cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Critical Temperature Studies of the Anisotropic Bi- and Multilayer Heisenberg Ferromagnets in Pair Approximation
Creators: name: Szałowski, Karol
name: Balcerzak, Tadeusz
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The Pair Approximation method is applied to studies of the bilayer and multilayer magnetic systems with simple cubic structure. The method allows to take into account quantum effects related with non-Ising couplings. The paper adopts the anisotropic Heisenberg model for spin $S=1/2$ and considers the phase transition temperatures as a function of the exchange integrals strength in line with the role of intra- and interplanar anisotropic interactions in the onset of low-dimensional magnetism. The compensation effect for the Curie temperature is found for asymmetric interactions within the neighbouring planes of the bilayer system. The paper predicts the saturation of the Curie temperature for strong interplanar interactions. However, such an effect for the multilayer system occurs only when the interplanar interactions are of purely isotropic character.
The Extended Parameter Filter
Creators: name: Erol, Yusuf
name: Li, Lei
name: Ramsundar, Bharath
name: Russell, Stuart J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The parameters of temporal models, such as dynamic Bayesian networks, may be modelled in a Bayesian context as static or atemporal variables that influence transition probabilities at every time step. Particle filters fail for models that include such variables, while methods that use Gibbs sampling of parameter variables may incur a per-sample cost that grows linearly with the length of the observation sequence. Storvik devised a method for incremental computation of exact sufficient statistics that, for some cases, reduces the per-sample cost to a constant. In this paper, we demonstrate a connection between Storvik's filter and a Kalman filter in parameter space and establish more general conditions under which Storvik's filter works. Drawing on an analogy to the extended Kalman filter, we develop and analyze, both theoretically and experimentally, a Taylor approximation to the parameter posterior that allows Storvik's method to be applied to a broader class of models. Our experiments on both synthetic examples and real applications show improvement over existing methods.
title: Bemerkungen über das römische Baudenkmal zu Fliessem, in Bezug auf die, im IV. Hefte dieser Jahrbücher, erschienene Recension
Creators: name: Schmidt, Christian Wilhelm
Publisher: name: University Library Heidelberg
Year: 2015

description: Rezension zu: Bemerkungen über das römische Baudenkmal zu Fliessem, in Bezug auf die, im IV. Hefte dieser Jahrbücher, erschienene Recension.
Transient and self-limited nanostructures on patterned surfaces
Creators: name: Dimastrodonato, V.
name: Pelucchi, E.
name: Zestanakis, P. A.
name: Vvedensky, D. D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Site-controlled quantum dots formed during the deposition of (Al)GaAs layers by metalorganic vapor-phase epitaxy on GaAs(111)B substrates patterned with inverted pyramids result in geometric and compositional self-ordering along the vertical axis of the template. We describe a theoretical scheme that reproduces the experimentally-observed time-dependent behavior of this process, including the evolution of the recess and the increase of Ga incorporation along the base of the template to stationary values determined by alloy composition and other growth parameters. Our work clarifies the interplay between kinetics and geometry for the development of self-ordered nanostructures on patterned surfaces, which is essential for the reliable on-demand design of confined systems for applications to quantum optics.
Taxus baccata L.
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: T. baccata L. Cat. 404. Bis 1600 m. l: Unter Les Gietes bei St-lVtaurice (J.); Daviaz (Garns); Evionnaz (Marietan); Le Rosel (Garns). - 2: Ob Branson (Garns); ob Fully, bis 1600 m (idem); Ovronnaz (Marietan); Ardevaz (Beauverd); Bisse de Saviese (Marietan); zwischen Lens und Icogne (Besse, Wille); Tal der Dala (Delacoste, Wilczek); Schwemmkegel des Feschelbaches östlich Leuk, spärlich (Thommen); unter Erschmatt, ein Stock (JVtarietan); Bietschtal (Delacoste); Baltschiedertal (idem); m der Gegend von Naters (schon Rion) bei Biel (Marietan). - 3: Bei Chippis in der Schlucht der Navisence (Wille).-3a:GondoschluchtzwischendemFort und Gondo,mehrfach (Becherer, Frauenfelder).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Advanced neural networks : finance, forecast, and other applications
Creators: name: Mettenheim, Hans-Jörg Henri Von
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2010
Subjects: subject: Neural networks
subject: grid computing
subject: parallelization
subject: high-dimensional optimization
subject: quantitative investment
subject: decision support
subject: Neuronale Netze
subject: Parallelisierung
subject: hoch-dimensionale Optimierung
subject: quantitatives Investment
subject: Entscheidungsunterstützung
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
TrAp: a Tree Approach for Fingerprinting Subclonal Tumor Composition
Creators: name: Strino, Francesco
name: Parisi, Fabio
name: Micsinai, Mariann
name: Kluger, Yuval
Publisher: name: arXiv
Year: 2013
Subjects: subject: Genomics (q-bio.GN)
subject: FOS: Biological sciences

description: Revealing the clonal composition of a single tumor is essential for identifying cell subpopulations with metastatic potential in primary tumors or with resistance to therapies in metastatic tumors. Sequencing technologies provide an overview of an aggregate of numerous cells, rather than subclonal-specific quantification of aberrations such as single nucleotide variants (SNVs). Computational approaches to de-mix a single collective signal from the mixed cell population of a tumor sample into its individual components are currently not available. Herein we propose a framework for deconvolving data from a single genome-wide experiment to infer the composition, abundance and evolutionary paths of the underlying cell subpopulations of a tumor. The method is based on the plausible biological assumption that tumor progression is an evolutionary process where each individual aberration event stems from a unique subclone and is present in all its descendants subclones. We have developed an efficient algorithm (TrAp) for solving this mixture problem. In silico analyses show that TrAp correctly deconvolves mixed subpopulations when the number of subpopulations and the measurement errors are moderate. We demonstrate the applicability of the method using tumor karyotypes and somatic hypermutation datasets. We applied TrAp to SNV frequency profile from Exome-Seq experiment of a renal cell carcinoma tumor sample and compared the mutational profile of the inferred subpopulations to the mutational profiles of twenty single cells of the same tumor. Despite the large experimental noise, specific co-occurring mutations found in clones inferred by TrAp are also present in some of these single cells. Finally, we deconvolve Exome-Seq data from three distinct metastases from different body compartments of one melanoma patient and exhibit the evolutionary relationships of their subpopulations.
