cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effects Of Total Quality Management On Pharmaceutical Distribution Performance: The Case Of Wholesale Business In Addis Ababa
Creators: name: Aberra, Selam
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: TQM becomes a strategic imperative for economic organizations to address the management of the distribution function in general and to device a channel strategy which gains them access, coverage, representation in the market place. Accordingly, this paper studied how TQM principles affect distribution performance in terms of effective delivery and customers' satisfaction in supply chain of Addis Ababa distribution centers. Using multivariate analysis, this study found that TQM principles have positive effect on pharmaceutical distribution performance. Predominantly, it was found that leadership (Sig - .002: p<0.05; ß=.141), customer focus (Sig - .005: p<0.05; ß=0.085), process approach (Sig - .001: p<0.05; ß=.322), continual improvement (Sig - .00001: p<0.05; ß=.383), mutually beneficial supplier relations (Sig - .0034: p<0.05; ß=.010) and people involvement (Sig - .004: p<0.05; ß=.011) have a significant effect on distribution performance. But systematic approach to management (Sign - .0562: p>0.05), factual approach to decision making (Sig - .579: p<0.05) have insignificant effect on distribution performance. The results provide managers with evidence supporting the value of distribution effectiveness and the importance of customer-oriented service in a logistical setting. Emphasis should be put on the incorporation of all the principles of TQM for the success of the distribution performance of the organization. The role of leadership, employee participation, customer focus, supplier quality management, continual improvement, and organizational culture are apparent for the success of the firm in terms of effective delivery, cost reduction, market share, productivity, profitability and overall business performance
title: Expression of Cyclin D1 and VEGF in meningiomas: Correlation with histopathological grading
Creators: name: Wiedemann, Lisanne D. S.
name: Ebert, Elke
name: Ludwig, Nicole
name: Kim, Yoo-Jin
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Meningiomas are among the most common primary intracranial neoplasms. Their classification follows WHO grading schemes, containing three grades from benign to malignant. Overexpression of Cyclin D1 has been reported in a variety of malignancies and VEGF plays an important role in tumor[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Action complexity of charged black holes with higher derivative interactions
Creators: name: Mandal, Taniya
name: Mitra, Arpita
name: Punia, Gurmeet Singh
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum complexity of CFT states can be computed holographically from the dual gravitational solutions. In this paper, we have studied the late time growth of holographic complexity of a charged black hole in five-dimensional, Anti-de Sitter spacetime in the presence of quartic derivative interaction terms using the Complexity = Action conjecture. These interaction terms in the gravitational action can lead to the violation of Llyod's bound. The dual CFT is known to admit a hydrodynamic description where the KSS bound is also violated due to the presence of higher derivative terms in the bulk action. The origin of terms which violate both the bounds are the same for the gravitational action of consideration. We have also discussed the late time complexity growth rate of the Jackiw-Teitelboim (JT) model with higher derivative corrections.
description: 29 Pages, 2 Figures
Probing hairy black holes caused by gravitational decoupling using quasinormal modes and greybody bounds
Creators: name: Yang, Yi
name: Liu, Dong
name: Övgün, Ali
name: Long, Zheng-Wen
name: Xu, Zhaoyi
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational decoupling can add hair to the black holes by adding extra sources. The quasinormal modes of hairy black hole caused by gravitational decoupling for the massless scalar field, electromagnetic field, and gravitational perturbation are investigated. The equations of effective potential for three perturbations are derived in hairy black hole spacetime. We also study the time evolution corresponding to the three perturbations, and the quasinormal mode frequencies are calculated using the Prony method through the time-domain profiles. By analyzing the influence of the hairs ($α$, $l_0$ and $Q$) for the black holes we studying on quasinormal mode, we find that the hairs $α$ and $l_0$ decrease the oscillation frequency of the gravitational wave signal, and the hair $Q$ increase its oscillation frequency.Furthermore, we have calculated the bounds of greybody factor and high-energy absorption cross section with the Sinc approximation, which reveals that the presence of charges ($α$ and $l_0$) generating primary hair can increase the probability of gravitational radiation arriving spatial infinity, whereas the charge $Q$ from the extra sources does the opposite.
