稳定性

Stability shows asymptotic behaviors of a system. Chapter 3 discusses Sobolev-Galpern equation with pseudoparabolic characteristic, studies the stability under disturbance of the initial value, i.e., the Lyapunov stability problem, and shows the global asymptotic behavior of the trivial solution.

在第三章，本文考(来源：Ab6BC论文网www.abclunwen.com)察了具有伪抛物特性的Sobolev-Galpern方程关于初始值扰动下的稳定性问题，即Lyapunov稳定性问题，论证了其平凡解的全局渐近稳定性。

The coming forth of virtual prototyping technology presents a new approach to study gun stability, and based on establishment of dynamic model of selections of structure parameters, the effects of stiffness and damper of elevating mechanism, stiffness and damper of trail, stiffness and damper of soil, parity of recoil mass and parity of trunnion position on firing stability are first studied with virtual prototype of gun in this paper. An improved equation of sensitivity analysis is provided, and the important degrees of factors with different dimensions can be compared.

虚拟样机技术的出现为火炮射击稳定性研究提供了新的方法，文中在建立火炮动力学模型的基础上，通过选取火炮结构参数对火炮射击稳定性进行研究，利用虚拟样机分析高低机刚度和阻尼、大架刚度和阻尼、土壤介质刚度和阻尼、后坐品质偏心和耳轴位置偏心对火炮射击稳定性的影响。

The results showed that the solubility of lotus starch was low, the turgidity was closed to sweet potato starch, accordingly was a restrictive swelling starch. A lower transparency (10.4%) was researched in the lotus-seed starch pastes, condensation speed was faster, but it decreased at acidic or alkaline condition. Stronger freeze-thaw stability and lower gel strength was researched in it. It can be from the Brabender viscosity that the lotus-seed starch has a higher gelatinization temperature (77.1℃), better thermostability, stronger retrogradation, weaker cold viscosity stability.

试验结果表明：莲子淀粉的溶解度较低，膨润力接近甘薯淀粉，属限制型膨胀淀粉；莲子淀粉糊的透明度较低（10.4%），凝沉速度较快，在酸性或碱性条件下凝沉速度减缓；其凝胶具有较强的冻融稳定性和较低的凝胶强度；布拉班德粘度曲线显示，莲子淀粉的糊化温度较高达77.1℃，热稳定性好，凝沉性强，冷粘度稳定性差。

The main factors of affecting the stability of submarine pipeline are analyzed, and the result shows: effect of Wake has disadvantage for pipeline stability, weight of per length unit pipeline is a important factor affect the stability of pipeline.

根据所建模型对影响裸置管线横向稳定性的各项因素分析表明，忽略尾流的影响会严重高估裸置管线的在位稳定性，影响管线稳定性最主要的因素是单位长度管线重量。

First, the Lyapunov functional and variation of constants method are adopted to study the effect that Sigmoid function and the relation of resistance, capacitance and current in Hopfield neural networks have on the stability of networks. The stability criterion constructed by physics parameters is obtained. Thus how the constrained relation of physics parameters affects the stability of Hopfielf neural networks is clear. Based on the study above, the perturbation model of recurrent neural networks is constructed. And the theorems of the existence of solution of perturbation model are presented.

首先，采用Lyapunov泛函法和常数变易法研究Hopfield神经网络中给出的电阻、电容、电流之间的关系以及Sigmoid函数对网络稳定性的影响规律，得出仅由物理模型参数构成的稳定性判据，从而弄清物理模型参数约束关系对Hopfield神经网络稳定性所起的作用，在此基础上，构建了递归神经网络的扰动模型，并通过讨论扰动模型解的存在性问题，给出递归神经网络扰动模型解的存在性定理。

Turthermore, the technological measures in ensuring beer abiological Stability were given in the production of Saecharification, fermentation, filter and filling and package.

就啤酒酿造过程中的蛋白质、多酚、氧物质对啤酒非生物稳定性的影响机理进行了分析阐述，说明了高分子蛋白质和多酚物质是影响啤酒非生物稳定性的主要因素；并就糖化、发酵、过滤、灌装各生产工序提出了工艺控制措施以保证啤酒的非生物稳定性。

When AlCA reacts with HPAM, the lower the pH value of AlCA, the faster the rate of gelling reaction. At a certain pH value, the smaller the ratio of /, the slower the rate of the gelling reaction.

结果表明，柠檬酸铝在碱性条件下的稳定性、热稳定性及室温下的放置稳定性均随／的减小而提高，pH值过高或过低的柠檬酸铝均不能长期稳定存在。

For the FCCU with a high efficient regenerator, the expressions of catalyst circulating rate in the spent catalyst pipe, the regenerated catalyst pipe and the pipe from the second stage of the regenerator to the first one were obtained on the basis of the pressure balan...

