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    照明系统设计(动态规划)- UVA 11400

    You are given the task to design a lighting system for a huge conference hall. After doing a lot of calculation and sketching, you have figured out the requirements for an energy-efficient design that can properly illuminate the entire hall. According to your design, you need lamps of n different power ratings. For some strange current regulation method, all the lamps need to be fed with the same amount of current. So, each category of lamp has a corresponding voltage rating. Now, you know the number of lamps and cost of every single unit of lamp for each category. But the problem is, you are to buy equivalent voltage sources for all the lamp categories. You can buy a single voltage source for each category (Each source is capable of supplying to infinite number of lamps of its voltage rating.) and complete the design.

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    清华博士用几个小灯泡骗过红外识别,首次让红外检测性能直降34% |AAAI2021

    ---- 新智元报道   作者:朱小佩 编辑:好困 【新智元导读】众所周知,打印一张图揣身上就能骗过图像识别,那你知道如何才能骗过红外识别么? 在疫情期间,红外行人识别系统被广泛应用。 这得益于热红外识别的系统的两个重要的优势: 1. 对于温度敏感,红外图像的成像利用了物体的热辐射,所以可以反映出物体的温度,这一特性对于人体的非接触式测温具有重要的应用。 2. 红外成像具有一定的「透视」特性,即使人体被一些衣物遮挡,但是热辐射依然可以透过衣物被接收器感知到,所以可以透过遮挡进行成像。 尽管目前红外行

    02

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