可建立的

Firstly,by using the estimating methodfor the compact embedding operators(from weighted Sobolev space to the weighted〓space),we obtain a necessary and sufficient condition for the discreteness of thespectrum of certain differential operators.Secondly,based on the property of thespectrum of difinitizable operators on the Krein space,we consider the left definitedifferential equations with middle deficiency indices,and give a completecharacterization for self-adjoint(J-self-adjoint)differential operators in theindefinite inner product space 〓.Especially,we prove that all the J-self-adjoint differential operators are definitizable.

我们首先运用加权Sobolev空间到加权〓空间嵌入算子紧性的判别方法，证明一类加权自伴微分算子具有离散谱的充要条件；然后，基于Krein空间上可定化算子谱的性质，对于具中间亏指数的左定型微分方程，建立其相应的微分算式在不定度规空间〓上所生成自伴算子的完备性刻画（特别证明了J-自伴微分算子具有可定化性）。

The Chinese strategic culture is built on the basic traditional concepts of "benevolence","courtesy","virtue","peace", etc. Since the Third Plenary Session of the 11th party Central Committee, Deng Xiaoping has changed the outdate strategic judgement resolutely, liberating the strategic thinking of China from the frames of war and revolution, bringing it into the new tracks of peace and development.

中国战略文化建立在"仁"、"礼"、"德"、"和"等传统基础观念之上，十一届三中全会以来，邓小平毅然改变了过时的战略判断，把中国的战略思维从战争与革命的框架之中解放出来，纳入到和平与发展的新轨道之上，战争的可避免性、对手的可合作性、暴力效用的降低都是中国战略文化变革的重要表现，并以新安全观的提出为主要标志。

Based on the algorithm principle of curve,taking the Bezier curve for example,in the condition of VC++ 6.0,through creating the virtual grid and simulating the computer's pels points,with the alternant control technology and the visualization technology,a brand-new visualization teaching demonstration system of computer graphics is developed.

以开发具有更加良好认知意义的教学软件为目标，摒弃了计算机图形学传统的教学方式，从曲线的算法原理出发，以Bezier曲线为例，在VC++6.0的开发环境中，通过建立虚拟栅格和模拟计算机的"像素点"，运用了交互控制技术，动态演示的可视化技术，开发出了一套全新的计算机图形学可视化教学演示系统。

We mainly research on more complicated reparable system: Convert Fault Tree model based on factor analysis to SPN of system; Describe the running of reparable system by use of state transition.

这里我们主要针对较为复杂的可修复系统部分进行重点研究，将故障树转化为大系统的随机Petri网模型，利用状态转移来描述可修系统部分的运行情况，由其状态转移概率建立系统的状态方程，从而得到系统的稳态可靠性，再结合不可修系统部分对整个大系统进行全面综合的分析，提出了基于随机Petri网的复杂大系统的可靠性分析方法。

Department of Physical Education,Qinhuangdao Foreign Language Professional College,Qinhuangdao,Hebei,066311AbstractThis paper has discussed the necessity of using roller skate teaching aids in teaching process.Meanwhile introducing the method,which provides the security and effective protection for students with the roller skate and facilitating roller skate teaching as well.

使用助学器辅助教学具有以下作用：①对学生掌握正确的蹬地技术有很好的帮助作用，可在较短时间内帮助学生建立正确动作的动力定型，明显降低蹬地错误动作的出现率；②可有效消除学生怕摔倒的心理障碍，有利于学生全身心地学习和体会技术动作的要求和要领，为掌握正确技术动作提供了保证。

The empirical mode decomposition method is introduced to extract the trend item of gyro's drift, but the local mean estimation isn't precision and the end effects exist in the conventional EMD method. The two-tap adaptive time-varying filter and the adaptive border estimation are used to modify the EMD. After the trend extraction, the method of time series analysis is used to make the autoregressive moving average model for stationary time series.

根据陀螺漂移的特性，提出采用经验模分解的方法对其趋势项进行提取，但传统的经验模分解方法存在局部均值估值不准，插值过程存在端点效应的问题，因此，本文又引入二拍自适应滤波及自适应边界估值来对原方法加以改进；在成功提取趋势项后，通过采用时间序列的分析方法，建立了陀螺漂移平稳时间序列的自回归滑动平均模型；并得出陀螺漂移模型可近似为常值加一阶马尔可夫过程这样一个结论。

At last, all related problems due to ship type and towing speed influencing the quality of captured images and results were discussed. A ship model with V-shape bottom and protruding keel might cause some disadvantages for PIV measurements. The use of longer laser light ducts extending deeper is a possible solution. A ship model with light yellow paint will cause the unproportionate of light and will cause white background on captured images. It is suggested to re-paint the ship model in black or dark colors to solve this problem. In high-speed test conditions, a ship model's bow waves entrain large amount of air bubbles into water and those bubbles will block the view of camera causing some random black spots in the images. Thus, it is necessary to remove the useless black spot data and repeat the same test condition if statistics requires enough number of images.

本文讨论建立此系统之技术及实验方法，设备的架置方式和配置为一可调性调整之开放式架构，质点施放方法以一自制的施放架於实验前先布置於测试段中，并制定一实验流程规范，再分别针对实验所得滑航型及排水量型船模的流线方向及切流线方向各不同位置及船速之速度进行流场分析；实验结果发现不同船型会造成不同的实验困难：船形上突起之龙骨及V形船底会遮住照明光线，可利用较深之导管调整光页角度改善；而浅色船模表面会造成光线的不均匀，可以更改船模涂装颜色改善；高速实验的气泡会不定点的遮住光线，须先除去无资料区域并使用更多资料组数来改善。

In the cyclization process,α-acylamino radicals preferred to attack acylsilanes from the face opposite to the β-substituent, and the stereoselectivity of the bridgehead is excellent. The orientation of the hydroxy group formed in the cyclization process was mainly exo.

生物碱架桥上立体化学的建立，可透过环上取代基立体障碍的影响，使得环化过程只会从立障较小的一面进行，因此可得到单一立体化学的结果，而环化所形成的羟基则是以exo的产物为主。

On the basis of the results obtained in the present study, the opinion on bamboo evolution were proposed:(1) Bamboos are monophyletic group,(2) Unicaespitose bamboo are not the original bamboo group,(3) Bamboos of genus Arundinaria are multiphyletic group, and (4) Bamboos of genus Phyllostachys are multiphyletic group.

同时对竹类植物分类系统提出新的看法：(1)在目前生殖体特征仍不完全的情况下，以地下茎为基础建立竹子分类系统或对现有分类系统进行修订是合理的，需要对地下茎进行更为详尽的研究并辅以地上秆的高度等方面的信息；(2)青篱竹属复合群中的现有划分方法可依据分子进化研究的结果作适当调整，如可依据MOC1分析的结果划分为低矮灌木、较高灌木和乔木3种类型。

On the basis of analyzing the reason bringing on electricity charge arrears and utilizing the gettable data, the key variables impacting the charge arrears, which are needed in arrear risk recognition model, are designed; by means of logistic regression theory and method that can deal with bi-category problem, a model that can recognize the possibility extent of electric power clients' charge arrears is established.

在分析了引起电力客户欠费原因的基础上，利用可以获得的数据设计了欠费风险识别模型中的关键影响变量，并运用Logistic回归理论与方法建立了可识别电力客户欠费可能性大小的模型，根据所掌握的客户最新资料可提前预测出其欠费的违约概率，从而改变了原来的事后欠费管理的被动局面，达到了减少电力客户欠费风险的目的。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。