cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Exact computation of the Maximum Entropy Potential of spiking neural networks models
Creators: name: Cofre, Rodrigo
name: Cessac, Bruno
Publisher: name: arXiv
Year: 2014
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Understanding how stimuli and synaptic connectivity in uence the statistics of spike patterns in neural networks is a central question in computational neuroscience. Maximum Entropy approach has been successfully used to characterize the statistical response of simultaneously recorded spiking neurons responding to stimuli. But, in spite of good performance in terms of prediction, the fitting parameters do not explain the underlying mechanistic causes of the observed correlations. On the other hand, mathematical models of spiking neurons (neuro-mimetic models) provide a probabilistic mapping between stimulus, network architecture and spike patterns in terms of conditional proba- bilities. In this paper we build an exact analytical mapping between neuro-mimetic and Maximum Entropy models.
description: arXiv admin note: text overlap with arXiv:1309.5873
Searching for star-forming dwarf galaxies in the Antlia cluster
Creators: name: Vaduvescu, O.
name: Kehrig, C.
name: Bassino, L. P.
name: Castelli, A. V. Smith
name: Calderon, J. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The formation and evolution of dwarf galaxies in clusters need to be understood, and this requires large aperture telescopes. In this sense, we selected the Antlia cluster to continue our previous work in the Virgo, Fornax, and Hydra clusters and in the Local Volume (LV). Because of the scarce available literature data, we selected a small sample of five blue compact dwarf (BCD) candidates in Antlia for observation. Using the Gemini South and GMOS camera, we acquired the Halpha imaging needed to detect star-forming regions in this sample. With the long-slit spectroscopic data of the brightest seven knots detected in three BCD candidates, we derived their basic chemical properties. Using archival VISTA VHS survey images, we derived K_S magnitudes and surface brightness profile fits for the whole sample to assess basic physical properties. FS90-98, FS90-106, and FS90-147 are confirmed as BCDs and cluster members, based on their morphology, K_S surface photometry, oxygen abundance, and velocity redshift. FS90-155 and FS90-319 did not show any Hα emission, and they could not be confirmed as dwarf cluster star-forming galaxies. Based on our data, we studied some fundamental relations to compare star forming dwarfs (BCDs and dIs) in the LV and in the Virgo, Fornax, Hydra, and Antlia clusters. Star-forming dwarfs in nearby clusters appear to follow same fundamental relations in the near infrared with similar objects in the LV, specifically the size-luminosity and the metallicity-luminosity, while other more fundamental relations could not be checked in Antlia due to lack of data.
description: Accepted for publication in A&A (early 2014)
Quasiperiodic graphs at the onset of chaos
Creators: name: Luque, Bartolo
name: Cordero-Gracia, Marta
name: Gómez, Mariola
name: Robledo, Alberto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We examine the connectivity fluctuations across networks obtained when the horizontal visibility (HV) algorithm is used on trajectories generated by nonlinear circle maps at the quasiperiodic transition to chaos. The resultant HV graph is highly anomalous as the degrees fluctuate at all scales with amplitude that increases with the size of the network. We determine families of Pesin-like identities between entropy growth rates and generalized graph-theoretical Lyapunov exponents. An irrational winding number with pure periodic continued fraction characterizes each family. We illustrate our results for the so-called golden, silver and bronze numbers.
description: arXiv admin note: text overlap with arXiv:1205.1902
On Volterra and orthoganality preserving quadratic stochastic operators
Creators: name: Mukhamedov, Farrukh
name: Taha, Muhammad Hafizuddin Bin Mohd
Publisher: name: arXiv
Year: 2014
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E99, 37N25, 39B82, 47H60, 92D25

description: A quadratic stochastic operator (in short QSO) is usually used to present the time evolution of differing species in biology. Some quadratic stochastic operators have been studied by Lotka and Volterra. In the present paper, we first give a simple characterization of Volterra QSO in terms of absolutely continuity of discrete measures. Moreover, we provide its generalization in continuous setting. Further, we introduce a notion of orthogonal preserving QSO, and describe such kind of operators defined on two dimensional simplex. It turns out that orthogonal preserving QSOs are permutations of Volterra QSO. The associativity of genetic algebras generated by orthogonal preserving QSO is studied too.
description: 16 pages
Springtail (Collembola) response to the 2019-2020 megafires in Blue Mountains swamps
Creators: name: Sanzida, Nusrat Jahan
Publisher: name: Macquarie University
Year: 2022
Subjects: Other education not elsewhere classified

