directed distance

On Some Fixed Value Theorems of Directed Distance for Conic Sections

二次曲线外切多角形中有向距离的定值定理

Longer distance constraints are determined by site-directed spin labelling electron paramagnetic resonance, but current labelling strategies still constitute some limitation.

直接位点标记的旋转电子顺磁共振可以得到更长的距离约束数据，但是目前的标记策略仍然具有局限性。

Research and Development of Distance Learning Platform for Post Study for Free Normal Students Directed by EDR

EDR指导下的免费师范生职后远程学习平台的研发

The property and computing method of Hausdorff distance is discussed. The using of directed Hausdorff distance to match graphics in clutter background is verified. An algorithm is used to compute the Voronoi surface.

讨论了Hausdorff距离的性质以及计算方法，指出了在复杂的背景图像中，利用有向Hausdorff距离进行图形符号匹配的适用性，并且提出了一个计算Voronoi曲面的具体算法。

Conventional education has being influenced by independent study and open learning and self-directed learning from distance education, so that new accident and challenge are coming to colleging.

分散学习、开放性学习和自主性学习的现代远程教育正在影响着传统大学教育，给大学教育的发展带来了机遇和挑战。