cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
`Exact' solutions of the full electrokinetic model for soft spherical colloids: Electrophoretic mobility
Creators: name: Hill, Reghan J.
name: Saville, D. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Numerical solutions of the standard electrokinetic model provide a basis for interpreting a variety of electrokinetic phenomena involving `bare' colloids. However, the model rests on the classical notion of a shear or slipping plane, whose location is unknown when surfaces are coated with permeable polymer. Consequently, an electrokinetic model for `soft', `hairy' or `fuzzy' colloids has been developed, but until recently solutions were available only for several restricted cases, most notably for particles with thin, uniform layers, and without polarization and relaxation. Here we present numerically exact solutions of the full model for a variety of soft colloids, including PEG-coated liposomes, PEO-coated latices, human erythrocytes, and polyelectrolyte micelles. Particular attention is given to linking the thickness, density and permeability of the coatings, which are key parameters in the model, to ``physical'' quantities, such as the polymer molecular weight, adsorbed amount, and hydrodynamic layer thickness. This paper also identifies limits--on the ionic strength, particle size, layer thickness and permeability--beyond which earlier theories breakdown. In short, polarization and relaxation are as influential on the mobility of soft colloids as they are for `bare' particles.
Investigation of $P_{cs}(4459)^0$ pentaquark via its strong decay to $ΛJ/Ψ$
Creators: name: Azizi, K.
name: Sarac, Y.
name: Sundu, H.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Recently the observation of a new pentaquark state, the hidden-charmed strange $P_{cs}(4459)^0$, was reported by the LHCb Collaboration. The spin-parity quantum numbers of this state were not determined as a result of insufficient statistics. To shed light on its quantum numbers, we investigate its decay, $P_{cs}(4459)^0 \rightarrow J/ψΛ$, the mode that this state has been observed, within the QCD sum rule framework. We obtain the width of this decay assigning the spin-parity quantum numbers of $P_{cs}(4459)^0$ state as $J^P=\frac{1}{2}^-$ and its substructure as diquark-diquark-antiquark. To this end, we first calculate the strong coupling constants defining the considered decay and then use them in the width calculations. The obtained width is consistent with the experimental observation, confirming the quantum numbers $J^P=\frac{1}{2}^-$ and compact pentaquark nature for $P_{cs}(4459)^0$ state.
description: 10 Pages, 2 Figures and 2 Tables
Ökumenische Versammlung Erfurt zwischen Resignation und Neuorientierung
Creators: name: Schlüter, Ulf
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 40 Nr. 3 (1991): Ökumenische Rundschau, Band 40, Heft 3
Wild, Johannes
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Borghorst bei Münster
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Wyler, Mayer & Sohn
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Endingen
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Motoneuron survival and axon regeneration following immediate versus delayed implantation of peripheral nerve graft into the spinal cord of adult rats with c5 and c6 root avulsion
Creators: name: Tarazi, Christine
Publisher: name: University of British Columbia
Year: 2009

description: Avulsion of spinal nerve roots is a CNS injury that results in motoneuron cell death and paralysis of the affected limb. It has been demonstrated in rats, cats and primates that following spinal nerve root avulsion injured motoneurons can extend axons into ventral roots or peripheral nerve (PN) grafts that have been immediately reimplanted into the spinal cord and result in functional reinnervation of denervated muscles. The effects of delayed PN graft implantation on motoneuron survival and axonal regeneration has not been studied in animals. Following avulsion of the left C5 and C6 ventral and dorsal roots in adult rats, the free end of a 3.5cm segment of common peroneal nerve was implanted into the ventrolateral area of the cord at C5 and C6. There were five groups of animals based on the time interval between root avulsion and PN graft implantation: immediate implantation, 1 week, 1 month, 2 months and 6 months. Two months after PN implantation, a fluorescent axonal tracer, Rhodamine-Dextran amine (RDA) was applied to the free end of the graft. Counts of RDA labeled neurons in the ipsilateral ventral horn were compared among the groups. Using the cell counts in the immediate implantation group (mean of 761 cells = 100%) as a reference for comparison, counts of RDA-labeled neurons was 82% at 1 week, 44% at 1 month and 38% at both 2 and 6 months. Counts were significantly lower in the 1, 2 and 6-month groups. To allow identification of C5 and C6 motoneurons, a separate group of experiments were done in which C5 and C6 motoneurons were labeled with another axonal tracer Fluorogold (FG) prior to avulsion, and PN grafts were implanted either immediately, 10 days or 1 month after root avulsion. Counts of FG, RDA or double-labeled neurons revealed that the % of ventral horn neurons that are G5 or C6 motoneurons are 31% (immediate), 33% (10 day) and 6% (1 month). A delay of 1 month in PN graft implantation resulted in a significant decrease in 1) the number of surviving C5 and C6 motoneurons; 2) the proportion of surviving C5 and C6 motoneurons that regenerated axons into the graft.
Persistent homology for functionals
Creators: name: Bauer, Ulrich
name: Medina-Mardones, Anibal M.
name: Schmahl, Maximilian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Algebraic Topology (math.AT)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 55N31, 58E05, 58E12, 54D05, 55N05

