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Scientists develop new Covid strain with 80 pc kill rate in mice_我的网站

一 |     8月24日消息，Hardware Unboxed近日使用慢动作摄像机对AMD FSR 4帧生成技术进行了帧节奏测试，结果显示FSR 4存在严重的画面抖动问题。    Washington, Oct 18 (UNI) Scientists at Boston University has developed a new Covid-19 strain which resulted in an 80 per cent kill rate in mice.

The variant, a combination of Omicron and the original virus in Wuhan, killed 80 per cent of the mice infected with it, the university said. When mice were only exposed to Omicron, they experienced mild symptoms, the New York Post said.

A team of scientists from Florida and Boston at the school’s National Emerging Infectious Diseases Laboratories conducted the research.

They extracted the spike protein from Omicron and attached it with the strain first detected at the onset of the pandemic that began in Wuhan, China. They then documented how the mice reacted to the hybrid strain, according to the New York Post report.

“In…mice, while Omicron causes mild, non-fatal infection, the Omicron S-carrying virus inflicts severe disease with a mortality rate of 80 percent,” they wrote in a research paper.

The new strain has five times more infectious virus particles than the Omicron variant, researchers said.

UNI PRT。     帧生成技术的原理是在两个真实渲染帧之间插入一个AI生成的中间帧，从而把帧率翻倍，比如基础帧率60fps，开启帧生成后输出120fps。    但这里有一个关键前提，真实帧和生成帧必须均匀交替显示，每帧在屏幕上停留的时间应该大致相同，玩家才会感受到流畅的120fps。如果两帧的显示时长不一致，画面就会出现肉眼可见的卡顿和抖动，帧率数字再高也没有意义。

二 |     Hardware Unboxed用慢动作摄像机逐帧拍摄后发现，RX 9070 XT在开启FSR 4帧生成时，真实帧和生成帧的显示时长严重不均，一帧在屏幕上停留的时间大约是相邻帧的四倍。这意味着生成帧几乎一闪而过，玩家实际观感更接近60fps而不是120fps。

三 |     测试覆盖了多款游戏，没有一款能做到均匀的帧节奏，其中《战神：诸神黄昏》《赛博朋克2077》《四海兄弟：故乡》《刺客信条：黑旗重制版》《生化危机安魂曲》《心灵杀手2》和《红色沙漠》表现最差，《无主之地4》和《乐高蝙蝠侠：黑暗骑士遗产》情况稍好但问题依然存在。    开启垂直同步也无法解决，Hardware Unboxed在部分游戏中测试了垂直同步配合帧生成的方案，帧节奏问题没有任何改善。     而且这个问题似乎并非FSR 4独有，据报道，AMD从FSR 3引入帧生成技术时就存在同样的帧节奏缺陷，至今没有修复。    

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Published on:10:19:05