cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Generalized Eigenvectors for Resonances in the Friedrichs Model and Their Associated Gamov Vectors
Creators: name: Baumgärtel, Hellmut
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 47A40, 47D06, 81U20

description: A Gelfand triplet for the Hamiltonian H of the Friedrichs model on R with finite-dimensional multiplicity space K, is constructed such that exactly the resonances (poles of the inverse of the Livsic-matrix) are (generalized) eigenvalues of H. The corresponding eigen-antilinearforms are calculated explicitly. Using the wave matrices for the wave (Moller) operators the corresponding eigen-antilinearforms on the Schwartz space S for the unperturbed Hamiltonian are also calculated. It turns out that they are of pure Dirac type and can be characterized by their corresponding Gamov vector, which is uniquely determined by restriction of S to the intersection of S with the Hardy space of the upper half plane. Simultaneously this restriction yields a truncation of the generalized evolution to the well-known decay semigroup of the Toeplitz type for the positive half line on the Hardy space. That is: exactly those pre-Gamov vectors (eigenvectors of the decay semigroup) have an extension to a generalized eigenvector of H if the eigenvalue is a resonance and if the multiplicity parameter k is from that subspace of K which is uniquely determined by its corresponding Dirac type antilinearform.
description: 16 pages
Investigating the feasibility of implementing Pavegen energy : harvesting piezoelectric floor tiles in the new SUB
Creators: name: Cramm, Joel
name: El-Sherif, Ammar
name: Lee, Jinwook
name: Loughlin, Jamie
Publisher: name: The University of British Columbia
Year: 2012

description: This report is a triple bottom-line assessment which investigates the economic, environmental and social aspects of installing eight energy-harvesting Pavegen piezoelectric floor tiles in the new Student Union building at the University of British Columbia. The Pavegen floor tiles use the kinetic energy of a footstep to strain a piezoelectric material. This strain produces a voltage, which when integrated into a circuit can be used to produce green electricity. This electricity can be stored in batteries and used to power various devices such as a display board in the foyer of the new SUB. The investigation revealed that the installation of the Pavegen tiles would contribute to environmental awareness by promoting sustainability and green energy generation, and the amounts of electricity harvested over their 5 year lifespan could recover the costs of initial purchase, transport, installation, maintenance and disposal of the tiles. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Astrophysical inputs on the SUSY dark matter annihilation detectability
Creators: name: Prada, Francisco
name: Klypin, Anatoly
name: Flix, J.
name: Martinez, M.
name: Simonneau, E.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: If dark matter (DM), which is considered to constitute most of the mass of galaxies, is made of supersymmetric (SUSY) particles, the centers of galaxies should emit gamma-rays produced by their self-annihilation. We present accurate estimates of continuum gamma-ray fluxes due to neutralino annihilation in the central regions of the Milky Way. We use detailed models of our Galaxy, which satisfy available observational data, and include some important physical processes, which were previously neglected. Our models predict that spatially extended annihilation signal should be detected at high confidence levels by incoming experiments assuming that neutralinos make up most of the DM in the Universe and that they annihilate according to current SUSY models.
description: 4 pages, submitted to Physical Review Letters
Bibliography on stable distributions, processes and related topics
Creators: name: Nolan, John
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: The following sections are a start on organizing references on stable distributions by topic. It is far from complete. Starting on page 16 there is an extensive list of papers on stable distributions, many of which are not included in the first section. Some of the papers there do not directly refer to stable dis- tributions. Someday I may have the time to edit those out, but for now please ignore those references. This list includes a bibliography file provided by Gena Samorodnitsky from Cornell University. I would like to keep this list correct and up-to-date. If you have corrections or additions, please e-mail them to me at the above address, and suggest where to place your references in one of the sections below. Please provide all references in BibTeX form, especially if you have more than a few additions. (See http://en.wikipedia.org/wiki/BibTeX for basic information on BibTEX.) If you can, send a copy of your papers along.
Transient chaos under coordinate transformations in relativistic systems
Creators: name: Fernández, D. S.
name: López, Á. G.
name: Seoane, J. M.
name: Sanjuán, M. A. F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We use the Hénon-Heiles system as a paradigmatic model for chaotic scattering to study the Lorentz factor effects on its transient chaotic dynamics. In particular, we focus on how time dilation occurs within the scattering region by measuring the time in a clock attached to the particle. We observe that the several events of time dilation that the particle undergoes exhibit sensitivity to initial conditions. However, the structure of the singularities appearing in the escape time function remains invariant under coordinate transformations. This occurs because the singularities are closely related to the chaotic saddle. We then demonstrate using a Cantor-like set approach that the fractal dimension of the escape time function is relativistic invariant. In order to verify this result, we compute by means of the uncertainty dimension algorithm the fractal dimensions of the escape time functions as measured with inertial and comoving with the particle frames. We conclude that, from a mathematical point of view, chaotic transient phenomena are equally predictable in any reference frame and that transient chaos is coordinate invariant.
Isometrus (Reddyanus) besucheti Vachon 1982
Creators: name: Kovařík, František
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Isometrus
Isometrus besucheti

