'Love, Peace, and Unity': Romantic Nationalism and the Role of Oral Literature in Kenya's Secondary Schools

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Hypersonic interference aerothermodynamics

When a vehicle travels at hypersonic speeds during launch, cruise or atmospheric re-entry it is subject to extremely high surface flow temperatures. As well as on the vehicle forebody, extreme heating can take place close to surface protuberances which are almost impossible to avoid in a real flight vehicle. These disturbances interfere with the freestream flow and result in complex viscous interactions which induce a local heat flux augmentation that can become detrimental to the integrity of the vehicle. A greater understanding of these flow phenomena is required. This thesis develops the understanding of the behaviour of the flow around surface protuberances in hypersonic vehicles and presents an engineering approach to predict the location and magnitude of the highest heat transfer rates in their vicinity. To this end, an experimental investigation was performed in a gun tunnel at freestream Mach numbers of 8.2 and 12.3 and Reynolds numbers ranging from Reoo/m=3.35xl0 ⁶ to Reꚙ /m=9.35xl0 ⁶. The effects of protuberance geometry, boundary layer state, freestream Reynolds number and freestream Mach number were assessed. Further understanding of the flowfield was obtained through oil-dot visualisations and highspeed schlieren videos taken at frame rates of up to 50 kHz. Results show the local interference interaction is strongly three-dimensional and is dominated by the incipient separation angle induced by the protuberance. In subcritical interactions - in which the incoming boundary layer remains unseparated upstream of the protuberance - the highest heating occurs adjacent to the device. In supercritical interactions - in which the incoming boundary layer is fully separated ahead of the protuberance - the highest heating generally occurs on the surface just upstream of it. An exception is for low-deflection protuberances under low-Reynolds freestream flow conditions in which case the heat flux to the side is greater

Proporcionalidad en el sistema electoral español

Con motivo de los resultados cosechados en las elecciones generales de 2019 son considerables los vituperios que se han alzado respecto al sistema electoral español. Hay muchos partidos que se ven damnificados por el actual sistema de reparto de escaños, porque no habiendo una gran diferencia en el número de votos obtenido con los otros partidos, la ley electoral favorece que el número de escaños no refleje los votos que han recibido. El objeto de este trabajo de fin de grado es reflexionar/investigar en torno al grado de proporcionalidad del sistema electoral, así como, el efecto que tiene este en la elección de los miembros de las cámaras y la formación del gobierno. Con este fin, las preguntas de investigación son las siguientes: ¿Hasta qué punto es proporcional nuestro sistema?; y ¿Cómo afecta la vigente ley electoral a la constitución del gobierno? En este contexto, la desigualdad entre los partidos mayoritarios y minoritarios hace que los electores voten estratégicamente y no por su opción preferida Las preguntas de investigación se responderán analizando sus elementos más relevantes para las elecciones cómo es el tamaño del congreso, las circunscripciones territoriales, la fórmula de reparto de escaños, la barrera electoral que afecta a las pequeñas formaciones políticas, más se examinara los rendimientos de este sistema y detallara los problemas de esta respecto a la proporcionalidad. Teniendo esto en cuenta, cabría afirmar la necesaria reforma en ciertos aspectos de nuestro sistema electoralDue to the results obtained in the 2019 general elections, which took place in Spain, there are considerable reproaches that have risen with respect to the Spanish electoral system. There are many parties that are affected by the current system for the distribution of seats, because not having a great difference in the number of votes obtained with the other parties, the electoral law makes the number of seats does not reflect the votes they have received. The purpose of this end-of-degree project is to determine the proportionality of the electoral system, as well as its effect on the election of members of the chambers and the formation of the government. To this end, the research questions are as follows: To what extent is our system proportional? And how does the current electoral law affect the government constitution? In this context, the inequality between the majority and minority parties causes voters to vote strategically not for their preferred option The research questions will be answered by analyzing its most relevant elements for the elections, such as the size of the congress, the territorial constituencies, the formula for the distribution of seats, the electoral barrier that affects the small political formations, and the performance of this will be examined. system and detail the problems in this respect to proportionality. Taking this into account, reform in certain aspects of our electoral system could be affirme

A Test Bench for Distortion-Energy Optimization of a DSP-Based H.264/SVC Decoder

International audienceThis paper describes an OMAP based real-time test bench to find the Pareto frontier of an H.264/SVC decoder within a distortion-energy optimization space. A metric to estimate video distortion is introduced. In addition, energy consumption estimates are obtained from real-time measurements of the computational load. Finally, test bench operation is successfully demonstrated with different H.264/SVC-compliant sets of sequences

