cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The darknet’s anonymity dilemma
Creators: name: Tzanetakis, Meropi
name: University Of Vienna
Publisher: name: Alexander von Humboldt Institute for Internet and Society
Year: 2018
Subjects: darknet, anonymity, power relations, criminalised activities, freedom of expression, security, surveillace

description: The darknet is not just a place for criminalised activities; it facilitates anonymous communication between all those adopting marginalised positions, including human rights activists, dissidents and whistleblowers. They show that our society must face the dilemma between freedom and control. My article seeks to do two things. First, I would like to explain what lies behind the term darknet. By sharpening our understanding of the term, I would like to help demystify the darknet. Second, I would like to discuss a fundamental dilemma associated with the darknet as a place both for criminalised activities and freedom of expression. Finding a way to deal with this seemingly irresolvable contradiction between power and freedom should, in my opinion, be part of a broader societal process of negotiation. It is to this process that I wish to contribute with this article.
First Principles, Explicit Interface Studies of Oxygen Vacancy and Chloride in Alumina Films for Corrosion Applications
Creators: name: Leung, Kevin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Pitting corrosion is a much-studied and technologically relevant subject. However, the fundamental mechanisms responsible for the breakdown of the passivating oxide layer are still subjects of debate. Chloride anions are known to accelerate corrosion; relevant hypotheses include Cl insertion into positively charged oxygen vacancies in the oxide film, and Cl adsorption on passivating oxide surfaces, substituting for surface hydroxyl groups. In this work, we conduct large-scale first principles modeling of explicit metal/Al(2)O(3) interfaces to investigate the energetics and electronic structures associated with these hypotheses. The explicit interface models allow electron transfer that mimics electrochemical events, and the establishment of the relation between atomic structures at different interfaces and the electronic band alignment. For multiple model interfaces, we find that doubly charged oxygen vacancies, which are key ingredients of the point defect model (PDM) often used to analyze corrosion data, can only occur in the presence of a potential gradient that raises the voltage. Cl-insertion into oxide films can be energetically favorable in some oxygen vacancy sites, depending on the voltage. We also discuss the challenges associated with explicit DFT modeling of these complex interfaces.
description: 34 pages, 10 figures
AdS_4/CFT_3 -- Squashed, Stretched and Warped
Creators: name: Klebanov, Igor
name: Klose, Thomas
name: Murugan, Arvind
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use group theoretic methods to calculate the spectrum of short multiplets around the extremum of N=8 gauged supergravity potential which possesses N=2 supersymmetry and SU(3) global symmetry. Upon uplifting to M-theory, it describes a warped product of AdS_4 and a certain squashed and stretched 7-sphere. We find quantum numbers in agreement with those of the gauge invariant operators in the N=2 superconformal Chern-Simons theory recently proposed to be the dual of this M-theory background. This theory is obtained from the U(N)xU(N) theory through deforming the superpotential by a term quadratic in one of the superfields. To construct this model explicitly, one needs to employ monopole operators whose complete understanding is still lacking. However, for the U(2)xU(2) gauge theory we make a proposal for the form of the monopole operators which has a number of desired properties. In particular, this proposal implies enhanced symmetry of the U(2)xU(2) ABJM theory for k=1,2; it makes its similarity to and subtle difference from the BLG theory quite explicit.
description: 32 pages, v2: references added, minor changes, v3: some clarifications, published version
Steps Before Syntax: Helping Novice Programmers Solve Problems using the PCDIT Framework
Creators: name: Kurniawan, Oka
name: Jégourel, Cyrille
name: Lee, Norman Tiong Seng
name: De Mari, Matthieu
name: Poskitt, Christopher M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computers and Society (cs.CY)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Novice programmers often struggle with problem solving due to the high cognitive loads they face. Furthermore, many introductory programming courses do not explicitly teach it, assuming that problem solving skills are acquired along the way. In this paper, we present 'PCDIT', a non-linear problem solving framework that provides scaffolding to guide novice programmers through the process of transforming a problem specification into an implemented and tested solution for an imperative programming language. A key distinction of PCDIT is its focus on developing concrete cases for the problem early without actually writing test code: students are instead encouraged to think about the abstract steps from inputs to outputs before mapping anything down to syntax. We reflect on our experience of teaching an introductory programming course using PCDIT, and report the results of a survey that suggests it helped students to break down challenging problems, organise their thoughts, and reach working solutions.
description: Accepted by the 34th Conference on Software Engineering Education and Training (CSEE&T 2022): Special Track of the 55th Hawaii International Conference on System Sciences (HICSS 2022)
Free quasi-symmetric functions and descent algebras for wreath products, and noncommutative multi-symmetric functions
Creators: name: Novelli, Jean-Christophe
name: Thibon, Jean-Yves
Publisher: name: arXiv
Year: 2008
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We introduce analogs of the Hopf algebra of Free quasi-symmetric functions with bases labelled by colored permutations. When the color set is a semigroup, an internal product can be introduced. This leads to the construction of generalized descent algebras associated with wreath products $Γ\wr\SG_n$ and to the corresponding generalizations of quasi-symmetric functions. The associated Hopf algebras appear as natural analogs of McMahon's multisymmetric functions. As a consequence, we obtain an internal product on ordinary multi-symmetric functions. We extend these constructions to Hopf algebras of colored parking functions, colored non-crossing partitions and parking functions of type B.
description: 34 pages; LaTEX
MPEC 2024-C90 : 2024 CP1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 CP1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
The T=0 random-field Ising model on a Bethe lattice with large coordination number: hysteresis and metastable states
Creators: name: Rosinberg, M. L.
name: Tarjus, G.
name: Perez-Reche, F. J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In order to elucidate the relationship between rate-independent hysteresis and metastability in disordered systems driven by an external field, we study the Gaussian RFIM at T=0 on regular random graphs (Bethe lattice) of finite connectivity z and compute to O(1/z) (i.e. beyond mean-field) the quenched complexity associated with the one-spin-flip stable states with magnetization m as a function of the magnetic field H. When the saturation hysteresis loop is smooth in the thermodynamic limit, we find that it coincides with the envelope of the typical metastable states (the quenched complexity vanishes exactly along the loop and is positive everywhere inside). On the other hand, the occurence of a jump discontinuity in the loop (associated with an infinite avalanche) can be traced back to the existence of a gap in the magnetization of the metastable states for a range of applied field, and the envelope of the typical metastable states is then reentrant. These findings confirm and complete earlier analytical and numerical studies.
description: 29 pages, 9 figures
Abstract of: Experimental investigation into the fragment size of tempered glass
Creators: name: Pourmoghaddam, Navid
name: Schneider, Jens
Publisher: name: Challenging Glass Conference Proceedings
Year: 2018

