cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Interaction effects in a multi-channel Fabry-Pérot interferometer in the Aharonov-Bohm regime
Creators: name: Ferraro, D.
name: Sukhorukov, E.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate a Fabry-Pérot interferometer in the integer Hall regime in which only one edge channel is transmitted and n channels are trapped into the interferometer loop. Addressing recent experimental observations, we assume that Coulomb blockade effects are completely suppressed due to screening, while keeping track of a residual strong short range electron-electron interaction between the co-propagating edge channels trapped into the interferometer loop. This kind of interaction can be completely described in the framework of the edge-magnetoplasmon scattering matrix theory allowing us to evaluate the backscattering current and the associated differential conductance as a function of the bias voltage. The remarkable features of these quantities are discussed as a function of the number of trapped channels. The developed formalism reveals very general and provides also a simple way to model the experimentally relevant geometry in which some of the trapped channels are absorbed into an Ohmic contact, leading to energy dissipation.
description: 20 pages (single column), 4 figures
Design and Modeling of a PneuSMA Soft Robotic Catheter Device Using Resistance-Based Modeling of Nitinol Springs
Creators: name: Allen, Emily Ann
Publisher: name: Washington State University
Year: 2022
Subjects: actuator
flexible catheter
nitinol spring
pneumatic
shape-memory alloy
soft robotics

description: The soft robotics paradigm involves constructing robots out of soft materials to improve their safety and ability to interact with humans and delicate objects. Much research has been devoted to this emerging field in recent years as soft robotic devices lend themselves to a variety of applications ranging from wearable rehabilitation devices to biomimetics.
description: Soft, flexible devices show particular promise for medical applications where the ability to perform snake-like manipulations with soft devices could radically improve the safety and effectiveness of endoscopic and intravenous procedures. Where traditional catheter devices for these procedures can only be steered at the tip, there exists a need for more maneuverable devices with a high number of degrees of freedom (DOF) that can be controlled throughout the entire length. These devices would be capable of traversing sharp bends and branches, enabling access to more remote locations while reducing stress on surrounding tissue.
description: Recent efforts have focused primarily on pneumatic- and tendon-driven designs for flexible catheter devices. While these methods offer excellent maneuverability, they require complicated networks of tendons or supply tubes to accommodate individual control of each DOF in each series segment. In this dissertation, a hybrid pneumatic/shape-memory alloy (PneuSMA) actuation strategy is proposed for a flexible catheter device. The PneuSMA actuator is capable of multi-directional bending without requiring separate tendons or pneumatic chambers for each series segment.
description: The PneuSMA actuator design and fabrication method are explained, and a quasi-static analytical model is developed to predict the configuration of the device based on the input pressure and shape-memory alloy (SMA) activation. The PneuSMA analytical model relies on a resistance-based mechanical model for the SMA springs which is developed in this work. The resistance-based nitinol spring model can easily be applied more broadly to other SMA-actuated devices, and experimental results show good agreement between the predicted and experimental curvatures in a single pneuSMA actuator segment, indicating potential for precise control of the PneuSMA catheter device.
"Breve análisis del contrato de trabajo"
Creators: name: González Herazo, Enrique
Publisher: name: Universidad de Cartagena
Year: 1972
Subjects: Contratos

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1972
description: El contrato de trabajo y la relación laboral, son tan importantes por ser complementarios el uno del otro, donde se decide en principio sobre la aplicación de las normas del derecho social sustantivo a un caso determinado.
title: HOW THE EAGLE BLOCKED OUT THE SUN
title: AMERICAN AND JAPANESE AERONAUTICAL ENGINEERING AND AIRCRAFT PRODUCTION DURING WORLD WAR II
titleType: Subtitle
Creators: name: LaPorte, Adam
Publisher: name: Washington State University
Year: 2022
Subjects: subject: Aeronautical Engineering
subject: Aircraft
subject: Pacific War
subject: Production
subject: Japan
subject: United States
subject: Aerospace Engineering
subject: FOS: Mechanical engineering

description: Before Japan’s attack on Pearl Harbor, Japan demonstrated during the Second Sino-Japanese War that its military had developed the best fighter planes in the world. The Zero continued to outperform against Allied aircraft in the early months of the Pacific War. This prompts the fundamental question of this thesis: why did the A6M Zero fail to protect Japanese air superiority if it was so indomitable in the Second Sino-Japanese War and early months of the Pacific War? The answer to this question is threefold. Japan suffered from a dearth of natural resources and less effective administrative organization than its enemies, especially the United States, even before it started the Pacific War. The need for resources was of such paramount importance in Imperial Japan that it guided strategic and diplomatic decision making at the highest level. Consistent attempts were made to better organize Japan’s administrative apparatus, but factional in-fighting continually impeded these efforts. Second, Japan fell behind in aeronautical engineering while the United States and its allies kept progressing. Unreliable engines and mechanical issues plagued late-war Japanese fighter planes while American planes were both reliable and built to last. Third, Japan was unable to keep production of its aircraft and engines comparable to that of its enemies. For instance, 1944 was the most productive year for both the American and Japanese air industries, however the American production values were over triple that of their Japanese counterparts.
Properties of strongly dipolar Bose gases beyond the Born approximation
Creators: name: Ołdziejewski, Rafał
name: Jachymski, Krzysztof
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Strongly dipolar Bose gases can form liquid droplets stabilized by quantum fluctuations. In theoretical description of this phenomenon, low energy scattering amplitude is utilized as an effective potential. We show that for magnetic atoms corrections with respect to Born approximation arise, and derive modified pseudopotential using realistic interaction model. We discuss the resulting changes in collective mode frequencies and droplet stability diagram. Our results are relevant for recent experiments with erbium and dysprosium atoms.
description: slight corrections & extensions
Land Clearing in Eastern North Carolina Chowan-Pasquotank River Basins Study
Creators: name: Ogg, Clayton
name: Heimlich, Ralph
name: Ogg, Clayton
name: Heimlich, Ralph
Publisher: name: Unknown
Year: 1978
Subjects: subject: Land Economics/Use
subject: Research Methods/ Statistical Methods
subject: Resource /Energy Economics and Policy
subject: Overlay
subject: Transition
subject: Habitat
subject: Productivity
subject: Conversion
subject: Clearing

