Recursos de colección

Biblioteca Digital do IPB (53.442 recursos)

A Biblioteca Digital do IPB, tem por objectivo divulgar e permitir o livre acesso à produção científica produzida pela comunidade académica, promovendo a integração, partilha e a visibilidade da informação científica e garantindo a preservação da memória intelectual do Instituto Politécnico de Bragança.

IC - Capítulos de Livros

Mostrando recursos 1 - 12 de 12

  1. Development of E-learning in higher education and future directions

    Uhomoibhi, James; Palma, José; Alves, Paulo; Elpebion, Y.; Restivo, T.M.; Piteira, Martinha; Soares, F.O.; Fernandez, C.
    The present paper is based on the work of the ‘Future of E-Learning Group’, a constituent of the EUNIS E-Learning task Force. The group has set up a number of tasks to fulfill its role, one of which, is seeking and disseminating information on the development of e-learning with a view to ensuring the right guide is provided for progress into the future. In our work to date, in this era of globalization, we question the ability of present university systems to respond adequately and appropriately to complex demands of an Information Economy. There’s increasing involvement of private sector in...

  2. Biblioteca Digital do IPB: integração, partilha e acesso aberto

    Pais, Clarisse; Alves, Albano
    Em junho de 2006 foi criada a Biblioteca Digital do IPB e em novembro desse mesmo ano foram depositados os primeiros documentos. Foram dados os primeiros passos para a concretização de um objetivo plural - a criação de um repositório. É uma estrutura de apoio à investigação que promove a integração, a partilha e o acesso aberto à produção científica, realizada e produzida pela comunidade académica do Instituto Politécnico de Bragança. É, assim, um garante da preservação da memória intelectual e da investigação aplicada de referência. A implementação do repositório foi sempre apoiada pela atual presidência do IPB, facilitando, assim, a...

  3. Model-driven development for pervasive information systems

    Fernandes, José Eduardo; Machado, Ricardo J.; Carvalho, João Álvaro
    This chapter focuses on design methodologies for pervasive information systems (PIS). It aims to contribute to the efficiency and effectiveness of software development of ubiquitous services/applications supported on pervasive information systems. Pervasive information systems are comprised of conveniently orchestrated embedded or mobile computing devices that offer innovative ways to support existing and new business models. Those systems are characterized as having a potentially large number of interactive heterogeneous embedded/mobile computing devices that collect, process, and communicate information. Also, they are the target of technological innovations. Therefore, changes in requirements or in technology require frequent modifications of software at device and...

  4. Redes sociais na aprendizagem

    Miranda, Luísa; Morais, Carlos; Alves, Paulo; Dias, Paulo
    A análise do impacto crescente das redes sociais no desenvolvimento dos processos de interacção, formação de grupos de interesse e partilha, bem como na sua utilização nos processo de educação e formação constitui o objecto do presente estudo, o qual incide numa amostra de alunos de uma instituição de ensino superior, através de uma investigação realizada por questionário. No âmbito deste estudo identificaram-se os principais motivos que levam os alunos a utilizarem as redes sociais, assim como as redes que utilizam com maior frequência, as actividades que desenvolvem e as principais potencialidades que reconhecem às redes sociais. Como motivações mais...

  5. Advances in artificial intelligence to model student-centred VLEs

    Alves, Paulo
    The challenges to the educational paradigm, introduced with the change from a teacher to a student centred paradigm, has several implications in the organization of all the educational system. The adoption of e-learning in all of the educational levels, was a huge step forward in terms of access to resources without constrains of space and time. But e-learning didn’t reach the plato in lifelong learning scenarios, because we have a great diversity of learning contexts in universities, with more students come back to update their knowledge when they are already in the work market. The paradigm “one size fits all” is still being applied and all the...

  6. A mobile agent manager

    Lopes, Rui Pedro; Oliveira, José Luís
    Friendliness on user interfaces has been mostly forgot in mobile agent research. In fact the multitude of problems that have to be solved have left this more "simple" piece of the package out of target. However, the success of technology comes also from this important layer in the product development. This paper describes an application that integrates monitoring data from the mobile agents environment, process and presents information in different ways according to different user requirements and allows the user to remotely control mobile agents entities.

  7. A project of speech input and output in an e-commerce application

    Freitas, D.; Moura, António; Braga, Daniela; Ferreira, Helder; Teixeira, João Paulo; Barros, Maria João; Gouveia, Paulo D.F.; Latsch, Vagner
    The present paper describes the work done during the last year in the development of European Portuguese (EP) speech recognition and synthesis channels for an Internet e-commerce application. The objective of this work was to develop the appropriate speech input and output, to enable the user to more comfortably use an e-commerce web site issuing commands and options under guidance of a menu system. The speech interface operation guidelines are briefly described in their principles and resulting specifications for the speech channels, namely, menu structure and operation dynamics, and in the following, the system software approach and the speech recognition...

  8. Model-driven development for pervasive information systems

    Fernandes, José Eduardo; Machado, Ricardo J.; Carvalho, João Álvaro
    This chapter focus on design methodologies for pervasive information systems (PIS). It aims to contribute for the efficiency and effectiveness on software development of ubiquitous services/applications supported on pervasive information systems. Pervasive information systems are composed of conveniently orchestrated embedded or mobile computing devices that offer innovative ways to support existing and new business models. Those systems are characterized as having a potential large number of interactive heterogeneous embedded/mobile computing devices that collect, process, and communicate information. Additionally, they are target of high rates of technological innovations. Therefore, changes on requirements or in technology demands for frequent modifications on software at...

  9. Architecture to integrate broadband access networks and wireless grids

    Pereira, João Paulo
    Today, the access networks face two main challenges: the increasing bandwidth demand and mobility trends. All this will require fundamental changes to the operations of access networks, the functionality of network nodes and the architecture itself. By other side, the evolution of computing and communication networks toward decentralized and distributed systems implies that all the intelligence is on the edge nodes of the networks. Integrating wireless devices with the traditional wired grid infrastructure will allow the access (transfer, processing, etc) to the information that is now scattered across the different devices. In this paper, we present a new architecture and a cost model to support the new requirements of...

  10. The role of WiMAX technology on broadband access networks: economic model

    Pereira, João Paulo

  11. Quantum computation perspectives in medical image processing

    Rodrigues, Pedro; Ferreira, Manuel; Monteiro, João
    The need to increase the complexity of computational methods to produce improvements in functional performance, particularly in medical image processing applications, leads to find suitable physical devices. This chapter describes two ways of adapting the techniques of image processing to quantum devices. This kind of computing can achieve, for some problems, unparalleled performance as compared to classic computing. In the first method, using the quantum Grover’s algorithm how to implement image processing techniques under quantum rules is shown. In the second method, using diffraction and interference, the possibility of using less complex quantum devices for processing digital images is treated....

  12. Segmentation and classification of leukocytes using neural networks: a generalization direction

    Rodrigues, Pedro; Ferreira, Manuel; Monteiro, João
    In image digital processing, as in other fields, it is commonly difficult to simultaneously achieve a generalizing system and a specialistic system. The segmentation and classification of leukocytes is an application where this fact is evident. First an exclusively supervised approach to segmentation and classification of blood white cells images is shown. As this method produces some drawbacks related to the specialistic/generalized problems, another process formed by two neural networks is proposed. One is an unsupervised network and the other one is a supervised neural network. The goal is to achieve a better generalizing system while still doing well the...

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