f**d
发帖数: 768 | 1 这是一本计算神经科学的优秀著作，全文拷贝这里（图和公式缺），有兴趣的同学可以
阅读
如需要，我可以分享PDF文件（－－仅供个人学习，无商业用途）
From Computer to Brain
William W. Lytton
From Computer to Brain
Foundations of Computational Neuroscience
Springer
William W. Lytton, M.D.
Associate Professor, State University of New York, Downstato, Brooklyn, NY
Visiting Associate Professor, University of Wisconsin, Madison
Visiting Associate Professor, Polytechnic University, Brooklyn, NY
Staff Neurologist., Kings County Hospital, Brooklyn, NY
In From Computer to Brain: ... 阅读全帖 |
|
i**T
发帖数: 3441 | 2 我刚刚学习了一下英语，发现你的解释是从金山词霸来的。
韦氏词典的解释：
http://www.merriam-webster.com/dictionary/halt
Main Entry: 4 halt
Function: verb
Date: 1656
intransitive verb
1 : to cease marching or journeying
2 : discontinue, terminate transitive
verb 1 : to bring to a stop
2 : to cause the discontinuance of : end
Wiki词典：
http://en.wiktionary.org/wiki/halt
to halt (third-person singular simple present halts, present participle
h |
|
t**a
发帖数: 255 | 3 买了房子后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
Aeration: 也就是打孔透气。用aerator把地里打一个个深一点的空，让根部呼吸。
以上三项自己做的话要半天，请人做大概$200-400。
施药防crabgrass+施肥
详情参见http://www.mitbbs.com/bbsann2/e... 阅读全帖 |
|
t**a
发帖数: 255 | 4 买了房子后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
Aeration: 也就是打孔透气。用aerator把地里打一个个深一点的空，让根部呼吸。
以上三项自己做的话要半天，请人做大概$200-400。
施药防crabgrass+施肥
详情参见 Gardening精华区[合集] 科普一下crabgrass... 阅读全帖 |
|
发帖数: 1 | 5 【 以下文字转载自 NewJersey 讨论区 】
发信人: tuna (一直很安静), 信区: NewJersey
标 题: 手把手教你如何打理草坪
发信站: BBS 未名空间站 (Mon Mar 16 15:53:52 2015, 美东)
成为为草民后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
A... 阅读全帖 |
|
z**k
发帖数: 945 | 6 [zz] 草坪的打理
买了房子后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
Aeration: 也就是打孔透气。用aerator把地里打一个个深一点的空，让根部呼吸。
以上三项自己做的话要半天，请人做大概$200-400。
施药防crabgrass+施肥
详情参见http://www.mitbbs.co... 阅读全帖 |
|
t**a
发帖数: 255 | 7 成为为草民后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
Aeration: 也就是打孔透气。用aerator把地里打一个个深一点的空，让根部呼吸。
以上三项自己做的话要半天，请人做大概$200-400。
施药防crabgrass+施肥
详情参见http://www.mitbbs.com/bbsann2/... 阅读全帖 |
|
s**********n
发帖数: 2343 | 8 【 以下文字转载自 Living 讨论区 】
发信人: tuna (一直很安静), 信区: Living
标 题: 手把手教你如何打理草坪
发信站: BBS 未名空间站 (Mon Mar 16 15:16:29 2015, 美东)
成为为草民后用过专业的园艺公司，后来也自己动手打理。如果你家草坪不是很大大，
要求不是很高（在小区中等偏上），完全可以DIY。这里给各位新买了房子打算自己打
理草坪的人说说我的入门级经验。以下适用于东部地区cool season grasses (KBG,
feacus etc.) 并以新泽西为例。往南往北的可以酌情调整时间。
三月
Spring clean up:春天刚回暖，草地雪化完以后就可以clean up了， 主要就是把枯枝
落叶清一清。
dethatching：如果草坪有些年头了，经年的枯草会结成一层厚厚的thatch，超过0.