Supervised-Learning-Aided Communication Framework for MIMO Systems with Low-Resolution ADCs
Creators: name: Jeon, Yo-Seb
name: Hong, Song-Nam
name: Lee, Namyoon
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: This paper considers a multiple-input-multiple-output (MIMO) system with low-resolution analog-to-digital converters (ADCs). In this system, we propose a novel communication framework that is inspired by supervised learning. The key idea of the proposed framework is to learn the non-linear input-output system, formed by the concatenation of a wireless channel and a quantization function used at the ADCs, for data detection. In this framework, a conventional channel estimation process is replaced by a system learning process, in which the conditional probability mass functions (PMFs) of the nonlinear system are empirically learned by sending the repetitions of all possible data signals as pilot signals. Then the subsequent data detection process is performed based on the empirical conditional PMFs obtained during the system learning. To reduce both the training overhead and the detection complexity, we also develop a supervised-learning-aided successive-interference-cancellation method. In this method, a data signal vector is divided into two subvectors with reduced dimensions. Then these two subvectors are successively detected based on the conditional PMFs that are learned using artificial noise signals and an estimated channel. For the case of one-bit ADCs, we derive an analytical expression for vector-error-rate of the proposed framework under perfect channel knowledge at the receiver. Simulations demonstrate the detection error reduction of the proposed framework compared to conventional detection techniques that are based on channel estimation.
title: Distinct morphology in molecular subgroups of glioblastoma in young patients
Creators: name: Pöschl, Julia
name: Koch, Arend
name: Giese, Armin
name: Schüller, Ulrich
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Glioblastoma is a malignant primary brain tumor that occurs in all age groups and corresponds to WHO°IV. Based on genetics, global gene expression, and methylation patterns, glioblastoma can be categorized in six different molecular subgroups named “IDH”, “K27”,[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
The Filipino Nation and its Fabrication: From a Catholic Perspective
Creators: name: Chua, Daniel Tyler S.
Publisher: name: Zenodo
Year: 2022
Subjects: Philippines, Thomism, Nation, Catholic, Catholic Social Teaching, Catholic Social Doctrine

description: Nota bene: I have caught some errors pertaining to citations and I am working on rectifying them. This is a working draft and I cannot attest to its integrity. I sincerely apologize. This is a synthesis between Filipino History, Thomistic Philosophy, and Catholic Social Teaching. This work seeks to examine (i) the history of Filipino nation building; (ii) Catholic views on nationhood in this particular context, (iii) the ideological aspects of Filipino nationalism, (iv) the situation of the local Catholic Church, (v) Catholic social doctrine and its particular application.
Resta-like preconditioning for self-consistent field iterations in the linearized augmented planewave method
Creators: name: Kim, Jongmin
name: May, Matthias M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Convergence in self-consistent-field cycles can be a major computational bottleneck of density-functional theory calculations. We propose a Resta-like preconditioning method for full-potential all-electron calculations in the linearized augmented planewave (LAPW) method to smoothly converge to self-consistency. We implemented this preconditioner in the exciting code and apply it to the two semiconducting systems of MoS$_2$ slabs and P-rich GaP(100) surfaces as well as the metallic system Au(111), containing a sufficiently large amount of vacuum. Our calculations demonstrate that the implemented scheme performs reliably as well as more efficiently regardless of system size, suppressing long-range charge sloshing. While the suitability of this preconditioning higher for semiconducting systems, the convergence for metals is only slightly decreased and thus still trustworthy to apply. Furthermore, a mixing algorithm with the preconditioner shows an improvement over that with the Kerker preconditioner for the investigated semiconducting systems.
Análisis organizacional de la empresa Herrera & Duran Ltda. Basado en el modelo de las 7´s de Mckinsey
Creators: name: Escorcia Díaz, Leidys Helena
name: Pérez Avila, Vanessa Del Carmen
Publisher: name: Universidad de Cartagena
Year: 2014
Subjects: Análisis organizacional
Estructura organizacional
Análisis organizacional - Herrera & Duran Ltda

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2014
description: En el mundo actual las organizaciones viven inmersas en un complejo entorno lleno de constantes cambios y situaciones antes la cuales deben sobrevivir y mostrarse competentes, lo que no resulta una tarea fácil, al contrario, implica todo un proceso de estudio, análisis y generación de estrategias dentro de la organización. No obstante, teniendo en cuenta lo anterior el grupo investigador considera que existen muchas empresas que no le dan la real importancia a lo anteriormente expresado y no tienen planes ni estrategias definidas claramente y mucho menos implementadas, de manera que actúan sin un sentido y direccionamiento que impide plasmar y concretar acertadamente la verdadera esencia que debe estar reflejada en su misión y visión lo que se convierte en la principal causa del no logro de los objetivos organizacionales, manifestándose en niveles bajos de desempeño y eficiencia en la compañía por tanto, es muy importante que todas las empresas se concienticen de esta situación y lleven a cabo estudios y cursos de acción que permitan evaluar constantemente la organización en relación con el cumplimiento de metas, desempeño, y eficiencia. Entre los motivos por los cuales las empresas no realizan este tipo de análisis podríamos encontrar que debido a su tamaño y constitución no les parece necesario, por factores económicos, por falta de tiempo, por no contar con el personal capacitado, o quizás simplemente nunca han optado por incluir este tipo de análisis en miras de conocer mejor su situación actual y tomar las medidas a las que haya lugar. Siendo este último, el motivo por el cual el grupo investigador decide realizar un análisis organizacional en la empresa objeto de estudio, de la cual se hablara a continuación.
