Abstract
Temporal Web Image Retrieval can be defined as the process that retrieves sets of Web images with their temporal dimension from explicit or implicit temporal text queries. Supposing that (a) the temporal dimension is included in image indexing and (b) the query is explicitly expressed with a time tag (e. g. "Fukushima 2011"), the retrieval task can be straightforward as image retrieval has been studied for several years with success. However, text queries are usually implicit in time (e. g. "Second World War") and automatically capturing the time dimension included in Web images is a challenge that has not been studied so far to the best of our knowledge. In this paper, we will discuss different research issues about Temporal Web Image Retrieval and the current progresses of our research in temporal ephemeral clustering and temporal image filtering.

Abstract
Modern societies face high demands for skilled professionals, able to successfully design, deploy and utilize complex Information Technology (IT) -enabled socio-technical systems at ever-increasing levels of reliability and security. Contrary to traditional education practices, the high-level training required to fulfill this demand should rely on the principle that the learners are themselves responsible for their learning process, that they have control over this process, and that the process aims at developing cross-disciplinary and problem-driven competences, not only at acquiring content knowledge. However, such training requires the presence of a highly interactive, problem-oriented environment for technology-supported learning (or e-learning). This poster presents a doctoral research project, which aims at designing, validating and monitoring a collaborative e-learning environment based on the principles of Free/Libre Open Source Software (FLOSS). In order to validate its outcomes, the project will rely on two real-life professional training programs: in Software Engineering for software managers and in e-Government for public managers. The poster presents the objectives, research methodology and expected results from this project. Copyright 2012 ACM.

Abstract
O potencial dos testemunhos pessoais em educação tem recolhido o interesse de muitos investigadores e profissionais do sector dado a riqueza desses materiais para promoverem aprendizagens significativas. No entanto esse potencial ainda necessita de ser explorado em contexto de formação empresarial, em que ainda são mal conhecidos os desafios e soluções para as várias questões relevantes, entre as quais: organização e estrutura dos materiais de formação; requisitos de produção; dinâmicas de formação; avaliação de resultados. Estudar, dos pontos de vista conceptual e de implementação, estas questões foi a principal motivação de um projeto de investigação realizado em parceria pela unidade de investigação CETAC.MEDIA da Universidade de Aveiro e a empresa PT Inovação S.A., que teve como contexto de estudo o portal de Objetos de Aprendizagem COLOR em desenvolvimento na empresa.

Abstract
This paper is concerned with direct or indirect lightning strokes on wind turbines, studying overvoltages and electromagnetic transients. As wind power generation undergoes rapid growth, lightning damages involving wind turbines have come to be regarded with more attention. With the aim of providing further insights into the lightning protection of wind turbines, describing the transient behavior in an accurate way, the restructured version (RV) of the electromagnetic transients program (EMTP) is used in this paper. A new case study is presented with two interconnected wind turbines, considering a direct lightning stroke to the blade or considering that lightning strikes the soil near a tower. Comprehensive computer simulations with EMTP-RV are presented and conclusions are duly drawn.

Abstract
Introduction: Current scientific knowledge reinforces that successful reorganization of surviving nervous tissue supports cognitive and motor recovery after stroke. The development of new neurorehabilitation tools to modulate this physiologic process is needed. In this context, vibratory stimuli are a noninvasive form of proprioceptive stimulation of the nervous system and are freely available and easy to use at a low cost. Objectives: To access the feasibility and tolerability of targeted vibratory stimuli delivered through a wearable device in an early post-stroke setting. Patients and methods: Five stroke patients were recruited from a stroke unit setting having a first ever medial cerebral artery ischemic stroke with motor deficit. The stimulation device developed delivered external vibratory stimuli to major joints at preprogrammed arrays of intensity, duration and interval of actuation. The tolerability test was set for five-hour duration and during that period data on vital parameters, cognitive, motor and sensitive performance as well as anxiety scores were recorded. Results: The device remained in place throughout and none of the patients or relatives asked to interrupt the tolerability test. There were no major complications during the trial or the ensuing days. Attention to the affected side during stimulation was increased in four patients, and two were reported as clearly more awake during the test. Discussion: This is the first tolerability test focused on the use of targeted vibratory stimulus as a neurorehabilitation tool in stroke patients. There were no hazards to report and most interestingly the majority of patients showed increased awareness to the affected side of the body. These findings will be further analyzed under functional MRI control and on long-term ambulatory use trials.

Abstract
Several Web-based on-line judges or on-line programming trainers have been developed in order to allow students to train their programming skills. However, their pedagogical functionalities in the learning of programming have not been clearly defined. EduJudge is a project which aims to integrate the "UVA On-line Judge", an existing on-line programming trainer with an important number of problems and users, into an effective educational environment consisting of the e-learning platform Moodie and the competitive learning tool QUESTOURnament. The result is the EduJudge system which allows teachers to apply different pedagogical approaches using a proven e-learning platform, makes problems easy to search through an effective search engine, and provides an automated evaluation of the solutions submitted to these problems. The final objective is to provide new learning strategies to motivate students and present programming as an easy and attractive challenge. EduJudge has been tried and tested in three algorithms and programming courses in three different Engineering degrees. The students' motivation and satisfaction levels were analysed alongside the effects of the EduJudge system on students' academic outcomes. Results indicate that both students and teachers found that among other multiple benefits the EduJudge system facilitates the learning process. Furthermore, the experiment also showed an improvement in students' academic outcomes. It must be noted that the students' level of satisfaction did not depend on their computer skills or their gender.