description: Swamps are ecologically important environments where macroinvertebrates perform essential roles in nutrient cycling and maintaining interactions between different trophic levels. However, very little is known about how their diversity could be used as indicators of ecosystem health and recovery following disturbance. The recent 2019-2020 bushfires destroyed more than 50% of Blue Mountains swamps (NSW) and are expected to have severely affected macroinvertebrate communities. We, therefore, assessed the impact that the 2019-2020 bushfires had on collembola assemblages collected from Blue Mountains swamps using a DNA metabarcoding approach. Specifically, we assessed shifts in springtail (Collembola) taxonomic diversity, richness, and composition among swamps, between fire status (burnt and unburnt), and year (2019 and 2020). We found that the diversity of springtails was affected by fire disturbance and nearly all swamps showed a unique taxonomic composition of Collembola. While some taxonomic groups were not detected in burnt swamps after the fire, other taxa were found in greater abundance in both burnt and unburnt swamps after the fire. Overall, we found that the burnt sites had lower taxonomic richness and diversity of Collembola compared to the unburnt sites both before (2019) and after (2020) the fire. The results have implications for carrying out future assessments of the extent of taxonomic biodiversity shifts in invertebrates due to fire and providing the initial source of information for conservation and management indicating the need for considering actions to minimize the effects of climate change and future bushfire events on these critical ecosystems.
On the spheroidized carbide dissolution and elemental partitioning in a high carbon bearing steel 100Cr6
Creators: name: Song, Wenwen
name: Choi, Pyuck-Pa
name: Inden, Gerhard
name: Prahl, Ulrich
name: Raabe, Dierk
name: Bleck, Wolfgang
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report on the characterization of high carbon bearing steel 100Cr6 using electron microscopy and atom probe tomography in combination with multi-component diffusion simulations (DICTRA). Scanning electron micrographs show that around 14 vol.% spheroidized carbides are formed during soft annealing and only 3 vol.% remain after dissolution into the austenitic matrix by austenitization at 1123 K (850 °C) for 300 s. The spheroidized particles are identified as (Fe, Cr)3C by transmission electron microscopy. Atom probe analyses reveal the redistribution and partitioning behaviors of elements, i.e. C, Si, Mn, Cr, Fe in both, the spheroidized carbides and the bainitic matrix in the sample isothermally heat-treated at 773 K (500 °C) after austenitization. A homogeneous distribution of C and gradual gradient of Cr was detected within the spheroidized carbides. Due to its limited diffusivity in (Fe, Cr)3C, Cr exhibits a maximum concentration at the surface of spheroidized carbides (16 at.%) and decreases gradually from surface towards the core down to a level of about 2 at.%. The atom probe results also indicate that the partially dissolved spheroidized carbides during austenitization may serve as nucleation sites for intermediate temperature cementite within bainite, which results in a relatively softer surface and harder core in spheroidized particles. This microstructure may contribute to the good wear resistance and fatigue properties
Pentacyclic fused diborepinium ions with carbene- and carbone-mediated deep-blue to red emission
Creators: name: Hollister, Kimberly
K.
name: Molino, Andrew
name: Le, VVV
name: Jones, N
name: Smith, WJ
name: Müller, P
name: Dickie, DA
name: Wilson, David
name: Gilliard, RJ
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 34
subject: Chemical sciences
subject: FOS: Chemical sciences
classificationCode: 3406
subject: Physical chemistry
classificationCode: 3402
subject: Inorganic chemistry

description: Designing molecules that can undergo late-stage modifications resulting in specific optical properties is useful for developing structure-function trends in materials, which ultimately advance optoelectronic applications. Herein, we report a series of fused diborepinium ions stabilized by carbene and carbone ligands (diamino-N-heterocyclic carbenes, cyclic(alkyl)(amino) carbenes, carbodicarbenes, and carbodiphosphoranes), including a detailed bonding analysis. These are the first structurally confirmed examples of diborepin dications and we detail how distortions in the core of the pentacyclic fused system impact aromaticity, stability, and their light-emitting properties. Using the same fused diborepin scaffold, coordinating ligands were used to dramatically shift the emission profile, which exhibit colors ranging from blue to red (358-643 nm). Notably, these diborepinium ions access expanded regions of the visible spectrum compared to known examples of borepins, with quantum yields up to 60%. Carbones were determined to be superior stabilizing ligands, resulting in improved stability in the solution and solid states. Density functional theory was used to provide insight into the bonding as well as the specific transitions that result in the observed photophysical properties.
Generalization of the Blumenthal-Getoor index to the class of homogeneous diffusions with jumps and some applications
Creators: name: Schnurr, Alexander
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics

