cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Estimating Higher-Order Moments Using Symmetric Tensor Decomposition
Creators: name: Sherman, Samantha
name: Kolda, Tamara G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We consider the problem of decomposing higher-order moment tensors, i.e., the sum of symmetric outer products of data vectors. Such a decomposition can be used to estimate the means in a Gaussian mixture model and for other applications in machine learning. The $d$th-order empirical moment tensor of a set of $p$ observations of $n$ variables is a symmetric $d$-way tensor. Our goal is to find a low-rank tensor approximation comprising $r \ll p$ symmetric outer products. The challenge is that forming the empirical moment tensors costs $O(pn^d)$ operations and $O(n^d)$ storage, which may be prohibitively expensive; additionally, the algorithm to compute the low-rank approximation costs $O(n^d)$ per iteration. Our contribution is avoiding formation of the moment tensor, computing the low-rank tensor approximation of the moment tensor implicitly using $O(pnr)$ operations per iteration and no extra memory. This advance opens the door to more applications of higher-order moments since they can now be efficiently computed. We present numerical evidence of the computational savings and show an example of estimating the means for higher-order moments.
Q-factor and bandwidth of periodic antenna arrays over ground plane
Creators: name: Ludvig-Osipov, Andrei
name: Jonsson, B. L. G.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: In this paper, the Q-factor expression for periodic arrays over a ground plane is determined in terms of the electric current density within the array's unit cell. The expression accounts for the exact shape of the array element. The Q-factor formula includes integration only over a volume of an element in a unit cell, and can thus be efficiently implemented numerically. The examples show good agreement between the proposed Q-factor, the full-wave-calculated tuned fractional bandwidth, and the input-impedance-based formula by Yaghjian and Best (2005) for the array of tilted dipoles and the loops array.
description: 5 pages, 4 figures
Non-perturbative double scaling limits
Creators: name: Ferrari, Frank
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently, the author has proposed a generalization of the matrix and vector models approach to the theory of random surfaces and polymers. The idea is to replace the simple matrix or vector (path) integrals by gauge theory or non-linear sigma model (path) integrals. We explain how this solves one of the most fundamental limitation of the classic approach: we automatically obtain non-perturbative definitions in non-Borel summable cases. This is exemplified on the simplest possible examples involving O(N) symmetric non-linear sigma models with N-dimensional target spaces, for which we construct (multi)critical metrics. The non-perturbative definitions of the double scaled, manifestly positive, partition functions rely on remarkable identities involving (path) integrals.
description: 18 pages, one figure
Magnetic hysteresis behavior of granular manganite La$_{0.67}$Ca$_{0.33}$MnO$_3$ nanotubes
Creators: name: Dolz, M. I.
name: Rivero, S. D. Calderón
name: Pastoriza, H.
name: Romá, F.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A silicon micromechanical torsional oscillator is used to measure the hysteresis loops of two manganite La_0.67Ca_0.33MnO_3 nanotubes at different temperatures, applying an external field along its main axes. These structures are composed of nanograins with a ferromagnetic core surrounded by a dead layer. Micromagnetic calculations based on the stochastic Landau-Lifshitz-Gilbert equation, are performed to validate a simple model that allows for quantitatively describing the ferromagnetic behavior of the system. Further simulations are used to analyze the experimental data more in depth and to calculate the coercive field, the saturation and remanent magnetizations, and the effective magnetic volume for single nanotubes, over a wide temperature range.
description: 11 pages and 8 figures
Ardeicola stellaris
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Ardeicola
Ardeicola stellaris

description: Ardeicola stellaris (Denny, 1842)
 Report: [1] Touleshkov (1958).
 Host: Botaurus stellaris (L.) [1].
 Distribution in Bulgaria: Sofia, Sofia Region, Chelopechene, Kubratovo, Negovan (Sofia Region), Kazanlak [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 21, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Branes from Matrix Theory in PP-Wave Background
Creators: name: Hyun, Seungjoon
name: Shin, Hyeonjoon
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the recently proposed action for Matrix theory describing the DLCQ M theory in the maximally supersymmetric pp-wave background, we obtain the supersymmetry algebra of supercharge density. Using supersymmetry transformation rules for fermions, we identify BPS states with the central charges in the supersymmetry algebra, which can be activated only in the large N limit. They preserve some fraction of supersymmetries and correspond to rotating transverse membranes and longitudinal five branes.
description: 12 pages, latex, no figures, v2:references added, version to appear in PLB
MOESM2 of Bridging Indigenous and science-based knowledge in coastal and marine research, monitoring, and management in Canada
Creators: name: Alexander, Steven
name: Provencher, Jennifer
name: Henri, Dominique
name: Taylor, Jessica
name: Lloren, Jed
name: Lushani Nanayakkara
name: Johnson, Jay
name: Cooke, Steven
Publisher: name: figshare
Year: 2019
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 2. Literature searches.
The Controversial Role of Autophagy in Tumor Development: A Systematic Review
Creators: name: Bridilla Luiza Colhado Rodrigues
name: Lallo, Maria Anete
name: Perez, Elizabeth Cristina
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: Science Policy
subject: Plant Biology

