查询词典 differentiation of a function

The investigations in this thesis focus on several aspects as follows: We investigate the method that how to produce permutation matrix by using chaotic map, and get the method of image permutation based on chaotic map. This method can make original image to unorderly image to protect the true content of image. We investigate gray level mix function, and put forward a gray level mix function based on chaotic map. Because this function has chaotic characteristics, the image dealed with this function has very uniform histogram. Aiming at the contradiction between error robust and security on image encryption, we put forward a kind of gray level mix function including diffusion mechanism.

本文的研究工作主要集中在以下几方面：研究了如何利用混沌映射产生置乱矩阵的方法，给出了基于混沌的数字图像置乱方法，该方法能够将原始图像变成面目全非的杂乱图像，从而保护了数字图像的真实内容；研究了灰级混合函数，提出了基于混沌的灰级混合函数，由于该函数具有混沌特性，所以经过该函数处理后的图像具有非常均衡的灰级直方图；针对图像加密的错误鲁棒性与安全性之间的矛盾，提出了一种含有扩散机制的灰级混合函数。

Considering the actual surroundings and the characteristics of internal audit in our country,the supervising and examining function,certificating and appraising function,controlling function,risk early-warned function and counseling function should be as the mostly functions of internal audit.

就我国目前的环境和我国内部审计的特点来看，监督检查职能、鉴证评价职能、控制职能、风险预警职能和咨询服务职能应该是内部审计的主要职能。

The automatic meter readingsystem should have the functions: the data acquisition function, the set up parameters, the control to system, the advanced charge system and the protectionfunction; Below latter should realize the function: The data acquisition, the electric quantity initialization function, opening machine and closing machine function and power failure protection function.

计量方式选择多用户自动远传抄表系统和单项智能电表远传抄表系统，多用户自动远传抄表系统应具有如下功能：数据采集、参数设置、系统控制功能、系统预付费功能和保护功能；单项智能电表远传抄表系统应实现以下功能：数据采集、电量预置功能，开关机功能和掉电保护功能。

Radial basis function coupled with a polynomial basis function was used as a trail function, and a Heaviside function was used as a test function of the weighted residual method.

这种无网格方法采用径向基函数耦合多项式基函数来近似试函数，采用Heaviside函数作为加权残值法中的权函数。

In this study, the effect of nCDHA on chondrogenic differentiation of rat adipose-derived adult mesenchymal stem cells in alginate gel was evaluated. nCDHA/alginate composites containing different amounts of nCDHA were prepared and used to encapsulate rat ADAS. The chondrogenic differentiation of ADAS was enhanced after 7 days and the total collagen content increased after 14 days at 500 ppm of nCDHA.

中文摘要本研究先制备一系列nCDHA/alginate奈米复合材料以三维培养方式，探讨大鼠脂肪干细胞经过ㄧ周与二周培养后，软骨分化基因及软骨基质分泌(collagen，GAG)进行评估，结果发现500 ppm nCDHA可增加第7天软骨基因分化与第14天胶原蛋白增生。

In the high-grade metamorphism and anatexis process, in which sapphirine was formed, the multistage crystallization of minerals resulted in the complexity of the mineral association, such as the differentiation of leuco-and melano-components. Generally, the mafic-rich minerals formed earlier, and the differentiation of magnesio-and iron-components is responsible for the earlier presence of ironrich minerals, i.e., magnesio-rich minerals crystallized later, thus the successive associations of multistage occurred.

在形成假蓝宝石的高级变质-深熔作用过程中，岩石矿物组合的变化主要是多阶段变质造成的，如浅-暗色组分发生了分离，其中含镁铁组分多的矿物较早结晶，而镁铁组分的分离使得相对富Fe的矿物较早结晶，即晚期形成的镁铁质矿物更富Mg组分，并形成递进演化的不同阶段的组合。

By comparing and analyzing the dynamic changes of carbonitride in the floral sex determination of litchi we found that: higher C/N and lower amino acid content are beneficial to androecium differentiation; in contrast, lower C/N and higher amino acid content are adequate for gynoecium differentiation; the amino acid content in androecium is only half of that in gynoecium.

荔枝花性决定中碳氮化合物的动态变化的研究结果发现：C/N较大有利于雄蕊分化，反之则有利于雌蕊分化；氨基酸含量较高有利于雌蕊分化，雄蕊的氨基酸含量仅为雌蕊的一半；脯氨酸与花粉育性存在着密切相关关系。

By comparing and analyzing the dynamic changes of carbonitride in during the floral sex determination litchi,it was found that higher C/N and lower amino acid content were beneficial to androecium differentiation; conversely, lower C/N and higher amino acid content were adequate for gynoecium differentiation; the amino acid content in androecium was only half of that in gynoecium; proline was associated with pollen developmental capacity.

比较分析了荔枝花性决定中碳氮化合物的动态变化，结果发现：C/N较大有利于雄蕊分化，反之则有利于雌蕊分化；氨基酸含量较高有利于雌蕊分化，雄蕊的氨基酸含量仅为雌蕊的一半；脯氨酸与花粉育性存在着密切相关关系。

The result of framework protein and lysosome marked with fluorescence was observed in sym-acorched laser scaning microscope: red fluorescent β-tubulin and green fluorescent eathepsin in nerve cell were seen in distribution in the same sample. The distribution of both was the same, and was located in around nucleus in the early of differentiation, and in cytoplasm and apophysis in the maturity of differentiation.

共焦激光扫描显微镜镜观察荧光双标的骨架蛋白和溶酶体的染色结果：在同一标本上，不同波长的单光激发可分别见到发红色荧光的β-tubulin和发绿色荧光的组织蛋白酶D在神经元内的存在及分布情况，二者的分布区域大致相同，神经元分化初期，较集中分布在核周附近，神经元分化成熟则分布于胞质及突起内。

At the cellular level, auxin regulates cell division, extension, differentiation and differentiation.

在细胞水平上，生长素影响细胞的伸长、分裂和分化。

When this condition occurs, inbound replication with the source partner is stopped on the destination domain controller and event ID 2042 is logged in the Directory Services event log.

计算机密码学是研究计算机信息加密、解密及其变换的科学，是数学和计算机的交义学科，也是一门新兴的学科。

Instructions: click on the thumbnails to see a larger image, then use the left-right arrow keys to scroll through the slideshow.

使用说明：滑鼠点在小图上即可放大观赏。开启后键盘左右键可用来换照片。