5inch就全 不利于根部透气肥料渗透。这就需要用专门的dethatch耙子（Thatching
Rake）把草坪梳一遍，把thatch层打散，并去掉一些枯草。地太大的话最好租电动的拉
着耙子，省时省力。
Aeratio... 阅读全帖 |
|
t******l
发帖数: 10908 | 9 但这方面的一个在教育学上的障碍就是，我们那些希尔伯特无限神教，在中小学教育的
时候，就不愿意翻译成现代智人的人话。
一个例子就是质数无限性的欧几里德证明。。。这玩意儿翻译成智人幼儿园大班的人话
就应该这么说：
小盆友们我们来讨论一下聪明自动质数嘣嘣器的 halting problem 好不好？也就是说
，假设有一个聪明自动质数嘣字机，按顺序一个一个嘣质数出来，现在的问题是这个质
数嘣嘣机会不会哪天就自动 halt 在那里不嘣质数出来了。
欧几里德对这个证明就是，嘣嘣机嘣出前 N 个质数后，检查从此处到所有嘣出来的质
数的乘积的范围内有没有新的质数。
如果有，那就 recursive 这个过程，把新的质数考虑进去继续查，不 halt。
如果没有，那所有前 N 个质数乘积再加上一就是个质数，这样还得把那个所有质数乘
积加一的那个新质数加进去，然后 recursive 这个过程继续查，不 halt。
由此证明聪明自动质数嘣嘣机就永远不会 halt。。。这么跟小朋友说人话（halting
problem），就不用再纠结希尔伯特教的无限之词不是？。。。
：这种将来总有一天主要得靠电证来辅助肉证... 阅读全帖 |
|
c****i
发帖数: 323 | 10 查到了：A trading halt occurs in the U.S. when a stock exchange stops
trading on a specific security for a certain time period. The halt usually
lasts for one hour, but is not limited to that. Trading halts occur during
the trading day (intraday), while a trading delay occurs at the beginning of
the trading day (delayed opening). [1]
Trading halts usually occur when a publicly-traded company is going to
release significant news about itself. The halt in trading for the affected
security gives invest... 阅读全帖 |
|
C*I
发帖数: 4736 | 11 这是一个minutes by minutes story, 很有意思，有兴趣的可以看一看,长点见识。说
不定这事什么时候你真能遇上。
其中说了一个小伙子，在田纳西一个社区学院读书，回到土耳其去看他的新婚妻子，结
果就回不来了。他的妻子是乌兹别克斯坦人。 昨天突然听到消息说法官临时限制了总
统令后，就又赶紧花了1000多块钱买了机票折回来了。
WASHINGTON (AP) — The Latest on the reaction to a court order blocking U.S.
President Donald Trump's ban on travelers and immigrants from seven
predominantly Muslim countries (all times Eastern):
1:30 p.m.
The Justice Department has appealed a judge's order blocking his travel ban
at the 9th U.S. Circuit Court of Appeals in Sa... 阅读全帖 |
|
w********2
发帖数: 632 | 12 F-86 in Korea
Last revised October 30, 1999
On June 25, 1950, the forces of North Korea invaded the South. The South
Korean army was poorly organized and badly led, and the initial North Korean
advance was quite rapid. The United Nations Security Council immediately
met in emergency session and ordered the North Koreans to cease their
invasion and withdraw from the South, but these demands were ignored. On
June 27, President Harry Truman authorized American forces to oppose the
invasion, and Gen... 阅读全帖 |
|
c**u
发帖数: 2230 | 13 Halted for code T1
Trade Halt Code Trade Halt Description
T1 Halt - News Pending
Trading is halted pending the release of material news. |
|
x**8
发帖数: 4844 | 14 著名而简单易行的scotts家的steps 1、2、3、4四步草地管理法适合不介意大量使用化
肥而且状况已经完美的草地。如果你家草地已经恶化，比如已经出现草过稀、杂草过多
、害虫过多，那么这个四步法是不灵的。这个系列的目的是解析草地治理的各个环节，
帮助大家从根本上学会处理草地的各种问题。
上一次说了冷季草地浇水篇，链接于此：
【一年之计】冷季草地系列1： 浇水篇 - sprinkler
http://www.mitbbs.com/article_t/gardening/32236853.html
这一篇咱们说除草。这个俺以前也发过贴，这次补充了来自网络/网友的更多信息，供
大家参考。
这里的方法主要适合北方冷季草里常见的Kentucky Blue Grass和大多数fescues。fine
fescue比较细嫩，用药量要酌减。
一、常见杂草种类
杂草一般粗分为寬叶草和细叶草。寬叶草顾名思义就是叶子较宽的草，常见的包括
clover, 蒲公英等，款野草用常见的post-emergent herbicide药很容易除。
clover(四叶草）
蒲公英
细叶杂草的典型代表是crabgras... 阅读全帖 |
|
l****z
发帖数: 29846 | 15 Tehran can continue to enrich uranium at 10,000 working centrifuges.
