cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Automatic Network Fingerprinting through Single-Node Motifs
Creators: name: Echtermeyer, Christoph
name: Costa, Luciano da Fontoura
name: Rodrigues, Francisco A.
name: Kaiser, Marcus
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Complex networks have been characterised by their specific connectivity patterns (network motifs), but their building blocks can also be identified and described by node-motifs---a combination of local network features. One technique to identify single node-motifs has been presented by Costa et al. (L. D. F. Costa, F. A. Rodrigues, C. C. Hilgetag, and M. Kaiser, Europhys. Lett., 87, 1, 2009). Here, we first suggest improvements to the method including how its parameters can be determined automatically. Such automatic routines make high-throughput studies of many networks feasible. Second, the new routines are validated in different network-series. Third, we provide an example of how the method can be used to analyse network time-series. In conclusion, we provide a robust method for systematically discovering and classifying characteristic nodes of a network. In contrast to classical motif analysis, our approach can identify individual components (here: nodes) that are specific to a network. Such special nodes, as hubs before, might be found to play critical roles in real-world networks.
description: 16 pages (4 figures) plus supporting information 8 pages (5 figures)
Appendix_Frustrated Aspirations and Different Types of Political Violence.pdf
Creators: name: Kursani, Shpend
name: Krakowski, Krzysztof
Publisher: name: figshare
Year: 2022
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 160201 Causes and Prevention of Crime
subject: FOS: Law
subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: Appendix for "Frustrated Aspirations and Different Types of Political Violence: Evidence from 'Folk Knowledge' in Kosovo"
Antigen-specific electrophoretic cell separation for immunological investigations
Creators: name: Hansen, Ernil
name: Wustrow, T. P.
name: Hannig, K.
Publisher: name: Universität Regensburg
Year: 1989
Subjects: subject: 610 Medizin
subject: Antibodies, Monoclonal/immunology
subject: Antigens, Surface/immunology
subject: B-Lymphocytes/immunology
subject: Cell Separation/methods
subject: Concanavalin A
subject: Humans
subject: Immunoelectrophoresis/methods
subject: Immunoglobulin G/immunology
subject: Immunoglobulin M/immunology
subject: Immunosuppression
subject: Thiobarbiturates

description: Preincubation of human blood lymphocytes with cell surface antigen specific antibodies under non-capping conditions reduces the electrophoretic mobility of the corresponding lymphocyte subpopulation. Antigen-positive and antigen-negative cells can be separated by free flow electrophoresis with high yield, purity and viability. The use of fluorescence-labelled second antibodies augments the induced decrease in net surface charge density, and allows rapid detection of antigen-positive cells in the fractions of electrophoresis. Carrier-free cell electrophoresis of human peripheral blood lymphocytes after reaction with anti-IgM-antibody or the monoclonal antibodies OKT4 or OKT8, and sandwich staining with tetrarhodamine isothiocyanate-labelled anti-IgG resulted in the large-scale separation of high pure human B and T lymphocyte subpopulations. Their functional integrity was shown in assays of lymphocyte transformation and of antigen-specific induction and regulation of antibody synthesis in vitro. These separate lymphocyte subpopulations are useful tools for immunological investigations. While, for instance, the effects of drugs on human lymphocytes are obscured by coincident changes in cell composition of the peripheral blood tested that do not by themselves reflect whole body immunocompetence, the cell separation and in vitro assays at a defined cell number and cell composition allow the recording of quantitative changes in the function of different cell subpopulations. We studied the influence of the anesthetic thiopental on separated human lymphocyte subsets. In both polyclonal lectin stimulation and in vitro antibody production, thiopental exhibited a noncytotoxic suppression of lymphocyte functions. B-Cells, T-helper and T-suppressor cells were equally affected and showed the same dose response.(ABSTRACT TRUNCATED AT 250 WORDS)
ΔΙΑΒΑΙΝΟΝΤΑΣ ΤΑ ΣΥΝΟΡΑ :από την κλασσική λογοτεχνία ενηλίκων στην παιδική και η θέση της αρχαίας τραγωδίας στο σύμπαν της παιδικής λογοτεχνίας
Creators: name: Ευαγγελία Μουλά
Publisher: name: ΚΕΙΜΕΝΑ
Year: 2005

description: ΔΙΑΒΑΙΝΟΝΤΑΣ ΤΑ ΣΥΝΟΡΑ :από την κλασσική λογοτεχνία ενηλίκων στην παιδική και η θέση της αρχαίας τραγωδίας στο σύμπαν της παιδικής λογοτεχνίας
description: ΚΕΙΜΕΝΑ, Τεύχος 3 (Δεκέμβριος 2005)
Αναπαραστάσεις του μετανάστη στο παιδικό μυθιστόρημα
Creators: name: Καρακίτσιος Ανδρέας
name: Καρασαββίδου Ελένη
Publisher: name: ΚΕΙΜΕΝΑ
Year: 2005

