cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identifying the elastic isotropy of architectured materials based on deep learning method
Creators: name: Wei, Anran
name: Xiong, Jie
name: Yang, Weidong
name: Guo, Fenglin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: With the achievement on the additive manufacturing, the mechanical properties of architectured materials can be precisely designed by tailoring microstructures. As one of the primary design objectives, the elastic isotropy is of great significance for many engineering applications. However, the prevailing experimental and numerical methods are normally too costly and time-consuming to determine the elastic isotropy of architectured materials with tens of thousands of possible microstructures in design space. The quick mechanical characterization is thus desired for the advanced design of architectured materials. Here, a deep learning-based approach is developed as a portable and efficient tool to identify the elastic isotropy of architectured materials directly from the images of their representative microstructures with arbitrary component distributions. The measure of elastic isotropy for architectured materials is derived firstly in this paper to construct a database with associated images of microstructures. Then a convolutional neural network is trained with the database. It is found that the convolutional neural network shows good performance on the isotropy identification. Meanwhile, it exhibits enough robustness to maintain the performance under fluctuated material properties in practical fabrications. Moreover, the well-trained convolutional neural network can be successfully transferred among different types of architectured materials, including two-phase composites and porous materials, which greatly enhance the efficiency of the deep learning-based approach. This study can give new inspirations on the fast mechanical characterization for the big-data driven design of architectured materials.
description: 15 pages, 7 figures; Correct the citation in Ref.20
Datavoidant: An AI System for Addressing Political Data Voids on Social Media
Creators: name: Flores-Saviaga, Claudia
name: Feng, Shangbin
name: Savage, Saiph
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: The limited information (data voids) on political topics relevant to underrepresented communities has facilitated the spread of disinformation. Independent journalists who combat disinformation in underrepresented communities have reported feeling overwhelmed because they lack the tools necessary to make sense of the information they monitor and address the data voids. In this paper, we present a system to identify and address political data voids within underrepresented communities. Armed with an interview study, indicating that the independent news media has the potential to address them, we designed an intelligent collaborative system, called Datavoidant. Datavoidant uses state-of-the-art machine learning models and introduces a novel design space to provide independent journalists with a collective understanding of data voids to facilitate generating content to cover the voids. We performed a user interface evaluation with independent news media journalists (N=22). These journalists reported that Datavoidant's features allowed them to more rapidly while easily having a sense of what was taking place in the information ecosystem to address the data voids. They also reported feeling more confident about the content they created and the unique perspectives they had proposed to cover the voids. We conclude by discussing how Datavoidant enables a new design space wherein individuals can collaborate to make sense of their information ecosystem and actively devise strategies to prevent disinformation.
A self-consistent numerical model for bipolar transport in carbon nanotube field-effect transistors
Creators: name: Clifford, Jason Paul
Publisher: name: University of British Columbia
Year: 2009

description: Carbon nanotube (CNT) field-effect transistors (CNTFETs) utilize a semiconducting CNT channel controlled by an isolated electrostatic gate. The essential physics of these devices is captured in a numerical model that allows calculation of energy band diagrams and currentvoltage (I-V) relationships to describe their behavior. The numerical CNTFET device model is based on a solution to Poisson's equation that links the electrostatic potential everywhere in the device to charge induced in the CNT. This charge is a function of the local electrostatic potential and can be calculated from the carrier distribution and the local density of states for the nanotube. Under equilibrium conditions the carrier distribution within the CNT channel is known precisely. However, under non-equilibrium conditions (when a source-drain bias is present) carrier distributions in the channel are distorted from their equilibrium forms due existence of hot electrons and holes emitted from the source and drain, respectively. Quasi-equilibrium Fermi statistics are used to approximate non-equilibrium carrier distributions using an equilibrium distribution function shifted in energy. Solving Poisson's equation self-consistently for charge and the electrostatic potential provides a profile of potential energy along the length of the CNT channel. Current flow in the device is a function of the ability of carriers to tunnel through or be thermionically emitted over the potential barriers in the channel. The contribution of both electrons and holes is considered when solving Poisson's equation and calculating the drain current. The numerical CNTFET model is a flexible framework for the examination of a wide variety of device geometries and materials parameters. It employs a finite element package to solve Poisson's equation in a two-dimensional projection of a cylindrical model space with azimuthal symmetry. The technique of conformal mapping is used to allow exact electrostatic solutions in unbounded structures without imposing artificial boundary conditions. The geometry and materials parameters of the CNTFET are systematically varied and the effects of these changes are observed in the performance predictions of the model. The model is also used to explore the behavior of more complex experimental architectures, such as partially gated CNTFETs, and provides new insight into their operation.
The Case for an Early Solar Binary Companion
Creators: name: Siraj, Amir
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We show that an equal-mass, temporary binary companion to the Sun in the solar birth cluster at a separation of $\sim 10^3 \; \mathrm{\; AU}$ would have increased the likelihood of forming the observed population of outer Oort cloud objects and of capturing Planet Nine. In particular, the discovery of a captured origin for Planet Nine would favor our binary model by an order of magnitude relative to a lone stellar history. Our model predicts an overabundance of dwarf planets, discoverable by LSST, with similar orbits to Planet Nine, which would result from capture by the stellar binary.
description: 5 pages, 2 figures; accepted to ApJL
MINIUSINAS DE LEITE COMO ALTERNATIVA DE DESENVOLVIMENTO REGIONAL
Creators: name: Ribeiro, Eliene Cristina Barros
name: Queda, Oriowaldo
name: Ribeiro, Eliene Cristina Barros
name: Queda, Oriowaldo
Publisher: name: Unknown
Year: 2007
Subjects: subject: dairy products
subject: home production
subject: informality

