cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Front Matter, Table of Contents, Preface, Conference Organization
Creators: name: Lokam, Satya
name: Ramanujam, R.
Publisher: name: Schloss Dagstuhl – Leibniz-Zentrum für Informatik
Year: 2018
Subjects: subject: Front Matter
subject: Table of Contents
subject: Preface
subject: Conference Organization
subject: External Reviewers

description: Front Matter, Table of Contents, Preface, Conference Organization
description: LIPIcs, Vol. 93, 37th IARCS Annual Conference on Foundations of Software Technology and Theoretical Computer Science (FSTTCS 2017), pages 0:i-0:x
Magnetism and Superconductivity in the Two-Dimensional 16 Band d-p Model for Iron-Based Superconductors
Creators: name: Yanagi, Yuki
name: Yamakawa, Youichi
name: Ōno, Yoshiaki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The electronic states of the Fe2As2 plane in iron-based superconductors are investigated on the basis of the two-dimensional 16-band d-p model which includes the Coulomb interaction on a Fe site: the intra- and inter-orbital direct terms U and U', the Hund's coupling J and the pair-transfer J'. Using the random phase approximation (RPA), we obtain the magnetic phase diagram including the stripe and the incommensurate order on the U'-J plane. We also solve the superconducting gap equation within the RPA and find that, for large J, the most favorable pairing symmetry is extended s-wave whose order parameter changes its sign between the hole pockets and the electron pockets, while it is dxy-wave for small J.
description: 4 pages, 5 figures
Quasi-periodic Oscillations in Rotating Ellis Wormhole Spacetimes
Creators: name: Deligianni, Efthimia
name: Kleihaus, Burkhard
name: Kunz, Jutta
name: Nedkova, Petya
name: Yazadjiev, Stoytcho
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We analyze the properties of the circular orbits for massive particles in the equatorial plane of symmetric rotating Ellis wormholes. In particular, we obtain the orbital frequencies and the radial and vertical epicyclic frequencies, and consider their lowest parametric, forced and Keplerian resonances. These show that quasi-periodic oscillations in accretion disks around symmetric rotating Ellis wormholes have many distinct properties as compared to quasi-periodic oscillations in accretion disks around rotating Teo wormholes and the Kerr black hole. Still we can distinguish some common features which appear in wormhole spacetimes as opposed to black holes. The most significant ones include the possibility of excitation of stronger resonances such as lower order parametric and forced resonances and the localization of these resonances deep in the region of strong gravitational interaction near the wormhole throat, which will lead to further amplification of the signal.
description: 21 pages, 16 figures
Pure-state quantum trajectories for general non-Markovian systems do not exist
Creators: name: Wiseman, Howard M.
name: Gambetta, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Since the first derivation of non-Markovian stochastic Schrödinger equations, their interpretation has been contentious. In a recent Letter [Phys. Rev. Lett. 100, 080401 (2008)], Diósi claimed to prove that they generate "true single system trajectories [conditioned on] continuous measurement". In this Letter we show that his proof is fundamentally flawed: the solution to his non-Markovian stochastic Schrödinger equation at any particular time can be interpreted as a conditioned state, but joining up these solutions as a trajectory creates a fiction.
description: 4 pages
A method for studying lipid adsorption to silicone hydrogel contact lenses
Creators: name: Masoudi, Simin
name: Willcox, Mark
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 60506 Virology
subject: FOS: Biological sciences

description: The aim of this study was to develop an experimental methodology to measure lipid deposition with contact lenses. Contact lenses were incubated in a lipid solution. The amount and types of adsorbed lipids were assessed using mass spectrometry and confocal microscopy. The recovery of lipids from lenses varied with lipid and lens type. Most non-polar and polar lipids were desorbed from lenses during the first 5 min of extraction. Fluorescently labelled phosphatidylcholine bound within the matrix of Senofilcon A lenses but to the surface of Lotrafilcon B lenses, whereas fluorescently labelled cholesteryl ester was found throughout both lenses. The efficacy of extraction of lipids from contact lenses varies for different lipid classes and different lens materials. Differences in the amount and time of lipid desorption probably resulted from the strength of the bond between lipid and lens polymer and the depth of adsorption of lipid in the polymer.
