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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Expanding Our Concept of 'Free Will' : A case for the Development of Eliminativist Revisionism / Fri vilja? : Ett argument for utvecklingen av skeptisk revisionism

Svensk, Diana January 2021 (has links)
This paper puts forth the thesis that free will skeptics should be motivated to develop revisionisteliminativist accounts of free will. As a starting point for this argument, it discusses and expands upon Shaun Nichols (2007) modeling of our reactive attitudes in narrow and widepsychological profiles. Utilizing this descriptive and prescriptive thesis, the paper then puts forthtwo main claims: 1. that revisionism is likely to produce our best descriptive accounts of free willbeliefs, and 2. that it is plausible that eliminativist revisionist is likely to produce our best prescriptive account of free will, as it is can capture some of the value in our “narrowpsychological profile” in ways its conventional counterpart is unable to. It is then argued that these two claims, in combination with the normative influence of free will beliefs, should provide sufficient motivations to develop eliminativist revisionist accounts of free will.
22

Knitting the Velvet Gauntlet: Goldwater-Nichols, the end of the Cold War, and the development of American defense diplomacy

Greanias, George Christopher 04 May 2023 (has links)
The United States military is more than a tool of hard power. It provides the United States with a suite of diplomatic tools and is itself an important producer of American soft power. Though the many repertoires of American defense diplomacy have been carefully studied and the overall phenomenon has been theoretically investigated, their origins have not received similar attention. This research aims to uncover the causes of American defense diplomacy through an account of the American military's institutional development. It is common for defense diplomacy to be presented either as an outgrowth of 9/11 when the United States was engaged in globe-spanning irregular warfare or as part of a drive for global hegemony after the collapse of the Soviet Union. However, this research finds otherwise. A key factor in the development of contemporary defense diplomacy was the suite of institutional changes in the American national security apparatus in the 1980s. In particular, the Goldwater-Nichols Defense Reorganization Act of 1986 reconfigured the power relationships and interests of key elements of the US military thereby overdetermining the development of defense diplomacy. With this finding, this research centers Congress as a key driver of American foreign policy and highlights the sub-state institutional dynamics within the foreign policy apparatus that produced, and reproduce, defense diplomacy as an enduring habit of American statecraft. / Doctor of Philosophy / Using a broad array of archival documents, interviews, and other sources, this research investigated the (unintended) consequences of the Goldwater-Nichols Defense Reorganization Act of 1986. Those reforms reconfigured the power relationships, incentives, and preferences of the US foreign policy apparatus which in turn yielded new habits of American statecraft. Foremost among these new habits was "defense diplomacy" which, beginning in the late 1980s, became a common, enduring, and popular American foreign policy repertoire. This dissertation focuses on Goldwater-Nichols, the emergence of defense diplomacy, and its institutionalization. This project places special emphasis on the US military's central and eastern European state-building and democratization efforts during the twilight of the Cold War and the dawn of the New World Order. This is a historical institutionalist account contributing to the literature on both the "militarization" of foreign policy as well as the "civilianization" of the military.
23

Análise de controle de força usando servomecanismo eletropneumático / Analysis of force control using electropneumatic servomechanism

