Os requisitos de linearidade e ruído em aplicações multi-banda e multi-protocolo fazem que o projeto de misturadores RF seja uma tarefa muito desafiadora. Nesta dissertação dois misturadores com base na topologia célula de Gilbert são propostas. Linearidade e ruído foram as principais figuras de mérito consideradas para o misturadores propostos. Para aumento linearidade, foi utilizada uma técnica de cancelamento de harmônicas pós-distorção (PDHC). E, para redução de ruído, foi utilizado um circuito de redução dinâmica de corrente combinada com um filtro LC sintonizado na frequência do LO e cancelamento de ruído térmico. A análise por séries Volterra do estágio transcondutância do misturador proposto é reportada para mostrar a eficácia da técnica de cancelamento de harmônicos com pósdistorção. O circuito de linearização adicionado não aumenta o tamanho do misturador, nem degrada ganho de conversão, figura de ruído, ou consumo de potência. Simulações elétricas foram realizadas em nível de pós-layout para a primeira topologia e nível esquemático para a segunda topologia, usando processo CMOS de 0.13 mm da IBM. As melhorias em IIP2 e IIP3 são apresentadas em comparação com o misturador do tipo célula de Gilbert convencional. Para a primeira topologia, foi obtido um ganho de conversão de 10.2 dB com uma NF de 12 dB para o misturador projetado funcionando a 2 GHz, com uma frequência intermediária de 500 kHz. E um IIP2 e IIP3 de 55 dBm e 10.9 dBm, respectivamente, consumindo apenas 5.3 mW de uma fonte de 1.2 V. Para a segunda topologia, foram obtidos um ganho de conversão de [13.8 ~11] dB, um coeficiente de reflexão na entrada (S11) de [-18 ~-9.5] dB e um NF de [8.5 ~11] dB no intervalo de 1 a 6 GHz. Para as especificações de linearidade, um valor médio de IIP3 de 0 dBm foi alcançado para toda a faixa de frequência, consumindo 19.3 mW a partir de uma fonte de 1.2 V. Especificações adequadas para operação multi-banda e multi-protocolo. / The linearity and noise requirements in multi-band multi-standard applications make the design of RF CMOS mixers a very challenging task. In this dissertation two downconversion mixers based on the Gilbert-cell topology are proposed. Linearity and noise were the principal figures of merit for the proposed mixers. For linearity improvement, post distortion harmonic cancellation (PDHC) was employed. And, for noise reduction, dynamic current injection combined with an LC filter tuned at the LO frequency and thermal-noise cancellation were used. A Volterra series analysis of the transconductance stage is reported to show the effectiveness of the post-distortion harmonic cancellation technique. The added linearization circuitry does not increase the size of the mixer, nor does it degrade conversion gain, noise figure, or power consumption. Electrical simulations were performed on extracted layout level from the first topology and schematic level from the second topology. Using an IBM 0.13 mm CMOS process improvements on IIP3 and IIP2 in comparison to the conventional Gilbert-cell mixer are demonstrated. For the first topology, we achieved a conversion gain of 10.2 dB with a NF of 12 dB for the designed mixer working at 2 GHz, with a low-IF of 500 kHz and an IIP2 and IIP3 of 55 dBm and 10.9 dBm, respectively, while consuming only 5.3 mW from a 1.2 V supply. For the second topology, we achieved a conversion gain range of [13.8 ~11] dB, an input reflection coefficient (S11) of [-18 ~-9.5] dB and a NF of [8.5 ~11] dB in the frequency range of 1 to 6 GHz. For the linearity specs, an IIP3 of 0 dBm was achieved for the whole frequency range, while consuming 19.3 mW from a 1.2 V supply, making the second topology well suited for multi-band and multi-standard operation.

