cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Double quantum dot with tunable coupling in an enhancement-mode silicon metal-oxide semiconductor device with lateral geometry
Creators: name: Tracy, L. A.
name: Nordberg, E. P.
name: Young, R. W.
name: Pinilla, C. Borras
name: Stalford, H. L.
name: Eyck, G. A. Ten
name: Eng, K.
name: Childs, K. D.
name: Stevens, J.
name: Lilly, M. P.
name: Eriksson, M. A.
name: Carroll, M. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present transport measurements of a tunable silicon metal-oxide-semiconductor double quantum dot device with lateral geometry. Experimentally extracted gate-to-dot capacitances show that the device is largely symmetric under the gate voltages applied. Intriguingly, these gate voltages themselves are not symmetric. Comparison with numerical simulations indicates that the applied gate voltages serve to offset an intrinsic asymmetry in the physical device. We also show a transition from a large single dot to two well isolated coupled dots, where the central gate of the device is used to controllably tune the interdot coupling.
description: 4 pages, 3 figures, to be published in Applied Physics Letters
Spin dynamics in p-doped semiconductor nanostructures subject to a magnetic field tilted from the Voigt geometry
Creators: name: Korzekwa, K.
name: Gradl, Christian
name: Kugler, Michael
name: Furthmeier, Stephan
name: Griesbeck, Michael
name: Hirmer, Michael
name: Schuh, Dieter
name: Wegscheider, Werner
name: Kuhn, T.
name: Schueller, Christian
name: Korn, Tobias
name: Machnikowski, Pawel
Publisher: name: Universität Regensburg
Year: 2013
Subjects: subject: 530 Physik
subject: 78.67.De, 78.55.Cr, 78.47.D−

description: We develop a theoretical description of the spin dynamics of resident holes in a p-doped semiconductor quantum well (QW) subject to a magnetic field slightly tilted from the Voigt geometry. We find the expressions for the signals measured in time-resolved Faraday rotation (TRFR) and resonant spin amplification (RSA) experiments and study their behavior for a range of system parameters. We find that an inversion of the RSA peaks can occur for long hole spin dephasing times and tilted magnetic fields. We verify the validity of our theoretical findings by performing a series of TRFR and RSA experiments on a p-modulation doped GaAs/Al0.3Ga0.7As single QW and showing that our model can reproduce experimentally observed signals.
Van der Waals interactions in selected allotropes of phosphorous
Creators: name: Bachhuber, Frederik
name: van Appen, Jörg
name: Dronskowski, Richard
name: Pfitzner, Arno
name: Nilges, Tom
name: Schmidt, P.
name: Weihrich, Richard
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: allotropes; band structure; DFT; phosphorous; stability; van der Waals
subject: 540 Chemie

description: Selected allotropes of phosphorus are investigated by different levels of density functional theory (DFT) calculations to evaluate the relative stability orders with a special focus on the role of van der Waals interactions. Phosphorus is an excellent reference system with a large number of allotropes. Starting from low-dimensional molecular (0D, white P) and polymer structures (1D, P nanorods) to layered (2D, black P) and tubular structures (2D and 3D, crystalline forms of red P), covalent structure motifs are interconnected by van der Waals interactions. They are a key factor for the correct energetic description of all P allotropes. A comparative study is carried out within the local density approximation (LDA) and the generalized gradient approximation (GGA), with and without implementation of a dispersion correction by Grimme (GGA-D2). Our intention is to achieve a reasonable agreement of our calculations with experimental data, the plausibility of energy values, and the treatment of long-range interactions. The effect of van der Waals interactions is exemplified for the interlayer distances of black phosphorous and its electronic structure.
Supplementary material: “Viscous froth model applied to the motion and topological transformations of two-dimensional bubbles in a channel: Three-bubble case”; Numerical algorithms
Creators: name: Torres-Ulloa, C.
name: Grassia, P.
Publisher: name: The Royal Society
Year: 2022
Subjects: subject: 91504 Fluidisation and Fluid Mechanics
subject: FOS: Other engineering and technologies
subject: 10299 Applied Mathematics not elsewhere classified
subject: FOS: Mathematics
subject: 80110 Simulation and Modelling
subject: FOS: Computer and information sciences

description: Additional details, deductions, results, and discussions are presented in this document; A file with the numerical procedure to obtain the results is available along this submission
Viennese planning culture : understanding change and continuity through the Hauptbahnhof
Creators: name: Reiss, Veronica Raffaela Sophie
Publisher: name: University of British Columbia
Year: 2017

description: Today, cities across the globe face a multitude of similar challenges – climate change, new disruptive technologies, new conceptions of both labour and capital, and mass migration, among others; simultaneously, planning scholars are continually acknowledging the diversity of both the conception and practice of planning around the world. As such, the concept of planning cultures has grown in recognition and importance. While the literature around planning cultures grows, few area specific studies have been completed. This thesis seeks to contribute to the understanding of the planning culture of Vienna, Austria, through an exploration of the history of urban planning in Vienna and through a contemporary case study of the planning of the Vienna Hauptbahnhof project, the recently completed central train station. This thesis seeks to expand the understanding of planning processes, practices, and outcomes in Vienna, a city world renowned for its affordable and social housing, as well as for its high quality of life.
A Large-Scale Community Structure Analysis In Facebook
Creators: name: Ferrara, Emilio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: H.2.8; D.2.8
subject: 91D30, 05C82, 68R10, 90B10, 90C35

