cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Reactors: A Case for Predictable, Virtualized Actor Database Systems
Creators: name: Shah, Vivek
name: Salles, Marcos Antonio Vaz
Publisher: name: arXiv
Year: 2017
Subjects: subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: The requirements for OLTP database systems are becoming ever more demanding. Domains such as finance and computer games increasingly mandate that developers be able to encode complex application logic and control transaction latencies in in-memory databases. At the same time, infrastructure engineers in these domains need to experiment with and deploy OLTP database architectures that ensure application scalability and maximize resource utilization in modern machines. In this paper, we propose a relational actor programming model for in-memory databases as a novel, holistic approach towards fulfilling these challenging requirements. Conceptually, relational actors, or reactors for short, are application-defined, isolated logical actors that encapsulate relations and process function calls asynchronously. Reactors ease reasoning about correctness by guaranteeing serializability of application-level function calls. In contrast to classic transactional models, however, reactors allow developers to take advantage of intra-transaction parallelism and state encapsulation in their applications to reduce latency and improve locality. Moreover, reactors enable a new degree of flexibility in database deployment. We present ReactDB, a system design exposing reactors that allows for flexible virtualization of database architecture between the extremes of shared-nothing and shared-everything without changes to application code. Our experiments illustrate latency control, low overhead, and asynchronicity trade-offs with ReactDB in OLTP benchmarks.
description: Extended version of SIGMOD 2018 paper with an expanded appendix consisting of additional experiments, figures and code examples
Numerical simulation of dynamics of block media by movable lattice and movable automata methods
Creators: name: Filippov, Alexander E.
name: Popov, Valentin L.
Publisher: name: University of Nis
Year: 2023
Subjects: subject: 600 Technik, Medizin, angewandte Wissenschaften::620 Ingenieurwissenschaften::620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
subject: Burridge-Knopoff model
subject: friction
subject: tectonics
subject: Voronoi diagram
subject: Delaunay triangulation

description: Two versions of modified Burridge-Knopoff model including state dependent friction, elastic force and thermal conductivity are derived. The friction model describes a velocity weakening of friction and elasticity between moving blocks and an increase of both static friction and rigidity during stick periods as well their weakening during motion. It provides a simplified but qualitatively correct behavior including the transition from smooth sliding to stick-slip behavior, which is often observed in various tribological and tectonic systems. Attractor properties of the model dynamics is studied also. The alternative versions of the model are proposed which apply a simulation of the motion of interacting elastically connected mesh elements and motion of relatively large solid blocks, utilizing technique of the movable cellular automata. First version of the model was already basically studied before. Its advanced version here involves all components of the real system: state-depending friction and changeable rigidity, as well as heat production and thermal conductivity. Model based on the movable automata also involves the components included into traditional lattice model. It has its own ad-vantages and disadvantages which are also discussed in the paper.
On the Unruh effect, trajectories and information
Creators: name: Ahmadzadegan, Aida
name: Kempf, Achim
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We calculate the trajectories which maximize the Unruh effect, mode by mode, when given a fixed energy budget for acceleration. We find that Unruh processes are most likely to occur, and therefore potentially best observable, for certain trajectories whose acceleration is not uniform. In practice, the precise form of optimal trajectories depends on experimental bounds on how fast the acceleration can be changed. We also show that the Unruh spectra of arbitrarily accelerated observers contain the complete information to reconstruct the observers' trajectories.
description: 12 pages, 3 figures
Critical percolation in the dynamics of the 2d ferromagnetic Ising model
Creators: name: Blanchard, Thibault
name: Cugliandolo, Leticia F.
name: Picco, Marco
name: Tartaglia, Alessandro
Publisher: name: arXiv
Year: 2017
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the early time dynamics of the 2d ferromagnetic Ising model instantaneously quenched from the disordered to the ordered, low temperature, phase. We evolve the system with kinetic Monte Carlo rules that do not conserve the order parameter. We confirm the rapid approach to random critical percolation in a time-scale that diverges with the system size but is much shorter than the equilibration time. We study the scaling properties of the evolution towards critical percolation and we identify an associated growing length, different from the curvature driven one. By working with the model defined on square, triangular and honeycomb microscopic geometries we establish the dependence of this growing length on the lattice coordination. We discuss the interplay with the usual coarsening mechanism and the eventual fall into and escape from metastability.