A DSP based SVC IP STB using open SVC decoder

International audienceIn this paper, a implementation of a DSP-based IP set-top box (IP-STB) to decode CIF sequences compliant with the new Scalable Video Coding standard (14496-10 Amd 3) using Open SVC Decoder (OSD) is presented. The OSD software, designed for the PC environment, has been integrated into a previously developed IP-STB prototype. About 15 CIF frames per second can be decoded with the IP-STB

A DSP based H.264/SVC decoder for a multimedia terminal

International audienceIn this paper, the implementation of a DSP-based video decoder compliant with the H.264/SVC standard (14496-10 Annex G) is presented. A PC-based decoder implementation has been ported to a commercial DSP. Performance optimizations have been carried out improving the initial version performance about 40% and reaching real time for CIF sequences. Moreover, the performance has been characterized using H.264/SVC sequences with different kinds of scalabilities and different bitrates. This decoder will be the core of a multimedia terminal that will trade off energy against quality of experience

Correlación entre potencia y resistencia a la velocidad en jugadores juveniles de futbol de Boyacá

Spa: Esta investigación, tiene como objetivo establecer la correlación que existe entre la potencia y resistencia a la velocidad en los jugadores de fútbol de categoría sub- 17 del equipo profesional Patriotas Boyacá. Utilizando un enfoque empírico analítico y un diseño descriptivo correlacional no experimental, con una muestra de 18 jugadores con edad comprendida entre los 14.64 y los 17.53 años, un peso mínimo de 58 kilogramos y un máximo de 84 kilogramos, estatura mínima de 1.60 metros (160 centímetros) y una estatura máxima 1.85 metros (185 centímetros) y un IMC de 22.6198 ± 1.3347 kilogramos pertenecientes al equipo base de la categoría sub- 17, quienes firmaron el consentimiento informado. A quienes se les aplico el test de Bosco en los saltos Counter Mouvement Jump (CMJ), Repeat, Squat Jump (SJ), Ability Abalakov (ABK), y el test Sprint (RSA), con el fin de analizar las variables de estudio. Para el análisis estadístico realiza un análisis exploratorio de datos mediante estadística descriptiva; el procesamiento de la información se realizó mediante la hoja de cálculo Excel y el software estadístico SPSS 13 en su versión estudiantil, realizando el coeficiente de correlación de Pearson (r) datos paramétricos y un Alpha mayor o igual a 0.05. De los resultados obtenidos del test de Bosco, en (SJ) se encontró un promedio de 37.2111 centímetros (Cm). Con coeficiente de variación de 10.00 %, en ABK se presenta una media de 43.2722 Cm. Con coeficiente de variación de 11.93 % y para CMJ se obtuvo una media de 37.9778 Cm. Con coeficiente de variación de 9.65 %, el análisis descriptivo evidencia que el grupo de estudio se caracteriza por ser altamente semejante en cuanto a la potencia generada por el SJ, CMJ y ABK. En consecuencia, los jugadores de fútbol participantes en el estudio resultaron similares en cada una de las tres potencias; no obstante, se establece la existencia de un mayor promedio en la potencia ABK, seguida de la potencia CMJ y de la potencia SJ, esto indica que existe una relación fuerte y directa entre la potencia debida al SJ, CMJ y ABK; es decir, cada una de las potencias afecta de manera significativa sobre las otras dos Por otro lado, los resultados para el test RSA, indican que el índice de fatiga de los deportistas obtuvo un promedio de 7.1665 ± 4.5051%, con coeficiente de variación de 62.86 %, este porcentaje indica que, existe una correlación no significativa al 5% entre la potencia debida al SJ, CMJ, ABK y el IF En síntesis existe una relación leve entre la potencia y el IF como indicador de la resistencia a la velocidad; es decir, la potencia si influye sobre la resistencia a la velocidad pero no de manera significativa. . Por consiguiente, el grupo de estudio es muy heterogéneo en esta característica, es decir que los individuos no se parecen unos a otros en el índice de fatiga, en esta característica, lo cual refleja que no todos los deportistas están en excelentes valores de acuerdo con la clasificación general del test. En conclusión, se aceptó la hipótesis nula, considerando de esta manera que no hubo correlación entre la potencia y resistencia a la velocidad.Eng: This investigation, aims to stablish the correlation that exists between power and resistance to speed in soccer players sub-17 category in professional Boyacá’s patriots team. Using an empiric analytic approach and a correlational descriptive design no experimental, with a mark of 18 players between the ages of 14.64 and 17.53 years, with a minimum weight of 58 kilograms and a tops weight of 84 kilograms, and minimum height of 1.60 meters (160 centimeters) and a tops height of 1.85 meters (185 centimeters) and a IMC de 22.6198 ± 1.3347 kilograms which belongs to the base team in the category sub-17, who signed the informed consent. The Bosco test was applied in the Counter Movement jump (CMJ), Repeat, Squat Jump (SJ), Ability Abalakov (ABK), and the Sprint test (RSA), with the aim of analyzing the study variables. For the statistic analysis there is a data exploratory analysis through descriptive statistic; The information data gathering was made by using a calculus Excel sheet and a statistic software SPSS 13 in its student version, making the Pearson correlation coefficient (r) parametric data and an over Alpha or equal to 0.05. From the obtaining results of Bosco test, in (SJ) it was found an average of 37.2111 centimeters (Cm). With a variable coefficient of 10.00 %, in ABK It is a measure presented of 43.2722 Cm. With a variable coefficient of 11.93 % and for CMJ it was obtained a measure of 37.9778 Cm. with a variable coefficient of 9.65 %. On the other hand, the results of the test RSA, indicates that the fatigue index of the sport youngsters obtained an average of 7.1665 ± 4.5051%, with a variable coefficient of 62.86 %, this percentage indicates that soccer players result highly heterogeneous on terms of IF. Therefore, the study team is very heterogeneous on this characteristic, which reflects that not every sport man is in excellent values according to the general classification on the test. In conclusion, the null hypothesis was accepted, considering on this way that there was not any correlation between power and resistance to speed.Bibliografía y webgrafía: páginas 109-119.MaestríaMagister en Pedagogía de la Cultura Físic

