Another conclusion is that stability is better in accretion bank than in colluvial deposit bank. A comprehensive study has been made on the course of reservoir bank recession on the theory of fluvial and wave dynamic mechanics with a view of character of mountain land. Some appraise and rectifying suggestions for current methods are given by computing the scale of the bank recession in the area.
通过对河流水动力条件、水库波动动力学等几个方面并结合山区水库特点对水库岸坡的塌岸过程进行了系统的研究，并运用不同的方法对水库蓄水后的岸坡塌岸宽度进行了预测，从预测结果对不同的方法进行了评价，并对现有的方法和结果提出了修改建议。
The static model of torsion joint is based on that of bending joint. The effects of structure parameters inside air pressure, initial angle, rube average radius, rube shell thickness on the turning angle are analyzed and the following conclusions are drawn: the relationship between the angle of torsion joint and the inside air pressure is basically linear, the angle of torsion joint increases with the initial angle and rube average radius, the angle of torsion joint decreases while the rube shell thickness increases. The kinetic equation is built for torsion joint. Simulating experiment implies that the time of inflating and deflating process is extremely shorter than that of kinetic process. So the pneumatic process can be ignored in actual system design and control. The factors that affect the dynamic features of torsion joint, such as shell thickness of rubber tube, average radius, initial angle, connector's outlet area, moment of inertia and viscous damping coefficient, are analyzed and the following conclusions are drawn: the change of rube shell thickness has no effects on the dynamic process of FPA inside air pressure while greatly affects the turning angle of torsion joint; when the rube shell thickness is small, the torsion joint has a bigger turning angle, no overshoot and long risetime, when the shell thickness is big, the turning angle of torsion joint is small, but has high response speed, overshoot and low shock; when the rube average radius increases, the turning angle of torsion joint increases and the overshoot increases too; when the initial angle of torsion joint is big, the turning joint is big, the overshoot is small and shock is low, but the risetime is big; the connector's outlet area affects the dynamic process of FPA inside air pressure greatly, but has no effects on the dynamic process of turning angle; moment of inertia and viscous damping coefficient have no effects on the dynamic process of FPA inside air pressure, but affect the dynamic process of turning angle greatly.
在弯曲关节模型推导的基础上，建立扭转关节的静态模型，并分析了扭转关节内腔压力，初始转角，橡胶管平均半径，橡胶管壁厚等参数对关节转角的影响，得出扭转关节的转动角度与充入FPA内腔的压缩气体压力之间基本呈线性关系，扭转关节的转角随初始角度和橡胶管平均半径的增大而增大，扭转关节的转角随橡胶管壁厚的增大而减小的结论；建立了扭转关节的动力学方程，仿真实验表明FPA的充放气过程与扭转关节的动力学过程相比时间极短，在实际系统设计和控制过程中可以忽略不计；分析讨论橡胶管壁厚，平均半径，初始角度，气体节流口面积，转动惯量，粘性阻尼系数等因素对扭转关节动态特性的影响，得出橡胶管初始壁厚的变化对扭转关节FPA内腔压力的动态响应几乎没有影响而对关节转角的响应曲线影响比较明显，壁厚较小时，关节可以得到较大的转角，并且转角的响应曲线没有超调，但上升时间长，壁厚较大时，关节转角变小，响应加快，但是有超调和轻微振荡现象，橡胶管平均半径越大，得到的关节转角越大，但是转角响应的超调量也随之增大，FPA的初始角度越大，关节的转角越大，并且超调量减小，振荡减弱，但是上升时间增大，管接头出口面积的大小对关节FPA内腔压力的建立过程影响较大，但对关节转角的动态响应几乎没有影响，转动惯量和粘性阻尼系数对FPA内腔压力的动态过程几乎没有影响而对扭转关节转角有较大影响等结论。
Through the analysis of Δd-δ^18O and fluid dynamic field, the authors consider that the Ordovician geothermal fluid precipitation came from northern Yanshan area, and drained to south and west.
通过δD-δ^18O及流体动力场分析，认为奥陶系流体均为大气降水，来自北部燕山地区，并向西向南排泄。
Dated from Proterozoic to Mesozoic, they have poly-circle characteristics, found from one tectonic circle to another, which is very rare in the worldwide orogens. This reveals that the orogen and stable area of the world, the mantle and crust states of the Proterozoic and Phanerozoic are different in tectonic evolvement and dynamic process and that the rapakivi granite of the Qinling-Kunlun is a kind of orogenic granite different from the stable area of the Proterozoic.
