Should system dynamics be described as a 'hard' or 'deterministic' systems approach?

This paper explores the criticism that system dynamics is a ‘hard’ or ‘deterministic’ systems approach. This criticism is seen to have four interpretations and each is addressed from the perspectives of social theory and systems science. Firstly, system dynamics is shown to offer not prophecies but Popperian predictions. Secondly, it is shown to involve the view that system structure only partially, not fully, determines human behaviour. Thirdly, the field's assumptions are shown not to constitute a grand content theory—though its structural theory and its attachment to the notion of causality in social systems are acknowledged. Finally, system dynamics is shown to be significantly different from systems engineering. The paper concludes that such confusions have arisen partially because of limited communication at the theoretical level from within the system dynamics community but also because of imperfect command of the available literature on the part of external commentators. Improved communication on theoretical issues is encouraged, though it is observed that system dynamics will continue to justify its assumptions primarily from the point of view of practical problem solving. The answer to the question in the paper's title is therefore: on balance, no.

Closed-loop feedback computation model of dynamical reputation based on the local trust evaluation in business-to-consumer e-commerce

Trust and reputation are important factors that influence the success of both traditional transactions in physical social networks and modern e-commerce in virtual Internet environments. It is difficult to define the concept of trust and quantify it because trust has both subjective and objective characteristics at the same time. A well-reported issue with reputation management system in business-to-consumer (BtoC) e-commerce is the “all good reputation” problem. In order to deal with the confusion, a new computational model of reputation is proposed in this paper. The ratings of each customer are set as basic trust score events. In addition, the time series of massive ratings are aggregated to formulate the sellers’ local temporal trust scores by Beta distribution. A logical model of trust and reputation is established based on the analysis of the dynamical relationship between trust and reputation. As for single goods with repeat transactions, an iterative mathematical model of trust and reputation is established with a closed-loop feedback mechanism. Numerical experiments on repeated transactions recorded over a period of 24 months are performed. The experimental results show that the proposed method plays guiding roles for both theoretical research into trust and reputation and the practical design of reputation systems in BtoC e-commerce.

The effects of technical and social conditions on workplace trust

This paper investigates the extent to which the technical and social contexts of organizations independently affect levels of workplace trust. We argue that, in an organizational context, trust is not just a relationship between an individual subject (the truster) and an object (the trustee) but is subject to effects from the conditions of the work relationship itself. We describe the organizational context as comprising both a technical system of production (where work gets done through the specification of tasks) and a social system of work (where problems of effort, compliance, conformity and motivation are managed). We analyse the relationship between trust and these two aspects of workplace context (technical and social systems). We also operationalize this in terms of differences between industries,  occupational composition and human resource management practices. The model is tested using data drawn from the 1995 Australian Workplace Industrial Relations Survey. The results confirm that differences in industry, occupational composition and HRM practices all impact on levels of workplace trust. We review these results in terms of their implications for future research into the problem of analysing variation in trust at both the workplace and individual levels.

Towards a multicultural world : identifying work systems, practices and employee attitudes that embrace diversity

The research program described focuses on identifying the role of organisational culture, as reflected in workplace systems and practices, and employee and group attitudes in the outcomes of interactions among dissimilar parties. A systematic, theory-testing approach underlies the program, which aims to both develop and validate the diversity openness construct. The Perceived Dissimilarity-Openness Moderator Model developed from the research asserts that the affective, cognitive and behavioural consequences of diversity depend in part upon the perception of difference and subsequent quality and magnitude of the response to the perceived dissimilarity. When individuals or social systems (groups or organisations) are diversity-closed, outcomes are predicted to be less positive than when they are diversity-open.

Exploring creativity support systems for the NE"X"T generation

This paper explores the implementation of a creativity support system for tertiary students studying games design and development at Deakin University, Victoria, Australia. The students at the centre of this study are the ‘next’ generation of learners and are often called the net generation because of their pre-imposed affinity for all things ‘online’. The creativity support system for the games students is designed within a ‘whole’ systems context. Focusing on only one tool to augment a person’s creativity does not take into consideration social factors that are pertinent on a person ability to grow their creative behaviours. This study will present a set of factors that each creativity support system should employ to facilitate creative abilities within people, with particular focus on how social activities help to enhance creativity.

An evaluation framework for the qualitative investigation of a physical activity prescription program in rural Victoria

Physical activity (PA) has consistently been shown to improve ones' physical, social and mental health. Hence, the rationale for promoting regular physical activity is relatively straightforward. However, what is less clear from the literature is the mix of strategies, (i.e. 'what is working and why?'), to increase in physical activity levels within a population. Of particular interest to primary care is the concept of Physical Activity Prescription Programs (PAPPs) delivered by general practitioners (GPs).

Several examples of a PAPP exist within England, America, New Zealand and Australia. These all aim to encourage GPs to deliver physical activity advice to their patients effectively and in a timely manner. Notwithstanding, the authors of a recent review of published literature on PAPPs, reveal a deficit of evidence regarding the components for successful PA interventions.

This research through an ethnographic enquiry aims to build on the evidence formulated to date. Through a case study research design, the researcher has developed a methodology to define what is/is not working within this recent trend.

In two rural Divisions of GP, participants have been identified as key stakeholders in the implementation of a PAPPs. They are categorised according to three theoretical paradigms, namely, Policy Makers, Linkers and Adaptors. Following this the three paradigms will be studied on the contextual factors, the characteristics and behaviours of members within all three paradigms. The study has also further defined certain elements for investigation, these include the:
intention of the players
effort undertaken by players, and
effect of parties within.