Fruit ripening/scald relationship in apple
Creators: name: Gutierrez, Maria Soledad <1978>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: AGR/03 Arboricoltura generale e coltivazioni arboree

description: The ripening stage of apple fruits at harvest is the main factor influencing fruit quality during the cold storage period that lasts several months and give rise to physiological disorders in fruits of susceptible cultivars. In particular, superficial scald is connected to α-farnesene oxidation, leading to fruit browning. Therefore, the assessment of the optimal ripening stage at harvest is considered to be crucial to control the overall quality, the length of storage life and the scald incidence. However, the maturity indexes traditionally used in the horticultural practice do not strictly correlate with fruit maturity, and do not account for the variability occurring in the field. Hence, the present work focused on the determination of apple fruit ripening with the use of an innovative, non-destructive device, the DA-meter. The study was conducted on ‘Granny Smith’ and ‘Pink Lady’ cultivars, which differ in scald susceptibility. Pre- and post- harvest ripening behavior of the fruits was studied, and the influence of ripening stage and treatments with 1-MCP were evaluated in relation to scald development and related metabolites. IAD was shown to be a reliable indicator of apple ripening, allowing cultivar-specific predictions of the optimal harvest time in different growing seasons. IAD may also be employed to segregate apple fruits in maturity classes, requiring different storage conditions to control flesh firmness reduction and scald incidence. Moreover, 1-MCP application is extremely effective in reducing superficial scald, and its effect is influenced by fruit ripening stage reached at harvest. However, the relation between ethylene and α-farnesene was not entirely elucidated. Thus, ethylene can be involved in other oxidative processes associated with scald besides α-farnesene regulation.
Utilizing machine learning to improve the precision of fluorescence imaging of cavity-generated spin squeezed states
Creators: name: Malia, Benjamin K.
name: Wu, Yunfan
name: Martínez-Rincón, Julián
name: Kasevich, Mark A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a supervised learning model to calibrate the photon collection rate during the fluorescence imaging of cold atoms. The linear regression model finds the collection rate at each location on the sensor such that the atomic population difference equals that of a highly precise optical cavity measurement. This 192 variable regression results in a measurement variance 27% smaller than our previous single variable regression calibration. The measurement variance is now in agreement with the theoretical limit due to other known noise sources. This model efficiently trains in less than a minute on a standard personal computer's CPU, and requires less than 10 minutes of data collection. Furthermore, the model is applicable across a large changes in population difference and across data collected on different days.
Engineering of pyro-electrohydrodynamic effect for microrheological characterization
Creators: name: Setaro, Francesca
Publisher: name: Zenodo
Year: 2021

description: In this work, focused on electrified fluid jets, the versatility of P-jet system is used to obtain measurements typical of a micro-rheometer directly from the analysis of videos and images acquired during the experimental phase, thus reducing the time analysis typical of a micro-rheometer that is computationally intensive. Unlike a typical electrohydrodynamic-jet (e-jet) system, the pyro-electric system offers some advantages: it is nozzle-free and electrode-free because now the electric field is generated pyroelectrically.
 The aim of this work is to use the p-jet system as a reliable micro-rheometer by finding a relationship between the fluid viscosity and p-jet measurements (such as number of jet events, first jet formation time and cone angle shape). PDMS as a fluid model at four different viscosities (10.000 – 30.000 – 60.000 – 100.000 cSt) was analyzed. The results obtained show a strong dependence on viscosity. In particular, the shape of the cone angle becomes sharper as viscosity increases, departing from the ideal Taylor cone shape (as reported in the literature in the case of the traditional e-jet system). The formation time of the first jet increases with increasing viscosity because the fluid with lower viscosity takes less time to be affected by the electric field generated pyroelectrically.
 Finally, the number of jets increases as the viscosity decreases, as lower viscosity fluids are affected more rapidly than higher viscosity fluids, by electrostatic attraction. A possible future perspective of this work is to provide the experimental data as input for an artificial neural network. This will lead to a computational solution of the problem, thus reducing the analysis time.
Vainshtein Mechanism in Generalised Massive Gravity
Creators: name: Gumrukcuoglu, A. Emir
name: Kimura, Rampei
name: Kenna-Allison, Michael
name: Koyama, Kazuya
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a non-linear analysis of perturbations around cosmological solutions in Generalised Massive gravity. This Lorentz invariant theory is an extension of de Rham, Gabadadze, Tolley massive gravity that propagates $5$ degrees of freedom while allowing stable open FLRW cosmologies. For a minimal model that supports a self-accelerating background, we study the dynamics of non-linear perturbations. We find that the equation for the scalar graviton is distinct from the analogues in Horndeski and DHOST theories. We numerically solve the equation to find a new type of nonlinear solution for the scalar mode, and confirm the presence of a Vainshtein screening mechanism. We show that the PPN parameter approaches its GR value at solar system scales and satisfies the current bounds.
description: 21 pages, 6 figures
A Study of the Soft X-ray Emission Lines in NGC 4151 II. The Internal Plasma Properties
Creators: name: Grafton-Waters, S.
name: Dunn, W.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We showcase a tool suite that enables the fitting of soft X-ray spectra in active galactic nuclei (AGN), without the need for specialist software, allowing access to AGN physics for school students. While these standardised Python tools were useful for measuring velocities (Note I), they offered significantly fewer capabilities for radiative recombination continua (RRC), and R and G ratios, utilised to obtain the internal plasma properties within the out owing wind seen in NGC 4151. Although further work is required for these tools to be used in outreach projects, we present findings of the plasma temperature and density in NGC 4151 spanning a 15 year period.
