Vignettes can be incorporated into qualitative interview discussion guides and used successfully in rural African settings to draw out barriers to PMTCT service use, indicating potential usefulness in other areas of research on HIV, health service use, and drug adherence.
But those of us in the domain of the dot-orgs, the gentle realm of "venture socialists" who measure success in community service and usefulness, haven't experienced that change of fortune.
At the time, Gulliver expressed doubts about the service's usefulness to business travellers because it was flying to Gatwick, it was operating just once a day, and it was going to struggle to appeal to travellers tied into BA's and Cathay Pacific's loyalty programmes.
Whether or not it's worth the extra effort is up to you, but I quickly found that the service's usefulness far outweighs the few extra seconds needed to make it work.
Some specific threats to its growth and engagement include competing products, the failure to introduce well-received new products, the inability to balance the user experience with the presence of ads, content relevancy, reduced perception of the service's usefulness, and concerns about sharing, safety and security.
The questionnaire consisted of 19 items, that measured four factors; perceived matching of conditions and online learning services, perceived usefulness, perceived ease of learning, and characteristics of students.
Kicking off the orgy of hypothetical-revisionism, the team behind Google Wave decided to demonstrate the service's questionable usefulness by suggesting how the Founding Fathers might have used it to draft the Declaration of Independence.
System quality, information quality, service quality, perceived usefulness, user satisfaction, and PACS dependence were measured using existing instruments.
Important factors in the development of health technologies and services are acceptability to patients (the extent to which services are generally approved or used, the perceived usefulness of services, and patients' satisfaction) as well as the perceived usability of the technology.
Most other carriers that offer Wi-Fi charge passengers for the service, limiting its usefulness as a conduit for in-flight media; Norwegian sees it as a universal service.
