cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Convolutional neural network for drowsiness detection using EEG signals
Creators: name: Chaabene, Siwar
name: Bouaziz, Bassem
name: Boudaya, Amal
name: Hökelmann, Anita
name: Ammar, Achraf
name: Chaari, Lotfi
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: Drowsiness detection
subject: EEG signals
subject: Emotiv EPOC+;
subject: Deep learning
subject: Data augmentation
subject: Convolutional neural networks
subject: 796

description: Drowsiness detection (DD) has become a relevant area of active research in biomedical signal processing. Recently, various deep learning (DL) researches based on the EEG signals have been proposed to detect fatigue conditions. The research presented in this paper proposes an EEG classification system for DD based on DL networks. However, the proposed DD system is mainly realized into two procedures; (i) data acquisition and (ii) model analysis. For the data acquisition procedure, two key steps are considered, which are the signal collection using a wearable Emotiv EPOC+ headset to record 14 channels of EEG, and the signal annotation. Furthermore, a data augmentation (DA) step has been added to the proposed system to overcome the problem of over-fitting and to improve accuracy. As regards the model analysis, a comparative study is also introduced in this paper to argue the choice of DL architecture and frameworks used in our DD system. In this sense, The proposed DD protocol makes use of a convolutional neural network (CNN) architecture implemented using the Keras library. The results showed a high accuracy value (90.42%) in drowsy/awake discrimination and revealed the efficiency of the proposed DD system compared to other research works.
HUMAN HEALTH AND ITS DEPENDENCE ON NATURAL, INDUSTRIAL ENVIRONMENTAL FACTORS
Creators: name: M.S. Sedinina
name: M.S. Volokhova
name: O.V. Kishka
Publisher: name: Zenodo
Year: 2023

description: Human health is one of the most important components of his quality of life. However, in the modern world, we are increasingly faced with problems related to the influence of the environment on our health. Natural and industrial factors have a significant impact on our physical and mental well-being. Therefore, the study of this problem is an urgent and urgent task.
Indications of early thermalization in relativistic heavy-ion collisions
Creators: name: Bozek, Piotr
name: Wyskiel-Piekarska, Iwona
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The directed flow of particles emitted from the fireball created in a heavy-ion collision is shown to be a very sensitive measure of the pressure equilibration in the first 1 fm/c of the evolution. Performing a 3+1 dimensional relativistic hydrodynamic calculation with nonequilibrated longitudinal and transverse pressures, we show that the directed flow is strongly reduced if the pressure imbalance survives for even a short time. Transverse momentum spectra, elliptic flow and interferometry correlation radii are not very sensitive to this early pressure anisotropy. Comparison with the data points toward a short equilibration time of the order of $0.25$fm/c or less.
Metric compactifications and coarse structures
Creators: name: Mine, Kotaro
name: Yamashita, Atsushi
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Topology (math.GN)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 51F99, 53C23, 54C20, 18B30

description: Let $\mathbf{TB}$ be the category of totally bounded, locally compact metric spaces with the $C_0$ coarse structures. We show that if $X$ and $Y$ are in $\mathbf{TB}$ then $X$ and $Y$ are coarsely equivalent if and only if their Higson coronas are homeomorphic. In fact, the Higson corona functor gives an equivalence of categories $\mathbf{TB}\to\mathbf{K}$, where $\mathbf{K}$ is the category of compact metrizable spaces. We use this fact to show that the continuously controlled coarse structure on a locally compact space $X$ induced by some metrizable compactification $\tilde{X}$ is determined only by the topology of the remainder $\tilde{X}\setminus X$.
description: 16 pages. v3: Corrected typos. v2: Title changed from "$C_0$ coarse structures and Smirnov compactifications". Considerable improvements in the proofs of the main theorem (Theorem 4.5) and an important lemma (Lemma 3.7). New results in the final section (Theorem 4.12 among others)
Model independent analysis of polarization effects in elastic proton-electron scattering
Creators: name: Gakh, G. I.
name: Dbeyssi, A.
name: Marchand, D.
name: Gustafsson, E. Tomasi
name: Bytev, V. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The experimental observables for the elastic reaction induced by protons on electrons are calculated in the Born approximation. Model independent expressions are derived for the differential cross section and polarization observables. Numerical estimations are given for spin correlation coefficients, polarization transfer coefficients and depolarization coefficients, in a wide kinematical range. Specific attention is given to the kinematical conditions, i.e., to the specific range of incident energy and transferred momentum.
description: 26 pages 10 figures 2 tables
1+1 Gaudin Model
Creators: name: Zotov, Andrei V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We study 1+1 field-generalizations of the rational and elliptic Gaudin models. For ${\rm sl}(N)$ case we introduce equations of motion and L-A pair with spectral parameter on the Riemann sphere and elliptic curve. In ${\rm sl}(2)$ case we study the equations in detail and find the corresponding Hamiltonian densities. The $n$-site model describes $n$ interacting Landau-Lifshitz models of magnets. The interaction depends on position of the sites (marked points on the curve). We also analyze the 2-site case in its own right and describe its relation to the principal chiral model. We emphasize that 1+1 version impose a restriction on a choice of flows on the level of the corresponding 0+1 classical mechanics.
Optimization-based tuning of a hybrid UKF state estimator with tire model adaption for an all wheel drive electric vehicle
Creators: name: Heidfeld, Hannes
name: Schünemann, Martin
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: Nonlinear state and parameter estimation
subject: Electric vehicle
subject: Vehicle dynamics
subject: 621.8

