cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Ligand-Receptor Interactions
Creators: name: Bongrand, Pierre
Publisher: name: arXiv
Year: 2008
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: The formation and dissociation of specific noncovalent interactions between a variety of macromolecules play a crucial role in the function of biological systems. During the last few years, three main lines of research led to a dramatic improvement of our understanding of these important phenomena. First, combination of genetic engineering and X ray cristallography made available a simultaneous knowledg of the precise structure and affinity of series or related ligand-receptor systems differing by a few well-defined atoms. Second, improvement of computer power and simulation techniques allowed extended exploration of the interaction of realistic macromolecules. Third, simultaneous development of a variety of techniques based on atomic force microscopy, hydrodynamic flow, biomembrane probes, optical tweezers, magnetic fields or flexible transducers yielded direct experimental information of the behavior of single ligand receptor bonds. At the same time, investigation of well defined cellular models raised the interest of biologists to the kinetic and mechanical properties of cell membrane receptors. The aim of this review is to give a description of these advances that benefitted from a largely multidisciplinar approach.
Path integral action in the generalized uncertainty principle framework
Creators: name: Bhattacharyya, Sukanta
name: Gangopadhyay, Sunandan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Various gedanken experiments of quantum gravity phenomenology in search of a complete theory of gravity near the Planck scale indicate a modification of the Heisenberg uncertainty principle to the generalized uncertainty principle (GUP). This modification leads to nontrivial contributions on the Hamiltonian of a nonrelativistic particle moving in an arbitrary potential. In this paper we study the path integral representation of a particle moving in an arbitrary potential using the most general form of the GUP containing both the linear and quadratic contributions in momentum. First we work out the action of the particle in an arbitrary potential and hence find an upper bound to the velocity of a free particle. This upper bound interestingly imposes restrictions on the relation between the GUP parameters $α$ and $β$. Analysis shows that $ β> 4 α^2$. We then deduce the mathematical expressions of classical action and the quantum fluctuations for both free particle and the harmonic oscillator systems.
description: 12 pages Latex, comments are welcome
Two-field cosmological models and large-scale cosmic magnetic fields
Creators: name: Andrianov, A. A.
name: Cannata, F.
name: Kamenshchik, A. Yu.
name: Regoli, D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider two different toy cosmological models based on two fields (one normal scalar and one phantom) realizing the same evolution of the Bang-to-Rip type. One of the fields (pseudoscalar) interacts with the magnetic field breaking the conformal invariance of the latter. The effects of the amplification of cosmic magnetic fields are studied and it is shown that the presence of such effects can discriminate between different cosmological models realizing the same global evolution of the universe.
description: 12 pages, 3 figures
Fermionic contributions to the three-loop static potential
Creators: name: Smirnov, Alexander V.
name: Smirnov, Vladimir A.
name: Steinhauser, Matthias
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the three-loop corrections to the static potential which are induced by a closed fermion loop. For the reduction of the occurring integrals a combination of the Gröbner and Laporta algorithm has been used and the evaluation of the master integrals has been performed with the help of the Mellin-Barnes technique. The fermionic three-loop corrections amount to 2% of the tree-level result for top quarks, 8% for bottom quarks and 27% for the charm quark system.
description: 12 pages, 3 figures, to appear in Phys. Lett. B
Smart detectors for Monte Carlo radiative transfer
Creators: name: Baes, Maarten
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Many optimization techniques have been invented to reduce the noise that is inherent in Monte Carlo radiative transfer simulations. As the typical detectors used in Monte Carlo simulations do not take into account all the information contained in the impacting photon packages, there is still room to optimize this detection process and the corresponding estimate of the surface brightness distributions. We want to investigate how all the information contained in the distribution of impacting photon packages can be optimally used to decrease the noise in the surface brightness distributions and hence to increase the efficiency of Monte Carlo radiative transfer simulations. We demonstrate that the estimate of the surface brightness distribution in a Monte Carlo radiative transfer simulation is similar to the estimate of the density distribution in an SPH simulation. Based on this similarity, a recipe is constructed for smart detectors that take full advantage of the exact location of the impact of the photon packages. Several types of smart detectors, each corresponding to a different smoothing kernel, are presented. We show that smart detectors, while preserving the same effective resolution, reduce the noise in the surface brightness distributions compared to the classical detectors. The most efficient smart detector realizes a noise reduction of about 10%, which corresponds to a reduction of the required number of photon packages (i.e. a reduction of the simulation run time) of 20%. As the practical implementation of the smart detectors is straightforward and the additional computational cost is completely negligible, we recommend the use of smart detectors in Monte Carlo radiative transfer simulations.
description: 7 pages, 5 figures, accepted for publication in MNRAS
Study of ($^6$Li, $d$) and ($^6$Li, $t$) reactions on $^{22}$Ne and implications for $s$-process nucleosynthesis
Creators: name: Ota, S.
name: Christian, G.
name: Catford, W. N.
name: Lotay, G.
name: Pignatari, M.
name: Battino, U.
