cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hyperreal delta functions as a new general tool for modeling physical states with infinitely high densities
Creators: name: Cabbolet, Marcoen J. T. F.
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 33E20

description: This paper introduces the expanded real numbers as an ordered subring of the hyperreal number field that does not contain any infinitesimals, and defines the set of all integrable functions from the real numbers to the expanded real numbers. This allows to identify the Dirac delta with a special hyperreal-valued function of a real variable: the Dirac delta function thus defined is a general tool, applicable for the mathematical modeling of physical systems in which infinitely high densities occur.
description: 6 pages, no figures; preprint differs substantially from published version
Gipfel Loch
Creators: name: Parein, René
name: Club Spéléo Furets Jaunes De Seyssins
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019
Subjects: subject: Géomorphologie

description: Topographie de Gipfel Loch ; Géomorphologie ; Profondeur indiquée : - 840 m
description: Coverage: Europe
description: Coverage: Autriche
description: Provenance: Don de Christophe Gauchon
A newspaper article on the sudden occurrence of Aularches miliaris (coffee locust) swarms at Jhargram, West Bengal, India.
Creators: name: Chakrovorty, Arnob
name: Brahma, Goutam
Publisher: name: figshare
Year: 2021
Subjects: subject: 70205 Animal Protection (Pests and Pathogens)
subject: FOS: Animal and dairy science
subject: 70308 Crop and Pasture Protection (Pests, Diseases and Weeds)
subject: FOS: Agriculture, forestry and fisheries
subject: 70106 Farm Management, Rural Management and Agribusiness
subject: FOS: Other agricultural sciences
subject: 70504 Forestry Management and Environment
subject: 60202 Community Ecology (excl. Invasive Species Ecology)
subject: FOS: Biological sciences
subject: 70505 Forestry Pests, Health and Diseases
subject: 70603 Horticultural Crop Protection (Pests, Diseases and Weeds)

description: The newspaper article covers Arnob Chakrovorty's bite on the sudden occurrence of Aularches miliaris (coffee locust) swarm at Jhargram, West Bengal, India, and a confirmatory record of the species of locust being documented. This report was aimed to appease the public that the documented species was not the plague-causing desert locust ( Schistocerca gregaria) responsible for the locust plague of 2020 in India. Published in Sangbad Pratidin Newspaper (Bengali) issue date-3June2020, pp. 1&5 Cite this article as: Chakrovorty, Arnob, and Goutam Brahma. “A newspaper article on the sudden occurrence of Aularches miliaris (coffee locust) swarms at Jhargram, West Bengal, India..” Sangbad Pratidin, 3 Jun. 2020, pp. 1–5. https://epaper.sangbadpratidin.in/epaper/edition/2380/sangbad-pratidin-03-06-20
Pulsar timing and its applications
Creators: name: Manchester, R N
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Pulsars are remarkably precise "celestial clocks" that can be used to explore many different aspects of physics and astrophysics. In this article I give a brief summary of pulsar properties and describe some of the applications of pulsar timing, including tests of theories of gravitation, efforts to detect low-frequency gravitational waves using pulsar timing arrays and establishment a "pulsar timescale".
description: Presented at Physics of Neutron Stars - 2017. 50 years after, Saint Petersburg, July 2017, J. Physics Conf. Ser., 932, 012002
Soft-Gluon-Pole Contribution in Single Transverse-Spin Asymmetries of Drell-Yan Processes
Creators: name: Ma, J. P.
name: Sang, H. Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We use multi-parton states to examine the leading order collinear factorization of single transverse-spin asymmetries in Drell-Yan processes. Twist-3 operators are involved in the factorization. We find that the so-called soft-gluon-pole contribution in the factorization must exist in order to make the factorization correct. This contribution comes from the corresponding cross-section at one-loop, while the hard-pole contribution in the factorization comes from the cross-section at tree-level. Although the two contributions come from results at different orders, their perturbative coefficient functions in the factorization are at the same order. This is in contrast to factorizations only involving twist-2 operators. The soft-gluon-pole contribution found in this work is in agreement with that derived in a different way. For the hard-pole contributions we find an extra contribution from an extra parton process contributing to the asymmetries. We also solve a part of discrepancy in evolutions of the twist-3 operator. The method presented here for analyzing the factorization can be generalized to other processes and can be easily used for studying factorizations at higher orders, because the involved calculations are of standard scattering amplitudes.
description: typos eliminated. Published in JHEP 1104:062,2011
Conditions for the Formation of First-Star Binaries
Creators: name: Machida, Masahiro N.
name: Omukai, Kazuyuki
name: Matsumoto, Tomoaki
name: Inutsuka, Shu-ichiro
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The fragmentation process of primordial-gas cores during prestellar collapse is studied using three-dimensional nested-grid hydrodynamics. Starting from the initial central number density of n \sim10^3 cm^-3, we follow the evolution of rotating spherical cores up to the stellar density n \simeq 10^{22} cm^-3. An initial condition of the cores is specified by three parameters: the ratios of the rotation and thermal energies to the gravitational energy (β_0, and α_0, respectively), and the amplitude of the bar-mode density perturbation (A_ϕ). Cores with rotation β_0 > 10^{-6} are found to fragment during the collapse. The fragmentation condition hardly depends on either the initial thermal energy α_0 or amplitude of bar-mode perturbation A_ϕ. Since the critical rotation parameter for fragmentation is lower than that expected in the first star formation, binaries or multiples are also common for the first stars.
description: 34 pages,14 figures, Submitted to ApJ, For high resolution figures see http://www2.scphys.kyoto-u.ac.jp/~machidam/darkbinary/astro-ph.pdf
[Letter from Walter Church and Walter C. Teter to Wilson L. Robinson. Together with The first returns from the Yukon]
Creators: name: Church, Walter
name: Teter, Walter C.
name: , Church
Publisher: name: The University of British Columbia
Year: 2024

