Numerical classification of curvilinear structures for the identification of pistol barrels

This paper demonstrates a numerical pattern recognition method applied to curvilinear image structures. These structures are extracted from physical cross-sections of cast internal pistol barrel surfaces. Variations in structure arise from gun design and manufacturing method providing a basis for discrimination and identification. Binarised curvilinear land transition images are processed with fast Fourier transform on which principal component analysis is performed. One-way analysis of variance (95% confidence interval) concludes significant differentiation between 11 barrel manufacturers when calculating weighted Euclidean distance between any trio of land transitions and an average land transition for each barrel in the database. The proposed methodology is therefore a promising novel approach for the classification and identification of firearms.     

Having a Bad Month: General Versus Specific Effects of Stress on Crime

We examine whether particular types of stress are related to particular types of crime or whether all types of stress are related to all types of crime. Our estimates are based on analyses of within-individual change over a 36 month period among recently incarcerated offenders. We find that assault is most strongly related to family stress, suggesting that conflicts between family members lead to assault. Economic crimes (property crimes and selling illicit drugs) are most clearly related to financial stress, suggesting that these crimes often reflect attempts to resolve financial problems. On the other hand, crime is generally unrelated to stress from illness/injury, death, and work. The results support the idea that criminal behavior is a focused response to specific types of problems rather than a general response to stress. They are more consistent with explanations that focus on perceived rewards and costs (e.g., the rational-choice approach) than with explanations that portray negative affect as a generalized impetus toward violence or crime (e.g., frustration aggression approaches).     

The role of Chinese face in the perpetration of dating partner violence

This study explored the associations between the perpetration of partner violence and two types of face orientation-protective and acquisitive-in Chinese societies. Data from a convenience sample of 3,388 university students from Hong Kong, Shanghai, and Beijing were analyzed. The participants completed the Protective and Acquisitive Face Orientation (PAFO) Scale Short Form and the Revised Conflict Tactics Scale (CTS2) to measure their face orientations and experience of perpetrating violence against their dating partner. Acquisitive face orientation (AFO) was positively associated with the self-reported perpetration of physical and psychological partner violence. No significant associations were found between protective face orientation (PFO) and partner violence perpetration. Gender differences were found across all types of dating violence. City of residence, age, and SES were also associated with partner violence in specific ways. The findings gave insights on the possible mechanisms between partner violence and the concept of face to be explored in future research.     

Gender symmetry in the self-reporting of intimate partner violence

Research has not conclusively determined whether men and women are equally likely to commit intimate partner violence (IPV). One explanation for the disparity in previous findings may be gender-based differences in reporting styles. The present study investigated whether there was any gender difference in self-reported IPV prevalence. A total of 3,740 Chinese couples from a representative population in Hong Kong were interviewed. Self-reports of men-to-women and women-to-men IPV between spouses were compared. Gender was controlled for to evaluate whether age, education, the Chinese concept of face, and other violence-related characteristics would affect the self-reporting of IPV. Findings supported gender symmetry in self-reported IPV prevalence as well as a moderate interspousal agreement in the self-reports. After adjustment for covariates, face was a significant factor predicting the interspousal differences in both men-to-women and women-to-men physical IPV.     

The role of inspection sequence in compliance with the US Occupational Safety and Health Administration's (OSHA) standards: Interpretations and implications

We examined the Occupational Safety and Health Administration's (OSHA) inspections in the US to identify the effects of repeated inspections and the time between inspections on non-compliance. Our sample included 549,398 inspections conducted from 1972 through 2006 in manufacturing plants in the 29 states where federal OSHA enforces the law. We controlled for inspection type, industry, establishment size, and year. The number of total violations cited fell by 28%–48% from the first to the second inspection; after that, the numbers declined much more slowly. These effects were found in every one of the four sub-periods examined. The number of violations cited increased with each additional year since the prior inspection after controlling for other variables; however, the increases were small, totaling approximately 15% over five years. OSHA should probably give higher priority to first time inspections than to repeated inspections. The current requirement that at least two years elapse between planned inspections should probably be lengthened.     

借力第三方市场 推进泛北部湾合作

发展中国家和地区参与区域经济合作的实践表明,"南—北"("弱—强")型合作模式成功机率较高。广西与东盟应立足现有基础,联手引进欧美日韩等发达国家的资金、技术和人才等,努力提升"弱—弱"型为主的合作模式,开辟一条借力第三方市场、推进泛北部湾经济合作的新路径。如利用中国—东盟博览会合作平台、打好区域性招商组合牌、主动切入发达国家跨国公司价值链分工体系、加大对发达国家中小企业引进力度等。     

Precarity and Vulnerability: Rubber Plantations in Northern Laos and Northern Shan State,Myanmar

ABSTRACT

In northern Laos and Northern Shan State in Myanmar, there has occurred a rapid expansion of rubber plantations, both by large economic concessions and by smallholder farmers. The impact of the introduction of rubber differs by place. This article analyses the impact of the introduction of rubber in two villages in Northern Shan State and two in Luang Namtha Province, Lao PDR. We differentiate vulnerability and precarity while assessing the changes that women and men have experienced, which allows us to problematise the long-term vulnerability of seemingly well-adapted farming households. We argue that the strategies that farmers have chosen to improve their situation today will lead to unsustainable livelihoods in the long term. We also link the analysis of vulnerability and precarity to changes in household gender relations. Notwithstanding increased precarity, rising household cash incomes and external support have improved women’s position in some places while hardly affecting gender relations in others.