22. juli – min historie

Juli 1994 Karin

Placebo. Historie, biologi og effekt

Since 1950 or so, placebos and their effect have generated a considerable interest in certain medical communities, in particular among psychiatrists and the designers of clinical trials, yet the only significant external study of this phenomenon to appear has been Howard Brody's doctoral investigation, Placebos and the philosophy ofmedicine, published in 1980. In 1997, however, three book-lengt...

Kryptographische Hashfunktionen: Historie, Angriffe und aktuell sichere Standards

Hashfunktionen sind das " Arbeitspferd der Kryptographie ". Forschung und der IT-Sicherheit in den Bereich der industriellen Embedded-Entwicklung nicht in der Geschwindigkeit, die für die Sicherheit vernetzter Automobile wünschenswert wäre.

A Hybrid Min-min Max-min Algorithm with Improved Performance

The high cost of supercomputers and the need for large-scale computational resources has led to the development of network of computational resources known as Grid. To better use tremendous capabilities of this large scale distributed system, effective and efficient scheduling algorithms are needed. Many such algorithms have been designed and implemented. We introduce a new scheduling algorithm...

Min-up/min-down polytopes

In power generation and other production settings, technological constraints force restrictions on the number of time-periods that a machine must stay up once activated, and stay down once deactivated. We characterize the polyhedral structure of a model representing these restrictions. We also describe a cutting-plane method for solving integer programs involving such min-up and min-down times ...