Systematic evaluation of design choices for software development tools

[Abstract]: Most design and evaluation of software tools is based on the intuition and experience of the designers. Software tool designers consider themselves typical users of the tools that they build and tend to subjectively evaluate their products rather than objectively evaluate them using established usability methods. This subjective approach is inadequate if the quality of software tools is to improve and the use of more systematic methods is advocated. This paper summarises a sequence of studies that show how user interface design choices for software development tools can be evaluated using established usability engineering techniques. The techniques used included guideline review, predictive modelling and experimental studies with users

An evaluation of the RAPID assessment-based process improvement method for small firms

[Abstract]: With increasing interest by the software development community in software process improvement (SPI), it is vital that SPI programs are evaluated and the reports of lessons learned disseminated. This paper presents an evaluation of a program in which low-rigour, one-day SPI assessments were offered at no cost to 22 small Australian software development firms. The assessment model was based on ISO/IEC 15504 (SPICE). About twelve months after the assessment, the firms were contacted to arrange a follow-up meeting to determine the extent to which they had implemented the recommendations from the assessment. Comparison of the process capability levels at the time of assessment and the follow-up meetings revealed that the process improvement program was effective in improving the process capability of many of these small software development firms. Analysis of the assessment and follow-up reports explored important issues relating to SPI: elapsed time from assessment to follow-up meeting, the need for mentoring, the readiness of firms for SPI, the role of the owner/manager, the advice provided by the assessors, and the need to record costs and benefits. Based on a meta-analysis of the program and its outcomes, advice and recommendations are provided to small firms and assessors. As well as providing validation of the assessment model and method, the outcomes from this research have the potential to better equip practitioners and consultants to undertake software process improvement, hence increasing the success of small software development firms in domestic and global markets

Electronic peer review: a large cohort teaching themselves?

[Abstract]: Electronic peer review can empower lecturers of large courses to produce rapid feedback, promote social interaction and encourage higher order learning for students. But what are the payoffs to educators? Do students recognise the benefits of such a system? Foundation Computing is one of the largest courses at the University of Southern Queensland. A system of electronic submission and peer reviewing with instructor moderation is now being used in this course. This system is innovative and unique and delivers benefits to students, lecturers and the University. This system has been evaluated, proven successful and is being considered for wider use

itSMF Australia 2009 Conference: summary report of ITSM standards and frameworks survey

[Abstract]: This report provides a summary of responses from surveys related to adoption of Information Technology Service Management (ITSM) frameworks. The surveys were conducted at the itSMF National Conference in Sydney in 2009. Two surveys were conducted: the Corporate survey for organisations and the other for Consultants and Trainers. For the Corporate survey 65 responses were received but only eight for the Consultant and Trainers survey. The responses for the Corporate survey came mainly from large organisations representing both the public and private sectors. The vast majority of organisations whose staff responded to the survey have adopted the IT Infrastructure Library (ITIL) and are making substantial progress in implementing this framework. Priority has been given to implementing the service desk function, change management and incident management processes. Some of the processes in v3 which were not in v2 show low levels of awareness and adoption. Many organisations are also advanced in their implementation of Prince 2, Balanced Scorecard, ISO 9001, ISO/IEC 27001 (Information Security), Government standards and the Project Management Body of Knowledge (PMBOK). The strongest motivating factor to implement IT Service Management is to improve the focus on IT service. The maturity level of ITSM processes is generally rated higher than in previous years with many reporting as repeatable (level 2) and defined (level 3). Most of the respondents have completed ITIL foundation training and many have also achieved intermediate and advanced qualifications. Commitment from senior management is identified as the most critical factor for successful ITSM implementation. Almost one half believe ITSM has met or exceeded their expectations although many stated it is too early to tell if ITSM has delivered benefits. There is strong consensus that the major benefit of ITSM is improved customer satisfaction. Many further benefits have been realised including improved response and resolution, clarification of roles and responsibilities, and improved IT service continuity. Unfortunately, most of the consultants and trainers who attended the conference as delegates or exhibitors did not complete the questionnaire, therefore the analysis of the eight responses may not be representative and care should be exercised in interpreting the results. Generally, the views expressed by the Consultants echoed those of the Corporate respondents and confirmed the strong move towards ITIL V3, as well as growing interest in ISO/IEC 20000 certification. The success factors favoured by the Consultants varied compared to those of the Corporate respondents. Compared to the responses to the Corporate survey, the Consultants and Trainers gave a higher ranking to the importance of sufficient funding for ITSM initiatives and documentation and integration of processes. Another difference was in the Consultants’ perceptions of the effectiveness of ITSM wherein the Corporate respondents gave a more positive view that ITSM met or exceeded expectations. As for the benefits from ITSM, only two of the top benefits reported by the Consultants were in the top five in the Corporate survey

Extended RBAC with role attributes

Though RBAC has been researched for many years as a current dominant access control technology, there are few researches to be done to address the further extension of the role which is the fundamental entity of RBAC. This paper tries to extend the role to a further level, the role attributes. Through the attributes, the function and operation on the role can be enhanced and extended. Through the attributes, ANSI RBAC is significantly extended. In the inheritance of hierarchical role, the privacy of its parental role can be kept by using HA (Hidden Attribute)

Genomic surveillance of methicillin-resistant Staphylococcus aureus at local, regional and national levels

Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of hospital-acquired infection, which is associated with increased cost and length of hospital stays and substantial morbidity and mortality. The rapid progression of whole-genome sequencing (WGS) technologies over the past decade has provided highly detailed and discriminatory insights into the epidemiology of MRSA. However, WGS is still not implemented in the routine surveillance of MRSA at a local, regional or national level. This thesis applies WGS to a number of questions and populations to describe its benefits. Standard infection control investigation commonly uses the antimicrobial susceptibility patterns (ASPs, patterns of susceptibility and resistance to commonly used antibiotics) of MRSA as a surrogate for bacterial relatedness. As they are readily available, ASPs are often combined with patient movement to evaluate putative MRSA outbreaks in hospitals. The accuracy of this method was evaluated by comparing linked cases based on MRSA ASPs versus linked cases based on whole-genome relatedness, using data from a year-long prospective observational cohort study of 1,465 MRSA-positive individuals. The sensitivity and specificity of ASP in the presence of a direct ward contact was 44% and 85%, respectively; in the presence of a shared residential post code, the sensitivity and specificity of ASP is 59% and 76%, respectively. This demonstrates that compared to WGS plus epidemiology, ASP and epidemiology does not reliably identify or refute transmission events. A lineage referred to as epidemic (E)-MRSA15 is largely considered to be associated with hospital settings, but an epidemiological and genomic investigation of a MRSA outbreak in a General Practice (GP) identified 15 people who were E-MRSA15 positive, the majority of which shared a link to a leg ulcer/podiatry clinic in the GP surgery. The outbreak had not been detected previously, and was only identified post-hoc from MRSA sequence data, highlighting the importance of MRSA sequencing to detect otherwise cryptic community outbreaks. The utility of WGS for the investigation of regional MRSA epidemiology was explored for two potentially high-risk MRSA lineages (USA300 and ST2371) that are otherwise unmonitored by current surveillance. Screening the genomes of MRSA isolated from 1,465 people identified over a 12-month period demonstrated that 4.2% of cases were positive for MRSA USA300, with multiple introductions and household transmissions identified. Five people were positive for ST2371, all of whom had a direct or indirect link to a substantial outbreak in an intensive care unit at Addenbrooke’s Hospital in 2011, thus confirming the value of WGS in regional epidemiological investigations. The feasibility and utility of incorporating WGS into routine national MRSA surveillance was evaluated through a combined epidemiological and genomic survey of MRSA bacteraemia undertaken in England over a one-year period. This captured 903 reported cases of MRSA bacteraemia, with 425 isolates available for sequencing. Almost two thirds of isolates were assigned to multi-locus sequence type clonal complex (CC) 22. The addition of MRSA genomes from published outbreak investigations showed that the study genomes could provide context for outbreak isolates and supported cluster identification. Potentially high-risk lineages were also detected. These findings support the integration of epidemiological and genomic surveillance for MRSA bacteraemia as a first step towards a comprehensive national surveillance programme

Implementing centralised IT service management: drawing lessons from the public sector

[Abstract]: The IT service management model represents a paradigm shift for IT organisations as it deemphasizes the management of IT assets and focuses on the provision of quality end-to-end IT services. This paper presents part of an in-depth study that examines the experience of a government agency, Queensland Health, in the implementation of a centralised IT service management model based on the ITIL framework. The paper sheds light on the challenges and breakthroughs, distils a set of critical success factors and offers a learning opportunity for other organisations. Outsourcing some activities and tool requirements to vendors was seen as one contributor to success although ensuring effective technology transfer to in-house staff was also necessary. Another success factor was centralisation of IT services. Commitment of senior management was also crucial as was a recognition of the need for effective change management to transform the organisational culture to a service-oriented focus

IT service management: towards a contingency theory of performance measurement

Information Technology Service Management (ITSM) focuses on IT service creation, design, delivery and maintenance. Measurement is one of the basic underlying elements of service science and this paper contributes to service science by focussing on the selection of performance metrics for ITSM. Contingency theory is used to provide a theoretical foundation for the study. Content analysis of interviews of ITSM managers at six organisations revealed that selection of metrics is influenced by a discrete set of factors. Three categories of factors were identified: external environment, parent organisationand IS organisation. For individual cases, selection of metrics was contingent on factors such as organisation culture, management philosophy and perspectives, legislation, industry sector, and customers, although a common set of four factors influenced selection of metrics across all organisations. A strong link was identified between the use of a corporate performance framework and clearly articulated ITSM metrics

E-Business Processes and Factors of Influence: One Model does not Fit All

This empirical study of organisational e-business adoption, utilising both qualitative and quantitative data collection methods, examines four major factors influencing adoption in multiple e-business process domains. Support is found for the proposition that factors influencing e-business adoption behaviour have different levels of impact across different ebusiness process domains. Different combinations of factors influence different e-business processes and for the most part this occurs independently of organisation size/resource capacity. Governments and powerful supply chain organisations have strong influence over some e-business strategy. In particular, e-government influence is strong with regard to use of e-mail and external web sites due to government’s regulatory compliance power, but weak with regard to operation of an organisation’s web sites. The implication of this research is that frameworks and models for e-business adoption will have greater relevance if they are developed for specific process domains rather than attempting to fit all areas of e-business