description: We introduce the probabilistic symbol for the class of homogeneous diffusions with jumps (in the sense of Jacod/Shiryaev). This concept generalizes the well-known characteristic exponent of a Lévy process. Using the symbol, we introduce eight indices which generalize the Blumenthal-Getoor index $β$ and the Pruitt index $δ$. These indices are used afterwards to obtain growth and Hölder conditions of the process. In the future, the technical main results will be used to derive further fine properties. Since virtually all examples of homogeneous diffusions in the literature are Markovian, we construct a process which does not have this property.
description: Published in at http://dx.doi.org/10.3150/12-BEJ441 the Bernoulli (http://isi.cbs.nl/bernoulli/) by the International Statistical Institute/Bernoulli Society (http://isi.cbs.nl/BS/bshome.htm)
The Galactic plane at faint X-ray fluxes - II. Stacked X-ray spectra of a sample of serendipitous XMM-Newton sources
Creators: name: Warwick, R. S.
name: Byckling, K.
name: Pérez-Ramírez, D.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We have investigated the X-ray spectral properties of a sample of 138 X-ray sources detected serendipitously in $XMM-Newton$ observations of the Galactic plane, at an intermediate to faint flux level. We divide our sample into 5 subgroups according to the spectral hardness of the sources, and stack (i.e. co-add) the individual source spectra within each subgroup. As expected these stacked spectra show a softening trend from the hardest to the softest subgroups, which is reflected in the inferred line-of-sight column density. The spectra of the three hardest subgroups are characterized by a hard continuum plus superimpose Fe-line emission in the 6--7 keV bandpass. The average equivalent width (EW) of the 6.7-keV He-like Fe-K$α$ line is 170$^{+35}_{-32}$ eV, whereas the 6.4-keV Fe-K fluorescence line from neutral iron and the 6.9-keV H-like Fe-Ly$α$ line have EWs of 89$^{+26}_{-25}$ eV and 81$^{+30}_{-29}$ eV respectively, i.e. roughly half that of the 6.7-keV line. The remaining subgroups exhibit soft thermal spectra. Virtually all of the spectrally-soft X-ray sources can be associated with relatively nearby coronally-active late-type stars, which are evident as bright near-infrared (NIR) objects within the X-ray error circles. On a similar basis only a minority of the spectrally-hard X-ray sources have likely NIR identifications. The average continuum and Fe-line properties of the spectrally-hard sources are consistent with those of magnetic cataclysmic variables but the direct identification of large numbers of such systems in Galactic X-ray surveys, probing intermediate to faint flux levels, remains challenging.
description: 14 pages, 9 figures, 4 tables, accepted for publication in MNRAS
The separate universe problem: 40 years on
Creators: name: Carr, B. J.
name: Harada, Tomohiro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The claim that an overdense (positive curvature) region in the early universe cannot extend beyond some maximum scale and remain part of our universe, first made 40 years ago, has recently been questioned by Kopp et al. Their analysis is elucidating and demonstrates that one cannot constrain the form of primordial density perturbations using this argument. However, the notion of a separate-universe scale still applies and it places an important upper limit on the mass of primordial black holes forming at any epoch. We calculate this scale for equations of state of the form $p = k ρc^2$ with $-1
description: 31 pages, 5 figures
Entropic inequalities and properties of some special functions
Creators: name: Man'ko, V. I.
name: Markovich, L. A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Using known entropic and information inequalities new inequalities for some classical polynomials are obtained. Examples of Jacobi and Legendre polynomials are considered.
description: 12 pages, 11 figures
Reassessing the 2003–17 regional assistance mission to Solomon Islands
Creators: name: Fraenkel, Jonathan
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: The 2003–17 Australian and New Zealand-led Regional Assistance Mission to Solomon Islands (RAMSI) is widely considered to be a comparatively successful peacebuilding mission. Jon Fraenkel argues that a fuller assessment of RAMSI needs to consider the low intensity of the preceding conflict, and the way that conflict changed over 2001–03 in ways that encouraged a law and order focus. Within Oceania, RAMSI is usually seen as fairly successful in achieving its short-term security objectives, but less effective in reaching its more ambitious state-building goals, though without much attention to the reasons for that contrast. There has been little appreciation of the longer-run ramifications of the 2006–07 crisis in relations between Australian authorities and the Solomon Islands government.
Проблемы передачи электроэнергии к потребителю при замене тепловыделяющих сборок реактора на АЭС
Creators: name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2008
Subjects: тепловыделяющие сборки
АЭС
отработанное ядерное топливо
ОЯТ

description: Опубликовано: [Шевченко В.В. Проблемы передачи электроэнергии к потребителю при замене тепловыделяющих сборок реактора на АЭС // Сборник тезисов докладов XLII научно-практической конференции научно-педагогических работников, ученых, аспирантов и сотрудников академии (10-15 декабря 2008 г.), часть 1, секция "Электроэнергетики". - Украина, Харьков: УИПА, Энергетический факультет, 2008. - С. 61. https://doi.org/10.5281/zenodo.2528912]

Атомная энергетика остается главным источником электроэнергии для Украины. Поэтому постоянно ведутся поиски новых технических решений для модернизации оборудования, использования разных тепловыделяющих сборок и хранения отработанного ядерного топлива.