name: Bennett, E. A.
name: Dede, S.
name: Doherty, D. T.
name: Hallam, S.
name: Herwig, F.
name: Hooker, J.
name: Hunt, C.
name: Jayatissa, H.
name: Matta, A.
name: Mouhkaddam, M.
name: Rao, E.
name: Rogachev, G. V.
name: Saastamoinen, A.
name: Scriven, D.
name: Tostevin, J. A.
name: Upadhyayula, S.
name: Wilkinson, R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We studied $α$ cluster states in $^{26}$Mg via the $^{22}$Ne($^{6}$Li,$dγ$)$^{26}$Mg reaction in inverse kinematics at an energy of $7$ MeV/nucleon. States between $E_x$ = 4 - 12 MeV in $^{26}$Mg were populated and relative $α$ spectroscopic factors were determined. Some of these states correspond to resonances in the Gamow window of the $^{22}$Ne($α$,n)$^{25}$Mg reaction, which is one of the main neutron sources in the astrophysical $s$-process. We show that $α$-cluster strength of the states analyzed in this work have critical impact on s-process abundances. Using our new $^{22}$Ne($α$,n)$^{25}$Mg and $^{22}$Ne($α$,$γ$)$^{26}$Mg reaction rates, we performed new s-process calculations for massive stars and Asymptotic Giant Branch stars and compared the resulting yields with the yields obtained using other $^{22}$Ne+$α$ rates from the literature. We observe an impact on the s-process abundances up to a factor of three for intermediate-mass AGB stars and up to a factor of ten for massive stars. Additionally, states in $^{25}$Mg at $E_x$ $
A morphological comparison between giant radio halos and radio mini--halos in galaxy clusters
Creators: name: Cassano, R.
name: Gitti, M.
name: Brunetti, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this letter we present a morphological comparison between giant radio halos and radio mini-halos in galaxy clusters based on radio--X-ray luminosity, P_{1.4}-L_X, and radio luminosity-size, P_{1.4}-R_H, correlations. We report evidence that P_{1.4}-L_X and P_{1.4}-R_H trends may also exist for mini--halos: mini--halo clusters share the same region of giant halo clusters in the (P_{1.4},L_X) plane, whereas they are clearly separated in the (P_{1.4},R_H) plane. The synchrotron emissivity of mini-halos is found to be more than 50 times larger than that of giant halos, implying a very efficient process for their origins. By assuming a scenario of sporadical turbulent particle re-acceleration for both giant and mini halos, we discuss basic physical differences between these sources. Regardless of the origin of the turbulence, a more efficient source of injection of particles, which eventually takes part in the re-acceleration process, is required in mini-halos, and this may result from the central radio galaxy or from proton-proton collisions in the dense cool core regions.
description: 4 pages, 3 figures, A&A Letter in press
Quantum Chernoff bound as a measure of nonclassicality for one-mode Gaussian states
Creators: name: Boca, Madalina
name: Ghiu, Iulia
name: Marian, Paulina
name: Marian, Tudor A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We evaluate a Gaussian distance-type degree of nonclassicality for a single-mode Gaussian state of the quantum radiation field by use of the recently discovered quantum Chernoff bound. The general properties of the quantum Chernoff overlap and its relation to the Uhlmann fidelity are interestingly illustrated by our approach.
description: published version
Spontaneous exciton condensation in 1T-TiSe2: a BCS-like approach
Creators: name: Monney, C.
name: Cercellier, H.
name: Clerc, F.
name: Battaglia, C.
name: Schwier, E. F.
name: Didiot, C.
name: Garnier, M. G.
name: Beck, H.
name: Berger, H.
name: Forró, L.
name: Patthey, L.
name: Aebi, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently strong evidence has been found in favor of a BCS-like condensation of excitons in 1\textit{T}-TiSe$_2$. Theoretical photoemission intensity maps have been generated by the spectral function calculated within the excitonic condensate phase model and set against experimental angle-resolved photoemission spectroscopy data. Here, the calculations in the framework of this model are presented in detail. They represent an extension of the original excitonic insulator phase model of Jérome \textit{et al.} [Phys. Rev. {\bf 158}, 462 (1967)] to three dimensional and anisotropic band dispersions. A detailed analysis of its properties and further comparison with experiment are also discussed
description: Submitted to PRB, 11 pages, 7 figures
The challenge of unravelling magnetic properties in LaFeAsO
Creators: name: Mazin, I. I.
name: Johannes, M. D.
name: Boeri, L.
name: Koepernik, K.
name: Singh, D. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: First principles calculations of magnetic and, to a lesser extent, electronic properties of the novel LaFeAsO-based superconductors show substantial apparent controversy, as opposed to most weakly or strongly correlated materials. Not only do different reports disagree about quantitative values, there is also a schism in terms of interpreting the basic physics of the magnetic interactions in this system. In this paper, we present a systematic analysis using four different first principles methods and show that while there is an unusual sensitivity to computational details, well-converged full-potential all-electron results are fully consistent among themselves. What makes results so sensitive and the system so different from simple local magnetic moments interacting via basic superexchange mechanisms is the itinerant character of the calculated magnetic ground state, where very soft magnetic moments and long-range interactions are characterized by a particular structure in the reciprocal (as opposed to real) space. Therefore, unravelling the magnetic interactions in their full richness remains a challenging, but utterly important task.
