cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of electrically aligned polycrystalline diamond flakes on the through-plane thermal conductivity of heat conduction sheets
Creators: name: Inaba, Masafumi
name: Seike, Seiya
name: Chen, Yingchen
name: Ichiki, Soichiro
name: Kubota, Yoshihiko
name: Ohmagari, Shinya
name: Nakano, Michihiko
name: Suehiro, Junya
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Information Systems not elsewhere classified
subject: Marine Biology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Heat conduction sheets, which are composed of a thermally conductive filler and a base elastomer matrix, are important for dissipating heat from devices to a heat sink. Alignment of the heat-conducting two-dimensional filler particles enhances the thermal conductivity of the heat conduction sheet. In this study, we prepared polycrystalline diamond (PCD) flakes and then electrically aligned the PCD flakes in the through-plane direction of heat conduction sheet samples. The PCD flakes were fabricated by pulverizing a synthesized PCD thin layer. The typical size of the PCD flakes was ∼1 μm in thickness and ∼35 μm in diameter. The PCD flakes were electrically aligned in a polydimethylsiloxane (PDMS) matrix by applying alternating high voltage with parallel-plate electrodes. The heat conduction sheet containing 20 wt% aligned PCD flakes in the matrix exhibited high through-plane thermal conductivity of 0.47 W m−1 K−1, while that of the heat conduction sheet with aligned granular diamond filler particles was 0.37 W m−1 K−1. The high thermal conductivity comes from the formation of a large contact area between the filler particles and flake network by electrical alignment in the heat conduction sheet.
Potential role of Triggering Receptor Expressed on Myeloid Cells-1 (TREM-1) in SARS-CoV-2 infection: First insights
Creators: name: De Sá Resende, Ayane
name: Matos De Oliveira, Yrna Lorena
name: Rodrigues De Moura, Tatiana
name: Martins-Filho, Paulo Ricardo
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors, Dortmund
Year: 2021
Subjects: COVID-19
SARS-CoV-2
Triggering Receptor Expressed on Myeloid Cells-1

description: EXCLI Journal; 20:Doc722; ISSN 1611-2156
Modified Structure of Protons and Neutrons in Correlated Pairs
Creators: name: Schmookler, B.
name: Duer, M.
name: Schmidt, A.
name: Hen, O.
name: Gilad, S.
name: Piasetzky, E.
name: Strikman, M.
name: Weinstein, L. B.
name: Collaboration, The CLAS
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The atomic nucleus is made of protons and neutrons (nucleons), that are themselves composed of quarks and gluons. Understanding how the quark-gluon structure of a nucleon bound in an atomic nucleus is modified by the surrounding nucleons is an outstanding challenge. Although evidence for such modification, known as the EMC effect, was first observed over 35 years ago, there is still no generally accepted explanation of its cause. Recent observations suggest that the EMC effect is related to close-proximity Short Range Correlated (SRC) nucleon pairs in nuclei. Here we report the first simultaneous, high-precision, measurements of the EMC effect and SRC abundances. We show that the EMC data can be explained by a universal modification of the structure of nucleons in neutron-proton (np) SRC pairs and present the first data-driven extraction of this universal modification function. This implies that, in heavier nuclei with many more neutrons than protons, each proton is more likely than each neutron to belong to an SRC pair and hence to have its quark structure distorted.
description: Published in Nature. Total: 21 pages, 9 figures, 10 tables. Main text: 7 pages, 4 figures. Methods section: 1 page. Extended Data: 1 figure, 3 table. Supplementary Materials: 11 pages, 4 figures, 7 tables
Liste d'analyses en laboratoire pour l'évaluation de la qualité du sol
Creators: name: European Organization for Nuclear Research
Publisher: name: Zenodo
Year: 2024
Subjects: soil
environment
agriculture
analysis

description: Ce document présente la liste d’analyses de sol en laboratoire visant à comprendre le potentiel agronomique des terres agricoles, la possibilité d'améliorer l'état des sols arables ou de restaurer leur fonctionnalité et d'évaluer la performance de la molasse traitée pour l'application en agriculture et sylviculture. Ces analyses peuvent également être utilisées pour connaître l'état des sols sur les friches ou sites pollués.

Les analyses de la qualité des sols doivent être adaptées à l'usage visé.
Shear-promoted graphite-to-diamond phase transition at the grain boundary of nanocrystalline graphite
Creators: name: Guo, Dezhou
name: Luo, Kun
name: An, Qi
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Computational Biology

