cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wavelet penalized likelihood estimation in generalized functional models
Creators: name: Gannaz, Irène
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: The paper deals with generalized functional regression. The aim is to estimate the influence of covariates on observations, drawn from an exponential distribution. The link considered has a semiparametric expression: if we are interested in a functional influence of some covariates, we authorize others to be modeled linearly. We thus consider a generalized partially linear regression model with unknown regression coefficients and an unknown nonparametric function. We present a maximum penalized likelihood procedure to estimate the components of the model introducing penalty based wavelet estimators. Asymptotic rates of the estimates of both the parametric and the nonparametric part of the model are given and quasi-minimax optimality is obtained under usual conditions in literature. We establish in particular that the LASSO penalty leads to an adaptive estimation with respect to the regularity of the estimated function. An algorithm based on backfitting and Fisher-scoring is also proposed for implementation. Simulations are used to illustrate the finite sample behaviour, including a comparison with kernel and splines based methods.
Spin-waves excitations in the presence of nanoclusters of magnetic impurities
Creators: name: Chakraborty, Akash
name: Wenk, Paul
name: Kettemann, Stefan
name: Bouzerar, Richard
name: Bouzerar, Georges
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: spin-waves, nanoscale inhomogeneities, diluted magnetic systems, magnons, spin-stiffness
subject: 530 Physik
subject: 75.30.Ds Spin waves
subject: 75.75.+a Magnetic properties of nanostructures
subject: 75.50.Pp Magnetic semiconductors
subject: 75.60.Ej Magnetization curves, hysteresis, Barkhausen and related effects
subject: 75.30.Hx Magnetic impurity interactions
subject: 75.40.Gb D

description: Nanoscale inhomogeneities and impurity clustering are often found to drastically affect the magnetic and transport properties in disordered/diluted systems, giving rise to rich and complex phenomena. However, the physics of these systems still remains to be explored in more detail as can be seen from the scarce literature available. We present a detailed theoretical analysis of the effects of nanoscale inhomogeneities on the spin excitation spectrum in diluted magnetic systems. The calculations are performed on relatively large systems (up to N = ${{66}^{3}}$). It is found that even low concentrations of inhomogeneities have drastic effects on both the magnon density of states and magnon excitations. These effects become even more pronounced in the case of short-ranged magnetic interactions between the impurities. In contrast to the increase of critical temperatures ${{T}_{C}}$, reported in previous studies, the spin-stiffness D is systematically suppressed in the presence of nanoscale inhomogeneities. Moreover D is found to strongly depend on the inhomogeneities' concentration, the cluster size, as well as the range of the magnetic interactions. The findings are discussed in the prospect of potential spintronics applications. We believe that this detailed numerical work could initiate future experimental studies to probe this rich physics with the most appropriate tool, inelastic neutron scattering.
Starspots due to large-scale vortices in rotating turbulent convection
Creators: name: Käpylä, P. J.
name: Mantere, M. J.
name: Hackman, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the generation of large-scale vortices in rotating turbulent convection by means of Cartesian direct numerical simulations. We find that for sufficiently rapid rotation, cyclonic structures on a scale large in comparison to that of the convective eddies, emerge, provided that the fluid Reynolds number exceeds a critical value. For slower rotation, cool cyclonic vortices are preferred, whereas for rapid rotation, warm anti-cyclonic vortices are favored. In some runs in the intermediate regime both types of cyclones co-exist for thousands of convective turnover times. The temperature contrast between the vortices and the surrounding atmosphere is of the order of five per cent. We relate the simulation results to observations of rapidly rotating late-type stars that are known to exhibit large high-latitude spots from Doppler imaging. In many cases, cool spots are accompanied with spotted regions with temperatures higher than the average. In this paper, we investigate a scenario according to which the spots observed in the temperature maps could have a non-magnetic origin due to large-scale vortices in the convection zones of the stars.
description: 8 pages, 8 figures, version published in ApJ. Version with higher resolution figures can be found at http://www.helsinki.fi/~kapyla/publ.html
Many-body phenomena in QED-cavity arrays
Creators: name: Tomadin, Andrea
name: Fazio, Rosario
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Coupled quantum electrodynamics (QED) cavities have been recently proposed as new systems to simulate a variety of equilibrium and non-equilibrium many-body phenomena. We present a brief review of their main properties together with a survey of the last developments of the field and some perspectives concerning their experimental realizations and possible new theoretical directions.
description: 8 pages, 3 figures
Wrapped in wool and copper : encountering Musqueam art at Vancouver's Granville at 70th development project
Creators: name: Ariss, Alison
Publisher: name: University of British Columbia
Year: 2017

