一类螺旋映射的增长与掩盖定理

In this paper,we deduce growth and covering theorem for f(x)by the other means,where f(x)is strongly spiral-like mapping of typeβwith orderαdefined on Unit Ball B of complex Banach space,and still give growth upper bound and distortion upper bound for subordinate mapping.     

Nb3Sn超导材料的高场钉扎行为

本文利用线性回归分析法处理扩散和气相沉积Nb₃Sn带材样品以及青铜法多芯Nb₃Sn线材样品在高场(²2T)下的临界电流测试数据,得到J_c-B曲线和钉扎力随磁场变化的经验规律。该规律与Kramer模型的钉扎力公式不一致,有待提出新的理论模型加以说明。 关键词：     

可自校正失调电压的BiCMOS锁存比较器设计

在对传统CMOS锁存比较器分析的基础上,设计了一种可自校正失调电压的BiCMOS锁存比较器,它既具有双极型电路快速、输入失调电压低和大电流驱动能力,又具备CMOS电路低功耗和高集成度的特性,因而它们特别适用于高速缓冲数字信息系统和其它便携式数字设备.     

一种新型的镜度测试工具

本文主要介绍JG比较式镜度检具的原理及使用方法,并将其性能与其它眼镜片检查仪器进行比较,同时阐述本检具使用方便、精度可靠等特点。     

二维费密液体理论(Ⅰ)

通过关于二维低密度费密系统准粒子寿命和二维巡游电子系的自旋涨落的计算,本文证明朗道费密液体理论适用于二维相互作用费密粒子系。 关键词：     

RF, DC, and reliability characteristics of ALD HfO/sub 2/-Al/sub 2/O/sub 3/ laminate MIM capacitors for Si RF IC applications

High-performance metal-insulator-metal capacitors using atomic layer-deposited HfO/sub 2/-Al/sub 2/O/sub 3/ laminate are fabricated and characterized for RF and mixed-signal applications. The laminate capacitor can offer high capacitance density (12.8 fF//spl mu/m/sup 2/) up to 20 GHz, low leakage current of 4.9/spl times/10/sup -8/ A/cm/sup 2/ at 2 V and 125/spl deg/C, and small linear voltage coefficient of capacitance of 211 ppm/V at 1 MHz, which can easily satisfy RF capacitor requirements for year 2007 according to the International Technology Roadmap for Semiconductors. In addition, effects of constant voltage stress and temperature on leakage current and voltage linearity are comprehensively investigated, and dependences of quadratic voltage coefficient of capacitance (/spl alpha/) on frequency and thickness are also demonstrated. Meanwhile, the underlying mechanisms are also discussed.     

"数码"语音识别系统中滤波器组的实现方法

介绍了一种采用有源滤波器集成电路LTC1068实现“数码”语音识别系统的模拟滤波器组的方法，重点说明了硬件电路设计时应注意的问题及如何使用开发辅助软件。     

A Wireless LAN Bridging Solution Based on Campus Network

This paper presents a creative wireless LAN (WLAN) bridging solution, concentrating on the overall realization of a well designed interconnection. This solution integrates effective traffic insulation, intended access control, and required address translation without interfering with the vested interest of internet service provider (ISP). The specific solution can be widely applied on the campus-dorm (off campus)-ISP internetworking mode, where it is hard to implement wired link between campus network and dorm network in terms of cost and existing environmental constraints.