description: High pressure has traditionally been considered essential for the transformation of graphite into diamond. However, reducing the transition pressure required for this graphite-to-diamond (G2D) conversion holds significant appeal in both scientific research and engineering applications. In this study, we conducted large-scale molecular dynamics (MD) simulations using an environment-dependent interaction potential (EDIP) to examine the shear deformation of nanocrystalline graphite (n-graphite) with a grain size of approximately 6.5 nm. We discovered that the G2D transition pressure in n-graphite can be reduced to 2–3 GPa, significantly lower than the ∼90 GPa uniaxial stress required in crystalline graphite. This reduction is primarily due to concentrated local shear stresses at grain boundaries (GBs), which induce substantial rotations of graphite layers. These rotations facilitate the initial formation of diamond bonds at sites of pre-existing imperfections at the GBs, assisted by shear. Once initiated at the GBs, the G2D transition rapidly propagates within grains aligned parallel to the shear components, resulting in the formation of nanocrystalline diamond. Our findings underscore the critical roles of GBs and shear stress in enabling the G2D transition in n-graphite.
Anticancer activity of 20(s) protopanaxadiol on cancer cells
Creators: name: Zhao, Yan
Publisher: name: University of British Columbia
Year: 2009

description: Current anticancer therapy is often ineffective resulting in tumor relapse due to factors including multiple drug resistance and minimal residual diseases. In this study, 20(S)-protopanaxadiol (aPPD), one of the aglycone metabolic products of ginsenosides in human gastrointestinal tract, has been characterized and shows strong anticancer anticancer activities. It can induces apoptosis in glioma and other cancer cells through multiple apoptotic pathways, and synergistically enhances the efficacy of chemotherapeutic drugs in multi-drug resistant cancer cells. The ability of aPPD to reverse p-glycoprotein (p-gp) mediated multidrug resistance was determind, aPPDresistant glioma cell lines were established and the difference of the gene expression profiles of both aPPD resistant and sensitive cell lines was exhibited. The results showed that aPPD inhibits the activity of P-gp in multiple drug resistant cell lines MCF-7adr and P388adr through a mechanism that is different from that of verapamil, a typical P-gp blocker. The aPPD-resistant glioma SF188C2R2 cells displayed crossresistance to several chemotherapeutics and lost the ability of G2-arrest caused by aPPD in the parental cells. Gene expression profiles of resting SF188 and SF188C2R2 are very different than in cells treated with aPPD. Fifty-eight percent of genes were differentially expressed in these two cell lines at resting status. In the presence of aPPD, SF188 had 10-fold more genes changed in their expression than in SF188C2R2. These results demonstrated that this compound has the potential to be developed as an anti-cancer drug for clinical application. Further analysis of validated gene expression profdes of the SF188 and its aPPD-resistant cell line SF188C2R2 may reveal the mechanisms of anticancer effects by aPPD.
Feasibility study of a Laue lens for hard X-rays for space astronomy
Creators: name: Pisa, A.
name: Frontera, F.
name: De Chiara, P.
name: Loffredo, G.
name: Pellicciotta, D.
name: Landini, G.
name: Franceschini, T.
name: Silvestri, S.
name: Andersen, K.
name: Courtois, P.
name: Hamelin, B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We report on the feasibility study of a Laue lens for hard X-rays (>60 keV)based on mosaic crystals, for astrophysical applications. In particular we discuss the scientific motivations, its functioning principle, the procedure followed to select the suitable crystal materials, the criteria adopted to establish crystal dimensions and their distribution on the lens in order to obtain the best lens focusing capabilities, and the criteria for optimizing the lens effective area in a given passband. We also discuss the effects of misalignments of the crystal tiles due to unavoidable mechanical errors in assembling the lens. A software was developed to face all these topics and to evaluate the expected lens performance.
description: 10 pages, corrected Fig. 1b and Fig. 2, which are wrong in the published version, corrected typos
DER NORDWESTDEUTSCHE VIEHHANDEL IN ZEITEN ZUNEHMENDER INTERNA-TIONALISIERUNG – SITUATION UND WETTBEWERBSFÄHIGKEIT
Creators: name: Recke, Guido
name: Theuvsen, Ludwig
name: Venhaus, Nadine
name: Voss, Anja
name: Recke, Guido
name: Theuvsen, Ludwig
name: Venhaus, Nadine
name: Voss, Anja
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Consumer/Household Economics
subject: Environmental Economics and Policy
subject: Farm Management
subject: Financial Economics
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Viehhandel
subject: Außenhandel
subject: Schlüsselqualifikationen
subject: Vermarktungsorganisation
subject: Wettbewerbsfähigkeit

