MP16用于无刷直流电机的控制

介绍了一种专用微处理控制器MC68HC708MP16(简称MP16)在无刷直流电机控制中的应用。     

电工电子实验教学改革

本文以基于Multisim的电工电子网上虚拟实验室为例,分别阐述了虚拟实验室的优缺点,提出虚拟实验室不仅不能取代传统实验室,相反还要加强传统实验室的建设。对虚拟实验室要做到合理利用,虚实结合,更好地为实验教学和应用型人才培养服务。     

摩托车电子点火专用集成电路LZ4213GP及其应用

本文介绍了摩托车电子点火控制器专用集成电路ＬＺ４２１３ＧＰ的内部原理框图，并给出了其典型应用。     

交叉的边缘学科是新兴的学科增长点

基于国家产业结构调整引发学科专业调整的政策,分析了面临的新形势和现状,以我校2001级学生为试点,进行交叉学科——生物医学工程专业的教学研究。结论为:交叉学科是新兴的学科增长点,生命科学类专业可能是继信息类专业后最热门的专业。     

交叉的边缘学科是新兴的学科增长点

基于国家产业结构调整引发学科专业调整的政策，分析了面临的新形势和现状，以我校2001级学生为试点，进行交叉学科——生物医学工程专业的教学研究．结论为：交叉学科是新兴的学科增长点，生命科学类专业可能是继信息类专业后最热门的专业。     

Development of Accurate/Advanced Radiotherapy Treatment Planning and Quality Assurance System (ARTS)

A prototype of accurate/advanced radiotherapy treatment planning and quality assurance system (ARTS) is developed and key technical issues related to the improvement of the treatment accuracy is studied. After a brief introduction to the prototype of ARTS, the advanced development in key technical issues is presented, including image data processing and human body modeling, fast and accurate hybrid dose calculation, multi-objective optimization of inverse planning, intelligent patient positioning, and dose verification.     

基于遗传算法的BP神经网络在图像压缩中的应用

以神经网络和遗传算法为代表的进化算法都基于智能信息处理的理论,但是各自都存在一些缺陷.设计并实现了基于遗传算法的BP神经网络算法BP-GA,该算法将遗传算法和BP算法相结合,用基于实数编码的遗传算法优化神经网络的权值后,应用于图像压缩.实验证明,利用此混合神经网络进行图像压缩,压缩比高,图像恢复质量效果好.     

目标函数设置对放疗逆向计划多目标优化过程的影响

目前放疗逆向计划中常用的目标函数有两种:基于剂量分布的目标函数和基于剂量．体积直方图（DVH）的目标函数。实际系统都基于单目标优化算法进行,不考虑逆向计划的多目标性。在Pareto多目标优化理论的基础上,研究逆向计划的目标函数设置问题,比较基于剂量分布的目标函数和基于DVH的目标函数对多目标优化过程的影响,包括优化时间、收敛性和存在的问题等,为逆向计划过程中多目标优化目标函数的设置提供依据。There are two kinds of objective functions in radiotherapy inverse planning: dose distribution-based and Dose-Volume Histogram （DVH）-based functions. The treatment planning in our days is still a trial and error process because the multi-objective problem is solved by transforming it into a single objective problem using a specific set of weights for each object. This work investigates the problem of objective function setting based on Pareto multi-optimization theory, and compares the effect on multi-objective inverse planning of those two kinds of objective functions including calculation time, converge speed, etc. The basis of objective function setting on inverse planning is discussed.     

Varian 2300C 直线加速器6 MV X线的蒙特卡罗模拟

摘要: 利用先进的蒙特卡罗治疗头模拟程序BEAMnrc, 依据商家提供的详细设计资料, 集成多项优化模拟参数, 对医用直线加速器射线束传输部分进行了模拟, 获得与测量数据一致的模拟结果。 对复杂多叶光栏模型进行了建模, 模拟了非规则野的剂量分布, 以用于后续研究工作。 Based on the detail head structure designing provided by the manufacture, the ray transmission of VARIAN Clinic 2300C 6 MV X beam was simulated by Monte Carlo code, BEAMnrc. To accelerate the simulation efficiency, multiple optimized parameters were optimized. The simulated and the measured data were well coincident. The dose distribution of a complicated irregular field formed by MLC (Multi Leaf Collimators) was simulated, which are the base for further research work.     

人体信息诊疗仪的研制

以中医理论为基础，结合现代激光技术，计算机技术，利用人体信息来诊断和治疗疾病，该仪器由两部分即半导体激光针灸部分和电脑专家数据库组成，仪器不仅克服了传统针灸方法的弊端，而且包含有可自动诊断的专家数据库。