description: Recent land clearing in Eastern North Carolina is identified through a computer based map overlay process. Land use changes are recorded for soil groupings built from the 1967 Conservation Needs Inventory. At the same time, this map overlay technique locates specific forest habitats that are likely to be affected by land use change in the future, while also indicating the extent of future agricultural potential.
description: In cooperation with Virginia Water Control Board and the North Carolina Department of Natural and Economic Resources.
Transitive closure and transitive reduction in bidirected graphs
Creators: name: Bessouf, Ouahiba
name: Khelladi, Abdelkader
name: Zaslavsky, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C22 (Primary), 05C20, 05C38 (Secondary)

description: In a bidirected graph an edge has a direction at each end, so bidirected graphs generalize directed graphs. We generalize the definitions of transitive closure and transitive reduction from directed graphs to bidirected graphs by introducing new notions of bipath and bicircuit that generalize directed paths and cycles. We show how transitive reduction is related to transitive closure and to the matroids of the signed graph corresponding to the bidirected graph.
description: 22 pp., 10 fig. V2: 23 pp. Improved presentation, notation, terminology
Eficacia del láser diodo de 940nm en la eliminación de enterococcus faecalis en conductos radiculares
Creators: name: Calderon Lobo, Michelle Andrea
name: Vergara Higuita, Daniela
Publisher: name: Universidad de Cartagena
Year: 2022
Subjects: subject: Endodoncia
subject: Láseres semiconductores
subject: Pulpa dental - Enfermedades
subject: Raíces dental

description: Enterococcus faecalis es considerado uno de los microorganismos mayormente asociado al fracaso del tratamiento endodóntico debido a su gran capacidad de supervivencia y adaptación a los cambios del medio, esto lo logra gracias a sus múltiples factores de virulencia. Se han propuesto diferentes técnicas con la finalidad de aumentar la reducción de la carga bacteriana en los conductos y así minimizar el riesgo de fracaso. La técnica del láser de diodo ha demostrado tener una gran capacidad bactericida y una mayor penetración en los túbulos dentinales. Objetivo: Determinar la eficacia del láser de diodo de 940nm en la eliminación del Enterococcus faecalis en la desinfección de los conductos radiculares. Método: 63 premolares humanos recién extraídos. fueron asignados al azar a tres subgrupos (n = 21) para evaluar la eficacia antimicrobiana de tres métodos de desinfección contra Enterococcus faecalis (ATCC 29212): 1. Irradiación con láser de diodo de 940nm, 2. Hipoclorito de sodio y 3. Solución salina. El recuento de colonias se informó como unidades formadoras de colonias (UFC) para evaluar la viabilidad bacteriana después de cada protocolo de desinfección. El método modificado de micro dilución en agar fue usado para evaluar el crecimiento bacteriano. Resultados: La eficacia antibacteriana fue significativamente menor contra la biopelícula madura (4 semanas) en comparación con la biopelícula inmadura (4 días) en todos los grupos (P < 0,05). Conclusiones: Los tres métodos de desinfección tuvieron una eliminación parcial del E. faecalis. Pero el método de irrigación con láser de diodo de 940nm significativamente más eficaz, la irrigación con hipoclorito de sodio al 5% aunque redujo significativamente la carga bacteriana no hubo una completa eliminación de las UFC en todos los canales dentales.
Macro Financial Sector Assessment For Cash-Based Transfer Interventions In Ethiopia
Creators: name: Achalu, Zerihun
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Displacements due to conflict along the borders of the regions of Ethiopia together with recurring drought has left millions of the Ethiopian population requiring emergency food assistance. Ethiopia is also hosting hundreds of thousands of refugees from its neighbours. In collaboration with aid agencies, Ethiopia supports its vulnerable population in saving lives with food assistance to empower women, transform areas affected by natural and man-made disasters and keep children in school. Currently, Ethiopia is increasingly combining traditional food assistance with Cash-Based Transfer (CBT). In CBT intervention, the role of Financial Service Providers (FSP) is paramount to reach beneficiaries through cash benefit. Many research works were carried out on cash intervention programmes in Ethiopia. However, much focus has not been given to assess the extent to which the FSP in Ethiopia can support the cash benefit distribution. The financial sector in Ethiopia is emerging and developing in terms of service offer coverage, competition, and technological advancement. In this respect, the country and the humanitarian organizations engaged in CBT may face challenges if their CBT intervention doesn't consider the context of Ethiopia's FSP. The purpose of this Macro Financial Assessment (MaFA) is, therefore, to assess the country's financial capacity to support cash based transfer programme in the country. The study adopted descriptive research type and involved collection of secondary data through guidance by the World Bank's Financial Sector Assessment, the Bank of International Settlement, the International Monetary Fund (IMF) and the Global Partnership for Financial Inclusion (GPFI). The focus of the assessments are: Government Supervision, Ease of Entry, Competition, Consumer Protection, and Financial Inclusion. The assessment results showed that government supervision scored the highest; competition and consumer protection scored medium while ease of entry and financial inclusions resulted in low scoring. Overall, based on the information currently available and highlighted in this report, Ethiopia is given Medium score indicating the sector's feasibility for CBI. Based on the present study, it is recommended that the CBI in the country need to start from small to medium scale with subsequent expansion to the large scale on gaining experience and lessons.
title: Merkmale und Besonderheiten mathematisch potentiell begabter Grundschüler
title: aktuelle Forschungsergebnisse
titleType: AlternativeTitle
Creators: name: Aßmus, Daniela
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2007
Subjects: subject: 510