description: Autophagy is a natural regulatory mechanism of the cell that eliminates unnecessary and dysfunctional cellular components to maintain homeostasis. Several authors have demonstrated that this mechanism can be induced by pathological conditions as cancer. However, their role in tumor development is still a controversial issue in cancer research. Here, we discussed the most relevant findings concerning autophagy in tumor development. In this critical review performed with studies published between 2002 and 2018, we found that the main pathway involved in the autophagy process is the PI3K/AKT/mTOR intracellular signaling pathway. Regarding their role in cancer development, breast cancer is the main study target, followed by lung, prostate and colon cancer. In these issues, 46% of the works consulted suggesting that autophagy inhibits tumor progression by favor a better antitumor response, 4% suggest that favors growth and tumor progression and, 50% of the authors failed to establish whether autophagy inhibits or favors tumor development. Herein, we concluded that depending on the study model, autophagy may favor or inhibits growth and cancer progression.
Additional file 1: of Risk factors analysis of attention deficit/hyperactivity disorder and allergic rhinitis in children: a cross-sectional study
Creators: name: Chen, Keyang
name: Zheng, Xiuxiu
name: Li, Ziyue
name: Xiang, Haijie
name: Chen, Bobei
name: Zhang, Hui
Publisher: name: figshare
Year: 2019
Subjects: Medicine
Biotechnology
Developmental Biology
Science Policy
Mental Health

description: Table S1. The IHS question-items, derived from DSM-IV category A symptoms of ADHD (DOCX 13 kb)
title: 01_1256
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Spin Stiffness of Stacked Triangular Antiferromagnets
Creators: name: Peles, A.
name: Southern, B. W.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the spin stiffness of stacked triangular antiferromagnets using both heat bath and broad histogram Monte Carlo methods. Our results are consistent with a continuous transition belonging to the chiral universality class first proposed by Kawamura.
description: 5 pages, 7 figures
Neutrino Emissions from Tidal Disruption Remnants
Creators: name: Hayasaki, Kimitake
name: Yamazaki, Ryo
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study high-energy neutrino emissions from tidal disruption remnants (TDRs) around supermassive black holes. The neutrinos are produced by the decay of charged pions originating in ultrarelativistic protons that are accelerated there. In the standard theory of tidal disruption events (TDEs), there are four distinct phases from debris circularization of stellar debris to super- and sub-Eddington to radiatively inefficient accretion flows (RIAFs). In addition, we consider the magnetically arrested disk (MAD) state in both the super-Eddington accretion and RIAF phases. We find that there are three promising cases to produce neutrino emissions: the super-Eddington accretion phase of the MAD state and the RIAF phases of both the non-MAD and MAD states. In the super-Eddington MAD state, the enhanced magnetic field makes it possible to accelerate the protons to $E_{p,max}~0.35 PeV (M_bh/10^{7.7}M_\odot)^{41/48}$ with the other given appropriate parameters. The neutrino energy is then $E_{ν,pk}~67 TeV (M_bh/10^{7.7}M_\odot)^{41/48}$ at the peak of the energy spectrum. For $M_bh\gtrsim10^{7.7} M_\odot$, the neutrino light curve is proportional to $t^{-65/24}$, while it follows the standard $t^{-5/3}$ decay rate for $M_bh<10^{7.7} M_\odot$. In both cases, the large luminosity and characteristic light curves diagnose the super-Eddington MAD state in TDEs. In the RIAF phase of the non-MAD state, we find $E_{p, max}~0.45 PeV (M_bh/10^7M_\odot)^{5/3}$ and $E_{ν,pk}~0.35 PeV (M_bh/10^7M_\odot)^{5/3}$, and its light curve is proportional to $t^{-10/3}$. This indicates that one can identify whether the existing RIAFs are the TDE origin or not. TDRs are potentially a population of hidden neutrino sources invisible in gamma rays.
description: 41 pages, 2 figures, published in ApJ, 886 114 (2019)
Stability conditions and the braid group
Creators: name: Thomas, R. P.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Algebraic Geometry (math.AG)
subject: Quantum Algebra (math.QA)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14J32; 18E30 ; 53D40; 20F36

