Дисертації: "8130m"

1

Sardo, Giacomo. "Caratteristiche morfologiche della retina nei Cetacei." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8130/.

Повний текст джерела

Анотація:

Le caratteristiche strutturali dell’occhio dei Cetacei sono state in passato oggetto di studio. Tuttavia, i dati relativi alla stratigrafia della retina ed alle caratteristiche morfologiche dei neuroni gangliari in essa presenti sono piuttosto ridotti; per questo motivo, l’obiettivo della presente ricerca è stato quello di studiare, mediante metodiche di immunoistochimica, l’uso della microscopia ottica e di opportuni software di analisi immagine, le caratteristiche morfologiche della retina e delle cellule gangliari in essa presenti in differenti specie di Cetacei. Per la presente ricerca sono stati utilizzate come specie di riferimento i seguenti Delfinidi: tursiope (Tursiops truncatus) e stenella striata (Stenella coeruleoalba). Le analisi sulle sezioni interessano l’area, la densità dei neuroni gangliari, la stratigrafia della retina e l’analisi morfometrica degli strati e dei neuroni. I risultati ottenuti indicano come la retina del tursiope e della stenella striata, nonostante un'organizzazione di base assai simile a quella degli altri Mammiferi, mostri caratteristiche qualitative sue proprie. Gli strati retinici sono quelli che si osservano in tutti i Mammiferi e lo spessore totale della retina è, nel tursiope (101,23 µm ) e nella stenella striata (108.35 µm ), pressochè simile ai Mammiferi terrestri (110-220 µm). Nell'ambito della retina, lo strato che presento lo spesso medio maggiore è quello dei granuli interni (SNE); tale dato non coincide con quanto osservato in altri Mammiferi. I neuroni gangliari presenti nella retina di tursiope e stenella striata mostrano, analogamente a quanto osservato in altri Cetacei, una bassa densità cellulare. Nel tursiope e nella stenella striata le aree a maggiore densità cellulare presentano neuroni multipolari di dimensioni minori rispetto a quelle con bassa densità. Questo dato potrebbe indicare una "cellularità" (quantità di superficie occupata da cellule) costante nei differenti distretti retinici. I neuroni gangliari presenti nella retina di tursiope e stenella striata sono disposti in un unico strato, come osservato in numerosi altri Cetacei, ma differisce da quanto osservato nel capodoglio (Physeter macrocephalus) dove tali cellule si dispongono in strati multipli. Neuroni gangliari di grandi dimensioni sono stati osservati sia nel tursiope che nella stenella striata. Tale dato coincide con quanto osservato in altri Odontoceti ed in alcuni Misticeti. Allo stato attuale non è ancora stato dato un chiaro significato funzionale alle cellule gangliari giganti. Un possibile ruolo potrebbe essere quello di condurre, in animali di grossa mole, l'impulso nervoso molto velocemente, grazie alla presenza di un assone provvisto di un diametro notevole. Tale interpretazione non è da tutti accettata in quanto Mammiferi terrestri di grandi dimensioni non presentano nella loro retina neuroni gangliari giganti.

Стилі APA, Harvard, Vancouver, ISO та ін.

2

Garro, Sebastián Gabriel, and Ana María de los Ángeles López. "Perfil social de los pacientes internados en la unidad coronaria crítica del Hospital Español de Mendoza." Bachelor's thesis, Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería, 2003. http://bdigital.uncu.edu.ar/8130.

Повний текст джерела

Анотація:

El objetivo principal de este estudio es describir y comparar las realidades del perfil social de los pacientes internados en Unidad Coronaria del Hospital Español, Mendoza y un estudio desarrollado por un grupo multidisciplinario de la Fundación René Favaloro (1998-1999). Se realizó durante el periodo entre enero de 1999 y enero de 2000. Es un estudio de tipo descriptivo, transversal y retrospectivo. Como método de recolección de datos se recurrió a la observación de historias clínicas con datos como son hipertensión arterial, antecedentes familiares y patológicos, infarto agudo de miocardio, controles, ocupación laboral, actividad física, cobertura social, entre otros. De un total de 300 historias clínicas de pacientes internados es este servicio durante 1999 y 2000 se trabajó con una muestra de 60 de ellas.
Fil: Garro, Sebastián Gabriel. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería..
Fil: López, Ana María de los Ángeles. Universidad Nacional de Cuyo. Facultad de Ciencias Médicas. Escuela de Enfermería..

Стилі APA, Harvard, Vancouver, ISO та ін.

3

Terron, Canedo Nuria. "miRNAs in equine sarcoids : identification and profiling of miRNAs in equine fibroblasts and BPV-1 transformed equine fibroblasts." Thesis, University of Glasgow, 2017. http://theses.gla.ac.uk/8130/.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

4

Martínez, de Tejada Pérez Carlos. "858: la crisis de la solvencia: un modelo económico-financiero para un entorno en transición." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/81305.

Повний текст джерела

Анотація:

Esta investigación nace del análisis de la economía española, fuertemente anclada en el sector construcción y se centra en la investigación de alternativas para afrontar un cambio de modelo. En efecto, la Sociedad española debe afrontar un duro ajuste de su economía y una compleja situación del mercado de la vivienda y, en general, del de la construcción. El modelo de la actividad constructora basado en el crecimiento de actividad por el incremento sostenido de los precios de la vivienda parece haber llegado a su fin. El análisis del entorno macroeconómico indica una importante caída de la Demanda Agregada, que arrastra la Inversión, la Renta Disponible y el Consumo, con un brusco descenso de la recaudación tributaria y del Gasto Público. Como consecuencia, se ralentiza peligrosamente la actividad edificatoria e inmobiliaria, se expulsa del mercado laboral a una masa ingente de asalariados y continúa sin resolverse el problema de la escasez de vivienda para distintos colectivos. Debemos, pues, plantearnos cuál será el nuevo marco de la actividad empresarial en el futuro y, sobre todo, cuál es el modelo que nos permitirá afrontar la transición hacia un nuevo modelo de Economía Sostenible. En este trabajo se investiga si la actividad constructora puede ser uno de los pilares de la economía en transición: nuestro modelo tradicional de crecimiento y nuestro modelo educativo actual no nos permiten muchos más alardes tecnológicos. Así pues, planteamos como hipótesis de este trabajo, el desarrollo de un nuevo modelo en transición, apoyado en la actividad promotora cimentada sobre un fuerte componente de Servicio e Innovación, con la siguiente ecuación: Aprom = C + i + S3. Teniendo en cuenta que actualmente el mercado no es capaz de suministrar vivienda a determinados colectivos, éste es un servicio que debe afrontar diligentemente la propia Administración. En este marco, abordamos una nueva estrategia, cubriendo la necesidad de la Administración de proveer el servicio de vivienda social y la necesidad empresarial de las pequeñas y medianas promotoras/constructoras. Proponemos desarrollar proyectos de cooperación público-privada para la prestación del servicio de vivienda pública social. La legislación así lo permite aunque, hasta ahora, la complejidad de la fórmula financiera y el continuo crecimiento del mercado inmobiliario no habían empujado a la sociedad a desarrollar alternativas. Se basa éste en un modelo de política económica y social orientado a facilitar la constitución de concesiones administrativas para la construcción, mantenimiento y explotación de un Servicio de Vivienda Pública Social (vivienda social en alquiler, vivienda asistida, …), donde los Ayuntamientos participan con suelo de titularidad pública y los concesionarios asumen los riesgos financieros, de construcción y de la prestación de servicios, con unos precios para el usuario sensiblemente inferiores a los de mercado y una completa cartera de servicios. Finalmente, a partir de los fondos disponibles para los Planes de Vivienda, hemos inferido su impacto en la generación de vivienda social y en la creación de empleo. De igual forma, hemos considerado el previsible impacto en la reducción del precio de la vivienda y de los costes de producción, a causa del “Efecto de un Mercado Mayor” y su impacto en el volumen global de la Economía española gracias al “Efecto Multiplicador de la Demanda”. Parece pues, acertado, concluir en la necesidad de contar con un nuevo modelo de gestión que podría estar basado en una nueva visión de la construcción, con una fuerte componente de innovación y servicio.
This research comes from the analysis of the Spanish economy, deeply rooted in the construction industry. The investigation is focused on the different alternatives to face a change of economic model. The Spanish Society must face a hard adjustment of its economy within a complex situation which impacts on the internal market and, as a consequence, on the civil construction sector. The construction activity model based on the continuous growth of activity based on the sustained house prices increase seems to be ended. Macroeconomic analysis shows a significant drop in aggregate demand, which drags on Investment, disposable income and consumption, with a sharp decline in tax revenues and public expenditure. As a result, building and real estate activity slows dangerously, a huge mass of employees is moved out from the labor market, while the problem of lack of housing for different social groups remains unsolved. We must therefore ask about the new rules for business activity in the future and what of those activities would allow the transition to a new Sustainable Economy model. This work tries to investigate if the construction activity could be one of the pillars of the economy in transition, since our traditional economic growth model and our current educational model don’t allow us much more technological activities. Thus, the development of a new model in transition, supported over the promoting activity founded on a strong component of service and innovation it is hereby proposed as hypothesis. This model has the following equation: Aprom = C + i + S3. Given that the market is not currently providing housing for certain social groups, this service should be diligently provided by the Administration. In this situation, we propose a new strategy in order to cover the needs of the Administration to provide a social housing service and also to help the business needs of small and medium-sized promoters / constructors. Therefore, I propose to develop projects for public-private partnership to provide a public social housing service. Even although the law currently allows this kind of projects, the complexity of the financial formula and the continuous growth of the real estate market didn’t push the Society to develop any alternative in such a direction. This is a model of social and economic policy addressed to make possible the constitution of administrative concessions for the construction, maintenance and operation of a Public Social Housing Service (low cost rental housing, assisted living facilities, ...), where the City Councils would participate by providing public land and private companies would assume the financial risks of construction and the provision of services. In such a way, the final users might obtain prices substantially lower than at the current market as well as a comprehensive services portfolio. Finally, considering the available funds for housing public projects, we have inferred its eventual impact on the generation of social housing and on the employment. We consider too the expected impact on housing prices and production costs reduction, as a consequence of the “effect of a larger market” and its impact on the overall volume of the Spanish economy by the “multiplier effect of the demand". As a conclusion, a new model appears to be needed; a new model based on a renovated vision of the construction business that cannot be understood without innovation and services as key factors to succeed.

Стилі APA, Harvard, Vancouver, ISO та ін.

5

Brandano, Davide. "Design of Frequency divider with voltage vontrolled oscillator for 60 GHz low power phase-locked loops in 65 nm RF CMOS." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/81303.

Повний текст джерела

Анотація:

Increasing memory capacity in mobile devices, is driving the need of high-data rates equipment. The 7 GHz band around 60 GHz provides the opportunity for multi-gigabit/sec wireless communication. It is a real opportunity for developing next generation of High-Definition (HD) devices. In the last two decades there was a great proliferation of Voltage Controlled Oscillator (VCO) and Frequency Divider (FD) topologies in RF ICs on silicon, but reaching high performance VCOs and FDs operating at 60 GHz is in today's technology a great challenge. A key reason is the inaccuracy of CMOS active and passive device models at mm-W. Three critical issues still constitute research objectives at 60 GHz in CMOS: generation of the Local Oscillator (LO) signal (1), division of the LO signal for the Phase-Locked Loop (PLL) closed loop (2) and distribution of the LO signal (3). In this Thesis, all those three critical issues are addressed and experimentally faced-up: a divide-by-2 FD for a PLL of a direct-conversion transceiver operating at mm-W frequencies in 65 nm RF CMOS technology has been designed. Critical issues such as Process, Voltage and Temperature (PVT) variations, Electromagnetic (EM) simulations and power consumption are addressed to select and design a FD with high frequency dividing range. A 60 GHz VCO is co-designed and integrated in the same die, in order to provide the FD with mm-W input signal. VCOs and FDs play critical roles in the PLL. Both of them constitute the PLL core components and they would need co-design, having a big impact in the overall performance especially because they work at the highest frequency in the PLL. Injection Locking FD (ILFD) has been chosen as the optimum FD topology to be inserted in the control loop of mm-W PLL for direct-conversion transceiver, due to the high speed requirements and the power consumption constraint. The drawback of such topology is the limited bandwidth, resulting in narrow Locking Range (LR) for WirelessHDTM applications considering the impact of PVT variations. A simulation methodology is presented in order to analyze the ILFD locking state, proposing a first divide-by-2 ILFD design with continuous tuning. In order to design a wide LR, low power consumption ILFD, the impacts of various alternatives of low/high Q tank and injection scheme are deeply analysed, since the ILFD locking range depends on the Q of the tank and injection efficiency. The proposed 3-bit dual-mixing 60 GHz divide-by-2 LC-ILFD is designed with an accumulation of switching varactors binary scaled to compensate PVT variations. It is integrated in the same die with a 4-bit 60 GHz LC-VCO. The overall circuit is designed to allow measurements of the singles blocks stand-alone and working together. The co-layout is carried on with the EM modelling process of passives devices, parasitics and transmission lines extracted from the layout. The inductors models provided by the foundry are qualified up to 40 GHz, therefore the EM analysis is a must for post-layout simulation. The PVT variations have been simulated before manufacturing and, based on the results achieved, a PLL scheme PVT robust, considering frequency calibration, has been patented. The test chip has been measured in the CEA-Leti (Grenoble) during a stay of one week. The operation principle and the optimization trade-offs among power consumption, and locking ranges of the final selected ILFD topology have been demonstrated. Even if the experimental results are not completely in agreement with the simulations, due to modelling error and inaccuracy, the proposed technique has been validated with post-measurement simulations. As demonstrated, the locking range of a low-power, discrete tuned divide-by-2 ILFD can be enhanced by increasing the injection efficiency, without the drawbacks of higher power consumption and chip area. A 4-bits wide tuning range LC-VCO for mm-W applications has been co-designed using the selected 65 nm CMOS process.

