cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Combining FOF and halo-based algorithms for the identification of galaxy groups
Creators: name: Rodriguez, Facundo
name: Merchán, Manuel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Galaxy groups provide the means for a great diversity of studies that contribute to a better understanding of the structure of the universe on a large scale and allow the properties of galaxies to be linked to those of the host halos. However, the identification of galaxy systems is a challenging task and therefore it is necessary to improve the techniques involved as much as possible. In view of the large present and forthcoming galaxy catalogues, we propose, implement, and evaluate an algorithm that combines the two most popular techniques used to identify galaxy systems. The algorithm can be easily applied to any spectroscopic galaxy catalogue, but here we demonstrate its use on the Sloan Digital Sky Survey. Assuming that a galaxy group is a gravitationally bounded system that has at least one bright galaxy, we begin by identifying groups with a Friends-Of-Friends algorithm adapted to fit this definition. In view of the shortcomings of this method, particularly the lack of ability to identify low-number groups, and consequently the inability to study the occupation of halos throughout the mass range, we improve it by adding a halo-based procedure. To assess the performance, we construct a mock catalogue from a semi-analytical model to compare the groups identified using our method with those obtained from the simulation. The comparison of groups extracted using our method with those of a mock catalogue shows that the proposed algorithm provides excellent results. The modifications introduced to the Friends-Of-Friends algorithm in the first part of the procedure to fit the adopted group definition gave reliable groups. Furthermore, the incorporation of the halo-based method reduces the interlopers while more accurately reproducing the number of galaxies per group. As a specific application, we use the algorithm to extract groups from the Sloan Digital Sky Survey.
description: 11 pages and 9 figures
Complete Density Calculations of q-State Potts and Clock Models: Reentrance of Interface Densities under Symmetry Breaking
Creators: name: Artun, E. Can
name: Berker, A. Nihat
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: All local bond-state densities are calculated for q-state Potts and clock models in three spatial dimensions, d=3. The calculations are done by an exact renormalization group on a hierarchical lattice, including the density recursion relations, and simultaneously are the Migdal-Kadanoff approximation for the cubic lattice. Reentrant behavior is found in the interface densities under symmetry breaking, in the sense that upon lowering temperature the value of the density first increases, then decreases to its zero value at zero temperature. For this behavior, a physical mechanism is proposed. A contrast between the phase transition of the two models is found, and explained by alignment and entropy, as the number of states q goes to infinity. For the clock models, the renormalization-group flows of up to twenty energies are used.
description: Published version, 8 pages, 7 figures, 1 table
Observational constraints on dark energy model
Creators: name: Gong, Yungui
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The recent observations support that our universe is flat and expanding with acceleration. A quintessence model with a general relation between the quintessence potential and the quintessence kinetic energy was proposed to explain the phenomenon. The dark energy potential includes both the hyperbolic and the double exponential potentials. We analyze this model in detail by using the recent supernova and the first year Wilkinson Microwave Anisotropy Probe (WMAP) observations. For a flat universe dominated by a dark energy with constant $ω$ which is a special case of the general model, we find that $Ω_{\rm m0}=0.30^{+0.06}_{-0.08}$ and $ω_{\rm Q}\le -0.82$, and the turnaround redshift $z_{\rm T}$ when the universe switched from the deceleration phase to the acceleration phase is $z_{\rm T}=0.65$. For the general model, we find that $Ω_{\rm m0}\sim 0.3$, $ω_{\rm Q0}\sim -1.0$, $β\sim 0.5$ and $z_{\rm T}\sim 0.67$. A model independent polynomial parameterization is also considered, the best fit model gives $Ω_{\rm m0}=0.40\pm 0.14$, $ω_{\rm Q0}=-1.4$ and $z_{\rm T}=0.37$.
description: 10 pages, 9 figures, update refererences, use ws-ijmpd style, use new supernova data and add model independent analysis. The updated paper also use a new method, fitting the WMAP data, main results remain unchanged. V4: more references added, accepted for publication in Int. J. Mod. Phys. D
Kryoturbationsartige Sedimentstrukturen im Pliozän und Altquartär der südlichen Niederrheinischen Bucht: Ein Beitrag zur Unterscheidung kryogener und nichtkryogener Sedimentstrukturen
Creators: name: Kowalczyk, Gotthard
Publisher: name: Geozon Science Media
Year: 1974

