814 resultados para online discussion environments


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This article details an approach to teaching entrepreneurship to Higher National Diploma (HND) students that combines lecture-based and experiential learning processes to increase student learning, comprehension, and entrepreneurial skills. A UK university redesigned an entrepreneurship course to have students design and implement business plans for a pop-up shop and an event in the local community, while working closely with instructors and outside stakeholders. The lectures used in the lessons were designed to complement the enterprise activities and be immediately applied in group work settings. Data was collected from student reflections and analyzed against instructor reflections to highlight both the success and challenges of this approach, as well as any areas of dissonance between student and instructor observations. While literature on the benefits of active and experiential learning processes are highlighted in the literature, this article examines these teaching methods specifically in a HND context, an area in which research on the benefits of these teaching methods for developing entrepreneurial students and for developing students prepared for undergraduate education has been limited.

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The use of remote sensing for monitoring of submerged aquatic vegetation (SAV) in fluvial environments has been limited by the spatial and spectral resolution of available image data. The absorption of light in water also complicates the use of common image analysis methods. This paper presents the results of a study that uses very high resolution (VHR) image data, collected with a Near Infrared sensitive DSLR camera, to map the distribution of SAV species for three sites along the Desselse Nete, a lowland river in Flanders, Belgium. Plant species, including Ranunculus aquatilis L., Callitriche obtusangula Le Gall, Potamogeton natans L., Sparganium emersum L. and Potamogeton crispus L., were classified from the data using Object-Based Image Analysis (OBIA) and expert knowledge. A classification rule set based on a combination of both spectral and structural image variation (e.g. texture and shape) was developed for images from two sites. A comparison of the classifications with manually delineated ground truth maps resulted for both sites in 61% overall accuracy. Application of the rule set to a third validation image, resulted in 53% overall accuracy. These consistent results show promise for species level mapping in such biodiverse environments, but also prompt a discussion on assessment of classification accuracy.

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The power of computer game technology is currently being harnessed to produce “serious games”. These “games” are targeted at the education and training marketplace, and employ various key game-engine components such as the graphics and physics engines to produce realistic “digital-world” simulations of the real “physical world”. Many approaches are driven by the technology and often lack a consideration of a firm pedagogical underpinning. The authors believe that an analysis and deployment of both the technological and pedagogical dimensions should occur together, with the pedagogical dimension providing the lead. This chapter explores the relationship between these two dimensions, and explores how “pedagogy may inform the use of technology”, how various learning theories may be mapped onto the use of the affordances of computer game engines. Autonomous and collaborative learning approaches are discussed. The design of a serious game is broken down into spatial and temporal elements. The spatial dimension is related to the theories of knowledge structures, especially “concept maps”. The temporal dimension is related to “experiential learning”, especially the approach of Kolb. The multi-player aspect of serious games is related to theories of “collaborative learning” which is broken down into a discussion of “discourse” versus “dialogue”. Several general guiding principles are explored, such as the use of “metaphor” (including metaphors of space, embodiment, systems thinking, the internet and emergence). The topological design of a serious game is also highlighted. The discussion of pedagogy is related to various serious games we have recently produced and researched, and is presented in the hope of informing the “serious game community”.

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Even though online commerce has garnered vast academic interest during the recent years, theoretical grounds for consumer behavior online still remains ambiguous. Despite the globally rapid growth of online commerce, only a fraction of Internet browsers end up purchasing goods online. This is argued to be caused by the intangible and distant nature of the Internet, causing overwhelming perceived risks for consumers and negatively affecting transaction intentions. To combat perceived risks, consumers may actively or passively seek to relieve those risks to tolerable level. These risk reduction strategies refer to both institutional mechanisms as well as consumer risk reduction strategies. The objective of this thesis is to provide further understanding upon the relationships between consumer perceived risk, risk reduction strategies and transaction intentions in online marketplaces. To serve the objectives of the present thesis, a quantitative approach was chosen as the method for conducting empirical research. The data was collected with an online survey through discussion board, using a random sample approach. The proposed research model was examined with a set of hierarchical regression analyses. Results revealed several direct relationships as well as moderating interaction effects. The key finding of this thesis is that institutional risk reduction mechanisms significantly contribute to consumer perceived risks. These mechanisms have the potential to reduce perceived risks, and therefore may stimulate transaction intentions. Additionally, it was observed that risk reduction strategies moderate the relationship between intermediary provided risk relievers, consumer perceived risks and transaction intentions. Retailer related risk reduction strategies were also shown to enforce the effectiveness of payment methods; however feedback and monitoring mechanism was shown to have a diminishing effect of perceived risk only when consumers did not rely on product related risk reduction strategies. The present thesis also illustrates the importance of effective information search, as those consumers are more willing to transact as the perceived risks become less significant. For managerial purposes, the importance of well-functioning institutional mechanisms cannot be emphasized enough.