On Spacetime Entanglement
Creators: name: Myers, Robert C.
name: Pourhasan, Razieh
name: Smolkin, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We examine the idea that in quantum gravity, the entanglement entropy of a general region should be finite and the leading contribution is given by the Bekenstein-Hawking area law. Using holographic entanglement entropy calculations, we show that this idea is realized in the Randall-Sundrum II braneworld for sufficiently large regions in smoothly curved backgrounds. Extending the induced gravity action on the brane to include the curvature-squared interactions, we show that the Wald entropy closely matches the expression describing the entanglement entropy. The difference is that for a general region, the latter includes terms involving the extrinsic curvature of the entangling surface, which do not appear in the Wald entropy. We also consider various limitations on the validity of these results.
description: 45 pages, 9 figures
Root optimization of polynomials in the number field sieve
Creators: name: Bai, Shi
name: Brent, Richard P.
name: Thomé, Emmanuel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 11A51 (Primary) 11R09 (Secondary)

description: The general number field sieve (GNFS) is the most efficient algorithm known for factoring large integers. It consists of several stages, the first one being polynomial selection. The quality of the chosen polynomials in polynomial selection can be modelled in terms of size and root properties. In this paper, we describe some algorithms for selecting polynomials with very good root properties.
description: 16 pages, 18 references
Advances in GPS based time and frequency comparisons for metrological use
Creators: name: Feldmann, Thorsten
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2011
Subjects: subject: Time comparisons
subject: frequency comparisons
subject: GPS
subject: Zeitvergleiche
subject: Frequenzvergleiche
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Joint power and admission control via p norm minimization deflation
Creators: name: Liu, Ya-Feng
name: Dai, Yu-Hong
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In an interference network, joint power and admission control aims to support a maximum number of links at their specified signal to interference plus noise ratio (SINR) targets while using a minimum total transmission power. In our previous work, we formulated the joint control problem as a sparse $\ell_0$-minimization problem and relaxed it to a $\ell_1$-minimization problem. In this work, we propose to approximate the $\ell_0$-optimization problem to a p norm minimization problem where $0
description: 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing
Adenovirus and VSV : investigations on virus-host-interactions to improve safety and efficacy of oncolytic viruses
Creators: name: Schache, Peter
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2009
Subjects: subject: Oncolytic virus
subject: apoptosis
subject: Mcl-1
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Adequacy of capital requirements for securitizations : financial engineering of regulatory approaches, cyclicality, systematic risk and rating standards
Creators: name: Lützenkirchen, Kristina Alexandra
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2014
Subjects: subject: Securitizations
subject: regulatory capital
subject: rating
subject: Verbriefungen
subject: regulatorische Kapitalanforderungen
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft

description: [no abstract]
Shapes of pored membranes
Creators: name: Yao, Zhenwei
name: Sknepnek, Rastko
name: Thomas, Creighton K.
name: de la Cruz, Monica Olvera
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the shapes of pored membranes within the framework of the Helfrich theory under the constraints of fixed area and pore size. We show that the mean curvature term leads to a budding- like structure, while the Gaussian curvature term tends to flatten the membrane near the pore; this is corroborated by simulation. We propose a scheme to deduce the ratio of the Gaussian rigidity to the bending rigidity simply by observing the shape of the pored membrane. This ratio is usually difficult to measure experimentally. In addition, we briefly discuss the stability of a pore by relaxing the constraint of a fixed pore size and adding the line tension. Finally, the flattening effect due to the Gaussian curvature as found in studying pored membranes is extended to two-component membranes. We find that sufficiently high contrast between the components' Gaussian rigidities leads to budding which is distinct from that due to the line tension.