description: Αναπαραστάσεις του μετανάστη στο παιδικό μυθιστόρημα
description: ΚΕΙΜΕΝΑ, Τεύχος 3 (Δεκέμβριος 2005)
The 270 MeV deuteron beam polarimeter at the Nuclotron Internal Target Station
Creators: name: Kurilkin, P. K.
name: Ladygin, V. P.
name: Uesaka, T.
name: Suda, K.
name: Gurchin, Yu. V.
name: Isupov, A. Yu.
name: Itoh, K.
name: Janek, M.
name: Karachuk, J. -T.
name: Kawabata, T.
name: Khrenov, A. N.
name: Kiselev, A. S.
name: Kizka, V. A.
name: Kliman, J.
name: Krasnov, V. A.
name: Livanov, A. N.
name: Maeda, Y.
name: Malakhov, A. I.
name: Matousek, V.
name: Morhach, M.
name: Reznikov, S. G.
name: Sakaguchi, S.
name: Sakai, H.
name: Sasamoto, Y.
name: Sekiguchi, K.
name: Turzo, I.
name: Vasiliev, T. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A deuteron beam polarimeter has been constructed at the Internal Target Station at the Nuclotron of JINR. The polarimeter is based on spin-asymmetry measurements in the d-p elastic scattering at large angles and the deuteron kinetic energy of 270 MeV. It allows to measure vector and tensor components of the deuteron beam polarization simultaneously.
description: 15 pages, 9 figures
HEPData and pyhf
Creators: name: Watt, Graeme
Publisher: name: Zenodo
Year: 2023

description: I will give an overview of the HEPData project (hepdata.net), a repository for publication-related data from experimental particle physics.  I will describe current support for hosting statistical models in the HistFactory JSON format used by pyhf, as well as links with analysis frameworks like Rivet and MadAnalysis 5.  The HEPData software is open source under the @HEPData organization on GitHub and external contributions are welcome.
Spontaneously axisymmetry breaking phase in a binary mixture of spinor Bose-Einstein condensates
Creators: name: Xu, Z. F.
name: Mei, J. W.
name: Lü, R.
name: You, L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We study the ground state phases for a mixture of two atomic spin-1 Bose-Einstein condensates (BECs) in the presence of a weak magnetic (B-) field. The ground state is found to contain a broken-axisymmetry (BA) phase due to competitions among intra- and inter-species spin exchange interactions and the linear Zeeman shifts. This is in contrast to the case of a single species spin- 1 condensate, where the axisymmetry breaking results from competitions among the linear and quadratic Zeeman shifts and the intra-species ferromagnetic interaction. All other remaining ground state phases for the mixture are found to preserve axisymmetry. We further elaborate on the ground state phase diagram and calculate their Bogoliubov excitation spectra. For the BA phase, there exist three Goldstone modes attempting to restore the broken U(1) and SO(2) symmetries.
description: 10 pages, 7 figures
Sensory Competition in the Face Processing Areas of the Human Brain
Creators: name: Nagy, Krisztina
name: Greenlee, Mark W.
name: Kovács, Gyula
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: Radiology and Medical Imaging, Physiology, Neuroscience, Computational Biology
subject: 150 Psychologie

description: The concurrent presentation of multiple stimuli in the visual field may trigger mutually suppressive interactions throughout the ventral visual stream. While several studies have been performed on sensory competition effects among non-face stimuli relatively little is known about the interactions in the human brain for multiple face stimuli. In the present study we analyzed the neuronal basis of sensory competition in an event-related functional magnetic resonance imaging (fMRI) study using multiple face stimuli. We varied the ratio of faces and phase-noise images within a composite display with a constant number of peripheral stimuli, thereby manipulating the competitive interactions between faces. For contralaterally presented stimuli we observed strong competition effects in the fusiform face area (FFA) bilaterally and in the right lateral occipital area (LOC), but not in the occipital face area (OFA), suggesting their different roles in sensory competition. When we increased the spatial distance among pairs of faces the magnitude of suppressive interactions was reduced in the FFA. Surprisingly, the magnitude of competition depended on the visual hemifield of the stimuli: ipsilateral stimulation reduced the competition effects somewhat in the right LOC while it increased them in the left LOC. This suggests a left hemifield dominance of sensory competition. Our results support the sensory competition theory in the processing of multiple faces and suggests that sensory competition occurs in several cortical areas in both cerebral hemispheres.
Electrochemical control of quantum interference in anthraquinone-based molecular switches
Creators: name: Markussen, Troels
name: Schiøtz, Jakob
name: Thygesen, Kristian S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Using first-principles calculations we analyze the electronic transport properties of a recently proposed anthraquinone based electrochemical switch. Robust conductance on/off ratios of several orders of magnitude are observed due to destructive quantum interference present in the anthraquinone, but absent in the hydroquinone molecular bridge. A simple explanation of the interference effect is achieved by transforming the frontier molecular orbitals into localized molecular orbitals thereby obtaining a minimal tight-binding model describing the transport in the relevant energy range in terms of hopping via the localized orbitals. The topology of the tight-binding model, which is dictated by the symmetries of the molecular orbitals, determines the amount of quantum interference.
description: 6 pages, 6 figures
La doctrina de las political questions en el constitucionalismo norteamericano y la imposibilidad del Congreso de "excluir" del ejercicio del cargo a sus miembros
Creators: name: Nieto Olvera, Pedro David
Publisher: name: Zenodo
Year: 2023
Subjects: political questions
constitucionalismo
norteamericano
Marbury v. Madison