description: We find stability conditions ([Do], [Br]) on some derived categories of differential graded modules over a graded algebra studied in [RZ], [KS]. This category arises in both derived Fukaya categories and derived categories of coherent sheaves. This gives the first examples of stability conditions on the A-model side of mirror symmetry, where the triangulated category is not naturally the derived category of an abelian category. The existence of stability conditions, however, gives many such abelian categories, as predicted by mirror symmetry. In our examples in 2 dimensions we completely describe a connected component of the space of stability conditions as the universal cover of the configuration space of $(k+1)$ distinct points with centre of mass zero in $\C$, with deck transformations the braid group action of [KS], [ST]. This gives a geometric origin for these braid group actions and their faithfulness, and axiomatises the proposal for stability of Lagrangians in [Th] and the example proved by mean curvature flow in [TY].
description: 21 pages, 4 figures. Much delayed published version; an unsurprising number of errors have been corrected
Mass Agnostic Jet Taggers
Creators: name: Bradshaw, Layne
name: Mishra, Rashmish K.
name: Mitridate, Andrea
name: Ostdiek, Bryan
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Searching for new physics in large data sets needs a balance between two competing effects---signal identification vs background distortion. In this work, we perform a systematic study of both single variable and multivariate jet tagging methods that aim for this balance. The methods preserve the shape of the background distribution by either augmenting the training procedure or the data itself. Multiple quantitative metrics to compare the methods are considered, for tagging 2-, 3-, or 4-prong jets from the QCD background. This is the first study to show that the data augmentation techniques of Planing and PCA based scaling deliver similar performance as the augmented training techniques of Adversarial NN and uBoost, but are both easier to implement and computationally cheaper.
description: 25 pages, 15 figures, plus appendices. Prepared for submission to SciPost Physics
Measuring transversity with T-odd single particle production
Creators: name: Bacchetta, A.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The transversity distribution can be measured at leading-twist in single-particle inclusive DIS, where it appears in connection with chiral-odd fragmentation functions. Among these functions, we focus on the time-reversal odd ones. They occur in fragmentation to unpolarized hadrons or polarized spin-one hadrons. Using a simple model, we show how these functions can be non-vanishing and we discuss the asymmetries where they can be measured together with the transversity distribution.
description: 4 pages, 2 figures, to appear in Proceedings of 9th International Workshop on Deep Inelastic Scattering and QCD (DIS 2001), Bologna, Italy, 27 Apr-1 May 2001
On the Strong Coupling Dynamics of heterotic string theory on C^3/Z_3
Creators: name: Ganor, O. J.
name: Sonnenschein, J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the strong coupling dynamics of the heterotic E_8 x E_8 string theory on the orbifolds T^6/Z_3 and C^3/Z_3 using the duality with the Horava-Witten M-theory picture. This leads us to a conjecture about the low energy description of the five dimensional E_0-theory (the CFT that describes the the singularity region of M-theory on C^3/Z_3) compactified on S^1/Z_2.
description: 23 pages
Additional file 1 of PAS domain containing regulator SLCG_7083 involved in morphological development and glucose utilization in Streptomyces lincolnensis
Creators: name: Lin, Chun-Yan
name: Ru, Yixian
name: Jin, Yanchao
name: Lin, Qi
name: Zhao, Guang-Rong
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Supplementary Material 1
Brueelia apiastri
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Brueelia
Brueelia apiastri

description: Brueelia apiastri (Denny, 1842)
 Reports: [1] Balát (1958); [2] Touleshkov (1963); [3] Touleshkov (1964a); [4] Touleshkov (1974).
 Host: Merops apiaster L. [1, 2, 3, 4].
 Distribution in Bulgaria: Sliven [1]; Sofia, Dragalevci, Suhindol (Veliko Tarnovo Region), Sandanski [2]; Stara Zagora, Harmanli, Ivanovo (Haskovo Region) [3]; Godech [4].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 21, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Disorder-induced phase transition in Dirac systems beyond the linear approximation
Creators: name: Krishtopenko, Sergey S.
name: Antezza, Mauro
name: Teppe, Frédéric
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By using the self-consistent Born approximation, we investigate disorder effect induced by the short-range impurities on the band-gap in two-dimensional Dirac systems with the higher order terms in momentum. Starting from the Bernevig-Hughes-Zhang (BHZ) model, we calculate the density-of-states as a function of the disorder strength. We show that due to quadratic corrections to the Dirac Hamiltonian, the band-gap is always affected by the disorder even if the system is gapless in the clean limit. Finally, we explore the disorder effects by using an advanced effective Hamiltonian describing the side maxima of the valence subband in HgTe~quantum wells. We show that the band-gap and disorder-induced topological phase transition in the real structures may differ significantly from those predicted within the BHZ model.
description: 6 pages, 5 fugures and supplemental materials
ECONOMIC AND AGRONOMIC ANALYSIS OF CONVENTIONAL AND ORGANIC CONCEPT OF CUCUMBER GROWING
Creators: name: Nenad, Pavlović
name: Milan, Ugrinović
name: Boško, Vojnović
name: Jovan, Rudež
name: Nenad, Pavlović
name: Milan, Ugrinović
name: Boško, Vojnović
name: Jovan, Rudež
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: cucumber
subject: profit
subject: business rate of profitability
subject: greenhouse
subject: organic production

