cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exact weight cancellation in Monte Carlo eigenvalue transport problems
Creators: name: Belanger, Hunter
name: Mancusi, Davide
name: Zoia, Andrea
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Random walks are frequently used as a model for very diverse physical phenomena. The Monte Carlo method is a versatile tool for the study of the properties of systems modelled as random walks. Often, each walker is associated with a statistical weight, used in the estimation of observable quantities. Weights are typically assumed to be positive; nonetheless, some applications require the use of positive and negative weights or complex weights, and often pose particular challenges with convergence. In this paper, we examine such a case from the field of nuclear reactor physics, where the negative particle weights prevent the power iteration algorithm from converging on the sought fundamental eigenstate of the Boltzmann transport equation. We demonstrate how the use of weight cancellation allows convergence on the physical eigenstate. To this end, we develop a novel method to perform weight cancellation in an exact manner, in three spatial dimensions. The viability of this algorithm is then demonstrated on a reactor physics problem.
description: 21 pages, 18 figures
Elicitation session: Transitive and ditransitive verbs
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: 12 WAV files, 1 PDF file. PDF file is scan of corresponding pages from Lionnet's field notes (pp. 100-114). See related file bundle for Hyman field notes.
The SU(3) bosons and the spin nematic state on the spin-1 bilinear-biquadratic triangular lattice
Creators: name: Li, Peng
name: Zhang, Guang-Ming
name: Shen, Shun-Qing
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A bond-operator mean-field theory in the SU(3) bosons representation is developed to describe the antiferro-nematic phase of the spin-1 bilinear-biquadratic model. The calculated static structure factors reveal delicately that the antiferro-nematic state may exhibit both the ferro- and antiferro-quadruple long-range orders, which is reminiscent of the ferrimagnets or the canted antiferromagnets. This result may influence the spin wave theory concerned with this phase. Possible relevance of this unconventional state to the quasi-two-dimensional triangular material NiGa2S4 is addressed.
description: 8pages, 6figures
The effects of changing the interstimulus interval during habituation in Caeorhaditis elegans
Creators: name: Broster, Brett S.
Publisher: name: University of British Columbia
Year: 2008

description: Although habituation is one of the simplest forms of non-associative learning, its underlying neural mechanisms are still not well understood. One factor that plays a key role in habituation is interstimulus interval (ISI). Understanding, at a behavioural level, the effects that ISI has on habituation may provide important insights into the cellular events involved in this form of learning. The experiments in this thesis further explored the role of ISI in habituation of the reversal response of the nematode Caenorhabditis elegans by examining the effect of changing the ISI during habituation training. The effect of ISI change was examined in terms of both its impact on habituation and its impact on spontaneous recovery from habituation. One type of ISI change tested was continual variation in the ISI used during habituation. When habituation stimuli were delivered at variable ISIs having an overall average of 10 s the recovery from habituation observed was slower than that seen when habituation stimuli were given at regular 10 s intervals. A comparison of fixed and variable stimulation during habituation with a 60-s ISI revealed no differences in recovery rate. Thus, the impact of variable ISIs during habituation on recovery from habituation was noticeable at a 10-s ISI, but not a 60-s ISI. In a second experiment, the effect of shifting to a different ISI part-way through habituation training was explored. Whether the shift was from a 10-s ISI to a 60-s ISI or a 60- to a 10-s ISI, in both cases the recovery rate (which is typically different for each ISI on its own) observed after habituation was primarily determined by the ISI given in the last half of the habituation treatment. Examination of the impact on response patterns resulting from variation or change in ISI generated a model of how response potential may interact with ISI that can be used to further understand the relationship between ISI and response magnitude during habituation.
Band insulator to Mott insulator transition in a bilayer Hubbard model
Creators: name: Kancharla, S. S.
name: Okamoto, S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The ground state phase diagram of the half-filled repulsive Hubbard model in a bilayer is investigated using cluster dynamical mean field theory. For weak to intermediate values of Coulomb repulsion $U$, the system undergoes a transition from a Mott insulating phase to a metallic phase and then onto a band insulating phase as the interlayer hopping is increased. In the strong coupling case, the model exhibits a direct crossover from a Mott insulating phase to a band insulating phase. These results are robust with respect to the presence or absence of magnetic order.
description: 4 pages; 5 figures, submitted to Phys. Rev. B
The Valuation of Social Reinforcement in Schizophrenia
Creators: name: Catalano, Lauren Theresa
Publisher: name: Digital Repository at the University of Maryland
Year: 2015
Subjects: subject: Psychology
subject: FOS: Psychology
subject: Mental health
subject: Behavioral Economics
subject: Decision Making
subject: Schizophrenia
subject: Social Affiliation
subject: Social Reward Learning

description: Facial affect perception impairments impede social functioning in schizophrenia. What remains unknown is how individuals with schizophrenia assign value to pleasant facial expressions that typically motivate social affiliation. The current study adapted a matching pennies game (Shore & Heerey, 2011) to assess the subjective value of social feedback in terms of money. Individuals with schizophrenia and controls were instructed to choose the same side of a coin as six computerized partners, each of whom provided different rates of monetary feedback and types of social feedback. In a later test phase, participants chose which partner to play from amongst pairs of partners. Among participants who appropriately learned task contingencies, individuals with schizophrenia failed to use genuine smiles to motivate choices to the same extent as controls; however, money was equally valued. These findings suggest that there is a reduced sensitivity to social rewards in schizophrenia.
