Appropriate choice of aggregation operators in fuzzy decision support systems

Fuzzy logic provides a mathematical formalism for a unified treatment of vagueness and imprecision that are ever present in decision support and expert systems in many areas. The choice of aggregation operators is crucial to the behavior of the system that is intended to mimic human decision making. This paper discusses how aggregation operators can be selected and adjusted to fit empirical data—a series of test cases. Both parametric and nonparametric regression are considered and compared. A practical application of the proposed methods to electronic implementation of clinical guidelines is presented

Iran, war, displacement and my choice of Joan of Arc

This paper discusses the personal perceptions that have shaped my poetics in writing La Pucelle: an Epic of Joan of Arc as part of a PhD candidature in the School of Communication and Creative Arts, Deakin University.

Cluster housing and the freedom of choice: a response to Emerson (2004)

Comments on the study of people with an intellectual disability. Inferiority of the standard of various objectively measured variables for the people living in cluster housing; Behavior of people living in cluster housing; Consideration of a study that compared pensioners with socialites on the extent of their social networks.

Psychological and situational influences on commuter-transport-mode choice

The relative importance and relationship between psychological and situational factors in predicting commuter-transport-mode choice was tested by four hypotheses. First, the influence of individuals’ values on commuter behavior is mediated by their corresponding beliefs about the environmental threat of cars (mediation hypothesis). Second, the influence of these beliefs on behavior is moderated by individual consideration of future consequences and control beliefs (moderation hypothesis). Third, cost, time, and access factors contribute to individuals’ commuter choice (situational hypothesis). Fourth, situational and psychological factors jointly influence proenvironmental behavior (interaction hypothesis). A sample of 205 Australian university students completed a survey to measure these relationships. Regression analyses indicated support for the mediation, situational, and interaction hypotheses. It was concluded that to achieve a transport-mode shift to public transport, public policy strategies should focus on individuals’ transport-related environmental beliefs (personal control and environmental effect of cars) and situations (access to public transport at reduced cost).

Design, format, validity and reliability of mutiple choice questions for use in nursing research and education

Multiple choice questions are used extensively in nursing research and education and play a fundamental role in the design of research studies or educational programs. Despite their widespread use, there is a lack of evidence-based guidelines relating to design and use of multiple choice questions. Little is written about their format, structure, validity and reliability of in the context of nursing research and/or education and most of the current literature in this area is based on opinion or consensus. Systematic multiple choice question design and use of valid and reliable multiple choice questions are vital if the results of research or educational testing are to be considered valid. Content and face validity schould be established by expert panel review and construct validity should be established using ‘key check’, item discrimination and item difficulty analyses. Reliability measures include internal consistency and equivalence. Internal consistency should be established by determination of internal consistency using reliability coefficients while equivalence should be established using alternate form correlation. This paper reviews literature related to the use of multiple choice questions, current design recommendations and processes to establish reliability and validity, and discusses implications for their use in nursing research and education.

Measuring social welfare: application of social choice theory

This paper questions conventional approaches to measuring social welfare through gross domestic product (GDP). This paper is divided into two parts. The first part adopts a systems approach to development and incorporates this into the theory of social choice. The second part operationalises this approach through the development of a cost-benefit adjusted gross domestic product (CBAGDP) social welfare function, which overcomes certain limitations of this traditional measure of development. The CBAGDP is then used to estimate welfare in Thailand. This approach is justified because of its normative values and its plausible results.

Measuring human well-being in Thailand : a normative social choice approach

Numerous methods exist within the literature to measure human well-being. A limitation of some approaches however is that they fail to explicitly consider society's views, choices and preferences on how human well-being should be defined. It is possible though to explicitly incorporate society's value judgements in defining and measuring human well-being through normative social choice theory. Normative social choice theory reflects the views, opinions and perspectives of societies of differing economic and social circumstances so that measures of human well-being retain their relevance for public policy makers in those countries. This paper reviews two indicators based on this theory for Thailand over the 25 year period, 1975-1999. The first indicator focuses on certain hierarchical needs and the second is a measure of adjusted national income. It is concluded that both measures provide important insights.

Pricing segmentation and MBA course choice

The consensus from studies of the price-demand relationship for higher education is that this relationship is negative but small. This paper investigates the circumstances in which demand for an MBA is positive to price increases. A survey of currently enrolled MBA students, and prospective MBA students, found that most students displayed the expected price elasticity in a conjoint analysis of hypothetical MBA course ratings. However, 12 per cent of respondents exhibited “reversal” behaviour regarding price. Profiling these respondents using discriminant analysis suggested that “reversals” seemed prepared to pay more for a course at a high prestige university, if they could study off-campus using print-based materials.

Allocative and informational pricing roles in MBA program choice

This paper reports on a study of how prospective and current MBA students (n = 699) made tradeoffs between tuition price and other variables in choosing a university program in the Australian market. Two price segments were identified: price-negative and price-positive. The price-positive segment constituted 13 per cent of the sample. The behaviour of the two price segments is interpreted in relation to the allocative and informational roles of price. Price-positive respondents were found to be more concerned with the reputational characteristics of universities and programs in making their choice. Age, enrolment mode, and residential state were found to be associated with segment membership. The results suggest that an MBA by distance education can be regarded as a prestige product for some market segments.

Consumer complaint channel choice in self-service technology encounters

Consumers’ choice of channel to communicate complaints, following the decision to voice to the organisation, has received very little research attention. This study contributes to filling this gap by exploring the drivers of consumers’ choice of complaint channel in the self-service technology (SST) context. Surprisingly, in this context, consumers have often chosen interpersonal complaint channels over electronic channels, resulting in some of the value of using SSTs being lost for consumers and organisations alike. Preliminary findings indicate that the perceived ease of use, the likelihood of organisational response, the desire for social interaction and the source of the SST-related complaint, might provide some clues as to the organisational strategies that can be used to encourage greater utilisation of technology-based complaint channels.