The study of social and economic system needs the support of forecasting theory . we can create the quantitaitive model , which reflects the law of system development , through the analysis of historical data , so that we can supply the powerful tool to analyze system characters and developing trend 社会经济系统的研究离不开预测理论的支持,通过对历史数据的分析,建立反映系统发展规律的定量模型,为分析系统的特征、发展趋势提供强有力的分析工具。
Supported by the gis technology , the research field of the mineral resources assessment and metallogenic prognosis is tending to develop expert systems of mineral deposit model by dealing with the temporal and spatial distribution of mineral resources and building quantitative models of multiple metallogenic information 以gis为主要支撑技术，分析矿产资源的空间分布，研究多元成矿信息定量模型，发展矿床模型专家系统成为矿产资源评价及预测的基本趋势。
However , as far as predict capacity is concerned , both of them show some weakness , and we need to establish a predict approach of listed company ’ s financial crisis , which not only depending on quantity model , but also depending on quality analysis as a supplement , for promoting the prediction accuracy 比较两个模型的预测结果发现,多元判别分析和logistic回归模型的判别效果接近,但均不够理想,需要建立以定量模型为主、定性分析为辅的上市公司财务危机预测方式,以提高预测的准确性。
Since traditional inventory being faced with immense impact , under the condition of supply chain , being acquainted with the complicated inventory system in regard to its components and its innate relationships , adjusting inventory strategies , and establishing an inventory model with fixed quantity are crucial . these issues are what the paper is intended to explore , too 本文研究了在供应链条件下，当企业传统库存面临巨大冲击和影响的严峻形势时，如何正确认识复杂库存系统的组成要素及其相互关系，如何调整库存策略，以及建立什么样的库存定量模型才能满足供应链管理对库存决策提出的新要求。
This dissertation is devoted to some quantitative models , algorithms and applications for regional medium - and long - term development planning . the quantitative methods concern with input - output analysis , artificial neural network and systems optimization methods . the main work of the paper can be summarized as follows : 1 围绕地区经济预测和中长期发展规划中的若干定量模型、算法以及应用等方面(其中定量方法主要包括投入产出分析、人工神经网络和系统优化方法) ，本文进行了一些研究和讨论。
When discussing the methods of goodwi11 evaluation , we point out the disadvantages of the present eva i uat i on formu i a se i ect i on and the parameter confirmation , import and deepen the theory of corporate life cycle to the work of enterprise income forecast , furthermore put forward a new model of excessive capitalized earning method on goodwill evaluation , and i i luminate the main points in the appl ication of the new model 在探讨商誉评估方法时，本文针对现有评估方法公式选择与参数确定方面的不足，引入并深化企业生命周期理论，将其应用于企业收益预测，进而提出了一种商誉评估超额收益现值法新的定量模型，并对新模型应用中的要点予以说明。
Taken the fraudulent accounting information of china ’ s listed companies as the object , this paper applies the quantificational research of identifying fraud to china ’ s securities business . according to the audit opinion of annual financial reporting of listed companies , we identify two kinds of empirical samples and choose twenty eight financial indices . making use of multivariate discriminant analysis and artificial neural network based on l - m algorithm , we build up three models of identifying fraudulent accounting information of listed companies in china 本文将国外会计信息失真识别的定量研究应用于中国,以中国上市公司的会计信息失真为研究对象,根据上市公司年报的审计意见构建实证样本,选取反映企业经营情况的28个指标,运用多元判别分析方法和基于l - m算法的bp神经网络,建立了三个我国上市公司会计信息失真识别的定量模型。
In the analysis measure , this text draws the theories and methods of many courses , in particular " game theory " , explaining the complicacy ' s economic phenomenon with the simple mathematics models , paying attention to the theory linking with practicality , it can say , this text is a sort of experiment about " district industry competition " research . owing to the length ' s limit , the text is n ' t complete ; many places are awaited more studying 在分析方法方面，本文借鉴了多学科的理论和方法，特别是博弈论的方法，并以简单的定量模型来解释较为复杂的经济现象，且注重理论与实际的结合，可以说，本文是对“区域产业竞争”分析的一种尝试，由于篇幅所限，本文的分析还不全面，有很多地方有待进一步研究。
In the more than 10 years development process of china ’ s telecommunications market reform , with the government policy guidance and support , the entire telecommunications industry rapidly developed , he scale of users rapidly expanded , the most advanced communication technologies was used , fee levels continued to decline , and the quality of services were significantly enhanced . domestic telecommunications market has experienced a series of reform measures , including inducing competition , dividing the corporate from the government , and restructuring corporate , and has scored brilliant achievements and made tremendous contributions in the development of the national economy 本文以有效竞争理论、规制理论为理论基础,从我国电信改革客观实际出发,对国内电信市场竞争模式的转变过程进行了分析,并与国外竞争模式转变情况进行比较,分析了竞争模式转变过程中的产权改革问题,建立定量模型对竞争模式转变过程中资源配置效率进行了系统的研究,提出了我国电信市场竞争模式选择的系列建议。
In this thesis , the qualitative - model - based fault diagnosis methods for a liquid - propellant rocket engine ( lre ) are studied in order to provide ones with novel approaches to build the fault diagnosis system , which possesses good robustness , real - time operating ability and practicability . the qualitative - model - based fault diagnosis methods hopefully substitute for quantitative - model - based methods for their limitations of computational complexity , robustness and practicability , and for the traditional rule - based method for its limitations of the acquisition of knowledge and flexibility 本文主要研究液体火箭发动机基于定性模型的故障诊断方法，其目的是为建立具有良好鲁棒性、实时性和实用性的发动机诊断系统提供一条新的技术途径，以期克服定量模型方法计算复杂、鲁棒性差、不便应用的缺陷，克服传统的基于规则方法知识获取困难和灵活性差的缺点。
