t*******n 发帖数: 4445 | 1 前两天看到一篇(正经的天体力学)文章,越看越觉得所谓的Dyson Shell/Ring是没戏。文
章解释由于太阳系的混沌动力学,也会不断有小行星从 Kuiper Belt 和Astroid Belt跑
到太阳系内部来。
所以要建起个结构把太阳围起来,先得把有嫌疑的空间都腾空了,再装上一个Ringworld
式的防御系统避免小行星的碰撞。腾空Astroid Belt 都几乎是不可能的,这Kuiper
Belt就更远了......
Annual Review of Astronomy and Astrophysics
Sep 2001, Vol. 39, pp. 581-631
Title: CHAOS IN THE SOLAR SYSTEM1
Authors: Myron Lecar, Fred A. Franklin, and Matthew J. Holman
(Harvard-Smithsonian Center for Astrophysics), Norman W. Murray (Canadian
Institute for Theoretical Astrophysics) |
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b*****n 发帖数: 618 | 2 前段时间骑驴找马终于告一段落,感觉本版的技术贴和面经贴帮助非常之大,也非常感
谢共享资源的各路大牛。希望提供一些信息和个人感受给还在找工的童鞋,有帮助最好
,但是毕竟本人资历尚浅,如果有不对的地方也请轻喷。
背景:
ms毕业不到两年
主要申请公司:
offer:facebook,google,uber,palantir,sumo logic,walmartlab,yahoo,
amazon,apple
reject:dropbox
主要几个包裹:
U: 145k base + 25k股 RSU
F: 150k base + 40k signon + 10%bonus + 260k美元 RSU
W: 165k base + 50k signon + 20%bonus + 35k美元 RSU每年(
这个略复杂,相当于每年35k美元RSU的refresh,但是每次refresh分四年给)
再上各个公司的面经和感受:
Yahoo:
最早面的公司,面的是Flurry Team,Yah... 阅读全帖 |
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f*******r 发帖数: 976 | 3 恭喜,都是好包袱!
关键字: 面经
发信站: BBS 未名空间站 (Sat Jun 13 17:27:31 2015, 美东)
前段时间骑驴找马终于告一段落,感觉本版的技术贴和面经贴帮助非常之大,也非常感
谢共享资源的各路大牛。希望提供一些信息和个人感受给还在找工的童鞋,有帮助最好
,但是毕竟本人资历尚浅,如果有不对的地方也请轻喷。
背景:
ms毕业不到两年
主要申请公司:
offer:facebook,google,uber,palantir,sumo logic,walmartlab,yahoo,
amazon,apple
reject:dropbox
主要几个包裹:
U: 145k base + 25k股 RSU
F: 150k base + 40k signon + 10%bonus + 260k美元 RSU
W: 165k base + 50k signon + 20%bonus + 35k美元 RSU每年(
这个略复杂,相当于每年35k美元RSU的refres... 阅读全帖 |
|
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s*****t 发帖数: 1994 | 5 Asteroid 1998 KY26
Credit: NASA, JPL, image courtesy of Steve Ostro
Explanation: A day is just under 11 minutes long on 1998 KY26, a 30 meter wide,
fast-spinning, water-rich asteroid. This computer simulated view of its lumpy surface has a
resolution of about 3 meters and is based on radar and optical observations (click on the
image for a series of surface views). The observations were made shortly after the discovery
of the diminutive world which passed within about 800,000 kilom |
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s*****t 发帖数: 1994 | 6 Asteroid 1998 KY26
Credit: NASA, JPL, image courtesy of Steve Ostro
Explanation: A day is just under 11 minutes long on 1998 KY26, a 30 meter wide,
fast-spinning, water-rich asteroid. This computer simulated view of its lumpy surface has a
resolution of about 3 meters and is based on radar and optical observations (click on the
image for a series of surface views). The observations were made shortly after the discovery
of the diminutive world which passed within about 800,000 kilom |
|