description: El caso Marbury v. Madison (1803), como lo señala Kelsen, "pasó a la historia como el gran momento del constitucionalismo en el que comenzó a operar la garantía jurisdiccional de la Constitución". Además, se crea un precedente de legitimidad de la Corte Suprema para resolver problemas constitucionales importantes sobre conflictos políticos y separación de poderes, es decir, casos de naturaleza jurídica política en los que la Corte "puede" decidir no resolver. Por el contrario, si considera que a pesar de su contenido político, el caso cuenta con una solución fundada en la Constitución, la Corte puede decidir que el problema debe resolverse en los tribunales. Es decir, fuera de la política.
Tech and aging: How to enable independent living with digital innovations
Creators: name: Schildhauer, Thomas
name: Ulich, Annika
name: Winckler, Pia
Publisher: name: Zenodo
Year: 2022
Subjects: Aging, digital health, adaptive aging, learning lab, participatory design

description: The health and care sector faces a myriad of irresolvable challenges. The questions are manifold: how can your older relatives age on their own terms, in their own home? How can understaffed healthcare facilities support their employees? How can changing demographics and changing needs be addressed? The digitalisation of care can provide important answers in the field of tech and aging.
Procedure and checklist for on-­site visit evaluation
Creators: name: Marialuisa  Lavitrano, Outi	 Törnwall
Publisher: name: Zenodo
Year: 2016

description: In relation to  Task  1   on   mapping  and  selecting established  biobanks   in   Europe  that are  complying  with  BBMRI-­ERIC      procedures,   the parameters   for  measuring   the  quality       level   and  richness   in       samples     and   data  in       biobanks  have been       defined.   A  self-­‐evaluation   tool   for  helping National Nodes   to identify   biobanks  within their       network    which       give       assurance   of    quality  of  samples  and     data,   service   to  the scientific     community,   interoperability,  compliance       with       best   practices  has   been  set   up    in    a  form  of questionnaire  for    biobanks  to       describe      themselves       .A    more  specific  on-­‐line       tool       for       pre-­analytics  evaluation   of    biobanks   will be   done   in   WP6   (D6.3).  The   questionnaire    for   the  biobanks   to   describe themselves   have been  applied to  all       parameters  in  compliance with the  BBMRI-­‐ERIC  Partner   Charter1. This    takes   into account   areas  of  primacy, access    policy,  data protection  and  management       policy,  informed   consent,  infrastructure  and management,  quality  management   as   well      as       charges. Hence,  all  Partner       Charter   items  were    included   in  the        questionnaire   and a  standardised   method of  evaluation       was defined   (parameters  and  scores  for   assessment  were defined).The procedure   and checklist  for  on-­‐site  visit   evaluation  of  the   biobanks have been set up. The work towards mapping  and       selecting       the       established   biobanks  in  Europe  was  realized within  M1-­‐M8    time  of  the ADOPT  project.
The USP7/Dnmt1 complex stimulates the DNA methylation activity of Dnmt1 and regulates the stability of UHRF1
Creators: name: Felle, Max
name: Joppien, Saskia
name: Németh, Attila
name: Diermeier, Sarah
name: Thalhammer, Verena
name: Dobner, Thomas
name: Kremmer, Elisabeth
name: Kappler, Roland
name: Längst, Gernot
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: Gene Regulation, Chromatin and Epigenetics
subject: 570 Biowissenschaften, Biologie

description: Aberrant DNA methylation is often associated with cancer and the formation of tumors; however, the underlying mechanisms, in particular the recruitment and regulation of DNA methyltransferases remain largely unknown. In this study, we identified USP7 as an interaction partner of Dnmt1 and UHRF1 in vivo. Dnmt1 and USP7 formed a soluble dimer complex that associated with UHRF1 as a trimeric complex on chromatin. Complex interactions were mediated by the C-terminal domain of USP7 with the TS-domain of Dnmt1, whereas the TRAF-domain of USP7 bound to the SRA-domain of UHRF1. USP7 was capable of targeting UHRF1 for deubiquitination and affects UHRF1 protein stability in vivo. Furthermore, Dnmt1, UHRF1 and USP7 co-localized on silenced, methylated genes in vivo. Strikingly, when analyzing the impact of UHRF1 and USP7 on Dnmt1-dependent DNA methylation, we found that USP7 stimulated both the maintenance and de novo DNA methylation activity of Dnmt1 in vitro. Therefore, we propose a dual role of USP7, regulating the protein turnover of UHRF1 and stimulating the enzymatic activity of Dnmt1 in vitro and in vivo.
Hábitos de higiene, ¿Qué aprendimos de la pandemia de Influenza AH1N1?
Creators: name: Solis Valladares, Victor Hugo
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 320701
subject: Medical bacteriology
classificationCode: 420605
subject: Preventative health care
classificationCode: 420603
subject: Health promotion

