cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Boosting Simple Learners
Creators: name: Alon, Noga
name: Gonen, Alon
name: Hazan, Elad
name: Moran, Shay
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Boosting is a celebrated machine learning approach which is based on the idea of combining weak and moderately inaccurate hypotheses to a strong and accurate one. We study boosting under the assumption that the weak hypotheses belong to a class of bounded capacity. This assumption is inspired by the common convention that weak hypotheses are "rules-of-thumbs" from an "easy-to-learn class". (Schapire and Freund~'12, Shalev-Shwartz and Ben-David '14.) Formally, we assume the class of weak hypotheses has a bounded VC dimension. We focus on two main questions: (i) Oracle Complexity: How many weak hypotheses are needed to produce an accurate hypothesis? We design a novel boosting algorithm and demonstrate that it circumvents a classical lower bound by Freund and Schapire ('95, '12). Whereas the lower bound shows that $Ω({1}/{γ^2})$ weak hypotheses with $γ$-margin are sometimes necessary, our new method requires only $\tilde{O}({1}/γ)$ weak hypothesis, provided that they belong to a class of bounded VC dimension. Unlike previous boosting algorithms which aggregate the weak hypotheses by majority votes, the new boosting algorithm uses more complex ("deeper") aggregation rules. We complement this result by showing that complex aggregation rules are in fact necessary to circumvent the aforementioned lower bound. (ii) Expressivity: Which tasks can be learned by boosting weak hypotheses from a bounded VC class? Can complex concepts that are "far away" from the class be learned? Towards answering the first question we {introduce combinatorial-geometric parameters which capture expressivity in boosting.} As a corollary we provide an affirmative answer to the second question for well-studied classes, including half-spaces and decision stumps. Along the way, we establish and exploit connections with Discrepancy Theory.
description: Journal version
The Neutral Atomic Phases of the ISM in the Galaxy
Creators: name: Wolfire, M. G.
name: McKee, C. F.
name: Hollenbach, D.
name: Tielens, A. G. G. M.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Much of the interstellar medium in disk galaxies is in the form of neutral atomic hydrogen, H I. This gas can be in thermal equilibrium at relatively low temperatures, T < 300 K (the cold neutral medium, or CNM) or at temperatures somewhat less than 10^4 K (the warm neutral medium, or WNM). These two phases can coexist over a narrow range of pressures, P_min < P < P_max. We determine P_min and P_max in the plane of the Galaxy as a function of Galactocentric radius R using recent determinations of the gas heating rate and the gas phase abundances of interstellar gas. We provide an analytic approximation for P_min as a function of metallicity, far-ultraviolet radiation field, and the ionization rate of atomic hydrogen. Over most of the disk of the Galaxy, the H I must be in two phases: the weight of the H I in the gravitational potential of the Galaxy is large enough to generate thermal pressures exceeding P_min, so that turbulent pressure fluctuations can produce cold gas that is thermally stable; and the mean density of the H I is too low for the gas to be all CNM. Our models predict the presence of CNM gas to R = 16-18 kpc, somewhat farther than previous estimates. We also examine the potential impact of turbulent heating on our results and provide expressions for the heating rate as a function of Galactic radius.
description: 78 pages plus 19 figures, Accepted for publication in ApJ (Abridged abstract)
ScamPy -- A sub-halo clustering & abundance matching based Python interface for painting galaxies on the dark matter halo/sub-halo hierarchy
Creators: name: Ronconi, Tommaso
name: Lapi, Andrea
name: Viel, Matteo
name: Sartori, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a computational framework for "painting" galaxies on top of the Dark Matter Halo/Sub-Halo hierarchy obtained from N-body simulations. The method we use is based on the sub-halo clustering and abundance matching (SCAM) scheme which requires observations of the 1- and 2-point statistics of the target (observed) population we want to reproduce. This method is particularly tailored for high redshift studies and thereby relies on the observed high-redshift galaxy luminosity functions and correlation properties. The core functionalities are written in c++ and exploit Object Oriented Programming, with a wide use of polymorphism, to achieve flexibility and high computational efficiency. In order to have an easily accessible interface, all the libraries are wrapped in python and provided with an extensive documentation. We validate our results and provide a simple and quantitative application to reionization, with an investigation of physical quantities related to the galaxy population, ionization fraction and bubble size distribution.
description: 19 pages, 15 figures, 5 tables, MNRAS accepted, source code documentation available at Read the Docs
Sembrando Alternativas; cosechando esperanzas. (Re)campesinización agroecológica en las lomas del Escambray, Provincia de Villa Clara, Cuba.
Creators: name: Val, Valentín
Publisher: name: figshare
Year: 2019
Subjects: subject: Anthropology
subject: FOS: Sociology
subject: 160104 Social and Cultural Anthropology
subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences
subject: 160804 Rural Sociology

