cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Divergent thinking and post-launch entrepreneurial outcomes
title: non-linearities and the moderating role of experience
titleType: Subtitle
Creators: name: Caliendo, Marco
name: Rodríguez Guio, Daniel Felipe
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 330 Wirtschaft

description: Divergent thinking is the ability to produce numerous and diverse responses to questions or tasks, and it is used as a predictor of creative achievement. It plays a significant role in the business organization’s innovation process and the recognition of new business opportunities. Drawing upon the cumulative process model of creativity in entrepreneurship, we hypothesize that divergent thinking has a lasting effect on post-launch entrepreneurial outcomes related to innovation and growth, but that this relation might not always be linear. Additionally, we hypothesize that domain-specific experience has a moderating role in this relation. We test our hypotheses based on a representative longitudinal sample of 457 German business founders, which we observe up until 40 months after start-up. We find strong relative effects for innovation and growth outcomes. For survival we find conclusive evidence for non-linearities in the effects of divergent thinking. Additionally, we show that such effects are moderated by the type of domain-specific experience that entrepreneurs gathered pre-launch, as it shapes the individual’s ideational abilities to fit into more sophisticated strategies regarding entrepreneurial creative achievement. Our findings have relevant policy implications in characterizing and identifying business start-ups with growth and innovation potential, allowing a more efficient allocation of public and private funds.
description: CEPA Discussion Papers; 68
Direct identification of dilute surface spins on Al$_2$O$_3$: Origin of flux noise in quantum circuits
Creators: name: de Graaf, S. E.
name: Adamyan, A. A.
name: Lindström, T.
name: Erts, D.
name: Kubatkin, S. E.
name: Tzalenchuk, A. Ya.
name: Danilov, A. V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is universally accepted that noise and decoherence affecting the performance of superconducting quantum circuits are consistent with the presence of spurious two-level systems (TLS). In recent years bulk defects have been generally ruled out as the dominant source, and the search has focused on surfaces and interfaces. Despite a wide range of theoretical models and experimental efforts, the origin of these surface TLS still remains largely unknown, making further mitigation of TLS induced decoherence extremely challenging. Here we use a recently developed on-chip electron spin resonance (ESR) technique that allows us to detect spins with a very low surface coverage. We combine this technique with various surface treatments specifically to reveal the nature of native surface spins on Al$_2$O$_3$ -- the mainstay of almost all solid state quantum devices. On a large number of samples we resolve three ESR peaks with the measured total paramagnetic spin density $n=2.2\times 10^{17}$m$^{-2}$, which matches the density inferred from the flux noise in SQUIDs. We show that two of these peaks originate from physisorbed atomic hydrogen which appears on the surface as a by-product of water dissociation. We suggest that the third peak is due to molecular oxygen on the Al$_2$O$_3$ surface captured at strong Lewis base defect sites, producing charged O$_2^-$. These results provide important information towards the origin of charge and flux noise in quantum circuits. Our findings open up a whole new approach to identification and controlled reduction of paramagnetic sources of noise in solid state quantum devices.
description: 6 pages, 2 figures (supplementary material 6 pages, 6 figures)
Parametrization of pair correlation function and static structure factor of the one component plasma across coupling regimes
Creators: name: Desbiens, Nicolas
name: Arnault, Philippe
name: Clérouin, Jean
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We present a parametrization of the pair correlation function and the static structure factor of the Coulomb one component plasma (OCP) from the weakly coupled regime to the strongly coupled regime. Recent experiments strongly suggest that the OCP model can play the role of a reference system for warm dense matter. It can provide the ionic static structure factor that is necessary to interpret the x-ray Thomson scattering measurements, for instance. We illustrate this with the interpretation of a x-ray diffraction spectrum recently measured, using a Bayesian method that requires many evaluations of the static structure factor to automatically calibrate the parameters. For strongly coupled dusty plasmas, the proposed parametrization of the Coulomb OCP pair correlation function can be related to the Yukawa one, including screening. Further prospects to parametrize the static structure of Yukawa systems are also discussed.
description: 8 pages, 9 figures
Teichmüller space of negatively curved metrics on Complex Hyperbolic Manifolds is not contractible
Creators: name: Farrell, F. T.
name: Sorcar, G.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: In this paper we prove that for all $n=4k-2$, $k\ge2$ there exists a closed smooth complex hyperbolic manifold $M$ with real dimension $n$ having non-trivial $π_1(\mathcal{T}^{<0}(M))$. $\mathcal{T}^{<0}(M)$ denotes the Teichmüller space of all negatively curved Riemannian metrics on $M$, which is the topological quotient of the space of all negatively curved metrics modulo the space of self-diffeomorphisms of $M$ that are homotopic to the identity.
description: This paper has been accepted for publication in the Science China journal. arXiv admin note: substantial text overlap with arXiv:1311.5658
Improvements to some econometric methods based on modern computer power
Creators: name: Lu, Zeng-Hua
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Photometric and H-alpha studies of two extreme mass-ratio short period contact binaries in the direction of open cluster Praesepe
Creators: name: Rukmini, J.