description: Understanding social dynamics that govern human phenomena, such as communications and social relationships is a major problem in current computational social sciences. In particular, given the unprecedented success of online social networks (OSNs), in this paper we are concerned with the analysis of aggregation patterns and social dynamics occurring among users of the largest OSN as the date: Facebook. In detail, we discuss the mesoscopic features of the community structure of this network, considering the perspective of the communities, which has not yet been studied on such a large scale. To this purpose, we acquired a sample of this network containing millions of users and their social relationships; then, we unveiled the communities representing the aggregation units among which users gather and interact; finally, we analyzed the statistical features of such a network of communities, discovering and characterizing some specific organization patterns followed by individuals interacting in online social networks, that emerge considering different sampling techniques and clustering methodologies. This study provides some clues of the tendency of individuals to establish social interactions in online social networks that eventually contribute to building a well-connected social structure, and opens space for further social studies.
description: 30 pages, 13 Figures - Published on: EPJ Data Science, 1:9, 2012 - open access at: http://www.epjdatascience.com/content/1/1/9
Reusable Defense Components for Online Reputation Systems
Creators: name: Sänger, Johannes
name: Richthammer, Christian
name: Rösch, Artur
name: Pernul, Günther
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Trust, online reputation, reputation systems, attacks, taxonomy, components, reusability
subject: 004 Informatik

description: Attacks on trust and reputation systems (TRS) as well as defense strategies against certain attacks are the subject of many research papers. Although proposing valuable ideas, they all exhibit at least one of the following major shortcomings. Firstly, many researchers design defense mechanisms from scratch and without reusing approved ideas. Secondly, most proposals are limited to naming and theoretically describing the defense mechanisms. Another issue is the inconsistent denomination of attacks with similar characteristics among different researchers. To address these shortcomings, we propose a novel taxonomy of attacks on TRS focusing on their general characteristics and symptomatology. We use this taxonomy to assign reusable, clearly described and practically implemented components to different classes of attacks. With this work, we aim to provide a basis for TRS designers to experiment with numerous defense mechanisms and to build more robust systems in the end.
"Putkisalon kartano" farm, Rantasalmi, Finland - Esittelyssä Putkisalon kartano
Creators: name: Den Herder
name: , Michael
Publisher: name: Zenodo
Year: 2018
Subjects: diversification
sheep breeding
cattle
horses
wood pastures
silvopastoralism
maatalous monipuolistaminen
maatila monipuolistaminen
metsälaidun
paimenkoira
lampaat
lammastuotteet
lehmät
hevoset

description: Putkisalon kartano sijaitsee 300 km Helsingistä pohjoiseen ja sen monipuolisesta toiminnasta vastaavat Susanna Nuutinen ja Mikael Westerstråhle. Tila tuottaa jalostuseläimiä, karitsanlihaa ja viljaa. Tilalla on myös metsää ja laajoja monimuotoisia perinnelaitumia. - The "Putkisalo kartano" farm is located 300 km north of Helsinki in the Finnish Lake District. The farm is managed by the farmers Susanna Nuutinen and Mikael Westerstråhle. It is a very diverse farm. The farm produces sheep for breeding and meat production, lamb meat and cereals. The farm also has some forest for timber production and manages traditional rural landscapes.
Reusable Components for Online Reputation Systems
Creators: name: Sänger, Johannes
name: Richthammer, Christian
name: Pernul, Günther
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: Trust; Reputation; Reusability; Trust pattern
subject: 004 Informatik

description: Reputation systems have been extensively explored in various disciplines and application areas. A problem in this context is that the computation engines applied by most reputation systems available are designed from scratch and rarely consider well established concepts and achievements made by others. Thus, approved models and promising approaches may get lost in the shuffle. In this work, we aim to foster reuse in respect of trust and reputation systems by providing a hierarchical component taxonomy of computation engines which serves as a natural framework for the design of new reputation systems. In order to assist the design process we, furthermore, provide a component repository that contains design knowledge on both a conceptual and an implementation level. To evaluate our approach we conduct a descriptive scenario-based analysis which shows that it has an obvious utility from a practical point of view. Matching the identified components and the properties of trust introduced in literature, we finally show which properties of trust are widely covered by common models and which aspects have only rarely been considered so far.
The ant Cardiocondyla elegans as host of the enigmatic endoparasitic fungus Myrmicinosporidium durum
Creators: name: Schrempf, Alexandra
name: Giehr, Julia
name: Heinze, Jürgen
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 590 Tiere (Zoologie)