description: Isometrus (Reddyanus) besucheti Vachon, 1982
 Isometrus (Reddyanus) besucheti Vachon, 1982: 93; Kovařík, 1994: 202; Kovařík, 1997a: 8; Kovařík, 1998a: 36; Kovařík, 1998b: 111; Fet & Lowe, 2000: 151; Lourenço & Huber, 2002: 267; Huber et al., 2002: 53.
TYPE LOCALITY AND TYPE REPOSITORY. Ambagaswewa, Sri Lanka; MHNG.
DISTRIBUTION. Sri Lanka (Vachon, 1982: 93).
description: Published as part of Kovařík, František, 2003, A review of the genus Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with descriptions of four new species from Asia and Australia, pp. 1-19 in Euscorpius 10 (10) on pages 5-6, DOI: 10.18590/euscorpius.2003.vol2003.iss10.1, http://zenodo.org/record/4672850
Time Evolution of the Microwave Second-Harmonic Response of MgB2 Superconductor
Creators: name: Gallitto, A. Agliolo
name: Vigni, M. Li
name: Vaglica, G.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report on transient effects in the microwave second-order response of two ceramic MgB2 samples. The time evolution of the second-harmonic signal is investigated for about 500 s after the sample has been exposed to a variation of the dc magnetic field. We suggest that during the first seconds the response is determined by diffusive motion of fluxons, while in the time scale of minutes it is ruled by magnetic relaxation over the surface barrier.
description: 4 pages, 2 figures (Proceedings of the Third European Conference on Vortex Matter in Superconductors, to be published in Physica C)
Isometrus (Reddyanus) isadensis Tikader & Bastawade 1983
Creators: name: Kovařík, František
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Isometrus
Isometrus isadensis

description: Isometrus (Reddyanus) isadensis Tikader &   Bastawade, 1983, nomen dubium
 Isometrus (Raddyanus) isadensis Tikader & Bastawade, 1983: 280.
 Isometrus (Reddyanus) isadensis: Kovařík, 1994: 202.
 Isometrus (Isometrus) isadensis: Kovařík, 1997a: 8; Kovařík, 1998b: 111; Fet & Lowe, 2000: 147.
TYPE LOCALITY AND TYPE REPOSITORY. Moshi river near Isad vill., Gangakhed, Aurangabad, Maharashtra, India; NZSI.
 COMMENTS. This species was described in the subgenus Reddyanus (misspelled Raddyanus [sic]) because of the position of trichobothrium db (see fig. 817 in Tikader & Bastawade, 1983: 285), which Tikader & Bastawade (1983: 286) used to place also Isometrus europaeus (Linné, 1758) (= Isometrus maculatus (DeGeer, 1778)) in that subgenus. Without seeing the types, this and other incorrect information in that work would cause me to place the species in the subgenus Isometrus. This is primarily due to Fig. 814 of Tikader & Bastawade (1983: 285), which is a rendition of a male showing sexual dimorphism characteristic of the subgenus Isometrus, i.e. segments of pedipalp longer than in the female. Unless it becomes possible to examine the types, it is fruitless to speculate which characters given in the description are correct or erroneous. Since according to the description this species differs from all known species of the subgenus Reddyanus in sexual dimorphism and from all species of the subgenus Isometrus in the position of trichobothrium db, the only option available to me is to consider it a nomen dubium.
description: Published as part of Kovařík, František, 2003, A review of the genus Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with descriptions of four new species from Asia and Australia, pp. 1-19 in Euscorpius 10 (10) on page 8, DOI: 10.18590/euscorpius.2003.vol2003.iss10.1, http://zenodo.org/record/4672850
On the application of 'photon+jet' process for setting the absolute scale of jet energy and determining the gluon distribution at the Tevatron in Run II
Creators: name: Bandurin, D. V.
name: Skachkov, N. B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The consequences of application of new set of criteria, proposed in our previous works, for the improvement of a jet energy calibration accuracy with the process "p~p->photon+jet+X" at Tevatron and for a reduction of background events contribution are studied. The efficiencies of the used selection criteria are estimated. The distributions of these events over photon Pt and jet pseudorapidity are presented. The features of "photon+jet" events in the central calorimeter region of the D0 detector (|η|<0.7) are investigated. It is also shown that the samples of "photon+jet" events, selected with the cuts used for the jet energy calibration, may have the statistics sufficient for determining the gluon distribution function of a proton in the region of 2*10^{-3}< x < 1.0 and the values of Q^2 by one order higher than that reached in the experiments at HERA. Monte Carlo events produced by the PYTHIA 5.7 generator are used for this aim.
description: Subm. to "Physics of Elementary Particles and Atomic Nuclei" (54 pages)
Estimation of stable spectral measures
Creators: name: Nolan, John
name: Panorska, Anna K.
name: McCulloch, J. Huston
Publisher: name: American University
Year: 2023

