地方法
- 与 地方法 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
We summarized the methods and application of wildlife surveys in China, and analyzed the problems and faults with these methods. We introduced the method of map strip sampling which we used in a survey of argali resources in all international hunting grounds, and compared the results and differences in application with line transect sampling.
中文摘要:本文全面总结了我国野生动物调查的主要方法及应用,分析了已有方法在应用中的问题和缺陷,介绍了国际狩猎场的盘羊资源调查方法--地图样带法,并比较了该方法与样线法得出的调查结果差异和两种方法在实际应用中的区别。
-
Because of the problem of convergence, the key techniques to complete the one step simulation were explored thoroughly. The geometry mapping method based on finite element model and inverse deformation was developed to get the approximate initial blank for one step simulation. The effective selection of convergence factor in Newton-Raphson method was studied. The divergence criterion in iterative process for one step simulation was put forward. Also the countermeasure to ill equations coefficient matrix was studied.
由于存在收敛性的问题,本文重点研究了一步模拟方法计算机实现的关键技术:提出了基于有限元模型的几何映射方法和反向变形方法来确定初始毛坯的近似解,研究了带收敛因子的Newton-Raphson方法中如何高效地选取收敛因子,提出了一步模拟迭代求解过程中的发散准则,并研究了病态方程组系数矩阵的修正方法。
-
First, this paper, in the field of intrinsic geometry, studies the geometric problems on garment design, as well as applies the frame and semi-geodesic coordinates to prove the fundamental theorem of being a developable surface.
文中首先在内在几何学的层次上,研究了服装设计所涉及的几何学问题,应用标架与半测地坐标方法证明了曲面成为可展面的基本定理,研究了可展面的分类及其性质,考虑到服装三维几何造型的需要,证明了组合式可展面各组成片相切连接条件的命题,作为构造可展面的理论依据,证明了单参数平面族的包络面必为可展面的命题,在此基础上发展出服装几何造型的"刮大白"方法以及相关的三种构造可展面的解析方法。3D→2D的变换是三维服装CAD的重要内容之一,其几何学实质是曲面的定长映射,文中总结了定长映射即可展面在平面上展开的基本准则,在这一准则的指导下,结合服装设计与相关领域的要求,讨论了可展面在平面上展开的解析方法与数字方法,上述内容确立了服装设计几何学的基本框架。
-
The developing process about establish the model of earth surface and several classical methods, which are the methods of radiative transfer, geometric optics, hybrids of two or more of these, and numerical simulation are discussed in detail.
较详细地论述了建立地物散射模型的发展情况和几种典型方法:辐射传输方法、几何光学方法、复合模型方法以及数值模拟方法等,初步研究了适用于植被、土壤、沙漠等环境背景的双向反射分布函数模型。
-
The development and research progress of ground deformation induced by pipe jacking construction was reviewed in the paper.
对顶管施工引起的地面变形计算方法的发展概况及研究进展进行了分析,把地面变形计算方法归纳为现场监测方法、数值计算方法、理论方法和实例数据分析法,并进行了比较,以更好地指导工程施工。
-
Some new method is presented in this paper: A. An Integrated parameters computation method to analysis asynchronous operation of the turbine generator is given, including the equivalence of short circuit and open circuit of field windings, deducing boundary condition of 〓 method and computing frequency parameters. B. A new memory structure for sparse complex matrix and a PCCG method based on it are introduced to save memory and computation time. C. An equivalent method of vacuum is presented, and effectively eliminate the effect of corner point and accelerate convergence of PCCG method. D. Coupling the computation of electromagnetic and temperature field is discussed and model for computing temperature field of the turbine generator rotor at asynchronous operation is built.
文中提出了以下新方法:(1)在失磁异步运行转子三维涡流场计算中提出了完整的参数计算方法,其中包括励磁绕组开、短路的等效,〓法边界条件的推导及频率参数的计算方法;(2)提出了铁心内空气域的等效方法,有效地解决了开槽引起的角点奇异问题,并提高了方程组的迭代收敛速度;(3)在〓法有限元模型中,创立了一种能节约内存、提高计算速度的压缩存储矩阵格式,并建立了基于该格式的方程组解法;(4)提出了涡流电磁场和温度场两种不同场计算的合理结合方法,建立了转子三维稳态和时变温度场的有限元计算模型。
-
A character-codes model based pattern recognition method by using amplitude data of targets frequency response is proposed after the establishment of high frequency response equation of radar targets. The method uses the same unvariant character-codes to express the same target of different angles and uses sequential separating of regions of target's reference variables to obtain multiple coding vectors of all regions for every target. The category and pose of target can be determined after a two-staged classification processing such as coding processing of target range profile data and errors correcting processing of coded data. The two-stage classification results are used to target identification as posterior hypothesis to be tested by sufficient convincing and necessary convincing. The character-codes model based pattern recognition method is also adaptive to variation of target angles and controllable in error probability. Time-consuming and complicated iterative computation is not necessary in the train process of pattern recognition.