Стилі APA, Harvard, Vancouver, ISO та ін.

6

Shaat, Musbah M. R. "Resource Management in Multicarrier Based Cognitive Radio Systems." Doctoral thesis, Universitat Politècnica de Catalunya, 2012. http://hdl.handle.net/10803/81300.

Повний текст джерела

Анотація:

The ever-increasing growth of the wireless application and services affirms the importance of the effective usage of the limited radio spectrum. Existing spectrum management policies have led to significant spectrum under-utilization. Recent measurements showed that large range of the spectrum is sparsely used in both temporal and spatial manner. This conflict between the inefficient usage of the spectrum and the continuous evolution in the wireless communication calls upon the development of more flexible management policies. Cognitive radio (CR) with the dynamic spectrum access (DSA) is considered to be a key technology in making the best solution of this conflict by allowing a group of secondary users (SUs) to share the radio spectrum originally allocated to the primary user (PUs). The operation of CR should not negatively alter the performance of the PUs. Therefore, the interference control along with the highly dynamic nature of PUs activities open up new resource allocation problems in CR systems. The resource allocation algorithms should ensure an effective share of the temporarily available frequency bands and deliver the solutions in timely fashion to cope with quick changes in the network. In this dissertation, the resource management problem in multicarrier based CR systems is considered. The dissertation focuses on three main issues: 1) design of efficient resource allocation algorithms to allocate subcarriers and powers between SUs such that no harmful interference is introduced to PUs, 2) compare the spectral efficiency of using different multicarrier schemes in the CR physical layer, specifically, orthogonal frequency division multiplexing (OFDM) and filter bank multicarrier (FBMC) schemes, 3) investigate the impact of the different constraints values on the overall performance of the CR system. Three different scenarios are considered in this dissertation, namely downlink transmission, uplink transmission, and relayed transmission. For every scenario, the optimal solution is examined and efficient sub-optimal algorithms are proposed to reduce the computational burden of obtaining the optimal solution. The suboptimal algorithms are developed by separate the subcarrier and power allocation into two steps in downlink and uplink scenarios. In the relayed scenario, dual decomposition technique is used to obtain an asymptotically optimal solution, and a joint heuristic algorithm is proposed to find the suboptimal solution. Numerical simulations show that the proposed suboptimal algorithms achieve a near optimal performance and perform better than the existing algorithms designed for cognitive and non-cognitive systems. Eventually, the ability of FBMC to overcome the OFDM drawbacks and achieve more spectral efficiency is verified which recommends the consideration of FBMC in the future CR systems.
El crecimiento continuo de las aplicaciones y servicios en sistemas inal´ambricos, indica la importancia y necesidad de una utilizaci´on eficaz del espectro radio. Las pol´ıticas actuales de gesti´on del espectro han conducido a una infrautilizaci´on del propio espectro radioel´ectrico. Recientes mediciones en diferentes entornos han mostrado que gran parte del espectro queda poco utilizado en sus ambas vertientes, la temporal, y la espacial. El permanente conflicto entre el uso ineficiente del espectro y la evoluci´on continua de los sistemas de comunicaci´on inal´ambrica, hace que sea urgente y necesario el desarrollo de esquemas de gesti´on del espectro m´as flexibles. Se considera el acceso din´amico (DSA) al espectro en los sistemas cognitivos como una tecnolog´ıa clave para resolver este conflicto al permitir que un grupo de usuarios secundarios (SUs) puedan compartir y acceder al espectro asignado inicialmente a uno o varios usuarios primarios (PUs). Las operaciones de comunicaci´on llevadas a cabo por los sistemas radio cognitivos no deben en ning´un caso alterar (interferir) los sistemas primarios. Por tanto, el control de la interferencia junto al gran dinamismo de los sistemas primarios implica nuevos retos en el control y asignaci´on de los recursos radio en los sistemas de comunicaci´on CR. Los algoritmos de gesti´on y asignaci´on de recursos (Radio Resource Management-RRM) deben garantizar una participaci´on efectiva de las bandas con frecuencias disponibles temporalmente, y ofrecer en cada momento oportunas soluciones para hacer frente a los distintos cambios r´apidos que influyen en la misma red. En esta tesis doctoral, se analiza el problema de la gesti´on de los recursos radio en sistemas multiportadoras CR, proponiendo varias soluciones para su uso eficaz y coexistencia con los PUs. La tesis en s´ı, se centra en tres l´ıneas principales: 1) el dise˜no de algoritmos eficientes de gesti´on de recursos para la asignaci´on de sub-portadoras y distribuci´on de la potencia en sistemas segundarios, evitando asi cualquier interferencia que pueda ser perjudicial para el funcionamiento normal de los usuarios de la red primaria, 2) analizar y comparar la eficiencia espectral alcanzada a la hora de utilizar diferentes esquema de transmisi´on multiportadora en la capa f´ısica del sistema CR, espec´ıficamente en sistemas basados en OFDM y los basados en banco de filtros multiportadoras (Filter bank Multicarrier-FBMC), 3) investigar el impacto de las diferentes limitaciones en el rendimiento total del sistema de CR. Los escenarios considerados en esta tesis son tres, es decir; modo de transmisi´on descendente (downlink), modo de transmisi´on ascendente (uplink), y el modo de transmisi´on ”Relay”. En cada escenario, la soluci´on ´optima es examinada y comparada con algoritmos sub- ´optimos que tienen como objetivo principal reducir la carga computacional. Los algoritmos sub-´optimos son llevados a cabo en dos fases mediante la separaci´on del propio proceso de distribuci´on de subportadoras y la asignaci´on de la potencia en los modos de comunicaci´on descendente (downlink), y ascendente (uplink). Para los entornos de tipo ”Relay”, se ha utilizado la t´ecnica de doble descomposici´on (dual decomposition) para obtener una soluci´on asint´oticamente ´optima. Adem´as, se ha desarrollado un algoritmo heur´ıstico para poder obtener la soluci´on ´optima con un reducido coste computacional. Los resultados obtenidos mediante simulaciones num´ericas muestran que los algoritmos sub-´optimos desarrollados logran acercarse a la soluci´on ´optima en cada uno de los entornos analizados, logrando as´ı un mayor rendimiento que los ya existentes y utilizados tanto en entornos cognitivos como no-cognitivos. Se puede comprobar en varios resultados obtenidos en la tesis la superioridad del esquema multiportadora FBMC sobre los sistemas basados en OFDM para los entornos cognitivos, causando una menor interferencia que el OFDM en los sistemas primarios, y logrando una mayor eficiencia espectral. Finalmente, en base a lo analizado en esta tesis, podemos recomendar al esquema multiportadora FBMC como una id´onea y potente forma de comunicaci´on para las futuras redes cognitivas.

Стилі APA, Harvard, Vancouver, ISO та ін.

7

Barón, Rodríguez María Mercedes. "La función del plancton y los tapetes microbianos en el Parque Nacional Las Tablas de Daimiel." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81301.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

8

Lucas, Ramón Irene de. "La pionera oculta: Alice Guy en el origen del cine." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81302.

Повний текст джерела

Анотація:

Alice Guy es una pionera de la cinematografía en los orígenes del cine, sin embargo, ha sido sistemáticamente excluida de tal consideración en la Historia del cine. A pesar de que su obra muestra méritos y aportaciones suficientes para ser reconocida como tal, el tratamiento que ha recibido en la historiografía general hasta la actualidad no lo refleja así. Asistimos pues a una infravaloración de la importancia, de la trascendencia de la figura de Alice Guy y su obra respecto al del resto de pioneros coetáneos, algunos discípulos de la propia Guy Rescatada del olvido por los textos feministas, sólo la bibliografía específica la ha valorado y situado en el lugar que le corresponde: junto al resto de pioneros de esa época, y no por debajo. El tema principal este trabajo es reestablecer el lugar y la importancia de las aportaciones de Alice Guy a la Historia del cine, justificando y defendiendo su legitimidad como pionera de la cinematografía, e intentando dar respuesta al por qué de su exclusión, de esta ausencia que se perpetua en el presente. Los objetivos del trabajo se dividen en tres apartados: el primero se ocupa de evidenciar que el tratamiento de Alice Guy en la historiografía del cine ha sido incompleto, insuficiente y contradictorio en términos del conjunto bibliográfico de los manuales de historia general del cine de los orígenes. A pesar de que Guy es una pionera de la cinematografía a muchos niveles de consideración, estos discursos parecen otorgarle un lugar de segunda línea, donde su figura no es pionera por contribuir activamente a la cinematografía sino por datos casi circunstanciales. Esta primera parte consiste en un análisis pormenorizado del tratamiento que recibe Guy en una veintena de libros de historia general o francesa –clásica y actual- evidenciando así la contradicción de los discursos, la insuficiencia del tratamiento de éstos y la falta de unificación de criterios entre los discursos en cuanto se refiere a la figura de Alice Guy. Identificando los aspectos sobre los que se operará la exclusión de ésta de su consideración de pionera de la cinematografía de los orígenes al mismo nivel que el resto de pioneros. Los discursos infravalorativos de los tratamientos analizados en la primera parte ignoran el análisis de su obra a la hora de establecer su importancia, reconociendo todo aquello que no le podían negar pero raramente incidiendo en sus contribuciones cinematográficas. Por ello, la segunda parte de este trabajo se ciñe al análisis de su filmografía, de forma que las conclusiones acerca de sus aportaciones siempre tendrán un correlato en su obra, que es precisamente la que le otorga el título y lugar de pionera de forma indiscutible y a su vez, constituirá la base para constatar y evidenciar la perpetuación de su minusvaloración en la historiografía general del cine. Así, la segunda parte consistirá en un análisis cinematográfico de su obra y de sus aportaciones cinematográficas a partir del análisis exhaustivo de la misma –los análisis fílmicos de sus películas se incluyen en los Anexos del Tomo II-. La última parte se centrará en analizar el por qué de la exclusión, considerando no sólo discursos y teorías de estudio de género sino también el peso de los discursos comunicativos dominantes, las nociones de ‘contaminación’ discursiva, o el principio subversivo inherente a la obra de Guy, entendido como una amenaza que a su vez se traduciría en una minusvaloración dentro del discurso dominante de la historiografía cinematográfica. En esta última parte se intentará ponderar el peso específico de cada uno de estos factores en la construcción de su ausencia histórica como pionera de la cinematografía.
Alice Guy is an early cinema pioneer, however, she has been systematically excluded of such recognition in the History of cinematography. Even though her work shows enough contributions to be identified as such, her treatment in general historiography up to present day does not reflect this extreme, in fact, there has been a clear underestimation of the transcendence of Alice Guy’s figure and her work with regard to her contemporary cinema pioneers, many of which were Guy’s disciples. Rescued from oblivion by feminists, only specific bibliography has valued and recognised her in her rightful place: at the same level as the rest of early cinema pioneers, rather than below. The main theme of this research is to establish the rightful place and relevance of Guy’s contributions to the History of cinematography, justifying her legitimacy as an early cinema pioneer, and trying find the underlying motives of her exclusion, of this absence that perpetuates in present day. This work is structured in three sections as follows. The first one illustrates how Guy’s treatment in cinematographic historiography is incomplete, insufficient and contradictory in the corpus of bibliography on early cinematography. It thus includes a detailed analysis of Guy’s treatment in twenty books of general and French history–both classic and modern- in order to identify the means and arguments by which Guy is excluded from the consideration of cinema pioneer, while recognised instead that of woman pioneer. The second section is dedicated to identify her cinematographic contributions by operating an exhaustive film analysis of all of her films –the actual film analysis are included in Volume II’s Annexes). The last section reflects on the motives and nature of her exclusion considering several different approaches –genre studies, dominant discourses; discursive ‘contamination’; the subversive principle inherent to Guy’s work, understood as a menace resulting in the underestimation of her work…- aiming to ponder the specific weight of each of thesefactors in Guy’s historical absence as an early cinema pioneer.

