Browsing by Author "Cunha, Carlos R."
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- Uma abordagem ubíqua para o acesso contextualizado a informação e serviços em turismoPublication . Cunha, Carlos R.; Santos, Arlindo; Silva, CarlosO turista é, desde sempre, e cada vez mais, um actor sedento de informação acerca de tudo o que o rodeia e sobre o qual percepciona. É, igualmente, exigente quanto aos mecanismos disponibilizados para que possa interagir com o ambiente que o rodeia. Apesar do turismo em Portugal, e, em muitos outros países, representar um sector económico muito relevante para a competitividade nacional, as ferramentas de informação disponibilizas aos turistas estão longe de corresponderem aos efectivos requisitos que estes apresentam e às potencialidades tecnológicas existentes. Disponibilizar mecanismos assentes na ubiquidade de acesso à informação e aos serviços, torna-se fundamental para uma nova geração de sistemas de apoio ao turista e ao turismo. Neste artigo, para além de se reflectir acerca de como deverão ser concebidos novos sistemas de informação capazes de inovar na forma como apoiam o turista e o turismo, é apresentada uma arquitectura e um protótipo desenvolvidos, e, finalmente, é apresentada uma abordagem de trabalho futuro.
- Alavancar a criação e integração de conteúdos de realidade virtual através de uma plataforma colaborativa: o caso do sector do turismoPublication . Mendonça, Vítor; Cunha, Carlos R.; Morais, Elisabete Paulo; Gomes, João PedroA Realidade Virtual apresenta-se como uma ferramenta tecnológica promissora a qual poderá constituir-se como uma oportunidade para que as organizações possam desenvolver novos paradigmas de comunicação que poderão traduzir-se em vantagens competitivas. A aplicação da Realidade Virtual no âmbito do sector do turismo poderá criar novas oportunidades e atingir públicos que de forma tradicional não seriam alcançáveis. Contudo, o desenvolvimento deste tipo de soluções implica elevado esforço e recursos que a generalidade das organizações não dispõe. Neste contexto, consideramos oportuno o desenvolvimento de uma plataforma colaborativa que promova a disponibilização de conteúdos de Realidade Virtual. Para tal propósito, apresentamos um modelo e a proposta de desenvolvimento de um portal web colaborativo que permita, a diversas entidades, agilizar a disponibilização de conteúdos, assim como o desenvolvimento de uma aplicação de Realidade Virtual, de conteúdos dinâmicos, para os utilizadores.
- An agent-based security framework for cooperative business networksPublication . Cunha, Carlos R.; Gomes, João Pedro; Morais, Elisabete PauloThe actual economic paradigm is based on a strongly cooperative model that tries to support a more competitive and global organizations response. But, with cooperation comes an intrinsic need - interconnection and interoperability of information systems among business partners. This represents, in many areas, a huge organizational challenge, being the field of information, and communication security one emerging key issue and a natural enabler for cooperative behavior and to the proper establishment and support of trust among network partners. Security frameworks, that can be able to describe and act on the basis of interoperability, cooperation and proactivity, became essential to support the new needs of modern business models. This paper presented a framework that aims to contribute to a sustainable organizational information security-processes support, based on the ability to describe the allowed business process interactions among cooperative partners; furthermore, the framework presents a cooperative security perspective among partners basis on the idea that, if organizations have business cooperation, they should also have active security cooperation and regulation. If organizations, that need to cooperate, do not feel secure when they interconnect their information systems, the all cooperative perspective can fall down. Trust being one basic need for cooperation, impulse the need of a new security approach for cooperative scenarios.
- An architecture for interoperability and ubiquity of medical informationPublication . Plácido, Gonçalo R.; Cunha, Carlos R.; Morais, Elisabete PauloIn critical situations, such as decision making in healthcare, is necessary to have access to all the patient’s information, this information must be reliable, and must be accessed in an easy and fast way. These requirements make medical information systems of extreme importance. However in today’s molds and with the advent of the Internet and mobile devices, a paradigm shift, from the current isolated systems to interoperable distributed systems, that take advantage of ubiquitous computing, is needed. The present work proposes an architecture that aims to answer the needs of interoperability between heterogeneous systems and the need of ubiquity of medical information systems.
- An autonomous intelligent gateway infrastructure for in-field processing in precision viticulturePublication . Peres, Emanuel; Fernandes, Miguel A.; Morais, Raul; Cunha, Carlos R.; López, Juan A.; Matos, Samuel R.; Ferreira, Paulo Jorge S.G.; Reis, Manuel José Cabral dos SantosWireless sensor networks have found multiple applications in precision viticulture. Despite the steady progress in sensing devices and wireless technologies, some of the crucial items needed to improve the usability and scalability of the networks, such as gateway infrastructures and in-field processing, have been comparatively neglected. This paper describes the hardware, communication capabilities and software architecture of an intelligent autonomous gateway, designed to provide the necessary middleware between locally deployed sensor networks and a remote location within the whole-farm concept. This solar-powered infrastructure, denoted by iPAGAT (Intelligent Precision Agriculture Gateway), runs an aggregation engine that fills a local database with environmental data gathered by a locally deployed ZigBee wireless sensor network. Aggregated data are then retrieved by external queries over the built-in data integration system. In addition, embedded communication capabilities, including Bluetooth, IEEE 802.11 and GPRS, allow local and remote users to access both gateway and remote data, as well as the Internet, and run site-specific management tools using authenticated smartphones. Field experiments provide convincing evidence that iPAGAT represents an important step forward in the development of distributed service-oriented information systems for precision viticulture applications.
