Showing papers by "HEC Montréal published in 1994"

Development of a measure to assess the quality of user-developed applications

Abstract: Building on work in software engineering and in end-user computing, this study developed and assessed a measure of user-developed applications quality. The quality construct comprises eight dimensions: reliability, effectiveness, portability, economy, user-friendliness, understandability, verifiability, and maintainability. In turn, each quality dimension is composed of a set of criteria. Finally, each criterion is measured by a series of items. The instrument was tested by means of a survey involving 110 end-users. Confirmatory factor analysis, using the partial least squares technique, was conducted. The results indicate that the 56-items instrument is reliable and valid, and that it can be a useful tool for researchers and for practitioners alike. >

BVAR models with economic priors: An application to the propagation of U.S. regional cycles to Canada

Abstract: To overcome the over-parameterization problems typically associated with the estimation of large VAR systems, Litterman (1979, 1986) and Doan, Litterman, and Sims (1984) have proposed the inclusion ofstatistical a priori information. In this paper, we investigate how economica priori information based on regional input-output tables and trade flows statistics could help estimate a large U.S.-Canadian regional model. Instead of relying on the usual Choleski factorization, we present the variance decomposition based on a national-regional unobservable variables model. Using monthly series (total employment, 1966:1-1986:12) on five Canadian regions and four U.S. ones, we are able to characterize the north-south propagation mechanism.