description: Aus fluviatilen Ablagerungen des Jungpliozäns und Altquartärs der südlichen Niederrheinischen Bucht werden Sedimentstrukturen beschrieben, deren Deutung als Kryoturbationen oder Bildungen, die nicht klimabedingt sind, unsicher ist. Genese und Unterscheidungsmöglichkeiten beider Formen werden diskutiert.
description: research
$D^0-\bar{D^0}$ Mixing and Rare Charm Decays
Creators: name: Burdman, Gustavo
name: Shipsey, Ian
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We review the current status of flavor-changing neutral currents in the charm sector. We focus on the standard-model predictions and identify the main sources of theoretical uncertainties in both charm mixing and rare charm decays. The potential of these observables for constraining short-distance physics in the standard model and its extensions is compromised by the presence of large nonperturbative effects. We examine the possible discovery windows in which short-distance physics can be tested and study the effects of various extensions of the standard model. The current experimental situation and future prospects are reviewed.
description: 62 pages, 14 figures. To appear in Annual Review of Nuclear and Particle Science, Volume 53, December 2003
What do class comments tell us? An investigation of comment evolution and practices in Pharo Smalltalk
Creators: name: Rani, Pooja
name: Panichella, Sebastiano
name: Leuenberger, Manuel
name: Ghafari, Mohammad
name: Nierstrasz, Oscar
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Previous studies have characterized code comments in various programming languages to support better program comprehension activities and maintenance tasks. However, very few studies have focused on understanding developer practices to write comments. None of them has compared such developer practices to the standard comment guidelines to study the extent to which developers follow the guidelines. This paper reports the first empirical study investigating commenting practices in Pharo Smalltalk. First, we analyze class comment evolution over seven Pharo versions. Then, we investigate the information types embedded in class comments. Finally, we study the adherence of developer commenting practices to the official class comment template over Pharo versions. The results of this study show that there is a rapid increase in class comments in the initial three Pharo versions, while in subsequent versions developers added comments to both new and old classes, thus maintaining a similar code to comment ratio. We furthermore found three times as many information types in class comments as those suggested by the template. However, the information types suggested by the template tend to be present more often than other types of information. Additionally, we find that a substantial proportion of comments follow the writing style of the template in writing these information types, but they are written and formatted in a non-uniform way.This suggests the need to standardize the commenting guidelines for formatting the text, and to provide headers for the different information types to ensure a consistent style and to identify the information easily. Given the importance of high-quality code comments, we draw numerous implications for developers and researchers to improve the support for comment quality assessment tools.
description: 35 pages, 26 figures, 10 tables, Journal format, five authors, three research questions
Encotyllabe pagrosomi MacCallum 1917
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Capsalidea
Capsalidae
Encotyllabe
Encotyllabe pagrosomi

description: Encotyllabe pagrosomi MacCallum, 1917
 Encotyllabe pagrosomi MacCallum, 1917: 197.
HOSTS. — Actinopterygii (gills).
 GEOGRAPHIC DISTRIBUTION. — Baja California Sur. Canal Cerralvo: Caulolatilus affinis (Pérez-Urbiola 1995) **.
 Sinaloa. Mazatlán: Pomadasys macracanthus (Bravo-Hollis 1957).
SPECIMENS IN COLLECTIONS. — CNHE (141).
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 507, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
Über morphologische Formengruppen der Erosion an der Ems
Creators: name: Hempel, Ludwig
Publisher: name: Geozon Science Media
Year: 1963

description: Zwischen Warendorf und Rheine wurden die Talstufen an der Ems nach morphologischen Gesichtspunkten kartiert. Dabei wurden neben den natürlich bedingten auch die anthropogen verursachten Abtragungs- und Aufschüttungsprozesse berücksichtigt. Es stellte sich heraus, daß die sogenannte große Emsterrasse morphologisch und chronologisch nicht einheitlich aufgebaut ist. Teile sind echte Flächen einer oberen Niederterrasse, andere Strecken sind als fluviatil getönte Äquivalente der Mittelterrassenzeit aufzufassen. Sichere Zeichen für Mittelterrassenreste finden sich zwischen Warendorf und Telgte (südlich der Ems), zwischen Saerbeck und Emsdetten sowie bei Rheine.
description: research
R CrB Candidates in the Small Magellanic Cloud: Observations of Cold, Featureless Dust with the Spitzer Infrared Spectrograph
Creators: name: Kraemer, Kathleen E.
name: Sloan, G. C.
name: Wood, P. R.
name: Price, Stephan D.
name: Egan, Michael P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We observed 36 evolved stars in the Small Magellanic Cloud (SMC) using the low-resolution mode of the Infrared Spectrograph (IRS) on the Spitzer Space Telescope. Two of these stars, MSX SMC 014 and 155, have nearly featureless spectral energy distributions over the IRS wavelength range (5.2-35 um) and F_nu peaking at ~8-9 um. The data can be fit by sets of amorphous carbon shells or by single 600-700 K blackbodies. The most similar spectra found in extant spectral databases are of R CrB, although the spectral structure seen in R CrB and similar stars is much weaker or absent in the SMC sources. Both SMC stars show variability in the near-infrared. Ground-based visual spectra confirm that MSX SMC 155 is carbon-rich, as expected for R CrB (RCB) stars, and coincides with an object previously identified as an RCB candidate. The temperature of the underlying star is lower for MSX SMC 155 than for typical RCB stars. The strength of the C_2 Swan bands and the low temperature suggest that it may be a rare DY Per-type star, only the fifth such identified. MSX SMC 014 represents a new RCB candidate in the SMC, bringing the number of RCB candidates in the SMC to six. It is the first RCB candidate discovered with Spitzer and the first identified by its infrared spectral characteristics rather than its visual variability.
description: Accepted by ApJ Letters 25 August, 2005, 4 pages (emulateapj), 5 figures
Living on the Frontiers of Ladakh.pdf
Creators: name: Jain, Avi
Publisher: name: figshare
Year: 2020
Subjects: subject: 160804 Rural Sociology
subject: FOS: Sociology