O objetivo deste trabalho é apresentar uma leitura do romance Drácula, do escritor irlandês Bram Stoker, publicado em 1897. O propósito do estudo é identificar os arquétipos e imagens predominantes em Drácula, mostrando em que medida eles representam questões pertinentes à sociedade vitoriana e aos públicos receptores que obra teve desde então. A obra é publicada em um momento histórico que se configura ponto crucial na conflituada transição entre os antigos valores rurais britânicos e os da moderna sociedade urbana contemporânea, e a conseqüência desta transição é uma mudança drástica no código comportamental britânico. Diversos elementos desta transformação podem ser identificados nas representações simbólicas encontradas no romance de Stoker, e a voracidade com que a obra é consumida pelos leitores desde a época vitoriana se configura sintoma das premências decorrentes da excessiva repressão daquele período. A análise do arquétipo do vampiro e das imagens arquetípicas apresentadas em Drácula se dará predominantemente através do exame das implicações psicológicas e antropológicas ligadas ao imaginário do Sangue. O embasamento teórico se ampara nas contribuições prestadas por Carl Gustav Jung e Gilbert Durand. A dissertação vem subdividida em três capítulos. Na primeira parte do capítulo um apresento as contextualizações referentes a certos fenômenos observados na sociedade vitoriana, especialmente no que tange às implicaturas de gênero no código comportamental da época, e na segunda apresento contextualizações referentes a personagens históricos que influenciaram Bram Stoker na criação de seu personagem principal. No segundo capítulo, remeto ao embasamento teórico, apresentando os conceitos definidos por Jung nos quais a leitura do capítulo 3 se ampara, bem como analiso símbolos, imagens e arquétipos em Drácula de acordo com os regimes da imaginação propostos por Durand. No terceiro capítulo ofereço minha leitura do romance, na qual identifico e analiso imagens e símbolos do Sangue presentes no romance. Na conclusão, apresento as últimas considerações, com o intuito de ratificar as fortes ligações que se estabelecem entre os significados velados inscritos no romance e as vivências da sociedade receptora, tendo como base o mito do vampiro e sua associação com o imaginário do sangue na tentativa de explicar a bemsucedida e contínua recepção do romance. / The aim of this thesis is to present a reading of Dracula, published in 1897 by the Irish author Bram Stoker. The purpose of the investigation is to identify the predominant archetypes and images in Dracula, showing to what extent they represent relevant issues to Victorian society and the audiences the novel has had since then. The work is published in a crucial historical moment, during which the British traditional rural values are replaced by modern and urban ones. A major consequence of such a transition is a drastic change in the British behavioral code. Several elements in such a transformation can be identified in Stoker’s novel, and the eagerness with which the work was accepted by Victorian audiences is a symptom of the needs that resulted from the excessive repression from that period. The analysis of the archetype of the vampire and the archetypal images presented in Dracula unfolds predominantly through the examination of the psychological and anthropological implications connected to blood imagery. The main theoretical tools come from the studies of Carl Gustav Jung and Gilbert Durand. The thesis is subdivided in three chapters. In the first part of chapter one I present some contextualization referring to certain phenomena perceived in the Victorian society, mainly the ones regarding the gender implications in the behavioral code of the time, and in the second part I present contextualization connected to historical characters who influenced Bram Stoker in the creation of his main character. In chapter two I present the theoretical approach, introducing the concepts defined by Jung upon which the reading in chapter 3 is based. I also analyze symbols, images and archetypes in Dracula according to the orders of the image proposed by Durand. In chapter three I offer my reading, identifying and analyzing blood images and symbols in the novel. In the conclusion, I present the final considerations, with the purpose of ratifying the strong bonds connecting the underlying meanings present in the novel and the life experience of the audience, having as a basis the myth of the vampire and its association to the blood imaginary, in an attempt to explain the successful and continuous reception of the novel.

Orientador: Laymert Garcia dos Santos / Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Filosofia e Ciências Humanas / Made available in DSpace on 2018-08-25T10:31:35Z (GMT). No. of bitstreams: 1 Silva_RafaelAlvesda_D.pdf: 78839364 bytes, checksum: c8bf2b22aefbef5dc600de1f51336e28 (MD5) Previous issue date: 2014 / Resumo: Através de sinais captados a partir da mídia, da arte contemporânea e de uma experiência pessoal de atuação em empresas, problematiza-se a sociedade do trabalho, seu mal estar e contradições político-econômicas, passando por autores como Foucault e Robert Kurz. A partir daí, são discutidos os conceitos de trabalho e trabalhador, considerando a relação destes com o desenvolvimento tecnológico. Com a intenção de perscrutar em Marx uma análise sobre a técnica e reflexões sobre o trabalho, o trabalhador e o humano, é feita uma leitura desse autor privilegiando textos como os Manuscritos de 1844, A ideologia Alemã, os Grundrisse e os Manuscritos de 1861-1863, em que há cadernos de estudos de Marx sobre a ciência e as máquinas. E buscando uma reflexão que permita pensar uma outra relação do humano com a técnica e o trabalho, recorre-se à leitura de Gilbert Simondon, especificamente sua tese sobre o modo de existência dos objetos técnicos e seu conceito de individuação. A preocupação geral é problematizar o trabalho e o trabalhador como limitadores das potências do humano, além das linhas de fuga possíveis a partir de uma relação positiva com as tecnologias / Abstract: Through signals from the media, contemporary art and personal experience working in companies, we discusses the labour society, its uneasiness and the political and economic contradictions, passing by authors such as Foucault and Robert Kurz. Thereafter, concepts of work and worker are discussed considering their relationships with technological development. Intending to make a careful investigation in Marx regarding techniques and the labour, the worker and the human, we perform a reading of this author privileging texts such as the 1844 Manuscripts, The German Ideology, the Grundrisse and 1861-1863 Manuscripts, wherein we can find Marx¿s study books on science and machines. Searching for a new kind of thinking the relationship of human with the technique and the work, we resort to Gilbert Simondon, specifically his thesis on the mode of existence of technical objects and the concept of individuation. The general concern is to discuss the work and the worker as constraints to human potentials, beyond the possible lines of flight towards a positive relationship with technologies / Doutorado / Ciencias Sociais / Doutor em Ciências Sociais

