421 research outputs found

    Datos, Portales de Gobierno y Gobierno Abierto: Ranking de portales de gobierno estatal 2016

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    El ranking 2016 muestra nuevamente la importancia de los portales de gobierno como herramientas para poner al alcance de los ciudadanos tanto información como servicios del gobierno. La evaluación distingue el esfuerzo de los gobiernos estatales que se han ocupado de reinventarse, transformar sus organizaciones, usar sus conocimientos y su aprendizaje previo para innovar, proponer, y reconstruir sus portales. El diseño e implementación de estrategias tecnológicas y los correspondientes cambios en los marcos normativos y legales son sin duda un promotor de la mejora de los portales estatales y de la calidad de la información y servicios disponibles en ellos. En este año de la evaluación se identificó que la veda electoral puede representar un aspecto estructural en el comportamiento del ranking que puede sesgar los resultados, pero que a su vez implica un potencial riesgo en la administración de los portales y proyectos de TICs que las gestiones estatales deberán enfrentar cíclicamente para no afectar a los usuarios

    Ranking de portales del gobierno estatal 2015

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    Hace 10 años publicamos por primera vez la evaluación y ranking de los portales del gobierno estatal. Nuestra intención no se ha modificado. Desde que iniciamos este esfuerzo, nuestro objetivo ha sido facilitar la labor de benchmarking para los encargados del gobierno digital a nivel estatal, como una herramienta más para la mejora continua de los portales de gobierno y el beneficio de los ciudadanos. La tecnología, no obstante, ha evolucionado de forma importante en estos 10 años

    THE IMPORTANCE OF MANUFACTURING DRAWINGS IN THE DESIGN PROCESS: A DIDACTIC CONTRIBUTION TO ENGINEERING EDUCATION

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    THE IMPORTANCE OF MANUFACTURING DRAWINGS IN THE DESIGN PROCESS: A DIDACTIC CONTRIBUTION TO ENGINEERING EDUCATIONAbstracturing the direct design or reverse engineering process of products and machinery, various geometric and manufacturing information is generated according to the phases or stages of development applied during a project in different subjects. Much of this information is not used or lost and students face various problems when generating manufacturing drawings. This article discusses the importance of manufacturing drawings during the direct design process and its implications for engineering education. To generate the design information, the concept of manufacturing primitive and a classification of the manufacturing drawings that follow the stages of direct design are applied. It is using a case study to show the process of generating and documenting the information. The importance of transmitting knowledge to the student is necessary for their academic and professional training. Using tools that are actually used in industrial practice within their processes. Improving the results of students in their subjects and in academic or professional stays. Currently, this acquired knowledge has also been important in academic exchanges because the same way of working is being implemented worldwide.Keyword: Engineering Education, Manufacturing Drawings, Manufacturing

    LEARNING BY DOING ON COMPUTATIONAL FLUID DYNAMICS

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    ABSTRACT This work involves the methodology used in the University of Valladolid for Mechanical Engineering students to learn Computational Fluid Dynamics playing an active role. Students pretend to be engineers in a consulting or design office carrying out a fluid mechanics scale down projects. Later they act as reviewers evaluating a project from a colleague. There is a deeper understanding of the topic when they need to discuss the strategies to accomplish the project, to write a technical report and finally to justify the evaluation of other works. Furthermore, they develop their critical thought, writing skills and synthesis capacity. Multimedia material from other institutions that review the concepts learned in the course can be a suitable way to improve the understanding of concepts. INTRODUCTION The computational fluid dynamics (CFD) is a key tool in mechanical engineering because of the useful information provided at a very low cost that reduces the a posteriori parametric experimental studies. Learning CFD is an important investment for Mechanical Engineering undergraduate students. They need to know the methodology and to identify the weaknesses and strength of commercial codes

