cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hard scattering and jets--from p-p collisions in the 1970's to Au+Au collisions at RHIC
Creators: name: Tannenbaum, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Hard scattering in p-p collisions, discovered at the CERN ISR in 1972 by the method of leading particles, proved that the partons of Deeply Inelastic Scattering strongly interacted with each other. Further ISR measurements utilizing inclusive single or pairs of hadrons established that high pT particles are produced from states with two roughly back-to-back jets which are the result of scattering of constituents of the nucleons as described by Quantum Chromodynamics (QCD), which was developed during the course of these measurements. These techniques, which are the only practical method to study hard-scattering and jet phenomena in Au+Au central collisions, are reviewed, with application to measurements at RHIC.
description: 4 pages, 5 figures, Proceedings of Hard Probes 2004, International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions, Nov 4-10, 2004, to appear in EPJC
Mass limits of the extremely fast-spinning white dwarf CTCV J2056-3014
Creators: name: Otoniel, Edson
name: Coelho, Jaziel G.
name: Nunes, Sílvia P.
name: Malheiro, Manuel
name: Weber, Fridolin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: CTCV J2056--3014 is a nearby cataclysmic variable with an orbital period of approximately $1.76$ hours at a distance of about $853$ light-years from the Earth. Its recently reported X-ray properties suggest that J2056-3014 is an unusual accretion-powered intermediate polar that harbors a fast-spinning white dwarf (WD) with a spin period of $29.6$ s. The low X-ray luminosity and the relatively modest accretion rate per unit area suggest that the shock is not occurring near the WD surface. It has been argued that, under these conditions, the maximum temperature of the shock cannot be directly used to determine the mass of the WD (which, under the abovementioned assumptions, would be around $0.46$ $M_\odot$). Here, we explore the stability of this rapidly rotating WD using a modern equation of state (EoS) that accounts for electron--ion, electron--electron, and ion--ion interactions. For this EoS, we determine the mass density thresholds for the onset of pycnonuclear fusion reactions and study the impact of microscopic stability and rapid rotation on the structure and stability of WDs, considering them with helium, carbon, oxygen, and neon. From this analysis, we obtain a minimum mass for CTCV J2056--3014 of $0.56~M_\odot$ and a maximum mass of around $1.38~M_\odot$. If the mass of CTCV J2056--3014 is close to the lower mass limit, its equatorial radius would be on the order of $10^4$~km due to rapid rotation. Such a radius is significantly larger than that of a nonrotating WD of average mass ($0.6\, M_\odot$), which is on the order of $7\times 10^3$~km. The effects on the minimum mass of J2056-3014 due to changes in the temperature and composition of the stellar matter were found to be negligibly small.
description: 5 pages, 3 Figures, 2 Tables. Accepted for publication in A&A
On quantization of systems with second class constraints
Creators: name: Nuramatov, A. G.
name: Prokhorov, L. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that quantization of the dynamical systems with second class constraints actually can be reduced to quantization of the systems with first class constraints. The motion of the non-relativistic particle along the plane curve and on a surface is considered. The results coincide with those of the "thin layer method". Influence of the non-physical variables on the physical sector is demonstrated.
description: 12 pages
Additional file 1 of Correlation between anti-malarial and anti-haemozoin activities of anti-malarial compounds
Creators: name: Tam, Dao Ngoc Hien
name: Gehad Mohamed Tawfik
name: El-Qushayri, Amr Ehab
name: Ghaleb Muhammad Mehyar
name: Sedralmontaha Istanbuly
name: Karimzadeh, Sedighe
name: Vo Linh Tu
name: Tiwari, Ranjit
name: Dat, Truong Van
name: Nguyen, Phuong Thuy Viet
name: Hirayama, Kenji
name: Huy, Nguyen Tien
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Neuroscience
subject: Pharmacology
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: Ecology
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Cardiology

description: Additional file 1: Table S1. PRISMA checklist.
Corpografie multispecie: artivismo femminista e animali non umani
Creators: name: Timeto, Federica
Publisher: name: Connessioni remote. Artivismo_Teatro_Tecnologia
Year: 2021

