With the construction of Guanzhong-tianshui economic area to coordinate scientific and technological resources to practice in the software industry. 随着关中-天水区域的建设,统筹科技资源在软件产业得以实践。
Research and Practice of Moving Nine Parameters used in Large Area GPS Coordinate Transformation 游动九参数法用于大区域GPS坐标转换的研究与实践
In this paper, the third version of area coordinate systems for quadrilateral elements ( QAC-III) with two coordinate components ( T1, T2) is systematically established. 该文系统地建立了具有两个坐标分量(T1,T2)的四边形单元第三类面积坐标系统(QAC-III)。
The new village is the reasonable choice of solving problem of "issues of agriculture, farmer and rural area" and the coordinate development of city and country. 推进新农村建设是限免“三农”问题,城乡协调发展的理性选择。
By making use of the relation of the area element on the surface and the area element on the coordinate surface, the second surface integrality is straightly translated to the duplicate integrality under distinct conditions. 然后利用曲面面积元素与坐标面上的面积元素的关系,再转化为二重积分,简化了第二类曲面积分的计算。
A quadrilateral plate bending element by using area coordinate method 采用面积坐标的四边形板弯曲单元
A Multi-level Optimization Method for Space Trusses with Combining Sectional Area and Coordinate Variables 具有两类变量的空间桁架分层优化方法
In order to improve computing efficiency and save running time, an automatic searching method is presented, which is a coupling of area coordinate searching algorithm and alternative digital tree ( ADT) searching algorithm. 提出了将面积元坐标搜索算法与交替数字二叉树搜索算法(ADT)相结合来跟踪模拟分子在网格之间的迁移;
The new Quadrilateral Area Coordinate ( QAC) method is a powerful tool to construct 2D finite element models. 四边形面积坐标(QAC)方法是新近提出的构造二维有限元模型的工具。
The area coordinate method has been successfully applied to construct triangular elements. 构造四边形单元时,应用面积坐标方法有其优点。
In the three source recharge system, the mixing ratios originating from every recharge source, equals the area coordinate value of the triangle that is enveloped by the three sources as top points in the right angle coordinate of the U content 234 U excess. 地下水三元补给体系的各补给源补给的混合比率,其数值等于在U含量-234U过剩直角坐标系中,以该三个端元为顶点围成的三角形内被补给点的面积坐标。
Precision Analysis of Measurement and Computation Land Area by Using Coordinate Method 坐标法面积量算的精度分析
Two generalized conforming quadrilateral thick plate elements are developed in this paper. A QUADRILATERAL THIN-THICK PLATE BENDING ELEMENT BY USING AREA COORDINATE METHOD 本文构造两个广义协调四边形厚板元ATF-PQ4a和ATF-PQ4b。采用面积坐标的四边形厚薄板通用单元
A quadrilateral plate bending element with 12 degrees of freedom, ACQ, is developed by using the area coordinate method and the generalized conforming approach. 本文采用四边形面积坐标,并应用广义协调法构造出一个具有12个自由度的四边形板弯曲单元。
And only in a certain scaling area in dual logarithmic coordinate sys-tem, can the relation between fitted power spectrum and frequency be expressed as S ( f), which coincides with the definition of fractal geometry. 在双对数坐标系下,只在一定的标度区间,拟会功率谱与频率的关系才能表示成S(f),亦即将会分形几何学定义。
A multi-level optimization method for space trusses with combining area and coordinate variables and static and dynamic constraints is described in this paper. 本文叙述了一种具有杆件截面积和节点位置两类变量以及静、动力多种约束的空间桁架分层优优方法。
Quadrilateral Area Coordinate ( QAC) method is a new tool for developing 2D quadrilateral finite element models which are insensitive to mesh distortion. But this new system can not handle curved-side cases directly. 四边形面积坐标方法是一种构造二维四边形有限元模型的新工具,为解决单元网格畸变敏感问题提供了新途径,但是这种方法还不能直接模拟曲边网格的情况。
Application of Area Calculation by Using Coordinate in Coal Reserves Calculation 坐标法计算面积在储量计算中的应用
Secondly, the quadrilateral area coordinate is adopted instead of isoparametric coordinate, so that the element can keep high accuracy for different meshes of distortion. 第二,采用四边形面积坐标,以代替通常的等参坐标,从而使网格畸变时仍然保持高精度;
Consequently, the object's area, perimeter and coordinate value of center of mass are obtained, which are necessary for target recognition. 在此基础上获得目标的面积、周长和质心坐标等参数,为图像目标识别做好准备。
The feasibility of area coordinate quadrilateral thin shell element is elaborated, which improve analysis precision and efficiency of sheet metal forming. And the detail formulation is evolved. 论证了在动力显式有限元算法中应用面积坐标四边形单元模型的可行性,从而有效提高成形分析效率和精度。
This paper introduces the principle of area calculation by using coordinate and the application of this method in coal reserves calculation and the key program design point in coal reserves calculation. 论述坐标法计算面积的原理及其在矿井储量计算中的应用,并给出该方法计算储量程序的设计要点。
Construction of quadrilateral membrane elements with drilling DOF using area coordinate method 面积坐标法构造含转角自由度的四结点膜元
The area coordinate system, which has more quadrant information than the rectangular coordinate system, was used to derive the augmented quadrant based linearization method to solve the optimal range location problem. 利用面积坐标系比直角坐标系具有更多象限信息的特点,推导了3站和一般情况下非线性测距方程的精确线性化方法,解决了最佳线性测距定位估计问题。
Two 4-node, quadrilateral generalized conforming thin plate elements, A Ψ Q-I and A Ψ Q-II, were successfully developed by directly assuming rotation field and using quadrilateral area coordinate method. 采用四边形面积坐标方法,从假设转角位移场入手构造了两个广义协调四边形4结点薄板单元AΨQ-I和AΨQ-II。
A Method of High-speed Calculating the Boundary Length, Area and Center Coordinate of Body 快速计算物体边界长度、面积及中心坐标的方法
Firstly, a new quadrilateral area coordinate ( QACM-ⅲ) with two coordinate components is proposed. Then related differential and integral formulae are given and the coordinate system that describes the mesh distortion is discussed. 首先,本文提出另外一种含有两个坐标分量的四边形面积坐标(QACM-Ⅲ),给出了相应的微分和积分公式,并讨论了该坐标系对网格畸变的描述。
Parallel Double-Joint CMM ( Coordinate Measuring Machine) studied in this paper is a new kind of CMMs and it belongs to the area of non-orthogonal coordinate measuring equipment. 本论文研究的对象平行双关节三坐标测量机是一种新型的三坐标测量机,这种测量机属于非正交坐标测量范畴。
In June 2007, Chongqing has become the national urban and rural comprehensive reform pilot area to coordinate the development of urban and rural areas. And it made many new requirements for Chongqing in the future socio-economic development of all aspects. 2007年6月,重庆市正式成为全国统筹城乡综合配套改革试验区,统筹城乡发展对重庆市未来社会经济发展的各方面提出了新的要求。
Secondly, two plate elements are constructed by the combination of area coordinate and analytical trial function and they have excellent performance through numerical examples. 其次,结合面积坐标与解析试函数法,构造出两个板单元,通过数值算例得出单元的性能优良。