cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Congruences for Generalized Frobenius Partitions with an Arbitrarily Large Number of Colors
Creators: name: Garvan, Frank G.
name: Sellers, James A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05A17, 11P83

description: In his 1984 AMS Memoir, George Andrews defined the family of $k$--colored generalized Frobenius partition functions. These are denoted by $cϕ_k(n)$ where $k\geq 1$ is the number of colors in question. In that Memoir, Andrews proved (among many other things) that, for all $n\geq 0,$ $cϕ_2(5n+3) \equiv 0\pmod{5}.$ Soon after, many authors proved congruence properties for various $k$--colored generalized Frobenius partition functions, typically with a small number of colors. Work on Ramanujan--like congruence properties satisfied by the functions $cϕ_k(n)$ continues, with recent works completed by Baruah and Sarmah as well as the author. Unfortunately, in all cases, the authors restrict their attention to small values of $k.$ This is often due to the difficulty in finding a "nice" representation of the generating function for $cϕ_k(n)$ for large $k.$ Because of this, no Ramanujan--like congruences are known where $k$ is large. In this note, we rectify this situation by proving several infinite families of congruences for $cϕ_k(n)$ where $k$ is allowed to grow arbitrarily large. The proof is truly elementary, relying on a generating function representation which appears in Andrews' Memoir but has gone relatively unnoticed.
Additional file 3 of Identifying trauma patients with benefit from direct transportation to Level-1 trauma centers
Creators: name: Sewalt, Charlie A.
name: Gravesteijn, Benjamin Y.
name: Nieboer, Daan
name: Steyerberg, Ewout W.
name: Den Hartog, Dennis
name: Van Klaveren, David
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 3: Figure S2. Histograms of the range of absolute benefit, for both the model with (B) and without interaction terms (A). Both histograms show the difference in absolute benefit for patients with ISS above 15 and patients with ISS below 15. A predicted absolute benefit of 1% (0.01) for a particular patient means 1% less mortality when this particular patient is brought to a Level-1/2 trauma center instead of a Level-3 trauma center.
Bias-Limited Extraction of Cosmological Parameters
Creators: name: Shimon, Meir
name: Itzhaki, Nissan
name: Rephaeli, Yoel
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: It is known that modeling uncertainties and astrophysical foregrounds can potentially introduce appreciable bias in the deduced values of cosmological parameters. While it is commonly assumed that these uncertainties will be accounted for to a sufficient level of precision, the level of bias has not been properly quantified in most cases of interest. We show that the requirement that the bias in derived values of cosmological parameters does not surpass nominal statistical error, translates into a maximal level of overall error $O(N^{-1/2})$ on $|ΔP(k)|/P(k)$ and $|ΔC_{l}|/C_{l}$, where $P(k)$, $C_{l}$, and $N$ are the matter power spectrum, angular power spectrum, and number of (independent Fourier) modes at a given scale $l$ or $k$ probed by the cosmological survey, respectively. This required level has important consequences on the precision with which cosmological parameters are hoped to be determined by future surveys: In virtually all ongoing and near future surveys $N$ typically falls in the range $10^{6}-10^{9}$, implying that the required overall theoretical modeling and numerical precision is already very high. Future redshifted-21-cm observations, projected to sample $\sim 10^{14}$ modes, will require knowledge of the matter power spectrum to a fantastic $10^{-7}$ precision level. We conclude that realizing the expected potential of future cosmological surveys, which aim at detecting $10^{6}-10^{14}$ modes, sets the formidable challenge of reducing the overall level of uncertainty to $10^{-3}-10^{-7}$.
description: 19 pages, revised version accepted for publication in JCAP
Additional file 1 of Frequent tRNA gene translocation towards the boundaries with control regions contributes to the highly dynamic mitochondrial genome organization of the parasitic lice of mammals
Creators: name: Dong, Wen-Ge
name: Dong, Yalun
name: Guo, Xian-Guo
name: Shao, Renfu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Image of the voucher specimens (# 364) of the shrew louse, Polyplax reclinata.
Pitting Corrosion and Its Transition to Crack in Offshore Wind Turbine Supporting Structures
Creators: name: Mehri Sofiani, Farid
name: Ahmad Elahi, Seyed
name: Chaudhuri, Somsubhro
name: De Waele, Wim
Publisher: name: Zenodo
Year: 2022

