Ce travail de thèse porte sur le développement de la technique de Vélocimétrie par Marquage Moléculaire (Molecular Tagging Velocimetry - MTV) pour l’étude expérimentale des micro-écoulements gazeux internes. Les micro-écoulements gazeux sont des écoulements raréfiés, caractérisés par un nombre de Knudsen non négligeable. L’analyse de la littérature montre un besoin crucial de données expérimentales de grandeurs locales relatives aux micro-écoulements gazeux. Ces données permettraient une discussion pertinente de la précision et des limites d’applicabilité des différents modèles théoriques proposés dans la littérature pour l’étude du régime de glissement, régime raréfié le plus souvent rencontré en microfluidique gazeuse. Dans cette optique, un banc d’essais expérimental a été développé pour la mesure de champs de vitesses par MTV. La technique consiste à suivre des molécules traceuses d’acétone introduites dans le gaz en écoulement et qui deviennent phosphorescentes lorsqu’elles sont excitées par une source lumineuse UV. Les différents compromis pris en compte pour le développement de ce banc (choix du traceur et du matériau, conception du canal instrumenté,…), ainsi que les techniques d’acquisition et de traitement de signal sont détaillés dans le manuscrit. L’analyse expérimentale commence par une étude du signal de phosphorescence de l’acétone. Ensuite, la technique de vélocimétrie par marquage moléculaire est validée par la mesure de champs de vitesses dans des écoulements laminaires confinés en régime non raréfié. Les résultats obtenus sont comparés à des profils de vitesse théoriques d’un écoulement de Poiseuille à pression atmosphérique. Enfin, les premiers résultats obtenus à basse pression sont présentés et commentés. La détection du signal à un niveau de pression de 1kPa est encourageante et offre de nombreuses perspectives pour l’exploration d’écoulements en régime raréfié / This thesis focuses on the development of Molecular Tagging Velocimetry (MTV) technique for the experimental analysis of internal microflows of gases. Gaseous microflows are rarefied flows characterized by a non-negligible Knudsen number. A literature review highlights a crucial need of experimental data on velocity fields within gaseous microflows. These data are required for a relevant discussion on the validity and limits of applicability of the different boundary conditions proposed in the slip flow, which is a regime often encountered in gaseous microsystems. An experimental setup has been designed for analyzing by MTV the velocity distribution in microchannels. The technique consists in detecting the displacement of acetone molecules, introduced as tracers in a gas flow; these molecules exhibit phosphorescence once excited by a UV light source. The various compromises taken into account for the setup design (choice of tracer, laser, channel material and design, camera and intensifier…), as well as the acquisition and processing techniques are detailed in the manuscript. The experimental analysis starts with a study of the acetone phosphorescence signal. Then, the MTV technique is validated by velocity field measurements in internal laminar flows through a rectangular minichannel in non-rarefied regime. The obtained results are successfully compared to the theoretical velocity profile of a Poiseuille flow. Finally, preliminary results obtained at lower pressures are presented and commented. The signal detection at a pressure level as low as 1 kPa is encouraging and draws various perspectives for the exploration of rarefied regimes

In this thesis, there is processed design of test procedure for innovative HVAC system. This design was created in consecutive phases with use of thermal manikin Newton and climate chamber. Correlation between data from thermal manikin and tests subjects and possible design changes were evaluated after each phase. There are mentioned basics of human thermoregulation, factors which affect thermal comfort and ways in which is possible to measure and rate it with use of thermal comfort scales and comfort zones diagram. The thesis includes survey for testing thermal comfort and scales which are used to complete it. In the end, we mentioned some results alongside with our approach in evaluation of correlation between thermal manikin and test. There is also final design of test procedure for innovative HVAC system which would be used for its calibration and final functionality testing.

自民國七十四年台北市出現第一家「MTV 視聽中心」以來，短短數年間全台各地陸續 都可見到MTV 三個字的跡影。據非正式的估計，目前台灣各地的MTV 視聽中心總數超 過九百家，消費對象除了一般青年學生外，上班族也是主要人口之一。為瞭解此一我 國獨特的文化現象之受青睞的原因，本研究擬從傳播研究的「使用與滿足」途徑為理 論根據，探討MTV 消費者的使用動機與消費行為情形。 由於國外MTV 性質與我國差異懸殊，且研究文獻多偏向內容分析，而我國相關文獻到 目前為止只有一篇，因此本研究文獻探討部分以性質較類似的電子媒介之動機與行為 文獻為探討對象，並從中發展本研究之假設。 為蒐集本研究資料，於七十八年一月間，在台北市、高雄市各大MTV 視聽中心，以隨機、立意和分層的訪員問卷親訪法，蒐集樣本資料四六六份。問卷內 容包括三大部分：（一）使用行為，（二）使用動機，（三）基本資料。為使本研究 精確度提高，資料編碼工作由研究者獨力完成，經資料輸入電腦後，以政大電算中心 的PRIME ７５０，SPSSX 及 AT 級 PC 中的 SPSS╱PC＋ 統計軟體進行分析工作。 研究發現MTV 消費者的使用動機有六：找刺激、學習、鬆弛、情境因素、朋友相聚和 打發時間。消費行為方面，消費者通常一個月去二、三次，使用時間平常以晚上六點 後最多人，週六和假日則以下午消費人數最多。至於消費者最常看的影片，以西洋片 佔最大多數，依內容情節分，則以科幻片、詼諧劇、，恐怖片、警探片和愛情文藝片 最受歡迎。而這些影片的消息來源通常得自現場再行挑選、媒體上的電影廣告、朋友 推薦和視聽中心推薦。 本研究因屬對台灣特有MTV 現象之初步動機分析，因此雖然從中發現六大動機因素， 及其它使用行為結果，但限於研究者本身人力、財力與時間上的考量，末能作進一步 的探討，建議以後研究不妨從消費者個人的人格特質、生活習性及社會環境因素面向 ，作更深一層的探索。