description: A casi dos años del azote de la pandemia de la influenza AH1N1,se sospecha que la comunidad estudiantil universitaria debió adquirir hábitos higiénicos tan simples y comunes como lo es el lavado de manos antes de comer. Es de sospechar que cuando en el entorno social los semáforos epidemiológicos se han apagado, las costumbres adquiridas por la constante educación sanitaria, permanecen, sin embargo, en el presente informe de investigación, se comparan dos muestras de universitarios en un mismo escenario, pero en diferentes momentos.
Drop impact in spray cooling
Creators: name: Gao, Xuan
Publisher: name: University of British Columbia
Year: 2017

description: Spray cooling has enormous potential in addressing high-heat-flux thermal challenges in many cutting-edge technologies. In spray cooling, a flow of coolant drops is emitted from a spray nozzle and impacts a hot surface, which is covered by a flowing film. Heat transfers by convection from the surface to the liquid coolant, and the cooling performance is determined by the fluid dynamics of spray drops impacting the liquid film. The cooling mechanisms involved in spray cooling are still not clear, due to the lack of understanding of the heat transfer and fluid dynamics involved in the drop impact in spray cooling. The research work puts focus on the drop impact in spray cooling, which is carried out in four major steps. The first step is to study spray impact cooling experimentally with focus on the cooling effects of nozzle positioning parameters including spray height and inclination angle. The positioning parameters are shown to have effects on global and local cooling as the drop impact is affected when changing the spray positioning. The second step is to experimentally and theoretically investigate the fluid dynamics of a single liquid drop impacting a flowing film. The third step is to evaluate heat transfer enhancement during a single drop impact. The work carried out in the second and third steps forms a comprehensive study on the thermal-fluidics of single drop impact on a flowing film. The fourth step moves on to the heat transfer enhancement of drop train impacting flowing films. A drop train is formed when drops are generated in groups, and each group has a consistent number of drops. A drop generator is combined with a special setup to generate drop trains with varied impact frequencies including group frequency (the generation rate of groups) and single frequency (the generation rate of single drops in each group). The results relate the cooling enhancement of continuous drop impact to important impact parameters including drop number, velocity, and impact frequencies.
Characterization of vector diffraction-free beams
Creators: name: Wang, Ting-Ting
name: Yang, Shuang-Yan
name: Li, Chun-Fang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: It is observed that a constant unit vector denoted by $\mathbf I$ is needed to characterize a complete orthonormal set of vector diffraction-free beams. The previously found diffraction-free beams are shown to be included as special cases. The $\mathbf I$-dependence of the longitudinal component of diffraction-free beams is also discussed.
description: 8 pages and 2 figures
Nucleosomes protect DNA from DNA methylation in vivo and in vitro
Creators: name: Felle, Max
name: Hoffmeister, Helen
name: Rothammer, Julia
name: Fuchs, Andreas
name: Exler, Josef H.
name: Längst, Gernot
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: Gene Regulation, Chromatin and Epigenetics
subject: 570 Biowissenschaften, Biologie

description: Positioned nucleosomes limit the access of proteins to DNA. However, the impact of nucleosomes on DNA methylation in vitro and in vivo is poorly understood. Here, we performed a detailed analysis of nucleosome binding and nucleosomal DNA methylation by the de novo methyltransferases. We show that compared to linker DNA, nucleosomal DNA is largely devoid of CpG methylation. ATP-dependent chromatin remodelling frees nucleosomal CpG dinucleotides and renders the remodelled nucleosome a 2-fold better substrate for Dnmt3a methyltransferase compared to free DNA. These results reflect the situation in vivo, as quantification of nucleosomal DNA methylation levels in HeLa cells shows a 2-fold decrease of nucleosomal DNA methylation levels compared to linker DNA. Our findings suggest that nucleosomal positions are stably maintained in vivo and nucleosomal occupancy is a major determinant of global DNA methylation patterns in vivo.
title: Social innovation as a tool to create a more sustainable tourism: The example of the platform socialbnb
Creators: name: Haufschild, Alexander
name: Reiser, Dirk
Publisher: name: VIU Publications
Year: 2021
Subjects: subject: Tourism--Case studies
subject: Reservation systems
subject: Sustainable tourism
subject: socialbnb

description: This case study is about an innovative tourism booking platform, socialbnb, founded by students at the Cologne University in 2018. It describes a new accommodation platform that connects social and ecological NGOs with potential customers, especially youth travelers. The focus of the study lays on the development of the platform from the initial idea to the pilot phase to become a start-up. In general terms, the platform helps NGOs to earn an additional income by renting out accommodation on their premises to tourists. At the same time, it helps travelers to have an authentic experience. The case study can therefore be described as an example of a more inclusive business model that incorporates sustainability. Overall, the case study gives the background information of the entrepreneurs (from the beginning of the idea to the current status), the business opportunity that they saw in the trend towards more sustainable travel behavior, and how they put their idea into practice. It also details the benefits of such an approach.
Entanglement in nuclear quadrupole resonance
Creators: name: Furman, Gregory
name: Meerovich, Victor
name: Sokolovsky, Vladimir
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Entangled quantum states are an important element of quantum information techniques. We determine the requirements for states of quadrupolar nuclei with spins >1/2 to be entangled. It was shown that entanglement is achieved at low temperature by applying a magnetic field to a quadrupolar nuclei possess quadrupole moments, which interacts with the electricfield gradient produced by the charge distribution in their surroundings.
description: 9 pages, 5 figures
title: ArcGIS Parks and Gardens Information Model expanded: A solution for improving plant records data management
Creators: name: Healy, Jodi
Publisher: name: Electronic version published by Vancouver Island University
Year: 2021