description: This work presents the relation between the fragment density and the permanent residual stress in fragmented tempered glasses of various thicknesses. Therefore, fracture tests were carried out on tempered glass plates and the fragments in observation fields of 50 mm × 50 mm were counted. The average fragment density in the observation fields was set in correlation with the average measured residual stress of each specimen. Furthermore, the average particle weight of 130 particles per specimen chosen by random was determined. The relation between the average particle weight and the measured residual stress is given. The volume and the base surface as well as the radius of the particles are calculated assuming cylindrical fragments with approximately unchanged thicknesses. The relation between the residual stress and the particle base surface of regular polygonal shapes n=3–8 edges in addition to the cylindrical fragment (n→∞) is also determined. The glass used for the fracture tests was commercial soda-lime-silica glass with three different thicknesses 4, 8 and 12 mm. The results in this work are a basis for the establishment of a theoretical model to predict macro-scale fracture patterns from elastic strain energy in tempered glass.
description: Challenging Glass Conference Proceedings, Vol. 6 (2018): Challenging Glass 6
Composite fermion mass enhancement and particle-hole symmetry of fractional quantum Hall states in the lowest Landau level under realistic conditions
Creators: name: Palacios, Eduardo
name: Peterson, Michael R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Particle-hole symmetry breaking in the fractional quantum Hall effect has recently been studied both theoretically and experimentally with most works focusing on non-Abelian states in the second electronic Landau level. In this work, we theoretically investigate particle-hole symmetry breaking of incompressible fractional quantum Hall states in the lowest Landau level under the influence of the realistic effect of a finite magnetic field strength. A finite magnetic field induces Landau level and sub-band mixing which are known to break particle-hole symmetry at the level of the Hamiltonian. We analyze the Haldane pseudopotentials, energy spectra and energy gaps, and the wave functions themselves, under realistic conditions. We find that particle-hole symmetry is broken, as determined by energy gaps, between states related via particle-hole conjugation, however, we find that particle-hole symmetry is largely maintained as determined by the effective mass of composite fermions. Finally, we comment and make connection to recent experimental observations regarding particle-hole symmetry in the lowest Landau level fractional quantum Hall effect [Pan et al. Phys. Rev. Lett. 124, 156801 (2020)]
description: 9 pages, 8 figures, 4 tables
Der Medizinhistoriker als Jäger, Sammler und Präparator. Die Edition der Acta Facultatis Medicae Universitatis Vindobonensis von Leopold Senfelder und der Umgang mit Medizingeschichte zur Jahrhundertwende in Wien
Creators: name: Horn, Sonia
name: Historical, Faculty Of
Publisher: name: Centaurus-Verlagsgesellschaft
Year: 1999

