The research journals and publications are great source of knowledge produced by the virtue of hard work done by researchers. Several digital libraries have been maintaining the records of such research publications in order for general people and other researchers to find and study the previous work done in the research field they are interested in. In order to make the search criteria effective and easier, all of these digital libraries keep a record/database to store the meta-data of the publications. These meta-data records are generally well design to keep the vital records of the publications/articles, which has the potential to give information about the researcher, their research activities, and hence the competence profile. This thesis work is a study and search of method for building the competence profile of researchers’ base on the records of their publications in the well-known digital libraries. The publications of researchers publish in different publication houses, so, in order to make a complete profile, the data from several of these heterogeneous digital libraries sources have to be integrated semantically. Several of the semantic technologies were studied in order to investigate the challenges of integration of the heterogeneous sources and modeling the researchers’ competence profile .An approach of on-demand profile creation was chosen where user of system could enter some basic name detail of the researcher whose profile is to be created. In this thesis work, Design Science Research methodology was used as the method for research work and to complement this research method with a working artifact, scrum- an agile software development methodology was used to develop a competence profile system as proof of concept.

Estudou-se o efeito da alimentação, do jejum e da realimentação sobre o perfil metabólico e ruminal de bovinos em crescimento. Para tal, empregaram-se 12 garrotes mestiços, com cerca de 300 kg, obtendo-se amostras de sangue e fluido ruminal no decorrer dos seguintes períodos: 11 horas de alimentação normal (período pós-prandial), 48 horas consecutivas de jejum alimentar, seguida de 48 horas de realimentação. Comparado com o período pós-prandial, o jejum provocou as seguintes modificações: moderada hipoglicemia; acompanhada por marcante lipólise, detectada pelo aumento nos teores plasmáticos de ácidos graxos livres; ausência de lipidose hepática, visto que não ocorreram alterações na atividade da aspartato aminotransferase e nos teores de colesterol sérico; discreta cetogênese, confirmada pela pequena elevação de β-hidroxibutirato; e certo grau de proteólise, verificado pelo aumento dos teores de uréia sérica e da excreção urinária de uréia. Nesse mesmo período ocorreu uma ligeira hipovolemia, caracterizada pelo aumento no déficit de volume intravascular. Este quadro metabólico verificado durante o jejum foi completamente revertido durante a realimentação, com exceção da proteólise que foi temporariamente maior. O jejum provocou notável modificação no perfil ruminal: intensa elevação no pH do fluido; diminuição marcante na flora e fauna que foi detectada, respectivamente, pela menor quantidade de matéria seca bacteriana e expressiva redução no número de protozoários; notória elevação no tempo de redução do azul de metileno; queda no índice de excreção urinária de alantoína, contudo sem alteração no índice de excreção urinária de ácido úrico. A realimentação promoveu completa e rápida recuperação das variáveis do perfil ruminal, com exceção do número de protozoários, que embora tenha se elevado, não atingiu os valores basais. A prova de redução de azul de metileno apresentou alta correlação positiva (r = 0,89) com a quantidade de matéria seca bacteriana. Devido à facilidade, rapidez e praticidade de ser conduzida e a alta sensibilidade indica-se a prova de redução do azul de metileno como teste de eleição na análise do perfil ruminal. / The effect of feeding, fasting and refeeding on metabolic and ruminal profile of steers was studied. Thus, blood and ruminal samples were drawn of twelve 300 kg crossbred steers throughout three different periods: 11 hour during normal feeding, 48 hour of fasting followed by the same time of refeeding. The fasting caused a moderate hypoglycemia, followed by marked lipolysis, detected by the high plasma free fatty acid concentration, but there was no evidence of hepatic lipidosis, since there were no changes in the activity of aspartate aminotransferase and serum cholesterol levels; a discrete ketogenesis occurred as there was a slight increase in the β-hidroxibutirate concentration; proteolysis were detected by the increase of serum and urinary excretion of urea. During the fasting the animals developed a slight hypovolemia detected by the increase of the plasma volume deficit. These metabolic changes were completely reversed during the refeeding, but the proteolysis had a temporary increase. The fasting gave rise to deeply changes in the ruminal profile, such as: increase in the rumen pH, reduction the number of rumen protozoa and bacteria, as seen by the low bacteria dry matter; increase in the methylene blue reduction time and lowering of the urinary excretion of allantoin, but no changes were seen in the uric acid urinary level. The refeeding made the rumen status return to normal, but the protozoa number that despite a slight increase was very far away from the basal standard. There was a high (r = 0.89) positive correlation between the methylene blue reduction time and the rumen bacteria dry matter. Due to the easiness, promptness, feasibility, and its high sensibility the methylene blue reduction method should be used to check the ruminal profile.

