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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.
61

Fiabilité des Mémoires Non-Volatiles de type Flash en architectures NOR et NAND

Postel-Pellerin, Jérémy 08 December 2008 (has links) (PDF)
Cette thèse étudie divers aspects de la fiabilité des mémoires, notamment les tests en endurance et les tenues en rétention sur des mémoires Flash, en architectures NOR et NAND. Nous abordons différentes méthodes de programmation existantes dans la littérature, à savoir l'utilisation de signaux très courts et un algorithme de programmation intelligent, que nous avons appliquées sur nos cellules mémoires afin de réduire la dégradation qu'elles subissent lors des phases successives de programmation /effacement. Les améliorations observées n'étant pas significatives, nous n'avons pas choisi d'utiliser de tels signaux dans la suite de notre étude. Nous présentons également une théorie des signaux optimisés qui n'a pas été approfondie ici mais que nous avons étudiée dans une étude préalable à cette thèse. Nous présentons ensuite une modélisation des pertes de charges en rétention à partir d'équations simples de types Fowler-Nordheim et Poole-Frenkel qui se superposent et respectivement prépondérantes à des temps de rétention élevés (t>200h) et courts (t<200h). Nous proposons enfin une étude des perturbations intervenant dans une matrice mémoire, à la fois du point de vue des tensions électriques appliquées sur les cellules mais aussi du point de vue des capacités de couplages parasites. Nous avons dans un premier temps évalué les valeurs de perturbation de grille sur des cellules mémoires Flash en architecture NOR puis NAND avant de traiter des capacités parasites entre cellules dans une matrice. Nous avons été amenés à étudier ces capacités dans la cadre de l'étude des dégradations excessives des cellules inhibées lors de tests en endurance pour certaines conditions process non-optimisées. Nous avons pour cela développé une simulation TCAD bidimensionnelle à partir des étapes process réelles que nous avons ensuite calibrée sur des mesures sur silicium. Enfin cette simulation a été complétée par une prise en compte des capacités parasites de couplage, extraites sur une simulation tridimensionnelle d'une matrice 3x3 de cellules mémoires. Les valeurs de ces capacités ont été validées par des mesures sur des structures de test spécifiques et par calcul géométrique. Notre simulation bidimensionnelle émule donc un comportement tridimensionnel tout en restant dans une rapidité de calcul liée à une simulation 2D. Nous avons ainsi pu développer des simulations électriques permettant de visualiser le phénomène d'inhibition des cellules, tout au long de l'application des diverses polarisations sur la structure.
62

Writing for pleasure or necessity : conflict among literary women, 1700-1750

Beutner, Katharine 01 June 2011 (has links)
In this dissertation, I examine antagonistic relationships between women writers in the first half of the eighteenth century, focusing on the works of Delarivier Manley, Martha Fowke Sansom, Eliza Haywood, and Laetitia Pilkington. Professional rivalry among women writers represents an under-studied but vital element of the history of print culture in the early eighteenth century. I argue that the shared burden of negotiating the complicated literary marketplace did not, as critics have at times suggested, inspire women who wrote for print publication to feel for one another a sisterly benevolence. Rather, fine gradations in social class, questions of genre status and individual talent, and -- perhaps most importantly -- clashing literary ambitions spurred early eighteenth-century women writers into vicious rivalries recorded in print and driven by print culture. Women documented their literary battles in poems, in prefaces, and in autobiographical texts replete with self-justification and with attacks on former friends or disappointing patronesses. This dissertation recognizes rivalry as a crucial mode of interaction between eighteenth-century literary women and analyzes the ways in which these professional women writers labored to defend themselves not just against patriarchal pressures but against one another. In doing so, it contributes to the construction of a more complete literary history of the first half of the eighteenth century by exploring how early eighteenth-century women writers imagined their own professional lives, how they imagined the professional lives of other women, and how they therefore believed themselves influenced (or claimed themselves influenced) by the support or detraction of other women. The first two chapters of this dissertation focus on Delarivier Manley's career and writings, while the second two address the entangled writing lives of Eliza Haywood and Martha Fowke Sansom. The concluding chapter briefly examines Laetitia Pilkington's Memoirs. I investigate the way these women employed the practice of life-writing as a means of self-construction, self-promotion, and public appeal. / text
63

Change of Condition: Women's Rhetorical Strategies on Marriage, 1710-1756

Wood, Laura Thomason 12 1900 (has links)
This dissertation examines ways in which women constructed and criticized matrimony both before and after their own marriages. Social historians have argued for the rise of companionacy in the eighteenth century without paying attention to women's accounts of the fears and uncertainties surrounding the prospect of marriage. I argue that having more latitude to choose a husband did not diminish the enormous impact that the choice would have on the rest of a woman's life; if anything, choice might increase that impact. Lady Mary Wortley Montagu, Hester Mulso Chapone, Mary Delany, and Eliza Haywood recorded their anxieties about and their criticisms of marriage in public and private writings from the early years of the century into the 1750s. They often elide their own complex backgrounds in favor of generalized policy statements on what constitutes a good marriage. These women promote an ideal of marriage based on respect and similarity of character, suggesting that friendship is more honest, and durable than romantic love. This definition of ideal marriage enables these women to argue for more egalitarian marital relationships without overtly calling for a change in the wife's traditional role. The advancement of this ideal of companionacy gave women a means of promoting gender equality in marriage at a time when they considered marriage risky but socially and economically necessary.
64