description: Kein Abstract verfügbar
Charge Renormalization, Effective Interactions, and Thermodynamics of Deionized Colloidal Suspensions
Creators: name: Denton, Alan R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Thermodynamic properties of charge-stabilised colloidal suspensions depend sensitively on the effective charge of the macroions, which can be substantially lower than the bare charge in the case of strong counterion-macroion association. A theory of charge renormalization is proposed, combining an effective one-component model of charged colloids with a thermal criterion for distinguishing between free and associated counterions. The theory predicts, with minimal computational effort, osmotic pressures of deionized suspensions of highly charged colloids in close agreement with large-scale simulations of the primitive model.
description: 15 pages, 7 figures
Abstract of: Experimental investigation into the effects of membrane action for continuous reinforced glass beam systems
Creators: name: Martens, Kenny
name: Caspeele, Robby
name: Belis, Jan
Publisher: name: Challenging Glass Conference Proceedings
Year: 2018

description: In contemporary architecture, glass is more and more applied not only to make up the cladding of the building, but also for structural members such as beams and façade fins. The trend to increase the scale of these structural entities makes it increasingly structurally efficient to apply statically indeterminate beam systems. For these systems to be approved, contemporary building codes require them to provide structural safety on an element and system level. Therefore, a lot of hybrid glass beam concepts, in which glass is combined with another material that provides post-fracture capacity, were developed and investigated. Among others, reinforced glass beams have experimentally proven their feasibility for statically determinate (element safety) and indeterminate (system safety) support conditions by providing significant post-fracture capacity, ductility, plastic hinge formation and load redistribution capacity. However, system safety can also benefit from the effects of membrane action, which can result in yet higher post-fracture performance. Moreover, the latter can make a significant contribution to the robustness of a beam system when an accidental event occurs such as collapse of one of the supports. This paper presents experimental test results of statically indeterminate five-point bending tests with clamping end-supports on twelve 4.3 m long stainless steel reinforced beam specimens in which the horizontal membrane forces are assessed. Two series of tests were performed, with and without intermediate support, for two types of beams with varying reinforcement percentage (i.e. solid and hollow profile reinforcement). During the tests, significant compressive as well as tensile membrane action was observed. The effects of the latter on the loadcarrying behaviour is discussed by comparing the load-deflection diagrams with those of similar reinforced glass beam systems without clamped external supports. From this comparison, it is concluded that membrane action provides significant contribution to the load-carrying behaviour of such beam systems. Significantly higher post-fracture capacities can be achieved for both reinforcement sections and both types of tests. It is concluded that membrane action can be incorporated in design, which will lead to more economical, slender and more transparent reinforced glass beam systems.
description: Challenging Glass Conference Proceedings, Vol. 6 (2018): Challenging Glass 6
Automated Symbolic and Numerical Testing of DLMF Formulae using Computer Algebra Systems
Creators: name: Cohl, Howard S.
name: Greiner-Petter, André
name: Schubotz, Moritz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Digital Libraries (cs.DL)
subject: FOS: Computer and information sciences

description: We have developed an automated procedure for symbolic and numerical testing of formulae extracted from the NIST Digital Library of Mathematical Functions (DLMF). For the NIST Digital Repository of Mathematical Formulae, we have developed conversion tools from semantic LaTeX to the Computer Algebra System (CAS) Maple which relies on Youssef's part-of-math tagger. We convert a test data subset of 4,078 semantic LaTeX DLMF formulae %extracted from the DLMF to the native CAS representation and then apply an automated scheme for symbolic and numerical testing and verification. Our framework is implemented using Java and Maple. We describe in detail the conversion process which is required so that the CAS can correctly interpret the mathematical representation of the formulae. We describe the improvement of the effectiveness of our automated scheme through incremental enhancement (making more precise) of the mathematical semantic markup for the formulae.
description: Appeared in the Proceedings of the 11th International Conference on Intelligent Computer Mathematics (CICM) 2018
„..reineres Licht über die Wissenschaften im Erzstifte zu Köln…“. Medizin, Gesundheitswesen und Aufklärung an der Maxischen Akademie in Bonn und der medizinisch-chirurgischen Josephsakademie in Wien
Creators: name: Horn, Sonia
name: Historical, Faculty Of
Publisher: name: Böhlau Verlag
Year: 2016

description: Kein Abstract verfügbar
title: Geschichte(n) von Gesundheit und Krankheit zwischen Kameralismus und medizinischer Polizey
title: Forschungsdesiderata für Österreich und Ungarn in der Frühen Neuzeit
titleType: Subtitle
Creators: name: Horn, Sonia
name: Historical, Faculty Of
Publisher: name: Europa Institut Budapest
Year: 2003

description: Kein Abstract verfügbar
Quantitative Theory of a Time-Correlation Function in a One-Component Glass-Forming Liquid with Anisotropic Potential
Creators: name: Lerner, Edan
name: Procaccia, Itamar
name: Regev, Ido
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The Shintani-Tanaka model is a glass-forming system whose constituents interact via anisotropic potential depending on the angle of a unit vector carried by each particle. The decay of time-correlation functions of the unit vectors exhibits the characteristics of generic relaxation functions during glass transitions. In particular it exhibits a 'stretched exponential' form, with the stretching index beta depending strongly on the temperature. We construct a quantitative theory of this correlation function by analyzing all the physical processes that contribute to it, separating a rotational from a translational decay channel. Interestingly, the separate decay function of each of these processes is temperature independent. Taken together with temperature-dependent weights determined a-priori by statistical mechanics one generates the observed correlation function in quantitative agreement with simulations at different temperatures. This underlines the danger of concluding anything about glassy relaxation functions without detailed physical scrutiny.
description: 4 pages, 5 figures
Improving government IT services security using leadership by example
Creators: name: Zainudin, Nurul Dyana
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Cybersecurity and privacy not elsewhere classified