Made available in DSpace on 2016-04-28T20:19:15Z (GMT). No. of bitstreams: 1 2006- Sandra Souto da Silva.pdf: 328635 bytes, checksum: f811c2c71698ab18de0961c4cd761440 (MD5) Previous issue date: 2006-05-02 / The present study has as main objective to investigate the possible differences between entrepreneurs (franchisees) and intra-entrepreneurs profiles (corporate managers, also asked intrapreneurs), of a distribution company of health s products. The two groups had been compared about to the following Entrepreneurial Behavior Characteristics (EBCs): search of opportunities and initiative; persistence; commitment; requirement of quality and efficiency; following calculated risks; establishment of goals; search of information; planning and systematic control; persuasion and net of contacts; independence and self-confidence, denominated: the EBCs of McClelland. The used methodology was a descriptive case study that used quantitative and qualitative techniques. The differences between the groups concerning the perception of the meaning about entrepreneurs and intrapreneurs also had been studied. The study concluded that there is not a significant difference between the groups about the EBCs. However, it was evidenced that the managers have larger level of quality demand and efficiency' and planning and systematic control', compared to the franchisees. Both groups also do not present significant differences at self noticed entrepreneurship level. The participants of both groups had attributed more meanings to the concept of entrepreneurship than the concept of intrapreneurship, what suggests a better agreement of the first concept. Finally, the managers showed more concepts of entrepreneurship meanings and intrapreneurship. / O presente estudo tem como objetivo principal investigar as poss?veis diferen?as de perfil entre empreendedores (propriet?rios de franquias) e intra-empreendedores (gestores corporativos), de uma empresa distribuidora de produtos para sa?de. Os dois grupos foram comparados quanto ?s seguintes Caracter?sticas Comportamentais Empreendedoras (CCEs): busca de oportunidades e iniciativa; persist?ncia; comprometimento; exig?ncia de qualidade e efici?ncia; correr riscos calculados; estabelecimento de metas; busca de informa??o; planejamento e monitoramento sistem?ticos; persuas?o e rede de contatos; independ?ncia e autoconfian?a, ou seja, as CCEs de McClelland. A metodologia utilizada foi um estudo de caso descritivo, aplicadas t?cnicas quantitativa e qualitativa de an?lise. Foram tamb?m examinadas as diferen?as entre os grupos quanto ? percep??o de seus n?veis de empreendedorismo e os significados de empreendedorismo e intra-empreendedorismo. Conclui-se que os grupos n?o diferem significativamente em rela??o ?s CCE?s. Entretanto, h? uma tend?ncia dos gestores para apresentar maior n?vel de exig?ncia de qualidade e efici?ncia e planejamento e monitoramento sistem?ticos , em compara??o com os franqueados. Os dois grupos tamb?m n?o apresentam diferen?as significativas quanto ao n?vel de empreendedorismo autopercebido. Os participantes de ambos os grupos atribu?ram mais significados ao conceito de empreendedorismo do que ao de intra-empreendedorismo, o que sugere uma maior compreens?o do primeiro conceito. Por fim, os gestores produziram maior n?mero de significados de empreendedorismo e intraempreendedorismo.