A stratey for geometric error characterization in multi-axis machine tool by use of a laser tracker

This paper aims to present different methods of volumetric verification in long range machine toll with lineal and rotary axes using a commercial laser tracker as measurement system. This method allows characterizing machine tool geometric errors depending on the kinematic of the machine and the work space available during the measurement time. The kinematic of the machine toll is affected by their geometric errors, which are different depending on the number and type of movement axes. The relationship between the various geometrical errors is different from relationship obtained in machine tool whit only lineal axes. Therefore, the identification strategy should be different. In the same way, the kinematic chain of the machine tool determines determines the position of the laser tracker and available space for data capture. This paper presents the kinematic model of several machine tools with different kinematic chains use to improve the machine tool accuracy of each one by volumetric verification. Likewise, the paper thus presents a study of: the adequacy of different nonlinear optimization strategies depending on the type of axis and the usable space available

Pol II–Expressed shRNA Knocks Down Sod2 Gene Expression and Causes Phenotypes of the Gene Knockout in Mice

RNA interference (RNAi) has been used increasingly for reverse genetics in invertebrates and mammalian cells, and has the potential to become an alternative to gene knockout technology in mammals. Thus far, only RNA polymerase III (Pol III)–expressed short hairpin RNA (shRNA) has been used to make shRNA-expressing transgenic mice. However, widespread knockdown and induction of phenotypes of gene knockout in postnatal mice have not been demonstrated. Previous studies have shown that Pol II synthesizes micro RNAs (miRNAs)—the endogenous shRNAs that carry out gene silencing function. To achieve efficient gene knockdown in mammals and to generate phenotypes of gene knockout, we designed a construct in which a Pol II (ubiquitin C) promoter drove the expression of an shRNA with a structure that mimics human miRNA miR-30a. Two transgenic lines showed widespread and sustained shRNA expression, and efficient knockdown of the target gene Sod2. These mice were viable but with phenotypes of SOD2 deficiency. Bigenic heterozygous mice generated by crossing these two lines showed nearly undetectable target gene expression and phenotypes consistent with the target gene knockout, including slow growth, fatty liver, dilated cardiomyopathy, and premature death. This approach opens the door of RNAi to a wide array of well-established Pol II transgenic strategies and offers a technically simpler, cheaper, and quicker alternative to gene knockout by homologous recombination for reverse genetics in mice and other mammalian species