查询词典 selection function

Evaluation of Characters and Selection of Thirty Samples of Toona Sinensis;2. The Grey_connection_decision method is applied to the selection of the Populus Tomentosa carr.

选择 9种有代表性的三倍体毛白杨无性系和 1个普通毛白杨，对其化学组份和纤维特性进行分析测定，试验结果用灰关联决策的理论和方法进行综合分析评价，对三倍体毛白杨无性系纸浆材进行选优。

In order to implement universality,interoperability and transplantability in bioelectrical impedance measurement system,using the idea of abstract,this paper divides the system into four parts: signal source module,excitation selection module,measurement selection module and demodulation module.

为了实现生物电阻抗测量系统功能抽象设计的通用性、互用性和可移植性，运用抽象化的思想，将生物阻抗测量系统抽象为信号源模块、激励选通模块、测量选通模块和解调模块。

In this paper, we have proposed a flexible encryption blocks selection buyer-seller watermarking protocol integrated the RSA asymmetric encryption system and homomorphism mechanism to protect the ownership of digital contents and fit real life. And consider the secondhand transaction in the real life. We also propose a buyer-reseller watermarking protocol based on the flexible encrypt blocks selection buyer-seller watermarking protocol to offer a solution of secondhand transaction. In our scheme, it's more light data transport requirement than other schemes. All roles in protocol will benefit by their participation. Our scheme can overcome various of the known attacks and security problems in the buyer-seller watermark protocol, such as buyer's right problem, unbinding problem, piracy tracing problem, conspiracy problem, buyer's participation in the dispute resolution problem, man-in-the-middle attack problem and anonymous problem. Furthermore, the seller and arbiter can verify the buyer's watermark without decrypting it in our scheme.

本文除应用RSA非对称式加密与秘密同态机制，提出了一个符合现实生活中买卖交易行为、可弹性调整加密范围数位内容买卖浮水印协定，强化了目前研究中对於数位内容买-卖浮水印协定的安全性，并进一步的考量二手商品交易行为，在可弹性调整加密范围数位内容买卖浮水印协定基础上，提出一个结合数位内容二手买卖与盗版追踪的二手数位内容买卖浮水印协定，达到让参予买卖的角色可以在安全的情形下完成二手数位内容所有权的移转并从中获取相对应利益的目标的数位内容转卖浮水印协定来增强了目前数位内容买卖浮水印协定研究中对於二手交易欠缺之处，解决了数位内容买卖浮水印协定中所可能遭遇的重要安全性议题，如：买方权益、盗版追踪、资讯不连结、共谋、买方需要参与仲裁、中间者攻击及匿名性问题。

With proper atomic coherence, the performance has the following advantages compared with that of the velocity selection of the ultracold two-level atoms by the micromaser: high resonant transmitted efficiency, low unresonant transmitted efficiency, and large velocity selection scale. The second part includes the fifth chapter.

原子透射几率只受到一种量子干涉效应的影响，其来源为V型的两个跃迁通道，因此Micromaser对入射超冷V型三能级原子束速度的选择性能深深地受到原子相干性的影响，我们发现选取适当的原子相干参数以及其它参数，速度选择性能可以达到很理想的状态：共振原子透射效率高、透射原子束的速度纯度好、速度选择范围大。

A greedy feature selection algorithm has been employed, and a wieldy sample selection algorithm basing on the frequency histogram re-sampling has been proposed, which reduces the influence of redundant features and samples, and consequently improved the robustness of the resulting*recognition system.

从模式识别本身对训练样本集的要求出发，给出了基于频度统计函数重抽样的样本选择方法，一定程度上消除了冗余样本和奇异样本给分类器的学习、训练和分类识别带来的不良影响。

Maize inbreds are xenial. For the hybridization along with continuous gene exchange among different plants creating a new hereditary variation pool and thereafter on the effect of natural selection and artificial selection, it creates a new germ plasm which is different from the original germ plasm at quite a large extent.

玉米是异花授粉的，在不同植株之间，由于杂交以及相伴随的连续的基因互换会创造出新的遗传变异库，其后在自然选择和人工选择的作用下，产生在相当程度上不同于原始亲本种质的新种质。

Under the auspices of MOP and MOA in the last ten years, an integrated technical study on forage species selection, variety combination, seed treatment, land surface treatment, proper seeding time, airplane type selection, maintenance after seeding and reasonable utilization was conducted in the county, focused on aviating seeding and protection and utilization.

飞播种草是沙化、退化草地治理的重要技术措施之一，近10年在财政部、农业部的大力支持下，全国开展了以&飞播种草＋保护利用&为核心，对牧草筛选、草种组合、种子处理、地面处理、适时播种、机型选择、播后管护、合理利用8项关键技术进行组装和研究，集成应用在北方沙化退化草地区等6个不同生态区域中。

The efficiency of molecular marker-assisted selection was investigated using two populations from pedigree selection and modified backcrossing pyramiding developed for the breeding purpose.

利用长江流域推广品种泗棉3号和优异纤维种质系7235为育种亲本，配置了系统育种和修饰回交聚合育种两套群体。

A it is predominantly derived from the initial variety or from a variety which itself was predominantly derived from the initial variety, while retaining the expression of essential characteristics that result from the genotype or combination of genotypes of the initial variety; an essentially derived variety may have been obtained by the selection of a natural or induced mutant or of a somaclonal variant, by the selection of a variant individual from plants of the initial variety, by backcrossing, by a transformation by genetic engineering, or by any other similar method

一个品种主要由原始品种演化而来，或主要由原始品种的实质性派生品种演化而来，同时保留了来自原始品种基因型或基因型组合的基本特征的表达；一个实质性派生品种可能通过选择自然变异或诱变或体细胞无性变异、原始品种植株的个体变异的选择、回交、基因工程的改造或任何其它类似方法而获得。

Collating is very important in data processing and it takes much time in batched data processing.The paper introduces an improved selection collating algorithm,which extremely reduces number of comparision times comparing with the usual selection collating algorithm and saves more than 40% of CPU time.

排序在数据处理中起着极其重要的作用，而排序在成批数据处理中占了相当的计算机时间，介绍的一种改进的选择排序算法，与通常的简单选择排序算法相比，大大地减少了比较次数，平均节省了40％的CPU时间。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。