John Baptista

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Public key infrastructure (PKI) has emerged as a critical technology for identity management in e-commerce and e-government and over a hundred Certification Authorities across the globe offer certification services. Despite the passing of legislation in many countries to give equal legal weight to electronic signatures as to handwritten ones, the overall(More)
The absence of a platform for secure electronic commerce is widely recognised. Across the globe, a host of Certification Authorities (CAs) have emerged to seize the opportunity for issuing digital certificates that constitute the Public Key Infrastructure (PKI). Yet the take-up of the technology has been bitterly disappointing. The market for digital(More)
DAPHNE (Developing Aircraft PHotonic NEtworks) is a 3-year European FP7 project (started September 2009). The aim of DAPHNE is to exploit terrestrial optical networking technology (with associated performance advantages) in future aircraft and systems. The consortium comprises fifteen partners (from seven nations) ranging from major air framers (both fixed(More)
This paper re-examines the problem of information asymmetry in the digital certificates market (Backhouse et al., 2003). It aims to discuss how market mechanisms such as rating systems may be more efficient than regulatory interventions in resolving the Lemons problem in this market. In this research, we discuss the concept of rating systems in the(More)
This paper deals with the question of how intranets impact on employee perception and behavior. The study uses a five year longitudinal study following the evolution of an intranet in a UK bank to analyze how it changed the relationships between employees and between managers and employees. The discussion integrates two different research domains, the(More)
In the early 1990s, the Modified Condition/Decision Coverage (MC/DC) criterion was suggested as a structural white-box testing approach, but it can also be used for black-box specification-based testing. Practical application of MC/DC for specification-based testing has its own unique features and sometimes is quite different from code-based applications.(More)
This paper deals with the question of how intranets impact on employee perception and behavior. The study uses a 5 year longitudinal study following the evolution of an intranet in a UK bank to analyze how it changed the relationships between employees and between managers and employees. The discussion integrates two different research domains, the(More)
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