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points     
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     Research on the Theory, Method and Application of Surface Reconstruction from Scattered Points
     散乱集曲面重建的理论、方法及应用研究
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     Research on the Peeling Six Points Centering Theory and Mathematics Simulation
     旋切六定心理论及数学模拟研究
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     Research on Remote Sensing Image Correction Model in Region of Lack Control Points
     稀少控制下遥感影像纠正模型研究
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     Positive Solutions for Nonlinear Boundary Value Problems and Random Fixed Points Theorems
     非线性边值问题的正解及随机不动定理
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     Rectification for High Resolution Remote Sensing Image under Lack of Ground Control Points
     缺少控制的高分辨率卫星遥感影像几何纠正
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  点的
     Rectification for High Resolution Remote Sensing Image under Lack of Ground Control Points
     缺少控制点的高分辨率卫星遥感影像几何纠正
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     The Research on the Method of Rendering Based on Discrete Points
     基于离散点的绘制方法研究
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     MEASUREMENT OF THE SUPERCOOLING POINTS OF THE OVERWINTERING LEIS AXYRIDIS (PALLAS)
     越冬异色瓢虫Leis axyridis(Pallas)过冷点的测定
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     A 3-d HYDROGEN-BOND MODEL WITH TWO CRITICAL POINTS
     具有双相变点的一种三维氢键模型
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     On the Boundary Value Problems for a Class of Ordinary Differential Equations with Turning Points
     关于具有转向点的一类常微分方程的边值问题
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     The Linked Component of Maximal Points in A Molecular Lattice and its Application
     子格的极大点的相通支及其应用
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     The average Harris score was increased from 40.18 to 85.34 points after the surgery.
     Harris评由术前的40.18恢复到术后的85.34
短句来源
     There were 4 time points,including weeks 4,8,12 and 16,with 5 in each time point.
     每组又4,8,12,16周4个时间点,每个时间点为5只。
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     And the score of motor function was enhanced from(44.8±9.2) points before operation to (56.0±8.1) points, thte score of touch sensation was increased from (55.6±12.3) points before operation to (68.8±10.1) points.
     运动功能由术前(44.8±9.2)提高到(56.0±8.1),触觉由术前(55.6±12.3)提高到(68.8±10.1),痛觉由术前(57.6±12.9)提高到(71.6±9.9),P均<0.01。
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     ③Differences of Mankin score between osteoarthritis group and the other 3 groups were significant [(8.97±1.02), (0.00±0.00), (5.62±0.86), (6.13±0.64) points, P < 0.05].
     ③骨关节炎组的Mankin评与其他三组差异有显著性[(8.97±1.02),(0.00±0.00),(5.62±0.86),(6.13±0.64),P<0.05]。
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  要点
     Main Points for Designing and Manufacturing F_4 Seal Ring in Rotating Valve Stem
     转动阀杆用F_4密封圈的设计制造要点
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     Several Key Points in the Production of High Sulfate Resistant Cement with Low Alkali Content
     生产低碱高抗硫酸盐水泥的一些要点
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     The Anatomical Main Points of Fetal Renal Transplantation
     胎儿肾移植的解剖学要点
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     A REVIEW OF MAIN POINTS IN HIGH T_C SUPERCONDUCTING THEORIES
     高T_c超导理论要点综述
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     Main Points of Microcomputer Belt Scale Design
     WPC电脑皮带秤设计中的几个要点
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  points
A varietyQ??19 is explicitely constructed as the union of 22 disjoint irreducible components which are either points or open subsets of linear spaces.
      
More precisely, each orbit of the above action intersects one componentX ofQ in a finite number of points and the action of PGL4 restricted on each componentX is equivalent to the action of a finite groupGX onX which can be explicitely computed.
      
We prove that, for a real reductive algebraic group, they can be characterized as the spaces of real points of affine spherical homogeneous varieties of the complexified group.
      
Rational smoothness and fixed points of torus actions
      
We also describe the closure of orbits and then give applications to the repartition of rational points on K3 surfaces.
      
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In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the...

