Daily Use of Energy Management Strategies and Occupational Well-being:The Moderating Role of Job Demands

We examine the relationships among employees’ use of energy management strategies and two occupational well-being outcomes: job satisfaction and emotional exhaustion. Based on conservation of resources theory, it was hypothesized that employees with high job demands would benefit more from using energy management strategies (i.e., including prosocial, organizing, and meaning-related strategies), compared to employees with low job demands. We tested this proposition using a quantitative diary study. Fifty-four employees provided data twice daily across one work week (on average, 7 daily entries). Supporting the hypotheses, prosocial energy management was positively related to job satisfaction. Moreover, employees with high job demands were less emotionally exhausted when using prosocial strategies. Contrary to predictions, when using organizing strategies, employees with low job demands had higher job satisfaction and lower emotional exhaustion. Under high job demands, greater use of organizing strategies was associated with lower job satisfaction and higher emotional exhaustion. Finally, use of meaning-related strategies was associated with higher emotional exhaustion when job demands were low. With this research, we position energy management as part of a resource investment process aimed at maintaining and improving occupational well-being. Our findings show that this resource investment will be more or less effective depending on the type of strategy used and the existing drain on resources (i.e., job demands). This is the first study to examine momentary effects of distinct types of work-related energy management strategies on occupational well-being

Uma an?lise das rela??es de trabalho e estudo no caso da Escola de Educa??o B?sica Druziana Sartori

The present work of conclusion of course was elaborated as a partial requisite of approval in the course of Degree in Social Sciences of the Federal University of the Southern Frontier, and has like subject, an analysis of the relations of work and study in the case of the school of basic education Druziana Sartori . The aim of this study was to investigate and understand the transformations and changes that occur in the lives of adolescents who work and study in high school and how the changes are linked to the family, educational and social contexts to which they belong. The main approaches to study and work in adolescence focused on the positions and notions of the researched students in relation to the institutional scenarios to which they are part, their insertion in the job market and the family and student relationships that take place after this insertion. In order to carry out this research, a qualitative approach was chosen, making use of semi-structured interviews and open questionnaires applied to 10 (ten) students of the Sartori Druze Basic School of Education, located in the municipality of Chapec? - SC, aged 15 ) to 17 (seventeen) years, enrolled in regular education.O presente trabalho de conclus?o de curso foi elaborado como requisito parcial de aprova??o no curso de Licenciatura em Ci?ncias Sociais da Universidade Federal da Fronteira Sul, e tem como tema, uma an?lise das rela??es de trabalho e estudo no caso da Escola de Educa??o B?sica Druziana Sartori. O objetivo deste trabalho foi investigar e compreender as transforma??es e mudan?as que ocorrem na vida dos adolescentes que trabalham e estudam no ensino m?dio e qual a liga??o dessas mudan?as aos contextos familiares, educacionais e sociais ao qual pertencem. As abordagens principais em rela??o ao estudo e trabalho na adolesc?ncia focaram nos posicionamentos e no??es dos estudantes pesquisados em rela??o aos cen?rios institucionais aos quais fazem parte, sua inser??o no mercado de trabalho e as rela??es familiares e estudantis que se desenrolam depois dessa inser??o. Para a realiza??o desta pesquisa optou-se por abordagem qualitativa, fazendo uso de entrevistas semiestruturadas e question?rios abertos aplicados a 10 (dez) estudantes da Escola de Educa??o B?sica Druziana Sartori, localizada no munic?pio de Chapec? ? SC, com faixa et?ria de 15 (quinze) a 17 (dezessete) anos, matriculados no ensino regular

S?ntese de benzamidas N-(3-Organocalcogenil)-2-propin?licas mediada por cul

This work describes the study and development of an efficient methodology to the synthesis of N-(3-(organochalcogenyl)prop-2-yn-1-yl)amides via copper iodidecatalyzed cross-coupling reactions of propargylic amides and diorganyl dichalcogenides, using DMSO as solvent at room temperature, under ambient atmosphere (open flask). The generality of the catalytic system was tested by employing different diorganyl dichalcogenides, including diselenides, ditellurides e disulfides as well as differently substituted propargylic amides. Through this method, it became possible the synthesis of range of N-(3-(organochalcogenyl)prop-2-yn-1- yl)amides (19 examples) in 42 to 87% yields. Moreover, in order to evaluate the synthetic applicability of the obtained compounds, we have explored the potential of the carbon-chalcogen bond as reactive site in palladium-catalyzed Suzuki and Sonogashira type coupling reactions. Through these experiments we were able to obtain new molecules (4 examples) aryl and alkynyl groups bonded to the carbon sp of the propargylic amides in 54 to 82% yieldsEste trabalho relata o estudo e o desenvolvimento de uma metodologia eficiente para a s?ntese de uma s?rie amidas N-(3-(organocalcogenil)prop-2-in-1-?licas), preparadas a partir de rea??es de acoplamento cruzado, catalisadas por iodeto de cobre, entre amidas proparg?licas e dicalcogenetos de diorgano?la, empregando DMSO como solvente, ? temperatura e atmosfera ambiente (tubo de rea??o aberto). A generalidade e a abrang?ncia do sistema catal?tico foram testadas, frente ? utiliza??o de diferentes dicalcogenetos de diorgano?la, incluindo, al?m de disselenetos, diteluretos e dissulfetos diferentemente substitu?dos, bem como diferentes amidas proparg?licas. Atrav?s dessa metodologia, tornou-se poss?vel a obten??o de uma gama de amidas N-(3-(organocalcogenil)prop-2-in-1-?licas) (19 exemplos) com rendimentos que variaram entre 42 a 87%. Al?m disso, a fim de avaliar a aplicabilidade sint?tica dos compostos obtidos, explorou-se o potencial da liga??o carbono-calcog?nio como s?tio reativo em rea??es de acoplamento do tipo Suzuki e Sonogashira, catalisadas por sais de pal?dio. Atrav?s destes experimentos foi poss?vel a obten??o de novas mol?culas (4 exemplos), contendo grupos ar?licos e alquin?licos ligados ao carbono sp das amidas proparg?licas, em rendimentos de variam de 54 a 82%

