Understanding requirements engineering process: a challenge for practice and education

Reviews of the state of the professional practice in Requirements Engineering (RE) stress that the RE process is both complex and hard to describe, and suggest there is a significant difference between competent and "approved" practice. "Approved" practice is reflected by (in all likelihood, in fact, has its genesis in) RE education, so that the knowledge and skills taught to students do not match the knowledge and skills required and applied by competent practitioners.

A new understanding of the RE process has emerged from our recent study. RE is revealed as inherently creative, involving cycles of building and major reconstruction of the models developed, significantly different from the systematic and smoothly incremental process generally described in the literature. The process is better characterised as highly creative, opportunistic and insight driven. This mismatch between approved and actual practice provides a challenge to RE education - RE requires insight and creativity as well as technical knowledge. Traditional learning models applied to RE focus, however, on notation and prescribed processes acquired through repetition. We argue that traditional learning models fail to support the learning required for RE and propose both a new model based on cognitive flexibility and a framework for RE education to support this model.

The slow wheels of requirements engineering research: responding to the challenge of societal change

Despite the significant Requirements Engineering (RE) research efforts over the past decade the research--industry gap still remains persistent.
Recent attempts by the RE research community to address this issue include cumulative knowledge studies to describe the current state of RE research and the establishment of a new conference dedicated to the comparative evaluation of RE.
This paper reports the state of RE research from 2001 to 2005. A taxonomy of RE literature is presented and a conceptual framework for
understanding the current state of RE is also described. The ensuing analysis shows that during the period 2001-2005 there was only an incremental development of RE research without any radical theoretical contributions to its body of knowledge. The paper also poses a challenge for the RE research community to respond to the dramatic changes in the
social and business world.

The importance of IS stakeholder perspectives and perceptions to requirements negotiation

Project managers and developers need to acknowledge the influence of IS stakeholders’ perspectives and perceptions on the outcome of requirements negotiation - the essential component of requirements elicitation. This paper describes a conceptual study, which demonstrates such an influence and asserts that stakeholder perspectives, goals and issues are the key to negotiators’ perceptions of the system requirements. Analysis of two seminal IS case studies further supports this assertion and indicates that goals, perspectives and prior experience with negotiation techniques can guide stakeholders bargaining behaviour during requirements negotiation. Our findings also show that to achieve consensus on requirements, stakeholder perspectives must be aligned or accepted by negotiating parties. Achieving alignment of perspectives, however, is quite difficult because during requirements elicitation stakeholders’ goals continually alter due to their acquisition of technical and business knowledge, development of inter-personal relationships and creation of new perceptions of issues relevant to requirements negotiation.

Research challenges inherent in determining improvement in university teaching

Using a recent study that examined the effectiveness of a particular approach to improving individual university teaching as a case study, this paper examines some of the challenges inherent in educational research, particularly research examining the effects of interventions to improve teaching. Aspects of the research design and methodology and of the analysis of results are discussed and recommendations for improvements for future research are made.

Implications of the IFRS goodwill accounting treatment

Purpose – This paper aims to critically examine the change in accounting treatment for goodwill pursuant to international financial reporting standards (IFRSs) by reference to the Australian reporting regime.

Design/methodology/approach – The paper discusses and compares the former Australian and the new IFRS treatments for goodwill. This comparison focuses on the advantages and potential complexities of the new method, with the aim of identifying the issues and challenges that preparers, independent auditors and those involved in corporate governance face in complying with the new requirements.

Findings – The paper highlights that the identification and valuation of cash-generating units and goodwill require numerous assumptions to be made in estimating fair value, value in use and recoverable amount. Considerable ambiguity and subjectivity are inherent in the IFRS requirements.

Research limitations/implications – Findings suggest that future research should examine how financial report preparers and corporate governance mechanisms are dealing with the complex change required by the new goodwill accounting treatment and how the many critical issues involved in auditing the resulting figures are being addressed.

Practical implications – The research has practical implications for financial report preparers in identifying the issues that must be addressed in complying with the international goodwill accounting treatment. In turn, the paper highlights conceptual issues of relevance to auditors in their role of providing assurance on the resulting accounting numbers. It also has implications for others involved in corporate governance, such as audit committee members, in emphasising the areas in which they should be providing oversight of the accounting judgments. These issues are of relevance in any reporting regime based on IFRSs.

Originality/value – While much has been written about the mechanics of the new goodwill accounting requirements, there has been a lack of critical research highlighting the many problems and ambiguities that will arise in the application of those rules.

Modelling direct and indirect water requirements of construction

Water consumed directly by the construction industry is known to be of little importance. However, water consumed in the manufacture of goods and services required by construction may be significant in the context of a building's life cycle water requirements and the national water budget. This paper evaluates the significance of water embodied in the construction of individual buildings. To do this, an input-output-based hybrid embodied water analysis was undertaken on 17 Australian non-residential case studies. It was found that there is a considerable amount of water embodied in construction. The highest value was 20.1 kilolitres (kL)/m2 gross floor area (GFA), representing many times the enclosed volume of the building, and many years worth of operational water. The water required by the main construction process is minimal. However, the water embodied in building materials is considerable. These findings suggest that the selection of elements and materials has a great impact on a building's embodied water. This research allows the construction industry to evaluate design and construction in broad environmental terms to select options that might be cost neutral or possibly cost positive while retaining their environmental integrity. The research suggests policies focused on operational water consumption alone are inadequate.