Evaluación de la gestión de la compensación salarial en la empresa Granandina LTDA., sucursal Cartagena
Creators: name: Carrasquilla Eljaiek, Indira
name: Feria Hoyos, Angélica Del Carmen
Publisher: name: Universidad de Cartagena
Year: 2013
Subjects: Administración de personal
Salarios - Investigaciones

description: Tesis (Especialista en Gestión Gerencial) -- Universidad de Cartagena. Facultad de ciencias económicas. Especialidad en gestión gerencial, 2013
description: Colombia es un país, que por su ubicación estratégica posee una expansión económica que a partir de los noventa, con la llamada apertura económica, inicia un nuevo período que busca insertar al país en el proceso de la globalización. Al estar bañada por el Océano Atlántico y Pacífico, le ha permitido al país una mayor expansión a nivel internacional, a través de haber suscrito y puesto en vigencia varios tratados de libre comercio, lo que conlleva al desarrollo de empresas logística para atender, este mercado, como la empresa Granandina Ltda, que posee, hoy día, más de veintiocho (28) años de fundada, con el fin de Orientar y asesorar eficientemente a los usuarios de comercio exterior en todas sus operaciones (importaciones, exportaciones). Esta empresa, posee cobertura en las principales aduanas del país, como Barranquilla, Bogotá, Cali, Buenaventura, Bucaramanga, Cartagena, Cúcuta, Ipiales, Maicao, Medellín, Pereira y Santa Marta, atendidas todas con, alrededor de ciento cuarenta y ocho (148) empleados, calificados. Sin embargo, es una empresa completamente centralizada en la ciudad de Bogotá, donde se toman todas las decisiones de índole administrativo y financiero, lo que disminuye la autonomía de las demás, entre las cuales se destaca la relacionada con la compensación o escala salarial, generándose, entonces un escenario desigual en esta materia, dado que al comparar el comportamiento salarial de los diferentes cargos, aunque sean de igual denominación, algunos presentan diferencias significativas que permite el cuestionamiento sobre el nivel de equidad interna y externa, que esto significa.
Valoración económica de los bienes y servicios ambientales de las plantaciones madereras en el municipio de Turbaco del Departamento de Bolivar
Creators: name: Alcalá Arellano, Jorge
name: Miranda Andrade, Génito
Publisher: name: Universidad de Cartagena
Year: 2009
Subjects: Bienes y servicios
Industria maderera - Turbaco - Bolívar
Economía - Recursos naturales

description: Tesis (Administrador Industrial).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración Industrial, 2009
description: Valorar económicamente los Bienes y Servicios de las plantaciones de especies maderables implica la generación de criterios económicos, sociales y ambientales para la toma de decisiones sobre el aprovechamiento sostenible de estos recursos. El presente trabajo tiene como propósito valorar los bienes y servicios que proporciona una plantación maderera establecida en el municipio de Turbaco, del departamento de Bolívar, y así, determinando los beneficios y cuantificarlos en términos monetarios demostrar que una plantación de especies maderables, con un manejo apropiado, pueden generar suficientes recursos financieros para que se conviertan en auto sostenibles, y a la vez genere rendimientos. Asignar valores económicos a esos bienes y servicios permitirá que se generen políticas de internalización de externalidades como lo son los incentivos por captura de CO2 y las excepciones tributarias, incentivos que trata la sociedad de retribuir a los usuarios o administradores de bosques por las externalidades positivas que conlleva la practica de actividades forestales y que en este trabajo son evaluados para determinar el beneficio adicional que genera esta actividad. Esta falta de internalización, esta falta de equilibrio, entre las ganancias sociales y las ganancias privadas, hace que estas actividades sean menos rentables de lo que son, debido a fallas de mercado y a políticas gubernamentales.
The SOFIA Massive (SOMA) Star Formation Survey. IV. Isolated Protostars
Creators: name: Fedriani, Ruben
name: Tan, Jonathan C.
name: Telkamp, Zoie
name: Zhang, Yichen
name: Yang, Yao-Lun
name: Liu, Mengyao
name: Law, Chi-Yan
name: Beltran, Maria T.
name: Rosero, Viviana
name: Tanaka, Kei E. I.
name: Cosentino, Giuliana
name: Gorai, Prasanta
name: Farias, Juan
name: Staff, Jan E.
name: De Buizer, James M.