description: 3 pages, 1 figure
Multi-instanton and string loop corrections in toroidal orbifold models
Creators: name: Camara, P. G.
name: Dudas, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze N=2 (perturbative and non-perturbative) corrections to the effective theory in type I orbifold models where a dual heterotic description is available. These corrections may play an important role in phenomenological scenarios. More precisely, we consider two particular compactifications: the Bianchi-Sagnotti-Gimon-Polchinski orbifold and a freely-acting Z_2 x Z_2 orbifold with N=1 supersymmetry and gauge group SO(q) x SO(32-q). By exploiting perturbative calculations of the physical gauge couplings on the heterotic side, we obtain multi-instanton and one-loop string corrections to the Kähler potential and the gauge kinetic function for these models. The non-perturbative corrections appear as sums over relevant Hecke operators, whereas the one-loop correction to the Kähler potential matches the expression proposed in [1,2]. We argue that these corrections are universal in a given class of models where target-space modular invariance (or a subgroup of it) holds.
description: 37 pages, 3 figures
title:  Morally Provocative Art: Contemporary Ethical-Aesthetic Discourse and its Limits
Creators: name: Gomes  ,  Carolina
Publisher: name: Roma TrE-Press
Year: 2021

description: Recently, there have been many protests against controversial art around the world that got massive media attention and provoked discussions among the public, members of the art community, and scholars. This paper aims to make a review of recent ethical-aesthetic theories that explore morally provocative art. We can characterize contemporary ethical and aesthetic thought by its movement from extreme forms of moralism (Plato, Hume, Tolstoy) and autonomy (Wilde, Beardsley) to the search for more moderate options, in which both moral and aesthetic domains are considered valuable. By reviewing such concepts as ‘moderate moralism’, ‘ethicism’, ‘moderate autonomism’, ‘cognitive triviality’, and ‘cognitive immoralism’, I claim that these concepts mainly focus on artworks that rarely or never stir the outrage among the public in real life, even though these theories accurately reveal themes that are often perceived as controversial. I then propose to go beyond the analysis of the artistic field since contemporary conflicts around art have already become factors of change for the socio-cultural landscape and function as a platform where diverse social and political forces test their values
description: Everydayness. Contemporary Aesthetic Approaches
Evaluation of new spin foam vertex amplitudes
Creators: name: Khavkine, Igor
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Christensen-Egan algorithm is extended and generalized to efficiently evaluate new spin foam vertex amplitudes proposed by Engle, Pereira & Rovelli and Freidel & Krasnov, with or without (factored) boundary states. A concrete pragmatic proposal is made for comparing the different models using uniform methodologies, applicable to the behavior of large spin asymptotics and of expectation values of specific semiclassical observables. The asymptotics of the new models exhibit non-oscillatory, power-law decay similar to that of the Barrett-Crane model, though with different exponents. Also, an analysis of the semiclassical wave packet propagation problem indicates that the Magliaro, Rovelli and Perini's conjecture of good semiclassical behavior of the new models does not hold for generic factored states, which neglect spin-spin correlations.
description: 34 pages, 8 figures, amsrefs; v3: merged with 0810.1653, updated bibl., version submitted to CQG
Clouds, Clumps, Cores & Comets - a Cosmic Chemical Connection?
Creators: name: Charnley, S. B.
name: Rodgers, S. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the connection between the chemistry of dense interstellar clouds and those characteristics of cometary matter that could be remnants of it. The chemical evolution observed to occur in molecular clouds is summarized and a model for dense core collapse that can plausibly account for the isotopic fractionation of hydrogen, nitrogen, oxygen and carbon measured in primitive solar system materials is presented.
description: to be published in Advances in Geosciences
Axisymmetric membranes with edges under external force: buckling, minimal surfaces, and tethers
Creators: name: Jia, Leroy L.
name: Pei, Steven
name: Pelcovits, Robert A.
name: Powers, Thomas R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We use theory and numerical computation to determine the shape of an axisymmetric fluid membrane with a resistance to bending and constant area. The membrane connects two rings in the classic geometry that produces a catenoidal shape in a soap film. In our problem, we find infinitely many branches of solutions for the shape and external force as functions of the separation of the rings, analogous to the infinite family of eigenmodes for the Euler buckling of a slender rod. Special attention is paid to the catenoid, which emerges as the shape of maximal allowable separation when the area is less than a critical area equal to the planar area enclosed by the two rings. A perturbation theory argument directly relates the tension of catenoidal membranes to the stability of catenoidal soap films in this regime. When the membrane area is larger than the critical area, we find additional cylindrical tether solutions to the shape equations at large ring separation, and that arbitrarily large ring separations are possible. These results apply for the case of vanishing Gaussian curvature modulus; when the Gaussian curvature modulus is nonzero and the area is below the critical area, the force and the membrane tension diverge as the ring separation approaches its maximum value. We also examine the stability of our shapes and analytically show that catenoidal membranes have markedly different stability properties than their soap film counterparts.
