1,153 research outputs found
Information Literacy (IL) of College Freshmen: Implications for an IL Program in Academic Libraries
Information technology steered the proliferation of information resources in different formats, thus, making available a lot of information choices for the diverse needs of all types of users. To be able to obtain quality resources, the academic libraries play a crucial role in developing the information competencies of college students. This study examined the information literacy of college freshmen using a cognitive test. Scores were analyzed using mean scores, frequency, and percentage. Findings indicate that college freshmen have above average literacy in accessing information, and average in evaluating and using information. Based on these findings, some implications for information literacy programs are derived. These could be used by librarians as their basis in planning and designing information literacy programs that would further develop more advanced information competencies
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A case of atypical disseminated herpes simplex virus 1 with hepatitis in a liver transplant recipient: the need for dermatologic evaluation
Disseminated herpes simplex virus (HSV) is mainly seen in immunocompromised individuals. Atypical lesions can be present in both primary infection and reactivation disease. Compared with the general population, inmunocompromised hosts are at greater risk of increased persistency and severity of clinical manifestations, including severe systemic involvement such as esophagitis, meningitis, and hepatitis. Herein, we report the case of a liver transplant recipient with atypical disseminated herpes simplex virus-1 complicated by HSV-related hepatitis. Dermatological consultation and histological assessment were crucial for a correct diagnosis and treatment
La autoeficacia y la motivación en el trabajo
Referencia de la publicación original: D. de Quijano, S. & Navarro Cid, J. (2000). La autoeficacia y la motivación en el trabajo. Apuntes de Psicología, 18 (1), 159-177.El presente artículo se centra en el estudio de la autoeficacia como constructo significativo para el análisis y evaluación
de la motivación en el trabajo. Sustituye con ventaja el concepto de expectativa de Vroom y ofrece información
útil para el diagnóstico y la intervención en la motivación. Basándose en la Escala de autoeficacia general de Jerusalem
y Schwarzer y su adaptación española realizada por Baesssler y Schwarzer, los autores de este artículo realizaron una
nueva versión de la misma centrada en la autoeficacia general frente al trabajo y la integraron en un instrumento más
complejo para el diagnóstico de la motivación. Se ofrecen resultados de la validez y fiabilidad de la escala, así como de
su funcionamiento en relación al instrumento más complejo en el que se integra.This paper center in the contributions of self-efficacy to the analysis and evaluation of work motivation. It is
argued thet the concept of self-efficacy succesfully replaces Vroom’s concept of expectancy , and offers useful information
for diagnose and intervention in motivation. Authors adapt Baessler and Schwarzer’s Spanish adaptation
of the Jerusalem and Schwarzer’s Scale of General Self-efficacy, to work situations and integrate it in a broader
instrument to motivation diagnose. Validity and rehability data are presented and relations among subscales are
considered
A Methodology to Engineer and Validate Dynamic Multi-level Multi-agent Based Simulations
This article proposes a methodology to model and simulate complex systems,
based on IRM4MLS, a generic agent-based meta-model able to deal with
multi-level systems. This methodology permits the engineering of dynamic
multi-level agent-based models, to represent complex systems over several
scales and domains of interest. Its goal is to simulate a phenomenon using
dynamically the lightest representation to save computer resources without loss
of information. This methodology is based on two mechanisms: (1) the activation
or deactivation of agents representing different domain parts of the same
phenomenon and (2) the aggregation or disaggregation of agents representing the
same phenomenon at different scales.Comment: Presented at 3th International Workshop on Multi-Agent Based
Simulation, Valencia, Spain, 5th June 201
Intercellular ultrafast Ca(2+) wave in vascular smooth muscle cells: numerical and experimental study.
Vascular smooth muscle cells exhibit intercellular Ca(2+) waves in response to local mechanical or KCl stimulation. Recently, a new type of intercellular Ca(2+) wave was observed in vitro in a linear arrangement of smooth muscle cells. The intercellular wave was denominated ultrafast Ca(2+) wave and it was suggested to be the result of the interplay between membrane potential and Ca(2+) dynamics which depended on influx of extracellular Ca(2+), cell membrane depolarization and its intercel- lular propagation. In the present study we measured experimentally the conduction velocity of the membrane depolarization and performed simulations of the ultrafast Ca(2+) wave along coupled smooth muscle cells. Numerical results reproduced a wide spectrum of experimental observations, including Ca(2+) wave velocity, electrotonic membrane depolarization along the network, effects of inhibitors and independence of the Ca(2+) wave speed on the intracellular stores. The numerical data also provided new physiological insights suggesting ranges of crucial model parameters that may be altered experimentally and that could significantly affect wave kinetics allowing the modulation of the wave characteristics experimentally. Numerical and experimental results supported the hypothesis that the propagation of membrane depolarization acts as an intercellular messenger mediating intercellular ultrafast Ca(2+) waves in smooth muscle cells
Membraneless energy conversion and storage using immiscible electrolyte solutions
