<p>The Company Siemens Industrial Turbo Machinery AB manufactures and launches in operation among other things gas turbines, steam turbines, compressors, turn-key power plants and carries out service for components for heat and power production. Siemens also performs research and development, marketing, sales and installations of turbines and completes power plants, service and refurbish.</p><p>Our thesis for the engineering degree is to develop an automatic status log which will be used as a tool to control how the status of the machine is before and after technical service at gas turbines. Operational disturbances will be registered in a structured way in order to get a good possibility to follow up the reliability of the application.</p><p>An automatic log function has been developed and will be activated at start, stop and shutdown of the turbine system. Log files are created automatically and get a name with the event type, the date and the time. The files contain data as timestamp, name, measured values and units of the signals which are going to be analyzed by the support engineers. They can evaluate the cause of the problem using the log files.</p>

The Company Siemens Industrial Turbo Machinery AB manufactures and launches in operation among other things gas turbines, steam turbines, compressors, turn-key power plants and carries out service for components for heat and power production. Siemens also performs research and development, marketing, sales and installations of turbines and completes power plants, service and refurbish. Our thesis for the engineering degree is to develop an automatic status log which will be used as a tool to control how the status of the machine is before and after technical service at gas turbines. Operational disturbances will be registered in a structured way in order to get a good possibility to follow up the reliability of the application. An automatic log function has been developed and will be activated at start, stop and shutdown of the turbine system. Log files are created automatically and get a name with the event type, the date and the time. The files contain data as timestamp, name, measured values and units of the signals which are going to be analyzed by the support engineers. They can evaluate the cause of the problem using the log files.

