cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A surprising method for polarising antiprotons
Creators: name: Walcher, Th.
name: Arenhoevel, H.
name: Aulenbacher, K.
name: Barday, R.
name: Jankowiak, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We propose a method for polarising antiprotons in a storage ring by means of a polarised positron beam moving parallel to the antiprotons. If the relative velocity is adjusted to $v/c \approx 0.002$ the cross section for spin-flip is as large as about $2 \cdot 10^{13}$ barn as shown by new QED-calculations of the triple spin-cross sections. Two possibilities for providing a positron source with sufficient flux density are presented. A polarised positron beam with a polarisation of 0.70 and a flux density of approximately $1.5 \cdot 10^{10}$/(mm$^2$ s) appears to be feasible by means of a radioactive $^{11}$C dc-source. A more involved proposal is the production of polarised positrons by pair production with circularly polarised photons. It yields a polarisation of 0.76 and requires the injection into a small storage ring. Such polariser sources can be used at low (100 MeV) as well as at high (1 GeV) energy storage rings providing a time of about one hour for polarisation build-up of about $10^{10}$ antiprotons to a polarisation of about 0.18. A comparison with other proposals show a gain in the figure-of-merit by a factor of about ten.
description: 13 pages, 8 figures; v2: minor language and signification corrections v3: (14 pages, 12 figures) major error, nonapplicable polarisation transfer cross sections replaced by the mandatory spin-flip cross sections
Izpostītā zeme. PSRS okupācijas armijas nodarītie zaudējumi Latvijas laukiem
Creators: name: Laev, Ivika
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Type IIB Flows with N=1 Supersymmetry
Creators: name: Hailu, Girma
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We write general and explicit equations which solve the supersymmetry transformations with two arbitrary complex-proportional Weyl spinors on $\mathcal{N}=1$ supersymmetric type IIB strings backgrounds with all R-R $F_1$, $F_3$, $F_5$ and NS-NS $H_3$ fluxes turned on using SU(3) structures. The equations are generalizations of the ones found for specific relations between the two spinors by Grana, Minasian, Petrini and Tomasiello in [1] and by Butti, Grana, Minasian, Petrini and Zaffaroni in [2]. The general equations allow to study systematically generic type IIB backgrounds with $\mathcal{N}=1$ supersymmetry. We then explore some specific classes of flows with constant axion, flows with constant dilaton, flows on conformally Calabi-Yau backgrounds, flows with imaginary self-dual 3-form flux, flows with constant ratio of the two spinors, the corresponding equations are written down and some of their features and relations are discussed.
description: 28 pages
Theory or practice? the search for value for money in engineering education
Creators: name: Fomunyam, Dr. Kehdinga George
Publisher: name: Mangosuthu University of Technology (MUT)
Year: 2021
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Engineering education was predicated on two sources. One on trade apprenticeship where people that are trained locally under the tutelage of someone are engaged in further studies to broaden their theoretical and practical knowledge. The other source of engineering education was within the four walls of the educational institution which has in its core natural sciences and it emphasizes specialization in a specific aspect of engineering. This study seeks to understand if value for money in engineering education is in theory or practice. Value for money is one of the measures of quality of education. Value for money as a concept that has been defined by various authors and the World Bank defined value for money as the effective, efficient, and economic use of resources, which requires the evaluation of relevant costs and benefits with the assessment of risks and of non-priced items and/or cost of life cycle. The objective of this research is to determine if the search for value for money in engineering education is a theory or practice. Findings from the study revealed that engineering education is one of foundation for the development of the society. By engineering education, the dynamics of life has been influenced and also human culture giving more substance to civilization and politics. It was also found out that value for money is not only a financial marker but it has with it various economic, social, physical dimension. In engineering education costs are expended and this this necessitates the drive for value for money. This study recommends that there is a need for better measures of value for money in engineering education and there is a need to advance knowledge on the theories of engineering to ensure relevance in this changing era.
The Ponzano-Regge cylinder and Propagator for 3d quantum gravity
Creators: name: Livine, Etera R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate the propagator of 3d quantum gravity, formulated as a discrete topological path integral. We define it as the Ponzano-Regge amplitude of the solid cylinder swept by a 2d disk evolving in time. Quantum states for a 2d disk live in the tensor products of N spins, where N is the number of holonomy insertions connecting to the disk boundary. We formulate the cylindric amplitude in terms of a transfer matrix and identify its eigen-modes in terms of spin recoupling. We show that the propagator distinguishes the subspaces with different total spin and may select the vanishing total spin sector at late time depending on the chosen cylinder boundary data. We discuss applications to quantum circuits and the possibility of experimental simulations of this 3d quantum gravity propagator.
description: 20 pages, v2: discussion clarified, to appear in Classical and Quantum Gravity
Thermodynamics of Mixtures Containing a Strongly Polar Compound. 9. Liquid-Liquid Equilibria for $ε$-CAPROLACTAM + Selected Alkanes
Creators: name: Alonso, Víctor
name: Alonso, Iván
name: Mozo, Ismael
name: González, Juan Antonio
name: de la Fuente, Isaías García
name: Cobos, José Carlos
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The coexistence curves of the liquid-liquid equilibria (LLE) for systems of -caprolactam with heptane, octane, nonane, decane or 2,2,4-trimethylpentane have been determined by the method of the critical opalescence using a laser scattering technique. All the curves show an upper critical solution temperature (UCST), have a rather horizontal top and their symmetry depends on the size of the alkane. The UCST increases almost linearly with the chain length of the n-alkane. For the octane mixture, the UCST is lower than for the solution including 2,2,4-trimethylpentane.
Jens Maceiczyk, Das russische Gebiet Kaliningrad im Schnittpunkt korrelierender Partialinteressen
Creators: name: Wörster, Peter
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Hanna Popowska-Taborska, Wiesław Borys, Leksyka kaszubska na tle słowiańskim
Creators: name: Udolph, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Breviscutaneurus breviscutatus  1894
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Breviscutaneurus
Breviscutaneurus breviscutatus

