映射

In this paper,some equivalence properties of one-valued selection under the set-valued mapping is introduced and give a sufficient and necessary condition of set-valued mapping being a metric projection.

介绍了集值映射的单值选择的几个等价性质，并给出了集值映射成为度量投影的一个充要条件。结果将度量投影情形推广到了集值度量投影情形

A mapping manager may manage assignment and mapping of logical sequencer addresses or pages to actual sequencers or frames of the system.

一种映射管理器可以管理逻辑定序器地址或页至系统的实际定序器或帧的分配和映射。

In this abstract setting, the scalars with which an element of a vector space can be multiplied need not be numbers.

一些引人注目的例子是集团的可逆线性映射或矩阵，和环的线性映射的向量空间。

With the increase of vibration frequency, the variation process of Jacobi matrix eigenvalue was calculated. According to the position of eigenvalue crossing the unit circle in the complex plane, the stability of fixed point of the map was discussed and the route from periodic motion to chaos via period-doubling bifurcation was received.

以振动频率为控制参数，计算得到映射Jacobi矩阵特征值的变化曲线，根据其穿越复平面单位圆的位置，分析了映射不动点的稳定性，获得了碰撞运动通过典型的倍周期分岔通向混沌的过程。

The mapping rules between heterogeneous databases were analysed and the mapping to PCEDM database from daily data table of oil wells was established according to the features of exploration-development database and the PCEDM database, furthermore the data in this table were transferred into PCEDM database based on SSIS.

最后，分析了异构数据库间的映射规则，根据勘探开发数据库和PCEDM数据库的的结构特点，建立了油井日数据表向PCEDM数据库中的映射，并基于SSIS将表中数据迁移到PCEDM数据库中。

In comparison with the computation point by point according to Hencky stress equations, determination of the stress in slip line field by use of the geometrical mapping is clear and simple.

文献〔1〕〔2〕〔3〕在Prager极点轨迹基础上提出了一种摆线映射法，这是滑移线场在口一，应力平面上的一种几何映射，其图形由两族相互正交的摆线构成。

Compared to the conventional interleaving SLM, this short-span interleaving SLM results in a very short time delay, requires very few register units for buffering, and can be easily implemented by hardware.

与传统的基于交织的选择性映射方案相比较，这种基于短跨度交织的选择性映射方案产生非常短的时间延迟，只需要很少的缓冲寄存器，且易于用硬件实现。

For continuous queries,a filter-based approach f-kNN and a clustering-based approach c-kNN are proposed,f-kNN significantly reduces the cost by setting filter for each node in the networks,c-kNN takes advantage of the spatial-temporal property of WSNs that the data sensed in two consecutive rounds and nearby nodes will not deviate too much,and utilizes clustering analysis to find the data storage nodes.

针对快照型kNN查询，提出了一种值空间映射方法h-kNN，其利用值关系保持的哈希函数，将值相近的数据存储在相同或相邻的节点，以便查询时对查询值也采用同样映射后在小范围内搜寻即可获得结果。

In view of the performance of the spreading sequences for spread～spectrum communication system, the performances on auto～correlation, cross～correlation, even and odd cross～correlation, mean square root of auto～correlation's side～lobe, mean square root of cross～correlation and balance of the new sequences were analyzed.

对一种新型的渐进理想的混沌映射模式，从扩频通信对扩频序列的要求出发，详细分析了该映射产生的混沌序列的自相关、互相关特性，偶互相关、奇互相关特性，以及自相关旁瓣均方根\，互相关均方根和平衡性。

Stability and local bifurcations of the fixed point of periodic impact are analyzed.

建立了两自由度含间隙振动系统对称周期碰撞运动的Poincar啨映射方程，讨论了该映射不动点的稳定性与局部分岔。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。