f*******5
发帖数: 10321 | 1 isnt it similar to argmented reality? |
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r*******g
发帖数: 1707 | 13 LOL 你也看过啊，我上课还用过这个video |
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w***n
发帖数: 4358 | 17 ☆─────────────────────────────────────☆
sweetww (甜麦圈) 于 (Sun Sep 5 15:04:50 2010, 美东) 提到:
我在网上卖车，收到这邮件。麻烦帮我看看这个可信么？没用过paypal
Hello
Thanks for the prompt response..Am really okay with your Car which i saw
at the website and i want you to get back to me with your final asking
price and i am ready to buying it now for my Wife as a birthday gift and i
am at sea at the moment as i am a marine engineer and due to the nature of
my work, phone calls making and visiting of website are restricted... 阅读全帖 |
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发帖数: 1 | 18 最近急需升级macbook pro retina, 但是这个烂苹果就是死死不推出更新。也不知道龟
孙子怎么想的。网上不断开始传又要变thin，oled touch bar， 还有 touch id什么的
，听着就上火。老子不需要这些鬼东西，你丫给我上个skylake老子就很满意。整那些
虚的干嘛，或者先上个skylake然后再慢慢整别的，会死啊？尤其那个touch bar，没病
吧，好端端的键盘不好吗？整那些干吗？还额外消耗电量。
本来想买个pc算了，但是pc也不争气，pc的鼠标触控板难用的能憋出粪来。
搞个没有技术背景的商人来领导高科技企业，真是感觉烂苹果越来越不上道了。就像网
友说的，rotten fruits get unsold. 真是太贴切不过了。 |
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B*****g
发帖数: 34098 | 19 【 以下文字转载自 Programming 讨论区 】
发信人: qxc (法界闲人), 信区: Programming
标 题: 学习了学习了！数据库火车票的高效并发实现
发信站: BBS 未名空间站 (Sun Feb 9 01:58:51 2014, 美东)
带了一天 2个娃， 简直不是人干的事情。。。
废话少说， 直接上干货。
前面我们的数据库， 都有个思维陷阱 -- 吧数据库当 java/C 了。 设立了各种和车
站车次物理模型符合的数据结构， 弄得各种不爽， 而且无法并发 - 卖一个站， 这个
站相关的所有其他票都受影响。
下面直接上简化的 psudo code. 大家都是聪明人，其他部分脑补。 这个办法的各种
log(n),甚至 o(1) 效率是很明显的。
tickets
{
id
trainid
start
end
type
transaction_id // null if unsold.
duration ( ==end - start) // 选座优化用
}
比如 车次 X 从 s0 .... s19. 那么一开始 3000 张票， 从 0 到 19.
售出... 阅读全帖 |
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F******n
发帖数: 346 | 20 My HP Pavilion Tx1xxx was bought at about the same time as yours and mine
had never been fast even when it was brand new. Installed XP but problem
persists. Eventually it breaks down and can not boot up. I was told that the
nVidia GPU (6150) has a design flaw which causes overheating, which I
noticed that mine had the problem. The overheating unsoldered the GPU from
the motherboard.If yours is much hotter than other notebook, you probably
has the same problem but less significant.You can find mo... 阅读全帖 |
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q*c
发帖数: 9453 | 21 带了一天 2个娃， 简直不是人干的事情。。。
废话少说， 直接上干货。
前面我们的数据库， 都有个思维陷阱 -- 吧数据库当 java/C 了。 设立了各种和车
站车次物理模型符合的数据结构， 弄得各种不爽， 而且无法并发 - 卖一个站， 这个
站相关的所有其他票都受影响。
下面直接上简化的 psudo code. 大家都是聪明人，其他部分脑补。 这个办法的各种
log(n),甚至 o(1) 效率是很明显的。
tickets
{
id
trainid
start
end
type
transaction_id // null if unsold.
duration ( ==end - start) // 选座优化用
}
比如 车次 X 从 s0 .... s19. 那么一开始 3000 张票， 从 0 到 19.
售出交易id = null
有人买一张从0 到19 的全程票，
start transaction
select top 1 ticket where start <= request.start and end >= request.end and
transactio... 阅读全帖 |
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r**u
发帖数: 69 | 22
citi took 70$bn worth of siv back on its balance sheet. i suspect much of it
subprime cdo. so 18$bn writedown is not that bad (i.e. their might be more!)