description: Letter from Walter Church, Mining Engineer and Walter C. Teter, Mining Broker, San Francisco dated Jan. 20, 1896 to Wilson L. Robinson of Canton, NY. Mimeographed sheet seeking men for the mining camps in Alaska Gold Fields. Together with: The First Returns From the Yukon, a four page booklet listing the first men to return from the gold fields of the Yukon, their addresses and the approximate amounts brought out by each in gold dust and nuggets. Compiled by Church & Teter, Mining Engineers and Brokers, Mills Building, San Francisco, California and Juneau, Alaska.
A Possible Detection of the Cosmic Antineutrino Background in the Presence of Flavor Effects
Creators: name: Li, Y. F.
name: Xing, Zhi-zhong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Lusignoli and Vignati have recently pointed out that it is in principle possible to directly detect the cosmic antineutrino background by using the rather stable isotope holmium-163 as a target, which can decay into dysprosium-163 via electron capture (EC) with a very small energy release. In this paper we calculate the rate of the relic antineutrino capture on holmium-163 nuclei against the corresponding EC decay rate by taking account of different neutrino mass hierarchies and reasonable values of theta_13. We show that such flavor effects are appreciable and even important in some cases, and stress that a calorimetric measurement of the cosmic antineutrino background might be feasible in the far future.
description: 13 pages, 5 figures, revised version, accepted for publication in Phys. Lett. B
Automated Classification of Video Capsule EndoscopyAbnormalities Using DINOv2
Creators: name: Avala, Sri Karthik
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 320226
subject: Surgery

description: This project develops a deep learning model utilizing the DINOv2 architecture toautomatically classify abnormalities detected in video capsule endoscopy (VCE) frames.The focus is on ten specific abnormalities, assisting healthcare professionals in diagnosinggastrointestinal disorders efficiently.
Mirkovic-Vilonen cycles and polytopes for a Symmetric pair
Creators: name: Hong, Jiuzu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: Let $G$ be a connected, simply-connected, and almost simple algebraic group, and let $σ$ be a Dynkin automorphism on $G$. In this paper, we get a bijection between the set of $\st$-invariant MV cycles (polytopes) for $G$ and the set of MV cycles (polytopes) for $G^\st$, which is the fixed point subgroup of $G$; moreover, this bijection can be restricted to the set of MV cycles (polytopes) in irreducible representations. As an application, we obtain a new proof of the twining character formula.
description: 12 pages; This is a shortened version
Introduction to the special section: growth following highly stressful life events--current status and future directions.
Creators: name: Park, Crystal L.
name: Helgeson, Vicki
Publisher: name: Carnegie Mellon University
Year: 2006
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Interest in the phenomenon of perceived growth following highly stressful experiences continues to proliferate. Already there is abundant evidence that perceptions of growth are commonly reported, often by the majority of people experiencing even the most traumatic of events. However, much remains to be learned about perceptions of growth. In this article, the authors pose 7 major theoretical and empirical questions regarding perceived growth, including issues of measurement, validity, mechanisms, links with well-being, and clinical implications. The authors summarize the current status of psychologists' knowledge, including articles in the present special section, and conclude that there is much to learn about perceived growth. The authors end with suggestions for future research.
Resonant enhancement of ultracold photoassociation rate by electric field induced anisotropic interaction
Creators: name: Chakraborty, Debashree
name: Hazra, Jisha
name: Deb, Bimalendu
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the effects of a static electric field on the photoassociation of a heteronuclear atom-pair into a polar molecule. The interaction of permanent dipole moment with a static electric field largely affects the ground state continuum wave function of the atom-pair at short separations where photoassociation transitions occur according to Franck-Condon principle. Electric field induced anisotropic interaction between two heteronuclear ground state atoms leads to scattering resonances at some specific electric fields. Near such resonances the amplitude of scattering wave function at short separation increases by several orders of magnitude. As a result, photoaasociation rate is enhanced by several orders of magnitude near the resonances. We discuss in detail electric field modified atom-atom scattering properties and resonances. We calculate photoassociation rate that shows giant enhancement due to electric field tunable anisotropic resonances. We present selected results among which particularly important are the excitations of higher rotational levels in ultracold photoassociation due to electric field tunable resonances.
description: 14 pages,9 figures
A direct measurement of sense of rotation of PSR J0737$-$3039A
Creators: name: Pol, Nihan
name: McLaughlin, Maura
name: Kramer, Michael
name: Stairs, Ingrid
name: Perera, Benetge B. P.
name: Possenti, Andrea
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We apply the algorithm published by Liang et al. (2014) to describe the Double Pulsar system J0737$-$3039 and extract the sense of rotation of first born recycled pulsar PSR J0737$-$3039A. We find that this pulsar is rotating prograde in its orbit. This is the first direct measurement of the sense of rotation of a pulsar with respect to its orbit and a direct confirmation of the rotating lighthouse model for pulsars. This result confirms that the spin angular momentum vector is closely aligned with the orbital angular momentum, suggesting that kick of the supernova producing the second born pulsar J0737$-$3039B was small.
description: Accepted for publication in ApJ
Application of optical single-sideband laser in Raman atom interferometry
Creators: name: Zhu, Lingxiao
name: Lien, Yu-Hung
name: Hinton, Andrew
name: Niggebaum, Alexander
name: Rammeloo, Clemens
name: Bongs, Kai
name: Holynski, Michael
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A frequency doubled I/Q modulator based optical single-sideband (OSSB) laser system is demonstrated for atomic physics research, specifically for atom interferometry where the presence of additional sidebands causes parasitic transitions. The performance of the OSSB technique and the spectrum after second harmonic generation are measured and analyzed. The additional sidebands are removed with better than 20 dB suppression, and the influence of parasitic transitions upon stimulated Raman transitions at varying spatial positions is shown to be removed beneath experimental noise. This technique will facilitate the development of compact atom interferometry based sensors with improved accuracy and reduced complexity.
title: Chain of Memories | Μία διαδραστική αφήγηση με αναφορά στη χωρική μνήμη με την ένταξη ψηφιακών τεχνικών
title: Chain of Memories | An interactive narrative that refers to spatial memory via the implementation of digital media techniques
Creators: name: Μανουδακη Νεφελη
Publisher: name: Technical University of Crete
Year: 2021

