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1	Avalia??o das caracter?sticas de afetividade em crian?as e jovens com s?ndrome de down Rodrigues, Elaine Cust?dio 31 March 2008 (has links) Made available in DSpace on 2014-12-17T15:38:39Z (GMT). No. of bitstreams: 1 ElaineCR.pdf: 576997 bytes, checksum: 842ec952fb6bebe06af3dc5fcc704a72 (MD5) Previous issue date: 2008-03-31 / This work presents the processes and the results of a research concerning the affectivity in children suffering from the Down?s Syndrome (DS). The relevance of the study is justified due to the need of the development of researches, in the area of psychological evaluation of people who suffers from Down?s Syndrome (DS), that are backed by the use of appropriate instruments for such purpose. The thematic discussed focuses the characteristics of the affectivity of children suffering from Down?s Syndrome. Affectivity, conceptually, is considered a wide phenomenon, including several aspects such as emotions, passions, anxiety, anguish, sadness, happiness and even the pleasure sensations and pain. The general objective of the study consisted of investigating the manifestation of the affectivity in children and young with Down?s Syndrome and the parents? and educators? perception concerning the expression of the affectivity in the behavior and in the social activities. The specific objectives were: to identify the parents' perceptions about the several manifestations of indicative behaviors of affectivity; to verify in the social atmosphere, outside home, through the teachers' perception, the several forms and intensities of the expression of the affectivity; and, to make possible the use of the technique of Zulliger (Z-test) in people with Down?s Syndrome. 70 (seventy) children and young with Down?s Syndrome participated in the research, in the age group from 04 to 26 years old, which are attended by Institutions of Para?ba and of Rio Grande do Norte. The instruments used were two questionnaires, applied with the parents and teachers, and the projective technique, Z-test, applied, individually, with the children and young with Down?s Syndrome. For analysis of the data of the questionnaires, the program Trideux-Mots was used, with the intention of selecting the main outstanding words for the parents and teachers concerning the expression of the children's affectivity and young with Down?s Syndrome. For so much, it was organized a database that was processed by that program and, soon after, interpreted through the Factorial Analysis by Correspondence (AFC), looking for to clear the modalities of presented answers in an organized way, through a graph. The data of the Z-test were analyzed, taking in consideration the need to characterize the aspects of the affectivity and the elaboration of specific norms for this sample type, through normalized scores. In agreement with the data presented by Tri-deux-Mots, it was observed that in the affective behavior and in the relationship with the other, home and in the school, the children and young with Down?s Syndrome they express your affectivity through positive and negative characteristics, in the same way that any other child that doesn't have to syndrome. The Z-test made possible initial elements to work with that population, however it is necessary that grow other researches with the intention of investigating the reason of the answers they present not the specific categories that you/they are related to the affectivity, since it was well-known the diversity of affective characteristics presented by the researched group / Este trabalho apresenta os processos e os resultados de uma pesquisa acerca da afetividade em crian?as e jovens acometidos da s?ndrome de Down (SD). A relev?ncia do estudo justifica-se devido ? necessidade do desenvolvimento de pesquisas, na ?rea de avalia??o psicol?gica de pessoas com s?ndrome de Down (SD), que sejam respaldadas mediante a utiliza??o de instrumentos apropriados para tal finalidade. A tem?tica discutida enfoca as caracter?sticas de afetividade das crian?as com SD. A afetividade, conceitualmente, ? considerada ampla, englobando aspectos diversos como emo??es, paix?es, ansiedade, ang?stia, tristeza, alegria e at? mesmo as sensa??es de prazer e dor. O objetivo geral do estudo consistiu em investigar a manifesta??o da afetividade nas crian?as e jovens com SD e a percep??o de pais e educadores quanto ? express?o da afetividade no comportamento e nas atividades sociais. Os objetivos espec?ficos foram: identificar percep??es dos pais sobre as diversas manifesta??es de comportamentos indicativos de afetividade; verificar no ambiente social extra-domic?lio, atrav?s da percep??o dos professores, as diversas formas e intensidades da express?o da afetividade; e possibilitar o uso da t?cnica de Zulliger (Z-Teste) em pessoas com SD. Participaram dessa pesquisa 70 (setenta) crian?as e jovens com SD, na faixa et?ria de 04 a 26 anos, assistidos junto a Institui??es da Para?ba e do Rio Grande do Norte. Os instrumentos utilizados foram dois question?rios, aplicados com os pais e professores, e a t?cnica projetiva, Z-Teste, aplicada, individualmente, nas crian?as e jovens com SD. Para an?lise dos dados dos question?rios, utilizou-se o programa