description: 67 pages, 33 figures
Spielregeln und AkteurInnen: Politisches Wissen als Ressource verschiedener Formen politischer Partizipation
Creators: name: Johann, David
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: In Ermangelung adäquater Daten zur Messung spezifischen politischen Faktenwissens scheinen sich Politikwissenschaftler mit der Vorstellung abgefunden zu haben, dass politisches Wissen für politische Partizipation generell förderlich ist und überprüfen nicht, ob sich spezifisches Wissen in unterschiedlicher Weise auf die Teilnahme an verschiedenen Formen politscher Partizipation auswirkt. Der vorliegende Artikel geht dieser Frage nach und zeigt, dass die herkömmliche Annahme unzureichend ist und verschiedene Typen politischen Faktenwissens tatsächlich in unterschiedlicher Weise die Teilnahmeabsicht an verschiedenen Formen politischer Partizipation beeinflussen.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 4 (2011): Public policy analysis und die interpretative Wende
title: A rare case of maxillary artery branch pseudoaneurysm
Creators: name: Alavala, Samhitha
Publisher: name: EURORAD
Year: 2024
Subjects: subject: Head & neck imaging
subject: Head and neck
subject: Interventional vascular
subject: CT
subject: CT-Angiography
subject: Embolisation
subject: Aneurysms
subject: Clinical Case

description: Clinical History: An adult male, with no significant past medical history, presented to Accident & Emergency with episodes of right-sided epistaxis following extraction of the upper right wisdom tooth. Upon initial review, it was felt the bleeding was of nasal origin; however, following repeat episodes, concerns were raised for underlying pathology.

description: 42 years, male
Whole Graph Embedding Methods and Their Performance
Creators: name: Szakács, Lili Kata
Publisher: name: Zenodo
Year: 2023

description: In this thesis, I studied various whole graph embedding methods, ranging from simple baseline algorithms to state-of-the-art solutions.
 I employed two different classification measures to compare carefully selected methods. An important consideration was the runtime efficiency, especially for handling large graphs as they occur in real-life applications.
Space-time CFTs from the Riemann sphere
Creators: name: Adamo, Tim
name: Monteiro, Ricardo
name: Paulos, Miguel F.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider two-dimensional chiral, first-order conformal field theories governing maps from the Riemann sphere to the projective light cone inside Minkowski space -- the natural setting for describing conformal field theories in two fewer dimensions. These theories have a SL(2) algebra of local bosonic constraints which can be supplemented by additional fermionic constraints depending on the matter content of the theory. By computing the BRST charge associated with gauge fixing these constraints, we find anomalies which vanish for specific target space dimensions. These critical dimensions coincide precisely with those for which (biadjoint) cubic scalar theory, gauge theory and gravity are classically conformally invariant. Furthermore, the BRST cohomology of each theory contains vertex operators for the full conformal multiplets of single field insertions in each of these space-time CFTs. We give a prescription for the computation of three-point functions, and compare our formalism with the scattering equations approach to on-shell amplitudes.
description: 34 pages, no figures. v2: typos corrected and some comments added; v3: published version
Kein Raum für Österreich. Der fehlende kritische Umgang mit Raumkonzepten nach 1945 und seine Auswirkungen auf die Gestaltung des Schulunterrichts
Creators: name: Clar, Christoph
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Sozialwissenschaftliche Ansätze besinnen sich in ihren Gesellschaftsanalysen vermehrt auf die Miteinbeziehung räumlicher Komponenten. Untersucht wird dabei die gesellschaftliche Produktion von Räumen/Räumlichkeit(en) sowie deren Bedeutung für gesellschaftliche Praxis. Den deutschsprachigen Sozialwissenschaften wird für die Zeit nach 1945 eine grundsätzliche Berührungsangst betreffend den Begriff Raum attestiert, zurückgeführt auf die politische Aneignung von Raumkonzepten durch die Nationalsozialisten. Die Nachwirkungen der fehlenden Rezeption sozialwissenschaftlicher Überlegungen zur gesellschaftlichen Produktion von (politischen) Räumen wirkten sich auf verschiedene Anwendungsbereiche aus, u.a. auf die Gestaltung des österreichischen Schulunterrichts. Gepaart mit der strukturellen und personellen Kontinuität der österreichischen Forschungs- und Bildungslandschaft resultierte das in einer unkritischen und unreflektierten Vermittlung bestehender räumlicher Verhältnisse. Vorliegender Artikel untersucht mögliche Zusammenhänge zwischen den gegenständlichen wissenschaftshistorischen Entwicklungen und der inhaltlichen Gestaltung des österreichischen Schulunterrichts.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 4 (2011): Public policy analysis und die interpretative Wende
Cubic Interaction Vertices and One-loop Self-energy in the Stable String Bit Model
Creators: name: Chen, Gaoli
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We provide a formalism to calculate the cubic interaction vertices of the stable string bit model, in which string bits have $s$ spin degrees of freedom but no space to move. With the vertices, we obtain a formula for one-loop self-energy, i.e., the $\mathcal{O}\left(1/N^{2}\right)$ correction to the energy spectrum. A rough analysis shows that, when the bit number $M$ is large, the ground state one-loop self-energy $ΔE_{G}$ scale as $M^{5-s/4}$ for even $s$ and $M^{4-s/4}$ for odd $s$. Particularly, in $s=24$, we have $ΔE_{G}\sim 1/M$, which resembles the Poincaré invariant relation $P^{-}\sim 1/P^{+}$ in $(1+1)$ dimensions. We calculate analytically the one-loop correction for the ground energies with $M=3$ and $s=1,\,2$. We then numerically confirm that the large $M$ behavior holds for $s\leq4$ cases.