description: We introduce topological conditions on a broad class of functionals that ensure that the persistent homology modules of their associated sublevel set filtration admit persistence diagrams, which, in particular, implies that they satisfy generalized Morse inequalities. We illustrate the applicability of these results by recasting the original proof of the Unstable Minimal Surface Theorem given by Morse and Tompkins in a modern and rigorous framework.
description: 29 pages, 1 figure
Vischer (-Le Grand), -Valentin, W
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Secret key distillation over satellite-to-satellite free-space optics channel with a limited-sized aperture eavesdropper in the same plane of the legitimate receiver
Creators: name: Pan, Ziwen
name: Djordjevic, Ivan B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Conventionally, unconditional information security has been studied by quantum cryptography although the assumption of an omnipotent eavesdropper is too strict for some realistic implementations. In this paper, we study the realistic secret key distillation over a satellite-to-satellite free space optics channel where we assume a limited-sized aperture eavesdropper (Eve) in the same plane of the legitimate receiver (Bob) and determine the secret key rate lower bounds correspondingly. We first study the input power dependency without assumptions on Bob's detection scheme before optimizing the input power to determine lower bounds as functions of transmission distances, center frequency or Eve aperture radius. Then we calculate analytical expressions regarding the SKR lower bound and upper bound as transmission distance goes to infinity. We also incorporate specific discrete variable (DV) and continuous variable (CV) protocols for comparison. We demonstrate that significantly higher SKR lower bounds can be achieved compared to traditional unrestricted Eve scenario.
Key Factors Behind the Increase in Domestic and International Flights
Creators: name: frangieh, joseph
Publisher: name: Zenodo
Year: 2024

description: In my last article here on my profile, I talked about the peak in national and international passenger traffic in September and questioned what the key factors behind this trend might be. This increase reflects the continued recovery of the sector after the challenges faced during the pandemic. Some key points can be highlighted regarding this trend:

Post-Pandemic Recovery:The growth in the number of passengers is a positive sign of the sector’s recovery. Many people who had postponed travel are now returning to tourism and business trips.

Increased Confidence:With the progress of vaccination and the easing of restrictions, consumer confidence in traveling has increased. This has encouraged more people to choose flights, both domestic and international.

Route Expansion and Increased Flight Supply:Airlines are expanding their routes and increasing flight frequency, contributing to greater passenger traffic. This competitiveness can also lead to more affordable fares.

Changes in Consumer Behavior:The pandemic has changed travel habits, with a growing preference for nature destinations and regional tourism, which has influenced the rising demand on local routes.

Operational Challenges:Despite the increase in passenger volume, experts warn of operational challenges, such as the need for adequate airport infrastructure and efficient management to avoid delays and discomfort.

Increase in Personal Spending:Currently, people seem more willing to spend money—there’s a noticeable trend where the desire to travel often outweighs the urge to save. This is especially true in Brazil, where installment payment options make travel more accessible.