Skeletal anchored maxillary protraction: A systematic review and meta-analysis
Creators: name: Δούλης, Ιωάννης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Τάξη ΙII
Οπισθογναθισμός άνω γνάθου
Μάσκα προσώπου
Πρόσθια έλξη άνω γνάθου
Σκελετική στήριξη
Class III
Retrognathia
Facemask
Maxillary protraction
Skeletal anchorage

description: Facemask (FM) treatment seems to be effective for the treatment of Class III malocclusion, but it is prone to several side-effects, namely anchorage loss, maxillary incisor proclination and mandibular backwards rotation. Skeletal anchored maxillary protraction (SAMP) is reported to eliminate the above side-effects. This systematic review and meta-analysis aims to evaluate the skeletal, dental and soft-tissue treatment effects of SAMP and compare its effectiveness with tooth-anchored FM. Electronic database searches were complemented by hand-searching. Risk of bias was assessed according to study design by the respective Cochrane Collaboration tools. Random effects meta-analysis was followed by subgroup and sensitivity analyses. 23 included studies were identified, none of which yielded high risk of bias. The meta-analysis showed that SAMP is an effective treatment modality with no or minimal side-effects. In comparison to the tooth-anchored FM, maxillary advancement was comparable, but all side-effects were significantly less. SAMP may be the preferred treatment approach of Class III high angle cases or in patients with increased anchorage needs.
description: Η μάσκα προσώπου φαίνεται να είναι αποτελεσματική στην αντιμετώπιση των συγκλεισιακών ανωμαλιών ΙΙΙης Τάξης, αλλά παρουσιάζει πολλές παρενέργειες, π.χ. χειλικές αποκλίσεις των άνω τομέων και οπίσθια στροφή της κάτω γνάθου. Η χρήση της σκελετικής στήριξης ίσως να αντιρροπεί αυτές τις παρενέργειες. Αυτή η συστηματική ανασκόπηση και μετα-ανάλυση στοχεύει στην αξιολόγηση των θεραπευτικών επιδράσεων της σκελετικά στηριζόμενης πρόσθιας έλξης της άνω γνάθου στο σκελετό, τα δόντια και τα μαλακά μόρια, καθώς και στο να συγκρίνει την αποτελεσματικότητά της με την αντίστοιχη της «κλασσικής» μάσκας προσώπου. Έγινε αναζήτηση σε βάσεις δεδομένων αλλά και δια χειρός. Ο κίνδυνος μεροληψίας ελέγχθηκε με τα εργαλεία του Cochrane Collaboration. Πραγματοποιήθηκε μετα-ανάλυση τυχαίων επιδράσεων, ανάλυση υπο-ομάδων και ευαισθησίας. Από τις 23 μελέτες που συμπεριλήφθηκαν, καμία δεν ήταν υψηλού κινδύνου μεροληψίας. Η μετα-ανάλυση έδειξε ότι η σκελετική στήριξη είναι αποτελεσματική και μειώνει τις ανεπιθύμητες ενέργειες της μάσκας προσώπου. Σε σύγκριση με την «κλασσική» μάσκα προσώπου, η προώθηση της άνω γνάθου βρέθηκε να είναι στα ίδια επίπεδα, αλλά όλες οι παρενέργεις ήταν σημαντικά λιγότερες. Η σκελετικά στηριζόμενη πρόσθια έλξη της άνω γνάθου ίσως να είναι η θεραπεία εκλογής σε ασθενείς με Τάξη ΙΙΙ και κατακόρυφο τύπο αύξησης ή σε περιπτώσεις αυξημένης ανάγκης για στήριξη.
The Phase Diagram of a Deep Potential Water Model
Creators: name: Zhang, Linfeng
name: Wang, Han
name: Car, Roberto
name: E, Weinan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Using the Deep Potential methodology, we construct a model that reproduces accurately the potential energy surface of the SCAN approximation of density functional theory for water, from low temperature and pressure to about 2400 K and 50 GPa, excluding the vapor stability region. The computational efficiency of the model makes it possible to predict its phase diagram using molecular dynamics. Satisfactory overall agreement with experimental results is obtained. The fluid phases, molecular and ionic, and all the stable ice polymorphs, ordered and disordered, are predicted correctly, with the exception of ice III and XV that are stable in experiments, but metastable in the model. The evolution of the atomic dynamics upon heating, as ice VII transforms first into ice VII$''$ and then into an ionic fluid, reveals that molecular dissociation and breaking of the ice rules coexist with strong covalent fluctuations, explaining why only partial ionization was inferred in experiments.
Elicitation session: Verb tenses and subject pronouns
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: 8 WAV files, 1 PDF file. PDF file is scan of corresponding pages from Lionnet's field notes (pp. 83-99). See related file bundle for Hyman field notes.
