深圳十年规划建设理论与实践初探

本文根据深圳十年规划与建设经验,对市场经济条件下的城市规划理论、乡镇城市化、开放型城市的交通与电讯网络、城市生态环境的保护、投资软硬环境的建设,以及如何提高城市规划的科学水平等问题作了探讨。     

飞灰冲蚀条件下材料抗磨性能的试验研究

本文首先综述了国内外学者在研究塑性材料耐冲蚀磨损性能方面所取得的主要成果,并在专门建立的灰磨试验台上,对电站燃煤锅炉对流受热面常用材料20号钢、12Cr_1MoV合金铜以及铜、铝四种塑性材料进行了耐飞灰冲蚀磨损性能的试验研究。提出用材料的体积磨损率来定义材料的耐冲蚀磨损性能系数。并用它表征塑性材料的抗磨性能。该系数可直接应用于计算燃煤锅炉对流受热面的安全烟速。     

Reference priors for a product of normal means when variances are unknown

The reference priors of Berger and Bernardo (1992) are derived for normal populations with unknown variances when the product of means is of interest. The priors are also shown to be Tibshirani's (1989) matching priors.     

Is Tattooing a Risk Factor for Adolescents’ Criminal Behavior? Empirical Evidence from an Administrative Data Set of Juvenile Detainees in Taiwan

Juvenile crime affects not only the victims of the crime but also the delinquents’ future. How to prevent adolescent criminal behavior has become an important public policy issue. This study contributes to this interesting issue by examining the relationship between tattooing and adolescents’ criminal behavior. In particular, this study investigates whether or not having a tattoo/tattoos is connected to the incidence of various criminal activities, including: larceny, robbery, fraud, assault, drug use, and homicide. A unique sample of 973 juvenile detainees drawn from the administrative profiles in Taiwan and the coarsened exact matching method were utilized. Results show that compared to their nontattooed counterparts, tattooed juvenile detainees were significantly more likely to commit fraud, assault, drug abuse, and homicide by 3%, 13%, 9%, and 9%, respectively. In contrast, tattooing was not significantly associated with larceny or robbery. From a policy perspective, given the significant link between tattooing and criminal behavior, the presence of a tattoo in adolescents may serve as a valuable indicator regarding adolescents’ high probability of committing crimes.     

Fitting competing risks data to bivariate Pareto models

This paper revisits two bivariate Pareto models for fitting competing risks data. The first model is the Frank copula model, and the second one is a bivariate Pareto model introduced by Sankaran and Nair (1993 Sankaran, P. G., and N. U. Nair. 1993. A bivariate Pareto model and its applications to reliability. Naval Research Logistics 40 (7):1013–1020. doi:10.1002/1520-6750(199312)40:7%3c1013::AID-NAV3220400711%3e3.0.CO;2-7.[Crossref], [Web of Science ®] , [Google Scholar]). We discuss the identifiability issues of these models and develop the maximum likelihood estimation procedures including their computational algorithms and model-diagnostic procedures. Simulations are conducted to examine the performance of the maximum likelihood estimation. Real data are analyzed for illustration.     

审议制在欧盟食品安全监管中的运用

对于国务院的改革，杜钢建教授提出了专家参与的审议制。但是从理论到实践，我们需要考虑的是对于这个由杜钢建教授提出的政府内部专家、专业领域专家和代表民意专家参与的审议制该如何制度化，又该如何在实践中运用。对此，欧盟食品安全监管中的专家参与给我们提供了可资借鉴的经验，尤其是在疯牛病危机中它所经历的教训和由此进行的改革更是值得我们参考。     

试论在西夏的藏传佛教僧人及其地位、作用

12-13世纪初,藏传佛教噶举派、萨迦派僧人纷纷到西夏传法,使藏传佛教当时流行的主要密法传播到西夏并形成一定规模。西夏政府亦对藏传佛教显示出极高的热情,给予吐蕃僧人以很高的待遇,并在法律上享有诸多特权。藏传佛教僧人在西夏除了传法译经外,还在政府机构中担任职务、在外交活动中充当使臣等,对加强吐蕃民族与西夏境内各民族间的相互了解和联系有着积极的意义。     

高梁──苏丹草杂交种干物质积累分配及光合性能的研究

研究表量，高粱—苏丹草杂交种的单株生物量高，其干物质积累量高于甜高粱杂交种和粒用高粱杂交种．各器官的干物质积累量以分蘖茎为最高．并且增长迅速．主茎和分蘖茎的干物质分配率在生育后期无负值．高粱—苏丹草杂交种获得较高生物量的原因是分蘖性强，致使产生较高的ＬＡＩ和ＣＧＲ．     

中文"民族"一词源流考辨

民族研究学界长期认为 ,中文“民族”一词不见于中国古代文献 ,是近代由日本创造并传入中国的外来词 ,这一通行多年且似乎已成定论的观点缺乏根据。在中国古代文献中 ,“民族”作为名词形式应用于宗族之属和华夷之别的一些例证 ,证明了“民族”一词是古汉语固有的名词。在近代中文文献中 ,现代意义的“民族”一词出现在 19世纪 30年代。日文中的“民族”一词见诸 19世纪70年代翻译的西方著述之中 ,系受汉学影响的结果。但是 ,“民族”一词在日译西方著作中明确对应了volk、ethnos和nation等词语 ,这些著作对nation等词语的定义及其相关理论 ,对清末民初的中国民族主义思潮产生了直接影响。“民族”一词不属于“现代汉语的中 -日 -欧外来词”。     

异质性视角下中国农村居民减贫效应研究——基于FGT贫困指数的分解新方法

在我国即将完成脱贫攻坚背景下,异质性在居民减贫并防返贫进程中逐渐起到关键作用。本文通过反事实分析法将收入分布变迁分解为均值、方差以及残差三种变化,进而将其引入贫困分解中,对我国农村及区域贫困进行分解。研究表明,引入收入分布变迁贫困分解结果具有稳健性,且农村居民收入增长效应与离散效应存在非对称性,提高收入已不足以弥补收入差距扩大带来的贫困加深效应,而异质效应和离散效应间存在对称性,居民异质性在减贫进程中逐渐起到关键作用。同时从区域视角看,东部区域异质效应减贫效果明显高于增长效应;中部区域增长效应和异质效应均具有显著减贫效果;而西南区域增长效应的减贫效果最显著。