Dissertations / Theses on the topic 'Telespazio S.p.A'
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Deppermann, Thomas. "Resonanzstruktur des Zerfalls D±s-]p+p-p± [D s pi pi pi]." [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965231968.
Full textPecka, Daniel. "Ocenění P+P, spol. s r.o." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-205604.
Full textGötzen, Klaus. "Untersuchung des Zerfalls D+-s-]K+K-p+p-p+- [D s K K pi pi pi]." [S.l. : s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=969509898.
Full textLarsen, Jeffrey A. "AVO analysis by simultaneous P-P and P-S weighted stacking." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape4/PQDD_0021/MQ49632.pdf.
Full textShi, Weifeng. "Syntheses and Structures of new P/S and P/Se Metal Complexes - Synthese und Strukturaufklärung neuer P/S- und P/Se-Metallkomplexe." [S.l. : s.n.], 2007. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000006085.
Full textAnderson, William B. "The P-3 Scheduling Support System (P-3 S)/." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23085.
Full textLi, Rosamaria Wu Chia. "Novos poli(p-xilileno)s e poli(p-fenileno vinileno)s obtidos via quinodimetanos gerados catodicamente." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/46/46135/tde-27082018-103220/.
Full textThe synthesis via Suzuki coupling reaction of 11 new biphenylenic and terphenylenic polymer precursors, substituted by long-chain electron donating or withdrawing groups, is described. The electrochemical reduction of these precursors led to the corresponding poly(p-xylylene)s and poly(p-phenylene vinylene)s. Ten out of the 11 generated polymers have been never described before. AII the polymers were fully characterised by spectroscopic (UV-VIS, IR, NMR) and thermal analyses, as well as by SEC and electrical conductivity measurements of iodine-doped specimens. The positive charge carrier mobility and the barrier height for electron injection (metal/polymer) could be determined through I x V investigations of sandwich devices (metal/polymer/metal) for one of the polymers.
Gomes, Marcelo Carvalho. "Microbiota vaginal de cabras nas fases do proestro, p?s c?pula e p?s-parto." Universidade Federal Rural do Rio de Janeiro, 2006. https://tede.ufrrj.br/jspui/handle/tede/856.
Full textThe present work was carried out in three different goat raisings and 27 females and 2 males were selected for identifying the present microbiota in the preputial and vaginal cavity of goats under three estrous cycle phases: In Februrary, 2005 in the pro-estrum, in May, 2005 in the post-copula and in October, 2005 in the post-partum. The samples were collected by swabs as well as vaginal and preputial washings for studying microbiota and by gynecological brushes for the females esfoliative cytological study. The two greatest bacteria genera prevalence were: Micrococcus spp (89,65 %) following by Bacillus spp. (29,90 %). Filamentous fungi as Cladosporium spp. (26,39 %) and Aspergillus spp. (11,46 %) were the most isolated. On the bacteria cytological test about 76 % of the investigations have been in accordance with the microscopic finding and bacteria isolation. In 89% appraised animal some yeasts presence on sheets was observed in spite of there was isolation just in 7,4 % of the animals. There was similarity between hifas observation and filamentous fungi isolation, in regarding to 53 % of hifas presence investigations. The bacterial and fungical microbiota found on this survey showed the goats vaginal and preputial microbiota diversity and pointed out to the fact that it might be carried during copulation. The number of isolated bacteria species in the post-copulation phase was upper, as well as for yeasts. The vaginal cytology performed significative association in relation to the bacterial isolation, observed by cocos and bacilli presence on the sheets with positive growth. Bacteria potentially pathogenic as Pseudomonas alcalinigenes, P. aeruginosa, and Corynebacterium spp. as well as opportunist fungi as Aspergillus flavus in healthy goats vaginal cavity were found.
O presente trabalho foi desenvolvido em tr?s criat?rios caprinos distintos, de onde tomamos 27 f?meas e 2 machos a fim de identificar a microbiota presente no prep?cio de bodes e na cavidade vaginal de cabras em tr?s fases do ciclo estral: fevereiro de 2005 no proestro, maio de 2005 ap?s a c?pula e outubro de 2005 ap?s o parto. As amostras foram coletadas atrav?s de swab, lavado vaginal e prepucial para o estudo da microbiota e com escovas ginecol?gicas para o estudo colpocitol?gico das f?meas. Os dois g?neros de bact?rias de maior preval?ncia foram os seguintes: Micrococcus spp. (89,65 %) e Bacillus spp. (29,90 %). Os dois g?neros de fungos de maior preval?ncia foram Cladosporium spp. (26,39 %) e Aspergillus spp. (11,46 %). No estudo colpocitol?gico para bact?rias, em 76 % das investiga??es houve concord?ncia entre os achados microsc?picos e isolamento bacteriano. Em 89 % dos animais avaliados foi observada a presen?a de leveduras nas l?minas, mas houve isolamento em apenas 7,4 % dos animais. Em 53 % das investiga??es da presen?a de hifas houve concord?ncia entre a observa??o de hifas e o isolamento de fungos filamentosos. A microbiota f?ngica e bacteriana encontrada no presente trabalho evidenciou a diversidade da microbiota vaginal e prepucial de caprinos e aponta para o fato de que podem ser carreados durante a c?pula. Observou-se que o n?mero de esp?cies isoladas de bact?rias ? superior na fase de p?s-c?pula enquanto que em fungos observamos este aumento no p?s-parto; O resultado da citologia vaginal teve correla??o com o isolamento bacteriano, observada pela presen?a de cocos e bacilos nas l?minas com crescimento bacteriano positivo; Bact?rias potencialmente patog?nicas como Pseudomonas alcaligenes, P. aeruginosa e Corynebacterium spp. foram encontrados na cavidade vaginal de cabras h?gidas, assim como fungos oportunistas como Aspergillus flavus.
Larson, Glenn Allen. "Acquisition, processing, and interpretation of P-P and P-S 3-D seismic data." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20834.pdf.
Full textFaria, M?nica Lima de. "Comunica??o p?s-moderna nas imagens dos mang?s." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2007. http://tede2.pucrs.br/tede2/handle/tede/4557.
