2,538 research outputs found

    Empregabilidade percebida e auto-eficácia na transição para o trabalho: o papel da adaptabilidade de carreira - estudo com finalistas do ensino superior

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    A complexidade do mundo do trabalho, associada à sua permanente instabilidade, vem desafiar as formas tradicionais com que os estudantes encaravam a transição para vida profissional. O presente estudo teve como principal objectivo analisar o papel da adaptabilidade de carreira na auto-eficácia e na empregabilidade percebida, numa amostra de 94 estudantes universitários (25 homens e 69 mulheres), situando-se a sua média de idades nos 23.87 anos (DP = 3.74 anos; amplitude 20-45). Os resultados encontrados sugerem que a adaptabilidade prediz a auto-eficácia na adaptação ao trabalho, sobretudo através da dimensão confiança, e a empregabilidade geral, interna e externa. Por último, são discutidas as implicações dos resultados para a intervenção vocacional no âmbito do apoio aos processos de transição para o mundo do trabalho, junto de estudantes universitários

    Un relato sobre la ciudadanía y su expresión en la ciudad de Barranquilla. Los comicios para alcalde y concejo distrital en los años 2003, 2007 y 2011

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    Existe en la actualidad amplia discusión en torno a la ciudadanía y su significado en las democracias contemporáneas, esto, en razón a que existe una variación respecto a la forma de concebir este sistema político. Hoy, la prioridad es el fomento y consolidación del modelo participativo de democracia y, en ese sentido, la reivindicación de la ciudadanía es uno de los pilares base para su materialización. Dentro de ésta investigación se exponen las diversas propuestas que a lo largo de la historia se han construido para conceptualizar a la ciudadanía, así como los cuestionamientos que hoy se hacen a todas esas explicaciones tradicionales, como una forma de dar respuesta a las nuevas necesidades de las sociedades. Se acoge en la investigación una de las formas de ciudadanía, esta es la ciudadanía como ejercicio, para identificar el nivel de ejercicio de la ciudadanía, como condición política, de los ciudadanos de Barranquilla a partir de la participación política electoral, en las elecciones de alcalde y concejo distrital en los comicios de los años 2003, 2007 y 2011. Para ello se accedió a los datos históricos sobre las elecciones que conserva la Registraduría Nacional del Estado Civil y nos apoyamos en las encuestas de percepción ciudadana Barranquilla como vamos y la de la Red de ciudades como vamos, además de la literatura especializada

    DISENTANGLING THE THERAPIST'S CONTRIBUTION TO THE THERAPEUTIC RELATIONSHIP: ATTACHMENT STYLE, COUNTERTRANSFERENCE, AND THE REAL RELATIONSHIP.

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    The current study investigated the relations among therapists' attachment, therapists' countertransference behaviors, and the real relationship therapists established with a client, as perceived by the therapists and their supervisors. Data were gathered from 32 therapist-supervisor dyads. Therapists completed measures of attachment and of the real relationship. Supervisors completed measures on therapist's countertransference behaviors and the real relationship. Real relationship and countertransference measures were completed based on the work of the therapist with an identified client. Results showed that therapists' attachment security was positively and significantly related to therapists' ratings of the real relationship, but not to supervisors' ratings. Negative countertransference was related to supervisors' ratings of strength of the real relationship, but not to counselors' ratings. Contrary to expectations, positive countertransference was not related to supervisors' ratings of the real relationship. Finally, attachment security was not related to countertransference behaviors

    Forecasting sales and transactions of fast-food stores: a proof of concept

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    Internship Report presented as the partial requirement for obtaining a Master's degree in Data Science and Advanced Analytics, specialization in Data ScienceAs time goes on, more and more clients look for solutions to their data-related problems. During a 9-month internship at the Portuguese consulting company Noesis, a request was presented by a customer that wished to improve the forecasting capabilities of their fast-food chain, on sales and transactions, for four different distribution channels, and globally. Following a data analytics approach, hundreds of time series were examined, external variables were added, and two algorithms were used - ARIMA and Facebook’s Prophet. Both models were evaluated, and as each of them performed better in different segments, a hybrid system was implemented, successfully completing the task at hand. Based on the results, future improvements and recommendations were also identified

    O despertar do ductus no ensino e na prática do desenho

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    A presente revisão propõe uma visão do conceito de ductus aplicado à aprendizagem e ao ensino do Desenho. Por ductus pode-se entender o elemento que reúne na acção de desenhar singularidade e aprendizagem, isto é, ainda que os conhecimentos sejam direcionados ao grupo, é de modo individual que são interiorizados e interpretados. Ao longo deste texto, emergem duas ideias simultaneamente antagónicas e complementares: a singularidade e o coletivo. É numa aprendizagem significativa, construída pelo próprio aluno, que é possível o desenvolvimento de um modo particular de gerir e aplicar esses mesmos conhecimentos, numa permanente busca de si. Ductus surge então como a idiossincrasia do Desenho, que emerge através de movimentos automáticos. O desenvolvimento do ductus no ensino do Desenho remete-nos para a importância do papel do professor no percurso de aprendizagem de cada aluno, procurando uma relação mais próxima que permita a auscultação de cada elemento e um apoio e acompanhamento permanentes, tendo em vista a sua form ação integral, que sobrepuja os limites do Currículo.This review aims at presenting a viewpoint of the concept of ductus applied to teaching and learning of drawing. Ductus can be understood as an element that synthesises learning and idiosyncrasy in the act of drawing. Although knowledge is transmitted to the group, knowledge is incorporate within oneself, it is made subjective or personal. Thus, the ideas of uniqueness and collective emerge. It is through significant learning experiences that the student builds knowledge and ability to apply it. Ductus applied in the teaching of drawing highlights the importance of the teacher’s role in the student's learning path

