p*****1
发帖数: 39 | 1 顶楼主啊，现在正在找工作，发现本版power招工的帖子好少。
我是power小硕刚毕业。也是８０%的power system, 20%的power electronics.最近收
到好多公司秒拒信说是职位已经filled。彷徨啊彷徨 |
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h****n
发帖数: 322 | 2 PhD年底毕业，主要论文部分还没有完全结束，再加上各种paper，报告要due，就一直
没来得及好好找工作，最近在linkedin上看了几个opening，投了几家，但是都还没有
消息。
research主要是micro-grid power system optimization，基本都是做的系统层的控制
优化，不涉及power electronics的控制和设计。不过本身power electronics还是学的
不错的，只是很少在具体的项目中运用到。PLC也学得不错，也是没有经验，不过这俩
方面要拣起来应该很快。当然职位还是偏重power system最好。
博士期间也做了很多其他项目，很杂，其中包括hybrid electric vehicle的modeling
和控制方面问题。
也请大牛指点下，目前有哪些potential的公司，如可以内推，更是内牛满面！ |
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v*8
发帖数: 21 | 3 PE啊，我上的就是Energy Systems, Control System Anlys I, Power Electronic
Design, Power System Anlys, Electric Drives, CAD in Power Systems, Applied
Electromagnetics, CT Linear Systems, Power System Dyn & Prot
这些咯~ 还有一些就是基础的电子课，什么Device and circuit之类的 |
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v*******g
发帖数: 334 | 4 how to do power analysis for an interaction in multiple regression?
what power is to detect an interaction in multiple regression ?
how power changes when varying effect size of interction( Beta of interction
)?
proc power / proc GLMPOWER ? |
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B*****n
发帖数: 498 | 5 My focus is to compare two sample means.
Here is how I use PROC POWER
proc power;
twosamplemeans
meandiff = .
sides = 1
npergroup = 7 14 21
stddev = .1
power = .8
alpha = .1;
run;
The result is:
The POWER Procedure
Two-sample t Test for Mean Difference
Fixed Scenario Elements
Distribution Normal
Method Exact
Number of Sides 1
Alpha 0.1
Standard Deviation |
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w********u
发帖数: 328 | 6 the sample size is extremely small but the population is very large, for
example, the frequency of some cancer is extremely low.so it doesn't make
sense to say that the sample follows normal dist.
my question is
1 at least how many sample roughly i need to conduct a power analysis or
what's the lowest frequency to conduct a power analysis
2 the proc power in SAS is for normal dist.power analysis, so which method
could be used in this case, SAS preferred.
Thank you! |
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i*********5
发帖数: 19210 | 7 【 以下文字转载自 Cycling 讨论区 】
发信人: ironman2015 (1/2 ironman x3), 信区: Cycling
标 题: Interbike 2012: Crankarm-based power meters
发信站: BBS 未名空间站 (Tue Sep 25 15:46:01 2012, 美东)
I was at Interbike for the first time this year, and a big trend was crank
arm-based power meters. There were at least three there:
Rotor Power,
Pioneer, and
StagesOne.
The fundamental physics behind each of these three units is the same: to
propel the bike force is transmitted via a mechanical path: pedal body to
pedal spindle to ... 阅读全帖 |
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w*******y
发帖数: 60932 | 8 Amazon:
http://www.amazon.com/gp/goldbox/ref=cs_top_nav_gb27
has Austin Powers Collection: Shagadelic Edition Loaded With Extra Mojo [
Blu-ray] for $30.99. Free shipping. Next lowest:
http://www.dvdplanet.com/details.cfm/info/WBD042590
I've currently seen is $48+.
The collection includes:Austin Powers: International Man of Mystery
Austin Powers: The Spy Who Shagged Me
Austin Powers in Goldmember
Note: Get $4 worth of eligible movies and TV shows from Amazon Video On
Demand after you order yo |
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w*******y
发帖数: 60932 | 9 Buy.com
Black & Decker MX300 Power Pro Hand Mixer
$9.99 with free shipping
A powerful 250-watt motor maintains the speed under any mixing condition.
Use the spatula attachment to scrape the sides of the bowl as you go.