Full textNa presente pesquisa foi estudado o mang? como um meio de comunica??o, evidenciando suas caracter?sticas modernas e p?s-modernas atrav?s de suas imagens. As imagens dos mang?s hist?rias em quadrinhos japonesas foram analisadas a partir das perspectivas moderna e p?s-moderna, passando por sua defini??o e hist?ria para a efetiva an?lise de suas formas simb?licas, nelas encontrando, caracter?sticas plurais e h?bridas, comuns ? condi??o p?s-moderna, bem como valores claros entre bem e mal, como aqueles presentes na modernidade. Neste contexto, buscaram-se refer?ncias que entendam e valorizem o mang? como meio de comunica??o e gerador de novas possibilidades de reflex?es e conhecimentos visuais. Trata-se de um estudo qualitativo e descritivo, que se baseia numa metodologia de interpreta??o hermen?utica sugerida por Thompson (1995). Al?m da revis?o te?rico-bibliogr?fica, este trabalho apresenta a an?lise de depoimentos de leitores de mang? para um melhor entendimento do motivo de consumo deste no Brasil. Os depoimentos foram coletados sob a forma de entrevista despadronizada em profundidade, conforme indicada para a pesquisa qualitativa por Bardin (1977). As entrevistas ocorreram individualmente, e foram analisadas com o enfoque da hermen?utica de profundidade, de acordo com Thompson (1995). O conjunto de entrevistados constituiu-se de sete sujeitos, sendo tr?s estudantes universit?rios, uma estudante com Ensino M?dio completo e tr?s estudantes de Ensino M?dio. Todos os entrevistados encontravam-se na faixa et?ria entre 15 e 25 anos. A an?lise dos dados coletados evidenciou que o mang? ? capaz de comunicar, mesmo sendo produto de uma cultura oriental notoriamente diferente da ocidental na qual vivemos. O trabalho evidencia tamb?m, que os mang?s cont?m caracter?sticas tanto modernas quanto p?s-modernas, sendo assim duvidoso afirm?-lo como moderno ou p?s-moderno.
Redon, Dominique. "Représentations sociales et identités professionnelles des enseignants de l'E. P. S. En S. E. G. P. A." Lyon 1, 2001. http://www.theses.fr/2001LYO10271.
Full textCho, Sung Hoon. "Two essays on the price linkage between S & P stocks and non-S & P stocks /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1272457499.
Full textCarcuz, Jerez Juan Ramon de Jesus. "An AVO method toward direct detection of lithologies combining P-P and P-S reflection data." Texas A&M University, 2003. http://hdl.handle.net/1969/38.
Full textAwad, Cherit Alejandro, Vicent George Gregory Lambeth, and Saavedra Manuel Antonio Pérez. "Ensayos acerca del contrato P. S. Atiyah." Tesis, Universidad de Chile, 2011. http://www.repositorio.uchile.cl/handle/2250/111834.
Full textNo autorizado por el autor para ser publicada a texto completo en portal tesis electrónicas de la Universidad de Chile
Esta compilación de ensayos reúne la mayoría de mis escritos sobre derecho y teoría contractual que han sido publicados en revistas académicas a lo largo de un período de casi 20 años. Reunir estas piezas me ha permitido ver muchas relaciones que antes se me habían escapado e incluso si hoy tengo menos seguridad de algunas de las respuestas que antes, tengo (creo) mayores certezas acerca de la naturaleza de algunas de las preguntas fundamentales. Todos los ensayos han sido actualizados y revisados, algunos muy sustancialmente, y existen varias secciones completamente nuevas.
Bacarji, Arlene Denise. "A igreja e a p?s-modernidade." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2009. http://tede2.pucrs.br/tede2/handle/tede/5818.
Full textEste trabalho se prop?e a fazer uma demonstra??o gen?rica da influ?ncia da cultura p?s-moderna na Igreja enquanto institui??o s?lida, sacramental, de Tradi??o coletiva. Mostra que o homem da p?s-modernidade se contrap?e a tr?s dos aspectos essenciais do que ? Igreja, pois este ?: relativista, subjetivista e individualista, al?m de voltado para si mesmo. Tal cultura exerce uma influ?ncia na Igreja por meio da consci?ncia de seus membros que ? formada por aquela numa rela??o dial?tica. Sendo assim a consci?ncia dos membros, - subjetivista, individualista e narc?sica, - causam dano ? Institui??o por quebrarem sua plausibilidade perante o povo e perante os pr?prios membros. A falta de plausibilidade causa perda da coes?o e da legitima??o. Esse ? o motivo da crise da Igreja Cat?lica Romana. A solu??o est? na forma??o, em que pode haver uma retifica??o da consci?ncia e da raz?o, que foi deformada pela modernidade e p?s-modernidade.
Kortusová, Daniela. "Finanční analýza Řízení letového provozu, s. p." Master's thesis, Vysoká škola ekonomická v Praze, 2006. http://www.nusl.cz/ntk/nusl-379.
Full textSanchez, Verdoux William. "Métaphores de l' écriture et l'espace textuel : P. Sollers, P. Guyotat, S. Sarduy." paris 8, 1986. http://www.theses.fr/1986PA082235.
Full textSato, Hiroki. "J/ψ production in p+p collisions at [square root]{s}=200 GeV." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149057.
Full textDias, Jana?na Silva. "Fatores associados ao trauma mamilar no primeiro m?s p?s-parto." Universidade Estadual de Feira de Santana, 2015. http://localhost:8080/tede/handle/tede/463.
