Novas tecnologias aplicadas à formação: estudo de caso na agência para a modernização administrativa

Este estudo centra-se na abordagem das novas tecnologias aplicadas à formação em contexto organizacional. Como objetivos pretende-se analisar a importância e a eficácia da formação b-learning, enquanto instrumento de desenvolvimento dos trabalhadores nas Lojas do Cidadão, e perceber de que forma as novas tecnologias de informação e comunicação podem ser uma ferramenta preponderante na formação contínua dos trabalhadores. Utilizou-se a metodologia do estudo de caso – Agência para a Modernização Administrativa – que pretendeu verificar o impacto registado na organização e nos indivíduos, dos processos de formação e das aprendizagens realizadas no período de 2008 a 2012. Para a recolha de informação recorreu-se à entrevista semiestruturada (responsável da formação, formador, formandos). Os resultados sugerem que a implementação da metodologia de formação b-learning, teve um impacto positivo no processo de aprendizagem e de melhoria do desempenho dos que integraram os grupos de formação, tendo permitido à organização fundamentar a criação de um departamento de formação para responder eficazmente às necessidades da mesma.This study focuses on the approach of the new technologies applied to training in the organizational context . As objectives we intend to analyze the importance and effectiveness of b-learning training as a tool for workers’ development in the Citizen Shops, and realize how the new information and communication technologies can be a dominant tool in the continuous training of workers. The method used was the case study – Agency for Administrative Modernisation – in order to verify the impact, between 2008 and 2012, of the training and learning process on the organization and on the individuals. For the collection of information appealed to the semi-structured interview (head of training , trainer, trainees). The results suggest that the implementation of the b-learning training methodology had a positive impact on the learning process and on the performance of the training groups, allowing the organization to support the creation of a training department to respond effectively to its needs.info:eu-repo/semantics/publishedVersio

Seaweed polysaccharide relieves hexavalent chromium-induced gut microbial homeostasis

Heavy metals released in the environment pose a huge threat to soil and water quality, food safety and public health. Additionally, humans and other mammals may also be directly exposed to heavy metals or exposed to heavy metals through the food chain, which seriously threatens the health of animals and humans. Chromium, especially hexavalent chromium [Cr (VI)], as a common heavy metal, has been shown to cause serious environmental pollution as well as intestinal damage. Thus, increasing research is devoted to finding drugs to mitigate the negative health effects of hexavalent chromium exposure. Seaweed polysaccharides have been demonstrated to have many pharmacological effects, but whether it can alleviate gut microbial dysbiosis caused by hexavalent chromium exposure has not been well characterized. Here, we hypothesized that seaweed polysaccharides could alleviate hexavalent chromium exposure-induced poor health in mice. Mice in Cr and seaweed polysaccharide treatment group was compulsively receive K2Cr2O7. At the end of the experiment, all mice were euthanized, and colon contents were collected for DNA sequencing analysis. Results showed that seaweed polysaccharide administration can restore the gut microbial dysbiosis and the reduction of gut microbial diversity caused by hexavalent chromium exposure in mice. Hexavalent chromium exposure also caused significant changes in the gut microbial composition of mice, including an increase in some pathogenic bacteria and a decrease in beneficial bacteria. However, seaweed polysaccharides administration could ameliorate the composition of gut microbiota. In conclusion, this study showed that seaweed polysaccharides can restore the negative effects of hexavalent chromium exposure in mice, including gut microbial dysbiosis. Meanwhile, this research also lays the foundation for the application of seaweed polysaccharides

Mechanical Behavior Analysis of Fully Grouted Ground Anchor in Soft-Hard Alternating Stratum

Assuming that the ground anchor is connected with the rock–soil of the sidewall by a tangential linear spring, the load transfer model of the fully grouted ground anchor is established by using the spring element method, and the analytical solutions of the displacement, axial force, and shear stress distribution of the ground anchor in the upper and lower parallel strata foundation and sandwich foundation are given, respectively. Corresponding to the above two kinds of alternating strata, the mechanical behavior of the vertical fully grouted ground anchor in the soft–hard alternating stratum is analyzed using the four conditions in Case 1 and the six conditions in Case 2, respectively. Through the case analysis, it can be concluded that the mechanical behavior of the round anchor is greatly affected by the shear modulus of the shallow stratum, and is less affected by the shear modulus of the deep stratum. The depth of the stratum interface and the thickness of the interlayer have some influence on the mechanical behavior of the whole ground anchor but have little influence on the displacement and axial force distribution of the ground anchor. This paper has certain guidance and reference significance for the design of vertical fully grouted ground anchors in the alternating strata

Mechanical Behavior Analysis of Fully Grouted Bolts under Axial Cyclic Load

Fully grouted bolts are widely used in engineering. In order to deeply understand the load-transfer mechanism of a fully grouted bolt, it is necessary to analyze and study its mechanical behavior under axial cyclic load. First of all, based on the idea of discretization and the force balance analysis of each mass spring element, this study proposes a method for analyzing the force of the bolt—the spring element method. Second, the load-transfer model of the fully grouted bolt is established by using the spring element method, assuming that the bolt and the sidewall rock and soil are connected by tangential linear springs. The analytical solutions for the displacement, axial force, and shear-stress distribution of the bolt before and after the damage of the sidewall spring are given. It is found that the analysis results of the analytical model proposed in this paper have a great relationship with λ, which is the square root of the ratio of sidewall spring stiffness k′u to bolt stiffness ku. Further analysis found that this model is more suitable for the two working conditions of λ ≈ 0 and λ ≈ 1, and the relationship between sidewall spring stiffness k′u and pull-out stiffness K of the bolt was established under these two working conditions. Finally, the rationality and accuracy of the analytical model proposed in this study are verified by an analysis of two typical test cases under the two working conditions of λ ≈ 0 and λ ≈ 1

Mechanical behavior analysis of fully grouted bolt under axial load

Abstract Based on the idea of discretization and the force balance analysis of each mass spring element, a spring-element analysis method for bolt is proposed. By analyzing the mechanical behavior of the bond interface of the fully grouted bolt, three coupling models of the bond interface, the slider model, the spring model and the spring-slider model, are proposed. Using the spring-element method, five load transfer models, namely the slider model, the spring model, the modified spring model, the spring-pulled slider model, and the spring-slider model, were deduced. And get the bolt displacement distribution function, axial force distribution function and shear stress distribution function under each model. The five proposed models are verified, analyzed and discussed by using the pull-out test of the smooth steel bolt and the threaded steel bolt. It is verified by experiments that this study is helpful to comprehensively understand the mechanical behavior of fully grouted bolts under axial load. The proposed spring element analysis method is simple and easy to understand and the results are reasonable

Mechanical Behavior Analysis of Fully Grouted Bolts under Axial Cyclic Load

Fully grouted bolts are widely used in engineering. In order to deeply understand the load-transfer mechanism of a fully grouted bolt, it is necessary to analyze and study its mechanical behavior under axial cyclic load. First of all, based on the idea of discretization and the force balance analysis of each mass spring element, this study proposes a method for analyzing the force of the bolt—the spring element method. Second, the load-transfer model of the fully grouted bolt is established by using the spring element method, assuming that the bolt and the sidewall rock and soil are connected by tangential linear springs. The analytical solutions for the displacement, axial force, and shear-stress distribution of the bolt before and after the damage of the sidewall spring are given. It is found that the analysis results of the analytical model proposed in this paper have a great relationship with λ, which is the square root of the ratio of sidewall spring stiffness k′u to bolt stiffness ku. Further analysis found that this model is more suitable for the two working conditions of λ ≈ 0 and λ ≈ 1, and the relationship between sidewall spring stiffness k′u and pull-out stiffness K of the bolt was established under these two working conditions. Finally, the rationality and accuracy of the analytical model proposed in this study are verified by an analysis of two typical test cases under the two working conditions of λ ≈ 0 and λ ≈ 1

Integrating Map Services and Location-based Services for Geo-Referenced Individual Data Collection

With the rapid advance of location-based services (LBS) and online map services, it is now more feasible than before to collect the geo-referenced individual level data. However, privacy is always an issue whenever personal location is traced and recorded. This paper proposes a reactive location-based service to collect and process individual location data by different privacy policies. The reactive LBS provides user with an active pull mode to collect his/her location information. With different privacy policies, the user can enter his/her current address manually to the server or automatically generated by the LBS location provider. In order to gain the accurate reconstruction of individuals' activity-travel patterns with considerable space-time details, the LBS server invokes an online map service to georeference the location data and to derive the route between locations. In this paper, a household's daily activity survey scenario is showed in Beijing city. ? 2008 IEEE.EI

A peer-to-peer approach to Geospatial Web Services discovery

Geospatial Web Services are data-oriented services, which include a variety of complex data models and metadata. Discovering the appreciate services with related geospatial datasets among a large number of available ones is a key task in the Geospatial Web Services domain. This paper proposes a peer-to-peer (P2P) based approach for discovering geospatial Web Services. We characterize the geospatial Web Services profile as a set of keywords including the metadata attributes, the minimum bounding rectangle (MBR) and the QoS parameters. Differing from the keywords based P2P Web Services discovery approaches, we use the MBR information to cluster and index the services into a kind of Peer R+ tree. With the tree, a P2P system can support complex queries containing partial keywords and spatial querying. The approach has been used in the Beijing Spatial Data Infrastructure project. We implement an peer-to-peer geospatial Web Services discovery system prototype that shows our approach facilitates complex service queries that contains spatial keywords. ? 2006 ACM.EI