Стилі APA, Harvard, Vancouver, ISO та ін.

9

Sarrión, Pérez María Gracia. "Estudio clínico del carcinoma oral de células escamosas y su relación conla expresión de los linfocitos T reguladores infiltrantes en el tejido tumoral." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81304.

Повний текст джерела

Анотація:

El Carcinoma Oral de Células Escamosas (COCE) es el más frecuente de los carcinomas orales representando aproximadamente el 3-4% de las neoplasias malignas. Clásicamente se ha asociado a hombres de 60 años consumidores de tabaco y alcohol, pero actualmente se ha observado un incremento en la incidencia en pacientes menores de 40 años y en mujeres en los que estos factores de riesgos no están presentes. Suele aparecer en forma de tumoración o úlcera, acompañadas a menudo de adenopatías cervicales, sobre todo en estadios avanzados. El pronóstico del COCE depende de factores relacionados con el tumor, el tratamiento y el paciente. La inmunidad antitumoral juega un papel importante en la protección contra el cáncer. Las células T reguladoras (Treg) son un subconjunto de linfocitos especializados, caracterizados por la inducción de la tolerancia periférica. Mantienen la tolerancia inmune en el tumor, por lo que suprimen la función inmunitaria en los cánceres. Debido a que varias familias de factores de transcripción, citoquinas, moléculas estimuladoras y de superficie de las células T son imprescindibles para el crecimiento y la expansión de las células Treg, podría ser útil analizar en el COCE dichas moléculas para la elucidación de biomarcadores pronósticos. Los objetivos de la tesis fueron: analizar y describir los datos generales y las características clínico-patológicas y radiológicas de un grupo de 100 pacientes con COCE, determinar en un grupo de 36 muestras tumorales los niveles de expresión relativa de marcadores moleculares asociados a los linfocitos Treg (CTLA-4, FoxP3, IL-10, TGFβ1, CD4, CD8, CXCR4 , CD127, CD25) comparándolo con muestras procedentes de tejido sano, analizar la posible correlación de la supervivencia global de los pacientes con los parámetros clínico-patológicos y valorar la posible aplicabilidad de los marcadores moleculares asociados a los linfocitos Treg como biomarcadores pronósticos en el COCE. Se estudiaron retrospectivamente 100 pacientes con COCE analizando los datos generales de los pacientes y las características clínico-patológicas y radiológicas de las lesiones. La muestra estaba compuesta por un total de 60 hombres y 40 mujeres con una edad media de 63,30 años. Además en 36 pacientes se determinaron los niveles de expresión relativa de los marcadores asociados a los linfocitos Treg en el tejido neoplásico comparándolo con muestras procedentes de 8 pacientes sanos. Se realizó una estadística descriptiva, se registró el tiempo de supervivencia global para cada paciente y se analizó la supervivencia para los diferentes factores estudiados. Tras el estudio realizado llegamos a las siguientes conclusiones: la lesión más frecuentemente observada en el COCE fue la ulceración acompañada de dolor o molestias. La localización más prevalente fue el suelo de boca, superficie ventral de lengua y bordes laterales, siendo el COCE bien diferenciado el tipo histológico más común. La mitad de los casos fueron diagnosticados en estadios avanzados, correspondiendo el estadio IVA el más frecuente en el momento del diagnóstico, seguido del estadio I. Los genes TGF-β1 y FoxP3 presentaron mayores niveles de expresión en los tejidos con COCE que en los tejidos sanos. El tiempo de supervivencia estuvo influenciado por la localización de la lesión, la presencia de adenopatías, el tamaño de la lesión y, consecuentemente por el estadio. La presencia de adenopatías disminuye la supervivencia en aproximadamente un 66%. La expresión de los marcadores tumorales asociados a los linfocitos Treg no influyó en el tiempo de supervivencia de los pacientes con COCE, por lo que serían necesarios más estudios para valorar su posible aplicabilidad como marcadores pronósticos.
Oral squamous cell carcinoma (OSCC) is the most common head and neck cancer, accounting for greater than 90% of total cases. The main carcinogenic agents associated are tobacco and alcohol. It is more common in men and most patients are over 45 years old. Oral squamous cell carcinoma in its initial stages shows an erytholeukoplastic area without symptoms but in advanced stages there are ulcers and lumps. Factors with a prognostic value are related to tumour, treatment and patient. Tumour-infiltrating lymphocytes contribute to local tumour suppression as well as to tumour escape from the immune system. Immunological tumour control is mediated by different subsets of regulatory T cells (Treg) with distinct immunophenotype. Our main objectives were to analyze and describe clinicopathological and radiological characteristics of a group of 100 patients with OSSC, to determine in a group of 36 tumour samples the expression levels of Treg markers (CTLA-4, FoxP3, IL-10, TGFß1, CD4, CD8, CXCR4, CD127, CD25) comparing them with samples proceeding from healthy control group, to analyze the possible correlation of the global survival of the patients with the clinicopathological parameters and to value the possible applicability of the molecular Treg markers in OSCC prognosis. The study included a total of 100 patients with a histologically confirmed diagnosis of OSCC. The mean patient age at the time of the diagnosis was 63.30 years. There were 60 males and 40 females. Descriptive statistic was performed, the period of global survival for each patient was registered, and survival time was analyzed for the different factors studied. The most common lesion was ulceration. The most frequent tumour sites were tongue and floor of the mouth. Well differentiated squamous cell carcinoma was more prevalent. Half of our patients were diagnosed at advanced stages. Our results showed that tumour samples had significant higher expression of TGFβ1 and FoxP3 genes than normal tissue. We found a relationship between survival and location of the lesion, tumour size, cervical lymph node metastases, and stage. Neck metastasis showed a diminished survival rate in approximately 66%. However we found no correlation between survival and the levels of expression of studied genes.

Стилі APA, Harvard, Vancouver, ISO та ін.

10

Ortiz, Sánchez Luis. "¿Legitimidad de la guerra? Una revisión a la teoría de la guerra justa." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81306.

Повний текст джерела

Анотація:

El problema de la legitimidad de la guerra es uno de los problemas fundamentales de la filosofía política y es de especial relevancia desde el punto de vista moral y jurídico. La teoría de la guerra justa ha cumplido un papel ambivalente en el debate sobre la legitimidad de la guerra. Frente a la corriente realista, que está representada por autores como Tucídides, Hobbes y Maquiavelo, ha cumplido una labor limitadora de la guerra. Al mismo tiempo, frente a la corriente pacifista, que parte de rechazar la guerra en sí misma, ha cumplido una labor justificador de la guerra. El objetivo de esta investigación es realizar una revisión crítica a la teoría de la guerra justa. El trabajo se compone de cinco capítulos en los que se analiza de forma sistemática la teoría de la guerra justa, poniéndola en relación con los problemas actuales. En primer lugar se analiza la naturaleza y fundamentación de la teoría de la guerra justa, prestando especial atención al posicionamiento de la misma como una teoría intermedia entre el realismo y el pacifismo. Durante este capítulo de pone de relieve la necesidad de revisar la fundamentación de la teoría. Se desarrolla en profundidad la denominada “analogía doméstica”, que permite extender las consideraciones de la legítima defensa a nivel individual a la defensa de las comunidades políticas. El segundo capítulo está dedicado al desarrollo y evolución de la teoría de la guerra justa. El análisis parte de las primeras referencias a la necesidad de limitar la guerra en los autores clásicos griegos. Posteriormente se examina el desarrollo formal de la teoría de la guerra justa, que tiene su origen en la obra de Agustín de Hipona, y se consolida en los postulados de Tomás de Aquino y Francisco de Vitoria. La investigación se extiende hasta recientes formulaciones como la de Michael Walzer. El análisis histórico permite mostrar que la teoría de la guerra justa no es una teoría unitaria, sino un conjunto de teorías relacionadas. Este conjunto de teorías comparten un origen común, ya que están ligadas al pensamiento cristiano, pero la doctrina no es unánime en la delimitación sustantiva del IUS AD BELLUM y del IUS IN BELLO Los capítulos tercero, cuarto y quinto están dedicados a analizar sistemáticamente el contenido de la teoría de la guerra justa poniéndolo en relación con problemas actuales. A lo largo de estos capítulos se destaca la dificultad de aplicar una tradición doctrinal que surgió y se desarrollo en contextos muy diferentes del actual. Se destaca su utilidad en estos momentos y también sus insuficiencias, es decir, la ambivalencia de la tradición de la guerra justa. En especial, se profundiza en: los riesgos que conlleva la adopción de un concepto laxo de prevención, tal y como propone la Doctrina Bush; la intervención humanitaria, la teoría medieval del doble efecto y la legitimidad de los daños colaterales; la figura de la emergencia suprema; y en la necesidad del denominado IUS POST BELLUM. La teoría de la guerra justa no ha podido dar respuesta clara a los desafíos que representan las “nuevas guerras”, pero se debe concluir que en estas guerras no se respeta el requisito de proporcionalidad y son, en consecuencia, ilícitas.
This thesis investigates the problem of the legitimacy of the use of force in the context of the Just War Theory. This theory offers a set of criteria to determine when it is legitimate to go to war (jus ad bellum), and how war must be conducted (jus in bello), and is regarded as a middle ground between two opposing traditions: realism (inter arma silent leges) and pacifism (war is evil). This thesis provides a critical review of the Just War Theory in connection with contemporary dilemmas. It highlights the fundamental and ambivalent role it plays in shaping contemporary judgements about warfare, being applied simultaneously as a justification and a limitation of war. The first chapter focuses on the characterisation of the Just War Theory as a moral reflection about war itself. It explores the idea that the foundations of the Just War Theory need to be revised, in particular the so-called “domestic analogy”. The second chapter looks into the historical development of the Just War Theory. The analysis shows that it is not a settle doctrine, but rather a group of theories developed initially during the Middle Ages and rooted in the works of Augustine of Hippo, Thomas Aquinas, Hugo Grotius and Francisco de Vitoria, amongst others. It also explores more recent revisions of the theory by other authors, such as Paul Ramsey and Michael Walzer. The last three chapters review the content of the jus ad bellum, jus in bello and jus post bellum in connection with contemporary issues. In particular, it analyses the “war” against terrorism and the Bush Doctrine, the humanitarian intervention, the theory of the double effect and the need of jus post bellum as part of the theory.

Стилі APA, Harvard, Vancouver, ISO та ін.

11

Mayoral, García-Berlanga Olga. "Estudio florístico y aportaciones a la conservación del alto Cabriel (Cuenca)." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81307.