Microwave properties of DyBa_2Cu_3O_(7-x) monodomains and related compounds in magnetic fields
Creators: name: Pompeo, N.
name: Silva, E.
name: Ausloos, M.
name: Cloots, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a microwave characterization of a DyBa$_{2}$Cu$_{3}$O$_{7-x}$ single domain, grown by the top-seeded melt-textured technique. We report the (a,b) plane field-induced surface resistance, $ΔR_s(H)$, at 48.3 GHz, measured by means of a cylindrical metal cavity in the end-wall-replacement configuration. Changes in the cavity quality factor Q against the applied magnetic field yield $ΔR_s(H)$ at fixed temperatures. The temperature range [70 K ; T_c] was explored. The magnetic field $μ_0 H
description: 6 pages, 4 figures, LaTeX, submitted to Journal of Applied Physics
The planar limit of ${\cal N}=2$ chiral correlators
Creators: name: Fiol, Bartomeu
name: Fukelman, Alan Rios
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the planar limit of 2- and 3-point functions of single-trace chiral primary operators of ${\cal N}=2$ SQCD on $S^4$, to all orders in the 't Hooft coupling. In order to do so, we first obtain a combinatorial expression for the planar free energy of a hermitian matrix model with an infinite number of arbitrary single and double trace terms in the potential; this solution might have applications in many other contexts. We then use these results to evaluate the analogous planar correlation functions on ${\mathbb R}^4$. Specifically, we compute all the terms with a single value of the $ζ$ function for a few planar 2- and 3-point functions, and conjecture general formulas for these terms for all 2- and 3-point functions on ${\mathbb R}^4$.
description: 25 pages. v2 : added reference
Dynamical Masses in Luminous Infrared Galaxies
Creators: name: Hinz, Joannah L.
name: Rieke, George H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have studied the dynamics and masses of a sample of ten nearby luminous and ultraluminous infrared galaxies (LIRGS and ULIRGs), using 2.3 micron CO absorption line spectroscopy and near-infrared H- and Ks-band imaging. By combining velocity dispersions derived from the spectroscopy, disk scale-lengths obtained from the imaging, and a set of likely model density profiles, we calculate dynamical masses for each LIRG. For the majority of the sample, it is difficult to reconcile our mass estimates with the large amounts of gas derived from millimeter observations and from a standard conversion between CO emission and H_2 mass. Our results imply that LIRGs do not have huge amounts of molecular gas (10^10-10^11 Msolar) at their centers, and support previous indications that the standard conversion of CO to H_2 probably overestimates the gas masses and cannot be used in these environments. This in turn suggests much more modest levels of extinction in the near-infrared for LIRGs than previously predicted (A_V~10-20 versus A_V~100-1000). The lower gas mass estimates indicated by our observations imply that the star formation efficiency in these systems is very high and is triggered by cloud-cloud collisions, shocks, and winds rather than by gravitational instabilities in circumnuclear gas disks.
description: 14 pages, 2 figures, accepted to ApJ
Additional file 7 of De novo assembly and analysis of the transcriptome of the Dermacentor marginatus genes differentially expressed after blood-feeding and long-term starvation
Creators: name: Hu, Ercha
name: Meng, Yuan
name: Ma, Ying
name: Song, Ruiqi
name: Hu, Zhengxiang
name: Li, Min
name: Hao, Yunwei
name: Fan, Xinli
name: Wei, Liting
name: Fan, Shilong
name: Chen, Songqin
name: Zhai, Xuejie
name: Li, Yongchang
name: Zhang, Wei
name: Zhang, Yang
name: Guo, Qingyong
name: Bayin, Chahan
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 7: Figure S1. Genes differentially expressed between groups after blood-feeding and long-term starvation.
Elicitation session: Verbs and nominal modifiers
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: 10 WAV files, 1 PDF file. PDF file is scan of corresponding pages from Lionnet's field notes (pp. 63-82). See related file bundle for Hyman field notes.
title: Élaboration d’un protocole pour l’application de la ventilation pulmonaire en scanner post-mortem
title: Élaboration d’un protocole pour l’application de la ventilation pulmonaire en scanner post-mortem
titleType: AlternativeTitle
Creators: name: Jeanneret-Grosjean, Carine
name: Tschan, Félicia
Publisher: name: Unknown
Year: 0
Subjects: subject: imagerie forensique
subject: médecine légale
subject: VPMCT
subject: ventilation
subject: angiographie
subject: tomodensitométrie
subject: appareil de ventilation
subject: indications
subject: poumons
subject: hesav TB TRM

description: Peu de centres de médecine légale dans le monde disent utiliser la ventilation pulmonaire lors de leurs investigations. S’ils l’utilisent, ils donnent peu de précisions sur les indications et leur méthodologie. Notre objectif était de réunir le matériel utile à la ventilation et d’élaborer un protocole afin de pouvoir la mettre en pratique. Nous voulions également rechercher les indications possibles tout en réfléchissant aux apports, avantages et limites de la technique. Nous avons réuni le matériel, élaboré un protocole et après de nombreux changements dus notamment à la commission d’éthique, qui a été un tournant de l’étude, nous avons pratiqué la ventilation pulmonaire sur des personnes ayant fait don de leur corps à la science. Ces ventilations ont été pratiquées à l’aide de masque, d’intubation ou de trachéotomie, à des pressions de 20 ou 40mbar, sur 4 cas ayant eu ou non une angiographie post-mortem. Les résultats obtenus présentaient une grande variation selon les cas. Cependant, il est ressorti que le moyen de ventilation le plus efficace tout en étant facile à mettre en place est la trachéotomie. La ventilation a permis d’augmenter les volumes pulmonaires dans la majorité des séries, ainsi que de diminuer les densités pulmonaires moyennes et le ratio cardio-thoracique. Les indications retenues sont surtout les morts naturelles et les traumatismes par balle. En conclusion, la ventilation pulmonaire en scanner post-mortem est faisable selon le protocole élaboré. Elle offre beaucoup de possibilités de recherche et de développement pour la radiologie forensique.
