Sensory analysis via multi-block multivariate additive PLS splines

In the last decade, much effort has been spent on modelling dependence between sensory variables and chemical–physical ones, especially when observed at different occasions/spaces/times or if collected from several groups (blocks) of variables. In this paper, we propose a nonlinear generalization of multi-block partial least squares with the inclusion of variable interactions. We show the performance of the method on a known data set.     

The role of medium conditioning in the population dynamics of the housefly

Summary The role of larval medium conditioning on the behavior of larvae and of ovipositing adults of the housefly,Musca domestica L., was investigated through behavioral preference tests. Larvae were strongly attracted to medium conditioned by themselves or other larvae, while adult females overwhelmingly oviposited in fresh medium. Medium conditioning occurs within a few hours after hatching of an egg cohort and is effective in preventing overcrowding of a single site by shutting off further oviposition within 24 hours after eggs are initially deposited. A model of medium conditioning optimizes density for developing larvae and could also provide for regulation of local larval populations. This study was carried out during the tenure of grants from the National Science Foundation (GB-35473) and The National Institutes of Health (1-R01-AI-10988-01) to the senior author.     

Implementation of an ergonomics program for the welding department inside a car assembly company

The premise for this project is to implement an ergonomics program for the welding department of a car assembly company, considering that this area represents the highest occupational risk in relation to musculoskeletal injuries. The project also allows the demonstration of the different implementation processes of an ergonomics program; it also permits the determination of individual risks faced by workers of the welding department, and finally gives a chance of improving common injuries using the sentinel system. The main challenge is to reduce musculoskeletal injuries and absenteeism among welders through actions implemented by the ergonomics program.     

Day Labourers' Work Related Injuries: An Assessment of Risks,Choices, and Policies

Literature and theory surrounding the informal economy in international contexts suggest that informal work arrangements may entail assuming various levels of risk, and that the higher the level of risk in an employment arrangement, the higher the premium paid to the worker. This study is designed to assess if a wage compensation for risk exists within the United States' day labour job market ‐ the most visible sector of the United States' informal economy. Using data from the 2005 National Day Labour Survey we find a statistically significant wage premium indicating that a risk‐wage tradeoff within the day labour informal economy exists. Ultimately, we argue that current policy interventions facilitated through day labour centres into the day labour market appear to be effective in mitigating the risks associated with this type of employment.

• Evidence of a risk‐wage premium in the day labour market suggests there is an incentive to assume higher levels of risk in work arrangements which presents significant concerns for worker safety.
• Higher levels of work related risks assumed by day labourers, may be minimized if they receive proper safety training through a formal venue such as a worker centre.
• Worker centres only serve 20 per cent of all day labourers in the United States, suggesting a need for the establishment of additional worker centres in other connected or industry based work sites, to help mitigate potential work related risks and injuries in the day labour market.

     

Socio-demographic Factors and Cancer Screening Among Foreign-Born Chinese,Cambodian and Vietnamese Women

Asian Americans are now the most rapidly growing minority group in the USA. Over 60 % Asian Americans in the USA are immigrants. Cancer has been the leading cause of death among Asian American women since 1980. Understanding the barriers to screening is essential to reduce the unnecessary burden of cancer. Little is known about cancer screening behaviors among foreign-born Asian women and how socio-demographic factors may influence these behaviors. Even less is known about disaggregated Asian subgroups. Using data from the Chicago Asian Community Survey, a local health assessment survey of three Asian subgroups in Chicago, Chinese, Vietnamese and Cambodian, this study found that breast and cervical cancer screening rates were much lower among foreign-born Asian women, 48 and 49 %, respectively, than the national rates for the general population, 72 and 83 %, respectively. Furthermore, we studied disaggregated data to determine cancer screening differences between communities. Findings from this study provide a critical evidence base to inform future research, policy and targeted interventions for Asian ethnic-specific populations.     

