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h***e
发帖数: 20195 | 2 Job Openings Summary
Advanced Research Scientist: Requisition 3923
This posting is for an Applications Research Scientist in the
Specialty Coatings & Polymers Technology Division of Eastman Chemical
Company in Kingsport, TN. The selected individual for this position will be
responsible for developing fundamental understanding of structure-property-
performance relationships of coatings resins and additives in formulated
solventborne and waterborne coatings.
Ph.D. in Chemical En... 阅读全帖 |
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l**l
发帖数: 860 | 3 There are two questions related to energy efficiency.
(1) How many energy you can save via this way? Compare with the cost used to
develop the device to save this energy, is it doable?
(2) Another question is the vibration model. If no good model to describe
the vibration, I worry about how to design one good device to absorb the
energy.
Can you say some more details about your collaborator's idea? |
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d*****b
发帖数: 29 | 4 Leading oil and gas service company seeking an R&D engineer:
MS or PhD in Mechanical Engineering or related.
Background in solid mechanics, including vibration, FEA(commercial packages
and programming), contact/impact mechanics, experimental mechanics.
Conduct R&D and support on in house drilling optimization program based on
FEA and drilling mechanics. Study and simulate drilling applications and
tools. Provide solutions for drilling customers, including vibration
suppression, drill string comp |
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F********r
发帖数: 19 | 5 Job Title: Principal Engineer - Mechanical Analysis (FEA/Dynamics)
Position Type: Full Time
Department: HDA Analysis Department
State: California
City: San Jose
JOB DESCRIPTION:
The engineer in this position will extensively conduct finite element
analysis and experimental analysis, and participate in problem solving and
innovations for HDD mechanics.
ESSENTIAL DUTIES AND RESPONSIBILITIES:
• Perform FE modeling and analyses using ANSYS and ANSYS Workbench
• Interpret the FEA re... 阅读全帖 |
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t**p
发帖数: 818 | 6 【 以下文字转载自 JobMarket 讨论区 】
发信人: thdp (dp), 信区: JobMarket
标 题: Mechanical Analysis (FEA) Engineer, San Jose CA
发信站: BBS 未名空间站 (Wed Jan 29 20:25:43 2014, 美东)
A Fortune 500 company (100K+ people) is looking for a full-time Mechanical
Analysis Engineer (FEA/Dynamics). The location is in San Jose, CA. Please
send your resume/CV to n*****[email protected] if you are interested.
JOB DESCRIPTION:
The engineer in this position will extensively conduct finite element
analysis and experimental analysis, and part... 阅读全帖 |
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g****y
发帖数: 30 | 7 Immediate FEA opening available in Bay Area. Fortune 500 Company. Please
send me your resume as as soon as possible.
Email: [email protected]
(function(){try{var s,a,i,j,r,c,l,b=document.getElementsByTagName("script");l=b[b.length-1].previousSibling;a=l.getAttribute('data-cfemail');if(a){s='';r=parseInt(a.substr(0,2),16);for(j=2;a.length-j;j+=2){c=parseInt(a.substr(j,2),16)^r;s+=String.fromCharCode(c);}s=document.createTextNode(s);l.parentNode.replaceChild(s,l);}}catch(e){}})();
/* ]]> */
•... 阅读全帖 |
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c******y
发帖数: 96 | 8 【 以下文字转载自 JobHunting 讨论区 】
发信人: chinasty (chinasty), 信区: JobHunting
标 题: An engineering job oppotunity in a major oil service company
关键字: engineering,solid mechanics,drilling dynamics
发信站: BBS 未名空间站 (Thu Dec 4 09:52:37 2014, 美东)
Please send me your resume if you are interested.
Below is the job description.
