cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Data Mining for Three-Dimensional Organic Dirac Materials: Focus on Space Group 19
Creators: name: Geilhufe, R. Matthias
name: Borysov, Stanislav S.
name: Bouhon, Adrien
name: Balatsky, Alexander V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We combined the group theory and data mining approach within the Organic Materials Database that leads to the prediction of stable Dirac-point nodes within the electronic band structure of 3-dimensional organic crystals. We find a particular space group $P2_12_12_1$ ($\#19$) that is conducive to the Dirac nodes formation. We prove that nodes are a consequence of the orthorhombic crystal structure. Within the electronic band structure, two different kinds of nodes can be distinguished: 8-fold degenerate Dirac nodes protected by the crystalline symmetry and 4-fold degenerate Dirac nodes protected by band topology. Mining the Organic Materials Database, we present band structure calculations and symmetry analysis for 6 previously synthesized organic materials. In all these materials, the Dirac nodes are well separated within the energy and located near the Fermi surface, which opens up a possibility for their direct experimental observation.
description: 8 pages, 4 figures, 2 Tables
On quantum additive Gaussian noise channels
Creators: name: Idel, Martin
name: Koenig, Robert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give necessary and sufficient conditions for a Gaussian quantum channel to have a dilation involving a passive, i.e., number-preserving unitary. We then establish a normal form of such channels: any passively dilatable channel is the result of applying passive unitaries to the input and output of a Gaussian additive channel. The latter combine the state of the system with that of the environment by means of a multi-mode beamsplitter.
description: 20 pages, 1 figure, updated to match published version
Semigroups of isometries of the hyperbolic plane
Creators: name: Jacques, Matthew
name: Short, Ian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Metric Geometry (math.MG)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 30D05, 30F35, 30F45

description: Motivated by a problem on the dynamics of compositions of plane hyperbolic isometries, we prove several fundamental results on semigroups of isometries, thought of as real Möbius transformations. We define a semigroup $S$ of Möbius transformations to be \emph{semidiscrete} if the identity transformation is not an accumulation point of $S$. We say that $S$ is \emph{inverse free} if it does not contain the identity element. One of our main results states that if $S$ is a semigroup generated by some finite collection $\mathcal{F}$ of Möbius transformations, then $S$ is semidiscrete and inverse free if and only if every sequence of the form $F_n=f_1\dotsb f_n$, where $f_n\in\mathcal{F}$, converges pointwise on the upper half-plane to a point on the ideal boundary, where convergence is with respect to the chordal metric on the extended complex plane. We fully classify all two-generator semidiscrete semigroups, and include a version of Jørgensen's inequality for semigroups. We also prove theorems that have familiar counterparts in the theory of Fuchsian groups. For instance, we prove that every semigroup is one of four standard types: elementary, semidiscrete, dense in the Möbius group, or composed of transformations that fix some nontrivial subinterval of the extended real line. As a consequence of this theorem, we prove that, with certain minor exceptions, a finitely-generated semigroup $S$ is semidiscrete if and only if every two-generator semigroup contained in $S$ is semidiscrete. After this we examine the relationship between the size of the `group part' of a semigroup and the intersection of its forward and backward limit sets. In particular, we prove that if $S$ is a finitely-generated nonelementary semigroup, then $S$ is a group if and only if its two limit sets are equal. We finish by applying some of our methods to address an open question of Yoccoz.
description: 41 pages, 5 figures
MATERIALMENTE... Vem Descobrir os Materiais
Creators: name: Mascarenhas, João
Publisher: name: Zenodo
Year: 2023
Subjects: Materials, Metals, Ceramics, Polymers

description: Comic Book with the experiments of the Material's exhibition premiered in 1997 (still on), with Metals, Polymers and Ceramics, held at Instituto Pedro Nunes, in Coimbra, Portugal, to be delivered to the young visitors.
Final Results of the PICASSO Dark Matter Search Experiment
Creators: name: Behnke, E.
name: Besnier, M.
name: Bhattacharjee, P.
name: Dai, X.
name: Das, M.
name: Davour, A.
name: Debris, F.
name: Dhungana, N.
name: Farine, J.
name: Fines-Neuschild, M.
name: Gagnebin, S.
name: Giroux, G.
name: Grace, E.
name: Jackson, C. M.
name: Kamaha, A.
name: Krauss, C. B.
name: Lafrenière, M.
name: Laurin, M.
name: Lawson, I.
name: Lessard, L.
name: Levine, I.
name: Marlisov, D.
name: Martin, J. -P.
name: Mitra, P.
name: Noble, A. J.
name: Plante, A.
name: Podviyanuk, R.
name: Pospisil, S.
name: Scallon, O.
name: Seth, S.
name: Starinski, N.
name: Stekl, I.
name: Wichoski, U.
name: Zacek, V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The PICASSO dark matter search experiment operated an array of 32 superheated droplet detectors containing 3.0 kg of C$_{4}$F$_{10}$ and collected an exposure of 231.4 kgd at SNOLAB between March 2012 and January 2014. We report on the final results of this experiment which includes for the first time the complete data set and improved analysis techniques including \mbox{acoustic} localization to allow fiducialization and removal of higher activity regions within the detectors. No signal consistent with dark matter was observed. We set limits for spin-dependent interactions on protons of $σ_p^{SD}$~=~1.32~$\times$~10$^{-2}$~pb (90\%~C.L.) at a WIMP mass of 20 GeV/c$^{2}$. In the spin-independent sector we exclude cross sections larger than $σ_p^{SI}$~=~4.86~$\times$~10$^{-5 }$~pb~(90\% C.L.) in the region around 7 GeV/c$^{2}$. The pioneering efforts of the PICASSO experiment have paved the way forward for a next generation detector incorporating much of this technology and experience into larger mass bubble chambers.
description: 24 pages, 7 figures
Integrating computing through physical activity in elementary school classrooms
Creators: name: Fritz, Connor Douglas
name: 0000-0002-4112-5147
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Computer science education
Serious games
Pervasive computing
Physical education