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The main aim of the workshop was to extend international dialogue and promote the development of VREs led by researcher needs. On the first day principal investigators and project managers of a great variety of projects provided an insight in the current state of development regarding technical innovation, disciplinary specific solutions, and impact on the research community. A series of short presentations of selected projects were followed by an extensive poster session that functioned as a "trade fair" of current trends in the field of VRE development and implementation. The second day was dedicated to the discussion of the "next steps" to improve and advance the development of VREs and to foster ideas for future engagement. The results of landscape studies funded by Jisc and the SURFfoundation were presented as Key Notes and impulse for the following discussions in four sub-groups. The sub-groups concentrated on the following four key themes: technological challenges organisation & concepts researcher needs strategic issues The outcomes of the separate discussions consisted of recommendations to the Knowledge Exchange initiative itself, for the Knowledge Exchange partner organisations and beyond.

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The roundtable offered an opportunity to share experiences and perceptions of virtual research environments. John Doove (SURFfoundation) presented his impressions from the VRE projects. Jim Farmer, Instructional Media + Magic led a 50 minute discussion on key developments and challenges. The discussion included issues like: An emerging issue is the sharp and continuous increase of data in an era of limited resources. These increases often reduce the effectiveness of search-additional time is required to find expected results. Would new methods of search may be useful? Should this be included as services in a VRE? The form of much new 'knowledge' is in informal 'publications' such as blogs, email, audio, and video which lack the precise metadata of books and journal articles. Could VRE services assist in using these resources as well? The programme continued with discussions on business models for sustainability led by Birte Christensen-Dalsgaard, The Royal Library, and policy and funders' interventions led by Sigrun Eckelmann, DFG.

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O problema de planejamento de rotas de robôs móveis consiste em determinar a melhor rota para um robô, em um ambiente estático e/ou dinâmico, que seja capaz de deslocá-lo de um ponto inicial até e um ponto final, também em conhecido como estado objetivo. O presente trabalho emprega o uso de uma abordagem baseada em Algoritmos Genéticos para o planejamento de rotas de múltiplos robôs em um ambiente complexo composto por obstáculos fixos e obstáculos moveis. Através da implementação do modelo no software do NetLogo, uma ferramenta utilizada em simulações de aplicações multiagentes, possibilitou-se a modelagem de robôs e obstáculos presentes no ambiente como agentes interativos, viabilizando assim o desenvolvimento de processos de detecção e desvio de obstáculos. A abordagem empregada busca pela melhor rota para robôs e apresenta um modelo composto pelos operadores básicos de reprodução e mutação, acrescido de um novo operador duplo de refinamento capaz de aperfeiçoar as melhores soluções encontradas através da eliminação de movimentos inúteis. Além disso, o calculo da rota de cada robô adota um método de geração de subtrechos, ou seja, não calcula apenas uma unica rota que conecta os pontos inicial e final do cenário, mas sim várias pequenas subrotas que conectadas formam um caminho único capaz de levar o robô ao estado objetivo. Neste trabalho foram desenvolvidos dois cenários, para avaliação da sua escalabilidade: o primeiro consiste em um cenário simples composto apenas por um robô, um obstáculo movel e alguns obstáculos fixos; já o segundo, apresenta um cenário mais robusto, mais amplo, composto por múltiplos robôs e diversos obstáculos fixos e moveis. Ao final, testes de desempenho comparativos foram efetuados entre a abordagem baseada em Algoritmos Genéticos e o Algoritmo A*. Como critério de comparação foi utilizado o tamanho das rotas obtidas nas vinte simulações executadas em cada abordagem. A analise dos resultados foi especificada através do Teste t de Student.

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The study aims to analyze comic strips on the internet, from three different artists: Carlos Ruas, creator of "Um Sábado Qualquer", André Farias, of "Vida de Suporte," and William Leite, author of "Willtirando". The discussion covers the relationship between comics and technology by analyzing the comic strip and the construction of its meaning. The qualitative reflection is aggregated by quantitative data, through which the work shows possible outcomes for the language of the online comic strips, such as the expansion in the format; increased hybridization with various types of images; and the approach phenomenon between the spheres author/reader in digital format. Productions of a most unusual kind also were discussed: the digital comic strips, that incorporate animated effects on its narrative. At the end of the study, we present an online comic strip prototype from the most popular formats used by the authors, in order to reiterate the nature of the comic strips: a brief narrative whose outcome is unexpected and results in humor.