Le sevrage tabagique classique, pose toujours problème par son efficacité réduite et le nombre important de rechutes. Cette étude longitudinale se propose de mesurer l'évolution des variations de scores du stress professionnel, de l'anxiété, de la dépression, de l'estime de soi, lors d'un sevrage tabagique mené par les TCC et la sophrologie ainsi que la substitution nicotinique, sans utiliser une prise médicamenteuse, par voie orale, et en donner une solution « sur mesure » à long terme qui essaie d'éviter les rechutes. C'est une étude longitudinale avec un suivi d'une année et 29 séances d'intervention. L'échantillon est composé de 166 personnes, dont 134 fumeurs, fumant entre 5 et 40 cigarettes par jour, dont 102 ont consulté pour sevrage tabagique, individuel ou en groupe. De 166 patients ayant participé à l'étude 17 patients ont abandonné. Cette démarche thérapeutique d'une année est plus efficace avec 95 % de maintien de l'arrêt de cigarette après 1 an que la prise en charge classique.Elle permet le maintien de l'arrêt pour un coût de santé moindre mais impose un suivi plus astreignant de la part des intervenants. Une étude partant des observations pratique et ayant essayé de trouver une base théorique pouvant expliquer les observations pratiques recueillies dans la pratique quotidienne du sevrage tabagique, faite par un médecin urgentiste, tabacologue et sophrologue. / Classic smoking cessation remains a continuous challenge, both with regard to is efficiency and in the number of relapses. This longitudinal study was aimed at verifying the evolution of changes in stress, anxiety, depression and self esteem scores during smoking cessation following cognitive behavior therapy (CBT), sophrology and nicotine replacement therapy, without the use of oral medication. The study was conducted with a follow-up of one year and 29 intervention sessions. The population sample consisted of 166 individuals, including 134 smokers, smoking between 5 and 40 cigarettes per day, of which 102 were admitted for smoking cessation, individually or as a group. The above therapeutic approach, based on "smoker's profile self regulation therapy", was found to be more effective than the classical smoking cessation approach, with 95% maintenance of smoking cessation after one year. Moreover, it allowed maintenance with lower healthcare costs, although necessitated a more onerous monitoring by smoking cessation specialists. This study seems to confirm that a long sustained follow up smoking cessation, based on targeted "smoker's profile" is more effective than any other approach. Several identical studies on more cases are necessary to confirm or to infirm this tobacco cessation way efficiency.

Orientador: José Luiz Pereira / Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos / Made available in DSpace on 2018-08-17T10:58:52Z (GMT). No. of bitstreams: 1 Martins_IsabelaMateus_M.pdf: 18364444 bytes, checksum: 31989d921c63b7a58bff34af51349106 (MD5) Previous issue date: 2011 / Resumo: Staphylococcus são micro-organismos amplamente distribuídos na natureza, sendo o homem e os animais suas principais fontes. A contaminação cruzada após a pasteurização do leite, especialmente por manipulação inadequada, é apontada como a mais importante forma de contaminação dos derivados do leite por estes patógenos, que são importantes em alimentos devido à sua habilidade de produzir uma grande quantidade de proteínas extracelulares (enterotoxinas) que, se pré-formadas no alimento e ingeridas, causam a intoxicação estafilocócica. Apesar da legislação brasileira (RDC 12/2001, Anvisa) preconizar apenas a contagem de Staphylococcus coagulase positiva, relacionando a produção da coagulase com o risco de produção de enterotoxinas, já foi comprovado que espécies coagulase negativas também são capazes de produzir enterotoxinas nos alimentos. Desta forma, os objetivos deste trabalho foram: i) quantificar e analisar a presença de Staphylococcus coagulase positiva e negativa em 104 amostras de derivados lácteos, sendo 24 de sorvete artesanal, 20 de creme de leite pasteurizado, 20 de patê à base de queijo, 20 de queijo Minas frescal e 20 de queijo Minas meia cura; ii) identificar fenotipicamente as espécies isoladas; iii) avaliar a produção de