description: Information security has become an important issue for countries in providing government services for citizens, due to the rapid growth of electric government (e-Government). Many security failures which have occurred are due to internal factors. Even though previous research has emphasised leadership, however, no studies have studied leaders’ capabilities and engagement as a factor in causing internal security failures. This thesis is concerned with issues relating to leadership skills in managing e-Government information security management. Therefore, the aim of the thesis is to invent a relevant key leadership by example concept to perform efficient top-down management that can be applied to e-Government information security management. The main objective of this research is to analyse security strategy in development and management within the Malaysian government and its impact on employees by referring to three different elements of values, observation and assumptions from Zakaria’s security culture (2007). In contradiction with previous research, findings from the case study demonstrate that inappropriate leadership skills, which are due to incompatibility in information security and disorganised security structures, create a lack of motivation in employee security practices. It appears that leadership skills are a root-cause factor in security incidents that occur by insiders. The main contribution is a model of key factors including the 3Ps of ‘People’, ‘Process’ and ‘Product’ as a guide to the concept of leadership by example in improving government IT services security. In conclusion, this research shows that to resolve the problem of security in e-Government, which is caused by internal factors, we need to further improve the quality of leadership skills. The model of key factors defines the quality of leadership skills in e-Government which, in turn, can help to reduce internal security failures.
title: The Contested Constitution of Work – Spatial Scales, Societal Spheres and Modes of Work
title: Current Research and Neglected Terrains
titleType: Subtitle
Creators: name:  Flecker, Jörg
name:  Pernicka, Susanne
name: Krings, Torben
name: Muckenhuber, Johanna
name: Nessel, Sebastian
name: Sardadvar, Karin
name: Schörpf, Philip
name: Simsa, Ruth
name: Verwiebe, Roland
name: Woydack, Johanna
name: Fibich, Theresa
name: Brugger, Florian
name: Glassner, Vera
name: Haidinger, Bettina
name: Haindorfer, Raimund
name: Holtgrewe, Ursula
name: Hürtgen, Stefanie
name: Kraemer, Klaus
Publisher: name: Pot, Mirjam (University of Vienna, Department of Sociology)
Year: 2017

description: Today’s pervasive transformations in work and employment relate to changing forms of employment and work organisation, to blurring boundaries between paid and unpaid and formal and informal work, and to the shifting of work between different spheres of society. Over the past years, a number of economic and social processes, such as economic liberalisation, financialisation, or digitalisation, accelerated these trends. This results in an increasing openness of how work and employment are being constituted with regard to the societal division of labour and the institutional forms and organisational principles of work. In this paper we call to rethink the conventional spatial and institutional ‘containers’ and we argue for a widened perspective on the current dynamics of labour thus contributing to further developing the theoretical tools for the analysis of working life.
description: Weitreichende Veränderungen können derzeit bei Arbeit und Beschäftigung beobachtet werden: Es entstehen neue Beschäftigungsformen, Grenzen zwischen bezahlter und unbezahlter und zwischen formeller und informeller Arbeit verschwimmen, die Arbeitsorganisation verändert sich und es kommt zu Verschiebungen von Arbeit zwischen kapitalistischen Unternehmen, dem Staat, dem Privathaushalt und der Zivilgesellschaft. Im Laufe der vergangenen Jahre haben sich diese Entwicklungen beschleunigt und sie können zu einem wesentlichen Teil auf den Ausbau von Liberalisierung, Transnationalisierung von Kapital und Arbeit, auf die Finanzialisierung, auf voranschreitende Digitalisierung und die Durchsetzung einer Dienstleistungsgesellschaft zurückgeführt werden. Eine Folge davon ist, dass die Gestaltung von Arbeit zunehmend offener wird, d.h. die gesellschaftliche Arbeitsteilung, die organisatorischen Prinzipien von Arbeit, aber auch die herkömmlichen räumlichen und institutionellen ‚Container‘ – wie etwa das Unternehmen, der Privathaushalt, der Staat, das nationale Beschäftigungssystem oder das Arbeitsverhältnis – werden in Frage gestellt. In diesem Artikel stellen wir eine erweiterte Sichtweise auf aktuelle Dynamiken der Arbeit dar.
Die Weihgaben des Kroisos für Amphiaraos: Herodot und BÉ 2015, n. 306
Creators: name: Tentori Montalto, Marco
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2019