<p>Purpose/Aim: The purpose of this essay is to analyze and discuss how MTV is affected by the development that takes place on the world’s media market. The aim is also to see how MTV’s target group’s image of the channel can give guidelines in how MTV should act in this new media era.</p><p>Material/method: I have examined the development on the media market and then created a model consisting of relevant factors that could affect a TV-channel today. Those factors and the two factors image and profile are then applied on MTV. I have done three interviews with people who work at MTV Networks Nordic and one interview with a person who used to work there. I also arranged three focus groups with members within the target group of MTV (15-24 year). The questions for all of the interviews were based on theories relevant to this study.</p><p>Main results: The results from the interviews and the focus groups showed that the profile and the image of MTV did not agree completely. An example of that is that the staffs of MTV saw the channel as a youth channel while the target group saw it as a music channel. MTV seems to go from being a niche channel to becoming a broader channel, a move that is quite unusual on today’s media market where niche marketing is the main strategy for TV-channels. People within the target group 15-24 uses the Internet more than TV an average day, and the younger members of my focus groups used the Internet more than the older ones. None of the members of the target group watched TV on their mobile phone but they assumed that younger kids would use it a lot in the future. All agreed upon that MTV was a suitable channel for mobile-TV.</p>

Purpose/Aim: The purpose of this essay is to analyze and discuss how MTV is affected by the development that takes place on the world’s media market. The aim is also to see how MTV’s target group’s image of the channel can give guidelines in how MTV should act in this new media era. Material/method: I have examined the development on the media market and then created a model consisting of relevant factors that could affect a TV-channel today. Those factors and the two factors image and profile are then applied on MTV. I have done three interviews with people who work at MTV Networks Nordic and one interview with a person who used to work there. I also arranged three focus groups with members within the target group of MTV (15-24 year). The questions for all of the interviews were based on theories relevant to this study. Main results: The results from the interviews and the focus groups showed that the profile and the image of MTV did not agree completely. An example of that is that the staffs of MTV saw the channel as a youth channel while the target group saw it as a music channel. MTV seems to go from being a niche channel to becoming a broader channel, a move that is quite unusual on today’s media market where niche marketing is the main strategy for TV-channels. People within the target group 15-24 uses the Internet more than TV an average day, and the younger members of my focus groups used the Internet more than the older ones. None of the members of the target group watched TV on their mobile phone but they assumed that younger kids would use it a lot in the future. All agreed upon that MTV was a suitable channel for mobile-TV.

No description available.

<p>This is a case study of the music channel MTV and it’s impact on the Swedish mediascape. We want to look into the process that lies behind this huge intercontinental corporation. Through literature studies we present the mechanism’s that paved the way for MTV growing into the number one music channel of modern time. To investigate how MTV was received in Sweden, we analyse articles taken from databases providing us with essential information about how Swedish journalist’s debate the issue. To show an assumed development within the Swedish mediascape we are using two different time periods, the first represents the year 1993 through to 1995 and the second, 2000 through 2003. These time periods are also used within statistical research included in this paper. This part shows the differences between MTV and other music channels that are competitors in the Swedish mediascape. Altogether these parts helps us to bring out topics that hopefully gives answers to our main quandary – what kind of effect has MTV had on the Swedish mediascape?</p>