description: En Cuba, la profunda crisis agroalimentaria sufrida a finales del siglo pasado desencadenó un replanteamiento del modelo agroalimentario y un retorno a la producción campesina. El objetivo general de este trabajo es indagar si el proceso de (re)campesinización y producción agroecológica adoptado como estrategia de supervivencia, hoy podría constituir una propuesta alternativa de producción y de vida al paradigma del desarrollo de la modernidad hegemónica. Esta reflexión crítica emerge en diálogo con un grupo de campesinos/as asociados/as a la Cooperativa de Créditos y Servicios “Ignacio Pérez Ríos” (CCS-IPR), participantes del Movimiento Agroecológico Campesino a Campesino (MACAC) de la Asociación Nacional de Agricultores Pequeños (ANAP) en las lomas del Escambray, Municipio de Manicaragua, provincia de Villa Clara. En este trabajo el concepto de (re)campesinización tiene múltiples acepciones; por el retorno efectivo de la fuerza laboral al trabajo agrícola, por la resignificación y la reconfiguración del modelo productivo, así como por las reflexión y (re-)articulación de las formas de ser, estar y habitar el mundo en ese retorno agroecológico. Así la agroecología adquiere un potencial revolucionario contrahegemónico y radical, con un replanteo profundo de las relaciones sociales y ambientales originadas desde la alteridad ontológica, desde espacios de enunciación y epistemes que (re-)emergen ante la crisis socio-ambiental como alternativas y críticas al paradigma de la modernidad hegemónica, del capital y el desarrollo. Una crítica radical válida tanto para el capitalismo depredador, como para el socialismo desarrollista del siglo XX. Este trabajo se presenta en un formato experimental con una estructura en dos columnas, intentando dar cuenta de un mismo fenómeno social, en un relato polifónico, desde diferentes puntos de vista, múltiples formas de lenguaje y una variada textura narrativa.
Nozioni di q-calcolo nell'ambito del quantum calculus
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2021
Subjects: q-calculus
quantum calculus
physics
q-derivata
q-esponenziale
Eulero

description: Il testo propone alcune nozioni di q-calcolo nell'ambito del quantum calculus. Si daranno definizioni, dimostrazioni ed esercizi, partendo dai q-numeri e q-binomi. Segue la q-derivazione. Poi vedremo le identità di Eulero ed i q-esponenziali.
Using Microsoft Word for preparing XML TEI-compliant digital editions
Creators: name: Lehečka, Boris
Publisher: name: Zenodo
Year: 2019
Subjects: digital edition
word processor
XML TEI
XSLT
C#

description: The paper will introduce the so-called electronic editions prepared in Microsoft Word text processor. This tool was originally developed in 2000 in order to generate so-called vertical format for a corpus manager and in 2008 it was modified in order to output XML TEI format for the Manuscriptorium project (National Library of the Czech Republic 2019). For capturing structural information (headings, indices etc.) and the semantics of the individual parts of the edition (notes, readings etc.) the editors use character and paragraph styles whose application is described in Černá and Lehečka (2016). The methodology also includes rules of transforming the individual styles into XML format according to the TEI P5 Guidelines (The Text Encoding Initiative Consortium 2019). An add-in for Microsoft Word was programmed to help editors to apply formatting and other necessary parts of the edition, e.g. page and line numbers. The author of the paper will focus on DOCX document conversion to XML TEI P5 format. The conversion which consists of approximately 60 sequentially applied XSLT transformations (World Wide Web Consortium 2009) is driven by a specialized application (programmed in C#). In order to keep as much of “the editor’s intent” as possible and reduce errors resulting from the transformation process (omitted or duplicated text) an electronic tool was created which extracts plain text (divided into basic text and annotations) from the input (DOCX) and target document (XML TEI P5). This can be carried out by a much smaller number of XSLT transformations (only 6 stylesheets). The output text is subsequently compared via text comparison tools, e.g. WinMerge (2013): differing text chunks point to problematic passages, where transformation to XML format fails. With these tools approximately 240 editions of Old- and Middle-Czech texts (from 1300–1800) was prepared during 10 years, currently attracting new potential users across institutions.
description: {"references": ["\u010cern\u00e1, A. and Lehe\u010dka, B. (2016). Metodika p\u0159\u00edpravy a zpracov\u00e1n\u00ed elektronick\u00fdch edic star\u0161\u00edch \u010desk\u00fdch text\u016f. (The Methodology of the preparation and processing of electronic editions of Old Czech texts.) [pdf] Praha: odd\u011blen\u00ed v\u00fdvoje jazyka \u00dastavu pro jazyk \u010desk\u00fd AV \u010cR, v. v. i. Available at: [Accessed 14 May 2019].", "National Library of the Czech Republic (2019). Manuscriptorium. Digital Library of Written Cultural Heritage. [online] Available at: [Accessed 14 May 2019].", "The Text Encoding Initiative Consortium (2019). TEI P5: Guidelines for Electronic Text Encoding and Interchange. [online] Available at [Accessed 14 May 2019].", "WinMerge 2.14.0 (2013). Available at [Accessed 14 May 2019].", "World Wide Web Consortium (W3C) (2009). XSL Transformation (XSLT) Version 2.0. Available at [Accessed 14 May 2018]."]}
The Complexity of Aggregates over Extractions by Regular Expressions
Creators: name: Doleschal, Johannes
name: Kimelfeld, Benny
name: Martens, Wim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Databases (cs.DB)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: Regular expressions with capture variables, also known as regex-formulas, extract relations of spans (intervals identified by their start and end indices) from text. In turn, the class of regular document spanners is the closure of the regex formulas under the Relational Algebra. We investigate the computational complexity of querying text by aggregate functions, such as sum, average, and quantile, on top of regular document spanners. To this end, we formally define aggregate functions over regular document spanners and analyze the computational complexity of exact and approximate computation. More precisely, we show that in a restricted case, all studied aggregate functions can be computed in polynomial time. In general, however, even though exact computation is intractable, some aggregates can still be approximated with fully polynomial-time randomized approximation schemes (FPRAS).
Conservation Laws and Cosmological Perturbations in Curved Universes
Creators: name: Uzan, Jean-Philippe
name: Deruelle, Nathalie
name: Turok, Neil
Publisher: name: arXiv
Year: 1998
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When working in synchronous gauges, pseudo-tensor conservation laws are often used to set the initial conditions for cosmological scalar perturbations, when those are generated by topological defects which suddenly appear in an up to then perfectly homogeneous and isotropic universe. However those conservation laws are restricted to spatially flat (K=0) Friedmann-Lema\^ıtre spacetimes. In this paper, we first show that in fact they implement a matching condition between the pre- and post- transition eras and, in doing so, we are able to generalize them and set the initial conditions for all $K$. Finally, in the long wavelength limit, we encode them into a vector conservation law having a well-defined geometrical meaning.
description: 15 pages, no figure, to appear in Phys. Rev. D
title: Trait Impulsivity, cigarette smoking and e-cigarette use
Creators: name: Kale, Dimitra
Publisher: name: Goldsmiths, University of London
Year: 2020