name: Priya, D. Shanti
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the high precession photometric studies in V band and spectroscopic studies centered around H-alpha line for two extreme mass-ratio short period contact binaries ASAS J082243+1927.0 (V1) and ASAS J085710+1856.8 (V2). The variables in study are in the direction of open cluster Praesepe. From the light curve analysis V1 was found to be a low mass-ratio over-contact binary of A-type, with a mass ratio q 0.121 and fill-out factor f 72%, and V2 was found to be a low mass contact binary of W-type, with a mass-ratio q 1.29 and fill-out factor f 11% (marginal contact). The study of H-alpha absorption line profile of both the variables shows variation in equivalent widths (EWs) with orbital phases. The mean EWs of the H-alpha line were obtained as 1.6+or-0.13 A and 1.18+or-0.12 A for V1 and V2 respectively. The variation of H-alpha absorption with respect to phase is explained to be due to chromospheric activity in V1, as evident from the O Connell effect and that due to chromospheric flares, winds or photospheric source in V2. The parameters for both the binaries are also studied with respect to the large sample of well-studied contact binaries and possible mechanisms for merger in contact binaries of both low and high mass ratios emphasized.
description: 12 pages, 5 figures, 2 tables
Wege aus der Einsamkeit: Wie Soziokulturelle Animator*innen einsamkeitsbetroffene Menschen unterstützen können
Creators: name: Arnold, Felizitas
Publisher: name: Zenodo
Year: 2023

description: In der vorliegenden Fachliteraturarbeit mit dem Titel Wege aus der Einsamkeit - Wie Soziokulturelle Animator*innen einsamkeitsbetroffene Menschen unterstützen können befasst sich die Autorin Felizitas Arnold mit dem vielschichtigen Phänomen Einsamkeit und ergründet, ob die Soziokulturelle Animation in diesem Kontext eine Rolle spielt, respektive wie Soziokulturelle Animator*innen einen Beitrag leisten können gegen Einsamkeit. Die Ergebnisse dieser Arbeit fussen auf der Analyse zahlreicher Studien aus verschiedenen wissenschaftlichen Disziplinen. In dieser Arbeit wird das Phänomen Einsamkeit aus verschiedenen Perspektiven beschrieben, Ursachen und Folgen von Einsamkeitserfahrungen erklärt und mögliche Ansätze gegen Einsamkeit und Beiträge durch die Soziokulturelle Animation diskutiert. Es wurde ersichtlich, dass Einsamkeit ein komplexes und vielschichtiges Phänomen ist und es unterschiedliche Ansätze auf verschiedenen Ebenen gibt, um negativen Einsamkeitserfahrungen entgegenzuwirken. Die Autorin kommt zum Schluss, dass die Soziokulturelle Animation mit ihren spezifischen Arbeitsprinzipien und wertebasierten Orientierungshilfen eine zentrale Rolle spielen kann, um negative Einsamkeitserfahrungen präventiv anzugehen und einsamkeitsbetroffene Menschen durch soziokulturelle Interventionen nachhaltig zu unterstützen. Zum Schluss der vorliegenden Arbeit werden zentrale Handlungsempfehlungen formuliert, welche Berufsleute der Soziokulturellen Animation Orientierung bieten sollen im Umgang mit Einsamkeit.
description: + Code Diss LU: hslusa bask be + Fussnote: Bachelor-Arbeit, Hochschule Luzern – Soziale Arbeit, Studienrichtung Soziokultur, 2023 + NL-Code: NLLUHSA202309
Very Low-Mass Stellar and Substellar Companions to Solar-like Stars From MARVELS VI: A Giant Planet and a Brown Dwarf Candidate in a Close Binary System HD 87646
Creators: name: Ma, Bo
name: Ge, Jian
name: Wolszczan, Alex
name: Muterspaugh, Matthew W.
name: Lee, Brian
name: Henry, Gregory W.
name: Schneider, Donald P.
name: Martin, Eduardo L.
name: Niedzielski, Andrzej
name: Xie, Jiwei
name: Fleming, Scott W.
name: Thomas, Neil
name: Williamson, Michael
name: Zhu, Zhaohuan
name: Agol, Eric
name: Bizyaev, Dmitry
name: da Costa, Luiz Nicolaci
name: Jiang, Peng
name: Fiorenzano, A. F. Martinez
name: Hernandez, Jonay I. Gonzalez
name: Guo, Pengcheng
name: Grieves, Nolan
name: Li, Rui
name: Liu, Jane
name: Mahadevan, Suvrath
name: Mazeh, Tsevi
name: Nguyen, Duy Cuong
name: Paegert, Martin
name: Sithajan, Sirinrat
name: Stassun, Keivan
name: Thirupathi, Sivarani
name: van Eyken, Julian C.
name: Wan, Xiaoke
name: Wang, Ji
name: Wisniewski, John P.