Full textMade available in DSpace on 2017-03-16T22:28:22Z (GMT). No. of bitstreams: 1 Disserta??o Jana?na Vers?o final_02-06.pdf: 687363 bytes, checksum: d808a60f7664fc60a1270e67fa83601a (MD5) Previous issue date: 2015-05-07
This study aimed to assess factors associated with nipple trauma in women who breastfeed, resulting in two articles. The first entitled "Factors associated with nipple trauma in lactation period: a systematic review" was based on the search of publications indexed in the databases Medical Literature Analysis and Retrieval System Online/Pubmed, Latin American and Caribbean Health Sciences, and ScienceDirect, with no restriction on language or publication period. As risk factors for nipple trauma were identified: mother with white or yellow race/color, primiparity, cracked nipples in previous pregnancies, mother who does not live with a partner, use of anesthesia in parturition, gestational age of the newborn between 37 to 40 weeks, presence of breastfeeding in the first hour of life, semi protrude and/or malformed nipples, malposition between mother and child, incorrect lacth of the infant in mother's breast, presence of breast engorgement, nipple pain, use of nursing bottle, use of pacifier and lactational mastitis. On the other hand, the guidance received about how to lacth and positioning the infant in the maternal breast during prenatal was considered as a protective factor against the nipple trauma. The second article entitled "Nipple fissure: study of latent variables in the first month postpartum" consisted of a cross-sectional analysis of a birth cohort, an observational and prospective character, who studied the mother-child dyad. The prevalence of cracked nipples observed in mothers who breastfeed in the first month postpartum was 35.9%. It was found among the latent variables that the unfavorable maternal emotional state (OR= 1.65; 95% CI= 1.26-2.16) and lower availability for breastfeeding (OR= 1.80; 95% CI= 1.25-2.59) were associated with cracked nipples, as well as the covariates parturition in unit that is not recognized as a Baby Friendly Hospital (OR= 1.48; 95% CI= 1.07-2.03), cesarean section (OR= 1.72; 95% CI= 1.33-2.24) inadequate positioning of the newborn during breastfeeding (OR= 3.91; 95% CI= 1.02-14.99), incorrect lacth of the infant the in the maternal breast (OR= 14.36; 95% CI= 7.80-26.46) and the presence of breast engorgement (OR= 2.74; 95% CI= 2.10-3.58). Preventive measures against the risk factors of nipple trauma are necessary to prevent this important cause of pain during breastfeeding and premature weaning.
Este estudo teve como objetivo avaliar os fatores associados ao trauma mamilar em lactantes, tendo como resultado dois artigos. O primeiro intitulado ?Fatores associados ao trauma mamilar no per?odo lactacional: uma revis?o sistem?tica? foi fundamentado na busca de publica??es indexadas nas bases de dados Medical Literature Analysis and Retrieval System Online/Pubmed, Literatura Latino-Americana e do Caribe em Ci?ncias da Sa?de, e ScienceDirect, sem restri??o de idioma ou per?odo de publica??o. Foram identificados como fatores de risco para o trauma mamilar: m?e de ra?a/cor branca ou amarela, primiparidade, presen?a de fissura mamilar em gesta??es anteriores, m?e n?o residir com o companheiro, uso de anestesia no parto, idade gestacional do rec?m-nascido entre 37e 40 semanas, presen?a de mamada na primeira hora de vida, mamilos semiprotrusos e/ou mal formados, posicionamento inadequado entre m?e e filho, pega incorreta do lactente ao seio materno, presen?a de ingurgitamento mam?rio, dor mamilar, uso de mamadeira, uso de chupeta e mastite lactacional. Por outro lado, a orienta??o recebida sobre pega e posicionamento do lactente ao seio materno durante o pr?-natal foi considerada como fator de prote??o contra o trauma mamilar. O segundo artigo intitulado ?Fissura mamilar: estudo de vari?veis latentes no primeiro m?s p?s-parto? consistiu em uma an?lise transversal de uma coorte de nascidos vivos, de car?ter observacional e prospectiva, que estudou a d?ade m?e-filho. A preval?ncia de fissura mamilar observada em lactantes no primeiro m?s p?s-parto foi de 35.9%. Verificou-se entre as vari?veis latentes que o estado emocional materno desfavor?vel (OR= 1.65; IC 95%= 1.26-2.16) e menor disponibilidade para amamentar (OR= 1.80; IC 95%= 1.25-2.59) associaram-se ? fissura mamilar, assim como as covari?veis parto em unidade n?o credenciada como Hospital Amigo da Crian?a (OR= 1.48; IC 95%= 1.07-2.03), parto ces?reo (OR= 1.72; IC 95%= 1.33-2.24), posicionamento inadequado do neonato durante a mamada (OR= 3.91; IC 95%= 1.02-14.99), pega incorreta do lactente ao seio materno (OR= 14.36; IC 95%= 7.80-26.46) e presen?a de ingurgitamento mam?rio (OR= 2.74; IC 95%= 2.10-3.58). A??es de preven??o contra os fatores de risco do trauma mamilar s?o necess?rias para evitar esta importante causa de dor durante a mamada e de desmame precoce.
Bertagnolli, Ana Cristina Coitino. "Sintomatologia p?s-traum?tica e funcionamento executivo." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2013. http://tede2.pucrs.br/tede2/handle/tede/836.