description: Many gardens are managing plant records independent of each other in two distinct systems; a plant records database and mapping software. This causes unnecessary data entry duplication and consistency errors. BGBASE and IrisBG are among the most used database systems for recording plants, ArcGIS is a robust system for mapping gardens but is currently used by only 10% of gardens. The current Parks and Gardens Information Model for ArcGIS provides a free geodatabase structure for databasing and mapping gardens. The current model focuses on garden infrastructure with some capacity for storing plant collections data, the current capacity is not suitable as a single repository for plant records data. In order to expand the current model, a thematic analysis was performed, comparing the current model, BGBASE and IrisBG. Tables from all three systems were categorized by theme, with 21 themes identified across all three systems. Fields from system tables were used to identify sub-themes within each theme. Key functionality within each theme was also identified. A survey of the user community was performed to identify which themes and functionality are most important when documenting plant collections. The user community identified 11 themes and 6 functions as important. Implementation of these themes and functions was completed by adding subthemes absent from the current ArcGIS model and common to both BGBASE and IrisBG to the current ArcGIS model. A total of 10 new tables, 1 point feature class and 31 new relationships were added. Sample plant records data was migrated into the new model and the new model was validated by performing the 6 functions identified as important by the user community in the survey. The new model was able to perform all functions in a similar number of steps as they are performed in BGBASE and IrisBG. The new model has significant improvements in both data schema capacity and functionality and can be used as a single system for plant records, based on input from the user community. Uptake of this model by the user community will improve the efficiency, effectiveness and accuracy of plant records data.
Cognitive abilities and behavioral biases
Creators: name: Oechssler, J.
name: Roider, Andreas
name: Schmitz, Patrick
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: Behavioral finance; Biases; Cognitive abilities; Cognitive reflection test
subject: 330 Wirtschaft

description: We use a simple, three-item test for cognitive abilities to investigate whether established behavioral biases that play a prominent role in behavioral economics and finance are related to cognitive abilities. We find that higher test scores on the cognitive reflection test of Frederick [Frederick, S., 2005. Cognitive reflection and decision-making. Journal of Economic Perspectives 19, 25–42] indeed are correlated with lower incidences of the conjunction fallacy and conservatism in updating probabilities. Test scores are also significantly related to subjects’ time and risk preferences. Test scores have no influence on the amount of anchoring, although there is evidence of anchoring among all subjects. Even if incidences of most biases are lower for people with higher cognitive abilities, they still remain substantial.
Letters, John S. Edwards to Mary Louise Edwards Dodge, 1979
Creators: name: Edwards, John S.
name: Dodge, Mary Louise Edwards
name: Springs Historical Society
Publisher: name: Unknown
Year: 1979
Subjects: East Hampton
Springs
Edwards Family
Correspondence

description: This record shows a series of correspondence between john S. Edwards and Mary Louise Edwards Dodge in 1979. They discuss Springs history and Edwards family history.
description: This material was lent to the Long Island Collection by the Springs Historical Society Library for digitization purposes.
Density of states anomalies in multichannel quantum wires
Creators: name: Yoshioka, Hideo
name: Shima, Hiroyuki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We reformulate the Tomonaga--Luttinger liquid theory for quasi-one-dimensional Fermion systems with many subbands across the Fermi energy. Our theory enables us to obtain a rigorous expression of the local density of states (LDOS) for general multichannel quantum wires, describing how the power-law anomalies of LDOS depend on inter- and intra-subbands couplings as well as the Fermi velocity of each band. The resulting formula for the exponents is valid in the case of both bulk contact and edge contact, and thus plays a fundamental role in the physical properties of multicomponent Tomonaga--Luttinger liquid systems.
description: 8 pages, 1 figure
Erratum: “Magnitude and sign control of lithography-induced uniaxial anisotropy in ultrathin (Ga,Mn)As wires” [ Appl. Phys. Lett. 98, 083101 (2011) ]
Creators: name: Shiogai, Junichi
name: Schuh, Dieter
name: Wegscheider, Werner
name: Kohda, M.
name: Nitta, J.
name: Weiss, Dieter
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: gallium arsenide, III-V semiconductors, magnetic anisotropy, manganese compounds
subject: 530 Physik
subject: 99.10.Cd
subject: 75.30.Gw

description: Erratum zu http://epub.uni-regensburg.de/19890/
Atlas of Information Risk Maps
Creators: name: David, Scott
Publisher: name: University of Washington – Applied Physics Laboratory Information Risk Research Initiative (IRSIRI)
Year: 2021

