Perceived Usefulness and Ease of Use as Mediators of the Effect of Health Information Systems on User Performance (Published)
Health information systems (HISs) have transformed health organizations by playing a supportive role in improving efficiency and quality of healthcare. This paper explores the mediating role of perceived usefulness (PU) and perceived ease of use (PEOU) on the relationship between task technology fit (TTF), information quality (IQ), system quality (SQ) and user performance (UP) in health organizations in Kenya. A framework was generated by modifying the dimensions of TTF, DeLone and McLean IS Success Model (D&M) and Technology Acceptance Model (TAM). Descriptive survey design was utilized and the proposed model provided empirical evidence based on a questionnaire administered to 395 HIS users. Mediation analysis was carried out using ordinary least squares (OLS) path analysis and results indicated that PU and PEOU mediated the association between TTF, IQ, SQ and UP. The results indicated that performance outcomes are higher when individual users perceive HISs to be useful and easy to use.
Predicting Consumer Adoption of Point Of Sale (POS) E-Payment System in Nigeria Using Extended Technology Acceptance Model (Published)
This study is concerned with Predicting Consumer Adoption of Point of Sale (POS) e-Payment System in Nigeria Using Extended Technology Acceptance Model. We extended the TAM by adding two variables: consumer awareness and security of operations to ascertain how they predict the original TAM constructs: PU and PEOU to predict POS adoption. The study was based on a sample of 400 respondents in Awka, Nigeria; of which 234 responded. Questionnaire was the instrument for data collection and was designed with five point likert scale. Four items were used to measure each of the variables. The analysis was done with SEM with the aid of AMOS 23 software. This study has established that PEOU and PU positively and significantly impact POS adoption in Nigeria. It also demonstrated that security impacts PEOU positively and significantly but insignificantly on PU. Consumer awareness (CA) significantly and positively impact PU but impact on PEOU is not significant. The study has implications for research and practice. Further researches should be conducted with further extensions to show the mediation and or moderation impacts of the two variables
Factors Affecting ERP Acceptance towards Improved Financial Performance of Saudi Arabia Listed Firms (Published)
The main purpose of this study is to investigate the effects of user training and education and perceived usefulness on the ERP systems acceptance and the contribution of the ERP systems towards the improved financial performance of Saudi firms. The survey is conducted with the ERP users, which are working in the Saudi based companies. The ERP users which are selected for the survey having been using the ERP modules for various tasks including finance and accounting, material management, human resource management, quality management and sales and distribution. The research findings show that training and perceived usefulness both have a positive relation with the acceptance of the ERP systems.