cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A numerical and experimental investigation of the impact behaviour of hybrid and multi-ply fabric structures
Creators: name: Novotny, Wesley R.
Publisher: name: University of British Columbia
Year: 2009

description: The focus of this work is to develop an understanding of the impact behaviour of singleand multi-ply fabric materials used in protective (armour) structures. Hybrid structures are also investigated to explore the effect of mixing different materials on armour system performance. Emphasis is placed on the behaviour of these systems during the early stages of the impact event prior to the return of boundary-reflected strain waves to the impact point. This allows one to separate the material response from the structural response and in so doing investigate the losses of material efficiency inherent in systems with greater areal densities. The latter can arise from increased ply count and/or greater mass per unit length of the yarns which make up the fabric. A series of ballistic impact experiments are carried out on the permutations of stacking sequences of 2- and 4-ply Kevlar Nylon hybrids. Instrumented impact tests as well as post-mortem examination are used to investigate the unique behaviour of these hybrid systems over the entire duration of the impact event. The early event behaviour of the hybrids is also characterised. The significant difference between the various hybrids tested is the increased transverse deformation of specific stacking sequences due to penetrated layers. A finite element code, TEXIM, is used to explore the response of single and multi-ply Kevlar fabric systems during the early stages of impact. The numerical results of single and multi-ply Kevlar are found to be in good agreement with the relevant experimental data. Parametric studies using the numerical model are then carried out to investigate the effect of various weave and stacking parameters. Single panels with lower areal densities (typical of panels made up of yarns with lower mass per unit length ) are found to have superior early event performance due to increased strains in the yarns. Multi-ply systems are shown to perform better in terms of the rate of energy absorption early in the impact event as the inter-ply spacing is reduced. Minimizing the spacing is shown to result in increased fibre strains and greater material involvement in absorbing the impact energy.
Charge order in photosensitive Bi0.4Ca0.6MnO3 films
Creators: name: Nelson, C. S.
name: Kolagani, R. M.
name: Overby, M.
name: Smolyaninova, V. N.
name: Kennedy, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report structural and electronic characterization of the charge order phase in Bi0.4Ca0.6MnO3 films, in which photoinduced resistivity changes have been observed at temperatures approaching room temperature. In all films, lattice distortions associated with the charge order are observed, and both the wavevectors and displacements of the distortions are in the plane of the film. Films under compressive and tensile strain are observed to have different resonant x-ray scattering characteristics-- a result that may shed light on the mechanism responsible for the photosensitivity exhibited by this material.
description: 6 pages, 5 figures, to be published in J. Phys.: Condens. Matter
nNNPDF2.0: Quark Flavor Separation in Nuclei from LHC Data
Creators: name: Khalek, Rabah Abdul
name: Ethier, Jacob J.
name: Rojo, Juan
name: van Weelden, Gijs
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a model-independent determination of the nuclear parton distribution functions (nPDFs) using machine learning methods and Monte Carlo techniques based on the NNPDF framework. The neutral-current deep-inelastic nuclear structure functions used in our previous analysis, nNNPDF1.0, are complemented by inclusive and charm-tagged cross-sections from charged-current scattering. Furthermore, we include all available measurements of W and Z leptonic rapidity distributions in proton-lead collisions from ATLAS and CMS at $\sqrt{s}=5.02$ TeV and 8.16 TeV. The resulting nPDF determination, nNNPDF2.0, achieves a good description of all datasets. In addition to quantifying the nuclear modifications affecting individual quarks and antiquarks, we examine the implications for strangeness, assess the role that the momentum and valence sum rules play in nPDF extractions, and present predictions for representative phenomenological applications. Our results, made available via the LHAPDF library, highlight the potential of high-energy collider measurements to probe nuclear dynamics in a robust manner.
description: 65 pages, 26 figures. The nNNPDF2.0 sets are available from http://nnpdf.mi.infn.it/for-users/nuclear-pdfs/
Modern Mystic Poets - Ravindranath Tagore’s Eternal vs W.B. Yeats’s Ethereal.pdf
Creators: name: Oza, Preeti
Publisher: name: figshare
Year: 2020
Subjects: Literature