description: Der grenzüberschreitende Handel mit Schlacht- und Nutzvieh ist in den vergangenen Jahren erheblich ausgebaut worden. Vor allem die Handelsströme zwischen der nordwestdeutschen Veredelungsregion sowie den Niederlanden und Dänemark sind stark angeschwollen. Auffäl-lig ist, dass der nordwestdeutsche Viehhandel, der national eine wichtige Rolle in der Fleisch-wirtschaft spielt, an dieser Entwicklung kaum partizipiert. Vor diesem Hintergrund ist es das Ziel dieses Beitrags, gestützt auf empirische Untersuchungen von Viehhandelsunternehmen strukturelle, personalwirtschaftliche sowie weitere Gründe für die offenbar geringe Wettbewerbsfähigkeit des deutschen Viehhandel im grenzüberschreitenden Handel mit Schlacht- und Nutzvieh aufzudecken. Auf der Grundlage der empirischen Befunde werden Handlungsempfehlungen zur Verbesserung der Wettbewerbsfähigkeit des deutschen Viehhandels abgeleitet.
Josephson $π$-state in superconductor-Luttinger liquid hybrid systems
Creators: name: Yokoshi, Nobuhiko
name: Kurihara, Susumu
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Josephson current through a Luttinger liquid (LL) under a magnetic field is theoretically studied. We derive an analytical expression of Josephson current for clean interfaces, by using quasiclassical Green's function and functional bosonization procedure. We show that critical currents can be renormalized by electron-electron interactions at perfect transparency when LL is adiabatically connected with superconductors. We also find that a generation of $π$-state, due to spin-dependent energy shift in Andreev bound states (ABS), is prohibited even at zero temperature when the strength of repulsive interactions reaches some critical value. The suppression of $π$-state is caused by the low energy fluctuations propagating in LL, and making the Zeeman splitting in ABS blurred.
description: 5 pages, 4figures
Skyrmion Mass from Spin-Phonon Interaction
Creators: name: Capic, D.
name: Chudnovsky, E. M.
name: Garanin, D. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Inertial mass of a skyrmion arising from spin-phonon interaction is computed exactly within a toy model of the magnetoelastic coupling in a ferromagnetic film. The mass scales as the square of the strength of the magnetoelastic coupling, as the square of the film thickness, and as the first power of the lateral size of the skyrmion. For nanometer skyrmions it is in the ballpark of a few electron masses but may be significantly greater in materials with large magnetostriction. These findings are expected to stand for any complex structure of spin-phonon interaction in real materials. They must be taken into account when addressing the speed of information processing based upon skyrmions.
description: 4 PR pages, 1 figure
CO2-VERMEIDUNGSKOSTEN DER STROM- UND WÄRMEPRODUKTION AUS BIOGAS
Creators: name: Scholz, Lukas
name: Meyer-Aurich, Andreas
name: Kirschke, Dieter
name: Scholz, Lukas
name: Meyer-Aurich, Andreas
name: Kirschke, Dieter
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Demand and Price Analysis
subject: Environmental Economics and Policy
subject: Farm Management
subject: Financial Economics
subject: Bioenergie
subject: Biogas
subject: ökonomische Analyse
subject: CO2-Vermeidungskosten

description: In einer Studie wurden die volkswirtschaftlichen Kosten verschiedener Produktionsverfahren und Szenarien der Strom- und Wärmeproduktion aus Biogas auf der Basis von Mais und Rindergülle untersucht. Gemessen an alternativen Maßnahmen, verursacht die staatliche Förderung der Bioenergieproduktion aus Biogas, durch das Erneuerbare-Energien-Gesetz (EEG), hohe volkswirtschaftliche Kosten. Die CO2-Vermeidungkosten variieren zwischen 289 und 691 €/t CO2äq in den untersuchten Produktionsverfahren und Szenarien. Der Subventionsaufwand beläuft sich auf 310 bis 596 €/t CO2äq.
Preferential orientation of diamond formation on TaC: Diamond(111)//TaC(111)
Creators: name: Lu, Shaohua
name: Zhang, Xiongtao
name: Zheng, Yuhao
name: Jiang, Meiyan
name: Chen, Chengke
name: Hu, Xiaojun
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Statistics
subject: FOS: Mathematics

description: Experimental results showed that for the diamond film prepared by hot filament chemical vapor deposition (HFCVD) using Ta filament, TaC existed between diamond and the silicon substrate, and diamond grew directly on TaC, while the inherent mechanism was not clear. Here, a special coherent interface Diamond(111)//TaC(111) is observed using high resolution transmission electron microscopy, and then we explore the effects of the TaC with different lattice planes on the diamond formation by first-principle calculations. The results show that C tends to adsorb on the TaC(111) C-terminated surface. The strong covalent bond between C from diamond and Ta from TaC is formed in the Diamond(111)//TaC(111) interface, while only C–C covalent bonds are formed at the Graphite(002)/TaC(111). This makes diamond thermodynamically more stable than graphite on the TaC surfaces. Our investigations provide critical information to understand the complex diamond formation mechanism, especially with the presence of TaC.
In My Backyard - snapshot
Creators: name: Wolniewicz, Gosia
Publisher: name: Zenodo
Year: 2021

description: The project aims to understand and map the use of pesticides and fertilizers and sustainable alternative practices in the context of home farming and gardening. Simultaneously, it aims to disseminate information on the topic with the final aim of reducing the use of pesticides and fertilizers.
description: Research Object in Rohub2020: https://rohub2020-rohub.apps.paas-dev.psnc.pl/api/ros/bddb9606-0eff-433e-8a0e-151d273fcc36/
ANALYSE DER KORRELATIONSKOEFFIZIENTEN FÜR DEN EINSATZ VON WETTERDERIVATEN
Creators: name: Schulte-Geers, Matthias
name: Trenkel, Hermann
name: Schulte-Geers, Matthias
name: Trenkel, Hermann
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Farm Management
subject: Financial Economics
subject: Industrial Organization
subject: Institutional and Behavioral Economics
subject: Wetterderivate
subject: Korrelation

