三弧段型面联接的数控加工

论述了三弧段型面曲线的形成及其曲线参数方程,编制了三弧段型面的数控加工宏程序,适用于各种不同参数的三弧段型面的加工,且能够满足加工精度的要求。     

In-situ composition and luminescence of rare earth coordination polymers/silica/PEG hybrid materials

A two-step sol-gel method was developed with hydrochloride as an acid catalyst for the hydrolysis process and hexamethylenetetramine as base catalyst for the synthesis of terbium and europium coordination polymers with picotinic acid. Luminescent europium and terbium coordination polymers with picotinic acid were incorporated in silica gel/polymer hybrid matrix. In the range of concentration of luminescent species (0.1, 0.3, 0.5, 1.0, and 2.0 wt %), emission intensity increases with the increase of composition concentration, and no concentration quenching takes place. The text was submitted by the authors in English.     

100吨电炉自动控制系统设计及改进

本文介绍了安钢100吨电炉两级自动控制系统的设计方案，详细阐述了一级、二级自动控制系统的配置和功能，对于系统运行中出现的问题，提出了改进方案。     

Approaches to large-scale urban modeling

Large-scale urban modeling technologies use a variety of sensors and data acquisition techniques. The authors categorize current approaches and describe their advantages and disadvantages. Their survey examines current research with respect to several performance criteria including data acquisition sources, user interaction level, geometric fidelity, model completeness, and intended applications. Although modeling systems vary with respect to these criteria, data acquisition strongly influences model characteristics and usefulness. We therefore cluster the methods into those based on photogrammetry, active sensors, and hybrid sensor systems.     

Odyssey: a high‐performance clustered video server

Video servers are essential in video‐on‐demand and other multimedia applications. In this paper, we present our high‐performance clustered CBR video server, Odyssey. Odyssey is a server connecting PCs with switched Ethernet. It provides efficient support for normal play and interactive browsing functions such as fast‐forward and fast‐backward. We designed a set of algorithms for scheduling, synchronization and admission control, which results in a high utilization of resources. Odyssey is able to deliver a large number of video streams. Copyright © 2003 John Wiley & Sons, Ltd.     

猜想发现中的模糊类比研究

This paper combines Guess-Discovery with Fuzzy-Maths on the base of the Guess-Discovery model, and introduces a model of Combined-Reasoning ,and shows the feasibility of the model with experiments. It breaks through the restriction of precious maths and classic thinking ,and it is important/or our research,manufacture,and life.     

基于USB接口技术的多道核谱分析仪的设计

介绍了一种较新的采用USB接口技术的多道核谱获取系统，阐述了P89C51RD2单片机与A／D转换器和USB控制器之间接口应用的软件与硬件技术要点。     

反应堆堆芯热功率测量方法及其误差分析

通过建立精确的数学模型 ,提出了一种测量核电站压水反应堆堆芯热功率的方法 ,并对该方法进行了误差分析。基于上述方法的KME系统与校验SAPEC系统的比较结果表明 ,该方法完全可以用于核电站堆芯热功率的测量     

MAX197A/D转换器多通道特性在激光电源监控系统中应用

利用了MAXl97的多通道采样特性，实现了高功率激光加工机电源部分的可靠采样，保证采样速度，克服单通道带来干扰，使电源的监控系统可靠工作。     

Computers in police cruisers

A typical police cruiser is filled with electronic devices, displays, and inputs, all competing for the officer's attention. The Project54 system integrates those devices, and its speech-based user interface lets officers operate them without taking their eyes off the road.