description: Although there is considerable evidence of an association between impulsivity and cigarette smoking, the magnitude of this association varies greatly across studies. On the other hand, research on the relationship between trait impulsivity and e-cigarette use is limited, and the available results also provide mixed findings. This thesis aimed to understand the relationship between trait impulsivity, cigarette smoking, and e-cigarette use. It also examines the role of e-cigarettes in smoking cessation as there is great controversy over the efficacy of e-cigarette use as a smoking cessation tool. A systematic review of the literature identified that cigarette smokers are more impulsive than non smokers, while emotion-based impulsivity is the impulsivity-related trait most associated with nicotine dependence. A study of 720 mainly European adults found different relationships between specific impulsivity-related traits and different classes of smoking status, suggesting that lack of perseverance differentiated e-cigarette users from cigarette smokers, and emotion-based impulsivity differentiated e-cigarette users from dual users (those who smoke a cigarette and use an e-cigarette). Additionally, it was found that trait impulsivity is related to e-cigarette use through positive e-cigarette attitudes. An Ecological Momentary Assessment study further showed that emotion-based impulsivity is a significant predictor of real-time cravings and real-time moods in cigarette smokers, e-cigarette users and dual users. The final study of the thesis assessed the role of e-cigarettes and trait impulsivity in smoking cessation. Findings suggest that e-cigarette use could potential be a useful tool in helping cigarette smokers to quit smoking. These findings help to further understand the role of trait impulsivity in cigarette smoking and e-cigarette use, and the relationship between cigarette smoking and e-cigarette use.
qpower2 - a fast and accurate algorithm for the computation of exoplanet transit light curves with the power-2 limb-darkening law
Creators: name: Maxted, P. F. L.
name: Gill, S.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The power-2 law, $I_λ(μ)=1- c (1 - μ^α)$, accurately represents the limb-darkening profile for cool stars. It has been implemented in a few transit models to-date using numerical integration but there is as-yet no implementation of the power-2 law in analytic form that is generally available. An algorithm to implement the power-2 law is derived using a combination of an approximation to the required integral and a Taylor expansion of the power-2 law. The accuracy of stellar and planetary radii derived by fitting transit light curves with this approximation is tested using light curves computed by numerical integration of limb-darkening profiles from 3D stellar model atmospheres. Our algorithm (qpower2) is accurate to about 100 ppm for broad-band optical light curves of systems with a star-planet radius ratio p = 0.1. The implementation requires less than 40 lines of python code so can run extremely fast on graphical processing units (GPUs; $\sim$ 1 million models per second for the analysis of 1000 data points). Least-squares fits to simulated light curves show that the star and planet radius are recovered to better than 1% for p < 0.2. The qpower2 algorithm can be used to efficiently and accurately analyse large numbers of high-precision transit light curves using Monte Carlo methods.
description: 8 pages. The qpower2 algorithm is available as a part of the pycheops package at https://pypi.python.org/pypi/pycheops
Simple validated method for simultaneous determination of deoxynivalenol, nivalenol, and their 3-β-D-glucosides in baby formula and Korean rice wine via HPLC-UV with immunoaffinity cleanup
Creators: name: Lee, Sang Yoo
name: Woo, So Young
name: Malachová, Alexandra
name: Michlmayr, Herbert
name: Sheen-Hee Kim
name: Kang, Gil Jin
name: Chun, Hyang Sook
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: A simple and reliable method for the simultaneous determination of major type B trichothecene mycotoxins, deoxynivalenol (DON) and nivalenol (NIV), along with their 3-β-d-glucosides (DON-3-glucoside (DON3G) and NIV-3-glucoside (NIV3G)) in baby formula and Korean rice wine was validated in the present study. The method was based on immunoaffinity cleanup followed by analysis using an HPLC-UV technique. The method was validated in-house for two matrices as follows: linearity (R2 > 0.99) was established in the range of 20–1000 μg kg–1; accuracy (expressed as recovery) ranged from 78.7 to 106.5% for all the analytes; good intermediate precision (relative standard deviation < 12%), and adequate detection and quantitation limits (< 4.4 and < 13.3 μg kg–1, respectively) were achieved. Furthermore, the estimated measurement expanded uncertainty was determined to be 4–24%. The validated method was successfully applied to the analysis of 31 baby formulas and Korean rice wines marketed in Korea.
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 3 (228)]
Creators: name: Marchixius
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1298
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Frater Marchixius, Praepositus der Kirche St. Cataldi in Cremona, belehnt Raynaldus de Briscia aus der Nachbarschaft von St. Crucis mit einem Stück Land, gelegen auf den Besitzungen [der Kirche?] sanctorum Simonis et Iudae.
Nomada pygmaea Cresson 1863
Creators: name: Zarrillo, Tracy A.
name: Stoner, Kimberly A.
name: Ascher, John S.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Apidae
Nomada
Nomada pygmaea