Submitted by João Arthur Martins (joao.arthur@ufpe.br) on 2015-03-10T19:26:33Z No. of bitstreams: 2 Dissertaçao Ivanildo Monteiro de Azevedo.pdf: 2975716 bytes, checksum: 0f64e99c5ed9ce58ca3f9f85c1ff90b7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Approved for entry into archive by Daniella Sodre (daniella.sodre@ufpe.br) on 2015-03-10T19:43:45Z (GMT) No. of bitstreams: 2 Dissertaçao Ivanildo Monteiro de Azevedo.pdf: 2975716 bytes, checksum: 0f64e99c5ed9ce58ca3f9f85c1ff90b7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) / Made available in DSpace on 2015-03-10T19:43:45Z (GMT). No. of bitstreams: 2 Dissertaçao Ivanildo Monteiro de Azevedo.pdf: 2975716 bytes, checksum: 0f64e99c5ed9ce58ca3f9f85c1ff90b7 (MD5) license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Previous issue date: 2013-09-06 / Nas últimas décadas é crescente a importância que se tem dado ao estudo do construto coesão de equipes, dada sua reconhecida influência nos fatores comportamentais e nos processos de equipes de trabalho em diversas áreas (e.g., manutenção, efetividade, desempenho, rotatividade voluntária, entre outras). Deste modo, revela-se a necessidade de investigação do quão confiáveis e válidos são os instrumentos utilizados para mensurar este construto, em especial instrumentos que possam ser aplicados na área de Engenharia de Software, tendo em vista que o assunto tem recebido pouca atenção no contexto de equipes de desenvolvimento de software. Objetivo: Este trabalho tem como objetivo realizar uma avaliação das propriedades psicométricas dos instrumentos: Perceived Cohesion Scale (PCS) e o Group Environment Questionnaire (GEQ), sendo analisada a confiabilidade e a validade de construto destas escalas, além da análise do índice de acordo entre os membros destas equipes, para ambas as métricas. Método: Para o desenvolvimento deste estudo, primeiramente foi realizada uma pesquisa bibliográfica buscando identificar as principais escalas utilizadas para mensurar a coesão de equipes. Em seguida, realizou-se um levantamento, utilizando a Pesquisa de Campo (ou survey) como método de pesquisa, que envolveu 84 profissionais, referentes a 19 equipes de desenvolvimento de software, provenientes de 4 coletas de dados em 3 empresas distintas, localizadas no Brasil (duas empresas) e no Canadá (uma empresa). A partir dos dados coletados foram realizados testes estatísticos que possibilitaram avaliar as propriedades psicométricas das escalas através da análise da confiabilidade e validade de construto, além de fornecer uma visão sobre o grau de concordância das respostas dos membros das equipes, entre si. Resultados: Os resultados apontaram que ambas as escalas (PCS e GEQ) possuem alta confiabilidade. O GEQ apresentou ter validade de construto, tendo em vista que revelou possuir validade convergente e discriminante, no entanto o PCS não passou por tal avaliação, em virtude da ausência de dados para confrontar tais validades. Para o instrumento PCS, o índice de concordância revelou forte acordo entre os membros das equipes, em ambas as dimensões. A escala GEQ, por sua vez, apresentou forte concordância para ambas as dimensões agrupadas (AI e IG), no entanto quanto às dimensões segmentadas, tal hipótese só pôde ser confirmada para uma delas: IG-T. Nas últimas décadas é crescente a importância que se tem dado ao estudo do construto coesão de equipes, dada sua reconhecida influência nos fatores comportamentais e nos processos de equipes de trabalho em diversas áreas (e.g., manutenção, efetividade, desempenho, rotatividade voluntária, entre outras). Deste modo, revela-se a necessidade de investigação do quão confiáveis e válidos são os instrumentos utilizados para mensurar este construto, em especial instrumentos que possam ser aplicados na área de Engenharia de Software, tendo em vista que o assunto tem recebido pouca atenção no contexto de equipes de desenvolvimento de software. Objetivo: Este trabalho tem como objetivo realizar uma avaliação das propriedades psicométricas dos instrumentos: Perceived Cohesion Scale (PCS) e o Group Environment Questionnaire (GEQ), sendo analisada a confiabilidade e a validade de construto destas escalas, além da análise do índice de acordo entre os membros destas equipes, para ambas as métricas. Método: Para o desenvolvimento deste estudo, primeiramente foi realizada uma pesquisa bibliográfica buscando identificar as principais escalas utilizadas para mensurar a coesão de equipes. Em seguida, realizou-se um levantamento, utilizando a Pesquisa de Campo (ou survey) como método de pesquisa, que envolveu 84 profissionais, referentes a 19 equipes de desenvolvimento de software, provenientes de 4 coletas de dados em 3 empresas distintas, localizadas no Brasil (duas empresas) e no Canadá (uma empresa). A partir dos dados coletados foram realizados testes estatísticos que possibilitaram avaliar as propriedades psicométricas das escalas através da análise da confiabilidade e validade de construto, além de fornecer uma visão sobre o grau de concordância das respostas dos membros das equipes, entre si. Resultados: Os resultados apontaram que ambas as escalas (PCS e GEQ) possuem alta confiabilidade. O GEQ apresentou ter validade de construto, tendo em vista que revelou possuir validade convergente e discriminante, no entanto o PCS não passou por tal avaliação, em virtude da ausência de dados para confrontar tais validades. Para o instrumento PCS, o índice de concordância revelou forte acordo entre os membros das equipes, em ambas as dimensões. A escala GEQ, por sua vez, apresentou forte concordância para ambas as dimensões agrupadas (AI e IG), no entanto quanto às dimensões segmentadas, tal hipótese só pôde ser confirmada para uma delas: IG-T. Conclusões: Através das análises estatísticas identificou-se a necessidade de uma avaliação mais profunda em alguns dos itens das escalas (AIT2, AIS3, SM3), por terem se mostrado problemáticos. Contudo, ainda assim considera-se que ambas as escalas tenham apresentado resultados satisfatórios para os testes em que foram submetidas, de modo a serem consideradas escalas confiáveis e, no caso do GEQ, com resultados válidos.

No description available.

One of the major driving elements behind the explosive boom in wireless revolution is the advances in the field of modulation which plays a fundamental role in any communication system, and especially in cellular radio systems. Hence, the elaborate choice of an efficient modulation scheme is of paramount importance in the design and employment of any communications system. Work presented in this thesis is an investigation (study) of the feasibility of whether multilevel FSK modulation scheme would provide a viable alternative modem that can be employed in TDMA cordless communications systems. In the thesis the design and performance analysis of a non-coherent multi-level modem that offers a great deal of bandwidth efficiency and hardware simplicity is studied in detail. Simulation results demonstrate that 2RC pre-modulation filter pulse shaping with a modulation index of 0.3, and pre-detection filter normalized equivalent noise bandwidth of 1.5 are optimum system parameter values. Results reported in chapter 5 signify that an adjacent channel rejection factor of around 40 dB has been achieved at channel spacing of 1.5 times the symbol rate while the DECT system standards stipulated a much lower rejection limit criterion (25-30dB), implying that CP-QFSK modulation out-performs the conventional GMSK as it causes significantly less ACI, thus it is more spectrally efficient in a multi-channel system. However, measured system performance in terms of BER indicates that this system does not coexist well with other interferers as at delay spreads between 100ns to 200ns, which are commonly encountered in such indoor environment, a severe degradation in system performance apparently caused by multi-path fading has been noticed, and there exists a noise floor of about 40 dB, i.e. high irreducible error rate of less than 5.10-3. Implementing MRC diversity combiner and BCH codec has brought in a good gain.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

