这些志愿者，主要由Sun Health基金会和Banner Health协调，2018年的数据显示，两家医院的志愿者累计捐赠了177030小时的服务时间，是Banner Health在亚利桑那州18家医院中，志愿者数量和服务时间最多的。
Recall that a barycentric coordinate system is given with respect to a -dimensional simplex, where is no larger than the dimensional space. Given a set of scattered points, it’s possible to create a tessellation of the space by forming simplices from the points, such that any input point that lies within the convex hull of the scattered set can be expressed in terms of the enclosing simplex and its corresponding barycentric coordinates2. This can be understood as a kind of triangulated irregular network (TIN).
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