description: 8 pages, 9 figures
Probabilistic Assessment of Coastal Bridge Vulnerability to Wave Loading During Hurricanes
Creators: name: Pervaiz, Fahad
name: Hummel, Michelle
Publisher: name: The University of Texas at Austin
Year: 2023
Subjects: high performance computing

description: Bridges located in coastal areas may be subjected to extreme wave and surge loading during coastal storm events, potentially leading to damage or even collapse. Understanding the loading and response of bridges during storms is critical to ensuring the resilience and reliability of transportation infrastructure in coastal regions. This study develops and applies a probabilistic bridge vulnerability framework that allows for coupled simulation of time-varying wave loading using OpenFOAM, dynamic structural response using OpenSees, and uncertainty quantification using Dakota. The framework is applied to evaluate bridge failure potential under wave and surge loading based on conditions observed during Hurricane Ike. Simulations were run on the Stampede2 system at TACC. Results indicate that waves with high peak periods and long wavelengths are the primary contributors to bridge instability. During Hurricane Ike, extreme wave loading exceeds the resistance of the typical bridge structure over 70% of the time, leading to sliding, uplifting, and overturning. Vertical stability of the bridge is most sensitive to uncertainties in the concrete density, while horizontal stability is most sensitive to uncertainties in the lateral stiffness of the bearings. Results from this research can inform the development of improved design standards for coastal bridges and/or the selection of appropriate countermeasures to improve bridge stability. The proposed computational framework can be applied across transportation systems to quantify failure probabilities and prioritize maintenance and retrofitting efforts for coastal bridges.
Nichtlineare Analyse von LC-TANK VCOs unter Berücksichtigung parasitärer Substrateffekte [Non-linear analysis of an LC tank VCOs considering the parasitic substrate effects]
Creators: name: Przytarski, J.
name: Bremer, J.-K.
name: Mathis, Wolfgang
Publisher: name: Göttingen : Copernicus GmbH
Year: 2009
Subjects: subject: LC tanks
subject: Substrate effects
subject: Electronics engineering
subject: Electrical engineering
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: In dieser Arbeit wird ein Konzept vorgestellt, die Schaltungsarchitektur des LC-Tank-VCOs im höherdimensionalen Zustandsraum zu modellieren. Dabei wurde die VCO-Schaltung auf dominante nichtlineare und asymmetrische Effekte näher untersucht. Das entwickelte Modell bildet die Grundlage für nachfolgende parameterabhängige Analysen der Oszillatorschaltung mittels der Andronov-Hopf Bifurkationsanalyse. Zu diesem Zweck wurde ein höherdimensionales Modell entwickelt, welches für die Bifurkationsanalyse auf ein System 2. Ordnung reduziert werden muss. Als mathematisches Hilfsmittel zur Ordnungsreduktion des Systems wird das Verfahren der Zentrumsmannigfaltigkeit verwendet. Das Differentialgleichungssystem wird sehr schaltungsnah aufgestellt, daraus resultiert der Vorteil einer genaueren Repräsentation des physikalischen Verhaltens der Schaltung. Ziel ist es möglichst viele Effekte die sich auf das Verhalten des VCOs auswirken können, mit zu berücksichtigen.
Nichtlineare Rauschmodellierung von LC Tank VCOs [Nonlinear noise modeling of LC tank voltage-controlled oscillators]
Creators: name: Thiessen, T.
name: Bremer, J.-K.
name: Mathis, Wolfgang
Publisher: name: Göttingen : Copernicus GmbH
Year: 2008
Subjects: subject: LC tanks
subject: Nonlinear noise
subject: Voltage-controlled-oscillator
subject: Electrical engineering
subject: Electronics engineering
subject: Oscillistors
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Im Rahmen dieser Arbeit wird ein alternativer Ansatz zur Phasenrauschoptimierung von LC-Tank Oszillatoren (VCOs) unter Verwendung stochastischer Differentialgleichungen vorgestellt. Zunächst werden die linearen Ansätze von Leeson, Hajimiri und Lee analysiert und bewertet. Danach wird ein Konzept vorgestellt, mit dem man die Rauscheigenschaften von VCOs auf der Grundlage stochastischer Differentialgleichungen und Fokker-Planck-Gleichungen untersuchen kann. Ziel dieser Arbeit ist eine Beschreibung des Phasenrauschens auf der Basis einer nichtlinearen Rauschmodellierung, welche Parameter eines VCOs für eine Optimierung beinhaltet. Es wurde ein Matlab-Tool erstellt und die Funktionalität anhand von Simulationen verifiziert.
Low-Level-Code Based Production Model For Improving Material Requirements Planning In ERP Systems
Creators: name: Wimmert, Felix
name: Hicking, Jan
Publisher: name: Hannover : publish-Ing.
