g********0
发帖数: 6201 | 1 04/10/2012 Tanya Lewis
In a series of comments in Nature, economists suggest ways to reduce
financial inefficiency in academic research, but some researchers don’t
believe science should be managed like a business.
In today’s economic climate, academic institutions are seeking to maximize
their investment in research. While financial and productivity experts agree
that inefficiencies exist within the system, their suggestions for
improvement vary.
Last week, Nature published three commentaries (... 阅读全帖 |
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C***t
发帖数: 915 | 2 目前我知道的系里有一个老教师完全这样做了。我觉得事前录video还是很花时间的，
不过好处是麻烦一次（如果能录满意的话），今后再教就容易了？
Faculty typically spend a lot of time teaching—over 20 hours of a 50-hour
workweek in one study (Bentley and Kyvik 2012). Are we spending that time
productively? Obviously, whether or not we feel productive depends on what
we hope to accomplish as instructors. For example, virtually all the faculty
surveyed in the 2013–14 Higher Education Research Institute Faculty Survey
felt that two learning outcomes were particularly key:... 阅读全帖 |
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w*******y
发帖数: 60932 | 3 Amazon have a $2 Coupon for Tide
Clip the coupon on the item page and select Subscribe & Save
Tide Free and Gentle High Efficiency (Pack of 4):
http://www.amazon.com/gp/product/B002V1H2WU/ref=twister_dp_upda
#productPromotions" rel="nofollow" target="_blank" onclick="_gaq.push(['_
trackEvent', 'thread', 'click', '3777994 - tide-free-and-gentle-high-
efficiency-liquid-75oz-pack-of-4-28.52-ac-ss-amazon']);">Tide Free and
Gentle High Efficiency (Pack of 4) [Tide Free and Gentle High Efficiency (
Pa... 阅读全帖 |
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j*********n
发帖数: 90 | 4 high effeciency 是 >92% AFUE. 现在的furnace 至少80% AFUE. high efficiency
furnace 要接PVC 管子把废气通到外面。如果你旧的furnace大小适当的话，用
90000BTU times 旧的furnace的efficiency 再除以新的furnace的efficiency 就是新
furnace的 BTU.80% efficiency 的furnace 可以仍然用chemney 排气 |
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k****a
发帖数: 4944 | 5 National Grid energy efficiency rebates
Welcome to National Grid’s energy efficiency rebate application web site.
We offer rebates on qualifying energy efficiency equipment for Residential,
Commercial and Multifamily gas heating customers. Installing high-efficiency
equipment helps you reduce energy usage, lower your energy bills and ensure
a cleaner, “greener” future!
请推荐Contractor，自己不懂哪款机器有退款。
谢谢！ |
|
m**a
发帖数: 1228 | 6 【 以下文字转载自 Living 讨论区 】
发信人: moja (moja), 信区: Living
标 题: high efficiency condensing boiler到底好不好？
发信站: BBS 未名空间站 (Wed Jul 20 23:26:36 2011, 美东)
quote了几个plumber，都好像不推荐这些high efficiency的boiler
理由有：不如传统cast ion的皮实，只能用个十一二年，需要更
多maintenance，最重要的是，天气特冷的时候其实efficiency不