description: Ladakh has always been a strategic location for India. It shares borders with two distinct political neighbors Pakistan and China. Moreover, it is a prominent location for tourism and Bollywood movies. However, much concern is given to the advancements of India’s army base in Ladakh, a
very little attention in induced to other development prospects especially with respect to rural development (Bray, 1988). It becomes increasingly important to understand the functioning of a village and associated challenges in day to day rural life of Ladakh. The paper attempts to explore various facets of a Ladakhi village. The focus here is to present an exploratory study of the Ayee village which is situated in Nubra Valley, Ladakh. The paper incorporates an ethnographic cum survey-based approach where the research comes out as a result of two months stay in the Ayee Village.
An agro-economic evaluation of fertilization methods for White Potato (Solanum tuberosum L.) in Montserrat
Creators: name: Fletcher, R.E.
name: Weekes, C.S.
name: Fletcher, R.E.
name: Weekes, C.S.
Publisher: name: Unknown
Year: 1987
Subjects: subject: Crop Production/Industries
subject: Research and Development/Tech Change/Emerging Technologies
subject: White potato
subject: Solanum tuberosum
subject: fertilization

description: Eight fertilizer regimes comprising traditional and recommended alternatives were evaluated on three farms during the 1985/86 cropping season. In terms of marketable yield, the currently recommended practice of pen manure with all P205 and one half N and K20 at planting, with the remainder at first weeding was significantly better than all other treatments. The alternative, pen manure only, was second best, while the recommended practice without pen manure ranked third. However, in terms of economics, marginal rates of return for these treatments relative to the control were 649, 992 and 429 per cent, respectively. Although the riskiness of the treatments were not explicitly considered, the high marginal rates of return should motivate even risk averse farmers.
Analysis of Thin Plates with Varying Thickness
Creators: name: Güven, Murat
Publisher: name: figshare
Year: 2020
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: In this paper, the analysis is based on classical thin plate theory, and it's solution is carried out by using the small parameter method and Levy's method.
Ein frühpleistozänes Pollenprofil aus dem nördlichen Alpenvorland
Creators: name: Filzer, Paul
name: Scheuenpflug, Lorenz
Publisher: name: Geozon Science Media
Year: 1970

description: Am Uhlenberg, ca. 21 km westlich Augsburg im Gebiet der Zusamplatte, fand sich in einer aufgelassenen Kiesgrube, eingelagert in graue und braune Lehme, die von glazifluvialen Schottern höchstwahrscheinlich donauzeitlichen Alters unterlagert werden, eine etwa 75 cm mächtige kohlige Schicht. Ihre pollenanalytische Untersuchung vermittelte Einblicke in Teilabschnitte der frühpleistozänen Vegetationsentwicklung im nördlichen Alpenvorland: beträchtliche, nach oben abnehmende Anteile des Pollens von Tsuga und des haploxylon-Typs von Pinus, geringe Beigaben von Castanea, Spuren von Pterocarya und (?)Carya. Nach oben findet eine starke Artenverarmung des Waldes statt; die oberste Probe enthält bereits deutliche Hinweise auf kaltzeitliches Klima. Die unmittelbar unter dem Flöz lagernden Lehme sind durch ein Massenvorkommen der Sporen von Osmunda gekennzeichnet. In tieferem Niveau zeichnet sich ein Fichten-Kiefern-Wald ab. Die pollenanalytischen Befunde beweisen in Übereinstimmung mit den geologischen Gegebenheiten das frühpleistozäne, wahrscheinlich donau/günz-interglaziale Alter der Fundstelle.
description: research
Non-contact, non-destructive mapping of thermal diffusivity and surface acoustic wave speed using transient grating spectroscopy
Creators: name: Reza, Abdallah
name: Dennett, Cody A.
name: Short, Michael P.
name: Waite, John
name: Zayachuk, Yevhen
name: Magazzeni, Christopher M.
name: Hills, Simon
name: Hofmann, Felix
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present new developments of the laser-induced transient grating spectroscopy (TGS) technique that enable the measurement of large area 2D maps of thermal diffusivity and surface acoustic wave speed. Additional capabilities include targeted measurements and the ability to accommodate samples with increased surface roughness. These new capabilities are demonstrated by recording large TGS maps of deuterium implanted tungsten, linear friction welded aerospace alloys and high entropy alloys with a range of grain sizes. The results illustrate the ability to view grain microstructure in elastically anisotropic samples, and to detect anomalies in samples, for example due to irradiation and previous measurements. They also point to the possibility of using TGS to quantify grain size at the surface of polycrystalline materials.
description: The following article has been submitted to Review of Scientific Instruments. After it is published, it will be found at https://aip.scitation.org/journal/rsi
Encotyllabe Diesing 1850
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Capsalidea
Capsalidae
Encotyllabe

