SDS@hd – Scientific Data Storage

SDS@hd (Scientific Data Storage) is a central storage service for hot large-scale scientific data that can be used by researchers from all universities in Baden-Württemberg. It offers fast and secure file system storage capabilities to individuals or groups, e.g. in the context of cooperative projects. Fast data accesses are possible even in case of a high number of small files. User authentication and authorization are implemented in terms of the federated identity management in Baden-Württemberg allowing researchers to use their existing ID of their home institution transparently for this service. Data protection requirements can be fulfilled by data encryption and secure data transfer protocols. The service is operated by the computing center of Heidelberg University

SDS@hd – Scientific Data Storage

SDS@hd (Scientific Data Storage) is a central storage service for hot large-scale scientific data that can be used by researchers from all universities in Baden-Württemberg. It offers fast and secure file system storage capabilities to individuals or groups, e.g. in the context of cooperative projects. Fast access is possible from data generating facilities like microscopes as well as from data analysis systems llke HPC systems. User authentication and authorization are implemented in terms of the federated identity management in Baden-Württemberg allowing researchers to use their existing ID of their home institution transparently for this service. Data protection requirements can be fulfilled by data encryption and secure data transfer protocols. The service is operated by the computing center of Heidelberg University

Grundlagen des Autonomen Rechnens

Das vegetative Nervensystem (engl. autonomous nervous system) des Menschen kann das, wovon in der IT-Industrie noch geträumt wird. Abhängig von der aktuellen Umgebung und Tätigkeit reguliert das vegetative Nervensystem mandatorische Körperfunktionen wie Herzfrequenz und Atmung. Reflexe, die dem Selbstschutz dienen, werden automatisch ausgelöst. Verletzungen heilen von selbst, ohne dass man seine normalen Tätigkeiten dafür unterbrechen müsste. Im Rahmen des Seminars „Autonomic Computing“ im Sommersemester 2003 am Institut für Programmstrukturen und Datenorganisation der Universität Karlsruhe wurden Grundlagen dieses Autonomen Rechnens besprochen. Als Basis für Selbstkonfiguration und Selbstoptimierung werden in „Kontextbewusstsein: Ein Überblick“ Techniken zur Erfassung des physischen und sozialen Kontexts einer Anwendung erläutert. Die dienstorientierte Architektur und konkrete Implementierungen wie z.B. UPnP, Jini oder Bluetooth werden in „Aktuelle Technologien zur Realisierung dienstorientierter Architekturen“ behandelt. Die Arbeit „Service- Orientierung und das Semantic Web“ beschreibt, wie Semantic Web Technologien zur Beschreibung von Web Services verwendet werden können mit dem Ziel der automatischen Dienstfindung. Danach wird der Begriff „Selbstbewusstsein“ in bezug auf Software anhand zweier komplementärer Forschungsprojekte definiert. Technologien zur Überwachung des Laufzeitverhaltens von Rechnersystemen mit dem Ziel der selbstständigen Optimierung sind Gegenstand der Arbeit „Selbst-Überwachung und Selbst-Optimierung“. Der Artikel „Selbst-Schutz“ fasst die Sicherheitsanforderungen zusammen, die an ein autonomes Computersystem gestellt werden müssen und die Techniken, um solche Anforderungen zu erfüllen. Ansätze aus dem Bereich wiederherstellungsorientiertes- und fehlertolerantes Rechnen werden in „Selbst-Heilung“, „ROC – Recovery Oriented Computing“ und „Recovery Oriented Computing: Modularisierung und Redundanz“ vorgestellt. Alle Ausarbeitungen und Präsentationen sind auch elektronisch auf der diesem Band beiliegenden CD oder unter www.autonomic-computing.org verfügbar

Proceedings of the 4th bwHPC Symposium

The bwHPC Symposium 2017 took place on October 4th, 2017, Alte Aula, Tübingen. It focused on the presentation of scientific computing projects as well as on the progress and the success stories of the bwHPC realization concept. The event offered a unique opportunity to engage in an active dialogue between scientific users, operators of bwHPC sites, and the bwHPC support team

Juggling with Proximity and Distance: Collaborative Innovation Projects in the Danish Cleantech Industry.

Studies increasingly apply a multidimensional proximity framework in the analysis of collaborations between actors. This article explores the influence of collaboration motives on the desired proximity characteristics of partnerships in innovation projects based on 50 interviews with representatives from Danish cleantech firms. How search criteria along proximity dimensions differ depends on the purposes of the collaborations. In this way, the analysis distinguishes between the types of collaboration, where geographical proximity is considered highly important and those where geographically distant partners are preferred. Geographical proximity plays an important role in partnerships motivated by interaction around actual product development and knowledge creation, while long-distance relationships appear to be important for partnerships motivated by market access and cost considerations. The insight that the desired proximity characteristics of partnerships are indeed contingent on the motive for collaborating highlights how the proximity framework can be applied in the analysis of firm decision making

Effects of DSP4 and methylphenidate on spatial memory performance in rats

In this experiment, we have investigated the spatial memory performance of rats following a central noradrenaline depletion induced by three different doses of the neurotoxin N-(2-chloroethyl)-N-ethyl-2-bromobenzylamine (DSP4) and following administration of three different doses of methylphenidate (MPH). The rats were required to find food pellets hidden on a holeboard. The sole administration of DSP4 induced only minor cognitive deficits. However, the treatment with MPH increased the reference memory error, the impulsivity and the motor activity of the DSP4-treated rats. Since the noradrenergic terminals in a DSP4-treated rat are significantly reduced, the administration of MPH has little effect on the noradrenergic system and increases dopaminergic rather than noradrenergic activity, resulting in an imbalance with relatively high dopaminergic and low noradrenergic activities. It is suggested that a reduction of noradrenaline and an increase of dopamine induce ADHD-related deficits and that the depletion of noradrenaline is not sufficient for an appropriate rat model of ADHD