Conjoined twins are a rare phenomenon of a monochorionic monoamniotic twin. The incidence varies from 1 in 50000 to 1 in 100000 live births [1,2]. Female foetuses are more commonly affected with the ratio of male to female being 1:3, particularly in thoracopagus type [3]. Five types of conjoint twins are classically described, Thoracopagus, Omphalopagus, Pygopagus, Ischiopagus and Craniopagus. ...

Conjoint analysis has played an important role in helping make a number of operations management decisions including product and service design, supplier selection, and service operations capacity. Many recent advances in this area have raised questions about the most appropriate form of conjoint analysis for this research. We review recent developments in the literature and provide new evidenc...

The essential character of what is classically considered, e.g., by N. R. Campbell, the fundamental measurement of extensive quantities is described by an axiomatization for the comparision of effects of (or responses to) arbitrary combinations of “quantities” of a single specified kind. For example, the effect of placing one arbitrary combination of masses on a pan of a beam balance is compare...

Stated-preference methods are a class of evaluation techniques for studying the preferences of patients and other stakeholders. While these methods span a variety of techniques, conjoint-analysis methods-and particularly discrete-choice experiments (DCEs)-have become the most frequently applied approach in health care in recent years. Experimental design is an important stage in the development...

Investigating the Effect of tea Packaging Characteristics on Consumer Preferences using Approach New Combination Conjoint Analysis and Artificial Neural Network

Critiques of contingent valuation in the early 1990s (Hausman NOAA Panel) appear to have accelerated rcscarch efforts to investigate the use of conjoint analysis and choice-based methods for eliciting nonmarket values (Adamowicz, Louviere, and Williams; Adamowicz et al.; Garrod and Willis; Johnson and Desvousges; Johnston and Swallow; Holmes, Zinkhan, and Mcrccr; Layton and Lee; Mackenzie; Opal...

A Learning-based Model for Imputing Missing Levels in Partial Conjoint Profiles Respondents in a conjoint experiment are sometimes presented with successive partial product profiles (i.e., profiles with missing attributes). The manner in which these respondents integrate available information in the current profile, information embedded in all previously shown profiles (perhaps through memory r...

In a series of recent papers (Bouyssou and Pirlot, 2002, 2004a), we have proposed several conjoint measurement models that tolerate intransitive preferences. Their main characteristic is that they replace the additivity requirements used in most models designed to cope with intransitivities (e.g. the additive difference model proposed by Tversky (1969) and analyzed in Fishburn (1992) or the add...