    Repaso Audiovisual de los Contenidos del Curso

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    En este trabajo se propone como tarea de refuerzo, repasar los conceptos aprendidos durante el curso mediante el visionado de videos elaborados por otras instituciones académicas. Se requiere por parte del profesor, un cuidado proceso de selección basado en criterios como el nivel de conocimiento, ejemplos de aplicaciones reales, duración del vídeo, y claridad del desarrollo matemático. El colofón al visionado del material es la cumplimentación de un formulario final. Los alumnos tienen acceso al material en los seminarios finales del curso, donde en grupos reducidos pueden visionar los vídeos de duración aproximada de 3 minutos, desde sus teléfonos inteligentes usando la red wifi. A continuación completan un formulario en red con preguntas que tratan de identificar el nivel de comprensión de los conceptos utilizados así como los puntos débiles de cada tema. Así, el visionado de en torno a 10 videos permiten el repaso de los contenidos aprendidos durante todo el programa del curso. Se trata de motivar al repaso de los temas de una forma sencilla y ágil a la vez que se incrementa el grado de confianza con el que el alumno se enfrenta al examen

    Estrategias para el Aprendizaje Activo en CFD

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    Las nuevas tecnologías de la comunicación favorecen el acceso a la información, la difusión de las opiniones y pueden actuar como una red social. Estas aplicaciones bien empleadas pueden ser una valiosa herramienta de trabajo en el entorno del aprendizaje. El triángulo de aprendizaje de Edgar Dale establece que se asimila el 90% de lo que de hace y el 70% de lo que se dice frente al 10% de lo que se lee. Bajo esta premisa, es necesario que el alumno asuma un papel activo en su proceso de aprendizaje. Este trabajo recoge experiencias en la materia optativa de Modelado Numérico de Sistemas Sólidos y Fluidos del grado en Ingenierías Mecánica para motivar el aprendizaje activo. A modo de resumen, las tareas utilizadas han sido: la utilización de talleres de trabajo colaborativo, evaluación por pares entre los alumnos, acceso a material multimedia mediante códigos QR (respuesta rápida), realización de formularios de repaso entre otros. El éxito de la metodología utilizada se materializa en un mayor grado de comprensión de la materia y de las aplicaciones a escala real de los talleres realizados, así como la adquisición de destrezas transversales como desarrollo del pensamiento crítico, capacidad de trabajo en equipo, redacción de informes técnicos y evaluación justificada de los mismos

    Advances and Trends in the Physicochemical Properties of Corn Starch Blends

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    Corn starch is one of the most widely used biopolymers in the world for various applications, due to its high production, renewable, low cost, non-toxic, biodegradable and provide great stereochemical diversity by presenting a complex structure with unique qualities that they depend on multiple factors to obtain special properties for a specific use and/or of interest. From the synthesis of the starch granule to its extraction for its subsequent use, it promotes innovative characteristics, presenting infinite functionalities applicable and/or as a substitute for synthetic polymers. However, some limitations of hydrophilicity, thermal and mechanical properties, rapid degradability and strong intra and intermolecular bonds of the polymer chains make their use difficult in the medium and long term. Enzymatic, chemical and physical methods continue to be used today, creating by-products such as polluting waste and which can be costly. Therefore, the polymeric modification of the starch granule is necessary to mitigate limitations and by-products, currently the use of starch blends is a promising trend to produce new and innovative desirable properties. This chapter describes the advances and trends in the physicochemical properties of corn starch blends Zea mays L. as a potential material, leader for its attractive properties and benefits that it has to offer, demonstrating that when combined with other starches from different botanical sources and/or molecular structure present unique and unequaled synergisms

    Role of age and comorbidities in mortality of patients with infective endocarditis

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    [Purpose]: The aim of this study was to analyse the characteristics of patients with IE in three groups of age and to assess the ability of age and the Charlson Comorbidity Index (CCI) to predict mortality. [Methods]: Prospective cohort study of all patients with IE included in the GAMES Spanish database between 2008 and 2015.Patients were stratified into three age groups:<65 years,65 to 80 years,and ≥ 80 years.The area under the receiver-operating characteristic (AUROC) curve was calculated to quantify the diagnostic accuracy of the CCI to predict mortality risk. [Results]: A total of 3120 patients with IE (1327 < 65 years;1291 65-80 years;502 ≥ 80 years) were enrolled.Fever and heart failure were the most common presentations of IE, with no differences among age groups.Patients ≥80 years who underwent surgery were significantly lower compared with other age groups (14.3%,65 years; 20.5%,65-79 years; 31.3%,≥80 years). In-hospital mortality was lower in the <65-year group (20.3%,<65 years;30.1%,65-79 years;34.7%,≥80 years;p < 0.001) as well as 1-year mortality (3.2%, <65 years; 5.5%, 65-80 years;7.6%,≥80 years; p = 0.003).Independent predictors of mortality were age ≥ 80 years (hazard ratio [HR]:2.78;95% confidence interval [CI]:2.32–3.34), CCI ≥ 3 (HR:1.62; 95% CI:1.39–1.88),and non-performed surgery (HR:1.64;95% CI:11.16–1.58).When the three age groups were compared,the AUROC curve for CCI was significantly larger for patients aged <65 years(p < 0.001) for both in-hospital and 1-year mortality. [Conclusion]: There were no differences in the clinical presentation of IE between the groups. Age ≥ 80 years, high comorbidity (measured by CCI),and non-performance of surgery were independent predictors of mortality in patients with IE.CCI could help to identify those patients with IE and surgical indication who present a lower risk of in-hospital and 1-year mortality after surgery, especially in the <65-year group

