Political psychology as a conceptual tool for understanding political subject’s behavior

This work is intended to analyze how it is possible to bring forward some considerations from political psychology (a conceptual tool seldom applied in Colombia) in order to establish the way political subjects are constructed from the happenings or junctures whereby the mass moves and performs its control processes. The mass is the fundamental object of the political analysis from this subdiscipline of social psychology. The article presents a review of the concept of political psychology in the first place. Afterward, the political subject is contextualized, and finally, the connection between the two concepts developed in the article is articulated.Se analiza cómo desde la Psicología política, herramienta conceptual de poco uso y aplicación en Colombia, es posible exponer algunas consideraciones que permiten establecer la forma como el Sujeto político se construye como tal en los sucesos y acontecimientos de índole coyuntural en los que la masa (objeto fundamental para el análisis político desde esta subdisciplina de la psicología social) se moviliza y efectúa procesos de control. En primer lugar, se presentará una revisión sobre el concepto de Psicología política. Un segundo punto será la presentación del denominado Sujeto político. Finalmente, se realizará la articulación entre ambos conceptos desarrollados en el artículo

Chemical sensor using single crystal diamond plates interrogated with charge-based deep-level transient spectroscopy based on the Quantum Fingerprint[TM] model : instrumentation and methodology

Title from PDF of title page (University of Missouri--Columbia, viewed on May 21, 2012).The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file.Dissertation advisor: Dr. Mark A. PrelasVita."July 2011"In recent years, diamond has received a great deal of interest as a potential chemical sensor material due to its mechanical robustness, and its capacity to modify its electrical characteristics according to surface termination and adsorbed chemical agents. Previous studies have suggested that an adsorbed molecule can localize a carrier in the same way a surface trap can. The present work focuses on molecules chemisorbed to the oxygen-terminated surfaces of high-purity CVD single crystal (100) diamond plates. Potentially, a given adsorbed molecule can be uniquely related to a new surface energy state, thus producing a characteristic spectral signature. This technology is named Quantum Fingerprinting[trademark]. To investigate the adsorbate-induced surface energy states, an ultra-sensitive, non-steady state interrogation device called Charge-based Deep-Level Transient Spectrometer (Q-DLTS) was built and tested. This system was used to investigate the effects of various basic alcohols and benzene derivatives on the surface states of the sensor. It was found that both types of molecules produce a large primary spectral peak and a smaller, transient one. For alcohol, both peaks display a consistent increase in amplitude as the molecule's carbon content becomes larger. The secondary peak shows a faster emission rate with heavier alcohol molecules. This was attributed to the appearance of new surface states. The secondary peak of the benzene derivative disappears a few minutes after the initial introduction. This is believed to be the result of physisorption.Includes bibliographical reference

Green Security Plugin for Pervasive Computing using the HADAS toolkit

Energy is a critical resource in pervasive computing devices. However, information about energy consumption is not directly accessible through software development environments, making it difficult to reuse the knowledge provided by existing energy-consumption experimental studies. To address this limitation, this paper presents a solution to enrich Android Studio with energy consumption information. We have developed a Green Security Plugin that provides energy-aware information to developers that make use of Android Security API. This plugin has been developed taking advantage of the functionalities provided by the HADAS toolkit. HADAS is a repository of energy consuming concerns in which researchers can store the energy measures obtained during their experimental studies and developers can perform a sustainability analysis to make green design/implementation decisions.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tec

Modelling the Fluid Mechanics of Cilia and Flagella in Reproduction and Development

Cilia and flagella are actively bending slender organelles, performing functions such as motility, feeding and embryonic symmetry breaking. We review the mechanics of viscous-dominated microscale flow, including time-reversal symmetry, drag anisotropy of slender bodies, and wall effects. We focus on the fundamental force singularity, higher order multipoles, and the method of images, providing physical insight and forming a basis for computational approaches. Two biological problems are then considered in more detail: (1) left-right symmetry breaking flow in the node, a microscopic structure in developing vertebrate embryos, and (2) motility of microswimmers through non-Newtonian fluids. Our model of the embryonic node reveals how particle transport associated with morphogenesis is modulated by the gradual emergence of cilium posterior tilt. Our model of swimming makes use of force distributions within a body-conforming finite element framework, allowing the solution of nonlinear inertialess Carreau flow. We find that a three-sphere model swimmer and a model sperm are similarly affected by shear-thinning; in both cases swimming due to a prescribed beat is enhanced by shear-thinning, with optimal Deborah number around 0.8. The sperm exhibits an almost perfect linear relationship between velocity and the logarithm of the ratio of zero to infinite shear viscosity, with shear-thickening hindering cell progress.Comment: 20 pages, 24 figure