Ключевые слова: тепловыделяющие сборки, АЭС, отработанное ядерное топливо, ОЯТ.
Dissolution Mechanisms of Amorphous Solid Dispersions
Creators: name: Deac, Alexandru
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Other physical sciences not elsewhere classified

description: The dissolved concentration of an active pharmaceutical ingredient in biological fluids is of significant importance for establishing a therapeutic effect in patients. However, the current pharmaceutical landscape is abundant in poorly soluble drugs that require solubility enhancing techniques to enable their administration. A promising technique, with increasing commercial success, is to molecularly mix drug and polymer to create an amorphous solid dispersion (ASD). While these mixtures provide enhanced drug solubility and dissolution in aqueous solutions, the mechanistic processes by which they release drug into solution are not well understood. Some unexplained behaviors include rapid drug release even at the maximum supersaturated concentration and spontaneous formation of drug-rich nanoparticles. These are beneficial for rapidly achieving and maintaining a highly supersaturated drug concentration during absorption, if crystallization is inhibited. However, the phenomena occur at typically low drug loading and are abruptly lost above a certain threshold termed the ‘limit of congruency’ (LoC), which has been reported to vary based on the drug-polymer system. In this research, the mechanisms underpinning ASD release at low and high drug loading were studied, and the factors affecting LoC were mechanistically explored by performing dissolution experiments and utilizing imaging, separation, thermal analysis, and spectroscopy methods to characterize the materials in the presence and absence of water. The results show that ASDs developed a gel layer on the surface when exposed to aqueous solution. This water-rich environment was thermodynamically unstable and phase separated into hydrophilic and hydrophobic phases. The morphology of the hydrophobic phase was directly related to the ASD release behavior, where ASDs below the LoC exhibited a dispersed and stable hydrophobic phase morphology, and ASDs above the LoC displayed a continuous or aggregated morphology. In cases where thermodynamic factors were rate limiting, LoC was inferred from features on the ternary phase diagram. Moreover, drug-polymer interactions and polymer molecular weight were demonstrated to affect the morphology of the hydrophobic phase and ultimately the LoC. The conclusions from this work provide the basis of a theoretical framework for rationally designing ASDs and optimizing their release.
Element-Resolved Corrosion Analysis of Stainless-Type Glass-Forming Steels
Creators: name: Duarte, M. J.
name: Klemm, J.
name: Klemm, S. O.
name: Mayrhofer, K. J. J.
name: Stratmann, M.
name: Borodin, S.
name: Romero, A. H.
name: Madinehe, M.
name: Crespo, D.
name: Serrano, J.
name: Gerstl, S. S. A.
name: Choi, P. P.
name: Raabe, D.
name: Renner, F. U.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ultrathin passive films effectively prevent the chemical attack of stainless steel grades in corrosive environments; their stability critically depends on the interplay between structure and chemistry of the constituents Fe-Cr-Mo. In particular, nanoscale inhomogeneities along the surface can have a tremendous impact on material failure, but are yet barely understood. Addressing a stainless-type glass-forming Fe50Cr15Mo14C15B6 alloy and utilizing a combination of complementary high-resolution analytical techniques, we relate near-atomistic insight into different gradual nanostructures with time- and element-resolved dissolution behavior. The progressive elemental segregation on the nanoscale is followed in its influence on the concomitant degree of passivity. A detrimental transition from Cr-controlled passivity to Mo-controlled breakdown is dissected atom-by-atom demonstrating the importance of nanoscale knowledge for understanding corrosion.
Strangeness in Quark Matter 2013: Opening Talk
Creators: name: Steinheimer, J.
name: Lang, T.
name: van Hees, H.
name: Botvina, A. S.
name: Gudima, K. K.
name: Mishustin, I. N.
name: Stöcker, H.
name: Bleicher, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss several new developments in the field of strange and heavy flavor physics in high energy heavy ion collisions. As shown by many recent theoretical works, heavy flavored particles give us a unique opportunity to study the properties of systems created in these collisions. Two in particular important aspects, the production of (multi) strange hypernuclei and the properties of heavy flavor mesons, are at the core of several future facilities and will be discussed in detail.
description: 6 pages 8 figures, Opening talk of the Strangeness in Quark Matter conference 2013
Detection of Symmetry Enriched Topological Phases
Creators: name: Huang, Ching-Yu
name: Chen, Xie
name: Pollmann, Frank
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Topologically ordered systems in the presence of symmetries can exhibit new structures which are referred to as symmetry enriched topological (SET) phases. We introduce simple methods to detect the SET order directly from a complete set of topologically degenerate ground state wave functions. In particular, we first show how to directly determine the characteristic symmetry fractionalization of the quasiparticles from the reduced density matrix of the minimally entangled states. Second, we show how a simple generalization of a non-local order parameter can be measured to detect SETs. The usefulness of the proposed approached is demonstrated by examining two concrete model states which exhibit SET: (i) a spin-1 model on the honeycomb lattice and (ii) the resonating valence bond state on a kagome lattice. We conclude that the spin-1 model and the RVB state are in the same SET phases.
Evidence-based methodology for identifying drugs with potential human liver toxicities using WHO Vigibase data
Creators: name: Tsaioun, Katya
name: Mehta, Jyotsna
name: Dirven, Hubert
Publisher: name: Zenodo
Year: 2018
Subjects: DILI
liver toxicity
liver injury
adverse drug reaction
Vigibase