description: Rabindranath Tagore and W.B.Yeats are widely respected to be the greatest poets of the 20th century. There is a history of intellectual association between the two. The long association between Rabindranath Tagore and W. B. Yeats has received many similarity analyses about these two poets. Their friendship of over thirty-seven years influenced both great men. To Yeats, Tagore represented the wisdom and dignity of the East and justified the faith that he had placed in Asian philosophy. For Tagore Yeats was the symbol of the creative energy of the West. The Tagore–Yeats relationship is iconic of Indo–Irish connections, and the Irish poet’s introductory remarks in Gitanjali are among the most-cited in academic treatises on the subject. Both the poets in their iconic poetry harp on the eternal problem of life and death. There is a good reason for this. Although like a teenage love affair, Yeats’s fascination with Tagore was intense but short-lived, it is not only a commentary on cross-cultural encounters within the British colonial world but also exemplary of Western conceptions of the Orient. This paper deliberates upon putting both the poets in the context of modern mysticism regarding their works.
Structural, electronic, elastic, power and transport properties of $β$-Ga$_2$O$_3$ from first-principles
Creators: name: Poncé, Samuel
name: Giustino, Feliciano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the structural, electronic, vibrational, power and transport properties of the $β$ allotrope of Ga$_2$O$_3$ from first-principles. We find phonon frequencies and elastic constants that reproduce the correct band ordering, in agreement with experiment. We use the Boltzmann transport equation to compute the intrinsic electron and hole drift mobility and obtain a room temperature values of 258 cm$^2$/Vs and 1.2 cm$^2$/Vs, respectively as well as 6300 cm$^2$/Vs and 13 cm$^2$/Vs at 100 K. Through a spectral decomposition of the scattering contribution to the inverse mobility, we find that multiple longitudinal optical modes of B$_u$ symmetry are responsible for the electron mobility of $β$- Ga$_2$O$_3$ but that many acoustic modes also contributes, making it essential to include all scattering processes in the calculations. Using the von Hippel low energy criterion we computed the breakdown field to be 5.8 MV/cm at room temperature yielding a Baliga's figure of merit of 1250 with respect to silicon, ideal for high-power electronics. This work presents a general framework to predictively investigate novel high-power electronic materials.
description: With respect to the published version, this version includes the correct citation to F. Macheda and N. Bonini, Phys. Rev. B 98, 201201 (2018) - Ref. [64]
Synthesis of GeS Single Crystals by vapour transport technique and its characterizations.
Creators: name: Sandip Unadkat
Publisher: name: figshare
Year: 2020
Subjects: subject: Condensed Matter Physics
subject: FOS: Physical sciences

description: This paper reports the growth of germanium monosulphide (GeS) single crystals by vapour phase technique. The single crystals obtained have been characterized by X-ray Diffraction and composition has been verified by Energy Dispersive Analysis of X-rays (EDAX). The resistivity measurement have been carried out in the temperature rang (363 to 473 K). All the experimental results have been explained.
The KMOS Lens-Amplified Spectroscopic Survey (KLASS): Kinematics and clumpiness of low-mass galaxies at cosmic noon
Creators: name: Girard, M.
name: Mason, C. A.
name: Fontana, A.
name: Dessauges-Zavadsky, M.
name: Morishita, T.
name: Amorín, R.
name: Fisher, D. B.
name: Jones, T.
name: Schaerer, D.
name: Schmidt, K. B.
name: Treu, T.
name: Vulcani, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present results from the KMOS Lens-Amplified Spectroscopic Survey (KLASS), an ESO Very Large Telescope (VLT) large program using gravitational lensing to study the spatially resolved kinematics of 44 star-forming galaxies at 0.61), we find a weak increase or flat trend. We investigate the relation between the rest-frame UV clumpiness of galaxies and their global kinematic properties. We find no clear trend between the clumpiness and the velocity dispersion and $\upsilon_{rot}/σ_0$. This could suggest that the kinematic properties of galaxies evolve after the clumps formed in the galaxy disk or that the clumps can form in different physical conditions.
description: 19 pages, 9 figures. Accepted for publication in MNRAS
Fast Simulation of Facilitated Spin Models
Creators: name: Ashton, Douglas J.
name: Hedges, Lester O.
name: Garrahan, Juan P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We show how to apply the absorbing Markov chain Monte Carlo algorithm of Novotny to simulate kinetically constrained models of glasses. We consider in detail one-spin facilitated models, such as the East model and its generalizations to arbitrary dimensions. We investigate how to maximise the efficiency of the algorithms, and show that simulation times can be improved on standard continuous time Monte Carlo by several orders of magnitude. We illustrate the method with equilibrium and aging results. These include a study of relaxation times in the East model for dimensions d=1 to d=13, which provides further evidence that the hierarchical relaxation in this model is present in all dimensions. We discuss how the method can be applied to other kinetically constrained models.
description: 8 pages, 4 figures
Automated evaluation of electroweak Sudakov logarithms in Sherpa
Creators: name: Bothmann, Enrico
name: Napoletano, Davide
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present an automated implementation for the calculation of one-loop double and single Sudakov logarithms stemming from electroweak radiative corrections within the Sherpa event generation framework, based on the derivation in[1]. At high energies, these logarithms constitute the leading contributions to the full NLO electroweak corrections. As examples, we show applications for relevant processes at both the LHC and future hadron colliders, namely on-shell W boson pair production, EW-induced dijet production and electron-positron production in association with four jets, providing the first estimate of EW corrections at this multiplicity.
description: 17 pages, 4 figures
STRUCTURAL CHARACTERIZATION OF GeS0.5Se0.5 CRYSTALS GROWN BY VAPOUR TRANSPORT TECHNIQUE
Creators: name: Sandip Unadkat
Publisher: name: figshare
Year: 2020
Subjects: subject: Condensed Matter Physics
subject: FOS: Physical sciences