description: 33 pages, 14 figures, update to the published version
Das unvollständige Projekt. Bestandsaufnahme der österreichischen Politikwissenschaft
Creators: name: König, Thomas
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Als Studienrichtung und Forschungsrichtung ist die Politikwissenschaft in Österreich heute, rund 40 Jahre nach ihrer Gründung, etabliert. Ausstattung und Ressourcenzuteilung sind freilich knapp. Und was macht die Disziplin Politikwissenschaft in Österreich eigentlich aus? Der vorliegende Diskussionsbeitrag argumentiert, dass dieses „Projekt“ Politikwissenschaft weitgehend aus dem Blickfeld seiner AkteurInnen geraten ist, und plädiert dafür, in der Disziplin wieder Räume für Diskussion zu schaffen.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
Humane embryonale Stammzellforschung – vom Diskurs über den Status des Embryos bis zu praktischen rechtlichen Lösungen der EU-Mitgliedstaaten
Creators: name: Druml, Christiane
name: Wolfslehner, Doris
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Beitrag analysiert die Berichte und Stellungnahmen der Nationalen Bioethikkommissionen der EU-15 zur Forschung an humanen embryonalen Stammzellen (hES). Diese weisen eine weitgehend homogene Struktur auf und behandeln naturwissenschaftliche, rechtliche und ethische Aspekte des Themas. Im Rahmen der Behandlung der ethischen Aspekte wird herausgearbeitet, dass die deutsche und italienische Diskussion zur Forschung an hES nicht über die Frage des moralischen und rechtlichen Status des Embryos hinaus kommt, während der Angelpunkt der Diskussionen der anderen Mitgliedstaaten der EU-15 der Schutz von Frauen ist, die sich im Rahmen der Gewinnung von Eizellen einer belastenden Behandlung unterziehen müssen. Diese Behandlung wird in Bezug auf ein Elternprojekt anders bewertet als für die Herstellung von hES zur Forschung. Daran anknüpfend wird argumentiert, dass sich dieser Unterschied in der ethischen Diskussion direkt auf die nationale Gesetzgebung im genannten Bereich auswirkt, wodurch Deutschland und Italien zu anderen rechtlichen Lösungen des Bereiches gefunden haben als das Gros der übrigen Mitgliedstaaten der EU-15. Weiters bietet der Beitrag einen Exkurs zur österreichischen Diskussion zur Forschung an hES in der Bioethikkommission beim Bundeskanzleramt.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
Postdemokratie, Ironie und Gerechtigkeit – zum Umgang mit dem Enttäuschungspotenzial demokratischer Herrschaft
Creators: name: Sack, Detlef
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Artikel beschäftigt sich mit dem Postulat der Ironie in der aktuellen demokratietheoretischen Debatte. Ausgangspunkt der Argumentation ist die unvermeidliche Enttäuschung, die Demokratien immanent ist. Im Rahmen der Diskussion um Postdemokratie werden konkrete Defizite benannt, die Unzufriedenheit erzeugen. Die Immanenz der Enttäuschung wird darüber hinaus insbesondere darauf zurückgeführt, dass die demokratietheoretische Debatte durch unterschiedliche Strömungen und Demokratiemodelle geprägt ist. Da diese im Widerstreit liegen und zugleich jeweils interne Dilemmata aufweisen, führen sie nicht zu einer konsensualen und stabilen Grundlegung der demokratischen Herrschaftsform. Exemplarisch wird dies anhand eines Vergleichs zwischen der kosmopolitischen Demokratietheorie und dem agonistischen Pluralismus diskutiert. Angesichts des immanenten Enttäuschungspotenzials von Demokratie wird auf das Postulat der Ironie eingegangen, das als gouvernementale Anforderung der begrenzten Selbstentfremdung und der engagierten Distanzierung in der demokratietheoretischen Diskussion eine Renaissance erfahren hat. Da dieses Postulat der Ironie inhaltlich unterbestimmt ist und regressiv wie emanzipativ ausgeprägt sein kann, wird dessen institutionelle Einbettung bedeutsam. Mit Rekurs auf das duale Gerechtigkeitskonzept von Fraser wird hervorgehoben, dass Ironie durch Regeln der Anerkennung und Umverteilung gestützt werden muss.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
Die politische Rationalität des Neoliberalismus – eine demokratietheoretische Betrachtung im Anschluss an Wendy Brown
Creators: name: Wöhl, Stefanie
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Artikel beschreibt demokratietheoretische Konsequenzen einer politischen Rationalität des Neoliberalismus, wie sie speziell von der amerikanischen Politikwissenschaftlerin Wendy Brown ausformuliert wurden. Der Fokus des Artikels liegt neben der theoretischen Analyse einer politischen Rationalität des Neoliberalismus auf dessen Auswirkungen auf die Institutionen der liberalen Demokratie, wie freie Wahlen, politische Öffentlichkeit sowie Verrechtlichungsprozesse. Es wird der zentralen Frage anhand von aktuellen Beispielen nachgegangen, inwiefern durch eine neoliberale politische Rationalität und durch Verrechtlichungsprozesse eine machtpolitische Verschiebung zwischen den Institutionen der liberalen Demokratie stattfindet und zentrale demokratietheoretische Begriffe in eine ökonomische Marktrationalität umgedeutet werden.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