description: Breviscutaneurus breviscutatus (Bergroth), 1894
Aneurus breviscutatus Bergroth, 1894: 116. STS 3,♀: Madagascar; MHNG (coll.Fallou), MZHF. Aneurus (Breviscutaneurus) breviscutatus Jacobs 1986: 24
Breviscutaneurus breviscutatus Kormilev & Froeschner, 1987: 31
Distr.: Madagascar (Andragoloaka, Ambanja, Angovokely, Antananarive: Hoberlandt, 1963; Bezanozano: Kormilev, 1974). East Africa (Delagoa: Bergroth, 1914; Delagoa, Vallé du Pongoné, Guéngere: Hoberlandt, 1963). Sudan (Magwe: Linnavuori, 1978). South Africa (Transvaal, Cape Province, Transkei widely distributed: Jacobs, 1986)
Ref.: Bergroth, 1914 (redescr., distr.); Hoberlandt, 1957 (redescr., fig. 3,♀); 1963: 129 (distr.), Linnavuori, 1978 (distr.); Jacobs 1986 (redescr., morphology, cytogenetics, key, figs.3, ♀); Kormilev & Froeschner, 1987:31 (cat.)
Note: Jacobs (1986: 24) suspects that African and Madagascan species might constitute different species which should be verified by examination of more material from both countries.
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 47, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
A Study on the Effects of the Teaching-Learning Cycle on English Linguistic Ability Achievement of University Level Students : a Case Study of Rajabhat Maha Sarakham University
Creators: name: Narongrit Sopa
Publisher: name: Rjabhat Maha Sarakham University
Year: 2007
Subjects: Effect, English Linguistic Ability Achievement, The Teaching Learning Cycle

description: 1, 1, Rjabhat Maha Sarakham University Journal Humanities and Social Sciences
Ewa Rzetelska-Feleszko, Jerzy Duma, Językowa przeszłość Pomorza Zachodniego na podstawie nazw miejscowych
Creators: name: Udolph, Jürgen
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Brandenburgisches Namenbuch. Teil 9. Die Ortsnamen der Uckermark
Creators: name: Bily, Inge
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
การค้นหาความแตกต่างในระดับจีโนมของข้าวเจ้าหอมนิลและข้าวเจ้าหอมนิลพันธุ์กลายที่ทนทานต่อสภาวะอุณหภูมิสูงโดยใช้เทคนิค single feature polymorphism (SFP)  (Identification of Genomes Differential Between Jao Hom Nin Wild Type and Mutant Line that Tolerate to High Temperature by Using Single Feature Polymorphism (SFP))
Creators: name: กุหลาบ สีสุขกลาง
Publisher: name: Genetics Society of Thailand
Year: 2013
Subjects: single feature polymorphism (SFP), heat tolerant, heat shock protein (Hsp)

