cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Deliberating Cost and Impact: Trustworthiness Signals in Punishment and Helping
Creators: name: Engeler, Nicole C.
name: Raihani, Nichola J.
Publisher: name: figshare
Year: 2023
Subjects: Personality, Social and Criminal Psychology
Psychological Methodology, Design and Analysis
Psychology and Cognitive Sciences not elsewhere classified

description: Stage 1 Registered Reporto protocol and Supplementary Information
ALMA 690 GHz observations of IRAS 16293-2422B: Infall in a highly optically-thick disk
Creators: name: Zapata, Luis A.
name: Loinard, Laurent
name: Rodriguez, Luis F.
name: Hernandez-Hernandez, Vicente
name: Takahashi, Satoko
name: Trejo, Alfonso
name: Parise, Berengere
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present sensitive, high angular resolution ($\sim$ 0.2 arcsec) submillimeter continuum and line observations of IRAS 16293-2422B made with the Atacama Large Millimeter/Submillimeter Array (ALMA). The 0.45 mm continuum observations reveal a single and very compact source associated with IRAS 16293-2422B. This submillimeter source has a deconvolved angular size of about 400 {\it milli-arcseconds} (50 AU), and does not show any inner structure inside of this diameter. The H$^{13}$CN, HC$^{15}$N, and CH$_{3}$OH line emission regions are about twice as large as the continuum emission and reveal a pronounced inner depression or "hole" with a size comparable to that estimated for the submillimeter continuum. We suggest that the presence of this inner depression and the fact that we do not see inner structure (or a flat structure) in the continuum is produced by very optically thick dust located in the innermost parts of IRAS 16293-2422B. All three lines also show pronounced inverse P-Cygni profiles with infall and dispersion velocities larger than those recently reported from observations at lower frequencies, suggesting that we are detecting faster, and more turbulent gas located closer to the central object. Finally, we report a small east-west velocity gradient in IRAS 16293-2422B that suggests that its disk plane is likely located very close to the plane of the sky.
description: Accepted to ApJL
Finite elements and boundary elements - coupling in time domain
Creators: name: Özdemir, Ceyhun
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2019
Subjects: subject: FEM-BEM coupling
subject: wave equation
subject: finite elements
subject: boundary elements
subject: a posteriori error estimates
subject: graded meshes
subject: hp method
subject: dynamic contact
subject: sound emission
subject: FEM-BEM Kopplung
subject: Wellengleichung
subject: Finite Elemente
subject: Randelemente
subject: A posteriori Fehlerschätzer
subject: Graduierte Gitter
subject: hp-Methoden
subject: dynamischer Kontakt
subject: Schallabstrahlung
subject: Dewey Decimal Classification::500 | Naturwissenschaften::510 | Mathematik

description: This thesis considers the treatment of the wave equation given outside of a bounded, orientable Lipschitz domain with the boundary element method (BEM). Beginning with a scattering problem the retarded (potential) boundary integral operators are defined. These operators are discretized with a tensor product ansatz. For the retarded Poincar\'{e}-Steklov operator and the inverse counterpart, numerical experiments are presented using the marching-on-in time (MOT) scheme. The coupling of the finite element method (FEM) and the boundary element method (BEM) provide an analysis of a fluid-structure interaction (FSI) problem with given transmission conditions and the wave propagation interface problem with corresponding transmission conditions. For the FSI problem two approaches are addressed. The symmetric FEM-BEM coupling are discretized such that the MOT-scheme is applicable. Numerical experiments demonstrate the reliability of the implementation. The other approach uses a retarded boundary integral operator as a test function, which leads to major challenges in the discretization and the performing of numerical experiments. The wave propagation interface problem is adressed with a symmetric coupling. Here the discretization is chosen such that a MOT-scheme may applied. Numerical results are demonstrated as well. A prori and a posteriori error estimates for conforming Galerkin approximation are derived in all these cases, motivating adaptive mesh refinement procedures. The remaining chapters consider the results of time domain boundary element discretizations for screen problems, unilateral contact and a real-world application on tyres. Numerical experiments achieve optimal approximation rates on graded meshes for screen problems, resolving the edge and corner singularities. As a first step towards high-order methods $p$ and $hp-$versions of time domain boundary element method are presented for quasi-uniform meshes. Further crack and punch problems, as two examples of dynamic contact problems in time domain, are analyzed. While an error analysis is done for flat contact areas, numerical experiments show convergence even for non-flat contact areas. The sound emission of tyres, where noise emitting from the contact of the tyre with the pavement, are discussed. Numerical experiments illustrate the applicability of the boundary element method to real-world problems.