Araujo, Eudes Gonzaga de 31 March 2015 (has links)
Submitted by Maria Suzana Diniz (msuzanad@hotmail.com) on 2015-11-12T13:26:59Z No. of bitstreams: 1 arquivototal.pdf: 1771439 bytes, checksum: 5a0ce436783e1a04419dc8a73bf4c204 (MD5) / Made available in DSpace on 2015-11-12T13:26:59Z (GMT). No. of bitstreams: 1 arquivototal.pdf: 1771439 bytes, checksum: 5a0ce436783e1a04419dc8a73bf4c204 (MD5) Previous issue date: 2015-03-31 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES / This work presents the designs and results obtained through simulation and experimental testing of conventional controllers P, PI and PID implemented by personal computers applied to an electropneumatic servomechanism for control of force. The system consists of a double acting pneumatic cylinder, which is responsible for applying the force on a mechanical subsystem consisting of a spiral spring, representing the means of working. The proportional electropneumatic flow valve, being the element controlling the flow of compressed air to be released into the pneumatic air cylinder which results in controlled force application; a load cell converts the force applied by the cylinder onto the medium into an electrical signal. The control signal to be applied on the electropneumatic proportional flow valve comes from a signal input and output plate installed on the computer, which is controlled by an algorithm implemented in the computing environment LabVIEW®, wherein the mentioned controllers are inserted, the mathematical representative model of the servomechanism was obtained by applying the parametric identification technique Box-Jenkins (BJ) which results in a family of four models, one of which is chosen to represent the system. The adjustment of the controllers is done by using the critical gain method of Ziegler and Nichols so that the response from the system meets the performance specifications imposed on it. Simulated and experimental results of the system are presented under the inserted controllers, which are analyzed according to relevant theory to the study of conventional controllers; it appears then that the PID controller is best suited for use in its electropneumatic servomechanism. / Neste trabalho apresenta-se os projetos e resultados obtidos através de simulações e ensaios experimentais de controladores convencionais P, PI e PID implementado por computador pessoal aplicado em um servomecanismo eletropneumático para controle de força. O sistema é constituído por um cilindro pneumático de dupla ação, sendo este responsável pela aplicação da força sobre um subsistema mecânico constituído por uma mola helicoidal, representando o meio de trabalho. A válvula eletropneumática proporcional de vazão, sendo o elemento de controle da vazão de ar comprimido a ser liberada para o cilindro pneumático que resulta na aplicação da força controlada; uma célula de carga converte a força aplicada pelo cilindro sobre o meio em sinal elétrico. O sinal de controle a ser aplicado na válvula eletropneumática proporcional de vazão é proveniente de uma placa de entrada e saída de sinais instalada no computador, sendo esta comandada por um algoritmo implementado no ambiente computacional LabVIEW®, no qual os referidos controladores estão inseridos. O modelo matemático representativo do servomecanismo foi obtido aplicando-se a técnica de identificação paramétrica Box-Jenkins (BJ) da qual resulta uma família de quatro modelos, dos quais um é escolhido para representar o sistema. O ajuste dos controladores é feito utilizando-se a técnica do ganho crítico de Ziegler e Nichols, de modo que a resposta do sistema atenda as especificações de desempenho impostas ao mesmo. Resultados simulados e experimentais do sistema são apresentados sob ação dos controladores inseridos, que são analisados de acordo com a teoria pertinente ao estudo dos controladores convencionais; verifica-se então que o controlador PID é o mais adequado para utilização no respectivo servomecanismo.
24

Ekon från det förflutna : En analys av dinosaurieljud inom film / Echoes from the past : An analysis of dinosaur sound in film

Wassberg, John January 2020 (has links)
Syftet med denna uppsats är att på ett kritiskt sätt ifrågasätta det Michel Chion kallar för audiovisuella kontraktet och forska i hur det fungerar i olika kontext inom filmens värld. Samt öka förståelsen för hur ljud, bild och dokumentära inslag påverkar oss att acceptera det vi ser i filmer och serier. Fokuset kommer ligga på dinosaurier då det inte finns något som kan bekräfta hur se såg ut eller lät. Till underlag för denna forskning kommer ljuddesigners arbete tas till beaktning samt metoder som Bill Nichols skrivit om, som används inom film. Fokusområden kommer vara autenticitet och ljud ur ett audivisuellt perspektiv. / The purpose of this essay is to critically question what Michel Chion calls the audiovisual contract and research how it works in different contexts within the world of film. As well as increasing the understanding of how sound, image and documentary elements affect us to accept what we see in films and series. The focus will be on dinosaurs as there is nothing that can confirm what it looked like or sounded like. As a basis for this research, the work of sound designers will be taken into account as well as methods that Bill Nichols wrote about, which are used in film. Areas of focus will be authenticity and sound from an audiovisual perspective.
25

