用GDI+和面向对象设计方法构建交互式图形平台

提出了一个GDI+和设计模式相结合的设计方案.首先介绍一种分层式文档-视图框架.在此框架基础上,分析几种重要交互功能如图元组合、undo/ redo、图面缩放及橡皮筋线的设计过程.使用结果表明,构建的平台满足交互功能需求,并具有良好的可复用性.     

Computer-Aided Diagnosis of Thyroid Malignancy Using an Artificial Immune System Classification Algorithm

The diagnosis of thyroid malignancy by fine needle aspiration (FNA) examination has been proven to show wide variations of sensitivity and specificity. This paper proposes the utilization of a computer-aided diagnosis system based on a supervised classification algorithm from the artificial immune systems to assist the task of thyroid malignancy diagnosis. The core of the proposed algorithm is the so-called BoxCells, which are defined as parallelepipeds in the feature space. Properly defined operators act on the BoxCells in order to convert them into individual, elementary classifiers. The proposed algorithm is applied on FNA data from 2016 subjects with verified diagnosis and has exhibited average specificity higher than 99%, 90% sensitivity, and 98.5% accuracy. Furthermore, 24% of the cases that are characterized as ldquosuspiciousrdquo by FNA and are histologically proven nonmalignancies have been classified correctly.     

灰度分布基于规范式描述的边缘模型基图像编码

提出了一种称为边缘模型基的低比特率图像编码方法,其基本特点是：1）建立一种基于图像边缘信息的活动图像信源模型,按照图像中物体的结构将图像划分为激励区和缓变区（平滑区）。2）用三阶规范式拟合图像激励区的灰度分布,以“激程扫描─规范式拟合”表达图像的缓变区。3）引入了模型匹配与广义运动分析概念,并用干帧间图像预测编码。实验结果表明：在保持重建图像质量的前提下,每像素的比特数可压缩至0.075。     

讲座（三）通用变频器应用技术指南——正确处理变频器与周边设备的关系和变频器安装后的调试

本文面向变频器使用的用户，从事变频器应用和系统设计维护人员，销售人员，维修人员。文中介绍了变频器的原理，森兰变频器的基本系列，附加配套设备的选用，安装技术和禁忌，与周边设备的关系，安装后的调试，操作使用方法，日常维护保养，常见故障检查，判断处理，以及典型应用事例。     

通用变频器应用技术指南——变频器的日常维修与故障处理

本文面向变频器使用的用户、从事变频器心用和系统设计维护人员、销售人员、维修人员。文中介绍了变频器的原理、森兰变频器的基本系列、附加配套设备的选用、安装技术和禁忌、与周边设备的关系、安装后的凋试、操作使用方法、日常维护保养、常见故障检查、判断处理、以及典型应用事例。     

讲座（六） 通用变频器应用技术指南——变频器典型应用列举

本文面向变频器使用的用户、从事变频器应用和系统设计维护人员、销售人员、维修人员。文中介绍了变频器的原理、森兰变频器的基本系列、附加配套设备的选用、安装技术和禁忌、与周边设备的关系、安装后的调试、操作使用方法、日常维护保养、常见故障检查、判断处理、以及典型应用事例。     

通用变频器应用技术指南——变频器的操作

本文面向变频器使用的用户，从事变频器应用和系统设计维护人员，销售人员，维修人员。文中介绍了变频器的原理，森兰变频器的基本系列，附加配套设备的选用，安装技术和禁忌，与周边设备的关系，安装后的调试，操作使用方法，日常维护保养，常见故障检查，判断处理，以及典型应用事例。     

讲座（二）：通用变频器应用技术指南——变频器的配套设备及安装技术

本文面向变频器使用的用户、从事变频器应用和系统设计维护人员、销售人员、维修人员。文中介绍了变频器的原理、森兰变频器的基本系列、附加配套设备的选用、安装技术和禁忌、与周边设备的关系、安装后的调试、操作使用方法、日常维护保养、常见故障检查、判断处理、以及典型应用事例。     

Neurophysiological Model of the Normal and Abnormal Human Pupil

A model of the pathways controlling the size of the human pupil is presented. Computer simulation of this model demonstrates the role played by each of the elements in the pupil pathways. Simulations of the effects of drugs and a few common abnormalities in the system also help to illustrate the workings of the internal processes. Computer models of this type can be used as teaching aids or as tools for testing of hypotheses regarding the system.     

单缆式双向HFC互动电视资讯系统新设计

介绍了一种全新的基于双向HFC网络的互动数字电视资讯方案--ITIS(Interactive TV Information System)系统.它采用基于IHEC的EoC技术,在双向HFC网中使用单根电缆进行互动业务的数据上下行传输,加之IT IS系统使用通用DVB-C数字机顶盒,从而有效地解决了开展互动业务投资成本高,网络建设周期长,入户网络复杂,终端连接繁琐等诸多问题.     