enterotoxinas clássicas (SEA, SEB, SEC1,2,3, SED e SEE) in vitro pelo sistema VIDAS e relacionar os resultados obtidos com a presença de possíveis genes codificadores destas enterotoxinas, pela aplicação da técnica de PCR. Os valores médios de contagens preliminares nos diferentes grupos de alimentos analisados foram: 5 x 103 UFC/g em sorvete, 2,9 x 105 UFC/g em creme de leite, 6,2 x 103 UFC/g em patê, 6,6 x 105 UFC/g em queijo Minas frescal e 6,4 x 105 UFC/g em queijo Minas meia cura. Do total de isolados, 83,6% (148/177) foram classificados como sendo do gênero Staphylococcus e 16,4% (29/177) como Micrococcus. Staphylococcus foram isolados de 43,3% (45/104) das amostras, sendo detectados em 25 amostras de queijos, em 16 sorvetes, em 3 patês e em apenas 1 amostra de creme de leite. Entre os isolados de Staphylococcus, 74,3% (110/148) eram coagulase negativa e 25,7% (38/148) eram coagulase positiva recuperados apenas nas amostras de queijos. Dos 111 isolados selecionados (27 coagulase positiva e 84 coagulase negativa), foram identificadas 13 espécies através do sistema API-Staph (bioMérieux-SA): S. aureus, S. auricularis, S. caprae, S. chromogenes, S. cohnii ssp cohnii, S. epidermidis, S. hominis, S. hyicus, S. lentus, S. saprophyticus, S. sciuri, S. warneri, S. xylosus. Para a detecção de enterotoxinas estafilocócicas clássicas, foi utilizado o kit (bioMérieux-SA). Dos?imunoenzimático ViDAS SET ¿Staph enterotoxin¿ 111 isolados, apenas um (0,9%) produziu enterotoxina, sendo este identificado como S. aureus, coagulase positiva, isolado a partir de queijo Minas meia cura, cuja contagem foi de 1,9 x 106 UFC/g. Ao contrário do esperado, não foram detectados genes codificadores das 5 enterotoxinas em nunhum dos isolados analisados. Discrepâncias entre resultados de testes fenotípicos e genotípicos para detecção de enterotoxinas são comuns, sendo necessária a realização de outros testes imunológicos e moleculares para confirmação destes resultados. Possíveis justificativas seriam a existência de variações nas sequências dos genes do isolado ou a presença de uma toxina que possui reação imunológica cruzada com as enterotoxinas clássicas. Neste estudo, apesar da quase totalidade dos isolados não terem produzido enterotoxinas clássicas, havia um número bem elevado de Staphylococcus em diversos produtos analisados, não excluindo um possível risco de produção das demais enterotoxinas já descritas e demonstrando a falta de cuidados higiênico-sanitários e de boas práticas durante a produção e comercialização destes alimentos / Abstract: Staphylococcus are microorganisms widespread in nature and humans and animals are their main sources. Cross-contamination after milk pasteurization, caused especially by improper handling, is considered the most recurrent source of dairy products contamination by these pathogens. Staphylococus deserves our close attention due their ability to produce a large amount of extracellular proteins (enterotoxins), that if preformed in food and ingested, cause staphylococcal food poisoning. Although the Brazilian legislation (RDC 12/2001, Anvisa) only recommends coagulase-positive staphylococci count monitoring (relating coagulase production to the risk of enterotoxins production), previous researches showed that coagulase-negative species are also capable of producing enterotoxins in foods. Thus, this research aimed: i) to quantify and analyze the presence of coagulase-positive and coagulase-negative staphylococci from 104 dairy products samples, being: 24 homemade ice cream, 20 pasteurized dairy cream, 20 cheese pate, 20 Minas fresh cheese, and 20 Minas half cured cheese; ii) to identify phenotypically the species; iii) to evaluate the production of classic enterotoxins (SEA, SEB, Sec1, 2.3, SED and SEE) in vitro by using VIDAS system and correlate the results to the presence of possible coding genes of these enterotoxins, applying the PCR technique. The average staphylococcal preliminary count values in different food groups analyzed were: 5 x 103 CFU/g in ice cream, 2,9 x 105 CFU/g in dairy cream, 6,2 x 103 CFU/g in pate, 6,6 x 105 CFU/g in Minas fresh cheese and 6,4 x 105 CFU/g in Minas half cured cheese. From isolated strains, 83,6% (148/177) were classified as genus Staphylococcus