Anomalous decay of quantum correlations of quantum dot qubits
Creators: name: Roszak, Katarzyna
name: Mazurek, Paweł
name: Horodecki, Paweł
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the evolution of quantum correlations, quantified by the geometric discord, of two excitonic quantum dot qubits under the influence of the phonon environment. We show that the decay of these correlations differs substantially form the decay of entanglement. Instead of displaying sudden death type behavior, the geometric discord shows a tendency to undergo transitions between different types of decay, is sensitive to non-local phase factors, and may already be enhanced by weak environment-mediated interactions. Hence, two-qubit quantum correlations are more robust under decoherence processes, while showing a richer and more complex spectrum of behavior under unitary and non-unitary evolution.
description: 5 pages, 2 figures
Artivist reception on Twitter: art, politics and social media
Creators: name: Weij, Frank
name: Berkers, Pauwke
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: There is a growing body of literature around the concept of artivism, which refers to artists who use social engagement and activism in their artistic practices. Artists, however, are not necessarily perceived as political actors and are heard for their political activism only through a legitimacy cross-over from artistic field to political field. In this paper, therefore, we theorize that audience attention has become an important resource for political legitimacy and study how a set of artivists are received on social media. To this end we have analyzed over two million tweets and argue that content on social media platforms such as Twitter provides insight into how people talk about social issues, such as politics and activism. We employ the methods of topic modeling and semantic network analysis to study how Twitter users engage with artivists and find that very few Twitter users are interested in the societal issues that artivists raise. Instead, the majority of tweets in our data involves attention to state prosecution, media-centric artistic recognition and consumerism. These findings indicate that even though some artivists succeed in bringing their activist art to Twitter audiences, political activism that originates from artists is rarely a topic of discussion among Twitter users in terms of its activist content.
Simulationsbasierte Analyse der Störfestigkeit von ausgedehnten CAN FD-Netzwerken gegen elektromagnetische Felder
Creators: name: Austermann, Carina
name: Frei, Stephan
Publisher: name: Aachen : Apprimus
Year: 2022
Subjects: subject: EMV
subject: Verträglichkeit
subject: Elektromagnetik
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: Die große Anzahl von elektrischen Komponenten und Steuergeräten im Fahrzeug erfordert Kommunikationssysteme mit vielen Teilnehmern und hohen Datenraten. CAN FD [1,2] ermöglicht Übertragungsraten bis 8 MBit/s über ein ungeschirmtes verdrilltes Leitungspaar. Die räumliche Ausdehnung der Kommunikationsnetzwerke und die Zunahme leistungselektronischer Systeme im Fahrzeug bilden eine herausfordernde elektromagnetische Umgebung. Teile des Kommunikationsnetzes können sich nah an Störquellen befinden, was eine Einkopplung von Störgrößen ermöglicht. Für die Realisierung von neuen Fahrzeugfunktionen bis hin zu automatisiertem Fahren ist eine schnelle und zuverlässige Datenübertragung unerlässlich und damit auch die genaue Kenntnis über die Störfestigkeit der Kommunikationssysteme. In diesem Beitrag wird eine simulationsbasierte Analysemethode von ausgedehnten CAN FD-Netzwerken mit mehr als 3 Teilnehmern vorgestellt, die eine quantitative Bewertung der Störfestigkeit verschiedener Netzwerktopologien ermöglicht. Es wird ein modular aufgebautes Simulationssetup präsentiert, das für eine systematische Analyse von Parametern der Netzwerktopologie und der Störeinkopplung verwendet wird. Als Störquelle wird eine ebene Welle betrachtet, sodass die Analyse verschiedener Frequenzen der eingekoppelten Felder möglich ist. Die Verwendung von ungeschirmten verdrillten Leitungen führt vor allem zur Einkopplung von Common-Mode-Störungen (CM). Da in einem differentiell übertragenden Kommunikationssystem Differential-Mode-Störungen (DM) besonders kritisch sind, wird ebenfalls die durch Asymmetrien im Netzwerk hervorgerufene Modenkonversion und die damit entstehenden DM-Störungen untersucht. Das Paper ist wie folgt strukturiert: In Kapitel 2 werden die Simulationsmodelle für Kommunikationstransceiver, Leitungen und Störeinkopplung einer ebenen Welle vorgestellt. In Kapitel 3 werden auf Basis der Modelle verschiedene Netzwerktopologien aufgebaut und mit Frequenz- und Zeitbereichssimulationen untersucht. Der Fokus liegt dabei auf der Methodik der simulationsbasierten Analyse der Netzwerktopologien. Die CM- und DM-Spannungen an den verschiedenen Transceivern im Netzwerk können für die Bewertung der Störfestigkeit verwendet werden, sodass kritische Parameter der untersuchten Sterntopologien identifiziert werden können. Die Ergebnisse werden in Kapitel 4 zusammengefasst.