description: Most children in the US fail to achieve the recommended daily amount of physical activity. This can have deleterious effects on children’s health and academic performance, yet physical education is an often-neglected component of elementary school curricula. Similarly, there is little emphasis on improving computer science knowledge and computational thinking skills in elementary students despite the increasing relevance of computer science. Two initiatives – Project moveSMART and the Sensory Motor Lab – aim to explore and address these issues. Project moveSMART is a collaborative online game made to improve elementary students’ physical activity levels, academic achievement, and computational thinking skills. Students log their physical activity levels to advance through the game, during which they unlock educational content. Much of this content is composed of the moveSMART curriculum, which consists of a series of tutorials that promote physical activity, computational thinking, and learning related to state standards. Project moveSMART was developed as a collaboration between researchers and educators at Hornsby Dunlap Elementary School. A similar collaboration resulted in the development of the Sensory Motor Lab- a space in which students can do physical activities intended to help develop sensorimotor skills. The Sensory Motor Lab consists of ten stations and a system for recording student utilization of the lab for later analysis. This thesis describes Project moveSMART, the moveSMART curriculum, and the Sensory Motor Lab by detailing information relevant to the future users and developers of these projects. We also describe a pilot deployment performed during the Spring of 2021 in which 4th and 5th grade students completed activities from the moveSMART curriculum delivered through the Project moveSMART web application. 4th grade students were familiar with the web application and completed more of the curriculum, while 5th grade students were not familiar with the application and completed a relatively small proportion of the curriculum. We found that 4th grade students had a significantly improved confidence in their coding abilities and perception of coders after the intervention, while 5th grade students did not. This thesis ends by discussing lessons learned from the pilot study, and by making recommendations for future work.
Determinación de la influencia de la recarga por precipitación en el desplazamiento de la cuña salina de un acuífero costero piloto utilizando el software Sutra
Creators: name: Mieles Montenegro, Mónica Marcela
Publisher: name: Universidad de Cartagena
Year: 2021
Subjects: Aguas subterráneas
Acuiferos
Precipitación

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2021
description: El presente estudio tiene por objeto determinar cómo influyen los regímenes de precipitaciones en el desplazamiento de la cuña salina en un acuífero costero modelado a escala de laboratorio, tomando de referencia el régimen de precipitaciones, las características hidrogeológicas típicas de la región del acuífero Arroyo Grande, y el uso del software SUTRA, con el fin de verificar la funcionalidad y la operatividad del uso del prototipo de acuífero simulado
Dimensionen des Mathematikbildes finnischer Schülerinnen und Schüler
Creators: name: Rösken, Bettina
name: Pehkonen, Erkk
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2007
Subjects: subject: 510

description: Das Bild von Lernenden sowohl über Mathematik als auch das Lehren und Lernen von Mathematik ist ein entscheidender Parameter für Engagement und Erfolg in der Schule. In dieser Arbeit fokussieren wir auf den Systemaspekt von Beliefs und stellen die Ergebnisse einer repräsentativen Befragung finnischer Schülerinnen und Schüler der 11. Jahrgangsstufe vor. Mit Hilfe faktoranalytischer Methoden konnten sieben Dimensionen des Schülerbildes über das Lernen von Mathematik gewonnen werden. Diese reichen von internalen Aspekten des Selbstbildes wie Kompetenz, Selbstvertrauen und Anstrengung über das Bild von Mathematik hin zu externalen Faktoren wie Qualität des Lehrenden und erlebte familiäre Unterstützung.
Anàlisis de la cultura organizacional presente en las operaciones y el funcionamiento de Contecar S.A. y Sociedad Portuaria Regional de Cartagena S.A. bajo la perspectiva del modelo PCOC
Creators: name: Martinez Pérez, José Luis
name: Pulido Alzate, Oscar David
Publisher: name: Universidad de Cartagena
Year: 2016
Subjects: Cultura organizacional
Cultura corporativa
Comportamiento organizacional

description: Tesis (Administrador Industrial).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2016
description: El presente trabajo tiene como objetivo,analizar la cultura organizacional presente en las operaciones y el funcionamiento de CONTECAR S.A. y Sociedad Portuaria Regional de Cartagena bajo la perspectiva del modelo PCOC (Personal, Customer orientation, Organisational and Cultural issues) de Maull, Brown y Cliffe.
MEASUREMENT OF INTRA-ARTICULAR PRESSURES AND TEMPERATURES DURING STIFLE ARTHROSCOPY AND MENISCAL ABLATION USING A CADAVER MODEL
Creators: name: Salmelin, Bettina Riitta Maaritta
Publisher: name: Washington State University
Year: 2022
Subjects: arthroscopy
radiofrequency
stifle