description: This paper aims to evaluate milk mini-plants as policy proposals, targeting the generation of income and employment in local/regional bounds. Thus, it will be possible to improve the production efficiency of the home producers and the quality of the product to the consumer. Theoretical concept discussions among several related authors found in the literature in order to incorporate some key elements which might configure a proper analysis of the proposal. The data were obtained through standard interviews applied to producers from nine establishments found in the Rural Development Office (RDO) of Araraquara/SP, which is branch of milk basin of Ribeirão Preto, localized in the countryside of the state of São Paulo, and to producers from a milk mini-plant regarded as a model, placed in the RDO of Piracicaba/SP. The results show that this type of activity has been constantly quoted as an alternative to reduce the trading of milk and dairy products in an informal way, as well as to increase the profitability of home producer. So this study pointed the complications found by the producers to obtain credit, registry and legalization of this type of enterprising, products trading and technical assistance, which leads them to remain in business informality.
A Deep Chandra Survey of the Globular Cluster 47 Tucanae: Catalog of Point Sources
Creators: name: Heinke, C. O.
name: Grindlay, J. E.
name: Edmonds, P. D.
name: Cohn, H. N.
name: Lugger, P. M.
name: Camilo, F.
name: Bogdanov, S.
name: Freire, P. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have detected 300 X-ray sources within the half-mass radius (2.79') of the globular cluster 47 Tucanae in a deep (281 ks) Chandra exposure. We perform photometry and simple spectral fitting for our detected sources, and construct luminosity functions, X-ray color-magnitude and color-color diagrams. Eighty-seven X-ray sources show variability on timescales from hours to years. Thirty-one of the new X-ray sources are identified with chromospherically active binaries from the catalogs of Albrow et al. The radial distributions of detected sources imply roughly 70 are background sources of some kind. Most source spectra are well-fit by thermal plasma models, except for quiescent low-mass X-ray binaries (qLMXBs, containing accreting neutron stars) and millisecond pulsars (MSPs). We identify three new candidate qLMXBs with relatively low X-ray luminosities. One of the brightest cataclysmic variables (CVs, X10) shows evidence (a 4.7 hour period pulsation and strong soft X-ray emission) for a magnetically dominated accretion flow as in AM Her systems. Most of the bright CVs require intrinsic N_H columns of order 10^{21} cm^-2, suggesting a possible DQ Her nature. A group of X-ray sources associated with bright (sub)giant stars also requires intrinsic absorption. By comparing the X-ray colors, luminosities, variability, and quality of spectral fits of the detected MSPs to those of unidentified sources, we estimate that a total of \~25-30 MSPs exist in 47 Tuc (<60 at 95% confidence), regardless of their radio beaming fraction. We estimate that the total number of neutron stars in 47 Tuc is of order 300, reducing the discrepancy between theoretical neutron star retention rates and observed neutron star populations in globular clusters. (Abstract truncated.)
description: Accepted by ApJ. 62 pages (18 pp. text, 17 pp. figures, 27 pp. tables), 19 figures (8 color), 8 tables
Time-resolved multimode heterodyne detection for dissecting coherent states of matter
Creators: name: Glerean, Filippo
name: Jarc, Giacomo
name: Marciniak, Alexandre
name: Sparapassi, Giorgia
name: Montanaro, Angela
name: Rigoni, Enrico Maria
name: Giusti, Francesca
name: Tollerud, Jonathan Owen
name: Fausti, Daniele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Unveiling and controlling the coherent evolution of low energy states is a key to attain light driven new functionalities of materials. Here we investigate the coherent evolution of non-equilibrium photon-phonon Raman interactions in the low photon number regime via femtosecond time-resolved multimode heterodyne detection. The time dependence of the weak probe spectral components is revealed by interferential amplification with shaped phase-locked reference fields that allow for a frequency selective amplification. We report measurements on $α$-quartz that show that both amplitude and phase of the probe spectral components are modulated at the phonon frequency, but encode qualitatively different responses which are representative respectively of the time dependent position and momentum of the atoms. We stress that the sensitivity achieved here (1-10 photons per pulse) may be of relevance for both quantum information technologies and time domain studies on photosensitive materials.
Generative Artificial Intelligence in Higher Education: A 360° Perspective
Creators: name: García-Peñalvo, Francisco José
Publisher: name: GRIAL research group
Year: 2024
Subjects: Generative Artificial Intelligence
Higher Education
Educational Innovation
Technology and Society
Personalized Learning

description: Keynote at the IFE Conference Special Event; Artificial Intelligence in Education Summit, held in the context of the IFE Conference 2024, Tecnológico de Monterrey, Monterrey, Mexico, January 23-25, 2024.