name: Whitney, Barbara
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present $\sim10-40\,μ$m SOFIA-FORCAST images of 11 isolated protostars as part of the SOFIA Massive (SOMA) Star Formation Survey, with this morphological classification based on 37 $μ$m imaging. We develop an automated method to define source aperture size using the gradient of its background-subtracted enclosed flux and apply this to build spectral energy distributions (SEDs). We fit the SEDs with radiative transfer models, developed within the framework of turbulent core accretion (TCA) theory, to estimate key protostellar properties. Here, we release the sedcreator python package that carries out these methods. The SEDs are generally well fitted by the TCA models, from which we infer initial core masses $M_c$ ranging from $20-430\:M_\odot$, clump mass surface densities $Σ_{\rm cl}\sim0.3-1.7\:{\rm{g\:cm}}^{-2}$ and current protostellar masses $m_*\sim3-50\:M_\odot$. From a uniform analysis of the 40 sources in the full SOMA survey to date, we find that massive protostars form across a wide range of clump mass surface density environments, placing constraints on theories that predict a minimum threshold $Σ_{\rm cl}$ for massive star formation. However, the upper end of the $m_*-Σ_{\rm cl}$ distribution follows trends predicted by models of internal protostellar feedback that find greater star formation efficiency in higher $Σ_{\rm cl}$ conditions. We also investigate protostellar far-IR variability by comparison with IRAS data, finding no significant variation over an $\sim$40 year baseline.
description: Accepted for publication in ApJ. Published version including the proofs
The Role of Pharmaceutical Companies in the Opioid Crisis
Creators: name: Iyer, Sathwik
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: opioids
addiction
pharmaceutical companies
marketing

description: Today, the Opioid Crisis in the United States continues to rage on as pharmaceutical companies fight battles in both criminal and civil courts. While there have been several victories against pharmaceutical companies in recent months, there is still a long road ahead in terms of combatting the Opioid Crisis in the United States. The purpose of this thesis is to analyze the role of pharmaceutical companies and physicians in perpetuating the current Opioid Crisis taking place in America today. I conducted a literature review to determine and understand the different facets and avenues of action that pharmaceutical companies have taken to push opioids on the general public. First, I discussed and reviewed the different waves of the Opioid Crisis. This is followed by the presentation and discussion of three case studies that demonstrate the role that pharmaceutical companies and physicians play in the Opioid Crisis. Specifically, the legal court cases and settlements from the Sackler Family and Purdue Pharma as well as Janssen, McKesson, Cardinal Health, and AmerisourceBergen are discussed. Next, this thesis explores the role that pharmaceutical companies’ marketing strategy plays in understanding the Opioid Crisis. Finally, this work offers a conclusion that offers ideas for future research in this area.
title: CNS germinomas are characterized by global demethylation, chromosomal instability and mutational activation of the Kit-, Ras/Raf/Erk- and Akt-pathways
Creators: name: Pietsch, Torsten
name: Schulte, Laura
name: Steiger, Barbara
name: Denkhaus, Dorota
name: Vokuhl, Christian
name: Leuschner, Ivo
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: CNS germinomas represent a unique germ cell tumor entity characterized by uniform undifferentiated tumor cells and a high response rate to current treatment protocols. However, only limited information is available on their underlying genomic, epigenetic and biological alterations. In this study [for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Real-time correlators in chaotic quantum many-body systems
Creators: name: Nahum, Adam
name: Roy, Sthitadhi
name: Vijay, Sagar
name: Zhou, Tianci
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study real-time local correlators $\langle\mathcal{O}(\mathbf{x},t)\mathcal{O}(0,0)\rangle$ in chaotic quantum many-body systems. These correlators show universal structure at late times, determined by the dominant operator-space Feynman trajectories for the evolving operator $\mathcal{O}(\mathbf{x},t)$. The relevant trajectories involve the operator contracting to a point at both the initial and final time and so are structurally different from those dominating the out-of-time-order correlator. In the absence of conservation laws, correlations decay exponentially: $\langle\mathcal{O}(\mathbf{x},t)\mathcal{O}(0,0)\rangle\sim\exp(-s_\mathrm{eq} r(\mathbf{v}) t)$, where $\mathbf{v}= \mathbf{x}/ t$ defines a spacetime ray, and $r(\mathbf{v})$ is an associated decay rate. We express $r(\mathbf{v})$ in terms of cost functions for various spacetime structures. In 1+1D, operator histories can show a phase transition at a critical ray velocity $v_c$, where $r(\mathbf{v})$ is nonanalytic. At low $v$, the dominant Feynman histories are "fat": the operator grows to a size of order $t^α\gg 1$ before contracting to a point again. At high $v$ the trajectories are "thin": the operator always remains of order-one size. In a Haar-random unitary circuit, this transition maps to a simple binding transition for a pair of random walks (the two spatial boundaries of the operator). In higher dimensions, thin trajectories always dominate. We discuss ways to extract the butterfly velocity $v_B$ from the time-ordered correlator, rather than the OTOC. Correlators in the random circuit may alternatively be computed with an effective Ising-like model: a special feature of the Ising weights for the Haar brickwork circuit gives $v_c=v_B$. This work addresses lattice models, but also suggests the possibility of morphological phase transitions for real-time Feynman diagrams in quantum field theories.
