中国需要发展大城市

当今世界经济发展的一个基本特征,就是全球城市化的调整推进,而大城市的迅速发展,大城市在一个地区或国家的经济中取得支配性的地位是城市化推进的主要表现。     

大城市绩效审计的实践与思考

近年来,武汉城市建设日新月异．并快速跻身于全国大城市“万亿俱乐部”。城市现代化对审计服务现代化的要求越来越迫切,社会各界对提高公共服务绩效的期望越来越高涨.     

大城市周边地区发展误区及对策

本文从广义城市化的视角,从国情出发,分析和归纳我国大城市过度扩展对周边地区的影响与问题,提出我国大城市周边地区的问题上存在着三个认识误区.必需从紧凑城市布局、超前规划、维护社会公平和促进城市可持续发展的等方面,充分认识和把握大城市周边地区发展的一般趋势和规律.     

中外大城市建设用地容积率比较

以国内外几个大城市和地区为样本,通过比较这些城市和地区的整体容积率以及不同性质的建设用地的容积率水平,分析了我国当前城市建设用地的整体利用水平和可供提高利用效率的用地类型,提出了提高城镇建设用地集约化水平的建议。     

把宝鸡建成区域中心大城市

宝鸡市是我国西部重要的工业城市和交通枢纽 ,是陕西省仅次于西安的重要城市。把宝鸡建成区域中心大城市是实施西部大开发的客观选择和经济社会发展的客观要求。为此 ,应该加快宝鸡的经济发展和相应提升其重要的环境条件。     

中国大城市发展和都市区的形成

改革开放以来,我国大城市发展迅速,出现了都市区这种新的城市空间形态.都市区将成为新世纪我国经济和城市化发展的重要地域空间形式,同时也对传统的城市发展战略、城市规划和管理提出了新的要求和挑战.分析了中国大城市的发展趋势和空间演变特征,阐述了中国都市区现象的出现及其发展前景,并对中国都市区的概念、界定标准以及都市区规划等问题进行了探讨.     

试论我国大城市与中小城市发展走势

本文通过对我国大城市(包括特大城市)与中小城市(包括建制镇)自跨世纪以来的发展情况和存在问题的综合分析,论述今后我国城市发展的走势应当是大城市集约发展.中小城市蓄势发展和重点发展,以便促进大、中、小城市和小城镇协调发展,使我国城镇化发展进程迈上积极稳妥地推进城镇化和全面、协调、可持续健康发展的道路.     

论大城市的现代化

作者指出 ,大城市是工业化、城市化的产物 ,我国大城市还将继续增加和扩大。因此 ,对待大城市的发展 ,应从战略高度去认识和采取正确的方针。     

大城市交通拥堵的缓解策略

系统梳理了大城市交通拥堵的各种影响因素及其类型,分析了国内外治堵的主要思路、实施效果和难点问题。在此基础上,结合我国经济社会发展的趋势,提出了我国大城市交通拥堵治理的创新性方案和政策建议,并对实施中可能存在的风险进行了评估,提出了相关应对策略。     

论北京城市副中心建设

北京"单中心、同心圆式"的城市空间格局,使城市功能过度集中于中心城区,给中心城区造成了严重的交通拥堵和环境压力,限制了北京综合承栽能力的提升,影响到北京的可持续发展.东京、巴黎等都通过建设"副中心"解决了城市发展中的空间矛盾.北京应借鉴国际大都市发展经验,启动建设京西副中心、通州-亦庄副中心和顺义副中心,打造分散疏解中心区功能的重要空间栽体,解决北京城市发展中的空间结构矛盾.     

Multivariate analysis: Theory and practice

This paper reviews the problem of analyzing and estimating linear multivariate relationships. A convenient taxonomic framework is established for discussing a variety of multivariate procedures.     

Monetary rules: Theory and practice

President Charles Plosser discusses his views on the benefits of a systematic and rule-like approach to monetary policy.President Plosser outlines his proposals to indicate the likely behavior of the policy rate based on a few different Taylor-like rules that have been consistent with past conduct of monetary policy and are robust to our uncertainties regarding the true economic model.President Plosser believes that the model created by the Federal Reserve Board staff, called FRB/US, seems to be a reasonable starting point for providing economic forecasts based on those rule-based policies; however, other models would be useful to consider.     

Hierarchical integration in production planning: Theory and practice

This paper discusses the issue of integrating various decision levels in hierarchical production planning systems. First the theory is briefly reviewed and then two case studies are presented. It is argued that it is not sufficient to have a good decision model at every level of the decision hierarchy. The different models should be carefully integrated. The potential problems resulting from a lack of integration are discussed. These problems are then illustrated in two case studies in order to be able to focus on actual managerial issues. It is shown how different decision levels supported by decision models were integrated in these two applications. Two important features are the crucial role of crossfunctional managerial committees in the integration process and the introduction of slack to avoid disaggregation problems.We do not claim to be exhaustive in presenting the problems related to integration nor do we claim that the solutions to the cases are the best possible ones. We do, however, hope that this paper motivates production managers to take a serious look at their hierarchical planning procedures.     

美国次贷危机及对中国的启示

介绍了美国次级抵押贷款市场的演变,对此次次级抵押贷款市场危机爆发的诱因进行了详细探讨,同时结合中国住房抵押贷款市场的现状,对中美两国住房抵押贷款市场之间的相同及差异点进行比较分析,指出中国政府在防范住房抵押贷款风险方面应该予以重点关注的几个领域。     

化学课情境教学应用的理论和实践

文章运用文献法、观察法和逻辑分析法对学校化学课实施情境教学法的理论动因进行研究,探讨了学校化学课情境教学法的支撑理论和教学实例,论证了化学课实施情境教学法的必要性。     

Specification testing in discretized diffusion models: Theory and practice

We propose two new tests for the specification of both the drift and the diffusion functions in a discretized version of a semiparametric continuous-time financial econometric model. Theoretically, we establish some asymptotic consistency results for the proposed tests. Practically, a simple selection procedure for the bandwidth parameter involved in each of the proposed tests is established based on the assessment of the power function of the test under study. To the best of our knowledge, this is the first approach of this kind in specification of continuous-time financial econometrics. The proposed theory is supported by good small and medium-sample studies.     

Econometric estimation in long-range dependent volatility models: Theory and practice

It is commonly accepted that some financial data may exhibit long-range dependence, while other financial data exhibit intermediate-range dependence or short-range dependence. These behaviours may be fitted to a continuous-time fractional stochastic model. The estimation procedure proposed in this paper is based on a continuous-time version of the Gauss–Whittle objective function to find the parameter estimates that minimize the discrepancy between the spectral density and the data periodogram. As a special case, the proposed estimation procedure is applied to a class of fractional stochastic volatility models to estimate the drift, standard deviation and memory parameters of the volatility process under consideration. As an application, the volatility of the Dow Jones, S&P 500, CAC 40, DAX 30, FTSE 100 and NIKKEI 225 is estimated.