The key role of models in Model-Driven Engineering (MDE) provides a new landscape for dealing with traceability. However, despite the certain maturity reached by some MDE tools, providing efficient views of traceability data is still in its early stages. To contribute in this direction, this work introduces the visualization mechanisms provided by iTrace, a framework for the management of trace...

A denial-of-service (DoS) / distributed-denial-of-service (DDoS) attack may result in rapid resource depletion along the attack path. For stepping-stone and masquerading techniques typically used in DoS/DDoS attacks such as internet protocol (IP) or Media Access Control (MAC) address spoofing, tracing the intrusion back to the true attacker becomes a challenging task for network security engine...

Probabilistic packet marking (PPM) is a technique designed to identify packet traffic sources with low storage and processing overhead on network routers. In most previous PPM approaches, individual path messages carry only partial path information. These methods are susceptible to “path falsification” attacks, which greatly reduce their effectiveness. This work proposes a path-falsification-at...

The problem of identifying the sources of a denial of service attack is among the hardest in the Internet security area, especially since attackers often use incorrect, or spoofed, source IP addresses. In this paper we present the results from a comparison between some of the most promising traceback techniques proposed to solve this problem. Our goal was to evaluate and analyse the most promis...

AIM To evaluate the intra-operator repeatability in healthy subjects using the WAM-5500 auto-kerato/refractometer and the iTrace aberrometer, to compare the refractive values and the subjective refraction obtained with both devices and to determine which of these three spherocylindrical corrections allows the subject to achieve the best visual comfort. METHODS Forty-two non-presbyopic healthy...

the quality of wastewater generated in any process industry is generally indicated by performance itrace metals in the aquatic environment have to date come essentially from naturally occurring geochemical resources. however, this has been enhanced by anthropogenic activities resulting in pollution. consequently, correlations and partitioning of trace metals in the dissolved phase, suspended pa...