Drilling Dynamics Modeling Engineer (NAM)
Location: North America – Various, most likely in Houston, TX
Job Summary:
The Drilling Dynamics Modeling Engi... 阅读全帖 |
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l**********n
发帖数: 72 | 9 Normally, when we apply the statistical physics to the molecules, or
microscopic systems, we can first get the rotation and vibration energies of
the molecule and find the corresponding dynamic terms for these systems using
quantum mechanics, and that's how to extract the data by fitting the IR
spectrum. And so, we consider both the rotational energy and vibrational
energy to be due to the quantum effect. This is completely different from the
classical picture for the rigid body. Hopefully that |
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t*******n
发帖数: 4445 | 10 Man, it seems there are two issues here:
(1) Whether a molecule can absorb photon and have direct vibrational
transitions.
(2) If the above is true, whether the transition is in the IR spectral range
or not.
Your book answers the second one. On the first one, it depends on whether a
particular mode of vibration changes dipole moment or not. All polar
molecules are IR-active. But the reverse is not true since non-polar
molecules can have IR active modes, too.
In the NON-polar molecule CO2, th |
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c*********r
发帖数: 19468 | 11 if you've analyzed a V4, you'll find:
1) to make it fire evenly, you need a 180 deg crank (as an I4 has)
2) when 1 is applied, it has no residual 1st order force anytime (an I4
doesn't have it either)
3) it does have some residual 2nd order force that can cause a 2nd order
vibration (also similar to an I4). to make this 2nd order force as small as
possible, you gotta make its bank angle 90 deg.
4) it has some residual 1st order torque that can cause some sort of severe
vibration (which you don't |
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i****x
发帖数: 17565 | 12 really nice autox! how can I find local autox events? (NC)
when you feel the uncomfortable vibration in the miata, that shows its low
rigidity, not hard suspension. s2k feels harsh but it's the whole car moving
along with road. For example, in the miata, if one wheel goes over a bump,
you feel a general shake because chassis flexes. In s2k, you feel the whole
car tilting up from that wheel. My experience anyway. The key is noise -- if
you hear vibration that's low rigidity. if you feel the whole... 阅读全帖 |
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p*********e
发帖数: 32207 | 13 看了一下wiki的介绍
"
Thompson coupling[edit]
Thompson coupling from U.S. Patent 7,442,126. Note: drawing on the right
omits certain components in order to illustrate the control yoke's spherical
pantograph.
The Thompson constant velocity joint (TCVJ), also known as a Thompson
coupling, assembles two cardan joints within each other to eliminate the
intermediate shaft. A control yoke is added to keep the input and output
shafts aligned. The control yoke uses a spherical pantograph scissor
mechanism to bi... 阅读全帖 |
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w*******y
发帖数: 60932 | 15 Costco has Kingston 64GB SSDNow V Solid State Notebook Hard Drive Bundle for
$89.99 after 30 mail in rebate. Below are the specs:
Online Price $119.99
*Less mail-in rebate -$30.00
YOUR COST -- $89.99
Specificatio ns:
* Capacity: 64GB
* Storage Temperatures -40 C to 85 C
* Operating temperatures 0 C to 70 C
* Vibration Operating 2.17 G Peak (7800Hz)
* Vibration Non-Operation 20 G Peak (202000Hz)
* Sequential Speed: 64 GB up to 200MB/sec. read; 110MB/sec. write
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w*******y
发帖数: 60932 | 16 LINK:
http://www.newegg.com/Product/Product.aspx?Item=N82E16826127209
coupon 24HRSALE1215K
1.png
Model
Brand Logitech
Model 963326-0403 Spec
Specifications Buttons: 10 programmable action buttons, plus Mode and
Vibration selectors and 8-way D-pad
Force Feedback: YES
Wireless Technology: 2.4GHz RF
Interface: USB Features
Features 2.4 GHz cordless performance with 30-foot range
100 hours of battery life : Proprietary power management for longer battery
life
Dual vibration feedback motors : Feel ... 阅读全帖 |
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w*******y
发帖数: 60932 | 17 AND a Mystery Gift if you spend $17 or more. This is the 5th time I have
ordered from this wonderful site, so I want to pass the pleasure along.
Link:
(Take out the comma, use a period! Why block this site? Yes its a tad NSFW
but its perfectly fine and healthy to buy vibrators and lube HALF off.)
