Abstract-The measurement of the solar resource has been important for applications in engineering, architecture, and hydrology, among others. For this reason it is necessary to know the behaviour of daily global solar radiation over long periods of time. The spatial distribution of solar radiation usually is presented via solar radiation maps that recorded the average daily solar radiation for each month of the year. In Colombia the last maps recompilation was published in 2004. Currently it has greater coverage of radiometers making measurements, for this reason exists more updated and more reliable records. Solar radiation maps for Cundiboyacense area were built based on the data of global radiation of the local network of the Regional Autonomous Corporation of Cundinamarca (CAR) are presented in this paper. Resumen-La medición del recurso solar es necesaria para aplicaciones en ingeniería, arquitectura, hidrología, entre otras. Por esta razón es necesario conocer el comportamiento de la radiación solar global diaria en periodos largos de tiempo. La distribución espacial de la radiación solar por lo general se presenta en forma de mapas de radiación solar que consignan la radiación solar diaria promedio para cada mes del año. En Colombia el último mapa fue publicado en el año 2004. En la actualidad se cuenta con un mayor cubrimiento de radiómetros lo que hace que se cuenten con registros más actualizados y más confiables. En el presente trabajo se presenta los mapas de radiación solar para la zona Cundiboyacense, construidos basados en los datos de radiación global de la red local de la CorporaciónAutónoma Regional de Cundinamarca (CAR). KeywordsPalabras Claves-Mapas, Radiación solar, Radiómetros, Región Cundiboyacense.Abstract-The measurement of the solar resource has beenimportant for applications in engineering, architecture, and hydrology, among others. For this reason it is necessary to know the behavior of daily global solar radiation over long periods of time. The spatial distribution of solar radiation usually is presented via solar radiation maps that recorded the average daily solar radiation for each month of the year. In Colombia the last maps recompilation was published in 2004. Currently it has greater coverage of radiometers making measurements, for this reason exists more updated and more reliable records. Solar radiation maps for Cundiboyacense area werebuilt based on the data of global radiation of the local network of the Regional Autonomous Corporation of Cundinamarca (CAR) are presented in this paper.
This paper presents a model for selecting and prioritizing in environments of uncertainty, a set of critical threats in a software development project and so, to minimize risks and to increase the level of performance from the user's requirements. The proposed model is based on the principles of artificial intelligence technique "Rough Set" and allows to obtain, to spread and to use the acquired knowledge by the team of work throughout the project characterizing, classifying and reducing in a recurrent and incremental way the possible threats to which the project may be exposed. The model was validated with state agencies projects in the city showing a progressive improvement of 16.48% in the performance from the user's requirements
New strategies, such as magnetic guidance of medicines, are used in cancer treatment. This work determined the topological characteristics of blood vessels in the breast with cancer. To remove the topology of the blood vessels mammogram imaging of cancer patients, image preprocessing was performed using conventional methods (Canny, Prewitt, and Sobel), with neural networks, and with light correction techniques, a 3D model was generated with finite element software to simulate velocity and blood flow, 700 nanoparticles of Magnetite were included, with a magnet of Neodymiun and the number of nanoparticles reaching the tumor was evaluated. The best results were obtained with the light correction method that improved the definition of blood vessels with the topology obtained and more particles were found to reach the magnetic field tumor compared when it is absent.
El artículo se analiza el marco jurídico que rige la función constitucional de las Fuerzas Militares, en aras de dar pleno cumplimiento a la misma, en cada uno de los momentos del Estado colombiano, incluyendo acápites sobre el fuero penal militar, los procedimientos judiciales y disciplinarios y el Manual de Derecho Operacional, para contribuir a que las tareas desplegadas por los miembros de las FF. MM. se ciñan a los postulados del Estado social de derecho, especialmente, dentro de la protección y respeto de los derechos humanos y el derecho internacional de los derechos humanos.
At present, there are different treatments against cancer, however, some of them, such as chemotherapy, are very invasive for the human body, since they affect healthy tissues. Magnetic targeting of drugs by means of magnetic nanoparticles is one of the alternative techniques that has emerged in the last decade, it is based on the targeting of drug delivery to the tumor without affecting healthy tissues, via of injected nanoparticles with diamagnetic properties directly into the bloodstream, driven by external magnetic fields produced by permanent magnets. This technique in literature is often come upon as MTD for its acronym in English. In this work, a numerical model was developed in order to quantify the loss of nanoparticles in the process of interaction with the walls of the bloodstream. For this model, the Kinetic technique was used, quantifying the probability of adsorption and absorption taking into account the following parameters: diameter of the nanoparticle (200 nm), density of the nanoparticle (6450 kg · m -3), diameter of the cell endothelial (0.1 μm - 1 μm), transcellular pores of the fenestrated endothelium (70 nm) and modulus of elasticity of the endothelium (4.1 ± 1.7 kPa).
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