冀东南堡凹陷基岩岩相学特征及储集性能

通过对基岩岩相学的观察研究，确定了冀东南堡凹陷基岩花岗质混合岩岩性，并给予适当的划分与命名，基岩储集性能为Ｖ型非储集层．     

中国秦岭地区卡林型金矿成矿模式

（１）中国秦岭地区卡林型金矿床在区域上的分布严格受印支－燕山期构造－岩浆带控制，区域上与Ｈｇ、Ｓｂ、Ａｓ矿密切共生；（２）主要赋矿地层为泥盆系，成矿时代２１４×１０６～１４２×１０６ａ；（３）主要容矿岩石为浅变质细碎屑岩，钠长碳酸盐角砾岩及碳硅泥质岩；（４）成矿物质（Ａｕ）主体来自深部；（５）成矿流体为岩浆热浪（主体）＋建造水＋大气降水组成的混合热液，成矿环境为中低温浅成环境；（６）依矿床形成深度和物理化学条件等差异，将其划分为深部带型、中部带型和浅部带型三亚类。     

Some inequalities for geominimal surface areas

The concept of geominimal surface area is first intro- duced, and then, the affine surface area projection inequality is given by Petty. In recent years, associated with geominimal surface area, Lutwak obtained some significant results containing the extended affine projection inequality. In this paper, combining with curvature image and combinations of convex bodies, we get some inequalities for geominimal surface areas. Furthermore, the integral form of geominimal surface area is obtained.     

在大学数学教学中渗透数学文化的思考

探讨了研究数学文化对大学数学教学的意义,从数学文化的角度研究了大学生应具有的数学素质,并提出了如何在数学基础课程的教学中体现数学文化的思想、培养和提高大学生的数学素质。     

Novel method of improving the alignment accuracy of SINS on revolving mounting base

In the process of initial alignment for a strapdown inertial navigation system (SINS) on a stationary base, the east gyro drift rate is an important factor affecting the alignment accuracy of the azimuth misalignment angle. When the Kalman filtering algorithm is adopted in initial alignment, it yields a constant error in the estimation of the azimuth misalignment angle because the east gyro drift rate cannot be estimated. To improve the alignment accuracy, a novel alignment method on revolving mounting base is proposed. The Kalman filtering algorithm of extending the measured values is studied. The theory of spectral condition number is utilized to analyze the degrees of observability of states. Simulation results show that the estimation accuracy of the azimuth misalignment angle is greatly improved through a revolving mounting base, and the proposed method is efficient in initial alignment for a medium accurate SINS.     

基于离散时间细胞神经网络的GSM均衡器

提出并讨论了用离散时间细胞神经网络(DTCNN)实现用于GSM系统均衡器的可能性,并基于对均衡算法的分析推出了相应细胞神经网络模板的设计方法,针对存在多径干扰的二值信号处理问题进行了计算机仿真,结果证明了这一想法是合理的。     

Experimental study on absorption of blade vibration of honeycomb seal and shunt injection

Honeycomb seals and shunt injection have been proposed to weaken the blade vibration. Honeycomb seals, as well as, smooth seals were tested with different seals' clearances and shrouded blades. The shunt injection was sprayed to the blade tip clearance in the reverse direction of the main flow. Experimental results showed that both honeycomb seals and shunt injection had the damping effect for blade vibration, and the blade vibration magnitude could be reduced by more than 25% and 17%, respectively. When the two methods were adopted synchronously, more than 1/3 of the blade vibration could be reduced. Consequently, adopting honeycomb seal and superinducing proper shunt injection are two useful ways to minimize vibration of the blade from the viewpoints of avoiding blade rupture and improving the rotor stability.     

在线滤油装置在变压器状态检修中的应用

文章以YT8400在线滤油装置为例,介绍了变压器油色谱在线监测装置在变压器检修中的应用及发展前景。     

遗传算法在捷联惯导初始对准中的应用研究

本文分析了捷联惯性导航系统（SINS）进行初始对准的基本原理,简要介绍了遗传算示的搜索过程,并将其用于SINS的初始对准之中。根据初始对准的本质构建了GA的适应度函数,确定了遗传算子,基于惯性器件的量测值对这一过程进行了计算机仿真。仿真结果表明,将GA用于SINS的初始对准,精度与常规方法相仿,但由于GA的并行性和简单性,使得对准时间大大减少,具有很大的优越性。     

燃煤固硫灰渣混凝土路面材料研究

降低农村公路造价具有重要的现实意义,利用地方工业固体废弃物是一种途径.通过对燃煤固硫灰渣胶凝系统的试验研究,结果表明:燃煤固硫灰渣表面疏松和阴离子聚合度低的特征,使其具有显著的火山灰效应,可与碱、硫酸盐激发剂组成胶凝系统,其中固硫灰渣占70%以上;掺加水泥和增大硫酸盐激发剂掺量能显著改善系统早期性能,硫酸盐掺量宜大于1.5%;燃煤固硫灰渣混凝土具有较好的强度性能和材料韧性,在农村公路中应用具有现实可行性.