Doctorat en philosophie et lettres / info:eu-repo/semantics/nonPublished

L’objet de cette recherche revient à interroger le rôle du hasard dans le processus d’individuation tel qu’il est théorisé par Gilbert Simondon. Dans cette perspective, le hasard, élaboré à partir du concept darwinien de chance, doit être considéré comme opérateur théorique et concept explicatif d’une théorie des processus de genèse de forme individuelle, et non comme un principe métaphysique ou une mesure de l’ignorance. Il qualifie dans l’individuation la modalité de la rencontre entre la singularité, qui donne forme à l’être individuel, et le milieu métastable individuel, susceptible de transformations. Suivant cette perspective, le hasard devient un des opérateurs de l’invention des structures individuelles singulières, plurielles, et novatrices, formes de vie et manières d’exister, qui sont élaborées comme solution à des problèmes par le processus d’individuation. Cette analyse de la pensée simondonienne va permettre de mettre en place les linéaments d’une théorie de la rencontre individuante, induisant une conception particulière de l’individualité humaine, qui est susceptible d’entrer en dialogue avec les thèses de la sociologie dispositionnelle (P. Bourdieu, B. Lahire). Comme invention, l’opération d’individuation sera alors analysable à partir du concept biologique d’exaptation (S. J. Gould), qui explicite dans l’évolution l’invention de couples structuro-fonctionnels nouveaux, à partir d’un jeu entre hasard et invention vitale. / This research aims to question the role of chance in the individuation process as it was theorized by Gilbert Simondon. In this context, chance, which was drawn up based on the Darwinian concept of chance, must be considered as a theoretical operator and as an explanatory concept of the genesis of individual form, and not as a metaphysical principle or as a measure of ignorance. It characterises within the individuation the modality of the encounter between the singularity which shapes the individual being and the individual metastable environment which is capable of being transformed. From this point of view, chance turns out to be one of the invention operators of singular, individual, plural and innovative structures which are ways of existing, created as solutions to problems by the individuation process itself. This analysis of Simondon’s philosophy allows us to outline a theory of the individuating encounter leading us to think of human individuality through a specific approach which enters into dialogue with the theses of the dispositional sociology (P. Bourdieu, B. Lahire). From an invention point of view, the individuation operation can thus be analysed using the biological concept of exaptation (S. J. Gould) which makes very explicit the invention of new structure-function couples in evolution based on an articulation between chance and vital invention.

No description available.

The study deals with the evolution of French policy towards the Saar from 1945, when the first concepts of an economic union between France and the Saar, to the refusal of the Saar to become an international territory governed by the Council of Europe in 1955. Analyzing the developments within the French administration in Paris and in Saarbrücken, the aim of the study is to prove that the failure of France to secure an annexation of the Saar resulted from a variety of internal and external forces, the most notable being the lack of interest, co-ordination and competence of the French bureaucracy regarding the Saar. Shortly after the conclusion of World War II, France justified its claims in the Saar by a dire need of coal and the necessity of curbing future German economic potential. The creation of an economic union between France and the Saar was based on superficial and irresponsible planning, which proved to be the stumbling block of future French-Saar relations. The troubled partnership, initially a cause for optimism, resulted in the alienation of both countries. At the same time the rebirth of Western Germany caused the pragmatic view of the Saar to doubt the future of a union with a fragile and economically weak France. Following the rejection of the Saar Statute, a French plan of...

