This study examines the differences between two groups of parasuicide patients: 'first-timers' (patients admitted to hospital following their first overdose) and 'repeaters' (patients admitted with an overdose who had made at least one previous suicide attempt). The two patient groups were compared for factors known to increase the risk of parasuicide as well as for the experience of self-repor...

The Asynchronous Transfer Mode (ATM) is a network technology that can satisfy the quality-of-service requirements of many different types of traffic. The ability of ATM to handle many different types of traffic and its ability to operate at high bandwidths position it to be one of the core technologies behind future broadband wide area networks and the Internet. To provide quality-of-service gu...

In reliable multicast applications, packet loss needs to be reported by having group members send feedback messages. This results in the well-known feedback implosion problem. The available feedback control mechanisms can be classified as timer based, hierarchy based, and router assisted, among which the timer-based approach is more preferable due to its simplicity and flexibility. This article...

Poxviruses continue to cause serious diseases even after eradication of the historically deadly infectious human disease, smallpox. Poxviruses are currently being developed as vaccine vectors and cancer therapeutic agents. Resveratrol is a natural polyphenol stilbenoid found in plants that has been shown to inhibit or enhance replication of a number of viruses, but the effect of resveratrol on ...

Stilbenoids, including resveratrol and its methylated derivatives, are natural potent antioxidants, produced by some plants in trace amounts as defense compounds. Extraction of stilbenoids from natural sources is costly due to their low abundance and often limited availability of the plant. Here we engineered the yeast Saccharomyces cerevisiae for production of stilbenoids on a simple mineral m...

We argue that the design principles of the TCP timeout algorithm are based solely on RTT estimations and may lead to flow synchronization, unnecessary retransmission effort and unfair resource allocation. We present a new Window-Based Retransmission Timeout algorithm (WB-RTO) for TCP, which exhibits two major properties: (i) it cancels retransmission synchronization, which dominates when resour...

In this paper, we develop theoretical, as well as practical, tools for the synthesis and the veriication of processes that contain n timers. Such tools are equally adapted to numerical calculations as to symbolical ones, thus allowing for parametric analysis. The results we have obtained rely on a simple and eecient representation of the states of an automaton that recognizes the behaviors of t...