THE ANALYSIS OF THE SEPARATED LAYERS ALGORITHM BY DOMAIN DECOMPOSITION METHOD

From the principle of of the Domain Decomposition Method (DDM), we analyse the 2nd-order linear elliptic partial differential problems and link the Separated-Layers Algorithm (SLA) with DDM. The mathematical properties of SLA and numerical example are presented to obtain satisfactory computation results. For general linear differential ones, also are the structure of SLA and its characteristics discussed.     

浅谈企业信用风险管理

社会主义经济是信用经济,没有信用,就没有秩序,市场经济就不能健康的发展。加强企业信用管理的风险控制是现代企业的一项重要任务。进入WTO标志着中国经济更加开放,国际贸易更加纷繁复杂,在机遇透人的同时,企业也潜伏着越来越大的风险,尤其是企业信用风险。因此强化企业的信用风险管理,建立与完善企业内部信用风险管理体制,仍然是企业面临的一项重要课题,笔者从多方面阐述了企业信用风险形成的原因以及如何建立风险管理机制等问题。     

产业集群创新的机制与政策建议

创新的集群化决定了产业集群创新的优势，但这并不意味着集群竞争优势的必然性，创新优势的实现在于特定需求对集群的创新的压力和动力，企业之间竞争与合作的推动，知识技能的扩散集聚效应和地方资源与制度环境的催化作用，政府应从宏观市场机制、产业集群环境以及产业集群的发展战略上促进产业集群创新优势的形成。     

财政分权与义务教育财政管理体制问题探析

我国是成功实施财政分权化的国家之一。作为公共财政框架部分之一的义务教育也实行了分权化管理,义务教育办学的责任主要地落在了县、乡两级地方政府身上。而我国庞大的义务教育事业由县、乡甚至村脆弱的财力来承担,可谓“杯水车薪”：一些农村地区和贫困山区学龄儿童无学可上,无书可读等现象屡见不鲜。可见过度分权化的义务教育财政管理体制是制约当今中国义务教育发展的症结所在。     

Var模型与我国的金融风险管理

Var模型作为金融风险量化管理的有效方法，在国际金融界得到了广泛的认同和应用。本文介绍了Var模型的基本思想及Var值估算的三种具体方法，并对Var模型在中国金融风险管理中的应用前景进行了分析和展望。     

当前高校大学生考试作弊原因浅析及对策

高校学生考试作弊现象时有发生。其原因包括自我要求降低，教考制度、学生管理等方面存在问题。要改善这种现状，必须促使学生端正学习态度，通过教育改革提高学生学习热情，加强校风校纪建设，完善考试制度，最终杜绝高校学生考试作弊现象。     

China''''s Cooperative Exploration of Oil and Gas and Its Taxation System

China' s foreign-oriented oil taxation system has, from the beginning, been based upon the positive experiences of other oil-producing countries and has incorporated common international practices. The system has been perfected over decades. It of fers more incentives than other oil-producing countries in the following four aspects: (1) Income tax has a "wide tax base and low tax rate"; (2) VAT levies a low tax rate on ma-     

A TVD SCHEME FOR INCOMPRESSIBLE FLOW COUPLED WITH DIFFERENT TURBULENCE MODLES ON A GROUND- MOUNTED SQUARE-RIB FLOW

A finite-difference Total Variation Diminishing (TVD) numerical simulation model for coupling the Reynolds Averaged Navier-Stokes (RANS) equations, pressure-relative continuity equation and various k-εturbulence models was developed to solve the incompressible flow based on the pseudo-compressibility method. The hyperbolicity of all these equations was studied and the discretization of the fully coupling equations with all the primal variables and source terms were made in this article. Numerical simulation for modeling the flow around a ground-mounted square rib was implemented and validated by comparing with the published wind tunnel experimental data. It is shown that such a numerical simulation method with a proper turbulence model has a very good accuracy to simulate the flow around a surface-mounted rib. It is concluded that the Renormalization Group (RNG) and Chen-Kim k-εturbulence models have much better ability to predict the characteristics of the vortex structure and flow separation than the standard k-εmodel.