description: Contemporary agro-technology enables high and stabile yield of slicing cucumber throughout the whole year. This study deals with total costs of production, yield per surface unit and the main parameters of profitability of producing slicing cucumber in the greenhouses and in the open field in conventional and organic farming system. Growing cucumbers in the greenhouses and in accordance with the principles of organic farming are the main conditions for higher prices in the market. The highest total costs (820.00 EUR/are) but also the highest gain (225.00 EUR/are) was realized in producing slicing cucumber both in the greenhouse in the organic farming system. Financial losses were recorded when growing cucumbers in the open field despite lower costs, both in organic and conventional system of growing: 29.00 EUR/are, i.e. -15.00 EUR/are, respectively. The business rate of profitability and the coefficient of cost-effectiveness were higher in growing cucumber in greenhouses in both concepts of production.
description: Original scientific paper
String backgrounds and LCFT
Creators: name: Sfetsos, Konstadinos
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe a large class of exact string backgrounds with a null Killing vector arising, via a limiting à la Penrose procedure, from string backgrounds corresponding to coset conformal field theories for compact groups G_N/H_N times a free time-like boson U(1)_{-N}. In this way a class of novel logarithmic conformal field theories (LCFT) emerges, that includes the one constructed recently as an N\to \infty limit of the SU(2)_N/U(1) X U(1)_{-N} theory. We explicitly give the exact operator algebra for the basic chiral fields as well as their representation in terms of free bosons, even though these are not known in general at finite N. We also compute four-point functions of various operators in the theory. For the cases of the four- and five-dimensional models, corresponding to a limit of the theory SO(D+1)_N/SO(D) X U(1)_{-N} for D=3 and 4, we also present the explicit expressions for the background fields.
description: 13 pages, Latex. v2: some refs. added, version to appear in PLB
-Camels-Tags-Zayadia-Tribe--2019--وسم الابل عند قبيلة الزيادية.pdf
Creators: name: Eid Brima
Publisher: name: figshare
Year: 2021
Subjects: subject: 130302 Comparative and Cross-Cultural Education
subject: FOS: Educational sciences

description: Camels tags for Zayadia Tribe in Sudan. North Darfur. The tags are classified based on branches within the tribe.وسم (وسوم) الابل عند قبيلة الزيادية
New Tools for Fermion Masses from Extra Dimensions
Creators: name: Kaplan, David E.
name: Tait, Tim M. P.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present models in which the observed fermion masses and mixings are generated by dynamically localizing the three generations of matter in a flat compact extra dimension. We first construct models assuming the hierarchy problem is addressed by the existence of large extra dimensions, i.e. the fundamental scale is not far above a TeV and supersymmetry is not imposed. These models are compactified, chiral, and don't require fine-tuning to generate the top mass. Limits on the compactification scale based on flavor-changing neutral currents are relaxed compared to those on existing models. We then supersymmetrize some of these models. Using N=1 superspace language in extra dimensions, we find space-dependent flat directions which can be used to localize fields. Finally, we discuss methods of breaking supersymmetry and the impact of these models on the superpartner spectrum.
description: Latex using JHEP style; 28 pages
T-Duality, and the K-Theoretic Partition Function of TypeIIA Superstring Theory
Creators: name: Moore, Gregory
name: Saulina, Natalia
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the partition function of type IIA string theory on 10-manifolds of the form T^2 x X where X is 8-dimensional, compact, and spin. We pay particular attention to the effects of the topological phases in the supergravity action implied by the K-theoretic formulation of RR fields, and we use these to check the T-duality invariance of the partition function. We find that the partition function is only T-duality invariant when we take into account the T-duality anomalies in the RR sector, the fermionic path integral (including 4-fermi interaction terms), and 1-loop corrections including worldsheet instantons. We comment on applications of our computation to speculations about the role of the Romans mass in M-theory. We also discuss some issues which arise when one attempts to extend these considerations to checking the full U-duality invariance of the theory.
description: 73 pages, harvmac, b-mode
Brueelia argula
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Brueelia
Brueelia argula