description: Die Eignung von Wetterderivaten als Risikomanagementinstrument ist zum einen vom Produktionsbasisrisiko und geographischen Basisrisiko und zum anderen vom gesamtbetrieblichen Portfolio abhängig. In dieser Arbeit sollen bezüglich des ersten Aspektes exemplarisch die sich verändernden Einflüsse von Niederschlagssummen auf einen Kartoffelbestand untersucht werden, wobei die Zeiträume über das Jahr hinweg, sowie die Orte der Indexerhebung variiert werden, und die resultierenden Korrelationskoeffizienten anhand von statistischen Tests auf Signifikanz überprüft werden.
${\mathbb Z}_2\times {\mathbb Z}_2$-graded parastatistics in multiparticle quantum Hamiltonians
Creators: name: Toppan, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The recent surge of interest in ${\mathbb Z}_2\times {\mathbb Z}_2$-graded invariant mechanics poses the challenge of understanding the physical consequences of a ${\mathbb Z}_2\times{\mathbb Z}_2$-graded symmetry. In this paper it is shown that non-trivial physics can be detected in the multiparticle sector of a theory, being induced by the ${\mathbb Z}_2\times{\mathbb Z}_2$-graded parastatistics obeyed by the particles. The toy model of the ${\cal N}=4$ supersymmetric/ ${\mathbb Z}_2\times {\mathbb Z}_2$-graded oscillator is used. In this set-up the one-particle energy levels and their degenerations are the same for both supersymmetric and ${\mathbb Z}_2\times{\mathbb Z}_2$-graded versions. Nevertheless, in the multiparticle sector, a measurement of an observable operator on suitable states can discriminate whether the system under consideration is composed by ordinary bosons/fermions or by ${\mathbb Z}_2\times {\mathbb Z}_2$-graded particles. Therefore, ${\mathbb Z}_2\times {\mathbb Z}_2$-graded mechanics has experimentally testable consequences. Furthermore, the ${\mathbb Z}_2\times {\mathbb Z}_2$-grading constrains the observables to obey a superselection rule. As a technical tool, the multiparticle sector is encoded in the coproduct of a Hopf algebra defined on a Universal Enveloping Algebra of a graded Lie superalgebra with a braided tensor product.
description: 37 pages
Fabrication of nitrogen-doped quenched-produced diamond electrodes on titanium substrates by coaxial arc plasma deposition
Creators: name: Nagano, Satoki
name: Naragino, Hiroshi
name: Hashiguchi, Hiroki
name: Hokazono, Shunsuke
name: Osman, Lama
name: Diab, Mohamed Ragab
name: Zkria, Abdelrahman
name: Yoshitake, Tsuyoshi
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Plant Biology

description: Nitrogen-doped quenched-produced diamond (N-doped Q-dia) thin films were deposited onto a titanium substrate by coaxial arc plasma deposition (CAPD). The N-doped Q-dia thin film was successfully synthesized at room temperature without peeling. Its performance as an electrode material in aqueous solutions was investigated. The overpotential for the hydrogen evolution reaction was 0.35 V higher than the conventional boron-doped diamond (BDD) electrode. The kinetics of reversible electron transfer for redox species were comparable to the BDD electrode. We have demonstrated the N-doped Q-dia thin films have promising potential as a competitive and alternative electrode material to BDD films for electrochemical applications.
title: Intelligent prefetching for a grid-enabled distributed system : improving web access for a distributed grid system by enabling browser downloads combined with machine learning based prefetching and caching techniques
Creators: name: Prenner, Stefan
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Machine Learning
subject: Vorhersagemodell
subject: Klassifizierung
subject: Web Prefetching
subject: ATLAS
subject: Rucio
subject: Verteiltes Datenmanagement
subject: Benutzeroberfläche
subject: Machine Learning
subject: Web Prefetching
subject: Classification
subject: Prediction model
subject: ATLAS
subject: Distributed Data Management
subject: Rucio
subject: User Interface