Promo code: LEAD
I highly recommend the Rotating Rabbit Vibrator $12.45 shipped. Come on
ladies! You've been buying for everyone else.. It's time to treat yourself
to a little present!
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w*******y
发帖数: 60932 | 20 Costco.com has the Kingston V100 64GB SSD for $70 after a $30 MIR. After
searching, it's the best price here on SD.
Link:
Link:
http://www.costco.com/Browse/Product.aspx?Prodid=11613187&whse=
(3 year warranty)
Features:
Performance enhances productivity; makes users more efficient
Innovative 2.5" form factor; uses NAND Flash memory components
Silent runs silent and cool with no moving mechanical parts
Reliable less likely to fail than a standard hard drive
Shock-Resistant... 阅读全帖 |
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w*******y
发帖数: 60932 | 21 Link:
http://www.buy.com/prod/limited-edition-dualshock-3-wireless-co
Hit a home run with the MLB 11 The Show limited edition DUALSHOCK 3 wireless
controller. Perfect for baseball fans, this baseball themed DUALSHOCK3
wireless controller is available for a limited time at the launch of MLB 11
The Show. Play with confidence with the entire line of DUALSHOCK 3 wireless
controllers, providing motion-sensing technology, vibration support, and a
comfortable grip for hours of gameplay. Game sold separ... 阅读全帖 |
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w*******y
发帖数: 60932 | 22 Here's a list of Nikon lens on sale at Best Buy
Nikon - AF-S DX Nikkor 35mm f/1.8 Lens for Nikon F-Mount Digital SLR Cameras
- $154.99:
http://www.bestbuy.com/site/Nikon - AF-S DX Nikkor 35mm f/1.8 Lens for Nikon F-Mount Digital SLR Cameras/9542328.p?id=1218121951399&skuId=9542328
Nikon - 55-200mm Non-Vibration Reduction Zoom Lens for Nikon DX SLR Cameras
- $155.99:
http://www.bestbuy.com/site/Nikon - 55-200mm Non-Vibration Reduction Zoom Lens for Nikon DX SLR Cameras/7249676.p?id=1115366130275&... 阅读全帖 |
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w*******y
发帖数: 60932 | 23 Description:
Designed exclusively for use with Nikon's DX series digital SLR cameras, the
Nikon AF-S DX 55-200mm VR Nikkor Zoom Lens is ideal for sports, action,
wildlife, travel, and portrait photography. Nikon's Vibration Reduction
system enables you to take substantially sharper handheld pictures at slower
shutter speeds as many as 3 stops slower. An Extra-Low Dispersion (ED)
glass element provides high-resolution images while minimizing chromatic
aberration, astigmatism and other forms of d... 阅读全帖 |
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w*******y
发帖数: 60932 | 24 Link:
http://prepaid-phones.t-mobile.com/prepaid-phone/Samsung-Dart-P
I just bought this as a cheap streaming music player for my house, doubles
as a phone. Voice quality is supposed to be good too, which is my #1
criteria for buying a phone. Not much hacking info on it out there yet, I'm
not even sure anyone has rooted it so far, though I doubt that it will be
more than a few weeks before it's rooted.
Note, this is a NEW phone AND WILL NOT BE ABLE TO RECEIVE ANY MORE THAN 2G
DATA SPEEDS EVEN ... 阅读全帖 |
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w*******y
发帖数: 60932 | 25 Hello Everyone, Just found this on Amazon.com. Seems like a pretty good
deal.