description: S1 (Special Issue 1), S.1, Thai Journal of Genetics
Thermodynamics of ketone + amine mixtures: Part II. Volumetric and speed of sound data at (293.15, 298.15 and 303.15) K for 2-propanone + dipropylamine, + dibutylamine or + triethylamine systems
Creators: name: Alonso, Iván
name: Alonso, Víctor
name: Mozo, Ismael
name: de la Fuente, Isaías García
name: González, Juan Antonio
name: Cobos, José Carlos
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Densities, $ρ$ , and speeds of sound, $u$, of 2-propanone + dipropylamine,+ dibutylamine or + triethylamine systems have been measured at (293.15, 298.15 and 303.15) K and atmospheric pressure using a vibrating tube densimeter and sound analyser Anton Paar model DSA-5000. The $ρ$ and $u$ values were used to calculate excess molar volumes, $V^{E}$, and the excess functions at 298.15 K for the thermal expansion coefficient, $α_{p}^{E}$, and for the isentropic compressibility, $κ_{S}^{E}$ at 298.15 K. $V^{E}$, $κ_{S}^{E}$ and $α_{p}^{E}$ are positive magnitudes. When replacing dipropylamine by dibutylamine or triethylamine in the studied mixtures, the excess functions increase. This may be ascribed to the interactions between unlike molecules are more important in the former solutions. From the comparison with similar data obtained for 2-propanone + aniline, + N-methylaniline, or + pyridine systems, it is concluded that interactions between unlike molecules are stronger in mixtures containing aromatic amines. Free volume effects are present in solutions with dipropyl or dibutylamine as the $V^{E}$ curves are shifted towards higher mole fractions of 2-propanone.
Cosmology Without Window Functions: Cubic Estimators for the Galaxy Bispectrum
Creators: name: Philcox, Oliver H. E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: When analyzing the galaxy bispectrum measured from spectroscopic surveys, it is imperative to account for the effects of non-uniform survey geometry. Conventionally, this is done by convolving the theory model with the the window function; however, the computational expense of this prohibits full exploration of the bispectrum likelihood. In this work, we provide a new class of estimators for the unwindowed bispectrum; a quantity that can be straightforwardly compared to theory. This builds upon the work of Philcox (2021) for the power spectrum, and comprises two parts (both obtained from an Edgeworth expansion): a cubic estimator applied to the data, and a Fisher matrix, which deconvolves the bispectrum components. In the limit of weak non-Gaussianity, the estimator is minimum-variance; furthermore, we give an alternate form based on FKP weights that is close-to-optimal and easy to compute. As a demonstration, we measure the binned bispectrum monopole of a suite of simulations both using conventional estimators and our unwindowed equivalents. Computation times are comparable, except that the unwindowed approach requires a Fisher matrix, computable in an additional $\mathcal{O}(100)$ CPU-hours. Our estimator may be straightforwardly extended to measure redshift-space distortions and the components of the bispectrum in arbitrary separable bases. The techniques of this work will allow the bispectrum to straightforwardly be included in the cosmological analysis of current and upcoming survey data.
description: 31 pages, 8 figures, accepted by Phys. Rev. D. Code available at https://github.com/oliverphilcox/BOSS-Without-Windows
Free energy calculations along entropic pathways III. Nucleation of capillary bridges and bubbles
Creators: name: Desgranges, Caroline
name: Delhommelle, Jerome
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using molecular simulation, we analyze the capillary condensation and evaporation processes for Argon confined in a cylindrical nanopore. For this purpose, we define the entropy of the adsorbed fluid as a reaction coordinate and determine the free energy associated with both processes along entropic pathways. For capillary condensation, we identify a complex free energy profile resulting from the multi-stage nature of this phenomenon. We find capillary condensation to proceed through the nucleation of a liquid bridge across the nanopore, followed by its expansion throughout the pore to give rise to the stable phase of high density. In the case of capillary evaporation, the free energy profile along the entropy pathway also exhibits different regimes, corresponding to the initial destabilization of the layered structure of the fluid followed by the formation, and subsequent expansion, of a bubble across the nanopore.
On benefits of cooperation under strategic power
Creators: name: Fiestras-Janeiro, M. Gloria
name: García-Jurado, Ignacio
name: Meca, Ana
name: Mosquera, Manuel A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computer Science and Game Theory (cs.GT)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We introduce a new model involving TU-games and exogenous structures. Specifically, we consider that each player in a population can choose an element in a strategy set and that, for every possible strategy profile, a TU-game is associated with the population. This is what we call a TU-game with strategies. We propose and characterize the maxmin procedure to map every game with strategies to a TU-game. We also study whether or not the relevant properties of TU-games are transmitted by applying the maxmin procedure. Finally, we examine two relevant classes of TU-games with strategies: airport and simple games with strategies.
A Review of $C\!P$ Violation Measurements in Charm at LHCb
Creators: name: Betti, Federico
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The LHCb experiment has been able to collect the largest sample ever produced of charm-hadron decays, performing a number of measurements of observables related to $C\!P$ violation in the charm sector. In this document, the most recent results from LHCb on the search of direct $C\!P$ violation in $D^0 \to K_s^0 K_s^0$, $D_{(s)}^+ \to h^+ π^0$ and $D_{(s)}^+ \to h^+ η$ decays are summarised, in addition to the most precise measurement of time-dependent $C\!P$ asymmetry in $D^0 \to h^+ h^-$ decays and the first observation of mass difference between neutral charm-meson eigenstates.
Symanzik's Method Applied To The Fractional Quantum Hall Edge States
Creators: name: Blasi, Alberto
name: Ferraro, Dario
name: Maggiore, Nicola
name: Magnoli, Nicodemo
name: Sassetti, Maura
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this paper we consider an abelian Chern-Simons theory with plane boundary and we show, following Symankiz's quite general approach, how the known results for edge states in the Laughlin series can be derived in a systematic way by the separability condition. Moreover we show that the conserved boundary currents find a natural and explicit interpretation in terms of the continuity equation and the Tomonaga-Luttinger commutation relation for electronic density is recovered.
description: 13 pages
In-Line Image Transformations for Imbalanced, Multiclass Computer Vision Classification of Lung Chest X-Rays
Creators: name: Ramnarine, Alexandrea K.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: 68T45