Updated Nov. 24, 2013 10:18 p.m. ET
President Obama is hailing a weekend accord that he says has "halted the
progress of the Iranian nuclear program," and we devoutly wish this were
true. The reality is that the agreement in Geneva with five Western nations
takes Iran a giant step closer to becoming a de facto nuclear power.
Start with the fact that this "interim" accord fails to meet the terms of
several United Nations resolut... 阅读全帖 |
|
b*****d
发帖数: 61690 | 16 Democratic attorneys general across the country have threatened to sue
President Trump over his decision Tuesday to rescind the Deferred Action for
Childhood Arrivals (DACA) program, opening another front in the growing
legal war between blue states and the Republican administration.
In public statements and letters to the Trump administration, 20 attorneys
general urged Trump not to follow through on threats to end the five-year-
old program, which allows those brought into the country illegall... 阅读全帖 |
|
w*********7
发帖数: 2883 | 17 除了他自己涨了一点， 其他的都跌破像。。。LOL
LOS ANGELES (MarketWatch) — Shares of Facebook Inc. and other social-media
companies may be active Friday evening coming off Facebook’s trading debut
in a $16 billion initial public offering during the day session.
Facebook shares FB +2.21% ahead of the late trading session were up 5.6% at
$40.11. After a Nasdaq delay of about 30 minutes in the anticipated start
time, Facebook’s shares opened at $42.05 from their IPO price of $38 a
share.
Click to Play
Facebook's new mi... 阅读全帖 |
|
|
a******m
发帖数: 3422 | 19 听了好多年的音乐了，现在，常发现能被一些不见经传的曲子打动，开始了一条自我挖掘的小道，这首曲子也是。。。
当时，Nine million bicycles in Beijing已经是家喻户晓，开始还以为又是好莱坞东方文化的噱头, 我听到却是沧桑的歌词和无奈的慨叹，特别是那句"There are six billion people in the w-o-r-l-d", 那一个字，w-o-r-l-d，是婉转低回的忧伤，随着大提琴间奏的延伸，宣泄得更加浓郁。。。Katie Melua那一双深凹的大眼睛，好似洞穿了人世间的悲欢离愁，每一句结尾处都唱得那么的无助，像烟一样升起，又消失在背景里，这个年轻的小姑娘，已经把人生的情感演绎得那么感人，却又举重若轻。
我这个人有个习惯，喜欢就会追根索源，一问究竟。原来，Katie也算是身世波折，成长之路辗转于几个战火纷争之地， 出生于格鲁吉亚，8岁时搬到北爱尔兰，5岁时竟然要用木桶提水到五楼的家中。。。本是东正教，却读于天主教学校，如今拥有着三个国家的国籍，她喜欢刺激的运动(boyfriend also)，2007居然还参演了一部动作恐怖片---Grin... 阅读全帖 |
|
d***a
发帖数: 13752 | 20 https://en.m.wikipedia.org/wiki/ZeniMax_v._Oculus
The jury trial completed on February 2, 2017, with the jury finding that
Luckey had violated the NDA he had with ZeniMax, and awarding $500 million
to ZeniMax.[15][16] However, the jury found that Oculus, Facebook, Luckey,
Iribe, and Carmack did not misappropriate or steal trade secrets,[15][16][17
] though ZeniMax continued to publicly assert otherwise.[18] Oculus will
have to pay $200 million for breaking the non-disclosure agreement, and
addit... 阅读全帖 |
|
s*********y
发帖数: 209 | 21 SEC puts in new 'circuit breaker' rules
By MARCY GORDON (AP) – 2 hours ago
WASHINGTON — Federal regulators on Thursday put in place new rules aimed at preventing a repeat of last month's harrowing "flash crash" in the stock market.