description: Offshore wind turbine support structures undergo pitting corrosion due to the marine environment. Besides, these structures are subject to fatigue loads due to wind and waves. The corrosion-fatigue phenomenon is considered as one of the most dangerous damage mechanisms for offshore structures. Corrosion pits attract stress which is why they are prone to turn into the crack(s). The main objective of this work is to implement computational studies on pitting corrosion and pit-to-crack transition. For pitting corrosion simulations, the phase-field modeling method is chosen. On the other hand, in order to predict the potential location of crack initiation, the stress concentration factor (SCF) concept is used for which a linear elasto-static stress analysis is implemented using the finite element method.
Detection of a multi-shell planetary nebula around the hot subdwarf O-type star 2MASS J19310888+4324577
Creators: name: Aller, A.
name: Miranda, L. F.
name: Ulla, A.
name: Vázquez, R.
name: Guillén, P. F.
name: Olguín, L.
name: Rodríguez-López, C.
name: Thejll, P.
name: Oreiro, R.
name: Manteiga, M.
name: Pérez, E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: (Abridged) The origin of hot subdwarf O-type stars (sdOs) remains unclear since their discovery in 1947. Among others, a post-Asymptotic Giant Branch (post-AGB) origin is possible for a fraction of sdOs. We are involved in a comprehensive ongoing study to search for and to analyze planetary nebulae (PNe) around sdOs with the aim of establishing the fraction and properties of sdOs with a post-AGB origin. We use deep Halpha and [OIII] images of sdOs to detect nebular emission and intermediate resolution, long-slit optical spectroscopy of the detected nebulae and their sdO central stars. These data are complemented with other observations for further analysis of the detected nebulae. We report the detection of an extremely faint, complex PN around 2MASS J19310888+4324577 (2M1931+4324), a star classified as sdO in a binary system. The PN shows a bipolar and an elliptical shell, whose major axes are oriented perpendicular to each other, and high-excitation structures outside the two shells. WISE archive images show faint, extended emission at 12 and 22 microns in the inner nebular regions. The internal nebular kinematics is consistent with a bipolar and a cylindrical/ellipsoidal shell, in both cases with the main axis mainly perpendicular to the line of sight. The nebular spectrum only exhibits Halpha, Hbeta and [OIII]4959,5007 emission lines, but suggests a very low-excitation ([OIII]/Hbeta = 1.5), in strong contrast with the absence of low-excitation emission lines. The spectrum of 2M1931+4324 presents narrow, ionized helium absorptions that confirm the previous sdO classification and suggest an effective temperature >= 60000 K. The binary nature of 2M1931+4324, its association with a complex PN, and several properties of the system provide strong support for the idea that binary central stars are a crucial ingredient in the formation of complex PNe.
description: 8 pages, 7 figures, accepted in Astronomy and Astrophysics
The Kirchhoff indices and the matching numbers of unicyclic graphs
Creators: name: Qi, Xuli
name: Zhou, Bo
name: Du, Zhibin
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C90, 05C12, 05C35

description: The Kirchhoff index of a connected graph is the sum of resistance distances between all unordered pairs of vertices in the graph. It found considerable applications in a variety of fields. In this paper, we determine the minimum Kirchhoff index among the unicyclic graphs with fixed number of vertices and matching number, and characterize the extremal graphs.
Additional file 2 of Frequent tRNA gene translocation towards the boundaries with control regions contributes to the highly dynamic mitochondrial genome organization of the parasitic lice of mammals
Creators: name: Dong, Wen-Ge
name: Dong, Yalun
name: Guo, Xian-Guo
name: Shao, Renfu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: The primers used to amplify the mitochondrial genes, minichromosomes and coding regions of the Asian grey shrew louse, Polyplax reclinata.
Radio Frequency Absorption of a Western Honey Bee in the Near Field of Antennas
Creators: name: Toribio, David
name: Joseph, Wout
name: Vermeeren, Günter
name: Plets, David
name: Thielens, Arno
Publisher: name: Zenodo
Year: 2022

description: The wireless network evolution to smaller carrier wavelengths from (2G to 5G) could increase the RF-EMF absorption in insects. Near field RF-EMF exposure of insects to antennas’ radiation has only been studied near a single antenna element. However, nearly all realistic base station antennas are multi-element arrays. In this research, we show using FDTD that at a separation distance of 10 cm from a dipole, the RF-EMF absorbed power (Pabs), in the range of 6-120 GHz in a western honey bee, maximizes at 12 GHz. Moreover, our results show that when irradiated by a phased array operating at 60 GHz, Pabs maximizes in the separation distance range of 0.1-2 cm, at which ¼ of the input power into the array can be absorbed by the honey bee.
Colobopsis cylindrica Mayr 1861
Creators: name: Forel, A.
Publisher: name: L'Imprimerie Nationale
Year: 1891
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Colobopsis
Colobopsis cylindrica