    A matemática na escola primária : um olhar sobre o ensino da matemática nas escolas portuguesas desde o final do século XIX até à década de 70 do século XX

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    Tese de mestrado em Ciências da Educação (História da Educação), apresentada à Universidade de Lisboa através da Faculdade de Psicologia e de Ciências da Educação, 2008A presente dissertação centra-se no estudo do ensino da matemática na escola primária. Pretende-se inferir continuidades e rupturas ao nível dos conteúdos, dos tipos de materiais didácticos utilizados e das correntes pedagógicas que presidiram às opções programáticas e à implementação do ensino elementar de matemática, num limite cronológico que tem o seu início nos finais do século XIX e se prolonga até à década de setenta do século XX. O corpus documental utilizado é constituído pelas Colecções Oficiais de Legislação Portuguesa, pelos programas de Matemática do ensino primário e pela imprensa pedagógica, em particular as publicações Escola Portuguesa e Educação Nacional, cujos períodos de publicação coincidem com os limites cronológicos da investigação. O estudo dos programas do ensino primário dá a conhecer que o termo Matemática' começa a ser usado nos programas para o ano lectivo 1974/1975, sendo até aí dominante a disciplina de Aritmética, à qual se vieram juntar, progressivamente, o Sistema métrico e a Geometria. Este acréscimo de saberes é acompanhado por uma evolução no tipo de materiais didácticos utilizados, a qual é motivada por concepções pedagógicas que circulam internacionalmente e chegam a Portugal, sendo o seu acolhimento e implementação influenciados pelos regimes políticos em vigor. A necessidade de concretizar os conteúdos matemáticos foi objecto de uma crescente preocupação por parte dos professores, sendo curioso verificar como ocorre a evolução do tipo de materiais sugeridos ou utilizados.The present dissertation focuses in the study of the Mathematical teaching in the elementary schools. It is my intention to infer the continuities and ruptures to the level of contents, teaching materials in use and the main Pedagogical guidelines that led the Program options and the introduction of the basic mathematical teaching within a chronological limit, which begins in the end of the nineteenth century and extends itself until the 70s of the twentieth century. The followed corpus documental is formed by Colecções Oficiais de Legislação Portuguesa, by the Mathematical programs for elementary teaching and by the Pedagogical Press, in particular the publications Escola Portuguesa e Educação Nacional, whose publishing periods match the chronological boundaries of the enquiry. The study of the elementary teaching programs introduces the term Mathematic' as being used in first place in the school year 1974/1975, being until then the prevailing subject Arithmetic, later on, and gradually were added the Metric system and Geometry. This increase of knowledge led to the evolution of the teaching materials in use, due to pedagogical conceptions used around the world, being their approach and implementation strongly influenced by the government in power. The need to develop the mathematical contents was object of a greater concern by teachers, specially the evolution of the suggested or used materials

    Engineered MRI nanoprobes based on superparamagnetic iron oxide nanoparticles

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    This project aimed to engineer new T2 MRI contrast agents for cell labeling based on formulations containing monodisperse iron oxide magnetic nanoparticles (MNP) coated with natural and synthetic polymers. Monodisperse MNP capped with hydrophobic ligands were synthesized by a thermal decomposition method, and further stabilized in aqueous media with citric acid or meso-2,3-dimercaptosuccinic acid (DMSA) through a ligand exchange reaction. Hydrophilic MNP-DMSA, with optimal hydrodynamic size distribution, colloidal stability and magnetic properties, were used for further functionalization with different coating materials. A covalent coupling strategy was devised to bind the biopolymer gum Arabic (GA) onto MNPDMSA and produce an efficient contrast agent, which enhanced cellular uptake in human colorectal carcinoma cells (HCT116 cell line) compared to uncoated MNP-DMSA. A similar protocol was employed to coat MNP-DMSA with a novel biopolymer produced by a biotechnological process, the exopolysaccharide (EPS) Fucopol. Similar to MNP-DMSA-GA, MNP-DMSA-EPS improved cellular uptake in HCT116 cells compared to MNP-DMSA. However, MNP-DMSA-EPS were particularly efficient towards the neural stem/progenitor cell line ReNcell VM, for which a better iron dose-dependent MRI contrast enhancement was obtained at low iron concentrations and short incubation times. A combination of synthetic and biological coating materials was also explored in this project, to design a dynamic tumortargeting nanoprobe activated by the acidic pH of tumors. The pH-dependent affinity pair neutravidin/iminobiotin, was combined in a multilayer architecture with the synthetic polymers poy-L-lysine and poly(ethylene glycol) and yielded an efficient MRI nanoprobe with ability to distinguish cells cultured in acidic pH conditions form cells cultured in physiological pH conditions