Year: 2021
Subjects: subject: PPC
subject: ERP
subject: MRP
subject: Production Regulation
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Single and small-series production companies face specific challenges, such as variable customer order decoupling points (CODP), decreasing quantities and rising cost pressure. This leads to a increasing production complexity and growing requirements on Production Planning and Control (PPC). Digitalization’s direct links between objects, people, and machines as well as detailed recording of production progresses opens new solutions for PPC. However, volume of data and the required processing times are increasing. Thus, to achieve near-real-time data processing, a decentralization of decision-making systems can be observed. The function Material Requirements Planning (MRP) is PPC’s original need for Enterprise Resource Planning (ERP) systems. Here, PPC’s overall problem (to fulfil primary requirements for products) is divided into subproblems (to fulfil single production orders). Especially companies characterized by an organization in accordance to the workshop principle, high in-house production depth and variable CODP are confronted with high dynamics in their production systems. This ends in significant differences between primary requirements (overall problem) and single production orders (subproblems). Ultimately, these insufficient PPC data result systematically in a non-optimal overall solution despite optimal partial solutions. This publication combines PPC’s fundamentals from existing commonly known models with current implementation concepts of ERP systems. A newly developed Low-Level-Code based Production Model provides explanations for deviations between the overall problem and its subproblems. Furthermore, information flows of PPC can be structured between a periodically actualized vertical and an event driven horizontal information flow. These recognitions lead to an improvement of PPC by ERP systems.
Algebraic reformulation of Connes embedding problem and the free group algebra
Creators: name: Juschenko, Kate
name: Popovych, Stanislav
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L07, 46K50 (Primary) 16S15, 46L09, 16W10

description: We give a modification of I. Klep and M. Schweighofer algebraic reformulation of Connes' embedding problem by considering *-algebra of the countably generated free group. This allows to consider only quadratic polynomials in unitary generators instead of arbitrary polynomials in self-adjoint generators.
description: This is an old paper, which is already appeared in Israel J Math, 2011
Electrically tunable transverse magnetic focusing in graphene
Creators: name: Taychatanapat, Thiti
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Jarillo-Herrero, Pablo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electrons in a periodic lattice can propagate without scattering for macroscopic distances despite the presence of the non-uniform Coulomb potential due to the nuclei. Such ballistic motion of electrons allows the use of a transverse magnetic field to focus electrons. This phenomenon, known as transverse magnetic focusing (TMF), has been used to study the Fermi surface of metals and semiconductor heterostructures, as well as to investigate Andreev reflection, spin-orbit interaction, and to detect composite fermions. Here we report on the experimental observation of transverse magnetic focusing in high mobility mono-, bi-, and tri-layer graphene devices. The ability to tune the graphene carrier density enables us for the first time to investigate TMF continuously from the hole to the electron regime and analyze the resulting focusing fan. Moreover, by applying a transverse electric field to tri-layer graphene, we use TMF as a ballistic electron spectroscopy method to investigate controlled changes in the electronic structure of a material. Finally, we demonstrate that TMF survives in graphene up to 300 K, by far the highest temperature reported for any system, opening the door to novel room temperature applications based on electron-optics.
description: Nature Physics, accepted (published version contains only minor changes)
Abies
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: P. Abies (L.) H. Karsten (P. excelsa [Lam.] Link, P. vulgaris Link, Abies excelsa DC.) Cat. 408und 433. Vgl.SchröterLit. 1898. Bis 2310m: Outre-Rhone (Garns). 4: Verbreitung im Binntal: vgl. Binz Lit. 1908b, S. 11; geht hier bis 2250 m. Var. montana (Schur) - l: Unter Salvan (Coquoz); Outre-Rhone (Garns). Var. acuminata (Beck) -l: Mont-Ravoire (F.). -3: Valsorey (Guyot). Var. chlorocarpa (Purkyne) - 3: Val d'Anniviers (F.). Var. erythrocarpa (Purkyne) - 3: Val d'Anniviers (F.). Var. fennica (Regel) - 1-2: Mehrfach im Gebiet Martigny-Fully (Garns, F.). - 3: Mont-Chemin (F.); Aroley (F.); Valsorey (Guyot). - 4: Bettmeralp (Christ). Lus. viminalis (Sparrman) Sylven - 3: ZwischenNioucundVissoie(0. Meylan, F.). Lus. pendula (Lawson) Sylvén - l: Mont-Ravoire (F.). - 3: Valsorey (Guyot); Val d'Anniviers (Fankhauser, F.). Lus. virgata (Jacques) Rehder - 3: Val dAnniviers (F.). Lus. columnaris (Jacques) Sylvén - l: Col de Prelagine bei Tanay (F.); Mont-Ravoire (F.). - 2: Mayen du Tzou ob Ovronnaz (F.). - 3: Zwischen dem Col de la Forclaz und der Alpe de Prelayes (F.); ob Chemin (F.); Pre de la Jour ob Nendaz (F.); Val d'Anniviers (F.); bei Huteggen (Exk. Soc. Murith. l930).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Experimental entanglement distribution by separable states
Creators: name: Vollmer, Christina E.