description: In questo testo mi soffermo sulle corpografie artiviste delle artiste femministe che impiegano i corpi in modo costitutivo, cioè performativo, per scardinare i presupposti della rappresentazione tradizionale a partire da una critica della categoria di specie. Le loro azioni interferiscono con il feticismo della rappresentazione, basato sulla distanza del soggetto guardante dall’oggetto guardato, e inaugurano uno spazio di implicazione nel quale nessuno dei soggetti coinvolti, inclusi gli animali nonumani, occupa una posizione data prima dell’evento performativo. Queste artiste si muovono su un piano insieme estetico e sociale, facendo volutamente appello all’indeterminazione come risorsa politica, perché ogni soggettività emergente nelle intra-azioni performative eserciti la propria capacità di azione e di risposta.
description: Connessioni remote. Artivismo_Teatro_Tecnologia, V. 2 N. 2 (2021): L’artivismo: forme, esperienze, pratiche e teorie
Robust half-metallic antiferromagnets La$A$VOsO$_6$ and La$A$Mo$Y$O$_6$ ($A$ = Ca, Sr, Ba; $Y$ = Re, Tc) from first-principles calculations
Creators: name: Wang, Y. K.
name: Guo, G. Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have theoretically designed three families of the half-metallic (HM) antiferromagnets (AFM), namely, La$A$VOsO$_6$, La$A$MoTcO$_6$ and La$A$MoReO$_6$ ($A$ = Ca, Sr, Ba), based on a systematic {\it ab initio} study of the ordered double perovskites La$ABB'$O$_6$ with the possible $B$ and $B'$ pairs from all the 3$d$, 4$d$ and 5$d$ transtion metal elements being considered. Electronic structure calculations based on first-principles density-functional theory with generalized gradient approximation (GGA) for more than sixty double perovskites LaCa$BB'$O$_6$ have been performed using the all-electron full-potential linearized augmented-plane-wave method. The found HM-AFM state in these materials survives the full {\it ab initio} lattice constant and atomic position optimizations which were carried out using frozen-core full potential projector augmented wave method. It is found that the HM-AFM properties predicted previously in some of the double perovskites would disappear after the full structural optimizations. The AFM is attributed to both the superexchange mechanism and the generalized double exchange mechanism via the $B$ ($t_{2g}$) - O (2$p_π$) - $B'$ ($t_{2g}$) coupling and the latter is also believed to be the origin of the HM. Finally, in our search for the HM-AFMs, we find La$A$CrTcO$_6$ and La$A$CrReO$_6$ to be AFM insulators of an unconventional type in the sense that the two antiferromagnetic coupled ions consist of two different elements and that the two spin-resolved densities of states are no longer the same.
description: To appear in Phys. Rev. B
Indice - Connessioni Remote n. 2 - 02/2021
Creators: name: Sansone, Vincenzo
Publisher: name: Connessioni remote. Artivismo_Teatro_Tecnologia
Year: 2021

description: Indice del numero 2 della rivista
description: Connessioni remote. Artivismo_Teatro_Tecnologia, V. 2 N. 2 (2021): L’artivismo: forme, esperienze, pratiche e teorie
RGB-D-based Framework to Acquire, Visualize and Measure the Human Body for Dietetic Treatments
Creators: name: Fuster-Guilló, Andrés
name: Azorín-López, Jorge
name: Saval-Calvo, Marcelo
name: Castillo-Zaragoza, Juan Miguel
name: Garcia-DUrso, Nahuel
name: Fisher, Robert B
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: This research aims to improve dietetic-nutritional treatment using state-of-the-art RGB-D sensors and virtual reality (VR) technology. Recent studies show that adherence to treatment can be improved using multimedia technologies. However, there are few studies using 3D data and VR technologies for this purpose. On the other hand, obtaining 3D measurements of the human body and analyzing them over time (4D) in patients undergoing dietary treatment is a challenging field. The main contribution of the work is to provide a framework to study the effect of 4D body model visualization on adherence to obesity treatment. The system can obtain a complete 3D model of a body using low-cost technology, allowing future straightforward transference with sufficient accuracy and realistic visualization, enabling the analysis of the evolution (4D) of the shape during the treatment of obesity. The 3D body models will be used for studying the effect of visualization on adherence to obesity treatment using 2D and VR devices. Moreover, we will use the acquired 3D models to obtain measurements of the body. An analysis of the accuracy of the proposed methods for obtaining measurements with both synthetic and real objects has been carried out.
Cover Story
Creators: name: Monteverdi, Anna Maria
Publisher: name: Connessioni remote. Artivismo_Teatro_Tecnologia
Year: 2021

description: La copertina del numero 2 della rivista è una rivisitazione grafica di X-8x8-X "non-profit- web-art antiportale" di Giacomo Verde, esposta come installazione interattiva il 19 novembre 1999 alla Triennale di Milano in occasione della manifestazione Techné e fortemente legato al tema dell'artivismo
description: Connessioni remote. Artivismo_Teatro_Tecnologia, V. 2 N. 2 (2021): L’artivismo: forme, esperienze, pratiche e teorie
Anomalous Hall conductivity of the holographic $\mathbb{Z}_2$ Dirac semimetals
Creators: name: Kiczek, Bartłomiej
name: Rogatko, Marek
name: Wysokiński, Karol I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The anomalous spin Hall conductivity in the holographic model of Dirac semimetals with two Dirac nodes protected by the crystal symmetry has been elaborated. Such system besides the chiral anomaly possesses another anomaly which is related to the $\mathbb{Z}_2$ topological charge of the system. The holographic model of the system contains matter action with two $U(1)$-gauge fields as well as the appropriate combination of the Chern-Simons gauge terms. We also allow for the coupling of two gauge fields {\it via} the kinetic mixing parametrised by the coupling $α$. The holographic approach in the probe limit enables us to obtain Hall conductivity. The aim of this work is to describe the phase transitions in the $\mathbb{Z}_2$ Dirac semimetals between the topologically trivial and non-trivial phases. Interestingly the anomalous Hall conductivity plays a role of the order parameter of this phase transition. The holographically found prefactor of the Hall conductivity in the topologically non-trivial phase, depends on the coupling $α$ and the Chern - Simons couplings.
description: 28 pages, 11 figures, RevTex
Power and equality : "one" meets "two" on Burns Lake Indian Reserve no. 18
Creators: name: Sam, Cecilia
Publisher: name: University of British Columbia
Year: 2009