description: Encotyllabe sp.
HOSTS. — Actinopterygii (gills).
 GEOGRAPHIC DISTRIBUTION. — Tabasco. Centro Acuícola Teapa: Oreochromis niloticus (Texta-Camacho 2003) **; Laguna El Rosario: Eugerres plumieri (López-Jiménez 2001).
 Veracruz. Playa Las Barrancas (Alvarado): Menticirrhus americanus, Menticirrhus littoralis (Montoya-Mendoza et al. 2008).
SPECIMENS IN COLLECTIONS. — CNHE (6196).
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 507, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
On finite groups with elements of prime power orders
Creators: name: Shi, Wujie
name: Yang, Wenze
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20D05, 20D10, 20D20. 20D05, 20D10, 20D20. 20D05, 20D10, 20D20

description: In this paper we study the finite groups in which every element has prime power order, briefly them EPPO-groups. The classification of EPPO-groups is given including the cases of solvable, non-solvable and simple EPPO-groups. This paper is published in Journal of Yunnan Education College, no.1(1986), p.2-10 (in Chinese). Translate it to English is helpful for readers for citing some conclusions of this paper. For example, the result of solvable EPPO-groups(see Theorem 2.4 in the text) is detailed more than G. Higman's conclusion (see reference 1 in this paper).
description: 11 pages
Battery draining attacks against edge computing nodes in IoT networks
Creators: name: Smith, Ryan
name: Palin, Daniel
name: Ioulianou, Philokypros P.
name: Vassilakis, Vassilios G.
name: Shahandashti, Siamak F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Many IoT devices, especially those deployed at the network edge have limited power resources. A number of attacks aim to exhaust these resources and drain the batteries of such edge nodes. In this work, we study the effects of a variety of battery draining attacks against edge nodes. Through simulation, we clarify the extent to which such attacks are able to increase the usage and hence waste the power resources of edge nodes. Specifically, we implement hello flooding, packet flooding, selective forwarding, rank attack, and versioning attack in ContikiOS and simulate them in the Cooja simulator, and measure and report a number of time and power resource usage metrics including CPU time, low power mode time, TX/RX time, and battery consumption. Besides, we test the stretch attack with three different batteries as an extreme scenario. Our extensive measurements enable us to compare the effectiveness of these attacks. Our results show that Versioning attack is the most severe attack in terms of draining the power resources of the network, followed by Packet Flooding and Hello Flood attacks. Furthermore, we confirm that Selective Forwarding and Rank attacks are not able to considerably increase the power resource usage in our scenarios. By quantifying the effects of these attacks, we demonstrate that under specific scenarios, Versioning attack can be three to four times as effective as Packet Flooding and Hello Flood attacks in wasting network resources, while Packet Flooding is generally comparable to Hello Flood in CPU and TX time usage increase but twice as powerful in draining device batteries.
description: 19 pages,
title: 01_2495
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/
Listrocephalos kearni Bullard, Payne & Braswell 2004
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Capsalidea
Capsalidae
Listrocephalos
Listrocephalos kearni

description: Listrocephalos kearni Bullard, Payne & Braswell, 2004 §
 Listrocephalos kearni Bullard, Payne & Braswell, 2004: 1419.
HOSTS. — Elasmobranchii (skin).
 GEOGRAPHIC DISTRIBUTION. — Baja California. Bahía de Los Ángeles: Dasyatis brevis ( Bullard et al. 2004 ).
 Baja California Sur. Santa Rosalía: D. brevis (Bullard et al. 2004).
SPECIMENS IN COLLECTIONS. — CNHE (5021-2) (H, P); USNM (94829-34)(P).
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 507, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
Bedeutsame integrative Förderdiagnostik und adaptive Fördertätigkeit Ahoi auf dem Piratenschiff
Creators: name: Joos Marti, Regula
name: Looser-Inauen, Regula
Publisher: name: Zenodo
Year: 2017
Subjects: Sonderpädagogik
Sonderpädagogische Diagnostik
Mathematik
Sprache
Masterarbeit

description: Wie muss ein Instrument ausgestattet sein, mit dem die Kompetenzbereiche Mathematik und Sprache innerhalb des Unterrichts in 1./2. Primarklassen ermittelt und gefördert werden können? Abgestützt auf theoretische Grundlagen von Diagnostik, Fördertätigkeit, Mathematik und Deutsch wurde zum Thema Piraten ein Programm entwickelt, das aus Fördermaterialien, einem Manual sowie aus Auswertungstabellen besteht. Der Schwerpunkt lag auf der integrativen, themenbezogenen Diagnostik, der adaptiven Fördertätigkeit und dem flexiblen Interview. Das Programm kam in sechs Klassen zur Anwendung. Tests, Beobachtungen und Befragungen der Lehrpersonen zeigten, dass ein motivierendes Thema in Kombination mit dem flexiblen Interview für die integrierte Diagnostik und
 die Fördertätigkeiten neuartig und gewinnbringend ist.
Algebraic structures on valuations, their properties and applications
Creators: name: Alesker, Semyon
Publisher: name: arXiv
Year: 2003
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 46, 47

