我国劳动力流动的动态和预期经济效应分析

劳动力流动是市场机制发挥配置资源作用的表现。从静态分析看,劳动力流动调剂了供需双方缺口,提高了整个社会福利水平。从动态角度看,我国的中心城市和经济先发展地区具有吸引资金、技术和知识资本的优越条件,决定着劳动力流动方向,而且因累积循环作用,引起回波效应大于扩散效     

论中国集体林产权流转监管制度的完善

在分析中国集体林产权流转现状的基础上,对其中存在的资产评估体系不完善、交易不规范、登记发证存在缺陷和监督机制不健全等问题进行了探讨,并提出了完善的建议:从规范林权变动审核制度、健全森林资源资产评估体系、完善林权流转合同制度和改革森林资源档案管理4个方面来加强集体林产权流转监管,以保护森林资源产权主体合法权益。     

Trends in Approval Times for Genetically Engineered Crops in the United States and the European Union

Genetically engineered (GE) crops are subject to regulatory oversight to ensure their safety for humans and the environment. Their approval in the European Union (EU) starts with an application in a given Member State followed by a scientific risk assessment, and ends with a political decision‐making step (risk management). In the United States (US) approval begins with a scientific (field trial) step and ends with a ‘bureaucratic’ decision‐making step. We investigate trends for the time taken for these steps and the overall time taken for approving GE crops in the US and the EU. Our results show that from 1996–2015 the overall time trend for approval in the EU decreased and then flattened off, with an overall mean completion‐time of 1,763 days. In the US in 1998 there was a break in the trend of the overall approval time. Initially, from 1988 until 1997 the trend decreased with a mean approval time of 1,321 days; from 1998–2015, the trend almost stagnated with a mean approval time of 2,467 days.     

Assessing qualitative similarities between financial reporting frameworks using visualization and rules: COREP vs. pillar 3

Financial institutions are struggling with larger volume, more specific and greater frequency of regulatory reporting after the global financial crisis in 2008, especially those that need to report to multiple jurisdictions. To help to improve reporting efficiency, this paper aims to assess the existence of similarities between templates related to credit and counter party credit risk of COREP and Pillar 3 regulatory reporting frameworks by applying Correspondence Analysis and Association Rules Mining. Our results suggest a high degree of overlap between these reporting frameworks, more prominently the three business functions as Front office, Finance and Risk. These patterns can be used as guidance for financial institutions to reshape their reporting architecture.     

Cultural Consonance in Leisure,Leisure Satisfaction,Life Satisfaction,and Self-Rated Health in Urban Taiwan

The purpose of this study threefold: to determine whether a shared cultural model of the importance of a set of leisure activities to a good leisure life existed in urban Taiwan, the degree to which cultural consonance in leisure mediates the relationship between leisure constraints and leisure satisfaction, and the degree to which leisure satisfaction affects life satisfaction and self-rated health. Results indicate that a cultural model of the importance of leisure activities to a good leisure life existed among sample members. Second, higher levels of self-reported participation in leisure activities that are culturally agreed upon as more important for a good leisure life are more strongly associated with leisure satisfaction than are activities culturally agreed upon as less important. Finally, leisure satisfaction strongly predicts both life satisfaction and self-rated health.     

内部控制影响国有企业竞争优势的中介效应研究

本文以2012—2019年国有上市公司为研究对象,基于公平竞争的市场环境持续改善的背景,实证研究内部控制对国有企业竞争优势的影响及作用机理。本文通过构建多元回归模型检验内部控制对国有企业竞争优势的提升效应,运用中介效应模型验证企业家精神、创新活动、融资约束在内部控制与国有企业竞争优势之间的中介作用。研究发现：内部控制质量与国有企业竞争优势显著正相关;企业家精神、创新活动与融资约束在内部控制对国有企业竞争优势的影响中存在部分中介效应。因此,可以从政府监管层面、制度层面和企业层面通过健全内部控制、激发企业家精神、促进创新活动以及降低融资约束等方式提升国有企业竞争优势。     

基于产品安全的北京农业标准化建设研究

北京实行农业标准化生产,不仅是发展北京都市型现代农业的重要标志,也为进一步规范农业生产生活,加强农业生产标准体系建设,提高产品质量安全,保障消费服务需要提供了强有力的保证。对农产品"三品一标"认证、标准体系建设、示范区及标准化管理等方面进行了研究,具体阐述北京市农业标准化的发展现状、制约因素,提出进一步发展的主要策略。     

Capital,credit constraints and the comovement between consumer durables and nondurables

Evidence indicates that consumer durables are more flexibly priced than nondurable goods and services. In otherwise standard two-sector neoclassical sticky-price models with flexible durable prices, following monetary tightening, nondurables decrease but consumer durables increase. Friction in lending between households can resolve the comovement problem if durable prices are sticky. However, if durable prices are flexible, friction in lending fails to generate joint decline. This paper resolves the co-movement problem by adding capital into a model with flexible durable prices and friction in lending. When capital is needed in production, monetary tightening reduces the relative price of durables which induces investment and decreases firms' real profits in the short run. Due to fewer profits remitted from firms, savers have a lower disposable income and cannot increase expenditures on consumer durables as much as otherwise. As a consequence, aggregate consumer durables decrease and there is a joint decline of nondurables and consumer durables.     

The implications of fossil fuel supply constraints on climate change projections: A supply-side analysis

Climate projections are based on emission scenarios. The emission scenarios used by the IPCC and by mainstream climate scientists are largely derived from the predicted demand for fossil fuels, and in our view take insufficient consideration of the constrained emissions that are likely due to the depletion of these fuels. This paper, by contrast, takes a supply-side view of CO₂ emission, and generates two supply-driven emission scenarios based on a comprehensive investigation of likely long-term pathways of fossil fuel production drawn from peer-reviewed literature published since 2000. The potential rapid increases in the supply of the non-conventional fossil fuels are also investigated. Climate projections calculated in this paper indicate that the future atmospheric CO₂ concentration will not exceed 610 ppm in this century; and that the increase in global surface temperature will be lower than 2.6 °C compared to pre-industrial level even if there is a significant increase in the production of non-conventional fossil fuels. Our results indicate therefore that the IPCC’s climate projections overestimate the upper-bound of climate change. Furthermore, this paper shows that different production pathways of fossil fuels use, and different climate models, are the two main reasons for the significant differences in current literature on the topic.     

外汇监管套利研究：基于外汇差额缺口视角

2008年全球金融危机后，学术界一致认为监管套利是导致危机的重要原因。当前，外汇管理处于渐进性改革中，放松外汇管制和人民币国际化步伐加快，外汇监管套利迅速发展。本文以进出口、收付汇、结售汇差额缺口为度量指标，对差额缺口的构成、影响因素进行分析，对外汇监管套利行为进行研究，在此基础上得出研究结论。