description: This study is about the Burns Lake Indian Band's Indian Reserve No. 18 located in northwestern British Columbia. It is a case study that spans the 20th century. Through an analysis of archival documents pertaining to land loss I investigate the long term process that facilitated the alienation of land from this Indian reserve. This thesis is about borders, spatial marginality and social geography and it focuses on power and inequality. Historical records reveal the genesis of growing polarization and deteriorating social relationships evident in the clearly demarcated communities which establish the Indian reserve and the Village of Burns Lake. Theoretical perspectives informing my analysis include social construction, standpoint theory, and the sociology of storytelling. It includes postmodernist concepts of authority and power. The storytelling process sets the stage for contested history.
The topology of critical sets of some ordinary differential operators
Creators: name: Saldanha, Nicolau C.
name: Tomei, Carlos
Publisher: name: arXiv
Year: 2005
Subjects: subject: Functional Analysis (math.FA)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 34L30; 58B05; 34B15; 46T05

description: We survey recent work of Burghelea, Malta and both authors on the topology of critical sets of nonlinear ordinary differential operators. For a generic nonlinearity $f$, the critical set of the first order nonlinear operator $F_1(u)(t) = u'(t) + f(u(t))$ acting on the Sobolev space $H^1_p$ of periodic functions is either empty or ambient diffeomorphic to a hyperplane. For the second order operator $F_2(u)(t) = -u''(t) + f(u(t))$ on $H^2_D$ (Dirichlet boundary conditions), the critical set is ambient diffeomorphic to a union of isolated parallel hyperplanes. For second order operators on $H^2_p$, the critical set is not a Hilbert manifold but is still contractible and admits a normal form. The third order case is topologically far more complicated.
description: 15 pages, 4 figures
Equi-energy sampler with applications in statistical inference and statistical mechanics
Creators: name: Kou, S. C.
name: Zhou, Qing
name: Wong, Wing Hung
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistics Theory (math.ST)
subject: Astrophysics (astro-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 65C05 (Primary) 65C40, 82B80, 62F15 (Secondary)