description: Η παρούσα εργασία στοχεύει στην αναβίωση ενός τόπου μνήμης, δημιουργώντας ατμόσφαιρες που σε “ταξιδεύουν” στο χρόνο μέσω της αναβίωσης ενός σημαντικού κομματιού της ιστορίας του κτιρίου. Για τη δημιουργία αυτής της εγκατάστασης χρησιμοποιήθηκαν τεχνικές συστημάτων καταγραφής με συστήματα απεικόνισης,όπως η Φωτογραμμετρία, για την ακριβή αποτύπωση του χώρου και των υλικών. Η βιωματική εμπειρία έχει σχεδιαστεί και επεξεργαστεί σε περιβάλλον μηχανής γραφικών και η υλοποίηση της θα απεικονιστεί με τεχνικές projection mapping σε μακέτα υπο κλίμακα από συγκεκριμένο σημείο της εγκατάστασης και σε περιβάλλον εικονικής πραγματικότητας με την περιήγηση του χρήστη σε όλη τη σχεδιασμένη εμπειρία. Μία εμπειρία στο χώρο με οπτική αφήγηση, ήχο και διάδραση. Σκοπός είναι να ενισχυθεί ο χαρακτήρας και η υπάρχων ατμόσφαιρα του τόπου μνήμης , αναδεικνύοντας ιστορικά και χωρικά στοιχεία που έχουν χαθεί με το πέρασμα του χρόνου. Οι σύγχρονες τέχνες και πρακτικές αποτελούν μέσο για τη δημιουργία ολιστικών εμπειριών για την ενίσχυση της συλλογικής μνήμης και την ανάδειξη του χαρακτήρα του τόπου.
Konferenzmetadaten als Basis für szientometrische Indikatoren
Creators: name: Altemeier, Franziska
Publisher: name: Zenodo
Year: 2019
Subjects: vivode19

description: Wissenschaft in Zeiten der Vielfalt an evaluierbaren Daten zu bewerten, stellt eine Herausforderung für alle Akteure dar. Neben klassischen Publikationen sind auch Konferenzen ein Teil des Wissenschaftsprozesses und haben für insbesondere für die Disziplinen Informatik und Ingenieurswissenschaften sowie für die Gesellschaft insgesamt eine hohe Relevanz. Szientometrische Indikatoren können Konferenzen und die Teilnahme an solchen bewertbar zu machen. In diesem Vortrag werden die Ergebnisse eines Vergleichs verschiedener Konferenzmetadatenschemata vor diesem Hintergrund vorgenommen.
IDENTIFYING INFLUENTIAL FACTORS ON BANK CREDIT RISK IN TUNISIA
Creators: name: Salah, Fatima Ahmed Ben
name: El-Mansouri, Mohamed Ali
Publisher: name: ZAP journals
Year: 2024
Subjects: Tunisian banking sector, Regulatory reforms, Central Bank of Tunisia, Market orientation, Financial stability

description: In recent years, the Tunisian banking sector has undergone significant transformations, transitioning towards a more market-oriented, competitive, and attractive landscape for foreign investors. Concurrently, the sector has embraced new technologies of information and communication, further reshaping its operational framework. In response to this evolving environment and to mitigate potential risks and fragilities, the Central Bank of Tunisia has implemented mandatory reforms aimed at enhancing stability and resilience within the banking sector.

