查询词典 prediction theory

This essay introduced the basic analysis method of Markovian prediction method and the Markov chain model is established to solve the common problems. The transition probability matrix is set up by using the theory of Markov chain.

本文从马尔可夫预测法的原理入手，通过剖析其方法的基本思想，推导出体现马尔可夫预测法基本思想的预测模型，着重介绍转移概率矩阵在经济领域的应用。

According to fuzzy random variable theory, calculated method of fuzzy random characteristic quantity of system risk grade is given, which can be used to prediction risk assessment of system.

根据模糊随机变量理论提出了系统危险等级模糊随机特征量的计算方法，它可用于系统危险性的预测评价。

Referring to the construct of the common experts system, the frame and function of our system was determined to extend the OPS83 ratiocinative method with converse ratiocinative method, and the ratiocinative mechanism based on target-driver controlling was realized. In accordance with the complexity, uncertainty and confusion of chip forming and chip-breaking process, We suppose imprecise ratiocinative mechanism on the basis of confusion mathematics theory, and found prediction system of the chip forming and chipbreaking for the first time.

研究确定了切屑形成与折断过程预报系统的结构框架，参照一般的专家系统构成原理，确定了本系统结构与功能；扩充了OPS83的推理方式，增加了逆向推理功能，实现了基于目标驱动控制的推理机制；针对切削过程中切屑形成与折断过程的复杂性、不确定性和模糊性，运用模糊数学理论，设计了不精确推理机制；首次建立了切屑形成与折断过程预报系统。

According to the prediction results of secondary structure of receptor β chain, the general theory about relationship between cytokine and its receptor at binding site and blocking results of polyclonal antiserum against D1 (9～114 residure of β chain), the new three peptides, which comprised residures of 45～75, 56～75 and 66～75, were designed and synthesized.

依据对受体β链二级结构的预测、受体与细胞因子结合部位的结构理论以及抗受体β链D1(9～114)片段多克隆抗血清有阻断GM-CSF促进DMSO诱导HL60细胞增殖活性的结果，设计和固相合成了受体β链第45～75，56～75和66～75三个人工合成多肽片段。

Based on analysis of the characteristics of equipment operation, and accordin g to the vibration intensity, a grey prediction model is established by use of g rey system theory.

分析了设备运行状态的特征，运用灰色系统理论对设备状态特征量——振动烈度，建立了灰色预测模型。

First, the traffic flow time series chaotic feature is extracted by chaos theory. pretreatment for traffic flow time series, and the wavelet neural networks model was build by this. Second, the chaotic mechanism and the chaotic probability is described. Based on chaotic learning algorithm, and the wavelet neural networks fast learning algorithm of traffic flow time series is designed based on chaotic algorithm. Last, a single-step and multi-step prediction of traffic flow chaotic time series is researched by BP neural networks, wavelet neural networks and wavelet neural networks based on chaotic algorithm. The results showed that the wavelet neural networks predictive performance is better than the BP networks and the wavelet neural networks by the simulation results and root-mean-square value.

首先，通过混沌理论提取了交通流量时间序列的混沌特征，并在此基础上建立了小波神经网络交通流量时间序列模型；接着，阐述了混沌学习算法的混沌机理、混沌产生的概率，设计了基于混沌算法的小波神经网络交通流量混沌时间序列快速学习算法；最后利用交通流量混沌时间序列对BP网络、非混沌算法的小波神经网络以及基于混沌算法的小波神经网络进行了单步预测和多步预测，并对预测结果的仿真图和真实值与预测值的方均根进行了比较，结果表明基于混沌学习算法的小波神经网络的预测性能明显优于应用BP网络和非混沌算法的小波神经网络。

The characterization of cassava absorbent was measured by SEM, the specific surface area of cassava absorbent was calculated based on BET two parameter theory and the absorption isotherm of cassava absorbent was analysed with Sircar model prediction model.

对木薯吸附剂进行了SEM表征，应用BET二参数理论计算木薯吸附剂的比表面积，对木薯吸附剂的吸附等温线进行Sircar模型预测和分析。

Shule River project area is located in northwest China\'s Gansu province,Hexi Corridor,which is the largest agricultural crop production base of Gansu province and typically arid and semi-arid areas. There are characteristics such as scarce rainfall,the temporal and spatial distribution inequality,strong evaporation,fragile ecological environment,the limited quantity of surface water. Agriculture,the people\'s living and ecological environment are significantly dependent on the groundwater. Based on the collection and processing of regional hydrological and geological data and the groundwater monitoring data,using the numerical simulation,geostatistics theory and multi-objective evolutionary algorithm,this paper studied the monitoring and evaluation of groundwater resources from the three aspects: groundwater numerical simulation and prediction,groundwater spatial variability and distribution and optimization modeling and sloving of groundwater monitoring network. The main work and research lies:(1) Using Yumen-Tashi basin,Anxi-Dunhuang basin and Huahai basin as study area,this paper used modflow model to simulate groundwater flow of three areas.

本文在收集和整理项目区水文地质数据以及地下水监测数据的基础上，基于数值模拟、地统计学理论及多目标进化算法，从地下水数值模拟与预测、地下水空间变异与分布特征分析以及地下水监测网优化建模与求解三个方面展开了对项目区地下水资源监测与评价的研究，主要研究工作如下：(1)以项目区内的玉门-踏实盆地、安西-敦煌盆地和花海盆地为研究区域，在《河西走廊项目中期计划调整报告》规划条件下，基于modflow模型对地下水水流进行数值模拟，计算并生成了三个区域2007-2030年地下水埋深预测数据以及等值图。

On the basis of the dark-box theory and the production data of Meishan sugar mill, Guangdong province, in the 1993/94 campaign, the mathematical models were established by computer for the prediction of product colour, including four input variables,where one for sugarcane quality index, three for the process indices.

基于黑箱系统理论，以广东梅山精厂1993／94年生产期的班报数据为计算依据，利用计算机建立有关产品包值预测的数学模型，选择了四个输入参数，其中一个代表甘蔗品质指标、三个代表工艺指标。

However, capital is managed still be in in our country start level, still exist on theory and practice a variety of errors:(1 ) go up in capital management guiding ideology, in thinking state-owned company assets recombines to trade with property right, appear " the pony pulls cart " the phenomenon can cause state-owned property prediction of a person's luck in a given year;(2) in process of executive capital dilate, corrupt big picture is fast, ignore the immanent quality that capital manages;(3) cut apart capital manages the immanent connection that manages with production, inspect capital to manage what manage at production for free more advanced management form;(4) manage capital regard as escape of debt useless debt " shortcut ", ignore capital structure optimize.

然而，资本经营在我国尚处于起步阶段，在理论与实践上还存在种种误区：（1）在资本经营指导思想上，认为国有企业资产重组与产权交易中出现的"小马拉大车"现象会导致国有资产流失；（2）在实施资本扩张过程中，贪大图快，忽视资本经营的内在质量；（3）割裂资本经营与生产经营的内在联系，视资本经营为游离于生产经营的更为高级的经营形式；（4）把资本经营当成逃债废债的"捷径"，忽视资本结构的优化。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。