A mídia impressa foi o foco central deste estudo, que se centrou na análise de revistas e, simultaneamente, na discussão das mesmas por um grupo de acadêmicos de Comunicação Social. A pesquisa busca compreender como uma expressão ambivalente como “ter atitude” — disseminada amplamente na mídia — acaba por mostrar as fraturas de um conceito historicamente construído como o de “juventude”; ou seja, busco analisar a importância da expressão “ter atitude”, na medida em que, por meio dela, podemos observar o quanto características dadas como “imutáveis” para caracterizar os jovens vêm se modificando, vêm se dissolvendo.Tendo como referência teórica privilegiada os estudos de Zygmunt Bauman, desenvolvi análises que colocam em relevo a estreita relação entre a cultura jovem e a globalização. Tal articulação permitiu‐me estruturar discussões sobre os conceitos que emergiram como centrais na tese: juventude líquida, ambivalência e identidade. Dois conjuntos de materiais constituíram o corpus de análise da pesquisa. O primeiro conjunto foi composto por materiais extraídos da Revista MTV (especialmente, editoriais e campanhas publicitárias). O segundo conjunto resulta das discussões desenvolvidas junto a dois grupos de acadêmicos do curso de Comunicação do Centro Universitário Feevale. A investigação evidenciou de que maneira uma expressão ambivalente como “ter atitude” encontra num universo igualmente ambivalente (o dos jovens) um lócus notável para sua efetivação, e analisou de que forma e por quais caminhos ela acaba por encontrar no universo jovem um meio singular e sugestivo para seu implemento. / Printed media has been the central focus of this study, which has concentrated on both the analysis and discussion of magazines by a group of students of Social Communication. The research is an attempt to understand how an ambivalent phrase such as “showing attitude” – widely spread in media – has ended up uncovering fractures of a historically built concept such as “youth”. I have tried to analyze the importance of the phrase “showing attitude” in the sense that, through it, we can observe how features viewed as “immutable” that characterize youths have both changed and dissolved. Having the studies carried out by Zigmund Bauman as a privileged theoretical reference, the analyses have emphasized the strict relationship between young culture and globalization. Such articulation has allowed for structuring discussions about the concepts that emerged as central to this thesis: liquid youth, ambivalence and identity. Two sets of materials have constituted the corpus of analysis. Materials extracted from MTV Magazine (especially editorials and advertising campaigns) composed the first set. The second set resulted from discussions developed with two groups of Communication students of Centro Universitário Feevale. The investigation has evidenced the way an ambivalent phrase such as “showing attitude” has reached a remarkable locus in an equally ambivalent universe (that of young people) so as to take effect. It has also analyzed how and in which ways that phrase has found a singular and suggestive means, in the young universe, to be implemented.

A mídia impressa foi o foco central deste estudo, que se centrou na análise de revistas e, simultaneamente, na discussão das mesmas por um grupo de acadêmicos de Comunicação Social. A pesquisa busca compreender como uma expressão ambivalente como “ter atitude” — disseminada amplamente na mídia — acaba por mostrar as fraturas de um conceito historicamente construído como o de “juventude”; ou seja, busco analisar a importância da expressão “ter atitude”, na medida em que, por meio dela, podemos observar o quanto características dadas como “imutáveis” para caracterizar os jovens vêm se modificando, vêm se dissolvendo.Tendo como referência teórica privilegiada os estudos de Zygmunt Bauman, desenvolvi análises que colocam em relevo a estreita relação entre a cultura jovem e a globalização. Tal articulação permitiu‐me estruturar discussões sobre os conceitos que emergiram como centrais na tese: juventude líquida, ambivalência e identidade. Dois conjuntos de materiais constituíram o corpus de análise da pesquisa. O primeiro conjunto foi composto por materiais extraídos da Revista MTV (especialmente, editoriais e campanhas publicitárias). O segundo conjunto resulta das discussões desenvolvidas junto a dois grupos de acadêmicos do curso de Comunicação do Centro Universitário Feevale. A investigação evidenciou de que maneira uma expressão ambivalente como “ter atitude” encontra num universo igualmente ambivalente (o dos jovens) um lócus notável para sua efetivação, e analisou de que forma e por quais caminhos ela acaba por encontrar no universo jovem um meio singular e sugestivo para seu implemento. / Printed media has been the central focus of this study, which has concentrated on both the analysis and discussion of magazines by a group of students of Social Communication. The research is an attempt to understand how an ambivalent phrase such as “showing attitude” – widely spread in media – has ended up uncovering fractures of a historically built concept such as “youth”. I have tried to analyze the importance of the phrase “showing attitude” in the sense that, through it, we can observe how features viewed as “immutable” that characterize youths have both changed and dissolved. Having the studies carried out by Zigmund Bauman as a privileged theoretical reference, the analyses have emphasized the strict relationship between young culture and globalization. Such articulation has allowed for structuring discussions about the concepts that emerged as central to this thesis: liquid youth, ambivalence and identity. Two sets of materials have constituted the corpus of analysis. Materials extracted from MTV Magazine (especially editorials and advertising campaigns) composed the first set. The second set resulted from discussions developed with two groups of Communication students of Centro Universitário Feevale. The investigation has evidenced the way an ambivalent phrase such as “showing attitude” has reached a remarkable locus in an equally ambivalent universe (that of young people) so as to take effect. It has also analyzed how and in which ways that phrase has found a singular and suggestive means, in the young universe, to be implemented.

This is a case study of the music channel MTV and it’s impact on the Swedish mediascape. We want to look into the process that lies behind this huge intercontinental corporation. Through literature studies we present the mechanism’s that paved the way for MTV growing into the number one music channel of modern time. To investigate how MTV was received in Sweden, we analyse articles taken from databases providing us with essential information about how Swedish journalist’s debate the issue. To show an assumed development within the Swedish mediascape we are using two different time periods, the first represents the year 1993 through to 1995 and the second, 2000 through 2003. These time periods are also used within statistical research included in this paper. This part shows the differences between MTV and other music channels that are competitors in the Swedish mediascape. Altogether these parts helps us to bring out topics that hopefully gives answers to our main quandary – what kind of effect has MTV had on the Swedish mediascape?