    Checklist para o transporte intra-hospitalar seguro do doente crítico: a scoping review

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    Transporting critically ill patients is has a set of risks that may jeopardize their safety. Knowing the risks associated with intrahospitalar transport of critically ill patients is essential to improving patient safety. For the sake of improving patient safety, was chosen to approach it as an intrahospitalar transport checklist, as the literature describes it as a practical and simple way to increase safety. Objective: Map available scientific evidence regarding aspects of a checklist that ensure the safety of critically ill patients in intrahospitalar transport. Material and Method: A scoping review was performed following the methodology proposed by The Joanna Briggs Institute in databases using the EBSCOhost and B-on search engines. Conducted research in Portuguese, English, and Spanish. Selected free full text articles, with no time limit. Inclusion criteria: adult/elderly critically ill patient, intrahospital transport, a checklist and patient safety. Results: Included 7 articles for analysis. Most verification requests that ensure the safety of critical patients on intrahospitalar transport concern the transport preparation phase, in which patient is monitored was the most mentioned aspect. From the post-transportation phase, checklist aspects are only available in 3 of 7 articles Conclusion: All studies address aspects that improve the safety of critically ill patients in intrahospitalar transport and are likely to be included in the checklist. There is no unanimity as to which aspects to include in the checklist.O transporte do doente crítico acarreta um conjunto de riscos para a sua segurança. Conhecer os riscos associados ao transporte intra-hospitalar do doente crítico é essencial para melhorar a segurança do mesmo. Optou-se por abordar a checklist de transporte intra-hospitalar, uma vez que a literatura a descreve como uma forma prática e simples de aumentar a segurança. Objetivo: Mapear a evidência científica disponível referente aos aspetos de uma checklist que garantem a segurança do doente crítico no transporte intra-hospitalar. Material e Método: Realizou-se uma scoping review recorrendo à metodologia do The Joanna Briggs Institute, nas bases de dados utilizando os motores de busca EBSCOhost e B-on. Realizada pesquisa em Português, Inglês e Espanhol. Selecionados artigos free full text, sem limite temporal. Critérios de inclusão: o doente crítico adulto/idoso, o transporte intra-hospitalar, a checklist e a segurança do doente. Resultados: Foram incluídos 7 artigos. A maioria dos aspetos da checklist que garantem a segurança do doente crítico no transporte intra-hospitalar, dizem respeito à fase da preparação do transporte, na qual o aspeto mais mencionado é a monitorização do doente. Da fase posterior ao transporte, aspetos da checklist apenas são mencionados em 3 dos 7 artigos. Conclusão: Todos os estudos abordam aspetos que são passíveis de incluir em checklist e melhoram a segurança do doente. Não existe unanimidade quanto aos aspetos a incluir na checklist do transporte intra-hospitalar.info:eu-repo/semantics/publishedVersio

    Direct mixed-quantum/classical computations of k(T). An analysis of the use of different coordinate systems

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    We have obtained three mixed-quantum/classical schemes to directly calculate thermal rate constants through the evaluation of flux-flux correlation function. These schemes are appropriate to treat three-atom reactions, but could be easily extended to larger systems. One of the schemes uses normal mode coordinates, defined at the transition state. The others use hyperspherical coordinates. The proposed algorithms were applied to the H + H2 → H2 + H reaction, and their accuracy was tested by comparison with full-quantum results. In this article, we present the derivation of the three mixed-quantum/classical schemes, describe the details of their implementation, and discuss the quality of their results.Fil: Clavero, Esteban Dario. Universidad Nacional de Quilmes. Centro de Estudios e Investigación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Palma, Juliana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Centro de Estudios e Investigación; Argentin

    A comparison between reduced dimensionality and mixed quantum/classical evaluations of k(T) using the flux-flux correlation function formalism

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    Rate constants for the planar H + HD → H2 + D reaction with J = 0 have been calculated employing reduced dimensionality, mixed quantum/classical and full quantum computations based on the flux-flux correlation function formalism. It has been found that reduced dimensionality and mixed quantum/classical calculations afford quite similar results. This suggests that, for direct reactions occurring in the gas phase, there is no advantage in using the more involved mixed quantum/classical approach. On the other hand, the comparison between approximate and accurate results indicates that both, reduced dimensionality and mixed quantum/classical approaches, work well at medium and high temperatures. As expected, they fail at very low temperatures where tunnelling prevails.Fil: Clavero, Esteban Dario. Universidad Nacional de Quilmes. Centro de Estudios e Investigación; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Palma, Juliana Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Centro de Estudios e Investigación; Argentin
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