ABSTRACT In this study, the properties of the high impedance surface structure are studied. We proceed to design the low profile and miniature high impedance surface structure. In order to conform to the IC chips of RFID and reduce the influence of metal objects, we add a layer of electromagnetic band-gap (EBG) structure on the back of the antenna. The EBG behaves as a high impedance surface, similar to a perfect magnetic conductor. This property of the EBG structure is able to isolate the antenna and backside environment and reduce the metallic effect. In order to achieve the requirements of small size and low cost on RFID tag antenna, we design the miniature, low profile and low cost high impedance surface structure. In this study, we use the slots and chip capacitance to miniaturize the dimension. Both approaches can reduce the influence of metallic objects. Although using slots can reduce the metallic effect, it does not have the advantage of low profile. Using chip capacitor can miniaturize the dimension and reduce metallic effect effectively. It also has advantages of low profile, low cost and low sensitivity to the frequency of the tag antenna. Finally, the high impedance surface structures are fabricated and measured when they combine with the tag antenna attached to the metallic object. The measured results agree with simulated ones well.

The study investigates the constructed relationship between gender, language, and power in a type of conventional, informal discussion, commonly referred to as adda in Bengal. This research focuses on everyday contestations of authority and some ways that are differently framed by men and women, and as well as some implications of these strategies as they negotiate and position themselves within the setting of adda in Austin, Texas, a place away from Bengal. The corpus consists of a segment of recorded data within mixed-group interaction, including both men and women, among native Bengalis who are currently from Texas as well as from Bengal. I use conversation analysis as a methodology to analyze the sequential production of meaning, and study how participant roles emerge and are negotiated through the lens of an adda setting. The study investigates the transformation of a discussion between men and women into a format of debate, which is common in adda, and the strategies employed by the participants to seize the floor. The strategies analyzed include: collaboration between women to disagree with the male participants’ positions and vice-versa. Questioning as a practice can be a very powerful device within the situated space, as it demands a response from the recipient. The study builds on the recent scholarship on the multifunctional use of tag questions and contributes by adding a new perspective on how the tag-questions are employed by women as an interactional strategy to become co-tellers in the discussion. From the very outset, the study focuses on the use of tag-questions and how they are implemented in an interactional framework (by either men or women). The broader aim of this report is to use tag-question as a primary data set because of their complexity. The act of questioning is a very complex activity as it involves the context and positioning of the speaker as well as the recipient and how they both act and react to the question. In the segment analyzed in the report, women use tag question to question the men’s authority claims, but the questions are interpreted by men as a re-framing to a teacher-student paradigm, and undermine the women’s position. The female participants also create interruptions to redirect and reformulate the topic, in order to become co-tellers in the discussion. In exploring these strategies, I examine both the embodied behavior and the speech styles of both men and women. / text

Free2Move AB is developing products for the market within wireless communication and identification, among those active RFID-tags. The company had an idea about providing one of their active RFID tags with a GPS receiver and transmit positions via an existing RFID protocol. Desire from the company was also the possibility to log positions and measure temperature. The finished prototype should also be able to be activated by movement. The company had proposal about components that were to be used in the project. A large part of the work was to understand how these worked and how to combine them to fulfill the requirements established in agreement with supervisor at Free2Move. A PIC microcontroller was used in the design of the prototype and software implemented for communication with GPS, RFID tag and other components. The result was a working prototype where an existing RFID tag was integrated in the same printed circuit board layout as the GPS receiver and other components that were used in the project.

No description available.

