b****s
发帖数: 10197 | 1 才艺兴趣课大类上不就那几个吗：训练肢体的比如sports, dancing, karate这些都是
这一类， 训练耳朵的：music instrument, 训练动手的: drawing.
那培养孩子要不要全面呢， 一般来说大家都追求全面发展不是。那学Music instument
就很重要了。 |
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B******1
发帖数: 9094 | 3 One thing that Indian kids might not be so excellent is music, piano or
violin especially. I seldom see them playing those instuments during local
competition or even recitals. |
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W*****t
发帖数: 4595 | 4 考private license大概需要多少费用，从头算起的话？
再加上instument rating和multi-engine，费用能涨到多少？
大概该给估计一个平均价格就好了，多谢 |
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L*********r
发帖数: 1201 | 5 就在母版来发吧
大家祝福句，祝我早点拿到offer，好有钱学instument吧，呵呵 |
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A******y
发帖数: 2041 | 6 A project without clear endpoint is going to be waste of money. Mahanttan
project: build the bomb. Moon-shot: Land on the moon. Human Genome
project: sequence the human genome. Brain mapping? What are we mapping?
Please tell me.
FYI, all those project at moment of funding, the technology is already there
or at very beginnig. For example, human Genome project started when
capillary array electrophoresis come into play i.e. the monkey machine. I
guess most of you cannot even name the pers... 阅读全帖 |
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f*****0
发帖数: 489 | 7 "That is non-sense! For many OpAmps and Instumentation Amplifiers, one
important specification is noise between 0.1Hz to 10Hz, or 0.01Hz to 10Hz.
That is measured by passing the amplifier output through a bandpass filter
with passband of 0.1Hz to 10Hz or 0.01Hz to 10Hz. Yes, we do use an analog
filters to do that. it works fine at this low frequency. go to take a look
at some datasheets: http://focus.ti.com/lit/ds/symlink/opa2244.pdf"
sorry for being persistent but where did the opa2244 datashee |
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y****u
发帖数: 50 | 8 we don't have technicians in the group,
and the Boss distributes the responsibilities of instuments to everybody.
when something is wrong, the instrument has higher priority than research...
that really takes time and energy. |
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l****e
发帖数: 11 | 9 Tough but good job, no patient care and less responsibility (
aneathesiologist responsible for the patient's condition). Cons: long time
standing, communication skills with peers and physician, lot of instuments
to memorize. pros: always needed, pays better. |
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n*s
发帖数: 752 | 10 我有一个多晶材料，已知［002］面大致平行于材料的一个表面
我用omega-2theta模式测了那个表面，得到了［002］［004］［014］三个peak
直接套用scherrer's formula，得到的结果比较一致
2 theta plane FWHM grain size (nm)
36.211 [200] 0.028 298.5
38.498 [130] 0.036 233.7
42.958 [220] 0.029 294.4
这样做可信么？
我的FWHM是直接把peak fit成gaussian得到的，3个peak看上去都不太对称，都是左半
边（小角度）比右半边高些。需要用2个gaussian来fit么？
如果我想考虑strain和instument broadening的话，可以直接fit这个公式里的A，B，C
么？
2 A 2 2 2
FWHM = (---------- ) + (B tan(theta) |
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W*****t
发帖数: 4595 | 11 考private license大概需要多少费用，从头算起的话？
再加上instument rating和multi-engine，费用能涨到多少？
大概该给估计一个平均价格就好了，多谢 |
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