它们出现在每一个大的造山旋回晚期，即向另一个构造旋回的转折期，这在世界造山带中是十分罕见的，反映出世界上造山带与稳定区元古宙和显生宙的地慢与地壳状态是不一样的，有着不同的构造演化历史和动力学过程，表明秦岭－昆仑地区的环斑花岗岩是一种有别于元古宙稳定区的造山型环斑花岗岩。
In order to improve dynamic performances of variable speed constant frequency in constant power output running area, research situation of variable pitch control is studied, based on RBF neural network tuning PID control, wind turbine and variable pitch control model is built, generator rotate speed measurements and speed error as input contoller.
中文摘要：为了改善变速恒频风力发电系统在恒功率输出运行区域内的动态性能，在分析系统变桨距控制研究现状的基础上，基于RBF神经网络整定PID控制理论设计风力发电系统变桨距控制器，建立了风力机及变桨距机构模型，以发电机转速测量值与额定转速相比后误差为输入设计控制器。
Taking Rudong shoal of radial sandy ridges area as an example, an integrated study is made on various aspects of impact caused by reclamation including the dynamic sediment environment, marine ecological environment, comprehensive resource development, society and economy. By using the multi-objective decision theory and methods, an assessment model of appropriate reclamation scale is set up.
以江苏辐射沙脊海域如东近岸浅滩围填海为例，运用多目标决策理论与方法，综合考虑围填海对动力泥沙环境、海洋生态环境、资源综合开发和社会经济影响，建立围填海适宜规模评价指标体系，构建适宜围填规模评价决策模型。
First of all, the energy saving control of hydraulic excavator in China and aboard are related, and the control methods are summarized in this paper. For the sake of energy saving control research, a hydraulic excavator electronic energy-saving control model is established based on CAN-bus technique. And then the aspect of the speed control of the engine is focused on, a cascade control is used, an inner feedback loop gives control over the governing throttle and an outer feedback loop does the speed regulation. The use of feed forward of the load demand, when a signal is available which is proportional to the load, then the signal can be fed forward to the input of the control system to anticipate changes in load. The power limiting control ensures optimum use of the power required for the excavator under varying operating conditions and avoids overload of the diesel engine, with the diesel engine, variable pump, and the loads as the whole dynamic system, the overall power match technique is proposed, and transfered the point match to area match by the method of area power match, so the energy efficiency is improved.
本文首先综述了国内外液压挖掘机节能控制的发展现状，并对当前所采用的节能控制方法进行了总结；为进行节能控制研究，建立了基于CAN总线技术的挖掘机电子节能控制系统；然后对挖掘机在不同工况下工作时发动机转速的控制进行了研究，采用转速和油门位置双闭环改进PID控制及负载前馈控制方法，将一个与负载成比例的信号前馈到控制系统的输入端，补偿抑制负载变化对控制输出的影响，使发动机的转速始终保持在某一允许范围内，从而使发动机始终工作在某一指定的工况；针对柴油机经常因特性的变化而导致负载扭矩超载的现象，采取了功率极限控制，既可以防止发动机失速停车，也可以取消功率储备，充分利用柴油机额定功率；最后将发动机、变量泵及负载作为一个动态系统，设计了挖掘机全局功率匹配方案，并提出区间功率匹配控制方法，改变了以往动力系统静态模式设定的缺点，使挖掘机在最佳节能区间内工作。
The project construction cost control and the management area dynamic process.
工程造价的控制与管理是一个动态的过程。
Grid, the system in Xianning City and the surrounding counties and cities have established an average spacing of 30-40km, covering an area of 10, 000 square kilometers of high spatial and temporal resolution, high efficiency, high coverage of the continuous operation of the satellite positioning system reference station integrated services At the same time, established a high-precision Xianning (plane 3 cm accuracy, precision of 5 cm height), dynamic, modern three-dimensional geodetic reference framework, and its main technical indices have reached or exceeded the design requirements: network stability and safety, Lightning Protection, reference station equipment can run 72 hours non-stop for more than 30km network RTK can achieve a fixed solution, the system on more than 95% availability, a number of manufacturers can be compatible with mobile devices, multi-user at the same time the advantages of remote management, and so on landing.