description: We present two new estimators of a stable spectral measure. One is based on the empirical characteristic unction, the other is based on one dimensional projections o the data. We compare these estimators with the Rachev-Xin-Cheng estimator in an empirical study. Their applications in modeling financial portfolios are also discussed.
Ballistic transport in disordered Dirac and Weyl semimetals
Creators: name: Kobayashi, Koji
name: Wada, Miku
name: Ohtsuki, Tomi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the dynamics of Dirac and Weyl electrons in disordered point-node semimetals. The ballistic feature of the transport is demonstrated by simulating the wave-packet dynamics on lattice models. We show that the ballistic transport survives under a considerable strength of disorder up to the semimetal-metal transition point, which indicates the robustness of point-node semimetals against disorder. We also visualize the robustness of the nodal points and linear dispersion under broken translational symmetry. The speed of the wave packets slows down with increasing disorder strength, and vanishes toward the critical strength of disorder, hence becoming the order parameter. The obtained critical behavior of the speed of the wave packets is consistent with that predicted by the scaling conjecture.
description: 5 pages, 4 figures
Estimation of stable spectral measures
Creators: name: Nolan, John
name: Panorska, Anna K.
name: McCulloch, J. Huston
Publisher: name: American University (Washington, D.C.); University of Tennessee at Chattanooga; Ohio State University
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: We present two new estimators of a stable spectral measure. One is based on the empirical characteristic unction, the other is based on one dimensional projections o the data. We compare these estimators with the Rachev-Xin-Cheng estimator in an empirical study. Their applications in modeling financial portfolios are also discussed.
Criterion of Quantum Phase Synchronization in Continuous Variable Systems by Local Measurement
Creators: name: Ma, Shao-Qiang
name: Zheng, Xiao
name: Zhang, Guo-Feng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Phase synchronization was proved to be unbounded in quantum level, but the witness of phase synchronization is always expensive in terms of the quantum resource and non-local measurements involved. Based on the quantum uncertainty relation, we construct two local criterions for the phase synchronization in this paper. The local criterions indicate that the phase synchronization in the quantum level can be witnessed only by the local measurements, and the deduction has been verified in the optomechanics system in numerical way. Besides, by analyzing the physical essence of the phase synchronization in quantum level, we show that one can prepare a state, which describes two synchronized oscillators with no entanglement between them. Thus, the entanglement resource is not necessary in the occurrence of the ideal phase synchronization, and also the reason for this phenomenon is discussed.
Maximum likelihood estimation and diagnostics for stable distributions
Creators: name: Nolan, John
Publisher: name: American University
Year: 2023

description: A program for maximum likelihood estimation of general stable parameters is described. The Fisher information matrix is computed, making large sample estimation of stable parameters a practical tool. In addition, diagnostics are developed for assessing the stability of a data set. Applications to simulated data, stock price data, foreign exchange rate data, radar data, and ocean wave energy are presented.
Maximum likelihood estimation and diagnostics for stable distributions
Creators: name: Nolan, John
Publisher: name: Springer
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: A program for maximum likelihood estimation of general stable parameters is described. The Fisher information matrix is computed, making large sample estimation of stable parameters a practical tool. In addition, diagnostics are developed for assessing the stability of a data set. Applications to simulated data, stock price data, foreign exchange rate data, radar data, and ocean wave energy are presented.
Modeling financial data with stable distributions
Creators: name: Nolan, John
Publisher: name: American University
Year: 2023

description: Stable distributions are a class of probability distributions that allow heavy tails and skewness. In addition to theoretical reasons for using stable laws, they are a rich family that can accurately model different kinds of financial data. We review the basic facts, describe programs that make it practical to use stable distributions, and give examples of these distributions in finance. A non-technical introduction to multivariate stable laws is also given.
Eastern Massasauga Detection Tool (Spreadsheet)
Creators: name: Crawford, John
name: Dreslik, Michael J.
name: Baker, Sarah J.
name: Phillips, Christopher A.
name: Peterman, William
Publisher: name: figshare
Year: 2020
Subjects: subject: Zoology
subject: FOS: Biological sciences