title: CCA 2009 Front Matter - Proceedings of the Sixth International Conference on Computability and Complexity in Analysis
Creators: name: Bauer, Andrej
name: Hertling, Peter
name: Ko, Ker-I
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2009
Subjects: subject: Computable analysis
subject: computability
subject: complexity
subject: Turing machine
subject: constructive mathematics
subject: real number computation
subject: computer arithmetic
subject: exact real ari

description: The Sixth International Conference on Computability and Complexity in Analysis, CCA 2009, took place on August 18 to 22, 2009, in Ljubljana, Slovenia. The conference is concerned with Computable Analysis, the theory of computability and complexity over real-valued data. The conference program consisted of 4 invited talks, 2 tutorials of three talks each, and 24 contributed talks. These proceedings contain the abstracts or extended abstracts of the invited talks, tutorials, and a selection of 22 contributed articles.
description: OASIcs, Vol. 11, 6th International Conference on Computability and Complexity in Analysis (CCA'09), pages i-ii
The Effect of Corporate Governance Mechanisms on Earnings Informativeness through Earnings Persistence: Empirical Evidence from Thailand
Creators: name: Supana Sukanantasak
Publisher: name: คณะพาณิชยศาสตร์และการบัญชี มหาวิทยาลัยธรรมศาสตร์
Year: 2014
Subjects: Corporate Governance Mechanism; Earnings Quality; Earnings Persistence; Earnings Informativeness

description: 27 (เมษายน 57), 10, วารสารวิชาชีพบัญชี JAP
Again on hidden sector of the Universe, accessible through photonic portal
Creators: name: Krolikowski, Wojciech
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe more precisely the mechanism of spontaneous mass generation in the previously proposed model of hidden sector of the Universe. The hidden sector is conjectured to consist of sterile spin-1/2 fermions (sterinos) whose mass is spontaneously generated by sterile scalar bosons (sterons), while their interactions are mediated by sterile antisymmetric-tensor bosons (A bosons). Such a sector communicates with the familiar Standard Model sector through a photonic portal acting weakly between both sectors (but stronger than the universal gravity). This is due to photons which, beside sterinos and sterons, contribute to the source of the A bosons. Sterinos can be candidates for thermal cold dark matter. They can be also produced in sterino-antisterino pairs through virtual photons emitted in high-energy collisions of Standard Model charged particles. Sterinos display a tiny magnetic moment spontaneously generated by sterons.
description: 14 pages, two misprints in citation in Refs. [1] and [5] are corrected
Transverse-momentum resummation for boson plus jet production at hadron colliders
Creators: name: Buonocore, Luca
name: Grazzini, Massimiliano
name: Haag, Jürg
name: Rottoli, Luca
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the associated production of a vector or Higgs boson with a jet in hadronic collisions. When the transverse momentum $q_T$ of the boson-jet system is much smaller than its invariant mass $Q$, the QCD perturbative expansion is affected by large logarithmic terms that must be resummed to all orders. We discuss the all-order resummation structure of the logarithmically enhanced contributions up to next-to-leading logarithmic accuracy. Resummation is performed at the differential level with respect to the kinematical variables of the boson-jet system. Soft-parton radiation produces azimuthal correlations that are fully accounted for in our framework. We present explicit analytical results for the resummation coefficients up to next-to-leading order and next-to-leading logarithmic accuracy, that include the exact dependence on the jet radius.
description: 18 pages, 1 appendix
Définition d'une structure adaptative de réseau local sans fil à consommation optimisée
Creators: name: Chebira, Sabri
name: Mercier, Gilles
name: Francomme, Jackson
Publisher: name: arXiv
Year: 2008
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The strong growth of low rate wireless personal area networks (LR-WPAN), leads us to consider the autonomy problems, thus node lifetime in a network, knowing that the power supplies replacement is often difficult to realize. The inherent mobility in this type of equipment is an essential element. It will provide routing constraints, so a complex problem to solve. This article provides work lines to assess the performance of such a network in terms of energy consumption and mobility. The objectives are contradictory; it will necessarily find a compromise. In addition, if we want to guarantee a maximum delay for the transmitted messages, possibility offered by the IEEE 802.15-4 standard, another compromise necessitate a strictly fixed structure and a fully mobile structure. Therefore, we present a quantization of the energy cost related to the desired data rate and compared to the sleep duration of nodes in the network. Then, we open reflexion lines to find the best compromise: consumption / mobility / guaranteed deadlines, in suggesting an adaptive network structure from a concept of MANET.