description: Data on host species and the distribution of the endoparasitic fungus Myrmicinosporidium durum increased continuously in recent decades. Here, we add the ant Cardiocondyla elegans as new host species. Colonies of the monogynous species were found infested in the region of Languedoc-Roussillon (South France). Samples from the nest indicate high infection rates. All castes and sexes were infected by the spores. Variations of infection rates between sampling methods and species are discussed.
How is a family of sedentary marine fishes shaped by its habitats, prey, and predators?
Creators: name: Manning, Clayton Garin
Publisher: name: University of British Columbia
Year: 2017

description: Overall, this thesis expands on our ecological understanding of a group of biologically diverse marine fishes by investigating how they are shaped by their habitats, prey, and predators. In my first data chapter, I used the seahorse Hippocampus whitei as a case study for investigating the ecological correlates of syngnathid abundance and distributions. Expanding on research that had looked at how either their habitats, prey, or predators affected their populations, I considered all three components in a single holistic approach. I investigated these correlations at two scales: among different seagrass beds (200-6000 m apart), and within a single seagrass bed (<100 m in size). I found that habitat, prey, and predator variables all correlated with seahorse density or height distributions to varying extents, depending on the scale of the study. Total predators was negatively associated with seahorse density across seagrass beds, the only ecological variable that was correlated with seahorses across beds. Within seagrass beds, seahorse locations correlated with greater depth, denser seagrass, more prey types, and fewer predators. In my second data chapter, I reviewed the diets and feeding behaviour of syngnathids, bringing together, summarizing, and providing new insights on a large amount of fragmented information on the topic. I answered three central questions. 1. How do syngnathids eat? 2. How does feeding and diet vary across a morphogically diverse family of fishes? 3. How does feeding and diet vary across a family of fishes that lives in a three-dimensional space? I answered question 1 by summarizing a number of different studies on the morphologies and kinematics of syngnathid feeding events. I answered questions 2 and 3 using a meta-analysis on syngnathid diets found the literature. Overall, I found there to be a large amount of variation in syngnathid diets that I hypothesize is caused by large differences in prey availability. Of the explained variation, I found their diets were most strongly correlated with their relative snout lengths and gape sizes. These feeding morphologies also had high phylogenetic signal, suggesting that dietary differences across genera were largely explained by how they differed with respect to these morphologies.
title: Visualizing GAN-based Extreme Learned Image Compression
Creators: name: Habermayr, Daniel
Publisher: name: Hochschule für Angewandte Wissenschaften Landshut
Year: 2022

description: Systems based on Artificial Intelligence are thrusting their way into evermore fields of application, with the potential to globally revolutionize working and living environments over coming decades. Especially in highly sensitive use-cases with lots of responsibility, like medicine, law enforcement or military, it is of utmost importance to be able to fully comprehend why and how an artificially intelligent program acts. The field of Explainable AI addresses just this task, developing techniques to gain insight into otherwise hard to interpret machine learning models. Knowledge gained through these explanations can also be used to debug and improve any existing models from all kinds of application fields. In this thesis, several appropriate Explainable AI techniques are used to investigate a Deep Compression System for images based on Generative Adversarial Networks.
Suzaku Observations of the Great Annihilator and the Surrounding Diffuse Emissions
Creators: name: Nakashima, Shinya
name: Nobukawa, Masayoshi
name: Tsuru, Takeshi Go
name: Koyama, Katsuji
name: Uchiyama, Hideki
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report the Suzaku observation of 1E 1740.7-2942, a black hole candidate called the "Great Annihilator" (GA). The high-quality spectrum of Suzaku provides the severest constraints on the parameters of the GA. Two clumpy structures are found around the GA in the line images of FeI Kalpha at 6.4 keV and SXV Kalpha at 2.45 keV. One clump named M359.23-0.04 exhibits the 6.4-keV line with an equivalent width of ~ 1.2 keV, and is associated with a molecular cloud in the radio CS(J=1-0) map. Thus the 6.4-keV line from M359.23-0.04 is likely due to X-ray fluorescence irradiated by an external X-ray source. The irradiating X-rays would be either the past flare of Sagittarius A* or the bright nearby source, the GA. The other clump named G359.12-0.05 is associated with the radio supernova remnant candidate G359.07-0.02. We therefore propose that G359.12-0.05 is an X-ray counterpart of G359.07-0.02. G359.12-0.05 has a thin thermal plasma spectrum with a temperature of kT ~ 0.9 keV. The plasma parameters of G359.12-0.05 are consistent with those of a single supernova remnant in the Galactic center region.
description: 10 pages, 8 figures, accepted for publication in PASJ (Vol.62, No.4)
Van der Waals interactions in selected allotropes of phosphorus
Creators: name: Bachhuber, Frederik
name: Appen, Joerg von
name: Dronskowski, Richard
name: Schmidt, Peer
name: Nilges, Tom
name: Pfitzner, Arno
name: Weihrich, Richard
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: allotropes; band structure; DFT; phosphorous; stability; van der Waals
subject: 540 Chemie