description: Evidence-based methodology for analyzing adverse events related to Drug-Induced Liver Injury (DILI) in WHO Vigibase, a database of Adverse Drug Reactions (ADRs).
description: This document is a protocol for analysis of adverse drug reaction reporting Vigibase data, in support of EBTC Tox21 project (evidence stream 3 protocol).
SOCIO-ECONOMIC ASPECTS OF THE DEVELOPMENT OF HISTORICAL-CULTURAL TOURISM
Creators: name: Olimjonova, Farog'at
Publisher: name: Zenodo
Year: 2024

description: This article reveals the concept of historical and cultural tourism, its role in the field of Tourism. Factors affecting the development of historical-cultural tourism have been studied on the basis of PEST analysis. Opportunities and prospects for the development of historical and cultural tourism are analyzed.
Studying and removing effects of fixed topology
Creators: name: Czaban, Christopher
name: Dromard, Arthur
name: Wagner, Marc
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: At small lattice spacing, or when using overlap fermions, lattice QCD simulations tend to become stuck in a single topological sector. Physical observables, e.g.\ hadron masses, then differ from their full QCD counterparts by $1/V$ corrections, where $V$ is the spacetime volume. These corrections can be calculated order by order using the saddle point method. We calculate all corrections proportional to $1/V^2$ and $1/V^3$ and test the resulting equations for several models: a quantum mechanical particle on a circle, the Schwinger model and SU(2) Yang-Mills theory.
description: 6 pages, 1 figure, Excited QCD 2014 conference
$p$-adic quasi Gibbs measure for Vannimenus model on a Cayley tree
Creators: name: Khakimov, Otabek
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Functional Analysis (math.FA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In this paper we study the boundedness of the $p$-adic quasi Gibbs measures for the Vannimenus model on a Cayley tree of order two.
description: in Russian
Photoelectric search for peculiar stars in open clusters. XV. Feinstein 1, NGC 2168, NGC 2323, NGC 2437, NGC 2547, NGC 4103, NGC 6025, NGC 6633, Stock 2, and Trumpler 2
Creators: name: Paunzen, E.
name: Netopil, M.
name: Maitzen, H. M.
name: Pavlovski, K.
name: Schnell, A.
name: Zejda, M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The chemically peculiar (CP) stars of the upper main sequence are mainly characterized by strong overabundances of heavy elements. Two subgroups (CP2 and CP4) have strong local magnetic fields which make them interesting targets for astrophysical studies. This star group, in general, is often used for the analysis of stellar formation and evolution in the context of diffusion as well as meridional circulation. In continuation of a long term study of CP stars (initiated in the 1980ies), we present new results based on photoelectric measurements for ten open clusters that are, with one exception, younger than 235Myr. Observations in star clusters are favourable because they represent samples of stars of constant age and homogeneous chemical composition. The very efficient tool of Delta a photometry was applied. It samples the flux depression at 5200A typically for CP stars. In addition, it is able to trace emission line Be/Ae and lambda Bootis stars. Virtually all CP2 and CP4 stars can be detected via this tool. For all targets in the cluster areas, we performed a kinematic membership analysis. We obtained new photoelectric Delta a photometry of 304 stars from which 207 objects have a membership probability higher than 50%. Our search for chemically peculiar objects results in fifteen detections. The stars have masses between 1.7 M(Sun) and 7.7 M(Sun) and are between the zero- and terminal-age-main-sequence. We discuss the published spectral classifications in the light of our Delta a photometry and identify several misclassified CP stars. We are also able to establish and support the nature of known bona fide CP candidates. The new and confirmed CP stars are interesting targets for spectroscopic follow-up observations to put constraints on the formation and evolution of CP stars.
description: Accepted for publication in Astronomy and Astrophysics: 8 pages, 2 figures, and 3 tables
Thermal properties of light nuclei from $^{12}$C+$^{12}$C fusion-evaporation reactions
Creators: name: Morelli, L
name: Baiocco, G
name: D'Agostino, M
name: Gulminelli, F
name: Bruno, M
name: Abbondanno, U
name: Appannababu, S
name: Barlini, S
name: Bini, M
name: Casini, G
name: Cinausero, M
name: Degerlier, M
name: Fabris, D
name: Gelli, N
name: Gramegna, F
name: Kravchuk, V L
name: Marchi, T
name: Pasquali, G
name: Piantelli, S
name: Valdré, S
name: Raduta, Ad R
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The $^{12}$C+$^{12}$C reaction at 95 MeV has been studied through the complete charge identification of its products by means of the GARFIELD+RCo experimental set-up at INFN Laboratori Nazionali di Legnaro (LNL). In this paper, the first of a series of two, a comparison to a dedicated Hauser-Feshbach calculation allows to select a set of dissipative events which corresponds, to a large extent, to the statistical evaporation of highly excited $^{24}$Mg. Information on the isotopic distribution of the evaporation residues in coincidence with their complete evaporation chain is also extracted. The set of data puts strong constraints on the behaviour of the level density of light nuclei above the threshold for particle emission. In particular, a fast increase of the level density parameter with excitation energy is supported by the data. Residual deviations from a statistical behaviour are seen in two specific channels, and tentatively associated with a contamination from direct reactions and/or $α$-clustering effects. These channels are studied in further details in the second paper of the series.
description: 24 pages, 15 figures, first paper of a series of two
DETERMINATION OF HEPATITIS B VIRUS GENOTYPE IN UZBEKISTAN USING 3RD GENERATION SEQUENCING
Creators: name: Tursunov, J.I.
name: Abzalova, N.A.
Publisher: name: Zenodo
Year: 2024