Variational study of the Kitaev-Heisenberg-Gamma model
Creators: name: Zhang, Shang-Shun
name: Halász, Gábor B.
name: Zhu, Wei
name: Batista, Cristian D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We compute the low-energy excitation spectrum and the dynamical spin structure factor of the Kitaev-Heisenberg-Gamma model through a variational approach based on the exact fractionalized excitations of the pure Kitaev honeycomb model. This novel approach reveals the physical reason for the asymmetric stability of the Kitaev spin liquid phases around the ferromagnetic and antiferromagnetic Kitaev limits. Moreover, we demonstrate that the fractionalized excitations form bound states in specific regions of each Kitaev spin liquid phase and that certain phase transitions induced by Heisenberg and Gamma interactions are driven by the condensation of such a bound state. Remarkably, this bound state appears as a sharp mode in the dynamical spin structure factor, while its condensation patterns at the appropriate phase transitions provide a simple explanation for the magnetically ordered phases surrounding each Kitaev spin liquid phase.
description: 20 pages, 11 figures
Variations on Hammersley's interacting particle process
Creators: name: Atalik, Arda
name: Erol, H. S. Melihcan
name: Yıldırım, Gökhan
name: Yilmaz, Mustafa
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 05A05, 05A15, 60C05, 60K35

description: The longest increasing subsequence problem for permutations has been studied extensively in the last fifty years. The interpretation of the longest increasing subsequence as the longest 21-avoiding subsequence in the context of permutation patterns leads to many interesting research directions. We introduce and study the statistical properties of Hammersleytype interacting particle processes related to these generalizations and explore the finer structures of their distributions. We also propose three different interacting particle systems in the plane analogous to the Hammersley process in one dimension and obtain estimates for the asymptotic orders of the mean and variance of the number of particles in the systems.
description: 6 pages, 6 figures, accepted for publication in Discrete Mathematics Letters
Quantum Communication
Creators: name: Gisin, Nicolas
name: Thew, Rob
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum communication, and indeed quantum information in general, has changed the way we think about quantum physics. In 1984 and 1991, the first protocol for quantum cryptography and the first application of quantum non-locality, respectively, attracted a diverse field of researchers in theoretical and experimental physics, mathematics and computer science. Since then we have seen a fundamental shift in how we understand information when it is encoded in quantum systems. We review the current state of research and future directions in this new field of science with special emphasis on quantum key distribution and quantum networks.
description: Submitted version, 8 pg (2 cols) 5 figs
Agile Islands in a Waterfall Environment: Requirements Engineering Challenges and Strategies in Automotive
Creators: name: Kasauli, Rashidah
name: Knauss, Eric
name: Nakatumba-Nabende, Joyce
name: Kanagwa, Benjamin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: [Context & motivation] Driven by the need for faster time-to-market and reduced development lead-time, large-scale systems engineering companies are adopting agile methods in their organizations. This agile transformation is challenging and it is common that adoption starts bottom-up with agile software teams within the context of traditional company structures. [Question/Problem] This creates the challenge of agile teams working within a document-centric and plan-driven (or waterfall) environment. While it may be desirable to take the best of both worlds, it is not clear how that can be achieved especially with respect to managing requirements in large-scale systems. [Principal ideas/Results] This paper presents an exploratory case study at an automotive company, focusing on two departments of a large-scale systems company that is in the process of company-wide agile adoption. [Contribution] We present challenges related to requirements engineering that agile teams face while working within a larger plan-driven context and propose potential strategies to mitigate the challenges. Challenges relate to, e.g., development teams not being aware of the high-level requirement and dealing with flexibility of writing user stories. We found that strategies for overcoming most of these challenges are still lacking and thus call for more research.
description: Peer-reviewed and accepted at EASE2020
Novel magnesium influx pathways in isolated renal thick ascending limb cells
Creators: name: Dai, Long-Jun
Publisher: name: University of British Columbia
Year: 2008

description: This study was performed to identify the specific magnesium influx pathways in single cortical thick ascending limb (cTAL) cells of the loop of Henle. The segment of thick ascending limb of the Henle's loop plays an important role in renal magnesium homeostasis. Up to 50-60% of the filtered magnesium is reabsorbed in this part and various hormones control the balance of magnesium in the same level. Primary cell cultures were prepared from porcine kidneys using a double antibody technique. Intracellular free magnesium concentration ([Me]i) was determined using magnesium fluorescent dye, mag-fura-2 and the measurement of magnesium refill rates (d[Me] jdt) was used as a means to characterize the magnesium pathway in the plasma membrane. Isolated cTAL cells were pretreated with Me-free media for 16-24 hours and d[Me];/dt was tested in magnesium-rich buffer solution. Basal [Me]; was 0.52±0.02 mM (mean ± S.E.) in normal cells and 0.27±0.03mM in magnesium-depleted cells. Cells cultured (16 h) in high magnesium media (5 mM) maintained basal [Me];, 0.48± 0.02 mM, in the normal range. The decrease of [Mg"Ji inMg-depleted cells was associated with a significant increase in net magnesium transport,(control, 0.19±0.03 and low Mg , 0.35 ±0.01 nmol.mg1 protein.minl as assessed by 28Mguptake. [Me], returned to normal basal levels, 0.53±0.07 mM, with a refill rate of 210±25nM.s-i. Me entry was not changed by 5.0 mM Ca" or 2 mM Sr", Cd", Co", nor Ba" but was inhibited by MezLa":-.1Gd"k:Ni"^
Semiclassical corrections to the interaction energy of a hard-sphere Boltzmann gas
Creators: name: Bhaduri, R. K.