description: Novel drivetrain concepts such as electric direct drives can improve vehicle dynamic control due to faster, more accurate, and more flexible generation of wheel individual propulsion and braking torques. Exact and robust estimation of vehicle state of motion in the presence of unknown disturbances, such as changes in road conditions, is crucial for realization of such control systems. This article shows the design, tuning, implementation, and test of a state estimator with individual tire model adaption for direct drive electric vehicles. The vehicle dynamics are modeled using a double-track model with an adaptive tire model. State-of-the-art sensors, an inertial measurement unit, steering angle, wheel speed, and motor current sensors are used as measurements. Due to the nonlinearity of the vehicle model, an Unscented KALMAN Filter (UKF) is used for simultaneous state and parameter estimation. To simplify the difficult task of UKF tuning, an optimization-based method using real-vehicle data is utilized. The UKF is implemented on an electronic control unit and tested with real-vehicle data in a hardware-in-the-loop simulation. High precision even in severe driving maneuvers under various road conditions is achieved. Nonlinear state and parameter estimation for all wheel drive electric vehicles using UKF and optimization-based tuning is shown to provide high precision with minimal manual tuning effort.
title: Chronologie: Kommissionen und Arbeitsgruppen 1956–2019
title: erstellt von Tamara Frömel
titleType: Subtitle
Creators: name: Frömel, Tamara
Publisher: name: Graz University Library Publishing
Year: 2021

description: 75 Jahre VÖB. 1946–2021, Hg. v. Alker-Windbichler, Bauer und Köstner-Pemsel, 2021, S. 443–456
Analytical treatment of SUSY Quasi-normal modes in a non-rotating Schwarzschild black hole
Creators: name: Sanchez, Pablo Alejandro
name: Romero, Jesus Martin
name: Bellini, Mauricio
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We use the Fock-Ivanenko formalism to obtain the Dirac equation which describes the interaction of a massless 1/2-spin neutral fermion with a gravitational field around a Schwarzschild black hole (BH). We obtain approximated analytical solutions for the eigenvalues of the energy (quasi-normal frequencies) and their corresponding eigenstates (quasi-normal states). The interesting result is that all the excited states [and their supersymmetric (SUSY) partners] have a purely imaginary frequency, which can be expressed in terms of the Hawking temperature. Furthermore, as one expects for SUSY Hamiltonians, the isolated bottom state has a real null energy eigenvalue.
description: Version to be published in European Physical Journal C
Chebyshev-Edgeworth-type Approximations for statistics based on samples with random sizes
Creators: name: Christoph, Gerd
name: Ulyanov, Vladimir V.
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2021
Subjects: subject: Second-order expansions
subject: Random sample size
subject: Asymptotically normal statistics
subject: Laplace and generalized Laplace distribution
subject: Weighted sums of generalized gamma distributions
subject: 510.72