Finite temperature dynamics of one-dimensional quantum magnets
Creators: name: Luckmann, Carsten
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2008
Subjects: subject: Dynamic structure factor
subject: Heisenberg model
subject: quantum spin systems
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Field induced phase transitions and phase diagrams in BiFeO_3-like multiferroics
Creators: name: Gareeva, Z. V.
name: Popkov, A. F.
name: Soloviov, S. V.
name: Zvezdin, A. K.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The incommensurate magnetic structures and phase diagrams of multiferroics has been explored on the basis of accurate micromagnetic analysis taking into account the spin flexoelecric interaction (Lifshitz invariant). The objects of the study are BiFeO_3-like single crystals and epitaxial films grown on the <111> substrates. The main control parameters are the magnetic field, the magnetic anisotropy, and the epitaxial strain in the case of films. We predict novel quasi-cycloidal structures induced by external magnetic field or by epitaxial strain in the BiFeO_3-films. Phase diagrams representing the regions of homogeneous magnetic states and incommensurate structures stability are constructed for the two essential geometries of magnetic field (magnetic field oriented parallel to the principal crystal axis C_3 and perpendicular to this direction C_3). It is shown that the direction of applied magnetic field substantially affects a set of magnetic phases, properties of incommensurate structures, character of phase transitions. Novel conical type of cycloidal ordering is revealed during the transition from incommensurate cycloidal structure into homogeneous magnetic state. Elaborated phase diagrams allow estimate appropriate combination of control parameters (magnetic field, magnetic anisotropy, exchange stiffness) required to the destruction of cycloidal ordering corresponding to the transition into homogeneous structure. The results show that the magnitude of critical magnetic field suppressing cycloid is lowered in multiferroics films comparing to single crystals, it can be also lowered by the selection of orientation of magnetic field. Our results can be useful for strain engineering of new multiferroic functional materials on demand.
description: 14 pages, 10 figures
Online political participation: the evolution of a concept
Creators: name: Ruess, Christina
name: Hoffmann, Christian Pieter
name: Boulianne, Shelley
name: Heger, Katharina
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Neuroscience
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: The advent of online technologies has been triggering a wave of empirical examinations of online political participation (OPP) over the past twenty years. It also stimulated scholarly debate on how to conceptualize political participation in a digital age. Scholars differ on whether to consider passive and expressive online behaviors part of or a mere precursor to political participation. This study argues that due to its rapid evolution as well as its dependence on platform affordances, quantitative empirical studies on OPP may be prone to deviations between established, much-cited definitions and measurements applied in the field. Based on a systematic literature review of 289 international peer-reviewed survey-based and experimental studies, we analyze both definitions and measurements of OPP. We find a series of disconnections: Measures preponderantly address online activities, yet merely a small share of definitions focuses on the online sphere. While only few definitions account for passive activities (e.g., reading news about politics), many operationalizations include measures capturing such passive behaviors. Expressive activities are most popular in measures of OPP, but definitions rarely reflect this focus. Finally, while measures of OPP are prone to be platform-specific, definitions tend to neglect this characteristic. We conclude by reflecting the conceptual implications of common measurement practices for the study of OPP.
Über das Phasendiagramm verallgemeinerter Spinleitern
Creators: name: Nedelcu, Claudiu-Mircea
Publisher: name: Hannover : Universität Hannover
Year: 2000
Subjects: subject: Spin ladders
subject: matrix product ground states
subject: nonlinear sigma model
subject: Phasendiagramm
subject: Spinkette
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Hypoxia Onset in Mesenchymal Stem Cell Spheroids: Monitoring With Hypoxia Reporter Cells
Creators: name: Schmitz, Carola
name: Potekhina, Ekaterina
name: Belousov, Vsevolod V.
name: Lavrentieva, Antonina
Publisher: name: Lausanne : Frontiers Media
Year: 2021
Subjects: subject: hypoxia sensor
subject: cell spheroids
subject: adipose tissue-derived mesenchymal stem cells
subject: hypoxia reporter cells
subject: oxygen concentration measurements
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: The therapeutic and differentiation potential of human mesenchymal stems cells (hMSCs) makes these cells a promising candidate for cellular therapies and tissue engineering. On the path of a successful medical application of hMSC, the cultivation of cells in a three-dimensional (3D) environment was a landmark for the transition from simple two-dimensional (2D) testing platforms to complex systems that mimic physiological in vivo conditions and can improve hMSC curative potential as well as survival after implantation. A 3D arrangement of cells can be mediated by scaffold materials where cells get entrapped in pores, or by the fabrication of spheroids, scaffold-free self-organized cell aggregates that express their own extracellular matrix. Independently from the cultivation method, cells expanded in 3D experience an inhomogeneous microenvironment. Many gradients in nutrient supply, oxygen supply, and waste disposal from one hand mimic in vivo microenvironment, but also put every cell in the 3D construct in a different context. Since oxygen concentration in spheroids is compromised in a size-dependent manner, it is crucial to have a closer insight on the thresholds of hypoxic response in such systems. In this work, we want to improve our understanding of oxygen availability and consequensing hypoxia onset in hMSC spheroids. Therefore, we utilized human adipose tissue-derived MSCs (hAD-MSCs) modified with a genetical sensor construct to reveal (I) the influence of spheroid production methods and (II) hMSCs cell number per spheroid to detect the onset of hypoxia in aggregates. We could demonstrate that not only higher cell numbers of MSCs, but also spheroid formation method plays a critical role in onset of hypoxia.