name: Zhao, Bo
name: Zucker, Shay
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the detections of a giant planet (MARVELS-7b) and a brown dwarf candidate (MARVELS-7c) around the primary star in the close binary system, HD 87646. It is the first close binary system with more than one substellar circum-primary companion discovered to the best of our knowledge. The detection of this giant planet was accomplished using the first multi-object Doppler instrument (KeckET) at the Sloan Digital Sky Survey (SDSS) telescope. Subsequent radial velocity observations using ET at Kitt Peak National Observatory, HRS at HET, the "Classic" spectrograph at the Automatic Spectroscopic Telescope at Fairborn Observatory, and MARVELS from SDSS-III confirmed this giant planet discovery and revealed the existence of a long-period brown dwarf in this binary. HD 87646 is a close binary with a separation of $\sim22$ AU between the two stars, estimated using the Hipparcos catalogue and our newly acquired AO image from PALAO on the 200-inch Hale Telescope at Palomar. The primary star in the binary, HD 87646A, has Teff = 5770$\pm$80K, log(g)=4.1$\pm$0.1 and [Fe/H] = $-0.17\pm0.08$. The derived minimum masses of the two substellar companions of HD 87646A are 12.4$\pm$0.7M$_{\rm Jup}$ and 57.0$\pm3.7$M$_{\rm Jup}$. The periods are 13.481$\pm$0.001 days and 674$\pm$4 days and the measured eccentricities are 0.05$\pm$0.02 and 0.50$\pm$0.02 respectively. Our dynamical simulations show the system is stable if the binary orbit has a large semi-major axis and a low eccentricity, which can be verified with future astrometry observations.
description: Accepted for publication at AJ. RV data are provided as ascii file in the source files
Diamond Open Access journals: A french perspective
Creators: name: Lutz, Jean-François
name: Mounier, Pierre
Publisher: name: Zenodo
Year: 2023
Subjects: open access
diamond OA
France
scholarly communication
infrastructures

description: This presentation draws a map of the players involved in the publication of diamond open access journals in France and their strategy in relation to current international initiatives. It highlights the diversity of initiatives underway and the gradual structuring of communities involved in open access research communication (across all disciplines, including the humanities and social sciences) in France around Diamond infrastructures.
Single mode waveguide platform for spontaneous and surface-enhanced on-chip Raman spectroscopy
Creators: name: Dhakal, Ashim
name: Peyskens, Frédéric
name: Clemmen, Stéphane
name: Raza, Ali
name: Wuytens, Pieter
name: Zhao, Haolan
name: Thomas, Nicolas Le
name: Baets, Roel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We review an on-chip approach for spontaneous Raman spectroscopy and Surface Enhanced Raman Spectroscopy (SERS) based on evanescent excitation of the analyte as well as evanescent collection of the Raman signal using Complementary Metal Oxide Semiconductor (CMOS) compatible single mode waveguides. The signal is either directly collected from the analyte molecules or via plasmonic nanoantennas integrated on top of the waveguides. Flexibility in the design of the geometry of the waveguide, and/or the geometry of the antennas, enables optimization of the collection efficiency. Furthermore the sensor can be integrated with additional functionality (sources, detectors, spectrometers) on the same chip. In this paper, the basic theoretical concepts are introduced to identify the key design parameters and some proof-of-concept experimental results are reviewed.
PARSEC : Desenvolvimento de novas ferramentas para o compartilhamento e reuso de dados através de pesquisa transnacional sobre o impacto socioeconômico das unidades de conservação
Creators: name: Stall, Shelley
name: Mouquet, Nicholas
name: Mouillot, David
name: Specht, Alison
name: Corrêa, Pedro
name: Murayama, Yasuhiro
Publisher: name: Zenodo
Year: 2019
Subjects: synthesis science
data science
protected areas
socio-economic outcomes
artificial intelligence
data management
transnational

description: Project overview of the PARSEC project.
description: This project is funded through the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI) for the Enhancement of transnational, interdisciplinary, and transdisciplinary data use in environmental change research.
High order asymptotics in econometrics
Creators: name: Lieberman, Offer
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Normal State of the Metallic Hydrogen Sulfide
Creators: name: Kudryashov, Nikolay A.
name: Kutukov, Alexander A.
name: Mazur, Evgeny A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Generalized theory of the normal properties of the metal in the case of the electron-phonon (EP) systems with not constant density of electronic states is used to examine the normal state of the SH3 and SH2 phase of the hydrogen sulfide at different pressures. The frequency dependence of the real and imaginary part of the self-energy part (SP) of the electron Green's function, the real and imaginary part of the complex renormalization of the electron mass, the real and imaginary part of the complex renormalization of the chemical potential, as well as the renormalized with the strong electron-phonon interaction the electron density of states are calculated. The calculations are performed for the stable orthorhombic IM-3M hydrogen sulfide SH3 structure at three pressures P = 170 GPa, P = 180 GPa, P = 225 GPa and SH2 structure with the symmetry I4/MMM (D4H-17) for the three values of pressure P = 150 GPa , P = 180 GPa, P = 225 GPa at the temperature of T = 200K. Key words: hydrogen sulfide, electron-phonon system, the pressure, the electronic properties.
