查询词典 forecasting

Chapter 5 introduces the forecasting effect of the long term runoff forecasting model.

第四章具体介绍了预测模型的数据库设计与实现。

Grey systems theory and method were used here, the article simulated shelf-life entironment at constant temperature 20℃, and constant humidity 90%, texture profile analysis(TPA tests in sarcocarp and core, were carried out and the texture parameters studied chewiness is found to be the diagnostic gene of shelf-life property changes, with grey model GM(1,1) and grey forecasting model based on chewiness were thus established. The veracity and applicabilidy of the grey forecasting model of carrot core were c...

本研究应用灰色系统理论及其方法，模拟货架期环境(恒温20℃、恒湿90%)，做了胡萝卜贮藏的果肉和果心的TPA测试，进行了质地特性参数的分析研究，得出咀嚼性是胡萝卜货架期品质变化的"特征因子"，并建立了基于咀嚼性的一阶灰色模型GM(1，1)和灰色预测模型，还通过论证与检验，确定了胡萝卜果心的灰色预测模型的准确性与可用性，从而为果蔬贮藏及货架期研究提供一个重要的认识工具。

Experiments with sunspot activity data show that the method is better than traditional forecasting approaches and neural network approaches,and can be applied to forecasting of some no...

对年平均太阳黑子数的预测结果表明，该方法比传统的时间序列预测方法和神经网络预测方法的预测精度高，可以很好地应用于某些非平稳时间序列的预测中

In this paper one combined load forecasting method based on fuzzy synthetic evaluation is advanced, in which the experience of the forecasters and the uncertainness of load forecasting are considered adequately.

针对电力系统负荷预测受很多不确定因素的影响，在本文中把模糊综合评判应用到组合负荷预测中，这种组合预测方法充分考虑了预测人员的预测经验和负荷预测的不确定性。

At present,although forecasting research on overall competitiveness of provincial economy is a virgin soil,it has showed the new development aera to economic forecasting research in China.

省域经济综合竞争力是推动区域经济和现代市场发展的重要要素，同所有经济要素一样，既可以进行测度评价，也可以进行预测分析。

Firstly, soil aspect, the non- balanced time series model for forecasting soil aquiferous capacity is built up by stochastic theory, and the BP network model is set up by MATLAB artificial neural network tool, the forecasting result is very good.

第一，关于土壤方面，利用随机理论建立了预测土壤含水量的非平稳时序模型，同时运用MATLAB人工神经网络工具箱建立了土壤含水量预测的BP网络模型，取得了较为满意的效果。

Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows:①reviewed entirely the origin and evolvement of the concept "sustainable development", stated and commented the study status in queue on"sustainable development"around national and international range, thorough discussed the science connotation about the concept "sustainable development";②looked back and commented across-the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings;③expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory;④thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the MATLAB software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the B-J method and Morte-Carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources;⑤synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming, mathematical statistics, random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality;⑥analyzed the inside condition and outside condition to assure the sustainable and optimum exploitation of groundwater resources, the inside conditions are the follows: correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows: the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water-saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology;⑦scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy;⑧point out the more directions on groundwater resources.

它将为制定水资源的可持续发展目标和战略决策提供科学依据，为制定社会、经济可持续发展战略提供理论基础。基于以上考虑，论文主要从以下几方面对地下水资源可持续开发问题进行了比较深入的探讨：①全面回顾了&可持续发展&概念的由来与演变，对国内外&可持续发展&的研究现状进行了述评，并对&可持续发展&概念的科学内涵进行了深入探讨；②对涉及地下水资源的一些最基本的概念和命题进行了全面的回顾和评述，对目前仍然存在的一些错误观点和混乱认识提出了自己的见解；③全面阐述了地下水资源变值系统理论的内容和意义，并与传统的地下水资源计算评价方法进行了对比分析，结合实例具体说明了方法的应用；④深入分析了地下水资源预测预报工作的极端重要性和复杂性，对传统的地下水资源动态预测方法进行了全面的评述，指出了各类预测预报方法的特点及适用条件，对最近二十多年刚发展起来的小波分析技术的主要思想和方法及其应用范围，以及号称第五代计算机语言的MATLAB软件和附带的小波分析工具箱进行了介绍，并应用于地下水动态过程线的分析，采用时间序列中的B-J法，蒙特卡罗方法，与地下水资源变值系统理论相结合，探讨了地下水动态资料分析和地下水资源预测预报的新思路；⑤综合分析了现今各类地下水管理模型的特点及缺陷，将数学规划、数理统计、随机过程等与地下水变值系统理论相结合进行地表水地下水或多水源的联合优化调度，使模型更准确、更实用；⑥对保证地下水资源可持续开发的内部条件和外部条件进行了分析，内部条件主要是正确的资源观，科学的资源计算与评价方法，可靠的资源预测预报技术，可操作的资源管理措施，外部条件主要是高层发展思路、管理体制的变革、配套的政策法规、经济杠杆的调节、人文素质的提高、节水意识的增强及具体节水措施、人口增长的控制、水体污染的防治、生态的恢复和重建等；⑦从宇宙科学、地球系统科学及哲学的高度审视地下水资源的可持续开发；⑧指出了地下水资源可持续开发的进一步研究方向。

In addition, the methods of abnormal data processing based on wavelet theoryare presented dentally and simulated experimentally. The results of Nanjing load forecasting show that the WVNN method possesseshigher forecasting accuracy and better adaptability than artificial neural networkforecasting methods which considers day average and day type.

通过对南京地区电力负荷数据的实验结果表明，较之考虑天气因素和日类型的人工神经网络方法预测方法，采用本文所提出的模型有较高的预测精度与较强的适应性。

These nonlinear chaos dynamitic models forecast oil consumption quantity of China. In this dissertation, it has mainly studied the fractural dimension measure to petroleum economics system, the phase space reconstruction modeling and prediction techniquesto economic chaotic time series. It puts forward chaos dynamitic models, which are forecasting model for oil consumption. Corresponding countermeasures of the oil supply-security of China are suggested by analyzing the forecasting results and the problems existing in petroleum economic system of China, especially aiming at the balance between oil production and consumption quantity.

本论文主要研究了石油经济系统复杂性的分数维度量、经济混沌时间序列的相空间重构技术、建模和预测技术；建立了石油经济系统的混沌动力学模型：石油消费的预测模型；并将此模型应用于全国的石油经济系统研究之中，对全国石油消费量做出预测，根据预测结果分析我国石油经济系统中存在的问题，并提出对策。

These nonlinear chaos dynamitic models forecast oil consumption quantity of China. In this dissertation, it has mainly studied the fractural dimension measure to petroleum economics system, the phase space reconstruction modeling and prediction techniques to economic chaotic time series. It puts forward chaos dynamitic models, which are forecasting model for oil consumption. Corresponding countermeasures of the oil supply-security of China are suggested by analyzing the forecasting results and the problems existing in petroleum economic system of China, especially aiming at the balance between oil production and consumption quantity.

本论文主要研究了石油经济系统复杂性的分数维度量、经济混沌时间序列的相空间重构技术、建模和预测技术；建立了石油经济系统的混沌动力学模型：石油消费的预测模型；并将此模型应用于全国的石油经济系统研究之中，对全国石油消费量做出预测，根据预测结果分析我国石油经济系统中存在的问题，并提出对策。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。