Untersuchungen zur Infektiosität von porcinen endogenen Retroviren (PERV)
Creators: name: Winkler, Monica
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Xenotransplantation
subject: retrovirus
subject: PERV
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
On integrability of massless AdS_4 x CP^3 superparticle equations
Creators: name: Uvarov, D. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Lax representation is elaborated for the equations of motion of massless superparticle on the AdS_4 x CP^3 superbackground that proves their classical integrability.
description: 11 pages
Injektionsgekoppelte diodengepumpte Nd:YAG- und Nd:YVO4-Laser für terrestrische interferometrische Gravitationswellendetektoren
Creators: name: Zawischa, Ivo
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Lasers - neodymium
subject: lasers - thermal lens
subject: laser resonators
subject: lasers - single-mode
subject: lasers - degenerate modes
subject: lasers - injection-locked
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Trump and circumstance: introducing the post-truth claim as an instrument for investigating truth contestation in public discourse
Creators: name: Kluknavská, Alena
name: Eisele, Olga
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: The idea of post-factual politics has become increasingly relevant for describing current political and societal developments. Though research on the topic has been blooming, we lack a common framework and systematic tool to map and analyze post-truth communication. Therefore, our paper advances the adaptation of claims-making for the analysis of how actors relativize the truth and use discourses of untruthfulness to attack their opponents, constructing their own versions of reality. We extend the affinity between populism and post-truth to conceptualize truth contestation in two aspects: (1) the antagonistic anti-elite constructions of accusations of creating and spreading false information and lies, (2) the emphasis on emotionality and negativity over facts and expertise. Building on a communication-centered approach to populism, we define key content and stylistic characteristics of post-truth claims to study the contestation of truth in political communication in a systematic way. Taking the Twitter communication of Donald Trump as a prime example, we illustrate the employability of our approach via a pilot study on the longest period of shutdown in US history (22 December 2018–25 January 2019). As a result, we introduce claims analysis as an approach that can be usefully adapted to study post-truth discourses.
Der Einfluss von Alkalimetallen auf musterbildende Reaktionen auf einer Rh(110) Oberfläche
Creators: name: Marbach, Hubertus
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Pattern formation
subject: heterogous catalysis
subject: Pt
subject: Rh
subject: chemical waves
subject: surface diffusion
subject: XPS
subject: PEEM
subject: SPEM
subject: LEEM
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Technologiekonzepte für sub-100 nm SiGe-Hetero-Feldeffekttransistoren zur Anwendung im Hochfrequenzbereich
Creators: name: Zeuner, Marco
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: SiGe-HFET
subject: replacement-gate
subject: RF-transistor
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: [no abstract]
Scalable Successive-Cancellation Hardware Decoder for Polar Codes
Creators: name: Raymond, Alexandre J.
name: Gross, Warren J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Polar codes, discovered by Arıkan, are the first error-correcting codes with an explicit construction to provably achieve channel capacity, asymptotically. However, their error-correction performance at finite lengths tends to be lower than existing capacity-approaching schemes. Using the successive-cancellation algorithm, polar decoders can be designed for very long codes, with low hardware complexity, leveraging the regular structure of such codes. We present an architecture and an implementation of a scalable hardware decoder based on this algorithm. This design is shown to scale to code lengths of up to N = 2^20 on an Altera Stratix IV FPGA, limited almost exclusively by the amount of available SRAM.
Immunomodulating Effect of the Consumption of Watercress (Nasturtium officinale) on Exercise-Induced Inflammation in Humans
Creators: name: Schulze, Hendrik
name: Hornbacher, Johann
name: Wasserfurth, Paulina
name: Reichel, Thomas
name: Günther, Thorben
name: Krings, Ulrich
name: Krüger, Karsten
name: Hahn, Andreas
name: Papenbrock, Jutta
name: Schuchardt, Jan P.
Publisher: name: Basel : MDPI AG
Year: 2021
Subjects: subject: watercress
subject: cruciferous vegetables
subject: glucosinolates
subject: gluconasturtiin
subject: anti-inflammatory
subject: pro-inflammatory
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin
subject: Dewey Decimal Classification::600 | Technik::640 | Hauswirtschaft und Familienleben

description: The vegetable watercress (Nasturtium officinale R.Br.) is, besides being a generally nutritious food, a rich source of glucosinolates. Gluconasturtiin, the predominant glucosinolate in watercress, has been shown to have several health beneficial properties through its bioactive breakdown product phenethyl isothiocyanate. Little is known about the immunoregulatory effects of watercress. Moreover, anti-inflammatory effects have mostly been shown in in vitro or in animal models. Hence, we conducted a proof-of-concept study to investigate the effects of watercress on the human immune system. In a cross-over intervention study, 19 healthy subjects (26.5 ± 4.3 years; 14 males, 5 females) were given a single dose (85 g) of fresh self-grown watercress or a control meal. Two hours later, a 30 min high-intensity workout was conducted to promote exercise-induced inflammation. Blood samples were drawn before, 5 min after, and 3 h after the exercise unit. Inflammatory blood markers (IL-1β, IL-6, IL-10, TNF-α, MCP-1, MMP-9) were analyzed in whole blood cultures after ex vivo immune cell stimulation via lipopolysaccharides. A mild pro-inflammatory reaction was observed after watercress consumption indicated by an increase in IL-1β, IL-6, and TNF-α, whereas the immune response was more pronounced for both pro-inflammatory and anti-inflammatory markers (IL-1β, IL-6, IL-10, TNF-α) after the exercise unit compared to the control meal. During the recovery phase, watercress consumption led to a stronger anti-inflammatory downregulation of the pro-inflammatory cytokines IL-6 and TNF-α. In conclusion, we propose that watercress causes a stronger pro-inflammatory response and anti-inflammatory counter-regulation during and after exercise. The clinical relevance of these changes should be verified in future studies.