2nd thoughts: document redistribution and knowledge export - a question of relevance?
Creators: name: Philipson, Joakim
Publisher: name: Nord I&D 2001
Year: 2024
Subjects: relevance
knowledge export
citation analysis
document redistribution
usage statistics

description: Presentation and paper on theme "Giving life to old documents" by means of usage statistics, redistribution and citation analysis.given at NordI&D 2001: 11th Nordic Conference on Information and Documentation (Reykjavik, Iceland). Original powerpoint (.ppt)  lost; slides here uploaded as series of jpg-images, also found at: http://slideplayer.com/slide/7471435/
Spin fluctuations and ferromagnetic order in two-dimensional itinerant systems with Van Hove singularities
Creators: name: Igoshev, P. A.
name: Katanin, A. A.
name: Yamase, H.
name: Irkhin, V. Yu.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The quasistatic approach is used to analyze the criterion of ferromagnetism for two-dimensional (2D) systems with the Fermi level near Van Hove (VH) singularities of the electron spectrum. It is shown that the spectrum of spin excitations (paramagnons) is positively defined when the interaction between electrons and paramagnons, determined by the Hubbard on-site repulsion U, is sufficiently large. Due to incommensurate spin fluctuations near the ferromagnetic quantum phase transition, the critical interaction Uc remains finite at VH filling and exceeds considerably its value obtained from the Stoner criterion. A comparison with the functional renormalization group results and mean-field approximation which yields a phase separation is also performed.
Magnetic field generation by the stationary accretion shock instability
Creators: name: Endeve, E.
name: Cardall, C. Y.
name: Budiardja, R. D.
name: Mezzacappa, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: By adding a weak magnetic field to a spherically symmetric fluid configuration that caricatures a stalled shock in the post-bounce supernova environment, we explore the capacity of the stationary accretion shock instability (SASI) to generate magnetic fields. The SASI develops upon perturbation of the initial condition, and the ensuing flow generates--{\em in the absence of rotation}--dynamically significant magnetic fields ($\sim 10^{15}$ G) on a time scale that is relevant for the explosion mechanism of core-collapse supernovae. We describe our model, present some recent results, and discuss their potential relevance for supernova models.
description: 5 pages, 3 figures, submitted to Journal of Physics: Conference Series, SciDAC 2008
Improvement of structural, electronic, and magnetic properties of Co$_2$MnSi thin films by He$^+$-irradiation
Creators: name: Gaier, O.
name: Hamrle, J.
name: Hillebrands, B.
name: Kallmayer, M.
name: Pörsch, P.
name: Schönhense, G.
name: Elmers, H. J.
name: Fassbender, J.
name: Gloskovskii, A.
name: Jenkins, C. A.
name: Fecher, G. H.
name: Felser, C.
name: Ikenaga, E.
name: Sakuraba, Y.
name: Tsunegi, S.
name: Oogane, M.
name: Ando, Y.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The influence of 30 keV He$^+$ ion irradiation on structural, electronic and magnetic properties of Co$_2$MnSi thin films with B2 order was investigated. It was found, that irradiation with light ions can improve the local chemical order. This provokes changes of the electronic structure and element-specific magnetization towards the bulk properties of the well-ordered Co$_2$MnSi Heusler compound with L2$_1$ structure.
description: 4 pages, 4 figures
Closing the Neutrino "BSM Gap": Physics Potential of Atmospheric Through-Going Muons at DUNE
Creators: name: Schneider, Austin
name: Skrzypek, Barbara
name: Argüelles, Carlos A.
name: Conrad, Janet M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Many Beyond-Standard Model physics signatures are enhanced in high-energy neutrino interactions. To explore these signatures, ultra-large Cherenkov detectors such as IceCube exploit event samples with charged current muon neutrino interactions > 1 TeV. Most of these interactions occur below the detector volume, and produce muons that enter the detector. However, the large spacing between detectors leads to inefficiency for measuring muons with energies below or near the critical energy of 400 GeV. In response, IceCube has built a densely instrumented region within the larger detector. This provides large samples of well-reconstructed interactions that are contained within the densely instrumented region, extending up to energies of ~50 GeV. This leaves a gap of relatively unexplored atmospheric-neutrino events with energies between 50 GeV and 1 TeV in the ultra-large detectors. In this paper we point out that interesting Beyond Standard Model signatures may appear in this energy window, and that early running of the DUNE far detectors can give insight into new physics that may appear in this range.
