cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fermionic criticality of anisotropic nodal point semimetals away from the upper critical dimension: exact $1/N_f$ exponents
Creators: name: Uryszek, Mikolaj D.
name: Krüger, Frank
name: Christou, Elliot
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the fermionic quantum criticality of anisotropic nodal point semimetals in $d = d_L + d_Q$ spatial dimensions that disperse linearly in $d_L$ dimensions, and quadratically in the remaining $d_Q$ dimensions. When subject to strong interactions, these systems are susceptible to semimetal-insulator transitions concurrent with spontaneous symmetry breaking. Such quantum critical points are described by effective field theories of anisotropic nodal fermions coupled to dynamical order parameter fields. We analyze the universal scaling in the physically relevant spatial dimensions, generalizing to a large number $N_f$ of fermion flavors for analytic control. Landau damping by gapless fermionic excitations gives rise to non-analytic self-energy corrections to the bosonic order-parameter propagator that dominate the long-wavelength behavior. We show that perturbative momentum shell RG leads to non-universal, cutoff dependent results, as it does not correctly account for this non-analytic structure. In turn, using a completely general soft cutoff formulation, we demonstrate that the correct IR scaling of the dressed bosonic propagator can be deduced by enforcing that results are independent of the cutoff scheme. Using this soft cutoff approach, we compute the exact critical exponents for anisotropic semi-Dirac fermions $(d_L=1$, $d_Q=1)$ to leading order in $1/N_f$, and to all loop orders. Applying the same method to relativistic Dirac fermions, we reproduce the critical exponents obtained by other methods, such as conformal bootstrap...
description: 21 pages, 6 figures, 1 table
Spin in quantum field theory
Creators: name: Forte, Stefano
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I introduce spin in field theory by emphasizing the close connection between quantum field theory and quantum mechanics. First, I show that the spin-statistics connection can be derived in quantum mechanics without relativity or field theory. Then, I discuss path integrals for spin without using spinors. Finally, I show how spin can be quantized in a path-integral approach, without introducing anticommuting variables.
description: 31 pages, 6 figures, latex with Springer svmult document class; typos corrected, refs 10-11 added
Ballistic Random Walk in a Random Environment with a Forbidden Direction
Creators: name: Rassoul-Agha, F.
name: Seppalainen, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60J15; 60K37; 60F17; 82D30

description: We consider a ballistic random walk in an i.i.d. random environment that does not allow retreating in a certain fixed direction. Homogenization and regeneration techniques combine to prove a law of large numbers and an averaged invariance principle. The assumptions are non-nestling and $1+\e$ (resp.\ $2+\e$) moments for the step of the walk uniformly in the environment, for the law of large numbers (resp. invariance principles). We also investigate invariance principles under fixed environments, and invariance principles for the environment-dependent mean of the walk.
title: IT Security in Production Facilities
Creators: name: Niemann, Karl-Heinz
Publisher: name: WAGO Kontakttechnik GmbH & Co. KG
Year: 2017
Subjects: subject: 330 Wirtschaft
subject: 004 Informatik

description: This document concerns IT security in production facilities. It is intended for small and medium-sized enterprises that are looking for a simple procedural model for ensuring IT security in production areas. In order to raise readers’ awareness of IT security in production facilities, security incidents are presented in section 2. It is clear that cyber attacks on production facilities in this day and age are not random, but are instead based on a targeted process. An overview of the most important standards and recommendations on the topic of “IT security in production” then follows in section 3. Section 4 develops a concept for setting up an IT security system for small and medium-sized enterprises (SMEs) on the basis of a ten-point plan. The focus is not only on technical measures, but also in particular on the most frequently neglected organizational measures. Section 5 then describes the outlook for future requirements and solutions in the context of Industry 4.0.
Nonequilibrium phase transitions and finite size scaling in weighted scale-free networks
Creators: name: Karsai, Márton
name: Juhász, Róbert
name: Iglói, Ferenc
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We consider nonequilibrium phase transitions in weighted scale-free networks, in which highly connected nodes, which are created earlier in time are partially immunized. For epidemic spreading we solve the dynamical mean-field equations and discuss finite-size scaling theory. The theoretical predictions are confronted with the results of large scale Monte Carlo simulations on the weighted Barabási-Albert network. Local scaling exponents are found different at a typical site and at a node with very large connectivity.
description: 6 pages, 5 figures
Comment on "Inconsistency of the conventional theory of superconductivity" by J.E. Hirsch
Creators: name: Basko, Denis M.
name: Whitney, Robert S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: J. E. Hirsch [EPL 130 (2020) 17006] claimed an inconsistency between thermodynamics and the theory of superconductivity. We argue that he overlooked a crucial term which determines the supercurrent dynamics and ensures energy conservation by providing an internal energy source for the Joule heating. Thermodynamic consistency is restored by restoring energy conservation. The correct dynamics is given by Maxwell's equations in the superconductor.
description: Comment (2 pages) and Supplementary Material (3 pages) in a single file. Version 2 has corrected a confusing typo above Eq. (1)
A STOCHASTIC DOMINANCE ANALYSIS OF CONTRACT GRAZING FEEDER CATTLE
Creators: name: Johnson, Frank
name: Spreen, Thomas H.
name: Hewitt, Timothy D.
name: Johnson, Frank
name: Spreen, Thomas H.
name: Hewitt, Timothy D.
Publisher: name: Unknown
Year: 1987
Subjects: Livestock Production/Industries