name: van Dijk, W.
name: Srivastava, M. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum effects in statistical mechanics are important when the thermal wavelength is of the order of, or greater than, the mean interatomic spacing. This is examined at depth taking the example of a hard-sphere Boltzmann gas. Using the virial expansion for the equation of state, it is shown that the interaction energy of a classical hard-sphere gas is exactly zero. When the (second) virial coefficient of such a gas is obtained quantum mechanically, however, the quantum contribution to the interaction energy is shown to be substantial. The importance of the semiclassical corrections to the interaction energy shows up dramatically in such a system.
description: 9 pages, 3 figures, submitted to Eur. J. Phys
Phases of five-dimensional supersymmetric gauge theories
Creators: name: Santilli, Leonardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Five-dimensional $\mathcal{N}=1$ theories with gauge group $U(N)$, $SU(N)$, $USp(2N)$ and $SO(N)$ are studied at large rank through localization on a large sphere. The phase diagram of theories with fundamental hypermultiplets is universal and characterized by third order phase transitions, with the exception of $U(N)$, that shows both second and third order transitions. The phase diagram of theories with adjoint or (anti-)symmetric hypermultiplets is also determined and found to be universal. Moreover, Wilson loops in fundamental and antisymmetric representations of any rank are analyzed in this limit. Quiver theories are discussed as well. All the results substantiate the $\mathcal{F}$-theorem.
description: ii+56 pages, 20 figures. v2: references added. v3: clarifications and references added, published version
Prozesse um Entstehung und Bearbeitung der Pädagogischen Lesungen in Zeitzeug*innenerinnerungen
Creators: name: Koch, Katja
name: Koebe, Kristina
Publisher: name: Universität Rostock, Arbeitsstelle Pädagogische Lesungen Rostock
Year: 2021
Subjects: subject: 370 Education
subject: 943 General history of Europe Central Europe Germany

description: Im Rahmen des Teilprojekts "Sozialistische Schule zwischen Anspruch und Wirklichkeit" und dessen Beschäftigung mit den Pädagogischen Lesungen als institutionalisierter Form der Erfahrungsweitergabe innerhalb der DDRLehrer*innenschaft (Koch, Koebe, von Brand & Plessow, 2019) wurden über drei Jahre hinweg aktiv Personen gesucht, die vor 1989 in das Produktions- und Distributionsgefüge des Formats eingebunden waren – die sogenannten Zeitzeug*innen. Der nachfolgende Beitrag unterzieht die im Verlauf dieses Arbeitsprozesses entstandenen insgesamt 23 Befragungen von seinerzeit mit den Pädagogischen Lesungen als Autor*innen und/oder Bearbeiter*innen befassten Personen einer vergleichenden Analyse. Im Rahmen dieser lotet er – unter Beachtung der methodischen Begrenzungen einer solchen Quelle – aus, inwieweit sich daraus Generalisierbarkeiten ergeben, die es erlauben, bisherige Erkenntnisse und Forschungen zur Er- und Bearbeitung Pädagogischer Lesungen in der DDR zu bestätigen, zu ergänzen oder zu differenzieren. Hierzu werden die Erinnerungen zu den einzelnen Arbeitsphasen und zu diversen assoziierten Vorgängen (Honorierungen, Reputationsgewinne) weitestmöglich systematisiert und auf dieser Basis herausgearbeitet, dass es in der Tat mehrere Dimensionen der Arbeit mit den Pädagogischen Lesungen gibt, die bislang von keiner anderen Quelle in dieser Form betrachtet oder derartig vertieft wurden.
Transmission area and two-photon correlated imaging
Creators: name: Bai, Yanfeng
name: Han, Shensheng
name: Liu, Honglin
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The relationship between transmission area of an object imaged and the visibility of its image is investigated in a lensless system. We show that the changes of the visibility are quite different when the transmission area is varied by different manners. An increase of the transmission by adding the slit number leads to a decrease of the visibility. While, the change is adverse when the slit width is widened for a given distance between two slits.
description: 10 pages, 4 figures
Breaking the scale invariance of the primordial spectrum or not: the new WMAP data
Creators: name: Palle, Davor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It seems that new WMAP data requires a fit with a primordial spectrum containig small negative tilt index in addition to the featureless Harrison-Zeldovich- Peebles spectrum thus implying a broken scale invariance. We show that the data could be otherwise interpreted by a scale invariant primordial spectrum with the scale non-invariant evolution of density contrast using the Press-Schechter formalism. The estimate of the acceleration parameter, as a source of the inhomogeneity of spacetime, is made by searching for the minima of the deviation measure defined by the Press-Schechter mass functions for this interpretation compared to the assumptions implicit in the WMAP fit.