description: Our data for Eastern Massasaugas indicate land managers wanting to maximize efficiency should conduct surveys earlier in the day when solar irradiance is lower, shaded air temperatures are 20–26 °C, humidity is below 40%, and the mean 3-day maximum temperature is 10–18 °C. Surveys should last a minimum of 2 hours per searcher, and repeated visits should be made to larger sites (>8 ha) to account for lower detection probabilities with increasing site area. To simplify this decision-making process, we have developed a spreadsheet-based detection tool. A researcher or land manager can enter forecasted values for the significant parameters which influenced Eastern Massasauga detection and determine the probability of detection for the upcoming survey as well as mean number of searches required. Additionally, one can estimate detection probability after the survey by entering the actual parameter values recorded during the sampling period.
Renormalisation group improved small-x Green's function
Creators: name: Ciafaloni, M.
name: Colferai, D.
name: Salam, G. P.
name: Stasto, A. M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the basic features of the gluon density predicted by a renormalisation group improved small-x equation which incorporates both the gluon splitting function at leading collinear level and the exact BFKL kernel at next-to-leading level. We provide resummed results for the Green's function and its hard Pomeron exponent $ω_s(α_s)$, and for the splitting function and its critical exponent $ω_c(α_s)$. We find that non-linear resummation effects considerably extend the validity of the hard Pomeron regime by decreasing diffusion corrections to the Green's function exponent and by slowing down the drift towards the non-perturbative Pomeron regime. As in previous analyses, the resummed exponents are reduced to phenomenologically interesting values. Furthermore, significant preasymptotic effects are observed. In particular, the resummed splitting function departs from the DGLAP result in the moderate small-x region, showing a shallow dip followed by the expected power increase in the very small-x region. Finally, we outline the extension of the resummation procedure to include the photon impact factors.
description: 59 pages, 19 figures
Evolution of X-ray cluster scaling relations in simulations with radiative cooling and non-gravitational heating
Creators: name: Muanwong, Orrarujee
name: Kay, Scott T.
name: Thomas, Peter A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the redshift dependence of X-ray cluster scaling relations drawn from three hydrodynamic simulations of the LCDM cosmology: a Radiative model that incorporates radiative cooling of the gas, a Preheating model that additionally heats the gas uniformly at high redshift, and a Feedback model that self-consistently heats cold gas in proportion to its local star-formation rate. While all three models are capable of reproducing the observed local Lx-Tx relation, they predict substantially different results at high redshift (to z=1.5), with the Radiative, Preheating and Feedback models predicting strongly positive, mildly positive and mildly negative evolution, respectively. The physical explanation for these differences lies in the structure of the intracluster medium. All three models predict significant temperature fluctuations at any given radius due to the presence of cool subclumps and, in the case of the Feedback simulation, reheated gas. The mean gas temperature lies above the dynamical temperature of the halo for all models at z=0, but differs between models at higher redshift with the Radiative model having the lowest mean gas temperature at z=1.5. We have not attempted to model the scaling relations in a manner that mimics the observational selection effects, nor has a consistent observational picture yet emerged. Nevertheless, evolution of the scaling relations promises to be a powerful probe of the physics of entropy generation in clusters. First indications are that early, widespread heating is favored over an extended period of heating that is associated with galaxy formation.
description: Accepted for publication in ApJ. Minor changes following referee's comments
Modeling financial data with stable distributions
Creators: name: Nolan, John
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: Stable distributions are a class of probability distributions that allow heavy tails and skewness. In addition to theoretical reasons for using stable laws, they are a rich family that can accurately model different kinds of financial data. We review the basic facts, describe programs that make it practical to use stable distributions, and give examples of these distributions in finance. A non-technical introduction to multivariate stable laws is also given.
Hard spheres dynamics: weak vs hard collisions
Creators: name: Serre, Denis
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Dynamical Systems (math.DS)
subject: Classical Physics (physics.class-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We consider the motion of a finite though large number $N$ of hard spheres in the whole space $\mathbb{R}^n$. Particles move freely until they experience elastic collisions. We use our recent theory of Compensated Integrability in order to estimate how much the particles are deviated by collisions. Our result, which is expressed in terms of hodographs, tells us that only $O(N^2)$ collisions are significant.
Fluctuating Fronts as Correlated Extreme Value Problems: An Example of Gaussian Statistics
Creators: name: Panja, Debabrata
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In this paper, we view fluctuating fronts made of particles on a one-dimensional lattice as an extreme value problem. The idea is to denote the configuration for a single front realization at time $t$ by the set of co-ordinates $\{k_i(t)\}\equiv[k_1(t),k_2(t),...,k_{N(t)}(t)]$ of the constituent particles, where $N(t)$ is the total number of particles in that realization at time $t$. When $\{k_i(t)\}$ are arranged in the ascending order of magnitudes, the instantaneous front position can be denoted by the location of the rightmost particle, i.e., by the extremal value $k_f(t)=\text{max}[k_1(t),k_2(t),...,k_{N(t)}(t)]$. Due to interparticle interactions, $\{k_i(t)\}$ at two different times for a single front realization are naturally not independent of each other, and thus the probability distribution $P_{k_f}(t)$ [based on an ensemble of such front realizations] describes extreme value statistics for a set of correlated random variables. In view of the fact that exact results for correlated extreme value statistics are rather rare, here we show that for a fermionic front model in a reaction-diffusion system, $P_{k_f}(t)$ is Gaussian. In a bosonic front model however, we observe small deviations from the Gaussian.
description: 6 pages, 3 figures, miniscule changes on the previous version, to appear in Phys. Rev. E
Additional file 1 of Socioeconomic differences in psychiatric treatment before and after self-harm: an observational study of 4,280 adolescents and young adults
Creators: name: Pitkänen, Joonas
name: Remes, Hanna
name: Aaltonen, Mikko
name: Martikainen, Pekka
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Cancer
subject: Plant Biology

