分划

First the math theory of machining simulation is studied, and the set structure of NC machining simulation system whose components, including time, input, output and so on, are defined. Hereby we set up the hierarchy structure, the logical structure, the static model and the dynamic model of simulation system. The construction method of sweep entity of cutter and rotation parts is researched, and their differential geometry invariants are calculated. NC code is unscrambled, and the recursion division arithmetic of time segment is put forward, which is the driven data of the movement or rotation parts. The CLDATA should be interference-free. To examine if there is interference between cutter flank and the work piece, an arithmetic that discussed the existence of intersecting curve between them is put forward. To examine if there is interference between two turrets, an arithmetic that discussed the existence of intersection set between two polygons is put forward.

首先研究加工过程仿真的数学基础，然后定义数控加工仿真系统的集合结构及时间集、输入集、输出集等概念，建立加工仿真的层次结构和逻辑结构，阐述双刀车削仿真系统的静态模型和动态模型建立方法，分析刀具扫描体和旋转部件扫描体的建立方法及其微分几何性质；研究NC代码解读技术和双刀加工时间段递归子分划技术，为驱动各仿真单元作数据准备；通过讨论后刀面和工件表面交线的存在性判断刀具后刀面与工件间是否干涉，通过求多边形的交集判断刀架与刀架是否干涉。

Your actual year should land somewhere in between of course, but however you slice it, things are looking up for you astrologically in this area.

这一年的实际情况必然位居两者之间，不过无论你怎么分划，这一领域的事件都会顺应天意找上门来。

Key words : Biocoenosis assemblage analysis, Vegetation zonation, Hengchun Peninsula, Southern Taiwan

本文探讨台湾南部恒春半岛的气候带与植被带分划上的归属与植群型的归类问题。

Through the research on COBWEB and CLASSIT,this paper presents a new representation method of numeric attributes.

本文在对COBWEB、CLASSIT等概念聚类系统研究的基础上，提出了一种用数值属性的聚类分划来表示数值属性的方法。

Follow-the-pointer dials provide level indication from the stable vertical in Plot or from an auxiliary stable element in the after fire control station, when the pointer is unable to keep his telescope crossline on the target or horizon.

当高低瞄准手不能将目标或水平面稳定在瞄准镜十字分划上时，炮塔内的同步指针刻度盘（follow-the-pointer dial）将显示由绘图室的垂直稳定器或后部射击指挥所的辅助稳定装置测出的水平面。

With the starters resting on the bench in the fourth quarter, the smallish fivesome of Shannon Brown, Sasha Vujacic, Adam Morrison, Luke Walton and Josh Powell did well to preserve L.A.'s lead, even pushing it to 90-78 halfway through the quarter when Vujacic's three bounced high off the front rim before sinking through.

第四节，先发们都在场下休息，五个小个阵容：布朗，武贾西奇，莫里森，沃顿和鲍威尔抱住了湖人的领先优势，甚至当武贾西奇的三分划出了高高的弧线后应声入网，湖人已经90—78领先了。

Differing from the general BEM that is attributed from the general boundary integral equation, The natural boundary element method attributed from the natural BIE has not only the advantage of the dimensionality, but is confirmed and gain the only NBIE from the original problem.

无网格方法仅仅需要节点信息，克服了有限元等传统数值方法对网格有较强依赖性的缺点，摆脱了网格的束缚，避免了大量的网格分划、复杂的网格生成及重新划分的工作，减少了因网格畸变而引起的困难，而且收敛快、精度高、易于实现和进行后处理工作。

A new SVM is presented in this paper to solve the approximately linear separable problem of pattern recognition:First,we transform the two convex hulls which are made up of the approximately separable training set to make them separable;Second,we can figure out a separating hyperplane by halving the nearest points method or maximal margin method;Then,we get the approximately linear SVM by solving the dual problem of maximal margin method.

对模式分类中的近似线性可分问题提出了一种新的近似线性支持向量机：先对近似线性分类中的训练集所形成的两类凸壳进行了相似变形，使变形后的凸壳线性可分，再用平分最近点和最大间隔法求出理想的分划超平面，然后再通过求解最大间隔法的对偶问题得到基于相似压缩的近似线性SVM。

First, the two convex hulls from the training set of approximate linear classification are similarly squeezed into the linearly separable ones, and based on the two similarly squeezed linearly separable convex hulls, an optimal separating hyperplane is figured out by using the method of halving the nearest points and the maximal margin method.

首先对近似线性分类中的训练集所形成的两类凸壳进行了相似压缩，使压缩后的凸壳线性可分；基于压缩后线性可分的凸壳，再用平分最近点和最大间隔法求出最优的分划超平面。

In Chapter 5, a new method with direct partitioned column updates of cholesky factorization for solving large scale sparse unconstrained optimization problems is proposed, which depends on a consistent partition of the columns and cholesky factorization of the Hessian matrix.

第5章基于稀疏Hesse阵的列的相容分划，并在其Cholesky分解的基础上建立了求解大型稀疏无约束优化问题的直接校正Cholesky因子算法。

Methods: Five patients with parkinsonism or dystonia were assigned to general anesthesia using an modified endotracheal tube.

本实验依照人体实验之相关规定进行，五位患有帕金森氏症或肌张力异常的病人接受神经立体定位手术。

If you can benefit from this book, it is our honour.

如果您能从本书获益，这将是我们的荣幸。