Suchergebnisse

In Zeiten der Globalisierung und Digitalisierung führen Silodenken und Protektionismus zu Wettbewerbsnachteilen aller Partner eines Wertschöpfungsnetzwerkes. Ineffizienzen zeigen sich zum Beispiel durch hohen Ausschuss und geringe Margen der Zulieferer für die Produktion hochpräziser Produkte. Der Beitrag zeigt auf, wie Kollaboration in der Supply Chain mit unternehmensübergreifenden Qualitätsregelstrategien zur Steigerung der Qualität und Senkung der Qualitätskosten beiträgt.
 
In times of globalization and digitalization, silo thinking and protectionism lead to competitive disadvantages for all partners of the production network. Inefficiencies can be seen, for example, in high reject rates and low supplier margins for the production of high precision products. This article shows how collaboration in the supply chain with cross-company quality control loops contributes to increasing quality and reducing quality costs.

Subjects performed a simulated quality control inspection task requiring rapid visual scanning of electrical schematics to detect defects. Self-paced subjects could press a button to delay the progression of circuits, while machine-paced subjects, who could not control task timing, served as a yoked-control group. All subjects were given Rotter's (1966) Locus of Control Scale. The personality variable was found to interact with the pacing variable: self-paced internals had a higher criterion than self-paced externals, and thus made fewer false alarms; machine-paced internals had a lower criterion and made more false alarms than machine-paced externals. The results indicate that locus of control may be related to response bias or criterion in a detection task, and that this personality variable may be useful in selecting quality control inspectors.

AbstractQuality control measures for regionally purchased treatment chemicals in Severn Trent Water Ltd apply from the point of manufacture through to their arrival and acceptance on a water‐treatment works. This approach involves a formalized examination of the control systems of treatment chemical suppliers and the introduction of standard documented acceptance procedures at each treatment works. These measures are intended to not only provide a high degree of reassurance to customers, but to ensure that staff of Severn Trent Water are purchasing and receiving cost‐effective materials which are of an acceptable quality in terms of active constituents and background contaminants, before use in the treatment of water

AbstractWe consider design of control charts in the presence of machine stoppages that are exogenously imposed (as under jidoka practices). Each stoppage creates an opportunity for inspection/repair at reduced cost. We first model a single machine facing opportunities arriving according to a Poisson process, develop the expressions for its operating characteristics and construct the optimization problem for economic design of a control chart. We, then, consider the multiple machine setting where individual machine stoppages may create inspection/repair opportunities for other machines. We develop exact expressions for the cases when all machines are either opportunity‐takers or not. On the basis of an approximation for the all‐taker case, we then propose an approximate model for the mixed case. In a numerical study, we examine the opportunity taking behavior of machines in both single and multiple machine settings and the impact of such practices on the design of an X – Q C chart. Our findings indicate that incorporating inspection/repair opportunities into QC chart design may provide considerable cost savings. © 2009 Wiley Periodicals, Inc. Naval Research Logistics 2009

The Basque Country Mesonet measures more than 130 000 observations daily from its 85 Automatic Weather Stations (AWS). It becomes clear that automated software is an indispensable tool for quality assurance (QA) of this mesoscale surface observing network. This work describes a set of experimental semi-automatic quality control (QC) routines that is applied at Euskalmet data center. It has paid special attention to level validation design and associated flags, as well as to the system outputs, which are used by meteorologist and maintenance staff. ; The authors would like to thank the Emergencies and Meteorology Directorate-Interior Department-Basque Government for public provision of data and operational service financial support.

AbstractDuring a quarter century of research and development in military training and education, the Human Resources Research Organization (HumRRO) has encountered many problems in the evaluation of military instructional systems.