description: Die Weihgaben des Kroisos für Amphiaraos: Herodot und BÉ 2015, n. 306
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 1 (2019): Sprachen – Schriftkulturen – Identitäten der Antike. Beiträge des XV. Internationalen Kongresses für Griechische und Lateinische Epigraphik, Wien, 28. August bis 1. September 2017: Einzelvorträge
Heterointerface control over lithium-induced phase transitions in MoS2 heterostructures
Creators: name: Pondick, Joshua V.
name: Kumar, Aakash
name: Wang, Mengjing
name: Yazdani, Sajad
name: Woods, John M.
name: Qiu, Diana Y.
name: Cha, Judy J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Phase transitions of two-dimensional materials and their heterostructures enable many applications including electrochemical energy storage, catalysis, and memory; however, the nucleation pathways by which these transitions proceed remain underexplored, prohibiting engineering control for these applications. Here, we demonstrate that the lithium intercalation-induced 2H-1T' phase transition in MoS2 proceeds via nucleation of the 1T' phase at a heterointerface by monitoring the phase transition of MoS2/graphene and MoS2/hexagonal boron nitride (hBN) heterostructures with Raman spectroscopy in situ during intercalation. We observe that graphene-MoS2 heterointerfaces require an increase of 0.8 V in applied electrochemical potential to nucleate the 1T' phase in MoS2 compared to hBN-MoS2 heterointerfaces. The increased nucleation barrier at graphene-MoS2 heterointerfaces is due to the reduced charge transfer from lithium to MoS2 at the heterointerface as lithium also dopes graphene based on ab initio calculations. Further, we show that the growth of the 1T' domain propagates along the heterointerface, rather than through the interior of MoS2. Our results provide the first experimental observations of the heterogeneous nucleation and growth of intercalation-induced phase transitions in two-dimensional materials and heterointerface effects on their phase transition.
description: 5 figures
Using Synchronization for Prediction of High-Dimensional Chaotic Dynamics
Creators: name: Cohen, Adam B.
name: Ravoori, Bhargava
name: Murphy, Thomas E.
name: Roy, Rajarshi
Publisher: name: arXiv
Year: 2008
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We experimentally observe the nonlinear dynamics of an optoelectronic time-delayed feedback loop designed for chaotic communication using commercial fiber optic links, and we simulate the system using delay differential equations. We show that synchronization of a numerical model to experimental measurements provides a new way to assimilate data and forecast the future of this time-delayed high-dimensional system. For this system, which has a feedback time delay of 22 ns, we show that one can predict the time series for up to several delay periods, when the dynamics is about 15 dimensional.
description: 10 pages, 4 figures
Donne in Transpadana ai tempi della romanizzazione tra conservatorismo e innovazione
Creators: name: Zoia, Serena
Publisher: name: Wiener Beiträge zur Alten Geschichte online (WBAGon)
Year: 2019

description: Donne in Transpadana ai tempi della romanizzazione tra conservatorismo e innovazione
description: Wiener Beiträge zur Alten Geschichte online (WBAGon), Bd. 1 (2019): Sprachen – Schriftkulturen – Identitäten der Antike. Beiträge des XV. Internationalen Kongresses für Griechische und Lateinische Epigraphik, Wien, 28. August bis 1. September 2017: Einzelvorträge
A matrix interpolation between classical and free max operations: I. The univariate case
Creators: name: Benaych-Georges, Florent
name: Cabanal-Duvillard, Thierry
Publisher: name: arXiv
Year: 2008
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 15A52, 46L54

description: Recently, Ben Arous and Voiculescu considered taking the maximum of two free random variables and brought to light a deep analogy with the operation of taking the maximum of two independent random variables. We present here a new insight on this analogy: its concrete realization based on random matrices giving an interpolation between classical and free settings.
description: 14 pages
Is Makassar a ‘Sanctuary City’? Migration Governance in Indonesia After the ‘Local Turn’
Creators: name: Missbach, Antje
name: Adiputera, Yunizar
name: Prabandari, Atin
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2018

description: Taking into consideration three levels of government (regional, national, and sub-national) that potentially offer protection to refugees, this paper is concerned with changes initiated by the 2016 Presidential Regulation on Handling Foreign Refugees. This regulation has delegated more responsibility for managing refugees to the sub-national levels of administration in Indonesia, which, like other nations in the Southeast Asia, has been reluctant to provide protection for refugees or any options for their integration into society. The reason for this is that, despite many vociferous demands in favor of a ‘regional solution’ in the aftermath of the 2015 Andaman Sea Crisis, most attempts ended up in abeyance. Following suit with the so-called ‘local turn’ in migration studies, which increased attention to the local dimensions of refugee protection due to the receding capacities in the major actors involved both in global refugee protection and international migration management, we direct attention to the sub-national level of refugee management in Indonesia using as a case study the city of Makassar, which has hitherto enjoyed a fairly positive reputation for welcoming refugees. By examining the current living conditions of asylum seekers and refugees in Makassar and comparing them to other places in Indonesia, we ask whether the concept of ‘sanctuary city’ is applicable to a non-Western context and, in doing so, hope to enhance current discussions of creating alternative models for refugee protection beyond the national and regional level.
description: Austrian Journal of South-East Asian Studies, Vol 11 No 2 (2018): Forced Migration
Επιθέσεις υπερχείλισης Buffer
Creators: name: Αρβανιτίδου, Μαρία Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2025
Subjects: Υπερχείλιση Buffer
Διάταξη μνήμης
Stack-based και heap-based υπερχείλιση
Στατική και Δυναμική ανάλυση
Buffer Overflow
Memory Layout
Stack-based and heap-based overflow
Static and Dynamic Analysis
Debugger, DEP, ASLR, Stack Canaries