description: Second-order Chebyshev–Edgeworth expansions are derived for various statistics from samples with random sample sizes, where the asymptotic laws are scale mixtures of the standard normal or chi-square distributions with scale mixing gamma or inverse exponential distributions. A formal construction of asymptotic expansions is developed. Therefore, the results can be applied to a whole family of asymptotically normal or chi-square statistics. The random mean, the normalized Student t-distribution and the Student t-statistic under non-normality with the normal limit law are considered. With the chi-square limit distribution, Hotelling’s generalized T2 0 statistics and scale mixture of chi-square distributions are used. We present the first Chebyshev–Edgeworth expansions for asymptotically chi-square statistics based on samples with random sample sizes. The statistics allow non-random, random, and mixed normalization factors. Depending on the type of normalization, we can find three different limit distributions for each of the statistics considered. Limit laws are Student t-, standard normal, inverse Pareto, generalized gamma, Laplace and generalized Laplace as well as weighted sums of generalized gamma distributions. The paper continues the authors’ studies on the approximation of statistics for randomly sized samples.
Tail behavior of stationary solutions of random difference equations: the case of regular matrices
Creators: name: Alsmeyer, Gerold
name: Mentemeier, Sebastian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Given a sequence $(M_{n},Q_{n})_{n\ge 1}$ of i.i.d. random variables with generic copy $(M,Q)$ such that $M$ is a regular $d\times d$ matrix and $Q$ takes values in $\mathbb{R}^{d}$, we consider the random difference equation (RDE) $R_{n}=M_{n}R_{n-1}+Q_{n}$, $n\ge 1$. Under suitable assumptions, this equation has a unique stationary solution $R$ such that, for some $κ>0$ and some finite positive and continuous function $K$ on $S^{d-1}:=\{x \in \mathbb{R}^{d}:|x|=1\}$, $ \lim_{t \to \infty} t^κ P(xR>t)=K(x)$ for all $x \in S^{d-1} $ holds true. This result is originally due to Kesten and Le Page. The purpose of this article is to show how regeneration methods can be used to provide a much shorter argument (in particular for the positivity of K). It is based on a multidimensional extension of Goldie's implicit renewal theory.
Calonectria species diversity on eucalypts in Indonesia
Creators: name: Tarigan, Marthin
name: Pham, Nam Q
name: Jami, Fahimeh
name: Oliveira, Leonardo SS
name: Saha, Muhammad Agni
name: Durán, Alvaro
name: Wingfield, Michael J
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: Diseases increasingly threaten the rapidly expanding eucalypt plantation industry of Indonesia. Of these, leaf blight caused by Calonectria spp. is considered amongst the more important problems, causing losses both in production nurseries and plantations. Using DNA sequence data based on the translation elongation factor 1-alpha, β-tubulin, calmodulin, and histone H3 gene regions, 163 isolates of Calonectria spp. obtained from diseased eucalypt seedlings in nurseries and infected leaves in plantations were identified as Calonectria acicola, C. hawksworthii, C. lombardiana, C. multiseptata, C. pseudoreteaudii and C. reteaudii. Of these, C. lombardiana was by far the most commonly isolated and accounted for approximately 84% of the isolates. Given the predominance of this fungus, it is interesting that it has not previously been reported from Indonesia. This is also the first report of C. pseudoreteaudii and C. acicola from the country. All six species of Calonectria were found to be pathogenic to eucalypts in artificial inoculation studies. Calonectria lombardiana was generally the most pathogenic species and eucalypt genotypes displayed different levels of susceptibility, providing confidence that disease caused by this fungus can be reduced by selecting disease-tolerant planting stock.
One- versus two-pole $\bar{K}N - πΣ$ potential: $K^- d$ scattering length
Creators: name: Shevchenko, N. V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigated the dependence of the $K^- d$ scattering length on models of $\bar{K}N$ interaction with one or two poles for $Λ(1405)$ resonance. The $\bar{K}NN - πΣN$ system is described by coupled-channel Faddeev equations in AGS form. Our new two-body $\bar{K}N - πΣ$ potentials reproduce all existing experimental data on $K^- p$ scattering and kaonic hydrogen atom characteristics. New models of $ΣN - ΛN$ interaction were also constructed. Comparison with several approximations, usually used for scattering length calculations, was performed.
description: 30 pages, 4 tables, 13 figures; corrected style and English, added 2 references and comments, shortened Section II and III A, more detailed discussion of the results, results unchanged
Controlled coupling of spin-resolved quantum Hall edge states
Creators: name: Karmakar, Biswajit
name: Venturelli, Davide
name: Chirolli, Luca
name: Taddei, Fabio
name: Giovannetti, Vittorio
name: Fazio, Rosario
name: Roddaro, Stefano
name: Biasiol, Giorgio
name: Sorba, Lucia
name: Pellegrini, Vittorio
name: Beltram, Fabio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Topologically-protected edge states are dissipationless conducting surface states immune to impurity scattering and geometrical defects that occur in electronic systems characterized by a bulk insulating gap. One example can be found in a two-dimensional electron gas (2DEG) under high magnetic field in the quantum Hall regime. Based on the coherent control of the coupling between these protected states, several theoretical proposals for the implementation of information processing architectures were proposed. Here we introduce and experimentally demonstrate a new method that allows us to controllably couple co-propagating spin-resolved edge states of a QH insulator. The scheme exploits a spatially-periodic in-plane magnetic field that is created by an array of Cobalt nano-magnets placed at the boundary of the 2DEG. A maximum charge/spin transfer of about 28% is achieved at 250 mK. This result may open the way to the realization of scalable quantum-information architectures exploiting the spin degree of freedom of topologically-protected states.
description: 9 pages, 8 figures
Open Access - Eine Herausforderung für kleinere Bibliotheken?
Creators: name: Paß, Stefanie
name: Rumler, Jana
name: Schindler, Clara
Publisher: name: Zenodo
Year: 2021
Subjects: Museumsbibliotheken
Spezialbibliotheken
Open-Access-Transformation
Organisationsentwicklung