description: Determining the DNA sequence of the hepatitis B virus in the territory of Uzbekistan will greatly help to find a solution to this disease and will greatly help researchers and researchers in the treatment of the virus, which currently has no cure or vaccine.
Pre-mainsequence stellar evolution in N-body models
Creators: name: Railton, Anna D.
name: Tout, Christopher A.
name: Aarseth, Sverre J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We provide a set of analytic fits to the radii of pre-mainsequence stars in the mass range 0.1 < M/Msun < 8.0. We incorporate the formulae in N-body cluster models for evolution from the beginning of pre-main sequence. In models with 1,000 stars and high initial cluster densities, pre-mainsequence evolution causes roughly twice the number of collisions between stars than in similar models with evolution begun only from the zero-age main sequence. The collisions are often all part of a runaway sequence that creates one relatively massive star.
description: 8 pages, 4 figures, accepted by PASA
On the role of Schwinger's SU(2) generators for Simple Harmonic Oscillator in 2D Moyal plane
Creators: name: Kumar, Kaushlendra
name: Prajapat, Shivraj
name: Chakraborty, Biswajit
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Hilbert-Schmidt operator formulation of non-commutative quantum mechanics in 2D Moyal plane is shown to allow one to construct Schwinger's SU(2) generators. Using this the SU(2) symmetry aspect of both commutative and non-commutative harmonic oscillator are studied and compared. Particularly, in the non-commutative case we demonstrate the existence of a critical point in the parameter space of mass and angular frequency where there is a manifest SU(2) symmetry for a unphysical harmonic oscillator Hamiltonian built out of commuting (unphysical yet covariantly transforming under SU(2)) position like observable. The existence of this critical point is shown to be a novel aspect in non-commutative harmonic oscillator, which is exploited to obtain the spectrum and the observable mass and angular frequency parameters of the physical oscillator-which is generically different from the bare parameters occurring in the Hamiltonian. Finally, we show that a Zeeman term in the Hamiltonian of non-commutative physical harmonic oscillator, is solely responsible for both SU(2) and time reversal symmetry breaking.
description: 15 pages, 1 figures
The Ethnic Implications of Preferential Voting
Creators: name: Coakley, J
name: Fraenkel, Jonathan
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: subject: 160699 Political Science not elsewhere classified
subject: FOS: Political science

