DIGITAL LIBRARY FOR DIGITAL DIVIDE AND ENVIRONMENT OF SCARCE ACCESS TO PRINTED MATERIALS: THE CASE OF UNIVERSITY JEAN PIAGET OF CAPE VERDE

With the failure of the traditional mechanisms of distributing bibliographic materials into developing countries, digital libraries show up as a strong alternative in accomplishing such job, despite the challenges of the digital divide. This paper discusses the challenges of building a digital library (DL) in a developing country. The case of Cape Verde as a digital divide country is analyzed, in terms of current digital library usage and its potentiality for fighting the difficulties in accessing bibliographic resources in the country. The paper also introduces an undergoing project of building a digital library at the University Jean Piaget of Cape Verde.

Designing mobile access to DSpace-based digital libraries

Developing countries face serious problems on building and using digital libraries (DL) due to low computer and Internet penetration rates, lack of financial resources, etc. Thus, since mobile phones are much more used than computers in these countries, they might be a good alternative for accessing DL. Moreover, in the developed world there has been an exponential growth on the usage of mobile phones for data traffic, establishing a good ground for accessing DL on mobile devices. This paper presents a design proposal for making DSpace-based digital libraries accessible on mobile phones. Since DSpace is a popular free and open source DL system used around the world, making it accessible through mobile devices might contribute for improving the global accessibility of scientific and academic publications.

Enabling mobile access to digital libraries in digital divide contexts

Digital libraries (DL) have had a tremendous impact on improving the accessibility of scientific and academic publications. In developing countries, they seem to be the great hope, due to the serious existing problems with the traditional publishing and distribution mechanisms and to the potential they have on enabling access to a great panoply of publications. Moreover, accessing digital libraries over mobile devices has the potential of reaching a broader community of users and on helping to bridge the digital divide, since there are very reduced computer and Internet penetration rates in these countries, along with a higher mobile phone usage. For developed countries, accessing digital libraries on the go might also bring important added value. This paper features an analysis of the major issues related to making digital libraries accessible over mobile devices. A specific study on the possibility of using mobile digital libraries in a developing country context is also presented along with a proposal for making DSpace based digital libraries accessible over mobile phones.

Modulador de Magnitude em DSP

A eficiência espectral e o consumo de potência constituem dois parâmetros fundamentais a ter em conta no projecto de qualquer sistema de comunicação digital. As técnicas de modulação e a filtragem FIR do tipo root-raised cosine (RRC) de baixo rool-off, assumem um papel cada vez mais importante nas comunicações sem fios com vista à maximização da eficiência espectral dos sistemas. A consequência disto é um aumento da razão entre a potência de pico do sinal a transmitir e a sua potência média (Peak-to-Average Power Ratio - PAPR). Elevados valores de PAPR impõem elevados requisitos de linearidade nos amplificadores de potência usados nos transmissores, com consequente aumento do consumo de potência do sistema. Um elevado PAPR dificulta ainda o projecto dos conversores digitais - analógicos (DAC), devido à elevada gama dinâmica do sinal. A realização desta dissertação tem como objectivo a validação de um método proposto recentemente, controlo de magnitude (Magnitude Modulatation-MM) do sinal modulado com vista à redução do PAPR do sinal de banda limitada a transmitir. Este sistema foi designado por, Multistage Polyphase Magnitude Modulation (MPMM). O sistema foi desenvolvido num processador digital de sinal (DSP) TMS320C6713 (vírgula flutuante) da Texas Instruments (TI). Foram exploradas as capacidades de processamento paralelo deste DSP, de forma a maximizar o desempenho do sistema.

DIGITAL LIBRARIES IN THE DEVELOPING COUNTRIES

Digital libraries (DL) are seen as a hope to developing countries in their struggle for accessing bibliographic resources, especially in a context where the traditional distribution mechanisms failed tragically. Several difficulties are however faced by these countries to build and use digital libraries, due mainly to its high development costs and to the poor existing ICT resources in these countries. This paper discusses the importance of digital libraries for developing countries and introduces the main challenges they face in building and using such libraries. The current alternatives and major initiatives for making digital information accessible to developing countries are also addressed.

Building digital libraries in developing countries

Digital libraries (DL) are seen as the hope for developing countries in their struggle to access scientific and academic publications. However, building such libraries in developing countries is a real challenge. These countries usually face several difficulties, such as low computer and Internet penetration rates, poor ICT infrastructure, lack of qualified human resources, lack of financial resources, etc. Thus, it is imperative finding alternative mechanisms of building DL that best fit the specificities of these countries. This paper presents the process used for building a digital library at the University Jean Piaget of Cape Verde, created in a context of scarce access to printed materials and serious difficulties in accessing ICT resources. This paper also presents the challenges, the solutions and the adopted methodological framework.

Using Digital and Traditional Libraries in Developing Countries

Given the existing challenges in accessing print-based publications in developing countries, digital libraries are seen as a good alternative. Thus, it is important to understand how such libraries are used in these contexts, especially when compared with the usage of traditional libraries. This paper analyzes and compares the usage of the digital and traditional libraries of the University Jean Piaget of Cape Verde, aiming at understanding the way they are used, and the relation between the access to the existing information resources in these two libraries.

A Regulação da Comunicação Social em Cabo Verde na Era Digital

Com a perspetiva da implementação de uma Autoridade Reguladora para a Comunicação Social em Cabo Verde que terá poderes de emitir normas, assegurar a sua aplicação, fiscalizar e reprimir eventuais infrações, esta dissertação propõe fazer uma abordagem das representações dos atores envolvidos, da importância e da afirmação da primeira entidade administrativa com autoridade para assegurar o processo de hétero regulação dos meios de comunicação social, no quadro da expansão digital. Os avanços tecnológicos nas últimas décadas mudaram a estruturação dos meios de comunicação social, um pouco por todo mundo, incluindo Cabo Verde. Neste país, o processo de adesão por parte dos media tem sido lento na busca de uma melhor alternativa para lidar com as plataformas digitais. Com o advento da Internet, a radiodifusão por satélite e a Sociedade da Informação, os meios tradicionais como a imprensa escrita e a radiodifusão – ainda sujeitos a um estreito controlo de conteúdos - despoletaram dúvidas e incertezas quanto à forma mais apropriada de regular a comunicação social, já que não podem ser tão facilmente controlados. Este estudo pretende também identificar a melhor estratégia de regulação dos media em Cabo Verde no contexto da sua migração para o digital, na medida em que se existir uma estrutura reguladora forte, que acompanhe os princípios fundamentais da regulação, será possível responder eficazmente às solicitações da atual mudança, garantindo o difícil equilíbrio entre eles.

Projecto de Simulação: Empresa Digital Tech

Em contexto de simulação, utilizando a plataforma Marketplace, foram colocados oito grupos, simulando serem empresas, a trabalhar num ambiente virtual de mercado. Neste, teriam de actuar como empresas produtoras e comercializadoras de computadores, exercendo todas as actividades de uma empresa real. O objectivo era avaliar o desempenho de cada grupo/empresa, vencendo quem tivesse o melhor Balanced Scorecard acumulado. O presente relatório refere-se a uma dessas empresas, nomeadamente, a Digital Tech. Abstract As a simulation, using the Marketplace Platform, eight groups were placed as companies operating in a virtual market. They would act as companies that produce and sell computers employing all the roles of a real company. The goal was to evaluate each group/company, to determine the winner with the best Accumulated Balanced Scorecard. This report is about one of these companies, The Digital Tech