990 resultados para Android (Electronic resource)


Relevância:

80.00% 80.00%

Publicador:

Relevância:

80.00% 80.00%

Publicador:

Relevância:

80.00% 80.00%

Publicador:

Relevância:

80.00% 80.00%

Publicador:

Relevância:

80.00% 80.00%

Publicador:

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Knowledge Exchange has funded the translation a recommended practice of the National Information Standard Organization (NISO) called SERU: Shared Electronic Resource Understanding. The SERU wording offers publishers and libraries the opportunity to save both the time and the costs associated with a negotiated and signed licence agreement by agreeing to operate within a framework of shared understanding and good faith. The statements in the document provide a set of common understandings for publishers and libraries to reference as an alternative to a formal licence when conducting business. The SERU wording has been translated in three languages of the Knowledge Exchange partners. German organisations are recommended to make use of the English wording

Relevância:

80.00% 80.00%

Publicador:

Resumo:

Recibido 4 de abril de 2011 • Aceptado 26 de agosto de 2011 • Corregido 13 de octubre de 2011      El estudio del que da cuenta este artículo tuvo como objetivo diagnosticar la necesidad de un software educativo sobre el proceso de segmentación en animales para promover el aprendizaje creativo de los estudiantes en el curso Embriología comparada, de la Universidad Pedagógica Experimental Libertador en Barquisimeto, Estado Lara, Venezuela. Se apoyó en una investigación de campo de naturaleza descriptiva, los sujetos en estudio fueron 32 estudiantes cursantes de la asignatura durante el lapso académico I-2009. Se diseñó y aplicó un cuestionario en formato tipo Likert, el cual fue validado a través del juicio de expertos y su confiabilidad determinada con el Coeficiente Alfa de Cronbach. Los datos fueron recolectados y posteriormente analizados mediante la estadística descriptiva, se construyeron tablas de frecuencias y porcentajes para la presentación de los mismos. Los resultados revelan que existe, entre los estudiantes de Embriología comparada, una muy alta necesidad de contar con un software educativo que permita su aprendizaje creativo, un recurso en formato electrónico adaptado a las nuevas tecnologías de la información y la comunicación.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

OBJECTIVE: To describe the electronic medical databases used in antiretroviral therapy (ART) programmes in lower-income countries and assess the measures such programmes employ to maintain and improve data quality and reduce the loss of patients to follow-up. METHODS: In 15 countries of Africa, South America and Asia, a survey was conducted from December 2006 to February 2007 on the use of electronic medical record systems in ART programmes. Patients enrolled in the sites at the time of the survey but not seen during the previous 12 months were considered lost to follow-up. The quality of the data was assessed by computing the percentage of missing key variables (age, sex, clinical stage of HIV infection, CD4+ lymphocyte count and year of ART initiation). Associations between site characteristics (such as number of staff members dedicated to data management), measures to reduce loss to follow-up (such as the presence of staff dedicated to tracing patients) and data quality and loss to follow-up were analysed using multivariate logit models. FINDINGS: Twenty-one sites that together provided ART to 50 060 patients were included (median number of patients per site: 1000; interquartile range, IQR: 72-19 320). Eighteen sites (86%) used an electronic database for medical record-keeping; 15 (83%) such sites relied on software intended for personal or small business use. The median percentage of missing data for key variables per site was 10.9% (IQR: 2.0-18.9%) and declined with training in data management (odds ratio, OR: 0.58; 95% confidence interval, CI: 0.37-0.90) and weekly hours spent by a clerk on the database per 100 patients on ART (OR: 0.95; 95% CI: 0.90-0.99). About 10 weekly hours per 100 patients on ART were required to reduce missing data for key variables to below 10%. The median percentage of patients lost to follow-up 1 year after starting ART was 8.5% (IQR: 4.2-19.7%). Strategies to reduce loss to follow-up included outreach teams, community-based organizations and checking death registry data. Implementation of all three strategies substantially reduced losses to follow-up (OR: 0.17; 95% CI: 0.15-0.20). CONCLUSION: The quality of the data collected and the retention of patients in ART treatment programmes are unsatisfactory for many sites involved in the scale-up of ART in resource-limited settings, mainly because of insufficient staff trained to manage data and trace patients lost to follow-up.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

Firms have embraced electronic commerce as a means of doing business, either because they see it as a way to improve efficiency, grow market share, expand into new markets, or because they view it as essential for survival. Recent research in the United States provides some evidence that the market does value investments in electronic commerce. Following research that suggests that, in certain circumstances, the market values noninnovative investments as well as innovative investments in new products, we partition electronic commerce investment project announcements into innovative and noninnovative to determine whether there are excess returns associated with these types of announcements. Apart from our overall results being consistent with the United States findings that the market values investments in electronic commerce projects, we also find that noninnovative investments are perceived as more valuable to the firm than innovative investments. On average, the market expects innovative investments to earn a return commensurate with their risk. We conclude that innovative electronic commerce projects are most likely seen by the capital market as easily replicable, and consequently have little, if any, competitive advantage period. On the other hand, we conclude from the noninnovative investment results that these types of investments are seen as being compatible with a firm's assets-in-place, in particular, its information technology capabilities, a view consistent with the resource-based view of the firm.

Relevância:

40.00% 40.00%

Publicador:

Resumo:

Our understanding of the nature of competitive advantage has not been helped by a tendency for theorists to adopt a unitary position, suggesting, for example, that advantage is industry based or resource based. In examining the nature of competitive advantage in an electronic business (e-business) environment this paper adopts a contingency perspective. Several intriguing questions emerge. Do 'new economy' companies have different resource profiles to 'old economy' companies? Are the patterns of resource development and accumulation different? Are attained advantages less sustainable for e-businesses? These are the kinds of themes examined in this paper. The literature on competitive advantage is reviewed as are the challenges posed by the recent changes in the business environment.Two broad sets of firms are identified as emerging out of the e-business shake up and the resource profiles of these firms are discussed. Several research propositions are advanced and the implications for research and practice are discussed.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Trabalho Final de Mestrado para a obtenção do grau de Mestre em Engenharia Informática e de Computadores

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Dissertação apresentada na Faculdade de Ciências e Tecnologia da Universidade Nova de Lisboa para obtenção do grau de Mestre em Engenharia e Gestão Industrial

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Background and Aims The males and females of many dioecious plant species differ from one another in important life-history traits, such as their size. If male and female reproductive functions draw on different resources, for example, one should expect males and females to display different allocation strategies as they grow. Importantly, these strategies may differ not only between the two sexes, but also between plants of different age and therefore size. Results are presented from an experiment that asks whether males and females of Mercurialis annua, an annual plant with indeterminate growth, differ over time in their allocation of two potentially limiting resources (carbon and nitrogen) to vegetative (below-and above-ground) and reproductive tissues.Methods Comparisons were made of the temporal patterns of biomass allocation to shoots, roots and reproduction and the nitrogen content in the leaves between the sexes of M. annua by harvesting plants of each sex after growth over different periods of time.Key Results and Conclusions Males and females differed in their temporal patterns of allocation. Males allocated more to reproduction than females at early stages, but this trend was reversed at later stages. Importantly, males allocated proportionally more of their biomass towards roots at later stages, but the roots of females were larger in absolute terms. The study points to the important role played by both the timing of resource deployment and the relative versus absolute sizes of the sinks and sources in sexual dimorphism of an annual plant.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Type 2 diabetes mellitus (T2DM) is a major disease affecting nearly 280 million people worldwide. Whilst the pathophysiological mechanisms leading to disease are poorly understood, dysfunction of the insulin-producing pancreatic beta-cells is key event for disease development. Monitoring the gene expression profiles of pancreatic beta-cells under several genetic or chemical perturbations has shed light on genes and pathways involved in T2DM. The EuroDia database has been established to build a unique collection of gene expression measurements performed on beta-cells of three organisms, namely human, mouse and rat. The Gene Expression Data Analysis Interface (GEDAI) has been developed to support this database. The quality of each dataset is assessed by a series of quality control procedures to detect putative hybridization outliers. The system integrates a web interface to several standard analysis functions from R/Bioconductor to identify differentially expressed genes and pathways. It also allows the combination of multiple experiments performed on different array platforms of the same technology. The design of this system enables each user to rapidly design a custom analysis pipeline and thus produce their own list of genes and pathways. Raw and normalized data can be downloaded for each experiment. The flexible engine of this database (GEDAI) is currently used to handle gene expression data from several laboratory-run projects dealing with different organisms and platforms. Database URL: http://eurodia.vital-it.ch.