Colecciones Institucionales

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Browsing Colecciones Institucionales by browse.metadata.fuente "Historial Académico"

Now showing 1 - 20 of 296
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    50-years of climate extreme indices trends and inventory of natural disasters in Chilean cities (1965-2015)
    (Springer, 2019) Henríquez, Cristián; Qüense, Jorge; Villarroel, Claudia; Mallea, Cindy; Henríquez, Cristián; Romero, Hugo
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    A Comprehensive Review of the Natural History of Helicobacter Pylori Infection Children
    (2000) Harris Diez, Paul Richard; Atherton, J; Gold, B; Goodman, K; Guarner, J; Madrazo de la Garza, A; Muñoz, O; Pérez-Pérez, G; Torres, J
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    A Latin Spring? Examining digital diffusion and youth bulges in forecasting political change in Latin America
    (Routledge, 2014) Bachmann C., Ingrid; Groshek, Jacob; Brewer, Anita; Welp, Yanina
    The story is quite different in the countries that experienced the Arab Spring, where autocratic governments were still the rule in the twenty-first century. Arguably, shifts in democratic countries would be more likely to be measured rather than major revolutions like the ones that ended up ousting Hosni Mubarak in Egypt and Ben Ali in Tunisia. Conventional wisdom suggests that mass media and media diffusion are important for public deliberation, and play an important role fostering and maintaining democracy and stable societies. Research from political science and mass communication stresses the democratizing role of media. Indeed, in the last decades both neoliberal economics and populist politics have coexisted in several Latin American countries, for both left- and right-leaning governments. On the whole, the region has gone through overall economic stabilization, although political conflicts related to poorly distributed income, high unemployment, and lack of opportunities for young and indigenous people persist in most of the countries.
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    A Lessons-learned Mobile System for Construction Companies: Motivation and Design
    (2014) Ferrada Calvo, Ximena Veronica; Sepúlveda Fernández, Marcos Ernesto; Serpell Bley, Alfredo; Daniela Núñez; Neyem, Andres
    Construction projects are an important source of organizational knowledge. Though, it is common to find that most lessons learned in construction projects are lost because most companies never take care of collecting them. To change this situation, a mobile lesson-learned system application with interface for smartphones and web in a cloud environment is proposed. This article focuses on the design of a prototype of the system and the main characteristics of its architecture. It is concluded that the application of mobile technology on the field would facilitate the use of the system, been an appropriate tool for knowledge management. (C) 2014 The Authors. Published by Elsevier Ltd.
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    A review of steel plate shear wall design requirements and research
    (2007) López-García D; Berman JW; Bruneau M; Vian D
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    A Systematic Approach for Evaluating Innovation Management in Construction Companies
    (2014) Serpell Bley, Alfredo; Álvarez Parra, Romina Vanesa
    The increasing competition within the construction industry has created a growing concern for innovation, being appreciated as an important lever for competitive advantage. However, despite its need, there are some critical barriers that make innovation in construction very difficult. In addition, the perceived risk of innovation is almost unacceptable to the sector's culture. These factors limit the innovation efforts being made. Thus, appropriate mechanisms are needed to overcome these limitations and propose actions to promote innovation and innovation management in constructions' firms. The aim of this paper is to describe an approach to innovation management that includes a system for evaluating the status of innovation management in construction companies (SEGi by its acronym in Spanish), i.e., all activities undertaken by a company to integrate innovation opportunities to improve its performance. The system has been structured based on both quantitative and qualitative methods, whose application allows evaluating the state of innovation management and generating proposals for actions to solve the detected limitations. The research methodology is described together with the development of the system for evaluating innovation management, the results of the study of three construction companies that participated in the application of the system and the main conclusions of the study. The proposed evaluation system can be used to promote the development and improvement of innovation capabilities within construction companies. Additional results of the study are the identification of six major innovation drivers that are important for construction companies. (C) 2014 The Authors. Published by Elsevier Ltd. This is an open access article under he CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/3.0/).
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    Abnormalities of lipid metabolism, gallstone disease and gallbladder function
    (2011) Zanlungo Matsuhiro, Silvana; Miquel P., Juan Francisco; Rigotti Rivera, Attilio; Nervi, Flavio
    Gallstone disease is highly prevalent with a complex and multifactorial pathogenesis. Gallstones are closely related to the metabolic syndrome associated disease conditions in which abnormal regulation of lipid metabolism secondary to insulin resistance plays a major pathogenic role. Insulin resistance increases biliary cholesterol secretion and affects gallbladder (GB) motility. Regulation of lipid metabolism and energy homeostasis is complex and the GB has been considered to have a minor regulatory role in both the intestinal absorption of lipids and metabolic homeostasis of the whole body. In fact, ablation of the GB does not affect nutrient absorption or the ability to lead a normal life. GB function regulates the cycling of bile salts through the enterohepatic circulation. Bile salts have important signaling effects that can affect whole body metabolic homeostasis. The GB and intestinal mucosa are rich in the hormone FGF15/19 and the receptor TGR5, which participate in metabolic regulation. Recent evidence supports the hypothesis that cholecystectomy may not be innocuous and that the GB has a significant role in the regulation of hepatic triglyceride metabolism. This article provides information regarding recent advances in the understanding of the interaction between regulation of lipid metabolism, insulin resistance, gallstone disease and GB function.
