一、无监督学习神经元网络 竞争学 Kohonen习和自组织网络。 竞争学习根据输入模式来更新权值,输入单元i与所有输。出单元j用w连接。输入的数目即为输入的维数,输出的数目即为输入数据要聚类的数目

一、能量转换的可逆与不可逆现象 不可逆:焦耳热一电阻媒质导电产生热量Q、散发,与I流向无关,一去不返; 热扩散一一从高温T2→低温T热扩散(传导),单向过程;

Evaporation and sputter deposition [15] 1. a)In the plasma of a sputter deposition system, consider an argon atom that is ionized during a collision in the plasma. i) Express the ratio of the acceleration of the liberated electron to that of the argon ion in terms of M and m, the mass of the ion and electron; give the numerical value of this ratio, and say in which

I. Plot resolution and depth of field as a function of exposure wavelength for a projection aligner with 100nm< A <500nm. Assume NA=0.26. Recalculate on the same plot for NA=0.41. Discuss the implication of these plots for the technologist that must manufacture transistors with 0.5 um

Diffusion: Read Plummer Chap. 7, sections 7.1-7.4,, 7.53, 7.5.8 Show that c(zt) Wroexpfzla)I,with a=2VDf, is a solution to Fick's second law of diffusion. ac(z, t) dc(zt) 2. a) What is the intrinsic carrier concentration in Si at 1100 C? b) Calculate the effective diffusivity (including first-order, charged-vacancy corrections)for As impurities in Si at 1100 C for two cases: 1)CAs=10 cm and ii)

1.绪论 1.1判断下列化合物是否为极性分子? (1)HBr(2)I2 (3)(4)()CH3OH(6)CH3-O-CH3 答:(1),(4),(5),(6)为极性分子;(2),(3)为非极性分子。 1.2写出下列化合物的简单电子结构式

Ellipsis I In compound sentences 电压的单位是伏特,电流的是安培。 Voltage is measured in volts and current in amperes. 地球吸引月球,月球也吸引地球 The earth attracts the moon and the moon the earth

一、例题精解 【例题2.1】在图2.2所示方框图中,N是一线性无源网络。当U1=1V,2=1A时,U3=0V:当U1=10V,2=0A时,U3=1V.试求当U1=0V,I2=10A时,U3=? 【解】应用叠加原理计算,则U3=U3+U3。其中3=AU是U1单独作用时的分量,U3=B2是l2单独作用时的分量,即

一.矩阵的定义:由mxn个数排成的m行n列数表, 称为m行n列矩阵。a表示矩阵A的第i行第列的元 素。矩阵表示如下:

13.1电视图像的数据率 13.1.1itu-rbt.601标准数据率 13.1.2VCD电视图像数据率的估算 13.1.3DVD电视图像数据率的估算 13.2数据压缩算法 13.2.1简介 13.2.2帧内图像I的压缩编码算法 13.2.3预测图像P的压缩编码算法 13.2.4双向预测图像B的压缩编码算法