description: Selected allotropes of phosphorus are investigated by different levels of density functional theory (DFT) calculations to evaluate the relative stability orders with a special focus on the role of van der Waals interactions. Phosphorus is an excellent reference system with a large number of allotropes. Starting from low-dimensional molecular (0D, white P) and polymer structures (1D, P nanorods) to layered (2D, black P) and tubular structures (2D and 3D, crystalline forms of red P), covalent structure motifs are interconnected by van der Waals interactions. They are a key factor for the correct energetic description of all P allotropes. A comparative study is carried out within the local density approximation (LDA) and the generalized gradient approximation (GGA), with and without implementation of a dispersion correction by Grimme (GGA-D2). Our intention is to achieve a reasonable agreement of our calculations with experimental data, the plausibility of energy values, and the treatment of long-range interactions. The effect of van der Waals interactions is exemplified for the interlayer distances of black phosphorous and its electronic structure.
Emergence of spin-orbit fields in magnetotransport of quasi-two-dimensional iron on gallium arsenide
Creators: name: Hupfauer, Thomas
name: Matos-Abiague, A.
name: Gmitra, Martin
name: Schiller, Fritz
name: Loher, Josef
name: Bougeard, Dominique
name: Back, Christian H.
name: Fabian, Jaroslav
name: Weiss, Dieter
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik

description: The desire for higher information capacities drives the components of electronic devices to ever smaller dimensions so that device properties are determined increasingly more by interfaces than by the bulk structure of the constituent materials. Spintronic devices, especially, benefit from the presence of interfaces—the reduced structural symmetry creates emergent spin–orbit fields that offer novel possibilities to control device functionalities. But where does the bulk end, and the interface begin? Here we trace the interface-to-bulk transition, and follow the emergence of the interfacial spin–orbit fields, in the conducting states of a few monolayers of iron on top of gallium arsenide. We observe the transition from the interface- to bulk-induced lateral crystalline magnetoanisotropy, each having a characteristic symmetry pattern, as the epitaxially grown iron channel increases from four to eight monolayers. Setting the upper limit on the width of the interface-imprinted conducting channel is an important step towards an active control of interfacial spin–orbit fields.
A new multiparametric MRI protocol for diagnosis of prostate cancer
Creators: name: Sabouri, Shirin
Publisher: name: University of British Columbia
Year: 2017

description: In this thesis, a new magnetic resonance imaging (MRI) quantitative T2 mapping technique, called Luminal water imaging (LWI), has been developed and used for non-invasive detection and grading of prostatic tumours. Using this technique, we measured what we hypothesized to be the fractional amount of water content of luminal spaces in prostate, and called it Luminal Water Fraction, LWF. Based on the differences in tissue composition and fractional amount of luminal space between malignant and normal prostatic tissues and between tumors of different grades, we hypothesized that the measurements of LWF could be used for the detection and grading of prostatic tumours. To verify these hypotheses, we performed two patient studies in which we compared MR measurements of LWI with whole-mount histology. In the first study, we evaluated the correlation between LWF and the percentage area of luminal space in the prostatic tissue. The results of this study demonstrated that LWF is significantly and strongly correlated with the percentage area of luminal space in the prostatic tissue. In the second study, we investigated the feasibility of LWI in the detection and grading of prostate cancer. The results of this study showed that LWI provides high accuracy both in the detection and grading of prostatic tumours. After verifying our hypotheses, we performed a detailed comparison between the diagnostic accuracy of LWI and the more established MRI techniques: Dynamic Contrast-Enhanced (DCE) and Diffusion-Weighted MRI (DW-MRI). The results of this pilot study showed that LWI alone performs better than DCE, DW-MRI, or their combination, in the detection of prostatic tumours and also in correlation with GS. Based on the results of this study, we proposed a guideline for making a more efficient, abbreviated multi-parametric MRI protocol for the diagnosis of prostate cancer. Finally, as a side project, we explored some potential areas of improvement in DCE-MRI by investigating the impact of temporal resolution on the accuracy of DCE-MRI in detection of prostatic tumours. Our results showed that within a certain range of temporal resolutions, the diagnostic accuracy of DCE-MRI would be independent of the temporal resolution.
MPEC 2023-J06 : 2023 HM7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HM7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Using Activated Transport in Parallel Nanowires for Energy Harvesting and Hot Spot Cooling
Creators: name: Bosisio, Riccardo
name: Gorini, Cosimo
name: Fleury, Geneviève
name: Pichard, Jean-Louis
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik

description: We study arrays of disordered nanowires arranged in parallel and in contact between two metallic electrodes. If one adjusts with a back gate the chemical potential to one edge of the impurity band, these arrays open promising perspectives for energy harvesting and heat management in a temperature range where the electrons propagate inside the nanowires by phonon assisted hops between localized states. On one hand, the thermopower self-averages to large values while the electrical conductance scales with the number of nanowires. This gives large power factors and suitable figures of merit for the thermoelectric conversion. On the other hand, the phonons are mainly absorbed near one electrode and emitted near the other. This phenomenon can be exploited for cooling hot spots in electronic circuits.
Influenced of Fe buffer thickness on the crystalline quality and the transport properties of Fe/Ba(Fe1-xCox)2As2 bilayers
Creators: name: Iida, K.
name: Haindl, S.
name: Thersleff, T.
name: Haenishc, J.
name: Kurth, F.
name: Kidszun, M.
name: Huehne, R.
name: Moench, I.
name: Schultz, L.
name: Holzapfel, B.
name: Heller, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The implementation of an Fe buffer layer is a promising way to obtain epitaxial growth of Co-doped BaFe2As2 (Ba-122). However, the crystalline quality and the superconducting properties of Co-doped Ba-122 are influenced by the Fe buffer layer thickness, dFe. The well-textured growth of the Fe/Ba-122 bilayer with dFe = 15 nm results in a high Jc of 0.45 MAcm$^{-2}$ at 12 K in self-field, whereas a low Jc value of 61000 Acm$^{-2}$ is recorded for the bilayer with dFe = 4 nm at the corresponding reduced temperature due to the presence of grain boundaries.
Orthogonal Cherenkov sound in spin-orbit coupled systems
Creators: name: Smirnov, Sergey
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: spin-orbit interaction, Rashba, Dresselhaus, Cherenkov acoustic effect
subject: 530 Physik
subject: 71.70.Ej
subject: 63.20.kd
subject: 41.60.Bq
subject: 43.35.+d

description: Conventionally the Cherenkov sound is governed by orbital degrees of freedom and is excited by supersonic particles. Additionally, it usually has a forward nature with a conic geometry known as the Cherenkov cone whose axis is oriented along the supersonic particle motion. Here we predict Cherenkov sound of a unique nature entirely resulting from the electronic spin degree of freedom and demonstrate a fundamentally distinct Cherenkov effect originating from essentially subsonic electrons in two-dimensional gases with both Bychkov-Rashba and Dresselhaus spin-orbit interactions. Specifically, we show that the axis of the conventional forward Cherenkov cone gets a nontrivial quarter-turn and at the same time the sound distribution strongly localizes around this rotated axis being now orthogonal to the subsonic particle motion. Apart from its fundamentally appealing nature, the orthogonal Cherenkov sound could have applications in planar semiconductor technology combining spin and acoustic phenomena to develop, e.g., acoustic amplifiers or sound sources with a flexible spin dependent orientation of the sound propagation.
Chromatin remodelers: from function to dysfunction
Creators: name: Längst, Gernot
name: Manelyte, Laura
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: chromatin remodeler; cancer; search mechanism; arrest model; non-coding RNA
subject: 570 Biowissenschaften, Biologie

description: Chromatin remodelers are key players in the regulation of chromatin accessibility and nucleosome positioning on the eukaryotic DNA, thereby essential for all DNA dependent biological processes. Thus, it is not surprising that upon of deregulation of those molecular machines healthy cells can turn into cancerous cells. Even though the remodeling enzymes are very abundant and a multitude of different enzymes and chromatin remodeling complexes exist in the cell, the particular remodeling complex with its specific nucleosome positioning features must be at the right place at the right time in order to ensure the proper regulation of the DNA dependent processes. To achieve this, chromatin remodeling complexes harbor protein domains that specifically read chromatin targeting signals, such as histone modifications, DNA sequence/structure, non-coding RNAs, histone variants or DNA bound interacting proteins. Recent studies reveal the interaction between non-coding RNAs and chromatin remodeling complexes showing importance of RNA in remodeling enzyme targeting, scaffolding and regulation. In this review, we summarize current understanding of chromatin remodeling enzyme targeting to chromatin and their role in cancer development.
Ensemble Empirical Mode Decomposition Analysis of EEG Data Collected during a Contour Integration Task
Creators: name: Lang, Elmar
name: Al-Subari, Karema
name: Al-Baddai, Saad
name: Tomé, Ana Maria
name: Volberg, Gregor
name: Hammwöhner, Rainer
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 570 Biowissenschaften, Biologie

description: We discuss a data-driven analysis of EEG data recorded during a combined EEG/fMRI study of visual processing during a contour integration task. The analysis is based on an ensemble empirical mode decomposition (EEMD) and discusses characteristic features of event related modes (ERMs) resulting from the decomposition. We identify clear differences in certain ERMs in response to contour vs noncontour Gabor stimuli mainly for response amplitudes peaking around 100 [ms] (called P100) and 200 [ms] (called N200) after stimulus onset, respectively. We observe early P100 and N200 responses at electrodes located in the occipital area of the brain, while late P100 and N200 responses appear at electrodes located in frontal brain areas. Signals at electrodes in central brain areas show bimodal early/late response signatures in certain ERMs. Head topographies clearly localize statistically significant response differences to both stimulus conditions. Our findings provide an independent proof of recent models which suggest that contour integration depends on distributed network activity within the brain.
ALLE ORIGINI DEL LIBRO �DELLA TUTELA DEI DIRITTI�: �STORIA ESTERNA�, NATURA ED ASCENDENZE LEGISLATIVE, DOTTRINALI E GIURISPRUDENZIALI DEL VI LIBRO DEL VIGENTE CODICE CIVILE
Creators: name: SANDONA', ALAN
Publisher: name: Universit� degli Studi di Milano
Year: 2012

