Abstract
The production of waste pollutants has increased in recent decades at an impressive rate. These pollutants pose a threat to life on our planet, so it is increasingly important to process them correctly. Fortunately, today it is possible to obtain profit through the reuse and recycling of most of these residues, in particular, of vegetable oil, which is especially interesting due to the potential of transforming it into biodiesel. However, this process does present some constraints, mainly related to the operating costs associated with its collection. This paper proposes a new platform that aims to simplify the bureaucracy of the process and optimize the collection routes, thus maximizing the potential profit to be obtained from this business.

Abstract
Accessibility has become increasingly important in information technology, particularly due to legislation pressure to make affordable public services to all. Being end-users and software companies those who have direct contact with accessibility problems, other stakeholders are committed to defining methods and change mentalities in Web accessibility implementation. In addition to a conceptual definition, this chapter presents entities views with responsibilities in the area, taking into account their work done in the past and the prospects for future. The understanding of the interaction between all these perspectives will help to realize the way it will go, which carries with it great challenges and opportunities, widely explored in this work.

Abstract
This paper presents an on-going work around accessibility issues within the use of social media. With a lack of background in this field, the purpose of the study was to analyze the accessibility levels of different social media websites and aggregators. Based on W3C Web Content Accessibility Guidelines, we have selected three automatic evaluation tools in order to realize a first set of preliminary tests. We verified that none of the websites clearly passed in the evaluation process and our sample didn't meet the adopted accessibility guidelines. The errors occurrence within the social media aggregators' tests was less than in the social media websites. Therefore, it seems to be indisputable to propose a tool that allows users to manage their own social media websites accounts in a more accessible way. Thus, this study presents a list of defined requirements to implement an accessible social media aggregator solution. © 2013 Springer-Verlag Berlin Heidelberg.

Abstract
The current technological and social Era in which our society lives, provides for the necessary background in order for Social Networks Sites (SNS) to be considered an essential and very relevant tool not only for individual social interaction, but also for firms to perform business activities. By analyzing the existent literature on the SNS adoption at firm level, the authors perceived the existence of a knowledge gap on this topic, thus creating the need for a SNS related literature review. In this paper, we present a systematic literature review on the SNS topic, mainly focusing the efforts towards the adoption of this technology at firm level. Some final considerations on future research are also presented in the final section of the article.

Abstract
This study translates how the potential exists for ICT and Web 2.0 to promote and improve the quality and efficiency of the supply of health services. The segmented and personalized access to individual clinical records is considered in the context of basic support information which simultaneously facilitates an initial screening by a health professional, to all those who fit in a universe of clients and patients of Private Healthcare Organizations - PHO. The context is of excellent customized health care which builds trusting relationships with the target market. The project does however recognize barriers to this change namely by making the health system more transparent clinicians who hitherto have gone mainly unquestioned and unnoticed will subsequently possibly be subject to more scrutiny and possible judicial action in case of mal practice. Nonetheless, with this work we aim to present an initial position relative to the need for the existence of information systems which support the process of creation of customer loyalty in private organizations delivering health care services.

Abstract
Existing literature argues that emotions have a significant impact on the majority of human activities and functions. The learning process is one of the activities on which emotions have a direct influence. Thus, understanding the manner in which emotions change the students' learning process is not only very important but it can also allow to improve the existing learning models. Currently, in the majority of situations, the teacher serves as a facilitator between the student and the learning course, and through a constant analysis of the student's behaviour, emotions and achievements, he constantly performs adjustments to the teaching process in order to meet the students' needs and goals. Thus far, in online learning environments there is no easy way for teachers to analyse students' behaviour and emotions. A possible solution to this problem can be the development of mechanisms that enable computers to automatically detect students' emotions and adapt the learning process in order to meet students' real needs. An emotional learning model was described and a software prototype was developed and tested, in order to find out whether it performs live identification of the students' emotions, by using affective computing techniques, and whether it automatically performs adjustments to their individual learning process. Through a deeper analysis and multi-disciplinary discussion of the achieved results it is possible to acknowledge that not only emotions impact students' learning, but also that an application that performs live emotion recognition and which integrates this feature with adjustable online learning environments will trigger improvements in students' learning.