description: The aims of the study were to measure intra-articular pressures (IAP) and temperatures (IAT) during arthroscopic meniscal ablation using a radiofrequency wand (RF). Fourteen dog cadavers (27 stifles) met the inclusion criteria for IAP measurements and 13 cadavers (26 stifles) for IAT measurements. IAPs were measured during stifle extension, ninety-degree flexion and maximal flexion at three pump pressures: +30mmHg, +50mmHg and +80mmHg. IAT measurements were recorded during intermittent 2 second, 5 second and continuous application of the radiofrequency wand (FR). During stifle arthroscopy, IAPs significantly increased with higher pump pressures (p<0.01). At pump pressures +30mmHg, +50mmHg and +80mmHg, the mean IAP was 51.8mmHg (CI: 41.3-62.2), 103.3mmHg (CI: 92.8-113.7) and 175.2mmHg (CI: 164.8-185.6) respectively. Changing stifle position from ninety-degree flexion to extension decreased IAP significantly by 22.4mmHg (CI: 16.2-28.5) and flexion significantly increased IAP by 20.9mmHg (CI:14.8-27.1) (p<0.001). At +30mmHg and +50mmHg, the IAP always remained <170mmHg regardless of stifle position. At 80mmHg, the IAP raised to or above 170mmHg in 11/14 stifles. During meniscal ablation, the mean maximum IAT was 22.3°C (CI: 20.8-23.8), 24.4°C (CI:23.0-25.9) and 34.7°C (CI: 32.9-36.5) after a 2 second, 5 second and continuous application of RF. Increasing the application time from 2 to 5 seconds significantly increased the mean IAT by 2.1°C (p=0.01) and by 12.4°C following continuous application (p<0.001). Intermittent applications did not increase IAT >45°C, however continuous applications resulted in IAT >45°C during 3/25 applications. Our results suggest that caution should be used during stifle arthroscopy and meniscal ablation. Fluid pump pressure of +30mmHg consistently result in IAPs within the safety limit (<120mmHg). If higher pump pressure settings are necessary, stifle flexion duration should be limited to limit exposure to IAP >120mmHg. Pump pressure settings of +80mmHg should be avoided to reduce the risk for permanent capsular deformation (>170mmHg). In this study, a pulsatile 2 and 5 second application did not increase temperatures above 45°C and would therefore be considered a safe technique for meniscal ablation. Continuous application of the meniscal ablator was predominantly safe, however in 12% of cases elevated IATs to chondromalacic levels.
Estimación de los coeficientes de infiltración y conexiones erradas en la Cuenca Carmelo - Campestre - Ceballos del sistema de alcantarillado de la Ciudad de Cartagena
Creators: name: Narvaez Lozano, Andres Manuel
name: Oliveros Ujueta, Carlos Alberto
Publisher: name: Universidad de Cartagena
Year: 2003
Subjects: Alcantarillado

description: Tesis (Ingeniero Civil). - - Universidad de Cartagena. Facultad de Ciencias E Ingeniería. Programa de Ingeniería Civil. 2003.
description: El presente estudio tiene por objeto estimar los coeficientes de infiltración y conexiones erradas en la cuenca CARMELO-CAMPESTRE-CEBALLOS del sistema de alcantarillado de la ciudad de cartagena
Suppressing and restoring the Dicke superradiance transition by dephasing and decay
Creators: name: Kirton, Peter
name: Keeling, Jonathan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show that dephasing of individual atoms destroys the superradiance transition of the Dicke model, but that adding individual decay toward the spin down state can restore this transition. To demonstrate this, we present a method to give an exact solution for the $N$ atom problem with individual dephasing which scales polynomially with $N$. By comparing finite size scaling of our exact solution to a cumulant expansion, we confirm the destruction and restoration of the superradiance transition holds in the thermodynamic limit.
description: 5 pages, 2 figures, updated to published version
Factors Affecting Successful Implementation of Projects in International Nongovernmental Organizations in Ethiopia: The case of Save the Children International Projects
Creators: name: Damtew, Blen
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Save the Children is one of the international non-governmental organization which works with a big ambition to achieve a world in which every child attains the right to survival, protection, development and participation. The purpose of this study is to establish factors affecting successful implementation of projects in international NGO's in Ethiopia. The case of Save the Children International projects in Ethiopia. To achieve this objective, the study is guided by the following specific research objectives: finding out how lack of effective planning affects the implementation of SCI Projects in Ethiopia; to establish the effects of clarity on complex internal and external rules on the effective implementation of SCI Projects in Ethiopia; to establish the influence of communication on the effective implementation of SCI Projects in Ethiopia; and to establish the extent to which managerial factors affects the implementation of SCI Projects in Ethiopia. This study was limited to one non-governmental organization - SCI. This study adopts a descriptive research design. Descriptive research design has been chosen because this study seeks to determine factors affecting successful implementation of projects in SCI in Ethiopia. The target population of this study included direct project staffs of SCI working specifically in the projects being implemented in Ethiopia. Questionnaires were used to collect data. It had both open ended and close ended questions. Both hard copies and email communication were issued for the target population. The collected data is analyzed using both quantitative and qualitative data analysis methods. Quantitative method involved descriptive analysis. Descriptive analysis such as frequencies and percentages is used to present quantitative data in the form of tables and graphs. All the respondents indicated that lack of effective planning and clarity on complex internal and external rules affects successful project implementation at SCI. The results also indicated that communication and managerial factors affects implementation of projects at SCI. The study recommends that to effectively implement donor projects SCI work plan must be clear to the project employees and procedures should be in place to discuss the requirements of the project before starting to implement, communication should be effective, project managers should have hard and soft skills and clear communication and focus on strong induction in creating common understanding among the staffs on both donor and internal requirement at the beginning of the project is very crucial. Areas for further studies are also recommended.
Diseño de un plan de capacitación para la Embotelladora Roman S.A.
Creators: name: De Avila Altamiranda, Carla Del Carmen
name: Otero Torres, Luis Alberto
Publisher: name: Universidad de Cartagena
Year: 1997
Subjects: Análisis de cargo
Evaluación de cargos
Capacitación de empleados