Members of the Securities and Exchange Commission approved the rules, which call for U.S. stock exchanges to briefly halt trading of some stocks that make big swings.
The exchanges will start putting the trading breaks into effect as early as Friday for six months. Th... 阅读全帖 |
|
e*n
发帖数: 1511 | 22 SEC puts in new 'circuit breaker' rules
By MARCY GORDON (AP) – 2 hours ago
WASHINGTON — Federal regulators on Thursday put in place new rules aimed at
preventing a repeat of last month's harrowing "flash crash" in the stock
market.
Members of the Securities and Exchange Commission approved the rules, which
call for U.S. stock exchanges to briefly halt trading of some stocks that
make big swings.
The exchanges will start putting the trading breaks into effect as early as
Friday for six months. Th... 阅读全帖 |
|
y*****l
发帖数: 5997 | 23 既限制大盘也限制个股。大盘采用10%，20%，30%共3级熔断机制。
个股是5分钟内涨跌不能超过10%，天朝是当天10%，不一样。
Circuit Breakers and Other Market Volatility Procedures
The major securities and futures exchanges have procedures for coordinated
market-wide trading halts if a severe market price decline reaches levels
that may exhaust market liquidity. These procedures, known as circuit
breakers, may halt trading temporarily or, under extreme circumstances,
close the markets before the normal close of the trading session.
The circuit breakers ... 阅读全帖 |
|
P*****t
发帖数: 4978 | 24 好像没有对中国领导层的评价，就有帮助朝鲜伊朗发展武器的cable。
China pressed over Iran and North Korea's nuclear trade
Embassy cables show US urging Beijing to stop shipments amid claims Chinese
firms may be supplying materials
The US insisted that China act "urgently" to halt a transshipment of
ballistic missile components from North Korea to Iran via Beijing and
complained that at least 10 similar missile-related deliveries had been
allowed to proceed unhindered.
The US also accused Chinese firms in May this year of suppl... 阅读全帖 |
|
s********n
发帖数: 26222 | 25 我把肥猫的新闻贴出来
4 EU states have asked Iran to suspend plan to cut oil to Europe'
TEHRAN, Feb. 5 (MNA) – Ambassadors of a number of European Union countries
have asked the Iranian parliament to suspend the plan calling for a halt to
Iran’s oil exports to certain EU states, according to MP Nasser Soudani.
The EU formally imposed an oil embargo on Iran and agreed to a freeze on the
assets of the Central Bank of Iran on January 23 , but existing contracts
will be honored until July 1.
It was announced o... 阅读全帖 |
|
D**S
发帖数: 24887 | 26 China's shadow banking system is out of control and under mounting stress as
borrowers struggle to roll over short-term debts, Fitch Ratings has warned.
Fitch warned that wealth products worth $2 trillion of lending are in
reality a "hidden second balance sheet" for banks, allowing them to
circumvent loan curbs and dodge efforts by regulators to halt the excesses.
By Ambrose Evans-Pritchard
The agency said the scale of credit was so extreme that the country would
find it very hard to grow its wa... 阅读全帖 |
|
w********9
发帖数: 8613 | 27 这是Shorter Oxford American English Dictionary第五版列出的与德语或者日耳曼语
相关的英语词根或词汇。
-at, suffix2. + -dom, suffix. + -ed, suffix1. + -ed, suffix2. + -en, suffix1
+ -en, suffix2 + -en, suffix5 + -en, suffix6 + -er, suffix1. + -er, suffix3
. + -er, suffix5. + -est, suffix1. + -est, suffix2. + -et, suffix2. + -eth,
suffix1. + -hood, suffix. + -ing, suffix1. + -ing, suffix3. + -ish, suffix1.