description: Contract grazing feeder cattle is an arrangement where cattle owned by one party graze forage produced on land owned by another party. The forage producer is paid a fixed price per pound gained. Stochastic dominance analysis is used to compare contract grazing and the more traditional system in which the same individual owns both the cattle and land.
Additional file 2 of Evaluation of the performance of algorithms mapping EORTC QLQ-C30 onto the EQ-5D index in a metastatic colorectal cancer cost-effectiveness model
Creators: name: Franken, Mira D.
name: Hond, Anne De
name: Degeling, Koen
name: Punt, Cornelis J. A.
name: Koopman, Miriam
name: Groot, Carin A. Uyl-De
name: Versteegh, Matthijs M.
name: Oijen, Martijn G. H. Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 2: Table 1. Ordered logit regression (model 4) results for QLQ-C30 domain scores on EQ-5D-3L domain. Table 2. Ordered logit regression (model 4) results for QLQ-C30 domain scores on EQ-5D-3L domain. Table 3. Ordered logit regression (model 4) results for QLQ-C30 domain scores on EQ-5D-3L domain. Table 4. Separate equations subgroup approach (model 6) results for QLQ-C30 domain scores on EQ-5D-3L utility of i)
title: Bildungsaufstieg und Resilienz
Creators: name: Casper, Miriam
Year: 2017
Subjects: subject: 370 Erziehung, Schul- und Bildungswesen
subject: 150 Psychologie

description: Das Erreichen eines höheren Bildungsstands gegenüber dem Bildungsstand der Eltern ist häufig mit einer Bewältigung von herkunftsbedingten Widerständen verbunden. Neben leistungsbezogenen Anforderungen an Bildungsaufsteiger sind häufig auch psychosoziale Anforderungen zu bewältigen, die durch einen Aufstieg in eine höhere soziale Schicht entstehen. Nachfolgend wird untersucht, ob Resilienz ein Einflussfaktor auf Bildungsaufstieg ist oder nicht. Es wurde eine Datenerhebung an 157 Studierenden der Hochschule Hannover durchgeführt. Zwischen den 77 Bildungsaufsteigern und den 80 Nichtbildungsaufsteigern dieser Stichprobe wurde kein signifikanter Unterschied hinsichtlich Resilienz gefunden. In einer Vorstudie wurde mit der Resilienzskala RS-29 die Resilienzskala RS-25 (Schumacher et al., 2005) weiterentwickelt und empirisch überprüft. Eine Datenerhebung der RS-29 an 416 Studierenden der Hochschule Hannover bestätigte drei vermutete Faktoren tendenziell.
description: Achieving a higher level of education compared to the parents' educational level often requires coping with origin-related resistances. In addition to performance-related requirements, psychosocial requirements are frequently also to be overcome, which arise as a result of achieving a higher social class. In the following, it is investigated whether resilience is a factor on educational upward mobility or not. A survey of 157 students at the Hochschule Hannover was carried out. No significant difference was found between resilience among the 77 educational climbers and the 80 non-educational climbers of this sample. In a preliminary study, the Resilience Scale RS-25 (Schumacher et al., 2005) was further developed into the Resilience Scale RS-29 and empirically tested. A data collection of the RS-29 at 416 students at the Hochschule Hannover confirmed three supposed factors by trend.
DEMAND FOR PLANT NUTRIENTS IN TENNESSEE DISAGGREGATED BY MIXED FERTILIZERS AND DIRECT APPLICATION MATERIALS
Creators: name: Roberts, Roland K.
name: Garrod, Peter V.
name: Roberts, Roland K.
name: Garrod, Peter V.
Publisher: name: Unknown
Year: 1987
Subjects: Crop Production/Industries

description: When obtaining nitrogen (N), phosphate (P) and potash (K), purchasing decisions concerning the quantity and the form of each plant nutrient must be made. Logit models are estimated for the choice-of-form decision by considering those variables influencing the probability that plant nutrients will be purchased in Tennessee as part of a mixed fertilizer or as direct application materials. Parameter and elasticity estimates can be used by fertilizer manufacturers and distributors to anticipate changes in the composition of demand for plant nutrients in Tennessee.
Dehnhard, Hans: Das Problem der Abhängigkeit des Basilius von Plotin
Creators: name: Davids, E.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 49 (1965): Oriens christianus, Band 49
Constrained-Space Optimization and Reinforcement Learning for Complex Tasks
Creators: name: Tsai, Ya-Yen
name: Xiao, Bo
name: Johns, Edward
name: Yang, Guang-Zhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Learning from Demonstration is increasingly used for transferring operator manipulation skills to robots. In practice, it is important to cater for limited data and imperfect human demonstrations, as well as underlying safety constraints. This paper presents a constrained-space optimization and reinforcement learning scheme for managing complex tasks. Through interactions within the constrained space, the reinforcement learning agent is trained to optimize the manipulation skills according to a defined reward function. After learning, the optimal policy is derived from the well-trained reinforcement learning agent, which is then implemented to guide the robot to conduct tasks that are similar to the experts' demonstrations. The effectiveness of the proposed method is verified with a robotic suturing task, demonstrating that the learned policy outperformed the experts' demonstrations in terms of the smoothness of the joint motion and end-effector trajectories, as well as the overall task completion time.
description: Accepted for publication in RA-Letters and at ICRA 2020
Lateral gene transfer from bacteria to protists
Creators: name: De Koning, Audrey Patricia
Publisher: name: University of British Columbia
Year: 2009

