二、科室迭代：两家医院，如何跟上老人需求？Sun City的核心医疗力量，就是Banner Boswell和Banner Del E. Webb两家医院。它们的科室和服务，从来不是一成不变的，而是跟着老年人口的需求、技术的进步，从基础到专科、从单一到综合，慢慢迭代升级。
Annabel RackhamCulture reporter，这一点在旺商聊官方下载中也有详细论述
，这一点在51吃瓜中也有详细论述
Another way to look at our threshold matrix is as a kind of probability matrix. Instead of offsetting the input pixel by the value given in the threshold matrix, we can instead use the value to sample from the cumulative probability of possible candidate colours, where each colour is assigned a probability or weight . Each colour’s weight represents it’s proportional contribution to the input colour. Colours with greater weight are then more likely to be picked for a given pixel and vice-versa, such that the local average for a given region should converge to that of the original input value. We can call this the N-candidate approach to palette dithering.
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