Convenient heel and bowl rests make it easy to set down the mixer while
adding ingredients. Features: 250 Watts + powered for a variety of tasks
Power boost for an extra blast at any speed 5 speeds provide a wide range of
control Comfort-Grip+ handle for non-slip comfort and easy |
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w*******y
发帖数: 60932 | 11 Antec Earthwatts EA650 650-Watt ATX CPU Power Supply
$50 SHIPPED FROM COWBOOM.COM:
http://www.cowboom.com/deal-of-the-day.cfm
Specifications
650-watt power supply ATX 12V version 2.2
6 SATA connectors for Serial ATA hard drives
Low-noise 120mm fan runs cool and quiet
80 PLUS certified for power supply efficiency
Industrial-grade protection circuitry prevents damage from short circuits,
power overloads, over voltage and under voltage
Universal input three 12V inputs and 1 PCI-E connector
Active P |
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w*******y
发帖数: 60932 | 16 Link:
http://www.amazon.com/gp/product/B002LTQFUM
75-watt inverter for converting DC to AC 110-120V
Power electronic gear and appliances while on the road
Conveniently plugs into car cigarette lighter
Accessory plug adjusts 45-Degree for convenient placement
Output Frequency : 60Hz / 50Hz AC power output Continuous power 175W /
Peak power 350W -- USB Output : DC 5V (Max 500mA)
|
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w*******y
发帖数: 60932 | 17 Staples has the APC Back-UPSES 750VA 10-Outlet Power-Saving UPS on sale
for $79.99 after $15 Instant Savings (normally $94.99). Combine with a $25
off $75 coupon and get it for $54.99 + Tax + FS
Link:
http://www.staples.com/APC-Back-UPS-ES-750VA-10-Outlet-Power-Sa
Staples #725337450W/750VA output capacity
10 outlets (5 battery backup, 5 surge)
Typical backup runtime: 12 min. (half load), 2 min. (full load)
High-efficiency charger optimizes power use, meets the strictest global
environmental stan... 阅读全帖 |
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w*******y
发帖数: 60932 | 18 Black & Decker Cordless Powered Caulk Gun - CG100:
http://cgi.ebay.com/Black-&-Decker-Cordless-Powered-Caulk-Gun/3
Includes: Powered Caulk Gun, (1) AA Batteries, Tube Carrier
* Even bead technology for smooth and consistent caulk flow
* 2 Speeds for easy control
* No drip tip design prevents messes
* Easy load barrel for quick tube replacement
* Powered by (4) AA batteries for cordless convenience
Applications: sealing tubs and sinks, sealing doors and windows, caulking
trim ... 阅读全帖 |
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w*******y
发帖数: 60932 | 19 MartinLogan ESL Series Purity DarkCherry Fully Powered Hybrid Electrostatic
Loudspeaker Each:
http://www.newegg.com/Product/Product.aspx?Item=N82E16882981016
$200 off w/ promo code EMCKCJE74, ends 7/17
Model
Brand
MartinLogan
Series
ESL Series
Model
Purity DarkCherry
Spec
Type
Floorstanding Speakers
Sold As
Each
Driver Units
High Frequency Transducer: XStat CLS electrostatic transducer
- Panel Dimensions: 28" 8.6" (71.1 21.8cm)
- Radiating Area: 241 in2 (1,550 cm2... 阅读全帖 |
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w*******y
发帖数: 60932 | 20 Newegg has Polk Audio PSW Series PSW10 Cherry 10-inch Powered Subwoofer:
http://www.newegg.com/Product/Product.aspx?Item=N82E16882290035
for $89 using code: EMCKBJD66
Specs:
Type Subwoofer
Sold As Each
Driver Units 1 - 10" Diameter (25.40cm), Dynamic Balance Polymer Composite
cones
Power Rating Power Output: 50 watts Continuous Average Output
Dynamic Power Output: 100 watts
Frequency Response 35Hz - 200Hz
Connectors Inputs: Speaker level, line level
Outputs: Speaker level
Dimensions & Weight 14.... 阅读全帖 |
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w*******y
发帖数: 60932 | 21 PricePlunge:
http://www.priceplunge.com/
has the Energizer 150 Watt AC Mobile Power Inverter w/ USB for $7.99 + $1.