This thesis looks at the problem of optimally placing binary directional proximity markers to assist a robot as it navigates waypoints through an environment. A simple planar fiducial marker is developed to serve as the binary directional proximity marker. A scoring function is proposed for marker placement as well as a method for random generation of hallway maps. Several common metaheuristic algorithms are run to find optimal marker placements with respect to the scoring function for a number of randomly generated hallway maps. From these results, placements are then evaluated by physical experimentation on an iRobot Create equipped with relatively inexpensive webcams. / Graduate

Acyl-CoA:diacylglycerol acyltransferase (EC 2.3.1.20, DGAT or DAGAT) is a membrane protein found mainly in the endoplasmic reticulum (ER). It catalyzes the final step in the biosynthesis of triacylglyerol (TAG or TG), which is the principal repository of fatty acids for energy utilization and membrane formation. Several lines of evidence have indicated that DGAT has a substantial effect on carbon flux into TAG. DGAT has at least two discrete family members (DGAT1 and DGAT2) with different physiological roles. High-resolution structures of both DGATs, however, are absent due to difficulties in purification. In order to gain insight into structural and functional relationships of DGATs, a functional DGAT2 protein from the yeast Saccharomyces cerevisiae (ScDGAT2, also known as Dgalp) was selected. The structural and functional role of cysteine residues in ScDGAT2 was studied using site-directed mutagenesis (SDM) in combination with chemical modification. Although ScDGAT2 is susceptible to thiol-modifying reagents, none of the cysteines are essential for the catalytic activity or involved in structure support though disulfide linkages. Inhibition of DGAT activity by thiol-specific modification was localized to cysteine314, which is in the proximity of a highly conserved motif in DGAT2s. Thus, cysteine314 may reside in a crucial position near a possible active site or related to proper protein folding. The functional importance and topological orientation of signature motifs in ScDGAT2 were also studied using the same methods. Both the N- and C-termini of ScDGAT2 are oriented toward the cytosol. A highly conserved motif, 129YFP131, and a hydrophilic segment exclusive to ScDGAT2, reside in the ER and play essential roles in enzyme catalysis. In addition, the strongly conserved H195, which may be part of the active site of DGAT2, is likely embedded in the membrane. Although ScDGAT2 has a topology similar to that of murine DGAT2, there are striking differences which suggest that the topological organization of DGAT2 is not ubiquitously conserved. / Plant Science

abstract: Although there are many forms of organization on the Web, one of the most prominent ways to organize web content and websites are tags. Tags are keywords or terms that are assigned to a specific piece of content in order to help users understand the common relationships between pieces of content. Tags can either be assigned by an algorithm, the author, or the community. These tags can also be organized into tag clouds, which are visual representations of the structure and organization contained implicitly within these tags. Importantly, little is known on how we use these different tagging structures to understand the content and structure of a given site. This project examines 2 different characteristics of tagging structures: font size and spatial orientation. In order to examine how these different characteristics might interact with individual differences in attentional control, a measure of working memory capacity (WMC) was included. The results showed that spatial relationships affect how well users understand the structure of a website. WMC was not shown to have any significant effect; neither was varying the font size. These results should better inform how tags and tag clouds are used on the Web, and also provide an estimation of what properties to include when designing and implementing a tag cloud on a website. / Dissertation/Thesis / M.S. Applied Psychology 2011

El presente informe final de tesis muestra el diseño de un sistema de control de asistencia en la agencia mercado de la Caja Huancayo aplicando Tarjetas de proximidad de Tecnología RFID específicamente para mejorar el control de los registros de asistencia del personal de la Caja Huancayo con la finalidad de agilizar este proceso que actualmente se conlleva con malas prácticas de los colaboradores.

Made available in DSpace on 2016-08-29T15:08:59Z (GMT). No. of bitstreams: 1 tese_8929_DISSERTAÇÃO DE MARCOS ANTÔNIO CRUZ DE ARAUJO20160318-82841.pdf: 9176705 bytes, checksum: da9b4bd45f66ee0a7ae3943b8cd4d873 (MD5) Previous issue date: 2015-07-10 / Nesta pesquisa, buscamos explorar o grafite em sua discursividade e historicidade por meio do gênero discursivo tag, uma espécie de assinatura estilizada, tecendo uma análise de discurso sobre os enunciados concretos recolhidos como corpus na Grande Vitória-ES. Isso foi procedido com a finalidade de compreender como a sociedade brasileira constituiu o dualismo grafite/ pichação em sua Formação Discursiva. Serviram-nos de suporte teórico conceitos chave da Análise de Discurso (AD), como ideologia, sujeito, história e memória discursiva sempre em diálogo com a Linguística Aplicada (LA), em especial os estudos acerca do letramento, bem como a análise comparativa do par ocupação/ invasão. O cotejo da tag com os conceitos mencionados, ocorrido em concomitância com a pesquisa de campo (entrevistas e coleta de material textual do grafite capixaba), nos permitiu perceber como uma análise discursiva contrasta com o senso comum em torno do dualismo grafite/ pichação o qual materializa, no plano enunciativo, um conflito existente no plano ideológico. Na medida em que formulamos análises de um ponto de vista histórico e discursivo sobre o assunto, expusemos a perspectiva de movimentos sociais que praticam o grafite-tagging discordando da oposição entre esses dois termos. Palavras-chave: Grafite, Pichação, Tag, Discurso, Ideologia, História.