Entanglement Measures for Intermediate Separability of Quantum States
Creators: name: Ichikawa, Tsubasa
name: Sasaki, Toshihiko
name: Tsutsui, Izumi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a family of entanglement measures R_m which act as indicators for separability of n-qubit quantum states into m subsystems for arbitrary 2 \leq m \leq n. The measure R_m vanishes if the state is separable into m subsystems, and for m = n it gives the Meyer-Wallach measure while for m = 2 it reduces, in effect, to the one introduced recently by Love et al. The measures R_m are evaluated explicitly for the GHZ state and the W state (and its modifications, the W_k states) to show that these globally entangled states exhibit rather distinct behaviors under the measures, indicating the utility of the measures R_m for characterizing globally entangled states as well.
description: 8 pages, 8 figures
Effects of non-vanishing dark matter pressure in the Milky Way galaxy
Creators: name: Boshkayev, Kuantay
name: Konysbayev, Talgar
name: Kurmanov, Ergali
name: Luongo, Orlando
name: Malafarina, Daniele
name: Mutalipova, Kalbinur
name: Zhumakhanova, Gulnur
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the possibility that the Milky Way's dark matter halo possesses a non vanishing equation of state. Consequently, we evaluate the contribution due to the speed of sound, assuming that the dark matter content of the galaxy behaves like a fluid with pressure. In particular, we model the dark matter distribution via an exponential sphere profile in the galactic core, and inner parts of the galaxy whereas we compare the exponential sphere with three widely-used profiles for the halo, i.e. the Einasto, Burkert and Isothermal profile. For the galactic core we also compare the effects due to a dark matter distribution without black hole with the case of a supermassive black hole in vacuum and show that present observations are unable to distinguish them. Finally we investigate the expected experimental signature provided by gravitational lensing due to the presence of dark matter in the core.
description: 13 pages, 8 figures
The use of Chinese geomancy in contemporary architectural design
Creators: name: Mok, Ru-Ping
Publisher: name: University of British Columbia
Year: 2010

description: In the field of contemporary architectural design the expression of cultural images without relying on superficial traditional motifs is a major concern. That contemporary architectural design should nevertheless express cultural images is the author's belief. One method for incorporating basic Chinese cultural principles in architectural design might be to follow Chinese geomantic orders expressed in modern functional and formal terms. The main source of the geomantic principles applied in the studies are based on "Yang Chai Shih Shu" ("The Ten Books of Yang Dwelling", by Sang Wei, fifth century), which gives the basis for orientations, site selection, the courtyard concept and other concepts of building lay-out. A design process based on geomantic staging was developed for the experiment to investigate how the modern designer might integrate and coordinate the input of the professional geomancer with that of the architect-designer and other specialists. In order to test the method, a hypothetical program was developed for a Chinese Cultural Research Institute. The design method attempted to respond to a decision-making process which took into account Chinese geomantic principles and other Chinese traditional requirements together with a contemporary design approach. The result of the design experiment may not only show how a unique "Chinese" character can be expressed in modern, non-superficial terms but may also serve as an introduction to the science and use of Chinese geomancy for those unfamiliar with it.
Quasinormal modes from potentials surrounding the charged dilaton black hole
Creators: name: Myung, Yun Soo
name: Kim, Yong-Wan
name: Park, Young-Jai
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We clarify the purely imaginary quasinormal frequencies of a massless scalar perturbation on the 3D charged-dilaton black holes. This case is quite interesting because the potential-step appears outside the event horizon similar to the case of the electromagnetic perturbations on the large Schwarzschild-AdS black holes. It turns out that the potential-step type provides the purely imaginary quasinormal frequencies, while the potential-barrier type gives the complex quasinormal modes.
description: 19 pages, 8 figures
Master equations for Wigner functions with spontaneous collapse and their relation to thermodynamic irreversibility
Creators: name: Vrugt, Michael te
name: Tóth, Gyula I.
name: Wittkowski, Raphael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: History and Philosophy of Physics (physics.hist-ph)
subject: FOS: Physical sciences

description: Wigner functions, allowing for a reformulation of quantum mechanics in phase space, are of central importance for the study of the quantum-classical transition. A full understanding of the quantum-classical transition, however, also requires an explanation for the absence of macroscopic superpositions to solve the quantum measurement problem. Stochastic reformulations of quantum mechanics based on spontaneous collapses of the wavefunction are a popular approach to this issue. In this article, we derive the dynamic equations for the four most important spontaneous collapse models - Ghirardi-Rimini-Weber (GRW) theory, continuous spontaneous localization (CSL) model, Diósi-Penrose model, and dissipative GRW model - in the Wigner framework. The resulting master equations are approximated by Fokker-Planck equations. Moreover, we use the phase-space form of GRW theory to test, via molecular dynamics simulations, David Albert's suggestion that the stochasticity induced by spontaneous collapses is responsible for the emergence of thermodynamic irreversibility. The simulations show that, for initial conditions leading to anti-thermodynamic behavior in the classical case, GRW-type perturbations do not lead to thermodynamic behavior. Consequently, the GRW-based equilibration mechanism proposed by Albert is not observed.
