Forwarded from Solidot
运动或可减少不健康睡眠时间对寿命的负面影响
2023-04-03 12:23:00 by 繁星若尘
睡眠过少或过长都与寿命较短有关,但科学家们发现,体育活动可以抵消其中一些负面影响。研究包括了英国生物银行 92221 名年龄在 40 岁至 73 岁之间的成年人,他们在 2013 年至 2015 年期间佩戴了一周的加速度计腕带。每晚睡眠时间分为短(少于 6 小时)、正常( 6-8 小时)和长(超过 8 小时)。体育活动的总量被分为低、中、高。参与者的平均年龄为 62 岁,56% 为女性。在平均 7 年的随访中,3080 名参与者死亡,其中 1074 人死于心血管疾病,1871 人死于癌症。研究人员发现,在运动量大的人群中,睡眠时间与死亡风险无关。对于心血管疾病死亡,低运动量睡眠时间短的人有 69% 的风险增加,当运动量增加到中等或高运动量时,这种风险就消失了。就癌症死亡而言,睡眠时间长但运动量少的人的风险增加了 21%,而这种风险在适度或大量运动后消失。
http://www.ebiotrade.com/newsf/2023-3/20230331032600183.htm
#科学
2023-04-03 12:23:00 by 繁星若尘
睡眠过少或过长都与寿命较短有关,但科学家们发现,体育活动可以抵消其中一些负面影响。研究包括了英国生物银行 92221 名年龄在 40 岁至 73 岁之间的成年人,他们在 2013 年至 2015 年期间佩戴了一周的加速度计腕带。每晚睡眠时间分为短(少于 6 小时)、正常( 6-8 小时)和长(超过 8 小时)。体育活动的总量被分为低、中、高。参与者的平均年龄为 62 岁,56% 为女性。在平均 7 年的随访中,3080 名参与者死亡,其中 1074 人死于心血管疾病,1871 人死于癌症。研究人员发现,在运动量大的人群中,睡眠时间与死亡风险无关。对于心血管疾病死亡,低运动量睡眠时间短的人有 69% 的风险增加,当运动量增加到中等或高运动量时,这种风险就消失了。就癌症死亡而言,睡眠时间长但运动量少的人的风险增加了 21%,而这种风险在适度或大量运动后消失。
http://www.ebiotrade.com/newsf/2023-3/20230331032600183.htm
#科学
Forwarded from Hacker News
Optimizing Open Addressing (Score: 150+ in 10 hours)
Link: https://readhacker.news/s/5BEme
Comments: https://readhacker.news/c/5BEme
Link: https://readhacker.news/s/5BEme
Comments: https://readhacker.news/c/5BEme
thenumb.at
Optimizing Open Addressing
Your default hash table should be open-addressed, using Robin Hood linear probing with backward-shift deletion.
When prioritizing deterministic performance over memory efficiency, two-way chaining is also a good choice.
Code for this article may be found…
When prioritizing deterministic performance over memory efficiency, two-way chaining is also a good choice.
Code for this article may be found…
Forwarded from Hacker News (yahnc_bot)
Show HN: Ermine.ai – Record and transcribe speech, 100% client-side (WASM) https://www.ermine.ai/
www.ermine.ai
Ermine.ai | Local Audio Transcription
Transcribe audio from your device microphone using 100% local / client-side processing.
Forwarded from 图
✨️
Tags by Deepbooru:
#backpack #drinking #bag #hood #bag_charm #1girl #drinking_straw #english_text #deepbooru #jacket #shoulder_bag #charm_(object) #pink_bag #solo #headphones #school_bag #short_hair
Tags by Deepbooru:
#backpack #drinking #bag #hood #bag_charm #1girl #drinking_straw #english_text #deepbooru #jacket #shoulder_bag #charm_(object) #pink_bag #solo #headphones #school_bag #short_hair
Forwarded from Hacker News (yahnc_bot)
AMD and Jedec Are Collaborating on DDR5 MRDIMMs at 17,600 MT/S https://hothardware.com/news/ddr5-mrdimms-standardized-up-to-17600
HotHardware
AMD And JEDEC Are Collaborating On DDR5 MRDIMMs At A Blistering 17,600 MT/s
JEDEC has revealed a new standard that accesses two DDR5 memory ranks simultaneously to double bandwidth.
Forwarded from Hacker News (yahnc_bot)
Galaxy Simulation https://galaxym.ovh/
Forwarded from 每日沙雕墙 (投稿机屑人)
设备商:我们的路由器和嵌入式设备的存储空间一定要精打细算
程序员:嗨害害 你看我往U-boot里面加了什么?!
https://github.com/u-boot/u-boot/commit/a554ee7edee8e10b38c6899ad8556daf58ca3afe
程序员:嗨害害 你看我往U-boot里面加了什么?!
https://github.com/u-boot/u-boot/commit/a554ee7edee8e10b38c6899ad8556daf58ca3afe
🤯4🔥1
Forwarded from Hacker News (yahnc_bot)
RISC-V Bytes: Exploring a Custom ESP32 Bootloader https://danielmangum.com/posts/risc-v-bytes-exploring-custom-esp32-bootloader/
Danielmangum
RISC-V Bytes: Exploring a Custom ESP32 Bootloader
I recently acquired an ESP32-C3-DevKitC-02 module, and, as I tend to do, jumped right into reading about how the system boots and how the (pretty good!) tooling Espressif offers works. We have typically used QEMU in the RISC-V Bytes series, but getting our…
Forwarded from Hacker News (yahnc_bot)
ArmorPaint and ArmorLab: open-source alternative to Adobe Substance https://armorpaint.org/
armorpaint.org
ArmorPaint | 3D PBR Texture Painting
ArmorPaint is a software designed for physically-based texture painting.