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 1997
description: El presente estudio tiene por objeto diseñar un plan de capacitación para la empresa Embotelladora Roman S.A., que se ajuste a las necesidades y expectativas reales de todo el personal (Directivos, jefes, mandos y medios y operarios), teniendo en cuenta: el plan estratégico corporativo, los programas y proyectos a desarrolla por la empresa, ademas el perfil del cargo, perfil del titular, evaluación del desempeño y sugerencias del personal.
Enhancing the injection locking range of spin torque oscillators through mutual coupling
Creators: name: Romera, M.
name: Talatchian, P.
name: Lebrun, R.
name: Merazzo, K. J.
name: Bortolotti, P.
name: Vila, L.
name: Costa, J. D.
name: Ferreira, R.
name: Freitas, P. P.
name: Cyrille, M. -C.
name: Ebels, U.
name: Cros, V.
name: Grollier, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate how the ability of the vortex oscillation mode of a spin-torque nano-oscillator to lock to an external microwave signal is modified when it is coupled to another oscillator. We show experimentally that mutual electrical coupling can lead to locking range enhancements of a factor 1.64. Furthermore, we analyze the evolution of the locking range as a function of the coupling strength through experiments and numerical simulations. By uncovering the mechanisms at stake in the locking range enhancement, our results will be useful for designing spin-torque nano-oscillators arrays with high sensitivities to external microwave stimuli.
Litiasis biliar
Creators: name: Marun Saab, Elias
Publisher: name: Universidad de Cartagena
Year: 1942
Subjects: Enfermedades del sistema digestivo
Colecistectomía
Cirugía de la vesícula biliar

description: Tesis (Médico),-- Universidad de Cartagena. Facultad de Medicina, 1942
description: La siguiente investigación tiene como fin conocer los recursos disponibles para establecer el diagnóstico de la litiasis biliar y sus complicaciones
Conjugacy growth series for finitary wreath products
Creators: name: Locus, Madeline
Publisher: name: arXiv
Year: 2016
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 11P81, 05E10, 20C32, 20B30

description: We examine the conjugacy growth series of all wreath products of the finitary permutation groups $\text{Sym}(X)$ and $\text{Alt}(X)$ for an infinite set $X$. We determine their asymptotics, and we characterize the limiting behavior between the $\text{Alt}(X)$ and $\text{Sym}(X)$ wreath products. In particular, their ratios form a limit if and only if the dimension of the symmetric wreath product is twice the dimension of the alternating wreath product.
Integral geometry of Euler equations
Creators: name: Nadirashvili, Nikolai
name: Vlăduţ, Serge
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 35Q, 53Z

description: We develop an integral geometry of stationary Euler equations defining some function $w$ on the Grassmannian of affine lines in the space. This function depends on a putative compactly supported solution $v$ of the system, and we deduce a linear differential equation for $w$. We prove also that the purported annulation of $w$ implies that locally supported solutions of the steady Euler equation in $\mathbb R^3$ are zero.
description: 22 pages; Theorem 5.1 in versions 2-7 being wrong, the main result is conditional
Transformaciones comerciales de la Ciudad Amurallada, base para una propuesta de un gran centro comercial abierto: sector la Matuna
Creators: name: Barrios Borre, Luis Alberto
name: Vital Díaz, Mauren
Publisher: name: Universidad de Cartagena
Year: 2015
Subjects: subject: Investigación de mercado
subject: Marketing
subject: FOS: Economics and business

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2015
description: El objetivo de esta investigación busca desde la orientación al marketing, identificar y analizar las transformaciones comerciales del sector La Matuna de Cartagena de Indias que le permiten convertirse en un gran centro comercial a cielo abierto en beneficio de la proyección de la ciudad a nivel nacional e internacional como producto ciudad.
Light-by-light scattering sum rules in light of new data
Creators: name: Danilkin, Igor
name: Vanderhaeghen, Marc
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We evaluate the light-quark meson contributions to three exact light-by-light scattering sum rules in light of new data by the Belle Collaboration, which recently has extracted the transition form factors of the tensor meson $f_2(1270)$ as well as of the scalar meson $f_0(980)$. We confirm a previous finding that the $η, η^\prime$ and helicity-2 $f_2(1270)$ contributions saturate one of these sum rules up to photon virtualities around 1 GeV$^2$. At larger virtualities, our sum rule analysis shows an important contribution of the $f_2(1565)$ meson and provides a first empirical extraction of its helicity-2 transition form factor. Two further sum rules allow us to predict the helicity-0 and helicity-1 transition form factors of the $f_2(1270)$ meson. Furthermore, our analysis also provides an update for the scalar and tensor meson hadronic light-by-light contributions to the muon's anomalous magnetic moment.
description: 21 pages, 4 figures
title: CADMIUM TELLURIDE
title: A STUDY ON THE EFFECTS OF IODINE DOPING
titleType: Subtitle
Creators: name: Bigbee-Hansen, Samuel
Publisher: name: Washington State University
Year: 2022
Subjects: Cadmium Telluride
Iodine
MVB
Photovoltaic
Solar Cell
Thin Film

