Zusammenhang wird erörtert, wie mit der Stochastischen Feldmethode die Blasengrößenverteilung einer realen Strömung berechnet werden kann. Mehrere Implementierungsmöglichkeiten der Stochastischen Feldmethode in die kommerzielle Software AVL FIRE™ werden diskutiert. Zwei Varianten zur Berücksichtigung stochastischer Fluktuationen im Quellterm der dispersen Phase aufgrund einer fluktuierenden Keimanzahl bzw. turbulenter Fluktuationen werden für das Zwei-Fluid-Modell implementiert. Sie werden anhand eines zweidimensionalen und eines dreidimensionalen Injektors aus der Automobilindustrie verifiziert und validiert. Es wird untersucht, ob mit der Variante der Stochastischen Feldmethode zur Berücksichtigung turbulenter Fluktuationen ein Mehrwert bei der Berechnung einer intermittierend kavitierenden Strömung erzielt werden kann. Das herkömmliche Zwei-Fluid-Modell im RANS-Kontext scheitert an einer Reproduktion der experimentell nachweisbaren Intermittenz. Aufwändigere LES-Berechnungen sind erforderlich, um den Einfluss lokaler Fluktuationen und damit die intermittierend kavitierende Strömung nachzubilden. Die implementierte Variante der Stochastischen Feldmethode ist in der Lage, die Intermittenz im RANS-Kontext qualitativ nachzubilden, ohne dabei die lokalen Effekte aufzulösen. Sie erlaubt die Bewertung der Strömung in einem RANS-Kontext und vermeidet aufwändigere LES-Berechnungen. In der industriellen Praxis werden hierdurch Entwicklungszeit sowie -kosten reduziert.
Factors effecting on breastfeeding success in infants up to 6 months of age in Nakhon Nayok province
Creators: name: Pawin Puapornpong, Wichian Manolertthewan
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2009
Subjects: factors effect on exclusive breastfeeding, exclusive 6-month breastfeeding, exclusive breastfeeding

description: 3, 16, Journal of Medicine and Health Sciences
Production experiment, subject R1
Creators: name: Lau-Preechathammarach, Raksit Tyler
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2023
Subjects: subject: kdt

description: Target and distractor stimuli embedded in carrier sentences. Subject is a 23-year-old female. This subject has been asked a wordlist before so not valid for experiment. Carried out in a quiet room in the temple of Wat Nakharin in Ban Khi Nak.
Massive Overlap Fermions on Anisotropic Lattices
Creators: name: Li, Xin
name: Meng, Guozhan
name: Feng, Xu
name: Liu, Chuan
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We formulate the massive overlap fermions on anisotropic lattices. We find that the dispersion relation for the overlap fermion resembles the continuum form in the low-momentum region once the bare parameters are properly tuned. The quark self-energy and the quark field renormalization constants are calculated to one-loop in bare lattice perturbation theory. We argue that massive domain wall quarks might be helpful in lattice QCD studies on heavy-light hadron spectroscopy.
description: 21 pages, 5 figures, one reference added compared with v.1
Earth as a transducer for dark-photon dark-matter detection
Creators: name: Fedderke, Michael A.
name: Graham, Peter W.