description: Das Museum für Naturkunde Berlin ist ein integriertes Forschungsmuseum in der Leibniz-Gemeinschaft. Es ist ein Ort, an dem sich Wissenschaft und Gesellschaft treffen und stärkt die Wissensgesellschaft durch den freien Zugang zu Informationen und Forschungsinfrastrukturen, sowie durch die Öffnung seiner Forschung im Sinne von Open Science.
 Die Bibliothek des Museums trägt dazu bei, indem sie Open Access (OA) innerhalb und außerhalb der Institution fördert. Dies ist nicht zuletzt ein Verdienst der Koordinierungsstelle für wissenschaftliches Publizieren. Die Stelle wurde 2017 in der Bibliothek eingerichtet und unterstützt bei Fragen rund um den wissenschaftlichen Publikationsprozess, beim Reporting zum wissenschaftlichen Output, beim Lizenzmanagement sowie den Transformationsverträgen und in der Erstellung bzw. Erneuerung der Open Access Leitlinie. Darüber hinaus ist die Koordinationsstelle für das Article Approving Management und die interne Koordination der Publikationskosten zuständig. All diese Aufgabenbereiche sowie die zukünftigen Aktivitäten zur Umsetzung und Förderung von Open Access in der Einrichtung, wie beispielsweise die Einrichtung eines hauseigenen Publikationsfonds, sind Herausforderungen, die in großen wissenschaftlichen Bibliotheken längst umgesetzt sind.
 Dies wirft die Frage auf, wie groß die Kluft bei der Umsetzung von Open Access zwischen großen und kleinen Bibliotheken ist. Was sind die größten Hindernisse, mit denen kleinere Einrichtungen wie Spezial- und Museumsbibliotheken konfrontiert sind? Gibt es Best Practices, die in anderen Einrichtungen übernommen werden könnten? Um dies herauszufinden, wurde im Frühjahr 2021 eine Umfrage unter Museumsbibliotheken durchgeführt, deren Ergebnisse bei den Open Access Tagen 2021 vorgestellt werden.
 Wir hoffen aus den Ergebnissen heraus Möglichkeiten zu identifizieren, um die Kluft zwischen den verschiedenen Bibliotheken zu verringern und im besten Fall Strukturen zu schaffen, die kleineren Bibliotheken helfen, Open Access und Open Science in ihren Einrichtungen zu fördern.
Width of the QCD transition in a Polyakov-loop DSE model
Creators: name: Horvatic, D.
name: Blaschke, D.
name: Klabucar, D.
name: Kaczmarek, O.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the pseudocritical temperatures for the chiral and deconfinement transitions within a Polyakov-loop Dyson-Schwinger equation approach which employs a nonlocal rank-2 separable model for the effective gluon propagator. These pseudocritical temperatures differ by a factor of two when the quark and gluon sectors are considered separately, but get synchronized and become coincident when their coupling is switched on. The coupling of the Polyakov-loop to the chiral quark dynamics narrows the temperature region of the QCD transition in which chiral symmetry and deconfinement is established. We investigate the effect of rescaling the parameter T_0 in the Polyakov-loop potential on the QCD transition for both the logarithmic and polynomial forms of the potential. While the critical temperatures vary in a similar way, the width of the transition is stronger affected for the logarithmic potential. For this potential the character of the transition changes from crossover to a first order one when T_0 < 210 MeV, but it remains crossover in the whole range of relevant T_0 values for the polynomial form.
description: 10 pages, 6 figures, results for polynomial form of Polyakov-loop potential included, references added, final version to appear in Phys. Rev. D
Relativistic linear stability equations for the nonlinear Dirac equation in Bose-Einstein condensates
Creators: name: Haddad, L. H.
name: Carr, L. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present relativistic linear stability equations (RLSE) for quasi-relativistic cold atoms in a honeycomb optical lattice. These equations are derived from first principles and provide a method for computing stabilities of arbitrary localized solutions of the nonlinear Dirac equation (NLDE), a relativistic generalization of the nonlinear Schrödinger equation. We present a variety of such localized solutions: skyrmions, solitons, vortices, and half-quantum vortices, and study their stabilities via the RLSE. When applied to a uniform background, our calculations reveal an experimentally observable effect in the form of Cherenkov radiation. Remarkably, the Berry phase from the bipartite structure of the honeycomb lattice induces a boson-fermion transmutation in the quasi-particle operator statistics.
description: 6 pages, 3 figures
Space as a low-temperature regime of graphs
Creators: name: Conrady, Florian
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: I define a statistical model of graphs in which 2-dimensional spaces arise at low temperature. The configurations are given by graphs with a fixed number of edges and the Hamiltonian is a simple, local function of the graphs. Simulations show that there is a transition between a low-temperature regime in which the graphs form triangulations of 2-dimensional surfaces and a high-temperature regime, where the surfaces disappear. I use data for the specific heat and other observables to discuss whether this is a phase transition. The surface states are analyzed with regard to topology and defects.
description: 22 pages, 12 figures; v3: published version; J.Stat.Phys. 2011
title: Personenregister mit Kurzbiografien
Creators: name: Alker-Windbichler, Stefan
name: Köstner-Pemsel, Christina
name: Bauer, Bruno
Publisher: name: Graz University Library Publishing
Year: 2021

description: 75 Jahre VÖB. 1946-2021, Graz : Graz University Library Publishing, 2021 (Schriften der Vereinigung Österreichischer Bibliothekarinnen und Bibliothekare (VÖB). 16), S. 461-508
Printability of highly viscous composite slurries via reactive extrusion additive manufacturing
Creators: name: Koirala, Pratik
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Additive manufacturing
Reactive extrusion
Thermosetting polymer additive manufacturing
Printability of thermoset

