浅析上市公司会计信息披露存在的问题和管制措施

分析了上市公司会计信息披露中存在的会计信息失真的问题。针对会计信息披露中存在的问题 ,提出了完善会计信息质量监督体系 ,强化内部监督 ,完善配股考核标准等具体管制措施     

Limit Cycle Containing Nine Critical Points in its Interior for a Class of Cubic Systems

Ｉｎｔｈｅｑｕａｌｉｔａｔｉｖｅｔｈｅｏｒｙｏｆｒｅａｌｐｌａｎａｒｄｉｆｆｅｒｅｎｔｉａｌａｕｔｏｎｏｍｏｕｓｓｙｓｔｅｍｓ,ｅｘａｍｐｌｅｓａｎｄｒｅｓｅａｃｈｒｅｓｕｌｔｓａｂｏｕｔｌｉｍｉｔｃｙｃｌｅｓｕｒｒｏｕｎｄｉｎｇａｃｏｍｐｌｅｘｃｒｉｔｉｃａｌｐｏｉｎｔａｒｅｓｅｌｄｏｍｆｏｕｎｄ[1,2].Ｕｓｉｎｇｔｈｅｉｎｔｅｒｓｅｃｔｉｏｎｎｕｍｂｅｒｏｆａｌｇｅｂｒａｉｃｃｕｒｖｅ,Ｌｉｕ[3]ｄｅｎｏｔｅｓｔｈｅｍｕｌｔｉｐｌｉｃｉｔｙｏｆｃｏｍｐｌｅｘｃｒｉｔｉｃａｌｐｏｉｎｔａｎｄｐｒｏ…     

INVESTIGATION OF VORTEX SHEDDING INDUCED HYDRODYNAMIC VIBRATION IN VORTEX STREET FLOWMETER

0 INTRODUCTIONWhen a bluff body is placed in a flow stream,vortices form behind it and shed alternately from eachside. The shedding frequency keeps in a direct ratiowith the mean velocity over a wide range of Reynoldsnumbers.The idea of building a flow meter based on theassumption of a constant Strouhal number was firstproPOsed by Roshko, whose work indicated that theStrouhal number remains at an almost constant valueof 0.2 in the Reynolds number ranged 300 < Re <2 x l0s .For about thr…     

Calculation of Turbulent Boundary Layers Using the Dissipation Integral Method

INTRODUCTIONCalculation and prediction of turbulent boundarylayers (TBL) are among the most challenging tasksof present fluid mechanics. A strong demand existsfor robust, easy-to-handle and in terms of computingeffort cheap algorithms which can be used for technical applications. Most of the difficulties occur withthe comprehensive modelling of turbulence and, despite growing computer capabilities, with the limitedcomputing capacity. If the approaches to turbulenceare analysed, a sketch …     

A NEW ANALYZING APPROACH TO MODELING SLOTTED MULTIPLE ACCESS SYSTEMS

In this paper, the analyzing approaches proposed by Zhao Dongfeng, et al.(1997) have been extensively studied. The average cyclic times of the slotted multiple access systems are analyzed by using the average cycle method. Analytic formulae for mean values of a successful period and a colliding period and an idle period are derived. The upper bounds of the system throughput with capture effect and collision resolution are provided. Finally, the simulation results of the slotted multiple access channels are given.