description: COLOBOPSIS CYLINDRICA, Fabricius.
Formica cylindrica, Fabricius, Entomologia systematica (1798), Suppl. Colobopsis cylindrica, Mayr, Verhandl. Zool. und Botan. zu Wien (1862).
[[queen]]. Longueur 12 mill. Allongée, presque cylindrique, d'un noir luisant, un peu poilue. Tête très allongée, légèrement plus large que le thorax, presque cylindrique, d'un rouge cerise. Elle fait 1/5 de la longueur totale du corps. Troncature oblique, semi-circulaire, noirâtre. Mandibules courtes, ponctuées, armées de cinq ou six dents. Bord antérieur du pronotum d'un brun rougeâtre. Ecaille épaisse, presque carrée, un peu velue, avec le bord supérieur droit et de niveau avec le haut de l'abdomen. Ce dernier, court, conico-cylindrique, luisant, avec le bord postérieur des segments un peu scarieux. Pattes assez fortes. Ailes noiratres à reflet doré et nervures d'un brun noirâtre (d'après Latreille, Hist. nat. des Fourmis).
île Maurice. Inde.
Il doit, sans aucun doute, exister encore d'autres espèces de Colobopsis à Madagascar. Seulement les m œ urs de ce genre sont assez cachées. La C. cylindrica n'a jamais été retrouvée depuis Fabricius et Latreille.
description: Published as part of Forel, A., 1891, Histoire naturelle des Hymenopteres. Deuxieme partie: Les Formicides., pp. 1-231 in Histoire Physique, Naturelle et Politique de Madagascar., Paris :L'Imprimerie Nationale on page 77, DOI: 10.5281/zenodo.9896
From local force-flux relationships to internal dissipations and their impact on heat engine performance: The illustrative case of a thermoelectric generator
Creators: name: Apertet, Yann
name: Ouerdane, Henni
name: Goupil, Christophe
name: Lecoeur, Philippe
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We present an in-depth analysis of the sometimes understated role of the principle of energy conservation in linear irreversible thermodynamics. Our case study is that of a thermoelectric generator (TEG), which is a heat engine of choice in irreversible thermodynamics, owing to the coupling between the electrical and heat fluxes. We show why Onsager's reciprocal relations must be considered locally and how internal dissipative processes emerge from the extension of these relations to a global scale: the linear behavior of a heat engine at the local scale is associated with a dissipation process that must partake in the global energy balance. We discuss the consequences of internal dissipations on the so-called efficiency at maximum power, in the light of our comparative analyses of exoreversibility and endoreversibility on the one hand, and of two classes of heat engines, autonomous and periodically-driven, on the other hand. Finally, basing our analysis on energy conservation, we also discuss recent works which claim the possibility to overcome the traditional boundaries on efficiency imposed by finite-time thermodynamics in thermoelectric systems with broken time-reversal symmetry; this we do by introducing a "thermal" thermopower and an "electrical" thermopower which permits an analysis of the thermoelectric response of the TEG considering a possible dissymmetry between the electrical/thermal and the thermal/electrical couplings.
description: Revised version
Weak decays of $B_s$ mesons to $D_s$ mesons in the relativistic quark model
Creators: name: Faustov, R. N.
name: Galkin, V. O.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The form factors of weak decays of $B_s$ mesons to ground state $D_s^{(*)}$ mesons as well as to their radial $D_s^{(*)}(2S)$ and orbital $D_{sJ}^{(*)}$ excitations are calculated in the framework of the relativistic quark model based on the quasipotential approach. All relativistic effects, including contributions of intermediate negative-energy states and boosts of the meson wave functions, are consistently taken into account. As a result the form factors are determined in the whole kinematical range without additional phenomenological parametrizations and extrapolations. On this basis semileptonic decay branching fractions are calculated. Two-body nonleptonic $B_s$ decays are considered within the factorization approximation. The obtained results agree well with available experimental data.
description: 29 pages, 10 figures, version to be published in Physical Review D
FOSTERING STUDENT WELL-BEING THROUGH POSITIVE EDUCATION: A CASE STUDY BEFORE AND DURING COVID-19 LOCKDOWNS
Creators: name: Johnson, Alexander R
Publisher: name: ZAP journals
Year: 2023
Subjects: Well-being
, positive education
student mental health
positive psychology
remote learning
case study
COVID-19
pandemic