This thesis presents four-quadrant CMOS current-mode multiplier architectures based on the bipolar Gilbert cell multiplier architecture. Multipliers are designed using the CMOS subthreshold region to take advantage of the subthreshold exponential I-V relationship that closely matches bipolar modeling. It is discovered that biasing to remove drift current components and to address higher order effects such as ideality factor mismatch, threshold mismatch, body effect, and short channel effects, is important to provide a linear multiplier. It is also shown that distortion caused by device size mismatch and offset input currents can be used to cancel the distortion introduced by drift currents when designing in weak and moderate inversion. This concept allows for linear multiplier designs with larger input currents which results in dramatic improvements in bandwidth over traditional weak inversion circuits. Three multiplier circuits are simulated and fabricated in an AMIS 0.35-um process. Circuits with less than 1 % nonlinear error and distortion (THD) across 100 % dynamic input range and with bandwidths greater than 100 MHz can be built. Also, low power multiplier solutions are presented that consume less than 40 nW of dynamic power.

The Windy Ridge mega-landslide in Wayne and Sevier Counties originated in Lates tPleistocene time as established by 14C ages on basal organic-rich clay and peat sediment from bogs that developed on the slide. The contact depth between bog and landslide was estimated using high-resolution seismic reflection to find the thickest sediment. Four bogs were cored at their depocenters, and organic material at the slide contact was used for age determinations. The oldest bog sediments ages are 10,600 ± 46, 10,556 ± 34, 12,511 ± 134, and 12,886 ± 91 calibrated years BP. Ages represent two sliding events. First, at the transition from interglacial to younger Dryas glaciation, coeval with the transgression of the Gilbert stand of Lake Bonneville. Younger ages suggest a second slide at ~10,550 cal ka BP. Carbon and nitrogen stable isotopes, and pollen contain a detailed sedimentary record of climate changes since the younger Dryas Chronozone (YDC). The Windy Ridge Mega-Landslide, together with other proxies in the region, provide strong support for a wet period during the transition from late interglacial to glacial conditions at the onset of YDC. Pollen records of this time span are rare in Utah, where local climate variation is complex and illustrates the strength of using landslide bogs as paleoclimate proxies.

The aim of this thesis is to report on a transdisciplinary approach, regarding the complexity of thinking about human embodiment in relation to machine embodiment. A practical dimension of this thesis is to elicit some principles for the design and evaluation of virtual embodiment. The transdisciplinary approach suggests, firstly, that a single discipline or reality is, on its own, not sufficient to explain the complexity and dynamism of the embodied interaction between the human and machine. Secondly, the thesis argues for thinking of transdisciplinary research as a process of individuation, becoming or transduction, that is, as a process of mediation between heterogeneous approaches rather than perceiving research as a stabilized cognitive schema designed to accumulate new outcomes to the already-there reality. Arguing for going beyond the individualized approaches to embodiment, this thesis analyzes three cases where the problems that appear in one case are resolved through the analysis of the following one. Consisting of three phases, this research moves from objective scientific ¿reality¿ to more phenomenological, subjective and complex realities. The first study employs a critical review of embodied conversational agents in human¿computer interaction (HCI) in a learning context using a comparative meta-analysis. Meta-analysis was applied because most of the studies for evaluating embodiment are experimental. A learning context was selected because the number of studies is suitable for meta-analysis and the findings could be generalized to other contexts. The analysis reveals that there is no ¿persona effect¿, that is, the expected positive effect of virtual embodiment on the participant¿s affective, perceptive and cognitive measures. On the contrary, it shows the reduction of virtual embodiment to image and a lack of consideration for the participant¿s embodiment and interaction, in addition to theoretical and methodological shortcomings. The second phase solves these problems by focusing on Mark Hansen¿s phenomenological account of embodiment in new media. The investigation shows that Hansen improves on the HCI account by focusing on the participant¿s dynamic interaction with new media. Nevertheless, his views of embodied perception and affection are underpinned by a subjective patriarchal account leading to object/subject and body/work polarizations. The final phase resolves this polarization by analyzing the controversial work of Alan Turing on intelligent machinery. The research provides a different reading of the Turing Machine based on Simondon¿s concept of individuation, repositioning its materiality from the abstract non-existent to the actual-virtual realm and investigating the reasons for its abstraction. It relates the emergence of multiple human¿machine encounters in Turing¿s work to the complex counter-becoming of what it describes as ¿the Turing Machine compound¿. / Ministry of Higher Education in the Sultanate of Oman