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    Actrices chilenas de frente y perfil: breve itinerario para una fisonomía notable
    (Ocho Libros Editores, 2016) Hurtado, María de la Luz
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    Actualizar memoria como proyecto de futuro
    (Universidad de Valparaíso, 2011) Hurtado, María de la Luz
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    Adaptación de la Escala Atribucional de Motivación de Logro de Manassero y Vázquez
    (2009) Morales Bueno, Emma Patricia; Gómez Nocetti, Viviana
    En el presente artículo se reportan los resultados del estudio de validez de constructo y fiabilidad de una Escala Atribucional de Motivación de Logro (EAML), adaptada para su aplicación en contextos educativos universitarios, en los cuales se implementan estrategias de aprendizaje colaborativo. En la nueva escala (EAML-M) se reemplazó la dimensión original de Motivación de Competencia del Profesor por la dimensión Motivación de Interacción, en la cual se incorporaron aspectos relacionados con la percepción del estudiante acerca de la influencia de la interacción con sus pares y el profesor, en un contexto de aprendizaje colaborativo. La escala fue aplicada con estudiantes peruanos de primer año de ingeniería, pertenecientes a un curso que implementa la metodología de Aprendizaje Basado en Problemas (ABP). Los resultados del Análisis Factorial Exploratorio permiten identificar seis dimensiones en la nueva escala. La confiabilidad estimada es buena (α: 0,9026). Adicionalmente, el perfil dimensional obtenido muestra características que pueden orientar futuras investigaciones en esta línea.
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    Advances in understanding respiratory syncytial virus infection in airway epithelial cells and consequential effects on the immune response
    (2013) Bueno Ramírez, Susan Marcela; Cespedes Donoso, Pablo Francisco; González, Pablo A.; Kalergis Parra, Alexis Mikes; Lay Remolcoi, Margarita Kam-len; León, Miguel A.; Riedel Soria, Claudia
    This article reviews aspects of respiratory syncytial virus (RSV) infection in airway epithelial cells (AECs), including cytopathogenesis, entry, replication and the induction of immune response to the virus, including a new role for thymic stromal lymphopoietin in RSV immunopathology. (C) 2012 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.
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    AFM Study of Elastic Module of Physical-Vapor-Deposited Phospholipid Membranes
    (2018) Volkmann, Ulrich Georg; Catalán López, Rodrigo Esteban; Retamal Ponce, María José; Cisternas Fruns, Marcelo Andrés; Moraga Vent, Nicolás Andrés; Díaz Díaz, Diego Ignacio; Corrales, Tomás P.; Pérez-Acle, Tomás; Soto Arriaza, Marco Antonio; Huber, Patrick
    The physical study of artificial phospholipid membranes on solid substrates has become a relevant way to gain insights into the physical behavior of cell membranes. The study of mechanical properties of artificial membranes (lab-made) has become possible with the use of atomic force microscopy. Here, we analyze the Young's modulus and adhesion force of several phospholipidic membranes as a function of temperature using Scanning Force Spectroscopy (SFS). Phospholipids were deposited onto double-polished silicon substrates by physical vapor deposition (PVD), as we have recently reported [1, 2]. We have used Raman spectroscopy to show that the chemical structure of our deposited phospholipid remains unaltered after PVD. After PVD we performed AFM and SFS measurements on the following phospholipids: DPPC, DMPC and DSPC. Measurements using AFM in liquid confirm the self-assembly of the phospholipid bilayer. By using SFS of the deposited membrane in liquid, we observe 2 phase transitions, both in Younǵs Modulus, as well as adhesion channels. The measured phase transitions are consistent with the ripple-gel transition and the gel-liquid crystalline phases. Furthermore, we have studied the frequency dependence of these phase transitions by changing the tip velocity in SFS experiments. Supported by FONDECYT grant # 1141105 (UGV), FONDECYT INICIACION grant # 11160664 (TPC), CONICYT Fellowships (RC and MC), Postdoctoral Fellowship FONDECYT 3160803 (MJR) and CONICYT-PIA ACT 1409. [1] María J. Retamal, Marcelo A. Cisternas, Sebastian E. Gutierrez-Maldonado, Tomas Perez-Acle, Birger Seifert, Mark Busch, Patrick Huber and Ulrich G. Volkmann, J. Chem. Phys. 141, 104201 (2014). [2] María Jose Retamal, Tomas P. Corrales, Marcelo A. Cisternas, Nicolas H. Moraga, Diego I. Diaz, Rodrigo E. Catalan, Birger Seifert, Patrick Huber, and Ulrich G. Volkmann. Biomacromolecules 17 (3), 1142 (2016).
