基于规则和统计的中文自动文摘系统

自动文摘是自然语言处理领域里一个重要课题,本文在传统方法基础上提出了一种中文自动文摘的方法。在篇章结构分析里,我们提出了基于连续段落相似度的主题划分算法,使生成的文摘更具内容全面性与结构平衡性。同时结合了若干规则对生成的文摘初稿进行可读性加工处理,使最终生成的文摘更具可读性。最后提出了一种新的文摘评价方法(F-new-measure)对系统进行测试。系统测试表明该方法在不同文摘压缩率时,评价值均较为稳定。     

高强度铁道车辆用钢的焊接研究

研究了宝钢高强度铁道车辆用钢的焊接性。针对焊接材料熔敷金属、焊接接头塑韧性不能满足新型铁道车辆焊接中梁制造要求的现状，开发了新的配套气体保护焊耐候焊丝。结果表明，新开发焊丝的熔敷金属及其焊接接头，不但强度高，抗焊接冷裂能力强，塑性好，-40℃的低温冲击性能Axv≥60J，而且具有高耐候性。该钢种与焊丝已用于铁道车辆新车型的试制。     

Fuzzy logic control of vehicle suspensions with dry friction nonlinearity

We design and investigate the performance of fuzzy logic-controlled (FLC) active suspensions on a nonlinear vehicle model with four degrees of freedom, without causing any degeneration in suspension working limits. Force actuators were mounted parallel to the suspensions. In this new approach, linear combinations of the vertical velocities of the suspension ends and accelerations of the points of connection of the suspension to the body have been used as input variables. The study clearly demonstrates the effectiveness of the fuzzy logic controller for active suspension systems. Suspension working space degeneration is the most important problem in various applications. Decreasing the amplitudes of vehicle body vibrations improves ride comfort. Body bounce and pitch motion of the vehicle are presented both in time domain when travelling over a ramp-step road profile and in frequency domain. The results are compared with those of uncontrolled systems. At the end of this study, the performance and the advantage of the suggested approach and the improvement in ride comfort are discussed.     

飞轮贮能电池的发展与应用

介绍了飞轮贮能电池作为一种新概念电池所具有的优点：比能量、比功率大，寿命长，无二次污染；概括了飞轮储能电池所涉及的相关技术领域；对国内外飞轮储能技术的发展现状、主要应用领域和发展趋向进行了详细的论述。     

电力设备绝缘的数字信号处理技术

外施交流电压是电力设备绝缘检测的一种重要的方法，文章论述了交流电压下电力设备绝缘计算机检测下数字信号的处理技术。     

汽车被动安全性研究的三维乘员多体系统模型

采用多刚体系统动力学中的Ｒ－Ｗ方法建立了用于模拟汽车碰撞过程中乘员运动学、动力学响应的三维人体模型，以美国联邦机动车辆安全标准定义的Ｐａｒｔ５７２Ｄ型假人为例，对其前碰中的运动进行了模拟，并通过试验验证了该模型的正确性。     

Polarization Phase-Based Method For Material Classification In Computer Vision

A robust and accurate polarization phase-based technique for material classification is presented. The novelty of this technique is three-fold in (i) its theoretical development, (ii) application, and, (iii) experimental implementation. The concept of phase of polarization of a light wave is introduced to computer vision for discrimination between materials according to their intrinsic electrical conductivity, such as distinguishing conducting metals, and poorly conducting dielectrics. Previous work has used intensity, color and polarization component ratios. This new method is based on the physical principle that metals retard orthogonal components of light upon reflection while dielectrics do not. This method has significant complementary advantages with respect to existing techniques, is computationally efficient, and can be easily implemented with existing imaging technology. Experiments for real circuit board inspection, nonconductive and conductive glass, and, outdoor object recognition have been performed to demonstrate its accuracy and potential capabilities.     

THEIL不等系数法在水下自航器仿真模型验证中的应用

该文讨论了ＴＨＥＩＬ不等系数法在水下自航器仿真模型验证使用时的有关问题，提出两种模型验证方案，通过数字仿真的方法讨论了ＴＨＥＩＬ不等系数对初值的不确定，随机测量噪声，不同验模方这杂的适用性。     

Polarization control scheme for surface plasmon and optical guided mode control detection

A technique based on what is known as polarizer–compensator–sample–analyzer (PCSA) scheme in ellipsometry, combined with the Kretschmann configuration to excite plasmon and waveguided modes is described. The system allows the control of the polarization state of the reflected light and is shown to have higher sensitivity than the measurement of only the amplitude of the reflected light. We show the response of the system to variations in temperature and small changes in the refractive index of a liquid.     

基于统计的中文文本主题自动提取研究

文本主题自动提取是一种很有实用价值的技术，它可以有效地浓缩整个web页面，解决无线网络终端由于显示屏太小而无法显示整个网页的难题。总结了目前有关文本主题提取方面的研究成果，设计了一个特征词加权函数，在此函数中考虑了词所跨的段落数因子，同时采用非线性函数描述词长因子和词所跨的段落数因子的作用，并将加权函数应用于主题自动提取。实现了一个中文主题自动提取系统原型，通过对文本集的测试验证了加权函数的有效性。