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8g 笔记本推荐

8g 笔记本推荐# Hardware - 计算机硬件

p*n2010-05-13 07:05

1 楼

申请了Pre-OPT准备9月2号去上班，6月7号申请的，现在还是initial review，现在一
般多久批准啊？

m*i2010-05-13 07:05

2 楼

刚刚看到的。。。思考占星是否伪科学的时候随手一搜。。。哇、哇、哇~`
J Clin Epidemiol. 2006 Sep;59(9):964-9. Epub 2006 Jul 11.
Testing multiple statistical hypotheses resulted in spurious associations: a
study of astrological signs and health.
Austin PC, Mamdani MM, Juurlink DN, Hux JE.
Institute for Clinical Evaluative Sciences, G1 06, 2075 Bayview Avenue,
Toronto, Ontario, M4N 3M5 Canada. p**********[email protected]
Comment in:
* J Clin Epidemiol. 2006 Sep;59(9):871-2.
Abstract
OBJECTIVES: To illustrate how multiple hypotheses testing can produce
associations with no clinical plausibility.
STUDY DESIGN AND SETTING: We conducted a study of all 10,674,945 residents
of Ontario aged between 18 and 100 years in 2000. Residents were randomly
assigned to equally sized derivation and validation cohorts and classified
according to their astrological sign. Using the derivation cohort, we
searched through 223 of the most common diagnoses for hospitalization until
we identified two for which subjects born under one astrological sign had a
significantly higher probability of hospitalization compared to subjects
born under the remaining signs combined (P<0.05).
RESULTS: We tested these 24 associations in the independent validation
cohort. Residents born under Leo had a higher probability of
gastrointestinal hemorrhage (P=0.0447), while Sagittarians had a higher
probability of humerus fracture (P=0.0123) compared to all other signs
combined. After adjusting the significance level to account for multiple
comparisons, none of the identified associations remained significant in
either the derivation or validation cohort.
CONCLUSIONS: Our analyses illustrate how the testing of multiple, non-
prespecified hypotheses increases the likelihood of detecting implausible
associations. Our findings have important implications for the analysis and
interpretation of clinical studies.
PMID: 16895820 [PubMed - indexed for MEDLINE]
http://www.ncbi.nlm.nih.gov/pubmed/16895820

b*e2010-05-13 07:05

3 楼

正好打到250
不用谢

j*e2010-05-13 07:05

4 楼

哪位给推荐个支持8g内存的笔记本，
多谢

j*f2010-05-13 07:05

5 楼

听说现在还是挺慢的，最少六个星期。我有一朋友说得经常打电话催department of
homeland security.

b*n2010-05-13 07:05

6 楼

淡定。。。

a

【在 m**i 的大作中提到】

: 刚刚看到的。。。思考占星是否伪科学的时候随手一搜。。。哇、哇、哇~`
: J Clin Epidemiol. 2006 Sep;59(9):964-9. Epub 2006 Jul 11.
: Testing multiple statistical hypotheses resulted in spurious associations: a
: study of astrological signs and health.
: Austin PC, Mamdani MM, Juurlink DN, Hux JE.
: Institute for Clinical Evaluative Sciences, G1 06, 2075 Bayview Avenue,
: Toronto, Ontario, M4N 3M5 Canada. p**********[email protected]
: Comment in:
: * J Clin Epidemiol. 2006 Sep;59(9):871-2.
: Abstract