Generative Artificial Intelligence (GenAI) has become a focal point in the higher education landscape. This innovative approach promises to revolutionize how students learn, teachers teach, and educational institutions evolve. In this conference, we will explore how GenAI affects different actors in the educational field, from teachers and students to decision-makers and technology development experts.

The pros and cons will be analyzed from each actor's perspective for a comprehensive and holistic view. We will also discuss the ethical and social challenges of incorporating these technologies, such as data privacy and equity in access to advanced educational resources.

From the perspective of the teaching staff, how GenAI can be a tool to enrich course content and offer more interactive and engaging teaching methodologies will be addressed. On the other hand, the impact of this technology on institutional decision-making is examined, with a special emphasis on curriculum planning and resource management.

This conference aims to provide a comprehensive understanding of how GenAI is shaping the future of education, looking at all the stakeholders involved in this transformative process.

The presentation is also available in Spanish.
Multi-strange baryon correlations in p+p and d+Au collisions at $\sqrt{s}=200$ GeV
Creators: name: Bezverkhny, Betty I.
name: Collaboration, STAR
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Multi-strange baryon correlations with charged hadrons have been measured in the p+p and d+Au reference systems at s^(0.5) = 200 GeV per nucleon pair, for future comparison with correlations in Au+Au collisions. Weak correlation peaks are observed on both the same side as the high pT (pT > 2 GeV/c) Xi (the trigger particle), and on the away side (pi radians away in azimuth) in the p+p data. A quantitative analysis requires better statistics than is presently available. Distinct peaks are also seen in PYTHIA simulations of p+p collisions, but spectra comparison between PYTHIA and data shows that PYTHIA does not reproduce the data. A clear correlation is also present in d+Au data, establishing a reference foundation for a future Au+Au study.
description: Proceedings for Hot Quarks 2004 Conference in Taos, NM. 7 pages, 9 figures
Production of a Z boson and two jets with one heavy-quark tag
Creators: name: Campbell, J.
name: Ellis, R. K.
name: Maltoni, F.
name: Willenbrock, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a next-to-leading-order calculation of the production of a Z boson with two jets, one or more of which contains a heavy quark (Q=c,b). We show that the cross section with only one heavy-quark jet is larger than that with two heavy-quark jets at both the Fermilab Tevatron and the CERN LHC. These processes are the dominant irreducible backgrounds to a Higgs boson produced in association with a Z boson, followed by h->bb. Our calculation makes use of a heavy-quark distribution function, which resums collinear logarithms and makes the next-to-leading-order calculation tractable.
description: 11 pages, 5 figures. Erratum added
Low-Frequency Instability of Linearly and Circularly-Polarized-Microwave-Field Produced Plasmas
Creators: name: Shokri, B.
name: Ghorbanalilu, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The gas breakdown produced by high-power pulsed linearly and circularly polarized microwave fields which are much weaker than the atomic fields is investigated in the non-relativistic limit. Obtained the electron distribution function produced by the interaction with intense linearly and circularly polarized microwave fields, it is shown that it is non-equilibrium and anisotropic. Finding the general dispersion relation and analyzing it, we firstly obtain the low frequency oscillations and secondly we show that an instability may develop in the aforementioned system. It will be shown that for linearly polarized microwave fields this instability may always develop but for the circular polarization fields it grows only when ion density is higher than a critical density.
description: 12th International Congress on Plasma Physics, 25-29 October 2004, Nice (France)
The Cavity Master Equation: average and fixed point of the ferromagnetic model in random graphs
Creators: name: Domínguez, E.
name: Machado, D.
name: Mulet, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The Cavity Master Equation (CME) is a closure scheme to the usual Master Equation representing the dynamics of discrete variables in continuous time. In this work we explore the CME for a ferromagnetic model in a random graph. We first derive and average equation of the CME that describes the dynamics of mean magnetization of the system. We show that the numerical results compare remarkably well with the Monte Carlo simulations. Then, we show that the stationary state of the CME is well described by BP-like equations (independently of the dynamic rules that let the system towards the stationary state). These equations may be rewritten exactly as the fixed point solutions of the Cavity Equation if one also assumes that the stationary state is well described by a Boltzmann distribution.
description: 20 pages, 7 figures, one appendix
Phosphorus-Based Application of Livestock Manure and the Law of Unintended Consequences
Creators: name: Norwood, F. Bailey
name: Chvosta, Jan
name: Norwood, F. Bailey
name: Chvosta, Jan
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: Production Economics
subject: best management practice
subject: eutrophication
subject: manure management
subject: nutrient runoff
subject: phosphorus standards
subject: pollution control
subject: water pollution

