Constitutional Reform and Canadian Social Policy

It is generally accepted that Governments, with a neo-conservative or more properly a Victorian neo-liberal bent will, through various means and mechanisms, try to dismantle aspects of the Welfare State. While these mechanisms usually take the form of privatization, reductions in expenditures, de-indexing and the like, a much more subtle process currently is underway in Canada. Two broad initiatives — Constitutional Change and Free Trade — of the Mulroney government seriously threaten the future of the Canadian Welfare State. The Welfare State is not the direct target in either of these initiatives but the implications, in the view of the authors, are profound. This article examines the question of constitutional reform and the consequences for Canadian social policy.     

Authority Concepts Among Children and Adolescents in the Island of Macao

We examined the reasoning of children and adolescents in the island of Macao regarding the bases of legitimate authority across social contexts. We asked 101 children in 3rd, 5th, and 7th grades to evaluate the authority of persons issuing commands to children in two events. In one, persons with varying combinations of authority attributes issue a command that resolves a turn‐taking dispute between children in school. In another, persons with varying social positions issue a command to children to stop playing ball across three contexts: school, home, and a public park. Results show that, although young Macanese reason in many ways similar to American children, social position may be a less important legitimizing authority attribute for them than for American children.     

Relation Between Maternal Cigarette Smoking During Pregnancy and Behavioral and Physiological Measures of Autonomic Regulation in Neonates

The effects of maternal cigarette smoking during pregnancy on behavioral and physiological measures of arousal were examined in a sample of 50 neonates. After the effects of alcohol, caffeine, and maternal demographic variables were statistically controlled, regression analyses showed that maternal smoking during pregnancy was predictive of higher heart rates overall and during quiet and active sleep. Maternal smoking during pregnancy was also predictive of lower heart rate variability and an increased number of tremors and changes in behavioral state. These findings suggest that maternal cigarette smoking during pregnancy affects the regulation of spontaneous autonomic activity in neonates.     

Some extensions and applications of Kriz's (1972) urn model

A summary of Kriz's (1972) paper concerning an urn model for the PMP distribution is given. Extensions of the model are made, considering cases in which the urns are not drawn from independently. Possible applications of the extended model in some epidemiological situations are suggested, and a simple computer algorithm for simulating the distribution is given. Results of a simple simulation based on May's (1986) paper are given.     

Perceptions of efficacy in the use of contemporary film in social work education: An exploratory study

This article discusses the use of contemporary film in social work education, including the theoretical rationale for the inclusion of film from the perspective of narrative and adult learning theory as well as the application of the case method to the use of film. The student viewpoint and perspective is provided through the results of an exploratory research study with 109 Baccalaureate social work students who completed a survey questionnaire following a classroom activity involving a contemporary film. Analysis of the quantitative data and qualitative comments indicates that students believe that film is a beneficial adjunct to textbook and lecture content.     

Personality preferences in laboratory economics experiments

Student volunteers at the U.S. Naval Academy (USNA) participated in one of the following one-shot games: a dictator game, an ultimatum game, a trust game, or a prisoner's dilemma game. We find limited support for the importance of personality type for explaining subjects’ decisions. With controls for personality preferences, we find little evidence of behavioral differences between males and females. Furthermore, we conclude that seniority breeds feelings of entitlement—seniors at USNA generally exhibited the least cooperative or other-regarding behavior.     

Vector quantization: clustering and classification trees

An image that is mapped into a bit stream suitable for communication over or storage in a digital medium is said to have been compressed. Using tree-structured vector quantizers (TSVQs) is an approach to image compression in which clustering algorithms are combined with ideas from tree-structured classification to provide code books that can be searched quickly and simply. The overall goal is to optimize the quality of the compressed image subject to a constraint on the communication or storage capacity, i.e. on the allowed bit rate. General goals of image compression and vector quantization are summarized in this paper. There is discussion of methods for code book design, particularly the generalized Lloyd algorithm for clustering, and methods for splitting and pruning that have been extended from the design of classification trees to TSVQs. The resulting codes, called pruned TSVQs, are of variable rate, and yield lower distortion than fixed-rate, full-search vector quantizers for a given average bit rate. They have simple encoders and a natural successive approximation (progressive) property. Applications of pruned TSVQs are discussed, particularly compressing computerized tomography images. In this work, the key issue is not merely the subjective attractiveness of the compressed image but rather whether the diagnostic accuracy is adversely aflected by compression. In recent work, TSVQs have been combined with other types of image processing, including segmentation and enhancement. The relationship between vector quantizer performance and the size of the training sequence used to design the code and other asymptotic properties of the codes are discussed.