Online Regret Bounds for Undiscounted Continuous Reinforcement Learning
Creators: name: Ortner, Ronald
name: Ryabko, Daniil
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We derive sublinear regret bounds for undiscounted reinforcement learning in continuous state space. The proposed algorithm combines state aggregation with the use of upper confidence bounds for implementing optimism in the face of uncertainty. Beside the existence of an optimal policy which satisfies the Poisson equation, the only assumptions made are Holder continuity of rewards and transition probabilities.
title: Des Mosellandes Geschichten, Sagen und Legenden, aus dem Munde deutscher Dichter. Von N. Hocker
Creators: name: Simrock, Karl
Publisher: name: University Library Heidelberg
Year: 2016

description: Rezension zu: Des Mosellandes Geschichten, Sagen und legenden, aus dem Munde deutscher Dichter. Von N. Hocker. Als Anhang: Hagen von Throneck und die Nibelungen von N. H., ferner: der Sturz des Donnergottes bei Trier und: Der römische Richtberg und der fränkische Malberg bei Trier.
Darstellung enantiomerenreiner fluorhaltiger Synthesebausteine durch selektive Hochdruckcycloaddition
Creators: name: Meibom, Daniel
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: Diels-Alder-reactions
subject: fluorinated building blocks
subject: retro-Diels-Alder-reactions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
title: Подвижные игры с методикой преподавания. Ч. 1. Организация и проведение подвижных игр для школьников
Creators: name: ELS IPR BOOKS
Publisher: name: Книта
Year: 2021

description: В части 1 данного учебного пособия представлены разработки подвижных игр, каждая из которых имеет свою педагогическую направленность. При описании игры указаны место, необходимый инвентарь, правила проведения, характер физических качеств, которые воспитываются, в соответствии с методикой проведения подобных игр. Предназначено для студентов очной и заочной форм обучения по направлению подготовки 49.03.01 «Физическая культура», а также учителей физической культуры, тренеров детско-юношеских спортивных школ.
Expressionsanalyse zum Nachweis disseminierter Tumorzellen im Blut von Brustkrebspatientinnen
Creators: name: Zieglschmid, Veit
Publisher: name: Hannover : Universität
Year: 2003
Subjects: subject: Disseminated tumor cells
subject: multiplex RT-PCR
subject: expression profile
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit

description: [no abstract]
Tunable Graphene Reflective Cells for THz Reflectarrays and Generalized Law of Reflection
Creators: name: Carrasco, Eduardo
name: Tamagnone, Michele
name: Perruisseau-Carrier, Julien
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A tunable graphene-based reflective cell operating at THz is proposed for use in reconfigurable-beam reflectarrays, or similarly to implement the so-called generalized law of reflection. The change in the complex conductivity of graphene when biased by an electric field allows controlling the phase of the reflected field at each element of the array. Additionally, the slow wave propagation supported by graphene drastically reduces the dimensions of the cell, which allows smaller inter-element spacing hence better array performance. An elementary cell is optimized and its scattering parameters computed, demonstrating a dynamic phase range of 300 degrees and good loss figure for realistic chemical potential variations. Finally, a circuit model is proposed and shown to very accurately predict the element response.
description: 8 pages, 6 figures
Acoustic Feedback in Gait Rehabilitation—Pre-Post Effects in Patients With Unilateral Hip Arthroplasty
Creators: name: Reh, Julia
name: Schmitz, Gerd
name: Hwang, Tong-Hun
name: Effenberg, Alfred O.
