快速汉克尔变换及光束均匀化

介绍快速汉克尔变换，以及它在二元光学设计中的应用，并就光束均匀化问题进行了数值模拟，结果表明快速汉克尔变换算法是一种能用于二元光学设计的有效算法。     

用参数泵分步结晶制取精萘的新工艺及放大

采用参数泵分步结晶工艺，开发了直立弹状流气泡管结晶器，由工业萘提纯制取精萘。实验室研究和放大试验的研究表明，产品纯度大于９９％，收率大于９２．５％。弹状气泡强化了传热和传质过程，流体的均布是放大过程的关键。     

我国炼油技术开发的若干思考与建议

分析了我国炼油工业面临的挑战，世界炼油工业的发展趋势，提出了我国炼油技术开发要围绕符合国情的清洁燃料生产技术，炼油与化工结合的炼油技术，适合现有炼油装置技术改造、提高技术水平，降低加工成本的技术，渣油转化技术，煤制油，天然气制油技术，炼油厂智能化的技术，减少炼油厂烟尘排放的技术等7个方面开展工作的具体建议。     

重油催化裂化装置的技术改造

介绍了福建炼油化工有限公司重油催化裂化装置自开工投产以来存在的问题，以及针对这些问题进行改造和改造后所取得的成效，如针对原料重质化、重金属含量高，如何提高产品收率；催化剂跑损，第一、二段再生器烟气混合后发生尾燃的现象以及汽提效率、烧焦效果等问题得到了根本的解决。     

基于BP神经网络的心电图ST段的模式识别

心电图ST段对心脏疾病的诊断具有重要意义.在正确读取采集于郑州大学一附院的运动心电图数据基础上,利用小波变换更准确地确定其ST段的起始和终止位置,初步探讨了BP神经网络用于心电图ST段识别的方法,并用此方法识别出心电图ST段的三种类型-正常、水平压低和抬高.实验结果较好.     

Optical pattern recognition using two-channel joint transform correlation

A new joint transform correlation (JTC) technique, named two-channel JTC (TJTC), is proposed in this paper for optical pattern recognition applications. The TJTC technique independently evaluates the autocorrelation and crosscorrelation values of the reference and the target images and employs a modified decision algorithm. In addition, optical threshold operation and fringe-adjusted filter are incorporated in the proposed technique to enhance the correlation output and to improve the discrimination performance. The proposed technique shows better recognition performance compared to existing JTC techniques. Computer simulation are presented to investigate the salient features of the proposed TJTC technique with noise-free as well as noisy input scenes. The text was submitted by the authors in English.     

Determining the characteristics of systems with multiple inputs and multiple outputs

A simple and computationally efficient method of determining the transfer function and other characteristics of systems with multiple inputs and multiple outputs (MIMO systems) described by autoregression equations is proposed. The method is based on the use of the discrete Fourier transformation. The algorithm is highly suitable for computer implementation. The efficiency and simplicity of the method are illustrated using the example of a system with three inputs and three outputs. The proposed concept may be applied to systems described by the autoregression sliding mean.