Tri-deux-Mots, com o intuito de selecionar as principais palavras destacadas pelos pais e professores acerca da express?o da afetividade das crian?as e jovens com SD. Para tanto, foi organizado um banco de dados que foi processado por esse programa e, em seguida, interpretado atrav?s da An?lise Fatorial por Correspond?ncia (AFC), buscando esclarecer as modalidades de respostas apresentadas de forma organizada, atrav?s de um gr?fico. Os dados do Z-Teste foram analisados, levando em considera??o a necessidade de caracterizar os aspectos da afetividade e a elabora??o de normas espec?ficas para este tipo de amostra, por meio de escores normalizados. De acordo com os dados apresentados pelo Trideux-Mots, observou-se que tanto no comportamento afetivo como no relacionamento com o outro, em casa e na escola, as crian?as e jovens com SD expressam sua afetividade atrav?s de caracter?sticas positivas e negativas, da mesma forma que qualquer outra crian?a que n?o tenha a s?ndrome. O Z-Teste possibilitou elementos iniciais para se trabalhar com essa popula??o, no entanto ? preciso que se desenvolvam outras pesquisas com o intuito de investigar o porqu? das respostas n?o apresentarem as categorias espec?ficas que se encontram relacionadas ? afetividade, j? que foi not?ria a diversidade de caracter?sticas afetivas apresentadas pelo grupo pesquisado Afetividade S?ndrome de Down Z-Teste. Afectivity Down-Syndrome Z-test CNPQ::CIENCIAS HUMANAS::PSICOLOGIA
2	Test Environment for Optimal Performance in high school students: Measure development and the relationship with standardized test scores. Rair, Randal J. 16 August 2019 (has links) No description available. Education Education Philosophy Educational Evaluation Educational Leadership Educational Psychology Educational Tests and Measurements
3	Correlations between the Net Promoter Score Subgroups and Video Streaming Quality / Korrelationer mellan undergrupperna hos Net Promoter Score och videostreamingkvalitet Gustafsson, Johanna January 2018 (has links) The video streaming business has grown substantially during the last decades. To optimize the user experience in video streaming, it is important to know how the user satisfaction relates to the technical qualities for the video streaming services, such as bufferings and startup times. The Net Promoter Score (NPS) is a widely used management tool used in surveys to measure customer satisfaction and loyalty. The users are categorized into three user groups based on a survey question. This thesis investigates whether it is possible to find correlations between the three user groups based on NPS ratings and measured technical qualities from video streams. Initial data exploring through information visualization suggested that the data should be separated into live streams and video-on-demand. Statistical analysis showed that the NPS user groups have no correlations to how long the users are watching the streams, nor to how long the video takes to start. The results showed, that the users watching live streams seem to be more sensitive to lower qualities than those watching video- on-demand. However, this could also be due to the fact that the measured technical qualities during live streams are generally lower. The buffering and the seek time proved to have correlations to the measured user satisfaction, but several other factors such as the actual video content could also have big impacts on the user’s ratings. The users which had experienced more buffering and longer seek times were more likely to rate the service with a lower score, than the average user. / Mängden videor som streamas över Internet har ökat väsentligt under de senaste årtiondena. För att kunna optimera upplevelsen för de som streamar videor är det viktigt för företagen som erbjuder dessa tjänster att veta hur kundnöjdheten relaterar till de tekniska egenskaperna. Dessa kan inkludera faktorer såsom buffring och starttider. Net Promoter Score (NPS) är ett verktyg som används inom många olika branscher för att mäta kundnöjdhet och lojalitet. Användarna delas in i tre grupper beroende på hur de svarar på en enkätfråga. Detta examensarbete undersöker huruvida det är möjligt att hitta korrelationer mellan kundnöjdhet baserad på de tre användargrupperna från NPS-verktyget och uppmätta tekniska kvaliteter från en streamingtjänst. Efter att inledande informationsvisualiseringar påvisade skillnader mellan live-strömmar och video-on-demand har dessa grupper hanterats separat. Statistisk analys visade att de tre NPS-grupperna inte har några korrelationer med starttiden eller hur länge användarna tittar på videor. Resultatet visade även att användarna som tittar på live-strömmar verkar vara känsligare för lägre tekniska kvaliteter än de som tittar på video-on-demand. Detta kan dock även bero på att de uppmätta tekniska egenskaperna under live-strömmarna generellt är lite lägre. Buffringen och söktiden visade sig ha samband med den uppmätta kundnöjdheten, men flera andra faktorer, såsom det faktiska videoinnehållet, kan också ha en inverkan på användarnas betyg. Användarna som hade upplevt mer buffring och längre söktider var mer benägna att ge tjänsten ett lägre betyg än den genomsnittliga användaren. Net Promoter Score NPS video-on-demand live streams user satisfaction Z-score video streaming quality quality of experience Net Promoter Score NPS video-on-demand livestreams kundnöjdhet Z-test videostreamingkvalitet Media and Communication Technology Medieteknik
