农村税费改革中存在的问题及对策

农村税费改革后,农民的负担减轻了,但税费改革中新出现的一些问题严重影响了税费改革的进程和效果。我国农村税费改革存在着城乡之间、城区与非城区农民之间负担不均衡、农村义务教育投入严重不足、村级经费短缺等亟待解决的问题。为此,应采取加大农村政府机构改革的步伐和力度、加大对农村义务教育的投入、加大中央和省级两级财政转移支付力度等措施,进一步完善农村税费改革。     

工业污染对环境质量的影响研究——基于时序数据的经验分析

本文选用1990～2005年期间我国六类能源的消耗指标,从时序维度考察了我国有色金属行业产量变化与其能源消耗之间的长期均衡关系和相互作用机制.研究发现,有色金属工业的产量增长并不必然导致环境的恶化,这一结论对我国现阶段的产业结构调整和政策取向具有一定的借鉴意义.     

Does too much government spending depress the economic development of transition economies? Evidences from dynamic panel threshold analysis

This paper investigates the relationship between government size and economic growth and determines the optimal level of government spending to maximize economic growth. The paper applies a dynamic panel data analysis based upon a threshold model to test the threshold effect of government spending in 26 transition economies over the period spanning 1993–2016. According to the analysis results, government expenditures have a threshold effect on economic growth, and there is a non-linear relationship depicted as an Armey curve in these transition economies. The findings indicate that a government size above the threshold government spending level adversely affects economic growth, while a government size below the threshold level has a positive effect. Furthermore, there is a statistically significant relationship between the two variables above and below that optimal level, even if we divide the sample into developed and developing countries. Our findings suggest that governments in transition economies should consider optimal government size at around the estimated threshold level to support sustainable economic growth.     

Is the environment‐friendly factor attractive to customers when purchasing electric vehicles? Evidence from South Korea

In a bid to reduce greenhouse gas emissions, several countries worldwide are implementing policies to promote electric vehicles (EVs). However, contrary to expectations, the diffusion speed of EVs has been rather slow in South Korea. This study analyzes consumer preferences for the technological and environmental attributes of EVs and derives policy and environmental implications to promote market diffusion of EVs in South Korea. We conduct a choice‐based conjoint survey of 1,008 consumers in South Korea and estimate the consumer utility function using a mixed logit model considering consumer heterogeneity. Based on the consumer utility function, we analyze consumers' willingness‐to‐pay (WTP) for EV attributes such as driving range, charging method, charging time, autonomous driving function, carbon dioxide (CO₂) reduction rate, and purchase price. The results indicate that the current low acceptance of EVs is due to their relatively high price and lack of a battery charging technology that satisfies consumers' expectations of the charging method and time. One interesting finding is that Korean consumers have a relatively higher WTP for the CO₂ reduction rate of EVs than consumers in other countries; however, they do not consider CO₂ reduction over other technological attributes when choosing EVs. This implies that the rate of CO₂ reduction of EVs is not an important factor for South Korean consumers when buying EVs. We also calculate the effect of CO₂ reduction with the market penetration of EVs and find that CO₂ reduction through the diffusion of EVs depends on the country's electricity generation mix.     

基于主成分分析的应急保障军队车辆器材供应商选择

分析了突发事件中军队车辆器材应急保障的特点,在此基础上建立了军队车辆器材供应商评价的指标体系,并将主成分分析应用于供应商的评价选择。根据应急保障车辆器材供应商的实际指标数据进行了实例计算,并对各供应商进行综合评价,验证了主成分分析在应急保障车辆器材供应商选择上应用的可行性与准确性。     

体操教学训练中学生心理障碍的成因分析与对策研究

体操教学训练中,由于体操动作的复杂性、多样性以及器械动作的危险性等对学生要求较高,特别在学习较高难度动作时常易出现心理障碍,本研究通过对体操教学训练中引起学生心理障碍的成因加以分析,并在此基础上提出了科学性对策以供同仁参考。     

关于财政审计大格局下固定资产投资审计的若干思考

当前各地审计部门正在积极探讨构建财政审计大格局,固定资产投资审计是财政审计的重要有机组成部分,本文从审计计划、审计目标、审计方法、审计成果利用等方面入手进行改革创新,以推进财政审计大格局下固定资产投资审计工作。     

浅析发展钢结构住宅的必要性

钢结构住宅是一种新型的结构体系,其无论在主体承重方面、墙体方面和楼板方面与传统住宅结构体系相比,都有着巨大的变化;同时,钢结构住宅在施工方面、设计使用方面、经济效益方面、产业化和可持续发展方面、住宅的可变性等方面与传统住宅相比,也有着巨大的发展优势;因此,钢结构住宅势必成为住宅业发展的主流方向。     

北京市各区县劳动力产业分布比较优势统计分析

北京市各区县劳动力总量分布的产业差别是明显的,其分布是有规律可循的.因此,对于北京市各区县功能区的划分可以站在劳动力产业分布比较优势的角度,采用统计分析的方法,深入分析北京市已经形成的劳动力产业分布规律,从而为城市功能区的划分提供劳动力布局的依据.     

A new approach to the identification of regional clusters: hierarchical clustering on principal components

This study focuses on the identification of regional business clusters as a primary step in the design and implementation of cluster-based development strategies. A methodology that has not been used previously to identify clusters is applied to data on inter-industry linkages from the input–output table of a region in northern Spain. The first advantage of this approach, hierarchical clustering on principal components (HCPC), over the use of factorial analysis alone, is that it involves the application of objective clustering techniques to the principal components analysis results, which leads to a better cluster solution. A second advantage is derived from using a mixed algorithm for the clustering process – a combination of the Ward’s classification method with the K-means algorithm – which improves the robustness of the final results.