A triple test for behavioral economics models and public health policy

We propose a triple test to evaluate the usefulness of behavioral economics models for public health policy. Test 1 is whether the model provides reasonably new insights. Test 2 is on whether these have been properly applied to policy settings. Test 3 is whether they are corroborated by evidence. We exemplify by considering the cases of social interactions models, self-control models and, in relation to health message framing, prospect theory. Out of these sets of models, only a correctly applied prospect theory fully passes the tests at present. Specifically, in broad agreement with the evidence, a gain frame has positive implications for welfare encourages disease prevention activity, though this does not apply if the perceived probability of the bad health outcome is large enough. We see our tests as being useful to identify how much health policy weight policy makers should assign to specific behavioral economic models; they are also useful to verify what next steps would be most useful in further research.     

Resilience and migration: Experiences of same-sex binational couples in Canada

ABSTRACT

A phenomenological research design was employed to investigate experiences of individuals in binational relationships who migrated to Canada with their partners due to discriminatory immigration laws that prevented them from remaining together legally in the United States. Participants (N = 17) were American (N = 7), British (N = 2), French (N = 2), Canadian (N = 1), Chinese (N = 1), Colombian (N = 1), Dutch (N = 1), and two with dual citizenship. This article centers on participants' experiences of resiliency throughout the migration process to Canada. Results revealed resilience in three overarching categories: building a life in Canada, re-careering in Canada, and creating social support networks. Implications for policy and practice are discussed.     

Predicting weed invasion in a sugarcane cultivar using multispectral image

The cultivation of sugar cane has been gaining great focus in several countries due to its diversity of use. The modernization of agriculture has allowed high productivity, which is affected by the invasion of weeds. With sustainable agriculture, the use of herbicides has been increasingly avoided in society, requiring more effective weed control methods. In this paper, we propose a statistical model capable of identifying the invasion of weeds in the field, using four color spectra as regressor variables obtained by a multispectral camera mounted on an unmanned aerial vehicle. With the exact identification of the weed infestation, it is possible to carry out the management in the field with herbicide applications in the exact places, thus avoiding the increase of the cost of production or even dispensing with the use of herbicides, effecting the mechanical removal of them. Results show that in the experimental field, it was possible to reduce herbicide spraying by 57%.     

A new semiparametric Weibull cure rate model: fitting different behaviors within GAMLSS

ABSTRACT

We propose a new semiparametric Weibull cure rate model for fitting nonlinear effects of explanatory variables on the mean, scale and cure rate parameters. The regression model is based on the generalized additive models for location, scale and shape, for which any or all distribution parameters can be modeled as parametric linear and/or nonparametric smooth functions of explanatory variables. We present methods to select additive terms, model estimation and validation, where all computational codes are presented in a simple way such that any R user can fit the new model. Biases of the parameter estimates caused by models specified erroneously are investigated through Monte Carlo simulations. We illustrate the usefulness of the new model by means of two applications to real data. We provide computational codes to fit the new regression model in the R software.     

Production planning and inventory control in a company manufacturing PC parts: A case study

In this paper, we present a case study on the production planning and inventory system in a company manufacturing personal computer (PC) parts. In the case study, the targets are specified for developing a system for production planning and inventory control. The current state of the company is analysed for clarifying the points necessary to achieve the targets. Also, a system based on the analysis is proposed and its effects are estimated.     

2012 JSS Award Winner: Book Division “Recovery” from Eating Disorders: Narrative-Based Clinical Sociology: A Summary by the Author

In recent years people with eating disorders have begun to discuss their experiences on the Internet. While attempts to explain eating disorders in contemporary society have concentrated on their etiology as problems of individuals, the family or society, in their postings on the Internet, some people who have recovered discuss eating disorders as “eating problems” caused by excessively strict dieting. Further, they believe they overcame their disorders by consuming regular meals. The present research attempts to shed light on both the conditions surrounding sufferers of eating disorders and the direction that some have taken to affect their recovery. In this article I focus on the narratives of two people who have recovered from bulimia nervosa. I examine why they refer to their illness as an eating problem, rather than accepting conventional explanations. Further, I consider what they are trying to achieve in doing so. Two results were obtained. First, it was determined that, though both of the subjects of this research were familiar with the conventional etiological explanations of eating disorders, they both also criticize the individual, familial and societal interpretations for providing no solution. Second, it became clear, through narratives explaining eating disorders as eating problems that can be solved via eating exercises, that the subjects were attempting to reclaim the means of ending their binging and regurgitation and, more broadly, the right to solve their own problems.