Zusammenfassung Das Schwerpunktprogramm „Sicherheit in der Informationsund Kommunikationstechnik“ wird seit Ende 1999 für die Dauer von sechs Jahren von der Deutschen Forschungsgemeinschaft gefördert. In diesem Schwerpunktprogramm forschen zwölf Universitäten und Forschungseinrichtungen an der Konzeption und der praktischen Entwicklung von Sicherheitsmechanismen und deren Integration zu einem s...

Few attempts to turn round ailing businesses are successful despite the advice from company doctors in their ‘airport books’. Managers do not yet have a robust framework to guide their rescue attempts. This paper describes and analyses a study of turnaround attempts in the engineering industry. Tentative concepts are developed and tested. Market manipulation is a process that was employed by th...

Airport security screening is a challenging task. In fact, according to several experts, the human operator is often the weakest link of the security system. In this article, the results of human factor studies conducted over the last five years involving several international airports in four European countries are summarized. It is shown how human operators can in fact become the strongest li...

We introduce a simulation model of the port of Calais with a focus on the operation of immigration controls. Our aim is to compare the cost and benefits of different screening policies. Methodologically, we are trying to understand the limits of discrete event simulation of rare events. When will they become “too rare” for simulation to give meaningful results?

In practice, it takes time—sometimes several years—for firms to increase their capital stocks (by investing in new plant and equipment) or reduce them (by selling off their capital at auction or not replacing it as it depreciates). Given that capital is such an important element of the production process, it is essential that economists understand the firm’s behavior both during the period when...

Population-based carrier screening for single gene disorders has been occurring since the 1960s, with each decade bringing new opportunities and challenges. In February 2008, approximately 125 scientists, clinicians, public health officials, and patient representatives gathered to consider population-based carrier screening in light of lessons learned and emerging technologies. The following do...

The chronic political uncertainty in Ukraine has created a type of formal stability built upon a ―play-with-the-rules‖ (instead of ―play-by-the-rules‖) archetype. This kind of stability may help consolidate national governance in the short-term. However, it is unable to provide long-term fundamentals for success, as it does not meet obvious challenges of institutional capacity-building, functio...

The one-loop vacuum polarization tensor is computed in QED with an external constant, homogeneous magnetic field at finite temperature. The Schwinger proper-time formalisme is used and the computations are done in Euclidian space. The well-known results are recovered when the temperature and/or the magnetic field are switched off and the effect of the magnetic field on the Debye screening is di...

To date, preconceptual and prenatal patients have been offered gene-by-gene, disorder-by-disorder carrier screening. Newer techniques allow screening of many disorders at one time. The goal of this review is to provide an overview of the current practice and future direction of carrier screening within the preconceptual/prenatal setting.