Fit performance of several programs used for non-linear least squares problems

Seven computerprograms for non-linear regression or curve fitting problems are compared. The comparison of the programs, running in different computing centra, is restricted to the fit performance. Six model functions are fitted according to the least squares criterion to data series, arising from practical work. The special least squares minimization programs turned out to be better suited for these problems than general optimizing programs.     

发言摘登

这次会议讨论的是一个很重要的题目──国企转型与企业文化构建。我们现在对企业文化的认识,如果同10年前相比,可以说是跨越了一个世纪。当时感觉企业文化是个新鲜东西,并不知道它有多大用途,好像很时髦,多数人对它的认识还是狭窄的、浮面的。10年后的今天,经过理论界的探索研究,特别是经过企业界的创新实践,使得我们对企业文化的认识有了很大的发展。中外企业文化杂志社利用庆祝创刊10周年的机会,组织大家共同研讨国企转型与企业文化构建,这个题目选得非常好。当前,企业文化在中国的需求,很重要的一点就是与国企转型联系在了一起。企业文化…     

Towards a Theory of Organizational Improvisation: Looking Beyond the Jazz Metaphor

abstract This paper calls for research on organizational improvisation to go beyond the currently dominant jazz metaphor in theory development. We recognize the important contribution that jazz improvisation has made and will no doubt continue to make in understanding the nature and complexity of organizational improvisation. This article therefore presents some key lessons from the jazz metaphor and then proceeds to identify the possible dangers of building scientific inquiry upon a single metaphor. We then present three alternative models – Indian music, music therapy and role theory. We explore their nature and seek to identify ways in which the insights they generate complement those from jazz. This leads us to a better understanding of the challenges of building a theory of organizational improvisation.     

Switching to the policy mode: Incentives by the OECD jobs study to change our mindset

I would like to thank Simon Kuipers and Joan Muysken for their critical comments on an earlier draft of the article.     

How to predict transfer of training? Investigating the application of the unified model of task-specific motivation

Transfer motivation is an important factor influencing transfer of training. However, earlier research often did not investigate transfer motivation as a multidimensional construct. The unified model of task-specific motivation (UMTM) takes into account that (transfer) motivation is multidimensional by including both affective and cognitive motivational components and their antecedents. Prior research has provided evidence that the UMTM can predict self-reported transfer of training, but is unclear whether it also can predict transfer reported by expert external raters. Moreover, it is unclear whether controlling for prior knowledge matters for the relationship between transfer motivation and transfer of training. This study improves on existing research by accounting for both of these gaps in the literature. Data were collected among 299 participants who filled in a questionnaire about the UMTM components directly after attending a writing training. They also handed in written documents before, and 6 weeks after the training, which were rated on transfer by trainers. Outcomes showed that components of the UMTM positively predict externally reported transfer when prior knowledge was controlled for. The outcomes imply that the UMTM has predictive value for transfer of training and points out which factors influence whether transfer does or does not occur.     

Attachment styles and customers' long-term relationships in a service context

The main objective of this study is to use attachment styles theory to explore long-term relationships in a service context using the mobile market as a case study. Attachment theory focuses on the primary link between maternal loss or deprivation and later personality development. This theory was extended to adult life and commercial contexts. Three attachment styles (secure, avoidant, and anxious) were used as the independent variables. Commitment and trust, as constructs of any relationship, were employed as the mediating variables, while intention to stay and cooperation were adopted as the dependent variables, as indicators of long-term commercial relationships. A random sample of 1024 members of an online panel participated in the online survey. Structural equation modelling was performed to measure the validity of the constructs through confirmatory factor analysis, and to assess the hypothesized model as a single theoretical structure using path analysis. Associations were found between most of the study variables. Significant mediation effects were found between attachment styles and long-term relationship indicators, intention to stay, and cooperation, with trust and commitment as the mediators. This study employs a unique theoretical model that has not been previously tested. The model and findings demonstrate that primary psychological structures play a role in creating and maintaining long-term relationships.