description: The application of manure phosphorus at rates above crop uptake has resulted in water pollution for some regions. In response, new manure management standards will require some farms to match manure phosphorus applications rates with crop uptake. For some regions, this will lead to more crop acres and a shift toward crops with greater nutrient uptake, both of which will increase nitrogen runoff. The greater nitrogen runoff could offset the lower phosphorus runoff to result in greater water pollution. This demonstrates the law of unintended consequences, which results when policy does not consider how economic agents respond to incentives.
DETERMINANTS OF HOUSEHOLD HURRICANE EVACUATION CHOICE IN FLORDIA
Creators: name: Solis, Daniel
name: Thomas, Michael H.
name: Letson, David
name: Solis, Daniel
name: Thomas, Michael H.
name: Letson, David
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Risk and Uncertainty
subject: hurricane
subject: evacuation choice
subject: probit

description: In this study we implement a set of econometric models to analyze the determinants of household hurricane evacuation choice for a sample of 1,355 households in Florida. This article contributes to the literature by accounting for two issues normally neglected in previous studies; namely, time and space. The empirical results suggest that households living in risky environments (mobile home and flooding areas) are more likely to evacuate. In addition, households with kids and those who have experience the treat of a hurricane also display higher probabilities to evacuate. Conversely, homeowners and households with pets are less likely to evacuate than their counterparts. Regional differences in propensity to evacuate are also clearly demonstrated, with households in southeast Florida less likely to evacuate than those in northwest Florida.
A Framework for Evaluating Return on Investment in Management Development Programs
Creators: name: Lynch, Kara
name: Akridge, Jay T.
name: Schaffer, Scott P.
name: Gray, Allan W.
name: Lynch, Kara
name: Akridge, Jay T.
name: Schaffer, Scott P.
name: Gray, Allan W.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agribusiness
subject: Management education
subject: training
subject: assessment
subject: evaluation
subject: return on investment

description: Return on Investment (ROI) is a financial metric that can be used to evaluate training and development investments. The objective of this research is to develop an evaluation process using ROI to assess the financial performance of management development programs. A three-phase model for ROI evaluation is presented. These phases include assessment planning, data collection, and data analysis. This model is then tested and applied to a management development program. This paper provides a template for ROI evaluation that can be used to evaluate a wide variety of training and development activities by food and agribusiness firms.
Absolute measurement of the unresolved cosmic X-ray background in the 0.5-8 keV band with Chandra
Creators: name: Hickox, Ryan C.
name: Markevitch, Maxim
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the absolute measurement of the unresolved 0.5-8 keV cosmic X-ray background (CXB) in the Chandra Deep Fields (CDFs) North and South, the longest observations with Chandra (2 Ms and 1 Ms, respectively). We measure the unresolved CXB intensity by extracting spectra of the sky, removing all point and extended sources detected in the CDF. To model and subtract the instrumental background, we use observations obtained with ACIS in stowed position, not exposed to the sky. The unresolved signal in the 0.5-1 keV band is dominated by diffuse Galactic and local thermal-like emission. In the 1-8 keV band, the unresolved spectrum is adequately described by a power law with a photon index 1.5. We find unresolved CXB intensities of (1.04+/-0.14)x10^-12 ergs cm^-2 s^-1 deg^-2 for the 1-2 keV band and (3.4+/-1.7)x10^-12 ergs cm^-2 s^-1 deg^-2 for the 2-8 keV band. Our detected unresolved intensities in these bands significantly exceed the expected flux from sources below the CDF detection limits, if one extrapolates the logN/logS curve to zero flux. Thus these background intensities imply either a genuine diffuse component, or a steepening of the logN/logS curve at low fluxes, most significantly for energies <2 keV. Adding the unresolved intensity to the total contribution from sources detected in these fields and wider-field surveys, we obtain a total intensity of the extragalactic CXB of (4.6+/-0.3)x10^-12 ergs cm^-2 s^-1 deg^-2 for 1-2 keV and (1.7+/-0.2)x10^-11 ergs cm^-2 s^-1 deg^-2 for 2-8 keV. These totals correspond to a CXB power law normalization (for photon index 1.4) of 10.9 photons cm^-2 s^-1 keV^-1 sr^-1 at 1 keV. This corresponds to resolved fracations of 77+/-3% and 80+/-8% for 1-2 and 2-8 keV, respectively.
description: 23 emulateapj pages, accepted for publication in ApJ. Minor revisions, most notably a new summary of the error analysis
Neue Zugänge zur NS-Zeitung "Der Freiheitskampf"
Creators: name: Yu, Jingyi
name: Selle, Henrik
name: Zimmermann, Paul
Publisher: name: Zenodo
Year: 2024
Subjects: OCR
Computer-Vision
Historical Newspaper
PERO OCR
Digital Humanities
Digital History
Methods

description: Das Poster wurde für den Digital Humanities Day Leipzig 2023 des Forum Digital Humanities Leipzig (FDHL) erstellt.