Publisher: name: Lausanne : Frontiers Media
Year: 2021
Subjects: subject: gait sonification
subject: hip arthroplasty
subject: acoustic feedback
subject: gait rehabilitation
subject: range of motion
subject: training intervention
subject: Dewey Decimal Classification::700 | Künste, Bildende Kunst allgemein::790 | Freizeitgestaltung, Darstellende Kunst::796 | Sport

description: It is known that patients after unilateral hip arthroplasty still suffer from a deficient gait pattern compared to healthy individuals one year after surgery. Through the method of gait sonification, it may be possible to achieve a more efficient training and a more physiological gait pattern. Increased loads on the musculoskeletal system could thus be reduced and rehabilitation times shortened. In a previous investigation with this patient group, we found immediate gait pattern changes during training with dual mode acoustic feedback [real-time feedback (RTF) and instructive model sequences (IMS)]. To determine whether an effect persists without the immediate use of acoustic feedback, we analyze data from four times of testing. Following unilateral hip arthroplasty 22 patients participated in an intervention of ten gait training sessions of 20 min each. During gait training the sonification group (SG) (n = 11) received an acoustic feedback consisting of RTF and IMS compared to a control group (CG) (n = 11). Pre-test, intermediate test, post-test, and re-test were conducted using an inertial sensor-based motion analysis system. We found significant effects (α = 0.05) regarding step length and range of motion (RoM) of the hip joint. Step length of the affected leg increased in the SG from intermediate test to post-test but decreased in the CG [intermediate test: (SG) 0.63 m ± 0.12 m, (CG) 0.63 m ± 0.09 m; post-test: (SG) 0.66 m ± 0.11 m, (CG) 0.60 m ± 0.09 m]. However, from the post-test to the re-test a reverse development was observed [re-test: (SG) 0.63 m ± 0.10 m, (CG) 0.65 m ± 0.09 m]. Also, from post-test to re-test a decrease in the RoM of the unaffected hip for the SG but an increase for the CG could be observed [post-test: (SG) 44.10° ± 7.86°, (CG) 37.05° ± 7.21°; re-test: (SG) 41.73° ± 7.38°, (CG) 40.85° ± 9.28°]. Regarding further parameters, significant interactions in step duration as well as increases in stride length, gait speed, cadence, and a decrease in ground contact time from pre-test to re-test were observed for both groups.
Iranian Democracy: A Theatrical Escapade
Creators: name: Drazin, Nolan
Publisher: name: figshare
Year: 2023
Subjects: International relations
Public policy
Political theory and political philosophy
Social and political philosophy
Political economy and social change

description: Theatrical productions are often thought to result in works of cinema, plays and concerts. They are and historically have been, the epitome of culture and sophistication. These works have influenced global society in ways unattainable in the real world. Their use of imagination, creativity and subtlety shape a narrative. The ability to circumvent the conscious mind and present a world of fabrication and symbolism manufactures a storyline. These gifts work to elevate mankind from the likes of animals. However, these gifts are also abused. The Islamic Republic of Iran is often misunderstood. The nation is littered with inconsistencies, contrasts and elements of hypocrisy. Its governing institutions can be described in the same manner. In analysing Iran, the question of what constitutes democracy, or further democratisation, comes to mind. Yet, one thing is clear-the Iranian regime conducts a theatrical masterclass that rivals the likes of Hollywood and the Royal National Theatre. Iran maintains strict and open elections. Iran has three branches of government. Iran has a system of checks and balances. Yet, Iran is a production. Put simply, Iran is a tyrannical dictatorship masquerading as a democracy.
title: Images as sites of subversion: the Passion of Christ in the orthodox ecclesiastical art of Transylvania (eighteenth-nineteenth centuries)
Creators: name: Andrei, Andreea
Publisher: name: IMT Alti Studi Lucca
Year: 2019

description: The thesis captures the intricacies of the interplay of religion,
 ethnicity, politics, and social class in the scriptural imagery depicted on
 the walls of Transylvanian wooden churches in the eighteenth and
 nineteenth centuries. It places emphasis on the episodes of the Passion,
 in which Ottoman Turks and Hungarians stand in for Christ’s
 persecutors. It engages with alterity as constructed by ideology and
 social power relations. If dominant groups enjoyed superior access to
 power, Orthodox Romanians (who differed in ethnicity, class, language,
 and religion) had to face political exclusion and economic exploitation.
 Alterity is primarily understood as the perceived otherness of the
 Romanian rural society against foreign menace and politically dominant
 groups.
 We examine the Passion scenes as sites of subversion, where
 Orthodox Romanians, which constituted the ‘marginal majority’, could
 allude to social iniquities, challenge the social, political, and religious
 might of dominant powers, as well as kindle hostility against them. In
 order to illustrate the way in which these renditions are related to
 structures of power and subversion, we investigate the connection
 between changes in iconography that contributed to their permeation of
 the religious realm and the process of identity formation of the
 Romanian nation in Transylvania. We argue that the painters framed
 the message conveyed by the paintings in such a way that it would
 resonate with and reinforce a mindset that the receivers, the Romanian
 peasantry, already possessed.
 The executioners’ allegorical representations are not the product
 of a mere correlation between Turks and Hungarians and ‘enemies of
 the faith’ or heretics, but an extension of the mentalities of the
 Transylvanian Orthodox communities of that time. The sharpening of
 ethnic and religious distinctions was intentional in shaping identity. It
 entailed a hierarchical ordering that privileged the marginal and
 discredited the influential.