description: 7 pages, 2 figures, 16 references
Σχολιασμένη μετάφραση στα ελληνικά του ανέκδοτου στην Ελλάδα θεατρικού έργου του Λόρκα, Del Amor
Creators: name: Κουτρούμπα, Χαρίκλεια Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Λόρκα
Θεατρική μετάφραση
Θεατρικό έργο
Lorca
Τheatrical translation
Dramatic play

description: Σκοπός της παρούσας διπλωματικής εργασίας είναι η σχολιασμένη μετάφραση στα ελληνικά του Del amor, ενός από τα πρώιμα θεατρικά έργα του κορυφαίου εκπροσώπου του αβανγκάρντ ρεύματος και του κινήματος του σουρεαλισμού στην Ισπανία Federico García Lorca, το οποίο έγραψε περίπου στα 1919 σε πολύ νεαρή ηλικία. Κατά την διαδικασία της μετάφρασης εντοπίστηκε και καταγράφηκε το μεγαλύτερο μέρος των μεταφραστικών δυσκολιών, που εμφανίζονατι στο κείμενο του ιδιαίτερου αυτού λογοτεχνικού είδους και πραγματοποιήθηκε η ερμηνευτική τεκμηρίωση των τελικών μεταφραστικών επιλογών.
description: The purpose of this thesis is the translation approach of Del amor, one of the earlier work of Federico Garcia Lorca, written approximately in 1919. He was one of the leading figures of the Spanish Avant Gard movement and the spanish surrealism. A large volume of translation difficulties was identified and recorded throughout the translation process of that piece of that particular literary genre. Furthermore, it was possible to interpret validation of the final translation options.
title: Évaluation des doses aux organes en fonction des diaphragmes pour une radiographie thoracique en néonatologie
title: Évaluation des doses aux organes en fonction des diaphragmes pour une radiographie thoracique en néonatologie
titleType: AlternativeTitle
Creators: name: Bosson, Melissa
name: Brozzoni, Killian
Publisher: name: Unknown
Year: 0
Subjects: subject: pédiatrie
subject: radioprotection
subject: radiographie thoracique
subject: néonatologie
subject: dose aux organes
subject: niveaux de référence diagnostiques
subject: diaphragmes
subject: surface d'irradiation
subject: bonnes pratiques
subject: hesav TB TRM

description: Les patients en néonatologie reçoivent fréquemment des radiographies dans le cadre de leur hospitalisation. Cette population de patients est particulièrement radiosensible de par leurs organes en développement et leur longue espérance de vie. Notre travail étudie la relation entre l’ouverture des diaphragmes et la dose aux organes chez un nouveau-né lors de l’acquisition d’une radiographie thoracique. Nous comparons la surface d’irradiation de radiographies avec une guideline définissant les limites inféro-supérieures et latérales que devrait avoir un cliché optimal. Une fois les données et paramètres d’acquisition récoltés, nous avons regroupé les patients selon leur poids, le but étant d’établir des valeurs de référence dosimétriques par catégorie. Nous avons ensuite utilisé un logiciel simulant les doses reçues par les différents organes dans le champ d’irradiation primaire et aux abords afin d’apprécier les augmentations de dose liées à la surface d’exposition. Nos résultats ont démontré que la surface d’irradiation moyenne, réalisée en pratique, était 45% plus grande que celle recommandée par la guideline. Cette différence a engendré une légère augmentation de dose aux organes pour ceux dans le champ primaire (entre 10 et 33% en moyenne) et conséquente pour ceux en bord de champ (entre 179 et 630% en moyenne). En effet, ces derniers se trouvaient alors directement exposés suite à une ouverture des diaphragmes plus importante. Quant aux paramètres d’exposition, la charge et la tension augmentent avec le poids du patient et sont fidèles aux bonnes pratiques. Cependant, la distance a causé problème. Bien que la majorité des radiographies aient été faites à 1 mètre, d’autres ont été réalisées à des distances très restreintes s’abaissant jusqu’à 40 cm. Ceci a donc eu un impact sur le calcul du kerma. Il serait donc utile de mettre à disposition des techniciens en radiologie médicale (TRM) des protocoles mieux définis. Nous avons tout de même réussi à établir, avec nos données récoltées, des valeurs de produit kerma-surface (PKS) de référence permettant de donner une indication de dose adéquate par catégorie de poids. Ces valeurs vont de 1 à 4 mGy*cm2. Nous avons ainsi créé des NRD pour le service de notre étude, qui prend en compte le poids du patient de façon plus spécifique que les NRD suisses actuelles.