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The dependence and influence of new media on social and organizational life have led to a new orientation of the communicational practices of organizations and to a research paradigm shift to a cocriational model within public relations theory. This model is based on dialogic rhetoric and dialogue that requires a joint production of content and meanings by organizations and publics, which have a central role in shaping image. The new social and communicational paradigms have also an impact on tourism research, implying the need to understand the role of new technologies, particularly websites, in image formation. The purpose of this study is to investigate the role of website in the formation of a tourist destination image (Portugal) through the understanding of the degree of adoption of dialogical principles on websites by official and unofficial tourist organizations and the identifying of denotative and connotative elements that are represented on published and shared photographs in these websites. The research corpus consisted of websites of entities and photographs published and shared on these websites. The methodology used is quantitative and qualitative, based on content analysis of data of websites and photographs. Results indicate that official tourist entities adopted the dialogic principles in a higher degree than unofficials. There is also a higher adoption of the principles related to technical dimension than dialogical dimension. Results confirm a relation between the adoption of dialogical link and an increased openness by entities to the possibility of photo sharing. The analysis of denotative and connotative elements of photography reflects a similarity in representations of entities and tourists. This study contributes to both theoretical perspectives, because it provides a conceptual scheme of destination image formation online and to a practical perspective, because it also suggests guidelines of dialogical practices to incorporate in websites of tourism entities.

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In this article we analyse the emergence of Internet activity addressing the experiences of young people in two British communities: South Asian and Chinese.We focus on two web sites: www.barficulture.com and www.britishbornchinese.org.uk, drawing on interviews with site editors, content analysis of the discussion forums, and E-mail exchanges with site users. Our analysis of these two web sites shows how collective identities still matter, being redefined rather than erased by online interaction. We understand the site content through the notion of reflexive racialisation. We use this term to modify the stress given to individualisation in accounts of reflexive modernisation. In addition we question the allocation of racialised meaning from above implied by the concept of racialisation. Internet discussion forums can act as witnesses to social inequalities and through sharing experiences of racism and marginalisation, an oppositional social perspective may develop. The online exchanges have had offline consequences: social gatherings, charitable donations and campaigns against adverse media representations. These web sites have begun to change the terms of engagement between these ethnic groups and the wider society,and they have considerable potential to develop new forms of social action.

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There is evidence that students benefit from teachers’ explicit fostering of metacognitive strategy knowledge (MSK). However, there is insufficient understanding about the effect of implicit promotion of MSK in regular school instruction. This study investigates the relationship between perceived characteristics of learning environments (social climate, support, autonomy, self-reflection) and students’ MSK. A representative cohort of students (Nt1 = 1,272/Nt2 = 1,126) in Grades 10 and 11 at schools at the upper secondary education level (ISCED Level 3A) in Switzerland participated in this two-wave longitudinal study. Multilevel analysis showed effects on both the individual and the class level. Students who experienced higher social integration showed a higher extent of MSK at the beginning of the school year than students who experienced less social integration. Perceived autonomy was also positively related to students’ MSK on the individual level. In contrast, the results showed a negative relationship between perceived self-reflection and students’ MSK. On the class level, there was a negative relationship between self-reflection and students’ MSK. Teachers’ support did not correlate with students’ MSK on either the individual or the class level. Implications of these results for education and further studies are discussed. (DIPF/Orig.)

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Dissertação (mestrado)—Universidade de Brasília, Faculdade de Educação, Programa de Pós-Graduação em Educação, 2016.

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At national and European levels, in various projects, data products are developed to provide end-users and stakeholders with homogeneously qualified observation compilation or analysis. Ifremer has developed a spatial data infrastructure for marine environment, called Sextant, in order to manage, share and retrieve these products for its partners and the general public. Thanks to the OGC and ISO standard and INSPIRE compliance, the infrastructure provides a unique framework to federate homogeneous descriptions and access to marine data products processed in various contexts, at national level or European level for DG research (SeaDataNet), DG Mare (EMODNET) and DG Growth (Copernicus MEMS). The discovery service of Sextant is based on the metadata catalogue. The data description is normalized according to ISO 191XX series standards and Inspire recommendations. Access to the catalogue is provided by the standard OGC service, Catalogue Service for the Web (CSW 2.0.2). Data visualization and data downloading are available through standard OGC services, Web Map Services (WMS) and Web Feature Services (WFS). Several OGC services are provided within Sextant, according to marine themes, regions and projects. Depending on the file format, WMTS services are used for large images, such as hyperspectral images, or NcWMS services for gridded data, such as climatology models. New functions are developped to improve the visualization, analyse and access to data, eg : data filtering, online spatial processing with WPS services and acces to sensor data with SOS services.

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Este artigo foi desenvolvido com objetivo de produzir indicadores que possam melhorar a funcionalidade dos fóruns online e contribuir numa maior permanência dos estudantes da Educação a Distância. Foi realizada uma análise, orientada pela Epistemologia Qualitativa, dos processos subjetivos e interacionais produzidos nos fóruns de apresentação e fóruns temáticos de duas disciplinas de formação pedagógica – (1) Estratégias de Ensino e Aprendizagem e (2) A Psicologia e a Construção do Conhecimento – ofertadas nos cursos de Licenciatura em Teatro, Música e Artes Visuais, UAB/UnB. As informações produzidas apontam para a necessidade de reconhecimento e valorização do estudante como sujeito na aprendizagem, a consolidação da presença pedagógica do tutor, a valorização dos fóruns como espaços de aprendizagem e a produção de espaços sociais de pertencimento. ______________________________________________________________________________ ABSTRACT