description: Da sich bisherige Forschungen zu Merkmalen und Besonderheiten mathematisch potentiell begabter Grundschüler hauptsächlich auf Kinder der dritten und vierten Grundschulklassen konzentrieren, liegen für jüngere Kinder zu diesem Thema kaum wissenschaftliche Erkenntnisse vor. Das hier vorgestellte Forschungsprojekt, in dem spezifische Merkmale mathematisch begabter Zweitklässler herausgearbeitet und in einer umfangreichen Untersuchung überprüft wurden, soll einen Beitrag zur Beseitigung dieses Defizits leisten.
La reforma agraria en Colombia y su incidencia sobre el desarrollo del sector agropecuario en Bolívar (1989 -1997).
Creators: name: Gomez Batista, Luis Fernando
name: Perez Saenz, Ricardo
Publisher: name: Universidad De Cartagena
Year: 2000
Subjects: Reforma agraria - Colombia

description: Tesis (Economista). -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 2000.
description: El presente estudio tiene por objeto determinar y analizar la incidencia de las políticas y modelos macroeconomicos (apertura y sustitución de importaciones en el sector agropecuario del departamento).
Experimental realization of a Dirac monopole through the decay of an isolated monopole
Creators: name: Ollikainen, T.
name: Tiurev, K.
name: Blinova, A.
name: Lee, W.
name: Hall, D. S.
name: Möttönen, M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We experimentally observe the decay dynamics of deterministically created isolated monopoles in spin-1 Bose-Einstein condensates. As the condensate undergoes a change between magnetic phases, the isolated monopole gradually evolves into a spin configuration hosting a Dirac monopole in its synthetic magnetic field. We characterize in detail the Dirac monopole by measuring the particle densities of the spin states projected along different quantization axes. Importantly, we observe the spontaneous emergence of nodal lines in the condensate density that accompany the Dirac monopole. We also demonstrate that the monopole decay accelerates in weaker magnetic field gradients.
description: 10 pages, 7 figures
Plan vial del municipio de Santa Rosa de Lima
Creators: name: Montalvo Navarro, Alfonso
name: Perez Marcelo, Cupertino Manuel
Publisher: name: Universidad de Cartagena
Year: 2007
Subjects: Capacidad de carreteras
Calles - Santa rosa de lima - Bolivar
Carreteras - Capacidad de trafico
Transporte

description: Tesis (Ingeniero Civil) -- Universidad de Cartagena. Facultad de Ciencias Económicas E Ingeniería. Programa de Ingeniería Civil. 2007.
description: El presente estudio tiene por objeto elaborar un plan vial para el municipio de Santa Rosa de Lima que permita organizar, clasificar y priorizar el estado de la infraestructura vial, proyectado para un periodo de 8 años, teniendo en cuenta los parámetros establecidos en el esquema de ordenamiento territorial del municipio y sus condiciones de desarrollo social y económico.
A global perspective to connections on principal 2-bundles
Creators: name: Waldorf, Konrad
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: For a strict Lie 2-group, we develop a notion of Lie 2-algebra-valued differential forms on Lie groupoids, furnishing a differential graded-commutative Lie algebra equipped with an adjoint action of the Lie 2-group and a pullback operation along Morita equivalences between Lie groupoids. Using this notion, we define connections on principal 2-bundles as Lie 2-algebra-valued 1-forms on the total space Lie groupoid of the 2-bundle, satisfying a condition in complete analogy to connections on ordinary principal bundles. We carefully treat various notions of curvature, and prove a classification result by the non-abelian differential cohomology of Breen-Messing. This provides a consistent, global perspective to higher gauge theory.
description: 42 pages. v2 comes with an additional lemma (2.2.5) about the pullback along a rank one map, and an additional section (5.4) providing a more thorough discussion of trivial bundles
Discrimination between quarry blasts and micro-earthquakes using spectral analysis, applied to local Israeli events
Creators: name: Postema, Michiel
Publisher: name: Zenodo
Year: 1996
Subjects: cepstral analysis
seismology
ripple firing detection