description: We introduce a new sampling algorithm, the equi-energy sampler, for efficient statistical sampling and estimation. Complementary to the widely used temperature-domain methods, the equi-energy sampler, utilizing the temperature--energy duality, targets the energy directly. The focus on the energy function not only facilitates efficient sampling, but also provides a powerful means for statistical estimation, for example, the calculation of the density of states and microcanonical averages in statistical mechanics. The equi-energy sampler is applied to a variety of problems, including exponential regression in statistics, motif sampling in computational biology and protein folding in biophysics.
description: This paper discussed in: [math.ST/0611217], [math.ST/0611219], [math.ST/0611221], [math.ST/0611222]. Rejoinder in [math.ST/0611224]. Published at http://dx.doi.org/10.1214/009053606000000515 in the Annals of Statistics (http://www.imstat.org/aos/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Mapping of periodically poled crystals via spontaneous parametric down-conversion
Creators: name: Kitaeva, G. Kh.
name: Tishkova, V. V.
name: Naumova, I. I.
name: Penin, A. N.
name: Kang, C. H.
name: Tang, S. H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: A new method for characterization of periodically poled crystals is developed based on spontaneous parametric down-conversion. The method is demonstrated on crystals of Y:LiNbO3, Mg:Y:LiNbO3 with non-uniform periodically poled structures, obtained directly under Czochralski growth procedure and designed for application of OPO in the mid infrared range. Infrared dispersion of refractive index, effective working periods and wavelengths of OPO were determined by special treatment of frequency-angular spectra of spontaneous parametric down-conversion in the visible range. Two-dimensional mapping via spontaneous parametric down-conversion is proposed for characterizing spatial distribution of bulk quasi-phase matching efficiency across the input window of a periodically poled sample.
description: 19 pages, 6 figures
Corbon, J., Bouttier, M., Khodre, G.: La Parole de Dieu...
Creators: name: Pfisterer, Rudolf
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 17 Nr. 1 (1968): Ökumenische Rundschau, Band 17, Heft 1
Hamiltonian dynamics of doubly-foliable space-times
Creators: name: Gergely, Cecília
name: Keresztes, Zoltán
name: Gergely, László Árpád
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The 2+1+1 decomposition of space-time is useful in monitoring the temporal evolution of gravitational perturbations/waves in space-times with a spatial direction singled-out by symmetries. Such an approach based on a perpendicular double foliation has been employed in the framework of dark matter and dark energy motivated scalar-tensor gravitational theories for the discussion of the odd sector perturbations of spherically symmetric gravity. For the even sector however the perpendicularity has to be suppressed in order to allow for suitable gauge freedom, recovering the 10th metric variable. The 2+1+1 decomposition of the Einstein-Hilbert action leads to the identification of the canonical pairs, the Hamiltonian and momentum constraints. Hamiltonian dynamics is then derived via Poisson brackets.
description: 7 pages, 1 figure, this article belongs to the Special Issue BGL2017: 10th Bolyai-Gauss-Lobachevsky Conference on Non-Euclidean Geometry and Its Applications
Insights into Performance Fitness and Error Metrics for Machine Learning
Creators: name: Naser, M. Z.
name: Alavi, Amir
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Machine learning (ML) is the field of training machines to achieve high level of cognition and perform human-like analysis. Since ML is a data-driven approach, it seemingly fits into our daily lives and operations as well as complex and interdisciplinary fields. With the rise of commercial, open-source and user-catered ML tools, a key question often arises whenever ML is applied to explore a phenomenon or a scenario: what constitutes a good ML model? Keeping in mind that a proper answer to this question depends on a variety of factors, this work presumes that a good ML model is one that optimally performs and best describes the phenomenon on hand. From this perspective, identifying proper assessment metrics to evaluate performance of ML models is not only necessary but is also warranted. As such, this paper examines a number of the most commonly-used performance fitness and error metrics for regression and classification algorithms, with emphasis on engineering applications.
description: 18 pages, 2 tables
Quasiperiodic Floquet-Thouless energy pump
Creators: name: Nathan, Frederik
name: Ge, Rongchun
name: Gazit, Snir
name: Rudner, Mark S.
name: Kolodrubetz, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent work [M. H. Kolodrubetz et al, PRL 120, 150601] has demonstrated that periodically driven one-dimensional fermionic systems can support quantized energy pumping resulting from an adiabatic modulation of a second parameter. In this work, we explore this topological Floquet-Thouless energy pump in the quasiperiodic driving regime where the parametric driving occurs at finite frequency. We show that quantization of energy pumping persists for finite ramping frequencies, as long as they are incommensurate with the driving frequency, and the system remains localized by spatial disorder. Thus, the topological Floquet-Thouless energy pump is stable beyond the adiabatic regime, occupying a finite region of parameter space. Phase transitions away from these topological phases are accompanied by delocalization in position space, photon number (energy) space, or both. Using a dimensional reduction scheme, we demonstrate that a related phase can be realized with a cavity-qubit system driven by two incommensurate modes.
XXI Международная научно-практическая конференция «Вызовы современности и стратегии развития общества в условиях новой реальности»
Creators: name: ООО "Институт развития образования и консалтинга"
Publisher: name: ООО "Институт развития образования и консалтинга"
Year: 2024

description: XXI Международная научно-практическая конференция «Вызовы современности и стратегии развития общества в условиях новой реальности»
Internal modes of oscillations of topological solitons in highly dispersive media
Creators: name: Charkina, O. V.
name: Bogdan, M. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The problem of stability and spectrum of linear excitations of a soliton (kink) of the dispersive sine-Gordon and $φ^4$ - equations is solved exactly. It is shown that the total spectrum consists of a discrete set of frequencies of internal modes and a single band spectrum of continuum waves. It is indicated by numerical simulations that a translation motion of a single soliton in the highly dispersive systems is accompanied by the arising of its internal dynamics and, in some cases, creation of breathers, and always by generation of the backward radiation. It is shown numerically that a fast motion of two topological solitons leads to a formation of the bound soliton complex in the dispersive sine-Gordon system.
Poster Person IT For Digital Business - Geraldoo, Richard, Daniel
Creators: name: Sutrisna, Geraldo
name: Permadi, Richard
name: Sidarta, Daniel
Publisher: name: Zenodo
Year: 2024

description: Monochrome Key Chain

Geraldo Harold Sutrisna (112110029)

Richard Wibisono Permadi (112110055)