得承
by default, you mean cdo default to its creditor or underlying asset default?
if you priced the cdo and it's not sold, it stays on your (siv's) balance
sheet. so a lot of writedown are unsold cdos. banks might retain higher
rated tranches as well as the yields were unattractive to buyers and they
thought it's secure to hold those.
have a ni |
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z*******n
发帖数: 1034 | 23 http://gamerboom.com/archives/83506
发布时间：2014-04-24 11:23:24 Tags：Facebook游戏收益,mark pincus,发现游戏渠道
1）据gamasutra报道，Facebook日前宣布其游戏收益在上个季度仍然强劲，但预计未来
发展将出现困难，因为大量Facebook用户已从桌面平台转向移动平台，而Facebook目前
主要游戏支付收益却是来自桌面平台。
Facebook“整体支付及其他费用”收益是Facebook游戏的主要收益来源，在2014年第一
季度（截止3月31日）达到2.37亿美元，同比去年第一季度增长10%，但其中主要增长却
并非来自游戏业务。
facebook-q12014 payments(from gamasutra)
facebook-q12014 payments(from gamasutra)
Facebook首席财务官David Ebersman表示第一季度Facebook游戏支付收益同比上年仅增
长1%，远低去2013年时Facebook报告所显示的8%年增长率，可见Facebook游戏支付收益... 阅读全帖 |
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w*******e
发帖数: 53 | 26 这是San Francisco Chronicle 上关于湾区房市走势的最新分析文章，应该算比
较中立、中肯。
全国光房市就Wipe Out了 6 个Trillion的财富，Obama的1个Trillion的救市计划能够
带来通货膨胀？看来是庸人自忧了。
http://www.sfgate.com/cgi-bin/article.cgi?f=/c/a/2009/05/26/MNR
--------------------
Signs of more trouble ahead for housing market
Carolyn Said, Chronicle Staff Writer
Tuesday, May 26, 2009
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i******l
发帖数: 828 | 27 【 以下文字转载自 immortalclub 俱乐部 】
发信人: immortal (immortal), 信区: immortalclub
标 题: 一个牛人关于房事的瓶论
发信站: BBS 未名空间站 (Sat Jun 20 14:07:24 2009, 美东)
Prominent among the illusory signs of a turn in the economy is last week's
report of an uptick in housing permits and starts. Here, too, the glad cry
went out that the "housing slump is over." Mark Hanson, the savvy proprietor
of Hanson Advisors, who knows just about everything there is to know about
real estate and mortgages, has his own informed and decidedly ... 阅读全帖 |
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g********n
发帖数: 2314 | 28 【 以下文字转载自 SanFrancisco 讨论区 】
发信人: sfca (Here we Goo^_^), 信区: SanFrancisco
标 题: New Home Sales Tumble to Record Low in January zz
关键字: home,house,unemployment,new home
发信站: BBS 未名空间站 (Wed Feb 24 12:15:32 2010, 美东)
Sales of new homes in the United States plunged 11.2 percent in January from
December to a historic low, the
government reported Wednesday in a fresh sign of weakness in the troubled
housing market.
Sales of new single-family houses fell to a seasonally adjusted annual rate
of 309,000,... 阅读全帖 |
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g********n
发帖数: 2314 | 29 Real estate billionaire Mort Zuckerman describes the state of the housing
market:
America’s housing crisis has not gone away. If anything, it is getting more
severe. Today, median single family house prices nationwide are down by
slightly more than 30 per cent from their early 2006 peak. Fusion IQ, the
research group, estimates that excess inventories will push prices down by a
further 10 per cent. This is a critical issue because home equity was for
years the largest asset on the balance sheet ... 阅读全帖 |
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g********n
发帖数: 2314 | 30 By ALAN ZIBEL and J.W. ELPHINSTONE, AP Real Estate Writers Alan Zibel And
J.w. Elphinstone, Ap Real Estate Writers – 1 hr 12 mins ago
WASHINGTON – Sales of previously occupied homes plunged last month to the
lowest level in 15 years, despite the lowest mortgage rates in decades and
bargain prices in many areas.
July's sales fell by more than 27 percent to a seasonally adjusted annual
rate of 3.83 million, the National Association of Realtors said Tuesday. It
was the largest monthly drop on r... 阅读全帖 |
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