description: MSc Dissertation
description: {"references": ["B\u00e5th M. Spectral analysis in geophysics, p. 53, Elsevier, Amsterdam 1974.", "van den Berg AP, Neele FP. Geofyische dataverwerking. Utrecht 1993.", "Dobrin MB, Cavit CH. Introduction to geophysical prospecting, 4th ed, pp. 174-183, McGraw-Hill, Singapore 1988.", "van Eck T. Nuclear test ban treaty verification: relevant seismological research topics for Israel. Report to the IAEC, preliminary version (95A01), Utrecht 1995.", "Gitterman Y, van Eck T. Spectra of quarry blasts and microearthquakes recorded at local distances in Israel. Bull Seism Soc Am 83, pp. 1799-1812, 1993.", "Hedlin MAH, Minster JB, Orcutt JA. The time--freqency characteristics of quarry blasts and calibration explosions recorded in Kazakhstan, USSR. Geophys J Int 99, pp. 109-121, 1989.", "Hedlin MAH, Minster JB, Orcutt JA. An automatic means to discriminate between earthquakes and quarry blasts. Bull Seism Soc Am 80, pp. 2143-2160, 1990.", "Kanasewich ER. Time sequence analysis in geophysics. University of Alberta Press, Edmonton, 1973.", "Oppenheim AV. Generalized linear filtering. In: Gold B, Rader CM. Digital processing of signals. pp. 233-262, McGraw-Hill, 1969.", "Oppenheim AV, Schafer RW. Digital signal processing. pp. 480-531, Prentice-Hall, Englewood Cliffs, 1975.", "Press WH, Teukolsky SH, Vetterling WT, Flannery BP. Numerical recipes in FORTRAN: the art of scientific computing. Campridge University Press, 1992.", "Rabinowitz N, Joswig M. Detection, localizition and identification of local seismic events by a small array in Israel. Scientific progress report, submitted to the German-Israel Foundation for Scientific Research & Development, Israel/Germany 1995.", "Smith AT. Discrimination of explosions from simultaneous mining blasts. Bull Seism soc Am 83, pp. 160-179, 1993.", "Stump BW. Nuclear explosion seismology: verification, source theory, wave propagation and politics. U.S. National Report to International Union of Geodesy and Geophysics 1987-1990. Reviews of Geopysics, supplement, pp. 734-741, 1991.", "W\u00fcster J. Discrimination of chemical explosions and earthquakes in central Europe -- a case study. Bull Seism Soc Am 83, pp. 1184-1212, 1993.", "W\u00fcster J. Diskrimination von Erdbeben und Sprengungen im Vogtland und Nordwest-B\u00f6hmen. Berichte des Instituts f\u00fcr Geophysik der Ruhr-Universit\u00e4t Bochum, Reihe A, Nr. 42, Civillier Verlag, G\u00f6ttingen 1996."]}
Sprachsensibler Mathematikunterricht an Hauptschulen
Creators: name: Fast, Viktor
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Wann und wie genau stellt Sprache im MU ein Lernhindernis dar? Mit dieser Frage beschäftigt sich die Mathematikdidaktik seit ihrer Entstehung (Prediger 2013). Ein Überblick über die reiche Forschungsgeschichte findet sich beispielsweise bei Meier und Schwieger (1999). Im deutschsprachigen Raum hat sich als einer der ersten Josef Leisen als praktizierender Lehrer an deutschen Schulen im Ausland mit der Herausforderung der Mehrsprachigkeit bei Schülerinnen und Schülern beschäftigt. In diesem Zusammenhang wurden von ihm verschiedene Aufgabentypen und Methoden für den Unterricht entwickelt sowie Lehrerhandreichungen für die Sensibilisierung von Lehrerinnen und Lehrern auf der Basis eigener Erfahrungen verfasst. Diesem Feld der mehrsprachig aufwachsenden Schülerinnen und Schüler widmet sich die deutsche Fachdidaktik mit zunehmender Intensität. Ein sehr bekanntes und großes Forschungsprojekt zu dieser Thematik ist das von Susanne Prediger geleitete MuM-Projekt (Mathematiklernen unter Bedingungen der Mehrsprachigkeit), das die Herausforderungen der Mehrsprachigkeit aus verschiedenen Perspektiven beleuchtet.
Diagnostico al municipio de San Bernardo del Viento, Córdoba
Creators: name: Alarcon Afiuni, Betty
name: Jimenez O., Claudia Patricia
Publisher: name: Universidad de Cartagena
Year: 1994
Subjects: San Bernardo del Viento - Aspectos socio económicos

description: Tesis (Economista) -- Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía, 1994.
description: El presente estudio tiene por objeto recopilar, organizar, presentar y analizar la información para realizar un diagnostico general de vida de la población, centrando la investigación en los sectores económicos del municipio y determinar así sus problemas, necesidades tendencia y nivel de desarrollo, para poder recomendar aspectos de importancia en los planes de desarrollo municipal.
Discrimination between quarry blasts and micro-earthquakes using spectral analysis, applied to local Israeli events
Creators: name: Postema, Michiel
Publisher: name: Zenodo
Year: 1996
Subjects: cepstral analysis
seismology
ripple firing detection