description: Crystalline germanium sulphoselenide having a wide band gap has attracted many researchers due to its important properties in solar energy converters. In this paper authors present their investigation on growth of off-stochiometric single crystals of germanium sulphoselenide GeS0.5Se 0.5 by direct vapour transport technique (DVT) using two zone horizontal furnace. Stoichiometry of the grown crystals is confirmed by Energy Dispersive Analysis of X-rays (EDAX). The structural characterization was accomplished by X-ray diffraction (XRD) studies and it was found to be orthorhombic structure. Lattice parameters, Unit cell volume and X-ray density have been calculated. A study of microstructures on the grown crystals of GeS0.5Se0.5 has been made.
Evolution of density perturbations in a realistic universe
Creators: name: Demianski, Marek
name: Golda, Zdzislaw A.
name: Woszczyna, Andrzej
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Prompted by the recent more precise determination of the basic cosmological parameters and growing evidence that the matter-energy content of the universe is now dominated by dark energy and dark matter we present the general solution of the equation that describes the evolution of density perturbations in the linear approximation. It turns out that as in the standard CDM model the density perturbations grow very slowly during the radiation dominated epoch and their amplitude increases by a factor of about 4000 in the matter and later dark energy dominated epoch of expansion of the universe.
description: 19 pages, 4 figures
Atmospheric parameters of Cepheids from flux ratios with ATHOS: I. The temperature scale
Creators: name: Lemasle, B.
name: Hanke, M.
name: Storm, J.
name: Bono, G.
name: Grebel, E. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: The effective temperature is a key parameter governing the properties of a star. For stellar chemistry, it has the strongest impact on the accuracy of the abundances derived. Since Cepheids are pulsating stars, determining their effective temperature is more complicated that in the case of non-variable stars. Aims: We want to provide a new temperature scale for classical Cepheids, with a high precision and full control of the systematics. Methods: Using a data-driven machine learning technique employing observed spectra, and taking great care to accurately phase single-epoch observations, we have tied flux ratios to (label) temperatures derived using the infrared surface brightness method. Results: We identified 143 flux ratios that allow us to determine the effective temperature with a precision of a few K and an accuracy better than 150 K, which is in line with the most accurate temperature measures available to date. The method does not require a normalization of the input spectra and provides homogeneous temperatures for low- and high-resolution spectra, even at the lowest signal-to-noise ratios. Due to the lack of a dataset of sufficient sample size for Small Magellanic Cloud Cepheids, the temperature scale does not extend to Cepheids with [Fe/H] < -0.6 dex but nevertheless provides an exquisite, homogeneous means of characterizing Galactic and Large Magellanic Cloud Cepheids. Conclusions: The temperature scale will be extremely useful in the context of spectroscopic surveys for Milky Way archaeology with the WEAVE and 4MOST spectrographs. It paves the way for highly accurate and precise metallicity estimates, which will allow us to assess the possible metallicity dependence of Cepheids' period-luminosity relations and, in turn, to improve our measurement of the Hubble constant H0.
description: 16 pages, 13 figures, accepted in A&A
Moments of inertia for solids of revolution and variational methods
Creators: name: Diaz, Rodolfo A.
name: Herrera, William J.
name: Martinez, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics Education (physics.ed-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We present some formulae for the moments of inertia of homogeneous solids of revolution in terms of the functions that generate the solids. The development of these expressions exploits the cylindrical symmetry of these objects, and avoids the explicit use of multiple integration, providing an easy and pedagogical approach. The explicit use of the functions that generate the solid gives the possibility of writing the moment of inertia as a functional, which in turn allows us to utilize the calculus of variations to obtain a new insight into some properties of this fundamental quantity. In particular, minimization of moments of inertia under certain restrictions is possible by using variational methods.
description: 6 pages, 6 figures, LaTeX2e. Two paragraphs added. Minor typos corrected. Version to appear in European Journal of Physics
Illustrations of the Relativistic Conservation Law for the Center of Energy
Creators: name: Boyer, Timothy H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The relativistic conservation law involving the center of energy is reviewed and illustrated using simple examples from classical electromagnetic theory. It is emphasized that this conservation law is parallel to the conservation laws for energy, linear momentum, and energy, in arising from the generators of the Poincare group for electromagnetic theory; yet this relativistic law reflecting the continuous flow of energy goes virtually unmentioned in the text books. The illustrations here present situations both where external forces are present and are absent. The cases of a parallel plate capacitor, a flattened slip-joint solenoid, and two interacting charges are included.
description: 22 pages
Competition Policy in Malaysia
Creators: name: Lee, Cassey
name: Lee, Cassey
Publisher: name: Unknown
Year: 2004
Subjects: Industrial Organization