This study aims to examine the impact of these restrictive reforms mandated by the Central Bank of Tunisia on the banking sector. Through a comprehensive analysis of regulatory measures and their implications, the study seeks to elucidate the effectiveness of these reforms in safeguarding the stability and competitiveness of the Tunisian banking industry. By assessing the extent to which banks have complied with these reforms and evaluating their outcomes, this research contributes to a deeper understanding of the dynamics shaping the Tunisian banking landscape.

Using empirical data and regulatory assessments, the study explores the drivers and consequences of regulatory reforms in the Tunisian banking sector. Key factors influencing compliance with these reforms and their impact on market orientation, competitiveness, and attractiveness for foreign investors are examined, providing insights into the efficacy of regulatory interventions in fostering a resilient banking environment.

The findings of this study have implications for policymakers, regulators, and stakeholders within the Tunisian banking sector. By identifying strengths and weaknesses in regulatory frameworks and compliance mechanisms, stakeholders can formulate strategies to enhance the sector's stability, competitiveness, and attractiveness for investment.
Frobenius Degenerations of Preprojective Algebras
Creators: name: Kaplan, Daniel
Publisher: name: arXiv
Year: 2018
Subjects: subject: Rings and Algebras (math.RA)
subject: Representation Theory (math.RT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 16G20, 16P10, 16S38, 53D20, 05E15

description: In this paper, we study a preprojective algebra for quivers decorated with $k$-algebras and bimodules, which generalizes work of Gabriel for ordinary quivers, work of Dlab and Ringel for $k$-species, and recent work of de Thanhoffer de Völcsey and Presotto, which has recently appeared from a different perspective in work of Külshammer. As for undecorated quivers, we show that its moduli space of representations recovers the Hamiltonian reduction of the cotangent bundle over the space of representations of the decorated quiver. These algebras yield degenerations of ordinary preprojective algebras, by folding the quiver and then degenerating the decorations. We prove that these degenerations are flat in the Dynkin case, and conjecture, based on computer results, that this extends to arbitrary decorated quivers.
description: 55 pages, to appear in the Journal of Noncommutative Geometry, exposition clarified and minor errors fixed as part of the author's thesis corrections
Monotonicity of the dynamical activity
Creators: name: Maes, Christian
name: Netocny, Karel
name: Wynants, Bram
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences
subject: 82C05, 60F10

description: The Donsker-Varadhan rate function for occupation-time fluctuations has been seen numerically to exhibit monotone return to stationary nonequilibrium [Phys. Rev. Lett. 107, 010601 (2011)]. That rate function is related to dynamical activity and, except under detailed balance, it does not derive from the relative entropy for which the monotonicity in time is well understood. We give a rigorous argument that the Donsker-Varadhan function is indeed monotone under the Markov evolution at large enough times with respect to the relaxation time, provided that a "normal linear-response" condition is satisfied.
description: 19 pages, 1 figure; v3: Section I extended, 3 references added
Interventions to enhance physical and psychological functioning among younger women who are ending nonhormonal adjuvant treatment for early-stage breast cancer
Creators: name: M F Scheier
name: V S Helgeson
name: R  Schulz
name: S  Colvin
name: S  Berga
name: M W Bridges
name: J  Knapp
name: K  Gerszten
name: W S Pappert
Publisher: name: Carnegie Mellon University
Year: 2005
Subjects: subject: 170199 Psychology not elsewhere classified
subject: FOS: Psychology

description: Purpose To conduct a clinical trial to determine if an educational intervention and a nutritional intervention could enhance physical and psychological functioning among younger women completing treatment for early-stage breast cancer. Patients and Methods Younger women (50 years of age or younger, N = 252), within 2 months of having completed active nonhormonal adjuvant therapy, diagnosed with stage 0, I, or II breast cancer with 10 or fewer positive lymph nodes were randomly assigned to a three-arm clinical trial. Women in the control arm of the trial received standard medical care. Women in the two active arms received either an educational intervention, designed to provide information about their illness and enhance adjustment, or a nutritional intervention, designed to promote a more healthy diet. Primary end points included mental functioning, physical functioning, and depressive symptoms. Women were assessed before random assignment, 4 months later (immediately postintervention), and 13 months later (9 months postintervention). Results Participants assigned to the two active treatment arms had significantly less depressive symptomatology and better physical functioning by 13-month follow-up (differences between the two active arms were nonsignificant). These effects were primarily accounted for by changes in intrusive thoughts, concerns regarding cancer recurrence and mortality, self-concept perceptions, and self-efficacy expectations. Conclusion Tailored psychosocial interventions can be effectively designed to enhance adjustment among younger women who are completing nonhormonal adjuvant therapy. (c) 2005 by American Society of Clinical Oncology.
Ultra-fast detector for wide range spectral measurements
Creators: name: Caselle, Michele
name: Bründermann, Erik
name: Duesterer, Stefan
name: Funkner, Stefan
name: Gerth, Christopher
name: Haack, Daniel
name: Kopmann, Andreas
name: Patil, Meghana
name: Makowski, Dariusz
name: Mielczarek, Aleksander
name: Nasse, Michael
name: Niehues, Gudrun
name: Rota, Lorenzo
name: Steffen, Bernd
name: Wang, Weijia
name: Balzer, Matthias
name: Weber, Marc
name: Mueller, Anke-Susanne
name: Bielawski, Serge
Publisher: name: Society of Photo-optical Instrumentation Engineers (SPIE)
Year: 2019
Subjects: line array detector
microstrip detector
soft X-ray spectrometer
ultra-fast imaging
high data throughput readout
machine learning for photon science
artificial intelligent

