Uso de dramatização com gravação de vídeo para o desenvolvimento da competência da entrevista em estudantes de psicologia

The research is a teaching innovation experience through a simulation strategy, role play, little used in university teaching. The purpose was to verify if role play with video recording is an effective strategy for acquiring interviewing skills, and explore if it helps the development of meaningful learning in students. The method considered a mixed type investigation and a pre-experimental design of a single measurement at the end. The pedagogical intervention was conducted in the Work Psychology course for four months. The main strategy used was role-playing. Thirteen students participated; they were enrolled in this course. After the intervention, to estimate the impact of the experience, an evaluation was made through three instruments: a meaningful learning scale from Guirao-Goris et al. (2007), a questionnaire of didactic innovation from Bartlett y Morrow (2001), and a rubric to evaluate the achievement of the skill. Data were descriptively analyzed. The results show a favorable assessment from the students towards the strategy used to achieve effective learning, perception from the students of significant learning achievement, and an evaluation from the professor endorsing the achievement of learning the interviewing skill.La investigación es una experiencia de innovación docente a través de una estrategia de simulación, juego de roles, poco usada en la docencia universitaria. El propósito fue verificar si el juego de roles con grabación de video es una estrategia efectiva para la adquisición de la competencia de entrevistar y explorar si este favorece el desarrollo de aprendizaje significativo en el estudiantado. El método consideró una investigación de tipo mixta y un diseño pre-experimental de una sola medición al final. La intervención pedagógica fue realizada en una asignatura de Psicología Laboral durante un periodo de 4 meses. El juego de roles fue la estrategia protagonista. Participaron 13 estudiantes que conformaban el curso. Posterior a la intervención, se realizó una evaluación para estimar el impacto de la experiencia a través de tres instrumentos: Escala de aprendizaje significativo, de Guirao-Goris et al. (2007); Cuestionario de Innovación didáctica, de Bartlett y Morrow (2001), y una Rúbrica para evaluar el logro la competencia. Se analizaron descriptivamente los datos. Los resultados evidencian, en el estudiantado, una valoración favorable de la estrategia usada para lograr aprendizajes efectivos y una percepción de logro de aprendizaje significativo y, en el docente, una evaluación que avala el logro del aprendizaje de la competencia de entrevista.Esta pesquisa é uma experiência de ensino da inovação através de uma estratégia de simulação, dramatização pouco utilizada no ensino universitário. O objetivo foi verificar se a dramatização com gravação de vídeo é uma estratégia eficaz para adquirir a competência de entrevistar, e explorar se favorece o desenvolvimento da aprendizagem significativa nos alunos. O método considerou uma investigação de tipo misto e um projeto pré experimental de uma única medição no final. A intervenção pedagógica foi realizada em um tema de Psicologia do Trabalho durante um período de 4 meses. A dramatização foi a principal estratégia. Os 13 alunos que compõem o curso participaram. Após a intervenção, foi feita uma avaliação para estimar o impacto da experiência através de três instrumentos: Escala de aprendizagem significativa por Guirao-Goris et al. (2007); Questionário de Inovação didática de Bartlett y Morrow (2001) e uma Rubrica para avaliar a conquista da competição. Os dados foram analisados descritivamente. Os resultados mostram uma avaliação favorável por parte dos alunos da estratégia utilizada para alcançar uma aprendizagem efetiva; uma percepção nos alunos de uma aprendizagem significativa e uma avaliação do professor que endossa a aprendizagem por meio de entrevistas

Low CD4+ T Cell Counts among African HIV-1 Infected Subjects with Group B KIR Haplotypes in the Absence of Specific Inhibitory KIR Ligands

Natural killer (NK) cells are regulated by interactions between polymorphic killer immunoglobulin-like receptors (KIR) and human leukocyte antigens (HLA). Genotypic combinations of KIR3DS1/L1 and HLA Bw4-80I were previously shown to influence HIV-1 disease progression, however other KIR genes have not been well studied. In this study, we analyzed the influence of all activating and inhibitory KIR, in association with the known HLA inhibitory KIR ligands, on markers of disease progression in a West African population of therapy-naïve HIV-1 infected subjects. We observed a significant association between carriage of a group B KIR haplotype and lower CD4+ T cell counts, with an additional effect for KIR3DS1 within the frame of this haplotype. In contrast, we found that individuals carrying genes for the inhibitory KIR ligands HLA-Bw4 as well as HLA-C1 showed significantly higher CD4+ T cell counts. These associations were independent from the viral load and from individual HIV-1 protective HLA alleles. Our data suggest that group B KIR haplotypes and lack of specific inhibitory KIR ligand genes, genotypes considered to favor NK cell activation, are predictive of HIV-1 disease progression