- An ICT integrated model for traceability, promotion and valorization of regional food productsPublication . Cunha, Carlos R.; Mourão, António; Mendonça, Vítor; Correia, RicardoMany country's regions are rich in food-heritage. Within this, food products are often ex-libris of the regions and sustain ancestral traditions that make these regions known in the world. This reality materializes products of protected geographical origin and/or protected designation of origin. In the context of a society increasingly interested in the traditional, in respect for the environment, animal rights and the guarantee of authenticity, this paper proposes a conceptual model based on technology capable of guaranteeing the traceability of these products, as well as leveraging their valorization and, at the same time, it guarantees, to the different players of the supply chain, useful feedback on the perception of the consumer and his interests. This proposal will enhance the products by increasing information and services available to the consumer and will allow the process of creation, development and production of food products to be done “in partnership with consumers”. Even though our focus is on typical regional food products, our proposed model is suitable for any food supply chain.
- An ICT platform to support cultural heritage in rural communities: the Viv@vó – living in the grandma's house case studyPublication . Cunha, Carlos R.; Carvalho, Aida; Afonso, Luís C.M.; Silva, Daniel; Fernandes, Paula Odete; Pires, Luís; Costa, Carlos Casimiro da; Correia, Ricardo; Ramalhosa, Elsa; Correia, Alexandra I.; Parafita, AlexandreTourism and manly experience and cultural heritage tourism are growing in tourist’s interests. Rural regions have an untapped potential for this slice of tourism industry. Also, rural regions have an enormous collection of ancestral knowledge. Unfortunately, all this knowledge typically is elderscentered and it lack effective processes of digitalization, storage and providing systems for that all this heritage can be perpetuated through future generations. From this base-thinking it was created a project case study limited to the Portuguese Northeast region, named Viv@vó – living in the grandma's house. This paper presents this project and what it has been achieved during the project development process.
- An indoor navigation architecture using variable data sources for blind and visually impaired personsPublication . Gomes, João Pedro; Sousa, João Paulo; Cunha, Carlos R.; Morais, Elisabete PauloContrary to outdoor positioning and navigation systems, there isn’t a counterpart global solution for indoor environments. Usually, the deployment of an indoor positioning system must be adapted case by case, according to the infrastructure and the objective of the localization. A particularly delicate case is related with persons who are blind or visually impaired. A robust and easy to use indoor navigation solution would be extremely useful, but this would also be particularly difficult to develop, given the special requirements of the system that would have to be more accurate and user friendly than a general solution. This paper presents a contribute to this subject, by proposing a hybrid indoor positioning system adaptable to the surrounding indoor structure, and dealing with different types of signals to increase accuracy. This would permit lower the deployment costs, since it could be done gradually, beginning with the likely existing Wi-Fi infrastructure to get a fairy accuracy up to a high accuracy using visual tags and NFC tags when necessary and possible.
- An ubiquitous approach to tourism and tourists information needs in the Douro Valley Heritage sitePublication . Carvalho, Aida; Cunha, Carlos R.With the distinction of the Alto Douro Wine Region to World Heritage Site in the category of Cultural Landscape, in December 2001, the pristine nature was echoed internationally, reaching new visibility. This is not only an amazing space where are produce excellent wines, notably the Port Wine, but also a natural Heritage, architectural, socio-cultural, gastronomic and wine space that urges boost. The heritage, its potential as a tourist resource, needs to be explained and / or interpreted, bailing up the model of ubiquitous computing - mobile phone, smart phone or tablet. These devices are embedded in the people daily routines, and represent today’s most common and widely used technology. This growing technological phenomenon, aims to break with the traditional model, centered on the personal computer, giving users the ability to interact with the digital world through the elements that surround the user environment, and using multiple devices. Because all the information is reproduced in multiple atoms, becomes fundamental rethink the classical forms to support information needs that tourists have on the trip - guided tours and self-guided, "living history" performances / plays, forums / discussions, pamphlets, interpretive panels, signage, among others, as well as how actors tourist must interact with these.This paper analyzes the main problems and needs that tourism entities have in disseminating information, and proposes a new approach of interaction between the tourist and the information and services within tourism. The proposed approach presents a Technologic Framework, based on the principle of ubiquity and implementing the concept of smart spaces supported by contextualization mechanisms.
- Avaliação SEO dos websites dos hotéis das Terras de Trás-os-Montes através do UbersuggestPublication . Morais, Elisabete Paulo; Cunha, Carlos R.; Mendonça, VítorO SEO (Search Engine Optimization) é uma estratégia de marketing digital que consiste em otimizar um site para melhorar a sua visibilidade e posicionamento nos resultados dos motores de pesquisa. Isso é importante porque a grande maioria das pessoas que procuram por um serviço ou produto, como um hotel, utilizam os motores de pesquisa para encontrar informações relevantes. Ao otimizar o website do hotel com palavras-chave relevantes, meta tags, conteúdo de qualidade e outros elementos importantes para o SEO, o site tem mais chances de aparecer na primeira página dos resultados orgânicos quando alguém efetua uma pesquisa. Além disso, o SEO também é importante para melhorar a experiência do utilizador no website, aumentando a velocidade de carregamento, a facilidade de navegação e a relevância do conteúdo. Isso pode aumentar o tempo que o visitante permanece no website e as chances de ele se tornar um cliente. Pretende-se com o presente artigo efetuar uma auditoria SEO aos websites dos hotéis de 4 e 3 estrelas da região Terras de Trás-os-Montes.