description: Over the past decade, positive education has emerged as a transformative approach, showcasing its efficacy in enhancing student mental health through various interventions. While research has substantiated the positive outcomes associated with this approach, there remains a dearth of literature on the specific processes employed by schools to integrate positive education into their systems. This qualitative case study explores the positive education framework within a school setting, offering insights into its implementation before and during the COVID-19 pandemic. Utilizing the SEARCH framework, encompassing strengths, emotional management, attention and awareness, relationships, coping, and habits and goals, the study delves into how the school navigated on-campus learning pre-COVID-19 and adapted during periods of remote learning amid the global pandemic. Findings underscore the significance of a positive education framework, staff training, well-being initiatives for both students and staff, and the establishment of a common language for positive education as crucial elements fostering a sustained culture of well-being. This case study aims to inspire schools to prioritize student well-being as a preventive measure during normalcy and as a tool for crisis management in challenging times.
A general approach to Read's type constructions of operators without non-trivial invariant closed subspaces
Creators: name: Grivaux, Sophie
name: Roginskaya, Maria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We present a general method for constructing operators without non-trivial invariant closed subsets on a large class of non-reflexive Banach spaces. In particular, our approach unifies and generalizes several constructions due to Read of operators without non-trivial invariant subspaces on the spaces $\ell_{1}$, $c_{0}$ or $\oplus_{\ell_{2}}J$, and without non-trivial invariant subsets on $\ell_{1}$. We also investigate how far our methods can be extended to the Hilbertian setting, and construct an operator on a quasireflexive dual Banach space which has no non-trivial $w^{*}$-closed invariant subspace.
description: Minor modifications
Additional file 3 of Frequent tRNA gene translocation towards the boundaries with control regions contributes to the highly dynamic mitochondrial genome organization of the parasitic lice of mammals
Creators: name: Dong, Wen-Ge
name: Dong, Yalun
name: Guo, Xian-Guo
name: Shao, Renfu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: PCR amplicons generated from the mitochondrial (mt) minichromosomes of the Asian grey shrew louse, Polyplax reclinata. (A) Lane 1: amplicon of S1-S2-rrnS-C minichromosome generated with the primer pair 12S364F-12S364R. Lane 2: amplicon of M-L1-rrnL-V minichromosome generated with the primer pair 16S364F-16S364R. Lane 3: 500 bp Ladder (Tiangen) (band size in bp indicated). Lane 4: amplicons of coding regions of all mt minichromosomes generated with the primer pair 364 F-364R. Lane 5: GeneRuler 100 bp DNA Ladder (Thermo Scientific) (band size in bp indicated). The lane to the right of lane 2 is irrelevant to this manuscript. The lane to the left of lane 3 is empty. (B) Lane 1: 1 kb ladder (Tiangen) (band size in bp indicated); Lanes 2–10: amplicons of individual mt minichromosomes, T-D-Y-cox2-nad6-A, R-nad4L-P-cox3, Q-nad2-N, nad1 -G-nad3-W (gene underlined has opposite transcription orientation to other genes), K-nad4, H-nad5-F, E-cob-I, cox1-L2, atp8-atp6. Details of the primers used to amplify individual mt minichromosomes are provided in Additional file 2.
Micro-CT Analysis Applied to Lime Mortars for Damage Assessment Due to Accelerated Weathering
Creators: name: Valdez Madrid, Dulce Elizabeth
name: De Belie, Nele
name: Cnudde, Veerle
Publisher: name: Zenodo
Year: 2022

description: Weathering of construction materials is one of the main causes for building deterioration and failure. Amongst some of the most important factors contributing to this outcome is the presence of salts in the system and their crystallization/dissolution behavior during ageing. These salts occupy the space within the pore network of the materials and manifests itself only once some damage has already been caused. It is of outmost importance to develop efficient methods for testing, evaluating and development of damage prediction of this phenomena to obtain better and more durable materials. This research intends to employ two contamination regimes to test the durability of the mortar mixtures. X-ray micro-computed tomography will be utilized as main tool for the assessment of damage due to salt crystallization on lime-based mortars in a non-destructive manner.
Evaluating local correlation tracking using CO5BOLD simulations of solar granulation
Creators: name: Verma, M.
name: Steffen, M.
name: Denker, C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Flows on the solar surface are linked to solar activity, and LCT is one of the standard techniques for capturing the dynamics of these processes by cross-correlating solar images. However, the link between contrast variations in successive images to the underlying plasma motions has to be quantitatively confirmed. Radiation hydrodynamics simulations of solar granulation (e.g.,CO5BOLD) provide access to both the wavelength-integrated, emergent continuum intensity and the 3D velocity field at various heights in the solar atmosphere. Thus, applying LCT to continuum images yields horizontal proper motions, which are then compared to the velocity field of the simulated (non-magnetic) granulation. In this study, we evaluate the performance of an LCT algorithm previously developed for bulk-processing Hinode G-band images, establish it as a quantitative tool for measuring horizontal proper motions, and clearly work out the limitations of LCT or similar techniques designed to track optical flows. Horizontal flow maps and frequency distributions of the flow speed were computed for a variety of LCT input parameters including the spatial resolution, the width of the sampling window, the time cadence of successive images, and the averaging time used to determine persistent flow properties. Smoothed velocity fields from the hydrodynamics simulation at three atmospheric layers (log tau=-1,0,and +1) served as a point of reference for the LCT results. LCT recovers many of the granulation properties, e.g.,the shape of the flow speed distributions, the relationship between mean flow speed and averaging time, and also--with significant smoothing of the simulated velocity field--morphological features of the flow and divergence maps. However, the horizontal proper motions are grossly underestimated by as much as a factor of three. The LCT flows match best the flows deeper in the atmosphere at log tau=+1.
description: 11 pages, 16 figures, accepted for publication in Astronomy and Astrophysics
The gravity dual of supersymmetric gauge theories on a two-parameter deformed three-sphere
Creators: name: Martelli, Dario
name: Passias, Achilleas
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present rigid supersymmetric backgrounds for three-dimensional N=2 supersymmetric gauge theories, comprising a two-parameter U(1)xU(1)-invariant deformed three-sphere, and their gravity duals. These are described by supersymmetric solutions of four-dimensional N=2 gauged supergravity with a self-dual metric on the ball and different instantons for the graviphoton field. We find two types of solutions, distinguished by their holographic free energies. In one type the holographic free energy is constant, whereas in another type it depends in a simple way on the parameters and is generically complex. This leads to a conjecture for the localized partition function of a class of N=2 supersymmetric gauge theories on these backgrounds.
description: 27 pages, 1 figure; v2: typos fixed, minor changes, one reference added
Irreducible subshifts associated with $\tilde A_2$ buildings
Creators: name: Robertson, Guyan
name: Steger, Tim
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: Primary 51E24, 51E20, Secondary 37B50

