Chess Playing as Strategic Activity

This article takes an interactionist perspective and explores how people engage in strategic activity in the context of a chess game. Based on participant observation in the chess community and interviews with twenty amateur chess players, it examines the most relevant issues to players as they form their lines of action during play. It considers the following dimensions: incorporation of routine activity and style, role taking, impression management, engrossment, and composure. By examining these dimensions, we can gain an understanding of strategic activity as a generic social process. Further, drawing connections from strategic activity in chess to other areas of human group life indicates directions for future research.     

Family matters: a discussion of the Bangladeshi and Pakistani extended family and community in supporting the children's education

This paper looks beyond an individualised type of parental involvement and discusses the role of the extended family in relation to school. We draw on the different social capital theories to explain its implications and also to discuss its efficacy. Our focus is on the Bangladeshi community and the Pakistani community in two towns in the North East of England. British South Asian parents are variously accused of having too high educational expectations of their children or not being interested at all and that Pakistani and Bangladeshi parents in particular have no or limited relationships with their children's schools. In this paper we demonstrate that parental involvement in these two communities resides not simply in the hands of the parents but within the wider family. We challenge the deficit model of British South Asian families as indifferent to the education of their children and we identify the potential resource of the extended family.     

Difficulties with age estimation of internet images of south‐east Asian girls

Community paediatricians are increasingly asked to provide expert opinion on internet child pornography related to ‘sex tourism’, mostly in south‐east Asian countries. The girls involved are often prepubertal, and the main legal question is to establish whether they are under 13 years of age. This paper provides a review of the literature related to this question. Although there are limited data of age of menarche from the countries at risk of ‘sex tourism’, one recent study from the Philippines showed that the mean age of menarche was similar to the mean age of British girls born between 1982 and 1986. There are no data in the above countries on the early pubertal changes in breast development, but studies from India and China suggested that these might be more prolonged than for British girls. In particular, the interval between B2 stage (early pubertal breast development) and menarche was nearly 3 years in these developing countries, compared with 2 years for the British girls. Maternal malnutrition and girls small for gestational age at birth resulted in an earlier menarche, while chronic malnutrition, severe enough to cause stunting in preschool years, caused a delay in menarche. Taking into account information from the existing studies, we estimated that 97.5% of south‐east Asian girls will show pubertal changes of B2 stage by the age of 13.7 years. Copyright © 2003 John Wiley & Sons, Ltd.     

Temporal Aspects of Facial Displays in Person and Expression Perception: The Effects of Smile Dynamics,Head-tilt,and Gender

Recent work suggests that temporal aspects of facial displays influence the perception of the perceived authenticity of a smile. In the present research, the impact of temporal aspects of smiles on person and expression perception was explored in combination with head-tilt and gender. One hundred participants were shown different types of smiles (slow versus fast onset) in combination with three forms of head-tilt (none, left, or right) exhibited by six computer-generated male and female encoders. The encoders were rated for perceived attractiveness, trustworthiness, dominance, and the smiles were rated for flirtatiousness and authenticity. Slow onset smiles led to more positive evaluations of the encoder and the smiles. Judgments were also significantly influenced by head-tilt and participant and encoder gender, demonstrating the combined effect of all three variables on expression and person perception.

The theory of constraints: a methodology apart?—a comparison with selected OR/MS methodologies

Mingers (J. Oper. Res. Soc. 54 (2003) 559; Int. Trans. Oper. Res. 7 (2000) 673; J. Mingers, A. Gill (Eds.), Multimethodology: Towards the Theory and Practice of Combining Management Science Methodologies, Wiley, Chichester, 1997), Mingers and Brocklesby (Omega—Int. J. Manage. Sci. 25(5) (1997) 489; Systemist 18(3) (1996) 101) and others have sought to develop classificatory frameworks that would be useful in understanding the nature and characteristics of Operational Research/Management Science (OR/MS) methodologies and the philosophical assumptions underpinning them. This paper extends their work to the domain of methods and methodologies known as the Theory of Constraints (TOC). In particular, the paper helps position TOC methods and tools in relation to traditional OR/MS methodologies, methods and tools, and provides a basis for continuing multi-methodological development across the two domains.The paper concludes that the tools, techniques and methods of TOC can be viewed as a methodological set of complementary hard and soft tools and methods that contribute to all phases of activity and across all three social, personal and material dimensions of the Mingers–Brocklesby framework, and share the ontological and epistemological characteristics and assumptions of extant OR/MS methodologies.     

An EM-type algorithm for multivariate mixture models

This paper introduces a new approach, based on dependent univariate GLMs, for fitting multivariate mixture models. This approach is a multivariate generalization of the method for univariate mixtures presented by Hinde (1982). Its accuracy and efficiency are compared with direct maximization of the log-likelihood. Using a simulation study, we also compare the efficiency of Monte Carlo and Gaussian quadrature methods for approximating the mixture distribution. The new approach with Gaussian quadrature outperforms the alternative methods considered. The work is motivated by the multivariate mixture models which have been proposed for modelling changes of employment states at an individual level. Similar formulations are of interest for modelling movement between other social and economic states and multivariate mixture models also occur in biostatistics and epidemiology.