description: Malaysia does not have a national competition law. Competition is regulated at the sectoral level in the country. Two economic sectors have legal provisions for competition law but these have been relatively ineffectively enforced. The benefits of Malaysia's industrial policy as well as the policy reforms in regulation and trade have been compromised by the lack of a formal institution to address competition related issues. Hence, the future priority and direction of regulatory reform is obvious -- the country needs to implement a competition law and build the related institutions and capacities.
OʻZBEK XALQ MAQOLLARIDA OILAVIY QADRIYATLAR TASVIRI
Creators: name: Umirzoqova, Zarnigor
name: Raxmonqulova, Yoqutxon
Publisher: name: Zenodo
Year: 2024

description: Maqolada xalq maqollariga adabiy nuqtayi nazardan qiziqish, asar badiiyligini oshirish va til ravonligini ta'minlash uchun undan keng foydalanishdagi xususiyatlar keng tahlil etiladi. Ulardagi barcha xususiyatlar atroflicha o'rganiladi
Galaxy Morphology Network: A Convolutional Neural Network Used to Study Morphology and Quenching in $\sim 100,000$ SDSS and $\sim 20,000$ CANDELS Galaxies
Creators: name: Ghosh, Aritra
name: Urry, C. Megan
name: Wang, Zhengdong
name: Schawinski, Kevin
name: Turp, Dennis
name: Powell, Meredith C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We examine morphology-separated color-mass diagrams to study the quenching of star formation in $\sim 100,000$ ($z\sim0$) Sloan Digital Sky Survey (SDSS) and $\sim 20,000$ ($z\sim1$) Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS) galaxies. To classify galaxies morphologically, we developed Galaxy Morphology Network (GaMorNet), a convolutional neural network that classifies galaxies according to their bulge-to-total light ratio. GaMorNet does not need a large training set of real data and can be applied to data sets with a range of signal-to-noise ratios and spatial resolutions. GaMorNet's source code as well as the trained models are made public as part of this work ( http://www.astro.yale.edu/aghosh/gamornet.html ). We first trained GaMorNet on simulations of galaxies with a bulge and a disk component and then transfer learned using $\sim25\%$ of each data set to achieve misclassification rates of $\lesssim5\%$. The misclassified sample of galaxies is dominated by small galaxies with low signal-to-noise ratios. Using the GaMorNet classifications, we find that bulge- and disk-dominated galaxies have distinct color-mass diagrams, in agreement with previous studies. For both SDSS and CANDELS galaxies, disk-dominated galaxies peak in the blue cloud, across a broad range of masses, consistent with the slow exhaustion of star-forming gas with no rapid quenching. A small population of red disks is found at high mass ($\sim14\%$ of disks at $z\sim0$ and $2\%$ of disks at $z \sim 1$). In contrast, bulge-dominated galaxies are mostly red, with much smaller numbers down toward the blue cloud, suggesting rapid quenching and fast evolution across the green valley. This inferred difference in quenching mechanism is in agreement with previous studies that used other morphology classification techniques on much smaller samples at $z\sim0$ and $z\sim1$.
description: 23 pages, 12 figures; Accepted for publication in The Astrophysical Journal; Public Data Release at http://www.astro.yale.edu/aghosh/gamornet.html
OCCUPATIONAL CHOICE AND STRUCTURAL CHANGE
Creators: name: Mann, Stefan
name: Mante, Juliane
name: Mann, Stefan
name: Mante, Juliane
Publisher: name: Unknown
Year: 2004
Subjects: subject: Labor and Human Capital
subject: Occupational choices
subject: Structural change
subject: Agricultural income
subject: Research paper

description: The connection between average sectoral income, occupational choice and structural change has so far only been described vaguely for sectors dominated by small enterprises. Taking agriculture as an example, we first develop a theoretical model in which we explain the decision to take over a farm with the average agricultural household income in the past years and the number of farms with the patterns of occupational choice. We then estimate a regression in which we explain occupational choices by the sectoral income situation and rate of farm decline by earlier occupational choices. The results demonstrate that a good income situation increases the number of occupational choices in favour for farming, and that occupational choices for farming in turn slow down the decline in farm numbers.
title: Coral Research Permit Programmatic
titleType: AlternativeTitle
title: National Marine Fisheries Service Endangered Species Act Section 7 Biological Opinion And Conference Biological Opinion and Conference on the Implementation of a Program for the Issuance of Permits for Research and Enhancement Activities on Corals in the Atlantic Ocean and Caribbean Sea
Creators: name: United States. National Marine Fisheries Service. Office of Protected Resources
Publisher: name: United States. National Marine Fisheries Service. Office of Protected Resources
Year: 2025

description: OPR-2024-01894
OF FARMERS AND BUTCHERS - COMPARING THE DETERMINANTS OF EXIT IN SHRINKING SECTORS
Creators: name: Mann, Stefan
name: Mante, Juliane
name: Mann, Stefan
name: Mante, Juliane
Publisher: name: Unknown
Year: 2004
Subjects: Agribusiness
Farm Management