description: Let $Γ$ be a group of type rotating automorphisms of a building $\cB$ of type $\widetilde A_2$, and suppose that $Γ$ acts freely and transitively on the vertex set of $\cB$. The apartments of $\cB$ are tiled by triangles, labelled according to $Γ$-orbits. Associated with these tilings there is a natural subshift of finite type, which is shown to be irreducible. The key element in the proof is a combinatorial result about finite projective planes.
Adaptive Reduced-Rank RLS Algorithms based on Joint Iterative Optimization of Filters for Space-Time Interference Suppression
Creators: name: de Lamare, Rodrigo C.
name: Sampaio-Neto, Raimundo
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper presents novel adaptive reduced-rank filtering algorithms based on joint iterative optimization of adaptive filters. The novel scheme consists of a joint iterative optimization of a bank of full-rank adaptive filters that constitute the projection matrix and an adaptive reduced-rank filter that operates at the output of the bank of filters. We describe least squares (LS) expressions for the design of the projection matrix and the reduced-rank filter and recursive least squares (RLS) adaptive algorithms for its computationally efficient implementation. Simulations for a space-time interference suppression in a CDMA system application show that the proposed scheme outperforms in convergence and tracking the state-of-the-art reduced-rank schemes at about the same complexity.
description: 3 figures. arXiv admin note: substantial text overlap with arXiv:1205.4390, arXiv:1301.2696
Additional file 4 of Frequent tRNA gene translocation towards the boundaries with control regions contributes to the highly dynamic mitochondrial genome organization of the parasitic lice of mammals
Creators: name: Dong, Wen-Ge
name: Dong, Yalun
name: Guo, Xian-Guo
name: Shao, Renfu
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 4: Alignment of the non-coding region (NCR) sequences of 11 mitochondrial minichromosomes of the Asian grey shrew louse, Polyplax reclinata. The primer pair, 364 F and 364R, were used to amplify the coding regions of the 11 minichromosomes (see also Additional file 3). Asterisk symbol “*” indicates conserved nucleotides; hyphen “-” indicates absent nucleotides.
Quantum motion on a torus as a submanifold problem in a generalized Dirac's theory of second-class constraints
Creators: name: Xun, D. M.
name: Liu, Q. H.
name: Zhu, X. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A generalization of the Dirac's canonical quantization theory for a system with second-class constraints is proposed as the fundamental commutation relations that are constituted by all commutators between positions, momenta and Hamiltonian so they are simultaneously quantized in a self-consistent manner, rather than by those between merely positions and momenta so the theory either contains redundant freedoms or conflicts with experiments. The application of the generalized theory to quantum motion on a torus leads to two remarkable results: i) The theory formulated purely on the torus, i.e., based on the so-called the purely intrinsic geometry, conflicts with itself. So it provides an explanation why an intrinsic examination of quantum motion on torus within the Schrodinger formalism is improper. ii) An extrinsic examination of the torus as a submanifold in three dimensional flat space turns out to be self-consistent and the resultant momenta and Hamiltonian are satisfactory all around.
description: 10 pages, no figure, typos added, introduction rewritten
Electric Field Effects on the Optical Vibrations in AB-Stacked Bilayer Graphene
Creators: name: Stein, R.
name: Hughes, D.
name: Yan, Jia-An
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using first-principles methods, we show that an applied perpendicular electric field $E$ breaks the inversion symmetry of AB-stacked bilayer graphene (BLG), thereby slightly mixing the two in-plane high-energy optical vibrations ($E_g$ and $E_u$ modes). The mixed amplitudes increase parabolically with respect to the field strength when $E$$$2.0 V/nm. In contrast, the mixing effect on the out-of-plane vibrations ($A_{1g}$ and $A_{2u}$ modes) is found to be much stronger, with the mixed amplitudes nearly an order of magnitude larger than those for the in-plane modes. For the two in-plane modes, we then calculate their phonon linewidths and frequency shifts as a function of the electric field as well as the Fermi level. Our results reveal delicate interplay between electrons and phonons in BLG, tunable by the applied fields and charge carrier densities.
description: 5 pages, 4 figures, to be published in PRB as a Rapid Communication
Reuse Potential of Building Materials Derived From Existing Dwellings
Creators: name: Devos, Katrien
name: Steeman, Marijke
name: Devlieger, Lionel
Publisher: name: Zenodo
Year: 2022

