黄金冶炼设备的润滑问题及解决措施

分析黄金冶炼设备维护和保养中的润滑问题,产生设备润滑问题的诸原因,给出解决设备润滑问题的主要方法。     

上市公司自愿性信息披露对提升公司价值的影响——基于我国证券市场的进一步验证

对于上市公司自愿性信息披露能否影响公司的价值,论文将采用托宾Q（Tobin＇sQ）作为衡量公司价值的指标,揭示中国上市公司自愿性战略信息披露、自愿性非财务信息披露、自愿性财务信息披露与公司价值的关系,本文将构建模型,并采集2005年度的数据进行进一步实证分析,结果表明：自愿性非财务信息披露水平对提升公司价值有显著的作用,竞争程度高的上市公司的自愿性信息披露对公司价值的影响更为显著。     

动物福利壁垒及其对国际贸易的影响

近年来,动物福利壁垒作为一种新的贸易壁垒开始出现,并已对动物源性产品的国际贸易产生了现实的影响。本文分析了动物福利壁垒的主要特征、动物福利壁垒的主要应用措施,并探讨了动物福利壁垒对国际贸易的影响。     

我国沿海大城市的发育机制与成长因素

一、全球经济一体化与大城市发展的关系大城市的空间扩展成长机制与全球化密切相关,全球化可以被定义为资本、生产、服务、思想和文化等在世界性大城市的相互联结,特点是这些要素大量和高速地流动[1],促进了城市规模     

Testing for multivariate volatility functions using minimum volume sets and inverse regression

We propose two new types of nonparametric tests for investigating multivariate regression functions. The tests are based on cumulative sums coupled with either minimum volume sets or inverse regression ideas; involving no multivariate nonparametric regression estimation. The methods proposed facilitate the investigation for different features such as if a multivariate regression function is (i) constant, (ii) of a bathtub shape, and (iii) in a given parametric form. The inference based on those tests may be further enhanced through associated diagnostic plots. Although the potential use of those ideas is much wider, we focus on the inference for multivariate volatility functions in this paper, i.e. we test for (i) heteroscedasticity, (ii) the so-called ‘smiling effect’, and (iii) some parametric volatility models. The asymptotic behavior of the proposed tests is investigated, and practical feasibility is shown via simulation studies. We further illustrate our methods with real financial data.     

A Multi-Objective and Multi-Design Evaluation Procedure for Environmental Protection Forestry

A unique and important application of a comprehensive and practical multi-objective evaluation framework is presented which goes far beyond traditional cost-benefit analysis (CBA). It is characterized by transparency which is not always the case for methods beyond CBA. The application is geared to the evaluation of environmental protection forestry with several alternative designs. The framework suggested consists of five key steps integrating orthodox cost-benefit analysis and the analytical hierarchy process developed by Saaty (1980). It is shown to be a flexible framework which can coherently function with a mixture of both monetary and physical units of measurement. The framework is applied to a consideration of alternative designs for the Three Norths Shelter Belt (TNSB) in China.     

电信营业厅双节促销期间现场管理

<正>促销,顾名思义就是促进销售,但是目的绝不仅仅是为了拉动销售量,更重要的是要使品牌的美誉度得到提升,让客户能感受到企业对客户的重视和关怀,从而进一步扩大品牌忠诚度,实现品牌的持续长久发展。对于价格     

人民币名义有效汇率与经常账户失衡的实证研究：1982-2007

以1982-2007年中国经常账户余额、人民币名义有效汇率、GDP的增长率构建VAR模型,长期存在协整且具统计上的显著性,升值和经济增长带来经常账户余额增长.速度调整系数显著为负,符合反向修正机制允许短期波动.脉冲响应显示本币升值经常账户余额先升后降,经常账户的波动主要(70%)来自经济增长.     

突变论在桥梁方案比选应用中的进一步研究

桥梁方案的比选过程中包含很多要素，既包括具有确定性、可以定量表示的客观要素；同时也包括一些具有不确定性、难以给出定量表示的主观要素。如果把两者合理科学的统一起来，就需要应用到数学方法。文中通过对突变优选理论的研究，在突变级数法的研发基础上，更进一步提出因子分析方法的理论方法研究，为突变优选理论在桥梁方案比选中的应用提出更进一步的探讨。