description: 10 pages, 9 figures, 1 table
Knots and Preons
Creators: name: Finkelstein, Robert J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is shown that the four trefoil solitons that are described by the irreducible representations D^{3/2}_{mm'} of the quantum algebra SL_q(2) (and that may be identified with the four families of elementary fermions (e,μ,τ;ν_eν_μν_τ;d,s,b;u,c,t) may be built out of three preons, chosen from two charged preons with charges (1/3,-1/3) and two neutral preons. These preons are Lorentz spinors and are described by the D^{1/2}_{mm'} representation of SL_q(2). There are also four bosonic preons described by the D^1_{mm'} and D^0_{00} representations of SL_q(2). The knotted standard theory may be replicated at the preon level and the conjectured particles are in principle indirectly observable.
description: LaTex document; 12 pages; 4 tables
Orientation-dependent Casimir force arising from highly anisotropic crystals: application to Bi2Sr2CaCu2O8+delta
Creators: name: Romanowsky, Mark B.
name: Capasso, Federico
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We calculate the Casimir interaction between parallel planar crystals of Au and the anisotropic cuprate superconductor Bi2Sr2CaCu2O8+delta (BSCCO), with BSCCO's optical axis either parallel or perpendicular to the crystal surface, using suitable generalizations of the Lifshitz theory. We find that the strong anisotropy of the BSCCO permittivity gives rise to a difference in the Casimir force between the two orientations of the optical axis, which depends on distance and is of order 10-20% at the experimentally accessible separations 10 to 5000 nm.
description: 5 pages, 3 figures. Accepted for publication in Physical Review A
Literary problems during the War of Resistance as viewed from Yan’an : a study of the literature page of Liberation daily, May 16, 1941 to August 31, 1942
Creators: name: Rubin, Kyna Ellen
Publisher: name: University of British Columbia
Year: 2010

description: Chinese writers since May Fourth, 1919, have encountered many problems in their writing, some of which have been universal, some of which have been particular to China. The War of Resistance against Japan (1937-1945) presented further, more particular dilemmas for all modern Chinese writers regardless of political affiliation or geographic location. Urban writers sympathetic to the revolutionary cause of the Chinese Communist Party who went to the wartime capital of Yan'an met additional difficulties. While many of these problems were shared by writers in other areas, some arose from the unique geographical, political, and social environment of the base regions, i.e., the areas under Communist control. This thesis is a study of the problems for writers in Yan'an as reflected in literary issues and debates raised in the literature supplement "Wen Yi" of Liberation Daily (Jiefang Ribao), the CCP organ published in Yan'an from May 16, 1941 to March 27, 1947. The literary issues are examined over a period of fifteen months, from May, 1941 until August, 1942. They are viewed as backdrop and aftermath to the "Talks at the Yan'an Forum on Literature and Art" delivered by Mao Zedong in May of 1942. The "Talks" have functioned as the official CCP policy on literature and art since 1942. A detailed examination of the atmosphere in the Yan'an literary world leading up to May as well as a look at immediate reaction in the press to the literary directives will enhance our understanding of the "Talks" and help place them in proper historical context. It is hoped in the end that this thesis may show that many of the problems for writers discussed in the "Talks" in 1942 had already existed fox over twenty years prior to the May Forum. Therefore, one cannot merely blame CCP literary policies for the lack of outstanding literary creativity in modern China.
A 1200-micron MAMBO survey of the GOODS-N field: a significant population of submillimetre drop-out galaxies
Creators: name: Greve, T. R.
name: Pope, A.
name: Scott, D.
name: Ivison, R. J.
name: Borys, C.
name: Conselice, C. J.
name: Bertoldi, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a 1200-micron image of the Great Observatories Origin Deep Survey North (GOODS-N) field, obtained with the Max Planck Millimeter Bolometer array (MAMBO) on the IRAM 30-m telescope. The survey covers a contiguous area of 287 square arcmin to a near-uniform noise level of ~0.7mJy/beam. After Bayesian flux deboosting, a total of 30 sources are recovered (>=3.5sigma). An optimal combination of our 1200-micron data and an existing 850-micron image from the Submillimetre Common-User Bolometer Array (SCUBA) yielded 33 sources (>=4sigma). We combine our GOODS-N sample with those obtained in the Lockman Hole and ELAIS-N2 fields (Scott et al. 2002; Greve et al. 2004) in order to explore the degree of overlap between 1200-micron- and 850-micron-selected galaxies (hereafter SMGs), finding no significant difference between their 850-micron to 1200-micron flux density distributions. However, a noise-weighted stacking analysis yields a significant detection of the 1200-micron-blank SCUBA sources, whereas no significant 850-micron signal is found for the 850-micron-blank MAMBO sources. The hypothesis that the 850/1200-micron flux density distribution of SCUBA sources is also representative of the MAMBO population is rejected at the ~4sigma level, via Monte Carlo simulations. Therefore, although the populations overlap, galaxies selected at 850 and 1200micron are different, and there is compelling evidence for a significant 1200-micron-detected population which is not recovered at 850micron. These are submm drop-outs (SDOs), with S_850/S_1200 = 0.7-1.7, requiring very cold dust or unusual spectral energy distributions (T_d ~ 10K; beta ~ 1), unless SDOs reside beyond the redshift range observed for radio-identified SMGs, i.e. at z > 4.