description: In recent years, environmental efforts in the building sector were mainly concentrated on reducing the operational energy while a well-considered use of materials is at least as important to further reduce our ecological footprint. The concept ‘Urban mining’ considers buildings as material banks, which can dismantled into valuable components and deliver materials to reuse in other building projects. This PhD aims to gain more insight in the reuse potential of building materials derived from single family and small multi-family dwellings, with a focus on social housing. In the first place, the typical construction assemblies and building materials in 10 selected case studies of different construction periods will be mapped. For these materials, technical criteria that impact the reuse potential (e.g. ease of disassembly, exposure, etc.) will be researched. Both the financial costs and the environmental impact of reuse (i.e. reclamation processes, storage, etc.) will be investigated for at least 10 building materials using LCC and LCA. Based on the technical criteria, LCC and LCA, a comprehensive framework will be developed allowing various stakeholders etc. to gain insight in the reuse potential of existing building materials.
Persistent currents in quantum phase slip rings
Creators: name: Semenov, Andrew G.
name: Zaikin, Andrei D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate the effect of interacting quantum phase slips on persistent current and its fluctuations in ultrathin superconducting nanowires and nanorings pierced by the external magnetic flux. We derive the effective action for these systems and map the original problem onto an effective sine-Gordon theory on torus. We evaluate both the flux dependent persistent current and the critical radius of the ring beyond which this current gets exponentially suppressed by quantum fluctuations. We also analyze fluctuations of persistent current caused by quantum phase slips. At low temperatures the supercurrent noise spectrum has the form of coherent peaks which can be tuned by the magnetic flux. Experimental observation of these peaks can directly demonstrate the existence of plasma modes in superconducting nanorings.
description: 11 pages, 5 figures
A Semi-Supervised Anomaly Detection Approach Detecting Mechanical Failures
Creators: name: Soete, Colin
name: Rademaker, Michaël
name: Van Hoecke, Sofie
Publisher: name: Zenodo
Year: 2022

description: Predictive maintenance attempts to prevent unscheduled downtime by scheduling maintenance before expected failures and/or breakdowns while maximally optimizing uptime. However, this is a non-trivial problem, requiring sufficient data analytics knowledge and labeled data, either to design supervised fault detection models, or to evaluate performance of unsupervised models. While today most companies collect data by adding sensors on their machinery, the majority of this data is unfortunately not labeled. Moreover, labeling requires expert knowledge and is very cumbersome. To solve this mismatch, we present an architecture that guides the experts so they only have to label a very small subset compared to today's standard labeling campaigns when designing predictive maintenance solutions. We use autoencoders to highlight potential anomalies and clustering approaches to group anomalies into (potential) failure types, and then present the resulting clustered anomalies to domain experts for labeling. This way, we enable domain experts to enrich routinely collected machine data with business intelligence via a user-friendly hybrid model, combining autoencoder models with labeling steps and supervised models. Ultimately, the labeled failure data allows creating better failure prediction models, which in turn enables more effective predictive maintenance. More specifically, our architecture opens up the data available within companies without cumbersome labeling tasks, so companies make maximum use of their data and expert knowledge to ultimately gain increased profit. Using our methodology, an average of 85 % of labeling gain is achieved when compared to standard labeling tasks.
Strain Solitons and Topological Defects in Bilayer Graphene
Creators: name: Alden, Jonathan S.
name: Tsen, Adam W.
name: Huang, Pinshane Y.
name: Hovden, Robert
name: Brown, Lola
name: Park, Jiwoong
name: Muller, David A.
name: McEuen, Paul L.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spontaneous symmetry-breaking, where the ground state of a system has lower symmetry than the underlying Hamiltonian, is ubiquitous in physics. It leads to multiply-degenerate ground states, each with a different "broken" symmetry labeled by an order parameter. The variation of this order parameter in space leads to soliton-like features at the boundaries of different broken-symmetry regions and also to topological point defects. Bilayer graphene is a fascinating realization of this physics, with an order parameter given by its interlayer stacking coordinate. Bilayer graphene has been a subject of intense study because in the presence of a perpendicular electric field, a band gap appears in its electronic spectrum [1-3] through a mechanism that is intimately tied to its broken symmetry. Theorists have further proposed that novel electronic states exist at the boundaries between broken-symmetry stacking domains [4-5]. However, very little is known about the structural properties of these boundaries. Here we use electron microscopy to measure with nanoscale and atomic resolution the widths, motion, and topological structure of soliton boundaries and topological defects in bilayer graphene. We find that each soliton consists of an atomic-scale registry shift between the two graphene layers occurring over 6-11 nm. We infer the minimal energy barrier to interlayer translation and observe soliton motion during in-situ heating above 1000 °C. The abundance of these structures across a variety samples, as well as their unusual properties, suggests that they will have substantial effects on the electronic and mechanical properties of bilayer graphene.
Additional file 1 of The role of angioembolization in the management of blunt renal injuries: a systematic review
Creators: name: Liguori, Giovanni
name: Rebez, Giacomo
name: Larcher, Alessandro
name: Rizzo, Michele
name: Cai, Tommaso
name: Trombetta, Carlo
name: Salonia, Andrea
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 1. Quality assessment using the modified Newcastle-Ottawa scale of included cohort
On critical behavior in nonlinear evolutionary PDEs with small viscosity
Creators: name: Dubrovin, Boris
name: Elaeva, Maria
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 35Q