description: Großflächige Gridsysteme, wie das CERN Worldwide LHC Computing Grid (WLCG), haben oft mit Problemen zu kämpfen, die sich aus einer Vielzahl von heterogenen Speichereinheiten ergeben. Mögliche Probleme umfassen unter anderem komplizierte Zugriffsmechanismen wegen unterschiedlicher Protokolle und ineffiziente Nutzung von Speicherressourcen. Im Rahmen dieser Arbeit wird die Frage des Umgangs mit unterschiedlichen Zugriffsprotokollen bei Browser-Downloads für Rucio, das verteilte Datenmanagementsystem von ATLAS, untersucht und ein Prototyp für Machine Learning-basiertes Prefetching mit Rucio-Daten entwickelt. Simulationsergebnisse zeigen, dass im Vergleich zu statischen Prefetching-Techniken mit einem Random Forest Klassifikator eine Erhöhung der Cache-Trefferrate von bis zu 20% erreicht werden kann.
description: Large-scale grid systems, such as the CERN Worldwide LHC Computing Grid (WLCG), often have to deal with problems arising from a variety of heterogeneous storage units. Potential issues include complicated access due to different protocols, inefficient use of storage resources and many more. In the course of this thesis, the problem of dealing with different access protocols when handling browser downloads is solved for Rucio, the ATLAS distributed data management system, and a proof of concept for machine learning based prefetching is being developed using Rucio data. Simulation results show that, compared to static prefetching techniques, cache hit rate increases of up to 20% can be achieved with a Random Forest classifier.
Correlation-induced suppression of decoherence in capacitively coupled Cooper-pair boxes
Creators: name: You, J. Q.
name: Hu, Xuedong
name: Nori, Franco
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Charge fluctuations from gate bias and background traps severely limit the performance of a charge qubit in a Cooper-pair box (CPB). Here we present an experimentally realizable method to control the decoherence effects of these charge fluctuations using two strongly capacitively coupled CPBs. This coupled-box system has a low-decoherence subspace of two states. Our results show that the inter-box Coulomb correlation can help significantly suppress decoherence of this two-level system, making it a promising candidate as a logical qubit, encoded using two CPBs.
description: 5 pages, 2 figures. Phys. Rev. B, in press
Active Voice Authentication
Creators: name: Meng, Zhong
name: Altaf, M Umair Bin
name: Biing-Hwang
name: Juang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Machine Learning (cs.LG)
subject: Sound (cs.SD)
subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Active authentication refers to a new mode of identity verification in which biometric indicators are continuously tested to provide real-time or near real-time monitoring of an authorized access to a service or use of a device. This is in contrast to the conventional authentication systems where a single test in form of a verification token such as a password is performed. In active voice authentication (AVA), voice is the biometric modality. This paper describes an ensemble of techniques that make reliable speaker verification possible using unconventionally short voice test signals. These techniques include model adaptation and minimum verification error (MVE) training that are tailored for the extremely short training and testing requirements. A database of 25 speakers is recorded for developing this system. In our off-line evaluation on this dataset, the system achieves an average windowed-based equal error rates of 3-4% depending on the model configuration, which is remarkable considering that only 1 second of voice data is used to make every single authentication decision. On the NIST SRE 2001 Dataset, the system provides a 3.88% absolute gain over i-vector when the duration of test segment is 1 second. A real-time demonstration system has been implemented on Microsoft Surface Pro.
description: 39 pages, 4 figures
title: Preparation and analysis of a biodegradeable magnesium alloy
Creators: name: Estermann, Paul
Publisher: name: TU Wien
Year: 2019
Subjects: subject: Biodegradeable
subject: Magnesium
subject: Calcium
subject: Zink
subject: TEM
subject: Age-hardening
subject: Extrusion