description: KALYPSO is a novel detector operating at line rates above 10 Mfps. The detector board holds a silicon or InGaAs linear array sensor with spectral sensitivity ranging from 400 nm to 2600 nm. The sensor is connected to a cutting-edge, custom designed, ASIC readout chip which is responsible for the remarkable frame rate. The FPGA readout architecture enables continuous data acquisition and processing in real time. This detector is currently employed in many synchrotron facilities for beam diagnostics and for the characterization of self-built Ytterbium-doped fiber laser emitting around 1050 nm with a bandwidth of 40 nm.
Path-integral simulation of graphene monolayers under tensile stress
Creators: name: Herrero, Carlos P.
name: Ramirez, Rafael
Publisher: name: arXiv
Year: 2017
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Finite-temperature properties of graphene monolayers under tensile stress have been studied by path-integral molecular dynamics (PIMD) simulations. This method allows one to consider the quantization of vibrational modes in these crystalline membranes and to analyze the influence of anharmonic effects in the membrane properties. Quantum nuclear effects turn out to be appreciable in structural and thermodynamic properties of graphene at low temperature, and they can even be noticeable at room temperature. Such quantum effects become more relevant as the applied stress is increased, mainly for properties related to out-of-plane atomic vibrations. The relevance of quantum dynamics in the out-of-plane motion depends on the system size, and is enhanced by tensile stress. For applied tensile stresses, we analyze the contribution of the elastic energy to the internal energy of graphene. Results of PIMD simulations are compared with calculations based on a harmonic approximation for the vibrational modes of the graphene lattice. This approximation describes rather well the structural properties of graphene, provided that the frequencies of ZA (flexural) acoustic modes in the transverse direction include a pressure-dependent correction.
description: 13 pages, 10 figures
[Letter from F. J. Konkel to Eagel Mills regarding the route to and cost of outfitting for the Klondike]
Creators: name: Konkel, F. J.
Publisher: name: The University of British Columbia
Year: 2024

description: Letter asking for information regarding the overland route to the Yukon from Ashcroft and the cost of a mining outfit. An embossed seal is in the upper left corner.
Staying positive: going beyond Lindblad with perturbative master equations
Creators: name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The perturbative master equation (Bloch-Redfield) is extensively used to study dissipative quantum mechanics - particularly for qubits - despite the 25 year old criticism that it violates positivity (generating negative probabilities). We take an arbitrary system coupled to an environment containing many degrees-of-freedom, and cast its perturbative master equation (derived from a perturbative treatment of Nakajima-Zwanzig or Schoeller-Schon equations) in the form of a Lindblad master equation. We find that the equation's parameters are time-dependent. This time-dependence is rarely accounted for, and invalidates Lindblad's dynamical semigroup analysis. We analyze one such Bloch-Redfield master equation (for a two-level system coupled to an environment with a short but non-vanishing memory time), which apparently violates positivity. We show analytically that, once the time-dependence of the parameters is accounted for, positivity is preserved.
description: 19 pages (4 figs). Extended discussion of earlier works. Appendix reviews derivation of Bloch-Redfield equation
Two-photon production of dilepton pairs in peripheral heavy ion collisions
Creators: name: Klein, Spencer R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The STAR collaboration has observed an excess production of $e^+e^-$ pairs in relativistic heavy ion collisions, over the expectations from hadronic production models. The excess pairs have transverse momenta $p_T < 150\ {\rm MeV}/c$ and are most prominent in peripheral gold-gold and uranium-uranium collisions. The pairs exhibit a peak at the $J/ψ$ mass, but include a wide continuum, with pair invariant masses from 400 MeV/c$^2$ up to 2.6 GeV/c$^2$. The ALICE Collaboration observes a similar excess in peripheral lead-lead collisions, but only at the $J/ψ$ mass, without a corresponding continuum. This paper presents a calculation of the cross-section and kinematic for two-photon production of $e^+e^-$ pairs, and find general agreement with the STAR data. The calculation is based on the STARlight simulation code, which is based on the Weizsäcker-Williams virtual photon approach. The STAR continuum observations are compatible with two-photon production of $e^+e^-$ pairs. The ALICE analysis required individual muon $p_T$ be greater than 1 GeV/c; this eliminated almost all of the pairs from two-photon interactions, while leaving most of the $J/ψ$ decays.
description: 5 pages, 4 figures
Stability analysis of an autonomous system in loop quantum cosmology
Creators: name: Xiao, Kui
name: Zhu, Jian-Yang
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss the stability properties of an autonomous system in loop quantum cosmology. The system is described by a self-interacting scalar field $ϕ$ with positive potential $V$, coupled with a barotropic fluid in the Universe. With $Γ=VV"/V'^2$ considered as a function of $λ=V'/V$, the autonomous system is extended from three dimensions to four dimensions. We find that the dynamic behaviors of a subset, not all, of the fixed points are independent of the form of the potential. Considering the higher-order derivatives of the potential, we get an infinite-dimensional autonomous system which can describe the dynamical behavior of the scalar field with more general potential. We find that there is just one scalar-field-dominated scaling solution in the loop quantum cosmology scenario.
description: 9 pages
President Caso address
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2015
Subjects: subject: Ethics
subject: Social sciences
subject: FOS: Social sciences
subject: History