These combined factors suggest that Brazilian aviation may continue to grow, but attention to operational issues and the passenger experience will be crucial to sustaining this positive trajectory.
Cluster mean-field study of the parity conserving phase transition
Creators: name: Odor, Geza
name: Szolnoki, Attila
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The phase transition of the even offspringed branching and annihilating random walk is studied by N-cluster mean-field approximations on one-dimensional lattices. By allowing to reach zero branching rate a phase transition can be seen for any N <= 12.The coherent anomaly extrapolations applied for the series of approximations results in $ν_{\perp}=1.85(3)$ and $β=0.96(2)$.
description: 6 pages, 5 figures, 1 table included, Minor changes, scheduled for pubication in PRE
Varnhagen, G., & Söhne
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Dortmund
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Electronic Structure Calculations with Dynamical Mean-Field Theory: A Spectral Density Functional Approach
Creators: name: Kotliar, G.
name: Savrasov, S. Y.
name: Haule, K.
name: Oudovenko, V. S.
name: Parcollet, O.
name: Marianetti, C. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present a review of the basic ideas and techniques of the spectral density functional theory which are currently used in electronic structure calculations of strongly-correlated materials where the one-electron description breaks down. We illustrate the method with several examples where interactions play a dominant role: systems near metal-insulator transition, systems near volume collapse transition, and systems with local moments.
description: 88 pages. Submitted to Review of Modern Physics
Interactive alluvial plots - Management of invasive alien species in Spain: a bibliometric review
Creators: name: Muñoz-Mas, Rafael
name: Carrete, Martina
name: Castro-Díez, Pilar
name: Delibes-Mateos, Miguel
name: Jaques, Josep A.
name: López-Darias, Marta
name: Nogales, Manuel
name: Pino, Joan
name: Traveset, Anna
name: Turon, Xavier
name: Vilà, Montserrat
name: García-Berthou, Emili
Publisher: name: figshare
Year: 2021
Subjects: subject: 50103 Invasive Species Ecology
subject: FOS: Earth and related environmental sciences
subject: 150312 Organisational Planning and Management
subject: FOS: Economics and business
subject: 50211 Wildlife and Habitat Management
subject: 50205 Environmental Management
subject: 160507 Environment Policy
subject: FOS: Political science

description: Interactive alluvial diagrams relating i) methodological approach, ecosystem type, management topic, and spatial scale, ii) ecosystem type, treatment, and success and iii) treatment, species and, and success of the compiled documents on invasive alien species (IAS) management in Spain. For the latter case, both static (.tif) and dynamic figures (.html) are provided. Connection width is proportional to the number of documents. The category “Other” includes mulching, prevention, sterilization, heating, incineration, containment, baiting, restocking, DNA metabarcoding, insecticide, and genetic selection. These figures supplement those in the study:
Muñoz-Mas, R., Carrete, M., Castro-Díez, P., Delibes-Mateos, M., Jaques, J.A., López-Darias, M., Nogales, M., Pino, J., Traveset, A., Turon, X., Vilà, M., García-Berthou, E., 2021. Management of invasive alien species in Spain: A bibliometric review. NeoBiota 70, 123. https://doi.org/10.3897/neobiota.70.68202
Zuckschwerdt & Schneider
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Magdeburg
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Inner horizon instability and the unstable cores of regular black holes
Creators: name: Carballo-Rubio, Raúl
name: Di Filippo, Francesco
name: Liberati, Stefano
name: Pacilio, Costantino
name: Visser, Matt
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Regular black holes with nonsingular cores have been considered in several approaches to quantum gravity, and as agnostic frameworks to address the singularity problem and Hawking's information paradox. While in a recent work we argued that the inner core is destabilized by linear perturbations, opposite claims were raised that regular black holes have in fact stable cores. To reconcile these arguments, we discuss a generalization of the geometrical framework, originally applied to Reissner--Nordtsröm black holes by Ori, and show that regular black holes have an exponentially growing Misner--Sharp mass at the inner horizon. This result can be taken as an indication that stable nonsingular black hole spacetimes are not the definitive endpoint of a quantum gravity regularization mechanism, and that nonperturbative backreaction effects must be taken into account in order to provide a consistent description of the quantum-gravitational endpoint of gravitational stellar collapse.
description: 17 pages, 5 figures. Major changes in the presentation to improve clarity, physical conclusions unchanged, matches the version accepted on JHEP
The UV spectrum of HS1700+6416 II. FUSE observations of the HeII Lyman alpha forest
Creators: name: Fechner, C.
name: Reimers, D.
name: Kriss, G. A.
name: Baade, R.
name: Blair, W. P.
name: Giroux, M. L.
name: Green, R. F.
name: Moos, H. W.
name: Morton, D. C.
name: Scott, J. E.
name: Shull, J. M.
name: Simcoe, R.
name: Songaila, A.
name: Zheng, W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the far-UV spectrum of the quasar HS1700+6416 taken with FUSE. This QSO provides the second line of sight with the HeII absorption resolved into a Ly alpha forest structure. Since HS1700+6416 is slightly less redshifted (z=2.72) than HE2347-4342, we only probe the post-reionization phase of HeII, seen in the evolution of the HeII opacity, which is consistent with a simple power law. The HeII/HI ratio eta is estimated using a line profile-fitting procedure and an apparent optical depth approach, respectively. The expected metal line absorption in the far-UV is taken into account as well as molecular absorption of galactic H_2. About 27% of the eta values are affected by metal line absorption. In order to investigate the applicability of the analysis methods, we create simple artificial spectra based on the statistical properties of the HI Ly alpha forest. The analysis of the artificial data demonstrates that the apparent optical depth method as well as the line profile-fitting procedure lead to confident results for restricted data samples only (12.0 < log N(HI) < 13.0). The reasons are saturation in the case of the apparent optical depth and thermal line widths in the case of the profile fits. Furthermore, applying the methods to the unrestricted data set may mimic a correlation between eta and the strength of the HI absorption. For the restricted data samples a scatter of 10 - 15% in eta would be expected even if the underlying value is constant. The observed scatter is significantly larger than expected, indicating that the intergalactic radiation background is indeed fluctuating. In the redshift range 2.58 < z < 2.72, where the data quality is best, we find eta ~ 100, suggesting a contribution of soft sources like galaxies to the UV background.
description: 18 pages, 14 figures, accepted for publication in A&A
Wechsler, Friedrich, zur Krone
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Biberach
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Философия науки и формализация психологической теории
Creators: name: Эронен М.
name: Ромейн В.
Publisher: name: Теоретичні дослідження у психології
Year: 2021
Subjects: эпистемическая итерация
формализация
инструментализм
статистика
теория.