description: Farmers and butchers in Switzerland both operate in shrinking sectors. The number of businesses and the sectoral turnover has decreased by about 40 per cent over the last twenty years for both sectors. It is, however, an interesting question whether the determinants of exit are the same for the primary sector and the secondary and tertiary sector. A regression analysis reveals that, for farmers, a larger part of exits can be traced back to economic factors if compared to butchers. For butchers, the profit of the business is the key determinant of structural change, whereas for farms, the level of prices is an important signal factor. Interest rates influence structural change for both sectors. The study points to the importance of sector-specific research.
Relativistic Bohmian interpretation of quantum mechanics
Creators: name: Nikolic, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: I present a relativistic covariant version of the Bohmian interpretation of quantum mechanics and discuss the corresponding measurable predictions. The covariance is incoded in the fact that the nonlocal quantum potential transforms as a scalar, which is a consequence of the fact that the nonlocal wave function transforms as a scalar. The measurable predictions that can be obtained with the deterministic Bohmian interpretation cannot be obtained with the conventional interpretation simply because the conventional probabilistic interpretation does not work in the case of relativistic quantum mechanics.
description: 9 pages, revised, talk given at conference "On the Present Status of Quantum Mechanics", Mali Losinj, Croatia, September 7-9, 2005
Trade Restrictions on Farmland - a Utilitarian Analysis of Paternalistic Laws
Creators: name: Mann, Stefan
name: Mann, Stefan
Publisher: name: Unknown
Year: 2005
Subjects: International Relations/Trade

description: The aim of this paper is to approach the normative analysis of paternalistic laws. Our examples are restrictions on trade in agricultural land: a quantitative restriction in Switzerland and Germany and a fixed price range for lease land in France. We develop a normative framework from the literature and apply it to the restrictions. It shows that the quantitative restrictions apparently rest on a misunderstanding of structural change and can therefore hardly be justified, whereas the price allegation protects from information asymmetries which would lead to unfair results. Hence it can be shown that a normative analysis of paternalistic interventions can produce meaningful results.
Dynamical Transition for a class of integrable models coupled to a bath
Creators: name: Sarkar, Madhumita
name: Sengupta, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the dynamics of correlation functions of a class of $d-$dimensional integrable models coupled linearly to a fermionic or bosonic bath in the presence of a periodic drive with a square pulse protocol. It is well known that in the absence of the bath, these models exhibit a dynamical phase transition; all correlators decay to their steady state values as $n_0^{-(d+1)/2}$[$n_0^{-d/2}]$ above [below] a critical frequency $ω_c$, where $n_0$ is the number of drive cycles. We find that the presence of a linearly coupled fermionic bath which maintains integrability of the system preserves this transition. We provide a semi-analytic expression for the evolution operator for this system and use it to provide a phase diagram showing the different dynamical regimes as a function of the system-bath coupling strength and the bath parameters. In contrast, when such models are coupled to a bosonic bath which breaks integrability of the model, we find exponential decay of the correlators to their steady state. Our numerical analysis shows that this exponential decay sets in above a critical number of drive cycles $n_c$ which depends on the system-bath coupling strength and the amplitude of perturbation. Below $n_c$, the system retains the power-law behavior identical to that for the closed integrable models and the dynamical transition survives. We discuss the applicability of our results for interacting fermion systems and discuss experiments which can test our theory.
description: 12 pages,15 figures
Optical Signatures of Spin-Orbit Interaction Effects in a Parabolic Quantum Dot
Creators: name: Chakraborty, Tapash
name: Pietiläinen, Pekka
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate here that the dipole-allowed optical absorption spectrum of a parabolic quantum dot subjected to an external magnetic field reflects the inter-electron interaction effects when the spin-orbit interaction is also taken into account. We have investigated the energy spectra and the dipole-allowed transition energies for up to four interacting electrons parabolically confined, and have uncovered several novel features in those spectra that are solely due to the SO interaction.
description: 4 pages, 3 figures
INFLUENCE OF NITROGEN ON GROWTH AND YIELD OF TURNIP
Creators: name: A.A. Sadia
name: A.F. ONA
name: Tropa Taufique
name: Mehraj, H.
name: A.F.M. Jamal Uddin
Publisher: name: figshare
Year: 2020
Subjects: subject: 70601 Horticultural Crop Growth and Development
subject: FOS: Agriculture, forestry and fisheries