description: The contribution is devoted to the study of Book VI of the Italian Civil Code of 1942,investigating, in particular, the legislative policy choices, the peculiarity and the legal ideology that the legislator wanted to express with it, and checking whether they have found in the book "Della tutela dei diritti", as it was made, authentic expression. In light of the objectives it seemed useful to articulate the research along two main lines, autonomous and complementary at the same time, so that in case of convergence of their results, their synthesis might lead to stronger results. First we tried to reconstruct, in a more detailed manner possible, "external history" of the book "Della tutela dei diritti" on the assumption that the reconstruction of the events that formed the complex historical phenomenon that was the codification of italian private law may help to extrapolate these trends and those guideline that constitute the true soul of a code and, even more of the mere rules that make it up, allow to appreciate the spirit and character that are immanent to it. Secondly, we have retraced the specific events of the individual institutions that came together in Book VI, following the actual behavior in the historical (ie studying them in their legislative dimension, doctrinal, and, when possible, case law) in order to identify and verify the common characteristics, structural or functional, which may have led, in systematic adopted in 1942, the amalgamation. Survey which, among other things, could help determine whether the legislature's choice was "authoritarian," wich mean that is designed from scratch to impose a different legal architecture on which to develop future law, or necessitated, in the sense that the works conducted by dogmatic science and by case law upon the code of '65 in the light of new doctrinal influences would need to find a positive expression such as that in fact upheld.
Information Behavior - Ein zentrales Forschungsthema der Informationswissenschaft
Creators: name: Elsweiler, David
name: Hammwöhner, Rainer
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 020 Bibliotheks- und Informationswissenschaft

description: In diesem Beitrag wird die Beobachtung des Informationsverhaltens als zentraler methodischer Ansatz der informationswissenschaftlicher Forschung identifiziert, der auch unter Anerkennung terminologischer, evtl. sogar ontologischer Grundannahmen eine Kooperation über die Grenzen etablierter Paradigmata hinaus erlaubt.
Localization of bulk matter fields, the hierarchy problem and corrections to Coulomb's law on a pure de Sitter thick braneworld
Creators: name: Guo, Heng
name: Herrera-Aguilar, Alfredo
name: Liu, Yu-Xiao
name: Malagon-Morejon, Dagoberto
name: Mora-Luna, Refugio Rigel
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper we investigate the localization and mass spectra of matter fields with spin 0, 1 and 1/2 on a geometric thick brane generated by pure 4D and 5D positive cosmological constants without bulk scalar fields. This model possesses a 4D cosmological constant that can be made as small as one desires without fine-tuning it with the bulk cosmological constant. The RS model is obtained as an analytic continuation of the flat brane limit of this braneworld configuration when the Hubble parameter disappears. Within this inflating braneworld model it is possible to formulate a mechanism for obtaining TeV mass scales from Planck ones by adding a positive thin brane, where the Standard Model fields are trapped, at a distance y_2 from the origin, where the Planck thick brane resides. The brane separation must be of the same order than the inverse thickness parameter of the model in order for the mechanism to generate the desired hierarchy. This result is obtained by imposing the recovery of both the correct 4D gravitational couplings and the actually observed accelerated expansion of the universe in our de Sitter braneworld. Regarding the localization of matter in the purely geometric thick braneworld, for spin 0 massless and massive scalar fields as well as for spin 1 vector fields, the potentials of the Kaluza--Klein (KK) modes in thecorresponding Schroedinger equations are modified Poeschl-Teller potentials, which lead to the localization of the scalar and vector zero modes on the brane as well as to mass gaps in the mass spectra. We also compute the corrections to Coulomb's law coming from massive KK vector modes. For spin 1/2 fermions, we introduce the bulk mass term MF(z)\barΨΨin the action and show that localization of the massless left-chiral fermion zero mode is feasible for two mass functions MF(z) with a finite/infinite number of massive KK bound states.
description: 28 pages in latex, 19 figures, title modified according to substantial additions performed in the text of the manuscript. To appear in Phys Rev D
Knockin' on pollen's door: live cell imaging of early polarization events in germinating Arabidopsis pollen
Creators: name: Vogler, Frank
name: Konrad, Sebastian S. A.
name: Sprunck, Stefanie
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: pollen activation, cell polarization, bulging, vesicular trafficking, ARO1, actin cytoskeleton, sperm cells
subject: 570 Biowissenschaften, Biologie

