An Integrative Model of Information Systems Use in Mandatory Environments

The volitional nature of IS use in organizations is shifting to contexts of mandatory adoption. This has prompted a need for IS researchers to reassess current predictive models of IS use. In this paper we present our work on a theoretical framework for predicting IS use in a mandatory adoption environment. Issues specific to mandatory environments are raised and discussed, and a new model for predicting end-user behavior is proposed. Methodological considerations for testing the model are discussed

Issues in Predicting and Explaining Usage Behaviors with the Technology Acceptance Model and the Theory of Planned Behavior When Usage Is Mandatory

Within certain industries there is an increasing prevalence toward computerizing work practices and mandating specific tasks performed using an Information System (IS). This trend is unlikely to diminish the need for stakeholders, involved in the implementation of an IS, to identify the determinants of successful use. Yet, to date, there is a paucity of research that has considered the issues specific to predicting and explaining user behavior in these situations. In this paper, we identify the relevant issues necessary for applying the technology acceptance model and the theory of planned behavior to the prediction and explanation of mandated IS usage, and we assess the value of these models to the task. The results of a longitudinal study conducted in a hospital setting are presented and we suggest the direction that future research might take

Correlates of End-User Performance and Satisfaction with the Implementation of a Statistical Software Package

This paper presents research in progress. It investigates the validity of Henry and Stone's (1995) model that identified computer self-efficacy and outcome expectation as mediating variables such as management support, ease of use, and computer experience in the prediction of job performance. The model was extended with the inclusion of additional antecedents to self-efficacy and outcome expectancy as posited in Bandura's (1986) Social Cognitive Theory. The applicability of the model was examined in the context of the implementation of a statistical software package with 40 undergraduate students as participants. Preliminary findings indicate some support for the model in this context

Further evidence of direct uptake of sucrose by Saccharomyces cerevisiae in batch culture

A sucrose-adapted inoculum of Saccharomyces cerevisiae growing in a batch fermenter in a sucrose medium was dosed with a high concentration of the enzyme invertase (β-D-fructosidase) during the mid-exponential phase of growth. The culture then underwent a short lag of about 20 min before dramatically decreasing its growth rate. The sugar analysis profiles showed that, during the lag phase, all the sucrose was hydrolyzed to glucose and fructose. The specific growth rate decreased from 0.50 h 1 when growing on sucrose (before addition of invertase) to 0.44 h 1 on the resulting mixture of glucose and fructose. These results help in explaining the mechanism of utilization of sucrose by actively growing yeast cells in a batch culture and suggest a direct uptake of sucrose molecules into yeast cells