description: (19 pages, 12 figures, accepted for publication in MNRAS)
Inclusion and Exclusion Criteria in Software Engineering Tertiary Studies: A Systematic Mapping and Emerging Framework
Creators: name: Costal, Dolors
name: Farré, Carles
name: Franch, Xavier
name: Quer, Carme
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Context: Tertiary studies in software engineering (TS@SE) are widely used to synthesise evidence on a research topic systematically. As part of their protocol, TS@SE define inclusion and exclusion criteria (IC/EC) aimed at selecting those secondary studies (SS) to be included in the analysis. Aims: To provide a state of the art on the definition and application of IC/EC in TS@SE, and from the results of this analysis, we outline an emerging framework, TSICEC, to be used by SE researchers. Method: To provide the state of the art, we conducted a systematic mapping (SM) combining automatic search and snowballing over the body of SE scientific literature, which led to 50 papers after application of our own IC/EC. The extracted data was synthesised using content analysis. The results were used to define a first version of TSICEC. Results: The SM resulted in a coding schema, and a thorough analysis of the selected papers on the basis of this coding. Our TSICEC framework includes guidelines for the definition of IC/EC in TS@SE. Conclusion: This paper is a step forward establishing a foundation for researchers in two ways. As authors, understanding the different possibilities to define IC/EC and apply them to select SS. As readers, having an instrument to understand the methodological rigor upon which TS@SE may claim their findings.
The initial momentum dependence of the quantum resonance in the delta-kicked rotor
Creators: name: Currivan, J-A.
name: Ullah, A.
name: Hoogerland, M. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The influence of an initial momentum on the appearance of "quantum resonances" in the delta-kicked rotor system is explored experimentally. We show that for certain initial momenta, a resonance can be negated entirely, whereas at others a resonance can be made to appear. At a larger number of kicks, all resonances are shown to narrow. We show that as a consequence, the individual "diffraction peaks" may split. We compare our results to numerical simulations as well as analytical theory.
description: 7 pages, 5 figures
Report of the Detailed Calculation of the Effective Potential in Spacetimes with $S^1\times R^d$ Topology and at Finite Temperature
Creators: name: Oikonomou, V. K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we review the calculations that are needed to obtain the bosonic and fermionic effective potential at finite temperature and volume (at one loop). The calculations at finite volume correspond to $S^1\times R^d$ topology. These calculations appear in the calculation of the Casimir energy and of the effective potential of extra dimensional theories. In the case of finite volume corrections we impose twisted boundary conditions and obtain semi-analytic results. We mainly focus in the details and validity of the results. The zeta function regularization method is used to regularize the infinite summations. Also the dimensional regularization method is used in order to renormalize the UV singularities of the integrations over momentum space. The approximations and expansions are carried out within the perturbative limits. After the end of each section we briefly present applications associated to the calculations. Particularly the calculation of the effective potential at finite temperature for the Standard Model fields, the effective potential for warped and large extra dimensions and the topological mass creation. In the end we discuss on the convergence and validity of one of the obtained semi-analytic results.
description: Version published in Reviews in Mathematical Physics
Dark matter annihilation at cosmological redshifts: possible relic signal from annihilation of weakly interacting massive particles
Creators: name: Baushev, Anton N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the possibility to observe the products of dark matter annihilation that was going on in the early Universe. Of all the particles that could be generated by this process we consider only photons, as they are both uncharged and easily detectable. The earlier the Universe was, the higher the dark matter concentration $n$ and the annihilation rate (proportional to $n^2$) were. However, the emission from the very early Universe cannot reach us because of the opacity. The main part of the signal was generated at the moment the Universe had just become transparent for the photons produced by the annihilation. Thus, the dark matter annihilation in the early Universe should have created a sort of relic emission. We obtain its flux and the spectrum. If weakly interacting massive particles (WIMPs) constitute dark matter, it is shown that we may expect an extragalactic gamma-ray signal in the energy range 0.5 - 20 {MeV} with a maximum near 8 {MeV}. We show that an experimentally observed excess in the gamma-ray background at 0.5 - 20 {MeV} could be created by the relic WIMPs annihilation only if the dark matter structures in the universe had appeared before the universe became transparent for the annihilation products ($z \simeq 300$). We discuss in more detail physical conditions whereby this interpretation could be possible.
