IEEE 802.11 PCF mode is defined to support timebounded applications in wireless LANs. The poll scheduling plays an important role in PCF mode operation. It differs from the packet scheduling of routers in that incomplete queueing information in each pollable station is known to the scheduler. This paper proposes an adaptive polling algorithm to improve the wireless medium utilization. In our sc...

Large group teaching has always been the most popular way of teaching from past decades. It is one of the most convenient and economical ways to transfer knowledge from the content expert to the learner. Educationists have always raised concerns about active learning in this method. The use of variety of methods would be included in classroom teaching and active learning should be encouraged. T...

Exposure to Mycobacterium avium subspecies paratuberculosis (MAP) does not always lead to Johne's disease. Understanding differences in disease susceptibility of individual animals is a key aspect to controlling mycobacterial diseases. This study was designed to examine the susceptibility or resistance of various breeds of sheep to MAP infection. Merino, Suffolk first cross Merino, Border Leice...

A lot of decisions are made during boardroom meetings. After a discussion, the head of the board often asks for a quick poll. But what if you cannot join the meeting? So called boardroom voting schemes have been proposed to conduct the poll over the Internet and thereby enabling also those who are not present but available online to participant in the poll. But what if you are not available at ...

As the world watched the electoral drama unfold in Florida at the end of 2000, people started wondering, “Wouldn’t all our problems be solved if they just used Internet Voting?”. People all over the world soon started taking a hard look at their voting equipment and procedures, and trying to figure out how to improve them [1]. There is a strong inclination towards moving to Remote Internet Voti...

In this paper we describe a new tool for interactive presentations: the speaker shows a common slideshow on the screen, and the users can see the same slide in their smartphone or tablet, independently from its model and brand. The system can be used for both on-line and on-site presentations and encourages the user to perform social activities, e. g., comment or like a slide. The author can al...

Article history: Received 15 January 2011 Received in revised form 1 July 2011 Accepted 3 July 2011 Available online 6 August 2011 We evaluated the long-term accuracy of predictions from a Delphic poll of the future of the mental health profession [1]. Six hundred participants provided predictions about the likely occurrence and probable time courses for 18 scenarios that could possibly have oc...