Повний текст джерела

Анотація:

El alto Cabriel es un área montañosa inmersa en plena Serranía de Cuenca (Sistema Ibérico meridional), con altitudes entre los 910 y los 1.840 m. La zona de estudio com-prende 93.311 hectáreas -repartidas en 20 cuadrículas UTM de 10 km de lado- y 16 muni-cipios. Casi la mitad de la longitud del río Cabriel, afluente izquierdo del Júcar, discurre por la zona de estudio. Dominan las litologías calcáreas, destacando dos afloramientos de areniscas del Bundsandstein. Desde un punto de vista biogeográfico queda sectorizado en el Distrito Serrano Conquense del Subsector Oroconquense, incluido en el Sector Ibérico Maestracense de la Subprovincia Oroibérica (Provincia Mediterránea Ibérica Central). El encuadre bio-climático lo sitúa en el macrobioclima templado submediterráneo con presencia del su-prasubmediterráneo y del orosubmediterráneo. El marco legal del siguiente estudio viene definido básicamente por la existencia en Castilla-La Mancha del Catálogo Regional de Especies Amenazadas (CREA). La flora vascular del alto Cabriel está compuesta por al menos 1.466 táxones, in-cluyendo 94 subespecies y 27 híbridos, lo que supone en torno a un 20% de la flora de la Península Ibérica para un territorio que apenas ocupa el 0,16% de la superficie peninsular. El estudio de los grupos corológicos confirma el carácter mediterráneo de más del 50% de la flora, dato coherente para una zona encuadrada en la región biogeográfica Medi-terránea, si bien se aprecia una considerable proporción de táxones eurosiberianos, menor que en las montañas pirenaicas, pero mayor que en regiones próximas menos elevadas. Del total de 1.374 táxones silvestres, 115 están incluidos en el CREA como entida-des bajo algún tipo de amenaza. Un solo taxon, Sparganium natans, está incluido en la categoría “en peligro de extinción”. En la categoría “vulnerable” hay 34 táxones y 80 en la “de interés especial”. Una comparación de la flora catalogada frente al total, muestra una mayor pro-porción de elementos de óptimo en zonas frescas y húmedas de montaña, destacando la ausencia total de terófitos, considerados indicadores de mediterraneidad. En el capítulo de conservación de la flora se propone la inclusión en el CREA de una serie de táxones en la categoría de “vulnerable”: Armeria arenaria subsp. madoricola, Blechnum spicant, Campanula mollis, Dryopteris filix-mas, Frangula alnus, Galium odo-ratum, Ranunculus auricomus subsp. valdesii y Vicia orobus, y en la categoría “de interés especial”: Epipactis muelleri, Geum rivale, Melampyrum pratense, Neotinea maculata y Pulmonaria longifolia. Así mismo se aporta un listado de 46 táxones raros o amenazados no incluidos en el CREA pero que resultan de gran interés en el marco del alto Cabriel. Se confirma la relevancia botánica de las zonas ya protegidas del territorio: Parque Natural de la Serranía de Cuenca y Reserva Natural de la Laguna del Marquesado y se propone una serie de medidas que ayuden a la conservación de la flora rara o amenazada: • En relación con las entidades taxonómicas amenazadas, se categorizan en tres nive-les con pautas concretas de gestión para cada una de ellas. • Se proponen medidas de protección y conservación de enclaves de gran interés bo-tánico: • En relación con la flora de alta montaña, se propone el estudio a largo plazo de tres cimas: Collado Bajo (Valdemeca), Cerro de la Atalaya (Algarra) y Loma del Tala-yón (Casas de Garcimolina) para establecer los posibles impactos del cambio cli-mático en la biodiversidad de la alta montaña. • Se ofrece información sobre los impactos y amenazas más destacables, siendo la industria extractiva maderera, seguida de la alteración de la dinámica hidrológica y el pequeño tamaño de algunas poblaciones los factores que afectan a un mayor número de táxones amenazados.
The high Cabriel is a mountainous part of the Serranía de Cuenca (southern Iberian System), with altitudes between 910 and 1,840 m. The study area comprises 93,311 hectares spread over twenty 10 km-side UTM squares and 16 municipalities. The legal framework of the following study is defined primarily by the Regional Catalogue of Threatened Species (Catálogo Regional de Especies Amenazadas: CREA) of Castilla-La Mancha. The vascular flora of the high Cabriel is composed of at least 1,466 taxa, including 94 subspecies and 27 hybrids. Out of 1,374 wild taxa, 115 are included in the CREA as entities under some kind of threat. A comparison of the listed flora against the total sample shows a greater proportion of plants native to cool moist areas of mountain, noting the absence of therophytes, considered as indicators of Mediterranean areas. In the chapter on conservation, the inclusion in the CREA of a number of taxa is proposed, both, in the "vulnerable" category: Armeria arenaria subsp. madoricola, Blechnum spicant, Campanula mollis, Dryopteris filix-mas, Frangula alnus, Galium odoratum, Ranunculus auricomus subsp. valdesii and Vicia orobus, and in the "special interest" category: Epipactis muelleri, Geum rivale, Melampyrum pratense, Neotinea maculata and Pulmonaria longifolia. We confirm the botanical relevance of the currently protected areas and recommend taking a series of measures to help conservation of rare or threatened flora: • The threatened taxa are classified in three different levels, according to specific management guidelines. • Protection and conservation measures for sites of botanical interest are proposed. • Regarding the high mountain flora, we propose a long-term study of three peaks: Collado Bajo (Valdemeca), Cerro de la Atalaya (Algarra) and Loma del Talayón (Casas de Garcimolina) to verify the potential impacts of climate change on the biodiversity of the mountains. • We offer information on the most significant impacts and threats, with the lumber industry in the first place, followed by changes in hydrological dynamics and the small size of some populations, as the factors that affect a larger number of threatened taxa.

Стилі APA, Harvard, Vancouver, ISO та ін.

12

Pérez, Muñoz Antonio Miguel. "Influencia de la diabetes experimental sobre la reactividad de las arterias carótida y renal de conejo a la testosterona." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81308.

Повний текст джерела

Анотація:

En este trabajo hemos estudiado las modificaciones producidas por la diabetes inducida por el aloxano en los mecanismos que regulan la respuesta de las arterias carótida y renal de conejo a la testosterona. La concentración plasmática de testosterona libre y total de los conejos diabéticos fue significativamente menor que la de los conejos control. ARTERIA CARÓTIDA. En la arteria carótida, la testosterona produjo una relajación de magnitud dependiente de la concentración, que fue mayor en conejos diabéticos que en conejos control. En conejos control, ni la eliminación del endotelio ni la incubación con el inhibidor del enzima óxido nítrico sintasa (NOS), NG-nitro-L-arginina, modificó la relajación arterial a la testosterona, pero el inhibidor de la ciclooxigenasa (COX), indometacina, aumentó dicha relajación. En contraste, en arteria carótida de animal diabético la eliminación del endotelio, NG-nitro-L-arginina e indometacina inhibieron la relajación a la testosterona. En arterias carótidas de conejo diabético tanto la expresión de eNOS, iNOS y COX-2 como la liberación de prostaciclina en respuesta a la testosterona fue mayor que en arterias de conejo control. La testosterona inhibió la contracción arterial inducida por CaCl2, tanto en animales control como animales diabéticos. Estos resultados sugieren que la testosterona relaja la arteria carótida al bloquear la entrada de calcio extracelular. La diabetes aumenta la respuesta vasodilatadora de la testosterona por un mecanismo que al menos incluye un aumento de la actividad moduladora del óxido nítrico endotelial y un aumento de la liberación del vasodilatador COX-2, prostaciclina, más que la ausencia de vasoconstrictor COX-1 tromboxano A2. ARTERIA RENAL. La testosterona relajó la arteria renal de conejo control y diabético, sin diferencias significativas entre ambos. Tanto en arteria renal de conejo control como de diabético, la eliminación del endotelio inhibió la relajación arterial a la testosterona. En arterias con endotelio, la incubación con indometacina, NG-nitro-L-arginina, o con el inhibidor de los canales de K+ tetraetilamonio, no modificó significativamente la relajación arterial a la testosterona en ambos grupos de animales. En arterias sin endotelio, la indometacina aumentó la relajación a la testosterona, tanto en conejos control como en conejos diabéticos. La expresión de eNOS, iNOS y COX-1 y la liberación de tromboxano A2 y prostaciclina en respuesta a la testosterona fue similar en arterias de conejo control y de conejo diabético. Sin embargo, la expresión de COX-2 fue significativamente menor en arteria renal de conejo diabético que en conejo control. La testosterona inhibió la contracción de la arteria renal inducida por CaCl2 en ambos grupos de conejos. Estos resultados sugieren que la testosterona relaja la arteria renal de conejo. Esta relajación está modulada por tromboxano A2 de origen muscular, y está mediada parcialmente por prostaciclina endotelial, e implica el bloqueo de la entrada de Ca2+ al interior celular. A diferencia de lo observado en arteria carótida, la diabetes no modifica los mecanismos implicados en la relajación de la arteria renal a la testosterona.
Cardiovascular disease is the major cause of morbidity and mortality in diabetic patients, which in turn is also associated with low levels of serum testosterone. CAROTID ARTERIES Testosterone induced a relaxation of carotid arteries, which was higher in diabetic than in control rabbits. In control rabbits neither endothelium-removal nor the nitric oxide synthase (NOS) inhibitor NG-nitro-L-arginine (LNA) modified relaxations to testosterone, and the COX inhibitor indomethacin enhanced this relaxation. In diabetic rabbits endothelium removal, LNA or indomethacin inhibited testosterone-induced relaxation. In arteries from diabetic rabbits, eNOS, iNOS and COX-2 expression and testosterone-induced release of prostacyclin resulted enhanced in comparison with control rabbits. Testosterone inhibited CaCl2 contractions of carotid artery both in control and diabetic rabbits. These results suggest that testosterone relaxes carotid artery by blocking extracellular calcium entry. Diabetes enhances the vasodilator response of the carotid artery to testosterone by a mechanism that at least includes an increased modulatory activity of endothelial nitric oxide and an augmented release of COX-2 vasodilator, prostacyclin rather than the absence of COX-1 vasoconstrictor, thromboxane A2. RENAL ARTERIES Testosterone induced relaxation of arteries, without significant differences between control and diabetic rabbits. Both in control and diabetic rabbits endothelium-removal inhibited testosterone relaxant action. In arteries with endothelium, incubation with indomethacin, LNA or tetraethylammonium did not modify relaxations to testosterone neither in control nor in diabetic rabbits. In endothelium-denuded arteries indomethacin enhanced the relaxations to testosterone, both in control and diabetic rabbits. In arteries from diabetic rabbits, eNOS, iNOS and COX-1 expression and testosterone-induced release of thromboxane A2 and prostacyclin were not different from those observed in control rabbits. However, COX-2 expression was lower in diabetic rabbits that in control rabbits. In Ca2+-free medium, addition of CaCl2 contracted previously depolarized arteries. Testosterone inhibited CaCl2 contractions both in control and diabetic rabbits. These results show that testosterone relaxes the renal artery both in control and diabetic rabbits. This relaxation is modulated by muscular thromboxane A2, it is partially mediated by endothelial prostacyclin, and it involves the blocking of extracellular Ca2+ entry. Diabetes does not modify the mechanisms involved in the relaxant action of testosterone in the renal artery.

Стилі APA, Harvard, Vancouver, ISO та ін.

13

Anssari, Naim Saida. "The speech Acts in Moroccan Arabic: An Intercultural Approach." Doctoral thesis, Universitat de València, 2011. http://hdl.handle.net/10803/81309.

Повний текст джерела

Анотація:

This dissertation is anchored in the field of intercultural pragmatics and it embraces the central issues of the analysis of the speech acts of thanks/apology, compliments and invitations. The choice of these three speech acts is initially justified by their distinctive features as pragmatically atypically encoded and decoded in Moroccan culture: In the speech of Moroccans, apologies are sometimes provided where thanks are expected, for example, in English or Spanish. The use of Compliments is socially restricted and culturally associated with the “bad-eye” afflict. Compliments are rarely used as such granting that in Moroccan Arabic complimenters need to bless complimentees whenever a compliment is formulated. And with regard to invitations, Moroccans turn up to break literally one of the most outstanding western maxims of politeness, namely, “do not impose”. Normally, Moroccans pragmatically oblige potential invitees to accept the invitation by resorting to oaths or swearing as a pragmatic device to validate invitations
En esta tesis nos hemos propuesto analizar desde una perspectiva pragmática algunos aspectos de la cortesía en la cultura marroquí. Las experiencias adquiridas como marroquí residente en España en contacto con miembros de la cultura anfitriona nos hacen pensar que existen diferencias en el ejercicio de la cortesía entre estas dos culturas que pueden dar lugar a conflictos en el propósito comunicativo. Con el fin de explorar nuestras sospechas hemos seleccionado tres actos de habla que integran aspectos que, a pesar de ser corteses en la cultura marroquí, podrían aparecer anómalos y quizás (des)corteses si los trasladamos a la cultura española, por ejemplo. Los actos de habla a los que nos referimos son el agradecimiento/ disculpa, la invitación, y el cumplido, tal como son realizados en la comunidad de habla árabe marroquí. La elección de estos tres actos de habla estaría justificada por algunas singularidades de su manifestación en árabe marroquí. Observamos, en lo que se refiere al primer acto de habla mencionado, el uso que denominamos „extrapolado‟ de la „disculpa‟ como expresión de „agradecimiento‟. Se trata aquí de un fenómeno de neutralización entre dos esquemas de conducta cortés claramente diferenciables desde la perspectiva occidental, o de un tipo particular de uso indirecto de la disculpa como agradecimiento poco común en la cultura occidental, aunque referenciado para otros ámbitos culturales como el japonés (Coulmas, 1981). Destacamos en el caso de la invitación el carácter abiertamente impositivo que presenta: en la cultura marroquí los hablantes obligan literalmente a sus potenciales invitados a aceptar la invitación haciendo uso del juramento como estrategia de cortesía, hecho que contradice uno de los cánones de cortesía en el contexto occidental, donde la no interferencia en el espacio y la voluntad de los demás es altamente apreciada: “do not impose”, “give options” and “make your receiver feel good” (Lakoff 1973, p: 199). Finalmente, en lo que se refiere al cumplido, destacamos la asociación que presenta en la cultura marroquí con la amenaza propia del mal de ojo, lo que –como contrapartida- obliga a los usuarios del cumplido a bendecir a los destinatarios del mismo como fórmula cortés.