Demokratietheorie im Zeitalter post-neoliberaler Austerität
Creators: name: Werner, Alban
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Aktuelle Krisenerscheinungen der Demokratie haben tiefere Grundlagen in der Struktur bürgerlicher Gesellschaften, die sich durch kapitalistische Dynamik und formale Organisiertheit ihrer sozialen Kontexte auszeichnen. Unter den Bedingungen fiskalischer Austerität gelingt es in diesen Gesellschaften nicht mehr, AkteurInnen hervorzubringen, die politische Kompromisse zulasten der ökonomisch Mächtigen erzwingen. Anstatt hegemonialer Politik wird die gegenwärtige Phase deswegen geprägt von gesellschaftlicher Disziplinierung, in der Rechte und Pflichten der BürgerInnen zulasten von SozialstaatsklientInnen neu justiert werden.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
title: Transparency Techniques for Neural Networks trained on Writer Identification and Writer Verification
Creators: name: Pundy, Viktoria
Publisher: name: TU Wien
Year: 2023
Subjects: subject: Document analysis
subject: writer identification
subject: writer verification
subject: transparency techniques
subject: Neural Networks
subject: Document analysis
subject: writer identification
subject: writer verification
subject: transparency techniques
subject: neural

description: Neural Networks are the state of the art for many tasks in the computer vision domain [SBM+17, ZTLT21]. This also includes the areas of Writer Identification and Writer Verification, where the goal is to identify the author of a handwritten text. A more novel task is the interpretability of neural networks, which are considered ”black box” systems, and to provide an explanation for the decision process of the neural network [SBM+17, HVH22, GMR+18, ZTLT21]. These explanations are used to improve the system performance, reveal possible artefacts in the training data and increase the reliability of such systems in safety-critical areas [SM19]. In this thesis, two transparencytechniques are applied to neural networks trained on Writer Identification and Writer Verification. The first transparency technique provides pixel-level saliency maps, where a significance value is assigned to each individual pixel. The second transparency technique provides two types of saliency maps, where one type shows overall similarities between two images and the second type displays similarities between one point in the first image and the overall second image. The goal is to support forensic experts with a visualization providing information on similarities in handwritten text inputs. Further, the thesis aims to explore the characteristics selected by a neural network to identify the author of a handwritten text. Three neural network architectures, namely ResNet18, ResNet20 and ResNet50, are selected based on methodologies proposed in the state of the art. The transparency techniques are adjusted for use with these specific networks and areevaluated using the deletion- and insertion score metrics. Furthermore, a qualitative evaluation is conducted, where the visualizations are compared to the areas forensic experts consider during the identification process of an author. The evaluation results show that the pixel-wise saliency map technique performs better than the point-specific saliency map technique, where the displayed highlightings are difficult to allocate to a certain character. The pixel-wise saliency maps display similar highlighting patterns for multiple occurrences of the same character, indicating a similar analysis process asapplied by a forensic expert. Overall, the pixel-wise saliency maps display characteristics suitable for the support of a forensic expert, while the point-specific saliency maps are not suitable due to non-intuitive highlightings.
Elemental Analysis of Glass and Bakelite Electrodes Using PIXE Facility
Creators: name: Manisha
name: Bhatnagar, V.
name: Shahi, J. S.
name: Verma, S.
name: Mohanty, B. P.
name: Kumar, A.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The evolution of particle detectors dates back to the discovery of X-rays and radioactivity in 1890s. In detector history, the Resistive Plate Chambers (RPCs) are introduced in early 1980s. An RPC is a gaseous detector made up of two parallel electrodes having high resistivity like that of glass and bakelite. Currently several high energy physics experiments are using RPC-based detector system due to robustness and simplicity of construction. In each and every experiment, RPCs have to run continuously for several years. So, it demands an in-depth characterization of the electrode materials. In the present study, an elemental analysis of locally available glass and bakelite samples is done using PIXE facility available at Panjab University Cyclotron, Chandigarh. PIXE measurements are done using 2.7 MeV proton beam incident on the electrode sample target. The constituent elements present in these electrode samples are reported.
