从反核威慑战略到最低核威慑战略:中国核战略演进之路

当前学者们对中国核战略的争论焦点在于,没有任何一种现有核战略定义能够完全涵盖中国核政策的特点。本文认为,正确理解中国核战略,需要摆脱现有核战略理论概念体系的束缚。只有从中国核战略产生和发展的具体时代背景中寻找线索,才能认识到,中国核战略经历了从反核威慑战略到最低核威慑战略的巨大转变,而中国长期大规模备战核战争遗留下来的物质遗产和思想基础,仍然对中国核战略产生着巨大的影响力。中国学者应从中国核战略实践出发,参与构建主流话语体系,为核战略学科建设做出自己的贡献。     

全球减排路线图的正义性——对胡鞍钢教授的全球减排路线图的评价与修正

任何全球减排路线图的绘制都无法脱离国际正义而具有生命力。气候变化问题的特性要求全球减排路线图尊重具有两面性的国际气候正义:环境正义和发展正义,需要考虑国家间公平、人的公平和代际公平。仅以人类发展指数(HDI)作为衡量国家承担减排责任的标准缺乏足够的正义,至少还需要加入人均历史累积排放和气候变化脆弱性两个指标。三者分别体现气候变化正义性中的人的平等发展权、减排责任分担和对受害者在排放权上的补偿。综合三大指标后的四分组分类,才是更体现正义性、更容易被接受和执行的路线图。从正义性出发,中国应承担相应的减排责任,并努力推动全球减排进程,但也要注意维护自身的发展权益。中国在全球减排中的作为,应是在国际正义与国家发展战略间取得平衡。     

Who Migrates? Tracking Gendered Access to Migration Within Households “In Flux” Across Time

ABSTRACT

In Indonesia, traditional gender ideals tend to depict men as legitimate migrants while women who move are deemed “out of place.” This male migrant-as-breadwinner household arrangement has been complicated in the past 30 years by gendered migration systems and practices in Asia that favor women. Drawing upon a household survey (N = 1,203) and in-depth interviews (N = 55), we use “time tracks” (Robertson, 2014 Robertson, S. (2014). The temporalities of international migration: Implications for ethnographic research. ICS Occasional Paper Series, 5(1), 1–16. [Google Scholar]) to interrogate gendered dynamics within the household “in flux” (Huijsmans, 2014 Huijsmans, R. (2014). Becoming a young migrant or stayer seen through the lens of “householding”: Households “in flux” and the intersection of relations of gender and seniority. Geoforum, 51, 294–304.[Crossref], [Web of Science ®] , [Google Scholar]). Foregrounding active negotiations within migrant households, we illustrate the continuously changing gender relations as they interact with, and respond to, the gendered migration systems and practices over time.     

20世纪末以来中、美与东盟的三边互动关系——以权力转移为视角

中国的崛起对美国和东盟均产生重大影响,导致中、美和东盟在经贸、政治和认知方面形成了互动关系。由于经济领域的区域经济一体化、贸易转移效应和政治领域东亚一体化的排斥效应等因素,中美在东亚的权力关系发生了转移,东亚秩序经历了结构性调整。三方在经贸、政治和认知的互动相互影响并呈正相关关系,使得东亚的权力转移在和平中实现。互动中仍存在一些问题需要三方调适和合作加以解决。     

中苏(俄)关系的历史演进及其当前启示

从中苏到中俄,从同盟、对抗到伙伴,这三种关系模式如同历史本身的有机发展一样,彼此之间有着深厚的逻辑关联。一方面,同盟和对抗模式为伙伴模式提供了极为丰厚的历史遗产,对其产生了不可割舍的内在影响和制约。另一方面,伙伴模式在20世纪90年代后之所以能够得到全面、持续而又深入地构建,是与其对同盟和对抗模式所进行的辩证继承和扬弃分不开的。     

Virtopsy: postmortem minimally invasive angiography using cross section techniques--implementation and preliminary results

