试验方法

First, the paper proves the well-posedness of the encryption and decryption problems, which provides theoretical bases for experiments of encryption and decryption; Then presents a fast iterative algorithm, which is proposed based on the special sparse structure of the coefficient matrix of the two-dimensional C-N difference scheme, and successfully experiments on images encryption and decryption; At the end, the security of the methods of images encryption and decryption based on the two-dimensional Pseudo -parabolic Partial Differential Equation is experimented and discussed particularly.

首先证明了基于二维连续模型的加、解密问题是适定的，为加、解密实验提供了理论依据；然后根据模型的二维C-N格式系数矩阵的特殊稀疏结构，给出快速迭代求解算法，并成功地进行了图像加、解密的数值试验；最后对基于二维伪抛物型方程的图像加、解密方法的安全性进行了详细的试验讨论。

In single acute toxicity test and joint toxicity test,the acute toxicity and joint toxicity of heavy metals Cu2+ and Cd2+ to paramecium was studied.

方法］通过单一急性毒性试验和联合毒性试验，研究了金属离子Cu2+和Cd2+对草履虫的急性毒性和联合毒性。

It realizes the global optimal computation via the local interacting agents with abilities of local perceptivity, competition and cooperation, self-learning etc. Then orthogonal design is introduced to generate an initial population of points that are scattered uniformly over the feasible solution space and to generate a crossover operator. As a result, the resulting algorithm is more robust and statistically sound. For high dimensional functions, a large memory is needed in generating an initial population with orthogonal design. To overcome this problem, a method called subspace partition is proposed, so that the memory is one tenth that of original one.

它以Multi-Agent系统为基础，通过Agent间的相互作用与每个Agent所具有的知识和自学习功能来提高算法的全局优化能力和收敛速度；同时利用正交试验设计方法产生较好的初始种群和设计正交交叉算子以获得更好的后代；针对正交试验设计产生初始化种群在函数维数很高时需很大存贮空间的缺点，提出了子空间分割法来产生所需的初始化种群，它只需要原来存贮空间的十分之一。

The new method is given to design the optimum profile modification curve design The effects of optimum profile gear in improving the dynamic performance of gear transmission are verified in the Gear Dynamic Performance Test Rig In this dissertation, the main study contents and creative results are shown as following: The influences on the gear transmission system caused by the gear's accumulated error (periodic error and harmonic error) are theoretically studied. A new method is developed to simulate the gear's harmonic error by using the 2-order MARKOV process A simulated model of the dynamic performance which is excited by the gear's accumulated error is obtained.

本文在前人大量研究的基础上，结合作者承担的国家自然科学基金项目"齿轮传动动态系统辨识与三维修形研究"和山东省自然科学基金项目"齿轮传动动态性能仿真及结构参数、齿形的优化修形"，采用理论和试验相结合的新思路，系统地研究了齿轮传动的动态性能，建立了能正确描述齿轮传动系统动态性能的仿真模型和系统辨识模型，给出了确定齿轮传动轮齿修形曲线的优化设计方法，利用自行研制的齿轮传动动态性能试验装置，验证了优化修形齿轮对提高齿轮传动动态性能的突出作用。

The contrast experimental analyses on the spray voltage, pinhead size and other influential factors are carried out.

在初步试验的基础上，利用正交试验的方法考察了海藻酸钠，羧甲基纤维素钠以及氯化钙的浓度对成囊过程中微胶囊膜厚，粒径等的影响。

In order to study the method and its capability of the borax ceramsite concrete as the layer of accumulation of heat of floor radiant heating,the borax ceramsite concrete was used to substitute for pisolite concrete as the layer of accumulation of heat in the floor radiant heating system during the construction of Lakeside Garden Buildings in Liaohua District.

目的研究硼泥陶粒混凝土作为低温热水地板辐射供暖系统蓄热层的作法及其性能。方法辽化湖畔花园小区住宅楼工程中，用硼泥陶粒混凝土代替豆石混凝土作低温热水地板辐射供暖系统蓄热层，取暖期内对试验工程进行温度监测实验。结果试验工程混凝土试块强度平均值为27.5 MPa，合格率为100%，厚度均在允许偏差内，合格率100%；外观鉴定混凝土表面无裂缝，并根据温度监测结果画出了取暖期内每天温度随时间变化的曲线图。结论用硼泥陶粒混凝土作低温热水地板辐射供暖系统的蓄热层，与用豆石混凝土相比，减轻了建筑物自重、减缓了传热速度、增强了房间的热稳定性

The reason of the higher value of quinoline insoluble material in coal pitch is analyzed through the determination theory of methyl benzene insoluble material.

针对在试验过程中发现煤沥青中喹啉不溶物分析结果偏高的现象，根据煤沥青中甲苯不溶物的测定原理，找到造成这种现象的原因，然后从不同的角度进行试验，最终摸索出一套分析煤沥青中喹啉不溶物含量的简单、经济、可行的方法。

Using inside artificial rain instrument, orthogonal experiment plan of three factors and three levels was adapted to research water spatial and temporal distribution of each point along slope under physical and chemical method applied.

利用室内人工降雨试验，采用3因素3水平正交试验设计方案，研究物理化学调控方法实施情况下坡面土体中水分的时空分布状况。

The finite element models of two types of machine guns are set up, mainly based on the 3-dimensional beam elements, partly based on boundary elements. Modal experiment plan of the machine guns is designed and their modal analysis experiments are done. The inherent properties of structural vibration and dynamic response properties for type-02 14.5 mm anti-aircraft machine gun and type-89 12.7mm machine guns are completely realized through the method combining theory and experiment, and many valuable conclusions are obtained.

建立了以三维梁单元为主，边界元为辅的高射机枪和重机枪有限元模型，设计了模态试验方案并进行了两支枪的试验模态分析，采用理论与实验相结合的分析方法，全面揭示了 02 式 14.5mm 单管高射机枪和 89 式 12.7mm 重机枪的结构振动固有特性和动力响应特性，获得了许多有价值的结论。

And 19. 4 from the big field with the 1: 1 ratio, and hence the best way for the improvement of planosol is to mix the Aw and B horizons in 1: 1 or 0.5: 1 ratio, meanwhile leaving the Ap horizon undisturbed.

采用人工模拟试验的方法进行白浆土心土混层改良试验结果证明：白浆土心土混层的最佳方案是：在不打乱白浆土肥沃表土层的前提下，把淀积层和白浆层按1∶1或0.5∶1比例混合。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新