description: Musqueam artworks are not an unusual sight in Vancouver: wool weavings and carved sculptures welcome visitors to major public institutions throughout the city. The recent cəsna?əm: City Before the City exhibitions that opened in January 2015 drew attention to the ongoing work of Musqueam people in maintaining their territory, language, and cultural practices in the face of colonial settlement and urban expansion. At Granville at 70th, an urban development project completed in 2014, Musqueam weavings and sculptures are set into an architectural environment that is wrapped in copper cladding, a material signified by the developers as one highly valued by Indigenous peoples. The project specifically references copper belongings in an ancient ancestor burial, from the nearby cəsna?əm village. However, copper is not a material considered especially valuable by Musqueam people, although it is central in ceremonial, social and political practices of some First Nations whose territories lie further north on the Pacific Coast. What then, is activated in this intersection of art, cultural practices, urban development and daily life in Vancouver? This thesis aims to provide a critical analysis of the art installation and urban redevelopment project, where the purposefully associated ideas about materials, place and “Indianness” make instances of misrecognition visible. The concept of recognition presented in Glen Coulthard’s Red Skin, White Masks contextualizes the analysis of the complex structures of colonialism enacted in this location. Alfred Gell’s “nexus of intentionalities,” is set into dialogue with Coulthard to address how the social agency indexed by the copper and the Musqueam artworks are subject to misrecognition. Informed through these aforementioned ideas, a reading that risks a renewal of the hierarchization of Coast Salish art within the historic construct of Northwest Coast Native art is presented, simultaneous to one that risks the hegemonization of Indigeneity through “Indianness.” However, through the words of the Musqueam artists, the agency of the artworks is legible as “everyday decolonization,” within a nexus that affirms the Musqueam people’s presence and continuity. This thesis will address how and by whom and through what means the project’s envisioned “sense of place” is informed and constructed.
Sperm Bundles in the Seminal Vesicles of Sexually Mature Lasius Ant Males
Creators: name: Heinze, Jürgen
name: Burnett, William E.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 590 Tiere (Zoologie)

description: In many insects, sperm cells are produced in bundles with their heads being held together by a glycoprotein matrix secreted by a cyst cell. Mature sperm cells in the seminal vesicles are usually free, but in sawflies and several other insects, such structures (spermatodesmata) remain intact and sperm cells may be ejaculated as bundles. Here we report the occurrence of spermatodesmata in mature males of the ant Lasius pallitarsis. Microscopic investigations of the abdominal contents of males immediately prior to their nuptial flights showed that the anterior ends of numerous sperm cells were embedded in an oval-shaped 20 by 30 micrometer extracellular fibrous cap. Individual sperm ranged in length from 55 to 75 micrometers with an average overall length of 65 micrometers. The bulb-shaped heads of the sperm were relatively small, only about 1.5 micrometers in length and about 1.1 micrometers in diameter. The diameter of the sperm tails was approximately 1 micrometer. Observations of live preparations of the spermatodesmata showed increasingly active undulating wave-like movement of the sperm tails as the slide preparations aged. This appears to be the first case of sperm bundles being present in the seminal vesicles of mature ant males – males that are immediately poised to complete their nuptial mating flight.
O'SIMLIKLAR JAMOALARINI KLASSIFIKATSIYALASH VA UNING AHAMIYATI
Creators: name: Obidova, Niluzar
Publisher: name: Zenodo
Year: 2025

description: Ushbu tezisda o'simliklar klassifikatsiyasi yoki sintaksanomiya - muayyan hududdagi barcha o'simliklar jamoalarini bir biriga bo'ysinuvchi ierarxik klassifikatsion mezonlarga asosan taqsimlanish va tartibga solish jarayoni haqida ma'lumot berilgan. O'simliklar qoplamini klassifikatsiyalash (sintaksanomiya) geobotanikning asosiy bo'limlaridan biri xisoblanib, sintaksanomiya esa faqat o'simlik jamoalarini tartibga solish uchungina qo'llanadi. Bunday guruxlarga bo'lish orqali o'simliklar jamoasini o'rganishda bir qancha qulayliklarga egaligi haqida so'z yuritilgan.
Prenatal Origins of Temperament: Fetal Growth, Brain Structure, and Inhibitory Control in Adolescence
Creators: name: Schlotz, Wolff
name: Godfrey, Keith M.
name: Phillips, David I.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 150 Psychologie