description: Possiamo dare un contributo tangibile alla scienza aperta e per questo vogliamo dedicare attenzione ai giovani. Vogliamo essere in ascolto dei giovani, perché dai giovani viene la forza, la passione, l’entusiasmo, l’energia, le idee per cambiare, per migliorare. Serve un “risveglio della forza” etica della scienza.
Proteomic characterization of yeast secretion mutants
Creators: name: Edmilao, Camile Dominique Castillo
Publisher: name: Macquarie University
Year: 2024
Subjects: classificationCode: 310109
subject: Proteomics and intermolecular interactions (excl. medical proteomics)

description: Saccharomyces cerevisiae is a popular yeast expression system for recombinant protein production for its utility and profitability to grow. However, it can be plagued with low functional yields compared to other higher complexity eukaryotic host systems and often requires further optimization. A less explored strategy is to modify the organization of subcellular organelles, with the endoplasmic reticulum (ER) being a good target for investigation due to its critical role in protein secretion. This study aims to assess changes in relative secretion capacity and then further characterize the proteomic profile of five yeast mutant cell lines that have unique ER morphologies. A label-free DIA-MS quantitative proteomics approach led to a maximum identification of 3195 proteins from 30677 precursors obtained. Two mutants performed over 50% better than the control strain in relative secretion capacity through an O-nitrophenyl-beta-D-galactopyranoside assay. Differential protein abundance analysis showed there were seven common significant proteins across mutants relating to metabolic pathways of energy production and membrane stress. These results led to the conclusion that a balance between increased demand for protein translation must be met with adjustments to supply energy for an ER mutant strain to successfully achieve both a stable ER morphology and up-regulated protein secretion.
Prevalence Of Thyroid Dysfunction In Clinically Diagnosed Down Syndrome Subjects
Creators: name: Malik Muhammad Qasim , Javed Anver Qurreshi, Muhammad Sikander Ghayas Khan, Saima Mansoor Bugvi, Qasima Agha
Publisher: name: Zenodo
Year: 2024
Subjects: Down Syndrome, Thyroid Dysfunction, Euthyroidism, Hypothyroidism, Hyperthyroidism, Sick Thyroid Syndrome

description: Objective-To Determine the Prevalence of Thyroid dysfunction in clinically Diagnosed Down syndrome (DS) Subjects

Methods- Cross sectional study was carried out at University of Lahore, Biochemistry Department to find out the Prevalence of Thyroid dysfunction in 50 clinically diagnosed Down syndrome subjects aged 4 months to 8 years of children visiting Pediatrics clinics of children hospital Lahore Pakistan from September 2018 to May 2019 by measuring thyroid function test (T3, T4, TSH),antithyroid antibodies(ATA) and karyotyping. The procedure was well tolerated by most of DS subjects and minimal inconvenience to their parents.

Results- To obtain better results, total 50 DS children were included in the study and found majority of the children were Males 33(66.0%) while 17(34.0%) were Female. Thyroid dysfunction was found in 27(54%) of DS subjects, of whom 13(26.0%) had Hypothyroidism, 08(16.0%) were having Subclinical hypothyroidism, 01(2.0%) had Sick thyroid syndrome, 4(8.0%) were Hyperthyroidism and 01(2.0%) were Subclinical hyperthyroidism. ATA was positive in 07(14.0%) patients of DS, of whom 02(28%) were Male and 05 were Female (72%), 03 had Hypothyroidim, 02 had Hyperthyroidism, 02 had Subclinical hypothyroidism. Remaining 23(46.0%) were having Euthyroidism.

