Current anonymous e-mail systems offer unconditional anonymity to their users which can provoke abusive behaviour. Dissatisfied users will drop out and liability issues may even force the system to suspend or cease its services. Therefore, controlling abuse is as important as protecting the anonymity of legitimate users when designing anonymous applications. This paper describes the design and ...

The spatial distribution of most species in ecosystems is nonuniform. New theories try to explain patterns observed at multiple scales in terms of neutral processes such as birth, death, and migration. We have devised an experimental, niche-free ecosystem where the amplitude of neutral patchiness can be precisely measured. Spatial distribution of species in this system is extremely clustered. W...

We are building a collaborative virtual environment for scientific visualization and distant learning. The paper introduces visualization systems for collaborative learning, and suggests to categorize them to identify weaknesses. The paper exemplifies that weaknesses can be found in present systems, and proposes as an alternative to them a use case-driven approach, supplemented by rapid prototy...

Nucleon induced nuclear reactions in microelectronic devices is a real concern for the radiation community. These nuclear reactions can provoke failures in critical applications in planes and satellites. Nuclear codes are very powerful tools which are required to calculate the number of failures of a given device in a given environment. We present the MC-RED code which is dedicated to the Monte...

BACKGROUND Worldwide used pesticides containing different adjuvants like Roundup formulations, which are glyphosate-based herbicides, can provoke some in vivo toxicity and in human cells. These pesticides are commonly found in the environment, surface waters and as food residues of Roundup tolerant genetically modified plants. In order to know their effects on cells from liver, a major detoxifi...