并网后，系统在咸宁市及周边县市建立了一个平均间距30-40km，覆盖面积达10000多平方公里的高时空分辨率、高效率、高覆盖率的连续运行卫星定位参考站综合服务系统，同时建立了咸宁市高精度（平面精度3厘米，高程精度5厘米）、动态的、现代三维大地测量基准框架，其主要技术指标均达到或超过设计要求：具有网络稳定性和安全性高、雷电防护、参考站设备可不间断运行72小时以上、网外30km也能实现RTK固定解、系统日可用性达95%以上、能兼容多个厂家流动站设备、多用户可同时远程登陆管理等优点。
Some new viewpoints are also discussed besides the development of researches already explored. The above mentioned aspects include exploring ne w elementary technique, possible scheme for simplifying the structure, achieveme nt of dynamic area decomposing method, establishment of distributed parallel pro cessing system and application of similarity method in numerical simulation of w elding process.
除对本研究组已开展的工作进行了一定的分析外，并对某些未来的研究发展方向进行了初步的探讨，这些可能进行的研究包括单元技术的开发、可行的结构简化方案、动态区域分解算法的实现、分布式并行处理系统的建立和相似原理在焊接过程中的应用等。
By using the fast Lagrangian analysis of continua in 3-dimensions (finite element analysis software-Flac3D), taking the fragmentation chamber of Dongguashan copper mine as an example, one dynamic load is applied on the above boundary of the chamber model, the dynamic response of the surrounding rock is simulated and calculated. We observed the influence of the intensity of dynamic load to wall rock of chamber to get the distribution of stress and plastic area of it in different time by loading the peak value of dynamic.
利用三维快速拉格郎日法（Flac3D有限元分析程序），以冬瓜山铜矿某破碎硐室为实例，在硐室围岩模型的上边界施加动力载荷，以模拟外界动力扰动对硐室围岩稳定性的影响，再通过加载峰值，来考察动载强度对硐室围岩的影响，得出了硐室围岩在不同时刻的应力和塑性区分布情况。
The release of nitrogen from lake sediment into up-covered static and dynamic water on China Three Gorges University campus which is belonged to the Yangtze River drainage area are studied.
采用校园水体底泥进行静水和动水状态下的污染物释放规律研究。
The Project of Dynamic Water Area in Olympic Rowing-Cannoeing Park is to place a channel with a high-speed current on an embankment filled with sandy silt and fine sand, since the mechanical and hydraulic properties of them are very bad, improvement have to be carried out on them.
奥林匹克水上公园动水赛道工程是将一个高速水流的水槽放置在由砂质粉土和粉细砂填筑的山体上，而粉细砂和粉土的力学和水力方面的工程特性很差，需要对其进行加固处理。
By using free and higher temporal resolution MODIS data, a software based on GIS technique was developed to monitor different types of land use inundated area in real time in the specific region, and provide quick and reliable basis for dynamic monitoring and assessing of flood.
利用免费、较高时间分辨率的MODIS数据，运用GIS技术，实现对不同土地利用类型的淹没情况的实时监测，为汛情的动态监测和评估提供迅速、直观、可靠的现状和变化信息。
Those four classification models work well in first class of Chinese Vegetaion Division. The KAPPA value of Holdridge Life Zone System, at high value of 0.57, would probably more effective than the others. But in specific area, like tibetan plateau, all of those models need to be refined or consider more elements and factors. This research also points out that the concept and technology of Digitall Earth would promote and push forward the climate-vegetation relationship research, especially in climate-vegetation factors, climatically parameters and modeling parameters, real time dynamic monitoring, effectively managing the magnitude data of climate-vegetation relationship information and supporting the mainframe of Functional Types Modeling Library.