description: Around the turn of the century, political developments in Northern Ireland, Fiji and Papua New Guinea encouraged claims that preferential voting systems could steer polities in the direction of 'moderate' multi-ethnic government. Sixteen years later, we have a longer time period and larger volume of data to reassess these verdicts. This article investigates ballot transfer and party vote-seat share patterns in the seven deeply divided polities with some experience of preferential voting for legislative elections or direct presidential elections (Northern Ireland, Fiji, Papua New Guinea, Estonia, Sri Lanka, Bosnia-Herzegovina and Southern Rhodesia). We find little support for centripetalist claims that such systems encourage 'moderate' parties. We argue that where district magnitude is low, where voters are required to rank preferences and where ticket voting prevails, departures from vote-seat proportionality may favour 'moderate' parties, but such heavily engineered systems may simply advantage the larger parties or yield erratic outcomes.
Flux Dependent Crossover Between Quantum and Classical Behavior in a dc-SQUID
Creators: name: Butz, Susanne
name: Feofanov, Alexey K.
name: Fedorov, Kirill G.
name: Rotzinger, Hannes
name: Thomann, Alexander U.
name: Mackrodt, Brigitte
name: Dolata, Ralf
name: Geshkenbein, Vadim B.
name: Blatter, Gianni
name: Ustinov, Alexey V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In a coupled system of one classical and one quantum mechanical degree of freedom, the quantum degree of freedom can facilitate the escape of the whole system. Such unusual escape characteristics have been theoretically predicted as "Münchhausen effect". We implement such a system by shunting one of the two junctions of a dc-SQUID with an additional capacitance. In our experiments, we detect a crossover between quantum and classical escape processes related to the direction of escape. We find that, under varying external magnetic flux, macroscopic quantum tunneling periodically alternates with thermally activated escape, a hallmark of the "Münchhausen effect".
MPEC 2023-P21 : 2023 KQ5
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Non-statistical decay and $α$-correlations in the $^{12}$C+$^{12}$C fusion-evaporation reaction at 95 MeV
Creators: name: Morelli, L.
name: Baiocco, G.
name: D'Agostino, M.
name: Gulminelli, F.
name: Bruno, M.
name: Abbondanno, U.
name: Appannababu, S.
name: Barlini, S.
name: Bini, M.
name: Casini, G.
name: Cinausero, M.
name: Degerlier, M.
name: Fabris, D.
name: Gelli, N.
name: Gramegna, F.
name: Kravchuk, V. L.
name: Marchi, T.
name: Pasquali, G.
name: Piantelli, S.
name: Valdré, S.
name: Raduta, Ad R.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Multiple alpha coincidence and correlations are studied in the reaction $^{12}$C+$^{12}$C at 95 MeV for fusion-evaporation events completely detected in charge. Two specific channels with Carbon and Oxygen residues in coincidence with $α$-particles are addressed, which are associated with anomalously high branching ratios with respect the predictions by Hauser-Feshbach calculations. Triple alpha emission appears kinematically compatible with a sequential emission from a highly excited Mg. The phase space distribution of $α$-$α$ coincidences suggests a correlated emission from a Mg compound, leaving an Oxygen residue excited above the threshold for neutron decay. These observations indicate a preferential $α$ emission of $^{24}$Mg at excitation energies well above the threshold for $6-α$ decay.
description: 21 pages, 17 figures, second paper of a series of two
Conversations about Mother: Mnemonic Strategies for Narrating Survival in (Post-) War Germany
Creators: name: Bonisch-Brednich, Brigitte
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2022
Subjects: subject: 160104 Social and Cultural Anthropology
subject: FOS: Sociology
subject: 210399 Historical Studies not elsewhere classified
subject: FOS: History and archaeology

description: This article explores the strong correlations between mnemonic strategies and mnemonic triggers within family narratives. Families form narrative collectives with their own codes of narrative evocation. One sentence, even only one word, might open up a bundle of memories shared by all immediate kin. Such sharing can, however, be practised and interpreted differently by each family member; stories are also utilised strategically to bond with one family member and sideline another. Given the specific German context of this analysis, its stories and mnemonic devices demonstrate strategies of collective and individual dissociation and victimisation. They also lead us to better understand how very normal, average Germans might have tried to live a decent life with Christian and left-leaning political values, while having no techniques, post 1945, for articulating or reflecting on either trauma or National Socialism and their lasting impact on their nation. As with most other families, the war and post-war period was dominated by memories of struggle and collective grief. Survival narratives use emplotments that can be traced through generations of grandparents, parents, and grandchildren. Exploring such transgenerational conversations enables us to widen the perspective from transgenerational trauma towards a framework of compassion and narrative agency.
title: Recording and analyzing kinematic data in children and adults with SOLLAR
title: Sonographic & Optical Linguo-Labial Articulation Recording system
titleType: Subtitle
Creators: name: Noiray, Aude
name: Ries, Jan
name: Tiede, Mark
name: Rubertus, Elina
name: Laporte, Catherine
name: Ménard, Lucie
Publisher: name: Universität Potsdam
Year: 2020