    Optimasi Portofolio Resiko Menggunakan Model Markowitz MVO Dikaitkan dengan Keterbatasan Manusia dalam Memprediksi Masa Depan dalam Perspektif Al-Qur`an

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    Risk portfolio on modern finance has become increasingly technical, requiring the use of sophisticated mathematical tools in both research and practice. Since companies cannot insure themselves completely against risk, as human incompetence in predicting the future precisely that written in Al-Quran surah Luqman verse 34, they have to manage it to yield an optimal portfolio. The objective here is to minimize the variance among all portfolios, or alternatively, to maximize expected return among all portfolios that has at least a certain expected return. Furthermore, this study focuses on optimizing risk portfolio so called Markowitz MVO (Mean-Variance Optimization). Some theoretical frameworks for analysis are arithmetic mean, geometric mean, variance, covariance, linear programming, and quadratic programming. Moreover, finding a minimum variance portfolio produces a convex quadratic programming, that is minimizing the objective function ðð¥with constraintsð ð 𥠥 ðandð´ð¥ = ð. The outcome of this research is the solution of optimal risk portofolio in some investments that could be finished smoothly using MATLAB R2007b software together with its graphic analysis

    Impact of COVID-19 on cardiovascular testing in the United States versus the rest of the world

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    Objectives: This study sought to quantify and compare the decline in volumes of cardiovascular procedures between the United States and non-US institutions during the early phase of the coronavirus disease-2019 (COVID-19) pandemic. Background: The COVID-19 pandemic has disrupted the care of many non-COVID-19 illnesses. Reductions in diagnostic cardiovascular testing around the world have led to concerns over the implications of reduced testing for cardiovascular disease (CVD) morbidity and mortality. Methods: Data were submitted to the INCAPS-COVID (International Atomic Energy Agency Non-Invasive Cardiology Protocols Study of COVID-19), a multinational registry comprising 909 institutions in 108 countries (including 155 facilities in 40 U.S. states), assessing the impact of the COVID-19 pandemic on volumes of diagnostic cardiovascular procedures. Data were obtained for April 2020 and compared with volumes of baseline procedures from March 2019. We compared laboratory characteristics, practices, and procedure volumes between U.S. and non-U.S. facilities and between U.S. geographic regions and identified factors associated with volume reduction in the United States. Results: Reductions in the volumes of procedures in the United States were similar to those in non-U.S. facilities (68% vs. 63%, respectively; p = 0.237), although U.S. facilities reported greater reductions in invasive coronary angiography (69% vs. 53%, respectively; p < 0.001). Significantly more U.S. facilities reported increased use of telehealth and patient screening measures than non-U.S. facilities, such as temperature checks, symptom screenings, and COVID-19 testing. Reductions in volumes of procedures differed between U.S. regions, with larger declines observed in the Northeast (76%) and Midwest (74%) than in the South (62%) and West (44%). Prevalence of COVID-19, staff redeployments, outpatient centers, and urban centers were associated with greater reductions in volume in U.S. facilities in a multivariable analysis. Conclusions: We observed marked reductions in U.S. cardiovascular testing in the early phase of the pandemic and significant variability between U.S. regions. The association between reductions of volumes and COVID-19 prevalence in the United States highlighted the need for proactive efforts to maintain access to cardiovascular testing in areas most affected by outbreaks of COVID-19 infection
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