description: 4 pages, 1 figures, 1 table; Presented in XXII DAE-BRNS High Energy Physics Symposium 2016
Demokratie in neuen Räumen. Ein theoriegeschichtlicher Vergleich
Creators: name: Jörke, Dirk
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: In dem Beitrag erfolgt ein Vergleich der gegenwärtigen Debatten über die Demokratisierung der Prozesse des Weltregierens mit politiktheoretischen Kontroversen im Kontext der Amerikanischen Revolution. Dabei treten drei Parallelen hervor. Erstens erfolgt in beiden Epochen eine Erneuerung der grundlegenden demokratischen Institutionen und Praktiken, namentlich der Übergang von einem radikalen zu einem repräsentativen bzw. von einem repräsentativen zu einem deliberativen Begriff von Demokratie. Zum Zweiten geht diese Erneuerung in beiden Fällen mit einer semantischen Transformation des Demokratiebegriffes einher. Drittens lässt sich die Übertragung demokratischer Verfahren und Legitimationsmuster auf größere Räume nur um den Preis einer Abschwächung der Mechanismen der Elitenkontrolle erreichen.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 1 (2011): Demokratietheorie vor dem Hintergrund neuer Phänomene. Klassische und neue Perspektiven
Explicit Formulae for Yang-Mills-Einstein Amplitudes from the Double Copy
Creators: name: Chiodaroli, Marco
name: Gunaydin, Murat
name: Johansson, Henrik
name: Roiban, Radu
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Using the double-copy construction of Yang-Mills-Einstein theories formulated in our earlier work, we obtain compact presentations for single-trace Yang-Mills-Einstein tree amplitudes with up to five external gravitons and an arbitrary number of gluons. These are written as linear combinations of color-ordered Yang-Mills trees, where the coefficients are given by color/kinematics-satisfying numerators in a Yang-Mills+ϕ^3 theory. The construction outlined in this paper holds in general dimension and extends straightforwardly to supergravity theories. For one, two, and three external gravitons, our expressions give identical or simpler presentations of amplitudes already constructed through string-theory considerations or the scattering equations formalism. Our results are based on color/kinematics duality and gauge invariance, and strongly hint at a recursive structure underlying the single-trace amplitudes with an arbitrary number of gravitons. For the single-graviton case, we give amplitudes to any loop order and obtain, through gauge invariance, new loop-level amplitude relations for Yang-Mills theory.
description: 36 pages, 3 figures, v2: minor corrections, journal version
Politics & Law. So nah und doch so fern
Creators: name: Ehs, Tamara
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Beitrag stellt eine Replik auf die in Heft 1/2011 angeregte Diskussion über die Zukunft der Politikwissenschaft in Österreich dar. Anhand der Teildisziplin „Politik und Recht“ zeige ich Auslassungen und Möglichkeiten politikwissenschaftlicher Lehre und Forschung auf. Ich schlage vor, nicht nur mehr Rechtslehre bereits im Bachelorstudium zu verankern, sondern einen staatswissenschaftlichen Masterstudiengang einzurichten und die Grazer Juristenpolitologie in die innerdisziplinäre Diskussion miteinzubeziehen.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 2 (2011): Herausforderungen und Gefährdungen der Demokratie durch neue Bedingungen und AkteurInnen
Discriminantal Arrangement, $3\times3$ Minors of Plücker Matrix and hypersurfaces in Grassmannian $Gr(3,n)$
Creators: name: Sawada, S.
name: Settepanella, S.
name: Yamagata, S.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 52C35, 05B35, 14M15

description: We show that points in specific degree 2 hypersurfaces in the Grassmannian $Gr(3, n)$ correspond to generic arrangements of $n$ hyperplanes in $\mathbb{C}^3$ with associated discriminantal arrangement having intersections of multiplicity three in codimension two.
description: 12 pages, 1 figure
Jenseits altbekannter Pfade: Liberale Demokratie unter Druck. Das Beispiel Bolivien
Creators: name: Ernst, Tanja
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Ausgehend vom wachsenden Spannungsverhältnis zwischen dem weiterhin bestehenden Universalitätsanspruch und der offenkundigen Legitimationskrise des weltweit nach wie vor dominanten liberal-demokratischen Leitbildes problematisiert der Artikel, wie sich soziale Ungleichheiten respektive mangelnde Umverteilung und fehlende Anerkennung in postkolonialen Gesellschaften auf die demokratische Teilhabe von gesellschaftlichen Mehrheiten auswirken. Am Beispiel des bolivianischen Transformationsprozesses wird dargelegt, dass die Demokratisierung der bolivianischen Demokratie nicht länger nur auf die verbesserte Inklusion der bisher Ausgeschlossenen ins herrschende System zielt. Anknüpfend an die Überlegungen von Nancy Fraser zur partizipatorischen Parität wird dabei untersucht, inwiefern sich eine grundlegende Transformation der gesellschaftspolitischen Spielregeln andeutet, die zukünftig die Vielfalt demokratischer Praxen und Verfahren erlaubt und somit über das liberal-demokratische Paradigma hinausweist.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 2 (2011): Herausforderungen und Gefährdungen der Demokratie durch neue Bedingungen und AkteurInnen
Formulation of an antiseptic topical cream based on chitosan extracted from the scales of the Nile tilapia (Oreochromis niloticus)
Creators: name: Poughella, Suzane
name: Ngomo, Orléans
name: Tsatsop, Roli Karole
name: Meple, Stéphane
name: Emmanuel, Talla
name: Sieliechi, Joseph
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: The Nile tilapia is a widely consumed fish, its scales dumped in nature as waste have been recovered in the formulation of antiseptic creams because of its high content in chitin, precursor of chitosan. Creams have the advantage of being more comfortable on the skin and allow prolonged administration of the active ingredient. Chitosan is obtained with a yield of 21.2%. FTIR analysis of chitosan showed numerous bands of phase groups present and a successful deacetylation assessed on the intensity of the bands at 1650 cm−1 and 1315 cm−1 and confirm by SEM analysis with an abundance of Carbone followed by EDS analysis. Solubilisation of chitosan in 2% acetic acid at 96% and the antibacterial activity test revealed antibacterial activity on Escherichia coli. The viscosity and the optimum spreading capacity of the cream base has been obtained at 14.65% for sesame oil, 9.08% for lanette and 1.26% for glycerine.