description: Additional file 1.
A Comprehensive Review for Breast Histopathology Image Analysis Using Classical and Deep Neural Networks
Creators: name: Zhou, Xiaomin
name: Li, Chen
name: Rahaman, Md Mamunur
name: Yao, Yudong
name: Ai, Shiliang
name: Sun, Changhao
name: Li, Xiaoyan
name: Wang, Qian
name: Jiang, Tao
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Breast cancer is one of the most common and deadliest cancers among women. Since histopathological images contain sufficient phenotypic information, they play an indispensable role in the diagnosis and treatment of breast cancers. To improve the accuracy and objectivity of Breast Histopathological Image Analysis (BHIA), Artificial Neural Network (ANN) approaches are widely used in the segmentation and classification tasks of breast histopathological images. In this review, we present a comprehensive overview of the BHIA techniques based on ANNs. First of all, we categorize the BHIA systems into classical and deep neural networks for in-depth investigation. Then, the relevant studies based on BHIA systems are presented. After that, we analyze the existing models to discover the most suitable algorithms. Finally, publicly accessible datasets, along with their download links, are provided for the convenience of future researchers.
description: 25 pages,19 figures
A Non-Gaussian Variational Approach to Fermi Polarons in One- and Two-dimensional Lattices
Creators: name: Liu, Ruijin
name: Shi, Yue-Ran
name: Zhang, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Fermi polaron problem of one mobile spin-up impurity immersed atop the bath consisting of spin-down fermions in one- and two-dimensional square lattices. We solve this problem by applying a variational approach with non-Gaussian states after separating the impurity and the background by the Lee-Low-Pines transformation. The ground state for a fixed total momentum can be obtained via imaginary time evolution for the variational parameters. For the one-dimensional case, the variational results are compared with numerical solutions of the matrix product state method with excellent agreement. In two-dimensional lattices, we focus on the dilute limit, and find a polaron--molecule evolution in consistence with previous results obtained by variational and quantum Monte Carlo methods for models in continuum space. Comparing to previous works, our method provides the lowest ground state energy in the entire parameter region considered, and has an apparent advantage as it does not need to assume {\it in priori} any specific form of the variational wave function.
description: 8 pages, 5 figures
A symmetry-breaking mechanism for the Z4 general-covariant evolution system
Creators: name: Bona, C.
name: Ledvinka, T.
name: Palenzuela, C.
name: Zacek, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The general-covariant Z4 formalism is further analyzed. The gauge conditions are generalized with a view to Numerical Relativity applications and the conditions for obtaining strongly hyperbolic evolution systems are given both at the first and the second order levels. A symmetry-breaking mechanism is proposed that allows one, when applied in a partial way, to recover previously proposed strongly hyperbolic formalisms, like the BSSN and the Bona-Massó ones. When applied in its full form, the symmetry breaking mechanism allows one to recover the full five-parameter family of first order KST systems. Numerical codes based in the proposed formalisms are tested. A robust stability test is provided by evolving random noise data around Minkowski space-time. A strong field test is provided by the collapse of a periodic background of plane gravitational waves, as described by the Gowdy metric.
description: figures added, text changed, accepted in PRD
A randomness test for stable data
Creators: name: Mohammadpour, Adel
name: Mohammad-Djafari, Ali
name: Nolan, John
Publisher: name: CompStat
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences

description: In this paper, we propose a new method for checking randomness of non-Gaussian stable data based on a characterization result. This method is more sensitive with respect to non-random data compared to the well known non-parametric randomness tests.
Additional file 2 of Socioeconomic differences in psychiatric treatment before and after self-harm: an observational study of 4,280 adolescents and young adults
Creators: name: Pitkänen, Joonas
name: Remes, Hanna
name: Aaltonen, Mikko
name: Martikainen, Pekka
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Cancer
subject: Plant Biology

