环境侵权损害赔偿制度的完善——从环境责任社会化的角度

近几年频频发生的环境污染事件不仅给我国的生态环境造成严重破坏,由此引发的赔偿数额也越来越大,在污染企业背负沉重负担的同时,受害人却往往得不到相应的赔偿。文章针对这一问题,分析了现有环境侵权损害赔偿制度的不足,提出建立环境责任保险与环境损害补偿基金制度是完善环境侵权责任制度的有效途径,但两者的作用不尽相同。     

高等学校实施双语教学的思考

随着经济和教育全球一体化的进程加快,高等学校的双语教学将占有越来越大的比重,双语教学对推动学校的发展和建设的作用日益明显。故研究从双语教学的必要性、影响双语教学的因素和香港四所大学授课语言环境所感等三个方面进行探讨,并对如何有效进行双语教学进行了分析,以期为高等学校双语教学的开展及实施提供理论和实践依据。     

论行政许可中的听证制度

《行政许可法》将听证制度纳入有利于保护当事人的利益,但关于听证的规定也存在亟待完善之处,如听证事项没有具体化,听证范围过小,依职权听证的性质难以确定等,这些都值得我们进一步研究和探讨。     

论政治文明的文化选择

文化即人化,它是人类所创造的精神成果和物质成果的总和;文明是文化的结晶,是文化主体对人类文化中野蛮性、愚昧性不断扬弃的结果,是人类有目的、有选择地过滤人类文化、形成合理文化内核的过程。中国当前的政治文明建设,需要走出“精华”和“糟粕”的简单二分的误区,用外来文化中国化、传统文化现代化,来开辟中国文化发展之路。弱化暴力色彩,强化仁政效应,构建中国特色的政治文明。     

匈牙利藏学家乌瑞学术生平及其藏学研究初探

乌瑞（Uray Géza,1921-1991）,匈牙利著名藏学家、语言学家,他在藏语言、藏族历史研究领域享有盛誉。乌瑞的学术生平大致可分为三个时期：藏学启蒙时期（1940-1948）,藏学研究初级阶段（1949-1973）,全身心投入藏学研究阶段（1973-1991）。其对藏族方言、古藏文的研究包括对藏文动词结构、藏文词后缀的探究;其对藏族的研究主要通过对古藏文历史文献的考证,以探讨吐蕃时期的历史制度等。乌瑞的研究成果体现其丰富的文献基础和扎实的文学功底。他对古西藏文献学的一些难题和有争议问题有着颇为审慎的判断力,这使他成为一代典范。目前,国内学界对乌瑞的研究不多,还有待进一步深入。     

Application of Social Choice Theory to Modify the Value Measure of Health Systems

Social Indicators Research - As a new composite indicator for capturing the value delivered by health systems of developing and developed economies, the Value Measure is the arithmetic average of...     

Variance estimation based on blocked 3×2 cross-validation in high-dimensional linear regression

In high-dimensional linear regression, the dimension of variables is always greater than the sample size. In this situation, the traditional variance estimation technique based on ordinary least squares constantly exhibits a high bias even under sparsity assumption. One of the major reasons is the high spurious correlation between unobserved realized noise and several predictors. To alleviate this problem, a refitted cross-validation (RCV) method has been proposed in the literature. However, for a complicated model, the RCV exhibits a lower probability that the selected model includes the true model in case of finite samples. This phenomenon may easily result in a large bias of variance estimation. Thus, a model selection method based on the ranks of the frequency of occurrences in six votes from a blocked 3×2 cross-validation is proposed in this study. The proposed method has a considerably larger probability of including the true model in practice than the RCV method. The variance estimation obtained using the model selected by the proposed method also shows a lower bias and a smaller variance. Furthermore, theoretical analysis proves the asymptotic normality property of the proposed variance estimation.     

大数据战略视野下我国信息网络安全立法分析

大数据战略视野下,很多国家纷纷制定、完善和执行着自己的信息网络安全法律,并已形成世界潮流.从国内外的大数据战略与信息网络安全立法分析来看,我国既有成绩,也有不足.对于我国信息网络安全的法律保障,目前需要完善的主要内容有:进一步明确国家信息网络安全立法的目的与宗旨;基本法层面,尽快构建完备的信息网络安全法律保障有机体系,重点包括政府信息公开法与个人信息保护法等;实施层面,加强与完善具体领域的单行法与配套法建设,增强法律规定的可操作性;完善法律框架之外的协作保障体系.     

感知风险对在线旅游产品购买意愿的影响分析

旅游电子商务发展迅猛,互联网购物平台的虚拟性和远程性强化了消费者感知风险,它也成为影响旅游电子商务发展的重要因素之一.文章聚焦消费者感知风险,运用SPSS 19.0及AMOS 21.0软件,构建以5个维度的感知风险为自变量、购买意愿为因变量、信任为调节变量的结构方程模型,探讨变量间相关关系.结果发现:感知风险对信任的影响差异较大,仅经济风险感知与信任呈显著负相关;感知风险对购买意愿总效应皆呈负相关;信任作为中介变量存在明显的调节作用,有效地降低了感知风险对购买意愿的负向影响.     

Bounds on the domination number of a digraph

A vertex subset S of a digraph D is called a dominating set of D if every vertex not in S is adjacent from at least one vertex in S. The domination number of D, denoted by \(\gamma (D)\), is the minimum cardinality of a dominating set of D. The Slater number \(s\ell (D)\) is the smallest integer t such that t added to the sum of the first t terms of the non-increasing out-degree sequence of D is at least as large as the order of D. For any digraph D of order n with maximum out-degree \(\Delta ^+\), it is known that \(\gamma (D)\ge \lceil n/(\Delta ^++1)\rceil \). We show that \(\gamma (D)\ge s\ell (D)\ge \lceil n/(\Delta ^++1)\rceil \) and the difference between \(s\ell (D)\) and \(\lceil n/(\Delta ^++1)\rceil \) can be arbitrarily large. In particular, for an oriented tree T of order n with \(n_0\) vertices of out-degree 0, we show that \((n-n_0+1)/2\le s\ell (T)\le \gamma (T)\le 2s\ell (T)-1\) and moreover, each value between the lower bound \(s\ell (T)\) and the upper bound \(2s\ell (T)-1\) is attainable by \(\gamma (T)\) for some oriented trees. Further, we characterize the oriented trees T for which \(s\ell (T)=(n-n_0+1)/2\) hold and show that the difference between \(s\ell (T)\) and \((n-n_0+1)/2\) can be arbitrarily large. Some other elementary properties involving the Slater number are also presented.