Das Poster stellt drei studentische Projekte vor, die verschiedene Zugänge zur NS-Tageszeitung „Der Freiheitskampf” entwickeln.

Am Hannah-Arendt-Institut für Totalitarismusforschung an der TU Dresden (HAIT) wird in einem Langzeitvorhaben die von 1930 bis 1945 erschienene NS-Tageszeitung „Der Freiheitkampf” als Quelle für die historische Betrachtung der nationalsozialistischen Herrschaft in Sachsen erschlossen. Das Ergebnis ist eine Datenbank, die als detailliertes digitales Findbuch Expertinnen und Experten die gezielte Suche nach Artikeln aus der Zeit von 1930 bis Mai 1945 erlaubt. Im Zuge der noch laufenden Erschließung haben die Bearbeiter jedoch bereits Themen identifiziert, die geeignet sind, um z. B. Studierenden exemplarisch die Funktionsweise einer Parteizeitung und allgemein der staatlich gelenkten Presse im Nationalsozialismus anschaulich zu machen und ihre historisch-kritische Betrachtung zu erlernen. Aktuell aber wird eine solche Rezeption schon alleine dadurch erschwert, dass die Digitalisate keine Volltexterschließung aufweisen – was angesichts der weitgehenden Verwendung von Fraktur und dem komplexen Layout der Zeitung nicht überraschend ist. Ein weiteres Hemmnis ist, dass trotz der wissenschaftlichen Verschlagwortung, das eigentliche Finden inhaltlicher Zusammenhänge eine hohe Sachkenntnis zum Nationalsozialismus voraussetzt. Schwer einzuordnen ist für heutige Leser:innen schließlich die Sprache der Zeitung, bei der ohne Vorkenntnisse vielfach kaum einschätzbar ist, was wirklich spezifisch für die Ideologie der Zeitung ist und was in der ersten Hälfte des 20. Jh. über die politischen Lager hinweg allgemeiner Sprachgebrauch war.

In drei Teilprojekten wird erprobt, inwieweit digitale Methoden zu einer Überwindung der genannten Hemmnisse beitragen können und so einzelne Themen aus der Erschließung der Tageszeitung für den Wissenstransfer aufbereitet und zur Verfügung gestellt werden könnten.

Es handelt sich um *Work-in-Progress-Projekte*.
Neue Zugänge zur NS-Zeitung "Der Freiheitskampf"
Creators: name: Yu, Jingyi
name: Selle, Henrik
name: Zimmermann, Paul
Publisher: name: Zenodo
Year: 2023
Subjects: OCR
Computer-Vision
Historical Newspaper
PERO OCR
Digital Humanities
Digital History
Methods

description: Das Poster wurde für den Digital Humanities Day Leipzig 2023 des Forum Digital Humanities Leipzig (FDHL) erstellt.

Das Poster stellt drei studentische Projekte vor, die verschiedene Zugänge zur NS-Tageszeitung „Der Freiheitskampf” entwickeln.

Am Hannah-Arendt-Institut für Totalitarismusforschung an der TU Dresden (HAIT) wird in einem Langzeitvorhaben die von 1930 bis 1945 erschienene NS-Tageszeitung „Der Freiheitkampf” als Quelle für die historische Betrachtung der nationalsozialistischen Herrschaft in Sachsen erschlossen. Das Ergebnis ist eine Datenbank, die als detailliertes digitales Findbuch Expertinnen und Experten die gezielte Suche nach Artikeln aus der Zeit von 1930 bis Mai 1945 erlaubt. Im Zuge der noch laufenden Erschließung haben die Bearbeiter jedoch bereits Themen identifiziert, die geeignet sind, um z. B. Studierenden exemplarisch die Funktionsweise einer Parteizeitung und allgemein der staatlich gelenkten Presse im Nationalsozialismus anschaulich zu machen und ihre historisch-kritische Betrachtung zu erlernen. Aktuell aber wird eine solche Rezeption schon alleine dadurch erschwert, dass die Digitalisate keine Volltexterschließung aufweisen – was angesichts der weitgehenden Verwendung von Fraktur und dem komplexen Layout der Zeitung nicht überraschend ist. Ein weiteres Hemmnis ist, dass trotz der wissenschaftlichen Verschlagwortung, das eigentliche Finden inhaltlicher Zusammenhänge eine hohe Sachkenntnis zum Nationalsozialismus voraussetzt. Schwer einzuordnen ist für heutige Leser:innen schließlich die Sprache der Zeitung, bei der ohne Vorkenntnisse vielfach kaum einschätzbar ist, was wirklich spezifisch für die Ideologie der Zeitung ist und was in der ersten Hälfte des 20. Jh. über die politischen Lager hinweg allgemeiner Sprachgebrauch war.

