Experiments in scientific computation on the PlayStation 3

The Sony PlayStation 3 (PS3) offers the computational power of a parallel processor at low cost, which makes it a great starter unit for development in parallel programming. To explore the capabilities of the unit, we took a simple ray tracing program and extended it to render triangulated height field data across the PS3’s 6 synergistic processing units (SPUs). We also implemented the heat averaging equation as a precursor to CFD analysis on the PS3. In our studies, we found the Cell engine in the PS3 to be a powerful machine, however great care must be taken while developing because its unique platform calls for many levels of optimization to ensure efficiency.     

Who’s calling? The effect of phone calls and personal interaction on tax compliance

International Tax and Public Finance - Most tax agencies use letters as the method of communicating with taxpayers. Still, other technologies exist that could be more effective. This paper reports...     

HR Practices,Customer-Focused Outcomes,and OCBO: The POS-Engagement Mediation Chain

Employee Responsibilities and Rights Journal - The mechanisms through which HR practices impact employee-level and organizational-level outcomes continue to intrigue HR academicians and...     

Dramaturgical performances and work-leisure dynamics in rural-to-urban domestic migrations

Situated against the backdrop of the dramatic socio-economic transformation of the Chinese society that propelled mass rural-to-urban migrations, this study focused on a group of female migrant workers who worked in the city as paid live-in-caregivers. The research explored how their work and leisure lives were related to their self-perceptions, self-expressions and social interactions. A total of 18 in-depth semi-structured interviews with female migrant workers who had moved from rural areas of China to the capital city of Beijing and worked as home caregivers were conducted. By adopting Goffman’s front stage and back stage model and bridging the literature in the fields of migration, caregiving, and leisure, the study examined the experiences and personal meanings of being a migrant caregiver and the strategies and practices migrant caregivers used to present and assert themselves in the everyday life of migration.     

Changes in Assortative Matching and Inequality in Income: Evidence for the UK*

The extent to which like-with-like marry is important for inequality as well as for the outcomes of children who result from the union. In this paper, we present evidence on changes in assortative mating and its implications for household inequality in the UK. Our approach contrasts with others in the literature in that it is consistent with an underlying model of the marriage market. We argue that a key advantage of this approach is that it creates a direct connection between changes in assortativeness in marriage and changes in the value of marriage for the various possible matches by education group. Our empirical results do not show a clear direction of change in assortativeness in the UK between the birth cohorts of 1945–54 and 1965–74. We find that changes in assortativeness pushed income inequality up slightly, but that the strong changes in education attainment across the two cohorts contributed to scale down inequality.     

En-route sector capacity estimation methodologies: An international survey

Reliable estimation of en-route sector capacity is important, especially in high-density traffic areas where controller workload is the driver. En-route sector capacity is commonly estimated using fast-time computer simulation techniques employing models of controller workload. This paper analyses the methodologies employed by a number of countries in Europe and North America, to estimate the capacity of en-route airspace. The data used was obtained from airspace planners and managers. The survey involved interviews using pre-designed questionnaires. The results show that there are two main models used in the simulation of controller workload, and that there is considerable variation both in their application and controller involvement in the capacity estimation process.     

Is Knowledge Cursed When Forecasting the Forecasts of Others?

Financial decision makers (lenders, insurers, advisees) often need to estimate how well others make decisions. Is knowledge a blessing or a curse when forecasting others' forecast accuracy? The authors show that this depends on its type. Within a single experimental setting, they identify and test 4 distinct information types that have different effects on forecast accuracy. First, the authors revisit the well-known “curse of knowledge” and show that it may have resulted from entirely arbitrary, uninformative anchors. Second, we show that in contrast, genuinely informative cues purged of anchoring potential enhance estimation accuracy. Third, richer, more detailed financial information has no effect even for participants better able to interpret it. Fourth, domain experts do not overimpute others' forecast ability. The authors conclude that in financial settings knowledge may be a blessing or a curse, or have no effect depending on its type.     

How financial information disclosure affects risk perception. Evidence from Italian investors’ behaviour

This paper investigates how different representations of financial information may be appraised in terms of complexity and usefulness, and how financial disclosure influences individuals’ risk perception. By using a consumer testing analytical approach, we run a survey on a sample of Italian investors: 254 bank customers were submitted 4 different templates, each combining a different typology of data (historical and prospective) and framing (words, numbers and charts) to indicate the same level of risk and return of four real-life financial instruments. Representation formats partially overlap with those mandated by regulators and used within the financial industry. Results show that the perceived riskiness of financial products is affected by the way information is disclosed. Perceived complexity of the financial information disclosure intensifies perception of riskiness of the product solicited. Gender, age, personal traits, behavioural biases and financial knowledge, do also play a role. Overall, given investors’ heterogeneity and behavioural biases, neither simplifying disclosure nor a ‘one-size-fits-all’ approach may be sufficient to ensure correct risk perception and to prevent unbiased investment choices.     

A longitudinal study of the characteristics, business creation process and outcome differences of Canadian female vs. male nascent entrepreneurs

This paper concerns a longitudinal study, of a random sample of nascent entrepreneurs in Canada (based on an initial screening sample of 49,763 households). We study gender differences, including number and type of gestational activities, the characteristics of the business created, and the status of the start-up effort after the 4th year of data collection. Logistic regression is used to predict the creation of an operating business from gender and other variables. Four of nine gender difference hypotheses were supported. Findings show that women who are members of a start-up team are six times more likely to achieve an operating business.