description: Одной из первоначальных целей этого журнала было продвижение теории в психологии. В настоящее время все больше и больше исследователей-психологов призывают к дальнейшему развитию теории, и статьи о «кризисе теории» также по-пали в основные журналы. В этой статье мы предлагаем продолжение этой теоретической дискуссии. За последнее столетие философия науки провела обширные дебаты о математизации природы и о роли математики в развитии теории а также связи теории с эмпирическими фактами. Мы показываем, что эти обсуждения всё ещё актуальны для нынешней психологии. В частности, мы подчеркиваем важность концептуальной работы в процессе математизации и роль математики в координации теории и наблюдений. Затем мы обсудим значение этих пунктов для статистически ориентированной психологии в целом и для недавних теоретических дебатов в психологии.
The hyperspace of non-cut subcontinua of graphs and dendrites
Creators: name: Hernández-Gutiérrez, Rodrigo
name: Martínez-de-la-Vega, Verónica
name: Martínez-Montejano, Jorge M.
name: Vega, Jorge E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Topology (math.GN)
subject: FOS: Mathematics
subject: 54F50, 54B20, 54E50, 54F15, 54F65

description: Given a continuum $X$, let $C(X)$ denote the hyperspace of all subcontinua of $X$. In this paper we study the Vietoris hyperspace $NC^{*}(X)=\{ A \in C(X):X\setminus A\text{ is connected}\}$ when $X$ is a finite graph or a dendrite; in particular, we give conditions under which $NC^{*}(X)$ is compact, connected, locally connected or totally disconnected. Also, we prove that if $X$ is a dendrite and the set of endpoints of $X$ is dense, then $NC^{*}(X)$ is homeomorphic to the Baire space of irrational numbers.
Weibel, J. J
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Bretzwil
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Splitting and merging an elongated Bose-Einstein condensate at finite temperature
Creators: name: Mebrahtu, A.
name: Sanpera, A.
name: Lewenstein, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We analyze coherence effects during the splitting of a quasi one-dimensional condensate into two spatially separated ones and their subsequent merging into a single condensate. Our analysis takes into account finite-temperature effects, where phase fluctuations play an important role. We show that, at zero-temperature, the two split condensates can be merged into a single one with a negligible phase difference. By increasing temperature to a finite value below the critical point for condensation ($T_c$), i.e., $0 \le T/T_c < 1$, a considerable enhancement of phase and density fluctuations appears during the process of splitting and merging. Our results show that if the process of splitting and merging is sufficiently adiabatic, the whole process is quite insensitive to phase fluctuations and even at high temperatures, a single condensate can be produced.
description: 8 pages, 6 figures
Interactive alluvial plots - Management of invasive alien species in Spain: a bibliometric review
Creators: name: Muñoz-Mas, Rafael
name: Carrete, Martina
name: Castro-Díez, Pilar
name: Delibes-Mateos, Miguel
name: Jaques, Josep A.
name: López-Darias, Marta
name: Nogales, Manuel
name: Pino, Joan
name: Traveset, Anna
name: Turon, Xavier
name: Vila, Montserrat
name: García-Berthou, Emili
Publisher: name: figshare
Year: 2021
Subjects: subject: 50103 Invasive Species Ecology
subject: FOS: Earth and related environmental sciences
subject: 150312 Organisational Planning and Management
subject: FOS: Economics and business
subject: 50211 Wildlife and Habitat Management
subject: 50205 Environmental Management
subject: 160507 Environment Policy
subject: FOS: Political science

