Radboud University Nijmegen

About: Radboud University Nijmegen is a education organization based out in Nijmegen, Gelderland, Netherlands. It is known for research contribution in the topics: Population & Context (language use). The organization has 35417 authors who have published 83035 publications receiving 3285064 citations. The organization is also known as: Catholic University of Nijmegen & Radboud University.

Group model-building: tackling messy problems

Abstract: Group model-building here refers to a system dynamics model-building process in which a client group is deeply involved in the process of model construction. The problem that is modelled can be reasonably well defined, but it can also take the form of an ill-defined or messy problem, i.e., a situation in which opinions in a management team differ considerably. These messy managerial situations are difficult to handle, primarily because thus far little theoretical work has been conducted to shed more light on the question why these messy situations exist and why it may be difficult for a management team to reach agreement. This article fills this theoretical gap by drawing on literature from sociology, (social) psychology and small-group research. Insights from this literature are discussed and translated into guidelines for conducting Group Model-Building projects for messy problems. The article ends with the conclusion that system dynamicists should include Group Model-Building and facilitation training in their teaching programs. Copyright © 1999 John Wiley & Sons, Ltd.

Partial-wave analysis of all nucleon-nucleon scattering data below 350 MeV.

Abstract: We present a multienergy partial-wave analysis of all NN scattering data below ${\mathit{T}}_{\mathrm{lab}}$=350 MeV, published in a regular physics journal between 1955 and 1992. After careful examination, our final database consists of 1787 pp and 2514 np scattering data. Our fit to these data results in ${\mathrm{\ensuremath{\chi}}}^{2}$/${\mathit{N}}_{\mathrm{df}}$=1.08, with ${\mathit{N}}_{\mathrm{df}}$=3945 the total number of degrees of freedom. All phase shifts and mixing parameters can be determined accurately.

Attitude versus general habit -- antecedents of travel mode choice /

Abstract: A model of travel mode choice is tested by means of a survey among 199 inhabitants of a village. Car choice behavior for a particular journey is predicted from the attitude toward choosing the car and the attitude toward choosing an alternative mode (i.e., train), on the one hand, and from general car habit, on the other hand. Unlike traditional measures of habit, a script-based measure was used. General habit was measured by travel mode choices in response to very global descriptions of imaginary journeys. In the model, habit is predicted from the degree of involvement with the decision-making about travel mode choice for the particular journey (decisional involvement) and from the degree of competition in a household with respect to car use. The model proves satisfactory. Moreover, as suggested by Triandis (1977), there is a tradeoff between attitude and habit in the prediction of behavior: When habit is strong the attitude-behavior relation is weak, whereas when habit is weak, the attitude-behavior link is strong.