description: 29 pages, 15 figures
Proyecto multicultural Sabadell - Colombia y cátedra virtual "El desplazamiento forzado en Colombia"
Creators: name: Cabarcas Orozco, Lilibeth
Publisher: name: Universidad de Cartagena
Year: 2006
Subjects: Población - Desplazamiento

description: Tesis (Trabajadora Social) -- Universidad de Cartagena. Facultad de Ciencias Sociales y Educación. Programa de Trabajo Social, 2006
description: Cambios demográficos y nuevos flujos migratorios de asentamientos que el desplazamiento forzoso está generando como la recomposición demográfica, desempleo y delincuencia en el departamento, en el distrito y la región Caribe en general.
title: Genome-wide copy number analysis, neuropathological classification and analysis of hedgehog activation: Histology reflects genetics and biology in medulloblastomas of young children
Creators: name: Kapitza, Elena
name: Denkhaus, Dorota
name: Zur Mühlen, Anja
name: Mynarek, Martin
name: Rutkowski, Stefan
name: Pietsch, Torsten
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: The identification of desmoplastic/nodular histology as an independent favourable prognostic marker in medulloblastoma (MB) of infancy has allowed the reduction of therapy in these patients to decrease longterm side-effects. Although we were able to demonstrate different origins and pathway activation[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Siegel Modular Forms and Black Hole Entropy
Creators: name: Belin, Alexandre
name: Castro, Alejandra
name: Gomes, Joao
name: Keller, Christoph A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We discuss the application of Siegel Modular Forms to Black Hole entropy counting. The role of the Igusa cusp form $χ_{10}$ in the D1D5P system is well-known, and its transformation properties are what allows precision microstate counting in this case. We apply a similar method to extract the Fourier coefficients of other Siegel modular and paramodular forms, and we show that they could serve as candidates for other types of black holes. We investigate the growth of their coefficients, identifying the dominant contributions and the leading logarithmic corrections in various regimes. We also discuss similarities and differences to the behavior of $χ_{10}$, and possible physical interpretations of such forms both from a microscopic and gravitational point of view.
description: 41 pages + appendices. V2: typos fixed and references added
Memory effect preserved time-local approach to noise spectrum of transport current
Creators: name: Xu, Yishan
name: Jin, Jinshuang
name: Wang, Shikuan
name: Yan, YiJing
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Within the second-order non-Markovian master equation description, we develop an efficient method for calculating the noise spectrum of transport current through interacting mesoscopic systems. By introducing proper current-related density operators, we propose a practical and very efficient time-local approach to compute the noise spectrum, including the asymmetric spectrum, which contains the full information of energy emission and absorption. We obtain an analytical formula of the current noise spectrum to characterize the nonequilibrium transport including electron-electron Coulomb interaction and the memory effect. We demonstrate the proposed method in transport through interacting-quantum-dots system, and find good agreement with the exact results under broad range of parameters.
description: 8 pages, 3 figures
Alteraciones visuales relacionadas con la práctica odontológica
Creators: name: Romero Duran, Ana
name: Trigos Yaruro, Slendy
Publisher: name: Universidad de Cartagena
Year: 2020
Subjects: subject: Odontología - Práctica profesional
subject: Odontología como profesión
subject: Facultad de odontalgia - Docentes
subject: Estudiantes de odontología - prácticas

description: Determinar los factores relacionados con trastornos visuales a los que se encuentran expuestos los estudiantes de odontología de la Universidad de Cartagena. Métodos. Se recolectaron datos con encuestas de 10 a 12 estudiantes en cada semestre (primero a décimo), para un total de 109 encuestados. Se realizó el muestreo aleatorio estratificado para la selección por cada curso que se encuentran o no ejerciendo prácticas clínicas odontológicas, a los cuales se les aplicó un instrumento tipo encuesta para obtener información de las características sociodemográficas y los factores de riesgo de las alteraciones visuales relacionadas con la práctica odontológica y aquellos que se presentan fuera de esta. Para el análisis de la información se utilizaron las pruebas estadísticas de frecuencia, media, rango, desviación estándar y porcentajes. Resultados. Se encontró que muchos de los estudiantes encuestados presentan o han desarrollado alguna alteración visual antes, durante o después de su ingreso a prácticas clínicas en la Facultad de Odontología de la Universidad de Cartagena. Conclusión. Las alteraciones visuales que se presentan en los estudiantes de Odontología de la Universidad de Cartagena, depende de muchos factores, ya sea del tiempo, la edad o del grado de exposición.