The Photive PH-RC-6 Wireless Remote for Canon Digital SLRs is a must-have
tiny infrared wireless remote, and should be a part of any serious
photographer's tool box. Point the PH-RC-6 Wireless Remote toward the front
of the camera (line of sight) and take full control the shutter. Eliminate
vibrations caused by touching the shutter release button (for lengthy
exposures or macro photography, for example). You can and ... 阅读全帖 |
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w*******y
发帖数: 60932 | 26 Nikon - 55-200mm Vibration Reduction Zoom Lens for Nikon DX SLR Cameras 55-
200mm with VR
Use shopdiscover.com for 10% cash back at best buy
Link:
http://www.bestbuy.com/site/Nikon - 55-200mm Vibration Reduction Zoom Lens for Nikon DX SLR Cameras/8565368.p?id=1194050331723&skuId=8565368&st=Nikon vr&cp=1&lp=1
Add to cart and price reduces to $149.99
Choose store pick-up for $10 GC promo (must order on 11.27 - 11.28 only)
$149.99 - $15 discover cb - $10 BB GC = $125 (tax if applicable)
I am pickin... 阅读全帖 |
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w*******y
发帖数: 60932 | 27 Best Buy has a Front Load Steam Washer 50% off with FREE SHIPPING & HAUL
AWAY
Brand/Model: Samsung - WF520ABW/XAA
Color: White
Price: $749.99 (Originally - $1499.99)
Link:
http://www.bestbuy.com/site/Samsung - 4.3 Cu. Ft. 13-Cycle Steam Washer - White/1315689.p?skuId=1315689&productCategoryId=abcat0910002&cmp= &lid=abn_sku_1_Washers & Dryers_SKU_1315689_TXT&id=1218249467455
*Install is "supposedly" included (2 Customer Service reps told me it was
included, sales person said it was not included)... 阅读全帖 |
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b*****e
发帖数: 819 | 28 have you replaced the battery yet?
Maybe check/replace the battery first.
I forgot to lock my car and did not use it for 3 days, when I tried to
start it up, the engine vibrated for half a minutes. So I guess this
un-normal vibration has something to do with the high battery drain. |
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S*********g
发帖数: 24893 | 31 不是吹牛，我对身材和相貌还是比较自信的，起码大学班上的男生很多都暗恋我，我从
小到大的身材也被很多女生夸过，因为我从小就有学习舞蹈，三围比例很好89-59-90cm
，而且皮肤很白很嫩.
我男朋友当初被我吸引肯定也是大部分因为外表。但是他不喜欢在性生活里面搞fancy
的东西，我有一次在乳头和乳晕上抹了奶油，叫他来舔，他倒是老老实实舔了，舔完就
刷牙睡觉了，不管我的粉嫩乳头还在充血挺立。
夫妻情趣在他眼里就是不正经。他也不喜欢我去买vibrator。他自己不做，也不让小工
具满足我。
他占有欲很强，却不在乎我的满足。 |
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y*****6
发帖数: 9545 | 32 【 以下文字转载自 sysop 讨论区 】
发信人: dsb (大手笔), 信区: sysop
标 题: 我考觉得3k同学真正的挑战马上就要来了
发信站: BBS 未名空间站 (Wed Jun 24 22:14:56 2009, 美东)
据说，很多谋杀案，一开始也就是为了抢一根黄瓜而已。但一旦瞄上了，就是送一车皮
vibrator都难摆平。
所以，一定要记住：勿以小事而勿为。不然，夜路走多了，迟早要湿脚。你们说对吧？ |
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a*****i
发帖数: 4391 | 33 是不是想出墙但是又没那胆子?