description: Nomada pygmaea Cresson, 1863: 299 (Connecticut holotype).
Holotype. Male USA: Connecticut, [ex coll. E. Norton] (ANSP).
Notes: This species is apparently one of the most numerous Nomada in the woodlands of the Northeastern United States, with records published for all counties in Massachusetts (Veit et al. 2022[“2021”]) and all but one county (Windham County) in Connecticut. Although there are many records it is still likely under-recorded in digitized record sets due to serious identification difficulties and inability to recognize this and other similar Nomada from community science images.
description: Published as part of Zarrillo, Tracy A., Stoner, Kimberly A. & Ascher, John S., 2025, Biodiversity of Bees (Hymenoptera: Apoidea: Anthophila) in Connecticut (USA), pp. 1-138 in Zootaxa 5586 (1) on page 96, DOI: 10.11646/zootaxa.5586.1.1, http://zenodo.org/record/14895883
Quasiparticle photoemission intensity in doped two-dimensional quantum antiferromagnets
Creators: name: Lema, F.
name: Aligia, A. A.
Publisher: name: arXiv
Year: 1997
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using the self-consistent Born approximation, and the corresponding wave function of the magnetic polaron, we calculate the quasiparticle weight corresponding to destruction of a real electron (in contrast to creation of a spinless holon), as a funtion of wave vector for one hole in a generalized $t-J$ model and the strong coupling limit of a generalized Hubbard model. The results are in excellent agreement with those obtained by exact diagonalization of a sufficiently large cluster. Only the Hubbard weigth compares very well with photoemission measurements in Sr_2CuO_2Cl_2.
description: 11 pages, latex, 3 figures
Causal Unfoldings and Disjunctive Causes
Creators: name: de Visme, Marc
name: Winskel, Glynn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences

description: In the simplest form of event structure, a prime event structure, an event is associated with a unique causal history, its prime cause. However, it is quite common for an event to have disjunctive causes in that it can be enabled by any one of multiple sets of causes. Sometimes the sets of causes may be mutually exclusive, inconsistent one with another, and sometimes not, in which case they coexist consistently and constitute parallel causes of the event. The established model of general event structures can model parallel causes. On occasion however such a model abstracts too far away from the precise causal histories of events to be directly useful. For example, sometimes one needs to associate probabilities with different, possibly coexisting, causal histories of a common event. Ideally, the causal histories of a general event structure would correspond to the configurations of its causal unfolding to a prime event structure; and the causal unfolding would arise as a right adjoint to the embedding of prime in general event structures. But there is no such adjunction. However, a slight extension of prime event structures remedies this defect and provides a causal unfolding as a universal construction. Prime event structures are extended with an equivalence relation in order to dissociate the two roles, that of an event and its enabling; in effect, prime causes are labelled by a disjunctive event, an equivalence class of its prime causes. With this enrichment a suitable causal unfolding appears as a pseudo right adjoint. The adjunction relies critically on the central and subtle notion of extremal causal realisation as an embodiment of causal history. Finally, we explore subcategories which support parallel causes as well the key operations needed in developing probabilistic distributed strategies with parallel causes.
description: arXiv admin note: text overlap with arXiv:1607.03747
Dynamics of competition between collectivity and noise in the stock market
Creators: name: Drozdz, S.
name: Gruemmer, F.
name: Ruf, F.
name: Speth, J.
Publisher: name: arXiv
Year: 1999
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: Detailed study of the financial empirical correlation matrix of the 30 companies comprised by DAX within the period of the last 11 years, using the time-window of 30 trading days, is presented. This allows to clearly identify a nontrivial time-dependence of the resulting correlations. In addition, as a rule, the draw downs are always accompanied by a sizable separation of one strong collective eigenstate of the correlation matrix which, at the same time, reduces the variance of the noise states. The opposite applies to draw ups. In this case the dynamics spreads more uniformly over the eigenstates which results in an increase of the total information entropy.
description: 10 pages, 4 figures, LaTeX2e + graphicx
A Near-Infrared Imaging Survey of Coalsack Globule 2
Creators: name: Racca, German
name: Gomez, Mercedes
name: Kenyon, Scott J.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe a near-infrared imaging survey of Globule 2 in the Coalsack. This Bok globule is the highest density region of this southern hemisphere molecular cloud and is the most likely location for young stars in this complex. The survey is complete for K < 14.0, H < 14.5, and J < 15.5, several magnitudes more sensitive than previous observations of this globule. From the large number of background stars, we derive an accurate near-infrared extinction law for the cloud. Our result, E_{J-H}/E_{H-K} = 2.08 \pm 0.03, is significantly steeper than results for other southern clouds. We use the J-H/H-K color-color diagram to identify two potential young stars with K < 14.0 in the region. We apply H-band star counts to derive the density profile of the Coalsack Globule 2 and use a polytropic model to describe the internal structure of this small cloud. For a gas temperature T \sim 15 K, this globule is moderately unstable.
description: 19 pages, manuscript format; 6 figures -- Accepted by AJ
Hyperelliptic curves in characteristic 2
Creators: name: Scholten, Jasper
name: Zhu, Hui June
Publisher: name: arXiv
Year: 2000
Subjects: subject: Algebraic Geometry (math.AG)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: In this paper we prove that there are no hyperelliptic supersingular curves over F_2bar of genus 2^n-1 for any integer n>1. Let g be a natural number, and h=floor(log_2(g+1)+1). Let X be a hyperelliptic curve over F_2bar of genus g>2 and 2-rank zero, given by an affine equation y^2-y=c_{2g+1} x^{2g+1} +...+ c_1 x. We prove that the first slope of the Newton polygon of X is bigger than or equal to 1/h. We also prove that the equality holds if (I) g<2^h-2, c_{2^h-1} is nonzero; or (II) g=2^h-2, c_{2^h-1} or c_{3(2^{h-1})-1} is nonzero. We prove that genus-4 hyperelliptic curve over F_2bar are precisely those with equations y^2 - y = x^9 + a x^5 + b x^3.
description: 10 pages
On the longitudinal momentum of the electron at the tunneling exit
Creators: name: Xu, Ruihua
name: Li, Tao
name: Wang, Xu
Publisher: name: arXiv
Year: 2018
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The longitudinal momentum of the electron at the tunneling exit is a useful quantity to make sense of the tunneling ionization process. It was usually assumed to be zero from a classical argument, but recent experiments show that it must be nonzero in order to explain the measured electron momentum distributions. In this article we show that the flow momentum of the probability fluid is a sensible quantum mechanical definition for tunneling-exit momentum, and it can be (and in general is) nonzero at the tunneling exit point where the kinetic energy is zero by definition. We show that this longitudinal momentum is nonzero even in the static or adiabatic limit, and this nonzero momentum is a purely quantum mechanical effect determined by the shape of the wave function in the vicinity of the tunneling exit point. Nonadiabaticity or finite wavelength may increase this momentum substantially, and the detailed value depends on both the atomic and the laser parameters.
An Impact Analysis Of The Dairy Herd Buyout Program On The U.S. Feeder Cattle Industry
Creators: name: Bedingar, Touba
name: Bobst, Barry W.
name: Bedingar, Touba
name: Bobst, Barry W.
Publisher: name: Unknown
Year: 1987
Subjects: Livestock Production/Industries