title: Functional and pathological insights of Carboxypeptidase E (CPE) effects on glioblastoma “go or grow” behavior
Creators: name: Ilina, Elena
name: Armento, Angela
name: Jennewein, Lukas
name: Penski, Cornelia
name: Zukunft, Sven
name: Behrends, Christian
name: Ronellenfitsch, Michael
name: Devraj, Kavi
name: Braczynski, Anne
name: Plate, Karl
name: Harter, Patrick
name: Naumann, Ulrike
name: Mittelbronn, Michel
Publisher: name: German Medical Science GMS Publishing House
Year: 2015
Subjects: subject: 610 Medical sciences; Medicine

description: Introduction: Glioblastoma (GBM) is the most common malignant brain tumor with a poor prognosis characterized by an extreme invasive potential. This hallmark of GBM is implicated into a so called „go or grow“ hypothesis: a behavior of tumor cells that describes their switch between proliferation[for full text, please go to the a.m. URL]
description: 60th Annual Meeting of the German Society for Neuropathology and Neuroanatomy (DGNN)
Comparing energy and entropy formulations for cosmic ray hydrodynamics
Creators: name: Weber, Matthias
name: Thomas, Timon
name: Pfrommer, Christoph
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Cosmic rays (CRs) play an important role in many astrophysical systems. Acting on plasma scales to galactic environments, CRs are usually modeled as a fluid, using the CR energy density as the evolving quantity. This method comes with the flaw that the corresponding CR evolution equation is not in conservative form as it contains an adiabatic source term that couples CRs to the thermal gas. In the absence of non-adiabatic changes, instead evolving the CR entropy density is a physically equivalent option that avoids this potential numerical inconsistency. In this work, we study both approaches for evolving CRs in the context of magneto-hydrodynamic (MHD) simulations using the massively parallel moving-mesh code AREPO. We investigate the performance of both methods in a sequence of shock-tube tests with various resolutions and shock Mach numbers. We find that the entropy-conserving scheme performs best for the idealized case of purely adiabatic CRs across the shock while both approaches yield similar results at lower resolution. In this setup, both schemes operate well and almost independently of the shock Mach number. Taking active CR acceleration at the shock into account, the energy-based method proves to be numerically much more stable and significantly more accurate in determining the shock velocity, in particular at low resolution, which is more typical for astrophysical large-scale simulations. For a more realistic application, we simulate the formation of several isolated galaxies at different halo masses and find that both numerical methods yield almost identical results with differences far below common astrophysical uncertainties.
description: 13 pages, 12 figures
Incidencia de cáncer de pene y frecuencia de enfermedad ganglionar en pacientes del Instituto Nacional de Cancerología 2007 - 2011
Creators: name: Londoño Reyes, John
Publisher: name: Universidad de Cartagena
Year: 2012
Subjects: Sistema urinario - Cáncer
Pene - Cáncer

description: Tesis (Especialista en Urología) -- Universidad de Cartagena, Facultad de Medicina. Departamento Quirúrgico, 2012
description: La presente investigación busca determinar la tasa de incidencia de cáncer de pene y la prevalencia de enfermedad ganglionar metastásica por cáncer de pene en pacientes que asisten consulta externa de urología oncologíca en el instituto nacional de cancerología
Assessment of contract administration practices of Hydropower Projects in Ethiopian Electric Power: A case study in Gibe III Hydro power Project.
Creators: name: Lulseged, Abinet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The purpose of this paper is to assess the contract administration practice of EEP in GIBE III Project. Questionnaires and Interview are primary data collection instruments which were distributed to the contract administration officers and the management members of EEP Gibe III Hydro Power Project equalling to 12 staffs and followed by descriptive and exploratory research design and Secondary data's were collected from the reports and contract agreements from the Ethiopian Electric Power, Gibe III HPP office. SPSS 20 software was used for the analyses of data collected. The result of this project work indicates that, the project was not effective in schedule management, in giving contract administration training to the contract administration staffs and in the availability of resources, which finally leads the project for suspension of work backed by delay, unnecessary interest payment and claim issues. Besides, the major challenges of the project which hinders the contract administration practice are reworks due to errors during construction, shortage of resources, design change during the project execution time for the power intake structure, Poor schedule management, poor feasibility study, delay in payments for the completed activities, the unforeseen geological condition at the base of the main am foundation level which lead the project to invest more additional time and incur additional cost. Based on the findings the researcher recommended, giving training to the concerned personnel on a contract administration practices, securing enough resources before the start of the execution of the project, developing a master schedules and work breakdown structures by incorporating important dates and milestones in the contract, securing enough resources before the start of the project and lesson learning from the previous successfully completed project.