description: Σκοπός της διατριβής ήταν η μελέτη των παγιωμένων εκφράσεων της νεοελληνικής γλώσσας. Εξετάσαμε την ορολογία που χρησιμοποιείται για τις παγιωμένες εκφράσεις και τους ορισμούς που έχουν προταθεί. Στη συνέχεια παρουσιάσαμε αναλυτικά τα χαρακτηριστικά των παγιωμένων εκφράσεων, καθώς και τους περιορισμούς που ισχύουν όσον αφορά το λεξιλόγιο, τη γραμματική και τη σύνταξή τους. Ακόμη αναφερθήκαμε αναλυτικά στα μοντέλα κατανόησης των παγιωμένων εκφράσεων που έχουν προταθεί και μας απασχόλησε η κατανόηση των παγιωμένων εκφράσεων από τα παιδιά καθώς και η διδασκαλία τους σε ξενόγλωσσους. Ένα άλλο θέμα που θίξαμε ήταν η συγγραφή λεξικών παγιωμένων εκφράσεων και παρουσιάσαμε ορισμένα που έχουν γραφεί για την ελληνική. Ασχοληθήκαμε επιπλέον με την ιστορική διάσταση των παγιωμένων εκφράσεων της νέας ελληνικής και διαπιστώσαμε την παρουσία τους από την αρχαιότητα μέχρι σήμερα.
description: The aim of the present thesis was the study of frozen expressions (idioms) in Modern Greek. We examined the proposed terminology and the definitions given for frozen expressions. Then we presented the features of frozen expressions and the restrictions on vocabulary, grammar, and syntax. Furthermore, we analyzed the models concerning the comprehension of frozen expressions and we examined children’s ability to produce and understand frozen expressions as well as ways of teaching them to foreign learners. We also examined the compilation of dictionaries of frozen expressions and we presented selected Greek dictionaries written in the last two decades. Another aim of this study was to examine the historical dimension of frozen expressions.
Real-world healthcare utilization and costs of peripheral nerve stimulation with a micro-IPG system
Creators: name: Kalia, Hemant
name: Thapa, Bishnu
name: Staats, Peter
name: Martin, Patrick
name: Stetter, Kori
name: Feldman, Becca
name: Marci, Carl
Publisher: name: Taylor & Francis
Year: 2025
Subjects: subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: To characterize real-world healthcare resource utilization (HCRU) and costs in adults with chronic pain of peripheral nerve origin treated with peripheral nerve stimulation (PNS) using the micro-implantable pulse generator (IPG). This retrospective observational study (9/1/19–1/31/23) linked patients from the Nalu medical database to the OM1 Real-World Data Cloud (RWDC). Eligible patients received the micro-IPG implant for PNS, were identifiable in both databases, and had ≥ 12 months of RWDC pre/post-implantation claims data. Primary outcomes were all-cause HRCU and medical costs (12 months pre- and post-implantation); secondary outcomes were all-cause pharmacy costs, including opioids, over the same time. Patients (N = 122) had a higher mean (standard deviation; SD) number of outpatient visits pre-implantation (5.7 [5.4]) than post-implantation (4.9 [5.7]). Mean (SD) total medical costs were 50% lower, from $27,493 ($44,756) to $13,717 ($23,278). Median (first-third quartile [Q1-Q3]) medical costs were 57% lower, from $11,809 ($4,075–$31,788) to $5,094 ($1,815-$13,820). Mean (SD) pharmacy costs (n = 77) were higher post-implantation ($22,470 [$77,203]) than pre-implantation ($20,092 [$64,132]), while median (Q1-Q3) costs were lower (from $2,708 [$222 -11,882] to $2,122 [$50–9,370]). Post-implantation, the proportion of patients using opioids was 31.4% lower. Patients with PNS using the micro-IPG had reduced HCRU, costs, and opioid use. TitleHealthcare Use and Costs with a Peripheral Nerve Stimulation Device for Chronic Pain Summary: This study reviewed the medical records of 122 adults who received peripheral nerve stimulation (PNS), a treatment for chronic pain, to understand how PNS affects patient healthcare use and costs. Healthcare use and costs in the year before PNS were compared with the year after. The results showed that PNS helped reduce the number of doctor’s visits and medical expenses. After starting PNS therapy, the average number of outpatient doctor’s visits was lowered from 5.7 to 4.9 per year, and total medical costs were cut in half, from $27,493 to $13,717. In addition, the number of patients using opioids went down by 31.4%.
Optimal Risk Sharing under Distorted Probabilities
Creators: name: Ludkovski, M.
name: Young, V. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: We study optimal risk sharing among $n$ agents endowed with distortion risk measures. Our model includes market frictions that can either represent linear transaction costs or risk premia charged by a clearing house for the agents. Risk sharing under third-party constraints is also considered. We obtain an explicit formula for Pareto optimal allocations. In particular, we find that a stop-loss or deductible risk sharing is optimal in the case of two agents and several common distortion functions. This extends recent result of Jouini et al. (2006) to the problem with unbounded risks and market frictions.
description: 22 pages and 3 figures
Women Remembering the Prophet’s Birthday: Maulid Celebrations and Religious Emotions Among the Alawiyin Community in Palembang, Indonesia
Creators: name: Seise, Claudia
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2018