description: We describe various structures of algebraic nature on the space of continuous valuations on convex sets, their properties (like versions of Poincaré duality and hard Lefschetz theorem), and their relations and applications to integral geometry.
Contrary to Conventional Wisdom, Smuggled Chicken Imports are not Holding Back Rapid Development of the Chicken Value Chain in Nigeria
Creators: name: Ogunleye, Wale O.
name: Sanou, Awa
name: Liverpool-Tasie, Lenis Saweda O.
name: Reardon, Thomas
name: Ogunleye, Wale O.
name: Sanou, Awa
name: Liverpool-Tasie, Lenis Saweda O.
name: Reardon, Thomas
Publisher: name: Unknown
Year: 2016
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: International Development
subject: Nigeria
subject: poultry
subject: chicken

description: Poultry imports into Nigeria were banned starting in 2003. While Nigeria dropped a lot of bans on imports of other products in the 2000s (WTO 2011), the government kept the ban on imports of live or frozen chickens, with the exception of day-old chicks (Sahel Capital 2015; PIND 2013). A decade after the chicken import ban, debate continues over whether and why Nigeria is or could be able to supply its large domestic demand for chicken. Some think one reason is that there is a huge volume of smuggled imported frozen chickens over porous borders with Benin and lack of government assiduity to fully implement the import ban (USDA 2014). But there is huge variation over estimates of how much smuggled chicken is coming into Nigeria. Some say most of the 14.2 million birds reported imported into Benin in 2014 are thought to make their way into Nigeria (Hinshaw 2015). Others put the number vastly higher: the Poultry Association of Nigeria claims 725 million frozen chickens are slipped past the official import ban (The Poultry Site 2015a); Sahel Capital (2015) thinks it is 635 million frozen chickens.
COMUNIICA No. 8 - AREA DE LIBRE COMERCIO DE LAS AMERICAS
COMUNIICA No. 8 - FREE TRADE AREA OF THE AMERICAS
Creators: name: Inter-American Institute For Cooperation On Agriculture (IICA)
name: Inter-American Institute For Cooperation On Agriculture (IICA)
Publisher: name: Unknown
Year: 1998
Subjects: Agricultural and Food Policy
International Development
International Relations/Trade
Research and Development/Tech Change/Emerging Technologies

description: Entire issue. Dual-language Spanish and English. EDITORIAL SECTION: *The Agreement on Agriculture and the Work at the WTO Committee on Agriculture - Ambassador Nestor Osorio Londoño. *Latin American and Caribbean Agriculture and the Free Trade Area of the Americas - Jorge Caro. *Intellectual Property Rights in Agriculture - Francisco Astudillo y Enrique Alarcon. *Sanitary and Phytosanitary Measures: an Essential Component of the FTAA Negotiations - Hector Campos. *The Role of Commodity Exchanges in the Modernization of Marketing Systems - Luis Lizarazo. *The Environment, Trade and the FTAA - Juan Antonio Aguirre.
Versuch einer neuen Pleistozän-Gliederung
Creators: name: Hesemann, Julius
Publisher: name: Geozon Science Media
Year: 1970

description: Die Fülle altbekannter und neuerdings gefundener Bildungen sowie physikalischer Messungen des Pleistozäns legt ein intergredierendes Gliederungsschema zur wahlweisen Einordnung der Fakten nahe. Es basiert auf einer durch die Kalt- und Warmzeiten repräsentierten Zyklik und ist auf Mitteleuropa bezogen. Die Einwirkung von mindestens 25 Zyklen auf die Tier- und Pflanzenwelt wird diskutiert.
description: research
Dead Zones and Extrasolar Planetary Properties
Creators: name: Matsumura, Soko
name: Pudritz, Ralph E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Most low-mass protostellar disks evolve in clustered environments where they are affected by external radiation fields, while others evolve in more isolated star-forming regions. Assuming that the magneto-rotational instability (MRI) is the main source of viscosity, we calculate the size of a poorly ionized, MRI inactive, and hence low viscosity region - the "dead zone" - in these protostellar disks. We include disk ionization by X-rays, cosmic rays, radioactive elements and thermal collisions, recombination by molecules, metals, and grains, as well as the effect of turbulence stimulation in the dead zone by the active layers lying above it. We also calculate the gap-opening masses of planets, which are determined by a disk's viscosity and a disk aspect ratio, for disks in these environments and compare them with each other. We find that the dead zone is a robust feature of the protostellar disks that is largely independent of their environment, typically stretching out to ~ 15 AU. We analyze the possible effects of dead zones on planet formation, migration, and eccentricity evolution. We show that the gap-opening mass inside the dead zone is expected to be of the order of terrestrial and ice giant mass planets while that outside the dead zone is Jovian or super-Jovian mass planets, largely independent of the star-forming environment. We show that dead zones can significantly slow down both type I and type II planetary migration due to their lower viscosity. We also find that the growth of eccentricity of massive extrasolar planets is particularly favorable through the planet-disk interaction inside the dead zones due to the large gaps expected to be opened by planets.
description: 13 pages, 11 figures, minor changes, accepted for publication in MNRAS
Extinction by citation deficiency: are botany journals at risk? [supplementary materials]
Creators: name: Riley, Ian
Publisher: name: figshare
Year: 2022
Subjects: Botany