name: Kimball, Derek F. Jackson
name: Kalia, Saarik
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We propose the use of the Earth as a transducer for ultralight dark-matter detection. In particular we point out a novel signal of kinetically mixed dark-photon dark matter: a monochromatic oscillating magnetic field generated at the surface of the Earth. Similar to the signal in a laboratory experiment in a shielded box (or cavity), this signal arises because the lower atmosphere is a low-conductivity air gap sandwiched between the highly conductive interior of the Earth below and ionosphere or interplanetary medium above. At low masses (frequencies) the signal in a laboratory detector is usually suppressed by the size of the detector multiplied by the dark-matter mass. Crucially, in our case the suppression is by the radius of the Earth, and not by the (much smaller) height of the atmosphere. We compute the size and global vectorial pattern of our magnetic field signal, which enables sensitive searches for this signal using unshielded magnetometers dispersed over the surface of the Earth. In principle, the signal we compute exists for any dark photon in the mass range $10^{-21} \text{eV}\lesssim m_{A'} \lesssim 3\times 10^{-14} \text{eV}$. We summarize the results of our companion paper [arXiv:2108.08852], in which we detail such a search using a publicly available dataset from the SuperMAG Collaboration: we report no robust signal candidates and so place constraints in the (more limited) dark-photon dark-matter mass range $2\times 10^{-18} \text{eV} \lesssim m_{A'} \lesssim 7\times 10^{-17} \text{eV}$ (corresponding to frequencies $6\times 10^{-4} \text{Hz}\lesssim f \lesssim 2\times 10^{-2} \text{Hz}$). These constraints are complementary to existing astrophysical bounds. Future searches for this signal may improve the sensitivity over a wide range of ultralight dark-matter candidates and masses.
description: 37 pages, 5 figures. Published version. v3 reflects an update to an acknowledgment
The Monjas Complex at Chichen Itza, Yucatan : Gendered spaces, domestic labour, and ideology
Creators: name: Ruscheinsky, Lynn Marie
Publisher: name: University of British Columbia
Year: 2009

description: My thesis will take up the challenge presented by Joan Wallach Scott of writing a new history, through an analysis not only of the relationship between male and female experience in the past, but also of the connection between past history and current historical practice. The underlying purpose of my thesis is to resist the colonialist appropriations produced by a primitivizing discourse, of which a vital component has been the erasure of gender from the archaeological record. History figures in this approach not exclusively as a record of changes in the social organization of ancient Maya society, but rather will be taken more crucially into account as a participant in the production of knowledge that reproduces gender asymmetry. From the earliest archaeological research in the mid-nineteenth century, which sought to establish the origin of the ancient Maya, to current Americanist discourses which attempt to classify Maya sociopolitical systems, the Monjas complex at Chichen Itza has played a vital role. Each of the interpretations of the Monjas has involved a similar process of selecting and decontextualizing fragments of data. The bulk of archaeological data has been provided by John Bolles' excavation of the Monjas in 1932-34 for the Carnegie Institution of Washington. In order to reinforce 'primitivist' views of the ancient Maya, scholars ignored evidence of residential function. Although recognizing residential patterns, processual archaeologists have also applied primitivist notions thus, organization within the lineage is presumed to be corporate, reciprocal, egalitarian. In this thesis I will explore the ideological uses of material objects constructing social relationships, and will instead argue that the function of the Monjas structure as a lineage residence included segregation based primarily on gender. I will suggest ways in which the subtle and active role played by these historically specific material remains could be seen to have produced and reproduced a gender hierarchy.
Effects of Rotation on Thermal-Gravitational Instability in the Protogalactic Disk Environment
Creators: name: Baek, Chang Hyun
name: Ryu, Dongsu
name: Kang, Hyesung
name: Kim, Jongsoo
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Thermal-gravitational instability (TGI) is studied in the protogalactic environment. We extend our previous work, where we found that dense clumps first form out of hot background gas by thermal instability and later a small fraction of them grow to virialized clouds of mass M_c >~ 6X10^6 M_sun by gravitational infall and merging. But these clouds have large angular momentum, so they would be difficult, if not impossible, to further evolve into globular clusters. In this paper, through three-dimensional hydrodynamic simulations in a uniformly rotating frame, we explore if the Coriolis force due to rotation in protogalactic disk regions can hinder binary merging and reduce angular momentum of the clouds formed. With rotation comparable to the Galactic rotation at the Solar circle, the Coriolis force is smaller than the pressure force during the early thermal instability stage. So the properties of clumps formed by thermal instability are not affected noticeably by rotation, except increased angular momentum. However, during later stage the Coriolis force becomes dominant over the gravity, and hence the further growth to gravitationally bound clouds by gravitational infall and merging is prohibited. Our results show that the Coriolis force effectively destroys the picture of cloud formation via TGI, rather than alleviate the problem of large angular momentum.
