University of Paderborn

About: University of Paderborn is a education organization based out in Paderborn, Nordrhein-Westfalen, Germany. It is known for research contribution in the topics: Computer science & Context (language use). The organization has 6684 authors who have published 16929 publications receiving 323154 citations.

Procrastination in Different Life-Domains: Is Procrastination Domain Specific?

Abstract: Procrastination, putting off until tomorrow what one had intended to do today, is a well-known phenomenon in everyday life. In an attempt to understand the character of procrastination, a large body of research has been accumulating over the last 40 years. The present study was to evaluate the need to distinguish between procrastination in different life-domains by gathering first hints as to whether procrastination is domain specific or domain general. In an online survey on 260 students (mean age = 23.56; SD = 3.74) the procrastination frequency in 6 different life-domains (academic and work, everyday routines and obligations, health, leisure, family and partnership, social contacts) was examined. Confirmatory factor analysis (CFA) and the analysis of mean-level differences revealed that procrastination is domain specific, but not extremely so. The results encourage further investigations into the domain specificity of procrastination and suggest that future diagnoses of and interventions for procrastination will profit from considering the life-domain procrastination occurs in.

Efficient, distributed data placement strategies for storage area networks (extended abstract)

Abstract: In the last couple of years a dramatic growth of enterprise data storage capacity can be observed. As a result, new strategies have been sought that allow servers and storage being centralized to better manage the explosion of data and the overall cost of ownership. Nowadays, a common approach is to combine storage devices into a dedicated network that is connected to LANs and/or servers. Such networks are usually called storage area networks (SAN). A very important aspect for these networks is scalability. If a SAN undergoes changes (for instance, due to insertions or removals of disks), it may be necessary to replace data in order to allow an efficient use of the system. To keep the influence of data replacements on the performance of the SAN small, this should be done as efficiently as possible.In this paper, we investigate the problem of evenly distributing and efficiently locating data in dynamically changing SANs. We consider two scenarios: (1) all disks have the same capacity, and (2) the capacities of the disks are allowed to be arbitrary. For both scenarios, we present placement strategies capable of locating blocks efficiently and that are able to quickly adjust the data placement to insertions or removals of disks or data blocks. Furthermore, we study how the performance of our placement strategies changes if we allow to waste a certain amount of capacity of the disks.

Autonomous Sensor Nodes for Aircraft Structural Health Monitoring

Abstract: The current trend towards the use of novel materials and design concepts for aircraft structures may demand structural health monitoring (SHM) systems in the future. Wireless sensor networks (WSNs) could fulfill the required monitoring tasks concerning fatigue, damage or stress of structural parts. Autonomous sensor nodes (ASNs) are key elements for a WSN in order to allow a self-sufficient and maintenance free operation, without any complex wiring for power supply or communication purposes.