4	Railway curve squeal: Statistical analysis of train speed impact on squeal noise Asplund, Ruben January 2024 (has links) No description available. ml operation maintenance railway maintenance railway curve machine learning statistics railway train passenger train x60 squeal noise curve squeal squealing noise squeal wheel squeal squealing programming system development computer engineering data visualization data preprocessing industrial computer systems matlab python vibration vibrations vibration signals signals and systems filtering signal processing computer systems communication system infrastructure technology infrastructure track t-test z-test random forest xgboost feature importance speed detection band-pass filter script yaw angle angle of attack decision tree gbdt filter temperature humidity dew point curve radius cloud accelerometers sensors track rail statistical analysis acoustics sound ai artificial intelligence gradient boosting decision trees curve software development drift underhåll järnvägsunderhåll järnvägskurva maskininlärning statistik järnväg tåg x60 skrikljud snäva kurvor kurvradie kurvskrik hjulskrik programmering systemutveckling datateknik data industriella datorsystem matlab python vibration signaler vibrations signaler signaler och system filtrering signalbehandling datorsystem kommunikationssystem infrastrukturteknik infrastruktur spår t-test z-test random forest Södertälje band-pass filter hastighets detektion attackvinkeln anfallsvinkel IMx SKF temperatur fuktighet daggpunkt accelerometer järnvägskurvskrik tåg hastighetens statistisk analys akustik ljud ai kurva kurvor mjukvaruutveckling artificiell intelligens Infrastructure Engineering Infrastrukturteknik Signal Processing Signalbehandling Communication Systems Kommunikationssystem Computer Systems Datorsystem
5	Electrostaticanalisys the Ras active site Khan, Abdul Kareem 05 March 2009 (has links) La preorganització electrostàtica del centre actiu s'ha postulat com el mecanisme genèric de l'acció dels enzims. Així, alguns residus "estratègics" es disposarien per catalitzar reaccions interaccionant en una forma més forta amb l'estat de transició, baixant d'aquesta manera el valor de l'energia dactivació g cat. S'ha proposat que aquesta preorientació electrostática s'hauria de poder mostrar analitzant l'estabilitat electrostàtica de residus individuals en el centre actiu.Ras es una proteïna essencial de senyalització i actúa com un interruptor cel.lular. Les característiques estructurals de Ras en el seu estat actiu (ON) són diferents de les que té a l'estat inactiu (OFF). En aquesta tesi es duu a terme una anàlisi exhaustiva de l'estabilitat dels residus del centre actiu deRas en l'estat actiu i inactiu. / The electrostatic preorganization of the active site has been put forward as the general framework of action of enzymes. Thus, enzymes would position "strategic" residues in such a way to be prepared to catalyze reactions byinteracting in a stronger way with the transition state, in this way decreasing the activation energy g cat for the catalytic process. It has been proposed thatsuch electrostatic preorientation should be shown by analyzing the electrostatic stability of individual residues in the active site.Ras protein is an essential signaling molecule and functions as a switch in thecell. The structural features of the Ras protein in its active state (ON state) are different than those in its inactive state (OFF state). In this thesis, an exhaustive analysis of the stability of residues in the active and inactive Ras active site is performed. dinàmica centre actiu relacions d'estructura activitat preorganització reorganització estat de transició estat actiu estabilitat electrostàtica interacción proteïna-proteïna test de ranks de Wilcoxon P-loop G1 motif HVR metastability RMSD substrate assisted catalysis sequence alignment beta sheet helix Z-test wilcoxon rank test protein-protein interactions electrostatic stability active state dynamics signal transduction electrostatic stabilization ras effectors guanine exchange factor GTPase-activating proteins quantum mechanics/molecular PDLD/S-LRA X-ray crystallography solvation energy free energy perturbation statistical analysis GTP hydrolysis guanosine diphosphate guanosine triphosphate computer simulation thermodynamics protein conformation electrostatics interruptor II interruptor I llaç P motiu G1 HVR (regions altament variables) metaestabilita RMSD catàlisi assistida pel substrat aliniament de seqüència fulla beta hèlix test Z transducció del senyal estabilització electrostàtica efectors de ras factor de bescamvi de guanina proteïnes activadores de l'activitat mecànica quàntica/mecànica PDLD/S-LRA cristalografia de raigs X energia de solvatació perturbació de l'energia lliure anàlisi estadística hidròlisi de GTP difosfat de guanosina trifosfat de guanosina simulació computacional termodinàmica conformació proteïca electrostàtica switch-I switch-II 537 576

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