高（因为condensing的效率取决于return water的温度，大概天气
越冷，大家开得越热，return的温度太高，没啥condensing效果）。
但是州里的energy save program又有1000块的rebate给这些
high efficiency的，还有tax credit（错过了去年大的rebate），
好像又说明这种boiler应该是好。
到底是plumber们是old school，还是政府在lobbyist的诱导
下忽悠人？ |
|
m**a
发帖数: 1228 | 7 quote了几个plumber，都好像不推荐这些high efficiency的boiler
理由有：不如传统cast ion的皮实，只能用个十一二年，需要更
多maintenance，最重要的是，天气特冷的时候其实efficiency不
高（因为condensing的效率取决于return water的温度，大概天气
越冷，大家开得越热，return的温度太高，没啥condensing效果）。
但是州里的energy save program又有1000块的rebate给这些
high efficiency的，还有tax credit（错过了去年大的rebate），
好像又说明这种boiler应该是好。
到底是plumber们是old school，还是政府在lobbyist的诱导
下忽悠人？ |
|
p**e
发帖数: 533 | 8 普通双窗算不算energy-efficient exterior windows？
LE2双窗算不算energy-efficient exterior windows？
好像energy-efficient exterior windows可以抵税，需要提供什么证明吗？
谢谢。 |
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c******e
发帖数: 350 | 9 现在打算将用烟囱的gas furncace更换成high efficiency 的．
在home depot上，想查查两种furnace大概会差多少．
却发现，我根本从名称上看不出来哪种furnace 是 high efficiency的．
请问，版上是否有高人可以科普一下么？多谢！
另外，high efficiency furnace有什么好处？
从安全角度，是不是有烟囱的furnace可以更好的将废气（一氧化碳什么的）排出房子
，会更好呢？
BTU大概如何选择呢？现在的旧furnace是９００００BTU, 房子大概1200sqf.
多谢！ |
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f********s
发帖数: 658 | 10 Well，market efficiency在经济学上分不同的层次……研究Market efficiency有几个
结论对投资比较有用：
1. small cap return Actually beat Big cap in a consistent way in a Long time
. Make sure diversify your portfolio into small cap. This means buy And
hold SPY as most people said here will not maximize your portfolio value in
the long way.
2. same applied to International diversification
3. Behavior Finance Can deviate the assumption of market efficiency in
traditional economics， which means market anomaly can persist for a lon... 阅读全帖 |
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h****r
发帖数: 2056 | 11 请教一下对南湾人民来说high efficiency furunace和80% efficiency furnace的区别
。具体是冬天的gas heating bill会有多大差异。
也请推荐一下口碑好的heater/ac 的contractor。 |
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T*********e
发帖数: 39815 | 12 ☆─────────────────────────────────────☆
Deling (流浪歌手-instant swimmer,just add water) 于 (Wed May 7 17:15:15 2008) 提到:
我来挖个坑吧。我觉得efficiency是个很重要的issue，比走的快点慢点重要多了。大
家来说说都有些什么小的detail可以增加efficiency的。我先来
* 出门前把所有需要调整的gear都调整好
* 出门前把帽子手套和snack放在外套口袋里。在trailhead就省了时间
* 停下来等队友的时候吃东西
* 晚上进帐篷前把第二天早上要带的东西准备好，绳子准备好，结都打上
* 即使天没黑，进帐篷的时候也要把头灯准备好，放在手边
☆─────────────────────────────────────☆
TrueCabbage (醋溜圆白菜~青菜豆腐) 于 (Wed May 7 17:44:58 2008) 提到:
不错的题目,补充一些:
efficiency对个人来说,主要是多实践,多从别人身上学习各种经验技巧. 经 |
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o**x
发帖数: 901 | 13 有感于隔壁帖子的心灵与外貌。。。我老发挥点儿余热，发明出一个efficient
frontier吧，以供大家择偶参考，递交世界外贸组织协会申请专利。
该曲线公式is given as:
EF = B0 + [Beauty(i) - B0]/[100-soul(i)] (*)
见下图的曲线：
假设你对外貌能够接受的底线是B0.比如，你觉得至少长相至少要>芙蓉姐姐长相才能接
受，那么B0 = 芙蓉姐姐的外貌。Bo>0.