description: In Palembang in South Sumatra, Indonesia, Maulid celebrations are considered an important religious event in the lives of many Muslims. Over the past twenty years, there has been an expansion of activities, the driving force behind which has been a young generation of Alawiyin in Palembang. Maulid celebrations organized by the Alawiyinin Palembang are separated along gender lines. In this paper, I show how female-onlyMaulid celebrations enable Muslim women, and especially the sharifat, to express their emotions and allow for bodily expressions during the actual Maulid event. I will argue that, in women-only celebrations, women express religious emotions which they wish to show but also which are expected from them as the expression of love for the Prophet Muhammad is part of the Islamic understanding internalized by the Alawiyin.
description: Austrian Journal of South-East Asian Studies, Vol 11 No 2 (2018): Forced Migration
Efimov Trimer Formation via Ultracold Four-body Recombination
Creators: name: Wang, Yujun
name: Esry, B. D.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We discuss the collisional formation of Efimov trimers via ultracold four-body recombination. In particular, we consider the reaction A+A+A+B->A3+B with A and B ultracold atoms. We obtain expressions for the four-body recombination rate and show that it reflects the three-body Efimov physics either as a function of collision energy or as a function of the two-body s-wave scattering length between A atoms. In addition, we briefly discuss issues important for experimentally observing this interesting and relatively unexplored process.
description: 5 pages, 3 figures
“From Frustration to Escalation in Marawi”: An Interview on Conflict Transformation in Southeast Asia With the Indonesian Peace and Conflict Advisor Shadia Marhaban
Creators: name: Stange, Gunnar
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2018

description: Shadia Marhaban has been actively involved in international peace mediation, capacity building, and human rights activism for more than 20 years. She is from Aceh, Indonesia, where she joined the Free Aceh Movement (GAM) in the early 2000s. She was an advisory member of GAM’s peace negotiating team during the 2005 Helsinki talks that brought an end to nearly 30 years of armed conflict. After her return to Aceh, she became a founding member of the Aceh Women’s League (LINA). The NGO was involved in reintegration programs for female ex-combatants and provided democracy education trainings. In recent years, her work has focused on facilitating dialog between conflicting parties in many regions of Southeast Asia affected by armed conflict. In her work, she is mainly engaged with resistance and liberation movements and their political transition. She believes that considering the dimensions of identity, religion, and culture is key to successful war-to-peace transitions and the achievement of sustainable modes of conflict resolution. With a background in political science and international relations, she is a fellow at the Weatherhead Center for International Affairs, of Harvard University and has been teaching classes on mediation and conflict transformation at universities in Austria, Indonesia, and the US. In this interview, conducted by Gunnar Stange in Vienna in June 2018, Shadia Marhaban speaks about her peace-building work all over Southeast Asia and her experiences in violence prevention in the city of Marawi, Mindanao, Philippines.
description: Austrian Journal of South-East Asian Studies, Vol 11 No 2 (2018): Forced Migration
Book Review: Werning, R. & Schwieger, J. (2019). Handbuch Philippinen. Gesellschaft-Politik-Wirtschaft-Kultur
Creators: name: Chan, Ralph
name: Makalintal, Joshua
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2019

description: -
description: Austrian Journal of South-East Asian Studies, Vol 12 No 1 (2019)
A young, dusty, compact radio source within a Ly|*alpha*| halo
Creators: name: Barrio, F. Eugenio
name: Jarvis, Matt J.
name: Rawlings, Steve
name: Bauer, Amanda
name: Croft, Steve
name: Hill, Gary J.
name: Manchado, Arturo
name: McLure, Ross J.
name: Smith, Daniel J. B.
name: Targett, Thomas A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report here on the discovery of a red quasar, J004929.4+351025.7 at a redshift of z = 2.48, situated within a large Lya emission-line halo. The radio spectral energy distribution implies that the radio jets were triggered < 10^4 years prior to the time at which the object is observed, suggesting that the jet triggering of the active galactic nucleus is recent. The loosely biconical structure of the emission-line halo suggests that it is ionised by photons emitted by the central quasar nucleus and that the central nucleus is obscured by a dusty torus with Av ~ 3.0. The large spatial extent of the Lya halo relative to the radio emission means this could only have occurred if the radio jets emerged from an already established highly-accreting black hole. This suggests that the radio-jet triggering is delayed with respect to the onset of accretion activity on to the central supermassive black hole.
description: 9 pages, 5 figures; accepted for publication in MNRAS
Gender, Ethnicity, and Environmental Transformations in Indonesia and Beyond
Creators: name: Großmann, Kristina
name: Padmanabhan, Martina
name: Afiff, Suraya
Publisher: name: Austrian Journal of South-East Asian Studies
Year: 2017