description: 8 pages, 3 figures
Computational Design of Microarchitected Flow-Through Electrodes for Energy Storage
Creators: name: Beck, Victor A.
name: Wong, Jonathan J.
name: Jekel, Charles F.
name: Tortorelli, Daniel A.
name: Baker, Sarah E.
name: Duoss, Eric B.
name: Worsley, Marcus A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Porous flow-through electrodes are used as the core reactive component across electrochemical technologies. Controlling the fluid flow, species transport, and reactive environment is critical to attaining high performance. However, conventional electrode materials like felts and papers provide few opportunities for precise engineering of the electrode and its microstructure. To address these limitations, architected electrodes composed of unit cells with spatially varying geometry determined via computational optimization are proposed. Resolved simulation is employed to develop a homogenized description of the constituent unit cells. These effective properties serve as inputs to a continuum model for the electrode when used in the negative half cell of a vanadium redox flow battery. Porosity distributions minimizing power loss are then determined via computational design optimization to generate architected porosity electrodes. The architected electrodes are compared to bulk, uniform porosity electrodes and found to lead to increased power efficiency across operating flow rates and currents. The design methodology is further used to generate a scaled-up electrode with comparable power efficiency to the bench-scale systems. The variable porosity architecture and computational design methodology presented here thus offers a novel pathway for automatically generating spatially engineered electrode structures with improved power performance.
High-angular resolution imaging of the Sunyaev-Zel'dovich effect with ALMA
Creators: name: Ueda, Shutaro
Publisher: name: Zenodo
Year: 2023

description: We have observed the Sunyaev-Zel'dovich effect (SZE) towards 4 galaxy clusters with high signal-to-noise over a wide redshift range from z=0.45 to 1.1 at 5-arcsec resolution. Measuring the Sunyaev-Zel'dovich effect (SZE) towards galaxy clusters provides us with a powerful and unique probe to explore the thermodynamic properties of the intracluster medium (ICM) and the dynamical states. The SZE results from the inverse Compton scattering of cosmic microwave background (CMB) photons by hot electrons in galaxy clusters, with the SZE signal being proportional to the pressure of the ICM. Therefore, SZE observations are complementary to X-ray observations that are highly sensitive to the electron density of the ICM. ALMA offers us to achieve first high-angular resolution and high sensitivity SZE observations of galaxy clusters, allowing us to make a direct comparison with Chandra's high-angular resolution X-ray observations. In this talk, we will present our SZE measurements for massive galaxy clusters using our combined X-rays and SZE analysis. The results include the following: (1) constraining the equation of state for gas perturbations shown in both sloshing and merging regions in RXJ1347.5-1145, (2) detecting a large amount of exceptional low-temperature ICM in the center of the Phoenix cluster, and (3) studying the dynamical states of high-z massive galaxy clusters.
Hidden gauginos of an unbroken U(1): Cosmological constraints and phenomenological prospects
Creators: name: Ibarra, A.
name: Ringwald, A.
name: Weniger, C.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study supersymmetric scenarios where the dark matter is the gaugino of an unbroken hidden U(1) which interacts with the visible world only via a small kinetic mixing with the hypercharge. Strong constraints on the parameter space can be derived from avoiding overclosure of the Universe and from requiring successful Big Bang Nucleosynthesis and structure formation. We find that for typical values of the mixing parameter, scenarios with neutralino NLSP are excluded, while scenarios with slepton NLSP are allowed when the mixing parameter lies in the range chi~O(10^(-13) - 10^(-10)). We also show that if the gravitino is the LSP and the hidden U(1) gaugino the NLSP, the bounds on the reheating temperature from long lived charged MSSM relics can be considerably relaxed and we comment on the signatures of these scenarios at future colliders. Finally, we discuss the case of an anomalously small mixing, chi<<10^(-16), where the neutralino becomes a decaying dark matter candidate, and derive constraints from gamma ray experiments.
description: 32 pages, 6 figures
The Bass and Topological Stable Ranks of $H^\infty_\R(\D)$ and $A_\R(\D)$
Creators: name: Mortini, Raymond
name: Wick, Brett D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 46E25, 46J15

description: In this note we prove that the Bass stable rank of $H^\infty_\R(\D)$ is two. This establishes the validity of a conjecture by S. Treil. We accomplish this in two different ways, one by giving a direct proof, and the other, by first showing that the topological stable rank of $H^\infty_\R(\D)$ is two. We apply these results to give new proofs of results by R. Rupp and A. Sasane stating that the Bass stable rank of $A_\R(\D)$ is two and the topological stable rank of $A_\R(\D)$ is two, settling a conjecture by the second author. We also present a $\bar\partial$-free proof of the second author's characterization of the reducible pairs in $A_\R(\D)$.