那么你对外貌进行打分 Beauty(i)， Beauty(i)>0, 无上限。
心灵进行打分 soul(i)， 满分100。
带入上述公式，得到的EF值构成一条oxox efficient frontier曲线。
如果某candidate落在该曲线以下，那么算unqualified candidates,弃之or留作备胎使。
曲线上方是可遇不可求区，也就是癞蛤蟆蹦跶不到的天鹅肉区。
如果落在efficient frontier曲线上，都算合格，大胆追求之；
在tangent point处是你的perfect match,Propose之。
(*)注refer |
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t*****m
发帖数: 254 | 14 不断地见大家讨论20，30个dish的圣诞大餐，考虑了一下，觉得大家feast来feast去的
，不觉得很
不energy-efficient吗？那么多dish吃的东西，要花100度电吧？？
这不大家都买了energy-efficient的冰箱，洗衣机，热水器，是不是圣诞大餐也得考虑
一下
energy-efficient呢，比如冷冻pizza直接微波炉热热就可以给8个人过圣诞了吗，或者
cold
cereal泡凉水？？ |
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H**1
发帖数: 34 | 15 小弟设计了一些primer，用来做RT-QPCR，检测几个基因的mRNA在WT和KD细胞的变化。
设计好了primer，小弟先在WT和KO细胞测试引物的efficiency。
小弟把cDNA稀释成1：5，1：10，1：20，1：40，然后做QPCR，计算efficiency。
结果发现同一个引物，在两个细胞系的efficiency居然不同。
请教这是为什么？
着急。 |
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V******t
发帖数: 444 | 16 是每个实验都要把efficiency算进去吗？
可是我看到，大部分人做qPCR检测mRNA变化的时候，是根本不做梯度稀释，计算
efficiency的。
哪种好啊？每次都算efficiency，工作量变大了。。。 |
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V******t
发帖数: 444 | 17 是每个实验都要把efficiency算进去吗？
可是我看到，大部分人做qPCR检测mRNA变化的时候，是根本不做梯度稀释，计算
efficiency的。
哪种好啊？每次都算efficiency，工作量变大了。。。 |
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p*****e
发帖数: 989 | 18 Efficiency, in most case, only means min. variance for all linear
unbiased estimators. this is just the conclusion of the trivial
Gauss-Markov theorem, should be taught in any linear regression class;
or page 3 in any regression book.
If the errors are NORMAL, (like in your case), MLE will be the same as
LSE, it reaches the Rao-Cramer lower bound, (info. matrix)
how come you are reading robust estimators, while having
no clue of those basic results???????????
FTing......
efficiency
efficiency? |
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w*****a
发帖数: 156 | 19 【 以下文字转载自 Postdoc 讨论区 】
发信人: walkcpa (小同学), 信区: Postdoc
标 题: Postdoc opening in thermal analysis/energy efficiency
发信站: BBS 未名空间站 (Thu Mar 22 22:07:27 2012, 美东)
贴一条postdoc 招聘信息, 感兴趣的请直接和老师联系:
http://jobs.phds.org/job/32251/university-of-wisconsin-milwauke
research-associate-on-energy-efficiency
尤其欢迎 有thermal analysis 和 building energy efficiency 背景的人申请.
这个位置和工业界合作机会很多. 对打算以后进工业界工作的同学非常有帮助. |
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z*******n
发帖数: 1034 | 20 By Aaron Mamiit, Tech Times | June 21, 10:22 PM
Share(0 )Tweet(1 ) 0 Comments
Android
Google will make the Android faster and more efficient with the replacement
of the Dalvik runtime with ART. However, there are some compatibility issues
with the new runtime.
(Photo : Tsahi Levent-Levi)
Google is dropping the Dalvik runtime for ART, which will make the Android
system work faster and become more energy efficient.
The runtime handles the decompilation of all Android apps in real time.
Google intr... 阅读全帖 |
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h****r
发帖数: 2056 | 21 请教一下对南湾人民来说high efficiency furunace和80% efficiency furnace的区别
。具体是冬天的gas heating bill会有多大差异。
也请推荐一下口碑好的heater/ac 的contractor。 |
|
|
l******n
发帖数: 47 | 23 Studio/Efficiency Apartment Sublease: Plan J only $410 ($515 Value) (
Columbus, OH)
Studio/Efficiency Apartment Plan J for sublease.
