Christi Leiden in einer Vision geschaut

Vision in Hyphema

Leiden Observatory

In this paper we summarize the main properties of the ENACS (the ESO Nearby Abell Cluster Survey), which was one of the ESO Keypro-grammes carried out in the first half of the 1990's, and we discuss some recent work on the properties of the galaxies in the rich clusters in the ENACS sample. We stress the importance of the ENACS sample as a local , volume-limited sample of rich ACO clusters, whi...

Universiteit Leiden

Modern day routing planners are optimized to find the shortest route. This allows us to travel between two places efficiently. However, traveling is not only a means of transportation between two places but can be a recreational activity. In this work a way of generating bicycle routes that are not only based on distance, but consider other factors as well, is proposed. The additional usage of ...

The Brain Attack Surveillance in Corpus Christi (BASIC) Project

Background and Purpose—Mexican Americans are the largest subgroup of Hispanic Americans, now the most numerous US minority population. We compared access to care, acculturation, and biological risk factors among Mexican American and non-Hispanic white stroke patients and the general population. Methods—The Brain Attack Surveillance in Corpus Christi project is a population-based stroke surveill...

Universiteit Leiden

In 1999, Page et al. described their algorithm — PageRank — for scoring pages in their web search engine, Google. Already from the start it was clear that due to the large number of pages to be ranked, the PageRank algorithm’s efficiency and optimal performance was and is a critical feature. One method of increasing the efficiency of calculations is based on MapReduce, also originally published...