description: Dissertation
description: {"references": ["B\u00e5th M. Spectral analysis in geophysics, p. 53, Elsevier, Amsterdam 1974.", "van den Berg AP, Neele FP. Geofyische dataverwerking. Utrecht 1993.", "Dobrin MB, Cavit CH. Introduction to geophysical prospecting, 4th ed, pp. 174-183, McGraw-Hill, Singapore 1988.", "van Eck T. Nuclear test ban treaty verification: relevant seismological research topics for Israel. Report to the IAEC, preliminary version (95A01), Utrecht 1995.", "Gitterman Y, van Eck T. Spectra of quarry blasts and microearthquakes recorded at local distances in Israel. Bull Seism Soc Am 83, pp. 1799-1812, 1993.", "Hedlin MAH, Minster JB, Orcutt JA. The time--freqency characteristics of quarry blasts and calibration explosions recorded in Kazakhstan, USSR. Geophys J Int 99, pp. 109-121, 1989.", "Hedlin MAH, Minster JB, Orcutt JA. An automatic means to discriminate between earthquakes and quarry blasts. Bull Seism Soc Am 80, pp. 2143-2160, 1990.", "Kanasewich ER. Time sequence analysis in geophysics. University of Alberta Press, Edmonton, 1973.", "Oppenheim AV. Generalized linear filtering. In: Gold B, Rader CM. Digital processing of signals. pp. 233-262, McGraw-Hill, 1969.", "Oppenheim AV, Schafer RW. Digital signal processing. pp. 480-531, Prentice-Hall, Englewood Cliffs, 1975.", "Press WH, Teukolsky SH, Vetterling WT, Flannery BP. Numerical recipes in FORTRAN: the art of scientific computing. Campridge University Press, 1992.", "Rabinowitz N, Joswig M. Detection, localizition and identification of local seismic events by a small array in Israel. Scientific progress report, submitted to the German-Israel Foundation for Scientific Research & Development, Israel/Germany 1995.", "Smith AT. Discrimination of explosions from simultaneous mining blasts. Bull Seism soc Am 83, pp. 160-179, 1993.", "Stump BW. Nuclear explosion seismology: verification, source theory, wave propagation and politics. U.S. National Report to International Union of Geodesy and Geophysics 1987-1990. Reviews of Geopysics, supplement, pp. 734-741, 1991.", "W\u00fcster J. Discrimination of chemical explosions and earthquakes in central Europe -- a case study. Bull Seism Soc Am 83, pp. 1184-1212, 1993.", "W\u00fcster J. Diskrimination von Erdbeben und Sprengungen im Vogtland und Nordwest-B\u00f6hmen. Berichte des Instituts f\u00fcr Geophysik der Ruhr-Universit\u00e4t Bochum, Reihe A, Nr. 42, Civillier Verlag, G\u00f6ttingen 1996."]}
Y-system for $γ$-deformed ABJM Theory
Creators: name: Chen, Hui-Huang
name: Liu, Peng
name: Wu, Jun-Bao
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the integrable aspects of the planar $γ$-deformed ABJM theory and propose the twisted asymptotic Bethe ansatz equations. A more general method through a twisted generating functional is discussed, based on which, the asymptotic large L solution of Y-system is modified in order to match the asymptotic Bethe ansatz equations. Several applications of our method were made in the $sl(2)$-like sector and some important examples in $β$-deformed ABJM are presented as well.
description: 26 pages, 1 figure
Local quantum theory with fluids in space-time: Supplemental Information
Creators: name: Waegell, Mordecai
Publisher: name: Zenodo
Year: 2023

description: This SI contains detailed examples of the local quantum fluid treatment of Wigner's Friend, interference and Wheeler's delayed choice, delayed choice quantum erasure, and quantum teleportation, along with some related discussion. It is recommended that the examples in the SI be used as a resource while reading the main article to help develop the right intuition for the local treatment.
Project Execution Challenges and Means of Resolution (The case of MSF Holland Project in Gambella– Kule Refugee Camp)
Creators: name: Tadesse, Wubeshet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The topic of the study is 'Project Execution Challenges and Means of Resolution- The case of MSF Holland Project in Gambella-Kule project. The main objective of the study is to describe the practice of project execution in MSF Holland project in Gambella-Kule project and pin point challenges during the process and finally provide recommendation to address the gap. The study has met its objectives through providing answers for the basic questions of identifying the challenges of the project and recommending possible means of resolution for successful execution of the project. The scope of the study is delimited in the area of project execution opportunities, challenges, means of resolution in the project. The research is bounded by time, the design used is exploratory and descriptive type (mixed), with both qualitative and quantitative methods employed. The sampling technique is purposive, both primary and secondary data were collected for the accomplishment of the study through semi-structured interview; open ended questionnaire and document analysis. The informants are project medical staff, project coordinators and project support staff. The analysis is done qualitatively by relating the results with literatures. The main findings are the identification of major challenges during project execution of the MSF H Gambella-Kule project with people readiness, process readiness, system readiness, communication challenges, budgetary challenges and planning challenges. From the finding one can see the major challenges of project execution in terms of severity of the challenges. Consequently, the study recommends MSF H Gambella-Kule project should work on these challenges to lessen the impact of the project execution thereby scaling up the level of effectiveness and efficiency of the project to the satisfaction of its beneficiaries and other stakeholders in general
Decomposition rules for the ring of representations of non-Archimedean $GL_n$
Creators: name: Gurevich, Maxim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Representation Theory (math.RT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 20G25, 22E50