Postmortem investigation is increasingly supported by Computed Tomography (CT) and Magnetic Resonance Imaging (MRI). This led to the idea to implement a noninvasive or minimally invasive autopsy technique. Therefore, a minimally invasive angiography technique becomes necessary, in order to support the vascular cross section diagnostic. Preliminary experiments investigating different contrast agents for CT and MRI and their postmortem applicability have been performed using an ex-vivo porcine coronary model. MSCT and MRI angiography was performed in the porcine model. Three human corpses were investigated using minimally invasive MSCT angiography. Via the right femoral artery a plastic tube was advanced into the aortic arch. Using a flow adjustable pump the radiopaque contrast agent meglumine-ioxithalamate was injected. Subsequent MSCT scanning provided an excellent anatomic visualization of the human arterial system including intracranial and coronary arteries. Vascular pathologies such as calcification, stenosis and injury were detected. Limitations of the introduced approach are cases of major vessel injury and cases that show an advanced stage of decay.     

Community Influence on Adolescent Obesity: Race/Ethnic Differences

Using a sample of 20,000 adolescents (Add Health data), this study examined the influences of community poverty and race/ethnicity on adolescent obesity. Multilevel analyses revealed strong evidence for the unique influences of community poverty and race/ethnicity on adolescent obesity net of family characteristics. The prevalence of obesity is significantly higher in poor communities than in affluent communities; and it is higher among African Americans, Hispanics and Native Americans than among Whites. The interaction between race/ethnicity and community poverty indicates that race/ethnicity moderates the influence of community poverty on the prevalence of obesity. Although the prevalence of obesity is higher among minorities than among Whites, the influence of community poverty is stronger for Whites than for minorities, suggesting that unlike Whites, most minority groups may not accrue benefits of structural community advantages. The state of being overweight as the outcome variable provided essentially the same findings. The practical implications are discussed.     

A Prospective Study of Extreme Weight Change Behaviors Among Adolescent Boys and Girls

This study examined changes in extreme weight change attitudes and behaviors (exercise dependence, food supplements, drive for thinness, bulimia) among adolescent boys and girls over a 16 month period. It also investigated the impact of body mass index, puberty, body image, depression and positive affect on these attitudes and behaviors 16 months later. The participants were 847 young adolescents (411 boys, 436 girls). Participants completed questionnaires evaluating the above variables on three occasions, eight months apart. Girls obtained higher scores on exercise dependence, drive for thinness and bulimia. Changes in depression and body image importance were the strongest predictors of changes in these extreme attitudes and behaviors among boys; changes in depression, body dissatisfaction and body image importance were the strongest predictors for girls. The need for gender specific educational and intervention programs for adolescents are discussed.Marita McCabe PhD, Professor in Psychology in the School of Psychology, Deakin University, Melbourne, Australia. She has completed her PhD in 1981 on adolescent development, and has been completing research on various aspects of adolescent adjustment for 30 years. To whom correspondence should be addressed at 221 Burwood Highway, Burwood, Victoria 3125, Australia;Senior Lecturer in the School of Psychology, Deakin University, Melbourne Australia. She completed her PhD in 1990 on Childrens Language Development. In the last 10 years she has been researching body image concerns in adolescents and children     

MRI detects hemorrhages in the muscles of the back in hypothermia

Morphological findings in death due to hypothermia are variable and predominantly unspecific. Goal of this study was to check the usefulness of post-mortem cross-sectional imaging methods in the diagnosis of externally invisible findings in death due to hypothermia. Three consecutive forensic cases that died due to hypothermia were examined using post-mortem multi-slice computed tomography (MSCT) and magnetic resonance imaging (MRI) prior to autopsy. MSCT excluded traumatic skeletal and fatty tissue injury. Using MRI, it was possible to detect hemorrhages within the muscles of the back in all three cases, a so far unknown finding in death due to hypothermia. MRI also allowed the detection of hemorrhages in the iliopsoas muscles. Wishnewsky spots remained radiologically undetected using the present examination techniques. In conclusion, hemorrhages of the muscles of the back might serve as a new sign of death due to hypothermia; however, additional studies on their specificity are necessary. Post-mortem MRI is considered as a good diagnosing tool for muscular hemorrhages, with a great potential for examination and documentation.