Daniel Setia Sidarta (112010013)
Squeezing at 946nm with periodically-poled KTiOPO_4
Creators: name: Aoki, Takao
name: Takahashi, Go
name: Furusawa, Akira
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report generation of squeezed vacuum in sideband modes of continuous-wave light at 946 nm using a periodically poled KTiOPO_4 crystal in an optical parametric oscillator. At the pump power of 250 mW, we observe the squeezing level of -5.6+/-0.1 dB and the anti-squeezing level of +12.7+/-0.1 dB. The pump power dependence of the observed squeezing/anti-squeezing levels agrees with the theoretically calculated values when the phase fluctuation of locking is taken into account.
description: 3 pages, 3 figures, submitted to Optics Letters
Modification of tensor force in \textit{p}-shell effective interaction
Creators: name: Jha, Kanhaiya
name: Kumar, Pawan
name: Sarkar, Shahariar
name: Raina, P. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In many shell model interactions, the tensor force monopole matrix elements often retain systematic trends originating in the bare tensor force. However, in the present work, we find that Isospin T = 0 tensor force monopole matrix elements of \textit{p}-shell effective interaction CK(8-16) do not share these systematic. We correct these discrepancies by modifying T = 0 tensor force two-body matrix elements (TBMEs) of CK(8-16) by the analytically calculated tensor force TBMEs. With some additional modification of single-particle energies and TBMEs, the revised effective interaction is named as CKN. The effective interaction CKN has been tested for the calculations of \textit{p}-shell nuclei of normal parity states from various physics viewpoints such as excitation spectra, electromagnetic moments, and electromagnetic and \textit{G}amow-\textit{T}eller (\textit{GT}) transitions. The obtained results are found to be satisfactory.
description: 21 pages, 10 figures, 6 tables
The gravitational-wave spectrum of a non-axisymmetric torus around a rapidly spinning black hole
Creators: name: Bromberg, Omer
name: Levinson, Amir
name: van Putten, Maurice
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The gravitational-wave spectrum emitted by a non-axisymmetric torus rotating at an angular velocity $Ω_T$, is derived in terms of a structure function representing a combination of sausage-tilt modes in the torus in the limit of an incompressible fluid. The analysis of the gravitational-wave spectrum is then applied to a model proposed recently, in which a highly magnetized torus interacts with a stellar mass, Kerr black hole via poloidal field lines that connect the torus and the horizon. The deformation of the torus results from global magnetic instabilities when the magnetic field strength inside the torus exceeds a few times $10^{15}$ Gauss. The dynamics of the system is illustrated using a non-MHD toy model. It is found that, quite generally, most of the gravitational-wave energy emitted is in the frequency range of sensitivity of LIGO and Virgo.
description: 20 pages, 5 figures
Une analyse des quantificateurs flous divers, différents, plusieurs, certain(s) et quelque(s) dans l’idiolecte de Claude Lévi-Strauss
Creators: name: Savvas, Sophia
Publisher: name: University of British Columbia
Year: 2009

description: Cette etude a une envergure bipartite: outre qu'elle se consacre aux quantificateurs flous avec une forte concentration sur certain(s), diver(s), differents(s), plusieurs et quelque(s), elle compare leurs emplois avec ceux du Dictionnaire des frequences. Avant tout, elle se veut descriptive et synchronique. Dans cette optique, elle se base sur un corpus clos, celui de l'idiolecte de l'anthropologue francais Claude Levi-Strauss. Ce corpus numerise compte dix sous-corpus d'inegale longueur, couvrant cinq decennies de la deuxieme partie du XX[sup e] siecle et totalisant 1 251 792 mots. Par ailleurs, il englobe 3872 occurrences des cinq quantificateurs flous en question. Dans un premier temps, il s'agit d'une analyse distributionnelle a laquelle s'ajoute une analyse componentielle. Nous mettrons en evidence les contextes d'apparition de chacun des cinq quantificateurs flous dans le corpus en plus de leur appliquer une batterie de tests semantiques et syntaxiques pour deceler leur fonctionnement dans la langue francaise. Pour ce qui concerne le semantisme, nous presenterons ce que d'autres linguistes tels Arrive, Gadet & Galmiche, Chevalier, Curat, Damourette & Pichon, Gondret, Grevisse, Gross, Mitterand, Riegel, Pellat & Rioul et Wilmet ont a dire a propos1 de ces cinq quantificateurs flous. Ce chemin parcouru, nous pourrons tester l'hypothese que divers, differents et plusieurs forment un sous-systeme au sein de la classe de quantificateurs flous alors que certains(s) et quelque(s) en forment un autre. La seconde partie de cette etude consiste en une analyse statistique. II s'agit d'une comparaison des frequences relatives des cinq quantificateurs flous dans le corpus de Levi-Strauss avec celles du Dictionnaire des frequences qui livre l'equivalent d'une norme de la langue: il totalise 70 317 234 mots, dont 37 653 685 relevent du XX[sup e] siecle.
PERFORMANCE MEASUREMENT INDICES ON THE BUYING BEHAVIOUR OF RAM BUYERS IN THE HIGHVELD MERINO CLUB
Creators: name: Jordaan, Daniel Du Plessis Scheepers
name: Doyer, Ockert T.
name: Poonyth, Daneswar
name: Jordaan, Daniel Du Plessis Scheepers
name: Doyer, Ockert T.
name: Poonyth, Daneswar
Publisher: name: Unknown
Year: 2002
Subjects: Livestock Production/Industries

description: Merino rams are an important input in the Merino breeder's production process. Breeders need to make informed decisions when buying rams because of the influence that the ram will have on the characteristics of the herd, especially with regards to the characteristics of the animal that are deemed economically important. Before the advent of performance testing through objective measurement a system of subjective evaluation was used to determine the breeding value of Merino rams. The use of the subjective system of evaluation seemingly continues and the prevalence of this system of evaluation raises the question to what extent ram buyers are using performance measurement indices in aiding them in their buying decision. This study finds that performance measurements supplied to buyers are indeed used to determine the economic value of an animal. These performance measurements are, however, only responsible for determining a small proportion of the economic value of an animal.
БРОНХИАЛ АСТМА БИЛАН ОҒРИГАН БЕМОРЛАРДА ҚАЛҚОНСИМОН БЕЗ КАТТАЛАШУВИНИ БАҲОЛАШ
Creators: name: Шагазатова, Б.Х.
name: Мирхайдарова, Ф.С.
name: Нишонова, Д.Ф.
Publisher: name: Zenodo
Year: 2024