description: 19 pages, 11 figures
Approach of complexity in nature: Entropic nonuniqueness
Creators: name: Tsallis, Constantino
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Boltzmann introduced in the 1870's a logarithmic measure for the connection between the thermodynamical entropy and the probabilities of the microscopic configurations of the system. His entropic functional for classical systems was extended by Gibbs to the entire phase space of a many-body system, and by von Neumann in order to cover quantum systems as well. Finally, it was used by Shannon within the theory of information. The simplest expression of this functional corresponds to a discrete set of $W$ microscopic possibilities, and is given by $S_{BG}= -k\sum_{i=1}^W p_i \ln p_i$ ($k$ is a positive universal constant; {\it BG} stands for {\it Boltzmann-Gibbs}). This relation enables the construction of BG statistical mechanics. The BG theory has provided uncountable important applications. Its application in physical systems is legitimate whenever the hypothesis of {\it ergodicity} is satisfied. However, {\it what can we do when ergodicity and similar simple hypotheses are violated?}, which indeed happens in very many natural, artificial and social complex systems. It was advanced in 1988 the possibility of generalizing BG statistical mechanics through a family of nonadditive entropies, namely $S_q=k\frac{1-\sum_{i=1}^W p_i^q}{q-1}$, which recovers the additive $S_{BG}$ entropy in the $q \to1$ limit. The index $q$ is to be determined from mechanical first principles. Along three decades, this idea intensively evolved world-wide (see Bibliography in \url{http://tsallis.cat.cbpf.br/biblio.htm}), and led to a plethora of predictions, verifications, and applications in physical systems and elsewhere. As expected whenever a {\it paradigm shift} is explored, some controversy naturally emerged as well in the community. The present status of the general picture is here described, starting from its dynamical and thermodynamical foundations, and ending with its most recent physical applications.
description: 15 pages including 3 figures. To appear in Axioms. Guest Editor: Prof. Dr. Hans J. Haubold. The present invited overview belongs to the Special Issue "Special Functions: Fractional Calculus and the Pathway for Entropy Dedicated to Professor Dr. Arak M. Mathai at the occasion of his 80th Birthday"
A parallel pattern for iterative stencil + reduce
Creators: name: Aldinucci, M.
name: Danelutto, M.
name: Drocco, M.
name: Kilpatrick, P.
name: Misale, C.
name: Pezzi, G. Peretti
name: Torquati, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: We advocate the Loop-of-stencil-reduce pattern as a means of simplifying the implementation of data-parallel programs on heterogeneous multi-core platforms. Loop-of-stencil-reduce is general enough to subsume map, reduce, map-reduce, stencil, stencil-reduce, and, crucially, their usage in a loop in both data-parallel and streaming applications, or a combination of both. The pattern makes it possible to deploy a single stencil computation kernel on different GPUs. We discuss the implementation of Loop-of-stencil-reduce in FastFlow, a framework for the implementation of applications based on the parallel patterns. Experiments are presented to illustrate the use of Loop-of-stencil-reduce in developing data-parallel kernels running on heterogeneous systems.
PARSEC : Building New Tools for Data Sharing and Reuse through a Transnational Investigation of the Socioeconomic Impacts of Protected Areas
Creators: name: Specht, Alison
name: Stall, Shelley
name: Mouquet, Nicholas
name: Mouillot, David
name: Corrêa, Pedro
name: Murayama, Yasuhiro
Publisher: name: Zenodo
Year: 2019
Subjects: synthesis science
data science
socio-economic outcomes
protected areas
data management
transnational

description: Project overview of the PARSEC project, funded by the Belmont Forum.
description: This project is funded through the Belmont Forum as part of its Collaborative Research Action (CRA) on Science-Driven e-Infrastructures Innovation (SEI) for the Enhancement of transnational, interdisciplinary, and transdisciplinary data use in environmental change research.
[Rezension zu:] Mane Hering-Mitgau, Farbige Fassaden. Die historische Putzfassung, Steinfarbigkeit und Architekturbemalung in der Schweiz, hrsg. vom Institut für Denkmalpflege und Bauforschung an der ETH Zürich, Frauenfeld/Stuttgart/Wien 2010
Creators: name: Hesse, Jochen
Publisher: name: Verlag Karl Schwegler AG
Year: 2013
Subjects: subject: 700 Künste, Bildende und angewandte Kunst
subject: Rezension
subject: Fassadenmalerei
subject: Farbe
subject: Denkmalpflege
subject: Kunst
subject: Malerei
subject: Architektur

description: In: Zeitschrift für Schweizerische Archäologie und Kunstgeschichte ZAK 70:1 (2013), S. 77-79
Testing for first order autoregressive disturbances in the dynamic linear regression model
Creators: name: Inder, Brett Andrew
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Probing Ionospheric Structures using the LOFAR radio telescope
Creators: name: Mevius, M.
name: van der Tol, S.
name: Pandey, V. N.
name: Vedantham, H. K.
name: Brentjens, M. A.
name: de Bruyn, A. G.
name: Abdalla, F. B.
name: Asad, K. M. B.
name: Bregman, J. D.