99 S/H = $9.98 total.
Features:
Converts power from vehicle's 12V outlet into traditional AC power
Great for charging laptops, DVD players, portable gaming systems, music
players
Features USB charging port, as well as an LED indicator light and cooling
fan
Includes:
AC Mobile Power Inverter
12 Volt Vehicle Plug
2 to 3 Prong Converter
User Guide
Reg Price: $40.00
|
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w*******y
发帖数: 60932 | 22 Polk Audio PSW Series PSW505 12" Powered Subwoofer Each - 189$
use promo code - EMCJKJG68
Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16882290130
Driver Units
1 - 12" Diameter, High excursion polymer composite cone with hi roll
surround, shielded
Power Rating
Power Output: 300 watts Continuous Average Output
Dynamic Power Output: 460 watts
Frequency Response
23Hz - 160Hz
Connectors
Inputs: Speaker level 5-way binding posts, line level (filtered) and LFE (
unfiltered)
Outputs: Spea... 阅读全帖 |
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w*******y
发帖数: 60932 | 23 Polk Audio PSW505:
http://www.jr.com/polk-psw505-powered-subwoofer/pe/POK_PSW505/
12-Inch Powered Subwoofer @ J&R 179.99 Shipped + 5% Cash Back
Cost 179.99 + Free Shipping Coupon Code FS100 = 179.99 shipped plus 5%
cashback via urlhasbeenblocked during black friday double rebate (normally 2
.5%)
Net Cost after cash back is $171.00 shipped. I've been looking at this sub
for awhile and this is the best price i've ever found on it.
Product Features
Single powered subwoofer in black for use with ... 阅读全帖 |
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w*******y
发帖数: 60932 | 25 Excellent PSU for any gaming rig. A little overkill for 90% of gaming PCs
but room for much expansion such as maximal overclocks on high powered
single rigs! (i7's & GTX 580s with high overclocks + watercooling pumps etc.
..)
Use PSU Calculator to see if 650 can handle an SLI/Xfire if you want to. ATI
cards maybe, Nvidia cards, being the power hungry fermi architecture they
are, probably not. AGAIN check the link @ overclock.net
OCZ has been getting better with the quality of their new lines of ... 阅读全帖 |
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w*******y
发帖数: 60932 | 26 Link:
http://1saleaday.com/flash/micrdualvpc1/
Condition: Factory Refurbished
Packaging: Bulk
Warranty: 90 Day
Manufacturer: Verizon
Model: MICRDUALVPC1
Features Include:
oProvides portable power
oLED shows power status
oBuilt-in USB port lets you charge any secondary device with the use of a
USB cable
oSmall and lightweight for convenient portability
oRemovable micro USB data charging cable
oShort circuit protection
oCompatible with handsets that support Micro USB ports
Package Includes:
Verizo... 阅读全帖 |
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w*******y
发帖数: 60932 | 27 Link:
http://www.amazon.com/gp/product/B002LTQFUM
Use Promo Code: 5DSPROMO
175-watt inverter for converting DC to AC 110-120V
Power electronic gear and appliances while on the road
Conveniently plugs into car cigarette lighter
Accessory plug adjusts 45-Degree for convenient placement
Output Frequency : 60Hz / 50Hz AC power output Continuous power 175W /
Peak power 350W -- USB Output : DC 5V (Max 500mA)
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g******u
发帖数: 3060 | 29 Linear是很牛的公司，在低压power IC方面应该是前三位的吧。而且这些年来貌似没有
卖掉过什么部门，算是效益很好了。Linear著名的地方就是贵，datasheet写得最好。
如果你是做IC的，只要去digikey找找所有有关power management的芯片，就知道有哪
些大公司了，小公司比较麻烦，要google你的application了。
至于做power electronics的公司全美国无数，任何电子产品，总要有power部分的是不
是？ |
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a*m
发帖数: 6253 | 30 【 以下文字转载自 EE 讨论区 】
发信人: aTm (Aggie), 信区: EE
标 题: Power Management IC software development opening
发信站: BBS 未名空间站 (Tue Sep 21 15:16:41 2010, 美东)
The successful candidate will be responsible for developing and integrating
software drivers for power management and audio products. We develop and
market world-class high integration power management ICs and Analog Baseband
ICs (power + audio).Our success is driven by individuals with an
entrepreneurial spirit and a desire to see their hard work have |
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d*****g
发帖数: 1616 | 31 http://www.foreignaffairs.com/articles/66205/robert-d-kaplan/the-geography-of-chinese-power
Foreign Affairs
May/June 2010
The Geography of Chinese Power
How Far Can Beijing Reach on Land and at Sea?
Robert D. Kaplan
ROBERT D. KAPLAN is a Senior Fellow at the Center for a New American
Security and a correspondent for The Atlantic. His book Monsoon: The Indian
Ocean and the Future of American Power will be published in the fall.
