查询词典 Np

The problem remains NP-complete even if all expressions are written in conjunctive normal form with 3 variables per clause (3-CNF), yielding the 3SAT problem.

问题依然存在NP完全问题，即使所有的表现形式是书面的合取范式与3个变量为第（ 3合），收益率的3SAT问题。

For the np-hard problem of constructing minimum connected dominating set in ad hoc networks, this paper proposed a novel distributed mcds constructing algorithm called dmca. dmca constructed a mcds for ad hoc networks based on a maximal independent set. in dmca, each node only required the knowledge of its one-hop neighbors and there existed only one shortest path connecting two dominators these were at most three hops away.

摘 要：针对无线自组织分组网络中最小连通支配集创建np难问题，提出了一种分布式的最小连通集创建算法dmca.dmca基于最大独立集的构建，只需要周围一跳邻居的信息，在不超过三跳距离的一对支配节点之间找出一条最短路径。

This problem is known to be NP-hard. Some techniques of dimension reduction, including the decomposability of the problem, were studied in the literatures.

作为NP-困难问题，该问题的降维性质已被研究，其中包括它的可分解性。

Alkylphenols are applied widely as the rubber additives surfactants in domestic and industrial products, antioxidants and so on. As it's decomposer, nonylphenol has a steady chemical characteristics and exist widely in environment. As it's molecule structures are similar as 17beta-estradiol in human body, and it can combine with estradiol receptor simulating it, disrupt endocrine system and induce health damage effect. Many studies on environmental endocrine disrupting chemicals approved that NP have weaken estradiol functions.

烷基酚被广泛用作塑料增塑剂、农药乳化剂、纺织行业的整理剂等，作为其降解产物壬基酚(nonylphenol，NP)的化学性质稳定，环境分布广泛，由于其分子结构与人体内雌二醇的分子结构相似，许多环境内分泌干扰的实验研究结果证实壬基酚具有雌激素样作用，可以模拟雌激素与体内雌激素受体结合，干扰机体的内分泌代谢，导致健康危害效应。

Inoculation of effective degraders to the modified polluted soils spiked with 2-nitrophenol was carried out by batch culture. The concentration of 2-NP、pH values and the number of 2-nitrophenol degrader were monitored in the experimental period to understand the variation of test strains.

将试验菌株接种於模拟污染土样中，进行批次生物降解实验，监测实验过程之2-硝基酚的菌数、浓度及pH值，并研究外加硝酸钾和氯化铵及混合菌种培养对於模拟污染土样之影响加以探讨。

Results: the pH was slightly decreased during the autoclaving, but there was no turbimetric change and diametric change of the NP.

结果 浊度没有明显的变化，pH值在经过高温高压处理后有轻微的降低，粒径变化没有变化。

A number of useful natures of the discernable matrix is discovered, and used to solve the NP problem.

发现了分辨矩阵的若干有用性质，利用这些性质使粗糙集理论中的求核与约简问题得以解决。

We present the Maximum Disjoint Sets for Maintaining Coverage and Connectivity problem, and we prove it is NP-complete.

在这一章节中我们将介绍保证覆盖和连同的最大化不相交节点结合问题，同时我们证明这个问题是NP完全的。

Based on the endocrine disrupter characteristic of alkyl phenol compounds, the short chain alkyl phenol compounds still have estrogen hormone effect, and their environmental effect must be pay attention in the pollutant control of NP.

根据烷基酚类物质的内分泌干扰特性，短链烷基酚仍然具有雌激素活性，因此在壬基酚污染防治过程中应给与足够的重视。

Although finding the Minimum Connected Dominating Set in an arbitrary graph is a NP-hard problem, many approximation algorithms have been proposed to construct a serviceable CDS.

由于求解最小连通支配集是一个NP难问题，许多近似算法被提出用于构建可用的最小连通支配集。

While the humble corrugated box may be one of the most simple and rudimentary packages around today, there is very little that is primitive or low-tech about the modern-day machinery used to stuff those boxes with all manner of packaged consumer goods at breakneck speeds--with unfailing precision and repeatability.

虽然谦虚的瓦楞纸箱可能是最简单和最基本的封装周围今天，很少有说是原始的或低技术的现代机械用的东西这些框与各种形式的包装消费品的在惊人的速度-与不懈的精度和可重复性。

Instead of thinking of God as the immutable Prime Mover of the universe, argues Ogden, it makes more sense to describe him as "the ultimate effect" and as "the eminently relative One, whose openness to change contingently on the actions of others is literally boundless."

Ogden主张：与其将上帝视为宇宙不可动摇的主宰，还不如将其视为一种"最终产物"及"和这个世界有着非同寻常关联的事物"更有道理。上帝的可变开度视世界上所有人的行为而定，而因为世界所有人行为的无限，上帝的变化力理论上是无边无际的。