description: Magnesium alloys offer many possible improvements compared to titanium when used in implants, including the possibility for controlled degradation inside the body. The Institute of Materials Science and Technology at the Technical University of Vienna owns a patent for the use of the Mg-0.6 Ca-0.6 Zn-alloy in bone screws and there is an ongoing activity for research on this topic. This master-thesis starts with the state-of-the-art relevant for the development of a magnesium-calcium-zinc-based biodegradable alloy. The state-of-the-art is divided into the main categories of age-hardening-behavior, the extrusion, the biocompatibility and cytotoxicity as well as the deformation behavior and the intermetallic phases present in magnesium alloys. To understand the thermal behavior, a simulation is carried out using the thermo-kinetic software MatCalc and the findings are discussed. The experimental part spans from the fabrication of the Mg-0.6 Ca-0.6 Zn alloy over different heat-treatments and the successful extrusion and ends at the tensile testing and microscopic analysis of several samples. The tensile tests show promising results and the optical images and transmission electron images allow a sufficient characterization of the microstructure, which is discussed in detail. Although the first round of experiments was a success, some areas still offer space for improvement and before this alloy is ready for implantation, a lot of tests will need to be performed.
VLTI/PIONIER reveals the close environment of the evolved system HD101584
Creators: name: Kluska, J.
name: Olofsson, H.
name: Van Winckel, H.
name: Khouri, T.
name: Wittkowski, M.
name: de Wit, W. J.
name: Humphreys, E. M. L.
name: Lindqvist, M.
name: Maercker, M.
name: Ramstedt, S.
name: Tafoya, D.
name: Vlemmings, W. H. T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Context: The observed orbital characteristics of post-asymptotic giant branch (post-AGB) and post-red giant branch (post-RGB) binaries are not understood. We suspect that the missing ingredients to explain them probably lie in the continuous interaction of the central binary with its circumstellar environment. Aims: We aim at studying the circumbinary material in these complex systems by investigating the connection between the innermost and large-scale structures. Methods: We perform high-angular resolution observations in the near-infrared continuum of HD101584, which has a complex structure as seen at millimeter wavelengths with a disk-like morphology and a bipolar outflow due to an episode of strong binary interaction. To account for the complexity of the target we first perform an image reconstruction and use this result to fit a geometrical model to extract the morphological and thermal features of the environment. Results: The image reveals an unexpected double-ring structure. We interpret the inner ring to be produced by emission from dust located in the plane of the disk and the outer ring to be produced by emission from dust that is located 1.6[D/1kpc] au above the disk plane. The inner ring diameter (3.94[D/1kpc] au), and temperature (T=1540$\pm$10K) are compatible with the dust sublimation front of the disk. The origin of the out-of-plane ring (with a diameter of 7.39[D/1kpc] au and a temperature of 1014$\pm10$K) could be due to episodic ejection or a dust condensation front in the outflow. Conclusion: The observed outer ring is possibly linked with the blue-shifted side of the large scale outflow seen by ALMA and is tracing its launching location to the central star. Such observations give morphological constraints on the ejection mechanism. Additional observations are needed to constrain the origin of the out-of-plane structure.
description: Accepted to A&A. 14 pages, 13 figures
Diffusive limit of non-Markovian quantum jumps
Creators: name: Luoma, Kimmo
name: Strunz, Walter T.
name: Piilo, Jyrki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We solve two long standing problems for stochastic descriptions of open quantum system dynamics. First, we find the classical stochastic processes corresponding to non-Markovian quantum state diffusion and non-Markovian quantum jumps in projective Hilbert space. Second, we show that the diffusive limit of non-Markovian quantum jumps can be taken on the projective Hilbert space in such a way that it coincides with non-Markovian quantum state diffusion. However, the very same limit taken on the Hilbert space leads to a completely new diffusive unraveling, which we call non-Markovian quantum diffusion. Further, we expand the applicability of non-Markovian quantum jumps and non-Markovian quantum diffusion by using a kernel smoothing technique allowing a significant simplification in their use. Lastly, we demonstrate the applicability of our results by studying a driven dissipative two level atom in a non-Markovian regime using all of the three methods.
description: 6 pages, 2 figures. Comments are welcome!
Scaling and wavelet-based analyses of the long-term heart rate variability of the Eastern Oyster
Creators: name: Ritto, P. A.
name: Contreras, J. G.
name: Alvarado-Gil, J. J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Characterisations of the long-term behaviour of heart rate variability in humans have emerged in the last few years as promising candidates to became clinically significant tools. We present two different statistical analyses of long time recordings of the heart rate variation in the Eastern Oyster. The circulatory system of this marine mollusk has important anatomical and physiological dissimilitudes in comparison to that of humans and it is exposed to dramatically different environmental influences. Our results resemble those previously obtained in humans. This suggests that in spite of the discrepancies, the mechanisms of long--term cardiac control on both systems share a common underlying dynamic.
description: This paper has been withdrawn by the authors. 24 pages, 7 figures; already published in Physica A 349, 291 (2005)
Warum Objektdaten einen Lebensplan brauchen: Die Lehren aus dem LAZARMUS Projekt am Landesmuseum Württemberg
Creators: name: Gnyp, Anna
Publisher: name: Zenodo
Year: 2024
Subjects: Langzeitarchivierung
Forschungsdatenmanagement
Datenmanagementplan
Museum

description: Langzeitarchivierung digitaler Daten bedeutet für Museen eine neue Aufgabe, die auf Grund der heterogenen Sammlungsbestände und der vielfältigen Aktivitäten in den Bereichen Sammeln, Erhalten, Forschen und Vermitteln ein breites Spektrum an Anforderungen an die Institutionen stellt. Als Teil des kulturellen Erbes sind die Museen in der Verantwortung, nicht nur ihre digitalen Sammlungsobjekte bzw. Digitalisate sondern auch ihre Forschungs- und Vermittlungstätigkeiten zu bewahren. Diese sind auch die Ressourcen von morgen, um die Geschichte der Museen zu schreiben.