+ -kin, suffix. + -le, suffix1 + -le, suffix3 + -less, suffix. + -ling,
suffix1. + -ling, suffix2 + -ly, suffix1. + -ly, s... 阅读全帖 |
|
p****s
发帖数: 3184 | 28 为清楚起见，按照美陆军的官方战史
http://www.history.army.mil/books/korea/truce/ch17.htm
393-396页，对3月底哥伦比亚营守卫的老秃山头的战斗过程的大致描述如下：
战斗前1天美7师31团的部署：
从左到右是xx山头、老秃山头、猪排山头，从左到右是第2、第4 (哥伦比亚营）、第3
营。1营是堵2,4,3营阵地的缺口的。
3月23日晚，志愿军423团占领老秃山头表面阵地，哥伦比亚营死伤20%，剩余人员被压
入地下坑道地堡。
3月24日晨到25日晚，美陆军31团1营的A,B,C三个连反攻老秃山头表面阵地，死伤失踪
300人但未能夺回山头表面阵地。联系美空军要用航弹于26日晨进行大规模轰炸。
美空军26日晨轰炸前，25日晚26日晨的某个时候，美军认为志愿军为防空袭而放弃了老
秃山头表面阵地（美军没发现老秃山头表面阵地有动静），被压入老秃山头地下坑道地
堡的哥伦比亚人借此机会于26日晨逃回美军当时的控制线(UNC)。
原文：
The Old Baldy-Porkchop area was held by the 31st Infantry... 阅读全帖 |
|
h*h
发帖数: 27852 | 29 http://www.yinwang.org/blog-cn/2015/10/18/turing
图灵的光环
仿佛全世界的人都知道，图灵（Alan Turing）是个天才，是他创造了计算机科学，是
他破解了德国纳粹的Enigma密码。由于他的杰出贡献，计算机科学的最高荣誉，被叫做
“图灵奖”。然而根据自己一直以来对图灵机等计算模型的看法，加上一些历史资料，
我发现图灵本人的实际成就，相对于他所受到的崇拜，其实相差甚远。
由于二战以来各国政府对于当时谍报工作的保密措施造成的事实混淆，再加上图灵的不
幸生世所引来的同情，图灵这个名字似乎拥有了一种扑朔迷离的光环。人们把很多本来
不是图灵作出的贡献归结在他身上，把本来很平常的贡献过分地夸大。图灵的光环，掩
盖了许多对这些领域做出过更加重要贡献的人。
图灵传
2012年，在图灵诞辰一百周年的时候，人们风风火火的召开各种大会，纪念这位“计算
机之父”，很多媒体也添油加醋地宣传他的丰功伟绩。还有个叫Andrew Hodges的人，
抓住这个时机推销自己写的一本传记，叫做《Alan Turing: The Enigma》。这本书红
极一时，后来还被改... 阅读全帖 |
|
s******r
发帖数: 5309 | 30 Too big to sanction? U.S. struggles with punishing large Russian businesses.
Oleg Deripaska and the companies he controls were hit with U.S. sanctions in
April, leading to a spike in global aluminum prices and an outcry from
manufacturers and foreign governments. (Vladimir Smirnov/TASS/Getty Images)
By Jeanne Whalen
, Global business reporter
John Hudson
, Reporter
August 26 at 9:19 PM
When the Treasury Department imposed tough sanctions on Russian oligarch
Oleg Deripaska and his companies in Ap... 阅读全帖 |
|
f******t
发帖数: 19544 | 31 第一站：7%, -206.80, 2747.42
第二站：13%, -384.05, 2570.17
从上一个交易日收盘价算，周五美股收2954.22点。
At the start of each day, the NYSE sets three circuit breaker levels at
levels of 7% (Level 1), 13% (Level 2) and 20% (Level 3). These thresholds
are the percentage drops in value that the S&P 500 Index would have to
suffer in order for a trading halt to occur. Base price levels for which
these thresholds will be applied are calculated daily based on the preceding
trading day’s closing value of the S&P 500. Depending o... 阅读全帖 |
|
d*********o
发帖数: 6388 | 32 https://www.nbcnewyork.com/news/local/all-flights-to-new-york-area-airports-
halted/2337853/
All Flights to New York-Area Airports Halted
The FAA halted all flights to New York-area airports Saturday afternoon due
to "staffing issues" at the New York air route traffic control center.