description: To appear in ApJ Lett. (June 1, 2006, v643n2). Pdf with full resolution figures can be downloaded from http://canopus.cnu.ac.kr/ryu/baeketal.pdf
title: Auto-AG : enhancing the user experience for access Grid meetings
Creators: name: Horwich, A
Publisher: name: Science and Technology Facilities Council
Year: 2010

description: Access Grid is a multi-site, group-to-group conferencing tool utilised in large scale collaboration projects such as the UK National Grid Service (NGS) and allows the Scientific Computing Technology Group (SCT), which is split between a Rutherford and Daresbury Campus, to communicate cost-free. This report intends to outline some of the key developments which have enabled Auto-AG to become an essential tool for setting up Access Grid meetings within the STFC. This tool is used in all three main Access Grid facilities in the e-Science department and caters for each unique room setup. By providing a rich feature set, encompassing many features found within the Venue Client, Auto-AG ensures meetings commence with little to no interruption, allowing both experienced operators and new users alike to set up meetings. Auto-AG simplifies the set-up process by implementing easy to use ?right click? positioning systems to allow operators to automatically place video feeds, it also automate processes for turning on and off conference room Audio and Video equipment. In order to provide an accessible interface, Auto-AG also de-clutters the user environment and consolidates key Venue Client features. Auto-AG also introduces a ?tutorial mode?, guiding users through the process of setting up meetings.
Effect of tidal curvature on dynamics of accelerated probes
Creators: name: K, Hari
name: Kothawala, Dawood
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We obtain a remarkable semi-analytic expression concerning the role of purely tidal curvature on accelerated probes, revealing some novel insights into the role of absolute vs. tidal acceleration in the response of such probes. The key quantity we evaluate is the relation between geodesic ($τ_{\rm geod}$) and proper time ($τ_{\rm acc}$) intervals between events on the probe trajectory. This is obtained as a covariant power series in curvature using a combination of analytical and numerical tools. A serendipitous observation then reveals that one can $exactly$ sum all terms involving the $purely\;tidal$ component ${\mathscr E}_n= R_{abcd} \varepsilon^{ab} \varepsilon^{cd}$ of curvature, with $\varepsilon^{ab}$ the bi-normal to the plane of motion: $$ τ_{\rm geod} = \frac{2}{\sqrt{{-\mathscr E}_n}} \sinh ^{-1}\Biggl[\sqrt{\frac{-{\mathscr E}_n}{a^2-{\mathscr E}_n}} \sinh \left(\frac{1}{2} \sqrt{a^2-{\mathscr E}_n} \; τ_{\rm acc} \right) \Biggl] $$ For classical clocks, the above result represents an interesting closed form contribution of tidal curvature to the differential ageing of twins in the classic $Twin\;paradox$. For quantum probes, it gives a thermal contribution to the $detector\;response$ with a modified $Unruh\;temperature$ $$ [k_{\rm B} T]_{{\mathscr E}_n} = \frac{\hbar \sqrt{a^2- {\mathscr E}_n }}{2 π} $$ As an operational tool, the computational framework we present and the corresponding results should find applications to a wide range of physical problems that involve measurements and observations by use of accelerated probes in curved spacetimes.
description: 11 pages, 3 figures
Submillimetre/TeraHertz Astronomy at Dome C with CEA filled bolometer array
Creators: name: Minier, Vincent
name: Durand, Gilles
name: Lagage, Pierre-Olivier
name: Talvard, Michel
name: Travouillon, Tony
name: Busso, Maurizio
name: Tosti, Gino
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Submillimetre/TeraHertz (e.g. 200, 350, 450 microns) astronomy is the prime technique to unveil the birth and early evolution of a broad range of astrophysical objects. A major obstacle to carry out submm observations from ground is the atmosphere. Preliminary site testing and atmospheric transmission models tend to demonstrate that Dome C could offer the best conditions on Earth for submm/THz astronomy. The CAMISTIC project aims to install a filled bolometer-array camera with 16x16 pixels on IRAIT at Dome C and explore the 200-$μ$m windows for potential ground-based observations.