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    Análisis de la enunciación: distinciones operativas para un análisis dialógico del discurso
    (2007) Larraín, Antonia; Medina Morales, Lorena
    El análisis de la enunciación, entendido como un tipo de análisis del discurso que concibe el discurso como siempre marcado subjetivamente, representa para las humanidades, y específicamente par la psicología, una herramienta de gran valor. No obstante lo anterior, este tipo de análisis carece de cohesión y consenso, permaneciendo como un conjunto de planteamientos aislados. Por otro lado, es un tipo de análisis escasamente difundido y poco conocido en el ámbito de las ciencias sociales. Con el fin de difundir este tipo de herramienta, el presente artículo propone un modelo de análisis (categorías y procedimientos), frutos de la discusión e integración del trabajo de sus principales exponentes: Kerbrat-Orecchioni (1993) y Ducrot (1986).
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    Análisis de un proceso de práctica profesional orientado a la reflexión docente
    (2017) Rivas Catricheo, Hernán; Vásquez Ortiz, Claudia; Pincheira Hauck Nataly Goreti; Contreras, J. M.; Arteaga, P.; Cañadas, G. R.; Gea, M. M.; Giacomone, B.; López Martín, M. M.
    La reflexión sobre la práctica es reconocida como una competencia importante en losprocesos de formación inicial y continua del profesorado. En el caso de la formacióninicial, la práctica profesional constituye una instancia privilegiada para favorecer procesosreflexivos, dada la oportunidad que tienen los futuros profesores de asumir por completo elrol de profesor en espacios naturales de enseñanza. Sin embargo, se requiere contar conherramientas que orienten una reflexión fundada. En este estudio aplicamos la noción dehecho didáctico significativo en conjunto con una guía de reflexión, ambos basados en lanoción de idoneidad didáctica, con el fin de orientar el análisis y la reflexión durante unproceso de práctica profesional enfocado en la enseñanza de la matemática.
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    Analysis of Multidisciplinary Collaboration in Primary Healthcare: The Chilean Case
    (2017) Saint-Pierre, Cecilia; Sepúlveda, Marcos; Herskovic, Valeria
    Around 10% of the population suffers from diabetes, and this percentage is expected to rise. Healthcare guidelines propose a multidisciplinary, collaborative approach for treatment. However, there is little data to understand whether healthcare professionals are actually collaborating and how this collaboration takes place. We analyzed 4 years of data from 3 healthcare centers in Chile, corresponding to 2,838 patients. Patients were classified according to the composition of the healthcare team into four categories: highly multidisciplinary teams, specialized teams, physician-nurse centered teams, and non-collaborative treatment. Our results show that team prevalence is related to patient and healthcare center characteristics.
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    Andamios de retiro gradual. Parte 2: Apoyos a la construcción de explicaciones en ciencia primaria
    (2020) Sommer Lohrmann, Martin; Cabello González, Valeria Magaly
    El desarrollo de la competencia de explicar científicamente es un desafío para la educación primaria ya que combina habilidades cognitivas, lingüísticas y sustento científico. En contextos hispanoparlantes la investigación para orientar pedagógicamente la construcción de explicaciones en educación primaria es escasa. Este artículo aborda la implementación de un diseño pedagógico para la construcción de explicaciones científicas escolares con apoyo en un sistema de andamiajes. Se buscó facilitar el desarrollo de las habilidades para explicar y, a su vez, la adquisición de conceptos nuevos que forman parte del sustento científico. Los resultados muestran que los y las estudiantes progresaron paulatinamente en la construcción de explicaciones mientras se aplicó el andamiaje. Se discuten orientaciones para el diseño pedagógico de andamios que permitan apoyar la construcción de explicaciones científicas escolares en primaria, con base en esta experiencia, así como del sustento teórico y empírico detallado en la primera parte de este trabajo.
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    Antithrombotic treatments, outcomes, and prognostic factors in acute childhood-onset arterial ischemic stroke: a multicentre, observational, cohort study
    (2009) Hernández Chávez, Marta Isabel; Goldenberg, Neil A.; Bernard, Timothy J.; Fullerton, Heather; Gordon, Anne; Veber, Gabrielle de; International Pediatric Stroke Study Group