Full textIndividuals who are exposed to traumatic events and develop Posttraumatic Stress Disorder (PTSD) might present psychological, behavioral and cognitive difficulties after being exposed to trauma. Symptoms of PTSD include reexperience of the traumatic event, avoidance of stimuli related to the trauma and increased excitability. Regarding cognitive impairments, in addition to impairment in episodic memory and attention, PTSD has also been associated with impairments in executive functions. The impairments are not associated only with the formal diagnosis of PTSD and were also identified in individuals with high symptomatology of the disorder. This study aims to investigate cognitive performances on measures of executive functions in individuals with PTSD symptoms. For this, two studies were conducted, one theoretical and one empirical, presented in form of articles. The theoretical article sought to establish an overview of executive impairments shown by individuals exposed to trauma with either formal diagnoses of PTSD, history of PTSD or PTSD symptoms through a systematic review. The empirical article aimed to assess the cognitive performance of 29 subjects exposed to trauma and high scores on SPTSS inhibition, working memory and cognitive flexibility symptoms. These individuals had their performances compared to 24 individuals who were never exposed to any traumatic event, matched in age and education. Considering the high prevalence of disorders presented in comorbidity with PTSD the control group was formed by individuals who were being treated for any psychological or psyquiatric disorder other than PTSD. The control group consisted of clinical population because the presence of other psychopathologies can cause impairments on executive function. PTSD symptoms were assessed with the Screen for Posttraumatic Stress Symptoms (SPTSS), that aims to identify reexperience, avoidance and increased excitability symptoms in individuals exposed to trauma. A descriptive study with cross-sectional design was conducted. The group with individuals exposed to trauma and high PTSD symptoms showed poorer performance on Trail Making Test (p=0,009), an instrument used to assess cognitive flexibility. These impairments can lead to difficulties in adopting new cognitive strategies needed to deal with cognitive and environmental triggers that lead to the memory of the traumatic event. Only impairments in cognitive flexibility were identified, suggesting that some but not all EF components are affected by PTSD
Indiv?duos que experienciam um evento estressor traum?tico e desenvolvem Transtorno de Estresse P?s-traum?tico (TEPT) podem apresentar dificuldades psicol?gicas, comportamentais e cognitivas decorrentes da exposi??o ao trauma. Entre os principais sintomas do TEPT destacam-se a reviv?ncia do evento traum?tico, a esquiva de est?mulos relacionados ao trauma e a excitabilidade aumentada. No que se refere aos preju?zos cognitivos, al?m dos preju?zos na mem?ria epis?dica e na aten??o, o TEPT tem sido associado a preju?zos no funcionamento executivo. Esses preju?zos n?o s?o associados apenas ao diagn?stico formal de TEPT, sendo, tamb?m, identificados em indiv?duos com alta sintomatologia do transtorno. O objetivo geral deste estudo foi investigar o desempenho cognitivo em medidas de Fun??es Executivas (FE) de indiv?duos com elevada sintomatologia p?s-traum?tica de TEPT. Para isso, foram realizados dois estudos, um te?rico e um emp?rico, apresentados na forma de artigos. O artigo te?rico busca estabelecer, atrav?s de uma revis?o sistem?tica, um panorama geral dos preju?zos executivos apresentados por indiv?duos expostos a traumas com sintomas e diagn?stico formal atual ou passado de TEPT. O artigo emp?rico tem como objetivo avaliar o desempenho cognitivo de 29 indiv?duos expostos a traumas e com elevada sintomatologia p?s-traum?tica em medidas de inibi??o, flexibilidade cognitiva e mem?ria de trabalho. Esses indiv?duos tiveram seu desempenho comparado com o de 24 controles n?o expostos a nenhum evento traum?tico, pareados em rela??o ? idade e escolaridade. J? que indiv?duos com TEPT frequentemente apresentam outros transtornos em comorbidade, os controles inclu?dos tamb?m estavam em tratamento psicol?gico ou psiqui?trico para outras psicopatologias. Dessa forma, buscou-se observar poss?veis altera??es de desempenho cognitivo que n?o se devessem simplesmente ? exist?ncia de um transtorno, mas especificamente ao TEPT. Os sintomas de TEPT foram avaliados atrav?s do Instrumento de Rastreio de Sintomas de Estresse P?s-traum?tico (SPTSS), que tem como objetivo identificar sintomas de reviv?ncia, excitabilidade aumentada e esquiva em indiv?duos expostos a traumas. A pesquisa realizada foi descritiva, com delineamento do tipo transversal. O grupo composto por indiv?duos expostos a traumas e com alta sintomatologia de TEPT apresentou pior desempenho no Trail Making Test (p=0,009) instrumento utilizado para avalia??o da flexibilidade cognitiva. Esses preju?zos podem conduzir a dificuldades na ado??o de novas estrat?gias cognitivas necess?rias para lidar com os gatilhos ambientais e cognitivos que remetem ao evento traum?tico. Os resultados indicam que preju?zos em um ou mais componentes das FE podem estar associados aos sintomas de TEPT.
Azambuja, F?bio Melo de. "A problem?tica do cheque p?s-datado." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2007. http://tede2.pucrs.br/tede2/handle/tede/3998.
Full textA presente disserta??o versa sobre o cheque p?s-datado, a sua origem, a sua utiliza??o pela sociedade brasileira, a sua previs?o legal, a doutrina e a jurisprud?ncia sobre o assunto. Considerando-se a sua crescente utiliza??o e a falta de regulamenta??o legal, ocorre uma inseguran?a jur?dica. Comenta-se, tamb?m, a solu??o legal encontrada por outros pa?ses. Analisam-se, ainda, os projetos de lei em tramita??o na c?mara federal e senado que buscam a regulamenta??o do cheque p?s-datado. A disserta??o encerra, demonstrando que os projetos de lei n?o poder?o alterar a estrutura da lei do cheque, pois a referida lei ? fruto de acordo internacional aprovado pelo congresso nacional, concluindo que o titulo de credito analisado devera surgir como um novo titulo de credito, atrav?s de lei pr?pria.
Lima, Elissandra Nascimento de Moura. "Tect?nica p?s-rifte na Bacia Potiguar." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18359.