and 16,4% (29/177) as Micrococcus. Staphylococcus were isolated from 43,3% (45/104) of samples, being found in 25 cheese samples, in 16 ice creams, in 3 pates and in just one dairy cream sample. Among staphylococcal strains, 74,3% (110/148) were coagulase-negative Staphylococcus and 25,7% (38/148) were coagulase-positive Staphylococcus, being these recovered only from cheeses samples. On 111 selected isolates (27 coagulase-positive and 84 coagulase-negative), were identified 13 staphylococcal species by using API-Staph system (bioMérieux-SA): S. aureus, S. auricularis, S. caprae, S. chromogenes, S. cohnii ssp cohnii, S. epidermidis, S. hominis, S. hyicus, S. lentus, S. saprophyticus, S. sciuri, S. warneri, S. xylosus. For classical staphylococcal enterotoxins detection was used VIDAS SET Staph- Enterotoxin immunoassay kit (bioMérieux-SA). From 111 isolates, just one (0,9%) produced enterotoxin, which was identified as S. aureus, coagulasepositive, isolated from Minas half cured cheese, whose count was 1,9 x 106 CFU/g. Contrary to expectations, no coding genes were present in isolates analyzed. Discrepancies between phenotypic and genotypic results of enterotoxin detection tests are common, requiring the application of other immunological and molecular tests for the confirmation of the results. Possible explanations would be that there are genes sequences variations or another enterotoxin that has immunological cross-reaction with classic enterotoxins. For this research, although the higher number of the isolates did not produce classical enterotoxins, the analyzed samples showed high staphylococcal concentration, that do not exclude a newly described enterotoxins risk production. It also demonstrates the lack of hygiene, health care and good practices during the production and commercialization of dairy products / Mestrado / Mestre em Ciência de Alimentos

Estudou-se o efeito da alimentação, do jejum e da realimentação sobre o perfil metabólico e ruminal de bovinos em crescimento. Para tal, empregaram-se 12 garrotes mestiços, com cerca de 300 kg, obtendo-se amostras de sangue e fluido ruminal no decorrer dos seguintes períodos: 11 horas de alimentação normal (período pós-prandial), 48 horas consecutivas de jejum alimentar, seguida de 48 horas de realimentação. Comparado com o período pós-prandial, o jejum provocou as seguintes modificações: moderada hipoglicemia; acompanhada por marcante lipólise, detectada pelo aumento nos teores plasmáticos de ácidos graxos livres; ausência de lipidose hepática, visto que não ocorreram alterações na atividade da aspartato aminotransferase e nos teores de colesterol sérico; discreta cetogênese, confirmada pela pequena elevação de β-hidroxibutirato; e certo grau de proteólise, verificado pelo aumento dos teores de uréia sérica e da excreção urinária de uréia. Nesse mesmo período ocorreu uma ligeira hipovolemia, caracterizada pelo aumento no déficit de volume intravascular. Este quadro metabólico verificado durante o jejum foi completamente revertido durante a realimentação, com exceção da proteólise que foi temporariamente maior. O jejum provocou notável modificação no perfil ruminal: intensa elevação no pH do fluido; diminuição marcante na flora e fauna que foi detectada, respectivamente, pela menor quantidade de matéria seca bacteriana e expressiva redução no número de protozoários; notória elevação no tempo de redução do azul de metileno; queda no índice de excreção urinária de alantoína, contudo sem alteração no índice de excreção urinária de ácido úrico. A realimentação promoveu completa e rápida recuperação das variáveis do perfil ruminal, com exceção do número de protozoários, que embora tenha se elevado, não atingiu os valores basais. A prova de redução de azul de metileno apresentou alta correlação positiva (r = 0,89) com a quantidade de matéria seca bacteriana. Devido à facilidade, rapidez e praticidade de ser conduzida e a alta sensibilidade indica-se a prova de redução do azul de metileno como teste de eleição na análise do perfil ruminal. / The effect of feeding, fasting and refeeding on metabolic and ruminal profile of steers was studied. Thus, blood and ruminal samples were drawn of twelve 300 kg crossbred steers throughout three different