description: Objective Individual differences in the temperamental dimension of effortful control are constitutionally based and have been associated with an adverse prenatal developmental environment, with structural brain alterations presenting a potential mechanism. We investigated this hypothesis for anatomically defined brain regions implicated in cognitive and inhibitory motor control. Methods Twenty-seven 15–16 year old participants with low, medium, or high fetal growth were selected from a longitudinal birth cohort to maximize variation and represent the full normal spectrum of fetal growth. Outcome measures were parent ratings of attention and inhibitory control, thickness and surface area of the orbitofrontal cortex (lateral (LOFC) and medial (MOFC)) and right inferior frontal gyrus (rIFG), and volumetric measures of the striatum and amygdala. Results Lower birth weight was associated with lower inhibitory control, smaller surface area of LOFC, MOFC and rIFG, lower caudate volume, and thicker MOFC. A mediation model found a significant indirect effect of birth weight on inhibitory control via caudate volume. Conclusions Our findings support a neuroanatomical mechanism underlying potential long-term consequences of an adverse fetal developmental environment for behavioral inhibitory control in adolescence and have implications for understanding putative prenatal developmental origins of externalizing behavioral problems and self-control.
Image correction for atomic force microscopy images with functionalized tips
Creators: name: Neu, Mathias
name: Moll, Nikolaj
name: Gross, Leo
name: Meyer, Gerhard
name: Giessibl, Franz J.
name: Repp, Jascha
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 530 Physik
subject: 68.37.Ps
subject: 68.43.Fg

description: It has been demonstrated that atomic force microscopy imaging with CO-functionalized tips provides unprecedented resolution, yet it is subject to strong image distortions. Here we propose a method to correct for these distortions. The lateral force acting on the tip apex is calculated from three-dimensional maps of the frequency shift signal. Assuming a linear relationship between lateral distortion and force, atomic force microscopy images could be deskewed for different substrate systems.
Impact of the Diverse Models of Flexible Work Arrangements on Employee Well-Being and Productivity in the Technology Industry
Creators: name: Liyanage, Suriyapperuma Liyanage Isuru Navod Bandara
Publisher: name: Zenodo
Year: 2024
Subjects: Flexible Work Arrangements, Remote Work, Hybrid Work, Employee Well-Being, Workplace Productivity, Technology Industry, Human Resource Management, Work-Life Balance, Organizational Behavior, Employee Satisfaction

description: This study presents a systematic review of existing literature on the impact of flexible work arrangement models such as remote work, telecommuting, job sharing, compressed workweeks and digital nomadism on employee well-being and productivity within the technology industry. The review synthesizes findings from a range of peer-reviewed studies and credible sources to analyze how different models of flexible work influence employee well-being and productivity. The paper offers evidence-based insights and recommendations for decision makers aiming to adopt effective and adaptive work practices in the evolving tech landscape.
description: The adoption of flexible work arrangements (FWAs) has gained considerable momentum in recent decades as organizations strive to address employee-related challenges, particularly in retaining top talent. This trend was further accelerated by the COVID-19 pandemic, with the technology industry being at the forefront of FWA implementation. Given the fast-paced, ever-evolving nature of the tech industry, organizations must maintain a competitive edge, often placing employees under significant pressure and impacting their work-life balance. This, in turn, can negatively affect employee well-being, productivity, and, ultimately, organizational performance.

The present study aims to explore the impact of various FWAs on employee well-being and productivity within the technology sector. Specifically, the research focuses on identifying the most effective FWAs, examining their influence on employee well-being, and investigating the relationship between FWAs and productivity. A systematic review methodology was employed, analyzing ten journal articles selected based on predetermined criteria.

Findings indicate that remote working and telecommuting are the most commonly adopted and effective FWAs within the technology industry. Moreover, the study reveals a significant positive impact of FWAs on employee well-being and a strong correlation between FWAs and enhanced employee productivity. Based on these findings, it is recommended that organizations not only encourage the use of FWAs but also actively support their employees' well-being. Effective communication and ongoing support are essential for the successful implementation of FWAs, as failure to do so may lead to adverse effects such as social isolation and absenteeism.
Towards leptogenesis at NLO: the right-handed neutrino interaction rate
Creators: name: Salvio, Alberto
name: Lodone, Paolo
name: Strumia, Alessandro
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute quantum and thermal corrections to the right-handed neutrino interaction rate in the early universe at next-to-leading order in all the relevant SM couplings (gauge, top Yukawa and higgs couplings). Previous computations considered 2 -> 2 scatterings, finding infra-red divergences. The KLN theorem demands that infra-red divergences cancel in the full result: after adding 1 -> 3 and one-loop virtual corrections that enter at the same order we find a simple result.
description: 20 pages, 9 figures, error fixed in an equation right after Eqs. (18); v4: experimental value of the Higgs mass consistently included
Weak consistency of Markov chain Monte Carlo methods
Creators: name: Kamatani, Kengo
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: Methodology (stat.ME)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Markov chain Monte Calro methods (MCMC) are commonly used in Bayesian statistics. In the last twenty years, many results have been established for the calculation of the exact convergence rate of MCMC methods. We introduce another rate of convergence for MCMC methods by approximation techniques. This rate can be obtained by the convergence of the Markov chain to a diffusion process. We apply it to a simple mixture model and obtain its convergence rate. Numerical simulations are performed to illustrate the effect of the rate.
description: 14 pages
ACRR: Ad Hoc On-Demand Distance Vector Routing with Controlled Route Requests
Creators: name: Kataria, Jayesh
name: Dhekne, P. S.
name: Sanyal, Sugata
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Reactive routing protocols like Ad Hoc On-Demand Distance Vector Routing (AODV) and Dynamic Source Routing (DSR)in Ad-Hoc Wireless Networks which are used in Mobile and Ad Hoc Networks (MANETs) work by flooding the network with control packets. There is generally a limit on the number of these packets that can be generated or forwarded. But a malicious node can disregard this limit and flood the network with fake control packets. These packets hog the limited bandwidth and processing power of genuine nodes in the network while being forwarded. Due to this, genuine route requests suffer and many routes either do not get a chance to materialize or they end up being longer than otherwise. In this paper we propose a non cryptographic solution to the above problem and prove its efficiency by means of simulation.
description: 15 Pages, 6 Figures, 1 table, 3rd International Conference on Computers and Devices for Communication (CODEC-06) Institute of Radio Physics and Electronics, University of Calcutta, December 18-20, 2006.
On the equivariant implicit function theorem with low regularity and applications to geometric variational problems
Creators: name: Bettiol, Renato G.
name: Piccione, Paolo
name: Siciliano, Gaetano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 46T05, 47J07, 58C15, 58D19

