Advances in ubiquitous computing are enabling the emergence of opportunities in many areas; among them we highlight the health-related applications. In this area, there is a trend toward developing many applications that enable care wherever you are and whenever you need, called ubiquitous healthcare. A detailed survey of existing and proposed models has shown that [...]
Nowadays, there are hundreds of underway worldwide projects to redesign both com- munication protocols and architecture of the Internet. These initiatives are collectively called “future Internet” research. Most of these initiatives rely on existing distributed systems, which often limit or even prevent the development of “clean slate” solutions. The main reason is that the great [...]
Uma nova geração de computação ubíqua, também conhecida como Internet das Coisas ou Internet of Things (IoT), representa uma oportunidade, mas também um desafio, para empresas em diversos segmentos da indústria. Com IoT, produtos da era industrial, incluindo carros, telefones, televisões, geladeiras, câmeras e até mesmo livros, podem ter capacidade digital embutida, oferecer novas funções, [...]
Elasticity can be seen as the ability of a system to increase or decrease the computing resources allocated in a dynamic and on demand way. It is an important feature provided by cloud computing, that has been widely used in web applications and is also gaining attention in the scientific community. Considering the possibilities of [...]
Even though the use of recommender systems is already widely spread in several application areas, there is still a lack of studies for accessibility research field. One of these attempts to use recommender system benefits for accessibility needs is Vulcanus. The Vulcanus recommender system uses similarity analysis to compare user’s trails. In this way, it [...]
Projeto certificado pela empresa SIEMENS HEALTHCARE DIAGNOSTICOS S.A. em 05/01/2017. Descrição: O projeto constitui em uma parceria de pesquisa aplicada entre a Universidade do Vale do Rio dos Sinos (UNISINOS), a empresa Siemens Healthineers e a Friedrich Alexander-Universität (FAU). O projeto visa desenvolvimento tecnológico, de pesquisa e de inovação em salas cirúrgicas híbridas. As salas [...]
Authentication and authorization are two of the most important services for any IT infrastructure. Taking into account the current state of affairs of cyber warfare, the security and dependability of such services is a first class priority. For instance, the correct and continuous operation of identity providers (e.g., OpenID) and authentication, authorization and accounting services [...]
Elasticity is undoubtedly one of the most striking characteristics of cloud computing. Especially in the area of high performance computing (HPC), elasticity can be used to execute irregular and CPU-intensive applications. However, the on- the-fly increase/decrease in resources is more widespread in Web systems, which have their own IaaS-level load balancer. Considering the HPC area, [...]
Process rescheduling is a known technique to face with system heterogeneity and dynamism, being especially pertinent on Bulk Synchronous Parallel (BSP) programs. These programs are organized in a set of round-based supersteps, in which the slowest process determines the moment of synchronization. This approach motivated us to develop a first model called MigBSP, which combines [...]
Elasticity is one of the most known capabilities related to cloud computing, being largely deployed reactively using thresholds. In this way, maximum and minimum limits are used to drive resource allocation and deallocation actions, leading to the following problem statements: How can cloud users set the threshold values to enable elasticity in their cloud applications? [...]