description: 22 pages, 2 figures
Human-Centered Design for Data-Sparse Tailored Privacy Information Provision
Creators: name: Goram, Mandy
name: Dehling, Tobias
name: Morsbach, Felix
name: Sunyaev, Ali
Publisher: name: Springer International Publishing
Year: 2023
Subjects: Privacy preferences
Privacy-preserving mechanisms
Tailoring
Human-centered design
Privacy-enhancing technologies
Transparency-enhancing technologies

description: One way to reduce privacy risks for consumers when using the internet is to inform them better about the privacy practices they will encounter. Tailored privacy information provision could outperform the current practice where information system providers do not much more than posting unwieldy privacy notices. Paradoxically, this would require additional collection of data about consumers' privacy preferences—which constitute themselves sensitive information so that sharing them may expose consumers to additional privacy risks. This chapter presents insights on how this paradoxical interplay can be outmaneuvered. We discuss different approaches for privacy preference elicitation, the data required, and how to best protect the sensitive data inevitably to be shared with technical privacy-preserving mechanisms. The key takeaway of this chapter is that we should put more thought into what we are building and using our systems for to allow for privacy through human-centered design instead of static, predefined solutions which do not meet consumer needs.
Quantum Private Queries: security analysis
Creators: name: Giovannetti, Vittorio
name: Lloyd, Seth
name: Maccone, Lorenzo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a security analysis of the recently introduced Quantum Private Query (QPQ) protocol. It is a cheat sensitive quantum protocol to perform a private search on a classical database. It allows a user to retrieve an item from the database without revealing which item was retrieved, and at the same time it ensures data privacy of the database (the information that the user can retrieve in a query is bounded and does not depend on the size of the database). The security analysis is based on information-disturbance tradeoffs which show that whenever the provider tries to obtain information on the query, the query (encoded into a quantum system) is disturbed so that the person querying the database can detect the privacy violation.
description: 12 pages, 1 figure
title: Poor brides of Christ : distinctive forms of Franciscan mysticism in Bonaventure and Angela of Foligno
Creators: name: Hahn, Michael Stephen
Publisher: name: University of St Andrews
Year: 2020

description: This thesis examines the distinctive nature of early Franciscan mystical theology. Working from Bernard McGinn and Kevin Hughes’ argument that there is little in Francis of Assisi’s own writings that can be considered mystical but that he creates a spiritual milieu, I argue that Francis (1181/2-1226) and Clare of Assisi (1193/4-1253) develop a theological outlook grounded in their emphasis of physical and interior poverty. I then examine how this tradition is inherited by two Franciscan mystics: Bonaventure (c.1217-1274) and Angela of Foligno (d.1309). Part One explores the origins of the Franciscan order and the development of what can be called its ‘theology of poverty.’ Chapter One examines Francis through his own texts, and the hagiographic texts written about him. Chapter Two focusses on Clare as developing Francis’s focus on poverty, in her forma vitae and letters. Part Two argues that Bonaventure and Angela develop Francis and Clare’s theology of poverty into overtly mystical writings. Chapter Three presents Bonaventure as a scholastic expression of Franciscan mysticism, taking influence from both Francis and Clare in the many genres in which he presents his mystical theology. Chapter Four then compares Bonaventure to his contemporary and fellow scholastic mystic, Meister Eckhart. Chapter Five examines the Franciscan nature of Angela’s vernacular mystical theology, presenting the central roles poverty and a focus on Francis as alter Christus play in her theology. Chapter Six compares Angela to her contemporaries from Northern Europe, most notably Hadewijch, Mechthild of Magdeburg, and Marguerite Porete. Bonaventure and Angela share key components that are characteristic of Franciscan mysticism in this period. Namely, this includes self-annihilation as imitating Christ’s kenosis, and a focus on the enduring quality of penitential and ascetical practices.
Évaluation d'une application de transmission d'images médicales avec un réseau sans fil
Creators: name: Francomme, Jackson
name: Mercier, Gilles
name: Chebira, Sabri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: We offer a platform for database consultations and/or biomedical images exchanges, adapted to the low rate wireless transmission, and intended for general practitioners or specialists. The goal can be preventive, diagnostic and therapeutic. it Concerns specialties such as radiology, ultrasound, the anatomical pathology or endoscopy. The main features required in such a context are to adjust the data compression of both the specific needs of telemedicine and limited capabilities of wireless communication networks. We present our approach in which we have set out criteria on Biomedical images quality, compressed by the wavelet method to retain all the necessary information for an accurate diagnosis, and determined the characteristics of a wireless network with minimal performances for the transmission of these images within constraints related to the modality and the data flow, in this case Wifi based on the IEEE 802.11 standard. Our results will assess the capacity of this standard in terms of speed, to transmit images at a rate of 10 frames per second. It will be necessary to quantify the amount of information to add to the image datas to enable a transmission in good conditions and the appropriate modus operandi.