Melhoria na converg?ncia do algoritmo Q-Learning na aplica??o de sistemas tutores inteligentes

O uso sistemas computacionais como complemento ou substitui??o da sala de aula ? cada vez mais comum na educa??o e os Sistemas Tutores Inteligentes (STIs) s?o uma dessas alternativas. Portanto ? fundamental desenvolver STIs capazes tanto de ensinar quanto aprender informa??es relevantes sobre o aluno atrav?s de t?cnicas de intelig?ncia artificial. Esse aprendizado acontece por meio da intera??o direta entre o STI e o aluno que ? geralmente demorada. Esta disserta??o apresenta a inser??o da metaheur?sticas Lista Tabu e GRASP com o objetivo de acelerar esse aprendizado. Para avaliar o desempenho dessa modifica??o, foi desenvolvido um simulador de STI. Nesse sistema, foram realizadas simula??es computacionais para comparar o desempenho da tradicional pol?tica de explora??o aleat?ria e as metaheur?sticas propostas Lista Tabu e GRASP. Os resultados obtidos atrav?s dessas simula??es e os testes estat?sticos aplicados indicam fortemente que a introdu??o de meta-heur?sticas adequadas melhoram o desempenho do algoritmo de aprendizado em STIs.Disserta??o (Mestrado Profissional) ? Programa de P?s-Gradua??o em Educa??o, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2016.Using computer systems as a complement or replacement for the classroom experience is an increasingly common practice in education and Intelligent Tutoring Systems (ITS) are one of these alternatives. Therefore, it is crucial to develop ITS that are capable of both teaching and learning relevant information about the student through artificial intelligence techniques. This learning process occurs by means of direct, and generally slow, interaction between the ITS and the student. This dissertation presents the insertion of meta-heuristic Tabu search and GRASP with the purpose of accelera ting learning. An ITS simulator was developed to evaluate the performance of this change. Computer simulations were conducted in order to compare the performance of traditional randomized search methods with the meta-heuristic Tabu search. Results obtained from these simulations and statistical tests strongly indicate that the introduction of meta-heuristics in exploration policy improves the performance of the learning algorithm in ITS

“Geo-Indoor” Design of an indoor navigation app to help elderly people to navigate in buildings

International audienc

Daily Use of Energy Management Strategies and Occupational Well-being: The Moderating Role of Job Demands

We examine the relationships among employees’ use of energy management strategies and two occupational well-being outcomes: job satisfaction and emotional exhaustion. Based on conservation of resources theory, it was hypothesized that employees with high job demands would benefit more from using energy management strategies (i.e., including prosocial, organizing, and meaning-related strategies), compared to employees with low job demands. We tested this proposition using a quantitative diary study. Fifty-four employees provided data twice daily across one work week (on average, 7 daily entries). Supporting the hypotheses, prosocial energy management was positively related to job satisfaction. Moreover, employees with high job demands were less emotionally exhausted when using prosocial strategies. Contrary to predictions, when using organizing strategies, employees with low job demands had higher job satisfaction and lower emotional exhaustion. Under high job demands, greater use of organizing strategies was associated with lower job satisfaction and higher emotional exhaustion. Finally, use of meaning-related strategies was associated with higher emotional exhaustion when job demands were low. With this research, we position energy management as part of a resource investment process aimed at maintaining and improving occupational well-being. Our findings show that this resource investment will be more or less effective depending on the type of strategy used and the existing drain on resources (i.e., job demands). This is the first study to examine momentary effects of distinct types of work-related energy management strategies on occupational well-being

INFLUÊNCIA DA LUZ UV - C NA BIOPRODUÇÃO DE COMPOSTOS FENÓLICOS EM CULTURA DE CALOS DE Cereus peruvianus Mill.

Cereus peruvianus Mill. é nativo de regiões áridas e apresenta aplicações farmacêuticas e alimentícias. A cultura de calos representa uma alternativa biotecnológica para obtenção de compostos biologicamente ativos. A utilização de elicitores é uma ferramenta para a modulação metabólica vegetal, visando a melhora na produção destes compostos. Desta forma, o objetivo deste trabalho foi determinar compostos fenólicos e atividade antioxidante dos extratos e frações obtidos dos calos de C. peruvianus submetidos a diferentes tempos de exposição a UV- C. Os calos foram expostos a UV- C por diferentes tempos 10 a 60 min e controle negativo sem exposição. Após foram sub- cultivados em meio MS e incubados a 30 ºC por 45 dias sob fotoperíodo de 16 h. Após o cultivo foram realizadas extração por Soxhlet (S) EtOH 70% e maceração (M) MeOH, a partir destes foi avaliado o conteúdo de compostos fenólicos nos extratos resultantes e atividade antioxidante contra DPPH. Os resultados mostraram que a elicitação com UV- C por 20 min,apresentou médias superiores de compostos fenólicos totais,no método de maceração foi de 406,58 μg de EAG/mg, seguido do método de Soxhlet 86,72μg de EAG/mg, corraborando com os resultados encontrados com a atividade antioxidante com CE50 8,15 mg/mL para UV- C 20 (M-FD) e de 48,96mg/mL com o UV- C 20 (S). A elicitação com UV- C em 20 min melhorou a produção de compostos fenólicos alterando o metabolismo dos calos por mecanismo de defesa celular, contribuindo com a melhora da atividade antioxidante