Full textThe study of Brazilian sedimentary basins concentrates on their rift phase, whereas the Post-rift phase has been considered a tectonic quiescent period. The post-rift sequence of the Potiguar Basin, in the far northeastern Brazil, was once considered little deformed, however several studies have shown how that it was affected by major fault systems. The purpose of this thesis is to characterize the post-rift tectonic. The specific objectives are: to characterize the Neogene and Quaternary sedimentary units that outcrop of the Potiguar Basin; to show how the NW-SEtrending Afonso Bezerra Faults System deformed outcrop rocks in the Basin; to describe soft-sediment deformation in gravels of the Quaternary Alluvial Deposits from A?u River. Facies analyses, grain-size studies, luminescence dating, remote sensing, structural mapping, shallow geophysics (georadar), paleostress and petrography were carried out. The structural mapping and the georadar sections indicated that the Carnaubais and Afonso Bezerra fault systems formed fractures, silicified and non-silicified faults or deformation bands, affecting mainly the A?u, Janda?ra and Barreiras formations. The petrographic data indicate that the strong silicification resulted in a sealant character of the faults. Paleostress analysis indicates that two stress fields affected the Basin: the first presented N-S-trending compression, occurred from the Neocretaceous to the Miocene; the second stress field presents E-W-trending compression, acts from the Miocene to the present. It was verified once the Afonso Bezerra System Faults was reactivated in periods post-Campanian and affects all post-rift lithostratigraphic units of Potiguar Basin, including Quaternary sedimentary covers. The study about soft-sediment deformation structures indicates that they are similar in morphology and size to modern examples of seismically-induced deformation strutures in coarse sediments. TL and OSL ages indicate that sediment deposition and associated soft-sediment deformation occurred at least six times from ~352 Ka to ~9 Ka. Finally these studies demonstrate how recent is tectonics in the Basin Potiguar
Os estudos sobre as bacias sedimentares brasileiras se concentram em sua fase rifte, enquanto a fase p?s-rifte tem sido considerada um per?odo de pouca atividade. A sequ?ncia p?s-rifte da Bacia Potiguar, no extremo nordeste brasileiro, j? foi considerada pouco deformada, contudo, in?meros trabalhos v?m demonstrando como ela ? afetada por importantes sistemas de falhas. A finalidade geral desta tese ? caracterizar a tect?nica p?s-rifte na Bacia Potiguar. Os objetivos espec?ficos s?o: caracterizar as unidades sedimentares cenozoicas aflorantes e a tect?nica associada; evidenciar como o Sistema de Falhas de Afonso Bezerra deformou rochas aflorantes da Bacia; descrever deforma??o em sedimentos inconsolidados nos conglomerados dos Dep?sitos Aluviais quatern?rios do Rio A?u. An?lises de f?cies, estudos granulom?tricos, data??o por luminesc?ncia, sensoriamento remoto, mapeamento estrutural, geof?sica rasa (georadar), an?lises de paleotens?es e petrografia foram realizados. O mapeamento estrutural e as sec??es de georadar indicaram que os sistemas de falhas Carnaubais e Afonso Bezerra formaram juntas, falhas silicificadas e n?o-silicificadas e bandas de deforma??o, afetando principalmente as forma??es A?u, Janda?ra e Barreiras. Os dados petrogr?ficos indicam que a forte silicifica??o deu ?s falhas um car?ter selante. O estudo de paleotens?es indica dois campos de tens?es afetando a Bacia: o primeiro, com compress?o N-S, atuou do Neocret?ceo ao Mioceno; o segundo, com compress?o E-W, atua do Mioceno ao presente. Constatou-se que o Sistema de Falhas de Afonso Bezerra foi reativado em per?odos p?s-campanianos e afeta todas as unidades litoestratigr?ficas p?s-rifte da Bacia Potiguar, inclusive as coberturas quatern?rias. O estudo sobre deforma??o em sedimentos inconsolidados indica que esta ? similar na morfologia e no tamanho aos exemplos modernos de estruturas de deforma??o sismicamente induzida em sedimentos grossos. Idades por TL e LOE indicam que a deposi??o dos sedimentos e a deforma??o associada ocorreram pelo menos em seis eventos entre aproximadamente 352 Ka e 9 Ka. Enfim estes estudos demonstram qu?o recente ? a tect?nica na Bacia Potiguar
Hazelden, Jeffrey B. "I s m i t p a I." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524139077065679.
Full textJoy, Jonathan Stuart. "Synthesis and charaterisation of mixed s-/p-block organometallics and p-block ligand systems." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402058.
Full textDAVID, PATRICK. "Contribution a l'etude des resines polystyrylpyridines (resines p. S. P. ) et elaboration de materiaux derives." Paris 11, 1991. http://www.theses.fr/1991PA112272.
Full textArbid, Walid. "Naissance et évolution du parti socialiste progressiste libanais P. S. P. De 1949 à 1958." Rennes 2, 1989. http://www.theses.fr/1989REN20003.
Full textOur study is oriented into three parts: at first, we have stressed on analysing the original situation of Lebanon under the French mandate, and to study the structures left by its tutelage, as well as the difficult situation existing at the time of the independence. This analysis has requested a round-up of the different political formations. We will be presenting here the complexed context in which a new party is going to take root, the socialist progressive party. The second part, we will analyse the socio-political context and the specific conditions which have prevailed at the birth of the socialist progressive party. Obviously, the role of Kamal Joumblatt, Druze leader, appears in the limelight. Kamal Joumblatt comes from a family which has played a very important role in the history of Lebanon. Finally the third part of our study brings us to analyse the programme, the organisation, the activity of the P. S. P. On the internal and international political level since 1949, date of birth of the party, until the crisis of 1958. The structure of the party, its programme and electoral performances are analysed along with the positions of the P. S. P. Versus the big events of the moment, such as the Egyptian revolution of 1952, the Suez crisis in 1956, and the Lebanese crisis in 1958
Ferguson, Robert James. "P-S seismic inversion, modeling, processing, and field examples." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq20825.pdf.
Full textLevinsen, Jesper F. "Paired fermionic superfluids with s- and p-wave interactions." Connect to online resource, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3284444.
Full textBergroth, Magnus, and Alexander Keder. "Multipel regressionsanalys av S&P 500 Energy Index." Thesis, KTH, Matematik (Inst.), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-166785.
Full textKoursarou, Despina. "Complexes and applications of substituted bidentate P, S ligands." Thesis, Cardiff University, 2006. http://orca.cf.ac.uk/56133/.
Full textVasey, Catriona J. "Downgoing S-to-P wave conversions in the mantle." Thesis, Keele University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302272.
Full textPereira, Natalie. "Processamento discursivo e executivo p?s-traumatismo cranioencef?lico." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2015. http://tede2.pucrs.br/tede2/handle/tede/6440.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
This dissertation contains two empirical articles which investigated the communication skills and executive functions of adults with traumatic brain injury (TBI) upon hospital admission (inpatients) and after hospital discharge (outpatients). The aim of the first study was to compare discursive, pragmatic, lexical-semantic, reading and writing skills between inpatients with TBI (iTBI) and adults with no neurological damage. Our results showed between-group differences on all parameters evaluated, with control participants outperforming the iTBI group across all measures used in the study. The aim of the second investigation was to identify differences between outpatients with mild or severe TBI (oTBI) and healthy adults on communicative and executive functions, as well as to investigate associations and dissociations between patterns of impairment in the oTBI sample. The two groups differed in their performance on conversational and narrative discourse tasks, as well as on the following executive functions: planning, cognitive flexibility, working memory, processing speed and inhibitory control. Overall, the findings suggested that even subjects with relatively mild lesions and a theoretically good prognosis may experience impairments in discourse processing. The patient group was then further divided according to TBI severity, and differences in executive functions were identified between these two subgroups, as well as between each of these categories and the control group. Patients with severe TBI performed worse than control participants and subjects with mild TBI, and differences between patients with mild and severe TBI were identified in both studies. Lastly, the TBI groups showed dissociations between impairments in rule maintenance and processing speed, and associations between cognitive performance on planning tasks. These findings contributed to the current literature on the continuum of communicative and executive impairment profiles across all levels of TBI severity. The analyses performed in this dissertation may be used in public health services to perform a more accurate assessment of patients with TBI and improve prognostic accuracy, since some impairments may have an impact on global functioning and affect the length of the post-TBI recovery period.