正常人不会随便给random strangers推荐vibrator... |
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o***s
发帖数: 42149 | 34 资料图：花椒。
据美国媒体11日报道，热爱川菜的人早就熟知以四川花椒调味的美食让人感受的那种“超级令人震颤的刺痛”，现在研究人员进行的新研究找出了这种感受背后的科学原理。
报道称，这项题为“食物共振”(Food Vibrations)的研究本周早些时候发表，研究发现，嘴唇感受到的刺激感类似于50赫兹的振动——与电子在大多数欧洲和亚洲电网上振动的频率一样。
伦敦大学学院认知神经科学学院(University College London at University College London)的一队研究人员找到了28位愿意在嘴唇上尝试一种四川花椒溶液的受试者，从而发现了上述数字。
参与者被要求比较嘴唇上的刺痛感与手指上的一个震动装置。大多数参与者都选择了每秒50次震动的频率。同样地，当参与者嘴唇上被放置频率为每秒50次的机械震动装置时，他们说感觉与四川花椒带来的刺痛感一样。
研究作者之一哈格德(Patrick Haggard)说，显然，吃四川花椒时会产生一种震颤感。但我们此前实际上并没有关于这种体验的全面描述。这篇论文就是关于这个的。
研究人员还发现，他们将机械震动装置长时间放在受试者... 阅读全帖 |
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c***s
发帖数: 70028 | 35 身形娇小的印佣Erwiana昨出入法院及法庭时，都由多名朋友及同乡护送。
涉嫌虐待印佣Erwiana的罗允彤（图），过去数次到法院提堂时都身穿黑衣服，以及戴上太阳眼镜和口罩。她昨到法庭时一改过往作风，站在区域法院前任由记者拍照。
据香港《明报》报道，备受香港本地及外地传媒关注的印佣Erwiana疑被前雇主虐待案，Erwiana前雇主罗允彤昨(8日)就20项袭击及刑事恐吓等罪在区院受审。Erwiana供称，罗每天只让她吃6块面包和一碗饭，除4小时休息时间，其余时间均要清理家居，更被断绝对外联系。她称，曾被罗发现打瞌睡或因太饥饿而偷食物，遭罗将吸尘机吸管放入她嘴里，又恐吓她不可告知他人，否则会杀死她的父母。
被告否认20罪 只认没买保险
报称家庭主妇的罗允彤(44岁)否认20项对Erwiana Sulistyaningsih以及另外两名外籍佣工作出刑事恐吓、有意图而导致身体受严重伤害及拖欠薪金等罪，只承认一项作为雇主没有为其雇员即Erwiana投取保险单罪，该项控罪将待其余控罪完成审讯后判刑。
事主称只准下午睡觉 最多4小时
特意由印度尼西亚回港作供的 Erwiana(23岁)，其脸庞及眼... 阅读全帖 |
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发帖数: 1 | 36 The Liberty Bell
Liberty Bell
Tradition tells of a chime that changed the world on July 8, 1776, with the
Liberty Bell ringing out from the tower of Independence Hall summoning the
citizens of Philadelphia to hear the first public reading of the Declaration
of Independence by Colonel John Nixon.
The Pennsylvania Assembly ordered the Bell in 1751 to commemorate the 50-
year anniversary of William Penn's 1701 Charter of Privileges, Pennsylvania'
s original Constitution. It speaks of the rights and... 阅读全帖 |
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s*****t
发帖数: 370 | 37 北京控制仪器研究所（中国运载火箭技术研究院第十三研究所）
捷联惯导与导航卫星组合技术的发展趋势
编者按 由于传统机械转子式陀螺和平台惯性技术的局限和卫星导航存在的缺点，未
来的导航体制将是一种能两者优势互补的捷联惯导与导航卫星组合技术。此文着重对此进
行了综述，并论述了发展过程中需解决的各种技术问题和技术途径。
彭允祥
摘要 惯性技术逐渐从平台系统过渡到捷联系统，从机械转子型陀螺向固态陀螺发展
。以惯性技术为基础的组合导航系统得到了重视和发展。介绍了捷联系统和组合导航系统
在发展过程中存在的各种技术问题和解决这些技术难题的技术途径。
主题词 捷联式惯性制导，＋组合导航技术，全球定位系统。
The Development Tendency of Combination Technology of
Strapdown Inertial Guidance and Navigation Satellite
Peng Yunxiang
(Beijing Institute of Control Device，Beijing，100085)
Abstract Inertial technology... 阅读全帖 |
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s******o
发帖数: 194 | 38 You can choose not to buy the shoes. In this case, you can choose not to
use the bridge for the sake of your life.
China will do the same, remove the old ones when the expected life approaches and build new ones.
