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Verbesserung der Produktqualität durch eine frühe Anforderungsvalidierung mithilfe der virtuellen Realität
(Otto-von-Guericke-Universität, Fakultät für Maschinenbau, 2015)
If features meet customer requirements to 100%, one speaks about quality. In the context of the requirement identification various methods are used to generate the conscious customer requirements. Hidden (unconscious) customer requirements are not taken into account. From collected customer requirements, however, the later features can be derived. Therefore, in the developed product it often comes to a deviation from the characteristics required by the customer. Any deviation results in a lower product quality. The ...
Dissertation
Führung von Mitarbeitenden in Zeiten digitaler Transformationsprozesse
(2019-08)
Diese Arbeit befasst sich mit der Frage, welche Veränderungen sich zukünftig für Führungskräfte bei
der Mitarbeiterführung durch digitale Transformationsprozesse ergeben werden. Hierzu werden aus
der Literatur sowohl klassische, gleichbleibende als auch sich wandelnde Führungsanforderungen aufgezeigt
und Hypothesen abgeleitet. Die Testung der aufgestellten Hypothesen erfolgt mithilfe einer
quantitativen Befragung. Dafür wurden zunächst sieben Themenfelder definiert, anschließend systematisch
analysiert und um ...
Aufsatz
Influence of the degree of crystallinity and the surface free energy on the adhesion properties of different PLA/PBS blends in multicomponent injection molding
(2020-01-10)
Biocomposites made of biodegradable polymers have grown in interest due to their environmentally friendliness, considering that non-biodegradable polymers waste conduces to pollution, displaying high environmental impact in climatic changes. Therefore, in the presented study, biodegradable Poly (lactic acid) (PLA) and poly (butylene succinate) (PBS) were investigated as a series of PLA/PBS melt-blending compounds with the weight ratios of 50/50, 60/40, 70/30, 80/20 and 90/10. In a two-component injection molding ...
Aufsatz
Relaxation properties of polyoxymethylene and ethylene–octene copolymer blend in solid and melt states
(2012-08-30)
Rheological properties of polyoxymethylene (POM) and ethylene–octene copolymer (EOC) in solid and melt states were investigated. Blends were prepared with a twin screw extruder at broad component wt-to-wt ratios (10, 30, 50, 70, 90 wt% of EOC). The morphology as well as calorimetric, rheological, and elastic properties of the blends were studied. The investigation showed that POM/EOC blends were heterogeneous in nature and had a broad phase transition region between 30 and 70 wt% of POM. Because during processing ...
Aufsatz
Predictive Simulation-based Optimisation of Cooling System Including a Sprinkler Tank
(2018)
Prerequisite for an efficient cooling energy system is the knowledge and the optimal combination of different operating conditions of individual compression and free cooling chillers. The performance of cooling systems depends on its part load performance and its condensing temperature, which are often unknown. Recorded energy data remains unused and manufacturers' data significantly differs from the real performance. For this purpose, manufacturer and real data are combined and continuously adapted to form partial ...
Aufsatz
Energy Efficiency Measures for Batch Retort Sterilization in the Food Processing Industry
(2016)
The purpose of this study is to highlight the energy saving potentials of a batch retort sterilization process operated by steam and to develop concepts for improving its energy efficiency. By using the methodical approach of the Onion Diagram and the recovery of low grade heat sources, four comprehensive improved energy efficiency concepts have been developed. Two concepts increase the initial product temperature resulting in lower transient steam consumption rates and a decreased energy demand. The other two options ...
Dissertation
Persönlichkeitseigenschaften guter BeobachterInnen – eine experimentelle Studie anhand direkter und indirekter Messmethoden
(2020)
Die vorliegende Dissertation befasst sich mit der Frage, wer, mit welcher Persönlichkeit, andere Personen hinsichtlich ihrer Persönlichkeit besonders gut einschätzen kann. Dazu wurde ein experimentelles Setting geschaffen, bei dem 31 als BeobachterInnen fungierende ProbandInnen sechs weitere ProbandInnen anhand einer auf Video aufgezeichneten, assessmentcenter-ähnlichen Gruppendiskussion möglichst akkurat hinsichtlich ihrer Persönlichkeit einschätzen sollten. Dabei wurde sowohl die Persönlichkeit der DiskutantInnen ...
Aufsatz
Process and utility systems integration and optimisation for ultra-low energy milk powder production
(2017-04-26)
This study applies a Total Site Heat Integration approach in conjunction with a detailed process and utility model, to develop an innovative ultra-low energy milk powder plant design. The basis for the analysis is a state-of-the-art modern milk powder plant that requires 5265 MJ/tp of fuel and 210.5 kWh/tp (58.5 MJe/tp) of electricity. The model of the modern milk powder plant was validated against industrial data and changes to process and/or utility systems are targeted and implemented into the model to understand ...
Dissertation
Decision Making in Projects in Cultural Context
(2020)
This study presents the investigation about the decision making styles of German and Pakistani managers in national cultural context who have been working on projects. It becomes very important to understand the national culture when doing the international projects. Different studies have shown that national culture has significant impact upon managerial practices especially decision making. Germany is a developed country and various German companies perform projects in developing countries like Pakistan. In projects, ...