description: The study was conducted in the Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from November 2009 to January 2010 to study the effect of nitrogen on growth and yield of turnip. The experiment consisted of four different levels of nitrogen (N0: 0 kg N ha-1 (control); N1: 40 kg N ha-1; N2: 70 kg N ha-1 and N3: 100 kg N ha-1) with 3 replications. Data on different growth parameter and yield showed statistically significant differences among different treatment. Results showed that at 20, 30, 40, 50 DAS and at harvest, the tallest plant (11.9 cm, 22.6 cm, 34.8 cm, 58.4 cm and 60.8 cm, respectively) was recorded from N2 whereas the shortest plant (10.1 cm, 18.5 cm, 27.3 cm, 48.6 cm and 51.3 cm, respectively) was recorded from N0. The highest diameter of root (3.7 cm) and highest yield per hectare (25.8 tons) were recorded from N3 and, the lowest diameter (2.9 cm) and lowest yield (18.8 ton) were recorded from N0.
Microscopic explanation of non-Debye relaxation for heat transfer
Creators: name: Fronczak, Agata
name: Fronczak, Piotr
name: Holyst, Janusz A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We give a microscopic explanation of both Debye and non-Debye thermalization processes that have been recently reported by Gall and Kutner (Physica A 352, 347 (2005)). Due to reduction of the problem to first passage phenomena we argue that relaxation functions f(t) introduced by the authors directly correspond to survival probabilities S(t) of particles in the considered systems. We show that in the case of broken ergodicity (i.e. in the case of mirror collisions) the survival probability decays as a power law S(t)=τ/t.
description: 8 pages (elsevier style), 3 figures
Synthesis and Characterizations of GeSxSe1-x (x = 0,0.5,1) single crystals using Direct Vapour Transport Technique
Creators: name: Sandip Unadkat
Publisher: name: figshare
Year: 2020
Subjects: subject: Condensed Matter Physics
subject: FOS: Physical sciences

description: Single Crystals of GeSxSe1-x (x=0,0.5,1) have been synthesized by direct vapour transport technique. The single crystals obtained have been characterized by X-ray diffraction, Energy Dispersive Analysis of X-rays (EDAX). The Optical bandgap was determined form optical absorption studies. The result of resistance with pressure using Bridgman opposed anvil upto 8GPa at ambient temperature have been determined.
A note on BRST quantization of SU(2) Yang-Mills mechanics
Creators: name: Fuster, A.
name: van Holten, J. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The quantization of SU(2) Yang-Mills theory reduced to 0+1 space-time dimensions is performed in the BRST framework. We show that in the unitary gauge $A_0 = 0$ the BRST procedure has difficulties which can be solved by introduction of additional singlet ghost variables. In the Lorenz gauge $\dot{A}_0 = 0$ one has additional unphysical degrees of freedom, but the BRST quantization is free of the problems in the unitary gauge.
description: 17 pages
Zu Bedeutung und Herkunft von äthiopisch 'angebenay
Creators: name: Schall, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 72 (1988): Oriens christianus, Band 72
Photoelectrochemical studies of SnS Singel Crystals Grown by Vapour Phase Technique
Creators: name: Sandip Unadkat
Publisher: name: figshare
Year: 2020
Subjects: subject: Condensed Matter Physics
subject: FOS: Physical sciences

description: In this paper authors have attempted to fabricate PEC solar cells with SnS crystals grown using different transporting agents. These study justify the selection of an appropriate electrolyte for PEC work. Various solar cells fabricated with single crystals of SnS (PVT), SnS (I2), and SnS (NH4Cl) have been prepared. The solar cell parameters e.g., the fill factor (FF), Open Circuit Voltage (Voc) , Short Circuit Current (Isc) and Efficiency (n) for all the different cells have been determined.
Quantum phase transitions in matrix product systems
Creators: name: Wolf, Michael M.
name: Ortiz, Gerardo
name: Verstraete, Frank
name: Cirac, J. Ignacio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate quantum phase transitions (QPTs) in spin chain systems characterized by local Hamiltonians with matrix product ground states. We show how to theoretically engineer such QPT points between states with predetermined properties. While some of the characteristics of these transitions are familiar, like the appearance of singularities in the thermodynamic limit, diverging correlation length, and vanishing energy gap, others differ from the standard paradigm: In particular, the ground state energy remains analytic, and the entanglement entropy of a half-chain stays finite. Examples demonstrate that these kinds of transitions can occur at the triple point of `conventional' QPTs.
description: 5 pages, 1 figure
Performance of brick veneer ties under cyclic loadings
Creators: name: Wibowo, Ari
Publisher: name: University of British Columbia
Year: 2009