description: Supplementary materials for Riley, I.T. (2022), "Extinction by citation deficiency: are botany journals at risk?", Journal of Documentation, https://doi.org/10.1108/JD-09-2021-0181.
Can a wormhole supported by only small amounts of exotic matter really be traversable?
Creators: name: Kuhfittig, Peter K. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent studies have shown that (a) quantum effects may be sufficient to support a wormhole throat and (b) the total amount of "exotic matter" can be made arbitrarily small. Unfortunately, using only small amounts of exotic matter may result in a wormhole that flares out too slowly to be traversable in a reasonable length of time. Combined with the Ford-Roman constraints, the wormhole may also come close to having an event horizon at the throat. This paper examines a model that overcomes these difficulties, while satisfying the usual traversability conditions. This model also confirms that the total amount of exotic matter can indeed be made arbitrarily small.
description: 8 pages, AMSTeX
COMUNIICA No. 9 - REFLEXION SOBRE EL AGRO LATINOAMERICANO
COMUNIICA No. 9 - THOUGHTS ON AGRICULTURE IN LATIN AMERICA
Creators: name: Inter-American Institute For Cooperation On Agriculture (IICA)
name: Inter-American Institute For Cooperation On Agriculture (IICA)
Publisher: name: Unknown
Year: 1998
Subjects: Agricultural and Food Policy
Community/Rural/Urban Development
Crop Production/Industries
Environmental Economics and Policy
International Development

description: Entire issue. Dual-language Spanish and English. EDITORIAL SECTION: Development of the fruit sector in Chile - Minister Carlos Mladinic Alonso. *Agriculture, rural development, environment and Ibero-American Cooperation - Minister Sergio Chiesa Duhalde. *The strategic role of the rural sector in the development of LAC - Gerardo Escudero. *What is CENERGEN? - Alfonso Celso Candeira Valois. *Environmental and natural resource management in Latin America and the Carbbean Region - Gertjan B. Beekman.
Complexity and hierarchical game of life
Creators: name: Gotz, Ivan
name: Rubinstein, Isaak
name: Tsvetkov, Eugene
name: Zaltzman, Boris
Publisher: name: arXiv
Year: 2003
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: Hierarchical structure is an essential part of complexity, important notion relevant for a wide range of applications ranging from biological population dynamics through robotics to social sciences. In this paper we propose a simple cellular-automata tool for study of hierarchical population dynamics.
Mass loss in tidally stripped systems; the energy-based truncation method
Creators: name: Drakos, Nicole E.
name: Taylor, James E.
name: Benson, Andrew J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The ability to accurately predict the evolution of tidally stripped haloes is important for understanding galaxy formation and testing the properties of dark matter. Most studies of substructure evolution make predictions based on empirical models of tidal mass loss that are calibrated using numerical simulations. This approach can be accurate in the cases considered, but lacks generality and does not provide a physical understanding of the processes involved. Recently, we demonstrated that truncating NFW distribution functions sharply in energy results in density profiles that resemble those of tidally stripped systems, offering a path to constructing physically motivated models of tidal mass loss. In this work, we review calculations of mass loss based on energy truncation alone, and then consider what secondary effects may modulate mass loss beyond this. We find that a combination of dependence on additional orbital parameters and variations in individual particle energies over an orbit results in a less abrupt truncation in energy space as a subhalo loses mass. Combining the energy truncation approach with a simple prediction for the mass-loss rate, we construct a full model of mass loss that can accurately predict the evolution of a subhalo in terms of a single parameter $η_{\rm eff}$. This parameter can be fully determined from the initial orbital and halo properties, and does not require calibration with numerical simulations.
description: 20 pages, 14 figures, accepted to MNRAS
Permafrost am Pico de Orizaba/Mexiko
Creators: name: Heine, Klaus
Publisher: name: Geozon Science Media
Year: 1975

description: Permafrost tritt in Mexiko (ca. 19° N) am Pico de Orizaba in Höhen zwischen 5000 und 4600 m auf. Der Permafrost ist fossil. Verschiedene Bodeneistypen können unterschieden werden. Die Permafrostvorkommen unterhalb der Schneegrenze (ca. 5000 m) zeigen, daß Schneegrenze und Untergrenze des Permafrostes in Mexiko nicht mit dem von Baranov für die Tropen angegebenen Verlauf übereinstimmen.
description: research
Riss or Würm?
Creators: name: Zeuner, F. E.
Publisher: name: Geozon Science Media
Year: 1954

