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a position at GSK

a position at GSK# Biology - 生物学

s*e2011-01-20 08:01

1 楼

有一篇文章（见附图）是这么说的，用几个resolution的栅格来对同一个image计算
variance（在每个栅格cell内像素值做平均之后，用全域的栅格值来算variance）, 如
果variance和栅格尺度成power关系，则该field为scale-invariant
于是我试了试，如果生成一个uniformly random的white noise图像，再用几个不同
resolution的grid来做variance，用这个定义的话，发现也是scale-invariant，因为
variance和格子的大小也是成power关系的
为什么呢？white noise应该不是scale-invariant的啊？wiki上也说white noise的指
数应该是0，但是确确实实算出来power关系是成立的，而且指数是－2，什么地方理解
错误哦？
谢谢指点

a*w2011-01-20 08:01

2 楼

突然发现一个重大问题。485的application type，办140的人说要填“h. other basis
of eligibility： eb-2 with approved i-140" 因为我的是special handling labor
certification。但是网上好像都说填“a. an immigration petition giving me...
”我也觉得a. makes more sense。到底应该填哪个？谢谢！

d*32011-01-20 08:01

3 楼

Position: Full-Time Regular
Open date: Jan 18, 2011 10:33:36 PM
Functional area: Scientific
Location: Research Triangle Park, North Carolina
Required degrees: Master's Level Degree
Experience required: 5 years
Relocation: Not Indicated
Basic qualifications:
The ideal Physiologist / Cell Biologist candidate will have experience with
a focus in Enteroendocrine biology.
We are looking for an individual with a PhD in physiology or cell biology
with postdoctoral experience, or an MA in physiology or cell biology and 5-
10 years of laboratory experience.
The successful candidate will have the following specific experience:
Ex vivo assessments of Enteroendocrine function, such as Ussing chamber
electrophysiology, everted sac transport measurements, perfusion and peptide
secretion, FACS sorting of primary cell subpopulations, RNAi and peptide
signaling in primary cells.
Preferred qualifications:
Industry experience preferred. Experience preparing and analyzing brush
border membrane preparations, transcriptome analysis of the GI tract, and/or
intestinal peptide isolation would be a plus.
Experience writing reports that support regulatory submissions is desirable.
Details:
Will be responsible for development and implementation of panels of ex vivo
and cell based assays to understand the function of tool molecules with
biological activity in intestinal nutrient sensing.
Will isolate and characterize peptides from the GI tract and assay their
functions in ex vivo and in vitro systems.

e*g2011-01-20 08:01

4 楼

white noise怎么会是scale-variant,
一定是scale-invariant.
要不就不是white noise了。
你计算估计有问题。

【在 s********e 的大作中提到】

: 有一篇文章（见附图）是这么说的，用几个resolution的栅格来对同一个image计算
: variance（在每个栅格cell内像素值做平均之后，用全域的栅格值来算variance）, 如
: 果variance和栅格尺度成power关系，则该field为scale-invariant
: 于是我试了试，如果生成一个uniformly random的white noise图像，再用几个不同
: resolution的grid来做variance，用这个定义的话，发现也是scale-invariant，因为
: variance和格子的大小也是成power关系的
: 为什么呢？white noise应该不是scale-invariant的啊？wiki上也说white noise的指
: 数应该是0，但是确确实实算出来power关系是成立的，而且指数是－2，什么地方理解
: 错误哦？
: 谢谢指点