description: -
description: Austrian Journal of South-East Asian Studies, Vol 10 No 1 (2017): Gender, Ethnicity, and Environmental Transformations
title: Political Islam and grassroots activism in Turkey : a study of the pro-Islamist Virtue Party's grassroots activists and their affects on the electoral outcomes
Creators: name: Delibas, Kayhan
Publisher: name: University of Kent
Year: 2022

description: This thesis presents an analysis of the spectacular rise of political Islam in Turkey. It has two aims: first to understand the underlying causes of the rise of the Welfare Party which -later became the Virtue Party- throughout the 1990s, and second to analyse how grassroots activism influenced this process. The thesis reviews the previous literature on the Islamic fundamentalist movements, political parties, political party systems and concentrates on the local party organisations and their effects on the party's electoral performance. It questions the categorisation of Islamic fundamentalism as an appropriate label for this movement. An exploration of such movements is particularly important in light of the event of 11`x' September. After exploring existing theoretical and case studies into political Islam and party activism, I present my qualitative case study. I have used ethnographic methodology and done participatory observations among grassroots activists in Ankara's two sub-districts covering 105 neighbourhoods. I examined the Turkish party system and the reasons for its collapse. It was observed that as a result of party fragmentation, electoral volatility and organisational decline and decline in the party identification among the citizens the Turkish party system has declined. However, the WP/VP profited from this trend enormously and emerged as the main beneficiary of this process. Empirical data is analysed in four chapters, dealing with the different aspects of the Virtue Party's local organisations and grassroots activists. They deal with change and continuity in the party, the patterns of participation, the routes and motives for becoming a party activist, the profile of party activists and the local party organisations. I explore what they do and how they do it. The analysis reveals that the categorisation of Islamic fundamentalism is misplaced and the rise of political Islam in Turkey cannot be explained as religious revivalism or the rise of Islamic fundamentalism. It is a political force that drives its strength from the urban poor which has been harshly affected by the IMF directed neoliberal economy policies. In conclusion, it is shown that the WP/VP's electoral chances were significantly improved by its very efficient and effective party organisations and highly committed grassroots activists.
Coordination of operational planning and real-time optimization in microgrids
Creators: name: Dumas, Jonathan
name: Dakir, Selmane
name: Liu, Clément
name: Cornélusse, Bertrand
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Hierarchical microgrid control levels range from distributed device level controllers that run at a high frequency to centralized controllers optimizing market integration that run much less frequently. Centralized controllers are often subdivided into operational planning controllers that optimize decisions over a time horizon of one or several days, and real-time optimization controllers that deal with actions in the current market period. The coordination of these levels is of paramount importance. In this paper, we propose a value function-based approach as a way to propagate information from operational planning to real-time optimization. We apply this method to an environment where operational planning, using day-ahead forecasts, optimizes at a market period resolution the decisions to minimize the total energy cost and revenues, the peak consumption and injection-related costs, and plans for reserve requirements. While real-time optimization copes with the forecast errors and yields implementable actions based on real-time measurements. The approach is compared to a rule-based controller on three use cases, and its sensitivity to forecast error is assessed.
Understanding the flat band in 1T-TaS2 using a rotated basis
Creators: name: Cheng, Li
name: Long, Xuanyu
name: Chen, Xiaobin
name: Zou, Xiaolong
name: Liu, Zheng
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electronic flat bands serve as a unique platform to achieve strongly-correlated phases. The emergence of a flat band around the Fermi level in 1T-TaS$_2$ in accompany with the development of a $\sqrt{13}\times\sqrt{13}$ charge density wave (CDW) superlattice has long been noticed experimentally, but a transparent theoretical understanding remains elusive. We show that without CDW, the primary feature of the $1\times1$ bands can be fitted by a simple trigonometric function, and physically understood by choosing a rotated $\tilde{t}_{2g}$ basis with the principle axes aligning to the tilted TaS$_6$ octahedron. Using this basis, we trace the band evolution in the $\sqrt{13}\times\sqrt{13}$ superlattice by progressively including different CDW effects. We point out that CDW strongly rehybridizes the three $\tilde{t}_{2g}$ orbitals, which leads to the formation of a well-localized molecular orbital and spawns the flat band.