《自然》（20221117出版）一周论文导读
Abstract:In many regions of the world， sparse data on key economic outcomes inhibit the development， targeting and evaluation of public policy. We demonstrate how advancements in satellite imagery and machine learning can help ameliorate these data and inference challenges. In the context of an expansion of the electrical grid across Uganda， we show how a combination of satellite imagery and computer vision can be used to develop local-level livelihood measurements appropriate for inferring the causal impact of electricity access on livelihoods. We then show how ML-based inference techniques deliver more reliable estimates of the causal impact of electrification than traditional alternatives when applied to these data. We estimate that grid access improves village-level asset wealth in rural Uganda by up to 0.15 standard deviations， more than doubling the growth rate during our study period relative to untreated areas. Our results provide country-scale evidence on the impact of grid-based infrastructure investment and our methods provide a low-cost， generalizable approach to future policy evaluation in data-sparse environments.
SARS-CoV-2？新冠病毒、SARS冠状病毒、SARS相关冠状病毒，它们之间是什么关系？
参考文献：[1]Zhou P et al., 2020. A pneumonia outbreak associated with a new coronavirus of probable bat origin. Nature, doi: https://doi.org/10.
中国有哪些月球样品？
中国有哪些月球样品?吴福元 刘强 田恒次。这是继苏联1976年Luna24采样后，人类时隔44年再次从月球返回样品。
K3技术报告揭秘：同样堆万亿参数，为什么老牌巨头崩了，Kimi 做成了？
在第三方评测机构 Artificial Analysis 的榜单上，它排全球第三，仅次于 Claude Fable 5 和 GPT-5.6 Sol，把其他所有模型甩在身后。
X-AgentRed：多服务个人智能体红队
个人智能体越来越多地通过工具连接网页与应用中的各类服务。当动作效果在跨服务路径上累积并相互叠加时，即便用户请求本身无害，也可能组合成非预期或有害结果。
《自然》（20220818出版）一周论文导读
Abstract:Pumps are transport mechanisms in which direct currents result from a cyclic evolution of the potential. As Thouless showed， the pumping process can have topological origins， when considering the motion of quantum particles in spatially and temporally periodic potentials. However， the periodic evolution that drives these pumps has always been assumed to be imparted from outside， as has been the case in the experimental systems studied so far. Here we report on an emergent mechanism for pumping in a quantum gas coupled to an optical resonator， where we observe a particle current without applying a periodic drive. The pumping potential experienced by the atoms is formed by the self-consistent cavity field interfering with the static laser field driving the atoms. Owing to dissipation， the cavity field evolves between its two quadratures， each corresponding to a different centrosymmetric crystal configuration. This self-oscillation results in a time-periodic potential analogous to that describing the transport of electrons in topological tight-binding models， such as the paradigmatic Rice–Mele pump. In the experiment， we directly follow the evolution by measuring the phase winding of the cavity field with respect to the driving field and observing the atomic motion in situ. The observed mechanism combines the dynamics of topological and open systems， and features characteristics of continuous dissipative time crystals.
SARS-CoV-2？新冠病毒、SARS冠状病毒、SARS相关冠状病毒，它们之间是什么关系？
Beta冠状病毒属又进一步可分为A、B、C、D四个系，其中lineageB只有唯一的一个病毒种——SARS-related coronavirus，即SARS相关冠状病毒。
理想狂砸150亿研发，连甩12篇顶会论文，把自动驾驶的“家底”都亮出来了
车东西6月8日消息，日前，计算机视觉与模式识别领域的顶级会议CVPR 2026召开，理想汽车12篇论文入选，同时还有多篇论文参与了现场讨论和发表。