An Overview of Welfare Reform in Italy

Samuelson stated in 1967 that “the beauty about social insurance is that ... everyone who reaches retirement age is given benefit privileges that far exceed anything he has paid in”. Such an optimistic belief seems to have been widely shared in Italy, where until the beginning of the reform process in 1992 social security could be described as a continuous succession of highly generous and diversified promises of payment made by the state to the different categories of workers on the basis of salary earned in the final stage of working life. The pension reform introduced by the Dini government in 1995 led to the adoption of a contribution-based method of calculation, which meant a return to the forgotten “golden rule” that the financial equilibrium of pay-as-you-go systems is ensured only if the implicit yield is equal to the rate of growth of the taxable basis of social security contributions. Equilibrium would thus be safeguarded, restoring itself automatically after any accidental disruption caused by demographic or economic upheaval, and operating regardless of the capacity and will of governments and of the majorities supporting them. The great efforts made to build up sufficient consensus with respect to such radical modifications of principle were, however, accompanied by a marked caution in bringing the system into full effect. This has left the country with the problem of accelerating transition to the new mechanism of calculating contributions, applied initially only to the newly employed and pro rata to workers with less than 18 years of contributions paid in, thereby making for a very long period of transition. In such a connection, a recent proposal has suggested that the state should try to induce workers to agree freely to a reduction in their accrued pension entitlements through the public system in return for a share in the process of privatization. If government were to repay the pension debt “below par”, this would allow for greater savings on future expenditure by using part of the revenues of privatization to pay off the pension debt in advance rather than by using these sums to pay off the national debt. More radical approaches aiming at cutting back social spending, would fail to take into account the risks involved in the collapse of public trust and of the structures that have hitherto guaranteed the cohesion of Italian society and the conditions for entrepreneurial commitment. On the other hand, an unbridled bottom-up proliferation of networks of social cohesion, supplementary voluntary bodies and non-profit initiatives may involve the risk of further arbitrary action being taken in the name of income redistribution. The social market requires bottom-up action on the part of associations, but also the guarantee of state-imposed rules that are equal for all parties and of a market that is free from the distortions of competition regulated from the top. A welfare state that has too often disguised the redistribution of resources in non-transparent forms must be replaced by a transparent welfare system effecting an explicit redistribution of resources and allowing a suitably regulated market to operate without indulging continually in further forms of “correction”. This calls for the introduction of a microchip “citizen card”, able to offer characteristics both of uniformity and of fine-tuning in terms of specific conditions of age, income, assets, education, etc., so as to permit forms of selection and/or cost sharing where desirable. Some of the rights to welfare services incorporated in the “citizen card” could in fact be assigned in monetary form but restricted to specific uses. Such “social money”, conveniently based on modern technological transaction structures, could become the money of the state sector, the private sector, and the third sector of non-profit organizations and associations, enabling all parties to respond to the objective demand expressed by citizens in conditions of competition that are free of supply-side distortion.     

Methodological naturalism,saturation, and Psychology's failure to save the phenomena

Many scientists and philosophers of science have argued that metaphysical naturalism and methodological naturalism represent distinct and separable philosophical commitments. This claim is true in the sense that metaphysics and epistemology reflect different philosophical projects. The major question of interest to psychologists, however, is whether at the pragmatic level of research designed to discover the psychological sphere in which we live our lives, the metaphysical and the methodological realms are so tightly interwoven that some important aspects of our humanity cannot be faithfully revealed without distortion, or even missed altogether. This paper argues that, in light of its intellectual origins, methodological naturalism is informed by metaphysical naturalism at the level of its formulation, and, thereby, is by its nature more apt to reveal phenomena of certain ontological types and less apt to faithfully reveal phenomena of other ontological types. In this sense, metaphysical naturalism cannot help but subtly shape psychological investigation and thus insert itself to some degree into our understanding of many important psychological phenomena. The work of the French phenomenologist Jean-Luc Marion, particularly his concept of “saturated phenomena,” is briefly discussed by way of a call for greater methodological openness in psychological research – an openness that will permit psychological scientists to better “save the phenomena” in their accounts of human experience.     

Hurricane Destructive Power Predictions Based on Historical Storm and Sea Surface Temperature Data

Forecasting destructive hurricane potential is complicated by substantial, unexplained intraannual variation in storm-specific power dissipation index (PDI, or integrated third power of wind speed), and interannual variation in annual accumulated PDI (APDI). A growing controversy concerns the recent hypothesis that the clearly positive trend in North Atlantic Ocean (NAO) sea surface temperature (SST) since 1970 explains increased hurricane intensities over this period, and so implies ominous PDI and APDI growth as global warming continues. To test this "SST hypothesis" and examine its quantitative implications, a combination of statistical and probabilistic methods were applied to National Hurricane Center HURDAT best-track data on NAO hurricanes during 1880-2002, and corresponding National Oceanographic and Atmospheric Administration Extended Reconstruction SST estimates. Notably, hurricane behavior was compared to corresponding hurricane-specific (i.e., spatiotemporally linked) SST; previous similar comparisons considered only SST averaged over large NAO regions. Contrary to the SST hypothesis, SST was found to vary in a monthly pattern inconsistent with that of corresponding PDI, and to be at best weakly associated with PDI or APDI despite strong correlation with corresponding mean latitude (R(2)= 0.55) or with combined mean location and a approximately 90-year periodic trend (R(2)= 0.70). Over the last century, the lower 75% of APDIs appear randomly sampled from a nearly uniform distribution, and the upper 25% of APDIs from a nearly lognormal distribution. From the latter distribution, a baseline (SST-independent) stochastic model was derived predicting that over the next half century, APDI will not likely exceed its maximum value over the last half century by more than a factor of 1.5. This factor increased to 2 using a baseline model modified to assume SST-dependence conditioned on an upper bound of the increasing NAO SST trend observed since 1970. An additional model was developed that predicts PDI statistics conditional on APDI. These PDI and APDI models can be used to estimate upper bounds on indices of hurricane power likely to be realized over the next century, under divergent assumptions regarding SST influence.     

Work Accident Insurance and Prevention in Southern Africa: The Case of Zimbabwe

The paper uses Zimbabwe as a case study to depict the situation in southern Africa with respect to work accident insurance and prevention, provided by workers' compensation schemes which are among the earliest forms of social security to be introduced in the region. There has been an unfortunate tendency to concentrate on compensation issues at the expense of prevention initiatives. Zimbabwe, however, has attempted to integrate the two, notwithstanding the fact that the coverage of the scheme is narrow and the benefits inadequate.