Real image compression (JPEG, PNG) uses different techniques (DCT, entropy coding), but quadtrees capture the same principle: spend your bits where the detail is, not uniformly across the whole image.
Volatility and unusual structure at Stamford Bridge leave club’s young manager with a big test to rebuild like his rival has at Arsenal
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Other companies are also looking skywards - to make everything from pharmaceuticals to artificial tissues.
2025 年度，我们将7065 家入库企业划分为44 个一级行业。其中，信息传输、软件和信息技术服务业研发投入（4938.65 亿元）大幅领跑；消费电子及电气业、汽车制造业、通信传输设备业、建筑业这四个行业的研发投入规模都在2000 亿元以上。