In this paper the general synthesis problem of optimal control systems with the criterion of transient responses as a positive integral functional (3) is discussed.In the first part it is assumed that the motion of controlled object is described by a system of ordinary differential equations and that the final states of the system form a bounded and closed convex region in n-dimentional euclidian phase space. A method is proposed for finding all optimal control functions which lead any starting state into the given final region of states. Some conclusions are obtained from the maximum principle by using transversal conditions of optimal trajectories in terminal points, and the particular properties of the stated problem are pointed out. The case of linear dif-ferential equations with integral quadratic functional criterion is investigated in detail.Further, in the second part the fundamental properties of isoloss regions, the rela-tions between the isoloss region and optimal control functions are indicated. As a direct result a partial differential equation determining the optimal loss-function J (x) is found and the connection between function J (x)and optimal vector control function u (x) is also stated. The methods proposed are practically the extension of the me-thods used by us for designing time optimal control systems as seen in [5, 6 ,7].Finally, an example is illustrated with optimal trajectories shown in phase plane.The necessary numerical data is calculated by an analog computer with high accuracy.

文中研究了具有公式(3)表示的一般正积分泛函的最优控制系统的综合问题.在第一部分中研究了具有控制参数的一阶微分方程组.控制系统的终点状态为n维相空间内的某一逐段光滑边界的闭性区域Ω.文中指出了根据极大值原理和轨道终点的横截条件寻找引到Ω的所有最优轨迹的方法.这里详细地研究了具有二次泛函和被积函数中不明显含有控制参数的质量指标泛函的线性方程情况.在文中第二部分研究了等损耗区的主要特性.指出了等损耗区与最优控制函数之间的关系.导出了求算最优损耗函数J(x)的偏微分方程,以及这一函数与最优控制函数u(x)的关系.上述方法是我们曾在文献[5,6,7]中用过的最优快速系统的综合方法的推广.文章最后举有例证.

In this paper the logical structure of contactless telemechanical system for distributed objects is discussed. A simple method of variable system structure for transmitting and receiving telemechanical information is adopted. The idea is that the information oc-curred in every controlled point (station) and the information of some of those objects,which frequently change their states, are transmitted continually and cyclically, while for other objects their information is transmitted only after any change...

In this paper the logical structure of contactless telemechanical system for distributed objects is discussed. A simple method of variable system structure for transmitting and receiving telemechanical information is adopted. The idea is that the information oc-curred in every controlled point (station) and the information of some of those objects,which frequently change their states, are transmitted continually and cyclically, while for other objects their information is transmitted only after any change in their states. Thus,the speed of operation will be increased, and also the error probability of system syn-chronization will be decreased. For the realization of the variable logical system struc-ture, several blocks are used repetitively. For example, two commutators and one sim-ple logical unit are used to construct a simple automatic sequential encoder, and at the same time, the two commutators are used also to operate as a matrix commutator for receiving telesignalling information etc. Therefore the system is comparatively simplified and attains a higher degree of "minimization".

本文研究了无触点集中-分散目标远动系统的逻辑结构.文中提出了采用简单的系统变结构来发送和接收信息的逻辑结构方式.对被控制点及一部分比较重要或变化比较频繁的被控制目标的信息,保留了循环传送,而对大部分变化比较慢的被控制目标则采用目标有变化时才传送信号的方式,这样就提高了系统的平均动作速度,同时也减小系统的失步概率.文中采用环节的复合利用及简化的逻辑单元线路来实现这种系统的逻辑结构.例如用两个分配器和一个简单的逻辑单元“和”线路组成了很简化的选点自动程序编码器,同时这两个分配器又复合利用兼组成目标信号接收矩阵式分配器等,因而可以使得这种系统同时又具有较高的极简化度.

This paper describes the dynamic behaviors of a selfbiased bistable multivibrator by the use of waveform analysis with special attention to the switching action of the isolation diodes and the effect of the symmetrical triggering pulse. Seven typical forms of transi-tion and four typical forms of failure are introduced in which the monotonic transition case with the grid voltage intersection point at the leading edge of the triggering pulse gives the highest dynamic stability. Experimental results are included...

This paper describes the dynamic behaviors of a selfbiased bistable multivibrator by the use of waveform analysis with special attention to the switching action of the isolation diodes and the effect of the symmetrical triggering pulse. Seven typical forms of transi-tion and four typical forms of failure are introduced in which the monotonic transition case with the grid voltage intersection point at the leading edge of the triggering pulse gives the highest dynamic stability. Experimental results are included to illustrate the main points.

在研究触发器的动态过程中,我们考虑了隔离二极管的开关作用和触发脉冲的影响,介绍了一种简单直观的分析方法. 文中概括出触发器的七种典型翻转过程和四种破坏情况,指出“交点在前沿的单调翻转过程”的动态可靠性最高.文中主要论点都有实验验证.

 
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