正则投资项目内部收益率的快速确定  

Quick Determination of Internal Rate of Return of the Canonical Investment Projects

作　　者：陆宁[1] 李萍[2] 陆路[2] 解燕平[3] 赵磊[3] 

机构地区：[1]长安大学建筑工程学院,陕西西安710061 [2]长安大学建筑学院,陕西西安710061 [3]长安大学经济与管理学院,陕西西安710064

出　　处：《技术与创新管理》2010年第6期704-706,713,共4页Technology and Innovation Management

基　　金：陕西省自然科学基础研究计划资助项目(编号:2005E211)

摘　　要：在计算投资项目的内部收益率时,试算初值的确定十分重要,它直接影响到求解的速率,通常在实际中对试算初值的确定具有极大的盲目性。针对绝大部分投资项目系正则投资项目,证明了正则投资项目存在唯一正实根的内部收益率,得出了存在唯一正实根的内部收益率前提条件,提出了确定项目内部收益率的初步下限和下限的方法,进而得出初始试算值,依据初始试算值便可快速地计算出正则投资项目的内部收益率,并通过示例验证了这种方法的可行性和实用性。The determination of initial trial value plays an important role in the process of calculating internal rate of return since it directly affects the calculating speed.Usually,it is very blind when the initial trial value is determined.It is proved that canonical investment projects have sole positive real root because most investment projects are canonical investment projects.The precondition of the existing of sole positive real root is obtained and so does the way of determination of upper limit and lower limit of internal rate of return of projects and then the determination of the initial trial value.Based on the initial trial value,the internal rate of return of canonical investment projects can be got quickly,which proves that this method is feasible and practical.

关 键 词：正则投资项目 内部收益率 快速确定 初步下限 下限 初始试算值 

分 类 号：F224.12[经济管理—国民经济]