Secure Wireless Communications via Cooperative Transmitting
Creators: name: Stojanovski, Toni Draganov
name: Marina, Ninoslav
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Information theoretic secrecy is combined with cryptographic secrecy to create a secret-key exchange protocol for wireless networks. A network of transmitters, which already have cryptographically secured channels between them, cooperate to exchange a secret key with a new receiver at a random location, in the presence of passive eavesdroppers at unknown locations. Two spatial point processes: homogeneous Poisson process and independent uniformly distributed points are used for the spatial distributions of transmitters and eavesdroppers. We analyse the impact of the number of cooperating transmitters and the number of eavesdroppers on the area fraction where secure communication is possible. Upper bounds on the probability of existence of positive secrecy between the cooperating transmitters and the receiver are derived. The closeness of the upper bounds to the real value is then estimated by means of numerical simulations. Simulations also indicate that a deterministic spatial distribution for the transmitters e.g. hexagonal and square lattices, increases the probability of existence of positive secrecy capacity compared to the random spatial distributions. For the same number of friendly nodes, cooperative transmitting provides a dramatically larger secrecy region than cooperative jamming and cooperative relaying.
description: Submitted for presentation at the 2013 IEEE International Symposium on Information Theory, Istanbul, Turkey, July 2013
Analyse der proteolytischen Prozessierung und der Bindungscharakteristika von Bindeprotein-2 und -4 der Insulin-ähnlichen Wachstumsfaktoren aus humanem Hämofiltrat
Creators: name: Mark, Silke
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: IGFBP-2 and -4
subject: proteolysis
subject: binding analysis
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
A Gauss-Bonnet Type Formula on Riemann-Finsler surfaces with non-constant indicatrix volume
Creators: name: Itoh, J.
name: Sabau, S. V.
name: Shimada, H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We prove a Gauss-Bonnet type formula for Riemann-Finsler surfaces of non-constant indicatrix volume and with regular piecewise smooth boundary. We give a Hadamard type theorem for N-parallels of a Landsberg surface.
title: Analysis of Push-Up and Pull-Up Variants to Develop an Upper Extremity Model
Creators: name: Wimsett, Ashley
Publisher: name: University of Kentucky Libraries
Year: 2019

description: Musculoskeletal Injuries are the most common cause of severe long-term pain and physical disability. Push-Ups and Pull-Ups are effective dynamic exercises that mimic high level function activities, such as those used in the military. The model developed allows for researchers to analyze the forces and moments associated with the shoulder, elbow and wrist, to further assess function in military personnel, athletes and the active population. The model also follows the guidelines set forth by the International Society of Biomechanics (ISB).
description: Copyright © Ashley Carlene Wimsett 2019
Diachronic Variation in Grammatical Relations
Creators: name: Gerow, Aaron
name: Ahmad, Khurshid
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We present a method of finding and analyzing shifts in grammatical relations found in diachronic corpora. Inspired by the econometric technique of measuring return and volatility instead of relative frequencies, we propose them as a way to better characterize changes in grammatical patterns like nominalization, modification and comparison. To exemplify the use of these techniques, we examine a corpus of NIPS papers and report trends which manifest at the token, part-of-speech and grammatical levels. Building up from frequency observations to a second-order analysis, we show that shifts in frequencies overlook deeper trends in language, even when part-of-speech information is included. Examining token, POS and grammatical levels of variation enables a summary view of diachronic text as a whole. We conclude with a discussion about how these methods can inform intuitions about specialist domains as well as changes in language use as a whole.
Selecting the State-Representation in Reinforcement Learning
Creators: name: Maillard, Odalric-Ambrym
name: Munos, Rémi
name: Ryabko, Daniil
Publisher: name: arXiv
Year: 2013
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The problem of selecting the right state-representation in a reinforcement learning problem is considered. Several models (functions mapping past observations to a finite set) of the observations are given, and it is known that for at least one of these models the resulting state dynamics are indeed Markovian. Without knowing neither which of the models is the correct one, nor what are the probabilistic characteristics of the resulting MDP, it is required to obtain as much reward as the optimal policy for the correct model (or for the best of the correct models, if there are several). We propose an algorithm that achieves that, with a regret of order T^{2/3} where T is the horizon time.
