Hunting the unobservables for optimal social security a general equilibrium approach

We study the optimal size of a pay-as-you-go social security program for an economy composed of both permanent-income and hand-to-mouth consumers. While previous work on this topic is framed within a two-period partial equilibrium setup, we study this issue in a life-cycle general equilibrium model. Because this type of welfare analysis depends critically on unobservable preference parameters, we methodically consider all parameterizations of the unobservables that are both feasible and reasonable—all parameterizations that can mimic key features of macro data (feasible) while still being consistent with micro evidence and convention (reasonable). The baseline model predicts that the optimal tax rate is between 6 percent and 15 percent of wage income.

Multi-core security defense system (MSDS)

Today's security program developers are not only facing an uphill battle of developing and implementing. But now have to take into consideration, the emergence of next generation of multi-core system, and its effect on security application design. In our previous work, we developed a framework called bodyguard. The objective of this framework was to help security software developers, shift from their use of serialized paradigm, to a multi-core paradigm. Working within this paradigm, we developed a security bodyguard system called Farmer. This abstract framework placed particular applications into categories, like security or multi-media, which were ran on separate core processors within the multi-core system. With further analysis of the bodyguard paradigm, we found that this paradigm was suitable to be used in other computer science areas, such as spam filtering and multi-media. In this paper, we update our research work within the bodyguard paradigm, and showed a marked improvement of 110% speedup performance with an average cost of 1.5 ms.

Supermarket Healthy Eating for Life (SHELf): protocol of a randomised controlled trial promoting healthy food and beverage consumption through price reduction and skill-building strategies

Background: In the context of rising food prices, there is a need for evidence on the most effective approaches for promoting healthy eating. Individually-targeted behavioural interventions for increasing food-related skills show promise, but are unlikely to be effective in the absence of structural supports. Fiscal policies have been advocated as a means of promoting healthy eating and reducing obesity and nutrition-related disease, but there is little empirical evidence of their effectiveness. This paper describes the Supermarket Healthy Eating for LiFe (SHELf) study, a randomised controlled trial to investigate effectiveness and cost-effectiveness of a tailored skill-building intervention and a price reduction intervention, separately and in combination, against a control condition for promoting purchase and consumption of healthy foods and beverages in women from high and low socioeconomic groups.
Methods/design: SHELf comprises a randomised controlled trial design, with participants randomised to receive either (1) a skill-building intervention; (2) price reductions on fruits, vegetables and low-joule soft drink beverages and water; (3) a combination of skill-building and price reductions; or (4) a control condition. Five hundred women from high and low socioeconomic areas will be recruited through a store loyalty card program and local media. Randomisation will occur on receipt of informed consent and baseline questionnaire. An economic evaluation from a societal perspective using a cost-consequences approach will compare the costs and outcomes between intervention and control groups.
Discussion: This study will build on a pivotal partnership with a major national supermarket chain and the Heart Foundation to investigate the effectiveness of intervention strategies aimed at increasing women’s purchasing and consumption of fruits and vegetables and decreased purchasing and consumption of sugar-sweetened beverages. It will be among the first internationally to examine the effects of two promising approaches - skill-building and price reductions - on diet amongst women.

Myopia and pensions in general equilibrium

The US social security tax rate has doubled in the last half century.

Does the degree of myopic behavior that we observe in the US justify the size of the social security program? To study this question we build a computable general equilibrium model that is composed of life-cycle permanent-income consumers who save optimally and “hand-to-mouth” consumers who just consume their disposable income. Our model is a continuous-time, general equilibrium extension of the model by Cremer et al. (Int Tax Public Financ 15(5):547–562, 2008), though we abstract from the redistributive function of social security to focus on myopia. Retirement is a choice variable in our model and the social security program is designed to mimic the US program in which the annuity value of benefits increases with the retirement age. Also, we allow for delayed claiming beyond the date of retirement. The model matches a variety of important data targets relating to saving and retirement. We find that small reductions in the social security tax rate provide significant welfare gains to both groups of consumers.

Loyalty program attributes and their influence on retail customer satisfaction

This paper empirically examines the extent to which loyalty program attributes explain variations in satisfaction with the retail offer. Two dimensions of loyalty program attributes are introduced including hard attributes and soft attributes. Store satisfaction is examined in terms of the elements of the retail offer. The results suggest that emphasis on hard and soft attributes enhance customer satisfaction with a retailers’ merchandise, trading format, customer service and customer communication. Additionally, hard attributes have a more significant influence than soft attributes on satisfaction with all elements of the retail offer excluding merchandise.

Assessing the relationship between loyalty program attributes, store satisfaction and store loyalty

After a decade of research there is still much to understand about the relationship between loyalty programs and whether they deliver on their promise of building customer loyalty towards a store and understanding the mediating role of store satisfaction. Our results suggest that loyalty program as a summary construct, explains a significant proportion of the variance in store satisfaction and store loyalty. However, disaggregation of the construct into hard versus soft attributes, promotes greater specificity, precision and accuracy in uncovering the differential impact on store satisfaction and store loyalty.

Investigation of stakeholders commitment to information security awaremess programs

Organisations have become increasingly dependent on technology in order to compete in their respective markets. As IT technology advances at a rapid pace, so does its complexity, giving rise to new IT security vulnerabilities and methods of attack. Even though the human factors have been recognized to have a crucial role in information security management, the effects of weakness of will and lack of commitment on the stakeholders (i.e., employers and employees) parts has never been factored into the design and delivery of awareness programs. To this end, this paper investigates the impacts of the availability of awareness programs and end-user drive and lack of commitment to information security awareness program design, delivery and success.

Transitioning towards an improved I.T. security culture in organizations

The study developed a model to help Australian organisations transition toward an improved IT security culture. The IT Security Culture Transition Model improved organisations' IT security awareness, knowledge, attitude and behaviour allowing them to better protect their IT security. The model can be implemented face-to-face and as an e-learning program.

Staging a cultural collaboration: Louise Lightfoot and Ananda Shivaram's first Indian Dance Tour of Australia, 1947-1949

One of the most highly stylized of the Indian forms of dance-drama, Kathakali has also received the greatest amount of attention on the global stage. We argue that its international exposure began with the performances of Ananda Shivaram, as managed by the Australian impresario Louise Lightfoot, in a landmark intercultural collaboration. From 1947 to 1949, Shivaram, along with an ensemble of Australian dancers, successfully toured Australia, adapting a range of Kathakali dance-dramas to performance in an international context. Lightfoot organized and publicized the tour, translated texts, and explained the art of Kathakali - virtually unknown - to excited Australian audiences. Using newspaper reports, advertisements, program brochures, and promoter's notes, we chart the performer's and the impresario's journeys, how they fostered intercultural understanding, and how Shivaram became a cultural ambassador for India.