模拟电路与数字电路的区别辨析

随着科学技术的突飞猛进,电子电路的自身功能不断增强,系统规模不断扩大,应用领域不断拓展,与人类生产、生活的密切度不断提升。电子电路按照功能可以分为数字电路和模拟电路两大类,这两种电路有着诸多显著的区别,辨析清楚两者的区别对电子电路的改进、设计和研发有着十分重要的意义。

侦查学中几个易混淆名词概念辨析

作为一门实践性极强的应用学科,侦查学学科体系和科目内容日臻完善,对侦查实践起到了一定的指导作用。然而发展中的侦查学也处于部分理论滞后于侦查实践的状态,甚至一些名词概念也存在似是而非的现象。罗列多组侦查学中最常见又极容易混淆的名词,从概念内涵与特征、适用范围与对象等作以对照比较、区别辨析,以减少在认识理解上的混乱和错误。

Bayes discriminant analysis method to identify risky of complicated goaf in mines and its application

A Bayes discriminant analysis method to identify the risky of complicated goaf in mines was presented. Nine factors influencing the stability of goaf risky, including uniaxial compressive strength of rock, elastic modulus of rock, rock quality designation （RQD）, area ratio of pillar, ratio of width to height of pillar, depth of ore body, volume of goaf, dip of ore body and area of goal, were selected as discriminant indexes in the stability analysis of goal. The actual data of 40 goals were used as training samples to establish a discriminant analysis model to identify the stability of goaf. The results show that this discriminant analysis model has high precision and misdiscriminant ratio is 0.025 in re-substitution process. The instability identification of a metal mine was distinguished by using this model and the identification result is identical with that of practical situation.

启发式教学十谈

界定了启发式教学的定义 ,介绍了启发式教学的发展沿革 ,概括了启发式教学的特点、要求、意义和价值 ,辨析了启发式与问答法、讲授法的差异 ,阐明了学习动机培养和学习方法指导在启发式教学中的重要性 ,分析了启发式教学与注入式教学的辩证关系 ,指出了启发式教学并不象通常所说那样是一种具体的教学方法 ,而是一种教学思想 ,提出了实践中运用启发式教学的方法和途径。

六年制小学语文第十册期末复习建设

六年制小学语文第十册期末复习建设徐州市鼓楼区教研室孙可泰，于永正一、基础知识基础知识的复习要在明确本年级教学目标的基础上突出重点，即以本册出现的知识点及要学生达到的能力为主，结合本班的实际情况，将所学知识进行系统的分析、整理、归纳，在理解和运用上着力...