description: The advent of genome-level sequencing has brought a wealth of genetic information that can be used to trace the evolution of organisms. Phylogenies based on homologous proteins often do not agree on implied species relationships, indicating that the evolutionary path taken by some of these genes differs from the evolution of the organisms. One explanation for this observed pattern is lateral gene transfer, the movement of genes across species boundaries. There are mechanisms to facilitate such movement in prokaryotic organisms. In eukaryotes, it is less clear what mechanisms might facilitate incorporation of foreign genes into a species' genome. Multicellular eukaryotes are presumably more resistant to lateral gene transfer, because the majority of their cells do not have access to genes from other organisms. Moreover, germ and somatic cell lineages are often separate, which greatly reduces the probability that any gene that gains access to a foreign cell will be heritable and subsequently become part of its host species' genome. Phagotrophic protists, however, represent one type of eukaryote where these restrictions do not exist. Such organisms commonly ingest bacteria as food, and chance events may lead to the incorporation and use of bacterial genes. Lateral gene transfer from organelles of symbiotic origin (the chloroplast and mitochondrion) to the nucleus of the host organism represents a specialized case of lateral gene transfer resulting from phagotrophy. Lateral gene transfer in eukaryotes, therefore, is expected to involve bacterial genes incorporated into the genomes of phagocytic species (or those that have evolved from them). Accordingly, genes of bacterial origin were sought among the genetic information available from protists. Over 2000 predicted genes from the genome-sequencing project for the malarial parasite, Plasmodium falciparum, were screened to find those that are highly similar to genes from bacterial species. Phylogenetic reconstruction methods were used to elucidate the evolution of 'bacteria-like' genes. Thirteen laterally transferred genes were identified on the basis of protein phylogeny, of which nine are probably transferred from symbiotic organelles and three appear to involve transfers with bacteria. The conclusion is that genes introduced to the genome through lateral gene transfer are not nearly as prevalent in this eukaryote as they are in bacteria.
title: Bestandsaufnahme von Energiemanagementfunktionen in Leitsystemen
Creators: name: Niemann, Karl-Heinz
Publisher: name: Zentralverband Elektrotechnik- und Elektronikindustrie (ZVEI)
Year: 2017
Subjects: subject: 330 Wirtschaft
subject: 004 Informatik

description: Die Studie gibt einen Überblick über Energiemanagementfunktionen und deren Integration in Automatisierungssysteme. Sie besteht aus den folgenden Teilen: 1.) Bestandsaufnahme und Marktübersicht von Energiemanagementsystemen, insbesondere von den an der Studie beteiligten Firmen und zwei weitere Produkte als Referenz. 2.) Anwenderinterviews mit Anwendern aus verschiedenen Schlüsselindustrien der Prozess- und Fertigungsautomatisierung zur Evaluierung künftiger Anforderungen und Erwartungen an ein Energiemanagement insbesondere auch im Hinblick auf die Integration in Automatisierungssysteme. 3.) Bedeutung des Energiemanagements in der Zukunft und daraus abzuleitende Maßnahmen.
Upper limits on the hot Jupiter fraction in the field of NGC 7789
Creators: name: Bramich, D. M.
name: Horne, Keith
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a method of estimating the abundance of short-period extrasolar planets based on the results of a photometric survey for planetary transits. We apply the method to a 21-night survey with the 2.5m Isaac Newton Telescope of \~32000 stars in a ~0.5 deg by 0.5 deg square field including the open cluster NGC 7789. From the colour-magnitude diagram we estimate the mass and radius of each star by comparison with the cluster main sequence. We search for injected synthetic transits throughout the lightcurve of each star in order to determine their recovery rate, and thus calculate the expected number of transit detections and false alarms in the survey. We take proper account of the photometric accuracy, time sampling of the observations and criteria (signal-to-noise and number of transits) adopted for transit detection. Assuming that none of the transit candidates found in the survey will be confirmed as real planets, we place conservative upper limits on the abundance of planets as a function of planet radius, orbital period and spectral type.
description: Submitted to MNRAS (04/11/2005)
title: Entwicklung einer mobilen Anwendung zur Produktnachverfolgung im Fertigungsprozess
Creators: name: Sperling, Marvin
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 670 Industrielle und handwerkliche Fertigung
subject: 004 Informatik

