通信网络系统通话质量的模糊综合评判

本文利用模糊数学理论对通信网络系统中的通话质量进行了模糊综合评判，从而实现了对通话质量的综合评价由定性分析到定量分析的飞跃．文中首先对通话质量的好坏程度进行定量分级，然后分别对影响通话质量的各个因素建立模糊隶属函数，再根据通信系统质量指标的标准（由国际电报电话咨询委员会（ＣＣＩＴＴ）制定）和专家们的经验对各个因素所起的作用确定权，据此就可以对通信网络系统的通话质量进行综合定量评价，且与实际情况是相吻合的．     

NEURAL NETWORK MODELS FOR DESIGN OF BLOCK CIPHER SYSTEM

1.Introduction.Weallknowthattheneuralnetworkmodelandtheciphersystemarebothimportantinthefieldofinformationprocessing.Thispaperwilltellyouhowtoestablishakindofrelationshipbetweenthem.ThetraditionalHopfieldNeuralNetworkisadynamicsystemwithNconnectedneurons,andthestateofeachneuroniseither lor--1.Letyi(t)bethestateoftheithneuronattimet.Thenthestateofthewholenetworkcanbedenotedasavectorv(t)=(yi(t),yi(t),''IVN(t)).Atthenexttime,thestateoftheithneuroniscomputedbywheresgn(u)~--1whenu<0andsgn(u)~1…     

MODELING AND ANALYSIS OF ENERGY SYSTEM BASED ON COMPLEX ADAPTIVE SYSTEM

Complex adaptive system (CAS) is a kind of complex system in natural and artificial systems. In this paper, the theory of complex adaptive system is introduced at first. Considering the characteristic of energy system, it can be regarded as a complex adaptive system. After the evolutionary law is analysed, the energy complex system model is established based on CAS and application tool SWARM, which is a simulation software platform. The model differs from the models as well as methods developed before. As an application, China's energy system is simulated with the model established above. China's future total energy demand in the future, energy structure and related in fluence on environment are presented.