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- population forecast method 人口预测方法
- When some main fac tors change, there is uncertainty in economic forecast if the forecast method is used as usual. 经济预测中发生主要影响因素改变时 ;若采用通常的预测方法会因历史数据过少而出现较大误差 .
- In the end of this paper, we base on existing population forecast, after predigest equilibrium model, calculator intending change of rate of payments in our country. 最后根据现有的人口预测结果，在对上文建立的均衡模型做出一定的简化后，测算我国未来长期内的缴费率变化。
- Short-time forecast method of formation condition and moveme nt of convective storm cell was discussed. 对对流风暴单体的形成条件和移动的短时预报方法进行了探讨。
- Study of population size hierarchy is the groundwork of the city planning.It is important to the population forecast of cities and urban system planning. 摘要城市规模分布研究是城市规划中的一项基础性研究工作，对准确预测城市人口规模以及合理确定城镇体系结构具有非常重要的意义。
- The practice shows that the laws and forecast method can be instructive and profitable to the mine production. 实践证明该规律及预测方法能有效地指导生产,取得了一定的经济效益。
- Delphi method is a kind of dependable and visual forecast method with anonymity and feedback. 德尔菲方法是一种可靠的、直观的预测方法，具有匿名性、反馈性等特点。
- Cohort-component method is widely used in actual population forecasts, which is base on population component and demology principle. 在现实的人口预测中，根据人口本身变动要素和人口学原理的队列要素法应用比较广泛，效果良好。
- A scientific forecast method, the Delphi Method was created by Research and Development Corporation (RAND) in 1964 and has been widely used. 德尔菲法是美国兰德公司于1964年创造的一种科学预测法,目前已成为一种广为使用的预测方法。
- The forecast method of asphaltum concrete pavement performance is studied.The efficiency of the calculation method is proved through illustration. 研究了基于神经网络的沥青混凝土路面使用性能预测模型的分析和计算方法，通过实例验证了该方法的实用性。
- The prediction theory and forecast method of tunnel water gushing in karst areas have long been a difficult hydrogeological problem. 摘要岩溶地区隧道地下水涌水预测方法和理论是长期以来难以突破的水文地质难题。
- Traditional load forecast method had many deficiencies, such as poor precision and crudeness and incapability for non-linear relations. 传统的负荷预测方法往往具有预测精度不高、鲁莽性差、不能表述复杂的非线性关系等缺点。
- In accordance with field investigation to epidemic dynamics of wheat scab,the forecast method for differential equations of epidemic state has been given respectively. 根据不同的状态微分方程，以极大值原理建立小麦赤霉病流行动态的控制论模型，得到流行动态的最优控制轨线。
- As an important aspect of demology, population forecasts is significantly effect on society and economy. 人口预测作为人口学研究的一个重要方向，已在社会、经济发展过程中显示出日益重要的作用。
- A Study on BP Neural Network of Population Forecast 基于BP神经网络的人口预测模型研究
- For land planning purposes,the Government has devised a housing demand model which responds to changes in government policies and population forecasts. 政府采用的房屋需求预测模式，可因应政府政策的转变和最新的人口推算数字作出调整，以便进行土地规划。
- Methods: The tendency straightline forecast method &the tendency season-mould forecast method. 方法：用趋势直线预测法和趋势季节模型预测法。
- Specifically, a sample is given to illu strate the proposed forecasting method. 最后给出一个例子对此予以说明。
- Based on analyzing several current models of population forecasting,this paper promotes an improved optimal combinative model. 在分析各种人口预测模型的基础上，提出了一种改进的最优组合模型。
- Methods: The tendency straightline forecast method &the tendency season mould forecast method. 方法:用趋势直线预测法和趋势季节模型预测法。