Стилі APA, Harvard, Vancouver, ISO та ін.

14

Mutcheson, Ryan Brock. "Diagnostic Modeling of Intra-Organizational Mechanisms for Supporting Policy Implementation." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81307.

Повний текст джерела

Анотація:

The Virginia Guidelines for Uniform Performance Standards and Evaluation Criteria for Teachers represented a significant overhaul of conventional teacher evaluation criteria in Virginia. The policy outlined seven performance standards by which all Virginia teachers would be evaluated. This study explored the application of cognitive diagnostic modeling to measure teachers' perceptions of intra-organizational mechanisms available to support educational professionals in implementing this policy. It was found that a coarse-grained, four-attribute compensatory, re-parameterized unified model (C-RUM) fit teacher perception data better and had lower standard errors than the competing finer-grained models. The Q-matrix accounted for the complex loadings of items to the four theoretically and empirically driven mechanisms of implementation support including characteristics of the policy, teachers, leadership, and the organization. The mechanisms were positively, significantly, and moderately correlated which suggested that each mechanism captured a different, yet related, component of policy implementation support. The diagnostic profile estimates indicated that the majority of teachers perceived support on items relating to "characteristics of teachers." Moreover, almost 60% of teachers were estimated to belong to profiles with perceived support on "characteristics of the policy." Finally, multiple group multinomial log-linear models (Xu and Von Davier, 2008) were used to analyze the data across subjects, grade levels, and career status. There was lower perceived support by STEM teachers than non-STEM teachers who have the same profile, suggesting that STEM teachers required differential support than non-STEM teachers. The precise diagnostic feedback on the implementation process provided by this application of diagnostic models will be beneficial to policy makers and educational leaders. Specifically, they will be better prepared to identify strengths and weaknesses and target resources for a more efficient, and potentially more effective, policy implementation process. It is assumed that when equipped with more precise diagnostic feedback, policy makers and school leaders may be able to more confidently engage in empirical decision making, especially in regards to targeting resources for short-term and long-term organizational goals subsumed within the policy implementation initiative.
Ph. D.

Стилі APA, Harvard, Vancouver, ISO та ін.

15

Pennington, Lisa Kelly. "Examining Holocaust education museum-initiated professional development: The perspective of museum educators during planning and implementation." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81309.

Повний текст джерела

Анотація:

Museums today frequently consider education as one of their priorities. As such, museum administrators will provide resources, field trips, or professional development opportunities to support teachers and schools. In an era of high-stakes testing, museums, like schools, are also influenced by standards that may dictate what information is taught and when. Therefore, to remain relevant and useful to school systems, museums have altered their educational practices to align with standards. Some museums choose to provide professional development workshops for educators that focus on a topic included within those standards. The Holocaust, a topic that is mandated by over 30 states, is an example of one such topic—albeit one that might also be difficult or controversial to teach. A regional Holocaust Museum that has chosen to provide a weeklong professional development opportunity for educators on teaching the Holocaust serves as an example of a museum providing support to local school divisions. However, the literature indicates that museums and teachers, while both working toward the goal of educating students, often have little communication with each other. While multiple studies have examined how teacher participants react to professional development workshops, far less attention has been paid to those that plan such opportunities. The multi-tiered issue of interest, then, is that little is known about how museum educators plan a Holocaust-related professional development opportunity, what role they play in workshop implementation, and what they consider to be crucial when preparing teachers to cover the topic This qualitative inquiry focused on understanding how museum educators planned and presented a weeklong Holocaust education workshop for teachers. The research question was developed to determine how museum staff members understand the Holocaust and Holocaust education, and how that understanding influenced their role when implementing the workshop. Data collection methods included observation and semi-structured interviews. Analysis methods utilized in this study included first and second cycle coding methods, as well as episode profiles for each participant. The key finding from this investigation suggests that museum educators' understanding of the Holocaust and Holocaust education greatly shaped their planning processes, as well as the role they fulfilled in workshop implementation. Though museum staff members agreed that the Holocaust is difficult knowledge, they each approached the topic and how it should be taught in a different manner. The implications of this study, its limitations, and suggestions for future research are detailed herein.
Ph. D.

Стилі APA, Harvard, Vancouver, ISO та ін.

16

Giuffria, Jonathon Michael. "Costs of Meeting Water Quality Goals under Climate Change in Urbanizing Watersheds: The Case of Difficult Run, Virginia." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81305.

Повний текст джерела

Анотація:

Urban environments have been identified as a non-point source contributor of nutrient loadings into watersheds. Interannual surges of nutrient loadings into local water systems are more damaging than mean interannual nutrient loadings. Virginia has outlined the need to reduce urban nutrient loadings. Mean interannual nutrient loadings and interannual nutrient loadings variability are expected to increase under climate change (CC). However, there are few studies that provide a predictive framework for abating nutrient loadings under CC. Thus, there is a lack of information regarding how effective water quality policy will be in the future. Using the Difficult Run watershed in Fairfax County, VA, as a site of study, we used mathematical programming to compare how the costs of abating nutrient loads differed under differing climates in the Mid-Atlantic. We first compared the costs of abating mean interannual nutrient loadings in the watershed based on historical climate conditions to those predicted for CC. We then evaluated how changes in the interannual variability of nutrient loadings for CC affect the costs of meeting watershed goals. We found that abating mean interannual nutrient loadings was substantially costlier for CC relative to meeting the same goals under historical climate conditions. Further, we found that the costs of abating interannual nutrient loadings variability increased under CC relative to meeting the same goals under historical climate. One implication of this study suggests that policy makers seeking to meet water quality goals over time must front-load supplemental BMPs today in order to offset the changes predicted for CC.
Master of Science

Стилі APA, Harvard, Vancouver, ISO та ін.

17

Kucuk, Enis. "Lean Manufacturing: Setup Time Reduction in Secondary Wood Manufacturing Facilities in North America." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81304.

Повний текст джерела

Анотація:

Since the emergence and the subsequent evolution of lean manufacturing concepts, numerous enterprises of different scale and specialties have adopted lean tools and techniques in their facilities with varying success. In general, lean manufacturing related studies have been conducted on large manufacturing firms, such as the automotive industry. Yet, lean manufacturing tools and techniques are also suited for small enterprises. Thus, the main concern of this study is to investigate the success of set-up time reduction efforts (one of the steps needed to achieve 'one-piece flow') in secondary wood products manufacturing facilities on four woodworking machines (moulder, shaper, table saw, and band saw) based on firm size. The first objective of this research is to explore the results of the implementation of set-up time reduction efforts on selected woodworking machines in enterprises of varying size. It is assumed that company size is a major factor influencing the rate of set-up time improvements. To that end, the first hypothesis, which states that 'Small firms are less successful in reducing set-up time through set-up time reduction efforts than are large firms,' has been developed and supportive questions have been corresponding created. While statistical testing of the hypotheses created for this is not possible due to the limited number of participants, speculations about the possible outcome can be made. Thus, for hypothesis one, the data obtained does not show any sign of a relationship between a firm size and the success rate of set-up time reduction efforts. The second objective of this study is to investigate how a firm's productivity is affected by set-up time reduction efforts as related to firm size. With regards to some of the weaknesses of typical small manufacturing firms (e.g. having limited budget and resources, intuitive management strategies including lack of strategic planning), large firms, by and large, are expected to be more successful in increasing productivity through set-up time reduction. To that end, the goal is to investigate results of the set-up time reduction efforts in terms of productivity improvement in manufacturing facilities. With this in mind, the second hypothesis was proposed, which reads 'Small firms achieve lower productivity gains through set-up time reduction than do large firms.' For the second hypothesis, while no conclusive proof can be offered, no sign of a relationship between firm size and productivity gain through set-up time reduction could be found. Another objective of this study is to explore the success rate of set-up time activities on the four types of woodworking machines in industry facilities considering the training activities provided by manufacturers. The aim is to compare set-up time improvement performance of manufacturers between enterprises which trained their workers/operators and enterprises which did not train their employees. To understand the relationship between the scale of firms (and/or facilities) and training activities to improve set-ups, the third hypothesis, which reads 'Small firms are less concerned with set-up time reduction through training than are large firms,' has been developed. For the third hypothesis, while testing is not possible, it appears that there is no relationship between firm size and the level of concern for set-up time reduction through training activities. The final objective of this research is to investigate whether the secondary wood manufacturing firms studied experienced a bottleneck in their production due to the long set-up actions of machines. In order to accomplish this objective, the final hypothesis, 'In both, large and small firms, bottlenecks occur at machines with high set-up times,' has been developed. The final hypothesis cannot be accepted or rejected due to the limited number of responses obtained, set-up time was a frequently indicated explanation for the occurrence of production bottlenecks in secondary wood products manufacturing firms.
Master of Science

Стилі APA, Harvard, Vancouver, ISO та ін.

18

Spangler, Derek P. "Working Memory Load Under Anxiety: Quadratic Relations to Cardiac Vagal Control and Inhibition of Distractor Interference." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/81308.

Повний текст джерела

Анотація:

Anxiety is marked by impaired inhibition of distraction (Eysenck et al., 2007). It is unclear whether these impairments are reduced or exacerbated when loading working memory (WM) with non-affective information. Cardiac vagal control has been related to emotion regulation and may serve as a proxy for load-related inhibition under anxiety (Thayer and Lane, 2009). The present study examined whether: (1) the enhancing and impairing effects of load on inhibition exist together in a nonlinear function, (2) there is a similar association between inhibition and concurrent vagal control, (3) nonlinear relations depend on trait anxiety. During anxiogenic threat-of-noise, 116 subjects maintained a digit series of varying lengths (0, 2, 4, 6 digits) while completing a visual flanker task. The task was broken into four blocks, with a baseline period preceding each. ECG was acquired throughout to quantify vagal control as high-frequency heart rate variability (HRV). There were significant quadratic relations of WM load to flanker performance and to HRV, but no associations between HRV and performance. Trait anxiety did not moderate any relations among HRV, load, and inhibition. Results indicate that low load was associated with relatively better inhibition and increased HRV. Findings suggest that attentional performance under anxiety depends on the availability of WM resources, which might be reflected by vagal control. These results have implications for treating anxiety disorders, in which emotion regulation can be optimized for attentional focus.
Ph. D.

Стилі APA, Harvard, Vancouver, ISO та ін.

19

Tine, Fatou. "Evaluation of Drought Tolerance and Forage Characteristics of Millet Cultivars." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81306.

Повний текст джерела

Анотація:

Millets are C4 annual grasses that are mainly used for food and feed. This thesis describes two studies that evaluated drought tolerance of pearl millet cultivars (Pennisetum glaucum [L.] R. Br) grown for grain. A third study is also included in the thesis that evaluated foxtail millet (Setaria italica [L] Beauv) and pearl millet grown as cover crops and forage during a pasture renovation. The main focus of the thesis involved evaluation of Senegalese pearl millet cultivars for drought tolerance. Drought is one of the most important threats to pearl millet production in Senegal as it limits yield in most parts of the country. Although water stress on pearl millet is common during the growing season, a little is known about how terminal drought affects yield in Senegalese pearl millet cultivars. To address this issue, two field experiments were conducted in 2014 and 2015. The first field study evaluated 20 pearl millet cultivars under water stress and categorized based on their yield response. Whereas the second year field trial used four cultivars from the first field trial in a more detailed study to give recommendations for farmers in Senegal. The experiments were complete randomized block designs. Pearl millet cultivars were grown under irrigation until flowering then the stress treatment was applied by stopping the irrigation in half of the plots. Eleven cultivars showed a statistical indifference to water stress and considered the most drought tolerant. Four cultivars were selected from the 11 for the second year experiment. Of these, cultivar 4 (ICMV IS 89305) and 10 (SOSAT c 88) exhibited higher tolerance to terminal water stress based on evaluation of yield components and drought stress indices. These cultivars could be a good target for further breeding and selection in Senegal. Although the cultivars were more drought tolerant, both had relatively low total biomass. When used in a larger scale, these cultivars could potentially benefit farmers in Senegal and enhance food security. The second part of this thesis addressed use of a forage type millets – specifically foxtail and pearl millet. In the US, these millets are primarily serve as a summer cover crops that can be used for forage. The objective of this experiment was to compare yield and forage quality of foxtail and pearl millet cover crops and their effect on subsequent pasture establishment. A field experiment was conducted in Virginia in 2014 to address this objective. Pearl millet and foxtail millet were randomly planted in 12 plots each and harvested in late summer. Plots were then converted to tall fescue (Schedonorus phoenix (Scop.) Holub) pasture. Foxtail millet had a significantly higher soil cover than pearl millet but the two species did not differ in terms of total biomass, forage quality, or their effect on tall fescue pasture establishment.
Master of Science

Стилі APA, Harvard, Vancouver, ISO та ін.