Using protocol analysis to explore the creative requirements engineering process

Protocol analysis is an empirical method applied by researchers in cognitive psychology and behavioural analysis. Protocol analysis can be used to collect, document and analyse thought processes by an individual problem solver. In general, research subjects are asked to think aloud when performing a given task. Their verbal reports are transcribed and represent a sequence of their thoughts and cognitive activities. These verbal reports are analysed to identify relevant segments of cognitive behaviours by the research subjects. The analysis results may be cross-examined (or validated through retrospective interviews with the research subjects). This paper offers a critical analysis of this research method, its approaches to data collection and analysis, strengths and limitations, and discusses its use in information systems research. The aim is to explore the use of protocol analysis in studying the creative requirements engineering process.

Creativity, requirements and perspectives

Is there room for more creativity in information systems? This article grew out of an AWRE'04 panel discussion on creativity in requirements engineering, and the impact of requirements engineering on creativity in systems engineering and systems use. Both panel and article were motivated by the goal of identifying a framework for understanding creativity in a larger context and thus establishing a potential structure for future research. The authors' research backgrounds differ widely and, at times, our views conflict occasionally, quite sharply. We make underlying world views - our own and those of relevant disciplines - explicit; identify the paradox caused by the need to be functionally creative while leaving room for creativity in successive stages; and argue for a multi paradigm framework for resolving this paradox.

Criteria for the systematic review of health promotion and public health interventions

Systematic reviews of public health interventions are fraught with challenges. Complexity is inherent; this may be due to multi-component interventions, diverse study populations, multiple outcomes measured, mixed study designs utilized and the effect of context on intervention design, implementation and effectiveness. For policy makers and practitioners to use systematic reviews to implement effective public health programmes, systematic reviews must include this information, which seeks to answer the questions posed by decision makers, including recipients of programmes. This necessitates expanding the traditional evaluation of evidence to incorporate the assessment of theory, integrity of interventions, context and sustainability of the interventions and outcomes. Unfortunately however, the critical information required for judging both the quality of a public health intervention and whether or not an intervention is worthwhile or replicable is missing from most public health intervention studies. When the raw material is not available in primary studies the systematic review process becomes even more challenging. Systematic reviews, which highlight these critical gaps, may act to encourage better reporting in primary studies. This paper provides recommendations to reviewers on the issues to address within a public health systematic review and, indirectly, provides advice to researchers on the reporting requirements of primary studies for the production of high quality systematic reviews.

Understanding the ontological requirements for collaborative web-based experiential learning

The challenge of human-computer interaction forces educationalists to think of new ways to understand the social, historical and contextual nature of learning. Discussion and exchange of ideas enable learners to learn together. However, the granularity of the Webbased learning context is extensive; consequently, e- Courseware design faces new dilemmas. Only through targeted research will it be known with any certainty whether Web-based learning gives rise to a new type of learning dissonance [1]. It has been proposed that converged theoretical paradigms that underpin particular digitised or context-mediated learning systems are forcing learners into new ways of thinking [2]. This paper presents an overview of the plans for an experimental project designed to understand the ontological requirements for experiential instructional environments. This project is a joint research initiative involving three Universities in the Asia/Pacific region. Results will be used to inform educationalists interested in developing instructional strategies for a global community.

Requirements engineering during global software development : some impediments to the requirements engineering process : a case study

Requirements engineering is not straightforward for any software development team. Developing software when team members are located in widely distributed geographic locations poses many challenges for developers, particularly during the requirements engineering phase. This paper reports on a case study concerning a large software development project that was completed in just seven months between users located in the UK and software developers from an international software house based in New Zealand. The case indicates that while “true” global requirements engineering may be desirable in achieving economy of resources, a “hybrid” structure of requirements engineering processes is more realistic so that lasting relationships with clients may be formed, and requirements engineering activities achieved. The main impediment to the process of requirements engineering during global software development, as recounted by the team members in this case, is communication. Communication issues may be further described in terms of four categories: distribution of the clients and the development team, distribution of the development team, cultural differences between the clients and the development team and cultural differences among the development team.

Contextual factors which influence creativity in requirements engineering

In many disciplines, creativity has been recognised as an important part of problem solving. In business, creativity enables the generation of better solutions and provides an opportunity to gain a competitive advantage. In Information Systems (IS) creativity assists developers in finding solutions to difficult problems by helping to efficiently utilise available resources and allows the more effective planning and running of complex projects. One of the most important aspects of IS development is Requirements Engineering (RE), the development activity aimed at understanding the needs and wants of IS customers. While previous RE researchers suggested that creativity is crucial in building high quality information systems, fostering creative outcomes in RE is difficult as it is affected by the multifaceted socioorganisational context within which IS development commonly takes place. This paper reports findings from an empirical study into creativity in RE. Specifically, it reports various contextual factors which were found to influence the creativity of individuals and their teams