A presente disserta??o de mestrado compreende dois artigos emp?ricos que pretendem explorar a avalia??o dos processamentos comunicativos e executivos de pacientes adultos com traumatismo cranioencef?lico (TCE) em dois momentos ap?s a les?o cerebral: no momento da interna??o (inpatients) e ap?s alta hospitalar (outpatients). O primeiro estudo objetiva comparar os processamentos discursivo, pragm?tico, l?xico-sem?ntico, de leitura e de escrita de pacientes adultos p?s TCE do tipo inpatients (TCEi), comparando o desempenho com indiv?duos sem les?o cerebral. Os resultados indicaram que os participantes se diferenciaram nos quatro processamentos comunicativos sendo que o grupo com TCE teve pior desempenho. O segundo estudo teve como objetivo verificar se existem diferen?as entre pacientes p?s-TCE - do tipo outpatients com gravidades leve e grave - e indiv?duos saud?veis, quanto ao desempenho nos processamentos comunicativos e executivos, al?m de identificar se associa??es e dissocia??es existem na amostra de TCE. Encontraram-se diferen?as entre grupos nos escores do discurso conversacional e narrativo e nas habilidades executivas de planejamento, flexibilidade cognitiva, mem?ria de trabalho, velocidade de processamento e inibi??o. Tais achados, de forma geral, indicam que pacientes com menor les?o e teoricamente melhor progn?stico, podem apresentar desempenho discursivo abaixo do esperado. Al?m disso, as tarefas indicaram diferen?as nas habilidades executivas entre os tr?s grupos. pacientes com TCE grave tiveram pior desempenho do que controles e pacientes com TCE leve, ainda TCE leve diferenciou-se dos graves nos dois estudos. Por ?ltimo, dissocia??es entre os grupos de TCE foram encontradas nos itens de manuten??o de regras e velocidade de processamento e associa??es encontradas nos itens de planejamento. Os resultados dos dois estudos emp?ricos contribuem para a comunidade cient?fica em entender um perfil cont?nuo de dificuldades mesmo em pacientes com o menor ?ndice de gravidade de les?o. As an?lises apresentadas nessa disserta??o de mestrado s?o poss?veis de serem implementadas nos servi?os p?blicos para avalia??o mais apurada desses pacientes e para identificar melhor progn?stico j? que algumas dificuldades podem afetar globalmente o funcionamento dos pacientes e dificultar, inclusive, o per?odo de recupera??o p?s les?o cerebral.
Costa, Carolina. "O p?s-moderno na arquitetura nordestina (1985-2000)." PROGRAMA DE P?S-GRADUA??O EM ARQUITETURA E URBANISMO, 2012. https://repositorio.ufrn.br/jspui/handle/123456789/22081.
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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES)
Este trabalho estuda exemplares da produ??o arquitet?nica contempor?nea nordestina que aparentam aproximar-se das tend?ncias p?s-modernas, discutidas entre as d?cadas de 1960 e 1980 nos pa?ses de Primeiro Mundo. A fonte-base desta pesquisa foram os peri?dicos nacionais (Revistas AU e Projeto). Foram encontrados 205 projetos realizados no Nordeste entre os anos de 1985 e 2000, dentre os quais foram identificados e selecionados v?rios projetos para ilustrar o estudo. A inten??o da pesquisa ? de compreender a produ??o arquitet?nica no Nordeste nesta ?poca, verificando como a tend?ncia internacional foi interpretada e se realiza na arquitetura produzida.
The present dissertation reviews samples of northeastern Brazil contemporary architectural production that shows signs of being closer to the post-modern tendencies, discussed between the 1960?s and 1980?s in First World countries. The research used as base resource the national periodicals AU and Projeto Magazines in which were found 205 projects in the region between 1985 and 2000, among which several projects were identified and selected to illustrate the study. The purpose of this research is to understand the architectural production in the Northeast at this time period, analyzing how the international tendency has been interpreted and appears in the architecture produced.
Wainwright, Robert J. "Finding "small' matrices P,Q such that PDQ = S." Thesis, University of St Andrews, 2002. http://hdl.handle.net/10023/15171.
Full textHalliday, David Alan. "The synthesis and characterisation of poly(p-phenylenevinylene)s." Thesis, University of Cambridge, 1992. https://www.repository.cam.ac.uk/handle/1810/272381.
Full textHabach, Lhassan. "Comportement P. S. Des extrêmes de certains processus stationnaires." Lille 1, 1997. http://www.theses.fr/1997LIL10171.
Full textZahálka, Martin. "Galvanické pokovování hořčíkové slitiny s Ni-P bond coat." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2019. http://www.nusl.cz/ntk/nusl-401926.
Full textLi, Qi. "Competing orders in s-wave and p-wave superconductors /." Connect to title online (Scholars' Bank) Connect to title online (ProQuest), 2008. http://hdl.handle.net/1794/8285.
Full textTypescript. Includes vita and abstract. Includes bibliographical references (leaves 107-110). Also available online in Scholars' Bank; and in ProQuest, free to University of Oregon users.
Li, Qi 1976. "Competing orders in s-wave and p-wave superconductors." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/8285.
Full textThis dissertation investigates the interplay between, and the possible coexistence of, magnetic and superconducting order in metals. We start with studying the electromagnetic properties of s-wave superconductors near a ferromagnetic instability. By using a generalized Ginzburg-Landau theory and scaling arguments, we show that competition between magnetic order and superconducting order can change the scaling of observables. For instance, the exponent for the temperature dependence of the critical current can deviate from the Ginzburg-Landau value of 3/2. These results may be relevant to understanding the observed behavior of MgCNi 3 . We then study the nature of the superconductor-to-normal-metal transition in p-wave superconductors. Although the phase transition is continuous at a mean- field level, a more careful renormalization-group analysis in conjunction with large-n expansion techniques strongly suggest that the transition is first order. This conclusion is the same as for s-wave superconductors, where these techniques also predict a first-order transition. In p-wave superconductors, topological excitations known as skyrmions are known to exist in addition to the more common vortices. In the third part of this dissertation, we study the properties of skyrmion lattices in an external magnetic field. We propose iv experiments to distinguish vortex lattices from skyrmion lattices by means of their melting curves and their μSR signatures.