NBC News reported that the closure may be related to a COVID-19 case, and
that an FAA statement was expected soon.
"DUE TO STAFFING ISSUES AT ZNY, PLEASE STOP ALL DEPARTURES TO
AIRPORTS WITHIN ZNY. THIS INCLUDES KJF... 阅读全帖 |
|
s******n
发帖数: 518 | 33 【 以下文字转载自 History 讨论区 】
发信人: shaodian (有熊), 信区: History
标 题: 美国生物实验室泄露
发信站: BBS 未名空间站 (Sun Mar 22 15:25:05 2020, 美东)
Google翻译一次只能3900字符。
https://www.usatoday.com/story/news/2015/05/28/biolabs-pathogens-location-
incidents/26587505/
Investigation reveals hundreds of accidents, safety violations and near
misses put people at risk
Alison Young and Nick Penzenstadler, USA TODAY
Vials of bioterror bacteria have gone missing. Lab mice infected with deadly
viruses have escaped, and wild rodents have b... 阅读全帖 |
|
k**f
发帖数: 301 | 34 【 以下文字转载自 WaterWorld 讨论区 】
发信人: kcuf (KCUF), 信区: WaterWorld
标 题: 主张禁枪的，进来看，事实说话。
发信站: BBS 未名空间站 (Sun Dec 16 21:51:25 2012, 美东)
以下所有事件均有据可查：
• A 1997 high school shooting in Pearl, Miss., was halted by the
school's vice principal after he retrieved the Colt .45 he kept in his truck.
• A 1998 middle school shooting ended when a man living next door
heard gunfire and apprehended the shooter with his shotgun.
• A 2002 terrorist attack at an Israeli school was quickly stopped by
an... 阅读全帖 |
|
|
t******l
发帖数: 10908 | 36 “逻辑” 这个提法太笼统，至少要具体说明一下是符号/操作/属性，或者其他的啥的。
具体的说，我个人觉得在 希尔伯特/cantor 的数学哲学里，“无限” 是 NaN 类型的
数字类符号的一种。（其实 NaN 这个符号本质上也是一型特殊的 number，虽然叫 Not
-A-Number ）。
而上面智人幼儿园大班对 “无限” 的定义，并不是定义为一个数字型符号，而是定义
为某一型 halting problem 的三种 answer（never halt, will halt, undecidable）
中的第一种。（当然，猴话总是要用一个词 infinity，猴语语法的限制，但这并不意
味着 infinity 一定要成为一个符号）。
：无限是纯逻辑啊，但这个世界是基于有限的，必然在各种方面表现出来 |
|
g***c
发帖数: 11523 | 37 fraud
NASDAQ Halts L&L Energy, Inc.
NEW YORK, Nov 18, 2013 (GLOBE NEWSWIRE via COMTEX) -- The NASDAQ Stock
Market NDAQ -0.49% announced that trading was halted today in L&L Energy,
Inc. LLEN 0.00% at 07:00:03 Eastern Time for "additional information
requested" from the company at a last price of $1.68.
Trading will remain halted until L&L Energy, Inc. has fully satisfied NASDAQ
's request for additional information.
For news and additional information about the company, please contact the
compan... 阅读全帖 |
|
r******y
发帖数: 97 | 38 赞自己一个， 跑得真及时，哈哈！
NASDAQ Halts Newlead Holdings Ltd.
GlobeNewswire
The NASDAQ OMX Group, Inc. 2 hours ago
NEW YORK, June 18, 2014 (GLOBE NEWSWIRE) -- The NASDAQ Stock Market(R) (NDAQ
) announced that trading was halted today in Newlead Holdings Ltd. (NEWL) at
9:39:53 Eastern Time for "additional information requested" from the
company at a last price of $0.4955.