description: We prove an implicit function theorem for functions on infinite-dimensional Banach manifolds, invariant under the (local) action of a finite dimensional Lie group. Motivated by some geometric variational problems, we consider group actions that are not necessarily differentiable everywhere, but only on some dense subset. Applications are discussed in the context of harmonic maps, closed (pseudo-)Riemannian geodesics, and constant mean curvature hypersurfaces.
description: LaTeX2e, 23 pages, revised version. To appear in Proc. Edinb. Math. Soc
The exploitation of natural resources in the financing of terrorism. The case of ISIS in Syria and Iraq
Creators: name: Farmaki, Roumpini
name: Φαρμάκη, Ρουμπίνη
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2021
Subjects: subject: Energy
subject: Terrorism
subject: Natural resources
subject: Financing

description: Η παρούσα εργασία πραγματεύεται τις σχέσεις της τρομοκρατίας με τους φυσικούς πόρους και πιο συγκεκριμένα την εκμετάλλευση των φυσικών πόρων από τρομοκρατικές ομάδες με σκοπό την χρηματοδότηση των πολιτικών, θρησκευτικών και τρομοκρατικών τους σκοπών
In nomine Parti : une étude des origines de l’appui des catholiques envers le Parti libéral du Canada, 1867-1949
Creators: name: Desrochers, Éric
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2019
Subjects: Politique canadienne
Histoire politique
Politique et identité
Clivages ethniques
Catholiques au Canada
Canadian politics

description: L’appui des catholiques envers le Parti libéral du Canada est un intrigant comportement électoral. Si ce phénomène est bien documenté, et ce depuis des décennies, les politologues n’ont pas encore réussi à l’expliquer de manière satisfaisante. Jusqu’à présent, l’approche la plus commune a été de tester l’effet de plusieurs variables sur le comportement des catholiques, ce qui n’a guère été satisfaisant. Si ces études n’ont pas obtenu les résultats espérés, c’est parce que leurs auteurs ont mal abordé le problème, c’est-à-dire qu’ils ont considéré l’identité catholique comme une variable indépendante. Nous soutenons que ce sont plutôt des questions d’ordre ethnolinguistique, plutôt que religieux, qui expliquent le comportement politique des catholiques. Nous identifions d’abord les origines temporelles de ce vote des catholiques pour les libéraux. Puis, nous déterminons si ce changement a eu lieu en même temps et pour les mêmes raisons chez les Franco- et Anglo-catholiques. Limitant notre étude à la période de 1867 à 1949, nous faisons usage d’histoire politique, plus précisément celle qui s’intéresse aux systèmes de partis canadiens et au Parti libéral en particulier. Nous complétons en utilisant une approche qui établit un lien entre l’identité et le comportement politique. Nous expliquons donc les comportements politiques des Franco- et Anglo-catholiques à la lumière de leur contexte sociopolitique, accordant une importance particulière au développement de clivages ethnolinguistiques et religieux, et à la vision de l’identité canadienne proposée par les partis politiques. Nous concluons que ce comportement des catholiques était avant tout déterminé par des facteurs d’ordre ethnique. Plusieurs ont surestimé l’importance de l’identité religieuse, entre 1867 et 1949. Cette conclusion a d’intéressantes retombées sur l’étude des comportements électoraux au Canada, puisqu’elle vient remettre en question l’étude du comportement des catholiques, groupe plus hétérogène qu’il ne l’avait été suggéré par les études précédentes.
A discrete linearizability test based on multiscale analysis
Creators: name: Heredero, R. Hernandez
name: Levi, D.
name: Scimiterna, C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we consider the classification of dispersive linearizable partial difference equations defined on a quad-graph by the multiple scale reduction around their harmonic solution. We show that the A_1, A_2 and A_3 linearizability conditions restrain the number of the parameters which enter into the equation. A subclass of the equations which pass the A_3 C-integrability conditions can be linearized by a Mobius transformation.
Sequence and Ionomic Analysis of Divergent Strains of Maize Inbred Line B73 with an Altered Growth Phenotype
Creators: name: Dresselhaus, Thomas
name: Mascher, Martin
name: Gerlach, Nina
name: Gahrtz, Manfred
name: Bucher, Marcel
name: Scholz, Uwe
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 570 Biowissenschaften, Biologie