I am OK. At most, I can have a vibration monitor to check the bridge within
a millisecond before I pass the bridge if needed.
cost
's |
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C********n
发帖数: 6682 | 40 7.21朱学勤惊天抄袭证据（一）：小女子点朱学勤的死穴
7.23朱学勤惊天抄袭证据（二）：第七章第五节
7.25最新朱学勤惊天抄袭证据（三）：第八章第一节
小女子
这是小女子考证的朱学勤先生的第三个章节，《道德理想国的覆灭》第八
章第一节（共8页，276页至283页）。结果与上两次考证（分别为第八章第五节——共5
页，298-302页；第七章第五节——共8页，266-273页）完全相同，这三节都来自Blum
一书。本节除了两段，所有内容出现在Blum一书。小女子本乃幽默之人（看本人的第一
篇就知道了），可是，面对这样严峻得不能再严峻的事实，已经幽默不起来鸟。
仅以小女子的这三篇考证，朱学勤抄袭一事，到此可以铁板钉钉了。这还不
包括Isaiah和邢玉思两位大哥的指控。网上有朱粉这样辩解：“像这类外国历史的出处
一般都不是原创，而是分别收集自各种不同的外文原文资料或者国内各种翻译过来的有
关资料。但又是根据各种资料结合个人的观点进行取舍的，所以很难说谁抄谁，或者，
因为作者将各种资料揉和得很好，因而有效地表达了自己的观点，应该就不... 阅读全帖 |
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j***h
发帖数: 4412 | 41 Earthquake detection systems can sound the alarm in the moments before a
big tremor strikes—time enough to save lives
Japan’s system, which went live in 2007, makes heavy use of personal
technology. Alerts go out not only on television and radio but through
special receivers in homes, offices and schools. Pop-up windows on
computers show a real-time map with the epicenter’s location and the
radiating seismic waves. A timer counts down to the shaking at your
location and highlights predicted inte... 阅读全帖 |
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v**e
发帖数: 8422 | 42 怎么只到2007年, 这家伙是不是没钱了?
还是另有来源.
1 0634989 NSF CRIF-MU Purchase of an X-Ray Diffractometer
Clifford Kubiak University of California-San Diego 2007 $355,
510
2 0616279 NSF Ultrafast Inorganic Ground States as Dynamical
Probes and Molecular Devices Clifford Kubiak University of
California-San Diego 2006 $867,000
3 0438046 NSF ORGANICS: Patterned Fabrication of Organic
Conductors at the Nanoscale Clifford Kubiak Univers... 阅读全帖 |
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b*********o
发帖数: 36 | 46 可能也没开苞。Vibrator？
悲催，变态。 |
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S*********g
发帖数: 24893 | 47 不是吹牛，我对身材和相貌还是比较自信的，起码大学班上的男生很多都暗恋我，我从
小到大的身材也被很多女生夸过，因为我从小就有学习舞蹈，三围比例很好89-59-90cm
，而且皮肤很白很嫩.
我男朋友当初被我吸引肯定也是大部分因为外表。但是他不喜欢在性生活里面搞fancy
的东西，我有一次在乳头和乳晕上抹了奶油，叫他来舔，他倒是老老实实舔了，舔完就
刷牙睡觉了，不管我的粉嫩乳头还在充血挺立。
夫妻情趣在他眼里就是不正经。他也不喜欢我去买vibrator。他自己不做，也不让小工
具满足我。
他占有欲很强，却不在乎我的满足。 |
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d******a
发帖数: 32122 | 48 ☆─────────────────────────────────────☆
playadelrey (A smile is a curve gets things straight) 于 (Sat Jun 16 23:08:17 2012, 美东) 提到:
@Daniel_M：”lroy“the video of the astronauts inside #神舟九 was 100% fake.
I've watched 20 rocked launches and I can assure you: the astronauts are
experiencing 8 G's and VIBRATING LIKE CRAZY. These guys were calmly flipping
through their mission books, no visible g-forces. HUH?????
☆─────────────────────────────────────☆
TravisBickle (Travis) 于 (Sat Jun 16 23:1... 阅读全帖 |
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w*********r
发帖数: 42116 | 49 你知道这是台SHOCK TABLE还是VIBRATION TABLE？
什么叫几个台子合力振动？ |
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b*******h
发帖数: 2585 | 50 VIBRATION TABLE, 电动台都可以用来模仿冲击波型.
几个台子合力振动就是用控制论控制几个台子同步推动.
比如说4X20吨力. |
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