name: Schulze, Daniela
name: Eberle, Tobias
name: Händchen, Vitus
name: Fiurasek, Jaromir
name: Schnabel, Roman
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The distribution of entanglement between macroscopically separated parties represents a crucial protocol for future quantum information networks. Surprisingly, it has been theoretically shown that two distant systems can be entangled by sending a third mediating system that is not entangled with either of them. Such a possibility seems to contradict the intuition that to distribute entanglement, the transmitted system always needs to be entangled with the sender. Here, we experimentally distribute entanglement by exchanging a subsystem and successfully prove that this subsystem is not entangled with either of the two parties. Our implementation relies on the preparation of a specific three-mode Gaussian state containing thermal noise that demolishes the entanglement in two of the three bipartite splittings. After transmission of a separable mode this noise can be removed by quantum interference. Our work demonstrates an unexpected variant of entanglement distribution and improves the understanding necessary to engineer multipartite quantum information networks.
description: 9 pages, 6 figures
Enhancing FAIR compliance: a controlled vocabulary for mapping Social Sciences survey variables
Creators: name: Saldanha Bach, Janete
name: Klas, Claus-Peter
name: Mutschke, Peter
Publisher: name: Zenodo
Year: 2023

description: In Social Sciences surveys, the dynamic relationship among study units and survey instruments like questionnaires, variables, questions, and response formats evolve. For instance, a longitudinal survey may feature different metrics for the same variable at various intervals, known as "waves." When reusing variables, researchers may need to modify variable attributes such as labels or names, question-wording or response scales. Therefore, offering a transparent explanation for these variable relations across different waves and studies is imperative. Although current methodologies use standards like Data Documentation Initiative – Lifecycle (DDI-LC) and DataCite to model these relationships, these frameworks fall short of capturing the complexity of variable relationships in Social Sciences. Existing DDI-controlled vocabularies for Commonality Type [[i]] employ codes—such as 'identical,' 'some,' and 'none'—to outline shifts in item elements like variables; however, this approach is insufficient for disambiguating these relationships since they are do not differentiate the variable attributes subject to change. To address this gap, we present the GESIS Controlled Vocabulary for Variables in Social Sciences Research Data [[ii]], as a first approach, which aims to enhance semantic interoperability across organizations and systems. This first approach is motivated in the context of the consortium KonsortSWD [[iii]] of the German National Research Data Infrastructure (NFDI) [[iv]]. It offers a concise textual identification for each variable relationship, supplemented by a detailed description to clarify the specifics of the relationship. These explicit relations facilitate harmonization across waves and enrich the data reuse by supporting search and browse functionality. The CV is published via the CESSDA vocabulary manager and aims to create a semantically rich, interconnected knowledge graph for Social Science Research, aligning with FAIR data principles.
[i]. DDI Alliance Controlled Vocabulary for Commonality Type. https://vocabularies.cessda.eu/vocabulary/CommonalityType?lang=en
[ii]. GESIS Controlled Vocabulary for Variables relations for Social Sciences research data. https://vocabularies.cessda.eu/vocabulary/Variables-Relations?lang=en
[iii]. KonsortSWD (Consortium for the Social, Behavioural, Educational and Economic Sciences) is funded by the National Research Data Infrastructure (NFDI) https://www.konsortswd.de/
[iv]. German National Research Data Infrastructure (NFDI) Homepage: https://www.nfdi.de/
description: The service is part of KonsortSWD project deliverable, NFDI funding number 442494171.
Nernst Effect as a Probe of Local Kondo Scattering in Heavy Fermions
Creators: name: Sun, Peijie
name: Steglich, Frank
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A large, strongly temperature-dependent Nernst coefficient, $ν$, is observed between $T$ = 2 K and 300 K for CeCu$_2$Si$_2$ and Ce$_{0.8}$La$_{0.2}$Cu$_2$Si$_2$. The enhanced $ν(T)$ is determined by the asymmetry of the on-site Kondo (conduction electron$-4f$ electron) scattering rate. Taking into account the measured Hall mobility, $μ_H$, the highly unusual thermopower, $S$, of these systems can be semiquantitatively described by $S(T)$ $=$ $-$$ν(T)/μ_H(T)$, which explicitly demonstrates that the thermopower originates from the local Kondo scattering process over a wide temperature range from far above to well below the coherence temperature ($\approx$ 20 K for CeCu$_2$Si$_2$). Our results suggest that the Nernst effect can act as a proper probe of local charge-carrier scattering. This promises an impact on exploring the unconventional enhancement of the thermopower in correlated materials suited for potential applications.
description: 10 pages, 2 Figures
Liquid metals for solar power systems
Creators: name: Flesch, J.
name: Niedermeier, K.
name: Fritsch, A.
name: Musaeva, D.
name: Marocco, L.
name: Uhlig, R.
name: Baake, E.
name: Buck, R.