description: Dairy production decisions are considered to be determined outside the beef cattle industry. However, through its effects on nonfed cattle marketings, a dairy herd buyout program affects both feeder and slaughter cattle prices in the U.S. feeder cattle industry. An impact analysis of a year-long buyout program indicates relatively severe first quarter price effects. However, by the second quarter price flexibilities show lessened relative price impacts, even though prices continue to decline in absolute terms. Within two years, reduced beef cattle numbers lead to higher prices that would have occurred without the buyout program.
Ponencia justicia indigena (1).docx
Creators: name: Sánchez, Marcela
Publisher: name: figshare
Year: 2019
Subjects: subject: 180121 Legal Practice, Lawyering and the Legal Profession
subject: FOS: Law

description: El proyecto se encuentra sumido en el análisis y evaluación de la cooperación entre dos sistemas de administración de justicia, esto es, la indígena y ordinaria y el modo en cómo se imparte justicia en la comunidad indígena de Gualalcay de la parroquia El Valle, del Cantón Cuenca en la provincia del Azuay, siendo esta la única comunidad dentro de la provincia competente para aplicar su derecho consuetudinario para sancionar los hechos que alteran la armonía dentro de la comunidad, La investigación se basa en una metodología de tipo analítico, inductivo-deductivo y comparativo que comprende el estudio de la Constitución, el Convenio 169 de la OIT, la jurisprudencia tanto de la Corte IDH y la Corte Constitucional ecuatoriana sobre la materia, doctrina pertinente, jurisprudencia de otras altas cortes de justicia en materia constitucional sobre justicia indígena. El proyecto tiene entre sus objetivos evaluar la situación y modo en que se imparte la justicia indígena en la comunidad de Gualalcay del cantón Cuenca; examinar el ejercicio de la función jurisdiccional desde la perspectiva del pluralismo jurídico; así como, describir la relación de coordinación entre los dos sistemas de administración de justicia. En consecuencia, se espera que este proyecto contribuya al debate académico, teórico y práctico sobre la cooperación entre estos dos sistemas de administración de justicia; y, si se ha producido en la práctica un fenómeno que identificaremos como “la ordinarización” de la justicia indígena en la Comunidad indígena de Gualalcay.
Untitled ItemGenaro Rafael González Baltrón, "El Cojo".Hacer, conocer y ser. Agroecología en primera persona
Creators: name: Val, Valentín
Publisher: name: figshare
Year: 2019
Subjects: subject: Anthropology
subject: FOS: Sociology
subject: 160104 Social and Cultural Anthropology
subject: 160804 Rural Sociology