Trading will remain halted until Newlead Holdings Ltd. has fully satisfied
NASDAQ's request for additional information.
For news and add... 阅读全帖 |
|
Q*K
发帖数: 3464 | 39 Microsoft’s Windows Phone 7 failed to halt the company's market-share slide
in smartphones during its first few months of release, according to a
comScore report.
Windows Phone 7 failed to halt Microsoft’s decline in smartphone market-
share during its first few months of release, according to new data from
research firm comScore.
In a new report, comScore suggests Microsoft’s share of the U.S. smartphone
platform market dipped 1.7 percent between October 2010 and January 2011,
from 9.7 percent ... 阅读全帖 |
|
s*******n
发帖数: 12995 | 40 这些也是我今天才知道的。
纯就事论事，如果你非要说如果没有枪这些事儿根本不会发生，我只能同意，理想是丰
满的，现实是骨感的。
http://www.lp.org/news/press-releases/halt-the-massacre-of-inno
Responsible gun owners can and do prevent mass shootings from occurring and
escalating.
A 1997 high school shooting in Pearl, Miss., was halted by the school's vice
principal after he retrieved the Colt .45 he kept in his truck.
A 1998 middle school shooting ended when a man living next door heard
gunfire and apprehended the shooter with his shotgun.
A 2002 terrorist att... 阅读全帖 |
|
l*n
发帖数: 2590 | 41 对于5区6区的同学们，春天就快要到了。随着草地一天天的变绿，随之而来的问题也是
夹杂在其中的crabgrass（狗尾巴草）。初期，crabgrass绿油油的冒尖，感觉非常的惬
意，尤其是它在初春嫩绿色的细芽，给一个冬天灰黄的草地带来很多生机。但是如果不
即使处理crabgrass，到了后期它就会大规模的侵占家里的草地，它如同螃蟹的触角会
深入到每一个角落生根。尤其对于北方家庭都是以blue grass为主的草地，螃蟹草更加
的肆无忌惮。
三年前刚刚搬入新家的第一年，我被螃蟹草困扰了一整个夏天。正因为如此，我查了很
多文章和资料，大概总结出了一些经验：
初春时，记得要播撒crabrass preventer。这些基本都是混在初春草地肥料里一起卖的
。Costco和Lowes卖的是Scotts Turf Building with Halts Crabgrass Preventer。这
是我用过的最有效的crabgrass preventer。不过播撒时一定要注意，不要混到你的菜
地和花园里。
播撒的时间：太早了不行，因为crabgrass还没有发芽，几场大雨就把你20刀买来的肥
料冲了个... 阅读全帖 |
|
l*n
发帖数: 2590 | 42 对于5区6区的同学们，春天就快要到了。随着草地一天天的变绿，随之而来的问题也是
夹杂在其中的crabgrass（狗尾巴草）。初期，crabgrass绿油油的冒尖，感觉非常的惬
意，尤其是它在初春嫩绿色的细芽，给一个冬天灰黄的草地带来很多生机。但是如果不
即使处理crabgrass，到了后期它就会大规模的侵占家里的草地，它如同螃蟹的触角会
深入到每一个角落生根。尤其对于北方家庭都是以blue grass为主的草地，螃蟹草更加
的肆无忌惮。
三年前刚刚搬入新家的第一年，我被螃蟹草困扰了一整个夏天。正因为如此，我查了很
多文章和资料，大概总结出了一些经验：
初春时，记得要播撒crabrass preventer。这些基本都是混在初春草地肥料里一起卖的
。Costco和Lowes卖的是Scotts Turf Building with Halts Crabgrass Preventer。这
是我用过的最有效的crabgrass preventer。不过播撒时一定要注意，不要混到你的菜
地和花园里。
播撒的时间：太早了不行，因为crabgrass还没有发芽，几场大雨就把你20刀买来的肥
料冲了个... 阅读全帖 |
|