description: Brueelia argula (Burmeister, 1838)
 Report: [1] Touleshkov (1960b).
 Host: Corvus corax L. [1].
 Distribution in Bulgaria: Sofia, Bosnek (Pernik Region), Bankya (Sofia Region), Haskovo [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 21, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
Estimating trajectories of meteors: an observational Monte Carlo approach -- I. Theory
Creators: name: Vida, Denis
name: Gural, Peter S.
name: Brown, Peter G.
name: Campbell-Brown, Margaret
name: Wiegert, Paul
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: It has recently been shown by Egal et al. (2017) that some types of existing meteor in-atmosphere trajectory estimation methods may be less accurate than others, particularly when applied to high precision optical measurements. The comparative performance of trajectory solution methods has previously only been examined for a small number of cases. Besides the radiant, orbital accuracy depends on the estimation of pre-atmosphere velocities, which have both random and systematic biases. Thus it is critical to understand the uncertainty in velocity measurement inherent to each trajectory estimation method. In this first of a series of two papers, we introduce a novel meteor trajectory estimation method which uses the observed dynamics of meteors across stations as a global optimization function and which does not require either a theoretical or empirical flight model to solve for velocity. We also develop a 3D observational meteor trajectory simulator that uses a meteor ablation model to replicate the dynamics of meteoroid flight, as a means to validate different trajectory solvers. We both test this new method and compare it to other methods, using synthetic meteors from three major showers spanning a wide range of velocities and geometries (Draconids, Geminids, Perseids). We determine which meteor trajectory solving algorithm performs better for: all-sky, moderate field of view, and high-precision narrow-field optical meteor detection systems. The results are presented in the second paper in this series. Finally, we give detailed equations for estimating meteor trajectories and analytically computing meteoroid orbits, and provide the Python code of the methodology as open source software.
description: Accepted for publication in MNRAS
PRACTICAL RESEARCH RESULTS OF A SUCCESSFUL COMPANY’S APPEARANCE AT THE FAIR
Creators: name: Prdić, Nedeljko
name: Kuzman, Boris
name: Barjaktarović, Miljana
name: Prdić, Nedeljko
name: Kuzman, Boris
name: Barjaktarović, Miljana
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business
subject: trade fairs
subject: wine
subject: costs
subject: effects of appearance

description: Trade fairs represent a hot subject in the contemporary theory, as well as in the contemporary practice of modern successful international and local enterprises, organisers and owners of exhibition space. The domestic literature provides certain sources and papers which discuss the topic in theory, but there is an evident lack of strategic approach towards trade fairs as the instrument of sales improvement, as well as the obvious lack of practical approach of enterprises at trade fairs, and the lack of real measurement of the results obtained. This paper proves that the representation on a trade fair had positive effect on the sales results, as well as on the creation of interest and the increase of awareness of the existence of a company and its products. The analysis proves that under certain conditions the gain rate on the investment is calculable and quantifiable, in the case of trade fair representation.
description: Original scientific paper
Szego limit theorem for operators with discontinuous symbols and applications to entanglement entropy
Creators: name: Gioev, Dimitri
Publisher: name: arXiv
Year: 2002
Subjects: subject: Functional Analysis (math.FA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: Primary: 81P15, 58J37, 47B35. Secondary: 35S05, 82B10

description: The main result in this paper is a one term Szego type asymptotic formula with a sharp remainder estimate for a class of integral operators of the pseudodifferential type with symbols which are allowed to be non-smooth or discontinuous in both position and momentum. The simplest example of such symbol is the product of the characteristic functions of two compact sets, one in real space and the other in momentum space. The results of this paper are used in a study of the violation of the area entropy law for free fermions in [18]. This work also provides evidence towards a conjecture due to Harold Widom.
description: 18 pages, major revision, to appear in Int. Math. Res. Not
Brueelia biguttata
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Brueelia
Brueelia biguttata

description: Brueelia biguttata (Kellogg & Paine, 1914)
 Report: [1] Touleshkov (1960b).
 Host: Pyrrhocorax graculus (L.) [1].
 Distribution in Bulgaria: Stara Planina Mountain, Asenovgrad, Rila Mountain – Sitnyakovo [1].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 21, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
PRODUCTION AND ECONOMIC SPECIFICITIES IN GROWING OF DIFFERENT GARLIC VARIETIES
Creators: name: Ibrahim, Totić
name: Stevan, Čanak
name: Ibrahim, Totić
name: Stevan, Čanak
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: garlic
subject: production technology
subject: contribution margin