description: Artificial intelligence (AI) is disrupting the medical field as advances in modern technology allow common household computers to learn anatomical and pathological features that distinguish between healthy and disease with the accuracy of highly specialized, trained physicians. Computer vision AI applications use medical imaging, such as lung chest X-Rays (LCXRs), to facilitate diagnoses by providing second-opinions in addition to a physician's or radiologist's interpretation. Considering the advent of the current Coronavirus disease (COVID-19) pandemic, LCXRs may provide rapid insights to indirectly aid in infection containment, however generating a reliably labeled image dataset for a novel disease is not an easy feat, nor is it of highest priority when combating a global pandemic. Deep learning techniques such as convolutional neural networks (CNNs) are able to select features that distinguish between healthy and disease states for other lung pathologies; this study aims to leverage that body of literature in order to apply image transformations that would serve to balance the lack of COVID-19 LCXR data. Furthermore, this study utilizes a simple CNN architecture for high-performance multiclass LCXR classification at 94 percent accuracy.
description: 8 article pages, 4 article figures, 1 article table. 14 supplemental pages with figures
Boosting spintronics with superconductivity
Creators: name: Yang, Guang
name: Ciccarelli, Chiara
name: Robinson, Jason W. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Spintronics aims to utilize the spin degree of freedom for energy-efficient, non-volatile memory and logic devices. In this research update, we review state-of-the-art developments and new directions in charge- and spin-based memory/logic with a focus on spintronics and the fascinating potential for superconductivity to boost spin transmission via spin-polarized quasiparticles or triplet Cooper pairs.
Molecules in galaxies
Creators: name: Omont, Alain
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The main achievements, current developments and prospects of molecular studies in external galaxies are reviewed. They are put in the context of the results of several decades of studies of molecules in local interstellar medium, their chemistry and their importance for star formation. CO observations have revealed the gross structure of molecular gas in galaxies. Together with other molecules, they are among the best tracers of star formation at galactic scales. Our knowledge about molecular abundances in various local galactic environments is progressing. They trace physical conditions and metallicity, and they are closely related to dust processes and large aromatic molecules. Major recent developments include mega-masers, and molecules in Active Galactic Nuclei; millimetre emission of molecules at very high redshift; and infrared H2 emission as tracer of warm molecular gas, shocks and photodissociation regions. The advent of sensitive giant interferometers from the centimetre to sub-millimetre range, especially ALMA in the near future in the mm/submm range, will open a new area for molecular studies in galaxies and their use to trace star formation at all distances.
description: 96 pages, 11 figures
Rise of the centrist: from binary to continuous opinion dynamics
Creators: name: Baker, George A.
name: Hague, James P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We propose a model that extends the binary ``united we stand, divided we fall'' opinion dynamics of Sznajd-Weron to handle continuous and multi-state discrete opinions. Disagreement dynamics are often ignored in continuous extensions of the binary rules, so we make the most symmetric continuum extension of the binary model that can treat the consequences of agreement (debate) and disagreement (confrontation) within a population of agents. We use the continuum extension as an opportunity to develop rules for persistence of opinion (memory). Rules governing the propagation of centrist views are also examined. Monte Carlo simulations are carried out. We find that both memory effects and the type of centrist significantly modify the variance of average opinions in the large timescale limits of the models. Finally, we describe the limit of applicability for Sznajd-Weron's model of binary opinions as the continuum limit is approached. By comparing Monte Carlo results and long time-step limits, we find that the opinion dynamics of binary models are significantly different to those where agents are permitted more than 3 opinions.
Exploring variability across cooperatives: economic performance of agricultural cooperatives in northern Ethiopia
Creators: name: Sebhatu, Kifle T.
name: Gezahegn, Tafesse W.
name: Berhanu, Tekeste
name: Maertens, Miet
name: Passel, Steven Van
name: D'Haese, Marijke
name: Sebhatu, Kifle T.
name: Gezahegn, Tafesse W.
name: Berhanu, Tekeste
name: Maertens, Miet
name: Passel, Steven Van
name: D'Haese, Marijke
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: International Development
subject: agricultural cooperatives
subject: performance variability
subject: profit
subject: audit
subject: Ethiopia

description: The number of agricultural cooperatives increased quickly in Ethiopia since the 1990s. While many papers studied the impact of membership of Ethiopian cooperatives, not much is known on their performance. This study takes a cooperative-level perspective which is unique in an African context. It compares the economic performance proxied by sales revenue and profit of a wide range of agricultural cooperatives in northern Ethiopia. Data were collected from 511 agricultural cooperatives in 12 districts of Tigray. The contributing factors of the performance are analyzed with Ordinary Least Squares regression (OLS) and Heckman selection models. Our results underscore the importance of membership size, total assets, presence of conflict among members, and union membership. Chairperson characteristics and the internal organization of a cooperative seem to be less correlated to performance.
Bürgertum und bürgerliche Gesellschaft in der Slowakei 1900-1989
Creators: name: Puttkamer, Joachim Von
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Roland J. Hoffmann, Die Anfänge der Emigration aus der Tschechoslowakei nach der kommunistischen Machtergreifung vom Februar 1948 und die provisorische Aufnahme der Flüchtlinge in der Amerikanischen Besatzungszone Deutsc
Creators: name: Franzen, K. Erik
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 1999

