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  1. Software systems are increasingly expected to address a broad range of stakeholder values representing both personal and societal values as well as values ensconced as laws and regulations. Whereas laws and regulations must be fully addressed, other human values need to be carefully analyzed and prioritized within the context of candidate architectural designs. The majority of prior work has investigated requirements engineering techniques for either regulatory compliance or for human-values, we take an integrated approach which simultaneously considers laws and regulations as well as societal and personal human values throughout the system analysis, specification, and design process. We illustrate our approach through detailed examples drawn from a multi-drone system regulated by the USA Federal Aviation Authority (FAA) and operating in a domain rich with human and societal values. We then discuss requirements engineering challenges and solutions unique to identifying analyzing, and prioritizing human, societal, and regulatory requirements, and ultimately for designing accountable software systems. 
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    Free, publicly-accessible full text available September 1, 2024
  2. Measuring trust in different Blockchain application contexts is challenging. There is a gap between building an accountable system with Blockchain and measuring the actual trust enhancement. This paper reviews trust factors in different Blockchain application contexts. We propose a trust assessment model for accountable trust factor collection while accounting for both quantitative and qualitative aspects of trust assessment. Our goal is to help users determine the trustworthiness of an entity by analyzing trust factors collected from intermediaries during business transactions. We use security and incentive assumptions to enhance the reliability of trust assessment data on Blockchain. 
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