The English geographer Sir Halford Mackinder ended his famous 1904 ar |
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c**i
发帖数: 6973 | 32 (1) Beam It Up | Energy: Laser beams can deliver energy to machines
through thin air. This might be a good way to power drone aircraft or a
space elevator. Economist, Mar 10, 2011.
http://www.economist.com/node/18304136?story_id=18304136
("The laser, aimed from the ground at photovoltaic cells mounted on the [
drone] Pelican’s underside, charged the chopper’s battery")
Note: The article states, "LaserMotive, the Seattle company that designed
the Pelican’s laser system, won $900,000 by powering... 阅读全帖 |
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k***a
发帖数: 2258 | 33 BO’AO, China — The senior leadership of the Chinese government
increasingly views the competition between the United States and China as a
zero-sum game, with China the likely long-range winner if the American
economy and domestic political system continue to stumble, according to an
influential Chinese policy analyst.
Enlarge This Image
Saul Loeb/Agence France-Presse — Getty Images
President Obama spoke at a nuclear summit in Seoul, South Korea, last week
as President Hu Jintao of China listene... 阅读全帖 |
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R**********t
发帖数: 1795 | 34 女人外F跟POWER(政治,钱或武力)和洗脑有关系,也跟女人的自由程度有很大关系.
首先,如果女人没有选择的权力,就不可能外F,如穆斯林和阿三女人.
如果女人有选择的自由,下一步就是选择谁的问题. POWER 是个硬指标,肯定有女人因
此而外F. 同时,还有许多女人外F是被洗脑的结果.如果女人从小就感到自己的种族
在社会中地位低下,当然就会外F别的种族.如果女人被灌输白人的审美观和价值观,不可
避免的女人要外F白人.在这种情况下,女人的自由和权力越大,选择外F的越多.
中国女人就是在这种情况下长大的.中国人包括很多男人(尤其是老将们)都认为白人的
审美观和价值观
是真理,中国人包括很多男人(尤其是老将们)都认为中国人是劣等的.同时,中国女人又
是世界上最有自由和权力的一帮女人,结果可想而知.
幻想中国将来如果变得更强大,更富有,因追求POWER而外F的国女数量或许会下降也是
不实际的.因为不管中国整体有多强大,个体上肯定有外男比国男强的,外F女就有理由外
F.
要彻底改变外F趋势,只有两种方法,对女人洗脑和剥夺女人选择的权力.对女人洗脑,白
人正在做,而且很成功.剥夺女人选择的方法穆斯... 阅读全帖 |
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c****x
发帖数: 6601 | 35 No wonder Oscar Wilde said “Everything in the world is about sex except sex
. Sex is about power.” Even engaging in sex for self-validation is about
power in the sense that we give our power away every time we look outside
ourselves for acceptance or a sense of worth. |
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W*****B
发帖数: 4796 | 36 性是推动人类社会发展的主要原动力之一
：No wonder Oscar Wilde said “Everything in the world is about sex except
sex. Sex is about power.” Even engaging in sex for self-validation is about
：power in the sense that we give our power away every time we look outside
：ourselves for acceptance or a sense of worth. |
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W*******n
发帖数: 4140 | 37 NYS WCB # G2029240, The Power of Evil
---My Written Statement to the Upcoming 03/27/2020 Hearing
By Limin Wang
March 21, 2020
WCB’s correspondence received on 02/20/2020 states that the employer/
carrier, claiming to “have documentation of voluntary removal from the
labor market”, has made a hearing request on 02/10/2020, i.e., the date the
WCB panel of three judges announced their rejection to my 10/31/2019 review
appeal. I am eager to learn what kind of documentation it could be. My
documenta... 阅读全帖 |
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d*****g
发帖数: 1616 | 38 【 以下文字转载自 Military 讨论区 】
发信人: dahuang (大黄), 信区: Military
标 题: The Geography of Chinese Power
发信站: BBS 未名空间站 (Tue Jun 15 11:05:09 2010, 美东)
http://www.foreignaffairs.com/articles/66205/robert-d-kaplan/the-geography-of-chinese-power
Foreign Affairs
May/June 2010
The Geography of Chinese Power
How Far Can Beijing Reach on Land and at Sea?
Robert D. Kaplan
ROBERT D. KAPLAN is a Senior Fellow at the Center for a New American
Security and a correspondent for The Atlantic. His book Monsoon: The Indian |
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s*******u
发帖数: 2249 | 39 Islamic law has been officially adopted in Britain, with sharia courts
given powers to rule on Muslim civil cases.
