Satellite link characteristics cause reduced performance in TCP data transfers. In this paper we present SaTPEP, a TCP Performance Enhancing Proxy which attempts to improve TCP performance by performing connection splitting. SaTPEP monitors the satellite link utilization, and assigns to connections window values that reflect the available bandwidth. Loss recovery is based on Negative Acknowledg...

The peculiar characteristics of the satellite links affect performance of the TCP protocol, largely used by most of the Internet applications. Then, to achieve good performance TCP Performance Enhancing Proxy mechanisms are often used. In principle, a TCP PEP mechanism accelerates TCP transfers requiring access to TCP headers in intermediate nodes. As a drawback, this conflicts with IPsec, whic...

Doping in sport is a well-known phenomenon that has been studied mainly from a biomedical point of view, even though psychosocial approaches are also key factors in the fight against doping. This phenomenon has evolved greatly in recent years, and greater understanding of it is essential for developing efficient prevention programmes. In the psychosocial approach, attitudes are considered an in...

BACKGROUND The World Anti-Doping Agency (WADA) is introducing enhancements to doping investigations in its 2015 Code, which include improved sharing of information between antidoping organisations (including sporting bodies) and enhanced accountability of athlete support staff. These additions will improve the control of links between sports doping and organised crime. In February 2013 the Aust...

Performance enhancing proxies have drawn considerable interests from the network community as an e ective approach to improve user experience in cellular networks. However, previous research has been focusing on the design of proxy servers as well as the functions that these servers provide. In this paper, we study the placement of proxy servers, especially the approach of incorporating proxies...

In light of the World Anti Doping Agency's 2013 Code Revision process, we critically explore the applicability of two of three criteria used to determine whether a method or substance should be considered for their Prohibited List, namely its (potential) performance enhancing effects and its (potential) risk to the health of the athlete. To do so, we compare two communities of human guinea pigs...

Performance enhancing proxies (PEPs) are widely used to improve the performance of TCP over high delaybandwidth product links and links with high error probability. In this paper we analyze the performance of using TCP connection splitting in combination with web caching via traces obtained from a commercial satellite system. We examine the resulting performance gain under different scenarios, ...

The World Anti-Doping Code states that, there is an intrinsic value about sports that is the celebration of the human spirit, body and mind, and is reflected in values other than winning or being the first in any sports game. The spirit of sports includes ethics, fair play and honesty. Anti-doping practices are based on this ethical ground and supported all through the world. However, recently ...

In disaster management scenarios with seriously damaged, not existing, or saturated communication infrastructures satellite communications can be an ideal means to provide connectivity with unaffected remote terrestrial trunked radio (TETRA) core networks. However, the propagation delay imposed by the satellite link affects the signalling protocols. This paper discusses the suitability of using...

In order to protect the integrity of horse racing in Illinois, a complex testing of urine and blood specimens collected post-race from winning and special designation horses is continuously conducted. The initial screening by immunoassays was followed by the confirmation on presumptive positive samples. Instrumental screening was also conducted. Perimortem and postmortem specimens and special e...