description: Atlas of Information Risk Maps.
A Practical Guide to Navigating 800+ Categories of Networked Information System Risks and Cybersecurity/Privacy Threat Vectors and Vulnerabilities at and beyond Perimeter(s) 2.0
A Multi-Stakeholder Project Hosted by University of Washington – Applied Physics Laboratory Information Risk Research Initiative (IRSIRI)
Version 2021-7-4
Compiled by Scott L. David – IRSIRI Executive Director
Distributed under Creative Commons 3.0 License - with Attribution
Impact of the Optimum Routing and Least Overhead Routing Approaches on Minimum Hop Routes and Connected Dominating Sets in Mobile Ad Hoc Networks I
Creators: name: Meghanathan, Natarajan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Communication protocols for mobile ad hoc networks (MANETs) follow either an Optimum Routing Approach (ORA) or the Least Overhead Routing Approach (LORA): With ORA, protocols tend to determine and use the optimal communication structure at every time instant; whereas with LORA, a protocol tends to use a chosen communication structure as long as it exists. In this paper, we study the impact of the ORA and LORA strategies on minimum hop routes and minimum connected dominating sets (MCDS) in MANETs. Our primary hypothesis is that the LORA strategy could yield routes with a larger time-averaged hop count and MCDS node size when compared to the minimum hop count of routes and the node size of the MCDS determined using the ORA strategy. Our secondary hypothesis is that the impact of ORA vs. LORA also depends on how long the communication structure is being used. Our hypotheses are evaluated using extensive simulations under diverse conditions of network density, node mobility and mobility models such as the Random Waypoint model, City Section model and the Manhattan model. In the case of minimum hop routes, which exist for relatively a much longer time compared to the MCDS, the hop count of routes maintained according to LORA, even though not dramatically high, is appreciably larger (6-12%) than those maintained according to ORA; on the other hand, the number of nodes constituting a MCDS maintained according to LORA is only at most 6% larger than the node size of a MCDS maintained under the ORA strategy.
description: 17 pages, 19 figures, 6 tables
Transport properties of two laterally coupled vertical quantum dots in series with tunable inter-dot coupling
Creators: name: Hatano, T.
name: Amaha, S.
name: Kubo, T.
name: Teraoka, S.
name: Tokura, Y.
name: Gupta, J. A.
name: Austing, D. G.
name: Tarucha, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We describe the electronic properties of a double dot for which the lateral coupling between the two vertical dots can be controlled in-situ with a center gate voltage (Vc) and the current flows through the two dots in series. When Vc is large and positive, the two dots merge. As Vc is made less positive, two dots are formed whose coupling is reduced. We measure charging diagrams for positive and negative source-drain voltages in the weak coupling regime and observe current rectification due to the Pauli spin blockade when the hyperfine interaction between the electrons and the nuclei is suppressed.
description: 16 pages, 3 figures, accepted for Applied Physics Letters
Topological Homotopy Groups
Creators: name: Ghane, Helen
name: Hamed, Zainab
name: Mashayekhy, Behrooz
name: Mirebrahimi, Hanieh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 55Q05, 55U40, 54H11, 55P35

description: D. K. Biss (Topology and its Applications 124 (2002) 355-371) introduced the topological fundamental group and presented some interesting basic properties of the notion. In this article we intend to extend the above notion to homotopy groups and try to prove some similar basic properties of the topological homotopy groups. We also study more on the topology of the topological homotopy groups in order to find necessary and sufficient conditions for which the topology is discrete. Moreover, we show that studying topological homotopy groups may be more useful than topological fundamental groups.
description: 10 pages
Black sheep and walls of silence
Creators: name: Muehlheusser, G.
name: Roider, Andreas
Publisher: name: Universität Regensburg
Year: 2008
Subjects: subject: Teams; Misbehavior; Wall of silence; Whistle-blowing; Asymmetric information
subject: 330 Wirtschaft

description: In this paper we analyze the frequently observed phenomenon that (i) some members of a team (“black sheep”) exhibit behavior disliked by other (honest) team members, who (ii) nevertheless refrain from reporting such misbehavior to the authorities (they set up a “wall of silence”). Much cited examples include hospitals and police departments. In this paper, these features arise in equilibrium. An important ingredient of our model are benefits that agents receive when cooperating with each other in a team. Our results suggest that teams in which the importance of these benefits varies across team members are especially prone to the above-mentioned phenomenon.
Herding with and without Payoff Externalities - An Internet Experiment
Creators: name: Drehmann, M.
name: Oechssler, J.
name: Roider, Andreas
Publisher: name: Universität Regensburg
Year: 2007
Subjects: subject: 330 Wirtschaft

description: Most real world situations that are susceptible to herding are also characterized by direct payoff externalities. Yet, the bulk of the theoretical and experimental literature on herding has focused on pure informational externalities. In this paper, we experimentally investigate the effects of several different forms of payoff externalities (e.g., network effects, first-mover advantage, etc.) in a standard information-based herding model. Our results are based on an internet experiment with more than 6000 subjects, of which more than 2400 participated in the treatments reported here, including a subsample of 267 consultants from an international consulting firm. We also replicate and review earlier cascade experiments. Finally, we study reputation effects (i.e., the influence of success models) in the context of herding.
Edge effects in graphene nanostructures: Semiclassical theory of spectral fluctuations and quantum transport
Creators: name: Wurm, Jürgen
name: Richter, Klaus
name: Adagideli, İnanç
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: graphene, semiclassical physics, conductance, weak localization, universal conductance fluctuations, density of states
subject: 530 Physik
subject: 72.80.Vp, 73.22.Pr, 05.45.Mt, 73.23.Ad