description: 6 pages
ALTO: Adaptive Linearized Storage of Sparse Tensors
Creators: name: Helal, Ahmed E.
name: Laukemann, Jan
name: Checconi, Fabio
name: Tithi, Jesmin Jahan
name: Ranadive, Teresa
name: Petrini, Fabrizio
name: Choi, Jeewhan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: The analysis of high-dimensional sparse data is becoming increasingly popular in many important domains. However, real-world sparse tensors are challenging to process due to their irregular shapes and data distributions. We propose the Adaptive Linearized Tensor Order (ALTO) format, a novel mode-agnostic (general) representation that keeps neighboring nonzero elements in the multi-dimensional space close to each other in memory. To generate the indexing metadata, ALTO uses an adaptive bit encoding scheme that trades off index computations for lower memory usage and more effective use of memory bandwidth. Moreover, by decoupling its sparse representation from the irregular spatial distribution of nonzero elements, ALTO eliminates the workload imbalance and greatly reduces the synchronization overhead of tensor computations. As a result, the parallel performance of ALTO-based tensor operations becomes a function of their inherent data reuse. On a gamut of tensor datasets, ALTO outperforms an oracle that selects the best state-of-the-art format for each dataset, when used in key tensor decomposition operations. Specifically, ALTO achieves a geometric mean speedup of 8X over the best mode-agnostic (coordinate and hierarchical coordinate) formats, while delivering a geometric mean compression ratio of 4.3X relative to the best mode-specific (compressed sparse fiber) formats.
description: Accepted to ICS 2021
The context for planning in Canada : A critique of Canadian political economy perspectives
Creators: name: Burgess, William Irvine
Publisher: name: University of British Columbia
Year: 2009

description: The Canadian political economy school has argued since the late 1960s that Canada shares economic and social characteristics with semi-colonial third world countries. Consistent with this 'dependency' influenced assessment of the Canadian social formation it has also usually argued that national economic sovereignty should be a strategic concern in popular and socialist programs. This study critically evaluates this view of the economic and social context for planning interventions in Canada, in particular by examining the main empirical evidence traditionally advanced in its favour, namely the relative extent of foreign economic control in the Canadian economy. The study first reviews the various characterizations of Canada in the political economy literature, with an emphasis on the empirical evidence offered in their support. It then extends and broadens previous examinations of foreign economic control in Canada using recently released Statistics Canada data on foreign control of corporate assets and revenue up to 1992, and by comparing Canada with other OECD countries on the basis of the extent of inward and outward foreign direct investment (FDI). The studies main findings are that: i) The exclusion of the financial industries in most previous discussions of the level of foreign economic control in Canada has resulted in the actual level being overstated - in nominal terms, by about one-quarter; ii) Contrary to dependency influenced predictions of the period, foreign control of the Canadian economy decreased very significantly after the early 1970s, though this declining trend apparently ended and even partially reversed after the mid 1980s. Given the central place of the US in dependency accounts it is notable that the decline in US economic control has been greater than for all foreign control, and does not appear to have recovered in the recent period up to 1992; iii) The dependency influenced categorization of Canada with countries like 'semicolonial' Argentina or even 'peripheral' Spain cannot be sustained when the evidence shows that in absolute, but especially relative terms, Canada ranks as a world leader in the scale of direct investments held in other countries. Canadian FDI in the US has also been growing considerably faster than has US FDI in Canada; iv) The level of foreign economic penetration in Canada is notably higher than most OECD countries. However, when the relative size of the Canadian economy, a 'natural' degree of continental integration and recent trends among other OECD countries are considered, Canada is not as exceptional in this regard as has often been suggested. The study concludes that this evidence indicates that Canada is more accurately conceived of as a major advanced capitalist country than a dependent (if rich) semi-colony, and that planning interventions based on the latter assessment are not only likely to fail, they are a major diversion from the required strategy.