description: La historia del Cojo es un testimonio importante para la memoria de la agroecología en Cuba, Nuestra América y el mundo. La vida del Cojo y su familia refleja en gran medida la historia del campesinado cubano. Una trayectoria rica y extraordinaria que expresa elementos de la historia de muchas/os campesinos/as cubanas/os; historia(s) cruzada(s) por el proceso revolucionario y la reconfiguración de la sociedad cubana. Retrata los cambios en el medio rural a raíz de la Revolución; el acceso a salud, educación y vivienda, pero también el proceso de “obrerización”, tecnificación y mecanización de las cooperativas de la mano de la revolución verde, guiadas por las ideas de desarrollo, progreso y modernidad. Es también una historia que refleja en primera persona cómo impactaron las medidas adoptadas ante la crisis del periodo especial, cómo se desplegaron las estrategias alternativas al modelo convencional, cómo se fue reconfigurando el espacio rural, cómo se estimuló un proceso de (re)campesinización, cómo fue paulatinamente recuperándose la producción agroalimentaria, y consolidando el modelo campesino agroecológico de producción y de vida. Es la historia de un campesino y a la vez la de miles. En esta historia se condensan y entretejen muchos de los elementos que caracterizan al Movimiento Agroecológico Campesino a Campesino (MACAC) impulsado por la Asociación Nacional de Agricultores Pequeños (ANAP) como movimiento social rural, y la agroecología como alternativa al paradigma del desarrollo de la modernidad hegemónica. Es la historia de un promotor, y a su vez el retrato de cómo se ha ido construyendo y articulando el MACAC hasta su configuración actual. En la historia de vida del Cojo se manifiestan tanto la historia del movimiento agroecológico, como la alternativa de vida que representa. Más allá de sus particularidades, esta es una historia que refleja una forma de ver, sentir y hacer agroecología. Da pistas sobre los aportes campesinos a la agroecología como propuesta integral de vida desde sus prácticas, reflexiones e innovaciones. Aportes concretos y simbólicos para una agroecología desde el surco. Acercarnos brevemente a ella puede darnos pistas sobre cómo se ha ido configurando el MACAC desde una perspectiva privilegiada. Cuba, la ANAP y El Cojo han sido protagonistas fundamentales en la conformación de uno de los movimientos agroecológicos más importantes y exitosos del mundo.
A Fundamental Limit of Measurement Imposed by the Elementary Interactions
Creators: name: Shimizu, Akira
Publisher: name: arXiv
Year: 1999
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Quantum information theory is closely related to quantum measurement theory because one must perform measurement to obtain information on a quantum system. Among many possible limits of quantum measurement, the simplest ones were derived directly from the uncertainty principles. However, such simple limits are not the only limits. I here suggest a new limit which comes from the forms and the strengths of the elementary interactions. Namely, there are only four types of elementary interactions in nature; their forms are determined by the gauge invariance (and symmetry breaking), and their coupling constants (in the low-energy regime) have definite values. I point out that this leads to a new fundamental limit of quantum measurements. Furthermore, this fundamental limit imposes the fundamental limits of getting information on, preparing, and controlling quantum systems.
description: 10 pages including 1 figure. Proc. 3rd Tohwa Univ. Int. Conf. Statistical Physics (Fukuoka, Japan, 1999) to be published from AIP
[Halle (Saale), Universitäts- und Landesbibliothek Sachsen-Anhalt, Morbio 3 (229)]
Creators: name: Marchixius
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 1298
Subjects: subject: Sonstige geistliche Aussteller
subject: Notarsurkunde
subject: Urkunde
subject: 090

description: Frater Marchixius, Praepositus der Kirche St. Cataldi in Cremona, belehnt Delaycus de Mantua, genannt Uidolus Mulinus, aus der Nachbarschaft von St. Crucis mit einem Stück Land, gelegen auf den Besitzungen sanctorum Simonis et Iudae.
Colletes aestivalis Patton 1879
Creators: name: Zarrillo, Tracy A.
name: Stoner, Kimberly A.
name: Ascher, John S.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Colletes
Colletes aestivalis

description: Colletes aestivalis Patton, 1879: 142. (Connecticut holotype).
Holotype. Female USA: Connecticut: New Haven Co., 12 July [1878 or before], W. H. Patton, ex Heuchera americana (lost; replaced by a neotype from Maryland in USNM)
Notes: Connecticut is the type locality of this oligolege of alumroot (Heuchera sp.) (Robertson 1895); however, the type was lost and, in the absence of available Connecticut material, a female from Maryland was designated as the neotype by Stephen (1954). Colletes aestivalis has not been detected in Connecticut since its description in 1879 and there is only one undated historical record for Masaschusetts (Veit et al. 2022[“2021”]). The historical range of C. aestivalis extends up the eastern coast of the United States from Georgia to Massachusetts, and west to Illinois (Mitchell 1960) and Missouri. There have been few recent records of this species in the Northeastern United States, however the paucity of records may be due to lack of targeted collecting on its native host plant. It has been recorded recently in specialized habitat in the Mid-Atlantic region and in the western portion of its range (e.g., Missouri, see https://www.inaturalist.org/observations/139493810).
description: Published as part of Zarrillo, Tracy A., Stoner, Kimberly A. & Ascher, John S., 2025, Biodiversity of Bees (Hymenoptera: Apoidea: Anthophila) in Connecticut (USA), pp. 1-138 in Zootaxa 5586 (1) on page 99, DOI: 10.11646/zootaxa.5586.1.1, http://zenodo.org/record/14895883
Circuit complexity for free Fermion with a mass quench
Creators: name: Jiang, Jie
name: Shan, Jieru
name: Yang, Jianzhi
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: By using a recent approach proposed by Hackl $et\, al.$ to evaluate the complexity of the free fermionic Gaussian state, we compute the complexity of the Dirac vacuum state as well as the excited state of the Fermi system with a mass quench. First of all, we review the counting method given by Hackl $et\, al.$, and demonstrate that the result can be adapted to all of the compact transformation group $G$. Then, we utilize this result to study the time evolution of the complexity of these states. We show that, for the rotational invariant reference state, the total complexity of the incoming vacuum state will saturate the value of the instantaneous vacuum state at the late time, with a typical timescale to achieve the final stable state. Moreover, we find that the complexity growth under the sudden quench is directly proportional to the mass difference, which shares similar behaviors with the holograph complexity growth rate in an AdS-Vaidya black hole with a shock wave, even though the dual boundary CFT is strongly coupled. Finally, we obtain some features of the excited state and the non-rotational reference state.
Diameter of General Knödel Graphs
Creators: name: Musawi, Seyed Reza
name: Kiashi, Esameil Nazari
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C12, 05C30, 05C38