Service Honest and Faithful: The Thirty-Third Volunteer Infantry Regiment in the Philippine War, 1899-1901

Andersen, Jack David 12 1900 (has links)
This manuscript is a study of the Thirty-Third Infantry, United States Volunteers, a regiment that was recruited in Texas, the South, and the Midwest and was trained by officers experienced from the Indian Wars and the Spanish-American War. This regiment served as a front-line infantry unit and then as a constabulary force during the Philippine War from 1899 until 1901. While famous in the United States as a highly effective infantry regiment during the Philippine War, the unit's fame and the lessons that it offered American war planners faded in time and were overlooked in favor of conventional fighting. In addition, the experiences of the men of the regiment belie the argument that the Philippine War was a brutal and racist imperial conflict akin to later interventions such as the Vietnam War. An examination of the Thirty-Third Infantry thus provides valuable context into a war not often studied in the United States and serves as a successful example of a counterinsurgency.
65

Minimumkrav för ett CI-system

Kiendys, Petrus, Al-Zara, Shadi January 2015 (has links)
När en grupp utvecklare jobbar med samma kodbas kan konflikter uppstå med avseende på implementationen av moduler eller delsystem som varje utvecklare individuellt jobbar på. Dessa konflikter måste snabbt lösas för att projektet ska fortskrida och inte stagnera. Utvecklare som sällan kommunicerar framför ofta okompatibla moduler eller delsystem som kan vara svåra eller omöjliga att integrera i kodbasen, detta leder ofta till s.k. “integration hell” där det kan ta väldigt lång tid att anpassa ny kod till en befintlig kodbas.En strategi som man kan ta till är “continuous integration”, ett arbetssätt som erbjuder en rad fördelar när man jobbar i grupp på en gemensam kodbas. Continuous integration är möjligt att tillämpa utan verktyg eftersom detta är ett arbetssätt. Däremot kan processen stödjas av ett s.k. “CI-system” som är något av en teknisk implementation eller påtagligt införlivande och stöd för arbetsmetoden “continuous integration”.Denna rapport syftar till att ge en inblick i vad ett CI-system är och vad den principiellt består av. Vi undersöker vad ett CI-system absolut måste bestå av genom en litteraturundersökning och en marknadsundersökning. Vi ställer upp dessa beståndsdelar som “funktionella” och “icke-funktionella” krav för ett typiskt CI-system. Vi kan på så vis kvantifiera och kategorisera olika komponenter och funktionaliteter som bör innefattas i ett typiskt CI-system. I denna rapport finns även ett bihang som visar hur man kommer igång med att bygga en egen CI-server mha. CI-systemmjukvaran “TeamCity”.Slutsatsen av vår rapport är att CI-system är ett viktigt redskap som kan underlätta mjukvaruutveckling. Med hjälp av CI-system kan man stödja utvecklingsprocessen genom att bl.a. förhindra integrationsproblem, automatisera vissa delar av arbetsprocessen (kompilering av källkod, testning av mjukvara, notifikation om stabilitet av kodbas och distribution av färdig mjukvara) samt snabbt hitta och lösa integrationsfel. / When a group of developers work on the same code base, conflicts may arise regarding the implementation of modules or subsystems that developers individually work on. These conflicts have to be resolved quickly in order for the project to advance at a steady pace. Developers who do not communicate changes or other necessary deviations may find themselves in a situation where new or modified modules or subsystems are impossible or very difficult to integrate into the mainline code-base. This often leads to so called “integration hell” where it could take huge amounts of time to adapt new code into the current state of the code-base. One strategy, which can be deployed to counteract this trend is called “continuous integration”. This practice offers a wide range of advantages when a group of developers collaborates on writing clean and stable code. Continuous integration can be put into practice without the use of any tools as it is a “way to do things” rather than an actual tool. With that said, it is possible to support the practice with a tangible tool called a CI-system.This study aims to give insight into the makings of a CI-system and what it fundamentally consists of and has to be able to do. A study of contemporary research reports regarding the subject and a survey was performed in order to substantiate claims and conclusions. Core characteristics of CI-systems are grouped into “functional requirements” and “non-functional requirements (quality attributes)”. By doing this, it is possible to quantify and categorize various core components and functionalities of a typical CI-system. This study also contains an attachment which provides instructions of how to get started with implementing your own CI-server using the CI-system software ”TeamCity”. The conclusion of this study is that a CI-system is an important tool that enables a more efficient software development process. By making use of CI-systems developers can refine the development process by preventing integration problems, automating some parts of the work process (build, test, feedback, deployment) and quickly finding and solving integration issues.

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