改进

Through a filter experimentation on a typical scalar quantity non-linear system, we made a comparison of the performance on these algorithms, and the results showed that these improved algorithm improve the performance of particle filter in different degree, and the UPF has the best performance.

通过对一典型标量非线性系统的滤波实验，对4种改进算法的性能进行了仿真比较，实验结果表明，4种改进算法都从不同程度上改善了粒子滤波器的性能，其中，UPF的性能最优。

This paper describes an improved Scorecard Model which has much reference value and can be widely applied to various industries.

并在此基础上对计分卡绩效考核模型进行了改进，改进的计分卡绩效考核模型在很多行业有较大的应用和参考价值。

Owe to improved design of wheat precision seeder , the whole structure and planting seed capability of new machine are increased at some extent.

经过对小麦精量播种机的改进设计，新样机的整机结构和播种性能都有了较好的改进。

The improvement is 45% for the phase-lag of S2 after assimilating the altimetric data of the crossover points, while the correction for the diurnal constituents is not so good as for semidiurnal constituents.

利用基于最优插值法的混合法将交叉点的调和常数同化到动力模式中，同化后S_2分潮的迟角精度改进最大，可以改进45％，结果显示高度计资料的分析结果对模式结果的精度影响很大。

On this basis, according to historical data, apply ANN and differential simulation method to get the quantitatively correlative relations between each production and its own influence factors, and introduce the new methods of prediction for dynamic indexes with gas-field development (The combinatorial prediction method based on fuzzy comprehensive evaluation, the method of ANN to select optimally combinatorial prediction models and the ANN prediction method based on genetic algorithm).(2) Base on mathematical programming, combine with quantitative economics and techno-economics, introduce economical indexes to establish production"s distribution optimal model, production"s constitution optimal model and measured production"s constitution optimal model, including multi-objective models and five-years models. Upon this, the optimal project for all gas field and each gas-collected factory can be got. Also, introduce the time value of capitals to improve on these models.(3) Base on the optimal solution theory and algorithm theory for the nonlinear programming problem, introduce the SUMT algorithm and genetic algorithm to study how to solve the models, and on the basis of normal genetic algorithm, make use of auto-adaptively modulating method to improve on normal genetic algorithm; Base on algorithm"s convergence theory and calculation"s complexity theory to analyze seriatim SUMT algorithm"s convergence and genetic algorithms convergence, and compare performance with each other.

在此基础上，利用神经网络方法和微分模拟方法根据历史数据得到各分项产量与其影响因素之间的定量关联关系，并引入气田开发动态指标新的预测方法(基于模糊综合评判的组合预测方法、神经网络优选组合预测模型预测方法以及基于遗传优化的神经网络预测方法)；(2)以数学规划为基础，结合数量经济学和技术经济学，引入经济指标建立产量分配优化模型、产量构成优化模型、措施产量构成优化模型、气田开发多目标规划模型以及五年规划模型，进而获得全气田及各采气厂的最优方案，并引入资金时间价值对五年规划模型进行改进；(3)以非线性规划问题的最优解及算法理论为基础，引入SUMT算法以及遗传算法对模型的求解进行研究，并在原有的遗传算法基础上，引入自适应调整方法对遗传算法进行改进；以算法的收敛性理论和计算复杂性理论为基础，逐一分析SUMT算法以及遗传算法的收敛性，并比较三种算法的优劣性。

They are the improved fuzzy identification method based on Box-Cox transformation and Sigmoidal function, respectively.

一种是基于Box-Cox变换的改进模糊辨识方法，另一种是基于S型变换函数的改进模糊辨识方法。

A new mathematical model of intelligence test paper generation system was set up. To avoid slow-convergence and local convergence of simple genetic algorithm, a kind of improved genetic algorithm was proposed in this paper.

建立了一种新的试卷矩阵数学模型，提出了改进的遗传算法编码方式，并通过改进初始群体的产生方法和遗传算子，有效提高了遗传算法的收敛速度，并较好地避免了局部收敛现象。

The software includes two modules. One is to evaluate and manage how smoke bomb can shield the thermal images, which can be used as the guide in the development and improvement of thermal smoke bomb. The other is to process the data of thermal images under smoke-screen to locate target in the shortest time and improve the quality of the target thermal images, which can be used as the reference to further design for development and improvement of thermal image.

该软件主要包括两大功能模组：1红外烟幕对热像图遮蔽效果的评价和管理模块，利用该模块研究红外烟幕环境对红外与热像传输影响的定量测试与评价，指导红外烟幕弹的研制与改进；2红外烟幕遮蔽条件下热像图增强处理模块，该模块主要是研究采用一定的处理方法，改善烟幕遮蔽条件目标热像图的观察效果，争取最短时间发现或识别目标，为今后热像仪的研制设计、改进提供参考依据。

The authors discuss a new numerical simulation method of the downburst wind loads on the basis of the previous research. Firstly, the wind speed is expressed as the sum of an instantaneous mean wind speed and an amplitude-modulating non-stationary fluctuating wind speed. Secondly, a new method based on the modified Osegguera and Bowles/Vicroy model to simulate the mean wind is presented and the fluctuating wind is simulated by a modified spectral representation method.

在将下击暴流风速表达为时变的平均风速和调制的非平稳脉动风速之和的前提下，本文采用基于改进的OBV模型Oseguera and Bowles/Vi-croy(OBV的方法来模拟平均风速，其平均风速直接由改进的OBV模型表达，而不同于已往研究中将平均风速表达为竖向风剖面与时间函数的乘积，并采用结合快速傅里叶变化的谐波叠加法来模拟调制的非平稳脉动风速。

The modified particle swarm optimization is utilized to solve the proposed reactive power optimization model; and combining with non–stationary multi-stage assignment penalty function, the reactive power optimization problem is transferred into a problem to solve extreme-value without constraints, thus the calculation accuracy and global convergence ability of MPSO are effectively improved, and power grid company can achieve maximal economic benefit by means of the proposed algorithm.

应用改进粒子群优化算法求解该无功优化模型，并结合动态调整罚函数法将无功优化问题转化成无约束求极值问题，从而有效地提高了改进粒子群优化算法的全局收敛能力和计算精度，使电网公司取得了最大经济效益。

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。