Nonlinear feedback control is used to control chaos in pmsm . the objective of this method is more suitable for the real application , and this method is robust against model error and measurement noise . simulation results show the effecti 这些研究大部分针对实际工程对象，讨论了初始条件的限制，模型误差和噪声的影响，控制目标的要求，控制的鲁棒性，不确定模型的处理等问题。
A new quantified model of evaluating the economic risk of real estate project has been proposed in this paper and the weight of each risk factor influencing the outcome of real estate project in the model has been objectively calculated by using ahp 摘要提出了一新的房地产项目定量经济风险评价模型，并且将ahp方法应用于房地产项目经济风险分析，客观地确定模型中各风险因素的权重。
This article selects the stress computation model fit for anpeng field in accordance with the geologic feature and available well log and testing data , and then presents the method for computing each parameter required by the model using the imaging logging data 根据安棚油田地质特征和收集到的测井及测试资料，优选出合适的地应力计算模型，在此基础上，给出了用成像测井资料确定模型中各参数的方法，进而计算地应力。
Firstly , several methods are used to test if there is heteroscedasticity in the data . then some variance stabilizing transformation methods are applied to the data . finally , it is pointed out that the least squares fitting may be used to the transformed data 先用几种方法对数据是否具有异方差性进行检验，然后选择适当的方法进行变换，最后指出，可以通过对新模型作最小二乘拟合等方法，观察变换后的模型其数据的拟合程度，以确定模型的优劣。
Considering the compactness characteristics of dissolved gas analysis data , the achieved samples are pre - selected with the fuzzy c - means clustering method to solve the problem of long time consuming in parameter determination , thus a certain model extension ability is enhanced 考虑到变压器油中溶解气体特征空间的紧致性原理，利用模糊c均值聚类算法对所获取的样本进行预选取，有效地解决了确定模型参数时耗时巨大的问题，并一定程度提高了模型的推广能力。
3 . according to the principle of the finite element method , the research establishes finite element models of the vibration transportation mechanisms , some model parameters such as the frequency and vibration type are confirmed and validated by the modal analysis , then which analyzes dynamic - state response of the model and confirms the swing distributing of the models , thereby make the design of models precise . 4 根据有限元法的理论，建立振动机构的有限元力学模型，对该力学模型进行模态分析，通过模态分析确定抛秧机振动形态和所需的频率等参数；然后此基础上再进行力学模型的稳态响应分析，研究该模态下机构的振幅分布，以确定模型设计的准确性。
The paper introduces the theory of health of urban ecosystem into the study of ecourban in connection of national ecourban building which is now in the ascendant , builds a health evaluation model of urban compound ecosystem according to related studies , using as the standard for judging the level of ecourban building ; decides the multi - index weight of the model by using the method of entropy right , avoiding a subjective judgment which might be caused by the method of subjective evaluation and ; applies the model into living examples of ecourban planning of nanyang city , describes the development level of each sub - system of nanyang city and other cities of henan province , the coordination level among each sub - system and the overall health statement of compound ecosystem in a quantitative way , providing scientific decision - making basis for ecourban building of nanyang city 摘要针对当前全国方兴未艾的生态城市建设，将城市生态系统健康理念引入生态城市研究当中，根据相关研究构建了城市复合生态系统健康评价模型，作为评判生态城市建设程度的标准；利用熵权法确定模型中的多指标权重，避免了采用主观赋值法可能带来的臆断性；将评价模型应用于南阳市生态城市规划实例中，以定量的方式描述了南阳市以及河南省其他城市各子系统的发展水平、子系统间的协调程度以及复合生态系统的整体健康状况，为南阳市生态城市建设提供了科学的决策依据。
The meaning of brand has been opened out which is consisted of brand power value and costumers value . evaluation model has been advanced through analyzing models in and out . using the ahp , the weights of main parameters have been established 本文从企业和消费者两个方面揭示企业晶牌价值的内涵，通过品牌价值的比较研究，认为企业品牌价值由品牌权力价值和消费者价值两部分组成，并在借鉴国内外品牌评价方法的基础上提出企业品牌评价模型，运用层次分析的方法确定模型中参数的权重，同时对参数的量化进行了研究。
First , using a kind of realization of yangian of a two angular momentum coupling system , we can work out the quantum states of the h = - s model , a two - lattice physics system whose orbital angular momentum and spin coupled in a special way . then , we select that situation that a orbital angular momentum of any value coupled with another of the value of 1 / 2 as an example , discuss the degenerate states of the model 首先，通过二角动量耦合状况下的yangian实现来确定模型(一个轨道角动量和自旋角动量以一种特定方式耦合的两格点物理体系)的量子态，以任意的轨道角动量与1 2的角动量耦合为例，来讨论具体到某一量子态下该体系的简并问题。
For this , based on analyzing formalized design method , principles and architecture for designing formal model are proposed , then according to them , the model is designed hierarchically . first , a formal framework for supporting multipolicy is presented . second , some component models are constructed , including dynamically mediated security level rang multilevel security model dmlr - mls , which is used to implement confidentiality policy , and renamed as dblp model after it is combined with dac model , based - dte integrity protection security model dte - ipm , and privilege control model pcm - rbpc based on capability mechanism , role mechanism and dte privilege mechanism 本文主要研究开发高安全等级的操作系统所必需的安全策略形式模型，为此我们从形式设计方法的探讨入手，确定模型设计的基本原则及组织结构，然后根据确定的组织结构逐步展开设计，提出支持多策略的形式框架、实现机密性策略的可动态调节安全级范围的多级安全模型dmlr _ mls (本文把它与dac模型合在一起形成dblp模型) 、基于dte技术实现完整性保护的形式模型dte _ ipm及基于权能、角色及dte的特权控制模型pcm _ rbpc 。