description: Pollen tubes are an excellent system for studying the cellular dynamics and complex signaling pathways that coordinate polarized tip growth. Although several signaling mechanisms acting in the tip-growing pollen tube have been described, our knowledge on the subcellular and molecular events during pollen germination and growth site selection at the pollen plasma membrane is rather scarce. To simultaneously track germinating pollen from up to 12 genetically different plants we developed an inexpensive and easy mounting technique, suitable for every standard microscope setup. We performed high magnification live-cell imaging during Arabidopsis pollen activation, germination, and the establishment of pollen tube tip growth by using fluorescent marker lines labeling either the pollen cytoplasm, vesicles, the actin cytoskeleton or the sperm cell nuclei and membranes. Our studies revealed distinctive vesicle and F-actin polarization during pollen activation and characteristic growth kinetics during pollen germination and pollen tube formation. Initially, the germinating Arabidopsis pollen tube grows slowly and forms a uniform roundish bulge, followed by a transition phase with vesicles heavily accumulating at the growth site before switching to rapid tip growth. Furthermore, we found the two sperm cells to be transported into the pollen tube after the phase of rapid tip growth has been initiated. The method presented here is suitable to quantitatively study subcellular events during Arabidopsis pollen germination and growth, and for the detailed analysis of pollen mutants with respect to pollen polarization, bulging, or growth site selection at the pollen plasma membrane.
Markov Chain Monte Carlo Based on Deterministic Transformations
Creators: name: Dutta, Somak
name: Bhattacharya, Sourabh
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computation (stat.CO)
subject: FOS: Computer and information sciences

description: In this article we propose a novel MCMC method based on deterministic transformations T: X x D --> X where X is the state-space and D is some set which may or may not be a subset of X. We refer to our new methodology as Transformation-based Markov chain Monte Carlo (TMCMC). One of the remarkable advantages of our proposal is that even if the underlying target distribution is very high-dimensional, deterministic transformation of a one-dimensional random variable is sufficient to generate an appropriate Markov chain that is guaranteed to converge to the high-dimensional target distribution. Apart from clearly leading to massive computational savings, this idea of deterministically transforming a single random variable very generally leads to excellent acceptance rates, even though all the random variables associated with the high-dimensional target distribution are updated in a single block. Since it is well-known that joint updating of many random variables using Metropolis-Hastings (MH) algorithm generally leads to poor acceptance rates, TMCMC, in this regard, seems to provide a significant advance. We validate our proposal theoretically, establishing the convergence properties. Furthermore, we show that TMCMC can be very effectively adopted for simulating from doubly intractable distributions. TMCMC is compared with MH using the well-known Challenger data, demonstrating the effectiveness of of the former in the case of highly correlated variables. Moreover, we apply our methodology to a challenging posterior simulation problem associated with the geostatistical model of Diggle et al. (1998), updating 160 unknown parameters jointly, using a deterministic transformation of a one-dimensional random variable. Remarkable computational savings as well as good convergence properties and acceptance rates are the results.
description: 28 pages, 3 figures; Longer abstract inside article
Degrés d'homogénéité de l'ensemble des intersections complètes singulières
Creators: name: Benoist, Olivier
Publisher: name: arXiv
Year: 2010
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14M10, 14N05, 14M25

description: A classical result of Boole shows that, in characteristic 0, the set of singular degree d hypersurfaces in P^N is a divisor of degree (N+1)(d-1)^N in the projective space of all hypersurfaces. We give here analogous formulae for complete intersections in P^N of arbitrary codimension and degrees, in any characteristic. ----- Un resultat classique de Boole montre que, sur un corps de caracteristique 0, l'ensemble des hypersurfaces singulieres de degre d dans P^N est un diviseur de degre (N+1)(d-1)^N de l'espace projectif de toutes les hypersurfaces. On obtient ici des formules analogues pour des intersections completes de codimension et de degres quelconques dans P^N, en toute caracteristique.
description: 23 pages, in french
MPEC 2023-J07 : 2023 HN7
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 HN7

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
title: "Statua di Eros dormiente", arte romana, inv. CXCII (ITA/EN)
title: Scheda catalogo digitale Borghese
titleType: AlternativeTitle
Creators: name: Ciccarello, Giulia
name: Galleria Borghese
Publisher: name: Galleria Borghese
Year: 2024

description: Pubblicazione delle schede delle opere conservate nel museo ed estratte dal catalogo digitale di

Galleria Borghese, nelle due versioni esistenti online, in italiano e inglese.

