查询词典 impoundage

The research mainly includes:(1) As for some existing problems in simplified graded-evaporation calculation anddescription of catchment impoundage, in the dissertation, taking Dahuofang Runoff Model foran example, the function of membership grade was used to fuzzily describe the evaporationand impoundage. It can solve parameter sensitivity resulted from original graded-evaporationcalculation and get a reasonable evaporation result.

主要研究内容和成果如下：(1)对产流模型中采用分级简化计算蒸发和流域蓄水容量描述存在的问题，以大伙房模型为例，首先利用隶属度函数对蒸发和蓄水容量进行模糊描述，解决了原分级计算导致蒸发参数敏感，蒸发量计算不合理的问题。

And according to the characteristics ofunderlaying surface of catchments and that of runoff, the variation of impoundage was takeninto consideration in runoff model.

并通过分析流域下垫面和径流特点，考虑了土壤蓄水容量的变化，进一步认识流域水文循环变化规律，提高了洪水预报精度。

In this dissertation, as for some problems in flood forecast andreservoir regulation, the research had been done based on the special research topic dynamiccontrol on limit water level in flood season using theories of fuzzy optimizing theory,maximum entropy theory, entropy-weighted multi-objective decision making method, geneticalgorithm etc. And the research focused on evaporation calculation, fuzzy description ofcatchraent impoundage, fuzzy similarity calibration method, nolinear watershed concentrationmodel and error distribution maximum entropy model and risk computation of dynamiccontrol reservoir water level in flood season when the flood forecast and precipitation forecastare taken into consideration.

本文从洪水预报和汛限水位动态控制两个研究方向着手，以汛限水位动态控制研究专题的试点水库为工程背景，运用模糊优选理论、极大熵理论、熵权多目标决策法、遗传算法等理论，研究了蒸散发计算和流域蓄水容量的模糊描述、洪水预报模型参数的模糊相似校正方法、流域非线性汇流模型、误差分布的极大熵模型以及考虑洪水预报和降雨预报动态控制水库汛限水位的风险计算方法。

Impoundage;; fuzzy description;; fuzzy similarit calibration;; time-variable instantaneous unit hydrograph;; error distribution;; maximum entropy;;dynamic control on reservoir water level in flood season;; risk analysis

论文导师周惠成，论文学位博士，论文专业水文学及水资源论文单位大连理工大学，点击次数 1，论文页数 141页File Size8592K

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。