Close to the first stop of UV Bus, laundry room is in the same building,
only $410(rent)+$67(utility), starting from March 19th to June 15th. You can
renew it if need. Furniture is available if desired.
站内发信
谢谢！ |
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t*m
发帖数: 4414 | 24 Vanguard S&P 500 ETF (VOO) and Vanguard 500 Index Fund Admiral Shares (VFIAX
) have the same expense ratio (0.05%).
Are my following understandings correct?
(1) they are equivalent in a tax sheltered account (e.g. IRA) for long
term investment (e.g buy and hold for >5 years). Although ETF will suffer a
tiny disadvantage because of buy/sell spread and Premium/Discount spread.
(2) In a taxable account, ETF is more tax efficient even for long term
investment (e.g buy and hold for >5 years).... 阅读全帖 |
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s****c
发帖数: 299 | 25 Why I have the same impression that ETF is more tax efficient?
Googled this article:
http://www.investorguide.com/igu-article-970-etfs-etfs-ease-tax
What all this means is that the actions of individual ETF investors will not
affect the tax liability of other traders. There are no taxable
transactions that take place at the fund level so the IRS has nothing to
worry about. This helps investors delay paying taxes on gains until the
holdings are sold, thus making ETFs more tax efficient than mutua... 阅读全帖 |
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t*m
发帖数: 4414 | 26 I have Fidelity New Markets Income Fund (FNMIX) and Matthews Pacific Tiger
Fund (MAPTX) in my taxable account. About 10K each.
Are they tax efficient?
(1) One is a bond funds, and the other is an active stock funds, therefore,
tend to be tax inefficient.
(2) But they are foreign funds. Will the foreign tax credit make them even
more tax efficient than a S&P 500 index funds?
(3) Should I put these two positions into IRA account and switch out ~20K
IVV to my taxable account?
Many thanks! |
|
M********r
发帖数: 278 | 27 I would say tax managed funds are more tax efficient. ETFs are tax efficient
because they passively track index without trading much. Tax managed funds
adopt active tax saving strategies (for example, selling losing positions on
purpose to harvest tax loss) to minimize distributions. |
|
n******h
发帖数: 50 | 28 大哥们说看Efficient C++可增加C++基础，但请问哪版比较好？我搜了一下，大概有
1.
Efficient C++: Performance Programming Techniques
by Dov Bulka, David Mayhew
2.
Effective C++: 55 Specific Ways to Improve Your Programs and Designs (3rd
Edition)
by Scott Meyers Paperback
3.
More Effective C++: 35 New Ways to Improve Your Programs and Designs
by Scott Meyers
应该也有第二版，但没找到。请指教！ |
|
z**********n
发帖数: 233 | 29 千万不能去JCPENNY买,我和你一样,看到广告什么60%off就奔去了，好在我的习惯是买
下之前喜欢shopping around，比价格。最后还是在homedepot买的，不过不知道你是要
问价格哪好还是质量哪好？价格的话，hoemdepot和lowes差不多，就找那些正在20％或
15％off，我最近刚订了一批并要包安装，觉得还可以。质量的话，我们今年买过三个
，具体有多efficient不好说，如果真的要energy efficient的话还是换窗比较好，找
有energy star标志的买还可以年底退税（不知道现在还有没有） |
|
j**y
发帖数: 134 | 30 买的房子是 private septic sewer, agent 说买high efficiency washer对sptic比较
好，不知道是什么原理。看版上有人说high efficiency的洗不干净，哪位明白给说说,
谢谢 |
|
G***G
发帖数: 16778 | 31 there are several efficient ways to kill wasp.
Fire or fireflame is not a good option.
1) if the wasp nest is small, just use a flyswatter.
2) if the wasp nest is big, try high pressure water gun
or high pressure vacuum.