description: Die Digitalisierung birgt sowohl für den Unternehmer, als auch für den Kunden diverse Vorteile. Als Instrument zur Veranschaulichung dieser Vorteile dienen vor allem Service-Apps, welche bereits von großen Unternehmen beispielsweise zur Produktnachverfolgung etabliert wurden. Das Mittelstand 4.0 – Kompetenzzentrum Hannover legt den Fokus auf kleine und mittelständische Produktionsbetriebe und vermittelt das Potenzial der Digitalisierung im Rahmen von Industrie 4.0. Dies geschieht anhand einer Produktionslinie personalisierter Kugelschreiber und einer zu Demonstrationszwecken entwickelten App für mobile Endgeräte. Konzeptionierung, Entwicklung und Umsetzung dieser App werden genauestens aufgeführt und erläutert. Die App wurde unter dem Betriebssystem Android entwickelt und gliedert sich in sieben Phasen, beginnend mit der Anforderungsanalyse bis hin zur Veröffentlichung im Google Play Store. Während der Unternehmer die Möglichkeit geboten bekommt, Rückschlüsse als Entscheidungshilfe zur effizienteren Gestaltung der Produktion zu nutzen, ist der Kunde in der Lage, seine Aufträge echtzeitnah in der Produktion nachzuverfolgen und gegebenenfalls Änderungen vorzunehmen.
Solitary oscillations and multiple antikink-kink pairs in the double sine-Gordon model
Creators: name: Simas, Fabiano C.
name: Lima, Fred C.
name: Nobrega, K. Z.
name: Gomes, Adalto R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study kink-antikink collisions in a particular case of the double sine-Gordon model depending on only one parameter $r$. The scattering process of large kink-antikink shows the changing of the topological sector. For some parameter intervals we observed two connected effects: the production of up to five antikink-kink pairs and up to three solitary oscillations. The scattering process for small kink-antikink has several possibilities: the changing of the topological sector, one-bounce collision, two-bounce collision, or formation of a bion state. In particular, we observed for small values of $r$ and velocities, the formation of false two-bounce windows and the suppression of true two-bounce windows, despite the presence of an internal shape mode.
description: 25 pages, 36 figures, v2: significant extra material, new figures and references added
Spin filtering through ferromagnetic BiMnO3 tunnel barriers
Creators: name: Gajek, M.
name: Bibes, M.
name: Barthelemy, A.
name: Bouzehouane, K.
name: Fusil, S.
name: Varela, M.
name: Fontcuberta, J.
name: Fert, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on experiments of spin filtering through ultra-thin single-crystal layers of the insulating and ferromagnetic oxide BiMnO3 (BMO). The spin polarization of the electrons tunneling from a gold electrode through BMO is analyzed with a counter-electrode of the half-metallic oxide La2/3Sr1/3MnO3 (LSMO). At 3 K we find a 50% change of the tunnel resistances according to whether the magnetizations of BMO and LSMO are parallel or opposite. This effect corresponds to a spin filtering effciency of up to 22%. Our results thus show the potential of complex ferromagnetic insulating oxides for spin filtering and injection.
Hardware locality-aware partitioning and dynamic load-balancing of unstructured meshes for large-scale scientific applications
Creators: name: Mohanamuraly, Pavanakumar
name: Staffelbach, Gabriel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We present an open-source topology-aware hierarchical unstructured mesh partitioning and load-balancing tool TreePart. The framework provides powerful abstractions to automatically detect and build hierarchical MPI topology resembling the hardware at runtime. Using this information it intelligently chooses between shared and distributed parallel algorithms for partitioning and load-balancing. It provides a range of partitioning methods by interfacing with existing shared and distributed memory parallel partitioning libraries. It provides powerful and scalable abstractions like one-sided distributed dictionaries and MPI3 shared memory based halo communicators for optimising HPC codes. The tool was successfully integrated into our in-house code and we present results from a large-eddy simulation of a combustion problem.
Additional file 1 of Evaluation of the performance of algorithms mapping EORTC QLQ-C30 onto the EQ-5D index in a metastatic colorectal cancer cost-effectiveness model
Creators: name: Franken, Mira D.
name: Hond, Anne De
name: Degeling, Koen
name: Punt, Cornelis J. A.
name: Koopman, Miriam
name: Groot, Carin A. Uyl-De
name: Versteegh, Matthijs M.
name: Oijen, Martijn G. H. Van
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: Additional file 1. Histogram of EQ-5D-3L based utilities of 1905 observations.
Measurement of finite frequency noise cross-correlations with a resonant circuit
Creators: name: Creux, Marjorie
name: Crepieux, Adeline
name: Martin, Thierry
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The measurement of finite frequency noise cross-correlations represents an experimental challenge in mesoscopic physics. Here we propose a generalisation of the resonant LC circuit setup of Lesovik and Loosen which allow to probe directly such cross-correlations by measuring the charge fluctuations on the plates of a capacitor. The measuring circuit collects noise contributions at the resonant frequency of the LC circuit. Auto-correlation noise can be canceled out by switching the wires and making two distinct measurements. The measured cross-correlations then depend of four non-symmetrized correlators. This detection method is applied to a normal metal three terminal device. We subsequently discuss to what extent the measurement circuit can detect electron-antibunching and what singularities appear in the spectral density of noise cross-correlations.