description: We investigate the effect of different edge types on the statistical properties of both the energy spectrum of closed graphene billiards and the conductance of open graphene cavities in the semiclassical limit. To this end, we use the semiclassical Green's function for ballistic graphene flakes that we have derived in Reference 1. First we study the spectral two point correlation function, or more precisely its Fourier transform the spectral form factor, starting from the graphene version of Gutzwiller's trace formula for the oscillating part of the density of states. We calculate the two leading order contributions to the spectral form factor, paying particular attention to the influence of the edge characteristics of the system. Then we consider transport properties of open graphene cavities. We derive generic analytical expressions for the classical conductance, the weak localization correction, the size of the universal conductance fluctuations and the shot noise power of a ballistic graphene cavity. Again we focus on the effects of the edge structure. For both, the conductance and the spectral form factor, we find that edge induced pseudospin interference affects the results significantly. In particular intervalley coupling mediated through scattering from armchair edges is the key mechanism that governs the coherent quantum interference effects in ballistic graphene cavities.
Stolen manhood? : German-Jewish masculinities in the Third Reich, 1933-1945
Creators: name: Huebel, Sebastian
Publisher: name: University of British Columbia
Year: 2017

description: When the Nazis came to power in Germany, they used various strategies to expel German Jews from social, cultural and economic life. My dissertation focuses on gendered forms of discrimination which had impacts on Jewish masculine identity. I am asking how Jewish men experienced these challenges and the undermining of their self-understandings as men in the Third Reich. How did Jewish men adhere to pre-established gender norms and practices such as the role of serving as the providers and protectors of their families? How did Jewish men maintain their sense of being patriotic German war veterans and members of the national community? And finally, how did Jewish men react to being exposed to the physical assaults and violence that was overwhelmingly directed against them in prewar Germany? These central questions form the basis of my study of Jewish masculinities in the Third Reich. I argue that Jewish men’s gender identities, intersecting with categories of ethnicity, race, class and age, underwent a profound process of marginalization that undermined their accustomed ways of performing masculinity; yet at the same time, in their attempts to sustain their conception of masculinity they maintained sufficient agency and developed coping strategies to prevent their full-scale emasculation. Jewish men adapted to their persecution by finding alternative employment, assuming an increased presence in the domestic sphere as fathers and husbands; maintaining an emotional spiritual-belonging to Germany; resisting their sexual-racial classification as racial defilers; minimizing physical victimization in concentration camps and the public by embodying military virtues like strength and discipline; and finally developing gendered survival strategies living as “illegals” in the underground during the years of the Holocaust. In their totality of perceptions, reactions and often overlapping coping strategies, Jewish men comprised a heterogeneous group of marginalized men who with their families strove to have normal lives in Nazi Germany. [An errata to this thesis/dissertation was made available on 2018-04-03.]
Positive-Digital-Communities Resources to support safe and effective communication in digital spaces (OfS funded project).docx
Creators: name: Hartley, Alison
Publisher: name: National Teaching Repository
Year: 2023
Subjects: classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy
classificationCode: 390114
subject: Vocational education and training curriculum and pedagogy
classificationCode: 390115
subject: Work integrated learning (incl. internships)
classificationCode: 390113
subject: Science, technology and engineering curriculum and pedagogy
classificationCode: 390112
subject: Religion curriculum and pedagogy
classificationCode: 390111
subject: Physical education and development curriculum and pedagogy
classificationCode: 390109
subject: Mathematics and numeracy curriculum and pedagogy
classificationCode: 390108
subject: LOTE, ESL and TESOL curriculum and pedagogy
classificationCode: 390106
subject: Geography education curriculum and pedagogy
classificationCode: 390107
subject: Humanities and social sciences curriculum and pedagogy (excl. economics, business and management)
classificationCode: 390105
subject: Environmental education curriculum and pedagogy
classificationCode: 390104
subject: English and literacy curriculum and pedagogy (excl. LOTE, ESL and TESOL)
classificationCode: 390103
subject: Economics, business and management curriculum and pedagogy
classificationCode: 390102
subject: Curriculum and pedagogy theory and development
classificationCode: 390199
subject: Curriculum and pedagogy not elsewhere classified
classificationCode: 390101
subject: Creative arts, media and communication curriculum and pedagogy
classificationCode: 399999
subject: Other education not elsewhere classified

description: This resources hosts links to a range of outputs co-produced with students at the University of Bradford relating to the safe and effective use of digital communities between student peers.