name: Wetzel, T.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2017
Subjects: subject: Heat transfer
subject: Liquid metals
subject: Metals
subject: Sodium
subject: Solar energy
subject: Concentrated solar power
subject: Helmholtz
subject: High-efficiency
subject: Liquid sodium
subject: Spray fires
subject: System simulations
subject: Liquids
subject: Konferenzschrift
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: The use of liquid metals in solar power systems is not new. The receiver tests with liquid sodium in the 1980s at the Plataforma Solar de Almer a (PSA) already proved the feasibility of liquid metals as heat transfer fluid. Despite the high efficiency achieved with that receiver, further investigation of liquid metals in solar power systems was stopped due to a sodium spray fire. Recently, the topic has become interesting again and the gained experience during the last 30 years of liquid metals handling is applied to the concentrated solar power community. In this paper, recent activities of the Helmholtz Alliance LIMTECH concerning liquid metals for solar power systems are presented. In addition to the components and system simulations also the experimental setup and results are included.
Resonant pulsed electromagnetic stirring of melt for effective grain fragmentation
Creators: name: Köppen, D.
name: Baake, E.
name: Gerstein, G.
name: Mrówka-Nowotnik, G.
name: Jarczyk, G.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: electromagnetic stirring
subject: grain fragmentation
subject: neutron radiography
subject: process imaging
subject: solidification
subject: Aluminum alloys
subject: Magnetic fields
subject: Neutron radiography
subject: Solidification
subject: 6082 Aluminium alloys
subject: Alternating magnetic field
subject: Crystalloid structure
subject: Directionally solidified
subject: Electromagnetic stirring
subject: Experimental research
subject: Grain fragmentation
subject: Solid/liquid interfaces
subject: Magnetic materials
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The paper describes the results of an experimental research, demonstrating and explaining the effect of grain fragmentation, caused by pulsed resonant electromagnetic stirring. In the experiments, 6082 aluminium alloy melt was directionally solidified under the influence of continuous (AMF) and pulsed application (PMF) of an alternating magnetic field. The frequency of applied PMF was in accordance to the low-frequency circulation of the melt, causing the resonant increase of a pulsed component of the melt velocity. The structure of electromagnetically stirred specimens was compared to those, solidified without a magnetic field. A strong fragmentation effect (decrease of an average grain size on 51%, comparing with the solidification in natural conditions) for the case of resonant EM stirring was stated. Further, to analyse the influence of the flow, appearing due to the resonant stirring, we observed the formation of solid/liquid interface and a macro-crystalloid structure during solidification of continuously and pulsed stirred melt by applying the novel method of neutron radiography. The results confirmed the strong influence of the pulsed component of velocity on thermal conditions during solidification and, consequently, the metal structure.
Basic study on the influence of glass composition and aluminum content on the Ag/Al paste contact formation to boron emitters
Creators: name: Kroener, S.
name: Kiefer, F.
name: Peibst, R.
name: Heinemeyer, F.
name: Kruegener, J.
name: Eberstein, M.
Publisher: name: Amsterdam : Elsevier Science BV
Year: 2015
Subjects: subject: n-type solar cell
subject: front-side metallization
subject: glass viscosity
subject: aluminum content
subject: in-situ-contact resistance
subject: si solar-cells
subject: Konferenzschrift
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft::333 | Boden- und Energiewirtschaft::333,7 | Natürliche Ressourcen, Energie und Umwelt

description: In this study, the contact formation of aluminum containing silver metallization pastes for boron emitters was investigated. Model pastes with varied glass composition (PbO-containing and PbO-free) and Al content were prepared. It was found, that glass viscosity as well as Al content have a strong influence on densification behavior of the pastes. The most significant effect of the aluminum addition is the change of the thermodynamic conditions in the system silver-glass-silicon. For investigations of the contact formation an in-situ-contact resistance measurement was performed. The interface morphology of the pastes in dependence on the firing temperature was investigated by means of cross section samples in SEM and EDX. Finally, n-type Si solar cells were electrically characterized and the IV-data were correlated to the interface morphology. (C) 2015 The Authors. Published by Elsevier Ltd.
Improving Energy Efficiency in MANETs by Multi-Path Routing
Creators: name: Nasehi, Hassanali
name: Javan, Nastooh Taheri
name: Aghababa, Amir Bagheri
name: Birgani, Yasna Ghanbari
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Some multi-path routing algorithm in MANET, simultaneously send information to the destination through several directions to reduce end-to-end delay. In all these algorithms, the sent traffic through a path affects the adjacent path and unintentionally increases the delay due to the use of adjacent paths. Because, there are repetitive competitions among neighboring nodes, in order to obtain the joint channel in adjacent paths. The represented algorithm in this study tries to discover the distinct paths between source and destination nodes with using Omni directional antennas, to send information through these simultaneously. For this purpose, the number of active neighbors is counted in each direction with using a strategy. These criterions are effectively used to select routes. Proposed algorithm is based on AODV routing algorithm, and in the end it is compared with AOMDV, AODVM, and IZM-DSR algorithms which are multi-path routing algorithms based on AODV and DSR. Simulation results show that using the proposed algorithm creates a significant improvement in energy efficiency and reducing end-to-end delay.