这四个传统的分类方法在中国植被区划一级分类上是适用的，Holdridge生命地带系统KAPPA一致性指数达到0.57模拟效果优于其它三者，但在特定地区，如青藏高原，所有模型均需改进优化或启用新的模型因子才能很好地区分植被亚地带，本研究还指出，数字地球技术的应用有助于推动气候—植被关系的研究，尤其在气候—植被指标的大范围实的动态监测、气候—植被关系数据的海量信息高效、有序基础管理和功能模型库支撑框架体系方面。
A dynamic diagnostic model based on hydrostatic equilibrium was applied to simulate meteorological fields in the area of Nuclear Power Plant Dayawan, dynamic and thermal effects of non-homogeneous underlying surface upon wind field were investigated.
采用一个基于流体静力平衡的动力学诊断模式对大亚湾核电站厂址区域的气象场进行实际模拟，研究了复杂地形和下垫面对流场的动力和热力作用。
The invention provides a control method for using color LED light source as backlight source of the LCD, which comprises adopting color LED as the backlight source, time-sharing lightening LED by field sequential system principle, synthesizing color iamge by human-eye visual persistence effect; inserting full-black frame in time-sharing lightening time sequence for reducing round-off phenomenon when displaying dynamic image; mixing lightening backlight source LED of positive sequence and negative sequence for reducing degree of color breakup phenomenon; in addition, the invention provides a method for controlling the dynamic area for further improving contrast.
本发明提出一种采用彩色LED光源作为液晶显示器背光源的控制方法。它采用彩色发光二极管LED作为背光源，应用场序制原理分时点亮发光二极管，利用人眼的视觉暂留效应合成彩色图像；在分时点亮的时序中插入全黑帧，以减少在显示动态图像时的扫尾现象；混合正序和逆序点亮背光源LED，以减轻色乱现象的程度；另外还加入了动态区域控制的方法，以进一步提高对比度。
In this paper, a new green method of dynamic membrane pressure is introduced to monitor the water surface microlayer in Changjiang river estuary. The result shows that there is good linear relation between area of hysteretic loop and COD value.
本文根据有机物易趋向水体表面的特性，介绍一种无二次污染的动态膜压法监测技术用于长江口水域微表层的环境监测，该方法动态表面张力的滞回环面积与COD有较好的相关性。
In the data mining area we propose three effective methods of selecting features for high dimensional data based on neural networks, and present a new data classification method with robustness based on the blend of rough sets theory and neural network, which can effectively abstract the rules of classification; And we propose a new dynamic self-organizing maps network with simplification structure and high efficiency, which can realize hierarchical clustering of a data set, and a new data clustering method based on density and distance, which can identify the clusters with any sharp; And we present a new data classification method based on the blend of neural network and decision tree, in which a minimum decision tree can be directly genarated; We present three new effetive methods of time series database knowledge discovery, and all the methods have better forcasting precision than traditional methods; We also propose four new methods of constructing support vector machine with rapid training speed and propose a new muti-class data clssification method based on two-fork tree, and all the methods have obvious improvment for SVM''s performance; In the area of text mining we propose five effective methods for reducing the dimension of text vector, which include the pattern aggregation based method, the LSA based method, the conbination method of rough sets and GA, the combination method of concept index and rival penalized competition learning, and all the methods possess high efficiency and high precision; We present a new method of abstrcting rules from texts based on features selection approch using CHI values and rough sets, and the method is much more practical than traditional similar methods.
在数据挖掘领域，在高维数据降维方面共提出三种有效的基于神经网络的特征选择方法；提出了一种新的将粗集与神经网络结合的数据分类模型，可有效地抽取分类规则并具鲁棒性；提出了一种结构简单，高效的动态自组织特征映射模型及一种基于密度和距离的数据聚类新方法；提出了一种神经网络与决策树相结合的分类新方法；提出了三种基于神经网络的时间序列知识发现的新方法，均具较高的预测精度；提出了构建支持向量机快速训练的四种新方法及一种基于二叉树的SVM多类分类法，均较前人的方法有明显改进。
Besides functions of ordinary monitoring and control system, the system controls water pump to start up by the method of dynamic water level over the mark and sends pictures of emergency fields to supervisors. It can encapsulate basic functions in Web service, so as to realize a quick view of field information in range of local area network and wide area network.
除具备一般监控系统的功能外，该矿井主排水智能监控系统采用基于动态超限水位的方法控制水泵的启动，并将警情所在现场的图片信息发送给责任者；将基本功能封装为Web服务，可在局域网和广域网范围内实现对现场信息的快速查看。