This paper presents a real-time computer vision system that tracks the motion of a tennis ball in 3D using multiple cameras. Ball tracking enables virtual replays, new game statistics, and other visualizations which result in very new ways of experiencing and analyzing tennis matches. The system has been used in international television broadcasts and webcasts of more than 15 matches. Six camer...

Computer mediated communication is rapidly assuming an integral role in the university education experience. This is especially true for auditorium-style classes, which may potentially include hundreds of students. In such classes, the instructor may seek a more efficient means of communicating. The two emerging audio-visual media distribution channels, podcast and webcast augment the existing ...

Given the increasingly important role social networking services play as information sources during and after disasters, this study aims to investigate how the municipal governments of major U.S. cities and their emergency agencies employed RSS (Really Simple Syndication) or Atom, webcasts, Facebook, Twitter, YouTube, and photo-sharing platforms for emergency management. Our findings reveal tha...

Within the last years, several technologies have been developed to help building e-learning portals. Most of them follow approaches that deliver a vast amount of functionalities, suitable for class-like learning. The SuGI project, as part of the D-Grid (funded by the BMBF), targets on delivering a highly scalable and sustainable learning solution to provide materials (e.g. learning modules, tra...

HIV Research for Prevention: AIDS Vaccine, Microbicide, and ARV-based Prevention Science (HIVR4P) was built on a growing consensus that effective HIV prevention requires a combination of approaches and that understanding, analyzing, and debating the cross-cutting issues that impact prevention research are all essential to combat the global HIV/AIDS epidemic. To that end, the biennial HIVR4P con...

BACKGROUND Producing "traditional" e-learning can be time consuming, and in a topic such as eHealth, it may have a short shelf-life. Students sometimes report feeling isolated and lacking in motivation. Synchronous methods can play an important part in any blended approach to learning. OBJECTIVE The aim was to develop, deliver, and evaluate an international postgraduate module in eHealth usin...

Supporting lifelong learning can be challenging in that participants are often geographically distributed, have significant time constraints, and widely varied skills and preferences with regard to technology. This creates the need for designers to support flexible configurations of systems for delivering content, in ways that still allow for meaningful learning and instruction to take place. I...

At the turn of the twenty-first century, global communication is changing the fabric of society at a rate never experienced before. The Internet, in particular, has redrawn the map of global economy. To be competitive in today's marketplace, companies need to expand commercial activities beyond national borders. The global network of electronic infrastructure has played a significant role in th...

Those involved in the improvement science community have much to celebrate as more resources become available to improve patient safety. Professor Kathleen Steven’s letter in this issue reminds us there is still much to do and that progress depends on building the scientific basis for improved patient safety and health outcomes. Professor Stevens’ letter builds on Professor Pearson’s promotion ...

Schools and universities all over the world are continuously exploring ways to use the web technology in improving teaching effectiveness. The use of course web pages, discussion groups, bulletin boards, and e-mails have shown impact on teaching and learning in significant ways, across all disciplines. e-Learning has emerged as an alternative to traditional classroom-based education and trainin...