Collegamento al catalogo digitale:

ITA: https://www.collezionegalleriaborghese.it/

EN: https://www.collezionegalleriaborghese.it/en
The influence of negative stimulus features on conflict adaption: evidence from fluency of processing
Creators: name: Fritz, Julia
name: Fischer, Rico
name: Dreisbach, Gesine
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: conflict adaptation, aversive signal, fluency of processing
subject: 150 Psychologie

description: Cognitive control enables adaptive behavior in a dynamically changing environment. In this context, one prominent adaptation effect is the sequential conflict adjustment, i.e., the observation of reduced response interference on trials following conflict trials. Increasing evidence suggests that such response conflicts are registered as aversive signals. So far, however, the functional role of this aversive signal for conflict adaptation to occur has not been put to test directly. In two experiments, the affective valence of conflict stimuli was manipulated by fluency of processing (stimulus contrast). Experiment 1 used a flanker interference task, Experiment 2 a color-word Stroop task. In both experiments, conflict adaptation effects were only present in fluent, but absent in disfluent trials. Results thus speak against the simple idea that any aversive stimulus feature is suited to promote specific conflict adjustments. Two alternative but not mutually exclusive accounts, namely resource competition and adaptation-by-motivation, will be discussed.
Subatomic resolution force microscopy reveals internal structure and adsorption sites of small iron clusters
Creators: name: Emmrich, Matthias
name: Huber, Ferdinand
name: Pielmeier, Florian
name: Welker, Joachim
name: Hofmann, Thomas
name: Schneiderbauer, Maximilian
name: Meuer, Daniel
name: Polesya, Svitlana
name: Mankovsky, Sergiy
name: Koedderitzsch, Diemo
name: Ebert, Hubert
name: Giessibl, Franz J.
Publisher: name: Universität Regensburg
Year: 2015
Subjects: subject: 530 Physik

description: Clusters built from individual iron atoms adsorbed on surfaces (adatoms) were investigated by atomic force microscopy (AFM) with subatomic resolution. Single copper and iron adatoms appeared as toroidal structures and multiatom clusters as connected structures, showing each individual atom as a torus. For single adatoms, the toroidal shape of the AFM image depends on the bonding symmetry of the adatom to the underlying structure [twofold for copper on copper(110) and threefold for iron on copper(111)]. Density functional theory calculations support the experimental data. The findings correct our previous work, in which multiple minima in the AFM signal were interpreted as a reflection of the orientation of a single front atom, and suggest that dual and triple minima in the force signal are caused by dimer and trimer tips, respectively.
Synthesis of spirochromene derivatives catalyzed by Mn(bpyo)2/MCM-41 in water
Creators: name: Mommahed Heravi, Majid
name: Daraie, Mansoureh
name: Beheshtiha, Yahya S.
Publisher: name: figshare
Year: 2022
Subjects: subject: 30302 Nanochemistry and Supramolecular Chemistry
subject: FOS: Chemical sciences
subject: 30303 Optical Properties of Materials
subject: 30502 Natural Products Chemistry
subject: 30701 Quantum Chemistry
subject: 39904 Organometallic Chemistry
subject: Organic Chemistry
subject: 30599 Organic Chemistry not elsewhere classified
subject: 30205 Non-metal Chemistry
subject: Nuclear Chemistry
subject: 30504 Organic Green Chemistry

description: A three-component one-pot synthesis of spirochromene derivatives by condensing cyclic 1,3-diketones, isatin or acenaphthenequinone, and malononitrile using a catalytic amount of Mn(bpyo)2/MCM-41 in refluxing water is reported.
$Z^n$-free groups are CAT(0)
Creators: name: Bumagin, Inna
name: Kharlampovich, Olga
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E08, 20F67 (Primary) 20F65, 57M07, 57M10, 57M20 (Secondary)

description: We show that every group with free $\mathbb{Z}^n$-length function is CAT(0).
description: To be published in the Journal of the London Mathematical Society. This version is very close to the accepted version. The exposition greatly improved due to the referee's comments
Climate change litigation and narrative : how to use litigation to tell compelling climate stories
Creators: name: Nosek, Grace
Publisher: name: University of British Columbia
Year: 2017

description: There is scientific consensus that anthropogenic climate change is occurring and that it has had and will continue to have profoundly negative social, economic, and environmental consequences. The US government has not taken sufficient action to mitigate the threat of dangerous climate change. Frustrated by the lack of action in the legislative and executive branches, climate advocates have turned to the judicial branch and litigation to advance their cause. Litigation is important not only for its ability to create substantive legal change, but also for its power to generate media coverage and shape public and political discourse. There is growing recognition of the important contributions psychology can make to the study and practice of law. Research in psychology helps illuminate why the US public has had trouble engaging with the science of climate change, understanding the risks posed by climate change, and feeling motivated to take corrective action. Research also shows that how a public health issue is framed powerfully shapes the public debate and policy prescriptions for that issue. This thesis examines how climate advocates can construct their litigation messaging in light of insights from psychological and framing theories to most effectively advance the climate movement in the US. I chose to analyze three climate change litigation strategies that might present an opportunity of overcoming the public’s psychological hurdles to engaging with climate change and offer a narrative on climate change that would resonate with the public. In conducting my analysis, I found that, if used effectively, the medium of litigation offers a unique opportunity to reframe climate change and overcome the public’s cognitive hurdles to perceiving the true dangers of climate change. The structure of litigation, which requires plaintiffs to trace their injuries—including economic, social, and health-related injuries—to the actions of defendants, allows climate advocates to leverage insights from framing and psychology to make their climate change narratives as salient as possible.