Spin-thermal shear coupling in a relativistic fluid
Creators: name: Becattini, F.
name: Buzzegoli, M.
name: Palermo, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Theory (hep-th)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We show that spin polarization of a fermion in a relativistic fluid at local thermodynamic equilibrium can be generated by the symmetric derivative of the four-temperature vector, defined as thermal shear. As a consequence, besides vorticity, acceleration and temperature gradient, also the shear tensor contributes to the polarization of particles in a fluid. This contribution to the spin polarization vector, which is entirely non-dissipative, adds to the well known term proportional to thermal vorticity and may thus have important consequences for the solution of the local polarization puzzles observed in relativistic heavy ion collisions.
description: 10 pages, 1 figure; version accepted for publication in Physics Letters B
Deep Reinforcement Learning for Combinatorial Optimization: Covering Salesman Problems
Creators: name: Li, Kaiwen
name: Zhang, Tao
name: Wang, Rui Wang Yuheng
name: Han, Yi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper introduces a new deep learning approach to approximately solve the Covering Salesman Problem (CSP). In this approach, given the city locations of a CSP as input, a deep neural network model is designed to directly output the solution. It is trained using the deep reinforcement learning without supervision. Specifically, in the model, we apply the Multi-head Attention to capture the structural patterns, and design a dynamic embedding to handle the dynamic patterns of the problem. Once the model is trained, it can generalize to various types of CSP tasks (different sizes and topologies) with no need of re-training. Through controlled experiments, the proposed approach shows desirable time complexity: it runs more than 20 times faster than the traditional heuristic solvers with a tiny gap of optimality. Moreover, it significantly outperforms the current state-of-the-art deep learning approaches for combinatorial optimization in the aspect of both training and inference. In comparison with traditional solvers, this approach is highly desirable for most of the challenging tasks in practice that are usually large-scale and require quick decisions.
An essay in natural modal logic
Creators: name: Apostoli, Peter J.
Publisher: name: University of British Columbia
Year: 2008

description: A generalized inclusion (g.i.) frame consists of a set of points (or "worlds") W and an assignment of a binary relation Rw on W to each point w in W. generalized inclusion frames whose Rw are partial orders are called comparison frames. Conditional logics of various comparative notions, for example, Lewis's V-logic of comparative possibility and utilitarian accounts of conditional obligation, model the dyadic modal operator > on comparison frames according to (what amounts to) the following truth condition: oc>13"holds at w" if every point in the truth set of a bears Rw to some point where holds. In this essay I provide a relational frame theory which embraces both accessibility semantics and g.i. semantics as special cases. This goal is achieved via a philosophically significant generalization of universal strict implication which does not assume accessibility as a primitive. Within this very general setting, I provide the first axiomatization of the dyadic modal logic corresponding to the class of all g.i. frames. Various correspondences between dyadic logics and first order definable subclasses of the class of g.i. frames are established. Finally, some general model constructions are developed which allow uniform completeness proofs for important sublogics of Lewis' V.
Elicitation session: Verbs
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: 12 WAV files, 1 PDF file. Word list based from French 'elever' to 'rappeler.' PDF file is scan of corresponding pages from Lionnet's field notes (pp. 42-61). See related file bundle for Hyman field notes.
O`ZBEKISTONDA TA`LIMNI RAQAMLASHTIRISHGA OID ISLOHOTLAR VA ULARNING NATIJALARI
Creators: name: Boboqulova, Gulmira
Publisher: name: Zenodo
Year: 2024

description: So`nggi yillarda O`zbekiston o`z ta`lim tizimini raqamlashtirish yo`lida transformativ sayohatni boshladi. Ushbu islohotlar ta`lim olish imkoniyatini oshirish, sifatni yaxshilash va talabalarni raqamli asr uchun zarur ko`nikmalar bilan jihozlashga qaratilgan. Ushbu maqolada amalga oshirilgan asosiy tashabbuslar, ularning amalga oshirilishi va ta`lim sohasiga ta`siri o`rganiladi.
On the Nature of Velocity Fields in High z Galaxies
Creators: name: Prochaska, Jason X.
name: Chen, Hsiao-Wen
name: Wolfe, Arthur M.
name: Dessauges-Zavadsky, Miroslava
name: Bloom, Joshua S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We analyze the gas kinematics of damped Lya systems (DLAs) hosting high z gamma-ray bursts (GRBs) and those toward quasars (QSO-DLAs) focusing on threestatistics: (1) dv, the velocity interval encompassing 90% of the totaloptical depth, (2,3) Wsi and Wciv, the rest equivalent widths of the SiII1526 and CIV1548 transitions. The dv distributions of the GRB-DLAs and QSO-DLAs are similar, each has median dv~80km/s and a significant tail to several hundred km/s. This suggests comparable galaxy masses for the parent populations of GRB-DLAs and QSO-DLAs and we infer the average dark matter halo mass of GRB galaxies is 0.5A) than the QSO-DLAs (~ 0.5A) which may suggest galactic-scale outflows contribute to the largest observed velocity fields.
description: 14 pages, 9 figures. Submitted to ApJ
Parabolic integrodifferential identification problems related to radial memory kernels I
Creators: name: Favaron, A.
name: Lorenzi, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35R30 (35K10 35R10 45K05)

description: We are concerned with the problem of recovering the radial kernel $k$, depending also on time, in a parabolic integro-differential equation $$D_{t}u(t,x)={\cal A}u(t,x)+\int_0^t k(t-s,|x|){\cal B}u(s,x)ds +\int_0^t D_{|x|}k(t-s,|x|){\cal C}u(s,x)ds+f(t,x),$$ ${\cal A}$ being a uniformly elliptic second-order linear operator in divergence form. We single out a special class of operators ${\cal A}$ and two pieces of suitable additional information for which the problem of identifying $k$ can be uniquely solved locally in time when the domain under consideration is a spherical corona or an annulus.
