自适应聚类视角下学科领域主题分析——以物流学科为例

基于改进关键词重要性和近邻传播聚类算法,提出了一种学科领域主题分析方法,通过词频分析法和作者潜意识行为计算高频关键词权重,借助共词分析和Ochiai系数构建带权重高频关键词相似性矩阵,利用近邻传播聚类算法对学科领域主题进行自适应提取与分析。以CSSCI收录的2015—2019年物流学科领域期刊论文为研究对象,借助新方法对其进行主题分析,研究结果表明:高重要性的关键词不一定是核心主题,核心主题与同一簇内其它成员关键词最为相似。与此同时,近五年物流学科存在“降本增效”“区域物流一体化”“现代物流技术研究与创新”“物流体制改革与产业转型升级”“农村物流与农产品物流”“电子商务与跨境电商”“可持续发展理念”等七大热门主题。     

均衡性原则之“权重公式”的反思与重构——一个法经济学的分析视角

为避免均衡性原则适用的模糊抽象,具体化成为学界共识,量化方法颇受关注。阿列克西设计的“权重公式Wij”的影响力较大,发挥着定序量化分析的功能,但公式的适用范围受限及构成要素的赋值不当,降低了其应用价值。解决问题的关键在于重构“权重公式”的适用框架,法经济学的分析方法能强化公式的适用能力,使量化过程更具客观性。在以利益为核心的成本收益分析框架下,“权利”作为公式的适用对象,经必要变量的逻辑改进,“权利”的保护强度作为公式的构成要素;经济学上的价值及“权利”的损害导向确立公式的量化基础,继而“权利”能实现货币等价或价值评估。尤其基于经济学的替代理论,“权利”之间构成了新的权衡模型：“权衡公式Bij。”在“权衡公式”的结果判定上,Bij≥1,手段不符合均衡性,不应改变“初始状态”下“权利”的比例关系;Bij＜1,手段符合均衡性,且尽力选择使Bij值更小之手段。“权衡公式”兼具体系化与精细化分析能力,保持了严密结构和强操作性,为更普遍的实践应用提供新思路。在“权衡公式”与成本收益分析的关系上,它是一种融合成本收益分析的均衡性判断。     

Does the social security fund help non-financial enterprises to transform from the virtual to the real?

At its 19th National Congress, the Communist Party of China vowed to “strengthen the financial sector’s ability to serve the real economy.” However, many studies provide evidence of the opposite trend, a problematic “transition from the real to the virtual,” among Chinese enterprises. Meanwhile, the investment efficiency of China’s Social Security Fund (SSF), a public fund, attracts much attention. In this context, we use A-share listed companies in China from 2009 to 2018 to study the relationship between holding by the SSF and enterprise financialization. We find that SSF holding significantly inhibits financialization and that this effect is non-linear. Mechanism analysis indicates that SSF holding suppresses enterprises’ financialization mainly by improving their governance. Moreover, SSF holding more strongly inhibits small-scale (vs. large-scale), state-owned (vs. non-state-owned), and non-eastern (vs. eastern) enterprises in China. Furthermore, SSF holding can alleviate corporate value impairment caused by financialization. The conclusions enrich theoretical research and provide empirical evidence that may help regulatory authorities to guide investment by enterprises and prevent financial risks.     

Reconciling sustainability and discounting in Cost–Benefit Analysis: A methodological proposal

The incorporation of the intergenerational equity objective has rendered the traditional Cost–Benefit Analysis (CBA) approach obsolete for the evaluation of projects presenting an important number of environmental externalities and for those whose impacts extend throughout a long period of time.Based on the assumption that applying a discount rate rewards current consumption and, therefore, that it is only possible to introduce a certain intergenerational equity in a Cost–Benefit Analysis, in this work we propose an approach to discounting based on a different rationale for tangible and intangible effects. We designed two indicators of environmental profitability: a) the Intergenerational Transfer Amount (ITA), which quantifies in monetary units what the current generation is willing to pass on future generations when an environmental restoration project is carried out, and b) the Critical Environmental Rate (CER), measures the implicit environmental profitability.These concepts were tested through an empirical case study pertaining to the assessment of an Erosion Control Project in the southeast of Spain. The results yield traditional profitability indicators that are higher — and probably closer — to the real values set by the contemporary society. The information provided by the environmental profitability indicators proposed renders more transparency to the quantification of the levels of intergenerational equity applied, thereby facilitating the difficult reconciliation of the CBA technique with the objective of sustainability.     