title: Demografieorientiertes Personalmanagement in kleinen und mittleren wissenschaftlichen Bibliotheken
Creators: name: Kolata, Maren
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: Der demografische Wandel stellt für das Personalmanagement eine Herausforderung dar, mit der sich auch Bibliotheken auseinandersetzen müssen. Die vorliegende Arbeit setzt sich mit der Frage auseinander, welche Maßnahmen des Personalmanagements kleine und mittlere wissenschaftliche Bibliotheken anwenden und inwiefern sie damit auf den demografischen Wandel vorbereitet sind. Der erste Teil der Arbeit umfasst die theoretischen Grundlagen. Dafür werden zunächst die zentralen Begriffe demografischer Wandel, Personalmanagement sowie Personalentwicklung definiert. Anschließend werden Handlungsfelder sowie deren Bedeutung für ein demografieorientiertes Personalmanagement dargestellt. Diese umfassen die Altersstrukturanalyse, die Personalgewinnung, die Personalbindung, die Personalentwicklung, die Gesundheitsförderung und das Gesundheitsmanagement sowie den Wissenstransfer. Sie beinhalten außerdem auch Beispiele von Maßnahmen aus größeren wissenschaftlichen sowie öffentlichen Bibliotheken. Die aus einer Befragung gewonnenen Erkenntnisse über die Maßnahmen des Personalmanagements in kleinen und mittleren wissenschaftlichen Bibliotheken werden im zweiten Teil der Arbeit beschrieben. Abschließend werden anhand der theoretischen Grundlagen sowie der gewonnenen Erkenntnisse Handlungsempfehlungen für die Zielgruppe der kleinen und mittleren wissenschaftlichen Bibliotheken gegeben.
Fittino, a program for determining MSSM parameters from collider observables using an iterative method
Creators: name: Bechtle, Philip
name: Desch, Klaus
name: Wienemann, Peter
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Provided that Supersymmetry (SUSY) is realized, the Large Hadron Collider (LHC) and the future International Linear Collider (ILC) may provide a wealth of precise data from SUSY processes. An important task will be to extract the Lagrangian parameters. On this basis the goal is to uncover the underlying symmetry breaking mechanism from the measured observables. In order to determine the SUSY parameters, the program Fittino has been developed. It uses an iterative fitting technique and a Simulated Annealing algorithm to determine the SUSY parameters directly from the observables without any a priori knowledge of the parameters, using all available loop-corrections to masses and couplings. Simulated Annealing is implemented as a stable and efficient method for finding the optimal parameter values. The theoretical predictions can be provided from any program with SUSY Les Houches Accord interface. As fit result, a set of parameters including the full error matrix and two-dimensional uncertainty contours are obtained. Pull distributions can automatically be created and allow an independent cross-check of the fit results and possible systematic shifts in the parameter determination. A determination of the importance of the individual observables for the measurement of each parameter can be performed after the fit. A flexible user interface is implemented, allowing a wide range of different types of observables and a wide range of parameters to be used.
description: 32 pages, 6 figures, accepted by Comp. Phys. Comm
Water megamaser emission in hard X-ray selected AGN
Creators: name: Panessa, Francesca
name: Castangia, Paola
name: Malizia, Angela
name: Bassani, Loredana
name: Tarchi, Andrea
name: Bazzano, Angela
name: Ubertini, Pietro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Water megamaser emission at 22 GHz has proven to be a powerful tool for astrophysical studies of AGN allowing an accurate determination of the central black hole mass and of the accretion disc geometry and dynamics. However, after searches among thousands of galaxies, only ~ 200 of them have shown such spectroscopic features, most of them of uncertain classification. In addition, the physical and geometrical conditions under which maser activates are still unknown. In this work we aim at characterizing the occurrence of water maser emission in an unbiased sample of AGN, investigating the relation with the X-ray properties and the possible favorable geometry needed to detect water maser. We have searched for 22 GHz maser emission in a hard X-ray selected sample of AGN, taken from the INTEGRAL/IBIS survey above 20 keV. Of the 380 sources in the sample, only half have water maser data. We have also considered a sub-sample of 87 sources, volume limited, for which we obtained new Green Bank Telescope and Effelsberg observations (for 35 sources), detecting one new maser and increasing its radio coverage to 75%. The detection rate of water maser emission in the total sample is 15+/-3%, this fraction raises up to 19+/-5% for the complete sub-sample, especially if considering type 2 and Compton thick AGN. These results demonstrate that the hard X-ray selection may significantly enhance the maser detection efficiency over comparably large optical/infrared surveys. A possible decline of the detection fraction with increasing luminosity might suggest that an extreme luminous nuclear environment does not favour maser emission. The large fraction of CT AGN with water maser emission could be explained in terms of geometrical effects, being the maser medium the very edge-on portion of the obscuring medium.
description: 21 pages, 3 figures. Accepted for publication in A&A June 2020
title: Artificial Intelligence as a Commons – Opportunities and Challenges for Society
Creators: name: Salameh, Amelie
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft
subject: 004 Informatik

