基于免疫算法和层次支持向量机的人脸识别方法

给出了一种基于免疫算法及层次支持向量机的人脸识别方法,该方法先利用Gabor小泼变换提取待识别的人脸图像的特征向量,然后利用层次支持向量机初步判断该图像最可能所属的人,最后利用免疫算法对待识别的人脸图像进行确认.实验表明,该算法效果较佳.     

Effect of FTY720 and ICAM-1 mAb mono and combination therapy in cardiac allo-transplantation in rats

Objective To observe the effect of FTY720 and ICAM-1 mAb mono and combination therapy in cardiac silo-transplantation in rats. Methods Rats were randomly assigned to 9 groups, heart allo-transplantation were performed in abdominal site with micro-surgical technique. Recipients with allografts were treated with different doses of FTY720 and(or) ICAM-1 mAb. Graft survival, histopathology andlevel of serum IL-2, IFN-γ, IL-4, IL-10were investigated. Results Low doses of FTY720 (lmg/kg) combined with ICAM-1 mAb achieved synergistic effect in the prolongation of cardiac graft survival, combination index(CD =0.67. Conclusion Concomitant therapy of FTY720 and ICAM-1 mAb achieved a synergistic effect in the prolongation of heart allograft survival in rats.     

四元数分形的生成与研究

为实现三维分形,应用四元数作为迭代变量生成四维Julia集。在介绍了如何实现三维显示以及迭代方法选择之后,详细说明了生成四元数分形的具体过程,并给出图形实例。因为改进了逃逸时间算法的判别标准,因此,目标集合是边界点集。最后通过观察与分析,总结了四元数Julia集的某些特征,比较了它与复平面Julia集异同点,说明了两者之间的联系。     

阳极焙烧炉重油温度智能变参数PID控制系统

利用自适应免疫遗传算法全局搜索获取最优的可变PID参数的方法,解决了阳极焙烧炉重油温度的精确控制问题。应用结果表明,该重油温度控制系统优于原有传统的PID控制系统,并具有良好的可靠性、自适应性和鲁棒性,为重油的充分燃烧创造了有利的前提条件。     

基于小生境技术的多样性抗体生成算法

新的入侵方法以及网络计算环境的不断变化,使得入侵越来越难以防范.因此应用人体免疫机制构建下一代入侵检测系统成为一个新的研究热点.本文采用一种新的抗原－抗体编码方法,并在此基础上,提出一种基于共享函数的小生境遗传算法,用来产生多样性的抗体基因,最后给出多样性评价函数以验证算法的有效性.实验结果表明:该算法能够使抗体在演化过程中保持较好的多样性.     

Realization of a self-recognition algorithm based on the biological immune system

As the use of the computer is popularized, the damage from computer viruses and hacking by malicious users is increasing rapidly. To block the hacking that is an intrusion into a person's computer, and the viruses that destroy data, a study into an intrusion detection and virus detection system based on the biological immune system is in progress. In this article, we describe a model of positive and negative selection for self-recognition, which has a similar function to the cytotoxic T cells that play an important role in the biological immune system. We propose a self/nonself discrimination algorithm for a computer system, which will the important when we detect data infected by a computer virus, of data modified by an intrusion from outside. We also show the validity and effectiveness of the proposed self-recognition algorithm by a computer simulation of some infected data obtained from cell changes and string changes in the self-file. This work was presented, in part, at the Seventh International Symposium on Artificial Life and Robotics, Oita, Japan, January 16–18, 2002     

结合免疫功能的遗传算法及其在技能模糊控制中的应用

技能模糊控制系统的自动化是模糊控制范畴的一个重要研究方向，其意义在于这种控制普遍存在于生产过程和人类的日常生活中．但是，如何依靠运动参数而不是运动或行为规则来进行控制，这个课题一直未能很好的解决．本文提出利用基于免疫机制的遗传算法进行隶属度函数的学习，同时简化运动方程，并通过实例验证了该方法的有效性．     

免疫遗传算法的改进及其在模糊控制中的应用研究

本文对免疫遗传算法加以改进后，应用于多变量模糊控制器的模糊规则提取．研究结果表明：改进后免疫遗传算法既能有效克服用遗传算法筛选模糊规则造成的早熟现象，又能充分利用现有经验，对学习过程进行适当引导，加快收敛速度．     

Automation of cytokine flow cytometry assays

Cytokine flow cytometry (CFC) is a multiparameter assay of antigen-specific T cell function, potentially useful in the monitoring of experimental vaccines and progression of infectious diseases and cancer. Automation of CFC assays would greatly facilitate their use in clinical trials and involves several components. We describe here the migration of these assays to 96-well plates, the use of sample-handling robotics, and the use of lyophilized antigen and antibody plates to help automate CFC. Together, these elements can produce an integrated system capable of walkaway automation of an entire assay, resulting in the reproducible processing of potentially hundreds of samples per day. Implementation of such systems has begun to be undertaken by our group and others.     

Comparison of Operant Escape and Innate Reflex Responses to Nociceptive Skin Temperatures Produced by Heat and Cold Stimulation of Rats.

In behavioral tests, rats performed learned escape responses to thermal stimulation of the paws by 44.0. 47.0. or 0.3 degrees C. Licking, guarding, and jumping reflexes were evaluated at these temperatures. The frequency, latency, and duration of escape and reflex responses were compared and were related to hind-paw skin temperatures measured during stimulation of awake and anesthetized rats. The duration and latency of escape from heat were appropriately related to stimulus intensity. Escape occurred reliably for each intensity. Reflexes occurred unreliably and at long latency to 44.0 or 0.3 degrees C and were not appropriately related to heat intensity. The reflexes were relatively insensitive to thermal nociceptive stimulation other than heating of the skin at a high rate. (PsycINFO Database Record (c) 2010 APA, all rights reserved)