Die Komplexität der in den Museen anfallenden digitalen Daten erfordert auf die Institutionen zugeschnittene Konzepte zur Langzeitarchivierung. Pilotprojekte wie das Kooperationsprojekt LAZARMUS zwischen dem Landesarchiv Baden-Württemberg und dem Landemuseum Württemberg können dabei helfen, skalierbare Konzepte auf Basis bestehender Standards und Empfehlungen zu erstellen.
Watching for change : examining discourses of gender, race and sexuality through Paul Wong’s activist/artist videos
Creators: name: Young, Sara Kathryn
Publisher: name: University of British Columbia
Year: 2009

description: This research involves a discourse analysis of several alternative video works produced by Paul Wong, an alternative video artist based in Vancouver, BC. Utilizing Judith Butler's "Subjects of sex/gender/desire," (1999) to comment and expand on Michel Foucault's four 'rules' for conducting discourse analysis, as laid out in The history of sexuality volume I: An introduction, Part Four, Chapter 2, "Method," (1978, 1990) I analyse Wong's 60 unit: Bruise (1976), Confused: Sexual views (1984) and So are you (1994). By focusing on discourses addressing the intersections of gender, race and sexuality in Wong's work, this analysis focuses on how alternative video art can be examined as activist work from a sociological perspective. Wong's video works reflect his engagements with intersecting queer and racialised identities and, through discourse analysis, can be shown to reflect, question and challenge mainstream queer and Chinese histories in Canada. Exploring Wong's contribution to discourses on gender, race and sexuality acts to underscore the contributions of alternative media artists to changing understandings of historical relations and to mainstream historical constructions of identity. Postmodern perspectives inform much alternative video practice and have worked to break down the distinctions between disciplines, recognize previously ignored mediums as legitimate and important forms and also to recognize a multiplicity of narratives and engage with marginalized perspectives. Utilizing postmodern perspectives, then, this research challenges notions of historical 'truths,' in mainstream narratives and histories.
Review of Regression Methods in Biostatistics: Linear, Logistic, Survival, and Repeated Measures Models by Vittinghoff, Glidden, Shiboski, and McCulloch
Creators: name: Lemeshow, Stanley
name: Moeschberger, Melvin L.
name: Lemeshow, Stanley
name: Moeschberger, Melvin L.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research Methods/ Statistical Methods
subject: linear regression
subject: logistic regression
subject: survival analysis
subject: repeated measures
subject: generalized linear models
subject: complex surveys

description: This article reviews Regression Methods in Biostatistics: Linear, Logistic, Survival, and Repeated Measures Models by Vittinghoff et al.
Additional file 1 of Structural and functional similarities and differences in nucleolar Pumilio RNA-binding proteins between Arabidopsis and the charophyte Chara corallina
Creators: name: Park, Su Hyun
name: Hyung-Sae Kim
name: Kalita, Prakash Jyoti
name: Choi, Sang-Bong
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 1: Figure S1. Phylogenetic tree of the Pumilio proteins using 25 APUMs from A. thaliana APUMs and 4 ChPUMs from C. corallina. The maximum likelihood tree was generated using the JTT + F + G model with 1000 bootstrapping replicates.
Making regression tables from stored estimates
Creators: name: Jann, Ben
name: Jann, Ben
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research Methods/ Statistical Methods
subject: estout
subject: estoutdef
subject: estadd
subject: estimates
subject: regression table
subject: latex
subject: html

description: Organizing and archiving statistical results and processing a subset of those results for publication are important and often underestimated issues in conducting statistical analyses. Because automation of these tasks is often poor, processing results produced by statistical packages is quite laborious and vulnerable to error. I will therefore present a new package called estout that facilitates and automates some of these tasks. This new command can be used to produce regression tables for use with spreadsheets, LaTeX, HTML, or word processors. For example, the results for multiple models can be organized in spreadsheets and can thus be archived in an orderly manner. Alternatively, the results can be directly saved as a publication-ready table for inclusion in, for example, a LaTeX document. estout is implemented as a wrapper for estimates table but has many additional features, such as support for mfx. However, despite its flexibility, estout is—I believe—still very straightforward and easy to use. Furthermore, estout can be customized via so-called defaults files. A tool to make available supplementary statistics called estadd is also provided.
title: Investigation of the front contact grid on GaAs wafers as a cap of III-V/Si tandem solar cells by low cost processes
Creators: name: Kheirkhah, Saiedeh
Publisher: name: TU Wien
Year: 2019
Subjects: subject: solar cells
subject: semiconductor-metal contacts

description: Many different solar cell technologies have been developed over the last years, all aiming to improve efficiency in energy conversion, while reducing material expense and cost of production, which is difficult task to fulfil. In order to gain this goal, the SiTaSol project explores to increase the efficiency of inexpensive c-Si solar cells up to 30% by integrating III-V semiconductors as top absorbers. The aim of this thesis is to investigate the metallization of front contact solar cells by low cost deposition methods like inkjet and spin-coating. The copper nanoparticles ink was printed on different substrate such as glass, GaAs and Si. Afterwards were examined the sintering of printed copper nanoparticles ink by using a laser as a high speeds sintering technique. The resistivity of sintered structures was measured and plotted to determine the sheet resistance and contact resistance in the GaAs and Si substrate. Therefore, this work presents experimental investigation of the sintering processing window of pico-second pulsed Nd-YAG laser. The dependence of processing window on Cu layer thickness, different substrates and laser exposure duration has also been studied. This study indicated that, the higher thickness of printed copper NPs enabled to obtain the lower contact resistance and the sintering process under higher laser power with higher exposure time (lower scan speed) decreased the resistivity obviously and caused superior outcomes. In addition, the behavior of pure Copper and Silver, which were deposited with electron-beam physical vapor deposition (EBPVD) technique on GaAs was surveyed to demonstrate the possibility of ohmic contact of copper and silver on two types of GaAs substrate. Furthermore, to improve the contact resistance and adhesion of copper some post processing and surface treatment were done. Various measurements were shown, the lowest contact resistance was gained between pure deposited copper and high doped GaAs (Azur) without post annealing. Also it was indicated that, the copper is the better candidate for these types of GaAs wafers to obtain the ohmic contact with the low resistivity.
Estimation of marginal effects using margeff
Creators: name: Bartus, Tamas
name: Bartus, Tamas
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research Methods/ Statistical Methods
subject: margeff
subject: mfx
subject: average marginal effects
subject: marginal effects at the mean
subject: dummy variables
subject: squared variables