20

Truscello, Joseph Thomas. "The Fourth Boy." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81303.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

21

Lison, Christine Anne. "Mine Site Restoration - Maximisation of Topsoil in Restoration of Semi-arid Lands." Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/81305.

Повний текст джерела

Анотація:

This thesis examined the physical and chemical properties of soil mixes incorporating 25%, 50%, 75% and 88% waste rock and tested the influence of these properties on plant growth and development and early seedling growth. Results of the analysis indicate that increasing waste rock content causes an increase in soil salinity, a decline in soil water content but an improvement in soil water conservation. This study paves the way for efforts to optimise restoration practices.

Стилі APA, Harvard, Vancouver, ISO та ін.

22

Peralta, Escuer Mª Teresa. "Evicción de servidumbres prediales en el derecho romano clásico." Doctoral thesis, Universitat de Lleida, 1993. http://hdl.handle.net/10803/8130.

Повний текст джерела

Анотація:

El tema objecte del present treball és l'evicció de les servituds predials en el Dret romà clàssic. La qüestió central que ens plantegem és si l'evicció del servei predial generava responsabilitat i en què es fonamentava aquesta responsabilitat. En principi, com ja veurem, podem contestar de manera afirmativa.
Més concretament vam tractar de dilucidar si el comprador d'un fonc o d'una servitud podia exigir responsabilitat per evicció quan resultava vençut en una vindicatio servitutis o en una acció negatoria.
L'interès que suscita aquest tema prové precisament del seu caràcter dogmàtic i no purament històric, fet que en aquest moment és més destacable donada la implantació actualment en nous plans d'estudi on la vinculació entre el Dret romà i Dret civil es fa patent, ja que tenim un interès comú en temes interdisciplinaris.
El tema objeto del presente trabajo es la evicción de las servidumbres prediales en el Derecho romano clásico. La cuestión central que nos planteamos es si la evicción de lasservidumbres prediales generaba responsabilidad y en qué se fundamentaba esta responsabilidad. En principio, como ya veremos, podemos contestar de modo afirmativo.
Más concretamente tratamos de dilucidar si el comprador de un fundo o de una servidumbre podía exigir responsabilidad por evicción cuando resultaba vencido en una vindicatio servitutis o en una acción negatoria.
El interés que suscita este tema proviene precisamente de su carácter dogmático y no puramente histórico, hecho que en este momento es más destacable dada la implantación actualmente en nuevos planes de estudio donde la vinculación entre el Derecho romano y Derecho civil se hace patente, ya que tenemos un interés común en temas interdisciplinarios.

Стилі APA, Harvard, Vancouver, ISO та ін.

23

Anton, Ana I. "Goal identification and refinement in the specification of software-based information systems." Diss., Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/8130.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

24

星野, 幸代, та Yukiyo Hoshino. "嫦娥は家を出てからどうなったか - 魯迅「奔月」再読 (古典を読み直す)". 名古屋大学大学院国際言語文化研究科, 2005. http://hdl.handle.net/2237/8130.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

25

Abdel-Fattah, Mohamed Hafez. "Exploring the rns gene landscape in ophiostomatoid fungi and related taxa: Molecular characterization of mobile genetic elements and biochemical characterization of intron-encoded homing endonucleases." ELSEVIER, 2011. http://hdl.handle.net/1993/8130.

Повний текст джерела

Анотація:

The mitochondrial small-subunit ribosomal RNA (mt. SSU rRNA = rns) gene appears to be a reservoir for a number of group I and II introns along with the intron- encoded proteins (IEPs) such as homing endonucleases (HEases) and reverse transcriptases. The key objective for this thesis was to examine the rns gene among different groups of ophiostomatoid fungi for the presence of introns and IEPs. Overall the distribution of the introns does not appear to follow evolutionary lineages suggesting the possibility of rare horizontal gains and frequent loses. Some of the novel findings of this work were the discovery of a twintron complex inserted at position S1247 within the rns gene, here a group IIA1 intron invaded the ORF embedded within a group IC2 intron. Another new element was discovered within strains of Ophiostoma minus where a group II introns has inserted at the rns position S379; the mS379 intron represents the first mitochondrial group II intron that has an RT-ORF encoded outside Domain IV and it is the first intron reported to at position S379. The rns gene of O. minus WIN(M)371 was found to be interrupted with a group IC2 intron at position mS569 and a group IIB1 intron at position mS952 and they both encode double motif LAGLIDADG HEases referred as I-OmiI and I-OmiII respectively. These IEPs were examined in more detail to evaluate if these proteins represent functional HEases. To express I-OmiI and I-OmiII in Escherichia. coli, a codon-optimized versions of I-OmiI and I-OmiII sequences were synthesized based on differences between the fungal mitochondrial and bacterial genetic code. The optimized I-OmiI and I-OmiII sequences were cloned in the pET200/D TOPO expression vector system and transformed into E. coli BL21 (DE3). These two proteins were biochemically characterized and the results showed that: both I-OmiI and I-OmiII are functional HEases. Detailed data for I-OmiII showed that this endonuclease cleaves the target site two nucleotides upstream of the intron insertion site generating 4 nucleotide 3’overhangs.

Стилі APA, Harvard, Vancouver, ISO та ін.

26

Threadgill, S. A. "The Eastern Orthodox Church in New Zealand." Thesis, University of Canterbury. Religious Studies, 1987. http://hdl.handle.net/10092/8130.

Повний текст джерела

Анотація:

This thesis is a study of the Eastern Orthodox Church in New Zealand. It examines both the ethnic jurisdictions and the recent phenomenon of conversion to Eastern Orthodoxy. The opening chapter provides a brief history of Eastern Orthodoxy by concentrating on a number of major events. The second chapter describes the ethnic jurisdictions found in New Zealand and examines local origins and subsequent development. The first of two hypotheses tested in this thesis is discussed in Chapter 3. It is argued that Church affiliation inhibits immigrant assimilation into the wider society. Data obtained from an Interview Schedule and personal observations are deployed to test this hypothesis. Those Orthodox Churches which have a high ethnic membership are shown to display signs of ethnoreligion and ethnocentrism. The second hypothesis, discussed in Chapter 4, suggests that converts are motivated to change denominational allegiance because of feelings of deficiency and the desire for an intergrative force in modern society. Because of a lack of evidence the second claim of this hypothesis remains untested. The conclusion is reached that converts to Eastern Orthodoxy are influenced by two different motivations. It is argued that converts to the ethnic jurisdictions are, in general, motivated by a sense of personal searching. In contrast, most converts to the Antiochian Orthodox Church represent, in general, a change of denominational affiliation in reaction to what is perceived as unacceptable doctrinal change in the Anglican Church.

Стилі APA, Harvard, Vancouver, ISO та ін.

27

Joppin, Carole 1979. "Cooling performance of storable propellants for a micro rocket engine." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/8130.

Повний текст джерела

Анотація:

Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2002.
Includes bibliographical references (p. 211-213).
This thesis studies the selection of propellants for a liquid regeneratively cooled micro rocket engine focusing on the characterization of their cooling performance. Propellants will be at high pressures and under high heat fluxes in the cooling passages and will be supercritical. A summary of the propellant combination selection process and a brief evaluation of potential propellants are presented. A series of heat transfer tests in electrically heated stainless steel micro tubes 95 microns inner diameter has been conducted with two hydrocarbons JP7 and JP10 at subcritical, critical and supercritical conditions and under high heat fluxes. JP7 and JP10 have been evaluated on the basis of their heat transfer capabilities, their stability and the formation of deposits in micro channels. JP7 offers a high heat capacity. An increase in the heat transfer coefficient at the end of the tube, combined with an increase in the Stanton number, seems to indicate that JP7 undergoes an endothermic decomposition which causes a significant enhancement in heat transfer capacity. JP10 offers lower heat transfer coefficients. Both hydrocarbons show a good stability and no evidence of deposits has been seen. Previous results with supercritical ethanol were compared to the results with JP7 and JP10. JP7 seems to provide the highest heat transfer coefficients at high pressures and seems to be the most promising coolant for the regeneratively cooled rocket engine. Compatibility issues associated with the use of hydrogen peroxide as oxidizer for the liquid rocket engine have been addressed. Materials used in MEMS devices show good compatibility with 98 % hydrogen peroxide after passivation in 30 % hydrogen peroxide except for platinum.
by Carole Joppin.
S.M.

Стилі APA, Harvard, Vancouver, ISO та ін.

28

Araújo, Tanya Vianna. "Modelização do suporte metodológico e computacional à gestão do processo de desenvolvimento de sistemas de informação." Doctoral thesis, Instituto Superior de Economia e Gestão, 1995. http://hdl.handle.net/10400.5/8130.

Повний текст джерела

Анотація:

A adopção de uma metodologia quando do desenvolvimento de Sistemas de Informação depende, em grande parte, da disponibilidade de instrumentos de suporte computacional que automatizem a sua aplicação. Por outro lado, provêm da investigação em torno do suporte computacional as principais contribuições ao suporte metodológico, uma vez que, o adequado desempenho das tarefas previstas nos métodos de desenvolvimento encontra-se dependente da qualidade das ferramentas de suporte computacional. Neste trabalho aborda-se o processo de desenvolvimento de Sistemas de Informação, a partir da consideração das características do suporte metodológico e computacional actualmente oferecidos a este processo. Pretende-se, com as contribuições propostas nesta tese, enriquecer a assistência computacional hoje disponível, de forma a incorporar, nas referidas ferramentas, suporte as actividades de gestão do processo de desenvolvimento de Sistemas de Informação.
To a great extent, the adoption of a methodology for the development of Information Systems (IS) depends on the availability of automated tools. On the other hand, CASE (Computer Aided Software Engineer) tools, as they are called, are considered as the prime initiators of attempts to formalise and standardise IS Development Methods in a more detailed and rigorous way. This thesis focus upon the methodological and computational support currently available into CASE environments for the management of the IS Development Process. The author intends to contribute to the enhancement of automated tools by means of adding to CASE environments managerial support for the Process of IS Development.

Стилі APA, Harvard, Vancouver, ISO та ін.

29

Aybar, Soto Mónica. "Análisis y diseño del Sistema Informático Nacional de Defunciones para la mejora del proceso de certificación de muerte usando la metodología de desarrollo de software - versión 2.0 de RENIEC." Bachelor's thesis, Universidad Nacional Mayor de San Marcos, 2018. https://hdl.handle.net/20.500.12672/8130.

Повний текст джерела

Анотація:

Publicación a texto completo no autorizada por el autor
Detalla la experiencia profesional del autor en las fases de análisis y diseño usando las buenas prácticas de la metodología de desarrollo de software de RENIEC (MDSR) versión 2.0. El problema que se identifica fue que no existía confiabilidad y exactitud en la información registrada en el certificado de defunción debido a que el proceso se realizaba manualmente; por ello el objetivo planteado fue desarrollar un sistema, para registrar certificados de defunción, que garantice la confiabilidad y exactitud de la información permitiendo la validación de la información ingresada tanto del fallecido como del profesional de salud que declara o certifica el fallecimiento. Con la implementación del SINADEF se redujo el tiempo de registro de los certificados de defunción en un 75% y las observaciones en datos del titular en un 20%, asimismo se evidenció un incremento en el uso del sistema por parte de los establecimientos de salud, en el año 2016 la cantidad de establecimientos de salud que usaban el SINADEF era 53, en el año 2017 esta cifra aumento a 480 y se proyecta que se incremente en los siguientes años.
Trabajo de suficiencia profesional

Стилі APA, Harvard, Vancouver, ISO та ін.