Demystifying the compressed top squark region with kinematic variables
Creators: name: Konar, Partha
name: Mondal, Tanmoy
name: Swain, Abhaya Kumar
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The ongoing perplexing scenario with no hints of new physics at the Large Hadron Collider can be elucidated amicably if the exotic particle spectrum in many of the well-motivated theoretical models possesses degenerate mass. We investigate the usefulness of different kinematic variables sensitive to the compressed mass region, and propose a search strategy considering a phenomenological supersymmetric scenario where the top squark undergoes a four-body decay due to its extremely narrow mass difference with the lightest supersymmetric particle. Considering a challenging but relatively clean dileptonic decay channel, we demonstrate that one can effectively restrain the significant background from the top quark, which provides a complementary approach to the present CMS analysis. With the new strategic approach the current limit can be extended to a phase-space region that was not explored before.
description: 6 pages, 3 figures, 1 table, Improved analysis and cut flow table added, Results unchanged, Matches with published version of PRD
Cardiac telomere attrition following changes in the expression of shelterin genes in pulmonary hypertensive chickens
Creators: name: Hassanpour, H.
name: Farhadi, N.
name: Bahadoran, S.
name: Akbari, M. R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Developmental Biology
subject: Computational Biology

description: 1. The alterations of relative telomere length and expression of shelterin genes (TRF1, TRF2, RAP1, POT1, and TPP1) were evaluated from the chickens’ right heart ventricle in the early and last stages of cold-induced pulmonary hypertension (PHS) at 21 and 42 d of age. 2. The relative telomere length in the right ventricular tissues was significantly shorter in the PHS group of broilers than in the control group at 42 d, but did not statistically change at 21 d of age. There was a significant negative correlation between relative telomere length and RV:TV ratio in the broilers at 42 d of age. 3. The relative expression of POT1, RAP1 and TPP1 genes in the right ventricular tissues was significantly lower in the PHS group than in the control group at 21 d. The relative expression of the TRF2 gene was only higher in the PHS group of broilers than control at 42 d. The mRNA level of the TRF2 gene exhibited a significant positive correlation with RV:TV ratio at 42 d. 4. It was concluded that most shelterin genes are dysregulated in the early stage of PHS (right ventricular hypertrophy) while telomere attrition occurs only at the last stage (heart dilation/failure).
Linking High-Energy Cosmic Particles by Black-Hole Jets Embedded in Large-Scale Structures
Creators: name: Fang, Ke
name: Murase, Kohta
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The origin of ultrahigh-energy cosmic rays (UHECRs) is a half-century old enigma (Linsley 1963). The mystery has been deepened by an intriguing coincidence: over ten orders of magnitude in energy, the energy generation rates of UHECRs, PeV neutrinos, and isotropic sub-TeV gamma rays are comparable, which hints at a grand-unified picture (Murase and Waxman 2016). Here we report that powerful black hole jets in aggregates of galaxies can supply the common origin of all of these phenomena. Once accelerated by a jet, low-energy cosmic rays confined in the radio lobe are adiabatically cooled; higher-energy cosmic rays leaving the source interact with the magnetized cluster environment and produce neutrinos and gamma rays; the highest-energy particles escape from the host cluster and contribute to the observed cosmic rays above 100 PeV. The model is consistent with the spectrum, composition, and isotropy of the observed UHECRs, and also explains the IceCube neutrinos and the non-blazar component of the Fermi gamma-ray background, assuming a reasonable energy output from black hole jets in clusters.
description: 7+6 pages, 2+2 figures, published in Nature Physics Letters in Apr/2018 (published online in Jan/2018)
Postdemokratie und Postsozialismus: Zur Konvergenz zweier Krisen am Beispiel Russlands
Creators: name: Knobloch, Jörn
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Beitrag erweitert die Diskussion um die Postdemokratie und vergleicht sie mit dem Postsozialismus. Dazu wird unter Auswertung der wissenschaftlichen Debatte ein analytisches Postdemokratiekonzept thematisiert. Dessen exemplarischer Vergleich mit dem postsozialistischen Russland offenbart, dass beide Post-Systeme durch die Globalisierung entstanden sind. Der Postsozialismus erweist sich dabei als Trendsetter für die Postdemokratie. Er macht deutlich, dass bei einer weiteren Aushöhlung der Postdemokratie nur eine autoritäre Mimikry der Demokratie übrig bleibt.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 2 (2011): Herausforderungen und Gefährdungen der Demokratie durch neue Bedingungen und AkteurInnen
Quantum speed limits: from Heisenberg's uncertainty principle to optimal quantum control
Creators: name: Deffner, Sebastian
name: Campbell, Steve
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: One of the most widely known building blocks of modern physics is Heisenberg's indeterminacy principle. Among the different statements of this fundamental property of the full quantum mechanical nature of physical reality, the uncertainty relation for energy and time has a special place. Its interpretation and its consequences have inspired continued research efforts for almost a century. In its modern formulation, the uncertainty relation is understood as setting a fundamental bound on how fast any quantum system can evolve. In this Topical Review we describe important milestones, such as the Mandelstam-Tamm and the Margolus-Levitin bounds on the quantum speed limit, and summarise recent applications in a variety of current research fields -- including quantum information theory, quantum computing, and quantum thermodynamics amongst several others. To bring order and to provide an access point into the many different notions and concepts, we have grouped the various approaches into the minimal time approach and the geometric approach, where the former relies on quantum control theory, and the latter arises from measuring the distinguishability of quantum states. Due to the volume of the literature, this Topical Review can only present a snapshot of the current state-of-the-art and can never be fully comprehensive. Therefore, we highlight but a few works hoping that our selection can serve as a representative starting point for the interested reader.