description: Additional file 2.
Neighborhood child opportunity is associated with hospital length of stay following pediatric burn injury
Creators: name: McLean, Sean E
name: Akinkuotu, Adesola C
name: Gallaher, Jared
name: Williams, Felicia N
name: Phillips, Michael R
name: Burkbauer, Laura
name: Charles, Anthony G
Publisher: name: Elsevier
Year: 2024

description: INTRODUCTION: Pediatric burns are associated with socioeconomic disadvantage and lead to significant morbidity. The Child Opportunity Index (COI) is a well-validated measure of neighborhood characteristics associated with healthy child development. We sought to evaluate the relationship between COI and outcomes of burn injuries in children.
METHODS: We performed a single-institution retrospective review of pediatric (<16 years) burn admissions between 2015 and 2019. Based on United States residential zip codes, patients were stratified into national COI quintiles. We performed a multivariate Poisson regression analysis to determine the association between COI and increased length of stay.
RESULTS: 2095 pediatric burn admissions occurred over the study period. Most children admitted were from very low (n = 644, 33.2 %) and low (n = 566, 29.2 %) COI neighborhoods. The proportion of non-Hispanic Black patients was significantly higher in neighborhoods with very low (44.5 %) compared to others (low:28.8 % vs. moderate:11.9 % vs. high:10.5 % vs. very high:4.3 %) (p < 0.01). Hospital length of stay was significantly longer in patients from very low COI neighborhoods (3.6 ± 4.1 vs. 3.2 ± 4.9 vs. 3.3 ± 4.8 vs. 2.8 ± 3.5 vs. 3.2 ± 8.1) (p = 0.02). On multivariate regression analysis, living in very high COI neighborhoods was associated with significantly decreased hospital length of stay (IRR: 0.51; 95 % CI: 0.45-0.56).
CONCLUSION: Children from neighborhoods with significant socioeconomic disadvantage, as measured by the Child Opportunity Index, had a significantly higher incidence of burn injuries resulting in hospital admissions and longer hospital length of stay. Public health interventions focused on neighborhood-level drivers of childhood development are needed to decrease the incidence and reduce hospital costs in pediatric burns.
TYPE OF STUDY: Retrospective study LEVEL OF EVIDENCE: Level III.
A randomness test for stable data
Creators: name: Mohammadpour, Adel
name: Mohammad-Djafari, Ali
name: Nolan, John
Publisher: name: American University
Year: 2023

description: In this paper, we propose a new method for checking randomness of non-Gaussian stable data based on a characterization result. This method is more sensitive with respect to non-random data compared to the well known non-parametric randomness tests.
Działalność katedry języka greckiego Szkoły Głównej Koronnej w latach 1783-1795
Creators: name: Latos, Adam
Publisher: name: Zenodo
Year: 2024

description: The aim of my thesis is an attempt to analyse the activity of the Greek language faculty operating within the Principal Crown School in the years 1783-1795. The chronological framework is marked, by the separation of the School of Literature of the Moral College, within which the Greek language faculty operated, and by the Third Partition of the Polish-Lithuanian Commonwealth. My thesis consists of an introduction, three chapters, an ending and a bibliography. In the first chapter, I describe the development of classical philology, especially Hellenic studies, from the Renaissance to the Enlightenment, and also analyse the history of Hellenic studies at the Cracow Academy from the 15th to the 18th century. In the first chapter, I also analyse the role played by Hellenic studies during reforms of the Academy undertaken in the 70 of 18th century and I describe the collection of Hellenic books owned by university libraries. In the second chapter, I analyse the activities of the School of Literature within the Principal Crown School. In this chapter, I present the profiles of two Cracow’s Hellenists of this period: Krzysztof Idatte and Jacek Idzi Przybylski. Finally, in the second chapter, I describe the student community attending the School of Literature. The last chapter is devoted to didactic and scientific activity undertaken by Idatte and Przybylski. In this chapter, I analyse the lectures given by Krakow's Hellenists, editions of texts and teaching aids, translations, as well as scientific works published by Przybylski. In the third chapter, I also describe how the achievements of Krakow Hellenists were assessed, both in the 18th century and by later researchers.
Estimating the Productivity of Wheat Production: An Implication of Stochastic Frontier Production Function Model
Creators: name: Mehrjerdi, Mahla Zare
name: Mark, Tyler
name: Mehrjerdi, Mahla Zare
name: Mark, Tyler
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Production Economics
subject: Productivity Analysis
subject: productivity
subject: stochastic frontier-efficiency
subject: Cobb-Douglas
subject: wheat