description: The subject of this research program was to investigate the behaviour of brick veneer ties under reversed cyclic loading. As the first step towards the performance evaluation of the behaviour of brick ties under simulated earthquake loads, tests were performed on the embedded part of brick veneer ties. Small wall elements with one veneer tie were made to represent a localized portion of a full height brick veneer wall system. Some building codes require single wire joint reinforcement in masonry veneer walls in higher seismic zones, the current investigation examined the effect of the horizontal wire joint reinforcement on the embedment performance of brick tie currently used in the Western Canada. Tests were also conducted on several different types of veneer ties available in North America for comparison purposes. One important parameter considered in the study was the effect of in-plane surcharge loads, which simulated the condition of brick ties located near the top and near the bottom support of a one story wall. The experimental study was divided into three phases. Phase I served as a pilot study to help plan the subsequent tests and to test the custom designed test apparatus for the tests. In Phase II, 18 specimens were built with one type of tie having three different conditions, which were tie only, joint reinforcement not connected to the brick ties, and joint reinforcement connected to the brick ties. Other tests were conducted using the US seismic type of ties, conventional ties and to investigate the effect of construction errors. In Phase m a modification to the connection of the tie to the horizontal wire joint reinforcement was made in order to see i f an improved performance would be achieved. Also the testing protocol was modified to investigate its influence on the tie behaviour. Evaluation of test results were based on the hysteretic curves obtained from the tests and the load displacement envelopes. Discussions are based on the comparisons of different conditions. It was observed that the peak embedment strength is influenced by the tightness of the connection of tie to the joint reinforcement. An increase in embedment strength at large displacement could be achieved with wire joint reinforcement connected to the brick ties. Overall, adding wire joint reinforcement to the brick ties only slightly influenced its embedment strength under cyclic loads.
Examining Virus Interactions with Host Serine Hydrolases in Immunometabolism
Creators: name: Stern, Tiffany
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2024
Subjects: activity-based protein profiling
hepatitis c virus
miRNA
miRNA-122
SARS-CoV-2
serine hydrolase

description: As obligatory intracellular parasites, viruses are in a constant battle with their host to establish infection. They can facilitate their propagation by modulating host immune or metabolic pathways. This modulation involves targeting various molecular factors such as microRNAs (miRNA), enzymes, or small molecules. Understanding how viruses alter the chemical makeup of a cell is crucial to identifying what pathways are being targeted, furthering our understanding of the virus life cycle, and may aid in identifying biomarkers of disease. Here, we examine host-virus interactions in the context of two viruses, hepatitis c virus (HCV) and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). First, the modulation of serine hydrolases by a pro-viral microRNA, miRNA-122, is investigated using activity-based protein profiling (ABPP). This study identifies a downstream target of miRNA-122 that is differentially activated during HCV infection which can be targeted pharmacologically to reduce HCV infectivity. Second, we apply similar techniques to identify serine hydrolase changes associated with SARS-CoV-2 infection. Results point towards enrichment of endocannabinoid metabolism which may offer an alternative therapeutic avenue for combating SARS-CoV-2 infection. Together, the work presented in this thesis provides avenues for further investigation into miRNA-122 interactions during HCV infection and endocannabinoid metabolism in SARS-CoV-2 infection.
Constraints on the metagalactic hydrogen ionization rate from the Lyman-alpha forest opacity
Creators: name: Bolton, James S.
name: Haehnelt, Martin G.
name: Viel, Matteo
name: Springel, Volker
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Understanding the sources responsible for reionizing the Universe is a key goal of observational cosmology. A discrepancy has existed between the metagalactic hydrogen ionization rate, Gamma_HI, predicted by early hydrodynamical simulations of the Lyman-alpha forest if scaled to appropriate assumptions for the IGM temperature, when compared to values predicted from the proximity effect. We present new estimates for Gamma_HI in the redshift range 2
description: 6 pages, 3 figures, to appear in IAU 199 conf. proc.: "Probing Galaxies through Quasar Absorption Lines," eds. Williams, Shu, Menard
Experimental realization of phase-controlled dynamics with hybrid digital-analog approach
Creators: name: Tao, Ziyu
name: Zhang, Libo
name: Li, Xiaole
name: Niu, Jingjing
name: Luo, Kai
name: Yi, Kangyuan
name: Zhou, Yuxuan
name: Jia, Hao
name: Liu, Song
name: Yan, Tongxing
name: Chen, Yuanzhen
name: Yu, Dapeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum simulation can be implemented in pure digital or analog ways, each with their pros and cons. By taking advantage of the universality of a digital route and the efficiency of analog simulation, hybrid digital-analog approaches can enrich the possibilities for quantum simulation. We use a unique hybrid approach to experimentally perform a quantum simulation of phase-controlled dynamics resulting from a closed-contour interaction (CCI) within certain multi-level systems in superconducting quantum circuits. Due to symmetry constraints, such systems cannot host an inherent CCI. Nevertheless, by assembling analog modules corresponding to their natural evolutions and specially designed digital modules constructed from standard quantum logic gates, we can bypass such constraints and realize an effective CCI in these systems. Based on this realization, we demonstrate a variety of related and interesting phenomena, including phase-controlled chiral dynamics, separation of chiral enantiomers, and a new mechanism to generate entangled states based on CCI.
description: 13 pages, 11 figures
INFLUENCE OF POTASH LEVELS ON GROWTH AND FLOWERING OF TUBEROSE
Creators: name: Md Ruhul Amin
name: M. Faridujjaman
name: Mehraj, H.
name: A.F. ONA
name: A.F.M. Jamal Uddin
Publisher: name: figshare
Year: 2020
Subjects: subject: 70601 Horticultural Crop Growth and Development
subject: FOS: Agriculture, forestry and fisheries