Reglering av drönare vid viktbelastning / Control of drone with applied weights

Johansson, Simon January 2018 (has links)
I detta arbeta gjordes en undersökning om hur en drönare kan regleras vid olika viktbelastningar. Först gjordes en teoretisk undersökning av fyra olika reglermetoder, två modellbaserade och två icke-modellbaserade metoder. De två modellbaserade var linjär kvadratisk reglering och modell prediktiv kontroll. De två icke-modellbaserade var kaskad kontroll och PID regulator. Av alla metoderna valdes det att användas en PID regulator för regleringen. För att ställa in PID testades tre olika metoder, Ziegler-Nichols, lambda och AMIGO metoden. Alla dessa tre använde stegsvaret för systemet för att beräkna parametrarna till PID. Detta resulterade i flera olika parameterval för systemet. Parametervalen testades på drönaren och AMIGO metoden gav de bästa resultaten. De olika lasterna som testades var 4.7, 6.1 och 10.8 gram. AMIGO metoden kunde användas för att reglera drönaren upp till 6.1 gram därefter blev drönarens beteende allt för olinjärt. Sammanfattningsvis går det att använda en PID som ställs in med AMIGO metoden från stegsvaret för att reglera en drönare med mindre laster upp till ungefär sex gram. / This project tested how a drone can be controlled when loads are applied to it. First four different control methods were analyzed, two model based and two non-model based. The two model based were linear quadratic regulator and model predictive control. The two non-model based were cascade control and PID regulator. The PID regulator were chosen and three different methods to tune the PID was tested. Ziegler-Nichols, lambda and AMIGO method, all used the step response from the system to determine the parameters. These different methods gave different setup of parameters and the best result came from the AMIGO method. The different loads that were applied to the system was 4.7, 6.1 and 10.8 gram. The AMIGO method were able to tune the PID up to 6.1 grams, then the system lost to much of its linear behavior. To summarize the work a PID tuned by the AMIGO method using the step response were able to control a drone with a load up to about six grams.
26

Estrategias de regulación de frecuencia en unidades generadoras hidráulicas

Villanueva Mayr, Tomás Ignacio January 2016 (has links)
Ingeniero Civil Eléctrico / Una de las principales variables a controlar en un sistema eléctrico es la frecuencia. Para asegurar su estabilidad en las 2 etapas de control (control primario (CPF) y secundario de frecuencia (CSF)) se hace imprescindible un correcto ajuste de las ganancias de los reguladores involucrados. A través de esta memoria se busca proponer una metodología para el ajuste óptimo de reguladores PI encargados del CPF, los cuales pueden ser de frecuencia o potencia-frecuencia. Existe una infinidad de técnicas para definir los parámetros de los reguladores PI, no obstante no todas se ajustan al contexto de regulación de frecuencia utilizando centrales hidráulicas. En esta memoria se estudiaron 2 metodologías: ajuste según Bode y según Ziegler-Nichols. A través de un modelo lineal se aplicaron dichas metodologías al caso particular de la central Colbún. Luego, llevando los mismos ajustes a un modelo no lineal del sistema, se evaluó el desempeño de los reguladores para distintos escenarios y configuraciones: operación en isla y red; distintos niveles de potencia; diferentes niveles de cota de embalse. Para los casos en que la central opera con una cota alta y ésta se encuentra en la sección ancha de la chimenea de equilibrio que posee el sistema, los resultados muestran una respuesta que cumple con las exigencias presentadas en la Norma Técnica. Sin embargo, para cotas inferiores, cuando la cota pasa a la sección angosta de la chimenea, se observan respuestas no acorde a lo exigido. Para ello fue necesario proponer ajustes adicionales. De los resultados se observó que con el reajuste propuesto se cumplen con las exigencias de la Norma Técnica. Luego de establecer una comparación entre las respuestas del modelo no lineal y lineal, se obtuvo que para las condiciones de cota alta es posible utilizar el modelo lineal como una buena aproximación del no lineal. Luego, el análisis realizado para el CSF se realizó utilizando el modelo lineal. Se empleó un modelo de 2 centrales, con 2 generadores en cada una, donde una central se encarga exclusivamente del CPF mientras que la otra se encarga del CSF. Se ajustaron los principales parámetros del regulador encargado del CSF: la constante de tiempo del bloque integral y la tasa de toma de carga de las unidades. A través de las simulaciones se observó que el ajuste cumple con las exigencias fijadas por la Norma Técnica. El Artículo 3-17 de la Norma Técnica propone 2 alternativas para el control secundario de frecuencia: un control centralizado en el CDEC y uno localizado en una central (en este caso Colbún). Utilizando el sistema mencionado en el párrafo anterior, se estudiaron y compararon ambas alternativas. Se observó que la opción de un control localizado en una central es una solución simple, eficiente y viable, mientras que la alternativa de un control centralizado conlleva dificultades como lo son la presencia de oscilaciones sostenidas en el tiempo (ciclos límite), las cuales se deben a la presencia de retardos en el envío y recepción de las señales y a la difcultad de coordinación entre las tomas de carga de las unidades y la fijada por el CDEC.
27

Film om film : En analys av dokumentärfilmer om fiktionsfilmer / Film on film : An analysis of documentaries on feature films