首先建立了雷达目标的高频频率响应方程,这种方程将目标多散射中心理论与目标局部谐振理论有机地结合起来;进而提出了目标多频响应结构成像方法,这种方法将瑞利区频率响应或谐振区频率响应曲线的不同部位用各种不同的近似方法去逼近,通过特征谱估计方法将目标的局部频响特征与宽带距离响应特征结合起来;然后提出了一种基于姿态角变化区域的序贯划分与多模匹配的特征编码识别方法,这种方法具有能适应目标姿态角的变化以及能控制识别的差错概率α等优点,在目标识别时只需要目标在少数有限个频率激励下的幅频响应数据。
-
2Based on the nonlinear theory, we found the reservoir seismic nonlinearprediction and evaluation method technology, it is constituted by three nonlinearmethods and the technologys of the fracture prediction, the seismic inversion and thereservoir synthesis prediction evaluation: The seismic nonlinear prediction ofreservoir fracture is one new method which is composed with the phase spacereconstruction, the nonlinear parameters pick-up technology and the syntheticprediction evaluation method. The reservoir seismic high resolution nonlinearinversion is a new seismic inversion way which the BP algorithm is embeded in theauto-adapted genetic algorithms interior to have the predominances of neural networktechnology and genetic algorithms, it adopts the new embedded GA-BP mixalgorithms and the nonlinear mapping technology, and realizes the inversionautomatically, obtains the high resolution seismic inversion profile. The reservoirseismic nonlinear synthesis prediction and evaluation is a new method which iscombined organically of genetic algorithms and adaptive neural fuzzy inferencesystem, it will optimize the new seismic attribute space which are processed to take the input, uses the new adaptive mix algorithm which GDand LSE(least-square estimation) mix algorithms of ANFIS network insert to the GAinterior and taboo search algorithms is added to the intercrossed operation place,the simulation of the evaluation parameters is used quantitative evaluation guide lineto the reservoir quality and oil-gas distribution.
2基于非线性理论,创建了储层地震非线性预测与评价方法技术,它是由裂缝预测、地震反演和储层综合预测与评价等三大非线性方法与技术组成:储层裂缝地震非线性预测是由相空间重建、非线性参数提取与预测技术及综合评价方法组成的一种新型裂缝预测方法;储层地震高分辨率非线性反演是将BP算法嵌入自适应遗传算法内部所构成的集遗传算法和神经网络技术优势于一体的新的地震反演方法,它采用嵌入式新的混合算法及非线性映射技术,自动实现反演,获得高分辨率地震反演剖面;储层地震非线性综合预测与评价是由遗传算法与自适应神经网络—模糊推理系统有机地相结合而产生的储层预测与评价的新方法,它将优化处理所形成的新地震属性参数空间作为输入,采用将ANFIS网络中的混合算法嵌入到GA算法内部与禁忌搜索算法加在交叉操作处产生新的自适应混合算法,将综合评价参数作为储层品质和含油气性的定量评价指标。
-
Coal load in ball tube of pulverizing system is affected by many factors, this paper analyzes these factors and their relations.
由于神经网络技术的发展,神经网络在非线性控制方面显示出强大的优势,同时近年来出现的逆系统方法对于多变量非线性系统的控制指出了一条可算是光明的道路,鉴于以上两项技术的优越性,本文提出对BMPS进行神经网络逆系统控制的方法,首先通过机理分析的方法建立了BMPS的非线性动态数学模型,并依此模型设计了神经网络逆系统控制方案,由于此方案中需要用到球磨机磨筒内负荷的反馈,但是磨内负荷是一个不能直接测量的量,而且其测量方法是多年来人们一直在努力的方向却又一直不能较好地解决,本文提出对其进行神经网络测量的思想和方法,这一方法的仿真试验和现场实测结果均表明其研发造价低廉的优越性和测量较为准确的实用性。
-
The new circumstances that the discrete manufacturing enterprise is confronted with are analyzed; the function and configuration of production system is expounded; the research actuality and contents about production system capacity in the discrete manufacturing enterprise are summarized; the main research contents in this paper are developed.2. The calculating and analytical methods about production system capacity are studied systemically, a model to calculate rough-cut capacity instantly in "excel" table style is designed, the means to analyze production capacity in different production mode are brought forth, and the balance tactics of production capacity versus load are put forward.3. The application characteristics used in production system about the methods of Computer simulation and CRP in the MRPII/ERP are analyzed and compared; the advantages of Computer simulation method are pointed out; and the simulation researches aiming at production system capacity are implemented by Ithink simulation software.4. A simulation model is founded under the analysis of production system capacity in the production system background of a firm; the change instances of yield, output rate and WIP in the production system are simulated by the action of procurement cycle, machining time, setup time and so on. 5. The change instances of production capacity in the assembly stage are simulated , and rational employees are obtained.
本文主要进行了以下几个方面的研究:1、分析离散型制造企业面临的新情况,阐明生产系统的功能和结构,对离散型制造企业生产系统生产能力的研究内容和现状进行分析,提出本课题的主要研究内容。2、在系统地研究生产系统生产能力的计算和分析方法后,设计了用Excel表快速计算粗能力的方法;给出不同生产方式下的产能分析方法,并提出产能与负荷平衡的策略。3、比较和分析了MRPII/ERP的能力需求计划方法与计算机仿真方法在生产系统中的应用特点,指出计算机仿真方法的优势,并用Ithink仿真软件对企业生产系统生产能力进行了仿真研究。4、以A公司的生产系统为背景,在对生产系统生产能力分析的基础上建立了仿真模型,模拟了在采购周期、加工时间、调整时间以及返工率、废品率、机械开工率等因素作用下生产系统的产量、产出率和在制品数量的变化情况。5、研究在装配阶段生产能力的变化情况,通过仿真优化后确定合理作业人员数量。
- 推荐网络例句
-
This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
-
Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
-
There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。