description: Ушбу тадқиқот ишида муаллифлар томонидан бронхиал астма билан оғриган беморларда қалқонсимон без ўлчамлари аниқланган ва баҳоланган. Тадқиқотлар натижасида бронхиал астма билан оғриган беморларда қалқонсимон безнинг аутоиммун касалликлари орасида аутоиммун тиреоидит кўп учраши, улар орасида аёл жинси вакиллари устунлик қилиши ва қалқонсимон без катталашувининг 1-даражаси кўп учраши аниқланган.
IS AGRICULTURAL SECTOR GROWTH A PRECONDITION FOR ECONOMIC GROWTH? THE CASE OF SOUTH AFRICA
Creators: name: Poonyth, Daneswar
name: Hassan, Rashid M.
name: Kirsten, Johann F.
name: Calcaterra, M.
name: Poonyth, Daneswar
name: Hassan, Rashid M.
name: Kirsten, Johann F.
name: Calcaterra, M.
Publisher: name: Unknown
Year: 2001
Subjects: International Development

description: In this paper a simple growth model is adapted to explain the effect of the agricultural sectors' growth on the non-agricultural sector. The empirical results suggest that for a 1% growth in the agricultural sector, the non-agricultural sector responds by more than 1%. The results also confirm that productivity difference exists, the non-agricultural sector being more efficient in terms of input use. The empirical results support the argument of President T. Mbeki, that South Africa should follow an "agricultural-led" growth strategy for successful development.
Spectroscopic Identification of Cool White Dwarfs in the Solar Neighbourhood
Creators: name: Kawka, Adela
name: Vennes, Stephane
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The New Luyten Two-Tenths catalog contains a large number of high-proper motion white dwarf candidates that remain to be spectroscopically confirmed. We present new spectroscopic observations as well as SDSS archival spectra of 49 white dwarf candidates which have been selected from the revised NLTT catalog of Salim & Gould 2003. Out of these, 34 are cool DA white dwarfs with temperatures ranging from approximately 5000 K up to 11690 K, and 11 are DC white dwarfs with temperatures ranging from 4300 K (NLTT 18555) up to 11000 K. Three of the DA white dwarfs also display abundances of heavy elements (NLTT 3915, NLTT 44986 and NLTT 43806) and one is a cool magnetic white dwarf (NLTT 44447) with an estimated magnetic field strength of 1.3 MG. We also present a new cool DQ white dwarf (NLTT 31347) with an estimated temperature of 6250 K. We supplement our sample with SDSS ugriz photometry for a fraction of the newly identified white dwarfs. A kinematical study of this sample of white dwarfs, characterized by proper motions ranging from 0.136 to 0.611 arcsec per yr suggest that they belong to the thin disk population.
description: Accepted for publication in ApJ, fixed typo in text
Rigorous results on the threshold network model
Creators: name: Konno, Norio
name: Masuda, Naoki
name: Roy, Rahul
name: Sarkar, Anish
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We analyze the threshold network model in which a pair of vertices with random weights are connected by an edge when the summation of the weights exceeds a threshold. We prove some convergence theorems and central limit theorems on the vertex degree, degree correlation, and the number of prescribed subgraphs. We also generalize some results in the spatially extended cases.
description: 21 pages, Journal of Physics A, in press
Generalized Unitaries and the Picard Group
Creators: name: Skeide, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L55, 46L08, 46L53

description: After discussing some basic facts about generalized module maps, we use the representation theory of the algebra of adjointable operators on a Hilbert B-module E to show that the quotient of the group of generalized unitaries on E and its normal subgroup of unitaries on E is a subgroup of the group of automorphisms of the range ideal of E in B. We determine the kernel of the canonical mapping into the Picard group of the range ideal in terms of the group of its quasi inner automorphisms. As a by-product we identify the group of bistrict automorphisms of the algebra of adjointable operators on E modulo inner automorphisms as a subgroup of the (opposite of the) Picard group.
description: minor corrections, some parts extended, this version is to appear in Proceedings of the Indian Academy of Sciences
Markov chains through semigroup graph expansions (a survey)
Creators: name: Rhodes, John
name: Schilling, Anne
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary 20M30, 60J10, Secondary 20M05, 60B15, 60C05