Palynological diversity of some species of Coussareeae (Rubiaceae) from the Atlantic Forest, Brazil
Creators: name: Gonçalves-Esteves, Vania
name: Vieira, Gabrielle Reboredo Menezes
name: Cartaxo-Pinto, Simone
name: Mendonça, Claudia Barbieri Ferreira
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Coussareeae is a neotropical tribe with a complex taxonomic history. Several authors considered it very close to the tribe Psychotrieae owing to similarities in their morphological characteristics, such as solitary ovules. The tribe Coussareeae constitutes the largest basal clade of the subfamily Rubioideae, and most of its genera are well represented in Brazil. The tribe is resolved into three suprageneric clades, including the Coccocypselum and Coussarea-Faramea clades, whose representatives are found in Brazil. This study aimed to ascertain whether pollen attributes corroborate the currently proposed phylogeny and systematics of the tribe. For this, pollen grains of 33 species belonging to the Coccocypselum and Coussarea-Faramea clades were analyzed. Specimens were obtained from herbaria, treated by the acetolysis method, measured, photographed, and described using light and scanning electron microscopy. Morphological analysis showed that pollen grains were medium (25–50 µm) or large (50–100 µm) in size; isopolar or apolar; 2-porate, 3-porate, or 3-colporate; and oblate spheroidal, suboblate, prolate spheroidal, or subprolate. Ornamentation varied among clade representatives. Multivariate analysis of quantitative data revealed that pollen diameter, apocolpium side, pore diameter, colpus length, and endoaperture width were the most significant characters. It can be seen from the results that the studied clades are formed by palynologically distinct genera in terms of polarity, aperture type, and ornamentation. Palynology confirms the proposed taxonomic classification.
Spurenbestimmung metallischer Verunreinigungen in [gamma]TiAl und den hochreinen Ausgangsmaterialien Al und Ti mittels ICP-Massenspektrometrie
Creators: name: Majewski, Tom
Publisher: name: Hannover : Universität
Year: 2002
Subjects: subject: ICP-MS
subject: gamma-TiAl
subject: gamma titanium aluminides
subject: aluminium
subject: titanium
subject: ultra trace analysis
subject: trace matrix separation technique
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Continuous-wave coherent imaging with terahertz quantum cascade lasers using electro-optic harmonic sampling
Creators: name: Ravaro, Marco
name: Jagtap, Vishal
name: Santarelli, Giorgio
name: Sirtori, Carlo
name: Li, Lianhe
name: Khanna, S. P.
name: Linfield, Edmund H.
name: Barbieri, Stefano
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a coherent imaging system based on a terahertz (THz) frequency quantum cascade laser (QCL) phase-locked to a near-infrared fs-laser comb. The phase locking enables coherent electro-optic sampling of the continuous-wave radiation emitted by the QCL through the generation of a heterodyne beat-note signal. We use this beat-note signal to demonstrate raster scan coherent imaging using a QCL emitting at 2.5 THz. At this frequency the detection noise floor of our system is of 3 pW/Hz and the long-term phase stability is <3 degrees/h, limited by the mechanical stability of the apparatus.
Ice Lines in Circumbinary Protoplanetary Disks
Creators: name: Clanton, Christian
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: I examine the position of the ice line in circumbinary disks heated by steady mass accretion and stellar irradiation and compare with the critical semi-major axis, interior to which planetary orbits are unstable. There is a critical binary separation, dependent on the binary parameters and disk properties, for which the ice line lies within the critical semi-major axis for a given binary system. For an equal mass binary comprised of 1 M$_{\odot}$ components, this critical separation is $\approx 1.04 $AU, and scales weakly with mass accretion rate and Rosseland mean opacity ($\propto [\dot{M}κ_R]^{2/9}$). Assuming a steady mass accretion rate of $\dot{M} \sim 10^{-8} {\rm M_{\odot} yr^{-1}}$ and a Rosseland mean opacity of $κ_R\sim 1 {\rm cm^2 g^{-1}}$, I show that $\gtrsim 80%$ of all binary systems with total masses $M_{\rm tot} \lesssim 4.0 M_{\odot}$ have ice lines that lie interior to the critical semi-major axis. This suggests that rocky planets should not form in these systems, a prediction which can be tested by looking for planets around binaries with separations larger than the critical separation with \emph{Kepler} (difficult) and with microlensing.
description: 5 pages, 3 figures. Submitted to ApJL
The palynology of the Middle–Upper Devonian (Givetian–Frasnian) in the Łysogóry-Radom and Lublin basins, south-central Poland
Creators: name: Kondas, Marcelina
name: Filipiak, Paweł
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology

description: The Middle and Upper Devonian (Givetian and Frasnian) deposits of the Łysogóry-Radom and Lublin basins (south-central Poland) presented a diversified palynomorph assemblage. Numerous miospore taxa were documented and also contained well-preserved and varied plant remains, scolecodonts, acritarchs, chitinozoans, organic tentaculitoids, and bioclasts of uncertain biological affinity. Aneurospora extensa, Geminospora aurita, Samarisporites triangulatus and other documented taxa allowed us to establish two local miospore zones: the Givetian ‘Geminospora’ extensa zone and the Givetian–Frasnian Geminospora aurita zone. The time interval of these two zones shows the impoverishment in taxonomic diversity of microflora related to the rapid climate changes that are associated with the global Taghanic Event. The palynofacies analysis indicated a shallow-shelf environment with significant terrestrial input that was controlled by transgressive-regressive cycles, which confirmed the dynamic palaeoenvironmental changes. The new miospore taxon Retusotriletes radomskii is described.