description: Interactive alluvial diagrams relating i) methodological approach, ecosystem type, management topic, and spatial scale, ii) ecosystem type, treatment, and success and iii) treatment, species and, and success of the compiled documents on invasive alien species (IAS) management in Spain. For the latter case, both static (.tif) and dynamic figures (.html) are provided. Connection width is proportional to the number of documents. The category “Other” includes mulching, prevention, sterilization, heating, incineration, containment, baiting, restocking, DNA metabarcoding, insecticide, and genetic selection. These figures supplement those in the study:
Muñoz-Mas, R., Carrete, M., Castro-Díez, P., Delibes-Mateos, M., Jaques, J.A., López-Darias, M., Nogales, M., Pino, J., Traveset, A., Turon, X., Vilà, M., García-Berthou, E., 2021. Management of invasive alien species in Spain: A bibliometric review. NeoBiota 70, 123. https://doi.org/10.3897/neobiota.70.68202
Quality-Diversity Meta-Evolution: customising behaviour spaces to a meta-objective
Creators: name: Bossens, David M.
name: Tarapore, Danesh
Publisher: name: arXiv
Year: 2021
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: Artificial Intelligence (cs.AI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Quality-Diversity (QD) algorithms evolve behaviourally diverse and high-performing solutions. To illuminate the elite solutions for a space of behaviours, QD algorithms require the definition of a suitable behaviour space. If the behaviour space is high-dimensional, a suitable dimensionality reduction technique is required to maintain a limited number of behavioural niches. While current methodologies for automated behaviour spaces focus on changing the geometry or on unsupervised learning, there remains a need for customising behavioural diversity to a particular meta-objective specified by the end-user. In the newly emerging framework of QD Meta-Evolution, or QD-Meta for short, one evolves a population of QD algorithms, each with different algorithmic and representational characteristics, to optimise the algorithms and their resulting archives to a user-defined meta-objective. Despite promising results compared to traditional QD algorithms, QD-Meta has yet to be compared to state-of-the-art behaviour space automation methods such as Centroidal Voronoi Tessellations Multi-dimensional Archive of Phenotypic Elites Algorithm (CVT-MAP-Elites) and Autonomous Robots Realising their Abilities (AURORA). This paper performs an empirical study of QD-Meta on function optimisation and multilegged robot locomotion benchmarks. Results demonstrate that QD-Meta archives provide improved average performance and faster adaptation to a priori unknown changes to the environment when compared to CVT-MAP-Elites and AURORA. A qualitative analysis shows how the resulting archives are tailored to the meta-objectives provided by the end-user.
Magnetically Ejected Disks: Equatorial Outflows Near Vertically Magnetized Black Hole
Creators: name: Karas, Vladimir
name: Sapountzis, Kostas
name: Janiuk, Agnieszka
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Black holes attract gaseous material from the surrounding environment. Cosmic plasma is largely ionized and magnetized because of electric currents flowing in the highly conductive environment near black holes; the process of accretion then carries the magnetic flux onto the event horizon, $r\simeq R_+$. On the other hand, magnetic pressure acts against accretion. It can not only arrest the inflow but it can even push the plasma away from the black hole if the magnetic repulsion prevails. The black hole does not hold the magnetic field by itself. In this contribution we show an example of an equatorial outflow driven by a large scale magnetic field. We initiate our computations with a spherically symmetric distribution of gas, which flows onto the domain from a large distance, $r\gg R_+$. After the flow settles in a steady (Bondi) solution, we impose an axially symmetric configuration of a uniform (Wald) magnetic field aligned with the rotation axis of the black hole. Then we evolve the initial configuration numerically by employing the MHD code that approaches the force-free limit of a perfectly conducting fluid. We observe how the magnetic lines of force start accreting with the plasma while an equatorial intermittent outflow develops and goes on ejecting some material away from the black hole.
description: 14 pages, 7 figures, Proceedings of RAGtime: Workshops on black holes and neutron stars, http://proceedings.physics.cz/index.php/ragtime-book
Usteri, Gebrüder
