建立和完善我国竞争政策体系的探讨

随着国际贸易自由化和国际投资自由化进展进一步加快,世界贸易组织管理协调的重点也逐渐由贸易政策转为国内立法和竞争政策.在经济全球化日益深化的今天,传统的贸易保护手段的有效性越来越低,战略性贸易政策发生作用的外部条件已经基本不存在.开放市场、减少壁垒、进行公平有效的竞争,在竞争中求生存、求发展,可能是一种现实的选择.因此,一些国家的经济学家越来越将外贸政策研究的重点从战略性贸易政策转向竞争政策.在我国加入世界贸易组织以后,建立和健全我国的竞争体系,显得尤为重要.本文讨论了国际竞争政策的内涵和新特点,分析了我国竞争政策的现状,探讨了建立健全我国竞争政策的重点和思路,并提出了在全球范围内协调竞争政策的途径.     

毫米波多模单脉冲喇叭馈源的分析与设计

对多模单脉冲喇叭馈源的理论和设计方法进行了研究。针对高次模的模比计算和控制难点,提供了一种准确的分析理论,给出了高次模的产生规律和模比的计算方法。在此基础上分析设计了一个毫米波多模单脉冲喇叭馈源并加工了实物,其实测结果表明,该馈源具有带宽宽（>5%）、驻波比小（<1.2）、和差矛盾小（<1.5 dB）、方位和俯仰面方向图对称性好的特点,与理论分析结果、仿真设计结果非常吻合,达到了预期的设计效果。     

Households transport-home energy conservation strategies in response to energy price policies: A stated adaptation experiment based on portfolio choices and cross effects designs

This article explores consumer investment choice in long-term energy conservation technology and assesses trade-offs in energy saving behaviour between the housing and transportation domains. The long-term energy conservation choice problem is conceptualized as a portfolio choice problem. Consequently, to measure trade-offs between investments in housing and transport options, a cross effects choice design is developed in which respondents were shown one or more alternate ways to reduce their current energy consumption: (1) investing in new technology in the house, such as solar panels; (2) exchanging the current car for a more energy efficient car; (3) buying a new energy-efficient car, such as EV or solar car; (4) moving house to reduce current travel distances. To help respondents linking these options to their current energy consumption, a new Web-based survey system (SINA) to implement and administer stated adaptation experiments was developed. The system was used to collect two sets of data. First, data about out-of-home and in-home energy consumption, together with detailed time use data, was collected. Second, using a cross effects design, respondents were asked to select a portfolio of energy-saving strategies in response to different energy pricing policy scenarios. Results reported in this paper are based on 572 respondents who completed the survey and responded to seven adaptation questions based on their current energy expenditures. A random parameters logit model is estimated to predict the probability of choosing a particular portfolio of energy-saving options. Estimation results indicate that individuals from different socio-demographic groups exhibit varied preferences. The saving option characteristics, especially cost related characteristics have significant effects on individuals' preferences. Moreover, the results also showed significant effects of choice set composition on energy saving options. Further, the energy pricing policies had showed mixed effects on individual's preferences.     

Assessing recreation carrying capacity of the environment attributes based on visitors’ willingness to pay

Recreation carrying capacity (RCC) is one of the most important indictors used in measuring the usage limits for the forest park resources. However, the consensus has not been reached with respect to the RCC’s content and its measuring metrics. In this paper, we attempt to establish a new RCC theoretical framework based on the demand theory of the tourism product characteristics. In the process, the choice experiment and orthogonal design methods are used in questionnaire designs and the conditional Logit model is used for parameter estimates. More than 700 park visitors are surveyed for data collection at the Shenyang National Forest park of Liaoning province in China. The primary park attributes being considered encompass vegetation, coverage, water quality, number of rubbish on the park trail path, admission fees, and congestion. The carrying capacity threshold for each specific attribute is identified.     

倒边盖挖逆作法基坑支护结构可靠性分析

为了解决采用标准Monte Carlo法计算复杂基坑工程上常见小概率失效,导致计算效率低的问题,以南京市湖南路地下商业街工程为工程背景,首先,将随机响应面法与基坑工程三维模型相结合,求解极限功能函数的响应面方程,并用标准Monte Carlo法计算失效概率和可靠指标,探讨采用倒边盖挖逆作法作为基坑支护结构施工方法的可行性;其次,基于该响应面方程,以土体的弹性模量为随机变量参数,采用马尔可夫链蒙特卡罗子集模拟法(MCMC子集模拟法)计算基坑支护结构的失效概率,并与标准Monte Carlo法结果进行对比分析。结果表明：当支护结构最大侧移控制指标为25 mm时,计算得到的可靠指标均大于4.6,即采用倒边盖挖逆作法施工过程中基坑是安全的;10万次和50万次标准Monte Carlo法计算得到的失效概率均为零,说明对于标准Monte Carlo法,在计算小概率失效问题时10万与50万的样本量是不足的;而MCMC子集模拟法用2.98万个样本计算出的结果与标准Monte Carlo法采用100万个样本计算的结果相对误差仅为1.7%,表明MCMC子集模拟法对于小概率失效问题求解的优势。所提算法在一定...     

最优政府支出结构与平衡增长

本文首先建立了一个包含政府支出的两部门内生增长模型,将政府支出划分为政府物质资本投资以及政府人力资本投资,对政府支出与经济增长关系进行了理论分析.结论是:在宏观税率、私人主体的时间偏好率和消费的跨期替代弹性给定的条件下,政府物质资本投资以及政府人力资本投资之间存在唯一的最优比例.通过比较静态分析发现,经济的宏观税率与平衡增长率之间存在对应关系.     

中国新型城镇化中的农民工市民化探析

从物回归到人是新型城镇化的价值所在。文章立足中国农民工市民化以人为本的价值追求,解析新型城镇化中农民工市民化的时代意蕴,分析农民工市民化的价值意义以及当前的现状和困境。文章认为,应从认识、主体、社会环境和制度四个层面推进农民工市民化进程,具体而言就是政府的管理理念要由物本观念向人本观念转变;尊重农民工的主体地位,维护农民工的权益,增强农民工主体意识;创造有利于农民工市民化的良好的、宽容的社会环境;深化户籍制度改革,为农民工创造与城市居民平等的生存发展条件。     

数字化资源整合战略管理的研究

在分析信息资源现状的基础上,以供应链为切入点,对信息资源的整合体系和数字化资源整合分别进行了系统性、战略性研究,为了便于实施,笔者提出了研制信息资源管理平台的实施方案以及标准化的相关内容.     

高校专利技术转化价值评估及其法律问题探析

针对高校专利技术转化现状,分析了高校专利技术转化价值的影响因素及评估中的相关法律问题,提出高校专利技术的真正价值内涵在于运用知识产权制度,将专利技术优势转化为经济效益和社会效益。为此,高校需强化专利技术转化价值的意识和评估观念,形成以专利技术的研发、保护、转化、运营为中心环节的知识产权管理体系。     

产权改革中的国有资产流失问题研究

文章分析了产权改革中国有资产流失的后果和原因,并对防范国有资产流失提出了综合性对策建议。