Conclusion-Researcher found a high Prevalence of Thyroid dysfunction in clinically diagnosed Down syndrome subjects.
Functional Integrals in Affine Quantum Gravity
Creators: name: Klauder, John R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A sketch of a recent approach to quantum gravity is presented which involves several unconventional aspects. The basic ingredients include: (1) Affine kinematical variables; (2) Affine coherent states; (3) Projection operator approach for quantum constraints; (4) Continuous-time regularized functional integral representation without/with constraints; and (5) Hard core picture of nonrenormalizability. Emphasis is given to the functional integral expressions.
description: 10 pages, conference proceedings
Factors Affecting Public Attitudes Towards Revenge Crime
Creators: name: Nicholls, Julie
Publisher: name: figshare
Year: 2018
Subjects: subject: Personality, Social and Criminal Psychology
subject: 170113 Social and Community Psychology
subject: FOS: Psychology
subject: Applied Psychology

description: This Master's thesis investigated the effects factors such as the gender, age and socioeconomic status of the defendant have on the sentence given. All cases used are fictional, and were created to identify what the outcome would be if participants had been a juror on that case.
The quantum effect on Friedmann equation in FRW universe
Creators: name: Zhang, Wei
name: Kuang, Xiao-Mei
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the modified Friedmann equation in the Friedmann-Robertson-Walker universe with quantum effect. Our modified results mainly stem from the new entropy-area relation and the novel idea of T. Padmanabhan, who considers the cosmic space to be emerged from the cosmic time progresses, so that the expansion rate of the universe is determined by the difference of degrees of freedom between the holographic surface and the bulk inside. We also discuss the possibility of having bounce cosmological solution from the modified Friedmann equation in spatially flat geometry.
description: 10 pages
Additional file 2 of Assessing the fidelity of a peer-led chronic pain management program (PAP)
Creators: name: Tse, Mimi M. Y.
name: Tang, Shuk Kwan
name: Ng, Shamay
name: Li, Yajie
name: Cheung, Daphne Sze Ki
name: Kwan, Rick Yiu Cho
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: Science Policy

description: Additional file 2. Instruction for the semi-structured interview.
Non-equilibrium electron relaxation in Graphene
Creators: name: Rani, Luxmi
name: Bhalla, Pankaj
name: Singh, Navinder
Publisher: name: arXiv
Year: 2018
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We apply the powerful method of memory function formalism to investigate non-equilibrium electron relaxation in graphene. Within the premises of Two Temperature Model (TTM), explicit expressions of the imaginary part of the Memory Function or generalized Drude scattering rate ($1/τ$) are obtained. In the DC limit and in equilibrium case where electron temperature ($T_e$) is equal to phonon temperature (T), we reproduce the known results (i.e. $ 1/τ\propto T^4$ when $T<>Θ_{BG}$, where $ Θ_{BG}$ is the Bloch-Grüneisen temperature). We report several new results for $1/ τ$ where $T \neq T_e$ relevant in pump-probe spectroscopic experiments. In the finite frequency regime, we find that $1/τ\propto ω^2$ when $ω<>ω_{BG}$ it is $ω$ independent and also electron temperature independent. These results can be verified in a typical pump-probe experimental setting for graphene.
description: 5 figures and 2 Tables
Dark Energy and Dark Gravity
Creators: name: Durrer, Ruth
name: Maartens, Roy
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations provide increasingly strong evidence that the universe is accelerating. This revolutionary advance in cosmological observations confronts theoretical cosmology with a tremendous challenge, which it has so far failed to meet. Explanations of cosmic acceleration within the framework of general relativity are plagued by difficulties. General relativistic models are nearly all based on a dark energy field with fine-tuned, unnatural properties. There is a great variety of models, but all share one feature in common -- an inability to account for the gravitational properties of the vacuum energy. Speculative ideas from string theory may hold some promise, but it is fair to say that no convincing model has yet been proposed. An alternative to dark energy is that gravity itself may behave differently from general relativity on the largest scales, in such a way as to produce acceleration. The alternative approach of modified gravity (or dark gravity) provides a new angle on the problem, but also faces serious difficulties, including in all known cases severe fine-tuning and the problem of explaining why the vacuum energy does not gravitate. The lack of an adequate theoretical framework for the late-time acceleration of the universe represents a deep crisis for theory -- but also an exciting challenge for theorists. It seems likely that an entirely new paradigm is required to resolve this crisis.
description: 21 pages 10 figures Overview article for the dark energy issue of GRG revised to match version in print (minor typos corrected 4 refs. added)
Post-buckling behaviour of a growing elastic rod
Creators: name: Almet, Axel A.
name: Byrne, Helen M.
name: Maini, Philip K.
name: Moulton, Derek E.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences
subject: 74L15 (primary), 74K10 (secondary)