In drei Teilprojekten wird erprobt, inwieweit digitale Methoden zu einer Überwindung der genannten Hemmnisse beitragen können und so einzelne Themen aus der Erschließung der Tageszeitung für den Wissenstransfer aufbereitet und zur Verfügung gestellt werden könnten.

Es handelt sich um *Work-in-Progress-Projekte*.
Embedded test strategies for system-on-a-chip designs
Creators: name: Fung, Ronald Wai Kit
Publisher: name: University of British Columbia
Year: 2009

description: System-on-a-chip (SoC) with reuse of intellectual property (IP) is gaining acceptance as the preferred style for integrated circuit (IC) designs. This paradigm shift poses great challenges to the overall design and test methodologies. To support SoC design and test, it is important to develop a corresponding set of Semiconductor Infrastructure IP (SI²P), which includes all components surrounding an IP core to facilitate system integration, timing synchronization, and test efforts. This thesis focuses on the SI²P needed for SoC test. First, a relationship is established between stuck-at (DC) and transition (AC) fault detection when applying a set of test vectors to a given design. To exploit this relationship, a new test pattern generation flow is proposed to maximize the DC fault coverage level with test patterns targeted at AC faults. The resulting vector set is a combination of pseudo-random test patterns and deterministic "top-up" vectors. The fault coverage of this approach is competitive with that achievable by an automatic test pattern generation (ATPG) tool. A hardware implementation of on-chip test pattern generation as part of a logic built-in self-test (logic BIST) solution is described. A matrix-based algorithm for constructing deterministic pattern generator circuits based on linear feedback shift registers (LFSR's) is presented. It is found that the resulting area overhead of the deterministic pattern generator is significant relative to the IP core under test and is a function of deterministic test pattern count. Additional SI²P components required for this embedded testing approach are also described.
MODEL: Motif-based Deep Feature Learning for Link Prediction
Creators: name: Wang, Lei
name: Ren, Jing
name: Xu, Bo
name: Li, Jianxin
name: Luo, Wei
name: Xia, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Link prediction plays an important role in network analysis and applications. Recently, approaches for link prediction have evolved from traditional similarity-based algorithms into embedding-based algorithms. However, most existing approaches fail to exploit the fact that real-world networks are different from random networks. In particular, real-world networks are known to contain motifs, natural network building blocks reflecting the underlying network-generating processes. In this paper, we propose a novel embedding algorithm that incorporates network motifs to capture higher-order structures in the network. To evaluate its effectiveness for link prediction, experiments were conducted on three types of networks: social networks, biological networks, and academic networks. The results demonstrate that our algorithm outperforms both the traditional similarity-based algorithms by 20% and the state-of-the-art embedding-based algorithms by 19%.
description: 14 pages, 7 figures
The effect of atom losses on the distribution of rapidities in the one-dimensional Bose gas
Creators: name: Bouchoule, Isabelle
name: Doyon, Benjamin
name: Dubail, Jerome
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically investigate the effects of atom losses in the one-dimensional (1D) Bose gas with repulsive contact interactions, a famous quantum integrable system also known as the Lieb-Liniger gas. The generic case of K-body losses (K = 1,2,3,...) is considered. We assume that the loss rate is much smaller than the rate of intrinsic relaxation of the system, so that at any time the state of the system is captured by its rapidity distribution (or, equivalently, by a Generalized Gibbs Ensemble). We give the equation governing the time evolution of the rapidity distribution and we propose a general numerical procedure to solve it. In the asymptotic regimes of vanishing repulsion -- where the gas behaves like an ideal Bose gas -- and hard-core repulsion -- where the gas is mapped to a non-interacting Fermi gas -- we derive analytic formulas. In the latter case, our analytic result shows that losses affect the rapidity distribution in a non-trivial way, the time derivative of the rapidity distribution being both non-linear and non-local in rapidity space.
description: v1: 6 pages + 2 appendices, 4 figures. v2: 6.5 pages + 2 appendices, 4 figures. Minor improvements and references added, results unchanged. v3: typos corrected; published version
Sufficient Conditions for Topological Order in Insulators
Creators: name: Hastings, M. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We prove the existence of low energy excitations in insulating systems at general filling factor under certain conditions, and discuss in which cases these may be identified as topological excitations. This proof is based on previously proven locality results. In the case of half-filling it provides a significantly shortened proof of the recent higher dimensional Lieb-Schultz-Mattis theorem.
description: 7 pages, no figures
Fast simulations of highly-connected spiking cortical models using GPUs
Creators: name: Golosio, Bruno
name: Tiddia, Gianmarco
name: De Luca, Chiara
name: Pastorelli, Elena
name: Simula, Francesco
name: Paolucci, Pier Stanislao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Biological sciences
subject: FOS: Computer and information sciences