description: Understanding the development of spoken language in young children has become increasingly important for advancing basic theories of language acquisition and for clinical practice. However, such a goal requires refined measurements of speech articulation (e.g., from the tongue), which are difficult to obtain from young children. In recent years though, technological advances have allowed developmental researchers to make significant steps in that direction. For instance, movements of the tongue, an articulator that is essential for spoken language, can now be tracked and recorded in children with ultrasound imaging. This technique has opened novel research avenues in (a)typical language acquisition, enabling researchers to reliably capture what has long remained invisible in the speech of young children. Within this context, we have designed an experimental platform for the recording and the processing of kinematic data: SOLLAR (Sonographic and Optical Linguo-Labial Articulatory Recording system). The method has been tailored for children, but it is suitable for adults. In the present article, we introduce the recording environment developed to record over 100 children and 30 adults within SOLLAR. We then describe SOLLAR’s data processing framework, providing examples of data visualization and a summary of strengths and limitations.
description: Postprints der Universität Potsdam : Humanwissenschaftliche Reihe, 667
Measurement of hard double-parton interactions with the ATLAS detector
Creators: name: Myska, Miroslav
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The production of W boson in association with two jets in proton-proton collisions at the LHC with a centre-of-mass energy of $\sqrt{s}$ = 7 TeV has been investigated using data collected with the ATLAS detector. The fraction of events arising from double-parton scattering has been measured through the transverse momentum balance between the two jets. The measurement provides new information on the scaling of the rate of double-parton scattering processes and constraints on proton transverse profile modeling.
description: Presented at Conference: DIS2013 (C13-04-22). Proceedings: http://pos.sissa.it/cgi-bin/reader/conf.cgi?confid=191
A Keplerian-based Hamiltonian Splitting for Gravitational $N$-body Simulations
Creators: name: Ferrari, G. Gonçalves
name: Boekholt, T.
name: Zwart, S. F. Portegies
Publisher: name: arXiv
Year: 2014
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We developed a Keplerian-based Hamiltonian splitting for solving the gravitational $N$-body problem. This splitting allows us to approximate the solution of a general $N$-body problem by a composition of multiple, independently evolved $2$-body problems. While the Hamiltonian splitting is exact, we show that the composition of independent $2$-body problems results in a non-symplectic non-time-symmetric first-order map. A time-symmetric second-order map is then constructed by composing this basic first-order map with its self-adjoint. The resulting method is precise for each individual $2$-body solution and produces quick and accurate results for near-Keplerian $N$-body systems, like planetary systems or a cluster of stars that orbit a supermassive black hole. The method is also suitable for integration of $N$-body systems with intrinsic hierarchies, like a star cluster with primordial binaries. The superposition of Kepler solutions for each pair of particles makes the method excellently suited for parallel computing; we achieve $\gtrsim 64\%$ efficiency for only $8$ particles per core, but close to perfect scaling for $16384$ particles on a $128$ core distributed-memory computer. We present several implementations in \texttt{Sakura}, one of which is publicly available via the AMUSE framework.
description: 13 pages, 6 figures, to be published in MNRAS
Ipopv2: Photoionization of Ni XIV -- a test case
Creators: name: Delahaye, F.
name: Palmeri, P.
name: Quinet, P.
name: Zeippen, C. J.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Several years ago, M. Asplund and coauthors (2004) proposed a revision of the Solar composition. The use of this new prescription for Solar abundances in standard stellar models generated a strong disagreement between the predictions and the observations of Solar observables. Many claimed that the Standard Solar Model (SSM) was faulty, and more specifically the opacities used in such models. As a result, activities around the stellar opacities were boosted. New experiments (J. Bailey at Sandia on Z-Pinch, The OPAC consortium at LULI200) to measure directly absorbtion coefficients have been realized or are underway. Several theoretical groups (CEA-OPAS, Los Alamos Nat. Lab., CEA-SCORCG, The Opacity Project - The Iron Project (IPOPv2)) have started new sets of calculations using different approaches and codes. While the new results seem to confirm the good quality of the opacities used in SSM, it remains important to improve and complement the data currently available. We present recent results in the case of the photoionization cross sections for Ni XIV (Ni13+ ) from IPOPv2 and possible implications on stellar modelling.
description: 10 pages, 3 figures, Conf. on New Advances in Stellar Physics: From Microscopic to Macroscopic Processes
Fluctuation Theorems and the Generalised Gibbs Ensemble in Integrable Systems
Creators: name: Hickey, James M.
name: Genway, Sam
Publisher: name: arXiv
Year: 2014
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive fluctuation relations for a many-body quantum system prepared in a Generalised Gibbs Ensemble subject to a general nonequilibrium protocol. By considering isolated integrable systems, we find generalisations to the Tasaki-Crooks and Jarzynski relations. Our approach is illustrated by studying the one-dimensional quantum Ising model subject to a sudden change in the transverse field, where we find that the statistics of the work done and irreversible entropy show signatures of quantum criticality. We discuss these fluctuation relations in the context of thermalisation.
Does Symmetry Imply PPT Property?
Creators: name: Cariello, Daniel
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 15B48, 15B57

description: Recently, in [1], the author proved that many results that are true for PPT matrices also hold for another class of matrices with a certain symmetry in their Hermitian Schmidt decompositions. These matrices were called SPC in [1] (definition 1.1). Before that, in [9], Tóth and Gühne proved that if a state is symmetric then it is PPT if and only if it is SPC. A natural question appeared: What is the connection between SPC matrices and PPT matrices? Is every SPC matrix PPT? Here we show that every SPC matrix is PPT in $M_2\otimes M_2$ (theorem 4.3). This theorem is a consequence of the fact that every density matrix in $M_2\otimes M_m$, with tensor rank smaller or equal to 3, is separable (theorem 3.2). This theorem is a generalization of the same result found in [1] for tensor rank 2 matrices in $M_k\otimes M_m$. Although, in $M_3\otimes M_3$, there exists a SPC matrix with tensor rank 3 that is not PPT (proposition 5.2). We shall also provide a non trivial example of a family of matrices in $M_k\otimes M_k$, in which both, the SPC and PPT properties, are equivalent (proposition 6.2). Within this family, there exists a non trivial subfamily in which the SPC property is equivalent to separability (proposition 6.4).
description: 11 pages