description: Let $\mathcal{R}$ be the Grothendieck ring of complex smooth finite-length representations of the sequence of p-adic groups $\{GL_n(F)\}_{n=0}^\infty$, with multiplication defined through parabolic induction. We study the problem of the decomposition of products of irreducible representations in $\mathcal{R}$. We obtain a necessary condition on irreducible factors of a given product by introducing a width invariant. Width $1$ representations form the previously studied class of ladder representations. We later focus on the case of a product of two ladder representations, for which we establish that all irreducible factors appear with multiplicity one. Finally, we propose a general rule for the composition series of a product of two ladder representations and prove its validity for cases in which the irreducible factors correspond to smooth Schubert varieties.
description: 33 pages, contains the results of the previous note arXiv:1604.07333
Coarse-graining strategy for molecular pair interactions: A reaction coordinate study for two- and three-dimensional systems
Creators: name: Heinemann, Thomas
name: Klapp, Sabine H. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate and provide optimal sets of reaction coordinates for mixed pairs of molecules displaying polar, uniaxial, or spherical symmetry in two and three dimensions. These coordinates are non-redundant, i.e., they implicitly involve the molecules' symmetries. By tabulating pair interactions in these coordinates, resulting tables are thus minimal in length and require a minimal memory space. The intended fields of application are computer simulations of large ensembles of molecules or colloids with rather complex interactions in a fluid or liquid crystalline phase at low densities. Using effective interactions directly in the form of tables can help bridging the time and length scales without introducing errors stemming from any modeling procedure. Finally, we outline an exemplary computational methodology for gaining an effective pair potential in these coordinates, based on the Boltzmann inversion principle, by providing a step-by-step recipe.
description: 29 pages, 7 figures
Das Lehrerprofessionswissen von Mathematiklehrkräften der Sekundarstufe I im Bereich der Beschreibenden Statistik („BeSt Teacher“)
Creators: name: Schumacher, Stefanie
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Innerhalb der letzten Jahre konnte eine Veränderung in Bezug auf die Relevanz von Statistik in Schulen beobachtet werden. In Deutschland kam es mit der Einführung der Bildungsstandards zu einer größeren Wertschätzung des Bereichs „Daten und Zufall“, der als eine von fünf zentralen Leitideen herausgestellt wurde. Statistik ist somit ein wichtiger, aber trotz alledem häufig vernachlässigter Bereich mathematischer Bildung in der Schule. Auch das Wissen von Lehrkräften bezüglich dieser Thematik ist nicht zufriedenstellend: „[...] the teachers generally have [...] little knowledge about statistics“ (Batanero et al. 2011, S.12). Die Ursachen dafür können unter anderem in der vormals vernachlässigten Rolle im Unterrichtskontext oder auch in der defizitären Berücksichtigung des Themengebiets in der Ausbildung der Lehrkräfte vermutet werden. Ziel des hier vorgestellten Forschungsvorhabens „BeSt Teacher“ ist es, das Professionswissen von Mathematiklehrkräften der Sekundarstufe I im Bereich der Beschreibenden Statistik mit Hilfe eines selbst konzipierten Testinstruments zu erfassen. Dabei werden zwei zentrale Fragen verfolgt: (1) In welchem Maße verfügen Lehrkräfte über schulbezogenes Wissen im Bereich der Beschreibenden Statistik? (2) Auf welche Art und Weise vermitteln Lehrkräfte ihr Wissen und über welches Wissen von typischen Schülerfehlern und -schwierigkeiten verfügen sie?
Del abuso del derecho
Creators: name: Hernández Ayazo, Herath
Publisher: name: Universidad de Cartagena
Year: 1971
Subjects: Derecho - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1971
description: Existe abuso del derecho cuando en una determinada actuación u omisión de una persona, cuando obedece a un ejercicio culposo o doloso del derecho, o cuando resulta desviada del objeto y finalidad que la ley establece para dicho derecho, y cuyo ejercicio vulnera derechos de terceros.
Use of Applied Economics in the Arkansas-White-Red Cooperative River Basin Study
Creators: name: Dickason, Clifford
name: Dickason, Clifford
Publisher: name: Unknown
Year: 1978
Subjects: Community/Rural/Urban Development
Crop Production/Industries
Environmental Economics and Policy
Labor and Human Capital
Land Economics/Use
Livestock Production/Industries
Productivity Analysis
Research Methods/ Statistical Methods
Resource /Energy Economics and Policy