description: In the pursuit of creating efficient CdTe p-n homojunctions, we developed iodine (I) n-type doped CdTe using Cadmium Iodide (CdI2) as a dopant in varying concentrations (1018 cm-3, 1019 cm-3 and 1020 atoms·cm-3 target concentrations) in CdTe. Iodide doped crystals were grown using a Modified Vertical Bridgman furnace (MVB). Single crystals were characterized using XRD (X-Ray Diffraction), Hall effect, IR (Infrared) Microscopy, UV-VIS-NIR (Ultraviolet-Visible-Near infrared Spectroscopy) and FTIR (Fourier Transform Infrared Spectroscopy). Partners at the National Renewable Energy Laboratory (NREL) also provided data for Hall Effect and Two Photon Excitation Time Resolved Photoluminescence (2PE TRPL) of wafers and films. Photoluminescence mapping (PL mapping) was obtained from Klar scientific, and glow discharge mass spectrometry (GDMS) for purity and final doping concentration was obtained from the National Research Council Canada. Due to poor carrier properties in the crystals as-grown, two annealing treatments were explored, in either tellurium or cadmium vapor. Homojunctions were made at NREL by depositing n-type films from these crystals on p-type single crystals, CdTe:P grown and WSU. The n-type films were created using the close-space sublimation epitaxy (CSSE) process. Herein is reported the results of the grown CdTe:I crystals and, to a lesser extent, the properties of the CdTe:I thin films formed by CSSE.
Assessment Of Customer Relationship Management Practice (The case of Dashen Bank S.Co, Addis Ababa)
Creators: name: H/Mariam, Biniam
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: The main objective of this study is to assess the customer relationship management practice in case Dashen Bank. CRM is one of the critical strategies that can be employed by organizations to improve competitive advantage. Four critical CRM elements are measured in this study are; first the convenience & physical appearance, second employee's behavior, relationship development & reliability, third pricing policy, responsiveness & customer Service quality and forth customers information database management, product development & promotion. The study adopted a descriptive design and quantitative data were employed to address the objective. Both primary and secondary data were used. The quantitative data were collected through a structured questionnaire and document review. The Population for the study was 1,403 Corporate Customers of Dashen Bank in Addis Ababa ( those customers data were found from the bank Information technology department) and the study was conducted on the basis of opinion survey collected from randomly selected 311 Corporate Customers, expecting that those customers have significant impact on the bank long run profitability. The collected data was analyzed using SPSS version 20. Percentage, mean, standard deviation and relevant statistical methods were employed. Moreover, tables and elaborations were used to present the findings. Based on 311 respondents this study found that the overall assessment of Customer relationship management practice is at good level. However, the bank is weak implementation of easy customer support access like call center, supportive and updated website, helpdesk and other alternative communication channels that helps the customers at the absence of the relationship manager which are responsible for handling customers transactions, employees and management team periodical Customer visit, absence of Convenient parking space and capturing and updating customer information and use the information to satisfy customer needs.
Lindhard integral equation with binding energy applied to light and charge yields of nuclear recoils in noble liquid detectors
Creators: name: Sarkis, Y.
name: Aguilar-Arevalo
name: D'Olivo, Juan Carlos
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: We present a model of the ionization efficiency, or quenching factor, for low-energy nuclear recoils, based on a solution to Lindhard integral equation with binding energy and apply it to the calculation of the relative scintillation efficiency and charge yield for nuclear recoils in noble liquid detectors. The quenching model incorporates a constant average binding energy together with an electronic stopping power proportional to the ion velocity, and is an essential input in an analysis of charge recombination processes to predict the ionization and scintillation yields. Our results are comparable to NEST simulations of LXe and LAr and are in good agreement with available data. These studies are relevant to current and future experiments using noble liquids as targets for neutrino physics and the direct searches for dark matter.
description: LIDINE2022 Conference Warsaw 22 Sep 2023
Factores administrativos y del entorno económico que afectan el desempeño de las mipymes en el sector plástico
Creators: name: Pérez Del Castillo, Jorge E
name: Utria Monsalve, José
Publisher: name: Universidad de Cartagena
Year: 2005
Subjects: Microempresas
Pequeñas industrias