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Localization, transport and edge states in a two-strand ladder network in an aperiodically staggered magnetic field
Creators: name: Sajid, Sk
name: Chakrabarti, Arunava
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the spectral and transport properties of a two-arm tight-binding ladder perturbed by an external magnetic field following an Aubry-André-Harper profile. The varying magnetic flux trapped in consecutive ladder-cells simulates an axial twist that enables us, in principle, to probe a wide variety of systems ranging from a ribbon Hofstadter geometry to helical DNA chains. We perform an in-depth numerical analysis, using a direct diagonalization of the lattice Hamiltonian to study the electronic spectra and transport properties of the model. We show that such a geometry creates a self-similar multifractal pattern in the energy landscape. The spectral properties are analyzed using the local density of states and a Green's function formalism is employed to obtain the two-terminal transmission probability. With the standard multifractal analysis and the evaluation of inverse participation ratio we show that, the system hosts both critical and extended phase for a slowly varying aperiodic sequence of flux indicating a possible mobility edge. Finally, we report signatures of topological edge modes that are found to be robust against a correlated perturbation given to the nearest neighbor hopping integrals. Our results can be of importance in experiments involving ladder-like quantum networks, realized with cold atoms in an optical trap setup.
description: 12 pages, 21 figures
Planar Voronoi cells : the violation of Aboav's law explained
Creators: name: Hilhorst, Hendrik-Jan
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: In planar cellular systems $m\_n$ denotes the average sidedness of a cell neighboring an $n$-sided cell. Aboav's empirical law states that $nm\_n$ is linear in $n$. A downward curvature is nevertheless observed in the numerical $nm\_n$ data of the Random Voronoi Froth. The exact large-N expansion of $m\_n$ obtained in the present work, {\it viz.} $m\_n=4+3(π/n)^{1/2}+...$, explains this curvature. Its inverse square root dependence on $n$ sets a new theoretical paradigm. Similar curved behavior may be expected, and must indeed be looked for, in experimental data of sufficiently high resolution. We argue that it occurs, in particular, in diffusion-limited colloidal aggregation on the basis of recent simulation data due to Fernández-Toledano {\it et al.} [{\it Phys. Rev. E} {\bf 71}, 041401 (2005)] and earlier experimental results by Earnshaw and Robinson [{\it Phys. Rev. Lett.} {\bf 72}, 3682 (1994)].
description: 25 pages
Wagner, Louis, & Co
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Mulhouse
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Tunesi, Fratelli, qm Carlo
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Chiavenna
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Energy conversion theorems for some linear steady-states
Creators: name: Arias-Hernandez, L. A.
name: Valencia-Ortega, G.
name: Angulo-Brown, F.
name: Martinez-Garcia, C. R.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: One of the main issues that real energy converters present, when they produce effective work, is the inevitable entropy production. Within the context of Non-equilibrium Thermodynamics, entropy production tends to energetically degrade man-made or living systems. On the other hand, it is also not useful to think about designing an energy converter that works in the so-called minimum entropy production regime since the effective power output and efficiency are zero. In this manuscript, we establish some \textit{Energy Conversion Theorems} similar to Prigogine's one with constrained forces, their purpose is to reveal trade-offs between design and the so-called operation modes for $\left(2\times2\right)$--linear isothermal energy converters. The objective functions that give rise to those thermodynamic constraints show stability. A two--meshes electric circuit was built as an example to demonstrate the Theorems' validity. Likewise, we reveal a type of energetic hierarchy for power output, efficiency and dissipation function when the circuit is tuned to any of the operating regimes studied here: maximum power output ($MPO$), maximum efficient power ($MPη$), maximum omega function ($MΩ$), maximum ecological function ($MEF$), maximum efficiency ($Mη$) and minimum dissipation function ($mdf$).
description: 33 pages, 15 figures, 2 tables
Mars casts his ballot: men and the gender gap in Canadian elections
Creators: name: Steele, Andrew Morgan
Publisher: name: University of British Columbia
Year: 2009

