Because the reduced - form models can represent the unexpected default more precisely and be consistent with empirical researches more accurately than tructural models , the credit risk pricing models of this dissertation belong to reduced - form models 由于简化形式模型比结构化模型更能表达出违约的突然性并且更加符合实证研究结果,所以本文研究的信用风险定价模型属于简化形式模型。
On account of the disadvantages of the feedback reactive power compensator , a device of its simplified scheme is studied in this paper , in which the reactive power is adjusted by regulating the voltage of the low - voltage side of the transformer 由于这种反馈式补偿方案存在一些问题，本文分析了它的简化形式，即通过调节降压变压器低压侧的母线电压来调节滤波器的无功出力的补偿方案。
Firstly on the basis of summarizing the research results , this paper deeply discusses the calculating model to analyze the instantaneous motion state in the vehicle collision , the interrelation among the every moving mechanics parameters in the every phase of the collision 本文首先在总结前人研究的基础上，分析了车对车碰撞作用瞬间状态的计算模型及碰撞恢复系数与碰撞前、后速度的关系，介绍了gim轮胎理论模型的简化形式，建立了碰撞后车辆动力学模型。
This paper makes an extension to the model of strand space in theorem . whereas the hash function in key agreement protocol , using the honest function , we expansion the capacity of the eavesdropper and the correlative theories in strand space . given the strand space of wtls from the simplified model in 4 . 2 . 2 , combining the concept of ideal and honest function , we analysed the security and authentication of wtls , and pointed out a limitation of the mend of paulson ’ s weaker theorem about tls ’ s main secret 本文首先从理论上对串空间模型进行了扩展,针对密钥协商协议中的单向hash函数,利用诚实函数的概念,扩充了攻击者能力,同时也扩展了串空间中的相关定理;在对wtls协议进行安全分析时,首先给出了协议的一个简化形式,得到了wtls串空间,并结合理想和诚实函数的概念,分析了wtls协议的秘密性和认证性,指出了paulson关于tls主秘密的弱理论改进的缺陷。