Ce travail porte sur la fabrication des structures photoniques (SPs) à base de polymères etleurs applications en optique non-linéaire. Dans la première partie, nous avons démontré lafabrication des SPs souhaitées par la méthode d’interférence. En particulier, l’interférencede deux faisceaux laser avec une exposition multiple est démontrée théoriquement etexpérimentalement comme un meilleur choix pour la fabrication des structures souhaitées,qui sont uniformes et de grande taille. Diverses structures à 1D, 2D, et 3D, périodiques etquasi-périodiques sont fabriquées avec succès dans la résine SU8. Nous avons égalementdémontré un moyen pour surmonter l’effet d’absorption de la photorésine, qui impose unelimitation de l’épaisseur des structures, en ajoutant un faisceau laser uniforme en sensopposé par rapport à deux faisceaux d’interférence. Les SPs fabriquées deviennent plusuniformes et leur épaisseur augmente jusqu’à 25 μm. Une autre approche utilisant laméthode d’absorption ultra-faible à un photon a également été mise en oevre montrant lapossibilité d’obtenir des SPs avec une épaisseur jusqu’à 600 μm. De plus, en utilisant latechnique d’interférence et l’effet de transport de masse, nous avons également démontré lafabrication des structures à relief de surface (SRG), avec une profondeur contrôlable, dansdes polymères passives (SU8) et des polymères actives (DR1/PMMA). Dans la deuxièmepartie, nous avons utilisé ces structures pour l’amélioration de la génération de secondeharmonique des matériaux polymères par deux manières différentes: quasi-accord de phase(QPM) et mode de résonance de guide d’onde (WRG). Les structures de QPM permet desurmonter le déphasage entre les ondes fondamentale et harmonique, et par conséquenceaugmente le rendement du taux de conversion. En outre, les structures de guide d’ondeavec une surface modulée (WRG) ont également été démontrées comme une excellenteméthode permettant d’amplifier le signal de SHG par un facteur de 25. / This dissertation deals with the fabrication of various polymer-based photonic structures(PSs) and their applications in nonlinear optics. In the first part, we have demonstratedthe fabrication of desired PSs by interference lithography technique. The two-beam interferencemethod is theoretically and experimentally demonstrated as a best choice forfabrication of all kinds of PSs with large and uniform area. Desired 1D, 2D, and 3D,periodic and quasi-periodic PSs are successfully fabricated on SU8 photoresist. We alsodemonstrated a way to overcome the material’s absorption effect, which imposes a limitationof PSs thickness. By adding one more exposure of a uniform laser beam in oppositedirection of two interfering beams, the fabricated PSs became more uniform and theirthickness increased to 25 μm. A tentative of using low one-photon absorption techniquewas also realized showing the possibility to obtain a PS with a thickness upto 600 μm.Furthermore, by using the interference technique combined with mass transport effect,we have demonstrated the fabrication of desired surface relief grating structures, with acontrollable depth, on passive polymer (SU8) and active polymer (DR1/PMMA). In thesecond part, we applied these fabricated structures for enhancement of nonlinearity ofpolymer materials by two different ways: quasi-phase-matching (QPM) and waveguideresonance grating (WRG). Both theoretical calculation and experimental realization ofthese techniques have been investigated. The QPM structures allowed to overcome thephase mismatch of fundamental and harmonic waves, thus increasing the conversion efficiency.The second-harmonic generation (SHG), one of the most important applicationsof frequency conversion, is significantly enhanced thanks to the QPM condition. Anothermethod basing on the WRG structures allowed to increase the intensity of fundamentalwave, thus enhancing the SHG signal by a factor of 25.

Class of 2013 Abstract / Specific Aims: To assess influence of PCS and FPQ-III on pain tolerance as well as SNPs TRPA1(rs11988795), COMT (rs4646312, rs6269) and FAAH(rs 932816, rs4141964, rs2295633). Methods: A Pain Catastrophizing Scale (PCS) and Fear of Pain Questionnaire (FPQ-III) were completed by a total of 89 healthy adults. A genetic analysis from cheek swabs was performed for single nucleotide polymorphisms(SNPs) within genes: TRPA1, COMT, and FAAH. A cold-pressor test involving the non-dominant hand inserted in circulating water kept at 1-3 degrees Celsius was used and the duration of time subjects were able to leave their hand in the water (pain tolerance) was measured as the primary outcome. Linear regression analysis was used to identify predictors of pain tolerance. Main Results: The subjects were 58% female, the majority were Caucasian (51%) with 26% Asian, 14% Hispanic and 9% other. The mean pain tolerance was 121 ± 66 seconds and regression analysis showed female sex (p=0.001), Asian race (p=0.001), PCS score (<0.001) and FPQ-III score (p=0.014) were associated with decreased pain tolerance while the SNPs were not.      Conclusion: Psychological factors and patient demographics are associated with pain tolerance but the single nucleotide polymorphisms evaluated were not. Future pain studies should utilize a psychological assessment to adjust for this as a confounder.