description: The development of Artificial Intelligence (AI) has profound implications for improving human and computational productivity in the future. However, it also is an existential risk to human life because it could exceed human capabilities. As such, information about the technology, the direction of the development and its purpose is important. This can be achieved through openness and transparency of processes. Indeed, companies hold property rights over AI and monopolies of software, data and experts. As a countermovement to leading AI companies, the “Open AI Movement” has evolved to push open-source AI research and products, to empower users, and to bridge the digital divide through participation and access. In this thesis, the implications of the declaration of AI as a commons have been analyzed through interviews with AI experts in the United States. The legal placement of AI is controversial but it could be seen as a basic human right. Other findings are that this field is very competitive and that the best approach is to collaboratively develop software that adds additional value on the edge of the commons.
Statistical Analysis Plan: Safety study of sibling cord blood cell infusion to children with cerebral palsy (SCUBI-CP)
Creators: name: Lee, Katherine
name: Schembri, Rachel
name: Crompton, Kylie
Publisher: name: Murdoch Childrens Research Institute
Year: 2020
Subjects: Health Sciences

description: This is the finalised Statistical Analysis Plan for the SCUBI-CP study
Statistical Analysis Plan: Randomised controlled trial of a combination of Dexamethasone and Adrenaline for Bronchiolitis: DAB Trial
Creators: name: Lee, Katherine
name: Schembri, Rachel
name: Gelbart, Ben
Publisher: name: Murdoch Childrens Research Institute
Year: 2020
Subjects: Health Sciences

description: This document is the finalised statistical analysis plan for the DAB trial
CAPITAL ADJUSTMENT IN U.S. AGRICULTURE AND FOOD PROCESSING: A CROSS-SECTORAL MODEL
Creators: name: Arnade, Carlos Anthony
name: Gopinath, Munisamy
name: Arnade, Carlos Anthony
name: Gopinath, Munisamy
Publisher: name: Unknown
Year: 1998
Subjects: Agricultural Finance

description: Significant differences exist in the rates of capital adjustment in the four major sectors of the U.S. economy: agriculture, food, manufacturing, and services. A multioutput adjustment cost model is specified to compute the rates of capital adjustment. This specification allows us to derive dynamic output supply and investment demand functions for the four sectors, which are then fitted to time-series data. Our estimates show that capital in agriculture and manufacturing is almost fixed and adjusts toward respective long-run equilibrium at a rate of about 2% per year. The food processing and services sectors are more flexible in that their capital stocks fully adjust in less than five years. Thus, the rate of adjustment of agricultural capital is lower than that of other sectors in the U.S. economy.
INFORMATIONAL EFFECTS OF NUTRIENT INTAKE DETERMINANTS ON CHOLESTEROL CONSUMPTION
Creators: name: Variyam, Jayachandran N.
name: Blaylock, James R.
name: Smallwood, David M.
name: Variyam, Jayachandran N.
name: Blaylock, James R.
name: Smallwood, David M.
Publisher: name: Unknown
Year: 1998
Subjects: Food Consumption/Nutrition/Food Safety

description: Nutrient information and dietary data for a sample of U.S. household meal planners are used to estimate the direct and indirect effects of various dietary determinants on cholesterol intake. Holding sociodemographic and household characteristics constant, greater nutrition information translates to significantly lower intake of dietary cholesterol. Evidence supports the hypothesis that schooling promotes better health behavior through greater acquisition and use of health information. Blacks and Hispanics stand to benefit from nutrition education programs to increase their awareness of diet-health relationship. A low-calorie diet decreases the intake of cholesterol more than a low-fat diet.
Landau-Zener Transition in Topological Acoustic Pumping
Creators: name: Chen, Ze-Guo
name: Tang, Weiyuan
name: Zhang, Ruo-Yang
name: Ma, Guancong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Quantized charge pumping is a robust adiabatic phenomenon uniquely existing in topologically nontrivial systems. Such topological pumping not only brings fundamental insights to the evolution of states under the protection of topology but also provides a vital approach for the study of higher-dimensional topological phases. In this work, we demonstrate topological pumping in an acoustic waveguide system by showing the successful pumping of topological boundary states (TBSs) across the bulk to the opposite edge. By exploring the finite-size induced mini-gap between two TBS bands, we unveil the quantitative condition for the breakdown of adiabaticity in the system by demonstrating the Landau-Zener transition with both theory and experiments. Our results not only open a new route for future investigations of topological acoustics but also establish non-adiabatic transitions as a new degree of freedom for manipulating topological states.
description: 13 pages, 4 figures
AN ECONOMIC ANALYSIS OF OZONE CONTROL IN CALIFORNIA'S SAN JOAQUIN VALLEY
Creators: name: Kim, Hong Jin
name: Helfand, Gloria E.
name: Howitt, Richard E.
name: Kim, Hong Jin
name: Helfand, Gloria E.
name: Howitt, Richard E.
Publisher: name: Unknown
Year: 1998
Subjects: Environmental Economics and Policy