Submitted by Chaylane Marques (chaylane.marques@ufpe.br) on 2015-03-12T19:50:41Z No. of bitstreams: 2 JoaoPacificoBezerraNeto_Dissertação_Mestrado_PPGG2012.pdf: 5337016 bytes, checksum: dd95563c1fc978c7a83bb7ff2526ef28 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-12T19:50:41Z (GMT). No. of bitstreams: 2 JoaoPacificoBezerraNeto_Dissertação_Mestrado_PPGG2012.pdf: 5337016 bytes, checksum: dd95563c1fc978c7a83bb7ff2526ef28 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2012 / CAPES; CNPQ; FACEPE; BNB; FINEP / O feijão-caupi é uma das mais antigas leguminosas cultivadas, com destacada importância em áreas tropicais e subtropicais. No Brasil, é uma das principais fontes de nutrientes para a dieta humana e animal, representando 80% da produção de grãos nas regiões norte e nordeste. Entretanto, fatores como seca e salinidade (as duas principais adversidades ambientais em regiões semiáridas) têm prejudicado tanto a quantidade quanto a qualidade da produção do feijão-caupi. Neste sentido, o estudo de proteínas que agem como facilitadoras da passagem de água entre as membranas biológicas e na prevenção da passagem de íons e outros solutos na célula é fundamental para o entendimento de como algumas plantas respondem a tais adversidades. Entre estas proteínas as aquaporinas merecem atenção, tratandose de uma família de pequenas proteínas transmembranas (24-30 kDa), dividida em quatro subfamílias, incluindo as Proteínas de Membrana Plasmática (PIP), Proteínas de Membrana de Tonoplasto (TIP), Proteínas de Membrana de Nódulos (NIP) e Pequenas Proteínas Básicas Intrínsecas de Membrana (SIP). Apesar da grande quantidade de dados sobre aquaporinas nos vegetais, nada se sabe sobre estes transportadores em algumas culturas de importância econômica, como o feijãocaupi. Utilizando dados de EST (Expressed Sequence Tags), 37 transcritos candidatos a aquaporinas foram identificados em feijão-caupi por meio de buscas com ferramentas de bioinformática, onde 27 apresentavam o domínio íntegro e 10 encontravam-se incompletas. Análises fenéticas das sequências de aminoácidos dividiram esta família nas quatro subfamílias já conhecidas para outras espécies vegetais, sendo 11 PIPs (cinco PIP1 e seis PIP2), 10 TIPs (quatro TIP3 e seis TIP), quatro NIPs e duas SIPs. Os alinhamentos múltiplos gerados a partir das sequências com domínio MIP completo, indicaram que as regiões ar/R das aquaporinas do feijão-caupi, em sua maioria, são similares às presentes em Arabidopsis, milho e arroz, apontando para afinidades com o mesmo tipo de soluto transportado. A expressão dos transcritos foi observada em todos os tecidos vegetais, estando associadas ao transporte de diferentes tipos de solutos nos compartimentos celulares. As aquaporinas identificadas neste estudo representam um importante recurso genético, fornecendo alvos em potencial para modificar as propriedades do uso de água em feijão-caupi ou em outras leguminosas relacionadas.