description: Topical Review in J. Phys. A; 52 pages, 4 figures, 282 references
Cardiac telomere attrition following changes in the expression of shelterin genes in pulmonary hypertensive chickens
Creators: name: Hassanpour, Hossein
name: Farhadi, Navid
name: Bahadoran, Shahab
name: Akbari, Mohammad Reza
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Developmental Biology
subject: Computational Biology

description: 1. The alterations of relative telomere length and expression of shelterin genes (TRF1, TRF2, RAP1, POT1, and TPP1) were evaluated from the chickens’ right heart ventricle in the early and last stages of cold-induced pulmonary hypertension (PHS) at 21 and 42 d of age. 2. The relative telomere length in the right ventricular tissues was significantly shorter in the PHS group of broilers than in the control group at 42 d, but did not statistically change at 21 d of age. There was a significant negative correlation between relative telomere length and RV:TV ratio in the broilers at 42 d of age. 3. The relative expression of POT1, RAP1 and TPP1 genes in the right ventricular tissues was significantly lower in the PHS group than in the control group at 21 d. The relative expression of the TRF2 gene was only higher in the PHS group of broilers than control at 42 d. The mRNA level of the TRF2 gene exhibited a significant positive correlation with RV:TV ratio at 42 d. 4. It was concluded that most shelterin genes are dysregulated in the early stage of PHS (right ventricular hypertrophy) while telomere attrition occurs only at the last stage (heart dilation/failure).
Demokratisierung regionaler Wirtschafts- und Strukturpolitik als Krisenantwort? Gewerkschaftliche Initiativen seit den 1970er-Jahren auf dem Prüfstand
Creators: name: Röttger, Bernd
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: Der Beitrag untersucht historisch vergleichend gewerkschaftliche Krisenregulierungen in den Regionen: Forderungen nach Rüstungskonversion und gesellschaftlich nützliche Produkte in den 1970er- und 1980er-Jahren, Beteiligungen an regionaler Clusterpolitik in den 1990er-Jahren und neue Ansätze zum demokratischen Umbau des sozio-ökonomischen Entwicklungsmodells in der jüngsten Krise des Kapitalismus. Die Befunde zeigen, dass gewerkschaftliche Alternativen oft in „Integrationslogik“ kapitalistischer Modernisierung verwandelt werden konnten. Gewerkschaften können sich immer weniger der bestehenden institutionellen Konfigurationen regionaler Politik bedienen, sondern müssen durch autonome Praktiken „von unten“ die Bedingungen immer wieder neu herstellen, die demokratische Alternativen in den Regionen erst ermöglichen.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 2 (2011): Herausforderungen und Gefährdungen der Demokratie durch neue Bedingungen und AkteurInnen
Determination of standardised ileal digestibility of amino acids in high-fibre feedstuffs and additivity of apparent and standardised ileal amino acids digestibility of diets containing mixtures of maize, sorghum, and soybean meal
Creators: name: Olukosi, O. A.
name: Pilevar, M.
name: Ajao, A. M.
name: Veluri, S.
