A stated prcference experiment was performed in Calgary in Canada to exaininc how peoplc are influenced in the selection of a departure time for a hypothetical trip to see a movie. A total of 635 complete obscrvations were obtaincd.In each observation the rcspondent was presented with a set of possible departure time scenarios and asked to indicate the order of preference for these scenarios. Each scenario was dcscribed by specifying the automobile travel time, the expected arrival time relative to the movie start time, the parking cost, the probability of being at least ten minutes late for the movie and the length of time the movie had been running. This f o r c d the respondent to trade off between conditions regarding these attributes. Age, gender and frequency of movie attendance were also recorded. The observations thus obtained were used to estimate the parameter values for a range of alternative utility functions in logit models rcpresenting this choice behaviour. The results indicate that all of the attributes included have significant effects on departure time choice in the situation being considered. They also indicate that travellers are prepared to arrive roughly two minutes early for each minute of travel time saved; that the money value of driving time for trips to recreational activities is about half that for trips to work; that one additional percent in the probability of arriving late is equivalent to roughly 0.20 Canadian dollars or 1.93 minutes drive time; and that there is a preference for a Ron-zero expected early arrival time regardless of the associated probability of arriving late. Some of these results are novel and others are consistent with findings for work trips in work done by others, which is seen to add credence to the approach being used here.
KEY WORDSdeparture time choice bchaviour; recreational trips; stated preference; conjoint analysis; logit choice modelling; scnsitivity to probahility of being late J.D.
A paper was published in the hmediately previous issue of this journal describing a stated preference experiment examining how people are influenced in the selection of a departure time for a hypothetical trip to see a movie. The title was 'A stated preference examination of time of travel choice for a recreational trip', Volume 30(3):17-44. Numbers were used to indicate references in the text of the paper and in Table 1 accompanying the text, but these numbers were omitted from the list of references at the end of the papermaking it very difficult to identify specific citations.
In response to increasing competition in the communications satellite business and a desire for continuous improvement of its operations and business systems, Hughes Space and Communications Company (HSC) developed an internal evaluation and corrective action (IECA) system that has become the cornerstone of its continuous improvernent effort. i%is system involves and emphasizes the critical evaluation and improvement of processes rather than the mere confirmation that work performed complies with procedural requirements, which is characteristic of traditional auditing.Denise M. Patterson is the product assurance manager for a HugbesNASA space program.
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