description: We consider mechanically-induced pattern formation within the framework of a growing, planar, elastic rod attached to an elastic foundation. Through a combination of weakly nonlinear analysis and numerical methods, we identify how the shape and type of buckling (super- or subcritical) depend on material parameters, and a complex phase-space of transition from super-to subcritical is uncovered. We then examine the effect of heterogeneity on buckling and post-buckling behaviour, in the context of a heterogeneous substrate adhesion, elastic stiffness, or growth. We show how the same functional form of heterogeneity in different properties is manifest in a vastly differing post-buckled shape. A form of inverse problem is then considered: whether different functional forms could produce the same shape, and if this could be detected. Finally, a fourth form of heterogeneity, an imperfect foundation, is incorporated and shown to have a more dramatic impact on the buckling instability, a difference that can be qualitatively understood via the weakly nonlinear analysis.
description: 38 pages, 11 figures
Possibility of narrow resonances in nucleon-nucleon channels
Creators: name: Krivoruchenko, M. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Compound states manifest themselves as bound states, resonances, or primitives, and their character is determined by their interaction with the continuum. If the interaction experiences a perturbation, a compound state can change its manifestation. Phase analysis of nucleon-nucleon scattering indicates the existence of primitives in the 3S1, 1S0, and 3P0 channels. Electromagnetic interaction can shift primitives from the unitary cut, turning them into narrow resonances. We evaluate this effect on the 1S0 proton-proton scattering channel within the framework of the Simonov-Dyson model. We show that electromagnetic interaction turns a primitve with a mass of 2000 MeV into a dibaryon resonance of approximately the same mass and a width of 260 keV. Narrow resonances of a similar nature may occur in other nucleon-nucleon channels. Experimental confirmation of the existence of narrow resonances would have important implications for the theory of nucleon-nucleon interaction.
description: 6 pages REVTeX, 2 eps figures; version to appear in PRC
Separability of Dirac equation in higher dimensional Kerr-NUT-de Sitter spacetime
Creators: name: Oota, Takeshi
name: Yasui, Yukinori
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that the Dirac equations in general higher dimensional Kerr-NUT-de Sitter spacetimes are separated into ordinary differential equations.
description: 8 pages, LaTeX, no figure, v2: few comments added, references added, typos corrected, published version
Additional file 9: of Expression of ID4 protein in breast cancer cells induces reprogramming of tumour-associated macrophages
Creators: name: Donzelli, Sara
name: Milano, Elisa
name: Pruszko, Magdalena
name: Sacconi, Andrea
name: Masciarelli, Silvia
name: Iosue, Ilaria
name: Melucci, Elisa
name: Gallo, Enzo
name: Terrenato, Irene
name: Mottolese, Marcella
name: Zylicz, Maciej
name: Zylicz, Alicja
name: Fazi, Francesco
name: Blandino, Giovanni
name: Fontemaggi, Giulia
Publisher: name: figshare
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Developmental Biology
subject: Cancer
subject: Hematology
subject: Computational Biology

description: Figure S6 Differentiated U937 cells transfected with an empty vector (EV) or a granulin (GRN) expression vector and subsequently cultivated in the presence of CM from MDA-MB-468 cells were evaluated for their differentiation state (percentage of CD11b+ cells) (a) and for their viability (b) by, respectively, FACS analysis and ATPlite assay at the indicated time points after CM addition. c Overexpression of GRN evaluated by Western blotting. (PDF 141 kb)
Additional file 3 of The plasma exosomal miR-1180-3p serves as a novel potential diagnostic marker for cutaneous melanoma
Creators: name: Guo, Yeye
name: Zhang, Xu
name: Wang, Linconghua
name: Li, Min
name: Shen, Minxue
name: Zhou, Zhe
name: Zhu, Susi
name: Li, Keke
name: Fang, Zhiqin
name: Yan, Bei
name: Zhao, Shuang
name: Su, Juan
name: Chen, Xiang
name: Peng, Cong
Publisher: name: figshare
Year: 2021
Subjects: subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 3: Figure S3. ST3GAL4 is specifically highly expressed in melanoma. (A) ST3GAL4 is specifically highly expressed in melanoma. The expression profile of ST3GAL4 in different cancers was analyzed by GEPIA. ST3GAL4 is overexpressed in SKCM, LAML and PAAD, while down-regulated in DLBC, ESCA, KIRP, OV, TGCT and THYM. (B) The expression level of ST3GAL4 in melanoma is significantly higher than that in other cancers. Comparison of ST3GAL4 expression in different cancers was analyzed in ProteinAtlas as described in Methods.
Agent Based Distributed Control of Islanded Microgrid - Real-Time Cyber-Physical Implementation
Creators: name: Nguyen, Tung Lam
name: Tran, Quoc-Tuan
name: Caire, Raphael
name: Gavriluta, Catalin
name: Nguyen, Van Hoa
Publisher: name: arXiv
Year: 2017
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In the hierarchical control of an islanded microgrid, secondary control could be centralized or distributed. The former control strategy has several disadvantages, such as single point of failure at the level of the central controller as well as high investment of communication infrastructure. In this paper a three-layer architecture of distributed control is given, including the device layer, the control layer as well as the agent layer. The agent layer is a multi-agent system in which each agent is in charge of a distributed generation unit. Due to communication network constraints, agents are connected only to nearby neighbors. However, by using consensus algorithms the agents can discover the required global information and compute new references for the control layer. The proposed control system is tested on a microgrid scenario which includes paralleled inverter sources. For this, the system is implemented on a real-time cyber-physical test platform that combines real-time simulation models running in OPAL-RT with a network of ARM-based computers, representing the agents.