name: Lin, Y.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Ecology
subject: Plant Biology

description: 1. Two experiments were conducted to determine the coefficients of standardised ileal amino acid digestibility for selected high-fibre feedstuffs (Expt.1) and to assess the additivity of coefficients of apparent (cAIAAD) and standardised (cSIAAD) ileal amino acid digestibility for diets containing combinations of sorghum, maize and soybean meal. 2. In Expt. 1, broiler chickens (324) were allocated to 54 metabolism cages (nine diets with six replicates). In Expt. 2, broiler chickens (315) were allocated to 63 metabolism cages (seven diets with nine replicates). The diets in Expt. 1 were a nitrogen-free diet plus eight semi-purified diets in which soybean meal (SBM), low-protein SBM (LPSBM), soybean hull, wheat bran, maize bran, rice bran, dried sugarbeet pulp or maize gluten feed were the only sources of protein in the respective diets. In Expt. 2, the seven diets were a nitrogen-free diet, and six semi-purified diets consisting of individual feedstuffs (SBM, maize, or sorghum) or combinations (maize and SBM; sorghum and SBM; or maize, sorghum, and SBM) as the only sources of protein. 3. In both experiments, all the broiler chickens received the same maize-SBM diet formulated to meet nutrient requirements according to the breeder’s recommendations from d 0 to 16. Allocated experimental diets were provided on d 16, and ileal digesta were collected on d 21. 4. In Expt. 1, SBM and LPSBM had greater (P < 0.01) cSIAAD for indispensable and dispensable amino acids than the other feedstuffs. The rice bran had greater (P<0.01) cSIAAD values than wheat bran and maize bran, except for Leu, Cys, and Pro. 5. In Expt. 2, predicted cAIAAD values for maize-SBM and maize-sorghum-SBM were generally lower (P<0.01) than actual values. The actual and predicted cSIAAD values for maize-SBM, sorghum-SBM and maize-sorghum-SBM combinations were not significantly different. 6. It was concluded that the standardised amino acid digestibility of sorghum, when combined with other feedstuffs, was additive and that approximately three-quarters of total amino acids in the assayed high-fibre feedstuffs, except for dried sugarbeet pulp and maize gluten feed, were digestible.
A Novel Derivation of the Boundary Term for the Action in Lanczos-Lovelock Gravity
Creators: name: Chakraborty, Sumanta
name: Parattu, Krishnamohan
name: Padmanabhan, T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a novel derivation of the boundary term for the action in Lanczos-Lovelock gravity, starting from the boundary contribution in the variation of the Lanczos-Lovelock action. The derivation presented here is straightforward, i.e., one starts from the Lanczos-Lovelock action principle and the action itself dictates the boundary structure and hence the boundary term one needs to add to the action to make it well-posed. It also gives the full structure of the contribution at the boundary of the complete action, enabling us to read off the degrees of freedom to be fixed at the boundary, their corresponding conjugate momenta and the total derivative contribution on the boundary. We also provide a separate derivation of the Gauss-Bonnet case.
description: 28 pages
PATCHWORK: A Multipatch Infrastructure for Multiphysics/Multiscale/Multiframe Fluid Simulations
Creators: name: Shiokawa, Hotaka
name: Cheng, Roseanne M.
name: Noble, Scott C.
name: Krolik, Julian H.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present a "multipatch" infrastructure for numerical simulation of fluid problems in which sub-regions require different gridscales, different grid geometries, different physical equations, or different reference frames. Its key element is a sophisticated client-router-server framework for efficiently linking processors supporting different regions ("patches") that must exchange boundary data. This infrastructure may be used with a wide variety of fluid dynamics codes; the only requirement is that their primary dependent variables be the same in all patches, e.g., fluid mass density, internal energy density, and velocity. Its structure can accommodate either Newtonian or relativistic dynamics. The overhead imposed by this system is both problem- and computer cluster architecture-dependent. Compared to a conventional simulation using the same number of cells and processors, the increase in runtime can be anywhere from negligible to a factor of a few; however, one of the infrastructure's advantages is that it can lead to a very large reduction in the total number of zone-updates.
description: 24 pages, 15 figures, accepted for publication in ApJ
Geoscience; EURAD Theme Overview
Creators: name: Gautschi, Andreas
name: Chapman, Neil
Publisher: name: Zenodo
Year: 2021
Subjects: Geological environment
Geological setting
Groundwater

description: The roadmap describes typical programme goals, activities and capabilities needed against 7 themes, which are each further broken down into sub-themes and domains in what we can call the Goals Breakdown Structure (GBS). Theme n°4 - Geoscience goal is to assemble geological information for site selection, facility design and demonstration of safety.
Die Krise der Demokratien: Wahlautokratie, Klassenpolitik mit leeren Händen, Kulturalisierung
Creators: name: Gallas, Alexander
name: Nowak, Jörg
Publisher: name: Österreichische Zeitschrift für Politikwissenschaft
Year: 2015

description: In unserem Artikel skizzieren wir einen materialistischen Ansatz zur Analyse der Beziehung zwischen Kapitalismus und Demokratie und untersuchen mit Bezugnahme auf Großbritannien und Deutschland die Auswirkungen der gegenwärtigen Wirtschaftskrise auf demokratische Verfahren. U.E. wird die Infrastruktur klassenbasierter politischer Repräsentation beseitigt, wodurch politische Strategien systematisch blockiert sind, die Forderungen von subalternen Gruppen berücksichtigen. Das Resultat ist ein Zustand der Wahlautokratie, in dem Regierungen Klassenpolitik mit leeren Händen betreiben und Strategien verfolgen, die auf die durch vermeintliche Sparzwänge legitimierte Einschränkung von Staatsausgaben und die Disziplinierung von MigrantInnengruppen zentriert sind.
description: Österreichische Zeitschrift für Politikwissenschaft, Bd. 40 Nr. 2 (2011): Herausforderungen und Gefährdungen der Demokratie durch neue Bedingungen und AkteurInnen