青年参加体育锻炼的心理健康效益

运用体育保健学、教育学、运动心理学等相关原理与方法,探究体育运动对青年心理健康影响的积极效益,进一步寻求解决青年心理健康问题的方法和措施,为实施素质教育,全面提高青年的心理健康水平提供依据.     

如何选择After Effects中的抠像工具

抠像大多运用于电影和电视的特效制作上,因此,掌握好这项技术是一个高端的影视制作人的必备条件之一。本文主要叙述了AfterEffects中抠像的一般流程．并且介绍了常用的几种抠像方法以及每种方法适用的环境。     

Constrained oscillation of a bubble subjected to shock wave in microvessel

A three-phase coupled model of the gas–liquid–solid oscillation system is established to analyze the oscillation characteristics of a bubble inside a micro blood vessel with various radii and its shape changes with different interface boundaries. The results show that unlike the spherical symmetric oscillation in an unbounded fluid, the oscillating bubble has significant asymmetric characteristics under the constraint of a flexible microvessel, especially while its radius reduces to the same order of magnitude as that of the bubble. Moreover, the variation of microbubble motion, whether the geometric shape or oscillation feature, exhibits obvious differences in the micro blood vessel compared with the rigid wall. The reasons behind these phenomena are analyzed in this paper. The conclusions have significant importance in the understanding of the mechanism of microvessel injury in ultrasound therapy.     

蛹虫草菌丝对罗氏沼虾免疫功能的影响

在罗氏沼虾饵料中添加w=1%、2%、3%蛹虫草菌丝能提高罗氏沼虾血清PO活力、肌肉SOD活力、 GSH-Px活力,并同时降低MDA含量.经嗜水气单胞菌攻毒后,实验组的免疫保护率也明显提高.结果证明,蛹虫草菌丝可提高罗氏沼虾的免疫能力,增强抗嗜水气单胞菌的能力.     

论高校德育过程的“四个联结”

高校德育实效性是当前我国领域面临的一个非常重要的理论和实践课题。主要以德育过程为出发点来探讨其基本路径,认为将正面性与批判性、计划性与即时性、可接受性与发展性以及理论性与实践性进行聚合,有助于提高德育的效果。     

新型低温哨音超流体陀螺模型

针对应用超流体发展高精度新型陀螺的可行性,研究利用交流约瑟夫森效应的低温超流体陀螺原理和典型方案. 首先对陀螺的交流约瑟夫森效应、转动信息与交流约瑟夫森频率关系以及检测等环节建模,并进行系统仿真. 验证了陀螺敏感恒定角速度（地球自转）的过程,进一步研究变输入角速度跟踪、敏感面积及薄膜面积等结构参数对精度的影响. 仿真结果表明,应用交流约瑟夫森效应的低温超流体陀螺原理发展新型高精度陀螺仪是可行的.     

Forecasting with Micro Panels: The Case of Health Care Costs

Micro panels characterized by large numbers of individuals observed over a short time period provide a rich source of information, but as yet there is only limited experience in using such data for forecasting. Existing simulation evidence supports the use of a fixed‐effects approach when forecasting but it is not based on a truly micro panel set‐up. In this study, we exploit the linkage of a representative survey of more than 250,000 Australians aged 45 and over to 4 years of hospital, medical and pharmaceutical records. The availability of panel health cost data allows the use of predictors based on fixed‐effects estimates designed to guard against possible omitted variable biases associated with unobservable individual specific effects. We demonstrate the preference towards fixed‐effects‐based predictors is unlikely to hold in many practical situations, including our models of health care costs. Simulation evidence with a micro panel set‐up adds support and additional insights to the results obtained in the application. These results are supportive of the use of the ordinary least squares predictor in a wide range of circumstances. Copyright © 2016 John Wiley & Sons, Ltd.     

A Flexible Functional Form Approach To Mortality Modeling: Do We Need Additional Cohort Dummies?

The increasing amount of attention paid to longevity risk and funding for old age has created the need for precise mortality models and accurate future mortality forecasts. Orthogonal polynomials have been widely used in technical fields and there have also been applications in mortality modeling. In this paper we adopt a flexible functional form approach using two‐dimensional Legendre orthogonal polynomials to fit and forecast mortality rates. Unlike some of the existing mortality models in the literature, the model we propose does not impose any restrictions on the age, time or cohort structure of the data and thus allows for different model designs for different countries' mortality experience. We conduct an empirical study using male mortality data from a range of developed countries and explore the possibility of using age–time effects to capture cohort effects in the underlying mortality data. It is found that, for some countries, cohort dummies still need to be incorporated into the model. Moreover, when comparing the proposed model with well‐known mortality models in the literature, we find that our model provides comparable fitting but with a much smaller number of parameters. Based on 5‐year‐ahead mortality forecasts, it can be concluded that the proposed model improves the overall accuracy of the future mortality projection. Copyright © 2016 John Wiley & Sons, Ltd.     

反思核风险,重视民生安全文化建设——关于核风险及其规避相关几个问题的哲学思考

核能发展是双刃剑,它在造福人类的过程中,其自身也存在着许多潜在的和现实的风险。本文立足于全球化风险传播、分配、危害等视域,深刻探讨了核风险的基本特征及其破坏性,并从资本负面效应与工具理性张扬相结合的维度,分析了核风险生成的原因,指明核风险的全球性对人类产生的破坏是巨大的、残酷的、深远的。藉此,强调加强民生安全文化建设的重要性,剖析了民生安全文化的人本价值取向及其道德规约功能。最后,本文指出,在我国核能事业走向深入发展的关键阶段中,应重视民生安全文化的建设,这一理念有利于避免资本负面效应以及工具理性张扬、价值理性弱化的趋势,有利于重塑核能发展的价值理性与道德理性,来预防、规避和限制核风险的发生,保证人的本体性存在与环境可持续发展之安全,促进社会的和谐与稳定。     

农户环保型农药选购的影响因素及其效应研究

利用大样本调研数据,基于计划行为理论框架和结构方程模型,实证检验了农户环保型农药选购行为的影响因素及其效应。本文研究发现,农户环保型农药选购行为主要受到态度、主观规范、知觉行为控制和意向等因素影响,而这些因素可由农药杀虫效果、家庭成员期望、农药使用经验和零售商推荐等突显信念进一步解释;同时,农户还普遍存在环保型农药知识贫乏的问题。此外,农户环保型农药选购行为能否实现,不仅受到具有主动性选购意向的直接影响,更受到具有一定程度被动性的知觉行为控制的直接作用,而且后者效应大于前者效应。结论为完善现行农药使用治理制度提供了微观证据支撑。