Most word embedding methods take a word as a basic unit and learn embeddings according to words’ external contexts, ignoring the internal structures of words. However, in some languages such as Chinese, a word is usually composed of several characters and contains rich internal information. The semantic meaning of a word is also related to the meanings of its composing characters. Hence, we tak...

Remote detection of body-worn concealed weapons or explosives (CWE) is a field of ongoing research in order to provide security against terrorist attacks that can potentially cause a threat to the security of the society. So far there is a gap on detection systems able to function at extended stand-off distances and which operate robustly under harsh environmental conditions. In this Thesis the...

The ubiquitous linking of computers in local and global networks makes possible the sharing of thoughts by people who are separated spatially or temporally. Many efforts are made to increase opportunities for effective collaborative working, learning and acting through innovative uses of computer technology, and one of these efforts is to build group knowledge collaboratively. This paper presen...

IKI IS A HAWAIIAN WORD THAT REfers to being quick. Leuf and Cunningham (2001) define a Wiki as “a freely expandable collection of interlinked Web pages, a hypertext system for storing and modifying information — a database where each page is easily editable by any user with a forms-capable Web browser client” (p. 14). The authors also differentiate between the terms Wiki (uppercase W) and wiki:...

The working environment is the special case of the non-natural environment created by man in which the increased production activity brings about the concentration of stimulators particularly aggressive to the human organism, such as chemical hazards, noise, vibration, extreme temperatures, and finally, intensified psychological and emotional stress. Depending on the nature and intensity, worki...

Collaborative Working Environments (CWE) are widely used for effective collaboration among users. A CWE includes various tools and methodologies to support analysis of coordinating activities. Users within a CWE widely utilize textual means of collaboration and communication. An effective analysis of this textual collaboration can help in improving overall quality of collaborating activities an...

In this article we introduce the main research lines concerning CSCW and groupware, which are forming the core foundation of Collaborative Working Environments (CWE). Furthermore, we introduce the problematic aspects in CWE and the features and recommendations for the integration of CWE in organizations. Through this issue readers will learn new paradigms for the building of CWE as well as dire...

Based on a three-semester design-based research study examining learning and teaching in a web-conferencing environment, this article identifies types of synchronous collaboration competencies and reveals their influence on learning processes. Four levels of online collaborative competencies were observed – operational, interactional, managerial, and design. The relative importance of students ...

This paper presents a framework for analyzing and summarizing collaborative activities in a highly dynamic, context-rich social network. In everyday work, collaboration is essential, and people need to be aware of the activities of their peers to find opportunities for collaboration. Understanding activities of one’s peers become particularly difficult when people collaborate across time, locat...

In this paper, we overview the current status of research in the field of collaborative sensing for urban transportation. We first classify the different types of sensors that can be relevant in collaborative urban sensing and then we analyze three different topics: parking spaces, traffic, and trajectories. We discuss issues regarding the sensing and data sharing approaches as well as relevant...