Should My Take-Away Packaging Be Reusable? An Empirical Study Of Consumer Behaviour Towards Returnable Food Packaging In Germany
Creators: name: Breuer, Laura Marie
name: Fischer, Silvia Berenice
name: Terlau, Wiltrud
Publisher: name: Proceedings in Food System Dynamics
Year: 2024

description: Since the new German packaging law 'VerpackG2' came into force in January 2023, German foodservice operators selling food to-go are required to provide reusable packaging alternatives to their single-use plastic food packaging. This change in legislation has led to the emergence of various reusable consumer packaging systems in the German market. Reusable packaging systems have the potential to significantly reduce the negative environmental impact of single-use plastic packaging. However, for these systems to be successful and achieve their desired positive environmental impact, also a comprehensive understanding of consumer behaviour towards these systems is needed. This study extends the Theory of Planned Behaviour (TPB) framework to identify the factors influencing consumers' intentions to use a reusable packaging system for takeaway food in the German foodservice industry. An online survey was developed and 153 valid responses were collected from consumers in Germany. Structural equation modelling revealed that consumers' personal moral norms, attitudes, subjective norms and perceived behavioural control directly influence consumers' intentions to use the reusable packaging system in this study. The results also show that context, motivation and personal moral norms are positively related to consumers' attitudes and that context has a significant positive effect on consumers' perceived behavioural control. Furthermore, the results of the study indicate that despite the high frequency of takeaway food orders in Germany, consumers' use of reusable packaging systems for takeaway food still needs to be improved.
description: Proceedings in Food System Dynamics, Proceedings in System Dynamics and Innovation in Food Networks 2024
Performance Modelling and Analysis of Connection Admission Control in OFDMA based WiMAX System with MMPP Queuing
Creators: name: Bouchti, Abdelali El
name: Kafhali, Said El
name: Haqiq, Abdelkrim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: This paper presents a problem of queuing theoretic performance modeling and analysis of Orthogonal Frequency Division Multiple Access (OFDMA) under broad-band wireless networks. We consider a single-cell WiMAX environment in which the base station allocates sub channels to the subscriber stations in its coverage area. The sub channels allocated to a subscriber station are shared by multiple connections at that subscriber station. To ensure the Quality of Service (QoS) performances, two Connection Admission Control (CAC) schemes, namely, threshold-based and queue-aware CAC schemes are considered at a subscriber station. A queuing analytical framework for these admission control schemes is presented considering OFDMA-based transmission at the physical layer. Then, based on the queuing model, both the connection-level and the packetlevel performances are studied and compared with their analogues in the case without CAC. The connection arrival is modeled by a Poisson process and the packet arrival for a connection by a Markov Modulated Poisson Process (MMPP). We determine analytically and numerically different performance parameters, such as connection blocking probability, average number of ongoing connections, average queue length, packet dropping probability, queue throughput and average packet delay.
description: 9 pages. arXiv admin note: substantial text overlap with arXiv:1203.4339
Cluster-based contextual recommendations
Creators: name: Stefanidis, Kostas
name: Ntoutsi, Eirini
Publisher: name: Konstanz : OpenProceedings.org
Year: 2016
Subjects: subject: Clustering algorithms
subject: Collaborative filtering
subject: Database systems
subject: Cluster-based
subject: Context situations
subject: Contextual recommendations
subject: Data items
subject: Query context
subject: Sub-Space Clustering
subject: Query processing
subject: Konferenzschrift
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: In this work, we address the problem of contextual recommendations by exploiting the concept of subspace clustering. Specifically, we pre-partition users that have rated subsets of data items similarly into clusters and we associate a context situation with each cluster. The cluster context is defined as any internally stored information that can be used to characterize the cluster members per se. Then, given a query context, we identify the clusters with the most similar context, and we use their members for making suggestions in a collaborative filtering manner. © 2016, Copyright is with the authors.
Design of an one-sided transverse flux induction coil by using a numerical optimization algorithm
Creators: name: Schulze, M.
name: Nikanorov, A.
name: Nacke, B.
Publisher: name: Bristol : Institute of Physics Publishing
Year: 2018
Subjects: subject: induction heat treatment
subject: numerical optimization
subject: one-sided transverse flux heating
subject: strip heating
subject: Induction heating
subject: Optimal systems
subject: Optimization
subject: Electrical efficiency
subject: Numerical optimization algorithms
subject: Numerical optimizations
subject: Optimization techniques
subject: Strip production
subject: Target temperature
subject: Thin steel strip
subject: Transverse flux
subject: Magnetic materials
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The transverse flux heating (TFH) concept offers very high electrical efficiency in combination with unique technological flexibility. Numerous advantages make this method beyond competition to be applied in e.g. continuous strip production and processing lines. However, all potential advantages of TFH can be realized in practice only by optimal design of the inductor shape and optimal control of the heaters, using numerical modelling and optimization techniques. The paper describes a successive approach to optimal design of a single layer induction coil, which will be used for onesided TFH of moving thin steel strip with constant width. The peculiarity of the design refers to the very slow movement speed of the strip and the target temperature, which is set below Curie.