description: This study argues that previous investigations of the gender gap have concentrated almost exclusively on the behaviour of women voters and have underestimated the electoral significance of men. Employing public opinion surveys and rational choice theory of coalitions, it contends that men's voting behaviour is a key factor in modern elections and that by investigating male voters as people affected by their gender, the gender gap can be better explained. The study finds that the relative importance of the gender gap in Canada may be declining as parties contending to form the government display less gender division in their support, and significant gender differences in the 1997 election are found only in the more extreme parties, like the New Democratic Party and, especially, the Reform Party. Significant gender-related support for the Liberal Party is found to be concentrated in the Trudeau era. The gender gap in Reform Party support is attributed to differences over capitalism, feminism and the use of force. A theoretical model of gender block behaviour is developed using rational choice theory, and the power of the male voting block is demonstrated. Cohesion, elasticity, positioning, size and turnout are identified as important measures of block power, with cohesion and elasticity the most important variable in the gender gap. The gender gap is shown to not be an automatic advantage for women, and that sometimes it works against women's interests. The final chapter discusses the effect of situational and socialisation constraints on attitutudes towards violence, 'masculinized opportunity' and the reactionary backlash against feminism.
Heterogeneous popularity of metabolic reactions from evolution
Creators: name: Lee, Mi Jin
name: Lee, Deok-Sun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The composition of cellular metabolism is different across species. Empirical data reveal that bacterial species contain similar numbers of metabolic reactions but that the cross-species popularity of reactions is so heterogenous that some reactions are found in all the species while others are in just few species, characterized by a power-law distribution with the exponent one. Introducing an evolutionary model concretizing the stochastic recruitment of chemical reactions into the metabolism of different species at different times and their inheritance to descendants, we demonstrate that the exponential growth of the number of species containing a reaction and the saturated recruitment rate of brand-new reactions lead to the empirically identified power-law popularity distribution. Furthermore, the structural characteristics of metabolic networks and the species' phylogeny in our simulations agree well with empirical observations.
description: Main: 5 pages, 4 figures, Supplemental Material: 4 pages, 6 figures
Machine Learning and Quantum Devices
Creators: name: Marquardt, Florian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: These brief lecture notes cover the basics of neural networks and deep learning as well as their applications in the quantum domain, for physicists without prior knowledge. In the first part, we describe training using backpropagation, image classification, convolutional networks and autoencoders. The second part is about advanced techniques like reinforcement learning (for discovering control strategies), recurrent neural networks (for analyzing time traces), and Boltzmann machines (for learning probability distributions). In the third lecture, we discuss first recent applications to quantum physics, with an emphasis on quantum information processing machines. Finally, the fourth lecture is devoted to the promise of using quantum effects to accelerate machine learning.
description: 48 pages, 7 figures. Submitted to SciPost Lecture Notes. To appear in 'Quantum Information Machines; Lecture Notes of the Les Houches Summer School 2019', eds. M. Devoret, B. Huard, and I. Pop. This is version 2 with the very few changes suggested by the referee
Vischer (Vischer-Forcart), Frau
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
XMM-Newton spectroscopy of the metal depleted T Tauri star TWA 5
Creators: name: Argiroffi, C.
name: Maggio, A.
name: Peres, G.
name: Stelzer, B.
name: Neuhäuser, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of X-ray spectroscopy for TWA 5, a member of the young TW Hydrae association, observed with XMM-Newton. TWA~5 is a multiple system which shows Halpha emission, a signature typical of classical T Tauri stars, but no infrared excess. From the analysis of the RGS and EPIC spectra, we have derived the emission measure distribution vs. temperature of the X-ray emitting plasma, its abundances, and the electron density. The characteristic temperature and density of the plasma suggest a corona similar to that of weak-line T Tauri stars and active late-type main sequence stars. TWA 5 also shows a low iron abundance (~0.1 times the solar photospheric one) and a pattern of increasing abundances for elements with increasing first ionization potential reminiscent of the inverse FIP effect observed in highly active stars. The especially high ratio Ne/Fe~10 is similar to that of the classical T Tauri star TW Hya, where the accreting material has been held responsible for the X-ray emission. We discuss the possible role of an accretion process in this scenario. Since all T Tauri stars in the TW Hydrae association studied so far have very high Ne/Fe ratios, we also propose that environmental conditions may cause this effect.
description: 12 pages, 9 postscript figures, accepted for publication in Astronomy and Astrophysics
Multi-agent Reinforcement Learning for Cooperative Lane Changing of Connected and Autonomous Vehicles in Mixed Traffic
Creators: name: Zhou, Wei
name: Chen, Dong
name: Yan, Jun
name: Li, Zhaojian
name: Yin, Huilin