Phonon trapping states as a witness for generation of phonon blockade in a hybrid micromaser system
Creators: name: Molinares, Hugo
name: Eremeev, Vitalie
name: Orszag, Miguel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a hybrid micromaser system consisting of an optical cavity with a moving mirror connected to a low temperature thermal bath, we demonstrate, both analytically and numerically, that for certain interaction times between a random atomic flux and the optomechanical cavity, vacuum phonon trapping states are generated. Furthermore, under the approach of the master equation with independent phonon and photon thermal baths, we show that the trapping of the phonons and photons is achieved for the same interaction times. The results also indicate that by increasing the cavity-oscillator coupling one may generate a coherent phonon state aside from the trapping states. Within the same hybrid system, but now connected to the squeezed phonon reservoir, a phonon blockade effect can be engineered. Moreover, we identify an interconnection between the trapping and blockade effects, particularly if one approaches the vacuum trapping state, strong phonon blockade can be achieved when the system is connected with a weakly squeezed phonon reservoir.
description: 11 pages, 6 figures
Universal scaling for recovery of Fourier's law in low-dimensional solids under momentum conservation
Creators: name: Sato, Dye SK
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Dynamic renormalization group (RG) of fluctuating viscoelastic equations is investigated to clarify the cause for numerically reported disappearance of anomalous heat conduction (recovery of Fourier's law) in low-dimensional momentum-conserving systems. RG flow is obtained explicitly for simplified two model cases: a one-dimensional continuous medium under low pressure and incompressible viscoelastic medium of arbitrary dimensions. Analyses of these clarify that the inviscid fixed point of contributing the anomalous heat conduction becomes unstable under the RG flow of nonzero elastic-wave speeds. The dynamic RG analysis further predicts a universal scaling of describing the crossover between the growth and saturation of observed heat conductivity, which is confirmed through the numerical experiments of Fermi-Pasta-Ulam $β$ (FPU-$β$) lattices.
description: 16 pages, 2 figure
Introducing k4.0s: a Model for Mixed-Criticality Container Orchestration in Industry 4.0 (extended)
Creators: name: Barletta, Marco
name: Cinque, Marcello
name: De Simone, Luigi
name: Della Corte, Raffaele
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences
subject: C.m

description: Time predictable edge cloud is seen as the answer for many arising needs in Industry 4.0 environments, since it is able to provide flexible, modular, and reconfigurable services with low latency and reduced costs. Orchestration systems are becoming the core component of clouds since they take decisions on the placement and lifecycle of software components. Current solutions start introducing real-time containers support for time predictability; however, these approaches lack of determinism as well as support for workloads requiring multiple levels of assurance/criticality. In this paper, we present k4.0s, an orchestration model for real-time and mixed-criticality environments, which includes timeliness, criticality and network requirements. The model leverages new abstractions for both node and jobs, e.g., node assurance, and requires novel monitoring strategies. We sketch an implementation of the proposal based on Kubernetes, and present an experimentation motivating the need for node assurance levels and adequate monitoring.
description: This paper is an extended version of the paper published at "2022 IEEE Intl Conf on Dependable, Autonomic and Secure Computing, Intl Conf on Pervasive Intelligence and Computing, Intl Conf on Cloud and Big Data Computing, Intl Conf on Cyber Science and Technology Congress"
Assessment of Causes of Delay in Water Supply Construction Projects: The case Study of World Vision Ethiopia
Creators: name: Mathiwos, Teketel
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2018

description: Construction delays are common problems in water supply projects in Ethiopia. The delays in construction projects are the major causes of project failure. If the delay is not identified and the corrective project management decision is not taken in time a project may incur extra cost and extension of project time, which gives rise to dissatisfaction to all the parties involved and nowadays it's becoming a major obstruction for their development for developing countries like Ethiopia. The research intended to identify the major causes that are led to project delay. To achieve the objective, the study employed descriptive research approach and both primary and secondary data were used. Questionnaires and desk review was tools used collect the data required. This research first identified 58 factors causing delay in Ethiopian water supply construction sector, and then the most common and critical causes of construction delay were evaluated by the data collected in a survey of program managers, regional coordinators and site engineers. The findings show that the main critical factors that cause construction delays in water supply sector in Ethiopia are: (1) adverse weather condition, (2) delay in approval of documents, (3) equipment Failure, (4) scarcity of material in the market,(5) poor supervision, (6) poor site management, (7) fluctuation of prices of materials, (8) change in subsurface conditions, (9) slowness in decision making process and, (10) low skills of labor.
Análisis administrativo de organizaciones juveniles de la ciudad de Cartagena de Indias
Creators: name: Badran Díaz, Benjamin
name: Valle Benedetti, José Luís
Publisher: name: Universidad de Cartagena
Year: 2000
Subjects: Cultura Organizacional
Organización de empresa

description: Tesis (Administrador de Empresas).--Universidad de Cartagena. Facultad de Ciencias Económicas. Programa de Administración de Empresas, 2000
description: El presente estudio tiene por objeto describir y analizar los paradigmas administrativos que deben utilizar las organizaciones juveniles que desarrollan trabajos en la ciudad de Cartagena para darles herramientas que les permiten ser más efectivas.
For adult patients in intensive care units, does intermittent enteral feeding have a different influence on circadian rhythm and metabolism markers when compared with continuous enteral feeding? A Scoping Review.