description: This study estimates the benefits to agricultural and human health of reducing ozone in the San Joaquin Valley of California, and the costs of ozone control. The San Joaquin Valley's highly valued crops suffer from high ozone levels. Federal and state primary ozone standards are based on health effects, not effects on other sectors, and do not consider costs of attaining the standards. The methods here allow comparison of both total and marginal benefits and costs. The results suggest that net gains can be achieved for the entire valley by reducing ozone below 1990 levels, although results vary by region.
Neutral and charged current cross section measurements and searches for new physics at HERA
Creators: name: Malden, Nicholas
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: HERA is the only high energy electron-proton collider in the world today and hence has unique opportunities both to probe the structure of the proton and to search for physics beyond the Standard Model. Results are presented for measurements of both neutral and charged current cross sections, and for searches for exotic processes involving direct electron-quark interactions (leptoquarks and R-parity violating SUSY), generic coupling models (contact interactions) and exclusive final states (isolated leptons and missing PT, single top production and pentaquarks). Exclusion limits on proposed models are set where no deviation from Standard Model predictions are found.
description: 12 pages, 11 figures, Contribution to the proceedings of HEP-MAD 04, Antananarivo, Madagascar
EXPERIMENTAL SIMULATION OF PUBLIC INFORMATION IMPACTS ON PRICE DISCOVERY AND MARKETING EFFICIENCY IN THE FED CATTLE MARKET
Creators: name: Anderson, John D.
name: Ward, Clement E.
name: Koontz, Stephen R.
name: Peel, Derrell S.
name: Trapp, James N.
name: Anderson, John D.
name: Ward, Clement E.
name: Koontz, Stephen R.
name: Peel, Derrell S.
name: Trapp, James N.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Federal budgetary pressures raise questions regarding the importance of public market information. This study assesses the impact of price discovery and production efficiency of reducing public price and quantity information. The amount and type of information provided to Fed Cattle Market Simulator (FCMS) participants was varied by periodically withholding current and weekly summary information according to a predetermined experimental design. Results show that reducing information increased price variance and decreased marketing efficiency; that is, more cattle were delivered at weights deviating from 1,150 pounds- the least-cost marketing weight in the simulator. These factors, which increase costs, make the industry less competitive.
title: Biopolymers - facts and statistics
title: Production capacities, processing routes, feedstock, land and water use
titleType: Subtitle
Creators: name: IfBB Institut Für Biokunststoffe Und Bioverbundwerkstoffe
Publisher: name: Hochschule Hannover
Year: 2017
Subjects: subject: 660 Technische Chemie

description: One of the main concerns of this publication is to furnish a more rational basis for discussing bioplastics and use fact-based arguments in the public discourse. Furthermore, “Biopolymers – facts and statistics” aims to provide specific, qualified answers easily and quickly for decision-makers in particular from public administration and the industrial sector. Therefore, this publication is made up like a set of rules and standards and largely foregoes textual detail. It offers extensive market-relevant and technical facts presented in graphs and charts, which means that the information is much easier to grasp. The reader can expect comparative market figures for various materials, regions, applications, process routes, agricultural land use, water use or resource consumption, production capacities, geographic distribution, etc.
description: Biopolymers - facts and statistics; 4
THE ROLE OF SOIL TEST INFORMATION IN REDUCING GROUNDWATER POLLUTION
Creators: name: Fleming, Ronald A.
name: Adams, Richard M.
name: Ervin, David E.
name: Fleming, Ronald A.
name: Adams, Richard M.
name: Ervin, David E.
Publisher: name: Unknown
Year: 1998
Subjects: Environmental Economics and Policy

description: Testing soils for nutrients is expected to improve groundwater quality. However, it is unknown whether soil testing will improve groundwater quality sufficiently to decrease the demand for direct regulation of agricultural practices. Focusing on an irrigated agricultural region in eastern Oregon, the economic and environmental aspects of soil testing are assessed using a spatially distributed, dynamic simulation model which links economic behavior with the physical processes that determine groundwater quality. Results indicate that soil testing of all fields increases farm profits and reduced groundwater nitrate concentration. However, the benefits are small in terms of potential improvements in groundwater quality
Annales d'Éthiopie II (1957) ...
Creators: name: Hammerschmidt, Ernst
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 49 (1965): Oriens christianus, Band 49
சமூகப் புரட்சியில் பெரியார்
Creators: name: முனைவர் தி. அறக்கலைச்செல்வி பிஎச்.டி.,
Publisher: name: figshare
Year: 2020
Subjects: subject: 200315 Indian Languages
subject: FOS: Languages and literature
subject: 200520 Indian Literature