Primarily qualitative data will be collected; through Desk Analysis (Policies, Strategic and Business plans), Site Visits (Participant Observation) and semi-structured interviews. This presentation defines a qualitative framework and methodology for investigating the outcome of programs that historically has been evaluated using quantitative measures. Hence, the author of this study aims to present a qualitative investigation and subsequent results, defining aspects of a PAPP that allow for successful and sustainable implementation.

Playing it safe : the influence of neighbourhood safety on children's physical activity − A review

Compared with previous generations, children spend less time playing outdoors and have lower participation rates in active transport. Many studies have identified lack of neighbourhood safety as a potential barrier to children's physical activity. This review describes concerns regarding ‘stranger danger’ and road safety, and discusses empirical studies that examine associations between neighbourhood safety and physical activity among youth. Variability of perceptions of safety between parents and youth are examined; ‘social traps’ are identified; and physical/social environmental interventions aimed at improving neighbourhood safety are discussed. A research agenda is suggested for further study of perceived and objective measures of neighbourhood safety and their associations with children's physical activity.

Exploring creativity support systems for the Ne"X"t generation

This paper explores the implementation of a creativity support system (CSS) for tertiary students studying Games Design and Development at Deakin University, Victoria, Australia. The students at the centre of this study are the ‘next’ generation of learners and are often called the Internet generation because of their pre-imposed for ‘online’ and being ‘connected’. The CSS for the games students is designed within a context that encompasses a ‘whole’ system, as focusing on only one component to augment a person’s creativity does not take into consideration the multitude of factors, for example social factors, that are pertinent on a person ability to grow their creative behaviours. This study will present a set of factors that each CSS should employ to facilitate creative abilities within people, with particular focus on how social activities help to enhance creativity.

Researching social inequalities in education : towards a Bourdieuian methodology

The injustices of ‘allowing certain people to succeed, based not upon merit but upon the cultural experiences, the social ties and the economic resources they have access to, often remains unacknowledged in the broader society’ (Wacquant, 1998, p. 216). Cognizant of this, the authors argue that education requires researchers’ renewed examination and explanation of its involvement in the construction of social and economic differences. Specifically, they make the case for researchers to consider the theoretical work of Pierre Bourdieu, outlining what they understand by a Bourdieuian methodology, which is informed by socially critical and poststructural understandings of the world. Such methodology attempts to dig beneath surface appearances, asking how social systems work. By asking ‘whose interests are being served and how’ (Tripp, 1998, p. 37) in the social arrangements we find, Bourdieu can help us to ‘work towards a more just social order’ (Lenzo, 1995, p. 17).

Detecting and mitigating HX-DoS attacks against cloud web services

Cyber-Physical Systems allow for the interaction of the cyber world and physical worlds using as a central service called Cloud Web Services. Cloud Web Services can sit well within three models of Cyber- Physical Systems, Software-as-a-Service (SaaS), Platform-as-a-Service (PaaS), and Infrastructure-as-a- Service (IaaS). With any Cyber-Physical system use Cloud Web Services it inherits a security problem, the HX-DoS attack. HX-DoS attack is a combination of HTTP and XML messages that are intentionally sent to flood and destroy the communication channel of the cloud service provider. The relevance of this research is that TCP/IP flood attacks are a common problem and a lot of research to mitigate them has previously been discussed. But HTTP denial of service and XML denial of service problem has only been addressed in a few papers. In this paper, we get closer to closing this gap on this problem with our new defence system called Pre- Decision, Advance Decision, Learning System (ENDER). In our previous experiments using our Cloud Protector, we were successful at detecting and mitigate 91% with a 9% false positive of HX-DoS attack traffic. In this paper, ENDER was able to improve upon this result by being trained and tested on the same data, but with a greater result of 99% detection and 1% false positive.

Promoting social inclusion of frail older people living in the community

The increasingly diverse needs and wants of Australia's ageing population, like those in many other societies, are drawing attention to aged care as an increasingly important area of broader health and social policy. Active qgeing and a focus on enabling people to remain living in their own homes in the community are two of the key components of this policy shift.

The policy shift towards active ageing recognises and aims to support the desires of older people to remain active members of their communities as they age. Active ageing is 'the process of optimising opportunities for physical, social and mental wellbeing throughout the life-course, in order to extend healthy life expectancy, productivity and quality oflife in older age' (AIPC 2008: 26).

According to the World Health Organization (WHO), the rights, needs, preferences and capacities of older people should be central to active ageing policies, and these should be framed by a life-course approach to ageing (WHO 2002). The development of age-friendly communities, social inclusion and engagement are emerging as key policy issues in the context of an ageing population.

Recent research demonstrates the importance of a sense of belonging in maintaining a sense of identity and increasing the wellbeing of an individual. The sense of belonging that comes about through community engagement also plays a role in successful adjustment to ageing, including prolonging good health and reduced risk of entry into residential aged care.

Ethical trust and social moral norms simulation : a bio-inspired agent-based modelling approach

The understanding of the micro-macro link is an urgent need in the study of social systems. The complex adaptive nature of social systems adds to the challenges of understanding social interactions and system feedback and presents substantial scope and potential for extending the frontiers of computer-based research tools such as simulations and agent-based technologies. In this project, we seek to understand key research questions concerning the interplay of ethical trust at the individual level and the development of collective social moral norms as representative sample of the bigger micro-macro link of social systems. We outline our computational model of ethical trust (CMET) informed by research findings from trust, machine ethics and neural science. Guided by the CMET architecture, we discuss key implementation ideas for the simulations of ethical trust and social moral norms.