description: Die Klimaschwankungen des jüngeren Pleistozäns werden anhand von drei unabhängigen Gruppen von Beobachtungsmaterial besprochen, nämlich von Schwankungen des Meeresspiegels, den Terrassenunterkanten der Themse und den fossilen Böden der Lößzone von Nordfrankreich bis Niederösterreich. Die gleiche Abfolge von Klimaphasen ergibt sich in jedem Falle. Das Letzte Interglazial weist in der Mitte eine leichte Schwankung auf und war zeitweilig sommer-wärmer als heute. Die folgende Kaltphase war kurz, aber intensiv (Meeresspiegel ca. —100 m), und auf sie folgte eine Warmphase mit durchaus gemäßigtem Klima (Halling-Stage der Themse), welche oft mit dem Letzten Interglazial verwechselt wird. Auf diese Phase folgt die Vereisungsgruppe Weichsel-Wurm. Die vorausgehende Kaltphase wird oft als Jungriß bezeichnet, doch ist Würm I vorzuziehen, da das vorausgehende Interglazial länger war als das Interstadial zwischen der fraglichen Phase und dem jüngeren Würmkomplex.
description: research
Finite low-temperature entropy of some strongly frustrated quantum spin lattices in the vicinity of the saturation field
Creators: name: Derzhko, Oleg
name: Richter, Johannes
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: For a class of highly frustrated antiferromagnetic quantum spin lattices the ground state exhibits a huge degeneracy in high magnetic fields due to the existence of localized magnon states. For some of these spin lattices (in particular, the 1D dimer-plaquette, sawtooth and kagomé-like chains as well as the 2D kagomé lattice) we calculate rigorously the ground-state entropy at the saturation field. We find that the ground-state entropy per site remains finite at saturation. This residual ground-state entropy produces a maximum in the field dependence of the isothermal entropy at low temperatures. By numerical calculation of the field dependence of the low-temperature entropy for the sawtooth chain we find that the enhancement of isothermal entropy is robust against small deviations in exchange constants. Moreover, the effect is most pronounced in the extreme quantum case of spin 1/2.
COMUNIICA No. 10 - CENTRO REGIONAL NORTE DEL IICA
COMUNIICA No. 10 - IICA'S NORTHERN REGIONAL CENTER
Creators: name: Inter-American Institute For Cooperation On Agriculture (IICA)
name: Inter-American Institute For Cooperation On Agriculture (IICA)
Publisher: name: Unknown
Year: 1999
Subjects: Agribusiness
Agricultural and Food Policy
Community/Rural/Urban Development
Environmental Economics and Policy
International Relations/Trade

description: Entire issue. Dual-language Spanish and English. Articles: *The role of IICA's Northern Regional Center in Hemispheric Integration - Larry M. Boone. *Agriculture in the Americas: Beyond a Sectoral View - Gerardo Escudero Columna. *Canadian Food Inspection Agency: The First Year - Secretary Lyle Vanclief. *Reforming the Federal System: The Canadian Food Inspection Agency (CFIA) - Ronald L. Doering. *Aquaculture in Canada - Secretary Gilbert Norman. *American Agriculture and IICA: Common Goals for the 21st Century - Secretary Dan Glickman. *The Alaska Experience as a Roadmap for Integrating Indigenous Peoples into the Economies of the Americas - Congressman Don Young. *A New Harvest: Sowing the Seeds for Soil Remediation, Renewable Energy, and Resource Recovery - DeAndra Beck. *ICCA Meets the Challenge for the Future in Agriculture - Perry M. Petersen. *Mexico: Trade opening and Policy Adjustments in the Agricultural Sector - Under Secretary Andres Casco Flores. *Developing and Strengthening the Capabilities of Rural Women and their Economic Organizations - Beatriz Rivera Fernandez. *Phytosanitary Pre-Inspection Export Programs: Mexico's Experience - Juan Jose Salazar Cruz, et al.
Inferring UK COVID-19 fatal infection trajectories from daily mortality data: were infections already in decline before the UK lockdowns?
Creators: name: Wood, Simon N.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applications (stat.AP)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: The number of new infections per day is a key quantity for effective epidemic management. It can be estimated relatively directly by testing of random population samples. Without such direct epidemiological measurement, other approaches are required to infer whether the number of new cases is likely to be increasing or decreasing: for example, estimating the pathogen effective reproduction number, R, using data gathered from the clinical response to the disease. For Covid-19 (SARS-CoV-2) such R estimation is heavily dependent on modelling assumptions, because the available clinical case data are opportunistic observational data subject to severe temporal confounding. Given this difficulty it is useful to retrospectively reconstruct the time course of infections from the least compromised available data, using minimal prior assumptions. A Bayesian inverse problem approach applied to UK data on first wave Covid-19 deaths and the disease duration distribution suggests that fatal infections were in decline before full UK lockdown (24 March 2020), and that fatal infections in Sweden started to decline only a day or two later. An analysis of UK data using the model of Flaxman et al. (2020, Nature 584) gives the same result under relaxation of its prior assumptions on R, suggesting an enhanced role for non pharmaceutical interventions (NPIs) short of full lock down in the UK context. Similar patterns appear to have occurred in the subsequent two lockdowns. Estimates from the main UK Covid statistical surveillance surveys, available since original publication, support these results. Replication code for the paper is available in the supporting information of doi/10.1111/biom.13462.
description: Gives the location of the replication code and corrects an accidental deletion in the first line of the conclusions
Was There a Decelerating Past for the Universe?
Creators: name: John, Moncy V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this talk, I argue that the method of analysing the m-z data of Type Ia Supernovae (SNe Ia) by assuming exotic energy densities with strange equations of state is misleading and the reasonable remaining option is to make a model-independent analysis of SNe data, without reference to the energy densities. Using this cosmographic method, we address an important question relevant to cosmology: Was there a decelerating past for the universe? To answer this, the Bayes's probability theory is employed, which is the most appropriate tool for quantifying our knowledge when it changes through the acquisition of new data. The cosmographic approach helps to sort out models which were always accelerating from those which decelerated for at least some time in the period of interest. Bayesian model comparison technique is used to discriminate these rival hypotheses with the aid of recent releases of supernova data. It is argued that the lessons learned using Bayesian theory are extremely valuable to avoid frequent U-turns in cosmology.
description: Based on a talk given in the 1st Crisis in Cosmology Conference (CCC-1), June 23-25, 2005 at Moncao, Portugal. To appear in the proceedings
Nasicola klawei
Creators: name: Mendoza-Garfias, Berenit
name: García-Prieto, Luis
name: León, Gerardo Pérez-Ponce De
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Platyhelminthes
Monogenea
Capsalidea
Capsalidae
Nasicola
Nasicola klawei