description: Additive manufacturing (AM) can enable the fabrication of strong and stiff composite parts with complex geometries and without the need for expensive tools and molds. Current composite AM technologies are slow, energy-intensive, and their resulting parts usually suffer poor inter-laminar properties. This paper investigates the printability of carbon fiber filled thermosetting polymers via a novel AM technique, reactive extrusion AM (REAM). In REAM the resin and curing agent from two separate reservoirs are pumped and mixed directly inside the nozzle and deposited layer-by-layer onto a print-bed. The process utilizes exothermic resin/catalyst systems with fast curing cycles, eliminating the need for post-curing and external energy sources. Chemical cross-linking occurs between the printed layers, resulting in parts with relatively isotropic properties. Viscous properties of the thermosetting polymer are tuned using additives (e.g., fumed silica) to ensure printability while achieving sufficient storage modulus/shear yield strength to hold the shape after printing. Similarly, carbon fibers can be added to tune the viscosity and reinforce the resin. While high carbon fiber loadings are desired for improved mechanical properties, it is difficult to print highly loaded resins due to their excessive viscosity. An integrated experimental/numerical study is performed to examine the printability of a highly viscous 30 wt.% carbon fiber filled resin based on the rheology and pump pressure required for the REAM. Temperature and shear thinning were found to control the process and allow for tuning the rheology of the slurries for REAM printability.
Averaging along Uniform Random Integers
Creators: name: Janvresse, Élise
name: De La Rue, Thierry
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Motivated by giving a meaning to "The probability that a random integer has initial digit d", we define a URI-set as a random set E of natural integers such that each n>0 belongs to E with probability 1/n, independently of other integers. This enables us to introduce two notions of densities on natural numbers: The URI-density, obtained by averaging along the elements of E, and the local URI-density, which we get by considering the k-th element of E and letting k go to infinity. We prove that the elements of E satisfy Benford's law, both in the sense of URI-density and in the sense of local URI-density. Moreover, if b_1 and b_2 are two multiplicatively independent integers, then the mantissae of a natural number in base b_1 and in base b_2 are independent. Connections of URI-density and local URI-density with other well-known notions of densities are established: Both are stronger than the natural density, and URI-density is equivalent to log-density. We also give a stochastic interpretation, in terms of URI-set, of the H_\infty-density.
Constraint from recent ATLAS results on non-universal sfermion mass models and naturalness
Creators: name: Sakurai, Kazuki
name: Takayama, Kenichi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We investigate the impact of recent direct supersymmetry (SUSY) searches on a non-universal sfermion mass scenario focusing on naturalness. One of the advantages of this scenario is that the non-universality between third generation and first two generation sfermion masses can relax the tension between naturalness and constraints from flavour and CP violating observables. In the parameter region, where various phenomenological constraints are satisfied, the constraints to this scenario from ATLAS 165pb-1 "0-lepton" search and 35pb-1 "b-jet" search are much weaker than those to the constrained minimal SUSY standard model, because of differences in the main SUSY production processes and the main decay chains. Naturalness can be easily achieved in this scenario in accord with the current direct SUSY searches. An additional dedicated analysis may be needed to discover/exclude this scenario.
description: 15 pages, 7 figures, 2 tables
Nonlinear optical properties of TeO$_2$ crystalline phases from first principles
Creators: name: Berkaine, Nabil
name: Orhan, Emmanuelle
name: Masson, Olivier
name: Thomas, Philippe
name: Junquera, Javier
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We have computed second and third nonlinear optical susceptibilities of two crystalline bulk tellurium oxide polymorphs: $α$-TeO$_{2}$ (the most stable crystalline bulk phase) and $γ$-TeO$_{2}$ (the crystalline phase that ressembles the more to the glass phase. Third order nonlinear susceptibilities of the crystalline phases are two orders of magnitude larger than $α$-SiO$_{2}$ cristoballite, thus extending the experimental observations on glasses to the case of crystalline compounds. While the electronic lone pairs of Te contribute to those large values, a full explanation of the anisotropy of the third order susceptibility tensor requires a detailed analysis of the structure, in particular the presence of helical chains, that seems to be linked to cooperative non-local polarizabilty effects. Our results demonstrate that first-principles simulations are a powerful predictive tool to estimate nonlinear optical susceptibilitites of materials.
description: 12 pages, 6 figures. Typos in Eq.(9) and Eq. (12) corrected
Multi-walker discrete time quantum walks on arbitrary graphs, their properties, and their photonic implementation
Creators: name: Rohde, Peter P.
name: Schreiber, Andreas
name: Stefanak, Martin
name: Jex, Igor
name: Silberhorn, Christine
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum walks have emerged as an interesting alternative to the usual circuit model for quantum computing. While still universal for quantum computing, the quantum walk model has very different physical requirements, which lends itself more naturally to some physical implementations, such as linear optics. Numerous authors have considered walks with one or two walkers, on one dimensional graphs, and several experimental demonstrations have been performed. In this paper we discuss generalizing the model of discrete time quantum walks to the case of an arbitrary number of walkers acting on arbitrary graph structures. We present a formalism which allows for analysis of such situations, and several example scenarios for how our techniques can be applied. We consider the most important features of quantum walks -- measurement, distinguishability, characterization, and the distinction between classical and quantum interference. We also discuss the potential for physical implementation in the context of linear optics, which is of relevance to present day experiments.
Cold Dark Matter Hypotheses in the MSSM
Creators: name: AbdusSalam, S. S.
name: Quevedo, F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We perform a Bayesian model selection analysis in the the R-parity conserving MSSM to compare two different assumptions: whether the lightest neutralinos make all or only part of the cold dark matter. This corresponds to either imposing full WMAP relic density limits or just its upper bound for constraining the MSSM parameters. We consider several realisations of the MSSM, namely, three GUT-scale SUSY breaking scenarios with a handful of parameters corresponding to the CMSSM, anomaly mediation and the large volume string scenarios as well as the weak-scale 25-parameter phenomenological MSSM (pMSSM). The results give a data-based quantitative evidence for a multicomponent cold dark matter. The pMSSM posterior samples indicate that the choice of imposing full WMAP limits or just its upper bound affects mostly the gaugino-higgsino content of the neutralino and, against naive expectations, essentially not any other sector.
description: version to appear in Physcis Letters B
The nucleon axial mass and the MiniBooNE Quasielastic Neutrino-Nucleus Scattering problem
Creators: name: Nieves, J.
name: Simo, I. Ruiz
name: Vacas, M. J. Vicente
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The charged-current double differential neutrino cross section, measured by the MiniBooNE Collaboration, has been analyzed using a microscopical model that accounts for, among other nuclear effects, long range nuclear (RPA) correlations and multinucleon scattering. We find that MiniBooNE data are fully compatible with the world average of the nucleon axial mass in contrast with several previous analyses which have suggested an anomalously large value. We also discuss the reliability of the algorithm used to estimate the neutrino energy.
description: 6 pages and 3 figures. This version matches accepted version for publication in Physics Letters B
Improving Sensitivity to Weak Pulsations with Photon Probability Weighting
Creators: name: Kerr, Matthew
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: All gamma-ray telescopes suffer from source confusion due to their inability to focus incident high-energy radiation, and the resulting background contamination can obscure the periodic emission from faint pulsars. In the context of the Fermi Large Area Telescope, we outline enhanced statistical tests for pulsation in which each photon is weighted by its probability to have originated from the candidate pulsar. The probabilities are calculated using the instrument response function and a full spectral model, enabling powerful background rejection. With Monte Carlo methods, we demonstrate that the new tests increase the sensitivity to pulsars by more than 50% under a wide range of conditions. This improvement may appreciably increase the completeness of the sample of radio-loud gamma-ray pulsars. Finally, we derive the asymptotic null distribution for the H-test, expanding its domain of validity to arbitrarily complex light curves.
description: 10 pages, 11 figures, published by ApJ; v2 fixes an error in Eq. 5
A silicon photonic circuit for optical trapping and characterization of single nanoparticles
Creators: name: Mirsadeghi, Seyed Hamed
Publisher: name: University of British Columbia
Year: 2017