description: 12 pages
(216) Kleopatra, a low density critically rotating M-type asteroid
Creators: name: Marchis, F.
name: Jorda, L.
name: Vernazza, P.
name: Brož, M.
name: Hanuš, J.
name: Ferrais, M.
name: Vachier, F.
name: Rambaux, N.
name: Marsset, M.
name: Viikinkoski, M.
name: Jehin, E.
name: Benseguane, S.
name: Podlewska-Gaca, E.
name: Carry, B.
name: Drouard, A.
name: Fauvaud, S.
name: Birlan, M.
name: Berthier, J.
name: Bartczak, P.
name: Dumas, C.
name: Dudzinski, G.
name: Durech, J.
name: Castillo-Rogez, J.
name: Cipriani, F.
name: Colas, F.
name: Fetick, R.
name: Fusco, T.
name: Grice, J.
name: Kryszczynska, A.
name: Lamy, P.
name: Marciniak, A.
name: Michalowski, T.
name: Michel, P.
name: Pajuelo, M.
name: Santana-Ros, T.
name: Tanga, P.
name: Vigan, A.
name: Witasse, O.
name: Yang, B.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Context. The recent estimates of the 3D shape of the M/Xe-type triple asteroid system (216) Kleopatra indicated a density of 5 g.cm$^{-3}$. Such a high density implies a high metal content and a low porosity which is not easy to reconcile with its peculiar dumbbell shape. Aims. Given the unprecedented angular resolution of the VLT/SPHERE/ZIMPOL camera, we aim to constrain the mass and the shape of Kleopatra with high accuracy, hence its density. Methods. We combined our new VLT/SPHERE observations of Kleopatra recorded in 2017 and 2018 with archival data, as well as lightcurve, occultation, and delay-Doppler images, to derive its 3D shape model using two different algorithms (ADAM, MPCD). Furthermore, an N-body dynamical model allowed us to retrieve the orbital elements of the two moons as explained in the accompanying paper. Results. The shape of Kleopatra is very close to an equilibrium dumbbell figure with two lobes and a thick neck. Its volume equivalent diameter (118.75$\pm$1.40) km and mass (2.97$\pm$0.32) 10$^{18}$ kg imply a bulk density of (3.38$\pm$0.50) g cm$^{-3}$. Such a low density for a supposedly metal-rich body indicates a substantial porosity within the primary. This porous structure along with its near-equilibrium shape is compatible with a formation scenario including a giant impact followed by reaccumulation. Kleopatra's current rotation period and dumbbell shape imply that it is in a critically rotating state. The low effective gravity along the equator of the body, together with the equatorial orbits of the moons and possibly rubble-pile structure, opens the possibility that the moons formed via mass shedding. Conclusions. Kleopatra is a puzzling multiple system due to the unique characteristics of the primary. It deserves particular attention in the future, with the Extremely Large Telescopes and possibly a dedicated space mission.
description: Accepted for publication in Astronomy and Astrophysics
Fast Extraction of Word Embedding from Q-contexts
Creators: name: Kong, Junsheng
name: Li, Weizhao
name: Liu, Zeyi
name: Liao, Ben
name: Qiu, Jiezhong
name: Hsieh, Chang-Yu
name: Cai, Yi
name: Zhang, Shengyu
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The notion of word embedding plays a fundamental role in natural language processing (NLP). However, pre-training word embedding for very large-scale vocabulary is computationally challenging for most existing methods. In this work, we show that with merely a small fraction of contexts (Q-contexts)which are typical in the whole corpus (and their mutual information with words), one can construct high-quality word embedding with negligible errors. Mutual information between contexts and words can be encoded canonically as a sampling state, thus, Q-contexts can be fast constructed. Furthermore, we present an efficient and effective WEQ method, which is capable of extracting word embedding directly from these typical contexts. In practical scenarios, our algorithm runs 11$\sim$13 times faster than well-established methods. By comparing with well-known methods such as matrix factorization, word2vec, GloVeand fasttext, we demonstrate that our method achieves comparable performance on a variety of downstream NLP tasks, and in the meanwhile maintains run-time and resource advantages over all these baselines.
description: Accepted by CIKM 2021
Thermodynamics of Plasmaballs and Plasmarings in 3+1 Dimensions
Creators: name: Bhardwaj, Shanthanu
name: Bhattacharya, Jyotirmoy
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study localized plasma configurations in 3+1 dimensional massive field theories obtained by Scherk-Schwarz compactification of 4+1 dimensional CFT to predict the thermodynamic properties of localized blackholes and blackrings in Scherk-Schwarz compactified $AdS_6$ using the AdS/CFT correspondence. We present an exact solution to the relativistic Navier-Stokes equation in the thin ring limit of the fluid configuration. We also perform a thorough numerical analysis to obtain the thermodynamic properties of the most general solution. Finally we compare our results with the recent proposal for the phase diagram of blackholes in six flat dimensions and find some similarities but other differences.
description: 18 pages, 11 figures, latex; v2: Typos corrected and new references added
Temperature dependence of the excitonic insulator phase model in 1T-TiSe2
Creators: name: Monney, C.
