The operational cleavage between the US public health and medical care systems contributed to the country’s difficulty in containing community spread of COVID-19 in the pandemic’s first months. We ...

在Web应用的安全体系中，验证码（CAPTCHA）常被视为抵御自动化攻击的"第一道防线"。从简单的图片数字验证码到复杂的滑动拼图、行为验证，其核心目标是区分"人类用户"和"机器程序"，防止恶意攻击者通过脚本批量爆破登录、枚举用户接口、注册垃圾账号或滥用短信通道。然而，在真实的攻防对抗中，这看似坚固的防线却常常被攻破——某电商平台因验证码识别插件绕过导致百万用户信息泄露，某社交APP因短信接口滥用被 ...

Plant responses to light are multiple. Light is an energy source, converted to sugars by photosynthesis. It is also a signal sensed by specific photoreceptors for red, blue and UV-B radiation. Absence ...

The amygdala is part of the limbic system, which regulates emotional and behavioral responses. An amygdala hijack is a fight-or-flight response to stress. To better understand what an amygdala hijack ...