Modelación matemática mediante la simulación en dinámica de sistema

En este taller se desarrollarán modelos matemáticos, utilizando la simulación discreta y continua con dinámica de sistemas, mediante plataformas informáticas, como Vensim y Arena, ambos libres para fines académicos. Se formulará y resolverá de forma rigurosa, modelos en sistemas de ecuaciones diferenciales y/o algebraicos, como las ecuaciones de Lotka – Volterra para la dinámica de poblaciones, los modelos SIR para la dinámica de enfermedades y las ecuaciones de Lanchester y modelos de optimización de investigación de operaciones, como los modelos de asignación, entre otros. Mediante las herramientas de extrapolación, ajuste de distribución a datos estadísticos, matrices de criticidad y herramientas estadísticas de ingreso y proyección de datos (Lookup), incorporadas como complementos en los softwares de simulación, estudiaremos las soluciones obtenidas de los modelos matemáticos en diferentes escenarios, permitiendo además indagar sobre la optimización de estos sistemas. Finalmente, se analizarán relaciones entre algunos modelos estudiados y los modelos que gobiernan la propagación de la información

Physics of Rheologically-Enhanced Propulsion: Different Strokes in Generalized Stokes

Shear-thinning is an important rheological property of many biological fluids, such as mucus, whereby the apparent viscosity of the fluid decreases with shear. Certain microscopic swimmers have been shown to progress more rapidly through shear-thinning fluids, but is this behavior generic to all microscopic swimmers, and what are the physics through which shear-thinning rheology affects a swimmer's propulsion? We examine swimmers employing prescribed stroke kinematics in two-dimensional, inertialess Carreau fluid: shear-thinning "Generalized Stokes" flow. Swimmers are modeled, using the method of femlets, by a set of immersed, regularized forces. The equations governing the fluid dynamics are then discretized over a body-fitted mesh and solved with the finite element method. We analyze the locomotion of three distinct classes of microswimmer: (1) conceptual swimmers comprising sliding spheres employing both one- and two-dimensional strokes, (2) slip-velocity envelope models of ciliates commonly referred to as "squirmers" and (3) monoflagellate pushers, such as sperm. We find that morphologically identical swimmers with different strokes may swim either faster or slower in shear-thinning fluids than in Newtonian fluids. We explain this kinematic sensitivity by considering differences in the viscosity of the fluid surrounding propulsive and payload elements of the swimmer, and using this insight suggest two reciprocal sliding sphere swimmers which violate Purcell's Scallop theorem in shear-thinning fluids. We also show that an increased flow decay rate arising from shear-thinning rheology is associated with a reduction in the swimming speed of slip-velocity squirmers. For sperm-like swimmers, a gradient of thick to thin fluid along the flagellum alters the force it exerts upon the fluid, flattening trajectories and increasing instantaneous swimming speed.Comment: 22 pages, 28 figure

Krowdix: simulador de redes sociales

Krowdix es un programa para el análisis de redes sociales. Estas redes se pueden crear y modificar de un modo sencillo, y están formadas por nodos (los usuarios de la red) y relaciones (conexiones entre esos nodos), pero además tienen otros elementos como aficiones (los intereses de los nodos), contenidos (cualquier cosa creada por un nodo en la red) y comentarios (de un nodo a un contenido). El programa es capaz de mostrar estas redes por pantalla de distintos modos, así como de generar informes que recojan sus propiedades. Pero además, gracias al uso de agentes inteligentes, Krowdix puede actuar como un simulador, mostrando la evolución de la red a partir de un instante dado. [ABSTRACT] Krowdix is a Social Network analyzer. Those networks can be created and modified easily, and they consist on nodes (network users) and relations (connections among nodes). They have other elements also, like likings (nodes interests), contents (anything created by a node) and comments (from nodes to contents). The program can show these networks on screen in different ways and generate reports with its properties. Furthermore, using intelligent agents, Krowdix can simulate the evolution of a network from a certain moment

Fine-scale genetic mapping of a hybrid sterility factor between Drosophila simulans and D. mauritiana: the varied and elusive functions of "speciation genes"

<p>Abstract</p> <p>Background</p> <p>Hybrid male sterility (HMS) is a usual outcome of hybridization between closely related animal species. It arises because interactions between alleles that are functional within one species may be disrupted in hybrids. The identification of genes leading to hybrid sterility is of great interest for understanding the evolutionary process of speciation. In the current work we used marked <it>P</it>-element insertions as dominant markers to efficiently locate one genetic factor causing a severe reduction in fertility in hybrid males of <it>Drosophila simulans </it>and <it>D. mauritiana</it>.</p> <p>Results</p> <p>Our mapping effort identified a region of 9 kb on chromosome 3, containing three complete and one partial coding sequences. Within this region, two annotated genes are suggested as candidates for the HMS factor, based on the comparative molecular characterization and public-source information. Gene <it>Taf1 </it>is partially contained in the region, but yet shows high polymorphism with four fixed non-synonymous substitutions between the two species. Its molecular functions involve sequence-specific DNA binding and transcription factor activity. Gene <it>agt </it>is a small, intronless gene, whose molecular function is annotated as methylated-DNA-protein-cysteine S-methyltransferase activity. High polymorphism and one fixed non-synonymous substitution suggest this is a fast evolving gene. The gene trees of both genes perfectly separate <it>D. simulans </it>and <it>D. mauritiana </it>into monophyletic groups. Analysis of gene expression using microarray revealed trends that were similar to those previously found in comparisons between whole-genome hybrids and parental species.</p> <p>Conclusions</p> <p>The identification following confirmation of the HMS candidate gene will add another case study leading to understanding the evolutionary process of hybrid incompatibility.</p