Abstract

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Abstract

Abstract
The rapid proliferation of human population and the growth of consumption leaded to an increase of hazardous waste. This becomes a worldwide ecological and environmental challenge. According to last available statistics the estimated global municipal solid waste reached 2.02 billion tons. Unfortunately there is not only solid waste: vegetable oil, one kind of liquid waste, used in food manufacturing, is responsible for serious contamination of water resources. Its collection is profitable by recycling into biodiesel and is already regulated in some countries. However it faces several logistic issues. Major issues are related to collection delays, which lead to oil giveaway, and reduced collection [1,2]. This paper proposes a solution to some of these logistic problems introducing a system to manage cooking oil collection in order to increase collection profits. The developed system follows a defined oil collection plan in order to optimize collection routes, introducing a sensor network that triggers collection events to a central system overcoming the current collection delays and wastes. The system is being tested in a real scenario with a Portuguese cooking oil collection company.

Abstract
The lack of data in Portugal is a crucial problem for a full characterization and thus a full digital integration for people with disabilities. This is not only a problem of ethic dimension or equal opportunities but have also an economic dimension because excludes a consumer group with economical potential. Hence, this article focuses on the importance of the characterization of people with disabilities in a social, economic and digital perspective. It aims to emphasize their disabilities and ageing evolution, potential value in the digital business and design awareness for inclusion for improve the quality of life of people with disabilities. (C) 2012 The Authors. Published by Elsevier B.V. Selection and/or peer-review under responsibility of the Scientific Programme Committee of the 4th International Conference on Software Development for Enhancing Accessibility and Fighting Info-exclusion (DSAI 2012)

Abstract
Nowadays there are many types of tools for the optimization of organizational information systems. In the context of these tools, we have systems like e-mail, workflow, wikis, among many others. Despite the fact that, for the planning and designing of conventional information systems, there are many techniques that enable the representation of the elements of those systems and the relationships between them, as for what collaborative systems are concerned, we cannot find specification techniques that allow the representation of the existing degrees/levels of interaction. That is a problem because it hinders the proper planning regarding the choice of this kind of systems. In this paper is proposed a matrix-representation technique, which allows the specification of degrees/levels of interaction between organizational entities and the classification of processes according to the time space taxonomy. In a information systems planning project, these technique will be useful for choosing the correct classes of cooperative tools that should be included in final system solutions.