description: Over the past decade there has been a growing interest in the development of parallel hardware systems for simulating large-scale networks of spiking neurons. Compared to other highly-parallel systems, GPU-accelerated solutions have the advantage of a relatively low cost and a great versatility, thanks also to the possibility of using the CUDA-C/C++ programming languages. NeuronGPU is a GPU library for large-scale simulations of spiking neural network models, written in the C++ and CUDA-C++ programming languages, based on a novel spike-delivery algorithm. This library includes simple LIF (leaky-integrate-and-fire) neuron models as well as several multisynapse AdEx (adaptive-exponential-integrate-and-fire) neuron models with current or conductance based synapses, user definable models and different devices. The numerical solution of the differential equations of the dynamics of the AdEx models is performed through a parallel implementation, written in CUDA-C++, of the fifth-order Runge-Kutta method with adaptive step-size control. In this work we evaluate the performance of this library on the simulation of a cortical microcircuit model, based on LIF neurons and current-based synapses, and on a balanced network of excitatory and inhibitory neurons, using AdEx neurons and conductance-based synapses. On these models, we will show that the proposed library achieves state-of-the-art performance in terms of simulation time per second of biological activity. In particular, using a single NVIDIA GeForce RTX 2080 Ti GPU board, the full-scale cortical-microcircuit model, which includes about 77,000 neurons and $3 \cdot 10^8$ connections, can be simulated at a speed very close to real time, while the simulation time of a balanced network of 1,000,000 AdEx neurons with 1,000 connections per neuron was about 70 s per second of biological activity.
Gamma-Ray and X-Ray Observations of the Periodic-Repeater FRB 180916 During Active Phases
Creators: name: Tavani, M.
name: Verrecchia, F.
name: Casentini, C.
name: Perri, M.
name: Ursi, A.
name: Pacciani, L.
name: Pittori, C.
name: Bulgarelli, A.
name: Piano, G.
name: Pilia, M.
name: Bernardi, G.
name: Addis, A.
name: Antonelli, L. A.
name: Argan, A.
name: Baroncelli, L.
name: Caraveo, P.
name: Cattaneo, P. W.
name: Chen, A.
name: Costa, E.
name: Di Persio, G.
name: Donnarumma, I.
name: Evangelista, Y.
name: Feroci, M.
name: Ferrari, A.
name: Fioretti, V.
name: Lazzarotto, F.
name: Longo, F.
name: Morselli, A.
name: Paoletti, F.
name: Parmiggiani, N.
name: Trois, A.
name: Vercellone, S.
name: Naldi, G.
name: Pupillo, G.
name: Bianchi, G.
name: Puccetti, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: FRB 180916 is a most intriguing source at 150 Mpc distance capable of producing repeating fast radio bursts with a periodic 16.35 day temporal pattern. We report on the X-ray and $γ$-ray observations of FRB 180916 obtained by AGILE and Swift. We focused on the recurrent 5-day time intervals of active radio bursting and present results obtained on Feb. 3 - 8; Feb. 25; Mar. 5 - 10; Mar. 22 - 28, 2020 during a multiwavelength campaign involving high-energy and radio observations. We also searched for temporal coincidences at millisecond timescales between all known radio bursts of FRB 180916 and X-ray and MeV events detectable by AGILE. We do not detect any simultaneous event or any extended X-ray and $γ$-ray emission on timescales of hours/days/weeks. Our cumulative X-ray (0.3-10 keV) flux upper limit of $5 \times\,10^{-14} \rm \, erg \, cm^{-2} s^{-1}$ (obtained during 5-day active intervals) translates into an isotropic luminosity upper limit of $L_{X,UL} \sim 1.5 \times\, 10^{41} \rm erg \, s^{-1}$. Observations above 100 MeV over a many-year timescale provide an average luminosity upper limit one order of magnitude larger. These results provide the so-far most stringent limits on high-energy emission from FRB 180916 and constrain the dissipation of magnetic energy from a magnetar-like source of radius $R_m$, internal magnetic field $B_m$ and dissipation timescale $τ_d$ to satisfy the relation $R_{m,6}^3 B_{m,16}^2 τ_{d,8}^{-1} \lesssim 1$, where $R_{m,6}$ is $R_m$ in units of $10^6$ cm, $B_{m,16}$ is $B_m$ in units of $10^{16}$ G, and $τ_{d,8}$ in units of $10^8$ s.
description: Accepted for publication by the Astrophysical Journal Letters on April 5, 2020
Big Networks: A Survey
Creators: name: Bedru, Hayat Dino
name: Yu, Shuo
name: Xiao, Xinru
name: Zhang, Da
name: Wan, Liangtian
name: Guo, He
name: Xia, Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A network is a typical expressive form of representing complex systems in terms of vertices and links, in which the pattern of interactions amongst components of the network is intricate. The network can be static that does not change over time or dynamic that evolves through time. The complication of network analysis is different under the new circumstance of network size explosive increasing. In this paper, we introduce a new network science concept called big network. Big networks are generally in large-scale with a complicated and higher-order inner structure. This paper proposes a guideline framework that gives an insight into the major topics in the area of network science from the viewpoint of a big network. We first introduce the structural characteristics of big networks from three levels, which are micro-level, meso-level, and macro-level. We then discuss some state-of-the-art advanced topics of big network analysis. Big network models and related approaches, including ranking methods, partition approaches, as well as network embedding algorithms are systematically introduced. Some typical applications in big networks are then reviewed, such as community detection, link prediction, recommendation, etc. Moreover, we also pinpoint some critical open issues that need to be investigated further.
description: 69 pages, 4 figures
Random Walks: A Review of Algorithms and Applications
Creators: name: Xia, Feng
name: Liu, Jiaying
name: Nie, Hansong
name: Fu, Yonghao
name: Wan, Liangtian
name: Kong, Xiangjie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Social and Information Networks (cs.SI)
subject: Machine Learning (cs.LG)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: A random walk is known as a random process which describes a path including a succession of random steps in the mathematical space. It has increasingly been popular in various disciplines such as mathematics and computer science. Furthermore, in quantum mechanics, quantum walks can be regarded as quantum analogues of classical random walks. Classical random walks and quantum walks can be used to calculate the proximity between nodes and extract the topology in the network. Various random walk related models can be applied in different fields, which is of great significance to downstream tasks such as link prediction, recommendation, computer vision, semi-supervised learning, and network embedding. In this paper, we aim to provide a comprehensive review of classical random walks and quantum walks. We first review the knowledge of classical random walks and quantum walks, including basic concepts and some typical algorithms. We also compare the algorithms based on quantum walks and classical random walks from the perspective of time complexity. Then we introduce their applications in the field of computer science. Finally we discuss the open issues from the perspectives of efficiency, main-memory volume, and computing time of existing algorithms. This study aims to contribute to this growing area of research by exploring random walks and quantum walks together.
description: 13 pages, 4 figures
Reconfigurable Intelligent Surfaces: Three Myths and Two Critical Questions
Creators: name: Björnson, Emil
name: Özdogan, Özgecan
name: Larsson, Erik G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The search for physical-layer technologies that can play a key role in beyond-5G systems has started. One option is reconfigurable intelligent surfaces (RIS), which can collect wireless signals from a transmitter and passively beamform them towards the receiver. The technology has exciting prospects and is quickly gaining traction in the communication community, but in the current hype we have witnessed how several myths and overstatements are spreading in the literature. In this article, we take a neutral look at the RIS technology. We first review the fundamentals and then explain specific features that can be easily misinterpreted. In particular, we debunk three myths: 1) Current network technology can only control the transmitter and receiver, not the environment in between; 2) A better asymptotic array gain is achieved than with conventional beamforming; 3) The pathloss is the same as with anomalous mirrors. To inspire further research, we conclude by identifying two critical questions that must be answered for RIS to become a successful technology: 1) What is a convincing use case for RIS?; 2) How can we estimate channels and control an RIS in real time?
description: To appear in IEEE Communications Magazine, 7 pages, 6 figures
Bibio femoralis Meigen 1838
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Bibionidae
Bibio
Bibio femoralis