Magnetic Field Driven Electronic Singularities through Metamagnetic Phenomena: Case of the Heavy Fermion Antiferromagnet Ce(Ru0.92Rh0.08)2Si2
Creators: name: Machida, Yo
name: Izawa, Koichi
name: Aoki, Dai
name: Knebel, Georg
name: Pourret, Alexandre
name: Flouquet, Jacques
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Thermoelectric power measurements on the heavy fermion antiferromagnet Ce(Ru0.92Rh0.08)2Si2 under magnetic field (H) show clearly that the antiferromagnetic state below the critical field Hc ~ 2.8T can be fully decoupled from the pseudo-metamagnetic crossover at Hm ~ 5.8T which occurs when the magnetization reaches a critical value. By contrast to the weak field variation of the Sommerfeld coefficient of the specific heat in the field window from Hc to Hm, two electronic singularities with opposite signs are detected in the thermoelectric power. The interplay between the magnetic instability and the topological change of the Fermi surface is discussed and we argue similarities to other field instabilities in various heavy fermion compounds.
description: 6 pages, 7 figures, accepted for publication in J. Phys. Soc. Jpn
Bianchi type V bulk viscous cosmological models with particle creation in General Relativity
Creators: name: Zeyauddin, Mohd.
name: Saha, Bijan
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper, a spatially homogeneous and anisotropic Bianchi type V model filled with an imperfect fluid with bulk viscosity and particle creation, is investigated within the framework of General Relativity. Particle creation and bulk viscosity have been considered as separate irreversible processes. The energy- momentum tensor is modified to accommodate the viscous pressure and creation pressure which is associated with creation of matter out of gravitational field. Exact solutions of the field equations are obtained by applying a special law of variation of Hubble parameter. Using this assumption, we obtain two types of cosmological models. We find a singularity in the first model whereas second model is non-singular. Further we separately study the bulk viscosity and particle creation in each model considering four different cases. The bulk viscosity coefficient $ζ$ is obtained for Truncated, Full Causal and Eckart theories in all cases. All physical parameters are calculated and thoroughly discussed in both models.
description: 23 pages, 32 Figures
Thermodynamic properties of a diluted Heisenberg ferromagnet with interaction anisotropy -- magnetocaloric point of view
Creators: name: Szałowski, Karol
name: Balcerzak, Tadeusz
name: Bobák, Andrej
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The thermodynamics of a site-diluted ferromagnetic Heisenberg model for spin $S=1/2$ with interaction anisotropy in spin space is investigated. The study is aimed at presenting the magnetocaloric properties of such a model, including the entropy and temperature changes in magnetization/demagnetization processes, generalized Grüneisen ratio as well as the quantities characterizing the efficiency of magnetic cooling cycles. The results are obtained using Pair Approximation (PA) method and extensively compared with the Molecular Field Approximation (MFA) calculations. The importance of interaction anisotropy and site-dilution is discussed. The inadequacy of the MFA approach (even on the qualitative level) is found for selected quantities, while PA provides the results which are consistent with the experimentally observed behaviour.
Populus alba
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: A. alba Miller (A. pectinata [Lam.] DC.) Cat. 409. Bis 2040m. l: Evionnaz-Cocorier (F.); Les IVIarecottes (J.); Outre-Rhone (F., Garns). - 2: Ob Branson und ob Fully, alsKrüppel bis2040m (Garns); Eingang des Lötschentales (idem). - 3: Mont-Chemin, zwischen 1000 und 1100 m eine ziemlich ausgedehnte Zone bildend, desgleichen ob Le Guercet, vereinzelt herabsteigend an den FUSS des Berges zwischen Le Guercet und Charrat (F.); NordhängedesCatogne (J.); «GrandeForet» bei Sembrancher(J.); zwischenSidersundVisp,anden Hängen zwischen 900 und 1500 m (Hess); Gegend von Visp (Hess); Visp-Zeneggen (Garns, Becherer);Törbel (Stehler). - 3a:Laggintal,selten:linkeSeitedesTristelgrabensundgegendas «Guggeli»;Gondoschlucht,Alpien und Seehorn,mehrfach, auf Alpien bis etwa 1850m steigend; unterhalb von Gondo gegen die italienische Grenze; Zwischbergental: auf beiden Talseiten mehrfach; im Gebiet Camozellalp-Cagrande bis etwa 1900 m gehend und hier sich mit Pinus Cembra treffend. (Alles: Becherer 1942-1943; vgl. Becherer Lit. 1943, S. 43-44 und 59.) - 4:Twingen im Binntal (Schmid 1940). Lus.tuberculataBadoux- 3:Illalp-Pletschen (Wille).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556