description: Importance of garlic is enormous for both human health and cookery. Garlic is a crop whose production does not endanger the agro-system and the eco-system, which is of special significance for organic food production. Considering that growing garlic is based on the application of agro-ecological and agro-economic principles, this paper describes the soil preparation process for planting, planting technology, application of agro-technological measures. It also gives an account of the basic characteristics of the planting material, its extraction and storage. The subject of research of this paper is to determine yield of different garlic types on two different locations in Serbia. It also aims to determine costs and calculations based on variable costs, as well as to compare economic results of production of different garlic types on family-own small-scale farms.
description: Original scientific paper
Dark-State Optical Potential Barriers with Nanoscale Spacing
Creators: name: Ge, Wenchao
name: Zubairy, M. Suhail
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Optical potentials have been a versatile tool for the study of atomic motions and many-body interactions in cold atoms. Recently, optical subwavelength single barriers were proposed to enhance the atomic interaction energy scale, which is based on non-adiabatic corrections to Born-Oppenheimer potentials. Here we present a study for creating a new landscape of non-adiabatic potentials--multiple barriers with subwavelength spacing at tens of nanometers. To realize these potentials, spatially rapid-varying dark states of atomic $Λ$-configurations are formed by controlling the spatial intensities of the driving lasers. As an application, we show that bound states of very long lifetimes on the order of seconds can be realized. Imperfections and experimental realizations of the multiple barriers are also discussed.
description: 6 pages, 5 figures, manuscript updated
IMPORTANCE OF PUBLIC WAREHOUSE SYSTEM FOR FINANCING AGRIBUSINESS SECTOR
Creators: name: Zakić, Vladimir
name: Kovačević, Vlado
name: Ivkov, Ivana
name: Mirović, Vera
name: Zakić, Vladimir
name: Kovačević, Vlado
name: Ivkov, Ivana
name: Mirović, Vera
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Marketing
subject: FOS: Economics and business
subject: Public Economics
subject: commodity exchange
subject: public warehouse
subject: warehouse receipt
subject: short term loans

description: The aim of this study was to determine the economic viability of the use of warehouse receipts for the storage of wheat and corn, based on the analysis of trends in product prices, storage costs in public warehouses and interest rate of loans against warehouse receipts. Agricultural producers are urged to sell grain at the harvest time when the price of agricultural products is usually lowest, mostly because of their needs for financial sources. Instead of selling products, farmers can store them in the public warehouses and use shorttime financing by lending against warehouse receipt with usually lowest interest rate. In following months, farmers can sell products at higher price and repay short-term loan. This study showed that strategy of using public warehouses and postponing the sale of grains after harvest is profitable strategy for agricultural producers.
description: Original scientific paper
In silico and in vitro antioxidant activity profiles of urea and thiourea derivatives of 5-hydroxytryptophan
Creators: name: Hasti Sudhamani
name: Gandavaram Syam Prasad
name: Chintha Venkataramaiah
name: Chamarthi Naga Raju
name: Wudayagiri Rajendra
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: 60506 Virology
subject: FOS: Biological sciences

description: A series of new urea and thiourea derivatives of 5-hydroxy tryptophan 3a-l was designed and synthesized from 5-hydroxy tryptophan (1) by treating various isocyanates 2a-g and isothiocyanates 2h-l in the presence of triethylamine (TEA) as a base. The antioxidant activities of the newly synthesized compounds were evaluated by using different in vitro assays such as 1, 1-diphenyl-2-picrylhydrazyl (DPPH), hydrogen peroxide (H2O2) and superoxide. The results obtained from the in vitro studies revealed that the compounds 3a, 3g, 3h, and 3l exhibited the significant high content of antioxidant activity. Besides, molecular docking studies indicated that, all the compounds 3a-l have formed higher binding energies with 3MNG protein than the reference compound 1. Among all the synthesized compounds, 3a, 3l, 3g, 3b, 3c and 3h have exhibited the highest dock scores than the rest of the compounds including the reference compound. Hence, it is concluded that the title compounds will open new vistas for the discovery of strong antioxidants and will stand as remarkable antioxidant moieties in future.
Additional file 1: of Transcriptome annotation and characterization of novel toxins in six scorpion species
Creators: name: Grashof, Dwin
name: Kerkkamp, Harald
name: Afonso, Sandra
name: Archer, John
name: Harris, D.
name: Richardson, Michael
name: Vonk, Freek
name: Meijden, Arie
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Plant Biology
subject: Computational Biology