description: Bibio femoralis MEIGEN, 1838
Bgld, St. Margarethen, 24.3.2018, 3 Ex.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 766, DOI: 10.5281/zenodo.4004374
Longitudinal current profile reconstruction from wakefield response in plasmas and structures
Creators: name: Roussel, Ryan
name: Andonian, Gerard
name: Rosenzweig, James
name: Baturin, Stanislav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Present-day and next-generation accelerators, particularly for applications in driving wakefield-based schemes, require longitudinal beam shaping and attendant longitudinal characterization for experimental optimization. Here we present a diagnostic method which reconstructs the longitudinal beam profile at the location of a wakefield-generating source. The methods presented derive the longitudinal profile of a charged particle beam solely from measurement of the time-resolved centroid energy change due to wakefield effects. The reconstruction technique is based on a deconvolution algorithm that is fully generalizable to any analytically or numerically calculable Green's function for the wakefield excitation mechanism. This method is shown to yield precise features in the longitudinal current distribution reconstruction. We demonstrate the accuracy and efficacy of this technique using simulations and experimental examples, in both plasmas and dielectric structures, and compare to the experimentally measured longitudinal beam parameters as available. The limits of resolution and applicability to relevant scenarios are also examined.
description: Submitted to PRAB
Rhagio immaculatus
Creators: name: Schlüsslmayr, Gerhard
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Rhagionidae
Rhagio
Rhagio immaculatus

description: Rhagio immaculatus (MEIGEN, 1804)
Bgld, Loretto, Frauenwiesen, 15.6.17, 2 Ex.
Neu für Burgenland.
description: Published as part of Schlüsslmayr, Gerhard, 2018, Erstnachweise von Fliegen (Diptera) für Österreich und einige Bundesländer, pp. 765-800 in Linzer biologische Beiträge 50 (1) on page 766, DOI: 10.5281/zenodo.4004374