Reference model for implementing ERP systems: an analytical innovation networks perspective

The process for implementing ERP systems is related with the identification of a large range of variables (organisational goals, business rules, business processes, actors, resources and specifics and unique concepts to support these variables). The main agents related to the implementation are the solution supplier, the customer company and the consulting service. If the implementation process is addressed as an organisational innovation, the question is: How to coordinate the ERP implementation resources from an innovation agents network? In order to answer this question, a reference model is proposed for the formation and management of an innovation agent’s network for ERP implementation. The research method is based on a multi-case study for identifying the requirements and to elaborate the reference model applying a modelling method the Enterprise Knowledge Development (EKD). As results, the reference model in an analytical perspective of innovation networks and their drivers, enables to identify, understand and support the process of implementing ERP systems under the EKD models they are: goals; business rules; business processes; actors and resources; concepts; technical components and requirements.     

Deconstructing bottleneck shiftiness: the impact of bottleneck position on order release control in pure flow shops

Bottleneck shiftiness is an important managerial problem that negatively affects shop floor manageability. It has therefore received much research attention. Yet research has focused on how protective capacity can be used to influence bottleneck shiftiness rather than on assessing its operational impact. The latter is complex to evaluate since changing the degree of bottleneck shiftiness influences utilization, which makes the results of different experimental settings non-comparable. To overcome this problem, we take a different approach. Bottleneck shiftiness is decomposed by investigating its underlying phenomenon: the impact of the bottleneck position. Using simulation, we demonstrate that tighter control can be exercised, and better performance achieved, the further upstream the bottleneck is positioned. It is consequently important to be aware of the direction of the bottleneck shift. If the bottleneck shifts upstream, performance is likely to improve rather than deteriorate as is implicitly assumed in the literature.     

Investigation of the performance of trimmed estimators of life time distributions with censoring

For the lifetime (or negative) exponential distribution, the trimmed likelihood estimator has been shown to be explicit in the form of a β‐trimmed mean which is representable as an estimating functional that is both weakly continuous and Fréchet differentiable and hence qualitatively robust at the parametric model. It also has high efficiency at the model. The robustness is in contrast to the maximum likelihood estimator (MLE) involving the usual mean which is not robust to contamination in the upper tail of the distribution. When there is known right censoring, it may be perceived that the MLE which is the most asymptotically efficient estimator may be protected from the effects of ‘outliers’ due to censoring. We demonstrate that this is not the case generally, and in fact, based on the functional form of the estimators, suggest a hybrid defined estimator that incorporates the best features of both the MLE and the β‐trimmed mean. Additionally, we study the pure trimmed likelihood estimator for censored data and show that it can be easily calculated and that the censored observations are not always trimmed. The different trimmed estimators are compared by a modest simulation study.     

How do immigrant parents of children with complex health needs manage to cope in their daily lives?

Daily life with children who have complex health needs can be stressful for parents. Immigrant parents are vulnerable to stress because they may lack language skills and knowledge about the health care system and have limited social networks. In this study, we focus on how immigrant parents of children with complex health needs use emotion‐focused and problem‐focused coping strategies to manage their daily life, and how their self‐efficacy and the immigration process may affect their coping. This qualitative study had an exploratory design with individual and focus group interviews. The sample comprised 27 parents—18 mothers and 9 fathers—from Pakistan, Poland, and Vietnam. The findings indicated that the parents' love for their child helps them to cope in their daily life. Newly arrived migrants, single mothers with a severely ill child who lacked support and migrant parents with language difficulties struggle to cope. Some of the stress is related to personal, social and structural problems, and to the insufficient resources available to meet the child's needs. The parents used both emotion‐focused and problem‐focused coping strategies. The parents noted that access to both universal and selective welfare services is an important factor that contributed to their self‐efficacy and coping.     

Reliability estimation in multicomponent stress–strength model for Topp-Leone distribution

In this paper, we consider the estimation reliability in multicomponent stress-strength (MSS) model when both the stress and strengths are drawn from Topp-Leone (TL) distribution. The maximum likelihood (ML) and Bayesian methods are used in the estimation procedure. Bayesian estimates are obtained by using Lindley’s approximation and Gibbs sampling methods, since they cannot be obtained in explicit form in the context of TL. The asymptotic confidence intervals are constructed based on the ML estimators. The Bayesian credible intervals are also constructed using Gibbs sampling. The reliability estimates are compared via an extensive Monte-Carlo simulation study. Finally, a real data set is analysed for illustrative purposes.     

Wage Inequality and Wage Mobility in Turkey

Social Indicators Research - This paper investigates wage inequality and wage mobility in Turkey using the surveys on income and living conditions. Providing the first evidence on wage mobility for...     

Big Five Personality Factors Among Men With a Sexual Interest in Children

Men with a sexual interest in children or adolescents have been described as less extraverted, conscientious, and emotionally stable than controls. Yet, such studies have mostly been conducted in forensic institutions. To test whether such findings generalize to community samples, we assessed personality profiles of 123 German-speaking men with and 89 men without pedohebephilia online, using the Big Five Inventory-25. Our results indicate that men with pedophilia or hebephilia are less emotionally stable and extraverted but more conscientious than controls. We discuss study limitations and potential causes for differences in personality among community samples of men with and without pedohebephilia.     

Management control in multinational companies: a systematic literature review

Review of Managerial Science - Executing management control across borders is crucial for multinational companies (MNCs). Various management control mechanisms serve to align foreign subsidiaries...     

Handle with care! How majority cues can reduce the negative effects of warnings of foreseeable product failures

Review of Managerial Science - To ensure full effectiveness of several goods, suppliers have to instruct consumers to handle these products in a careful way. In other words, they have to warn of...     

Uniform trade rules for uncleared markets

We analyze markets in which the price of a traded commodity is such that the supply and the demand are unequal. Under standard assumptions, the agents then have single peaked preferences on their consumption or production choices. For such markets, we propose a class of Uniform trade rules each of which determines the volume of trade as the median of total demand, total supply, and an exogenous constant. Then these rules allocate this volume “uniformly” on either side of the market. We evaluate these “trade rules” on the basis of some standard axioms in the literature. We show that they uniquely satisfy Pareto optimality, strategy proofness, no-envy, and an informational simplicity axiom that we introduce. We also analyze the implications of anonymity, renegotiation proofness, and voluntary trade on this domain.