description: This article describes the user-written program margeff, which enables the fast estimation of (average) marginal effects. Besides describing the program, this article offers a new discussion of some problems that are related to computation of marginal effects. I will argue that (1) marginal effects computed at means are not good approximations of average marginal effects, computed as means of marginal effects evaluated at each observations, if some of the parameter estimates are large; (2) both average marginal effects and marginal effects computed at means might produce wrong estimates for dummies that are part of a set of indicator variables indicating different categories of a single underlying variable; and (3) the use of marginal effects computed at means is preferred if some of the regressors are mathematical transformations of other regressors.
On the derivative nonlinear Schrödinger equation with weakly dissipative structure
Creators: name: Li, Chunhua
name: Nishii, Yoshinori
name: Sagawa, Yuji
name: Sunagawa, Hideaki
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q55, 35B40

description: We consider the initial value problem for cubic derivative nonlinear Schrödinger equation in one space dimension. Under a suitable weakly dissipative condition on the nonlinearity, we show that the small data solution has a logarithmic time decay in $L^2$.
description: 10 pages
Boson-like quantum dynamics of association in ultracold Fermi gases
Creators: name: Tikhonenkov, I.
name: Vardi, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the collective association dynamics of a cold Fermi gas of $2N$ atoms in $M$ atomic modes into a single molecular bosonic mode. The many-body fermionic problem for $2^M$ amplitudes is effectively reduced to a dynamical system of $\min\{N,M\}+1$ amplitudes, making the solution no more complex than the solution of a two-mode Bose-Einstein condensate and allowing realistic calculations with up to $10^4$ particles. The many-body dynamics is shown to be formally similar to the dynamics of the bosonic system under the mapping of boson particles to fermion holes, producing collective enhancement effects due to many-particle constructive interference. Dissociation rates are shown to enhance as the number of particles whereas association rates are enhanced as the number of holes, leading to boson-like collective behavior.
description: 5 pages, 2 figures, critical typo in Eq. (13) corrected
Additional file 2 of Structural and functional similarities and differences in nucleolar Pumilio RNA-binding proteins between Arabidopsis and the charophyte Chara corallina
Creators: name: Park, Su Hyun
name: Hyung-Sae Kim
name: Kalita, Prakash Jyoti
name: Choi, Sang-Bong
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Evolutionary Biology
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: 60506 Virology

description: Additional file 2: Figure S2. Alignment of five RNA recognition residues in each Pumilio repeat from nucleolar APUMs and ChPUMs. Five residues of each Pumilio repeat in APUM23 and APUM24 known as classically important for RNA recognition are aligned with those of their homologous ChPUMs, namely, ChPUM2 and ChPUM3, respectively.
Influence of matrix structures in spin systems
Creators: name: Lamann, Mats H.
Publisher: name: Universität Osnabrück
Year: 2024
Subjects: subject: Eigenstate Thermalization Hypothesis
subject: Mori Chain
subject: Lanczos Method
subject: 530 - Physik

description: Within this thesis the effect of structures of quantum systems and their impact on the dynamics of these systems are investigated. At first, the focus will be on the properties of elements of specific observables in the energy eigenbasis. In this approach, a framework already exists with the Eigenstate Thermalization Hypothesis (ETH), which makes certain assumptions about those elements. The assumptions were investigated within the work for different spin-$1/2$ models. These results have been published in Ref.\ P1 and contradict assumptions made by ETH in a strict sense. Furthermore, the results from Ref.\ P2 will be presented, which investigates a new type of perturbation theory based on similar assumptions to those of ETH. It is shown that the perturbation theory can yield good results in spite of non-satisfied assumptions, but those cases can either be explained otherwise and/or it is questionable whether these results are transferable to mesoscopic systems. Cases in which all assumptions are strictly fulfilled were not found. In addition, further investigations were carried out based on the fact that autocorrelation functions can be described as 1-dimensional transport dynamics. Thereby possibilities were investigated, which allow a substantial reduction of the complicity of the transport.