Suche
Anzeige der Dokumente 1891-1900 von 1918
Aufsatz
Verbal facilitation effects instead of verbal overshadowing in face memory of 4- to 6-year olds
(2015)
Research on eye witness memory in older children and adults revealed that verbally describing unfamiliar faces impairs later recognition of these faces, known as the “verbal overshadowing effect”. The aim of this study was to investigate whether a verbal overshadowing effect occurs in 4- to 6-year olds, too, and whether visualization (i.e., drawing the seen face) might elicit a visual overshadowing effect. Instead of a verbal overshadowing effect, a verbal facilitation effect was revealed with verbal intelligence ...
Dissertation
Das New Public Management als Grundlage für eine effiziente und effektive Verwaltung, untersucht am Beispiel der Verwaltung von Hoima, Uganda
(kassel university press, 2010-08-09)
In der Dissertation wird die Möglichkeit untersucht, die deutschen Erfahrungen mit dem New Public Management (NPM) für die Entwicklung der Verwaltung in Uganda nutzbar zu machen. Inhaltlich betrifft die Arbeit 3 Hauptkomponenten: Das NPM als Konzept für die öffentliche Verwaltung, die Erfahrungen mit dem NPM in Deutschland, die Transfermöglichkeit des NPM und insbesondere der deutschen Erfahrungen mit dem NPM nach Uganda, wobei auch die deutschen Erfahrungen mit der Verwaltungshilfe nach dem 1990 erfolgten Beitritt ...
Buch
Modellierung und Simulation viskoelastischer Polymerschmelzen
(kassel university press, 2012)
Die vorliegende Dissertation behandelt Kunststoffschmelzen als viskoelastische Fluide, bzw. im allgemeinen als Nicht-Newtonsche Fluide. Schmelzen dieser Art zeigen in der Tat viskoelastisches Verhalten, aber auch u.a. Strukturviskosität bzw. Scherentzähung und
Normalspannungsdifferenzen.
Diese Fülle an verschiedenen, beobachtbaren Phänomene werden mit linearen Ansätzen nicht mehr ausreichend beschrieben. In dieser Arbeit werden Modelle eingesetzt, die auf makroskopischen und mikroskopischen Konzepten basieren. Dazu ...
Aufsatz
Cyclic degradation of Co49Ni21Ga30 high-temperature shape memory alloy - On the roles of dislocation activity and chemical order
(2015)
Conventional shape memory alloys (SMAs), such as binary Ni-Ti, are typically limited to service temperatures below 100 °C. Recent studies on Co-Ni-Ga high temperature (HT) SMAs revealed the potential that these alloys can be used up to temperatures of about 400 °C. Analysis of the cyclic functional properties showed that degradation in these alloys is mainly triggered by intensive dislocation motion. However, data on the cyclic stress-strain response and the mechanisms leading to functional degradation of Co-Ni-Ga ...
Aufsatz
On the Effect of Quenching on Postweld Heat Treatment of Friction-Stir-Welded Aluminum 7075 Alloy
(2019)
This work focuses on the effect of postweld heat treatment (PWHT) on the mechanical properties and microstructural evolution of aluminum 7075 alloy processed via friction stir welding (FSW). FSW is known to be capable of grain refinement in the nugget zone (NZ). Two different quench media (water and air) were employed for PWHT. Regardless of the quench media, the PWHT led to the occurrence of grain growth in the NZ of the FSWed aluminum 7075 alloy. Abnormal grain growth occurred in the water quenched specimen. It is ...
Aufsatz
Cyclic Deformation Response of Ultra-fine Grained Titanium at Elevated Temperatures
(2019)
This study focuses on the high-temperature cyclic deformation response (CDR) of ultra-fine grained (UFG) titanium of commercial purity (grade 4) processed via equal channel angular extrusion as a severe plastic deformation method. Low-cycle fatigue experiments were conducted at elevated temperatures up to 600 °C and at strain amplitudes ranging from 0.2% to 0.6%. Besides temperature and strain amplitude, the influence of two processing routes (8BC and 8E) on the fatigue characteristics of UFG Ti was examined. It is ...
Aufsatz
Effect of grain size on the very high cycle fatigue behavior and notch sensitivity of titanium
(2019)
The very high-cycle fatigue performances of coarse-grained and ultrafine-grained titanium samples with different geometries at ambient temperature and various stress amplitudes were investigated. Severe plastic deformation improves monotonic strength of titanium at the cost of a loss in ductility. Ultrafine-grained titanium demonstrates a superior fatigue performance compared to that of coarse-grained counterparts in the high-cycle fatigue regime, however, suffers notch sensitivity. Furthermore, in the very high-cycle ...
Working paper
Exchange of Ideas #2
(2017)
This catalogue is a publication of the University of Kassel to conclude the guest professorship of Yael Mer during the academic year 2015/2016. It is digitally published and is the second in a series of guest professor-catalogues for the Product Design Course of the School of Art and Design Kassel.
Working paper
Exchange of Ideas #1
(2015)
This catalogue is a publication of the University of Kassel to conclude the guest professorship of Ineke Hans during the academic year 2014/2015. It is digitally published and is the first in a series of guest professor catalogues for the Product Design Course of the School of Art and Design Kassel.