description: Production resources are limited, world’s population is growing. One way to increase the production is to increase the area under cultivation, but this solution is not possible in all situations. Besides, increasing the cultivation area does not guarantee an increase in production. Another way is to increase the production is using more advanced machinery and production techniques. Wheat is the most strategic agricultural product in Iran. It forms the significant portion of Iranian diet. Policymakers have always been interested in new methods that can make the country independent of importing wheat. T reach this goal, it is essential to evaluate the productivity of wheat production. Using data from surveys done by Agriculture ministry of Iran, this study estimates the productivity of wheat production using a Cobb-Douglas production function in Tehran. The proposed method to estimate the productivity is Stochastic Frontier Production Function Model. The result suggests Farm size shows the highest marginal rate of productivity.
Comment on "Berezinskii-Kosterlitz-Thouless transition in two-dimensional dipolar stripes"
Creators: name: Cinti, Fabio
name: Boninsegni, Massimo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In a recent article [R. Bombin, F. Mazzanti and J. Boronat, Phys. Rev. A100, 063614 (2019)], it is contended that a two-dimensional system of dipolar bosons, with dipole moments aligned at particular angles with respect to the direction perpendicular to the plane of motion, featuring a "striped" crystalline ground state, in turn undergoes a Berezinskii-Kosterlitz-Thouless superfluid transition at low temperature, making it a two-dimensional supersolid. We show here that the results provided therein, obtained by means of Quantum Monte Carlo simulations, do not actually support such a conclusion. Rather, they are consistent with that expounded in our work [J. Low Temp. Phys. 196, 413 (2019)], namely that the striped ground state is insulating (i.e., non-superfluid in the conventional sense), essentially behaving like a system of quasi-one-dimensional, parallel independent chains. We attribute the incorrectness of the conclusion reached by Bombin et al. to the very small sizes of their simulated system, which do not allow for a reliable extrapolation to the thermodynamic limit.
description: 3 pages, accepted for publication in Physical Review A
Additional file 3 of Socioeconomic differences in psychiatric treatment before and after self-harm: an observational study of 4,280 adolescents and young adults
Creators: name: Pitkänen, Joonas
name: Remes, Hanna
name: Aaltonen, Mikko
name: Martikainen, Pekka
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Cancer
subject: Plant Biology

description: Additional file 3.
A Hubble Space Telescope ACS Search for Brown Dwarf Binaries in the Pleiades Open Cluster
Creators: name: Bouy, H.
name: Moraux, E.
name: Bouvier, J.
name: Brandner, W.
name: Martin, E. L.
name: Allard, F.
name: Baraffe, I.
name: Fernandez, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a high-resolution imaging survey for brown dwarf binaries in the Pleiades open cluster. The observations were carried out with the Advance Camera for Surveys onboard the Hubble Space Telescope. Our sample consists of 15 bona-fide brown dwarfs. We confirm 2 binaries and detect their orbital motion, but we did not resolve any new binary candidates in the separation range between 5.4AU and 1700AU and masses in the range 0.035--0.065~Msun. Together with the results of our previous study (Martin et al., 2003), we can derive a visual binary frequency of 13.3$^{+13.7}_{-4.3}$\% for separations greater than 7~AU masses between 0.055--0.065~M$_{\sun}$ and mass ratios between 0.45--0.9$
description: 29 pages, 7 figures, 6 tables, accepted for publication in ApJ
Bose-Einstein condensates in an eightfold symmetric optical lattice
Creators: name: Niu, Zhen-Xia
name: Tai, Yonghang
name: Shi, Junsheng
name: Zhang, Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate the properties of Bose-Einstein condensates (BECs) in a two-dimensional quasi-periodic optical lattice (OL) with eightfold rotational symmetry by numerically solving the Gross-Pitaevskii equation. In a stationary external harmonic trapping potential, we first analyze the evolution of matter-wave interference pattern from periodic to quasi-periodic as the OL is changed continuously from four-fold periodic and eight-fold quasi-periodic. We also investigate the transport properties during this evolution for different interatomic interaction and lattice depth, and find that the BEC crosses over from ballistic diffusion to localization. Finally, we focus on the case of eightfold symmetric lattice and consider a global rotation imposed by the external trapping potential. The BEC shows vortex pattern with eightfold symmetry for slow rotation, becomes unstable for intermediate rotation, and exhibits annular solitons with approximate axial symmetry for fast rotation. These results can be readily demonstrated in experiments using the same configuration as in Phys. Rev. Lett. 122, 110404 (2019).
description: 6 pages, 6 figures
Limits on the neutrino magnetic moment from the MUNU experiment
Creators: name: Daraktchieva, Z.
name: Lamblin, J.
name: Link, O.
name: Amsler, C.
name: Avenier, M.
name: Broggini, C.
name: Busto, J.
name: Cerna, C.
name: Gervasio, G.
name: Jeanneret, P.
name: Jonkmans, G.
name: Koang, D. H.
name: Lebrun, D.
name: Ould-Saada, F.
name: Puglierin, G.
name: Stutz, A.
name: Tadsen, A.
name: Vuilleumier, J. -L.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The MUNU experiment was carried out at the Bugey nuclear power reactor. The aim was the study of electron antineutrino-electron elastic scattering at low energy. The recoil electrons were recorded in a gas time projection chamber, immersed in a tank filled with liquid scintillator serving as veto detector, suppressing in particular Compton electrons. The measured electron recoil spectrum is presented. Upper limits on the neutrino magnetic moment were derived and are discussed.
description: 9 pages, 7 figures Added reference: p.3, 1st col., TEXONO Added sentence: p.4, 1st col., electron attachement Modified sentence: p.5, 1st col., readout sequence Added sentence: p.5, 1st col., fast rise time cut
a1v1n1_26032020_04_art .pdf
Creators: name: Buendia, Enrique
Publisher: name: figshare
Year: 2020
Subjects: subject: 110601 Biomechanics
subject: FOS: Health sciences