I personally recommend to use high pressure vacuum. It is very efficient. |
|
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r*m
发帖数: 16380 | 33 efficient 不efficient，一多半是个定义（语言）和世界观的问题。
其实无论如何对我们小散都影响不大。
总之不要寄希望你能找到beat市场的屠龙刀就对了，无论TA， FA， XA。
老老实实，那闲钱用玩游戏的心态来投资（投机），赚到了是运，赚不到是命。
散户唯一能做的，就是管好本金，量力而行，先立足于不大败之地，再期待积小胜为大
胜。 |
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t*******g
发帖数: 123 | 34 you question is has a logic flaw. if market is efficient, then who's the
people correcting the mistakes to make it efficient. if there are people out
there correcting constantly, then there is opportunity to exploit the
inefficiency. I think that's a very stupid proposition. |
|
S*********n
发帖数: 440 | 35 【 以下文字转载自 JobHunting 讨论区 】
发信人: Schweinchen (Oink Oink), 信区: JobHunting
标 题: Smart Grid and Energy Efficiency Career Panel and Networking Event
发信站: BBS 未名空间站 (Mon Jun 27 17:11:53 2011, 美东)
VantagePoint Capital Partners Presents:
Smart Grid and Energy Efficiency Career Panel and Networking Event
Thursday, July 14, 2011
6pm - 9pm
Palo Alto, California
Exclusive opportunity to mingle with executive team members of Adura,
Tendril and Trilliant.
Limited space is available.
Pre-registration is requi... 阅读全帖 |
|
t*m
发帖数: 4414 | 36 I have Fidelity New Markets Income Fund (FNMIX) and Matthews Pacific Tiger
Fund (MAPTX) in my taxable account. About 10K each.
Are they tax efficient?
(1) One is a bond funds, and the other is an active stock funds, therefore,
tend to be tax inefficient.
(2) But they are foreign funds. Will the foreign tax credit make them even
more tax efficient than a S&P 500 index funds?
(3) Should I put these two positions into IRA account and switch out ~20K
IVV to my taxable account?
Many thanks! |
|
t*m
发帖数: 4414 | 37 I have Fidelity New Markets Income Fund (FNMIX) and Matthews Pacific Tiger
Fund (MAPTX) in my taxable account. About 10K each.
Are they tax efficient?
(1) One is a bond funds, and the other is an active stock funds, therefore,
tend to be tax inefficient.
(2) But they are foreign funds. Will the foreign tax credit make them even
more tax efficient than a S&P 500 index funds?
(3) Should I put these two positions into IRA account and switch out ~20K
IVV to my taxable account?
Many thanks! |
|
D****g
发帖数: 2860 | 38 我来挖个坑吧。我觉得efficiency是个很重要的issue，比走的快点慢点重要多了。大
家来说说都有些什么小的detail可以增加efficiency的。我先来
* 出门前把所有需要调整的gear都调整好
* 出门前把帽子手套和snack放在外套口袋里。在trailhead就省了时间
* 停下来等队友的时候吃东西
* 晚上进帐篷前把第二天早上要带的东西准备好，绳子准备好，结都打上
* 即使天没黑，进帐篷的时候也要把头灯准备好，放在手边 |
|
w****r
发帖数: 240 | 39 这个贴资怎么只有wst的efficient frontier, oxox再弄出来个图，看看俺们既善良又
羊毛好H的efficient frontier, 应该是multi-denmentional的吧，可以有多个tangent
points, 有多个老婆吧 |
|
f*******h
发帖数: 1269 | 40 I got the following problem, and want to know an efficient solution.
Data flows as streams (record with a value and a timestamp).
How can I efficiently check if there is a duplicate in a time window T?