description: We review the recent approach to Markov chains using the Karnofksy-Rhodes and McCammond expansions in semigroup theory by the authors and illustrate them by two examples.
description: 14 pages. arXiv admin note: text overlap with arXiv:1711.10689, arXiv:1902.01042
A note on stabilization heights of fiber surfaces and the Hopf invariants
Creators: name: Tagami, Keiji
Publisher: name: arXiv
Year: 2020
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: In this paper, we focus on the Hopf invariant and give an alternative proof for the unboundedness of stabilization heights of fiber surfaces, which was firstly proved by Baader and Misev.
description: 9 pages, 3 figures
Radiation-induced zero-resistance states with resolved Landau levels
Creators: name: Mani, R. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The microwave-photoexcited high mobility GaAs/AlGaAs two-dimensional electron system exhibits an oscillatory-magnetoresistance with vanishing resistance in the vicinity of magnetic fields $B = [4/(4j+1)] B_{f}$, where $B_{f} = 2π\textit{f}m^{*}/e$, m$^{*}$ is an the effective mass, e is the charge, \textit{f} is the microwave frequency, and $j$ =1,2,3... Here, we report transport with well-resolved Landau levels, and some transmission characteristics.
description: 4 pages, 3 color figures, published version
The recurrent nuclear activity of Fornax A and its interaction with the cold gas
Creators: name: Maccagni, F. M.
name: Serra, P.
name: Murgia, M.
name: Govoni, F.
name: Morokuma-Matsui, K.
name: Kleiner, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Sensitive (noise $\sim 16\,μ$\Jyb), high-resolution ($\sim 10''$) MeerKAT observations of Fornax A show that its giant lobes have a double-shell morphology, where dense filaments are embedded in a diffuse and extended cocoon, while the central radio jets are confined within the host galaxy. The spectral radio properties of the lobes and jets of Fornax A reveal that its nuclear activity is rapidly flickering. Multiple episodes of nuclear activity must have formed the radio lobes, for which the last stopped $12$ Myr ago. More recently ($\sim 3$ Myr ago), a less powerful and short ($\lesssim 1$ Myr) phase of nuclear activity generated the central jets. The distribution and kinematics of the neutral and molecular gas in the centre give insights on the interaction between the recurrent nuclear activity and the surrounding interstellar medium.
description: 5 pages, 3 figures; proceedings of IAU Symposium No. 359, 2020 -- Galaxy Evolution and Feedback Across Different Environments
Instabilities and Insulator-Metal transitions in Half-Doped Manganites induced by Magnetic-Field and Doping
Creators: name: Cepas, O.
name: Krishnamurthy, H. R.
name: Ramakrishnan, T. V.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss the phase diagram of the two-orbital model of half-doped manganites by calculating self-consistently the Jahn-Teller (JT) distortion patterns, charge, orbital and magnetic order at zero temperature. We analyse the instabilities of these phases caused by electron or hole doping away from half-doping, or by the application of a magnetic-field. For the CE insulating phase of half-doped manganites, in the intermediate JT coupling regime, we show that there is a competition between canting of spins (which promotes mobile carriers) and polaronic self-trapping of carriers by JT defects. This results in a marked particle-hole asymmetry, with canting winning only on the electron doped side of half-doping. We also show that the CE phase undergoes a first-order transition to a ferromagnetic metallic phase when a magnetic-field is applied, with abrupt changes in the lattice distortion patterns. We discuss the factors that govern the intriguingly small scale of the transition fields. We argue that the ferromagnetic metallic phases involved have two types of charge carriers, localised and band-like, leading to an effective two-fluid model.
description: 22 pages, 28 figures
Hybrid Database for XML Resource Management
Creators: name: Lê, Nghi
Publisher: name: Zenodo
Year: 2023

description: Although XML has been used in software applications for a considerable amount of time, managing XML files is not a common skill in the realm of backend software design. This is primarily because JSON has become a more prevalent file format and is supported by numerous SQL and NoSQL databases. In this thesis, we will delve into the fundamentals and implementation of a web application that utilizes a hybrid database, with the goal of determining whether it is suitable for managing XML resources.Upon closer examination of the existing architecture, the client discovered a problem with upgrading their project. Further investigation revealed that the current approach of storing XML files in a single folder had serious flaws that could cause issues. As a result, a decision was made to revamp the entire web application, with hybrid databases being chosen as the preferred solution due to the application's XML storage concept. It is worth noting that there exists a type of database specifically designed for XML resources, known as native XML databases. However, the development team thoroughly reviewed all the requirements provided by the product owner, Niko Siltala, and assessed the compatibility of both native XML databases and hybrid databases for the new application. Based on our analysis, it was concluded that the hybrid database is the most suitable option for the project.The changes were successfully designed and implemented, and the development team determined that hybrid databases are a viable option for managing a significant number of XML file dependencies. There were no significant obstacles encountered that would hinder the use of this type of database. The advantages of using hybrid databases were observed, including streamlined XML file storage, the ability to mix XPATH/XQUERY in SQL queries, and simplified codebases.
DETERMINANTS OF COMPETITIVENESS IN THE SOUTH AFRICAN AGRO-FOOD AND FIBRE COMPLEX
Creators: name: Esterhuizen, Dirk
name: Van Rooyen, C.J.
name: D'Haese, Luc
name: Esterhuizen, Dirk
name: Van Rooyen, C.J.
name: D'Haese, Luc
Publisher: name: Unknown
Year: 2001
Subjects: Industrial Organization

