强化风险意识 确保国资安全

企业财务风险是指企业在各项财务活动过程中,因种种难以预料或无法控制的因素给财务状况造成的不确定性,进而使财务遭受损失的可能性,是我国国民经济面临的较为重要的一种风险。

区域水灾风险评估模型研究的理论与实践

首先立足于风险研究这个大背景下，在理论上对风险的概念进行了比较分析。然后针对水灾的风险， 根据其研究与实践中的侧重点不同，分为“损失可能性”学派、“未来损失”学派以及“损失不确定性”三 个学派。在此基础上，分析了水灾风险的不确定性，从而提出了基于概率论和可能性理论的水灾风险定义， 并将此定义应用于区域水灾风险评估的模型中。最后，探讨了水灾风险评估研究的问题与对其未来的展望。

审计风险计量研究

经过一百多年的发展,"审计方法从账项基础审计、制度审计到风险导向审计,"使注册会计师领域中的审计风险倍受关注。但现行的审计风险计量方法无法准确计量审计风险,因而不能正确地认识审计风险。本文以风险理论为基础,设计审计风险的计量模型,确定可接受审计风险的区间,划分审计风险的级别,以期以数量方法认识审计风险。

台风暴雨期间渔业生产管理措施

每年夏天,我国自南到北的大部分地区都会连降暴雨和特大暴雨,发生严重的洪涝灾害,给人民群众的生命财产安全带来严重危害。同时,夏天也是我国沿海台风到来季节,台风暴雨相互叠加,危害程度就会更大。水产养殖业由于大多靠近沿江和沿海,通常首当其冲,造成重大经济损失的可能性很大。这种灾害对水产养殖的影响主要表现为养殖设施受损,水域水位猛涨,水中鱼.

Dimensional Analysis on Resistance Characteristics of Labyrinth Seals

Experimental investigation of stepped and straight-through labyrinth seals was designed to study the sealing performance of two different typical labyrinth seals.In order to facilitate dimensional analysis on the flow resistance characteristics of labyrinth seals,the variable cross-section of the flow channels are considered as constant cross-section flow.The mechanical energy loss of flow caused by throttle turbulence intensity is considered as caused by friction along the way.The friction coefficient of stepped labyrinth seals is bigger than that of straight-through labyrinth seals by more than 40% for the same Reynolds number and the ratio of equivalent diameter and the seal length.The expression of friction coefficient /and /Re are obtained from experimental data.The verifications indicate that the expressions are highly accurate.The contribution to the total pressure drop of each tooth cavity gradually becomes less along the flow direction.