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The challenges facing precise prevention and control stem from the need to innovate the design of health codes.

This article raises questions about the phenomenon of "excessive measures" (often referred to as "adding layers on top") currently observed in epidemic prevention efforts. It argues that simply increasing the number of health codes does not reflect precise control measures; instead, it creates administrative obstacles and wastes resources. The author points out that traditional health codes, which are binary (green/red), fail to quantify risk levels. Consequently, the article proposes establishing a dynamic infection probability model based on spatio-temporal trajectories and contact density, known as a "Safety Score" system. This system calculates the degree of spatio-temporal overlap between an individual and confirmed cases, and recursively updates each person's infection probability by incorporating nucleic acid test results, thereby replacing static administrative codes. This quantification mechanism enables precise epidemic prevention: individuals with low risk can move freely, while those with high risk automatically trigger enhanced monitoring and nucleic acid screening. Furthermore, multiple negative test results can significantly lower an individual's risk score. The author emphasizes that while strict epidemic prevention is necessary, AI and big data should be leveraged to improve execution efficiency, replacing simple and crude "one-size-fits-all" policies to achieve scientific control at a lower social cost.

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AI/ML COVID-19 China Health Code Precision Control Shanghai

Install Windows 11 on a Vultr cloud machine ★

This article provides a detailed guide on setting up a Windows 11 cloud PC from scratch on a Vultr server. First, use the DISM tool to mount the `install.wim` image and inject the necessary drivers, then commit the changes and unmount the image. Next, use disk management tools to shrink the C drive and create a new E drive partition, then extract the Windows 11 system files to this partition. The core step involves using the `bcdedit` command to configure a new boot entry, setting the system boot path and recovery options to ensure that Windows 11 boots correctly after a reboot. After rebooting, connect via VNC to complete the initial setup (OOBE). During this process, be sure to select an offline account and set a strong password to avoid restrictions on Remote Desktop. Once you reach the desktop, enable the Remote Desktop service to connect via RDP. Finally, it is recommended to delete the old system partition, change the default port 3389 for remote connections to enhance security, and immediately create a system snapshot. This snapshot can serve as a template to quickly and batch-deploy independent Windows 11 cloud PCs for family or friends, enabling access from any device anytime, anywhere.

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Bcdedit Cloud Cloud PC DISM PowerShell Vultr Windows Windows 11 Windows Server