name: Ge, Wanchen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Autonomous driving has attracted significant research interests in the past two decades as it offers many potential benefits, including releasing drivers from exhausting driving and mitigating traffic congestion, among others. Despite promising progress, lane-changing remains a great challenge for autonomous vehicles (AV), especially in mixed and dynamic traffic scenarios. Recently, reinforcement learning (RL), a powerful data-driven control method, has been widely explored for lane-changing decision makings in AVs with encouraging results demonstrated. However, the majority of those studies are focused on a single-vehicle setting, and lane-changing in the context of multiple AVs coexisting with human-driven vehicles (HDVs) have received scarce attention. In this paper, we formulate the lane-changing decision making of multiple AVs in a mixed-traffic highway environment as a multi-agent reinforcement learning (MARL) problem, where each AV makes lane-changing decisions based on the motions of both neighboring AVs and HDVs. Specifically, a multi-agent advantage actor-critic network (MA2C) is developed with a novel local reward design and a parameter sharing scheme. In particular, a multi-objective reward function is proposed to incorporate fuel efficiency, driving comfort, and safety of autonomous driving. Comprehensive experimental results, conducted under three different traffic densities and various levels of human driver aggressiveness, show that our proposed MARL framework consistently outperforms several state-of-the-art benchmarks in terms of efficiency, safety and driver comfort.
description: This paper was published on Autonomous Intelligent Systems (Volume 2, article number 5, 2022)
Effect of Elastic Deformations on the Critical Behavior of Disordered Systems with Long-Range Interactions
Creators: name: Belim, S. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A field-theoretic approach is applied to describe behavior of three-dimensional, weakly disordered, elastically isotropic, compressible systems with long-range interactions at various values of a long-range interaction parameter. Renormalization-group equations are analyzed in the two-loop approximation by using the Pade-Borel summation technique. The fixed points corresponding to critical and tricritical behavior of the systems are determined. Elastic deformations are shown to changes in critical and tricritical behavior of disordered compressible systems with long-range interactions. The critical exponents characterizing a system in the critical and tricritical regions are determined.
Controllable Entanglement of Lights in a Five-Level System
Creators: name: Li, Yun
name: Hang, Chao
name: Ma, Lei
name: Huang, Guoxiang
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyze the nonlinear optical response of a five-level system under a novel configuration of electro-magnetically induced transparency. We show that a giant Kerr nonlinearity with a relatively large cross-phase modulation coefficient that occurs in such system may be used to produce an efficient photon-photon entanglement. We demonstrate that such photon-photon entanglement is practically controllable and hence facilitates promising applications in quantum information and computation.
description: 13 pages, 4 figures, 1 column. We have added a section in which the distortion of pulses due to the dispersion is considered
Vest, J. J., I.U.D., Notar
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Basel
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Observation and modeling of anomalous CN polarization profiles produced by the molecular Paschen-Back effect in sunspots
Creators: name: Ramos, A. Asensio
name: Bueno, J. Trujillo
name: Collados, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report novel spectropolarimetric observations of sunspots carried out with the Tenerife Infrared Polarimeter (TIP) in a near-IR spectral region around 15410 A, which is known to contain two groups of prominent OH lines that show circular polarization signals of opposite polarity. Surrounding these well-known OH lines, we have discovered the presence of CN lines of the $Δv=1$ band which show anomalous polarization profiles. Although the Stokes V signals of the OH lines are antisymmetric and with a sizable amplitude, the CN lines show almost negligible circular polarization. On the contrary, the linear polarization signals turn out to be much stronger in the CN lines than in the OH lines. Interestingly, these CN lines present striking antisymmetric linear polarization profiles, which we are able to explain and model via the Paschen-Back effect theory for diatomic molecules. The presence of such peculiar CN lines in the same spectral region of the OH lines may be useful to improve our empirical knowledge of solar magnetic fields via the simultaneous observation and modeling of the transverse and longitudinal Zeeman effects in two different molecular species.
description: 11 pages, 3 figures, published in ApJ 623, L57 (2005)
Usteri-von Muralt, J. M
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Zürich
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
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Wechsler, Mayer
Creators: name: [s.n.]
Publisher: name: [s.n.]
Year: 1828

description: Ort: Memmingen
description: Verzeichnung=Description=Inventaire 05.07.2020 Automatisiert nach HAN-Import
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
On Standards and Specifications in Quantum Cryptography
Creators: name: Trushechkin, A. S.
name: Volovich, I. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum cryptography is going to find practically useful applications. Recently some first quantum cryptographic solutions became available on the market. For clients it is important to be able to compare the quality and properties of the proposed products. To this end one needs to elaborate on specifications and standards of solutions in quantum cryptography. We propose and discuss a list of characteristics for the specification, which includes numerical evaluations of the security of solution and can be considered as a standard for quantum key distribution solutions. The list is based on the average time of key generation depending on some parameters. In the simplest case for the user the list includes three characteristics: the security degree, the length of keys and the key refresh rate.
description: 18 pages; a new subsection (3.2), added remarks in subsection 2.3 and references