description: Excerpts from the report: The AWR Basin area is 11,300,000 acres (17,800 sq.mi.). The Basin is located in the northeast corner of the State. It is bounded on the north by Colorado, and on the east by Oklahoma and Texas. The Basin includes all of Union, Colfax, Mora, and Harding Counties, but only part of San Miguel, Quay, Curry, and Guadalupe Counties. The principal drainages are the Cimarron and Canadian Rivers and their tributaries. Land ownership is about 85 percent private, 13 percent State land, and 2 percent Federal. About 70 percent of the land is range land used primarily for grazing beef cattle, 11 percent is commercial forest, 11 percent is other woodlands, 6 percent if cropland, and 2 percent is in roads, cities and towns, and miscellaneous uses. The objectives of the Arkansas-White-Red Cooperative Basin Study were: (1) To identify present and impending problems pertaining to natural resource supply and quality, particularly as they affect agricultural production, farm revenues, and income and employment in agriculture and service industries. (2) To examine U.S. Department of Agriculture program potentials for overcoming natural-resource-related problems. This included estimating the economic and environmental effects of various potential program measures. The economic analysis described here centered mainly on projecting future economic conditions in the event that USDA programs remain at their status quo level of intensity, and also on projecting future economic effects produced by potential increases in the intensity of programs.
description: The Arkansas-White-Red Cooperative River Basin Study was basically an inquiry into the condition and supply of natural resources in the AWR Basin with the intention of uncovering shortages, impending shortages, or deterioration, of natural resources that may result in a lessening of economic, environmental, or social well-being of AWR residents and residents outside of the Basin. The AWR-CRBS was made at the request of State officials representing the citizens of New Mexico. Main participants in this study were: (1) the New Mexico State Engineer Office (SEO), a principal water regulating agency representing the citizens of the State and of the AWR region; (2) the U.S. Soil Conservation Service (SCS) ; (3) the U.S. Forest Service (FS); and (4) the Economics, Statistics, and Cooperatives Service (ESCS). The latter three agencies are parts of the U.S. Department of Agriculture (USDA).
Infinitely many reducts of homogeneous structures
Creators: name: Bodor, Bertalan
name: Cameron, Peter J.
name: Szabó, Csaba
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic (math.LO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 03C15

description: It is shown that the countably infinite dimensional pointed vector space (the vector space equipped with a constant) over a finite field has infinitely many first order definable reducts. This implies that the countable homogeneous Boolean-algebra has infinitely many reducts. Our construction over the 2-element field is related to the Reed--Muller codes.
Estudio de la composición química y poder calórico de la fracción organica de los residuos sólidos de los Barrios Villa Hermosa, Sector La Puntilla de Olaya, Petare, San Francisco y el Corregimiento de la Boquilla de la Ciudad de Cartagena
Creators: name: Pedroza Simancas, Richard
name: Vasquez Salas, Gustavo
Publisher: name: Universidad de Cartagena
Year: 2004
Subjects: Productos de residuos
Residuos sólidos
Basuras y aprovechamiento de basuras

description: Tesis (Ingeniero Civil). - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil, 2004.
description: El presente estudio tiene por objeto determinar la composición química y el poder calorico de la materia orgánica biodegradable de los residuos sólidos de los barrios Villa Hermosa, sector La Puntilla de Olaya, Petare, San Francisco y el corregimiento de la Boquilla de la Ciudad de Cartagena.
Challenges Of Project Procurement And Contract Administration: The Case Of Optimal Traffic Routing Automation Project, Ethio Telecom
Creators: name: Teklu, Helen
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The purpose of this study is to examine how scope/specification development and involvement of concerned stakeholders in the planning stage of the project procurement management process of an Optimal traffic routing automation project at Ethio Telecom affect the performance of the project. Descriptive research design was employed for the study. Semi-structured interview with purposive sampling technique was conducted with five management staffs of the sourcing department of the company. Close ended questionnaire was distributed to thirty-five employees where thirty-two are completed and returned. The data collected through questionnaire has been analyzed quantitatively using descriptive statistics; mean and standard deviation of SPSS version 20.00 software. And, the data obtained using interviews has been analyzed qualitatively. The study focused on the project procurement management practice of optimal traffic routing automation project undertaken by the company in order to improve the performance of voice traffic quality and take advantage of the cost involved for each call routing. The study examines the project considering plan procurement management, conduct procurements and control procurements processes of the project procurement management knowledge area. Contract administration practice of the project was also observed in the study. Accordingly, the findings showed that, scope and specifications for the project were not properly prepared, concerned stakeholders were not involved, risk related to the project was not considered, cost, schedule and detail requirements documents were not properly developed in the planning stage which in turn affects the conduct and control processes. Besides, no regular training is being provided to both sourcing and procurement requesting unit staffs, there is a skill gap that needs to be filled to improve the project procurement management process. Thus, planning should be given due consideration, and regular training must be provided on project procurement and contract administration related issues to all concerned staffs of the company.
On the Kauffman-Jones polynomial for virtual singular links
Creators: name: Caprau, Carmen
name: Friesen, Kelsey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57M27, 57M25

