Raymond Djaloeis

Analysis of human reliability in computer-aided design

Human reliability is an essential quality of Computer Aided Design (CAD) in new product development (NPD). Based on the proposals of the German VDI 2221 guideline for CAD product development, a semiotic human-machine model is adapted to examine human reliability in new product development, especially regarding time constraints. For this goal, a CAD experiment (n=116) with three VDI-2221 compliant modeling, design and assembly tasks was carried out and empirically analyzed.

Human reliability and workload in product design with different frequencies of interruption

Product design requirements are often volatile and require human input. To create a deeper understanding of human reliability in product design, a phase-dependent multi aspect taxonomy for the description and analysis of human reliability in product design has been developed. Based on this theory, different research hypotheses regarding the effects of the variable “frequency of interruption” on the quota of fulfilled product requirements and on workload, frustration and effort were formulated and empirically analyzed by conducting a laboratory experiment with 79 students from a master program in mechanical engineering of RWTH Aachen University. The results are presented in this paper.

A New Method for Human Reliability Analysis in New Product Development

Human reliability is an essential quality of the complex and highly dynamic domain of new product development (NPD), because a low level of human error positively influences quality, cost and safety of a product. However, there is lack of empirical research in this area, especially regarding methodological approaches. In this paper, based on the abstraction hierarchy and the multi-facet human error taxonomy of Rasmussen as well as on the requirements of systematic engineering design by Pahl et al., a theory for human reliability in NPD is described. Based on this theory, a framework for a large-scale laboratory experiment (n=111) with three NPD-compliant design tasks was developed, which focused on the effects of limited available time on human reliability. The experiment provided a broad range of empirical results, which were quantitatively analyzed, and serves as the base for follow-up NPD experiments.

Improving Result Quality in Engineering Design by Better Linking Employee’s and Task’s Features

Human interference with engineers’ activities negatively influences engineering tasks’ success. Regarding human influence is therefore a promising approach to improve that success. This Paper examines the aspect of man-induced disturbances in Systematic Engineering Design processes. Based on a lab study done with engineering students and interviews with engineers in industry a model of how to link engineering tasks with the most appropriate problem solving design engineer is developed. To underline the importance of the model, specific background information on Design Theory approaches is given.

Qualifikationen und Kompetenzen in ausgewählten Bereichen der Dienstleistungsfacharbeit

In den Beitragen von Niethammer, Baukrowitz, Diart und Stock/Hilger in diesem Band werden Veranderungen fur bestimmte Dienstleistungen auf Branchenebene sowie die daraus resultierenden Konsequenzen fur den konkreten Arbeitsplatz aufgezeigt. Es werden in den vorhergehenden Beitragen aus den Branchen und Bereichen der Ver- und Entsorgungswirtschaft, Energieberatung, Personennahverkehr, IT–Branche, Wellness, Kinderbetreuung und Altenpflege als generelle Wandlungstreiber eine zunehmende Konkurrenz, Globalisierung, Veranderungen in der Unternehmensstruktur, veranderte Nachfrage- und Beschaftigungsstruktur, technologische Weiterentwicklungen, Wertewandel und demografischer Wandel herausgestellt. In diesem Kontext mussen auch die beruflichen Strukturen den damit einhergehenden, neuen Anforderungen gerecht werden.

Strategien der Professionalisierung in der Energieberatung für die mittlere Qualifikationsebene

Durch die Olkrise in den 1970er Jahren wurde erstmals die Begrenzung der Energieressourcen ins Bewusstsein der Bevolkerung gerufen und somit auch der Handlungsbedarf in Bezug zu Energieeinsparmasnahmen. Das erste Energieeinspargesetz wurde 1976 beschlossen und bildete die Grundlage fur weitere Verordnungen mit dem Ziel der Senkung des Energieverbrauchs und der CO

Kompetenzdiagnose in der Energieberatung

Die Domane der Energieberatung ist aus Perspektive der Dienstleistungs- und Professionsforschung ein noch weitgehend unerforschtes Feld. In dieser volatilen Branche bestehen kaum verwertbare Vorarbeiten.