peer-reviewedBreakthrough alternative technologies are urgently required to alleviate the critical need to decarbonise our energy supply. We showcase non-conventional approaches to battery and solar energy conversion and storage (ECS) system designs that harness key attributes of immiscible electrolyte solutions, especially the membraneless separation of redox active species and ability to electrify certain liquid–liquid interfaces. We critically evaluate the recent development of membraneless redox flow batteries based on biphasic systems, where one redox couple is confined to an immiscible ionic liquid or organic solvent phase, and the other couple to an aqueous phase. Common to all solar ECS devices are the abilities to harvest light, leading to photo-induced charge carrier separation, and separate the products of the photo-reaction, minimising recombination. We summarise recent progress towards achieving this accepted solar ECS design using immiscible electrolyte solutions in photo-ionic cells, to generate redox fuels, and biphasic “batch” water splitting, to generate solar fuels.ACCEPTEDpeer-reviewe
A. Duarte Gomes & Revista Psychologica: Construindo a Psicologia do Trabalho, das Organizações e dos Recursos Humanos em Portugal
The aim of this paper is to analyze the set of contributions of A. Duarte Gomes to the journal Psychologica. Specifically, his co-authors, the impact of his publications on other researchers, and the topics that have been the subject of his interest are analyzed. The search resulted in a total of 17 articles, published between 1991 and 2016, signed by him and in co-authorship. In this journal, A. Duarte Gomes reaches the highest levels of visibility in 2005, with a total of five articles of various kinds. The largest number of publications co-authored in Psychologica was with Leonor Pais and Teresa Rebelo, with five collaborations, and with Carla Carvalho, with four. Focusing on the topics covered in the different articles, it can be observed that A. Duarte Gomes’ scientific interest has focused on the organizational level of analysis, with the most relevant topic being that of organizational culture. The total number of citations received by the analyzed papers is 123, which means 7.2 citations per paper. Four of the articles have been cited in five articles published in JCR/SJR journals. The results have allowed us to empirically verify the role of A. Duarte Gomes building the work and organizational, and personnel psychology in Portugal.O objetivo deste artigo é analisar o conjunto de contribuições de A. Duarte Gomes para a revista Psychologica. Especificamente, os seus co-autores, o impacto das suas publicações noutros investigadores e os tópicos que têm sido alvo do seu interesse. A pesquisa resultou num total de 17 artigos, publicados entre 1991 e 2016, assinados por ele e em co-autoria. Nesta revista, A. Duarte Gomes atinge os mais altos níveis de visibilidade em 2005, com um total de cinco artigos de vários tipos. O maior número de publicações em co-autoria na Psychologica foi com Leonor Pais e Teresa Rebelo, com cinco colaborações, e com Carla Carvalho, com quatro. Centrando-nos nos tópicos abordados nos diferentes artigos, observa-se que os interesses de investigação de A. Duarte Gomes se centraram no nível organizacional de análise, sendo o tema mais relevante o da cultura organizacional. O número total de citações recebidas pelos artigos analisados é 123, o que significa 7,2 citações por artigo. Quatro dos artigos foram citados em cinco artigos publicados em revistas JCR/SJR. Os resultados permitiram verificar empiricamente o papel de A. Duarte Gomes na construção da Psicologia do trabalho, das Organizações e dos recursos humanos em Portugal
Grupos en las organizaciones: herramienta básica para gestionar la incertidumbre y ambigüedad crecientes
El mundo del trabajo y de las organizaciones ha sufrido una transformación fundamental en los últimos años: hay mucha más incertidumbre. La respuesta organizativa a dicha incertidumbre ha sido la de diseñar organizaciones más complejas fundamentadas en el trabajo en equipo. Pero no todas las tareas requieren del trabajo en equipo ni todos los grupos de trabajo son auténticos equipos. En este trabajo repasaremos las investigaciones que venimos realizando para clarificar cómo entender operativamente la incertidumbre de las tareas que ha de hacer el equipo, el nivel de desarrollo que pueden alcanzar los equipos de trabajo y cómo el ajuste entre uno y otro (a mayor incertidumbre en las tareas más necesario su abordaje en equipos) es determinante en la efectividad que dichos equipos consiguen. Ofrecemos también guías para la intervención profesional si el objetivo es diseñar y dirigir equipos de trabajo eficaces
Magnetospheric Accretion in Close Pre-Main-Sequence Binaries
The transfer of matter between a circumbinary disk and a young binary system remains poorly understood, obscuring the interpretation of accretion indicators. To explore the behavior of these indicators in multiple systems, we have performed the first systematic time-domain study of young binaries in the ultraviolet. We obtained far- and near-ultraviolet HST/COS spectra of the young spectroscopic binaries DQ Tau and UZ Tau E. Here we focus on the continuum from 2800 to 3200 Å and on the C iv doublet (λλ1548.19, 1550.77 Å) as accretion diagnostics. Each system was observed over three or four consecutive binary orbits, at phases ~0, 0.2, 0.5, and 0.7. Those observations are complemented by ground-based U-band measurements. Contrary to model predictions, we do not detect any clear correlation between accretion luminosity and phase. Further, we do not detect any correlation between C iv flux and phase. For both stars the appearance of the C iv line is similar to that of single Classical T Tauri Stars (CTTSs), despite the lack of stable long-lived circumstellar disks. However, unlike the case in single CTTSs, the narrow and broad components of the C iv lines are uncorrelated, and we argue that the narrow component is powered by processes other than accretion, such as flares in the stellar magnetospheres and/or enhanced activity in the upper atmosphere. We find that both stars contribute equally to the narrow component C iv flux in DQ Tau, but the primary dominates the narrow component C iv emission in UZ Tau E. The C iv broad component flux is correlated with other accretion indicators, suggesting an accretion origin. However, the line is blueshifted, which is inconsistent with its origin in an infall flow close to the star. It is possible that the complicated geometry of the region, as well as turbulence in the shock region, are responsible for the blueshifted line profiles
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