description: Table S1. Number of “highly expressed unidentified” (“unidentified” transcripts with a percentage coverage of 0.5% compared with the total transcriptome coverage) with and without signal peptides. Table S2. Number of transcripts in each of the “high expressed unidentified” clusters between each of the steps described in the Methods section. The last column shows the first letter of the species names that are represented by transcripts in that cluster (A = A. mauretanicus, B = B. gigas, G = G. grandidieri, H = H. gentili, P = P. kraepelini, N = N. hierichonticus, All = transcripts of all six species are found in that cluster). Table S3. Origin of the samples with the coordinates of capture where available. (DOCX 29 kb)
Introducing strong correlation effects into graphene by gadolinium intercalation
Creators: name: Link, S.
name: Forti, S.
name: Stöhr, A.
name: Küster, K.
name: Rösner, M.
name: Hirschmeier, D.
name: Chen, C.
name: Avila, J.
name: Asensio, M. C.
name: Zakharov, A. A.
name: Wehling, T. O.
name: Lichtenstein, A. I.
name: Katsnelson, M. I.
name: Starke, U.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Exotic ordered ground states driven by electronic correlations are expected to be induced in monolayer graphene when doped to the Van Hove singularity. Such doping levels are reached by intercalating Gd in graphene on SiC(0001), resulting in a strong homogeneity and stability. The electronic spectrum now exhibits severe renormalizations. Flat bands develop which is driven by electronic correlations according to our theoretical studies. Due to strong electron-phonon coupling in this regime, polaron replica bands develop. Thus, interesting ordered ground states should be made accessible.
Fixation of theoretical ambiguities in the improved fits to $xF_3$ CCFR data at the next-to-next-to-leading order and beyond
Creators: name: Kataev, A. L.
name: Parente, G.
name: Sidorov, A. V.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the results for the NNLO QCD corrections to anomalous dimensions of odd $xF_3$ Mellin moments and N$^3$LO corrections to their coefficient functions we improve our previous analysis of the CCFR'97 data for $xF_3$. The possibility of extracting from the fits of $1/Q^2$-corrections is analysed using three independent models,including infrared renormalon one. Theoretical quetion of applicability of the renormalon-type inspired large-$β_0$ approximation for estimating corrections to the coefficient functions of odd $xF_3$ and even non-singlet $F_2$ moments are considered. The comparison with [1/1] Padé estimates is given. The obtained NLO and NNLO values of $α_s(M_Z)$ are supporting the results of our less definite previous analysis and are in agreement with the world average value $α_s(M_Z)\approx 0.118$. We also present first N$^3$LO extraction of $α_s(M_Z)$. The interplay between higher-order perturbative QCD corrections and $1/Q^2$-terms is demonstrated. The results of our studies are compared with those obtained recently using the NNLO model of the kernel of DGLAP equation and with the results of the NNLO fits to CCFR'97 $xF_3$ data, performed by the Bernstein polynomial technique.
description: The errors in the coefficients $C_{F_3}^{(3)}(n)$ of ($\alpha_s/4\pi)^3 QCD corrections to the Mellin moments of xF_3 structure function were detected. The application of the corrected results in the fits resulted in decrease of N$^3$LO values of $\Lambda_{\bar{MS}}^{(4)}$ in Tables 6,11,12 by 3 MeV only (details are in the enclosed Erratum (in press))
Emergence of strongly correlated electronic states driven by the Andreev bound state in d-wave superconductors
Creators: name: Matsubara, Shun
name: Kontani, Hiroshi
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: As the surface Andreev bound state (ABS) forms at the open ($1,1$) edge of a $d_{x^2-y^2}$-wave superconductor, the local density of states (LDOS) increases. Therefore, a strong electron correlation and drastic phenomena may occur. However, a theoretical study on the effects of the ABS on the electron correlation has not been performed yet. To understand these effects, we study large cluster Hubbard model with an open ($1,1$) edge in the presence of a bulk $d$-wave gap. We calculate the site-dependent spin susceptibility by performing random-phase-approximation (RPA) and modified fluctuation-exchange (FLEX) approximation in the real space. We find that near the ($1,1$) edge, drastic ferromagnetic (FM) fluctuations occur owing to the ABS. In addition, as the temperature decreases, the system rapidly approaches a magnetic-order phase slightly below the transition temperature of the bulk $d$-wave superconductivity (SC). In this case, the FM fluctuations are expected to induce interesting phenomena such as edge-induced triplet SC and quantum critical phenomena.
description: 9 pages, 15 figures
Reduction of the Uncertainty in the Atmospheric Neutrino Flux Prediction Below 1 GeV Using Accurately Measured Atmospheric Muon Flux
Creators: name: Honda, M.
name: Athar, M. Sajjad
name: Kajita, T.
name: Kasahara, K.
name: Midorikawa, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We examine the uncertainty of the calculation of the atmospheric neutrino flux and present a way to reduce it using accurately measured atmospheric muon flux. Considering the difference of the hadronic interaction model and the real one as a variation of hadronic interaction, we find a quantitative estimation method for the error of the atmospheric neutrino flux calculation from the residual of the reconstruction of the atmospheric muon flux observed in a precision experiment, by the study of atmospheric neutrino and muon fluxes response to the variation of hadronic interaction. However, the efficiencty of this method is largely dependent on the observation site of the atmospheric muon flux, as the relation of the error of the atmospheric neutrino flux calculation and the residual of the reconstruction of the atmospheric muon flux is also largely dependent on the muon observation site, especially for the low energy neutrinos. We calculate several observation sites, near Kamioka at sea level, same but 2770m a.s.l.., Hanle India (4500m a.s.l.), and at Balloon altitude ($\sim$ 32km). Then we estimate how stringently can the atmospheric muon reduce the error in the calculation of the atmospheric neutrino flux. We also discuss on the source of error which is difficult to reduce by only the observation of atmospheric muon.
description: 14 pages, 30 fugures
Quark-hadron duality and the nuclear EMC effect
Creators: name: Melnitchouk, W.
name: Tsushima, K.
name: Thomas, A. W.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Recent data on polarized proton knockout reactions off He-4 nuclei suggest a small but nonzero modification of proton electromagnetic form factors in medium. Using model independent relations derived on the basis of quark-hadron duality, we relate the medium modification of the form factors to the modification at large x of the deep-inelastic structure function of a bound proton. This places strong constraints on models of the nuclear EMC effect which assume a large deformation of the intrinsic structure of the nucleon in medium.
description: 16 pages, 3 figures; typos corrected, references added, fig. 2 labels corrected; version to appear in Eur. Phys. J. A
Brueelia biocellata
Creators: name: Ilieva, Mihaela
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Psocodea
Philopteridae
Brueelia
Brueelia biocellata