description: In this thesis, two slightly different silicon-on-insulator (Silicon-on-Insulator (SOI)) planar photonic integrated circuits for optically trapping and characterizing single nanoparticles are designed, fabricated, and fully characterized. These symmetric (input/output) structures are formed by etching two dimensional patterns through a 220 nm thick silicon slab atop a micrometer thick layer of silicon dioxide, and are operated in a fluidic cell at wavelengths of ≈ 1.55 μm. Each consist of two grating couplers, two parabolic tapered waveguides, two single mode ridge waveguides, two photonic crystal waveguides and a single photonic crystal slot (PCS) microcavity, designed using a Finite Difference Time Domain (FDTD) electromagnetic simulation tool. The circuits are designed to concentrate continuous wave laser light incident on the input grating coupler to a small volume within the fluidic channel of the microcavity in order to achieve a high electric field intensity gradient capable of attracting and trapping nanoparticles from the solution via optical gradient forces. The fabricated PCS cavities exhibit Q factors > 7500 and resonant transmissions as high as T = 6%, when operated in hexane and without undercutting the cavities. Due to fabrication imperfections, the cavity Q and peak transmission values were not as high as simulation predicted, nevertheless, these robust, devices were successfully used to optically trap single sub-50 nm Au nanospheres and nanorods with < 0.5 mW of laser power. Furthermore, it was found that while the particles were trapped, the transmitted laser intensity varied randomly in time, providing a simple means of characterizing the Brownian motion of the particle in the trap. The intensity variation is caused by the backaction of the dielectric object on the cavity resonance, the magnitude of which depends on the real part of the trapped particle’s polarizability tensor, and its position in the cavity. By exploiting this cavity-nanoparticle interaction, we developed a self-consistent analysis of the transmission signal of circuits that enabled us to determine the size and anisotropy of the trapped nanoparticles without any direct imaging, with nanometer sensitivity.
Parameter Estimation for the Stochastically Perturbed Navier-Stokes Equations
Creators: name: Cialenco, Igor
name: Glatt-Holtz, Nathan
Publisher: name: arXiv
Year: 2010
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 60H15, 35Q30, 65L09