name: Brouw, W. N.
name: Bus, S.
name: Chapman, E.
name: Ciardi, B.
name: Fernandez, E. R.
name: Ghosh, A.
name: Harker, G.
name: Iliev, I. T.
name: Jelić, V.
name: Kazemi, S.
name: Koopmans, L. V. E.
name: Noordam, J. E.
name: Offringa, A. R.
name: Patil, A. H.
name: van Weeren, R. J.
name: Wijnholds, S.
name: Yatawatta, S.
name: Zaroubi, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: LOFAR is the LOw Frequency Radio interferometer ARray located at mid-latitude ($52^{\circ} 53'N$). Here, we present results on ionospheric structures derived from 29 LOFAR nighttime observations during the winters of 2012/2013 and 2013/2014. We show that LOFAR is able to determine differential ionospheric TEC values with an accuracy better than 1 mTECU over distances ranging between 1 and 100 km. For all observations the power law behavior of the phase structure function is confirmed over a long range of baseline lengths, between $1$ and $80$ km, with a slope that is in general larger than the $5/3$ expected for pure Kolmogorov turbulence. The measured average slope is $1.89$ with a one standard deviation spread of $0.1$. The diffractive scale, i.e. the length scale where the phase variance is $1\, \mathrm{rad^2}$, is shown to be an easily obtained single number that represents the ionospheric quality of a radio interferometric observation. A small diffractive scale is equivalent to high phase variability over the field of view as well as a short time coherence of the signal, which limits calibration and imaging quality. For the studied observations the diffractive scales at $150$ MHz vary between $3.5$ and $30\,$ km. A diffractive scale above $5$ km, pertinent to about $90 \%$ of the observations, is considered sufficient for the high dynamic range imaging needed for the LOFAR Epoch of Reionization project. For most nights the ionospheric irregularities were anisotropic, with the structures being aligned with the Earth magnetic field in about $60\%$ of the observations.
description: accepted for publication in Radio Science
Regenerative Soot-IV: The state of the carbon vapour in the regenerative sooting discharge
Creators: name: Ahmad, Shoaib
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Formation of the regenerative soot is the process of recycling and introduction of the cathode deposited carbon clusters into the discharge. The agglomerates of carbon clusters on the cathode release their constituents into the plasma that goes from the pure sputtering mode to the sooting one. The process of the regeneration of the soot that emits large carbon clusters is discussed by evaluating the state of the carbon vapour by using the characteristic line emissions from the discharge.
description: 11 pages, 4 figures, 2 tables
Message-passing algorithms for synchronization problems over compact groups
Creators: name: Perry, Amelia
name: Wein, Alexander S.
name: Bandeira, Afonso S.
name: Moitra, Ankur
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Data Structures and Algorithms (cs.DS)
subject: Optimization and Control (math.OC)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Various alignment problems arising in cryo-electron microscopy, community detection, time synchronization, computer vision, and other fields fall into a common framework of synchronization problems over compact groups such as Z/L, U(1), or SO(3). The goal of such problems is to estimate an unknown vector of group elements given noisy relative observations. We present an efficient iterative algorithm to solve a large class of these problems, allowing for any compact group, with measurements on multiple 'frequency channels' (Fourier modes, or more generally, irreducible representations of the group). Our algorithm is a highly efficient iterative method following the blueprint of approximate message passing (AMP), which has recently arisen as a central technique for inference problems such as structured low-rank estimation and compressed sensing. We augment the standard ideas of AMP with ideas from representation theory so that the algorithm can work with distributions over compact groups. Using standard but non-rigorous methods from statistical physics we analyze the behavior of our algorithm on a Gaussian noise model, identifying phases where the problem is easy, (computationally) hard, and (statistically) impossible. In particular, such evidence predicts that our algorithm is information-theoretically optimal in many cases, and that the remaining cases show evidence of statistical-to-computational gaps.
description: 35 pages, 11 figures
Neues Dataverse-Repositorium. Pressemitteilung.
Creators: name: Strauch, Annette
Publisher: name: Zenodo
Year: 2020
Subjects: Dataverse
Forschungsdatenmanagement

description: // Neues Dataverse-Repositorium: //
 Die langfristige Archivierung von Forschungsdaten ist Voraussetzung für
 die Nachvollziehbarkeit und Überprüfbarkeit wissenschaftlicher
 Ergebnisse, die auf der Auswertung dieser Daten beruhen.
 Forschungsdaten werden als eigenständige wissenschaftliche
 Leistungen sichtbar und gewürdigt.
Privatisation : a meta-analytic review of performance
Creators: name: Hodge, Graeme
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
Supplementary files for the Dueling Loops simulation model and the Truth Literacy Training study.
Creators: name: Harich, Jack
name: Koloffon Rosas, Montserrat
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 440899
subject: Political science not elsewhere classified

description: The paper used a simulation model for analysis and a spreadsheet for study data. Here is what the files contain:DuelingLoops_Dem.mdl - The system dynamics model. We used Vensim.StudyResultsData.xlsx - Contains the raw data and statistical analysis for the Truth Literacy Training study.
