Open Access

Data warehouse systems have become a basic technological infrastructure in management decision making. Nevertheless, the overall utility of data warehouses remains unmeasured in most practical cases. As a consequence of this, IT-managers do not possess appropriate means to evaluate warehouse benefits in order to decide about investments in warehousing technology. This paper develops a controlling instrument for data warehouse systems based on the Balanced Scorecard (BSC) approach. On the basis of the technological aspects of data warehouse systems, the BSC perspectives are developed and populated with relevant objectives and measures for datawarehouse success. These perspectives are integrated into a consistent data warehouse scorecard. Finally, this instrument provides a holistic approach to drive the performance of data warehouse systems.

Semi-solid metal alloys, as used in industrial thixoforming, have a special microstructure of globular grains suspended in a liquid metal matrix. The complex rheological properties are strongly influenced by the local solid fraction, particle shape, particle size and state of agglomeration. It was analysed how the microstructure develops in dependence of the shear rate and cooling rate during the solidification and it was observed that the average particle size increased with increasing shear rate and decreasing cooling rate. In order to account for those phenomena, the rate of crystal growth and the relationship between average particle diameter and viscosity was modelled by applying the Sherwood two-film model for the mass transport. The dependence of the viscosity from the particle size were modelled with a modified Krieger–Dougherty model. Based on the rheological and microstructural observations an evaluation method was elaborated that allows for the construction of objective master curves that are independent of the particle growth during the experimentation. The isothermal experiments for the characterisation of the rheological behaviour consisted of step-change of shear-rate and yield-stress experiments. From the experimental data the steady-state flow curves could be determined as well as the time-dependent relaxation of the shear stress after a change of shear rate. The steady-state rheological behaviour was found to be shear thinning. Nevertheless, immediately after a shear-rate change an overshoot was observed that resulted from a short-time shear-thickening behaviour. The yield stress was found to strongly depend on the microstructure and the degree of agglomeration of the solid phase. With increasing rest time the yield stress was increasing strongly, because of the agglomeration of the solid particles. Based on the step-change of shear-rate experiments a single-phase flow has been developed that consists of a modified Herschel–Bulkley approach and accounts for the thixotropic as well as for the yield-stress behaviour of the alloys.

Companies and R&D institutions increasingly collaborate not only in isolated projects but also in knowledge-based networks. In those networks, participants combine expertise and applied problems to generate both ‘problem-solving knowledge’ and specialized knowledge: during the process of common problem-solving each partner acquires some of the specialized knowledge of the other partners as well as the newly generated problem-solving knowledge. This article examines the basic principles involved and provides a simple mathematical description of the step-by-step accumulation of knowledge through the solving of applied problems in a knowledge-based network. The rate of increase of the total amount of available knowledge in the network is derived and implications for the orientation of R&D institutes and companies are set out.

Business-driven development favors the construction of process models at different abstraction levels and by different people. As a consequence, there is a demand for consolidating different versions of process models by merging them. In this paper, we study a basic scenario, derive requirements and present a prototype for detecting and resolving changes between process models.

Purpose – The purpose of this paper is to present the current empirical research examining communication, compensation and logistics as elements of product crises management in retailing. Design/methodology/approach – The advantages and disadvantages of these three elements of crises response strategies are juxtaposed drawing on relevant empirical research. For each element of crises response the major findings of research are summarized and shown how it relates to crisis management. Needs for further research that would be necessary to solidify recommendations to retail managers are derived. Findings – The investigation finds that both communicative and compensatory response elements as well as the retailer's logistics can positively influence evaluations of customers directly and indirectly affected by product problems thus enhancing brand equity. This in turn will serve to increase consumers' trust in the retailer that could win him new customers and generally benefit his reputation. Research limitations/implications – Most of the discussed research rests on the assumption of a given (extraneous) crisis response strategy of the manufacturer. Potential problems concerning the co‐ordination or implementation of manufacturer and retailer strategies remain open to question. Additionally, further research should examine which strategies are appropriate to which crisis situation. Practical implications – Materially, over‐compensating customers often has a detrimental effect on solving the crisis. The impact of different compensation types on crisis resolution mostly depends on their respective signalling capabilities, the product problem constituting the crisis and consumer attributions. The use and the effects of a communicative crisis response largely depend on moderating factors such as the retailer's reputation or the existence of strong retail brands and consumer expectations. Elements of logistics seem to support the effects of communication and compensation on crisis resolution but are hardly capable of solving a product‐harm crisis. Originality/value – The role of retailers in product‐harm crisis management has been widely neglected in research although such crises are predominant. This paper outlines the current empirical work on how different crises response elements may contribute to solving a product‐harm crisis for retailers. It derives relevant avenues for further research as well as useful insights to practitioners considering to using such response elements in their own crisis management strategy.

This research paper analyzes the role of pre-crisis reputation for quality on consumers ’ perceptions of product-related dangers and company responsibility in product-harm crises with varying risk information. We consider (non-) substantiated public complaints incorporating low and moderate product- related risks, as well as product-recall situations involving serious risks to the health and safety of consumers. Hypotheses are derived from theories and concepts of consumer behavioural psychology. These are then tested empirically by using an online experiment. The effects of reputation are analyzed across different crises contexts to derive some general insights useful for crisis management. In order to shed light on situational differences of the reputation mechanism its effect on individual crisis level will also be considered. In general, the analysis fi nds that reputation for quality is capable of positively infl uencing the perceptions of company responsibility and thereby shielding the manufacturer from receiving blame. However, an established reputation for high product quality prior to the crisis fails to positively impacting consumers ’ perceptions of problem severity. The crisis-specifi c effects of reputation turn out to be ambivalent. On the basis of these fi ndings, recommendations to crisis managers and relevant avenues for future research are derived.

Objective. To examine the association between region of origin and severe illness bringing a mother close to death (near‐miss). Design. Retrospective cohort study. Setting. Maternity units in Lower Saxony, Germany. Population. 441 199 mothers of singleton newborns in 2001–2007. Methods. Using chi‐squared tests, bivariate and multivariable logistic regression we examined the association between maternal region of origin and near‐miss outcomes with prospectively collected perinatal data up to seven days postpartum. Main outcome measures. Hysterectomy, hemorrhage, eclampsia and sepsis rates. Results. Eclampsia was not associated with region of origin. Compared to women from Germany, women from the Middle East (OR 2.24; 95%CI 1.60–3.12) and Africa/Latin America/other countries (OR 2.17; 95%CI 1.15–4.07) had higher risks of sepsis. Women from Asia (OR 3.37; 95%CI 1.66–6.83) and from Africa/Latin America/other countries had higher risks of hysterectomy (OR 2.65; 95%CI 1.36–5.17). Compared to German women, the risk of hemorrhage was higher among women from Asia (OR 1.55; 95%CI 1.19–2.01) and lower among women from the Middle East (OR 0.66, 95%CI 0.55–0.78). Adjusting for maternal age, parity, occupation, partner status, smoking, obesity, prenatal care, chronic conditions and infertility showed no association between country of origin and risk of sepsis. Conclusion. Region of origin was a strong predictor for near‐miss among women from the Middle East, Asia and Africa/Latin America/other countries. Confounders mostly did not explain the higher risks for maternal near‐miss in these groups of origin. Clinical studies and audits are required to examine the underlying causes for these risks.