description: The competitiveness of the South African agri-food and fibre complex depends upon a number of factors: technological, socio-political and economic. This paper attempts to identify and analyse such factors by using a framework of analysis proposed by Michael Porter (1990). Appropriate measures to increase competitiveness are proposed. These include: improved supply chain management, cost reduction, contractual pricing and the establishment of a clear "agribusiness development policy".
Non-Relativistic Superstrings: A New Soluble Sector of AdS_5xS^5
Creators: name: Gomis, Jaume
name: Gomis, Joaquim
name: Kamimura, Kiyoshi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We find a new sector of string theory in AdS_5xS^5 describing non-relativistic superstrings in that geometry. The worldsheet theory of non-relativistic strings in AdS_5xS^5 is derived and shown to reduce to a supersymmetric free field theory in AdS_2. Non-relativistic string theory provides a new calculable setting in which to study holography.
description: 29 pages, LATEX format
A DESCRIPTIVE ANALYSIS OF EMPLOYMENT TRENDS IN SOUTH AFRICAN AGRICULTURE
Creators: name: Vink, Nick
name: Kirsten, Johann F.
name: Vink, Nick
name: Kirsten, Johann F.
Publisher: name: Unknown
Year: 2001
Subjects: Labor and Human Capital

description: The working paper discusses the trends in farm employment over time in South Africa. This is followed by the presentation of six case studies of specific commodities and regions with the view to establishing the potential employment effects of various changes in the policy environment. The article ends with an assessment of selected aspects of the wider environment within which the sector operates, to ascertain the extent to which such policy shifts are feasible, i.e. whether the measured effects in employment generation are likely to happen.
MODELING THE SOUTH AFRICAN AGRICULTURAL PRODUCTION STRUCTURE AND FLEXIBILITY OF INPUT SUBSTITUTION
Creators: name: Poonyth, Daneswar
name: Van Zyl, Johan
name: Vink, Nick
name: Kirsten, Johann F.
name: Poonyth, Daneswar
name: Van Zyl, Johan
name: Vink, Nick
name: Kirsten, Johann F.
Publisher: name: Unknown
Year: 2001
Subjects: Industrial Organization

description: This paper evaluates the production structure of the South African agricultural sector for the period 1970-1998, using a translog function. The results show that the production structure is best represented by production technology that is Hicks-neutral and homothetic. This information is useful in evaluating the results of previous research on the structure of South African agricultural production, particularly relatively recent research on elasticities of substitution. In addition, it also provides the basis for meaningful future analysis of aspects related to the production structure of agriculture.
MANAGERIAL ABILITY AND ITS INFLUENCE ON SIZE ECONOMIES IN SOUTH AFRICAN DAIRY PRODUCTION
Creators: name: Beyers, Lindie
name: Beyers, Lindie
Publisher: name: Unknown
Year: 2001
Subjects: Farm Management
Livestock Production/Industries

description: Managerial ability, albeit an illusive concept, is related to analysis of size economies in South Africa's dairy production sector. Data from the 1997 production cost survey of 394 farms was used in econometric estimation of long run average cost (LAC) functions for different levels of (a proxy of) managerial ability. Results show that the LAC curves are U-shaped with greater economies than diseconomies of size. Also, better managers are shown to profitably produce any level of output at lower average cost per litre than other managers. In addition their optimum levels of output are between two and four times as large as firms with average or low levels of management. The better-managed enterprises are on average operating below their optimum levels, but low and average managed firms are producing output well in excess of their optima. Thus the hypothesized vertical and horizontal displacement of the LAC curve holds in the case of the South African dairy sector, as represented by the data set.
Inflation as a probe of new physics
Creators: name: Danielsson, Ulf H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we consider inflation as a probe of new physics near the string or Planck scale. We discuss how new physics can be captured by the choice of vacuum, and how this leads to modifications of the primordial spectrum as well as the way in which the universe expands during inflation. Provided there is a large number of fields contributing to the vacuum energy -- as typically is expected in string theory -- we will argue that both types of effects can be present simultaneously and be of observational relevance. Our conclusion is that the ambiguity in choice of vacuum is an interesting new parameter in serious model building.
description: 14 pages
EFFECTS OF MEAT RECALLS ON FUTURES MARKET PRICES
Creators: name: Lusk, Jayson L.
name: Schroeder, Ted C.
name: Lusk, Jayson L.
name: Schroeder, Ted C.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: meat recalls
subject: event study
subject: meat demand

description: The number of meat recalls has increased markedly in recent years. Meat recalls have the potential to adversely affect short run demand for meat because of the associated decline in consumer confidence. This research examines the impact of beef and pork recalls on nearby daily live cattle and lean hog futures market prices, respectively. Results indicate that medium sized beef and large pork recalls that are a serious health concern have a marginally negative impact on short-term live cattle and lean hog futures prices, respectively. However, results are not robust across recall size and severity. This research suggests that if there is any systematic significant change in beef and pork demand due to meat recalls, it likely occurs over an extended period of time and only in certain cases does it noticeably affect daily futures prices.