A Comparative Analysis of Thermal Flow Sensing in Biomedical Applications
Creators: name: Khan, Baseerat
name: Ahmed, Suhaib
name: Kakkar, Vipan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Biological Physics (physics.bio-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Flow sensors have diverse applications in the field of biomedical engineering and also in industries. Micromachining of flow sensors has accomplished a new goal when it comes to miniaturization. Due to the scaling in dimensions, power consumption, mass cost, sensitivity and integration with other modules such as wireless telemetry has improvised to a great extent. Thermal flow sensors find wide applications in biomedical such as in hydrocephalus shunts and drug delivery systems. Infrared thermal sensing is used for preclinical diagnosis of breast cancer, for identifying various neurological disorders and for monitoring various muscular movements. In this paper, various modes of thermal flow sensing and transduction methods with respect to different biomedical applications are discussed. Thermal flow sensing is given prime focus because of the simplicity in the design. Finally, a comparison of flow sensing technologies is also presented.
description: 7 pages, 5 figures, 1 table, International Journal of Biomedical Engineering and Science, vol. 3, no. 3, 2016
A Comparative Study on the Interpretation Procedure of Field Tests for Measuring the Dynamic Impedance of a Surface Footing
Creators: name: de Silva, F.
name: Amendola, C.
name: Pitilakis, D.
name: Silvestri, F.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Space Science
classificationCode: 29999
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 19999
subject: Mathematical Sciences not elsewhere classified

description: The paper analyses in detail and compares different interpretation procedures of snap-back and forced-vibration tests on a full-scale prototype founded on soft-soil, in order to assess their effectiveness for measuring the stiffness and damping of a shallow foundation under dynamic loads. Both properties were back-calculated through three alternative methods, i.e. through impedance functions computed in the frequency domain, or by interpreting force-displacement loops in terms of peak-to-peak amplitudes or of phase-shift. The damping was further calculated from the logarithmic decrement of free-vibration records. The resulting foundation stiffness and damping were observed to vary with the number of cycles and with the load frequency and amplitude. The comparison among the interpretation techniques revealed that the peak-to-peak approach fails when damping is high, because it neglects the delay between force and displacement.
Dynamics of water and solute transport in polymeric reverse osmosis membranes via molecular dynamics simulations
Creators: name: Shen, Meng
name: Keten, Sinan
name: Lueptow, Richard M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The Angstrom-scale transport characteristics of water and six different solutes, methanol, ethanol, 2-propanol, urea, Na+, and Cl-, were studied for a polyamide reverse osmosis (RO) membrane, FT-30, using non-equilibrium molecular dynamics (NEMD) simulations. Results indicate that water transport increases with an increasing fraction of connected percolated free volume, or water-accessible open space, in the membrane polymer structure. This free volume is enhanced by the dynamic structure of the membrane at the molecular level as it swells when hydrated and vibrates due to molecular collisions allowing a continuous path connecting the opposite membrane surfaces. The tortuous paths available for transport of solutes result in Brownian motion of solute molecules and hopping from pore to pore as they pass through the polymer network structure of the membrane. The transport of alcohol solutes decreases for solutes with larger Van der Waals volume, which corresponds to less available percolated free volume, or solute-accessible space, within the membrane polymer structure. However, the Van der Waals size of the dehydrated solutes is generally not a good measure to predict solute transport or rejection. Urea has reduced transport compared to ethanol, most likely due to more complex chemistry, even though urea has a smaller Van der Waals volume than ethanol. Na+ and Cl- experience the lowest transport, likely due to strong ion-water and ion-ion electrostatic interactions.
Das Potential von Restorative Justice bei sexualisierter Gewalt im Erwachsenenbereich: Eine empirische Untersuchung bei Opferberatungsstellen in der Deutschschweiz
Creators: name: Baumann Petra
name: Kampouri, Anna
Publisher: name: Zenodo
Year: 2023

description: Sexualisierte Gewalt ist ein komplexes Phänomen. Ihr Charakter ist intim und sie belastet Opfer schwer. Straftaten sind schwierig zu beweisen, viele Opfer erstatten keine Strafanzeige. Opferberatungsstellen bieten eine Palette an Leistungen an, dabei stehen die individuellen Bedürfnisse der Opfer im Zentrum wie der Wunsch nach Anerkennung und Wiedergutmachung des erlittenen Leids; darauf zielt Restorative Justice ab. Die Schweizer Politik diskutiert, diesen Ansatz in die Rechtsordnung aufzunehmen. Im engeren Sinne bezeichnet Restorative Justice eine Justizrichtung, welche ergänzend, alternativ oder unabhängig von Strafverfahren eingesetzt werden kann. Im weiteren Sinne drückt der Begriff eine Lebensphilosophie aus, die beabsichtigt Konflikte konstruktiv auf der Basis von Dialog und Gleichberechtigung zu lösen. Bislang gibt es in der Schweiz wenig Forschung zu Restorative Justice. Diese Master-Thesis untersucht mittels Mixed Method Design das Potential von Restorative Justice bei sexualisierter Gewalt im Erwachsenenbereich. Eine Online-Umfrage und Leitfadeninterviews bei Opferberatungsstellen in der Deutschschweiz zeigen den Befund, dass Restorative Justice eher bei leichten Straftaten als geeignet erachtet wird, schwere Delikte werden nicht gänzlich ausgeklammert. Für Fachberatende ist es denkbar unter bestimmten Voraussetzungen in Restorative Justice-Verfahren mitzuwirken; sie äussern Interesse an entsprechender Weiterbildung. Diese Master-Thesis regt den Diskurs an, indem sie einen Überblick zu Restorative Justice bei sexualisierter Gewalt und wichtige Erkenntnisse sowie eine Definition der Autorinnen in der Schlussbetrachtung liefert.