Η συγκριτική εξέταση του [+λογίου] επιπέδου στο λεξιλόγιο παιδιών ΣΤ΄ Δημοτικού και Γ΄ Γυμνασίου, με και χωρίς μαθησιακές δυσκολίες
Creators: name: Κοντοπού, Αικατερίνη Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: [+λόγιο]
[-λόγιο]
Μαθησιακές δυσκολίες
[+learned]
[-learned]
learning disabilities

description: Το [+λόγιο] επίπεδο της νέας ελληνικής γλώσσας αποτελούν όλα τα κληρονομημένα τεμάχια, δομές ή διαδικασίες, σε όλα τα επίπεδα της γλώσσας, δηλαδή φωνολογία, μορφολογία, σημασιολογία, σύνταξη, αλλά και του λεξιλογίου, που χρησιμοποιούνται κυρίως σε επίσημο/τυπικό χρηστικό επίπεδο. Σκοπός της παρούσας έρευνας είναι να παρουσιάσει το [+λόγιο] επίπεδο της γλώσσας και να ελέγξει αν υφίσταται στο λεξιλόγιο των παιδιών της ΣΤ΄ Δημοτικού και της Γ΄ Γυμνασίου. Επιπλέον, να παρουσιαστούν οι μαθησιακές δυσκολίες και να εξεταστεί αν υφίσταται το [+λόγιο] επίπεδο στο λεξιλόγιό των παιδιών με μαθησιακές δυσκολίες. Επίσης, διερευνάται αν μετά τη διδασκαλία των αρχαίων ελληνικών το επίπεδο του [+λογίου] διατηρείται αλλά και ποιοι παράγοντες (μορφολογία, φωνολογία, σύνταξη και λεξιλόγιο) φαίνονται ελλειμματικοί.
description: The learned/ formed register in Modern Greek is inherited segments, structures and processes from previous stage of Greek language, at all levels of language, that is phonology, morphology, syntax, semantics and vocabulary, which are used at formal level. The purpose of current research is to present the learned/ formed level of language and to control if its exist at vocabulary of sixth grade of elementary school students and at third grade of high school students. Also, to present the learning difficulties and to check if the learned/ formed register exist at students’ with learning difficulties vocabulary. In addition, investigate whether the level of learned/ formed maintain after learning of Ancient Greek and in which element (morphology, phonology, syntax and vocabulary) are more deficit.
Topological quantization of ensemble averages
Creators: name: Prodan, Emil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We define the current of a quantum observable and, under well defined conditions, we connect its ensemble average to the index of a Fredholm operator. The present work builds on a formalism developed by Kellendonk and Schulz-Baldes \cite{Kellendonk:2004p597} to study the quantization of edge currents for continuous magnetic Schroedinger operators. The generalization given here may be a useful tool to scientists looking for novel manifestations of the topological quantization. As a new application, we show that the differential conductance of atomic wires is given by the index of a certain operator. We also comment on how the formalism can be used to probe the existence of edge states.
description: 16 pages, 2 figures
Energy cascades in rapidly rotating and stratified turbulence within elongated domains
Creators: name: van Kan, Adrian
name: Alexakis, Alexandros
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: We study forced, rapildy rotating and stably stratified turbulence in an elongated domain using an asymptotic expansion at simultaneously low Rossby number $Ro\ll1$ and large domain height compared to the energy injection scale, $h=H/\ell_{in}\gg1$. The resulting equations depend on the parameter $λ=(h Ro )^{-1}$ and the Froude number $Fr$. An extensive set of direct numerical simulations (DNS) is performed to explore the parameter space $(λ,Fr)$. We show that a forward energy cascade occurs in one region of this space, and a split energy cascade outside it. At weak stratification (large $Fr$), an inverse cascade is observed for sufficiently large $λ$. At strong stratification (small $Fr$) the flow becomes approximately hydrostatic and an inverse cascade is always observed. For both weak and strong stratification, we present theoretical arguments supporting the observed energy cascade phenomenology. Our results shed light on an asymptotic region in the phase diagram of rotating and stratified turbulence, which is difficult to attain by brute-force DNS.