description: Brueelia biocellata (Piaget, 1880)
 Reports: [1] Touleshkov (1970); [2] Touleshkov (1974).
 Host: Pica pica (L.) [1, 2].
 Distribution in Bulgaria: Stara Planina Mountain [1]; Belogradchik, Ticha (Sliven Region) [2].
description: Published as part of Ilieva, Mihaela, 2009, Checklist of the chewing lice (Insecta: Phthiraptera) from wild birds in Bulgaria, pp. 1-66 in Zootaxa 2138 (1) on page 21, DOI: 10.11646/zootaxa.2138.1.1, http://zenodo.org/record/5314302
pp-wave limits and orientifolds
Creators: name: Naculich, Stephen G.
name: Schnitzer, Howard J.
name: Wyllard, Niclas
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the pp-wave limits of various elliptic models with orientifold planes and D7-branes, as well as the pp-wave limit of an orientifold of adS_5 x T^{11}. Many of the limits contain both open and closed strings. We also present pp-wave limits of theories which give rise to a compact null direction and contain open strings. Maps between the string theory states and gauge theory operators are proposed.
description: 33 pages, no figures, LaTeX. v2: reference fixed
THE IMPORTANCE OF ECONOMIC STRUCTURE EVOLUTION IN ACHIEVING PERFORMANCE - FROM AGRARIAN ECONOMY TO COMPETITIVENESS IN ROMANIAN ECONOMY
Creators: name: Jean Vasile, Andrei
name: Ungureanu, Adrian
name: Jean Vasile, Andrei
name: Ungureanu, Adrian
Publisher: name: Unknown
Year: 2014
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: agriculture
subject: competitiveness
subject: GDP
subject: economic structure
subject: inland economy

description: In terms of more increased integration and globalization of markets, risk diversification and exposure to external economic factors disturbing the structure of the national economy acquires a major role in alleviating and absorbing adverse effects on national economies are exposed. Starting from the reality that reducing disparities and achieving convergence criteria cannot be achieved except through the perspective of economic structures, the main objective of this research is the analysis of the importance of the economic structure in achieving functional requirements and competitive market economy, in the process of transition agrarian economy to a market economy in Romania, highlighting the main changes and effects that occurred in the past twenty-three years in the national economy, with a closer approach on agricultural structures.
description: Review Article