Le contexte de cette thèse est à l’intersection des contextes des grilles de calculs, des nouvelles technologies du Web ainsi que des Clouds et des services à la demande. Depuis leur avènement au cours des années 90, les plates-formes distribuées, plus précisément les systèmes de grilles de calcul (Grid Computing), n’ont pas cessé d’évoluer permettant ainsi de susciter multiple efforts de recherche. Les grilles de PCs ont été proposées comme une alternative aux super-calculateurs par la fédération des milliers d’ordinateurs de bureau. Les détails de la mise en oeuvre d’une telle architecture de grille, en termes de mécanismes de mutualisation des ressources, restent très difficile à cerner. Parallèlement, le Web a complètement modifié notre façon d’accéder à l’information. Le Web est maintenant une composante essentielle de notre quotidien. Les équipements ont, à leur tour, évolué d’ordinateurs de bureau ou ordinateurs portables aux tablettes, lecteurs multimédias, consoles de jeux, smartphones, ou NetPCs. Cette évolution exige d’adapter et de repenser les applications/intergiciels de grille de PCs qui ont été développés ces dernières années. Notre contribution se résume dans la réalisation d’un intergiciel de grille de PCs que nous avons appelé RedisDG. Dans son fonctionnement, RedisDG reste similaire à la plupart des intergiciels de grilles de calcul, c’est-à-dire qu’il est capable d’exécuter des applications sous forme de «sacs de tâches» dans un environnement distribué, assurer le monitoring des noeuds, valider et certifier les résultats. L’innovation de RedisDG, réside dans l’intégration de la modélisation et la vérification formelles dans sa phase de conception, ce qui est non conventionnel mais très pertinent dans notre domaine. Notre approche consiste à repenser les grilles de PCs à partir d’une réflexion et d’un cadre formel permettant de les développer, de manière rigoureuse et de mieux maîtriser les évolutions technologiques à venir. / The context of this work is at the intersection of grid computing, the new Web technologies and the Clouds and services on demand contexts. Desktop Grid have been proposed as an alternative to supercomputers by the federation of thousands of desktops. The details of the implementation of such an architecture, in terms of resource sharing mechanisms, remain very hard. Meanwhile, the Web has completely changed the way we access information. The equipment, in turn, have evolved from desktops or laptops to tablets, smartphones or NetPCs. Our approach is to rethink Desktop Grids from a reflexion and a formal framework to develop them rigorously and better control future technological developments. We have reconsidered the interactions between the traditional components of a Desktop Grid based on the Web technology, and given birth to RedisDG, a new Desktop Grid middelware capable to operate on small devices, ie smartphones, tablets like the more traditional devicves (PCs). Our system is entirely based on the publish-subscribe paradigm. RedisDG is developped with Python and uses Redis as advanced key-value cache and store.

Augmentative and alternative communication (AAC) provides many individuals who have little or no functional speech with a means to enter the world of communication. Aided and/or unaided symbols are used as a means of reception and expression to create shared meaning. The selection of an appropriate symbol set/system is vital and iconicity plays a central role in this process. The Western-based symbol set, Picture Communication Symbols (PCS) (Johnson, 1981), is readily available and widely used in South Africa, despite little information existing on its iconicity to South African populations with disabilities. This study aimed to determine the iconicity of Picture Communication Symbols (PCS) for children with English Additional Language (EAL) and intellectual disability. A quantitative, non-experimental, descriptive design was used. Thirty participants between the ages of 12;00 and 15;11 (years; months) with EAL and intellectual disability were required to identify 16 PCS presented thematically on a ‘bed-making’ communication overlay in response to a gloss read out by the researcher. The results indicated that, overall, the 16 PCS were relatively iconic to the participants. The results also indicated that the iconicity of PCS can be manipulated and enhanced and that it can be influenced by other PCS that are used simultaneously on the communication overlay. The reasons for these findings are described. The clinical and theoretical implications of this study’s results are discussed, followed by a critical evaluation of this study and, finally, recommendations for future research are suggested. / Dissertation (Master of Arts)--University of Pretoria, 2012. / Centre for Augmentative and Alternative Communication (CAAC) / unrestricted