基于Spring框架的Web Services系统整合与研究

Web Services通过集成第三方Web服务能够提高应用系统开发效率.但是传统的Web Services在开发中存在代码开发效率低、复用性差,而且可扩展性差.应用现在流行的轻量级Spring容器对Web Services进行系统整合,可大大提高开发效率,有效降低开发成本.     

非平衡与高频MOS电容的理论解析计算

对于非平衡时MOS结构电容的理论计算,本文提出了第一个假设,即少数载流子浓度为其初始热平衡浓度,并不随外加电压而变化,由此而得到非平衡情况的MOS结构电容的理论计算公式。对于高频时MOS结构电容的理论计算,提出了第二个假设,在φ≤φ_(min)区间,少数载流子浓度遵从玻尔兹曼统计分布。第三个假设是,在φ≥φ_(min)区间,少教载流子与外加电压呈线性关系。由此而得到高频情况整个区间的MOS结构电容的理论计算公式。将普遍公式应用到特殊点,所得结果与现有理论及实验结果一致。整个理论计算曲线与实验曲线符合很好。     

三维有限元数值模拟在DZ区块地应力连续剖面建立中的应用研究

DZ区块储层岩基质孔隙度、渗透率低,孔隙结构差,储层非均质性强,具有明显的非层状、地层地应力状态不明确等特点,针对该区域储层气藏特征与开发现状,在岩石力学参数以及地应力测试的基础上,应用三维有限元数值模拟方法,对该区域储层进行三维地应力场反演计算,从而建立该区块储层地应力连续剖面。     

PETROLEUM ACCUMULATIONS AND INVERSION STRUCTURES IN THE XIHU DEPRESSION,EAST CHINA SEA BASIN

The central inversion zone in the Xihu Depression, East China Sea, was formed during the Late Miocene. The entire Tertiary succession, nearly 10,000 m thick, has undergone inversion here. The succession is composed mainly of sandstones and mudstones with minor coals and non‐marine limestones. Hydrocarbons are present in a series of structural traps which formed as a result of inversion‐related deformation. Oil and gas exploration in the Xihu Depressions has demonstrated that at least 90% of the commercial reserves so far found occur in inversion‐related structural traps in the central inversion zone, mainly in Eocene (Pinghu Formation) and Oligocene (Huagang Formation) sandstone reservoirs. Previous studies have shown that structural traps are controlled by the intensity and style of inversion tectonics. However, the relationship between the geometry, kinematics and size of the inversion structures and the oil and gas accumulations is not well understood. In this paper, the factors controlling trap formation (and hydrocarbon acumulations) in the study area are considered. Data came from 2D reflection seismic and electic logs from a number of wells. Controlling factors include inversion fault activity rate, inversion rate and the thickness of sediments eroded as a result of inversion‐related uplift of the Tertiary succession. The results show that the best exploration targets are located in the southern part of the central inversion zone. This area has a relatively low inversion fault activity rate (average 3.0 m/Ma) and a low inversion rate (average 0.4); a relatively small thickness of sediments was eroded from the Miocene Longjing and Liulang Formations (< 400 m) and the Eocene Pinghu Formation. By contrast, the northern part of the central inversion zone has a relatively high inversion fault activity rate (average 6.8 m/Ma) and a high inversion rate (0.8), and greater thicknesses of sediments were erosively removed (up to 1600 m). This may have resulted in the less favourable preservation of traps and the large‐scale leakage of oil and gas. Most oil and gas accumulations occur in the southern part of the central inversion zone, especially in reservoirs in the Longjing, Liulang and Pinghu Formations.     