description: மனித இனம் குழு வாழ்க்கையை மேற்கொண்டு வாழ்ந்து வருகிறது. அதன் தொடர்ச்சியே சமுதாய வாழ்க்கை ஆகும். கால ஓட்டத்தில் தமிழ் சமூகத்தில் எண்ணற்ற வேறுபாடுகள் நிலவி வந்தன. அந்தச் சூழலில் தந்தை பெரியார் அவர்கள் மேற்கொண்ட சமுதாயப் பணிகள் அளப்பரியது.
Spontaneous current generation in the gapless 2SC phase
Creators: name: Huang, Mei
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Superconductivity (cond-mat.supr-con)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: It is found that, except chromomagnetic instability, the gapless 2SC phase also exhibits a paramagnetic response to the perturbation of an external color neutral baryon current. The spontaneously generated baryon current driven by the mismatch is equivalent to the one-plane wave LOFF state. We describe the 2SC phase in the nonlinear realization framework, and show that each instability indicates the spontaneous generation of the corresponding pseudo Nambu-Golstone current. We show this Nambu-Goldstone currents generation state covers the gluon phase as well as the one-plane wave LOFF state. We further point out that, when charge neutrality condition is required, there exists a narrow unstable LOFF (Us-LOFF) window, where not only off-diagonal gluons but the diagonal 8-th gluon cannot avoid the magnetic instability. We discuss that the diagonal magnetic instability in this Us-LOFF window cannot be cured by off-diagonal gluon condensate in color superconducting phase, and it will also show up in some constrained Abelian asymmetric superfluid/superconducting system.
description: 8 pages, no figure, final version to appear in PRD
ECONOMIC AND HYDROLOGIC IMPLICATIONS OF SUSPENDING IRRIGATION IN DRY YEARS
Creators: name: Keplinger, Keith O.
name: McCarl, Bruce A.
name: Chowdhury, Manzoor E.
name: Lacewell, Ronald D.
name: Keplinger, Keith O.
name: McCarl, Bruce A.
name: Chowdhury, Manzoor E.
name: Lacewell, Ronald D.
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries

description: A dry year irrigation suspension has been proposed as a way of reallocating water when aquifer levels are low for the Texas Edwards Aquifer. Under this program, farmers would be paid to suspend irrigation to allow more spring flow or nonagricultural pumping. When irrigation is suspended in the east, springflow response is markedly larger than when suspended in the western portions of the aquifer. Most acreage participates when a $90 per acre payment is offered before the cropping season. Considerably higher payments are needed and less water saved for a suspension program instituted during the cropping season.
THE EFFECT OF STOCHASTIC IRRIGATION DEMANDS AND SURFACE WATER SUPPLIES ON ON-FARM WATER MANAGEMENT
Creators: name: Willis, David B.
name: Whittlesey, Norman K.
name: Willis, David B.
name: Whittlesey, Norman K.
Publisher: name: Unknown
Year: 1998
Subjects: Resource /Energy Economics and Policy

description: This study presents a procedure for simultaneously addressing stochastic input demands and resource supplies for irrigated agriculture within a linear modeling framework. Specifically, the effect of stochastic crop net irrigation requirements and streamflow supplies on irrigation water management is examined. Irrigators pay a self-protection cost, in terms of water management decisions, to increase the probability that stochastic crop water demand is satisfied and anticipated water supply is available. Self-protection cost is lower when increasing the probability that anticipated water supplies are delivered, ceteris paribus, than when increasing the probability that the crop receives full net irrigation requirement in the study region.
The properties of inside-out assembled galaxies at $z<0.1$
Creators: name: Zewdie, Dejene
name: Pović, Mirjana
name: Aravena, Manuel
name: Assef, Roberto J.
name: Gaulle, Asrate
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: In this work, we study the properties of galaxies that are showing the inside-out assembly (which we call inside-out assembled galaxies; IOAGs), with the main aim to understand better their properties and morphological transformation. We analysed a sample of galaxies from the Sloan Digital Sky Survey (SDSS) Data Release 8 (DR8), with stellar masses in the range $\log M_{\star}=10.73-11.03$ $M_{\odot{}}$ at $z < 0.1$, and analyze their location in the stellar mass-SFR and the color-stellar mass diagram. We found that IOAGs have different spectroscopic properties, most of them being classified either as AGN or composite. We found that the majority of our sources are located below the main sequence of star formation in the SFR-stellar mass diagram, and in the green valley or red sequence in the color-stellar mass diagram. We argue that IOAGs seem to correspond to the transition area where the galaxies are moving from star-forming to quiescent, and from the blue cloud to the red sequence and/or to recently quenched galaxies.
description: 3 pages, 2 figures, Proceedings paper of the IAU symposium "Nuclear Activity in Galaxies Across Cosmic Time" (Ethiopia) accepted to be published under the Cambridge University Press, eds M. Povi\'c, P. Marziani, J. Masegosa, H. Netzer, S. H. Negu, & S. B. Tessema