description: The Knödel graph $W_{Δ,n}$ is a $Δ$-regular bipartition graph on $n\ge 2^Δ$ vertices and $n$ is an even integer. The vertices of $W_{Δ,n}$ are the pairs $(i,j)$ with $i=1,2$ and $0\le j\le n/2-1$. For every $j$, $0\le j\le n/2-1$, there is an edge between vertex $(1, j)$ and every vertex $(2,(j+2^k-1) \mod (n/2))$, for $k=0,1,\cdots,Δ-1$. In this paper we obtain some formulas for evaluating the distance of vertices of the Knödel graph and by them, we provide the formula $diam(W_{Δ,n})=1+\lceil\frac{n-2}{2^Δ-2}\rceil$ for the diameter of $W_{Δ,n}$, where $n\ge (2Δ-5)(2^Δ-2)+4$.
description: 16 pages, 1 table, 2 figures
Towards Efficient Hazard Identification in the Concept Phase of Driverless Vehicle Development
Creators: name: Graubohm, Robert
name: Stolte, Torben
name: Bagschik, Gerrit
name: Maurer, Markus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The complex functional structure of driverless vehicles induces a multitude of potential malfunctions. Established approaches for a systematic hazard identification generate individual potentially hazardous scenarios for each identified malfunction. This leads to inefficiencies in a purely expert-based hazard analysis process, as each of the many scenarios has to be examined individually. In this contribution, we propose an adaptation of the strategy for hazard identification for the development of automated vehicles. Instead of focusing on malfunctions, we base our process on deviations from desired vehicle behavior in selected operational scenarios analyzed in the concept phase. By evaluating externally observable deviations from a desired behavior, we encapsulate individual malfunctions and reduce the amount of generated potentially hazardous scenarios. After introducing our hazard identification strategy, we illustrate its application on one of the operational scenarios used in the research project UNICAR$agil$.
description: Published in 2020 IEEE Intelligent Vehicles Symposium (IV), Las Vegas, NV, USA, October 19-November 13, 2020
ВЛИЯНИЕ МЕТЕОУСЛОВИЙ ГОДА И ИНОКУЛЯЦИИ РИЗОБИЯМИ НА ФОРМИРОВАНИЕ УРОЖАЙНОСТИ ЧЕЧЕВИЦЫ И ПОКАЗАТЕЛИ ЕЕ СТРУКТУРЫ
Creators: name: ИКОННИКОВ А.В.
name: ГУРЬЕВ Г.П.
name: СУВОРОВА Г.Н.
Publisher: name: Земледелие
Year: 2021
Subjects: ЧЕЧЕВИЦА (LENS CULINARIS MEDIK.)
ИНОКУЛЯЦИЯ
РИЗОБИИ
СОРТ
УРОЖАЙНОСТЬ
СОДЕРЖАНИЕ БЕЛКА

description: Исследования проводили с целью изучения влияния инокуляции семян бактериями рода Rhizobium и условий выращивания на урожайность и показатели структуры урожая сортов чечевицы Аида и Фламенко. Эксперименты выполняли в 2019-2020 гг. в Орловской области. Схема опыта учитывала три фактора в двух градациях: условия года; сорт; инокуляция семян (контроль и обработка ризобиями). Формирование клубеньков на корнях чечевицы наблюдали во всех вариантах опыта. Инокуляция увеличивала их число, в сравнении с контролем, на 3...8 шт./растение. Дисперсионный анализ выявил значительное влияние фактора условия года на урожайность чечевицы, содержание белка в семенах, длину стебля, продуктивность растения и другие элементы структуры урожая. Сбор семян чечевицы в 2019 г. составил в среднем 2,34 т/га, в 2020 г. - 0,86 т/га. Содержание белка находилось на уровне соответственно 25,2 % и 29,6 %, средняя длина стебля - 39,2 см и 47,9 см. Продуктивность одного растения чечевицы в 2019г. (1,55 г) была в 2,3раза больше, чем в 2020 г. Фактор сорта оказывал влияние на содержание белка (1 %), длину стебля (6,1 %), массу растения (37,6 %). Средняя урожайность сорта Аида в опыте за 2 года составила 1,52 т/га, Фламенко - 1,67 т/га, содержание белка - соответственно 27,1 % и 27,6 %. Фактор инокуляции не оказывал значительного влияния на урожайность чечевицы и другие признаки.
Begonia patula Haw. (May 1819
Creators: name: Moonlight, Peter. W.
name: Jara-Muñoz, Orlando A.
name: Purvis, David A.
name: Delves, Jay
name: Allen, Josh P.
name: Reynel, Carlos
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Cucurbitales
Begoniaceae
Begonia
Begonia patula