description: We address the problem of general dissipative regularization of the quasilinear transport equation. We argue that the local behavior of solutions to the regularized equation near the point of gradient catastrophe for the transport equation is described by the logarithmic derivative of the Pearcey function, a statement generalizing the result of A.M.Il'in. We provide some analytic arguments supporting such conjecture and test it numerically.
description: 16 pages, 7 figures; a reference added
Strong singularity for subalgebras of finite factors
Creators: name: Robertson, Guyan
name: Sinclair, Allan M.
name: Smith, Roger R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L10, 22D25

description: In this paper we develop the theory of strongly singular subalgebras of von Neumann algebras, begun in earlier work. We mainly examine the situation of type $\tto$ factors arising from countable discrete groups. We give simple criteria for strong singularity, and use them to construct strongly singular subalgebras. We particularly focus on groups which act on geometric objects, where the underlying geometry leads to strong singularity.
Limits on Lepton Flavor Violation from μ-e-conversion
Creators: name: Gonzalez, Marcela
name: Gutsche, Thomas
name: Helo, Juan Carlos
name: Kovalenko, Sergey
name: Lyubovitskij, Valery E.
name: Schmidt, Ivan
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We revisit the status of Lepton Flavor Violating (LFV) μe qq contact interactions from the view point of μ- e -conversion in nuclei. We consider their contribution to this LFV process via the two mechanisms on the hadronic level: direct nucleon and meson exchange ones. In the former case the quarks are embedded directly into the nucleons while in the latter in mesons which then interact with nucleons in a nucleus. We revise and in some cases reevaluate the hadronic parameters relevant for both mechanisms and calculate the contribution of the above mentioned contact interactions in coherent μ- e -conversion in various nuclei. Then we update the existing upper bounds and also derive new ones for the scales of the μe qq contact interactions from the experimental limits on the capture rates of μ- e -conversion. We compare these limits with the ones derived in the literature from other LFV processes and comment on the prospects of LHC searches related to the contact μe qq interactions.
description: 15 pages, 1 figure, text partially modified, typo in eq. (5) fixed, results and conclusions unchanged
Real-space density functional theory on graphical processing units: computational approach and comparison to Gaussian basis set methods
Creators: name: Andrade, Xavier
name: Aspuru-Guzik, Alán
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We discuss the application of graphical processing units (GPUs) to accelerate real-space density functional theory (DFT) calculations. To make our implementation efficient, we have developed a scheme to expose the data parallelism available in the DFT approach; this is applied to the different procedures required for a real-space DFT calculation. We present results for current-generation GPUs from AMD and Nvidia, which show that our scheme, implemented in the free code Octopus, can reach a sustained performance of up to 90 GFlops for a single GPU, representing a significant speed-up when compared to the CPU version of the code. Moreover, for some systems our implementation can outperform a GPU Gaussian basis set code, showing that the real-space approach is a competitive alternative for DFT simulations on GPUs.
description: 16 pages, 19 figures
Terahertz Communication: A Story of Bandwidth and Silicon Photonic Integration
Creators: name: Maes, Dennis
name: Peytavit, Emilien
name: Kuyken, Bart
name: Lemey, Sam
Publisher: name: Zenodo
Year: 2022

description: The need for faster wireless data is ever-increasing. This puts pressure on the radio spectrum as most sub-6 GHz bands are already congested. Moving to higher bands, in the mmWave and Terahertz (THz) spectrum, unlocks large ranges of bandwidth. At these THz frequencies, however, high-gain directive beams are needed to compensate the higher path loss. Phased Antenna Arrays (PAA) provide this gain but need efficient beamforming feeding networks. In contrast to all-electrical approaches, an optical beamforming network (OBFN) is able to scale to large planar arrays. This is thanks to its small-footprint – as the radio signals are modulated on an optical carrier with a much smaller waveguide - and low-loss waveguides in Silicon Photonic (SiPh) platforms - feeding every individual antenna element. Generating THz signals is then only limited by the efficiency of the photomixer, i.e. a photodetector that converts the beat note of two optical signals to a THz signal. To this end, we have integrated a photodiode with a bandwidth of 155 GHz on a Silicon Nitride (SiN) waveguide and demonstrated its capabilities in a back-to-back THz link at 280 GHz. Doing so, we achieved data rates beyond 100 Gbit/s.
Does a Quantum Particle Know its Own Energy?
Creators: name: Sorkin, Rafael D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: If a wave function does not describe microscopic reality then what does? Reformulating quantum mechanics in path-integral terms leads to a notion of "precluded event" and thence to the proposal that quantal reality differs from classical reality in the same way as a set of worldlines differs from a single worldline. One can then ask, for example, which sets of electron trajectories correspond to a Hydrogen atom in its ground state and how they differ from those of an excited state. We address the analogous questions for simple model that replaces the electron by a particle hopping (in discrete time) on a circular lattice.
description: plainTeX, 15 pages, 2 figures. To appear in Journal of Physics: Conf. Ser. Most current version is available at http://www.perimeterinstitute.ca/personal/rsorkin/some.papers/ (or wherever my home-page may be, such as http://www.physics.syr.edu/~sorkin/some.papers/)
Polyrhachis
Creators: name: Forel, A.
Publisher: name: L'Imprimerie Nationale
Year: 1891
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Polyrhachis