description: + Code Diss LU: hslusa masa be + Fussnote: Master of Science in Sozialer Arbeit, Bern, Luzern, St. Gallen, 2023 + NL-Code: NLLUHSA202309
Suppressing photochemical reactions with quantized light fields
Creators: name: Galego, Javier
name: Garcia-Vidal, Francisco J.
name: Feist, Johannes
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chemical Physics (physics.chem-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photoisomerization, i.e., a change of molecular structure after absorption of a photon, is one of the most fundamental photochemical processes. It can perform desirable functionality, e.g., as the primary photochemical event in human vision, where it stores electronic energy in the molecular structure, or for possible applications in solar energy storage and as memories, switches, and actuators; but it can also have detrimental effects, for example as an important damage pathway under solar irradiation of DNA, or as a limiting factor for the efficiency of organic solar cells. While photoisomerization can be avoided by shielding the system from light, this is of course not a viable pathway for approaches that rely on the interaction with external light (such as solar cells or solar energy storage). Here, we show that strong coupling of organic molecules to a confined light mode can be used to strongly suppress photoisomerization, and thus convert molecules that normally show fast photodegradation into photostable forms.
Discrete Uniqueness Sets for Functions with Spectral Gaps
Creators: name: Olevskii, Alexander
name: Ulanovskii, Alexander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42A64, 42A99

description: It is well-known that entire functions whose spectrum belongs to a fixed bounded set $S$ admit real uniformly discrete uniqueness sets $Λ$. We show that the same is true for much wider spaces of continuous functions. In particular, Sobolev spaces have this property whenever $S$ is a set of infinite measure having "periodic gaps". The periodicity condition is crucial. For sets $S$ with randomly distributed gaps, we show that the uniformly discrete sets $Λ$ satisfy a strong non-uniqueness property: Every discrete function $c(λ)\in l^2(Λ)$ can be interpolated by an analytic $L^2$-function with spectrum in $S$.
Aspects of estimation and testing for cointegrated time series
Creators: name: Harris, David
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the Reference field.
The Chow form of a reciprocal linear space
Creators: name: Kummer, Mario
name: Vinzant, Cynthia
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Combinatorics (math.CO)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: A reciprocal linear space is the image of a linear space under coordinate-wise inversion. These fundamental varieties describe the analytic centers of hyperplane arrangements and appear as part of the defining equations of the central path of a linear program. Their structure is controlled by an underlying matroid. This provides a large family of hyperbolic varieties, recently introduced by Shamovich and Vinnikov. Here we give a definite determinantal representation to the Chow form of a reciprocal linear space. One consequence is the existence of symmetric rank-one Ulrich sheaves on reciprocal linear spaces. Another is a representation of the entropic discriminant as a sum of squares. For generic linear spaces, the determinantal formulas obtained are closely related to the Laplacian of the complete graph and generalizations to simplicial matroids. This raises interesting questions about the combinatorics of hyperbolic varieties and connections with the positive Grassmannian.