Adviser: Dietrich Belitz
Cogo, Giovanni <1989>. "MultiLayer ANNs: predicting the S&P 500 index." Master's Degree Thesis, Università Ca' Foscari Venezia, 2016. http://hdl.handle.net/10579/7670.
Full textHilaire, Didier. "Biodégradation de composés organophosphores à liaison P-S (VX, tetriso et demeton-S-methyl)." Nancy 1, 2001. http://www.theses.fr/2001NAN12008.
Full textJohansson, Tommy. "Studies on Transformations of H-Phosphonates into DNA Analogues Containing P-S or P-C Bonds." Doctoral thesis, Stockholm : Institutionen för organisk kemi, Univ, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-202.
Full textVolpi, Matteo. "Charged particle multiplicities in pp interactions at p s = 900 GeV and p s = 7 TeV measured with the ATLAS detector at the LHC." Doctoral thesis, Universitat Autònoma de Barcelona, 2010. http://hdl.handle.net/10803/32136.
Full textThe thesis is focused on the studies of the inclusive inelastic production of the charged particles at the LHC collider that operates at the frontier center-of-mass energy of 7TeV. The analyzed data correspond to about sixteen inverse micro-barn of the very first integrated luminosity collected by the ATLAS detector by the beginning of 2010. Having fully taken advantage of above factors, scrupulous studies performed in the thesis resulted in the measurements of the charged particles inclusive production cross-sections that were compared to the variety of popular phenomenological models of the soft QCD. The results reported in the thesis constitute a novel data sample corresponding to a new kinematic QCD region. Thus, the mild (10-20)% disagreement between the data and the predictions of different phenomenological models came as no surprise. The reported results were used to adjust existing soft QCD models to adequately reproduce the busy hadronic environment present in the LHC collisions, thus reinforcing current theoretical framework. The type of the studies presented in the thesis belongs to a well established research line in the field of high energy physic (HEP) that consists of full re-discovery of the Standard Model in the environment of new collider experiment before attempting to move further. Studies presented in the thesis have already led to one publication in the leading high energy physics journal, PLB (March 2010), and another paper is in preparation. I took an important role in this, very first publication of the ATLAS results, often considered as an informal criteria for the PhD thesis merits inside of the HEP community. Additional strong points of the work presented in the thesis may be summarized as following: 1) Very well structured and focused presentation of the studies performed. 2) Meticulous following of the analysis canons adopted in the HEP community. 3) Appropriate usage of the most up-to-date soft QCD simulations. 4) Careful studies of the impact of the detector conditions and trigger selection efficiency on the results. 5) Careful evaluation of the systematic errors on the reported cross-sections and distributions.
Santana, Tr?cia Caroline da Silva. "Percep??o dos usu?rios nos espa?os p?blicos: avalia??o p?s-ocupa??o em tr?s pra?as de Natal-RN." Universidade Federal do Rio Grande do Norte, 2003. http://repositorio.ufrn.br:8080/jspui/handle/123456789/12338.
Full textThe research investigates the acting and the importance for the users of the public squares located predominantly in residential areas. It presents the results of the posoccupation evaluations accomplished in three squares, whose physical, environmental characteristics, equipments and fumitures are different in its qualities and amounts, taking in consideration aspects related to the users' physical and psychological comfort and of the inhabitants of the I spill. The collection of data involved physical risings and of files, observations behavious, application of questionnaires and interviews, analyzed qualitative as quantitatively so much for a larger precision and validity of the investigation. The results were obtained through the relationship among the users' perception the environmental attributes and the different levels of apropriation/use of the studied places. They indicate that the aspects composicionais of physical order of the space affects the type and the intensity of use of the squares intimately, contributing positive or negatively for its valor. It is evidenced like this, that the low freq?entation of the public squares of Natal, is due mainly to referring aspects to the physical quality and the amount of the fumitures and urban equipments. It is ended that the investments and the physical planning of these public spaces should be based in the real knowledge of the aspirations of the population objective, in way to allow its largest use and valor
A pesquisa investiga o desempenho e a import?ncia para os usu?rios das pra?as p?blicas localizadas em ?reas predominantemente residenciais. Apresenta os resultados das avalia??es p?s-ocupa??o realizadas em tr?s pra?as, cujas caracter?sticas f?sicas, ambientais, equipamentos e mobili?rios s?o distintos em suas qualidades e quantidades, levando em considera??o aspectos relacionados ao conforto f?sico e psicol?gico dos usu?rios e dos moradores do entorno. A coleta de dados envolveu levantamentos f?sicos e de arquivos, observa??es comportamentais, aplica??o de question?rios e entrevistas, analisados tanto qualitativa quanto quantitativamente para uma maior precis?o e validade da investiga??o. Os resultados foram obtidos atrav?s da rela??o entre a percep??o dos usu?rios os atributos ambientais e os diferentes n?veis de apropria??o/uso dos locais estudados. Eles indicam que os aspectos composicionais de ordem f?sica do espa?o afetam intimamente o tipo e a intensidade de utiliza??o das pra?as, contribuindo positiva ou negativamente para a sua valoriza??o. Evidencia-se assim, que a baixa freq?enta??o das pra?as p?blicas de Natal, se deve principalmente a aspectos referentes ? qualidade f?sica e ? quantidade dos mobili?rios e equipamentos urbanos. Conclui-se que os investimentos e o planejamento f?sico destes espa?os p?blicos devem ser embasados no conhecimento real das aspira??es da popula??o alvo, de modo a permitir sua maior utiliza??o e valoriza??o
Messa, M?rcia Rejane Postiglioni. "As mulheres s? querem ser salvas : Sex and the City e o p?s-feminismo." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2006. http://tede2.pucrs.br/tede2/handle/tede/4470.