name: Cercellier, H.
name: Clerc, F.
name: Battaglia, C.
name: Schwier, E. F.
name: Didiot, C.
name: Garnier, M. G.
name: Beck, H.
name: Aebi, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Recently, detailed calculations of the excitonic insulator phase model adapted to the case of 1\textit{T}-TiSe$_2$ have been presented. Through the spectral function theoretical photoemission intensity maps can be generated which are in very good agreement with experiment [Phys. Rev. Lett. {\bf 99}, (2007) 146403]. In this model, excitons condensate in a BCS-like manner and give rise to a charge density wave, characterized by an order parameter. Here, we assume an analytical form of the order parameter, allowing to perform temperature dependent calculations. The influence of this order parameter on the electronic spectral function, to be observed in photoemission spectra, is discussed. The resulting chemical potential shift and an estimation of the resistivity are also shown.
description: 4 pages, 3 figures, paper submitted at the Strongly Correlated Electron System conference, Brazil, 2008
title: ATMOS 2009 Preface -- 9th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems
Creators: name: Clausen, Jens
name: Di Stefano, Gabriele
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2009
Subjects: subject: Combinatorial optimization
subject: transportation
subject: scheduling
subject: infrastructure planning
subject: timetables

description: The 9th ATMOS workshop was held in Copenhagen, September 10, 2008,
within ALGO, an annual meeting combining European algorithms conferences
and workshops. ATMOS focuses specifically on models, algorithms and methods for optimization problems in transportation systems.
description: OASIcs, Vol. 12, 9th Workshop on Algorithmic Approaches for Transportation Modeling, Optimization, and Systems (ATMOS'09), pages i-iii
Nuclear giant quadruple resonance within transport approach and its constraint on nucleon effective mass
Creators: name: Song, Yi-Dan
name: Wang, Rui
name: Zhang, Zhen
name: Ma, Yu-Gang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the nuclear iso-scalar giant quadruple resonance~(ISGQR) based on the Boltzmann-Uehling-Uhlenbeck~(BUU) transport equation. The mean-field part of the BUU equation is described by the Skyrme nucleon-nucleon effective interaction, and its collision term, which embodies the two-particle-two-hole ($2$p-$2$h) correlation, is implemented through the stochastic approach. We find that the width of ISGQR for heavy nuclei is exhausted dominated by collisional damping, which is incorporated into the BUU equation through its collision term, and it can be well reproduced through employing a proper in-medium nucleon-nucleon cross section. Based on further Vlasov and BUU calculations with a number of representative Skyrme interactions, the iso-scalar nucleon effective mass at saturation density is extracted respectively as $m^{*}_{s,0}/m$ $=$ $0.83\pm0.04$ and $m^{*}_{s,0}/m$ $=$ $0.82\pm0.03$ from the measured excitation energy $E_x$ of the ISGQR of $\isotope[208]{Pb}$. The small discrepancy between the two constraints indicates the negligible role of $2$p-$2$h correlation in constraining $m_{s,0}^*$ with the ISGQR excitation energy.
description: 7 pages, 5 figures; accepted by Physical Review C
Modeling single- and multiple-electron resonances for electric-field-sensitive scanning probes
Creators: name: Tessmer, S. H.
name: Kuljanishvili, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have developed a modeling method suitable to analyze single- and multiple-electron resonances detected by electric-field-sensitive scanning probe techniques. The method is based on basic electrostatics and a numerical boundary-element approach. The results compare well to approximate analytical expressions and experimental data.
description: 10 pages, 4 figures
Collapse of the Electron Gas to Two Dimensions in Density Functional Theory
Creators: name: Constantin, Lucian A.
name: Perdew, John P.
name: Pitarke, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Local and semilocal density-functional approximations for the exchange-correlation energy fail badly in the zero-thickness limit of a quasi-two-dimensional electron gas, where the density variation is rapid almost everywhere. Here we show that a fully nonlocal fifth-rung functional, the inhomogeneous Singwi-Tosi-Land-Sjölander (STLS) approach, which employs both occupied and unoccupied Kohn-Sham orbitals, recovers the true two-dimensional STLS limit and appears to be remarkably accurate for any thickness of the slab (and thus for the dimensional crossover). We also show that this good behavior is only partly due to the use of the full exact exchange energy.
description: 4 pages, 2 figures
Large HI optical depth and Redshifted 21-cm signal from cosmic dawn
Creators: name: Datta, Kanan K.