description: We extend the Kamada-Miyazawa polynomial to virtual singular links, which is valued in $\mathbb{Z}[A^2, A^{-2}, h]$. The decomposition of the resulting polynomial into two components, one in $\mathbb{Z}[A^2, A^{-2}]$ and the other in $\mathbb{Z}[A^2, A^{-2}]h$ yields the decomposition of the Kauffman-Jones polynomial of virtual singular links into two components, one in $\mathbb{Z}[A^2, A^{-2}]$ and the other in $\mathbb{Z}[A^2, A^{-2}]A^2$, where both components are invariants for virtual singular links.
description: 20 pages; typos corrected
Sistematización de la metodología utilizada en el programa de formación y de desarrollo humano del convenio entre la fundación instituto para la construcción de la paz Finconpaz y el seminario mayor San Carlos Borromeo
Creators: name: Benjumea Manjarres, Fabiana Thays
Publisher: name: Universidad de Cartagena
Year: 2002
Subjects: Talento y condición social
Trabajo social - Casos

description: Tesis (Trabajadora Social) -- Universidad de Cartagena. Facultad de ciencias sociales y educación. Programa de trabajo social, 2002
description: Referencia al objeto de la sistematización, los antecedentes de esta, el concepto de sistematización utilizado y el marco de referencia teórico conceptual, permitiendo la reflexión y recuperación de la misma.
Distribución del crédito en Colombia por sectores económicos periodo 1980-1984
Creators: name: Zuñiga Escobar, Ruperto
name: Gonzalez Gonzalez, Diogenes
Publisher: name: Universidad de Cartagena
Year: 1986
Subjects: Crédito
Bancos
Crédito comercial

description: Tesis (Economista).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Economía.
description: El presente estudio tiene por objeto demostrar que el crédito en colombia, esta distribuido en una forma desigual entre los diferentes sectores y ramas productivos y que este inciden negativamente en el desarrollo global de la economia del pais.
The Effect of Anxiolytic Strategies on Writing Apprehension and Writing Performance
Creators: name: Qadir, Sarkawt Muhammad
Publisher: name: figshare
Year: 2022
Subjects: subject: 200303 English as a Second Language
subject: FOS: Languages and literature

description: One basic negative second most talked about emotion that affects second language acquisition involves anxiety. Previous research has tackled foreign language writing anxiety in most educational contexts, probing into the levels, categories, causes, consequences and strategies. Nevertheless, no detailed research is seen to have dealt with writing apprehension of Kurdish university students, particularly with regard to in-class interventions. For this purpose, the present study endeavoured to tackle the effectiveness of sundry anxiety-reducing strategies on writing apprehension and writing performance in an English writing course lasting twelve weeks among second year undergraduate students. The level, categories, and causes of writing apprehension were first identified and then students’ writing performance was measured through both analytic scoring and error analysis. The study further aimed at identifying sundry correlations among the variables of the study. To this end, the study utilized a quasi-experimental design to answer the research questions addressed. Data were collected from 39 participants through two questionnaires, an essay writing test, teacher’s diary, and instructor observation. The results disclosed that although the students experienced a moderate level of writing apprehension in the pretest and posttest, a substantial decrease in writing apprehension was observed in the posttest. As for the categories, cognitive writing anxiety, being the most common category in the pretest, was the sole category that significantly decreased. However, no statistically significant decreases occurred in the causes of writing apprehension. The study further revealed that students wrote much longer essays and outperformed in the posttest. Certain correlations, though weak, were also observed between the variables of the study.
Scattering and bound states of Dirac Equation in presence of cosmic string for Hulthén potential
Creators: name: Hosseinpour, Mansoureh
name: Andrade, Fabiano M.
name: Silva, Edilberto O.
name: Hassanabadi, Hassan
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study the Dirac equation with vector and scalar potentials in the spacetime generated by a cosmic string. Using an approximation for the centrifugal term, a solution for the radial differential equation is obtained. We consider the scattering states under the Hulthén potential and obtain the phase shifts. From the poles of the scattering $S$-matrix the states energies are determined as well.
description: 6 pages, no figures, v2: some parts of the text were rewritten, matches published version
Peanut Production Practices and Costs in Alabama and Georgia
Creators: name: McArthur, W. C.
name: Krenz, R. D.
name: Garst, G. D.
name: Micheel, C. C.
name: Fawcett, D. L.
name: McArthur, W. C.
name: Krenz, R. D.
name: Garst, G. D.
name: Micheel, C. C.
name: Fawcett, D. L.
Publisher: name: Unknown
Year: 1979
Subjects: Agricultural and Food Policy
Crop Production/Industries
Labor and Human Capital
Land Economics/Use
Production Economics
Productivity Analysis
Resource /Energy Economics and Policy

description: Report Introduction: In 1973, the Congress of the United States passed Public Law 93-86, the Agricultural and Consumer Protection Act of 1973. This law directed the Secretary of Agriculture to conduct cost of production studies on wheat, feed grains, cotton and dairy products. In response to this directive, the first surveys of cost of production were conducted in 1975. In 1978, an additional survey of peanut producers was conducted in six states including Alabama, Georgia, North Carolina, Oklahoma, Texas and Virginia. This survey obtained data on practices used by farmers in regard to seeding, fertilizing, chemicals, machinery use, and other practices in peanut production. This report presents data on production practices and the resulting cost of production for peanuts in Alabama and Georgia. The results for the other four states are available in separate reports.