Full textO presente trabalho utiliza o circuito de cultura de Richard Johnson como ferramenta para refletir acerca do programa norte-americano Sex and the City, da HBO. Os tr?s momentos do circuito (produ??o, texto e recep??o) s?o contemplados a fim de desenvolver um estudo cultural cr?tico que permita um melhor entendimento de quest?es sobre as mulheres e a cultura da m?dia na sociedade contempor?nea. A pesquisa de recep??o foi realizada exclusivamente com mulheres, f?s do programa, e o objetivo da articula??o entre os tr?s momentos do processo ? delinear quais as representa??es da mulher que o programa difunde, investigar como as representa??es da feminilidade e masculinidade expostas em Sex and the City s?o interpretadas, reproduzidas e/ou resistidas por suas f?s, assim como at? que ponto o programa reconfigurou, remodelou e/ou reafirmou uma determinada identidade feminina.
Lam, Kar-Hei. "Essays on the modelling of S&P 500 volatility." Thesis, City University London, 2004. http://openaccess.city.ac.uk/8406/.
Full textHill, Saylina. "Molecular modelling and synthesis of substituted poly(p-phenylene)s." Thesis, University of Surrey, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.402784.
Full textHartmann, Marcelo Junges. "Avalia??o funcional do enxerto pancre?tico p?s-transplante." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2008. http://tede2.pucrs.br/tede2/handle/tede/1588.
Full textA drenagem venosa sist?mica do enxerto pancre?tico tem sido associada ? hiperinsulinemia, que, por sua vez, pode estar relacionada ? dislipidemia, resist?ncia insul?nica (RI) e s?ndrome metab?lica. ? poss?vel que a RI seja respons?vel, pelo menos em parte, pela hiperinsulinemia descrita em transplantados de p?ncreas, atribu?da ? drenagem venosa sist?mica. Entretanto a preval?ncia de resist?ncia ? insulina associada a este procedimento bem como a capacidade da c?lula beta do enxerto em sobrepor-se a este efeito n?o s?o bem conhecidas. O objetivo desse estudo foi avaliar o metabolismo glic?dico em transplantados de p?ncreas com drenagem venosa sist?mica, atrav?s de insulinemia, glicemia e pept?deo C de jejum, hemoglobina glicosilada, HOMA e curvas de glicose e insulina s?ricas ap?s sobrecarga de glicose. Foram analisados 30 transplantados de p?ncreas insulino-independentes, 23 SPK, 2 PAK e 5 PTA. A glicemia, insulinemia e pept?deo C basais foram respectivamente: 85,7+-14,2 mg/dl, 17,8+-8,6 mU/ml, 3,4+-1,7 ng/ml. A hemoglobina glicosilada m?dia foi de 6,0(+-0,7)%. Atrav?s do HOMA, identificou-se dois grupos de pacientes, insulino-resistentes (n=20) e insulino-sens?veis (n=10). Ambos apresentaram controle glic?mico adequado e semelhante, entretanto, apenas o grupo resistente apresentou hiperinsulinemia basal, al?m de resposta insul?nica exacerbada ? sobrecarga de glicose oral. Conclui-se que hiperinsulinemia n?o ? achado universal em transplantados de p?ncreas com drenagem venosa sist?mica. Tal achado parece estar relacionado com resist?ncia ? insulina, presente em grande parte desta popula??o. Ainda, o controle glic?mico ? adequado, evidenciando a capacidade da c?lula beta pancre?tica a sobrepor-se ao aumento da RI.
Cottineau-Saïd, Luc. "L'identité professionnelle des enseignants de S. E. G. P. A." Paris 12, 2003. http://www.theses.fr/2003PA120066.
Full textThis study focusses on four French departments (the Gard, the Morbihan, the Nord and the Val-de-Marne) which present different geographic, demographic, economic or cultural characteristics, and aims at defining the professional identity of SEGPA teachers. In fact, their special status does already tend to set them apart from their colleagues both in primary and secondary schools. The status of these teachers seems paradoxical because, on the one hand, they come under the control of Primary Education sector while teaching in the Secondary Education system; and on the other hand, although they work in middle schools, the special units in which they teach are not fully integrated into the Secondary system, in spite of the measures put forward by the 1989 "Loi d'Orientation" (Framework Law) or the circulars of both 1996 and 1998 which define the integration of SEGPAs. We have made a study of the motives which have prompted these teachers to work in special education in a middle school rather than in primary education. We have highlighted the fact that though the situations are different in the four departments, the idea of a common identity nevertheless prevails. Our research draw on historical data relating to the origins of special education, on statistical data regarding education, special or not, on sociological data studying the status of both primary and secondary education teachers, without overlooking the laws that rule SEGPAs, whether (1967) or more recent (1989 Loi d'Orientation or 1996 and 1998 circulars on the renovation of middle schools). The survey questionnaires, followed up by individual interviews, have given us a clearer understanding of the professional identity of SEGPA teachers and revealed the specificity of their role
Dellus, Nicolas. "Bis-Ylures-P,S : équivalents synthétiques de carbone atomique asymétrique." Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1141/.
Full textThe prime objective of this PhD was the research of a new synthetic tool able to react as a synthetic equivalent of asymmetric atomic carbon and usable in classic laboratory conditions. For this, we have synthesized the first dissymmetric Phosphonio-Sulfonio-Bis-Ylide, including two different ylide functions cumulated on a central carbon. The research work presented in this memoir got onto three different problematics : The first chapter presents a state of the art of the molecules usable as a source of atomic carbon. In the second chapter, we present a study of a straightforward and adaptable synthetic way to a stable and isolable Phosphonio-Sulfonio-Bis-Ylide. In this part, is also completely detailed their original crystallographic and electronic structures. In the third chapter, we demonstrate the high potential as a synthetic equivalent of asymmetric atomic carbon of the P,S-Bis-Ylides. We show also the development of a new methodology allowing the realization the Wittig reactions at room temperature. Finally, the fourth chapter presents the use of P,S-Bis-Ylides as precursors of carbenes. To realize it, we have exploited the good leaving group nature of the sulfonium fragment to substitute it by a phosphenium fragment