description: Maize (Zea mays) is the most widely grown crop species in the world and a classical model organism for plant research. The completion of a high-quality reference genome sequence and the advent of high-throughput sequencing have greatly empowered re-sequencing studies in maize. In this study, plants of maize inbred line B73 descended from two different sets of seed material grown for several generations either in the field or in the greenhouse were found to show a different growth phenotype and ionome under phosphate starvation conditions and moreover a different responsiveness towards mycorrhizal fungi of the species Glomus intraradices (syn: Rhizophagus irregularis). Whole genome re-sequencing of individuals from both sets and comparison to the B73 reference sequence revealed three cryptic introgressions on chromosomes 1, 5 and 10 in the line grown in the greenhouse summing up to a total of 5,257 single-nucleotide polymorphisms (SNPs). Transcriptome sequencing of three individuals from each set lent further support to the location of the introgression intervals and confirmed them to be fixed in all sequenced individuals. Moreover, we identified >120 genes differentially expressed between the two B73 lines. We thus have found a nearly-isogenic line (NIL) of maize inbred line B73 that is characterized by an altered growth phenotype under phosphate starvation conditions and an improved responsiveness towards symbiosis with mycorrhizal fungi. Through next-generation sequencing of the genomes and transcriptomes we were able to delineate exact introgression intervals. Putative de novo mutations appeared approximately uniformly distributed along the ten maize chromosomes mainly representing G:C -> A:T transitions. The plant material described in this study will be a valuable tool both for functional studies of genes differentially expressed in both B73 lines and for research on growth behavior especially in response to symbiosis between maize and mycorrhizal fungi.
Photocatalytic water oxidation at soft interfaces
Creators: name: Hansen, Malte
name: Li, Fei
name: Sun, Licheng
name: König, Burkhard
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 540 Chemie

description: Molecular water oxidation catalysts have been, for the first time, co-embedded with a photosensitizer into phospholipid membranes. The functionalized small unilamellar vesicles produce molecular oxygen by photocatalysis when irradiated with visible light in aqueous buffer. The two dimensional assembly of the catalysts at the lipid–water interface mimics photoactive membranes in biology and allows photocatalytic water oxidation at very low catalyst concentrations of 500 nM, which cannot be reached in homogeneous systems. Highest TONs are obtained below the membrane's main transition temperature indicating that phase separation, clustering and a limited dynamic enhance the photocatalytic activity of the assembly. The concept of membrane co-embedding can be applied to various combinations, ratios and concentrations of photosensitizers and water oxidizing catalysts, providing a new approach for artificial photosynthesis
description: Open-Access-Komponente aus der Allianzlizenz
Exploring the neural basis of real-life joint action: Measuring brain activation during joint table setting with functional near-infrared spectroscopy (fNIRS)
Creators: name: Egetemeir, Johanna
name: Stenneken, Prisca
name: Koehler, Saskia
name: Fallgatter, Andreas J.
name: Herrmann, Martin J.
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: joint action, fNIRS, neuroimaging, social interaction, real-life interaction, simulation
subject: 150 Psychologie