在此基础上，建立了催化剂藏量系统的动态模型及其简化的线性模型。由线性模型和控制系统稳定性理论证明，不作任何控制时催化剂藏量的稳定性是有条件的。给出了该系统的催化剂藏量稳定性判据，并用反应再生系统仿真实验验证了这一判据

Firstly the thesis made study on stress field、 displacement field、 yielding part in colluvial deposit and accretion before water accumulated and after water accumulated and made the conclusion that slope failure will take place easier in colluvial deposit than in accretion.The stability computation indicates that stability will decline either for colluvial deposit or accretion bank and decline more rapidly in colluvial deposit than accretion bank.

论文首先对崩坡积、冲洪积岸坡蓄水前后的应力场、位移场及塑性区的变化进行对比，结论为崩坡积体岸坡遇水比冲洪积体岸坡更容易发生破坏；通过对岸坡的稳定性计算，两种岸坡在蓄水后和水位骤降时的稳定性均明显降低，崩坡积体岸坡降低更为显著，且其天然稳定性较冲洪积岸坡为差。

The UV and IR spectroscopic studies of the monomer films showed that the photoreaction ratio of monomer (about 50%) was higher than the corresponding photosensitive polymer (about 10%, PVCi). The polarized IR spectra proved that obvious anisotropic absorption was displayed in the irradiated photosensitive film. With polarizing microscopy method, we found that these kinds of photoalignment films exhibited good alignment ability, and the stability of the photoalignment film could reach about 100℃. 2 A photosensitive self-assembled monolayer was fabricated that contained photo-cycloadditable groups, such as, coumarin and cinnamate. The reaction process were detected by contact angle method because the IR absorption of monolayer was very weak. The photosensitive self-assembled monolayer promote uniform alignment of nematic liquid crystals by LPUV, and it thermal stability could reach about 130℃. 3 A cationic bolaform amphiphiles was synthesized that had two photosensitive double bonds, and can be polymerized by ultraviolet. A layer-by-layer self-assembled deposition film was prepared in aqueous solution by using this material and poly (sodium 4-styrenesulfonate). The UV-Vis. spectra proved that the multilayers film was uniform and layer-by-layer. When LPUV irradiated the film, the photopolymerizable double bond underwent [2+2] cycloaddition, and the production of the reaction distributed along the polarized direction of incident LPUV. Polarized UV-Vis. spectra indicated that the irradiated self-assembled multiplayer film was anisotropic, and the dichromic ration is about 0.09, it is higher than the spin-coating method of photosensitive polymer or monomer. We used this anisotropic film as alignment layer of nematic liquid crystals, and obtained a uniform and stability alignment result, the static contrast ratio is about 100, which is very close to application of liquid crystal device. This thesis is an instance that the photochemical material was used in the physics region of liquid crystals, the route that was from photosensitive monomer, self-assembled monolayer film to self-assembled multiplayer film was undergone, by this logical research method photoailgnment of liquid crystal was extended and consummated.

围绕上述思路开展了如下工作：1合成了三种可进行光二聚反应的光敏小分子单体，LPUV 辐照制作了光控取向膜；用紫外-可见光谱法和红外光谱法分析了薄膜中的光化学反应，发现小分子的光反应程度可达到50%以上，至少比光敏高分子高出5倍；薄膜的偏振红外光谱证实，经过LPUV 辐照后薄膜出现了明显的各向异性；将小分子光控取向膜制成液晶器件，在偏光显微镜下观察看到均匀一致的液晶取向；并且热稳定性达到100℃左右，接近实用化要求。2制备了含肉桂酸、香豆素基团的自组装单层膜；采用接触角的方法监测自组装反应的动力学过程；紫外-可见光谱证实了自组装单层膜在石英基板表面形成；自组装单层膜经LPUV 辐照后能诱导液晶均匀取向，而且热稳定性可达130℃，热稳定性进一步提高。3合成了含有光敏双键的双季铵盐，在水溶液状态下将它和聚乙烯基苯磺酸钠沉积生成layer-by-layer 自组装多层膜，紫外-可见光谱证实这是一个逐层均匀的沉积；在LPUV 照射下，自组装膜中的光敏双键按照偏振方向发生[2+2]环加成反应，形成取向膜，用二向色性值评价的分子取向度高于高分子及小分子光控取向膜的水平；实验证明用自组装多层膜制成的液晶器件亮暗态均匀，静态对比度约为100，达到实用化器件的水平。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。