Thanks a lot. |
|
D******n
发帖数: 2836 | 41 【 以下文字转载自 Linux 讨论区 】
发信人: DaShagen (Unbearable lightness), 信区: Linux
标 题: Server efficiency
发信站: BBS 未名空间站 (Fri Mar 7 09:02:25 2014, 美东)
A question about server efficiency.
In our company we run a specific software everyday to do data manipulation
and statistical analysis. All the data can only be written to a common
folder for "security" reason. Save for the chaos caused by being able to
delete each other's files, will this be an I/O nightmare compared to being
able to spread out the data fi... 阅读全帖 |
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t***q
发帖数: 418 | 42 有两个LIST,一个LIST 2000行左右的数据。另一个LIST 3000行左右的数据。现在对
2000行的LIST的每一行，要遍历3000行的LIST的每一行，做一些运算，然后对于2000行
的LIST的每一行，可以给出3000行左右的值，再对这3000行左右的值取MAX。
写了一个PYTHON程序，算这样一个东西要花26分钟。据说这不EFFICIENT.
想问一下，怎样写才能提高SCRIPT的EFFICIENCY?
一般来讲这样的程序，运算的比较快的话，需多少分钟？
如果是一个3000行，和100，000行的LIST，做这样的运算，比较快的程序，完成这样的
运算得多长时间？多谢！有包子！ |
|
s*****t
发帖数: 119 | 43 下面两个HIVE query做同一件事情，请问那个query更efficient？假设在Map Reduce的
frame work 下
Query 1:
select id, count(distinct value) values
from table1
group by id;
Query 2:
select a.id, sum(1) values
from
(select distinct id, value
from table1
)a
group by a.id
;
另外请有哪本书或视频讲HIVE的query efficiency吗 |
|
s*****t
发帖数: 119 | 44 嗯 有道理 我也比较疑惑
这是一道面试题 我先答的1，面试官问有没有其他更efficient的解法
我说可以用2做，但不知道是不是更efficient
面试官提示说，可以考虑一下哪些特定情况哪个更好些
最后还是没答上来，对底层的MapReduce还是不熟
query |
|
s*******l
发帖数: 2445 | 45 一个朋友之前做的一个knockdown/knockout gene expression的technique申请了专利,
最近和他聊天谈起把它商业化的前途。
他的技术的背景是：RNAi Knockdown的efficiency有时候很低，他的technique可以和
RNAi一起用来更好的降低endogenous的蛋白表达水平。所以他想考虑做一个service或
者reagent的公司提供一些热门gene的combined knockdown,也可以根据客户要求来做
customized的服务。
现在在做一些初步的市场分析调查，因为自己不是之前不是做这些的，想请教一下有没
有好的关于RNAi Knockdown的efficiency的综述文献，或者目前普遍在用的siRNA的一
般的knockdown效率的数据。非常感谢！ |
|
|
m***o
发帖数: 272 | 47 I am using sybr green qPCR,当测试primer时，用1,1:10,1:100,1:1000,1:10000
cDNA dilution.经常会出现这种情况:用所有5个浓度，primer efficiency会140%，如
果用最稀释的3个，efficiency会好些105%。查查是PCR inhibitor的问题。
如果这样的话，这个primer还是可以用的。
我的问题是：是不是应该把cDNA 也要稀释至少100倍才可以得到可信的结果呢？
谢谢！ |
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a****l
发帖数: 125 | 48 现在用 tail vein injection 在老鼠里表达adenovirus－Cre, 想用这个方法在 flox
animal 上做肝脏里的knockout. 打了两次knockout efficiency 只有 40%－50%。 觉
得远远不够。看不到phenotype. 有什么方法可以增加knockout 的efficiency 吗？
多谢 |
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V******t
发帖数: 444 | 49 如果你检测，某target引物的efficiency是1.6，内参是1.9，那只用检测一次吧，以后
只要同时用内参和这个target都按1.9，1.6计算？
但是实际上每次不同的pcr，efficiency也会有变化的啊。难道每次都做个梯度稀释才
是最准确的？
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