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 48 Nr. 2 (1999)
Entanglement and fermionization of two distinguishable fermions in a strict and non strict one-dimensional space
Creators: name: Cuestas, Eloisa
name: Jiménez, Martín D.
name: Majtey, Ana P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The fermionization regime and entanglement correlations of two distinguishable harmonically confined fermions interacting via a zero-range potential is addressed. We present two alternative representations of the ground state that we associate with two different types of one-dimensional spaces. These spaces, in turn, induce different correlations between particles and thus require a suitable definition of entanglement. We find that the entanglement of the ground state is strongly conditioned by those one-dimensional space features. We also find that in the strongly attractive regime the relative ground state is a highly localized state leading to maximum entanglement. Our analysis shows that in the strongly repulsive regime the ground state changes smoothly from a superposition of Slater-like states to a finite superposition of Slaters, this lack of accessible states yields to Pauli blocking as a strong signature of fermionization. Our results indicate that entangled states could be obtained in current experiments by reaching the non-interacting regime from the interacting regime. Entangled states could also be obtained when a state is brought from the interacting regime into the strongly repulsive regime by changing the scattering length near the confinement-induced resonance. Finally, we show that the first excited state obtained in the absence of interactions and the third excited fermionized state are maximally entangled.
description: 27 pages, 6 figures
Evolutionary stage of the spectral variable BD+48 1220=IRAS 05040+4820
Creators: name: Klochkova, V. G.
name: Chentsov, E. L.
name: Tavolzhanskaya, N. S.
name: Panchuk., V. E.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Based on high-resolution observations (R=60000 and 75000), we have studied the optical spectral variability of the star BD+48 1220 (IRAS05040+4820). We have measured the equivalent widths of numerous absorption lines of neutral atoms and ions at wavelengths from 4500 to 6760 AA, as well as the corresponding radial velocities. We use model atmospheres to determine Teff=7900K, log g=0.0, microturbulence velocity xi_t=6.0, and the abundances for 16 elements. The star's metallicity differs little from the solar value: [Fe/H]=-0.10 dex. The main peculiarity of the chemical composition of the star is a large He-excess, derived from the HeI 5876 A absorption, [He/H]=+1.04, and the equally large O-excess, [O/Fe]=+0.72 dex. The C-excess is small, [C/Fe]=+0.09 dex, and the ratio [C/O]$\le$ 1. We obtained a revised relation for the light-metal abundances: [Na/Fe]=+0.87 with [Mg/Fe]=-0.31. The barium abundance is low, [Ba/Fe]=-0.84. The radial velocity of the star measured from photospheric absorption lines over three years of observations varies in the interval V_sun = -(7 - 15) km/s. Time variable differential line shifts have been revealed. The entire set of available data (the luminosity Mv~-5m, velocity V_lsr~-20 km/s, metallicity [Fe/H]=-0.10, and peculiarities of the optical spectrum and chemical composition) confirms the status of BD+48 1220 as a post-AGB star with He- and O-excesses belonging to the Galactic disk.
description: 42 pages, 7 figures, 6 tables, accepted by Astronomy Reports
Space-time waves from a collapsing universe with a gravitational attractor
Creators: name: Hernandez, Jaime Mendoza
name: Bellini, Mauricio
name: Moreno, Claudia
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a collapsing system attracted by a spherically symmetric gravitational source, with an increasing mass, that generates back-reaction effects that are the source of space-time waves. As an example, we consider an exponential collapse and the space-time waves emitted during this collapse due to the back-reaction effects, originated by geometrical deformation driven by the increment of the gravitational attracting mass during the collapse.
description: 10 pages, 2 figures
Bulge properties and dark matter content of early-type barred galaxies
Creators: name: Corsini, E. M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The dynamics of a barred galaxy depends on the pattern speed of its bar. The only direct method for measuring the pattern speed of a bar is the Tremaine-Weinberg technique. This method is best suited to the analysis of the distribution and dynamics of the stellar component. Therefore it has been mostly used for early-type barred galaxies. Most of them host a classical bulge. On the other hand, a variety of indirect methods, which are based on the analysis of the distribution and dynamics of the gaseous component, has been used to measure the bar pattern speed in late-type barred galaxies. Nearly all the measured bars are as rapidly rotating as they can be. By comparing this result with high-resolution numerical simulations of bars in dark matter halos, it is possible to conclude that these bars reside in maximal disks.
description: 4 pages. To appear in the proceedings of IAU Symposium 245 "Formation and Evolution of Galaxy Bulges", M. Bureau, E. Athanassoula, and B. Barbuy, eds
Paranadopsis Almeida & Higuti & Ferreira & Martens 2021, gen. nov.
Creators: name: Almeida, Nadiny Martins de
name: Higuti, Janet
name: Ferreira, Vitor Góis
name: Martens, Koen
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Ostracoda
Podocopida
Cyprididae
Paranadopsis