The government has quietly sanctioned the powers for sharia judges to rule
on cases ranging from divorce and financial disputes to those involving
domestic violence.
Rulings issued by a network of five sharia courts are enforceable with the
full power of the judicial system, through county courts or the country's
High Court, a part of its Supreme Court system.
Previously, the ruling |
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d*******r
发帖数: 301 | 40 By Jonathan Lloyd and Robert Kovacik
NBCLosAngeles.com
updated 26 minutes ago
An Arizona utility commissioner said he's willing to pull the plug on Los
Angeles if the city goes through with a boycott of his state.
In a letter to the city of LA, a member of Arizona's power commission said
he would ask Arizona utility companies to cut off the power supply to Los
Angeles. LA gets about 25 percent of its power from Arizona.
"That is one commissioner who has that idea -- whether he can do that or not |
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O********8
发帖数: 261 | 42 power lock 和remote有什么关系啊？所谓的power lock是指车开动的时候自动上锁。
你想说的是不是keyless entry用来遥控开车和锁车的？那个不叫power lock. 叫
keyless entry. 你去Best Buy 看看，他们那里有，而且给安装的，一共大约200左右
。 |
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A****e
发帖数: 84 | 43 听说 Techron是宝马指定的清洁剂，但是我一直都用Shell 的 V-power. 如果我把
Techron加在 V-power里面用，可以
吗？ V-power 好像里面本来就是有清洁剂的，那么它原来的清洁剂会不会和
Techron互相影响，反而效果不好啊？
哪位知道的，指教指教啊 |
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d*b
发帖数: 21830 | 44 如果fluid少到连打方向盘都困难的话，你的power steering pump早完蛋了，你早可以
听见刺耳的尖叫声了。
所以，你要没听到尖叫声的话，一般打方向盘困难跟fluid level没啥关系，power
steering 分高压和低压两回路，要高压漏油，基本1分钟你的pump就报销了，低压漏油
就简单了。先随便找点power steering fluid加上。 |
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g****g
发帖数: 1828 | 45 sounds like "dadada....". the frequency goes higher as engine revolves
faster.
maybe power steering pump?
i changed power steering fluid a few weeks ago. i accidentally let engine
run dry for ~30 seconds. must have air went into it. don't know if it will
break the power steering pump. |
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w****n
发帖数: 586 | 46 2004 chevy impala, 大概一年前power steering 出过问题，换过steering rack,
power steering pump, 现在power steering fluid漏的比较厉害。有没有人有过类似
经历，改怎么解决。请尽管给建议 |
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M*********a
发帖数: 213 | 48 我以前也是按照手册上写的规格买的ATF的用，上次让那个中国师傅给换这个管子的时
候，他就一起买了一瓶power steering fluid（普通的，没有stop leak功能的），换
完管子，就给加的这个power steering fluid.我还拿着手册给他看说是ATF的，他说没
事的，哪种都行，我也就没坚持。
这个加power steering fluid不会真的把pump搞坏吧？这几天早上起车的时候pump有点
吱吱响，我每隔一段时间就检查一下有没有少，一直都正常，我还纳闷呢怎么突然就吱
吱响了呢！ |
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l*****g
发帖数: 18 | 49 Try Lucas power steering stop leak fluid. It have been working for my 1998
Tayota Avalon for 8 year w/o any problem. I heard the noise of my power
steering pump when the power steering fluid leaked too much and the shop
asked for $1300 to replace the rack and pinion 8 years age. |
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z****g
发帖数: 2128 | 50 不需要换
但是换了也是很好
transmission 还好吧，90刀
power steering 要 160，抢钱啊。哪个难度比transmission小多了。
lz你自己也可以换。
1）去walmart买个turkey baster，在bakery附近。
2）去amazon，curryacuraparts或者local dealer，买3瓶honda的power steering fluid，大概10+一共。
3）打开hood，找到power steering的reservoir，应该在wind shield fluid旁边，油尺旁边。
4）大概它的盖子，用baster吸里面的fluid出来。然后加入新的到max。
5）开动车子，左右满舵几次。关掉发动机
6）重复4）-5）几次直到你的3瓶fluid用完（最后留点，保证你能在hot max的线下）
7）将fluid加到hot max以下，完成。
整个工序可能需要30分钟就好了。为了更好地减小你左右满舵的阻力，你在前轮下面垫点厚纸皮就好了。 |
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