description: Many every-day life situations require two or more individuals to execute actions together. Assessing brain activation during naturalistic tasks to uncover relevant processes underlying such real-life joint action situations has remained a methodological challenge. In the present study, we introduce a novel joint action paradigm that enables the assessment of brain activation during real-life joint action tasks using functional near-infrared spectroscopy (fNIRS). We monitored brain activation of participants who coordinated complex actions with a partner sitting opposite them. Participants performed table setting tasks, either alone (solo action) or in cooperation with a partner (joint action), or they observed the partner performing the task (action observation). Comparing joint action and solo action revealed stronger activation (higher [oxy-Hb]-concentration) during joint action in a number of areas. Among these were areas in the inferior parietal lobule (IPL) that additionally showed an overlap of activation during action observation and solo action. Areas with such a close link between action observation and action execution have been associated with action simulation processes. The magnitude of activation in these IPL areas also varied according to joint action type and its respective demand on action simulation. The results validate fNIRS as an imaging technique for exploring the functional correlates of interindividual action coordination in real-life settings and suggest that coordinating actions in real-life situations requires simulating the actions of the partner.
Relativistic Radiation Mediated Shocks
Creators: name: Budnik, Ran
name: Katz, Boaz
name: Sagiv, Amir
name: Waxman, Eli
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The structure of relativistic radiation mediated shocks (RRMS) propagating into a cold electron-proton plasma is calculated and analyzed. A qualitative discussion of the physics of relativistic and non relativistic shocks, including order of magnitude estimates for the relevant temperature and length scales, is presented. Detailed numerical solutions are derived for shock Lorentz factors $Γ_u$ in the range $6\leΓ_u\le30$, using a novel iteration technique solving the hydrodynamics and radiation transport equations (the protons, electrons and positrons are argued to be coupled by collective plasma processes and are treated as a fluid). The shock transition (deceleration) region, where the Lorentz factor $ Γ$ drops from $ Γ_u $ to $ \sim 1 $, is characterized by high plasma temperatures $ T\sim Γm_ec^2 $ and highly anisotropic radiation, with characteristic shock-frame energy of upstream and downstream going photons of a few~$\times\, m_ec^2$ and $\sim Γ^2 m_ec^2$, respectively.Photon scattering is dominated by e$^\pm$ pairs, with pair to proton density ratio reaching $\approx10^2Γ_u$. The width of the deceleration region, in terms of Thomson optical depths for upstream going photons, is large, $Δτ\simΓ_u^2$ ($Δτ\sim1$ neglecting the contribution of pairs) due to Klein Nishina suppression of the scattering cross section. A high energy photon component, narrowly beamed in the downstream direction, with a nearly flat power-law like spectrum, $νI_ν\proptoν^0$, and an energy cutoff at $ \sim Γ_u^2 m_ec^2 $ carries a fair fraction of the energy flux at the end of the deceleration region. An approximate analytic model of RRMS, reproducing the main features of the numerical results, is provided.
Good Vibrations – Effects of Whole Body Vibration on Attention in Healthy Individuals and Individuals with ADHD
Creators: name: Lange, Klaus W.
name: Fuermaier, Anselm B. M.
name: Tucha, Lara
name: Koerts, Janneke
name: van Heuvelen, Marike J. G.
name: van der Zee, Eddy A.
name: Tucha, Oliver
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 150 Psychologie

description: Objectives: Most of the current treatment strategies of ADHD are associated with a number of disadvantages which strengthen the need for alternative or additional approaches for the reatment of ADHD. In this respect, Whole Body Vibration (WBV) might be interesting as it was found to have beneficial effects on a variety of physiological measures. The present study explored the effects of WBV on attention of healthy individuals and adults diagnosed with ADHD. Methods: Eighty-three healthy individuals and seventeen adults diagnosed with ADHD participated in the study. WBV treatment was applied passively, while participants were sitting on a chair which was mounted on a vibrating platform. A repeated measure design was employed in order to explore potential effects of WBV treatment on attention within subjects. Attention (i.e. inhibitory control) was measured with a color-word interference paradigm. Results: A period of two minutes of WBV treatment had significant beneficial effects of small to medium size on attention of both healthy individuals and adults with ADHD. The effect of WBV treatment on attention did not differ significantly between groups. Conclusions: WBV was demonstrated to improve cognitive performance of healthy individuals as well as of individuals with ADHD. WBV treatment is relatively inexpensive and easy to apply and might therefore be of potential relevance for clinical use. The application of WBV treatment as a cognitive enhancement strategy and as a potential treatment of cognitive impairments is discussed.
Evolving JASMIN: high performance analysis and the data deluge
Creators: name: Massey, Neil
name: Kershaw, Phil
name: Pritchard, Matt
name: Pryor, Matt
name: Pepler, Sam
name: Churchill, Jonathan
name: Lawrence, Bryan
Publisher: name: Zenodo
Year: 2017