description: Paranadopsis gen. nov.
urn:lsid:zoobank.org:act: D8BF39A1-2843-4C13-9230-1AA6A3F71EE5
Type species
Paranadopsis reducta gen. et sp. nov. (here designated).
Diagnosis
As for the new tribe.
Etymology
The new genus is named after the state and the river from which it is here described, namely Paraná, and ‘ dopsis ’, referring to the stem of Cypridopsis.
Differential diagnosis
Paranadopsis gen. nov. can be distinguished from all other cypridopsine genera by the combination of the valve and limb morphology, including the strong reduction of size and chaetotaxy of segments in various limbs, especially in the A1 (see above, diagnosis of new tribe) (see Table 3).
description: Published as part of Almeida, Nadiny Martins de, Higuti, Janet, Ferreira, Vitor Góis & Martens, Koen, 2021, A new tribe, two new genera and three new species of Cypridopsinae (Crustacea, Ostracoda, Cyprididae) from Brazil, pp. 1-48 in European Journal of Taxonomy 762 on page 36, DOI: 10.5852/ejt.2021.762.1451, http://zenodo.org/record/5176858
Friederike Kind-Kovács, Jessie Labov (Hrsg.), Samizdat, Tamizdat and Beyond. Transnational Media During and After Socialism
Creators: name: Behrends, Jan C.
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2015

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 64 Nr. 2 (2015): „Aufbruch zur Demokratie?“ Aspekte einer Demokratiegeschichte Ostmitteleuropas (1918-1939)
On the vector conformal models in an arbitrary dimension
Creators: name: Asorey, Manuel
name: Rachwał, Lesław
name: Shapiro, Ilya L.
name: Silva, Wagno Cesar e
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The conventional model of the gauge vector field is invariant under the local conformal symmetry only in the four-dimensional space ($4d$). Conformal generalization to an arbitrary dimension $d$ is impossible even for the free theory, differently from scalar and fermion fields. We discuss how to overcome this restriction and eventually construct four vector conformal actions. One of these models is the particular case of the previously known conformal theory of $n$-forms and others are new, up to our knowledge. In some of these models the gauge invariance is preserved, two of the new models are described by local actions with auxiliary compensating scalar fields, and the extended version of one of these models is on shell equivalent to the last, non-analytic, purely metric version.
description: 15 pages. A few formulations made more precise, fits the version accepted in EPJP
Scaling Laws and Critical Properties for $FCC$ and $HCP$ Metals
Creators: name: Desgranges, Caroline
name: Widhalm, Leanna
name: Delhommelle, Jerome
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The determination of the critical parameters of metals has remained particularly challenging both experimentally, because of the very large temperatures involved, and theoretically, because of the many-body interactions that take place in metals. Moreover, experiments have shown that these systems exhibit an unusually strong asymmetry of their binodal. Recent theoretical work has led to new similarity laws, based on the calculation of the Zeno line and of the underlying Boyle parameters, which provided results for the critical properties of atomic and molecular systems in excellent agreement with experiments. Using the recently developed Expanded Wang-Landau (EWL) simulation method, we evaluate the grand-canonical partition function, over a wide range of conditions, for $11$ $FCC$ and $HCP$ metals ($Ag$, $Al$, $Au$, $Be$, $Cu$, $Ir$, $Ni$, $Pb$, $Pd$, $Pt$ and $Rh$), modeled with a many-body interaction potential. This allows us to calculate the binodal, Zeno line, Boyle parameters and, in turn, obtain the critical properties for these systems. We also propose two scaling laws for the enthalpy and entropy of vaporization, and identify critical exponents of $0.4$ and $1.22$ for these two laws, respectively.
Returning Images: Mandela, Marikana and the Rugged Road to the Future
Creators: name: Oboe, Annalisa
Publisher: name: Università degli  Studi di Milano
Year: 2014
Subjects: Mandela

description: It is only appropriate to begin with his face. The intense, rainbow-colored Mandela portrait that opens this issue is the work of a young Indonesian digital artist, Ihsanulhakim, who captures a serious, reflective and aged version of the South African leader. The writing on the top left of the image is a quote from Mandela’s famous reflection on death translated into Indonesian: “Death is something inevitable. When a man has done what he considers to be his duty to his people and his country, he can rest in peace”.[1]

