"L'évolution des idées concernant les relations entre "Systèmes d'Information et Management des Entreprises""


Informatique et Santé

1993, n°6, pp.8-22

Departments: Information Systems and Operations Management

A Comparative Evaluation of the Utility of Electronic and Voice Mail for Organizational Communication


Information & Management

January 1993, vol. 24, n°1, pp.9-21

Departments: Information Systems and Operations Management

Communication in scheduled and unscheduled meetings, over the telephone and in face-to-face encounters consumes the majority of a manager's time. By some estimates, up to 85% of a manager's time is involved with various forms of communication. It comes as no surprise, therefore, that many organizations see the enhancement of managerial communication as a potentially high leverage application. This paper reports on the results of an exploratory study that compares two of the most prevalent communication technologies: Voice and electronic mail. Based on the findings of a questionnaire completed by 68 users of both voice mail and electronic mail from 12 organizations, cross-media comparisons are made with respect to scope of communication, patterns of communication, communication tasks and message content. The findings indicate that E-mail is viewed as a medium that has a significant impact on how individuals communicate in an organization. By contrast, V-mail is viewed as only a supplement to the telephone and has minimal perceived impact on intra-organizational communication

A la recherche d'un autre miracle économique : que signifie le pacte de solidarité allemand ?


Allemagne d'Aujourd'hui

1993, n°125, pp.87-92

Departments: Languages & Cultures

Alliances et coopérations dans l'aérospatial et l'armement : bilan et perspectives dans le contexte de l'après-guerre froide


Economie Appliquée

1993, vol. XLVI, n°3

Departments: Strategy & Business Policy, GREGHEC (CNRS)

An Experimental Investigation of Iconic and Direct Manipulation Interfaces


International Journal of Man-Machine Studies

March 1993, vol. 38, n°3, pp.369-402

Departments: Information Systems and Operations Management

This paper reports on two experiments which examine the effects of iconic and direct manipulation interfaces on the performance of casual users using an electronic mail system. There are two key aspects to these experiments. First, they have been carefully designed to separate the effect of iconic representation from that of direct manipulation in order to examine the independent effect of each as well as their joint effect. Second, subjects performed the same experimental task three different times over 1 week, thus allowing for the effects of icons and direct manipulation interfaces to be assessed over repeated trials. Each experiment measured time taken and errors made in task completion as dependent variables.Results indicate that there were no advantages associated with iconic representations compared to text-based representations of actions and objects. Subjects working with direct manipulation interfaces completed the task faster than those with menu-based interfaces. However, this difference in time was not significant when the task was repeated for a third time, indicating that the benefits to direct manipulation might diminish after a learning period. No interface was better than others in terms of reducing error rates when interacting with the computer system