description: Tests and measurements play a vital role in evaluating human performance in fitness, sports, and rehabilitation. Push-ups can provide strength and muscle memory to reach and break a fall. However, physical activity is a complex, multidimensional exposure that is difficult to measure. There are uncertainties about what dimension of physical activity is being evaluated and the degree to which that evaluation is valid. These uncertainties can lead to difficulties in planning and scheduling physical activity and sport, in the prescription of exercise or physical activity, among others. The aim of this study is to create average percentiles of push up of groups of people, in order to have more appropriate measurement alternatives for their characteristics.
Isometrus (Reddyanus) krasenskyi Kovarik 1998
Creators: name: Kovařík, František
Publisher: name: Zenodo
Year: 2003
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Isometrus
Isometrus krasenskyi

description: Isometrus (Reddyanus) krasenskyi Kovařík, 1998
 Isometrus (Reddyanus) krasenskyi Kovařík, 1998a: 35; Kovařík, 1998b: 111; Fet & Lowe, 2000: 152.
TYPE LOCALITY AND TYPE REPOSITORY. Java, Indonesia; FKCP.
 TYPE MATERIAL EXAMINED. Indonesia, Java, 1980, 1♀ (holotype), FKCP.
DISTRIBUTION. Indonesia (Java) (Kovařík, 1998a: 35).
description: Published as part of Kovařík, František, 2003, A review of the genus Isometrus Ehrenberg, 1828 (Scorpiones: Buthidae) with descriptions of four new species from Asia and Australia, pp. 1-19 in Euscorpius 10 (10) on page 9, DOI: 10.18590/euscorpius.2003.vol2003.iss10.1, http://zenodo.org/record/4672850
Synthetic photonic lattice for single-shot reconstruction of frequency combs
Creators: name: Titchener, James G.
name: Bell, Bryn
name: Wang, Kai
name: Solntsev, Alexander S.
name: Eggleton, Benjamin J.
name: Sukhorukov, Andrey A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We formulate theoretically and demonstrate experimentally an all-optical method for reconstruction of the amplitude, phase and coherence of frequency combs from a single-shot measurement of the spectral intensity. Our approach exploits synthetic frequency lattices with pump-induced spectral short- and long-range couplings between different signal components across a broad bandwidth of of hundreds GHz in a single nonlinear fiber. When combined with ultra-fast signal conversion techniques, this approach has the potential to provide real-time measurement of pulse-to-pulse variations in the spectral phase and coherence properties of exotic light sources.
description: 15 pages, 4 figures
Quasiparticle Energies and Excitonic Effects of Chromium Trichloride: from Two Dimensions to Bulk
Creators: name: Zhu, Linghan
name: Yang, Li
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Layered van der Waals (vdW) magnetic materials have attracted significant research interest to date. In this work, we employ the first-principles many-body perturbation theory to calculate excited-state properties of a prototype vdW magnet, chromium trichloride (CrCl3), covering monolayer, bilayer, and bulk structures. Unlike usual non-magnetic vdW semiconductors, in which many-electron interactions and excited states are sensitive to dimensionality, many-electron interactions are always enhanced and dominate quasiparticle energies and optical responses of both two-dimensional and bulk CrCl3. The electron-hole (e-h) binding energy can reach 3 eV in monolayer and remains as high as 2 eV in bulk. Because of the cancellation effect between self-energy corrections and e-h binding energies, the lowest-energy exciton (optical gap) is almost not affected by the change of dimensionality. Besides, for the excitons with similar e-h binding energies, their dipole oscillator strength can differ by a few orders of magnitude.Our analysis shows that such a big difference is from a unique interference effect between complex exciton wavefunctions and interband transitions. Finally, we find that the interlayer stacking sequence and magnetic coupling barely change quasiparticle band gaps and optical absorption spectra of CrCl3. Our calculated low-energy exciton peak positions agree with available measurements. These findings give insight into the understanding of many-electron interactions and the interplay between magnetic orders and optical excitations in vdW magnetic materials.
description: 22 pages, 8 figures, and 2 tables