30

Jesus, Jairo Ramos de. "Avaliação sorológica de anticorpos para Leishmania spp. através da reação de imunofluorescência indireta em população canina da região da Lomba do Pinheiro, cidade de Porto Alegre, RS, Brasil, a partir de casos autóctones humanos de leishmaniose tegumentar." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2006. http://hdl.handle.net/10183/8130.

Повний текст джерела

Анотація:

A Leishmaniose é uma doença parasitária causada por protozoários do gênero Leishmania, considerada em expansão no Brasil. No ano de 2002 foi notificado o primeiro caso humano autóctone de Leishmaniose Tegumentar Americana (LTA) no município de Porto Alegre, Estado do Rio Grande do Sul, Brasil. Atualmente, já foram notificados 17 casos humanos até o presente momento, e existem vários casos suspeitos, esperando por confirmação diagnóstica, o que torna o Estado uma área de risco para LTA. No meio urbano, o cão tem um papel importante, servindo de fonte de infecção e reservatório do protozoário. Sendo assim, foi realizada uma avaliação sorológica em 200 cães domiciliados no raio de 1 km a partir da localização de 3 casos autóctones humanos, ocorridos na Estrada do Rincão localizada na região do Bairro Lomba do Pinheiro, município de Porto Alegre, RS, Brasil. A reação de Imunofluorescência Indireta (IFI) foi usada para o diagnóstico sorológico dos cães participantes do estudo. A soroprevalência para anticorpos de Leishmania spp. encontrada foi de 3,5% (7/200), sendo que do total de positivos, 6 eram de indivíduos machos e 1 de uma fêmea. Utilizando o Teste Exato de Fisher para analise estatística, observou-se uma associação significativa (p = 0,0484) entre a positividade na IFI e o sexo dos animais, sendo evidenciado que os machos têm 7 (odds-ratio = 7,624) vezes mais predisposição à infecção do que as fêmeas. Nos demais aspectos analisados estatisticamente (raça e idade), não foram encontradas associações significativas.
The Leishmaniasis is a parasitc disease caused by a protozoan from the genus Leishmania, wich is considered in expansion in Brazil. In 2002 it was notify the first autochthon human case of American tegumentary leishmaniasis (ATL) in district of Porto Alegre, State of Rio Grande do Sul, Brazil. Presently, 17 human cases were notified until now, and there are many suspect cases, waiting for the diagnostic confirmation, converting this State in a risk area for the ATL. In the urban ambience, the dog plays an important role, performing as a source of infection and this protozoa reservoir. Being thus, it was realized a serologic evaluation in 200 domiciled dogs in a 1 km radius from 3 autochthon human cases that occurred at the Rincão Road, situated at the region of Lomba do Pinheiro, in district of Porto Alegre, Rio Grande do Sul State, Brazil. The Indirect immunofluorescent reaction (IFR) was used for the serologic diagnostic of the dogs that has participated in this research. The seroprevalence of Leishmania spp. antibodies was 3,5% (7/200), considering that from the totality of positives, 6 were male individuals and 1 was a female. Using the Fischer’s Accurate Test for the statistical analysis, it was observed a significant association (p=0,0484) between the positively in the IFR and the gender of the animals. In the excessively aspects analyzed statistically (race and age) there wasn’t found any significant associations. It was evidenced that males has 7 (odds-ratio=7,624) times more predisposition to this infection than the females.

Стилі APA, Harvard, Vancouver, ISO та ін.

31

Powell, Keith Baden. "School sport and political change." University of the Western Cape, 1990. http://hdl.handle.net/11394/8130.

Повний текст джерела

Анотація:

Magister Educationis - MEd
This dissertation will attempt to explain the changes that have and are taking place within south African sport and especially school sport. This will be viewed in the context of changing political developments. The central question that will be addressed is whether progressive school sports bodies can effect meaningful political change. Kuhn's theory of scientific revolutions will be used as the theoretical framework for understanding social and political change. He developed the concept of paradigms (frame of .reference) in which an established paradigm prevails, challenged by an emerging rival paradigm. This theory has been applied to the present day south African political context in which the apartheid structure is the prevailing paradigm and the democratic movement, the emerging rival paradigm.

Стилі APA, Harvard, Vancouver, ISO та ін.

32

Rich, Krista Carlene. "The Effects of Repeated Reading on the Fluency of Intermediate-Level English-as-a-Second-Language Learners: An Eye-Tracking Study." BYU ScholarsArchive, 2019. https://scholarsarchive.byu.edu/etd/8130.

Повний текст джерела

Анотація:

Most would agree that reading fluency is a concern of every L2 teacher. Repeated reading (RR) positively affects fluency development, supported by much research with L1 children. However, relatively little focus has been given to L2 RR. Most research on RR in L2 settings has focused on audio-assisted RR, used insufficient data collection methods prone to human error, and taken place in an EFL setting. In our experiment, we used eye–tracking as a direct mode of measurement of the effects that RR has on early and late reading measures. In this study, 30 intermediate-level English language learners studying in an intensive English program in the United States participated. Participants silently read three carefully leveled narrative texts, three times each. As they read each passage, an eye–tracking machine gathered data on their eye movements. With immediate repeated exposure to the texts, students improved their reading fluency in both early and late measures of reading.

Стилі APA, Harvard, Vancouver, ISO та ін.

33

Ward, Karla. "A depiction of the ghetto in feature film : a cinematic platform for confronting contemporary representations of ghetto occupancy." Master's thesis, University of Cape Town, 2008. http://hdl.handle.net/11427/8130.

Повний текст джерела

Анотація:

Includes abstract.
Includes bibliographical references (leaves 30-31).
The thesis film project, Mile in My Shoes, is a narrative depiction of a particular South African experience that consists of broader implications. It utilizes the ghetto/township setting to illustrate diverse, counter hegemonic depictions of black and especially black African characters, lifestyles, images, love, gender, and their position/focus in film.

Стилі APA, Harvard, Vancouver, ISO та ін.

34

Sankaranarayanan, Jagan. "Scalable query processing on spatial networks." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8130.

Повний текст джерела

Анотація:

Thesis (Ph. D.) -- University of Maryland, College Park, 2008.
Thesis research directed by: Dept. of Computer Science. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

Стилі APA, Harvard, Vancouver, ISO та ін.

35

Olson, Jeffrey J. "Professionalization and social justice in social work : discourses in conflict /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8130.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

36

Estrela, Vitor Behrmann. "Efeito das atividades promocionais nas vendas de um bem de consumo." reponame:Repositório Institucional do FGV, 2005. http://hdl.handle.net/10438/8130.

Повний текст джерела

Анотація:

Submitted by Marcia Bacha (marcia.bacha@fgv.br) on 2011-05-20T18:51:40Z No. of bitstreams: 1 000382286.pdf: 3168329 bytes, checksum: 7077fa7fe358eabdb828be9272ff5a2f (MD5)
Approved for entry into archive by Marcia Bacha(marcia.bacha@fgv.br) on 2011-05-20T18:52:44Z (GMT) No. of bitstreams: 1 000382286.pdf: 3168329 bytes, checksum: 7077fa7fe358eabdb828be9272ff5a2f (MD5)
Approved for entry into archive by Marcia Bacha(marcia.bacha@fgv.br) on 2011-05-20T18:53:19Z (GMT) No. of bitstreams: 1 000382286.pdf: 3168329 bytes, checksum: 7077fa7fe358eabdb828be9272ff5a2f (MD5)
Made available in DSpace on 2011-05-20T18:54:37Z (GMT). No. of bitstreams: 1 000382286.pdf: 3168329 bytes, checksum: 7077fa7fe358eabdb828be9272ff5a2f (MD5) Previous issue date: 2005
o presente trabalho investiga os efeitos da redução de preço, combinada com diversas atividades promocionais em três produtos de uma determinada marca da categoria de fraldas descartáveis num supermercado. O entendimento dos efeitos de atividades promocionais é justificado pelo fato de: a alocação das verbas para promoções, na maioria dos casos, ser feita de forma aleatória, mesmo tendo grandes parcelas dos investimentos de marketing direcionados para este fim, existirem lacunas teóricas relativas a este tema que englobem a realidade do varejo brasileiro e pelo fato do uso de dados escaneados em avaliações de marketing ainda serem incipientes no Brasil. Como objetivo final, este trabalho busca analisar o efeito simultâneo de reduções de preço combinadas a diferentes atividades promocionais no resultado das vendas de três produtos de uma marca da categoria de fraldas descartáveis, e verificar quais dos conjuntos de ações promocionais estudadas influenciam significativamente nas vendas. O conjunto de atividades promocionais estudadas variou por loja e envolveu a execução de: demonstração de produto, ilha, ponta de gôndola, banner, inclusão de faixas de gôndolas e cartazete de preço aéreo, modificação na cor das etiquetas de preço dos produtos promovidos e alterações no espaço e na organização dos produtos nas prateleiras. Foram usados dados escaneados de um experimento realizado sob condições controladas em sete lojas de uma rede supermercadista no estado de São Paulo. O método utilizado neste estudo é um pré-experimento do tipo pré-teste/pós-teste (01 X O2) e para os testes de hipóteses foi utilizado o teste t de Student para observações pareadas. Concluiu-se que, apesar de ter sido detectado aumento da média de vendas dos produtos durante o período promocional na maioria das lojas, apenas duas das 21 hipóteses testadas foram rejeitadas, ou seja, em apenas dois casos foi possível rejeitar a hipótese de que as médias de vendas do período com promoção e do período sem promoção não são iguais. Adicionalmente, foi possível perceber que o produto de maior tamanho, cuja embalagem proporcionava, dentre todos os produtos analisados, o menor custo por unidade de produto, teve os maiores crescimentos em vendas na semana da promoção, quando comparado com os outros dois produtos de menor tamanho. Espera-se que a metodologia utilizada neste trabalho possa ser aplicada no dia-a-dia do varejo para avaliação da efetividade de promoções, e que este estudo venha contribuir com o desenvolvimento de novas pesquisas sobre este fascinante tema.

Стилі APA, Harvard, Vancouver, ISO та ін.

37

Villa, Francesca <1985&gt. "Fate/zero." Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/8130.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

38

Chen, Xiangrong. "Discovering inhibitors of human Bloom syndrome protein (BLM)." Thesis, University of Sussex, 2019. http://sro.sussex.ac.uk/id/eprint/81304/.

Повний текст джерела

Стилі APA, Harvard, Vancouver, ISO та ін.

39

Фокін, С. О. "Дослідження структури, властивостей та характеристик вуглецевих інструментальних сталей після хіміко-термічної обробки". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81304.

Повний текст джерела

Анотація:

Робота присвячена дослідженню впливу режимів технологічного процесу хіміко-термічної обробки на експлуатаційні властивості інструментальних сталей. За результатами проведених досліджень встановлено вплив комплексної термічної обробки та процесу оксидування на властивості дослідних зразків із інструментальних сталей; встановлено закономірності формування структури матеріалу в залежності від технологічних параметрів процесу термічної обробки. Підібрано оптимальний склад реагентів та технологічні параметри процесу хімічного оксидування інструментальних вуглецевих та легованих сталей.

Стилі APA, Harvard, Vancouver, ISO та ін.

40

Дудченко, С. В. "Система керування газоперекачувальним агрегатом потужністю 25 МВт". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81302.

Повний текст джерела

Анотація:

Описано систему керування ГПА, як об’єкта автоматизації. Зроблено вибір технічних засобів для побудови системи автоматичного управління газоперекачувальним агрегатом. Підібрано логічний контролер МС68332. Складена математична модель системи антипомпажного регулювання нагнітача. Виконано розрахунок показників економічної ефективності розроблених у проекті заходів. Проаналізована система керування з точки зору охорони праці

Стилі APA, Harvard, Vancouver, ISO та ін.

41

Сіра, А. Ю. "Система керування технологічною установкою випарювання виробництва цукру". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81300.

Повний текст джерела

Анотація:

Робота присвячена розробці інтегрованої системи керування випарною станцією цукрового заводу, яка задовольняє вимоги до якості регулювання і контролю. Використані прилади автоматики українських і зарубіжних виробників, контролера фірми «Siemens»; розглянутий технологічний алгоритм автоматичного контролю і регулювання процесу випарювання. Висуваються технічні пропозиції, пов'язані з комплексною автоматизацією випарної станції бурякоцукрового заводу. Виконано синтез та аналіз оптимальної одноконтурної САУ при використанні ПІД - закону регулювання. Синтезовано регулятор, який забезпечує переведення системи з одного стану в інший за мінімальне число періодів квантування при наявності обмеження на керуючі впливи.

Стилі APA, Harvard, Vancouver, ISO та ін.