periods: 11 hour during normal feeding, 48 hour of fasting followed by the same time of refeeding. The fasting caused a moderate hypoglycemia, followed by marked lipolysis, detected by the high plasma free fatty acid concentration, but there was no evidence of hepatic lipidosis, since there were no changes in the activity of aspartate aminotransferase and serum cholesterol levels; a discrete ketogenesis occurred as there was a slight increase in the β-hidroxibutirate concentration; proteolysis were detected by the increase of serum and urinary excretion of urea. During the fasting the animals developed a slight hypovolemia detected by the increase of the plasma volume deficit. These metabolic changes were completely reversed during the refeeding, but the proteolysis had a temporary increase. The fasting gave rise to deeply changes in the ruminal profile, such as: increase in the rumen pH, reduction the number of rumen protozoa and bacteria, as seen by the low bacteria dry matter; increase in the methylene blue reduction time and lowering of the urinary excretion of allantoin, but no changes were seen in the uric acid urinary level. The refeeding made the rumen status return to normal, but the protozoa number that despite a slight increase was very far away from the basal standard. There was a high (r = 0.89) positive correlation between the methylene blue reduction time and the rumen bacteria dry matter. Due to the easiness, promptness, feasibility, and its high sensibility the methylene blue reduction method should be used to check the ruminal profile.

Addressing Quality of Service and specification of quality attributes has been gaining a growing importance in the software engineering area. The research presented in this study investigates different approaches to specification of Quality of Service. UML profile for Quality of Service is one of the standards of the Quality of Service specification and is described in the QoS specification context. The research aim of this thesis is the evaluation of the UML profile for Quality of Service against the following criteria: expressiveness, reusability, understandability, applicability and tool support, as well as further comparison of the profile with other Quality of Service specification languages. To perform that, several tasks and activities were conducted, such as a survey on different QoS specification languages, an examination of the UML profile for Quality of Service, the formulation of the evaluation criteria, and the appliance of the criteria in the evaluation and comparison processes. This study is performed from the perspective of readers and users of the profile that are not UML experts but have sufficient knowledge of UML in terms of software systems analysis and design. The context of the UML profile and Quality of Service aspects include basic concepts of the UML 2.0 and Quality of Service which will be described along the thesis. The main contribution of the thesis is the evaluation of the UML profile for Quality of Service against a set of criteria, followed by explanations on the contents of the profile and how Quality of Service is specified within it. The presented comparison of the UML profile and other Quality of Service specification languages could be the basis for a user to decide what language to use in a particular situation. This study can be comprehended as a starting point for further evaluation of the UML profile and its comparison with other quality specification languages.

This graduation thesis addresses questions to thermal profile measurement of PBGA package during solder reflow process. The first part of thesis deals with problem of reflow process and reliability factors of solder joint connection. Next part analyses operation principles of thermocouples that are commonly used for temperature measurement. The experimental part deals with methods of thermocouples fixation during tests and measurements of dummy PBGA package. There was realized a method of dummy PBGA thermal profiles measurement and sample testing with and without simulated thermal load on PBGA package. The end of thesis concerns on possibilities of thermal profiles evaluation by using PWI method and thermal profile optimization of reflow process.

