贵州西部石漠化与土地保护

地处长江水系与珠江水系分水岭地带的贵州省西部,石漠化较严重。大多数石漠发生在正向岩溶地貌和落水洞、漏斗、峡谷陡坡上;在不易形成石漠的岩溶洼地、溶盆中,由于不合理工业取土诱发石漠化。岩溶石山上树木遭受毁灭以及陡坡地带盲目垦殖,加速了石漠化。在贵州容易形成石漠的自然背景下,违背自然的人文活动加剧石漠化发生和发展,导致山区土地资源逐渐枯竭。     

Land administration “best practice” providing the infrastructure for land policy implementation

Land administration systems, and particularly their core cadastral components, are an important infrastructure which facilitates the implementation of land use policies. While most land administration systems traditionally have a primary objective of supporting the operation of land markets, they are increasingly evolving into a broader land information infrastructure which supports economic development, environmental management and social stability in both developed and developing countries. While a great deal of attention is given to land use policies worldwide concerned with such areas as forest management, coastal zone management, environmental sustainability and managing the urban environment, less attention is given to the infrastructures which facilitate the implementation of the associated policies and programmes. Importantly, all these activities rely on some form of land administration infrastructure which permits the complex range of rights, restrictions and responsibilities in land to be identified, mapped and managed as a basis for policy formulation and implementation. As a result, there is an increasing interest in the concept of land administration infrastructures and their core cadastres, in the principles and policies concerned with establishing such infrastructures and in “best practices”. In addressing this need, this paper attempts to explain the evolving concept of land administration infrastructures, the concept of “best practice” and the concept of a land administration “tool box” of principles, policies, laws and technologies which are useful in reforming or re-engineering land administration systems in support of a broader land policy agenda.     

浅谈长庆油田原油流量计量管理信息系统的构建

分析了长庆油田的流量计量系统现状,针对现在的流量计计量系统,提出了长庆油田流量计量信息系统建设项目内容,该系统将长庆油田流量计量与数字化平台相结合,实现网络信息共享与管理。     

A non-parametric independence test using permutation entropy

In the present paper we construct a new, simple, consistent and powerful test for independence by using symbolic dynamics and permutation entropy as a measure of serial dependence. We also give a standard asymptotic distribution of an affine transformation of the permutation entropy under the null hypothesis of independence. The test statistic and its standard limit distribution are invariant to any monotonic transformation. The test applies to time series with discrete or continuous distributions. Eventhough the test is based on entropy measures, it avoids smoothed non-parametric estimation. An application to several daily financial time series illustrates our approach.     

The wage gap between Francophones and Anglophones: a Canadian perspective, 1970–2000

Abstract. The wage gap between Francophone and Anglophone men from 1970 and 2000 fell by 25 percentage points within Quebec, but only by 10 points Canada‐wide, largely because the wages of Quebec Anglophones fell by 15 points relative to other Canadian Anglophones. Accordingly, the Canadian measure of the Francophone gap better reflects the changing welfare of Francophones than the Quebec measure. Over half of the reduction in the Canadian Francophone wage gap is explained by rising Francophone education levels. In Quebec, the declining number and relative wages of Anglophone workers is best explained by a falling demand for English‐speaking labour.     

弦振动方程Cauchy问题广义解的结构

建立了弦振动方程Cauchy问题在L^2空间中的广义解，并证明了广义解在L^2空间中与古典解具有相向的结构．     

“Going global” and FDI inflows in China: “One Belt & One Road” initiative as a quasi‐natural experiment

This paper investigates the impact of “One Belt & One Road” as an exogenous policy shock on the utilisation of foreign capital in China in the short term. Based on provincial panel data for the years 2003–15, the empirical study is conducted with difference‐in‐differences design. The first difference is whether a province is an OBOR province, and the second is whether “One Belt & One Road” initiative has been proposed. The empirical results suggest the utilisation of foreign capital in OBOR provinces has decreased significantly compared to non‐OBOR provinces after the initiative has been proposed. The study has further shown that the OBOR construction not only means factor movements and projects but also stands for policy shock. Its impact on utilisation of foreign capital cannot be simply captured by the commonly quantifiable “going global” indicators, namely outward direct investment, overseas contracted projects or overseas labour services. The negative impact of the initiative on foreign capital utilisation is strongly reflected in the OBOR provinces with low levels of economic development, heavy fiscal burdens and high proportions of state‐owned economy. In the short term, the negative impact of the initiative on foreign capital utilisation may be due to its role in resource competition and signal delivering. The former means that the OBOR initiative may induce resource competition between “going global” and “bringing in,” and the latter suggests that this initiative is likely to be regarded as a “signal” by foreign investors that “going global,” not “bringing in,” has become the priority of the government.     

心理报酬与员工工作投入度关系的实证研究

通过对员工的访谈及结合162份有效问卷的数据分析,验证了员工心理报酬的四个维度,即富有挑战性工作、受到尊重、获得培训机会和享有弹性工作时间与员工工作投入度成正相关关系。在此基础上对工作设计提出:设立适当的绩效目标、轮岗,让员工不断去挑战自我,激发工作投入激情;建立评选机制,宣传先进事迹,以及塑造相互尊重的企业文化,以激发员工工作热情。     

The U.S. Department of Commerce’s approach to targeted dumping: the wrong test and the wrong response

The U.S. Department of Commerce (DOC) defines targeted dumping as a pattern of significant differences in the prices that importers charge in the U.S. to different purchasers, in different regions, or during different periods. If DOC finds targeted dumping, then it calculates the average dumping margin using zeroing, a practice that increases the calculated dumping duty. This article shows that DOC is using an inappropriate statistical test in targeted dumping investigations. The article also shows that a finding of targeted dumping does not justify the use of zeroing, an inherently flawed methodology that DOC has discarded in cases without targeted dumping.