旋转运动

The mechanism is composed of two ball screws, U-type linear rails, linear bearings and flexible couplings. The permanent magnetic direct current motors are used as actuators. The rotary encoder is used to measure the angular position of the DC motor. The digital controller is implemented on the personal computer and a motion control card (EPCIO-6000). The objective of this thesis is to realize precise positioning control using a real-time motion control system on an X-Y table.

机械结构包括有滚珠导螺杆、U型线性滑轨组、线性轴承及可挠性连轴器等；致动器是采用永磁式直流马达(permanent magnetic direct current motor)；感测器是使用光学式旋转型编码器来量测马达旋转的角度；控制器则是以个人电脑为控制核心，搭配运动控制轴卡(EPCIO-6000)所组成。

There are series of papers studying the solvability of an incompressible, viscous, instationary fluid contained in a domian bounded entirely by a free surface. In 1977, Solonnikov proved its local solvability in a Holder space for any initial date but without surface tension. In 1984, he considered the same problem in a Sobolev space with surface tension being taken into account. In I992, Mogilevskii and Solonnikov treated the same problem in a Holder space, where the coefficient of surface tension is not a constant. There are also short-time existence results for the solvability of an incompressible, vicous, unsteady fluid bounded above by a free surface and below by a fixed bottom which approach horizontal planes at infinity. In 1981, Beale proved its local solvability in a Sobolev space for any initial date but without surface tension. In 1983, Allain were concerned with the same problem in R〓 with surface tension but under the assumption that the initial fluid domain was near a horizontal strip. In 1987, he obtained the same result without the preceding assumption. In 1996, Tani solved the same problem in R with surface tension. For the solvability of an incompressible viscous instationary fluid in Ω R bounded inside by a free surface S and outside by a rotating boundary S, in 1995 Ciuperca proved its local existence in a Sobolev space for any initial date but without surface tension. In this paper, we consider the same problem with surface tension.

对于边界完全是由自由边界组成的有界区域中粘性不可压流体的非定常运动问题，Solonnikcv于1977年在忽略表面张力情况下证明了初值问题小时间解在Holder空间的存在性，于1984年在有表面张力情况下证明了初值问题问题小时间解在Sobolev空间的存在性，Mogilevskii和Solonnikov于1992年在表面张力系数可以不是常数情况下证明了初值问题小时间解在Holder空间的存在性；对于上面是自由边界、下面是固定边界且两边界在无限处趋于水平的无限区域中粘性不可压流体的非定常运动问题，Beale于1981年在忽略表面张力情况下证明了初值问题小时间解在Sobolev空间的存在性，Allain于1983年在有表面张力情况下证明了R中初值问题小时间解在Sobolev空间的存在性，但其中假定初始区域近似是个水平条，他于1987年去掉了这个假定得到同样的结果，Tani于1996年在有表面张力情况下证明了R中初值问题小时间解在Sobolev空间的存在性；对于R中内面是自由边界、外面是旋转边界S的有界区域中粘性不可压流体的非定常运动问题，Ciuperca于1995年在忽略表面张力情况下证明了初值问题小时间解在Sobolev空间的存在性，本文考虑了在有表面张力情况下初值问题可解性问题。

Then by using homography relation, the prediction of the object position can be obtained on the image plane of the dynamic camera. Finally, after calculating the rotation angle of the dynamic camera plate, we can implement the servo control of the dynamic camera. We also discuss the technical problems of the error compensations of the system.

系统在静态摄像机的图像平面上建立目标的2D运动模型，采用卡尔曼滤波实现目标运动位置的预测，然后再利用单应性关系，得到在动态摄像机图像平面上对应目标的位置预测，计算动态摄像机平台所要旋转的角度，实现对该摄像机的运动控制，同时也讨论了系统的误差补偿等技术问题。

M moment of couple in the following sequence: intact, instability, Germany AESCULAP SSE hanger fixation and neotype shape memory alloy cervical hook fixation.

将标本固定于脊柱三维运动试验机上，施加2.0 N？m的纯力偶矩。测量标本的前屈、后伸、左侧弯、右侧弯以及左、右旋转等6个运动方向的运动幅度。

The 3D motion informationincluding ante-flexion,back-stretch,nearside bending,and starboard bending of the human cervical spine were measured for unstable,fixed,and fatigue loading states.

采用该方法分别对保存良好的人体颈椎标本在失稳、内固定以及疲劳3种状态下的三维运动情况(包括前屈、后伸、左侧弯、右侧弯4种运动)进行了测量，并以每种运动情况下的颈椎C 1-C 2节相互旋转角度衡量其内固定的效果。

The 3D motion information （including ante-flexion, back-stretch, nearside bending, and starboard bending） of the human cervical spine were measured for unstable, fixed, and fatigue loading states.

采用该方法分别对保存良好的人体颈椎标本在失稳、内固定以及疲劳3种状态下的三维运动情况（包括前屈、后伸、左侧弯、右侧弯4种运动）进行了测量，并以每种运动情况下的颈椎C1-C2节相互旋转角度衡量其内固定的效果。

We tested the knees at flexion angles of 0, 15, 30, 60, and 90with the following applied loads: 10 Nm varus moment, and 5 Nm external and internal rotational torques.21,22 To calculate the force applied in varus rotation testing, we took the desired moment (10 N.m) and divided this by the distance from the joint line to the point of force application in meters.

我们检测了施加力量10N.m的内翻运动和5N.m的外旋和内旋运动，各种运动的膝关节屈曲角度分别为0°、15°、30°、60°和90°。为了在内翻旋转试验时计算施加力，我们采用期望力矩(10M.m)，并将这种力矩分为从关节线到施加力点数米远的距离。

Methods: 12 fresh frozen adult leg-foot specimens were mounted in a coordinated system, a Steinmann pin was perforated across the calcaneus, cuboidcum, talus, and naviculare as markers. The displacements of the marked points in the coordinated system were recorded. Through matrix translation and Euler equation, the rotational angle of the calcaneus, cuboideum, talus, naviculare were calculated, which represented the motion of the calcaneocuboid, talonavicular and ankle joint in different condition respectively, while statistical analysis were also taken between different conditions.

取新鲜足标本12例，通过加载使足产生某种形式的运动，用三维数字化坐标仪测量距下关节组成骨在某种运动状态下的相对三维坐标位移，通过矩阵转换和求解非线性函数方程计算其三维旋转角度，确定距下关节的运动范围、规律和在足整体运动中的作用。

The CBST classes included actiities in which participants moed their upper bodies while bouncing and catching a ball; increasing the complexity of ambulatory tasks, such as changing direction to walk forward or laterally; walking on a plank; turning, bending and stepping on and off curbs; stepping oer obstacles; and more.

太极拳主要是调节身体的协调性，重心的转移，包括一只脚站立，臀部和踝关节的旋转，向前运动、向后运动，和向旁侧运动，等等。

The trancings of condylar movement of Angle class two division one subdivision malocclusion with mandibular retrusion during mandibular movement are smooth and continual curve. There are no differences with condylar movement distances, condylar inclination and the hinge axis rotation between right and left condyle. There are no variance to movement form of the hinge axis comparing with normal occlusion. But the overlapping gender of condylar movement trace decrease than normal occlusion.

在不同的下颌运动中，双侧髁突在矢状面和水平面的运动轨迹均为光滑连续的弧形曲线，髁突位移、矢状面髁突倾斜度、水平面髁突倾斜度及铰链轴旋转度左右两侧无明显差异，铰链轴运动形态与正常牙合无明显差异，但轨迹的重复性低于正常牙合。2。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失