Some analyse chemical bonds to compare them against genuine honey samples. Others analyse isotopes to determine where a product likely originated.
A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
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Жители Санкт-Петербурга устроили «крысогон»17:52
广东省中医院党委书记史俏蓉介绍，“师带徒”是中医药人才培养的重要方式。自2001年起，广东省中医院率先开启师承全国名老中医的新举措，创造了“跨地区拜师”“集体带、带集体”“一代带二代”“脱产跟师”等模式。至今共有205名“师带徒”指导老师，其中国医大师47名、全国名中医25名。