宏观经济统计数据结构变化分析及其对中国的实证

对于宏观经济统计数据的结构变化进行分析已成为研究数据质量的核心内容之一。本文从经济系统的角度运用联合估计诊断模型对我国 3 6个宏观经济时间序列的结构变化进行了全面的分析 ,发现了数据异常的特点和规律。研究结论表明 :大部分异常点的出现或多或少都是以聚集成堆的形式出现的 ,它们之间存在深刻的内在联系 ,孤立的异常点不是我国宏观经济时间序列的主要特征 ;几乎所有的原始序列都有显著的偏度 ,过多的峰度也是明显的 ,因此它们被显著地拒绝认为服从正态分布 ;大部分变量的原始序列和异常点修正后序列虽然都呈现出非ARCH特征 ,但是ARCH2、ARCH4、ARCH8的P值却有一定程度的不同。     

现金流对上市公司投资行为的影响分析

本文采用实证方法，检验我国上市公司融资约束、现金流与投资决策之间的关系。以沪深300指数样本上市公司为基础，结合面板数据和时间数据，利用线性回归方法检验公司投资行为与现金流量、营业收入、负债率、托宾Q等财务指标的关系，并进一步分析上市公司的投资与现金流量等指标的敏感性。     

中国产业结构变迁与经济增长的实证分析

本文对我国1978～2002年产业结构变化状况和产业结构变化趋势进行定量分析,考察产业结构变动引起各产业部门对经济增长的贡献和作用的相应变化.实证检验表明,这一时期我国产业结构变动基本符合工业化发展的演变规律,但从我国经济发展的要求看,产业结构转换仍滞后于总量增长的要求;进一步优化产业结构,需要着力解决"三农"问题、提升企业的国际竞争力、加快发展第三产业.     

Identification and analysis of underdeveloped resource-rich regions in China

This paper analyzes the existence of developmental views and compares the results of previous studies for underdeveloped regions.In view of the limitations of previous studies,this study details regional unit,expands index system,applies factor-analysis to structure index system,uses the fuzzy comprehensive evaluation model to improve analytic hierarchy process,and identifies the economic developmental levels of 384 regions,including 4 municipalities,333 cities at prefecture level,and 47 counties under the jurisdiction of province.The levels of the 47 counties are identified by dividing the rank of comprehensive values of more than 337 regions unit into five equal graduations and then matching the 47 counties with the five-graduation results.This study provides the distribution of resources-rich region in China qualitatively and quantitatively in terms of coal,oil gas and other 14 kinds of metal mineral resources.Finally,by matching the two parts of results,this study identifies the distribution of underdeveloped resource-rich regions （URRRs）.URRRs are mainly distributed in Shaanxi,Shanxi,Guizhou,Yunnan,Sichuan,He ＇nan,Shandong,Guangxi and Gansu provinces,which accounts for 78.57% of the total in China.To a certain degree,the result of this paper proves that ＂resources curse ＂ existing in the national stratification plane in later 20^th century still takes places in some cities in China,especially in the counties of these cities ＇jurisdiction.     

旅游集散中心对旅游潜在需求的激活机制研究——基于创新的视角

在简要介绍旅游集散中心及旅游潜在需求基础上,基于创新的视角,系统分析了旅游集散中心对旅游潜在需求的激活机制,指出旅游集散中心对潜在需求的影响与激活的机制是通过多种机制,借助于创新性旅游服务以及文化、理念、时尚等作用于潜在旅游消费需求的不同层面,从而激活旅游潜在需求。     

RTAs:中国进一步扩大对外经贸合作的新途径

20世纪90年代尤其是世界贸易组织建立和运作以来,区域贸易安排迅猛发展,呈现出许多新的特点.在经济全球化和中国已加入世界贸易组织的新形势下,中国积极参与和推进区域贸易安排是在更大范围、更广领域和更高层次上参与国际经济技术合作与竞争、以开放促改革促发展的新途径.应进一步加强区域贸易安排的研究,建立国家区域贸易安排运作机制,制定切实可行的区域贸易安排计划,以提升中国经济的竞争力,迎接世界区域贸易安排发展带来的机遇和挑战.