[1] RIP Nelson Mandela © Muhammad Ihsanulhakim. I wish to thank the artist for generously allowing Altre Modernità to reproduce his work. The quote is from an interview for the documentary “Mandela”, 1994, in Nelson Mandela by Himself: The Authorised Book of Quotations © 2010 by Nelson R. Mandela and The Nelson Mandela Foundation).
description: Altre Modernità, No 12 (2014): MANDELA
Supersymmetric Leptogenesis and the Gravitino Bound
Creators: name: Giudice, G. F.
name: Mether, L.
name: Riotto, A.
name: Riva, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Supersymmetric thermal leptogenesis with a hierarchical right-handed neutrino mass spectrum requires the mass of the lightest right-handed neutrino to be heavier than about 10^9 GeV. This is in conflict with the upper bound on the reheating temperature which is found by imposing that the gravitinos generated during the reheating stage after inflation do not jeopardize successful nucleosynthesis. In this paper we show that a solution to this tension is actually already incorporated in the framework, because of the presence of flat directions in the supersymmetric scalar potential. Massive right-handed neutrinos are efficiently produced non-thermally and the observed baryon asymmetry can be explained even for a reheating temperature respecting the gravitino bound if two conditions are satisfied: the initial value of the flat direction must be close to Planckian values and the phase-dependent terms in the flat direction potential are either vanishing or sufficiently small.
description: 9 pages. References added, version for Physics Letters B
Antimicrobial Evaluation of Pyridine Calix[6]arene Derivative and its Complexation Ability with Cd(II) Ions
Creators: name: Chiraz Belhamel
name: Dahia Meridja
name: Belhamel, Kamel
Publisher: name: Zenodo
Year: 2019
Subjects: Calixarene derivative
Cd(II) ions
solvent extraction
Antimicrobial activity
Staphylococcus aureus (ATCC 6538)
Pseudomonas aeruginosa (ATCC 9027)
Aspergillus brasiliensis (ATCC 16404)
Penicillium citrinium (ATCC 9849)

description: Calixarenes are macrocyclic molecules composed of n phenolic unities linked with methylene bridges in the ortho positions. Their derivatives have been attracting much attention as interesting host compounds. These cyclic phenolic oligomers can easily be functionalized. The selectivity of calixarenes for alkali, alkaline earth and transition metal ions has led to the development of cation-selective electrodes.  In this study, pyridine calix[6]arene derivative was synthesised according to our article. The lower rim functionalization of calixarene with pyrazole has been chosen to design a moiety with the effective electron density. Oxygen and nitrogen atoms in calixarene are efficient to bind with Cd(II) ions. The synthesised calixarene derivative showed significant antimicrobial activity against Staphylococcus aureus (ATCC 6538), Pseudomonas aeruginosa (ATCC 9027), Aspergillus brasiliensis (ATCC 16404)  and Penicillium citrinium (ATCC 9849). In addition, pyridine calix[4]arene derivative ( ligand 1) has complexation ability to form 1:2 complex with Cd(II) ions.
Dynamic Exploration of Networks: from general principles to the traceroute process
Creators: name: Dall'Asta, Luca
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Networking and Internet Architecture (cs.NI)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Dynamical processes taking place on real networks define on them evolving subnetworks whose topology is not necessarily the same of the underlying one. We investigate the problem of determining the emerging degree distribution, focusing on a class of tree-like processes, such as those used to explore the Internet's topology. A general theory based on mean-field arguments is proposed, both for single-source and multiple-source cases, and applied to the specific example of the traceroute exploration of networks. Our results provide a qualitative improvement in the understanding of dynamical sampling and of the interplay between dynamics and topology in large networks like the Internet.
description: 13 pages, 6 figures
Breviscutaneurus madagascariensis
Creators: name: Heiss, Ernst
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aradidae
Breviscutaneurus
Breviscutaneurus madagascariensis

description: Breviscutaneurus madagascariensis (Hoberlandt), 1957
Aneurus madagascariensis Hoberlandt 1957: 102. HT ♀: Madagascar; MNHN (coll.Fallou) Breviscutaneurus madagascariensis Kormilev & Froeschner, 1987 Distr.: Madagascar
Ref.: Hoberlandt, 1963 (listed); Kormilev & Froeschner, 1987:31 (cat.)
description: Published as part of Heiss, Ernst, 2012, Annotated catalogue of the flat bug family Aradidae Brullé, 1836 of Madagascar and adjacent islands (Hemiptera: Heteroptera), pp. 45-63 in Zootaxa 3426 (1) on page 47, DOI: 10.11646/zootaxa.3426.1.3, http://zenodo.org/record/214110
22 Plants Poisonous to Livestock in the Western States
Creators: name: Agricultural Research Service
name: Agricultural Research Service
Publisher: name: Unknown
Year: 1968
Subjects: Livestock Production/Industries

description: Excerpts from the report: Poisonous plants cause serious livestock losses in the Western States. Each year these plants kill 3 to 5 percent of the cattle, sheep, and horses on ranges. Livestock losses from poisonous plants are particularly heavy if— Animals graze infested ranges when plants are most dangerous. Animals are driven or trailed through infested areas. Animals are not watered regularly. After very thirsty animals get water, they readily eat poisonous plants that they otherwise would avoid.
Canadian dairy regulations as a driver of foreign direct investment: the case of Saputo
Creators: name: Rude, James
name: Goddard, Ellen
name: Rude, James
name: Goddard, Ellen
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: International Development
subject: agribusiness
subject: post farm gate
subject: dairy processing
subject: acquisitions
subject: logit model