description: 19 pages, to appear in J. Reine Angew. Math
Verifying continuous-variable entanglement in finite spaces
Creators: name: Sperling, J.
name: Vogel, W.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Starting from arbitrary Hilbert spaces, we reduce the problem to verify entanglement of any bipartite quantum state to finite dimensional subspaces. Hence, entanglement is a finite dimensional property. A generalization for multipartite quantum states is also given.
description: 4 pages
Partial particle and wave information and weak duality games
Creators: name: Hillery, Mark
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Duality games are a way of looking at wave-particle duality. In these games. Alice and Bob together are playing against the House. The House specifies, at random, which of two sub-games Alice and Bob will play. One game, Ways, requires that they obtain path information about a particle going through an $N$-path interferometer and the other, Phases, requires that they obtain phase information. In general, because of wave-particle duality, Alice and Bob cannot always win the overall game. However, if the required amount of path and phase information is not too great, for example specifying a set of paths or phases, one of which is the right one, then they can always win. Here we study examples of duality games that can always be won, and develop a wave-particle duality relation expressed only in terms of mutual information to help analyze these games.
title: Regards sur la chronologie de la fin de l’âge du Fer (IIIe-Ier siècle avant J.-C.)  en Gaule non méditerranéenne (Collection "Bibracte", 22, notice)
Creators: name: Barral, Philippe
name: Fichtl, Stephan
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
Year: 2023

description: Résumé et sommaire. L'intégralité de la publication sera bientôt accessible sur OpenEdition.
Ricci-Flat and Charged Wormholes in Five Dimensions
Creators: name: Lu, H.
name: Mei, Jianwei
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We construct stationary Ricci-flat inter-universe Lorentzian wormhole solutions in all D\ge 5 dimensions that connect two flat asymptotic spacetimes. Such a solution can be viewed as the gravity dual of a string tachyon state whose linear momentum is larger than its tension. We focus our analysis on the D=5 wormholes which are not traversable for the timelike and null geodesics; however, we demonstrate that there exist accelerated timelike trajectories that traverse from one asymptotic region to the other. We further study the minimally-coupled scalar wave equation and demonstrate that the quantum tunnelling between two worlds must occur. We also obtain charged wormholes in five-dimensional supergravities. With appropriate choice of parameters, these wormholes connect AdS$_3\times S^2$ in one asymptotic region to flat Minkowskian spacetime in the other.
description: Latex, 15 pages, reorganisation of sections, expanded discussion on accelerated time trajectories and on charged wormholes, references added
Instability and control of a periodically-driven Bose-Einstein condensate
Creators: name: Creffield, C. E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate the dynamics of a Bose-Einstein condensate held in an optical lattice under the influence of a strong periodic driving potential. Studying the mean-field version of the Bose-Hubbard model reveals that the condensate becomes highly unstable when the effective intersite tunneling becomes negative. We further show how controlling the sign of the tunneling can be used as a powerful tool to manage the dispersion of an atomic wavepacket, and thus to create a pulsed atomic soliton laser.
description: 4 pages, 3 eps figures
Precision Measurement of 11Li moments: Influence of Halo Neutrons on the 9Li Core
Creators: name: Neugart, R.
name: Balabanski, D. L.
name: Blaum, K.
name: Borremans, D.
name: Himpe, P.
name: Kowalska, M.
name: Lievens, P.
name: Mallion, S.
name: Neyens, G.
name: Vermeulen, N.
name: Yordanov, D. T.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The electric quadrupole moment and the magnetic moment of the 11Li halo nucleus have been measured with more than an order of magnitude higher precision than before, |Q| = 33.3(5)mb and mu=3.6712(3)mu_N, revealing a 8.8(1.5)% increase of the quadrupole moment relative to that of 9Li. This result is compared to various models that aim at describing the halo properties. In the shell model an increased quadrupole moment points to a significant occupation of the 1d orbits, whereas in a simple halo picture this can be explained by relating the quadrupole moments of the proton distribution to the charge radii. Advanced models so far fail to reproduce simultaneously the trends observed in the radii and quadrupole moments of the lithium isotopes.
description: 4 pages, 4 figures, 1 table
MARKAZIY PARALLEL PROEKTSIYALASH VA ULARNING XOSSALARI
Creators: name: Zaxiriddinova, Shahlo
name: Ulug`murodova, Shaxlo
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqolada markaziy va parallel proektsiyalash tushunchalari, ularning asosiy xossalari va geometrik tavsiflari haqida batafsil ma'lumot berilgan. Markaziy proektsiyalashning asosiy tamoyillari va parallel proektsiyalash bilan bog‘liq bo‘lgan asosiy formulalar keltiriladi. Proektsiyalashning turli ko‘rinishlari orqali fazoviy shakllarni tasvirlash usullari ham ko‘rib chiqiladi.