name: Ghara, Raghunath
name: Hoque, Ariful
name: Majumdar, Suman
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The HI 21-cm optical depth ($τ_b$) can be considerably large as the kinetic and spin temperature of the inter-galactic medium (IGM) is expected to be very low during cosmic dawn. It will be particularly higher at regions with HI over-density. We revisit the validity of the widely used linearized equation for estimating the HI 21-cm differential brightness temperature ($T_b$) which assumes $τ_b << 1$ and approximates $[1-\exp({-τ_b})]$ as $τ_b$. We consider two scenarios, one without any additional cooling mechanism or radio background (referred as the standard scenario) and the other (referred as the excess-cooling} scenario) assumes the EDGES-like absorption profile and an excess cooling mechanism. We find that given a measured global absorption signal, consistent with the standard (excess-cooling) scenario, the linearized equation overestimates the spin temperature by $\sim 5\%(10\%)$. Further, using numerical simulations, we study the impact that the large optical depth has on various signal statistics. We observe that the variance, skewness and kurtosis, calculated at simulation resolution ($\sim 0.5 h^{-1} \, {\rm Mpc}$), are over-predicted up to $\sim 30\%$, $30\%$ and $15\%$ respectively for the standard and up to $\sim 90\%$, $50\%$ and $50\%$ respectively for the excess-cooling scenario. Moreover, we find that the probability distribution function of $T_b$ is squeezed and becomes more Gaussian in shape if no approximation is made. The spherically averaged HI power spectrum is overpredicted by up to $\sim 25 \%$ and $80\%$ at all scales for the standard and excess-cooling scenarios respectively.
description: 9 pages, 6 figures. Accepted for publication in the MNRAS
Historische Injektionspräparate.
Creators: name: Fuchs, Jakob
Publisher: name: Humboldt-Universität zu Berlin
Year: 2021
Subjects: subject: Anatomische Präparate
subject: Konservierung/Restaurierung
subject: Historische Herstellungstechnik
subject: 700 Künste, Bildende und angewandte Kunst

description: Die Herstellung von Injektionspräparaten entwickelte sich in Europa bereits im 17. Jahrhundert. Durch den Einsatz spezieller Techniken und geeigneter Materialien gelang es den Anatomen, Arterien, Venen und Lymphbahnen sichtbar zu machen und Präparate als Lehrmittel herzustellen, die sich für eine dauerhafte Nutzung eigneten. Für das Dissertationsprojekt im Bereich Konservierung/Restaurierung sind besonders die im 18. und 19. Jahrhundert bei der Injektion verwendeten Materialien und Techniken von großem Forschungsinteresse. Fokussiert wurde hierbei auf humananatomische Präparate. Durch die Begutachtung von Injektionspräparaten in medizinischen/anatomischen Sammlungen Europas (eine Liste der beprobten Injektionspräparate ist beigefügt, etliche weitere hier nicht namentlich aufgelistete Sammlungen wurden beforscht), durch die Recherche von historischer Literatur und mit eigenen praktischen Versuchen wird die Herstellungstechnik dieser Präparate erforscht. Erste Ergebnisse einer länger angelegten Studie werden hier präsentiert. Diese Ergebnisse können weiteren Forschungen dienen, indem sie es Museen und Sammlungen ermöglichen, eigene Forschungsergebnisse im internationalen Vergleich zu betrachten. Zum anderen trägt die konkrete Kenntnis über die Herstellungstechnik und die Materialeigenschaften dazu bei, künftig fachgerechte Konservierungs- und Restaurierungskonzepte für diese Präparate zu entwickeln. Der vorliegende Beitrag zeigt einige Möglichkeiten, aber auch Grenzen auf, die sich aus der Interpretation der bisherigen Forschungsergebnisse ergeben.
Range contraction and expansion of the African buffalo under climate change scenarios
Creators: name: Lawer, Eric Adjei
name: Darkoh, Esther Love
name: Akasere, Christopher
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Computational Biology

description: Climate change is one of the leading causes of global biodiversity declines and extinctions. Yet knowledge of its impact on African buffalo distribution on the continent is lacking. In this study, we apply ensemble species distribution modelling to predict the distribution of two coarsely defined African buffalo functional groups under current and future climate scenarios (Shared Socioeconmic Pathway, SSP245 and SSP585 in 2100) and estimate habitat representation within protected areas. Model predictions indicate significant range contraction and expansion in the savanna and the forest buffalo functional groups, respectively. Also, the proportion of suitable habitats for both functional groups is represented poorly within protected areas, with the current coverage expected to decline further. Our findings reveal plausible implications of climate change on African buffalo conservation and zoonotic diseases. Overall, this climate-based approach could be applied to model the distribution of African buffalo subspecies at local geographical scales in countries with adequately sampled occurrence data to support conservation decision-making. Species distribution modelling reveals range contraction and expansion of the African buffalo due to climate change.African buffalo range contraction is more severe under a high-emission scenario (SSP585) than a low-emission scenario (SSP245).The African buffalo range is represented poorly within protected areas.Climatically suitable areas may present potential sites for effective management and translocations or reintroductions to conserve the African buffalo. Species distribution modelling reveals range contraction and expansion of the African buffalo due to climate change. African buffalo range contraction is more severe under a high-emission scenario (SSP585) than a low-emission scenario (SSP245). The African buffalo range is represented poorly within protected areas. Climatically suitable areas may present potential sites for effective management and translocations or reintroductions to conserve the African buffalo.