description: Nasicola klawei (Stunkard, 1962)
 Caballerocotyla klawei Stunkard, 1962: 883.
 Nasicola klawei – Yamaguti 1968: 53.
HOSTS. — Actinopterygii; Nasal capsule.
 GEOGRAPHIC DISTRIBUTION. — Colima. Off shore Colima: Thunnus albacares (Stunkard 1962).
SPECIMENS IN COLLECTIONS. — USNM (59865) (H, P).
REMARK
The type locality registered at USNM is: “Pacific Ocean, Fiji, Suva”, but the geographic coordinates recorded by Stunkard (1962) (18°24’N, 104°38’W) correspond to Mexican Pacific waters. This species was validated by Chisholm & Whittington (2007).
description: Published as part of Mendoza-Garfias, Berenit, García-Prieto, Luis & León, Gerardo Pérez-Ponce De, 2017, Checklist of the Monogenea (Platyhelminthes) parasitic in Mexican aquatic vertebrates, pp. 501-598 in Zoosystema 39 (4) on page 508, DOI: 10.5252/z2017n4a5, http://zenodo.org/record/4578694
Large N Analysis of $T\bar{T}$-deformation and Unavoidable Negative-norm States
Creators: name: Haruna, Junichi
name: Ishii, Takaaki
name: Kawai, Hikaru
name: Sakai, Katsuta
name: Yoshida, Kentaroh
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study non-perturbative quantum aspects of $T\bar{T}$-deformation of a free $O(N)$ vector model by employing the large $N$ limit. It is shown that bound states of the original field appear and inevitably become negative-norm states. In particular, the bound states can be regarded as the states of the conformal mode in a gravitational theory, where the Liouville action is induced with the coefficient proportional to the minus of central charge. To make the theory positive-definite, some modification is required so as to preserve diffeomorphism invariance due to the Faddeev-Popov ghosts with a negative central charge.
description: 1+20 pages, 1 figure
Remarks on the Genesis of Subglacial Channels in Northern Poland
Creators: name: Pasierbski, Michel
Publisher: name: Geozon Science Media
Year: 1979

description: Die Entstehung der meisten subglaziären Rinnentäler sowie ähnlicher Talformen in Nordpolen wird ihrer Eigenschaften wegen (eng, tief, lang und gewunden) allgemein mit der Erosionstätigkeit der subglazialen Wässer in Verbindung gebracht. Der Verfasser zeigt an ausgewählten Beispielen, daß ein Teil dieser Rinnentäler eine mehrfach kombinierte Entstehung aufweist, wobei als Hauptagens schmale und kleine erodierende Eisloben infrage kommen.
description: research
Genetisch—chronologische Studien im nördlichen Bereich des Inn—Chiemseegletschers
Creators: name: Henry, Roderich
name: Rudolph, Norbert
Publisher: name: Geozon Science Media
Year: 1978

description: Aus einer detaillierten geomorphologischen Probekartierung (nach GMK 25) im Jungmoränengebiet nördlich des Chiemsees werden die genetisch-chronologischen Probleme der Vorlandfächer des Inn- und Achen (= Chiemsee-) Gletschers in ihrem nördlichen Kontakt-und Wirkungsbereich vorgestellt. Die Darstellung eines phasenhaften Nieder- und Rückschmelzens der würmzeitlichen Vorlandeismassen bestätigt oder differenziert teilweise die bisherigen Untersuchungen, teilweise werden sie aufgrund der Geländebefunde abgelehnt. Am Schluß sind die wesentlichen Ergebnisse thesenartig zusammengefaßt.
description: research
States as Non-Pirate Actors : A Conceptual History of Piracy
Creators: name: Lockwood, Erin
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 4402
subject: Criminology
subject: FOS: Law
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Description to be added