大都市的扩展历程与大都市边缘区的城乡一体化问题分析

以一座三塔悬索桥为分析对象,采用SAP2000平台建立该桥空间动力有限元模型并进行非线性动力分析,研究了地震作用下,缆梁间设置中央扣、中塔与主梁间设置弹性索和二者组合使用对于该桥抗震性能的影响。分析结果表明,缆梁间设置中央扣可以显著减小主梁位移和中塔塔底剪力和弯矩,但会使各塔顶主索鞍座水平力和边塔内力增加;选用合理的弹性索刚度,可以有效控制主梁位移,同时使中塔与边塔的受力处于合理范围内;两者组合使用,能够进一步降低主梁位移和均衡中塔与边塔的受力,同时可以减小弹性索索力,更有利于中塔下横梁受力。     

中国对中亚能源投资的法律问题及对策

中国与中亚在能源方面合作不断加强,逐步形成了更加紧密的能源安全共同体,然而在双方投资与合作过程中诸多相关法律问题也不断涌现,使中国对中亚地区的能源投资风险加大。文章对中亚能源投资中对投资的界定、投资准入、政治风险及环境保护等相关投资法律问题进行研究与分析,提出中国在中亚投资与合作过程中的相应对策,将对中国能源投资规避风险、保护投资利益大有裨益。     

On asymptotic distribution of prediction in functional linear regression

There has been substantial recent attention on problems involving a functional linear regression model with scalar response. Among them, there have been few works dealing with asymptotic distribution of prediction in functional linear regression models. In recent literature, the centeral limit theorem for prediction has been discussed, but the proof and conditions under which the random bias terms for a fixed predictor converge to zero have been ignored so that the impact of these terms on the convergence of the prediction has not been well understood. Clarifying the proof and conditions under which the bias terms converge to zero, we show that the asymptotic distribution of the prediction is normal. Furthermore, we have derived those results related to other terms that already obtained by others, under milder conditions. Finally, we conduct a simulation study to investigate performance of the asymptotic distribution under various parameter settings.     

河南城镇化进程中的犯罪问题研究

河南省城镇化实施中心城市带动战略,对犯罪形势变化将产生深刻的影响:犯罪率将呈现先升后降最终稳定的态势;流动人口犯罪、青少年犯罪、女性犯罪、职务犯罪等将会激增;各种类型犯罪在短期内都会大量增加;一些社会管理控制相对薄弱的"边缘地带"有可能成为犯罪孳生地。河南省应实行综合治理的犯罪防控战略。     

广州定位国家中心城市及拓展战略腹地的构想

本文对广州被定位为“国家中心城市”应具备的功能进行了分析，指出要有能影响全国的综合实力和足够的发展空间，即腹地资源。后者恰是广州发挥中心城市功能作用存在的“软肋”。文章提出借广州“国家中心城市”新定位的契机，深化广州与泛珠三角的区域合作，拓展八大战略腹地，把广州“建成面向世界、服务全国的国际大都市”。     

中外主要中心城市更新演化比较研究

广州要建设国家中心城市，其特点和目标是什么？本文从西方近现代城市所倡导的城市更新运动为出发点，分析建设中心城市面临的社会问题，以期为我们提供经验与启迪。     

广州城市发展的资金来源与对策分析

广州被中央定位为五大国家中心城市之一，明确了广州的城市定位和发展方向。广州必须进行经济发展方式的转变和投资，以实现国家中心城市所具备的指标。因此，如何解决巨额投资资金来源急需探讨。本文分析广州融资体系的现状，提出广州需建立一个传统模式和资本市场新模式双结合的现代融资体系。     

Mathematical forms of the distribution of the product of two normal variables

This paper finds the mathematical forms of the distribution of the product where x and x follow a bivariate normal distribution In this paper the distribution when PT0 is expressed as an integral, a new, fundamental result. From this general form, six different cases can be distinguished depending on what is known about the parameters and p. The special cases are Aroian $year:1959 and (6) Additionally, we prove that if and as the distribution of the product approaches the Type III distribution. When p=0# Aroian $year:1959 and Aroian and Meeker $year:1977, give tables for various values of 6., 6 . The results in this paper will be used to provide brief tables for p^O in a separate paper     

A process capability index with reliable confidence intervals

A well-know process capability index is slightly modified in this article to provide a new measure of process capability which takes account of the process location and variability, and for which point estimator and confidence intervals do exist that are insensitive to departures from the assumption of normal variability. Two examples of applications based on real data are presented.