description: 21 pages
Inhalte von Beratungen für volljährige Betroffene häuslicher Gewalt: Eine Analyse des Umfangs und der Unterschiede zwischen den Opferberatungsstellen in der Deutschschweiz
Creators: name: Frank, Tobias
Publisher: name: Zenodo
Year: 2023

description: In der Schweiz erbringen Opferberatungsstellen Beratungen für Betroffene von häuslicher Gewalt. Grundlage dazu bietet das Bundesgesetz über die Hilfe an Opfer von Straftaten (OHG). Für die Ausführung des OHG sind die Kantone beauftrag. So sind unterschiedliche lokale Versorgungsstrukturen entstanden. Mit dem Beitritt der Schweiz zur Istanbul-Konvention im Jahr 2017 rückte das Thema der häuslichen Gewalt vermehrt in den Fokus der Politik. Eine Überprüfung der Schweiz durch eine Expert*innen-Kommission des Europarats ergab, dass sich die Versorgungslage von Betroffenen häuslicher Gewalt je nach Kanton unterscheidet. Diese Feststellung wird in der vorliegenden Master-Thesis weiter untersucht. Dabei wird der Fokus auf Beratungsinhalte von Opferberatungsstellen in der Deutschschweiz gelegt. In einem ersten Schritt wird der Frage nachgegangen, welche Inhalte eine bedarfsgerechte Beratung von volljährigen Betroffenen häuslicher Gewalt umfasst. Dieser Katalog von Beratungsinhalten wird anschliessend mit dem tatsächlichen Angebot von Opferberatungsstellen der Deutschschweiz, die über ein entsprechendes Angebot verfügen, abgeglichen. So wird untersucht, welche Inhalte tatsächlich abgedeckt werden. In einem dritten Schritt werden Erklärungen für mögliche Unterschiede zwischen den einzelnen Beratungsstellen gesucht. Als wichtige Erkenntnis der Untersuchung wird ein Katalog an Beratungsinhalten für Betroffene häuslicher Gewalt präsentiert. Dieser ist in fünf Oberthemen gegliedert, nämlich «Beratung zu psychosozialen Themen», «Beratung zu sozialen Themen», «Beratung zum Thema Sicherheit», «Beratung zu rechtlichen Themen» und «Unterstützung bei der Inanspruchnahme weiterer Hilfeleistungen». Weiter wird gezeigt, dass zwischen den einzelnen Organisationen der Opferberatung in der Deutschschweiz in Sachen Beratungsinhalte Unterschiede vorhanden sind. Diese sind vor allem in den Themenbereichen der «Beratung zu sozialen Themen» und «Unterstützung bei der Inanspruchnahme weiterer Hilfeleistungen» zu finden. Eine Erklärung dafür, dass einige Beratungsstellen zu weniger Inhalten eine Beratung anbieten, könnten mangelnde Ressourcen sein. Den einzelnen Opferberatungsstellen wird aufgrund der erarbeiteten Erkenntnisse empfohlen, die angebotenen Beratungsinhalte zu überprüfen. Dabei ist der Schwerpunkt primär auf die Analyse zu legen, ob im Beratungsangebot Lücken bestehen und wie diese kompensiert werden können. Dabei ist bei der Vermittlung an andere Stellen zwingend eine gelingende Triage zu beachten.
description: + Code Diss LU: hslusa masa be + Fussnote: Master of Science in Sozialer Arbeit, Bern, Luzern, St. Gallen, 2023 + NL-Code: NLLUHSA202309
Supplementary files for the paper "Raising the analytical capacity of political science with root cause analysis."
Creators: name: Harich, Jack
name: Koloffon Rosas, Montserrat
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 440899
subject: Political science not elsewhere classified

description: The paper used a simulation model for analysis and a spreadsheet for study data. Here is what the files contain:DuelingLoops_Dem.mdl - The system dynamics model. We used Vensim.StudyResultsData.xlsx - Contains the raw data and statistical analysis for the Truth Literacy Training study.
New Evidence for (0,2) Target Space Duality
Creators: name: Anderson, Lara B.
name: Feng, He
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the context of (0,2) gauged linear sigma models, we explore chains of perturbatively dual heterotic string compactifications. The notion of target space duality originates in non-geometric phases and can be used to generate distinct GLSMs with shared geometric phases leading to apparently identical target space theories. To date, this duality has largely been studied at the level of counting states in the effective theories. We extend this analysis to the effective potential and loci of enhanced symmetry in dual theories. By engineering vector bundles with non-trivial constraints arising from slope-stability (i.e. D-terms) and holomorphy (i.e. F-terms) the detailed structure of the vacuum space of the dual theories can be explored. Our results give new evidence that GLSM target space duality may provide important hints towards a more complete understanding of (0,2) string dualities.
description: 53 pages, 6 figures, 3 Tables
Controllability of multiplex, multi-timescale networks
Creators: name: Pósfai, Márton
name: Gao, Jianxi
name: Cornelius, Sean P.
name: Barabási, Albert-László
name: D'Souza, Raissa M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: The paradigm of layered networks is used to describe many real-world systems -- from biological networks, to social organizations and transportation systems. Recently there has been much progress in understanding the general properties of multilayer networks, our understanding of how to control such systems remains limited. One aspect that makes this endeavor challenging is that each layer can operate at a different timescale, thus we cannot directly apply standard ideas from structural control theory of individual networks. Here we address the problem of controlling multilayer and multi-timescale networks focusing on two-layer multiplex networks with one-to-one interlayer coupling. We investigate the case when the control signal is applied to the nodes of one layer. We develop a theory based on disjoint path covers to determine the minimum number of inputs ($N_\T i$) necessary for full control. We show that if both layers operate on the same timescale then the network structure of both layers equally affect controllability. In the presence of timescale separation, controllability is enhanced if the controller interacts with the faster layer: $N_\T i$ decreases as the timescale difference increases up to a critical timescale difference, above which $N_\T i$ remains constant and is completely determined by the faster layer. In contrast, control becomes increasingly difficult if the controller interacts with the layer operating on the slower timescale and increasing timescale separation leads to increased $N_\T i$, again up to a critical value, above which $N_\T i$ still depends on the structure of both layers. By identifying the underlying mechanisms that connect timescale difference and controllability for a simplified model, we provide insight into disentangling how our ability to control real interacting complex systems is affected by a variety of sources of complexity.