查询词典 Np

Then, the method is extended to the problems of decomposing a polyhedron with or without holes into the minimum number of terrain polyhedra, both of which are also shown to be NP-hard.

然后将证明方法推广到地形多面体剖分的问题：将一个带洞多面体或者简单多面体剖分成最小数量的地形多面体，这两个问题都被证明是NP-hard的。

Computational complexity ; NP hard ; protein folding ; HP model ; AB model ; quasi-physical quasi-human algorithm ; simulated annealing ; Tabu search

计算复杂性； NP难问题；蛋白质折叠； HP模型； AB模型；拟物拟人算法；模拟退火；禁忌搜索

Compared with the control treatment, the content of the different phosphorus forms and total phosphorus in wheat grain and labile inorganic P, unknown forms of P and total phosphorus in stems increases significantly under OM treatment. In wheat stem, the content of labile organic phosphorus and lecithoid phosphorus under NP treatment is higher than under other treatments.

与对照相比，单施有机肥能显著增加小麦籽粒各形态磷、全磷和茎秆活性无机磷、未知形态磷、全磷含量； NP处理茎秆有机磷含量显著高于其他处理。

The treatments of NPK and NPK+BCF were better than those of N, NP, NK on the plant height, stem, leaves area, chlorophyll, bearing fruit stick, extent of unfolding, the time of blooming and bearing fruit, and plant soma changes of harvest time. The ratio of basal manure to after manuring and the different ratio of after manuring showed mutual effects: The excessive nutrient had unfavorable influences on plant growth and development in former time.

NPK+BCF及NPK的配方在株高、茎粗、叶面积、叶绿素含量、结果枝、展开度、开花期和挂果期、收获期植株营养体变化等指标上都优于NP、NK及只施N肥的配方；不同基追肥比例及不同追肥比例表现出共同的效果：前期施入过多的养分不利于茄子植株的生长发育。

We used a single-cell model for human ventricular myocytes and also coupled-cell models composed of BP and NP cells.

我们用了一个人类心室肌细胞的单细胞模型和由BP和NP细胞组成的配对细胞模型。

Bringing security metric as a QoS parameter is a new strategy in QoS routing.Aiming at the problems that the way of characterizing the link safety using only one security metric in QoS routing,a strategy that using multi-security metric as routing parameter is proposed.This will characterize the link safety much more exact.The authors will use the strategy mentioned before for secure routing based on differentiated service.An algorithm named MOSRA（Multi-Object Optimal Secure Routing Algorithm）based on nondominated sorting genetic algorithm under Differentiated Service Model is proposed to solve the NP complete.

将安全度量作为一种QoS参数进行路由选择是目前网络安全路由研究的一个新思路，针对现有方法采用一个安全度量参数描述链路安全性，进行路由选择存在的问题，提出一种多安全度量的链路安全性描述策略，能够更加全面准确地描述网络链路的安全特征；该描述策略应用于区分服务模型下的安全路由选择，并提出了基于改进的非支配遗传算法的多目标最优化安全路由算法求解这一多目标多约束的NP完全问题。

Most versions of the Steiner tree problem are NP-complete, ie, thought to be computationally hard.

大多数版本的Steiner树问题是NP -完全的，即认为是难以计算。

Interestingly, strong cellular condensations/aggregations were observed in ASC-seeded type II, but not type I gels, and this aggregation was markedly delayed when the same gels were co-cultured with NP cells.

有趣的是，ASC－II 型胶原复合物会出现聚集浓缩的现象，而加入NP 细胞可以有效的延迟这种现象的发生，但是在ASC－I型胶原复合物中没有这样的现象。

This problem is generally NP-hard and its deterministically equivalent problem is also difficult to be found.

这样的一个问题一般是NP-难，而且其确定性等价问题一般很难导出。

Partitioning problems belong to a kind of NP- complete optimization problems, which occur frequently in the real world. This paper intr oduces a solution to partitioning problems with satisfactory results by using extende d Hopfield neural network.

摘 要 划分问题是一类常见的NP完备的优化问题，本文利用推广的Hopfield神经网络模型解决了划分问题，并取得了较好的效果，为这个问题的解决提供了一条新的途径。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。