The passage of Brownian motion through a bottleneck in a bounded domain is a rare event, and as the bottleneck radius shrinks to zero the mean time for such passage increases indefinitely. Its calculation reveals the effect of geometry and smoothness on the flux through the bottleneck. We find new behavior of the narrow escape time through bottlenecks in planar and spatial domains and on a surf...

In den letzten Jahren wurden agile Methoden wie eXtreme Programming zunehmend populär. Parallel dazu stützen sich mehr und mehr Unternehmen auf Reifegradmodelle, um ihre eigenen Prozesse oder die der Zulieferer zu analysieren und zu verbessern, nachdem sich immer mehr die Ansicht durchsetzt, dass viele Projektmisserfolge undisziplinierten, inkonsistenten Prozessen zugeschrieben werden können. I...

Experimental results show that in large complex networks (such as internet, social or biological networks) there exists a tendency to connect elements which have a common neighbor. In theoretical random graph models, this tendency is described by the clustering coefficient being bounded away from zero. Complex networks also have power-law degree distributions and short average distances (small ...

Experimental results show that in large complex networks such as internet or biological networks, there is a tendency to connect elements which have a common neighbor. This tendency in theoretical random graph models is depicted by the asymptotically constant clustering coefficient. Moreover complex networks have power law degree distribution and small diameter (small world phenomena), thus the...

An empirically veri1ed characteristic of the expanding area of Internet is the long tailness of phenomena such as cpu time to complete a job, call holding times, 1les lengths requested, inter-arrival times and so on. Extreme values of the above quantities are liable to cause problems to the e'cient operation of the network and call for e7ective design and management. Extreme-value analysis is a...

This paper is based on the observation that the areas of semistructured databases [1] and mobile computation [3] have some surprising similarities at the technical level. Both areas are inspired by the need to make better use of the Internet. Despite this common motivation, the technical similarities that arise seem largely accidental, but they should still permit the transfer of some technique...

although the internet has become one of the most important information resources for university students, excessive internet use can be defined as uncontrolled and harmful use of the internet, in other words, internet addiction. internet addiction (ia) can be described as a maladaptive preoccupation with internet use impairing social, occupational and other areas of a person’s functioning. rece...

Introduction: Extreme weather or climate, including heat waves and cold waves, is considered a health issue causing adverse effects on health, such as cardiovascular diseases (CVDs), mortality and morbidity. Thus, this systematic review aimed to study the impacts of extreme ambient temperature on cardiovascular outcomes. Material and Methods: This study was carried out based on the Preferred R...