description: Genre POLYRHACHIS.
Polyrhachis, Shuckard, History of Insects (1840) et Smith, Mayr, Roger.
Hoplomyrmus, Gerstäcker, Mon. Berichte Preuss. Akad. (1858).
Hoplomyrmus, Gerstäcker, dans Peters Reise n. Mozambique (1858).
Hemioptica, Roger, Berliner entomologische Zeitschrift (1862), p. 238.
[[worker]], [[queen]] et [[male]]. Nymphes entourées d'un cocon. Une seule sorte [[worker]], à tête de moyenne grandeur. La moitié de la longueur de tout l'abdomen est formée par le premier segment (chez le [[male]], le premier segment est parfois un peu plus court). La tête n'est pas tronquée antérieurement.
[[worker]] et [[queen]]. Abdomen sphérique. Les arêtes frontales et la partie du front située entre elles proéminent fortement entre les articulations des antennes, ce qui donne au front, vu de profil, une protubérance marquée (ce caractere se retrouve chez certains Camponotus). Corps en général épineux.
Ce genre, très rapproché des deux précédents, s'en distingue par l'ouvriere non polymorphe et par la forme de son abdomen. Il est vrai que les Polyrhachis se distinguent en outre de la plupart des Camponotus par les épines de leur thorax et de leur écaille, mais il existe aussi des Camponotus épineux comme les Polyrhachis, et, de plus, des Polyrhachis sans épines ou peu s'en faut (P. rastellata, Latreille).
description: Published as part of Forel, A., 1891, Histoire naturelle des Hymenopteres. Deuxieme partie: Les Formicides., pp. 1-231 in Histoire Physique, Naturelle et Politique de Madagascar., Paris :L'Imprimerie Nationale on pages 77-78, DOI: 10.5281/zenodo.9896
Additional file 1 of Correlation between antibiotic consumption and the incidence of healthcare facility-onset Clostridioides difficile infection: a retrospective chart review and analysis
Creators: name: Yun, Ji Hyun
name: Park, Ga Eun
name: Ki, Hyun Kyun
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology
subject: Computational Biology

description: Additional File 1: Table 1. Correlation analysis between antibiotic consumption and the incidence of HO-CDI without a time interval.
Features of charge transport in Mo/n-Si structures with a Shottky barrier
Creators: name: Olikh, Oleg
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The forward and reverse current-voltage characteristics of the Mo/n-Si Schottky barrier structures have been studied experimentally in the temperature range 130-330 K. It is found that Shottky barrier height increases and time ideality factor decreases with temperature increasing. The obtained results have been analyzed in the framework of inhomogeneous contact model. The mean and standart deviation of Shottky barrier heigh are determined: 0.872 V and 0.099 V at $=130-220 K and 0.656 V and 0.036 V at T=230-330 K respectively. It is shown that at reverse bias the main processes of current flow are the thermionic emission over an inhomogeneous barrier and tunneling.
description: 9 pages, 9 figures
Additional file 1 of The Pre-Diabetes Interventions and Continued Tracking to Ease-out Diabetes (Pre-DICTED) program: study protocol for a randomized controlled trial
Creators: name: Yeung, Kar-Fu
name: Gandhi, Mihir
name: Lam, Amanda Yun Rui
name: Julianty, Selly
name: Chia, Alvin Yeow Meng
name: Tan, Gilbert Choon Seng
name: Goh, Su-Yen
name: Ho, Emily Tse Lin
name: Koh, Angela Fang Yung
name: Tan, Gavin Siew Wei
name: Shum, Eugene Jin Wen
name: Finkelstein, Eric A.
name: Jafar, Tazeen H.
name: Teoh, Yee Leong
name: van Dam, Rob M.
name: Whitton, Clare
name: Thumboo, Julian
name: Bee, Yong Mong
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 60506 Virology
subject: FOS: Biological sciences
subject: Computational Biology

description: Additional file 1.