description: 36 pages
Saturating Receiver and Receptor Competition in Synaptic DMC: Deterministic and Statistical Signal Models
Creators: name: Lotter, Sebastian
name: Schäfer, Maximilian
name: Zeitler, Johannes
name: Schober, Robert
Publisher: name: arXiv
Year: 2021
Subjects: subject: Emerging Technologies (cs.ET)
subject: Information Theory (cs.IT)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Synaptic communication is based on a biological Molecular Communication (MC) system which may serve as a blueprint for the design of synthetic MC systems. However, the physical modeling of synaptic MC is complicated by the possible saturation of the molecular receiver caused by the competition of neurotransmitters (NTs) for postsynaptic receptors. Receiver saturation renders the system behavior nonlinear in the number of released NTs and is commonly neglected in existing analytical models. Furthermore, due to the ligands' competition for receptors (and vice versa), the individual binding events at the molecular receiver are in general statistically dependent and the binomial model for the statistics of the received signal does not apply. In this work, we propose a novel deterministic model for receptor saturation in terms of a state-space description based on an eigenfunction expansion of Fick's diffusion equation. The presented solution is numerically stable and computationally efficient. Employing the proposed deterministic model, we show that saturation at the molecular receiver reduces the peak-value of the expected received signal and accelerates the clearance of NTs as compared to the case when receptor occupancy is neglected. We further derive a statistical model for the received signal in terms of the hypergeometric distribution which accounts for the competition of NTs for receptors and the competition of receptors for NTs. The proposed statistical model reveals how the signal statistics are shaped by the number of released NTs, the number of receptors, and the binding kinetics of the receptors, respectively, in the presence of competition. We show that the impact of these parameters on the signal variance depends on the relative numbers of NTs and receptors. The accuracy of the proposed deterministic and statistical models is verified by particle-based computer simulations.
description: 16 pages, 9 figures, 1 table. Accepted for publication in IEEE Transactions on NanoBioscience. This article is the extended journal version of the conference paper arXiv:2010.14828
Το πρόβλημα της δρομολόγησης οχημάτων σε μία εταιρεία κατεψυγμένων προϊόντων
Creators: name: Πράπα, Αιμιλία Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2019
Subjects: Πρόβλημα δρομολόγησης οχημάτων
Αλγόριθμος Clarke & Wright
Τεχνικές επίλυσης αλγορίθμου
Vehicle routing problem
Clarke & Wright algorithm
Algorithm’s solution methods

description: Η παρούσα εργασία ασχολείται με ένα αρκετά σημαντικό πρόβλημα που μπορεί να αντιμετωπίζεται σε συγκεκριμένα επαγγέλματα, αλλά αξιοποιείται από όλους τους ανθρώπους, ακόμη και σε καθημερινή βάση. Το Πρόβλημα Δρομολόγησης Οχημάτων μπορεί να μην αφορά πολλούς ανθρώπους άμεσα, αλλά έμμεσα; Κάθε άνθρωπος στέλνει γράμματα, δέματα, ή πηγαίνει στο φούρνο για να αγοράσει κάτι να φάει. Σε ό,τι εμπλέκεται η διανομή, εμπλέκεται και κάποιος αλγόριθμος δρομολόγησης οχημάτων. Υπάρχουν πάρα πολλές παραλλαγές του αλγορίθμου που έχουν δημιουργηθεί από τους διάφορους περιορισμούς που μπορεί να έχει κάθε πρόβλημα και κάθε μία από αυτές στοχεύει στον εντοπισμό της πιο συμφέρουσας διαδρομής, τόσο από κόστος όσο κι από χρόνο, για την πραγματοποίηση ενός δρομολογίου. Στόχος της εργασίας αυτής, είναι η εύρεση των κατάλληλων δρομολογίων μιας μικρής εταιρείας που ασχολείται με τη διανομή κατεψυγμένων τροφίμων. Λόγω αρκετών περιορισμών της εταιρείας, υλοποιήθηκε ένας αλγόριθμος, ο Capacitated Vehicle Routing Problem, για κάθε δρομολόγιο της εταιρείας και για κάθε όχημα. Επίσης, γίνεται αναφορά σε μερικές παραλλαγές του προβλήματος, καθώς και σε μεθόδους επίλυσής του
description: This paper refers to an important issue that may occur in many professions, but can be seen in everyday life of a person, even in a daily base. The Vehicle Routing Problem may not be relevant to many people directly, but indirectly? Each person may send letters, packages or go to the bakery to buy something to eat. As far as the contribution is concerned, there is always an algorithm of vehicle routing included. There are many different approaches to these algorithms that have occurred from many constraints of each problem to be solved and also each one of these constraints aims at locating the best route of distribution, depending on the cost and time, of a route. The aim of this paper, is to find the best routes a small company that deals with distribution of frozen products. Due to the many constraints of the company, the algorithm of Capacitated Vehicle Routing Problem has been used with the method of Clarke & Wright for each route of the company. Moreover, there is a reference to some variants of the problem, as well as to some methods of its solution