卫星导航自适应调零天线抗干扰算法研究

为了提高卫星导航接收机抗干扰能力,深入研究了应用于卫导自适应调零天线的多线性约束自适应调零算法。对现有功率倒置自适应算法进行改进,将阵列协方差矩阵分为干扰子空间和噪声子空间,通过对子空间的处理提高输出信干比,在不是很强的干扰信号方向上也形成较深"零陷"。此外,为了降低计算的难度,避免自相关矩阵求逆,采用了陡降算法。通过仿真分析,结果表明:所研究的自适应滤波算法能够提供较高的输出信干比,在干扰信号方向产生较深的"零陷",具有较好的干扰抑制能力。     

内筒式直流蒸发罐在制糖工业中的应用

为了降低糖工艺耗汽量，广东湛江糖厂把第１效蒸发罐改装面内筒式直流蒸发器，文中介绍了该罐的结构和应用，并对其进行了评价和分析，实践表明：虽然该罐使用时汽鼓温度为１４０℃，蒸发室温度为１３０℃，但没有糖分大量转化或焦化，认为：要想提高首效糖汁的蒸发温度，同时又要避免了工艺过程中的糖分损失，内筒式直流蒸发罐将是一种新型的设备供选择。     

A high-frequency eddy current method for the thickness measurement of thin metallic foils using ferrite-core transmission systems

An eddy current system is described that allows the simultaneous measurement of thickness and electrical conductivity of thin nonmagnetic foils. The transmission coil systems used in the experiments consist of two coils with ferrite-cup cores. Because of the high measurement frequencies (up to 60 MHz), a special shielding of the coils including metallic meshes between coil and test-foil is necessary. The measured frequency responses of amplitude and phase angle are compared to the results of finite-element calculations, and excellent agreement is found for different test-foils with thickness between 10 and 200 μm. The optimization of the coil shape and the influence of the coil-to-coil spacing is discussed, and two alternatives for the reduction of the position sensitivity of the ferrite-core system are proposed. Finally, an inversion procedure that permits the fast and accurate estimation of thickness and conductivity from the complex output voltage is presented.     

基于积分方程的低数据量的快速反演

本文将变形玻昂迭代法（ＤＢＩＭ）并结合数值模式匹配法（ＮＭＭ）用于实际工程中的深感应测井仪（６ＦＦ４０）的低信息量的反演和剖面成像。在反演迭代过程中,用Ｔｉｋｈｏｎｏｖ正则化求解病态问题,利用ＮＭＭ解的ｚ向解析性质,避免了双重数值积分,同时提高了计算效率和反演质量。文中利用不完备的低信息量工程数据对地层电参数进行了反演,表明该方法实际工程应用的潜力。     

辫状河三角洲前缘沉积模式及砂体预测──以吐哈盆地温米油田中侏罗统为例

沉积成熟度低、富含牵引流成因的流水构造是辫状河三角洲的沉积特征。以吐哈盆地温米油田中侏罗统三间房组为例,对辫状河三角洲前缘砂体特征分析认为：湖盆可容空间较小时,辫状河三角洲相对发育,水下分支河道横向迁移频繁,易形成席状分布的砂体(水下分支河道复合作);可容空间增大时,辫状河三角洲相对不发育,这时水下分支河道延伸不远,河道砂体较孤立,河口砂坝相对比较发育。利用地震测井约束反演不仅提高了原始资料的垂向分辨率,而且可预测砂体的横向分布,使地下地质情况的认识从井孔扩展到井间,从一维扩展到二维和三维空间。     

基于改进模糊自适应的机械手阻抗控制研究

为解决因机械手非线性不确定系统、负载变化及力传感器测量不准确等引起的轨迹位置和接触力的控制问题,研究了一种反演自适应模糊控制方法。在目标阻抗控制模型上引入改进的力补偿以及自适应控制律,并采用Lyapunov函数证明了控制系统的稳定性,同时利用模糊理论设计了模糊控制系统完成目标阻抗参数的自整定,实现了无需依赖信息模型的力/位控制。以简化的二自由度机械手模型完成仿真实验。结果表明:该控制方法具有较好的力/位控制性能,系统鲁棒性较好。