When evaluating assurance cases, being able to capture the confidence one has in the individual evidence nodes is crucial, as these values form the foundation for determining the confidence one has in the assurance case as a whole. Human opinions are subjective, oftentimes with uncertainty—it is difficult to capture an opinion with a single probability value. Thus, we believe that a distributio...

Assurance cases provide a structured method of explaining why a system has some desired property, for example, that the system is safe. But there is no agreed approach for explaining what degree of confidence one should have in the conclusions of such a case. This report defines a new concept, eliminative argumentation, that provides a philosophically grounded basis for assessing how much confi...

Quality management (QM) literature highlights that service quality is a critical determinant of organizational competitiveness. The ability of an organization implements service quality program will positively motivate customers’ perceive value; this may lead to increased their satisfaction. The nature of this relationship is less emphasized in service quality service models. In this study, a s...

A system cannot have high assurance if it has poor security, and thus, requirements for high assurance systems will logically include security requirements as well as availability, reliability, and robustness requirements. Unlike typical functional requirements, security requirements can potentially be highly reusable, especially if specified as instances of reusable templates. This paper discu...

This paper focuses on identifying some the factors affecting customer satisfaction and trust in an e-commerce setting (one specific company) among Vietnamese customers. It examines various stimuli, namely, value factors as expressed in terms of product offer and price and service quality dimensions, including ease of use, website design (e-scape), responsiveness, customization, and assurance. A...

Evolution of software is cumbersome process and also needs many iterations of software testing for satisfying some quality criteria. Software quality assurance activities must be effectively used for the proper software quality management and to achieve good product quality .Effective quality management is related to Value Engineering and Risk Management. In the present paper we will study rele...

SUMMARY: This study examines whether the voluntary provision of non-financial performance indicators (as part of the Balanced Scorecard framework) and assurance on this information impacts on stock price estimates and earnings forecasts in an experimental setting. A controlled experiment was performed on sophisticated users of financial statements. They were provided with a case study containin...

Assurance provides confidence that a system will work as required and not cause harm. Confidence is based on justified beliefs about the system and its environment, and justification can be developed and documented as an assurance case comprised of a structured argument grounded on evidence. For justification to be compelling, the argument must be indefeasible, meaning that we have so thoroughl...

The U.S. National Institute of Standards and Technology (NIST) is starting two ambitious projects to (1) develop a taxonomy of software security flaws and vulnerabilities, (2) develop a taxonomy of software assurance (SA) functions and techniques which detect those flaws, (3) perform and maintain a survey of SA tools implementing the functions, (4) develop testable specifications of SA function...

A small, manageable number of common software safety assurance principles can be observed from software assurance standards and industry best practice. We briefly describe these assurance principles and explain how they can be used as the basis for creating software safety arguments.