Iberoamerican Reviews

Reseñas iberoamericanasIberoamerican Review

Three models for operations planning in a supply chain context

The rapid growth of firms worldwide causes that relationships in supply chains become more complex, the competition between firms become stronger and customer ask for more demanding products and services. All these changes trigger that a firm looks for opportunities to get more from their scarce resources or to use resources that are beyond its direct control. Thus, a firm can achieve competitive advantages by setting partnerships with other supply chains in order to increase its production capacity, by adapting its operations and pricing strategies to the requirements of the market, and by differentiating between customers according to necessities and willingness to pay for its offered products. We start by studying how firms with similar supply chain roles can collaborate in their operations. Through this collaboration, the firms can mutually benefit from the synergies of pooling operations. A successful collaboration should be efficient in reducing the global cost of the firms. Nevertheless, the willingness of each firm to collaborate may also depend on the fairness of the global cost allocation. In order to guide joint operations, we propose a novel approach that gives priority to the firm that tends to benefit less from the collaboration. In particular, our approach balances the global cost reduction and the inequalities of allocating such cost. Moreover, when analyzing the effect of the uncertainty on the collaboration, our approach shows a high efficiency in reducing risk in comparison to other approaches. We continue by studying how a firm can coordinate its pricing strategy and production and inventory decisions in order to compete with other firms in terms of the prices offered to the customers. We propose a framework for simultaneously planning prices and operations of a firm. We model the operations of the firms as a Lot sizing problem, so computing equilibrium between the prices becomes a time demanding task. We reduce significantly the computational time by providing bounds for the profits that firms can achieve by selecting a pricing strategy. Also, we show the convenience for the firms of using dynamic pricing strategy instead of static pricing strategy, and we show the negative effects that may arise when increasing production capacities. We also study how a firm can gain from differentiating the demand of their customers based on profits and manufacturing requirements. Our study is motivated by the case of a firm that faces two types of demand: on the one hand there are the socalled regular orders that have a relatively long lead time; on the other hand there are urgent orders, whose delay is much shorter but their margins are higher. We study the order acceptance problem for a firm that serves two classes of demand over an infinite horizon. The firm has to decide whether to accept a regular order (or equivalently how much capacity to set aside for urgent orders) in order to maximize its profit. We formulate this problem as a multi-dimensional Markovian Decision Process. We propose a family of approximate formulations to reduce the dimension of the state space via aggregation. We show how our approach can be used to compute bounds on the profit associated with the optimal order acceptance policy. Finally, we show that the value of revenue management is commensurate with the operational flexibility of the firm.(ECGE - Sciences économiques et de gestion) -- UCL, 201

Jumping the hurdles for collaboration: fairness in operations pooling in the absence of transfer payments

Independent firms may be interested in collaborative alliances in order to reduce their costs and risks, among others benefits. Particularly in operations, different firms can gain from economies of scale by pooling their production resources. Even though there may be a significant reduction of the overall cost, the success of the partnership may generally depend on the fairness of the agreement. With this in mind, the firms can utilize transfer payments with the aim to achieve a balanced allocation of benefits. The implementation of such payments, however, could be difficult in practice, because of the presence of legal constraints or additional contracts that make such agreements more complicated. Therefore, the partners should jointly plan operations as to deal with the trade-off between the efficiency and the fairness. We propose a novel methodology to guide joint operations based on the Rawls’ theory of justice, such that we prioritize improving the firm that tends to benefit less from the collaboration. When comparing the quality of such approach with other notions of fairness, we pay particular attention to the effect of the uncertainty on the collaboration. We prove that agreements based on basic notions of fairness have a positive impact on the risk reduction of the firms. Furthermore, our numerical results show that the firms can reduce even more their risk when the agreement is based on more advanced notions of fairness. In particular, our proposed methodology outperforms other approaches of collaboration in terms of risk, while the efficiency is not significantly damaged

Implantación de CRM en Empresa 2B

Tesis (Ingeniero de Ejecución en Gestión Informática)El trabajo de colaboración profesional se realizó en la empresa 2B. Esta empresa fue formada a fines del año 2005 por 2 profesionales jóvenes. La empresa se dedica al diseño, programación, publicación de páginas web y asesorías en telecomunicaciones. El trabajo se centró en el negocio de la publicación de páginas web, donde se encontró que existe un problema de control y administración de los cobros a clientes. Además se detectó que no existe un historial de clientes, ya que se maneja todo por correo electrónico o por conversaciones de las que no quedan registro. No existe un proceso claro ni una herramienta informática que apoye estas gestiones. Como objetivo se fijo la instalación y puesta en marcha de herramientas informáticas que apoyen el proceso de facturación y relacionamiento con los clientes. Para la implementación se siguió la metodología indicada por el “Project Management Institute (PMI)”, logrando instalar con éxito las aplicaciones “VTIGER” como CRM de apoyo para mantener historial de clientes y contactos y “AccountLab Plus” para apoyar el proceso de facturación y planificación de ingresos en el plazo y costos establecidos. Entre los beneficios inmediatos obtenidos se cuenta el haber ordenado los datos de parte de los clientes de la empresa 2B, recuperando hasta el término de este proyecto más de $1.000.000 en facturación no realizada. Este proceso debe continuar por parte del cliente para regularizar completamente la línea de negocio correspondiente a la publicación de páginas web. Además mediante un análisis FODA se logró establecer las fortalezas y oportunidades que el cliente desconocía. Como resultado esperado, se logró concretar otra fuente de ingresos mediante una oferta de servicios de mantención, instalación y cambio de equipamiento a la empresa Akamai