Denial of service resilience is an important practical consideration for key agreement protocols in any hostile environment such as the Internet. There are well-known models that consider the security of key agreement protocols, but denial of service resilience is not considered as part of these models. Many protocols have been argued to be denial-of-service-resilient, only to be subsequently b...

Dr. Blum's main thesis in this small volume is that from the origin of life, evolution has proceeded necessarily along certain channels, predetermined from without by the physical nature of the inorganic earth and by thermodynamic considerations from within. His interpretation of the free energy changes in biochemical reactions is particularly lucid. The exposition draws freely from the discipl...

Serpentinites are used in both exterior and interior locations, but not all serpentinites are equal: they vary in physical-mechanical behavior and are not all suitable for similar uses. The serpentinites most commonly used worldwide come from India, Pakistan or Egypt. Spain has traditionally quarried two ultramafic massifs, one in Galicia (Verde Pirineos) and one in Andalucía (Verde Macael). So...

We discuss distributed denial of service attacks in the Internet. We were motivated by the widely known February 2000 distributed attacks on Yahoo!, Amazon.com, CNN.com, and other major Web sites. A denial of service is characterized by an explicit attempt by an attacker to prevent legitimate users from using resources. An attacker may attempt to: “flood” a network and thus reduce a legitimate ...

Britain, currently chairing the G8 group of countries, has set an agenda for its term that highlights the problems of climate change as a result of emission of greenhouse gases. While there is still some scepticism about climate change, particularly in the US, the British prime minister, Tony Blair, is determined to flag up the issue and some senior scientists have also been outspoken about the...

Restraint and seclusion are unsavory topics within a discipline that cherishes verbal interventions. As such, the principles of use are haphazardly taught by in-house clinicians or private agencies. Policy standards were published in the 1980s, but they have not been officially updated, despite the fact that an American Psychiatric Association (APA) committee met in 2003 to overhaul the standar...

What is network denial of service (DoS), and why is it such a problem? This research project has sought to investigate these questions and look at the deeper questions such as can denial of service be removed, can it be detected and can network systems adequately respond to denial of service incidents should they become subjected to them? This paper describes some issues that make network denia...

PURPOSE Interest in assessing denial is still present, despite the criticisms concerning its definition and measurement. We tried to develop a questionnaire (Illness Denial Questionnaire, IDQ) assessing patients' and caregivers' denial in relation to their illness/disturbance. PATIENTS AND METHODS After a preliminary study, a final version of 24 dichotomous items (true/false) was selected. We...