Strömberg, Daniel January 2003 (has links)
<p>This thesis is a study of documentaries about fictional feature films. The development of the DVD format has contributed strongly to their massive increase in quantity. The capacity of the format enables film companies to include more material than the feature film itself. As some people regard this type of documentary as self-righteous and presumtious, others think of it as a great educational aid giving the audience a greater understanding of the intentions of the director and others involved, thus adding more levels to the experience of watching movies. By using established theory on documentary I’m trying to find distinctive features of ‘documentary on fiction’.</p> / <p>I uppsatsen studeras dokumentärfilmer som behandlar spelfilmer. Det är en företeelse som växt starkt i och med lanseringen av det nya videoformatet DVD. Formatets kapacitet har möjliggjort att man kunnat inkludera mer material än bara själva filmen. Idag är det nästan självklart att man på något sätt dokumenterar arbetet med en film, men man gör det på många olika sätt och med olika syften. Det finns många åsikter om denna typ av dokumentär. Vissa röster hävdar att de endast kan vara självförhärligande och partiska, medan andra anser att de ger fiktionsfilmer ett större djup och tittaren en ökad respekt och förståelse för verket. </p><p>Jag vill med min undersökning hitta kännetecken för dokumentärfilmer om fiktionsfilmer och detta gör jag med hjälp av etablerad dokumentärfilmsteori. Genom analysen diskuterar jag bland annat filmernas funktion, problematik och relation till fiktionsfilmen. </p>
28

Osteoarchaeology of the Englebert Site evaluating occupational continuity through the taphonomy of human and animal remains /

Beisaw, April M. January 2007 (has links)
Thesis (Ph. D.)--State University of New York at Binghamton, Anthropology Department, 2007. / Includes bibliographical references.
29

Evaluation of a Programmable Hydraulic Valve for Drill Rig Applications

de Brun Mangs, Jonathan, Tillquist, Mikael January 2018 (has links)
The increase of intelligent systems can be seen in every industry. Integrated sensors and processors are used with internal control systems to create better performance for mobile hydraulic applications. The report describes how an evaluation was made to see if the productivity of a drill rig could be increased. This was done by implementing a programmable hydraulic valve to control the hydraulic drilling functions. The productivity would be increased by reducing the downtime due to jamming in the drill hole. Jamming occur when the system does not compensate for changes in rock conditions. By conducting a series of tests in a controlled environment with simulated loads, the response time of the CMA system and original system could be determined and compared. The CMA system had a response time that was 60-64% faster than the original system. Two different implementations of a controller was tested. Ziegler-Nichols method was used to get the initial value of the PI parameters. The controller that was implemented onboard the valve’s CPU was considered more successfull to reduce jamming. A drill test was conducted to ensure that the programmable valve could handle a drilling procedure with the controller that was implemented onboard the valve’s CPU. The valve handled the drilling procedure well.
30

Tramas, teias e jogos dramáticos em Edward Albee, Patrick Marber e Mike Nichols

Zanesco, Liane Mroginiski January 2010 (has links)
O presente trabalho explora a questão da interdisciplinaridade e da transposição de obras literárias para o cinema. Focalizando a adaptação de textos dramáticos ao cinema, o estudo propõe em um primeiro momento uma investigação teórica sobre gênero ficcional mimético; drama, a partir da perspectiva do jogo dramático como elemento construtor do metadrama implícito e explícito; transtextualidade e cinema. Num segundo momento, a investigação analisa dois textos dramáticos, Who’s afraid of Virginia Woolf? , de Edward Albee, e Closer , de Patrick Marber, e suas respectivas transposições para o cinema pelo diretor Mike Nichols, examinando os elementos e recursos que os autores utilizam para construir o jogo dramático. Posteriormente, realizase uma análise comparativa entre os textos dramáticos e entre suas adaptações cinematográficas, buscando pontos de contato e de afastamento entre as obras, priorizando elementos denotadores do jogo dramático, além de características transtextuais que possibilitam a manutenção ou a alteração de significados entre os textos dramáticos e seus respectivos filmes. / This paper explores interdisciplinary aspects related to the transposition of dramatic texts into films. First, a theoretical investigation is conducted on mimetic genre, transtextuality; on drama, from the point of view of the game as a dramatic element to build implicit and explicit metadrama, and film adaptation. Secondly, this dissertation analyzes two plays, Who's afraid of Virginia Woolf? , by Edward Albee, and Closer , by Patrick Marber, as well as their film adaptations by director Mike Nichols, and examines the elements and features that the authors use to create the dramatic games. Later, the plays and their film adaptations are contrasted in order to investigate elements of dramatic games, and transtextual characteristics that allow the maintenance or the alteration of meaning between the plays and their correspondent films.

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