1.写在前面 最近在阅读老师的论文,看到论文中的NP-hard,co-NP-hard问题,虽然自己知道这是什么问题,但还是觉得有必要对P、NP、NPC、NP-hard、co-NP-hard问题的概念进行辨析,毕竟弄清楚问题的概念是解决问题的第一步。 2.小故事引言 先来看一个小故事,假如老板要你解决一个问题,你绞尽脑汁还是想不出来,叫天...
linked by a hinge to a DNA-binding domain at the C terminus. There are 3 forms of E2, all of which contain the 85–amino acid long DNA-binding domain. The bottom diagram identifies other functional features of E2 such as the amphipathic helices, hydrophobic repeats, a basic region, and ...
(temperature versus pH) formally resembles the stability diagram (temperature versus ionic strength) at neutral pH (Fig.3), when pH is decreased and/or ionic strength is increased, poly (A + 2U) is relatively more stable than poly... J Massoulié - 《Febs Journal》 被引量: 132发表: 196...
patterns and shapes l patternshirt patterson diagram patti and ron patty giggled patty vincent pattya patyayani pau casals i defillÓ pauciflora klotz fran paug swap paul jelle roziers paul alfred biefeld paul antoine aristide paul audet paul biya paul brough paul chu paul cliteur paul cook ...
样本空间和事件,交并补,Venn Diagram, De Morgan Law ^(A and B) = ...; 概率论公理,是简单且显而易见的假设,通过它可以得到强大数定律; 容斥 定理(Inclusion-Exclusion Identity),上界下界,一些恒等式; P(A and B and C and ...) = ... 等可能结果...
pabmi pac international air pacpsycho-acoustic pe pac-man 2009 paca-np pacap-ir pacblock pacch pacchioni pacdfdscom new cdfdsc pace and calories pace off pacemaker cell p pachang creek pachinko hisshou hou pachinko parlors pachliopta aristoloch pachmann pachouli pachycereusbrittonetr pachydermo...
Figure 2B showed the remaining concentration of the p-NP ions after adding different samples. It was noted that the absorbance were increased insignificant when added pure atta- pulgite within 30 min, which meant that the raw attapulgite had no contribution to the catalytic activity. For ...
The following insert arrangements have the same alternate insert rotations for W, X, Y and Z, which are: W As shown in the diagram below, the front face of the pin insert is rotated within the shell in a clockwise direction from the normal shell key. The socket insert would be rotate...
Line diagram shows the correlation of residence (rural and urban) among MDR, p-XDR and XDR M. tuberculosis isolates, although the p value was not statistically significant.Chhavi, PorwalAmit, KaushikNayani, MakkarJayant, ...
pullback diagram pullbudding pulled his hair pulled noodle industr puller pulley bearing pulley n pulley stepper motor pulleylathe pulling apart pulling at me like th pulling herself up pulling rope pulling strength for pulling-indogs pulls impressive stre pull weight pull out of pulmiary vein pulmo...