description: The experiment was conducted at the Horticultural farm of Sher-e-Bangla Agricultural University, Sher-e-Bangla Nagar, Dhaka, during the period from April, 2009 to March, 2010 to investigate the effect of potassium levels on growth, flowering and bulb yield of tuberose. The experiment consisted of four levels of potassium i.e. K0: 0, K1: 170, K2: 180 and K3: 190 kg K2O ha-1. Results showed that potash application significantly increased the number of leaves plant-1, leaf length, leaf breath, number of side shoots plant-1; and bulb and flower attributes. Significantly the highest flower (16.4 t ha-1) and bulb (22.0 t ha-1) yields were noted in K3 whereas the lowest flower (11.5 t ha-1) and bulb (17.2 t ha-1) yields were recorded in K0.
Rotation of Kepler field dwarfs and sub giants: Spectroscopic $v \sin I$ from APOGEE
Creators: name: Simonian, Gregory V. A.
name: Pinsonneault, Marc H.
name: Terndrup, Donald M.
name: van Saders, Jennifer L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We use 5,337 spectroscopic $v \sin i$ measurements of Kepler dwarfs and subgiants from the APOGEE survey to study stellar rotation trends. We find a detection threshold of 10 km/s, which allows us to explore the spindown of intermediate-mass stars leaving the main sequence, merger products, young stars, and tidally-synchronized binaries. We see a clear distinction between blue stragglers and the field turnoff in $α$-rich stars, with a sharp rapid rotation cutoff for blue stragglers consistent with the Kraft break. We also find rapid rotation and RV variability in a sample of red straggler stars, considerably cooler than the giant branch, lending credence to the hypothesis that these are active, tidally-synchronized binaries. We see clear evidence for a transition between rapid and slow rotation on the subgiant branch in the domain predicted by modern angular momentum evolution models. We find substantial agreement between the spectroscopic and photometric properties of KIC targets added by Huber et al (2014) based on 2MASS photometry. For the unevolved lower main sequence, we see the same concentration toward rapid rotation in photometric binaries as that observed in rotation period data, but at an enhanced rate. We attribute this difference to unresolved near-equal luminosity spectroscopic binaries with velocity displacements on the order of the APOGEE resolution. Among cool unevolved stars we find an excess rapid rotator fraction of 4% caused by pipeline issues with photometric binaries.
description: 30 pages, 15 figures, Accepted in The Astrophysical Journal. For a video summarizing the main results of the paper, see https://youtu.be/G2Zr_PkLO0U
About a possible 3rd order phase transition at T=0 in 4D gluodynamics
Creators: name: Li, L.
name: Meurice, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit the question of the convergence of lattice perturbation theory for a pure SU(3) lattice gauge theory in 4 dimensions. Using a series for the average plaquette up to order 10 in the weak coupling parameter beta^{-1}, we show that the analysis of the extrapolated ratio and the extrapolated slope suggests the possibility of a non-analytical power behavior of the form (1/β-1/5.7(1))^{1.0(1)}, in agreement with another analysis based on the same asumption. This would imply that the third derivative of the free energy density diverges near beta =5.7. We show that the peak in the third derivative of the free energy present on 4^4 lattices disappears if the size of the lattice is increased isotropically up to a 10^4 lattice. On the other hand, on 4 x L^3 lattices, a jump in the third derivative persists when L increases. Its location coincides with the onset of a non-zero average for the Polyakov loop. We show that the apparent contradiction at zero temperature can be resolved by moving the singularity in the complex 1/βplane. If the imaginary part of the location of the singularity Gamma is within the range 0.001< Gamma < 0.01, it is possible to limit the second derivative of P within an acceptable range without affecting drastically the behavior of the perturbative coefficients. We discuss the possibility of checking the existence of these complex singularities by using the strong coupling expansion or calculating the zeroes of the partition function.
description: 7 pages, 9 figures, contains a resolution of the main paradox and a discussion of possible checks
Unveiling the Structure and Dynamics of Red Giants with Asteroseismology
Creators: name: Basu, Sarbani
name: Hekker, Saskia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Kepler mission observed many thousands of red giants. The long time series, some as long as the mission itself, have allowed us to study red giants with unprecedented detail. Given that red giants are intrinsically luminous, and hence can be observed from very large distances, knowing the properties of red giants, in particular ages, is of immense value for studies of the formation and evolution of the Galaxy, an endeavor known as "Galactic archaeology". In this article we review what we have learned about red giants using asteroseismic data. We start with the properties of the power spectrum and move on to internal structure and dynamics of these stars; we also touch upon unsolved issues in red-giant asteroseismology and the prospects of making further progress in understanding these stars.
description: Accepted for publication in Frontiers in Astronomy and Space Sciences