description: We consider a parameter estimation problem to determine the viscosity $ν$ of a stochastically perturbed 2D Navier-Stokes system. We derive several different classes of estimators based on the first $N$ Fourier modes of a single sample path observed on a finite time interval. We study the consistency and asymptotic normality of these estimators. Our analysis treats strong, pathwise solutions for both the periodic and bounded domain cases in the presence of an additive white (in time) noise.
description: to appear in SPA
Spectrum Sharing between Cooperative Relay and Ad-hoc Networks: Dynamic Transmissions under Computation and Signaling Limitations
Creators: name: Sun, Yin
name: Zhong, Xiaofeng
name: Li, Yunzhou
name: Zhou, Shidong
name: Xu, Xibin
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: Optimization and Control (math.OC)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper studies a spectrum sharing scenario between a cooperative relay network (CRN) and a nearby ad-hoc network. In particular, we consider a dynamic spectrum access and resource allocation problem of the CRN. Based on sensing and predicting the ad-hoc transmission behaviors, the ergodic traffic collision time between the CRN and ad-hoc network is minimized subject to an ergodic uplink throughput requirement for the CRN. We focus on real-time implementation of spectrum sharing policy under practical computation and signaling limitations. In our spectrum sharing policy, most computation tasks are accomplished off-line. Hence, little real-time calculation is required which fits the requirement of practical applications. Moreover, the signaling procedure and computation process are designed carefully to reduce the time delay between spectrum sensing and data transmission, which is crucial for enhancing the accuracy of traffic prediction and improving the performance of interference mitigation. The benefits of spectrum sensing and cooperative relay techniques are demonstrated by our numerical experiments.
description: 5 pages, 3 figures, to appear in IEEE International Conference on Communications (ICC 2011)
title: Rekombinantes Surfactant Protein G - Optimierung der Expression und Aufreinigung sowie Charakterisierung
Creators: name: Sollfrank, Lukas
Publisher: name: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Year: 2025
Subjects: subject: Surfactant
subject: Surfactant Protein G
subject: rekombinant
subject: Phagozytose

description: Hintergrund und Ziele Surfactant (engl. Kunstwort: surface active agent) ist eine oberflächenaktive Substanz aus Lipiden und Proteinen, welche in der Lunge erstmalig beschrieben wurde und sowohl physikalische als auch immunologische Eigenschaften besitzt. Diese Eigenschaften sind zum großen Teil auf die sogenannten Surfactant Proteine (SP) zurückzuführen. Aktuell sind die sechs Surfactant Proteine SP-A, SP-B, SP-C, SP-D sowie SP-G und SP-H bekannt, wobei die letzten beiden genannten Proteine erst im Rahmen des Humangenomprojekts im Jahr 2003 als regulatorische RNA entdeckt und später als Proteine charakterisiert wurden. Ziel der vorliegenden Dissertation war es, das cDNA-Konstrukt für SP-G mit Hilfe von Escherichia coli rekombinant zu exprimieren und aufzureinigen, um später in vitro die Auswirkung auf die Phagozytose verschiedener Zelllinien zu untersuchen. Methoden Ein bestehendes Protokoll zur Expression in Escherichia coli wurde angepasst und die Aufreinigung durch Nickel-NTA-Affinitätschromatographie mittels ÄKTA™ Start automatisiert. Die Kontrolle auf Proteinniveau erfolgte mittels Western Blot. Nachfolgend erfolgten Phagozytoseunterschungen mit den Zelllinien MH-S, U837 und THP-1. Ergebnisse Das gewonnene rekombinante Protein konnte spezifisch durch einen SP-G Antikörper im Western-Blot bei 14 kDA nachgewiesen werden. Nachfolgende Experimente in einem externen Labor der Universität des Saarlandes konnten erstmalig eine signifikante Modulation der Phagozytose-Effizienz durch SP-G auf die humanen Zellreihen U937 und THP-1 zeigen. Schlussfolgerung und Diskussion Surfactant Proteine spielen eine wichtige Rolle bei der Immunabwehr viraler Erreger. Auch für SARS-CoV-2 konnten vor allem für SP-A, SP-B und SP-D spezifische Effekte beobachtet werden. Die hier vorgestellten Ergebnisse weisen darauf hin, dass auch SP-G immunologische Eigenschaften besitzt und somit für zukünftige Therapieansätze sowie der Prophylaxe von Infektionen einen interessanten neuen Angriffspunkt darstellen könnte. Hierfür ist die Möglichkeit der rekombinanten Produktion dieses Peptids essenziell.
Get Out the Vote (or Don’t): Evaluating Manipulation Methods in Russian National Elections from 2000 to 2021
Creators: name: Duval, Chloe
Publisher: name: University of Chicago
Year: 2022