42

Вареник, С. В. "Дослідження властивостей сталі 12Х18Н9Т після нанесення захисних нітридних покриттів". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81306.

Повний текст джерела

Анотація:

В роботі проведено дослідження властивостей сталі 12Х18Н9Т після нанесення захисних нітридних покриттів методом магнетронного напилення. Проведені дослідження показали, що попередня іонна обробка сталевої підкладки істотно впливає на структуру і механічні властивості покриттів TiAlN. Бомбардування підкладки іонами Ti призводить до модифікації її поверхневого шару і формування на ній тонкої плівки Ti, яка трансформується в TiN після заповнення робочої камери азотом. Утворення даної плівки, а також істотне підвищення температури підкладки після її іонної обробки викликають збільшення дифузійної рухливості адатомів і сприяють епітаксійних росту стовпчастих зерен з прямими межами. Зміна характеру зростання призводить не тільки до зміни структури покриттів, але і до релаксації в них внутрішніх напружень. Це забезпечує підвищення твердості покриттів TiAlN в 1,3 рази в порівнянні з покриттями, нанесеними на необроблену підкладку.
The properties of steel 12X18H9T after application of protective nitride coatings by magnetron sputtering were investigated. The study results showed that the pre-ionic treatment of the steel substrate significantly affects the structure and mechanical properties of TiAlN coatings. The bombardment of the substrate with Ti ions leads to modifying its surface layer and forming a thin film of Ti, which is transformed into TiN after filling the working chamber with nitrogen. The formation of this film and a significant increase in the substrate's temperature after its ionic treatment cause an increase in the diffusion mobility of adatoms and promote epitaxial growth of columnar grains with straight boundaries. Changing the nature of growth leads to a change in the coatings' structure and the relaxation of their internal stresses. It provides an increase in the hardness of TiAlN coatings by 1.3 times compared to coatings applied to the untreated substrate.

Стилі APA, Harvard, Vancouver, ISO та ін.

43

Мартиненко, Є. М. "Вплив режимів карбонітрації на структуру та механічні властивості сталі Р6М5 для виготовлення ріжучих інструментів". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81305.

Повний текст джерела

Анотація:

В роботі проведено визначення впливу умов процесу карбонітрації на структуру й механічні властивості сталі Р6М5 для виготовлення ріжучих інструментів. Результати проведеного дослідження показали, що насичення поверхні швидкорізальної сталі Р6М5 азотом і вуглецем при карбонітрації в порошковому середовищі, яке складалось із вугілля, соди Na₂CO₃ і калія залізоціаністого K₄Fe(CN)₆ проводилось при температурах 450; 500 і 550 ℃. Було встановлено закономірності впливу складу насичуючого середовища і режимів карбонітрації на структуру і фазовий склад дифузійних шарів на швидкорізальній сталі Р6М5 та залежності між режимами карбонітрації, структурою дифузійних шарів і властивостями (твердість і зносостійкість) швидкорізальної сталі Р6М5. На підставі теоретичного аналізу та експериментальних досліджень розроблена енергозберігаюча та екологічно безпечна технологія зміцнення ріжучого інструменту з швидкорізальної стал Р6М5, що забезпечує підвищення його стійкості в 1,5 - 2,0 рази.

Стилі APA, Harvard, Vancouver, ISO та ін.

44

Остапенко, Б. А. "Удосконалення технологічного процесу виготовлення втулки п’яти 5М-02-07 шляхом застосування високопродуктивних інструментів та оснастки". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81308.

Повний текст джерела

Анотація:

Робота присвячена питанням проектування технологічного процесу виготовлення втулки п’яти. Проаналізовано технічні вимоги на виготовлення деталі. Визначено тип виробництва, обгрунтований спосіб отримання заготовки. Спроектовано верстатний пристрій
Работа посвящена вопросам проектирования технологического процесса изготовления втулки пяты. Проанализированы технические требования на изготовление детали. Определен тип производства, обоснован способ получения заготовки. Спроектировано станочное приспособление
The work is devoted to the designing of the technological manufacturing process of heel sleeve. Technical requirements for the manufacture of part was analyzed. The type of production was determined, the method for producing the blank was justified. The fixture was designed

Стилі APA, Harvard, Vancouver, ISO та ін.

45

Новіков, О. О. "Система керування рухомої платформи, як елемента складської логістики". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81307.

Повний текст джерела

Анотація:

В роботі було проведено огляд кінематик для створення всенаправленої рухомої платформи в складській логістиці. Була розроблена кінематична модель, а також виведене рівняння руху платформи. Також була проаналізована ефективність роботи управління з прогнозуючими моделями (MPC) та пропорційно-інтегрально-диференціальним регулятором (PID) в системі з динамічно-змінюваним навантаженням.

Стилі APA, Harvard, Vancouver, ISO та ін.

46

Шемет, А. А. "Семантичний аналіз текстів перекладу". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81303.

Повний текст джерела

Анотація:

Предметом дослідження є лексичні, граматичні, стилістичні та функціональні особливості стислих медіатекстів. Методи дослідження. Специфіка об’єкта та завдань призвела до використання комплексу практик. Зокрема, загальнонаукові методи використовувались на різних етапах, такі як емпіричний метод. Для формування фактичного матеріалу дослідження був використаний метод безперервної вибірки; порівняльний метод допоміг з’ясувати особливості стислих текстів у дискурсі ЗМІ розширених. Водночас стратегія дослідження вимагала використання лінгвістичних методів дискурсивного аналізу тексту. Метод лінгвістичного спостереження та аналізу був використаний для виявлення, відбору, вивчення стислих медіатекстів із різних джерел, уточнення їх функціональних характеристик, контекстний та ситуативний аналіз дискурсів дозволив охарактеризувати їх вербальні та невербальні одиниці; компонентний аналіз зіграв важливу роль у вивченні складної та складної лексики, семантичних утворень стислих текстів. Наукова новизна роботи полягає в тому, що вперше було проведено всебічний аналіз та описані короткі тексти українськомовного дискурсу ЗМІ, їх концептуальні текстові характеристики, лінгвістичні та функціональні особливості.
Предмет исследования - лексические, грамматические, стилистические и функциональные особенности сжатых медиатекстов. Методы исследования. Специфика объекта и задач привела к использованию набора практик. В частности, на разных этапах использовались общенаучные методы, например, эмпирический. Для формирования собственно исследовательского материала использовался метод непрерывной выборки; Сравнительный метод позволил выявить особенности лаконичных текстов в медийном дискурсе развернутых. В то же время стратегия исследования требовала использования лингвистических методов дискурсивного анализа текста. Метод лингвистического наблюдения и анализа использовался для выявления, отбора, изучения лаконичных медиатекстов из разных источников, уточнения их функциональных характеристик, контекстный и ситуационный анализ дискурсов позволил охарактеризовать их вербальные и невербальные единицы; Компонентный анализ играет важную роль в изучении сложной и сложной лексики, смысловых образований сжатых текстов.Научная новизна работы заключается в том, что впервые был проведен комплексный анализ и описаны краткие тексты украиноязычного медиа-дискурса, их концептуальные текстовые характеристики, языковые и функциональные особенности.
The object of research is short texts of Ukrainian mass media discourse of different genres. The research subject is the lexical, grammatical, stylistic, and functional features of concise media texts. Research methods. The specifics of the object and the tasks led to the use of a set of practices. In particular, general scientific methods were used at different stages, such as the empirical method. The method of continuous sampling was used to form the actual research material; the comparative method helped to elucidate the specific features of concise texts in the expanded ones' mass media discourse. At the same time, the research strategy required the use of linguistic methods of discursive text analysis. The method of linguistic observation and analysis was used to identify, select, study concise media texts from different sources, clarify their functional characteristics, contextual and situational analysis of discourses allowed to characterize their verbal and nonverbal units; component analysis played an important role in the study of complex and complex lexis, semantic formations concise texts. The work's scientific novelty is that for the first time, a comprehensive analysis was performed, and brief texts of the Ukrainian-language mass media discourse, their conceptual textual characteristics, linguistic and functional features were described.

Стилі APA, Harvard, Vancouver, ISO та ін.

47

Слюсарева, Є. О., Віталій Миколайович Король, Виталий Николаевич Король та Vitalii Mykolaiovych Korol. "Учнівський контингент залізничних училищ Сумщини в період відбудови економіки (1943–1950 рр.)". Thesis, ФОП Цьома С.П, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81309.

Повний текст джерела

Анотація:

Залізничні училища (ЗУ) – це тип навчального закладу радянської системи державних трудових резервів, що в роки ІІ Світової війни та повоєнної відбудови готував кваліфікованих робітників для шляхів сполучення. Конотопське ЗУ № 1 і Білопільське ЗУ № 2 були передовиками мережі установ трудових резервів Сумської області. Учнівський контингент залізничних училищ Сумщини формувався на добровільних засадах і складався з осіб, які щонайменше мали початкову освіту. Кількість учнів ЗУ визначалася потребами місцевої залізниці. Переважно контингент складався з хлопців, присутність дівчат у відносному значенні постійно зменшувалась.

Стилі APA, Harvard, Vancouver, ISO та ін.

48

Гурин, В. С. "Система керування відділенням розкладання виробництва двуокису титану". Master's thesis, Сумський державний університет, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81301.

Повний текст джерела

Анотація:

Робота присвячена вивченню системи управління технологічним процесом відділення розкладу. Розглянуті основні принципи роботи системи управління, загальна схема виробництв пігментної і спеціальних марок двоокису титану. Досліджена динаміка об'єкта управління, динаміка об'єкта управління при заданому впливі і динаміка поведінки АСР в реакторі розкладання температури суміші на виході з ємності в різних ситуаціях при різних параметрах налаштування регулятора, пропускної здатності клапанів і законах регулювання.

Стилі APA, Harvard, Vancouver, ISO та ін.

49

Wilhelmsen, Audun. "Efficient Ray Tracing of Sparse Voxel Octrees on an FPGA." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19415.

Повний текст джерела

Анотація:

Ray tracing of sparse voxel octrees is a method of rendering images of 3D models, which could soon become practical for use in real time applications. This is desirable as ray tracing can produce very realistic visualizations, while voxel models can represent models with very fine geometric detail. For these reason the method has attracted significant attention in recent years, but no hardware solution has been published yet. This thesis presents a design of ray tracing of sparse voxel octrees in hardware. The objective is to show if it is sensible to implement the method in hardware, and if it could be integrated on modern GPUs alongside rasterization. To this end, the techniques used in existing software implementations of this method is reviewed, and an algorithm suitable for hardware implementation is presented. The problems of integrating the method with rasterization is explored, and the algorithm is analyzed and optimized to improve efficiency in hardware. A software implementation is presented, which supports the development of a hardware design. This design is implemented using the Verilog hardware description language, and it has been simulated and synthesized for an FPGA prototype. Multiple versions of the design has been synthesized and tested, and to evaluate the impact of design parameters the test results from these designs is presented. The thesis provides a comprehensive evaluation of the proposed design, and the results indicate that the algorithm is well suited for hardware implementation. Although real-time performance was not achieved, there are indications that further optimizations should allow real-time performance on the same platform, and that a full scale implementation on a modern GPU could probably allow ray tracing with a quality which is competitive with rasterization.

Стилі APA, Harvard, Vancouver, ISO та ін.

50

Sacharuk, Ljudmila. "Transport- und Verdichtungsprozesse des Sandes beim Vollformgießen." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola&quot, 2009. http://nbn-resolving.de/urn:nbn:de:swb:105-6669168.

Повний текст джерела

Анотація:

Die Qualität der beim Vollformgießverfahren hergestellten Gussteile wird in entscheidendem Maße von der Formherstellung beeinflusst. Die Vibrationsparameter haben einen großen Einfluss auf das Sandverhalten: 1. Bei Beschleunigungen unter 1 g ist der Sand im Zustand der Pseudoverflüssigung und bewegt sich nicht intensiv gemeinsam mit dem Behälter. Dies wird für die Nachverdichtung des Sandes empfohlen. 2. Bei Beschleunigungen über 1 g bewegt sich der Sand sehr intensiv mit einer Trennung vom Behälterboden (Zustand des Vibrokochens). Dies ist für den Transport des Sandes in die Vertiefungen und Hohlräume von Modellen geeignet. In der vorliegenden Arbeit werden die Prozesse, die im Sand während der Vibration stattfinden, mathematisch beschrieben und durch Versuche bestätigt.

Стилі APA, Harvard, Vancouver, ISO та ін.

Дисертації з теми "8130m"

Оформте джерело за APA, MLA, Chicago, Harvard та іншими стилями