基于软件模型的SDRAM指令FIFO的性能评估

针对SDRAM的读写操作具有一定的流水特性,“Garfield”的EMI(外部存储接口)设计中加入了指令缓冲(先入先出,FIFO),充分利用SDRAM的Burst模式．在处理器进行指令预取时,减少指令读取的平均等待时间。但这种方法的关键问题在于．如何选择恰当的指令缓冲深度．从而最大可能地提高整个芯片的执行效率。本文提出了一种基于软件模型来评估。首先介绍了为什么要在基于ARM7TDMI的外部存储器接口中插入指令FIFO,及如何通过软件建模的方法,用指令集模拟器和存储子系统模型模拟真实硬件环境。然后探讨了采用什么标准去评估指令执行效率的提高,最后通过实验数据得到对SDRAM指令FIFO的性能的评估。     

互动反馈模式在网络英语教学中的应用

互动反馈模式在网络英语教学中的应用形成了网络加互动应用型英语教学模式,这样一种模式的开发与应用表现的是网络英语教学过程当中对师生在学习中的作用的肯定,教师与学生通过网络课堂内的课堂互动、信息交流以及资源共享等来实现语言能力的提高和语言运用能力的保证。本文正是对这样一种网络英语教学模式进行说明和分析,希望对网络英语教学工作者有所启示。     

电力监控和数据采集系统

数据采集，运行人员使用的数据处理以及运行人员对远程设备的控制等功能是所有现代电力工业控制系统的基本构成单元。完成这些功能的系统被称为监控及数据采集系统。文章将提供及数据采集系统的功能以及监控及数据采集系统运行的基本原理。     

Concept and Construction Example of an Interactive Movie System

Interactive movies are proposed as a new type of media produced by combining new trends found in movies, communications, and games. With interactive movies, we are able to build cyberspaces rich to the feeling of presence by applying computer graphics and 3D observation, and to get the feeling of complete immersion in these spaces, as if we were actually in them. In addition, it is possible to experience stories through interaction with other characters in the spaces. We first explain the concept of interactive movies and describe a first prototype system that we have developed. We then describe the construction of a second system, which we are currently developing, as well as several improvements in the system.     

Analysis of a Microwave FET Oscillator Using an Efficient Computer Model for the Device

This paper presents a time domain analysis of a microwave 10-GHz FET oscillator, which employs a practical and efficient computer model for the FET. Good agreement is demonstrated between the predicted and measured performance. A sensitivity analysis of the circuit is performed with respect to some of the FET parameters. This is useful information to estimate variation in production.     

Image Compression Using KLT, Wavelets and an Adaptive Mixture of Principal Components Model

In this paper, we present preliminary results comparing the nature of the errors introduced by the mixture of principal components (MPC) model with a wavelet transform and the Karhunen Loève transform (KLT) for the lossy compression of brain magnetic resonance (MR) images. MPC, wavelets and KLT were applied to image blocks in a block transform coding scheme. The MPC model partitions the space of image blocks into a set of disjoint classes and computes a separate KLT for each class. In our experiments, though both the wavelet transform and KLT obtained a higher peak signal to noise ratio (PSNR) than MPC, according to radiologists, MPC preserved the texture and boundaries of gray and white matter better than the wavelet transform or KLT.     

基于固定指令多数据流模型的Cache设计与实现

为加速循环程序执行,提出了固定指令多数据流计算模型,并设计了一个单芯片阵列处理器体系结构.如果采用传统的数据取,将带来存储网络中大量的数据流动,随之而来的是冲突的频繁出现和不断增长的存储带宽需求.为此采用了数据打包传递技术.实践证明,这种技术可以显著减少网络冲突,降低存储带宽需求.     

Analysis of Thermoelectric Properties of Scaled Silicon Nanowires Using an Atomistic Tight-Binding Model

Low-dimensional materials provide the possibility of improved thermoelectric performance due to the additional length scale degree of freedom for engineering their electronic and thermal properties. As a result of suppressed phonon conduction, large improvements in the thermoelectric figure of merit, ZT, have recently been reported in nanostructures, compared to the raw materials. In addition, low dimensionality can improve a device’s power factor, offering an additional enhancement in ZT. In this work the atomistic sp³d⁵s* spin-orbit-coupled tight-binding model is used to calculate the electronic structure of silicon nanowires (NWs). The Landauer formalism is applied to calculate an upper limit for the electrical conductivity, the Seebeck coefficient, and the power factor. We examine n-type and p-type nanowires with diameters from 3 nm to 12 nm, in [100], [110], and [111] transport orientations, at different doping concentrations. Using experimental values for the lattice thermal conductivity in nanowires, an upper limit for ZT is computed. We find that at room temperature, scaling the diameter below 7 nm can at most double the power factor and enhance ZT. In some cases, however, scaling does not enhance the performance at all. Orientations, geometries, and subband engineering techniques for optimized designs are discussed.     

家庭交互控制网络中手持交互设备的功能设计

以家庭网络为背景,从家庭网络的概念及逻辑结构入手,提出了家庭交互控制网络的概念,分析并比较了家庭交互控制网络中分散交互控制方式和集中交互控制方式两种网络参考模型,并基于集中交互控制网络参考模型提出了一种用于改善人机交互界面、并能隔离不同设备交互逻辑的家用无线手持交互设备的功能设计方案,给出了详细的功能分析、人机接口设计及系统功能结构设计,最后对家用手持交互设备与集成家电控制功能的手机之间的关系进行了简要的分析.     

Design of Submillimeter Schottky Mixers Under Flat-Band Conditions Using an Improved Drift-Diffusion Model

Minimum conversion loss in millimeter and submillimeter-wave Schottky mixers is achieved when the diodes are slightly pushed into the flat-band regime. The discrepancies found between experimental results and physics-based harmonic balance simulations for a 330 GHz antiparallel diode pair subharmonic Schottky mixer showed that traditional drift-diffusion models with conventional boundary conditions at the Schottky contact do not correctly predict the behavior of the Schottky-based mixers working under flat-band conditions. In this work, we employ Monte Carlo simulations to get physical insight of the Schottky diodes working in the flat band regime. New boundary conditions obtained from this analysis have been included in our drift-diffusion simulator which has resulted in an improvement of our circuit simulator to predict mixer operation under flat band regime.