description: Tesis(Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2005
description: El presente estudio tiene por objeto analizar los factores administrativos y del entorno económico que inciden en el desempeño de las mipymes del sector plástico en Cartagena y evaluar las ventajas y desventajas de la gestión administrativa de estas empresas en el entorno competitivo local.
Wie vergleichen Lehramtsstudierende Verteilungen unter Verwendung der Software TinkerPlots?
Creators: name: Frischemeier, Daniel
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Vergleiche von Verteilungen zweier numerischer Merkmale sind im alltäglichen Leben und in den Medien präsent - eine typische Frage zum Verteilungsvergleich ist beispielsweise (Biehler et al., 2003): „Inwiefern unterscheiden sich Schülerinnen und Schüler hinsichtlich ihrer Zeit am Computer (in Stunden pro Woche)?“ Wenn man solchen Fragestellungen nachgeht, sollte man zum einen mit multivariaten und realen Daten arbeiten (Garfield & Ben - Zvi, 2008), sowie adäquate Software, wie zum Beispiel die Software TinkerPlots (Konold & Miller, 2011) einsetzen. Die Vorzüge der Software TinkerPlots werden u.a. in Biehler (2007) diskutiert. Betrachtet man Lernende beim Durchführen eines Verteilungsvergleiches unter Verwendung einer Software, so eröffnen sich zwei Perspektiven: Zum einen der Blick auf den Einsatz der Software im Verteilungsvergleich - Prozess, zum anderen die stochastischen Aspekte beim Herausarbeiten von Unterschieden und Gemeinsamkeiten zwischen den Verteilungen. Wir wollen im Folgenden die erste Perspektive verfolgen.
Apps im Mathematikunterricht
Creators: name: Borys, Thomas
name: Fragapane, Vincenzo
name: Hartmann, Mutfried
name: Mundt, Fabian
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Mobile Endgeräte wie z.B. Tablet-PCs oder Smartphones sind überall auf dem Vormarsch. So besitzen nach der aktuellen JIM - Studie 2013 (Jugend, Information, Multi-Media) des Medienpädagogischen Forschungsverbunds Südwest fast Dreiviertel der Jugendlichen zwischen 12 und 19 Jahren ein Smartphone. Tablet-PCs, auf denen in der Regel auch die gleichen Apps laufen, haben bereits 15% der Jugendlichen. Mobile Endgeräte sind aus medientechnischer Sicht die reinsten Tausendsassas. So können sie als Videokamera, Fotoapparat, Diktiergerät, Scanner, Fernseher, Computer, Buch etc. eingesetzt werden (vgl. Kirch, 2013). Die breite Verfügbarkeit dieser Geräte eröffnen auch für den Mathematikunterricht neue Möglichkeiten. Neben Taschenrechnern, Tabellenkalkulationssystemen, Plottern, CAS und DGS sind es oft auch nicht direkt im Bereich der Mathematik angesiedelte Apps wie z.B. Spiele, die interessante mathematische Bezüge aufweisen. Bachmair, Friedrich und Risch stellen sich die Frage, warum man die Kompetenzen der Jugendlichen bezüglich dieses neuen Mediums nicht für einen „gezielten Bildungsprozess“ (vgl. Bachmair et al., 2011) nutzbar macht. Möchte man dies im Mathematikunterricht tun, ergeben sich viele Fragen, so z.B.: ─ Wie kann man Apps mit Schüler/innen selbst erstellen? ─ Welche Apps gibt es für den Mathematikunterricht? ─ Wie findet man die richtige App für den Unterricht?
Concesión de obras públicas
Creators: name: Abello Martínez-Aparicio, Orlando
Publisher: name: Universidad de Cartagena
Year: 1973
Subjects: Actos administrativos - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1973
description: Siendo la concesión un acto administrativo, es seguro que solo la administración puede dejarlo sin efecto por otro acto administrativo suyo, el mutuo acuerdo entre concedente y concesionario resulta inocuo, pues la concesión no es un producto del acuerdo de voluntades, ni es un contrato.
An efficient approximation for point-set diameter in higher dimensions
Creators: name: Imanparast, Mahdi
name: Hashemi, Seyed Naser
name: Mohades, Ali
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences
subject: 65D18 68W25 68U05

description: In this paper, we study the problem of computing the diameter of a set of $n$ points in $d$-dimensional Euclidean space for a fixed dimension $d$, and propose a new $(1+\varepsilon)$-approximation algorithm with $O(n+ 1/\varepsilon^{d-1})$ time and $O(n)$ space, where $0 < \varepsilon\leqslant 1$. We also show that the proposed algorithm can be modified to a $(1+O(\varepsilon))$-approximation algorithm with $O(n+ 1/\varepsilon^{\frac{2d}{3}-\frac{1}{3}})$ running time. These results provide some improvements in comparison with existing algorithms in terms of simplicity and data structure.
Subcomputable Schnorr Randomness
Creators: name: Sureson, Claude
Publisher: name: arXiv
Year: 2016
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: 03D25, 68Q15

description: The notion of Schnorr randomness refers to computable reals or computable functions. We propose a version of Schnorr randomness for subcomputable classes and characterize it in different ways: by Martin Löf tests, martingales or measure computable machines.
Caracterización de la atención al cliente de los servicios públicos domiciliarios de Cartagena
Creators: name: Herrera Acosta, Robin
name: Suarez Montero, Alvaro Francisco
Publisher: name: Universidad de Cartagena
Year: 2002
Subjects: Servicio al cliente
Calidad del servicio