description: It is not disputed that Russia’s elections under Vladimir Putin are fraudulent. Ballot stuffing to bolster the party’s vote share or turnout numbers is among one of the known tactics. Existing analyses of the Kremlin’s election manipulation either group together vote share and turnout fraud or evaluate them on a country-wide basis. Media noted the Kremlin’s particular focus on improving turnout in the lead-up to the 2018 election, but no project has yet evaluated if turnout was manipulated or to what extent. By conducting a two-tiered regional analysis of precinct-level election data spanning ten election years, I use the Integer Percentage Point method and Resampled Kernel Density tests to compare turnout and vote share abnormalities. I ask how the nature of election fraud has changed during Putin’s presidency. I find that, while vote share remains the primary number manipulated, ethnic republics exhibited different patterns of ballot stuffing than other regions. I suggest three implications of this work. First, that fraud is often easy to spot. Second, that election observers are a relevant policy response to election manipulation. Third, that turnout is a concern for the Kremlin, and should be considered in future analyses.
On the Relevance of Sharp Gamma-Ray Features for Indirect Dark Matter Searches
Creators: name: Bringmann, Torsten
name: Calore, Francesca
name: Vertongen, Gilles
name: Weniger, Christoph
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma rays from the annihilation of dark matter particles in the Galactic halo provide a particularly promising means of indirectly detecting dark matter. Here, we demonstrate that pronounced spectral features at energies near the dark matter particles' mass, which are a generic prediction for most models, can significantly improve the sensitivity of gamma-ray telescopes to dark matter signals. We derive projected limits on such features (including the traditionally looked-for line signals) and show that they can be much more efficient in constraining the nature of dark matter than the model-independent broad spectral features expected at lower energies.
description: 7 pages, 5 figures, 2 tables, extended version as published in PRD
Oceanicella
Creators: name: Albuquerque, Luciana
name: Egas, Conceição
Publisher: name: Zenodo
Year: 2020
Subjects: Hot springs
Slightly thermophilic
Slightly halophilic
Aerobic

description: The genus Oceanicella comprises one species named Oceanicella actignis. Members of this species possess pleomorphic cells ranging from rods to coccoid forms. The type strain of the species is nonmotile; some strains are motile. Cells stain Gram-negative and endospores are not observed. Colonies are nonpigmented. The species O. actignis is slightly thermophilic, slightly halophilic and strictly aerobic. Possess cytochrome c oxidase and is catalase positive. Chemoorganotrophic. Growth factors are not necessary for growth in minimal defined medium. Organic acids, amino acids and polyols are used as carbon and energy sources; sugars are not assimilated. Major respiratory quinone is ubiquinone 10 (U-10). Major polar lipids are phosphatidylcholine (PC), phosphatidylglycerol (PG) and one unidentified aminolipid (AL1). Fatty acids are primarily straight-chain. Isolated from marine and terrestrial saline hot springs. DNA G+C content is 71.2–72.4 mol% (HPLC and genome sequence). The type species is Oceanicella actignis. The genus belongs to the family Rhodobacteraceae.
Soliton form factors from lattice simulations
Creators: name: Rajantie, Arttu
name: Weir, David J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The form factor provides a convenient way to describe properties of topological solitons in the full quantum theory, when semiclassical concepts are not applicable. It is demonstrated that the form factor can be calculated numerically using lattice Monte Carlo simulations. The approach is very general and can be applied to essentially any type of soliton. The technique is illustrated by calculating the kink form factor near the critical point in 1+1-dimensional scalar field theory. As expected from universality arguments, the result agrees with the exactly calculable scaling form factor of the two-dimensional Ising model.
description: 5 pages, 3 figures; v2: discussion extended, references added, version accepted for publication in PRD
title: Untersuchung und Optimierung der drei Farben Fibroblasten Fluoreszenz in situ Hybridisierung zur Messung der Strahlenempfindlichkeit
Creators: name: Isufi, Arta
Publisher: name: Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
Year: 2025

description: Ziel dieser Arbeit ist die bereits vorhandene drei Farben Fluoreszenz in situ Hybrdisierungs-Methodik auf Fibroblasten zu erweitern und zu verbessern, um mithilfe der dadurch gewonnenen Ergebnisse eine Aussage über die chromosomalen Anomalien der Haut nach Bestrahlung zu erlangen, die Werte der verschiedenen Probanden zusammenzustellen und untereinander zu vergleichen. Hierzu wurde auf das Synchronisationsmittel Aphidicolin, den Einfluss von Colcemid, den Einsatz einer Cytofuge und die Modifikation des Nährmediums der Fibroblasten zurückgegriffen, um anschließend diese optimierte Vorgehensweise an 22 Patientenproben durchzuführen.
The iMagine AI platform for image analysis - Opportunities for aquatic sciences
Creators: name: Sipos, Gergely
Publisher: name: Zenodo
Year: 2023
Subjects: Artificial Intelligence
Machine Learning
marine and freshwaters research

description: Presentation given at the EGI2023 conference, in the session "Artificial Intelligence and Machine Learning in distributed/federated environments" jointly organised by AI4EOSC, AI4Europe and iMagine.The presentation offers an overview of the status of iMagine, its use cases and the iMagine AI Platform.