The outputs are related to a wider Office for Students Project 'Positive Digital Practices'
Herding and Contrarian Behavior in Financial Markets: An Internet Experiment
Creators: name: Drehmann, M.
name: Oechssler, J.
name: Roider, Andreas
Publisher: name: Universität Regensburg
Year: 2005
Subjects: subject: 330 Wirtschaft

description: We report results of an Internet experiment designed to test the theory of informational cascades in financial markets (Christopher Avery and Peter Zemsky, 1998). More than 6,400 subjects, including a subsample of 267 consultants from an international consulting firm, participated in the experiment. We find that the presence of a flexible market price prevents herding. The presence of contrarian behavior distorts prices, however, and even after 20 decisions, convergence to the fundamental value is rare. We also report some interesting differences with respect to subjects' fields of study. Reassuringly, the behavior of the consultants turns out to be not significantly different from that of the remaining subjects.
The role of MALT1 in T cell immunity
Creators: name: Kang, Sohyeong
Publisher: name: University of British Columbia
Year: 2017

description: Individuals with combined immunodeficiency exhibit normal frequencies of T and B cells but suffer from severe recurrent infections. A child admitted to BCCH displayed a novel clinical presentation of combined immunodeficiency with immune dysregulation. The patient was found to inherit homozygous missense mutations in the MALT1 gene from her consanguineous parents. MALT1 is important in activating the NF-kB pathway upon TCR stimulation. MALT1 functions by two different mechanisms: (1) as a scaffolding molecule bringing CARD11 and BCL-10 to form the CBM signalosome complex and (2) as a caspase-like protease cleaving substrates to regulate NF-kB signaling. Studies in Malt1¯/¯ mice have revealed weakened T cell immunity whereas mice expressing MALT1 lacking paracaspase activity are prone to fetal autoimmunity. In addition, patients with MALT1 mutations shared similar clinical characteristics, experiencing chronic infections and gastrointestinal inflammation. Together, these findings raise questions regarding the nature of our patient’s mutant MALT1 protein and the role it plays in her pro-inflammatory phenotype. Our data have shown that MALT1 is essential for IL-2 production in CD4 T cells despite the dispensable role in regulatory T cell development. In addition, we demonstrate that MALT1 plays a crucial role in effector function of Th1 and Th17 cells. Analysis of the patient’s MALT1 scaffolding and paracaspase activity revealed that the patient’s MALT1 mutations act as a hypomorphic allele. Unlike our patient, Malt1¯/¯ mice do not exhibit constitutive immune activation and severe intestinal inflammation. A limited pathogen exposure may be responsible for the discrepancy in phenotype of the patient and Malt1¯/¯ mice. Hence, we introduced LCMV pathogen to Malt1¯/¯ mice and assessed the role of MALT1 in anti-viral T cell immune responses. Malt1¯/¯ mice exhibited severely impaired effector function of viral-specific CD4 T cells. However, we found that MALT1 is dispensable for the generation and effector function of viral-specific CD8 T cells. Further, MALT1 alters the expression of T cell differentiation markers, whereas it does not modulate activation and inhibitory receptors upon viral infection. Collectively, our studies demonstrate that MALT1 plays a pivotal role in CD4 T cell immune responses, yet is not required for CD8 T cell anti-viral immunity.
Delegation, Risk, and Project Scope
Creators: name: Roider, Andreas
Publisher: name: Universität Regensburg
Year: 2009
Subjects: subject: 330 Wirtschaft

description: This paper studies a partial-contracting model where an agent may provide effort to increase a project's scope before some later (operative) decisions have to be taken. Consistent with existing empirical evidence, we find a positive relationship between exogenous risk and delegation. That is, only if the exogenous risk is sufficiently large may the risk-neutral principal prefer to delegate authority over decisions to the risk-averse agent. Intuitively, for incentive reasons, the principal may optimally want to allow the agent to reduce his risk exposure. Nevertheless, even endogenous risk may be higher when the risk-averse agent has control.
Virtual Machines and Networks - Installation, Performance Study, Advantages and Virtualization Options
Creators: name: Ali, Ishtiaq
name: Meghanathan, Natarajan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The interest in virtualization has been growing rapidly in the IT industry because of inherent benefits like better resource utilization and ease of system manageability. The experimentation and use of virtualization as well as the simultaneous deployment of virtual software are increasingly getting popular and in use by educational institutions for research and teaching. This paper stresses on the potential advantages associated with virtualization and the use of virtual machines for scenarios, which cannot be easily implemented and/or studied in a traditional academic network environment, but need to be explored and experimented by students to meet the raising needs and knowledge-base demanded by the IT industry. In this context, we discuss various aspects of virtualization - starting from the working principle of virtual machines, installation procedure for a virtual guest operating system on a physical host operating system, virtualization options and a performance study measuring the throughput obtained on a network of virtual machines and physical host machines. In addition, the paper extensively evaluates the use of virtual machines and virtual networks in an academic environment and also specifically discusses sample projects on network security, which may not be feasible enough to be conducted in a physical network of personal computers; but could be conducted only using virtual machines.
An electron jet pump: The Venturi effect of a Fermi liquid
Creators: name: Taubert, D.
name: Schinner, G. J.
name: Tomaras, C.
name: Tranitz, Hans-Peter
name: Wegscheider, Werner
name: Ludwig, S.
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: aluminium compounds, electron-electron scattering, Fermi level, Fermi liquid, gallium arsenide, III-V semiconductors, ohmic contacts, pumps, semiconductor devices
subject: 530 Physik
subject: 85.30.-z

description: A three-terminal device based upon a two-dimensional electron system is investigated in the regime of nonequilibrium transport. Excited electrons scatter with the cold Fermi sea and transfer energy and momentum to other electrons. A geometry analogous to a water jet pump is used to create a jet pump for electrons. Because of its phenomenological similarity we name the observed behavior the “electronic Venturi effect.”