description: JASMIN is a highly successful data analysis system, which is used by thousands of academics and their industrial partners to analyse many petabytes of environmental data. The rapidly increasing volume of data stored on JASMIN, and the steadily increasing number of users, is making it necessary to investigate and implement new methods of providing computing resources to the users, storing the data that they produce from their analyses and storing and maintaining a very large archive of environmental data. To achieve this, two main areas of research are described. Firstly, providing users with virtualised services to best utilise the computing resources available. Secondly, using object storage to provide a large, yet affordable, data store and providing the users with tools and interfaces to common environmental data formats, so as to not unduly affect their current work flows.
The extrasolar planet GL 581 d: A potentially habitable planet?
Creators: name: von Paris, P.
name: Gebauer, S.
name: Godolt, M.
name: Grenfell, J. L.
name: Hedelt, P.
name: Kitzmann, D.
name: Patzer, A. B. C.
name: Rauer, H.
name: Stracke, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The planetary system around the M star Gliese 581 contains at least three close-in potentially low-mass planets, GL 581 c, d, and e. In order to address the question of the habitability of GL 581 d, we performed detailed atmospheric modeling studies for several planetary scenarios. A 1D radiative-convective model was used to calculate temperature and pressure profiles of model atmospheres, assumed to be composed of molecular nitrogen, water, and carbon dioxide. The model allows for changing surface pressures caused by evaporation/condensation of water and carbon dioxide. Furthermore, the treatment of the energy transport has been improved in the model to account in particular for high CO2, high-pressure Super-Earth conditions. For four high-pressure scenarios of our study, the resulting surface temperatures were above 273 K, indicating a potential habitability of the planet. These scenarios include three CO2-dominated atmospheres (95% CO2 concentration with 5, 10, and 20 bar surface pressure) and a high-pressure CO2-enriched atmosphere (5% CO2 concentration with 20 bar surface pressure). For all other considered scenarios, the calculated GL 581 d surface temperatures were below the freezing point of water, suggesting that GL 581 d would not be habitable then. The results for our CO2-dominated scenarios confirm very recent model results by Wordsworth et al. (2010). However, our model calculations imply that also atmospheres that are not CO2-dominated (i.e., 5% vmr instead of 95% vmr) could result in habitable conditions for GL 581 d.
description: accepted for publication in Astronomy&Astrophysics 18 pages, 10 figures, 7 tables, corrected typo in eq. 3 for H2O Rayleigh scattering (this version, 31.1.2013)
title: "Ara sepolcrale di Licinia Tyche", arte romana, inv. CXIVa (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 Moving Hotspots model for kHz QPOs in accreting neutron stars
Creators: name: Bachetti, Matteo
name: Romanova, Marina
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: 3D MHD simulation of accretion onto neutron stars have shown in the last few years that the footprint (hotspot) of the accretion flow changes with time. Two different kinds of accretion, namely the funnel flow and the equatorial accretion produced by instabilities at the inner disk, produce different kinds of motion of the hotspot. The funnel flow produces hotspots that move around the magnetic pole, while instabilities produce other hotspots that appear randomly and move along the equator or slightly above. The angular velocities of the two hotspots are different, the equatorial one being higher and both close to the Keplerian velocity in the inner region. Modeling of the lightcurves of these hotspots with Monte Carlo simulations show that the signatures produced in power specra by them, if observed, are QPOs plus low frequency components. Their frequencies, general behavior and features describe correctly most of the properties of kHz QPOs, if we assume the funnel flow hotspots as the origin of the lower kHz QPO and instabilities as the origin of the upper kHz QPO.
description: 4 pages, 2 figures, to appear in the Proceedings of the ASTRONS 2010 conference
Brain networks supporting perceptual grouping and contour selection
Creators: name: Volberg, Gregor
name: Greenlee, Mark W.
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: EEG, contour integration, lateral occipital cortex (LO), ERP, beta oscillation - See more at: http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00264/abstract#sthash.k5rTMVLb.dpuf
subject: 150 Psychologie

description: The human visual system groups local elements into global objects seemingly without effort. Using a contour integration task and EEG source level analyses, we tested the hypothesis that perceptual grouping requires a top-down selection, rather than a passive pooling, of neural information that codes local elements in the visual image. The participants were presented visual displays with or without a hidden contour. Two tasks were performed: a central luminance-change detection task and a peripheral contour detection task. Only in the contour-detection task could we find differential brain activity between contour and non-contour conditions, within a distributed brain network including parietal, lateral occipital and primary visual areas. Contour processing was associated with an inflow of information from lateral occipital into primary visual regions, as revealed from the slope of phase differences between source level oscillations within these areas. The findings suggest that contour integration results from a selection of neural information from lower visual areas, and that this selection is driven by the lateral occipital cortex.
Spark plasma sintering of cerium dioxide and its composites
Creators: name: Prasad R, Anil
Publisher: name: University of British Columbia
Year: 2017