description: Begonia patula Haw.
Supplementum Plantarum Succulentarum: 100 (Haworth 1819).
– Type: unknown.
Otto & Dietrich (1836: 358); Klotzsch (1855: 150); Walpers (1843a: 215, 1858: 879); de Candolle (1861: 348, 1864: 302); Smith & Schubert (1950: 245); Smith & Smith (1971: 49); Jacques & Mamede (2005: 581).
Notes
This name was published by Haworth based upon plants cultivated in Loddiges’ nursery in Hackney in 1816 (Haworth 1819: 100). The plants had arrived at Loddiges’ from Mr Gulielmo Anderson, who had in turn received them from Mr C.F. Otto in 1811, the inspector of Berlin Botanical Gardens. The description in the protologue is insufficient for identification and there is no illustration. Most of Haworth’s specimens are deposited in Kew and Oxford herbaria, but we have found no material labelled with this name that predates the publication of the protologue so could be considered type material. It is possible that there is original material among the cultivated material in Kew or Berlin herbarium. We however consider it extremely unlikely that it will ever be possible to determine to which species this name belongs and follow Jacques & Mamede (2005) in suggesting the name is rejected.
We cite B. patula Haw. here because it has frequently been considered the same species as B. fischeri and was published earlier. The first suggestion of this derives from the protologue of B. pauciflora (Lindley 1820: t. 471), which is now considered a synonym of B. fischeri. Lindley considered B. patula Haw. a probable synonym of B. pauciflora, contrary to the principle of priority. Haworth (1821b: cc) later published an addendum in Edward’s Botanical Register, which stated that B. pauciflora and B. patula Haw. were different species. Later authors including Walpers (1843a: 215), Klotzsch (1855: 150), and Smith & Schubert (1950: 245) disregarded this and considered B. patula Haw. an earlier name for B. pauciflora. Alphonse de Candolle (1861: 348; 1864: 302) further confused matters by citing Klotzsch’s 1855 citation of B. patula Haw. as ‘ Begonia patula Klotzsch’, excluding B. paucifolia from the citation and only doubtfully including B. patula Haw. in synonymy. Smith & Wasshausen (1979) were the first to recognise that B. patula Haw. may not be the same species as B. pauciflora, and also the first to cite B. fischeri as the same species as B. pauciflora. In the synonymy of B. fischeri, they cited ‘ Begonia patula sensu Klotzsch non Haw.’
description: Published as part of Moonlight, Peter. W., Jara-Muñoz, Orlando A., Purvis, David A., Delves, Jay, Allen, Josh P. & Reynel, Carlos, 2023, The genus Begonia (Begoniaceae) in Peru, pp. 1-334 in European Journal of Taxonomy 881 on page 307, DOI: 10.5852/ejt.2023.881.2175, http://zenodo.org/record/8178280
ВЛИЯНИЕ ПРЕПАРАТОВ БИОКЛАД И ВЕРМИКС НА ЭЛЕМЕНТЫ ПРОДУКТИВНОСТИ, УРОЖАЙНОСТЬ И КАЧЕСТВЕННЫЕ ПОКАЗАТЕЛИ ЯРОВОГО ЯЧМЕНЯ
Creators: name: МИХАЛЕВА Е.С.
name: МЕРЦАЛОВ Е.Н.
name: ЗЕЛЕНОВ А.А.
name: ТЫЧИНСКАЯ И.Л.
Publisher: name: Земледелие
Year: 2021
Subjects: ОРГАНИЧЕСКИЕ ПРЕПАРАТЫ
ПЛОДОРОДИЕ ПОЧВЫ
ЯЧМЕНЬ ЯРОВОЙ (HORDEUM VULGARE L.)
СТРУКТУРА УРОЖАЯ
УРОЖАЙНОСТЬ
НАТУРА
БЕЛОК

description: Исследования с целью изучения влияния препаратов Биоклад и Вермикс на качественные показатели, урожайность и основные элементы структуры урожая ярового ячменя проводили в Орловской области в 2017-2019 гг. Объект исследований - сорт интенсивного типа Суздалец. Схема опыта предполагала определение эффективности некорневых подкормок изучаемыми препаратами в фазе кущения в дозах по 1 и 2 л/га, а также их сочетания в аналогичных дозах (1+1 л/га и 2+2 л/га), контроль - без обработки. Препараты Биоклад и Вермикс, независимо от нормы расхода, обеспечивали улучшение условий роста и развития культурных растений, что привело к увеличению урожайности ячменя на 11...14 %, густоты продуктивного стеблестоя - на 10 %, массы и количества зерен в колосе - на 13 % и 18 % соответственно. Наиболее продуктивные в опыте агроценозы культуры были сформированы при обработке препаратом Биоклад, максимальная в опыте стабильная прибавка урожайности, по сравнению с контролем, при дозе 1 л/га в среднем составила 0,59 т/га, 2 л/га - 0,61 т/га. Содержание белка при использовании 1 л/га Биоклада отдельно и совместно с таким же количеством Вермикса увеличивалось до 11,9 %, только 1 л/га Вермикса - до 11,7 %. Применение изучаемых препаратов в нормах 2 л/га привело к увеличению содержания белка до 13,5 и 14,8 %.