Creators: name: Raabe, Melanie
name: Bell, Jack
name: Hollis, Greta
name: Waldmann, Jana
name: Facey, Jacqueline
name: Hanna, Katherine
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Dietetics and Clinical Nutrition
subject: Medicine and Health Sciences
subject: Enteral Feeding
subject: Circadian rhythm

description: The topic of whether enteral nutrition timing influences circadian rhythm is of interest. This research is important because of the theoretical benefits of preservation of circadian rhythm. This scoping review could inform policy or identify gaps for future research studies.
Automated Design of Salient Object Detection Algorithms with Brain Programming
Creators: name: Olague, Gustavo
name: Menendez-Clavijo, Jose Armando
name: Olague, Matthieu
name: Ocampo, Arturo
name: Ibarra-Vazquez, Gerardo
name: Ochoa, Rocio
name: Pineda, Roberto
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Despite recent improvements in computer vision, artificial visual systems' design is still daunting since an explanation of visual computing algorithms remains elusive. Salient object detection is one problem that is still open due to the difficulty of understanding the brain's inner workings. Progress on this research area follows the traditional path of hand-made designs using neuroscience knowledge. In recent years two different approaches based on genetic programming appear to enhance their technique. One follows the idea of combining previous hand-made methods through genetic programming and fuzzy logic. The other approach consists of improving the inner computational structures of basic hand-made models through artificial evolution. This research work proposes expanding the artificial dorsal stream using a recent proposal to solve salient object detection problems. This approach uses the benefits of the two main aspects of this research area: fixation prediction and detection of salient objects. We decided to apply the fusion of visual saliency and image segmentation algorithms as a template. The proposed methodology discovers several critical structures in the template through artificial evolution. We present results on a benchmark designed by experts with outstanding results in comparison with the state-of-the-art.
description: 35 pages, 5 figures
Collisional S-Matrix for the Vibrational Dynamics of H+H2 by Quantum Computing
Creators: name: Wang, Yulun
name: Krstic, Predrag S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: An algorithm and a system of quantum circuits is developed and applied to compute accurately the S matrix for the transitions between vibrational states of H2 for collisions with H. The algorithm was applied to 100 eV laboratory collision energy at a quantum circuit simulator. The effects of the discretized dissociative continuum to the transition cross sections are carefully studied and accuracy and convergence of the results with the chosen parameters of the algorithm and the collision system are verified by comparison with a solution of the time-dependent Schrodinger equation using the classical algorithm as well as comparison with a few results from the literature.
description: 21 pages, 12 figrues
Packet Forwarding with a Locally Bursty Adversary
Creators: name: Rosenbaum, Will
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: We consider packet forwarding in the adversarial queueing theory (AQT) model introduced by Borodin et al. We introduce a refinement of the AQT $(ρ, σ)$-bounded adversary, which we call a \emph{locally bursty adversary} (LBA) that parameterizes injection patterns jointly by edge utilization and packet origin. For constant ($O(1)$) parameters, the LBA model is strictly more permissive than the $(ρ, σ)$ model. For example, there are injection patterns in the LBA model with constant parameters that can only be realized as $(ρ, σ)$-bounded injection patterns with $ρ+ σ= Ω(n)$ (where $n$ is the network size). We show that the LBA model (unlike the $(ρ, σ)$ model) is closed under packet bundling and discretization operations. Thus, the LBA model allows one to reduce the study of general (uniform) capacity networks and inhomogenous packet sizes to unit capacity networks with homogeneous packets. On the algorithmic side, we focus on information gathering networks -- i.e., networks in which all packets share a common destination, and the union of packet routes forms a tree. We show that the Odd-Even Downhill (OED) forwarding protocol described independently by Dobrev et al.\ and Patt-Shamir and Rosenbaum achieves buffer space usage of $O(\log n)$ against all LBAs with constant parameters. OED is a local protocol, but we show that the upper bound is tight even when compared to centralized protocols. Our lower bound for the LBA model is in contrast to the $(ρ, σ)$-model, where centralized protocols can achieve worst-case buffer space usage $O(1)$ for $ρ, σ= O(1)$, while the $O(\log n)$ upper bound for OED is optimal only for local protocols.
description: To appear in International Symposium on Distributed Computing (DISC) 2022
Utilización del adobe en la construcción de viviendas de bajo costo.
Creators: name: Quesada Arredondo, Ana Felicia
name: Velasquez Usuga, Shirley
Publisher: name: Universidad de Cartagena
Year: 2001
Subjects: Ladrillo
Mamposteria
Materiales de construcción - Producción

description: Tesis (Ingeniero Civil).--Universidad de Cartagena. Facultad de Ciencias E Ingenierías. Programa de Ingeniería Civil, 2001.
description: El presente estudio tiene por objeto evaluar la factibilidad técnica y económica del bloque de adobe como material de mampostería para la construcción de viviendas de bajo costo.