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2002
description: El presente estudio tiene por objeto analizar y comparar las características especificas de la atención al cliente que ofrecen las empresas prestadoras de servicios públicos domiciliarios de la ciudad de Cartagena y cómo la perciben los usuarios, para determinar el grado de compenetración que existe entre ellos.
Effect of Cobalt-60 Irradiation on Bradykinin B2 Receptor Expression on Human HF-15 Cells
Creators: name: Blaukat, Andree
name: Micke, Oliver
name: Micke, Patrick
Publisher: name: Technische Universität Dortmund
Year: 2003
Subjects: subject: B2-receptor
subject: Bradykinin
subject: inflammation
subject: radiotherapy
subject: receptor expression
subject: 610

description: Bradykinin is a key mediator of pain and inflammation. Although radiotherapy has proven to be beneficial in the treatment of inflammatory disorders, the effect of irradiation on the bradykinin pathway in human cells has not been evaluated yet. Therefore, the aim of the study was to establish a human cell culture system and to analyze bradykinin B2 receptor expression in response to different doses of gamma-ray exposure. Cultured human foreskin fibroblasts (HF15) were irradiated with 0.5 Gy, 2.0 Gy, 5.0 Gy and 10.0 Gy single doses using a Cobalt 60 radiation source. Before treatment (0h) as well as 6, 24, and 48 hours after radiation the bradykinin receptor surface density was quantified by a ligand binding assay using radioactive [3H]bradykinin. A dose and time dependant expression of the bradykinin B2 receptor was observed. Initially, higher doses (2 and 10 Gy) induced a fast upregulation of the receptor, followed by long lasting downregulation compared to baseline levels. In contrast the lowest dose (0.5 Gy) induced a fast down regulation of the receptor. After 24 h and 48 h the levels increased again but remained below baseline levels. A dose- and time-dependant change in bradykinin B2 receptor expression on HF-15-cells in response to irradiation was demonstrated. The results may imply radio-biological explanations for the beneficial effect of radiotherapy in benign inflammatory diseases.
description: EXCLI Journal ; Vol. 2, 2003
Cutoff phenomenon for the asymmetric simple exclusion process and the biased card shuffling
Creators: name: Labbé, Cyril
name: Lacoin, Hubert
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We consider the biased card shuffling and the Asymmetric Simple Exclusion Process (ASEP) on the segment. We obtain the asymptotic of their mixing times: our result show that these two continuous-time Markov chains display cutoff. Our analysis combines several ingredients including: a study of the hydrodynamic profile for ASEP, the use of monotonic eigenfunctions, stochastic comparisons and concentration inequalities.
description: 50 pages
Las inferencias discursivas en la comprensión de textos argumentativos: Un estudio diagnóstico en la universidad de Cartagena
Creators: name: Castilla Martínez, Noralba
name: Pastrana Ledesma, Isaura
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Inferencia intertextual
Compresion textual
Modo argumentativo
Prueba diagnostica

description: Tesis (Profesional en Linguística y Literatura) -- Universidad de Cartagena. Facultad de ciencias humanas. Programa de linguística y literatura.
description: El propósito de esta investigación es realizar un diagnóstico de la comprensión de textos argumentativos en la universidad de Cartagena mediante una prueba objetiva que permitió evaluar las inferencias discursivas realizadas por estudiantes de primer y último semestre. Para ello se fundamenta en la perspectiva discursiva del lenguaje de María Cristina Martínez (2001; 2002; 2004; 2005, 2007), que a su vez retoma la perspectiva pragmalingüística de Oswald Ducrot, particularmente en relación con la polifonía y argumentación. De igual manera, este trabajo se fundamenta en los aportes teóricos que realiza Van Dijk desde la lingüística textual. La evaluación de la comprensión textual se realizó mediante la aplicación de una prueba diagnóstica de tipo cuasiexperimental, a partir de un artículo de opinión titulado Aborto y Moral de Héctor Abad Faciolince (2009); los resultados obtenidos de esta prueba señalan que los estudiantes de último semestre de la universidad de Cartagena se ubican en un nivel Medio Bajo/regular de comprensión textual (con un 55,3) y los de primero se encuentran en un nivel Bajo/Deficiente (Con un 48,5) de acuerdo a la escala propuesta. Ello muestra que los estudiantes de último semestre realizaron mejores inferencias que los de primer semestre, aunque con una mínima diferencia, lo que permite concluir que ambos grupos presentaron un resultado poco satisfactorio.
Diseño del programa de salud ocupacional en la empresa Ingeambienté S.A. E.P.S
Creators: name: Martinez Carvajal, Katia Isabel
name: Verjel Plata, Zoraida
Publisher: name: Universidad de Cartagena
Year: 2003
Subjects: Salud ocupacional