description: Cerium dioxide (CeO₂) is an important electroceramic material with a wide array of applications in the fuel cell industry. Recently, cerium dioxide was also found to have similar thermophysical properties as common nuclear fuel materials such as uranium dioxide, thorium dioxide and plutonium dioxide. Thus, it can be used as a surrogate material for simulating the processing of nuclear fuel materials, without the risks associated with radioactivity. However, similar to other ceramic materials, processing of cerium dioxide is challenging, due to its high melting point and low ductility. Consequently, powder metallurgy techniques are widely employed to overcome the limitations of ceramic processing. In this thesis, studies on the processing of cerium dioxide and its composites using a novel sintering technique called Spark Plasma Sintering (SPS) were carried out. The effect of SPS process parameters on the physical and chemical changes of cerium dioxide were investigated. The results indicate that an optimal combination of sintering temperature, pressure and time are required in order to fabricate high integrity CeO₂ coupons. Challenges associated with chemical expansion and stoichiometric instabilities were observed and related to SPS processing conditions, as well as the electric current inherent to the SPS fabrication process.
The Occurrence and Mass Distribution of Close-in Super-Earths, Neptunes, and Jupiters
Creators: name: Howard, Andrew W.
name: Marcy, Geoffrey W.
name: Johnson, John Asher
name: Fischer, Debra A.
name: Wright, Jason T.
name: Isaacson, Howard
name: Valenti, Jeff A.
name: Anderson, Jay
name: Lin, Doug N. C.
name: Ida, Shigeru
Publisher: name: arXiv
Year: 2010
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The questions of how planets form and how common Earth-like planets are can be addressed by measuring the distribution of exoplanet masses and orbital periods. We report the occurrence rate of close-in planets (with orbital periods less than 50 days) based on precise Doppler measurements of 166 Sun-like stars. We measured increasing planet occurrence with decreasing planet mass (M). Extrapolation of a power law mass distribution fitted to our measurements, df/dlogM = 0.39M^-0.48, predicts that 23% of stars harbor a close-in Earth-mass planet (ranging from 0.5 to 2.0 Earth masses). Theoretical models of planet formation predict a deficit of planets in the domain from 5 to 30 Earth masses and with orbital periods less than 50 days. This region of parameter space is in fact well populated, implying that such models need substantial revision.
description: First published in Science on Oct 29, 2010 (vol. 330, pp. 653-655). Includes supporting online material. http://www.sciencemag.org/cgi/content/full/330/6004/653
title: The use and quality of Q methodology in nursing research: A scoping review
Creators: name: 彭姜芸
Publisher: name: OSF Registries
Year: 2025
Subjects: subject: Medicine and Health Sciences
subject: Geriatric Nursing
subject: Public Health and Community Nursing
subject: Nursing
subject: FOS: Health sciences
subject: Nursing；Q methodology

description: Q methodology is gradually being applied in the field of nursing. Q methodology combines techniques from qualitative and quantitative methods: the goal is to uncover different patterns of thought rather than their numerical distribution among the larger population. In other words, the number of participants is not the important issue; rather, it is the representation of different points of view about the topic of study. However, its use and report quality in nursing studies remains unclear.
Synthetic applications of eosin Y in photoredox catalysis
Creators: name: Hari, Durga Prasad
name: König, Burkhard
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: 540 Chemie

description: Eosin Y, a long known dye molecule, has recently been widely applied as a photoredox catalyst in organic synthesis. Low cost and good availability make eosin Y an attractive alternative to typical inorganic transition metal photocatalysts. We summarize the key photophysical properties of the dye and the recent synthetic applications in photoredox catalysis.
description: Open-Access-Komponente aus der Allianzlizenz
A method for generating realistic correlation matrices
Creators: name: Hardin, Johanna
name: Garcia, Stephan Ramon
name: Golan, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistics Theory (math.ST)
subject: Applications (stat.AP)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: Simulating sample correlation matrices is important in many areas of statistics. Approaches such as generating Gaussian data and finding their sample correlation matrix or generating random uniform $[-1,1]$ deviates as pairwise correlations both have drawbacks. We develop an algorithm for adding noise, in a highly controlled manner, to general correlation matrices. In many instances, our method yields results which are superior to those obtained by simply simulating Gaussian data. Moreover, we demonstrate how our general algorithm can be tailored to a number of different correlation models. Using our results with a few different applications, we show that simulating correlation matrices can help assess statistical methodology.
description: Published in at http://dx.doi.org/10.1214/13-AOAS638 the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Electric control of tunneling energy in graphene double dots
Creators: name: Raith, Martin
name: Ertler, Christian
name: Stano, Peter
name: Wimmer, Michael
name: Fabian, Jaroslav
Publisher: name: Universität Regensburg
Year: 2014
Subjects: subject: graphene, quantum dots
subject: 530 Physik

description: We theoretically investigate the spectrum of a single electron double quantum dot, defined by top gates in a graphene with a substrate-induced gap. We examine the effects of electric and magnetic fields on the spectrum of localized states, focusing on the tunability of the interdot coupling. We find that the substrate-induced gap allows for electrostatic control, with some limitations that for a fixed interdot distance, the interdot coupling cannot be made arbitrarily small due to the Klein tunneling. On the other hand, the proximity of the valence band in graphene allows for new regimes, such as an npn double dot, which have no counterparts in GaAs.