description: Across North America dairy processors are facing financial difficulties, yet a Canadian processor continues to grow through acquisitions of its competitors. This company, Saputo, grew up in a highly regulated marketplace where input raw milk supplies are restricted, input prices are inflated and imports of final product are restricted. This study asks if the Canadian system of dairy supply management prodded and assisted Saputo into making acquisitions at home and abroad. An empirical model estimates the probability of Saputo making acquisitions as a function of factors influenced by supply management and control variables accounting for Saputo’s financial performance. The results indicate that cash flows, which may be increased by regulatory rents, and a measure of restrictiveness of the Canadian milk supply, both are statistically significant positive determinants of the probability that Saputo will make an acquisition. On average over the estimation period removing the Canadian supply managed regime would reduce the probability of acquisitions by 7%. The implication is that the Canadian system is losing investment and employment opportunities by retaining its restrictive regulatory system.
Anisotropic nematic fluctuations above the ferroquadrupolar transition in TmVO$_4$
Creators: name: Wang, Z.
name: Vinograd, I.
name: Mei, Z.
name: Menegasso, P.
name: Garcia, D.
name: Massat, P.
name: Fisher, I. R.
name: Curro, N. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: TmVO$_4$ exhibits ferroquadrupolar order below 2.15 K with a well-isolated non-Kramers ground state doublet, and is a model system to understand Ising nematic order. We present $^{51}$V nuclear magnetic resonance data as a function of field orientation in a single crystal. Although the spectra are well understood in terms of direct dipolar hyperfine couplings, the spin lattice relaxation rate exhibits strong anisotropy that cannot be understood in terms of magnetic fluctuations. We find that the spin lattice relaxation rate scales with the shear elastic constant associated with the ferroquadrupole phase transition, suggesting that quadrupole (nematic) fluctuations dominate the spin lattice relaxation for in-plane fields.
description: 7 pages, 5 figures
Finite-size effects of Membranes on AdS_4 x S_7
Creators: name: Ahn, Changrim
name: Bozhilov, P.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider semi-classical solution of membranes on the AdS_4 x S^7. This is supposed to be dual to the N=6 super Chern-Simons theory with k=1 in a planar limit recently proposed by Aharony, Bergmann, Jafferis, and Maldacena (ABJM). We have identified giant magnon and single spike states on the membrane by reducing them to the Neumamm - Rosochatius integrable system. We also connect these to the complex sine-Gordon integrable model. Based on this approach, we find finite-size membrane solutions and obtain their images in the complex sine-Gordon system along with the leading finite-size corrections to the energy-charge relations.
description: References added, typos fixed, acknowledgement added; 25 pages
Winfried Müller, Swen Steinberg (Hrsg.), Menschen unterwegs. Die via regia und ihre Akteure. Essayband zur 3. Sächsischen Landesausstellung, Staatliche Kunstsammlungen Dresden, Görlitz 21. Mai bis 31. Oktober 2011
Creators: name: Henkelmann, Vera
Publisher: name: Zeitschrift für Ostmitteleuropa-Forschung
Year: 2013

description: Zeitschrift für Ostmitteleuropa-Forschung, Bd. 62 Nr. 4 (2013)
Towards all-order Laurent expansion of generalized hypergeometric functions around rational values of parameters
Creators: name: Kalmykov, Mikhail Yu.
name: Kniehl, Bernd A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Mathematical Physics (math-ph)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We prove the following theorems: 1) The Laurent expansions in epsilon of the Gauss hypergeometric functions 2F1(I_1+a*epsilon, I_2+b*epsilon; I_3+p/q + c epsilon; z), 2F1(I_1+p/q+a*epsilon, I_2+p/q+b*epsilon; I_3+ p/q+c*epsilon;z), 2F1(I_1+p/q+a*epsilon, I_2+b*epsilon; I_3+p/q+c*epsilon;z), where I_1,I_2,I_3,p,q are arbitrary integers, a,b,c are arbitrary numbers and epsilon is an infinitesimal parameter, are expressible in terms of multiple polylogarithms of q-roots of unity with coefficients that are ratios of polynomials; 2) The Laurent expansion of the Gauss hypergeometric function 2F1(I_1+p/q+a*epsilon, I_2+b*epsilon; I_3+c*epsilon;z) is expressible in terms of multiple polylogarithms of q-roots of unity times powers of logarithm with coefficients that are ratios of polynomials; 3) The multiple inverse rational sums (see Eq. (2)) and the multiple rational sums (see Eq. (3)) are expressible in terms of multiple polylogarithms; 4) The generalized hypergeometric functions (see Eq. (4)) are expressible in terms of multiple polylogarithms with coefficients that are ratios of polynomials.
description: 48 pages in LaTeX