description: Tesis (Administrador Industrial)--Universidad de Cartagena. Facultad de Ciencias Económicas, Programa de Administración Industrial, 2003
description: El problema presente en la población trabajadora de INGEAMBIENTE S.A. E.S.P. es la ausencia de un programa de salud ocupacional que le permita identificar a qué factores se encuentran expuestos, y cómo poder prevenir o actuar ante situaciones que atenten contra la salud, la seguridad, el ambiente laboral y la empresa como infraestructura. El desconocimiento de los puntos que conforman un programa de salud ocupacional para prevenir accidentes, enfermedades profesionales y daños físicos a las instalaciones, provoca perdidas en la empresa que se reflejan en el buen desempeño de sus actividades y en sus utilidades Existe la necesidad de mejorar las condiciones laborales de la fuerza de trabajo en todos sus aspectos, no solamente en el conocimiento y desarrollo de habilidades, sino en la manera de hacer su trabajo en forma segura, que proteja su salud dentro del entorno laboral saludable. De igual forma se hace necesario que la empresa esté organizada administrativamente de tal manera que se puedan tener mejores resultados en el desarrollo del Plan de Salud Ocupacional; es decir, que el empleador esté comprometido con el proceso, para que promueva la concientización del trabajador en la importancia que tiene para su calidad de vida, el participar activamente en el desarrollo del plan. Teniendo en cuenta lo anterior INGEAMBIENTE S.A. E.S.P., como empresa especializada en el manejo integral de residuos sólidos, busca implementar mecanismos de prevención y control de los riesgos laborales, con la participación de los trabajadores, contribuyendo así con el mejoramiento continuo de los procesos realizados en la prestación de los servicios de disposición final de residuos, y de esta forma de la calidad de vida, fomentando el sentido de pertenencia hacia la empresa y la comunidad en general y favoreciendo la relación de tipo social y obrero patronales.
Differenzierter Unterricht mit Blütenaufgaben
Creators: name: Salle, Alexander
name: Vom Hofe, Rudolf
name: Pallack, Andreas
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2014
Subjects: subject: 510

description: Zahlreiche Studien liefern Belege für die Leistungsheterogenität, die innerhalb von Klassen, Stufen und Schulen vorherrscht – selbst der Vergleich unterschiedlicher Schultypen offenbart breite Überschneidungsbereiche bei Schülerleistungen (vom Hofe et al., 2009). Neben Intelligenz und Vorwissen sind die intrinsische Motivation und der Einsatz von Lernstrategien beim Lernen wichtige Faktoren für die Aneignung langfristigen und tragfähigen Wissens (Murayama, Pekrun, Lichtenfeld & vom Hofe, 2012). Als Mittel für die allgemeine Förderung in heterogenen Klassenverbänden, insbesondere unter der Perspektive einer Stärkung des eigenständigen und selbstregulierten Lernens, wird seit 2009 das binnendifferenzierende Format der Bielefelder Blütenaufgabe im Projekt SINUS.NRW weiterentwickelt.
"La seguridad social en Colombia y las políticas de protección a la clase trabajadora"
Creators: name: González Zorro, Alfredo
Publisher: name: Universidad de Cartagena
Year: 1973
Subjects: Seguridad social - Colombia

description: Tesis (Abogado) -- Universidad de Cartagena. Facultad de Derecho y Ciencias Políticas. Programa de Derecho, 1973
description: Análisis de los problemas que nos ocupa, al tener no solo, de lo que estatuyen nuestras leyes sociales y la protección que las mismas brindan a los asociados frente a los puntos, exponiendo compromisos para participar y defender la seguridad social.
An Assessment Of Customers' Perception Towards Ethio Telecom Broadband Service Delivery Practices; The Case Of Ethio Telecom Financial Enterprise Customers
Creators: name: Ambaw, Abebe
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: This study is aimed to assess the level of customers' perception towards ethio telecom broadband service delivery practices by focusing on financial institutions in Addis Ababa as target population. The study adapted the framework developed by Muhammad, Mahmudul & Abdul (2012) which focuses on broadband customers' perception and buying intention against existing practice of broadband providers considering different dimensions like: service quality, technical and functional qualities and experience economy. Both descriptive and explanatory methods are applied to study the level of exiting service delivery practice of ethio telecom and the level of customers' perception. The result from the descriptive analysis shows that ethio telecom has good practices in communication level, competency and courtesy of its central broadband staffs and accessibility of its broadband support at shops and contact center. The result, on the other hand shows that, there is relatively poor practices in accessibility of broadband price and technology, maintenance delay, competency of field maintenance staffs, security level of broadband service, broadband speed, performance of access modems and broadband link outage. The result from correlation study shows that there is significant correlation between some of the ethio telecom service delivery practices and customers' perception. According to the result from multinomial regression analysis, there is no association or prediction between variables representing ethio telecom service delivery practices and overall perception of broadband customers towards ethio telecom service delivery practices. This study recommended conducting competency assessment and skill development for broadband field intervention staffs and to remove old DSL models from the broadband service delivery system. Further, to adopt new technologies and service models and work on customer experience and perception improvement than network oriented operations are also recommended by the study. More improvements required in the area of broadband outage and long-lasting maintenance delays.
Supplementary document for Temporal reflection and refraction in the presence of a zero-nonlinearity wavelength - 6191103.pdf
Creators: name: Sparapani, Alexis
name: Bonetti, Juan
name: Linale, Nicolas
name: Hernandez, Santiago
name: Fierens, Pablo
name: Grosz, Diego
Publisher: name: Optica Publishing Group
Year: 2023
Subjects: Uncategorized

description: Supplemental Document
Direct Measurement of the phi(1020) Leptonic Branching Ratio
Creators: name: Achasov, M. N.
name: Beloborodov, K. I.
name: Berdyugin, A. V.
name: Bogdanchikov, A. G.
name: Bozhenok, A. V.
name: Bukin, A. D.
name: Bukin, D. A.
name: Burdin, S. V.
name: Dimova, T. V.
name: Drozdetsky, A. A.
name: Druzhinin, V. P.
name: Dubrovin, M. S.
name: Gaponenko, I. A.
name: Golubev, V. B.
name: Ivanchenko, V. N.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters