A cobertura da terra dentro do contexto das unidades de relevo em três bacias da ecorregião do Planalto Central

Dissertação (mestrado)—Universidade de Brasília, Faculdade de Planaltina , Programa de Pós-Graduação em Ciências Ambientais, 2018.O relevo plano e contínuo do Cerrado foi fundamental para políticas de ocupação que concorrem com a vegetação natural, tornando necessário desenvolver abordagens que conciliam os interesses humanos com os processos naturais. Assim, é necessário a caracterização do relevo e suas influências na ocupação humana. Nesse contexto, o objetivo deste trabalho foi avaliar as relações entre o relevo e a ocupação humana. Foram comparados parâmetros geomorfométricos dos relevos de três sub-bacias, pertencentes a uma região hidrográfica do Planalto Central (Tocantins/Araguaia, São Francisco e Paraná), através de imagens digitais da Shuttle Radar Topography Mission (SRTM). Para a delimitação das unidades de relevo, foi gerada a composição colorida nos canais RGB (altitude, declividade e curvatura mínima) e realizou-se avaliações entre as unidades de relevo equivalentes nas diferentes sub-bacias através do teste de Kruskal-Wallis. As unidades de relevo foram utilizadas como limite natural para a descrição do uso e cobertura da terra através da base digital do Projeto TerraClass Cerrado. Evidenciou-se que a altitude, declividade e curvatura minima apresentaram diferenças significativas entre as bacias. Nos relevos planos, tais como as Chapadas, Rampas de Colúvio e as Mesas predominaram a agricultura e pastagem. Nos relevos dissecados, como as Frente de Recuo Erosivo, Colinas e Vales predominaram as coberturas naturais e pastagens. Os estudos integrados são importantes para definir estratégias de proteção e manutenção dos ecossistemas naturais e dos recursos hídricos. Esses resultados evidenciam que a ocupação humana é organizada pelas formas do relevo.The flat and continuous relief of the Cerrado was fundamental to occupying policies that compete with natural vegetation, making it necessary to develop approaches that reconcile human interests with natural processes. Thus, it is necessary to characterize the relief and its influences on human occupation. Therefore, the objective of this study was to evaluate the relationship between relief and human occupation. Geomorphometric parameters of the reliefs of three sub-basins, belonging to a hydrographic region of the Planalto Central (Tocantins / Araguaia, São Francisco, and Paraná), were compared using Shuttle Radar Topography Mission (SRTM) digital images. For the delimitation of the relief units, the color composition was generated in the RGB channels (elevation, slope, and minimum curvature) and evaluations were performed between the equivalent relief units in the different sub-basins through the Kruskal-Wallis test. Relief units were used as a natural boundary for the description of land use and coverage through the TerraClass Project's digital base. It was evidenced that the elevation, slope and minimum curvature presented significant difference between the basins. In flat reliefs such as the Chapadas, Rampas de Colúvio and the Mesas predominated agriculture and pasture. In the dissected reliefs, such as the Frente de Recuo Erosivo, Ambientes Colinosos, and Vales, natural coverings and pastures predominated. Integrated studies are important in defining strategies for the protection and maintenance of natural ecosystems and water resources. These results show that human occupation is limited by relief

Certificação de qualidade versus qualidade da informação financeira: estudo para empresas portuguesas

Com o estudo pretende-se analisar se as empresas que têm implementado um Sistema de Gestão da Qualidade e certificadas segundo a norma da International Organization for Standardization (ISO) 9001, apresentam também uma boa qualidade da informação financeira. Utiliza-se um modelo logit para testar a relação pretendida, tendo como variável dependente a variável binária relativa à certificação de qualidade e como principal variável explicativa a qualidade da informação financeira. Com base nos resultados obtidos foi possível verificar a existência de uma relação positiva e estatisticamente significativa entre certificação de qualidade das empresas e a sua qualidade da informação financeira.info:eu-repo/semantics/publishedVersio

Education in the learning society: an overview over the educational potential of the internet

Neste artigo vamos problematizar os novos modelos de aprendizagem que nasceram no seio da teia global de informação que chamamos Internet. De facto, mais do que simples meios de comunicação ou acesso à informação, as TIC e a internet são ferramentas tanto cognitivas como sociais que, através de um dispositivo ligado à rede, deixam ao alcance de todos espaços ilimitados e uma gestão flexível do tempo, com tudo o que de positivo ou negativo essas circunstâncias acarretam. Equacionaremos a mudança subtil no paradigma de comunicação da Internet da Web 1.0 para a Web 2.0, em que o utilizador passa de consumidor a produtor da informação. Finalizamos apresentando algumas ferramentas da Web 2.0 e, com base na investigação já realizada, discutiremos as potencialidades que oferecem à educação.In this paper we discuss the new learning models that emerged in the global network of the internet. More than communication channels or means to access the information, ICT and Internet can be powerful cognitive and social tools that allow for the creation and management of new learning environments where space and time are flexible and personalized. We also analyse the subtle change in the Internet paradigm from stage 1.0 to 2.0 generation where the consumer becomes an information producer. Some Web 2.0 tools are presented and, based upon research, we discuss their potential for education.CIE

Determinants of nursing homes performance: the case of portuguese Santas Casas da Misericórdia

This study aims to evaluate the economic efficiency of Nursing Homes owned by 96 Santas Casas da Misericórdia (SCM) and the determinants that influenced their efficiency in 2012 and 2013. The SCM are the oldest non-profit entities, which belong to Third Sector in Portugal, provide this social response and receive significant financial contributions annually from the state. The study is developed in two stages. In the first stage, the efficiency scores were calculated through the non-parametric DEA technique. In the second stage, Tobit regression is used to verify the effect of certain organizational variables on efficiency, namely the number of users and existence of Nursing Home chains. The results of the DEA model show that the efficiency average is 81.9%, and only 10 out of 96 Nursing Homes are efficient. Tobit regression shows that the number of users has a positive effect on the efficiency of Nursing Homes, whereas the existence of Nursing Home chains affects their efficiency negatively.info:eu-repo/semantics/publishedVersio

Engineering Education and Technological / Professional Learning

Engineering business is a demanding and dynamic market, which universities must understand and accompany. Being aware of the market needs is a step forward in training successful professionals. The presented works contributed to enhance the present discussion addressing different topics like emergent technologies, professional, scientific and social competences or projects that allow students to perform the first contacts with the real world. The view of students, teachers and company supervisors are considered.info:eu-repo/semantics/publishedVersio

Engineering education addressing professional challenges

Engineering profession is very demanding because of the different competences young graduates need to master. The exponential growth in technology, even though very beneficial to all, tends to worsen their needs of expertise, having to endlessly update themselves. Engineering education has been addressing these issues, hoping to contribute to better teaching practices more aligned with engineering professional world. Students must develop the necessary competences from the beginning of their education and engage into actively learning the subjects. Three aspects of this problematic are presented in this special session: educational experiences, students’ learning and professional challengesThe chairs of this track session would like to thank the members of its Scientific Committee and all contributing authors for their efforts in enhancing the discussion upon this thematic. The authors would also like to acknowledge the financial support provided by the Foundation for Science and Technology Project, FCT UID/EQU/04730/2013.info:eu-repo/semantics/publishedVersio