This master's thesis is focused on measurement of the velocity profiles in liquids using ultrasound. The thesis describes two executed measurements both in the channel with free surface, both in the square shaped pipe. In the introductory part this work deals with clarifying the theoretical fundamentals associated with the measurement method UVP such as the Doppler effect, the speed of sound in the medium or the acoustic impedance of the environment. The next part describes the execution of the velocity profile measurement in the channel with free surface described and there is also the description of the results achieved during this measurement. In the last part the thesis deals with the measurement of the velocity profile in the square shaped pipe. There is also the comparison between the measured velocity profiles and the velocity profiles calculated using the analytical formula. In the conclusion there is the evaluation of achieved results.

Thesis advisor: Scott C. Seider / Engagement in sociopolitical activism, such as protesting, has important implications for youth of color and for the communities in which they live (Ballard & Ozer, 2016; Ginwright, 2010; Hope & Spencer, 2017). Critical Consciousness (CC; Freire, 1970/1998; Watts et al., 2011) and Youth Sociopolitical Development Theory (Youth SPD; Watts & Flanagan, 2007) are two prominent frameworks for investigating sociopolitical activism among youth of color. Although both frameworks position motivation as one of the key factors influencing youth activism, motivation is narrowly defined as a single construct—one’s sense of efficacy to effect change. Using motivation constructs from two established motivation frameworks, Self-Determination Theory (SDT; Deci & Ryan, 2008; Ryan & Deci, 2000) and Regulatory Focus Theory (RFT; Higgins, 1997), this dissertation investigated the multidimensional nature of motivation in relation to Black and Latinx adolescents’ commitment to activism. Drawing from a longitudinal data set examining Black and Latinx adolescents’ civic development over four years of high school (N = 733), I used group differential approaches (latent profile analysis, latent profile transition analysis, and latent profile moderation) to (a) identify distinct combinations of motivations among Black and Latinx high school students in ninth, tenth, and twelfth grade, (b) assess whether and the extent to which adolescents changed profile membership across high school, (c) examine motivation profiles in tenth grade as predictors of commitment to activism in twelfth grade, and (d) examine motivation profiles in tenth grade as moderators of the relation between adolescents’ analysis of social problems in tenth grade and their commitment to activism addressing these problems in twelfth grade (controlling for their initial commitment to activism). I identified two motivation profiles in ninth grade, four motivation profiles in tenth grade, and four motivation profiles in twelfth grade. At both tenth and twelfth grade, I named the motivation profiles: “Low Motivation,” “High Motivation,” “Moderate Motivation, Low Autonomy,” and “Moderate Motivation, High Autonomy.” At both time points, the “Low Motivation” profile comprised the smallest proportion of the sample and the “Moderate Motivation, High Autonomy” profile comprised the largest proportion of the sample. Most youth shifted to a different motivation profile over time. Adolescents in the “High Motivation” profile at the end of tenth grade reported the highest average commitment to activism at the end of twelfth grade; however, this number was only statistically significantly higher than the “Moderate Motivation, Low Autonomy” profile. Contrary to expectations, youths’ social analysis in tenth grade was not predictive of their commitment to activism in twelfth grade; thus, there was no latent profile moderation in relation to social analysis and commitment to activism. Instead, I did find evidence that motivation profile membership moderated the relation between commitment to activism at the end of tenth grade on commitment to activism at the end of twelfth grade. Overall, results suggest that adolescents’ motivation is multidimensional and incredibly dynamic. Future CC/Youth SPD research should consider investigating a more complete set of established motivation constructs in relation to youths’ sociopolitical development. / Thesis (PhD) — Boston College, 2022. / Submitted to: Boston College. Lynch School of Education. / Discipline: Counseling, Developmental and Educational Psychology.