邻羟基苯甲酸的电子性质及分子设计

运用Gaussian 98W量子化学程序，采用STO-3G基组，对邻羟基苯甲酸和邻羟基苯甲酸根进行从头计算研究，探讨其稳定性、分子轨道能量、原子电荷布居、分子轨道分布以及分子构象与能量等规律。     

敦煌寺院会计凭证考释

会计凭证是敦煌寺院会计文书中的一个重要类型,与诸色入破历、入破历算会牒等会计账簿和会计报告构成了一个相对完整的会计文书体系。敦煌寺院的会计凭证种类多样。本文对判、施舍疏、取抄署、契据等几种会计凭证的形制特点及其在会计核算活动中的使用状况进行了具体辨析,指出敦煌寺院十分重视会计凭证的制作、整理、审核与保管。会计凭证发挥了记录收支、控制出纳和为编制账簿、会计报告提供依据的重要作用,是敦煌寺院进行会计核算的基础,体现了敦煌寺院财产管理和会计核算制度的严谨性。     

卷烟厂风力输送系统参数的选择与计算

通过对风送装置与机械输送设备的分析比较,根据为卷烟厂设计风送设备的实际经验,介绍了卷烟厂烟叶、烟梗和烟丝等不同状态的物料之风力输送系统中各项参数的选择与计算的方法步骤,可供设计时参考.     

一种神经网络智能PID控制器

提出一种将线性PID控制与神经元自适应、自学习相结合,基于计算机的新型神经网络智能PID控制(NNPID)方法。采用PID控制器和NN控制器共同调节,并具有自整定、自学习算法。还给出了NNPID控制器的结构、算法及二阶对象下系统的仿真结果。     

解决会计信息失真的根本途径

从会计领域普遍存在的信息失真现象出发,提出实行会计委派制和委托代理会计事务两种途径,结合实际,试图找到正确解决问题的办法。     

How Much Do the Effects of Education and Training Programs Vary Across Sites? Evidence From Past Multisite Randomized Trials

Multisite trials, in which individuals are randomly assigned to alternative treatment arms within sites, offer an excellent opportunity to estimate the cross-site average effect of treatment assignment (intent to treat or ITT) and the amount by which this impact varies across sites. Although both of these statistics are substantively and methodologically important, only the first has been well studied. To help fill this information gap, we estimate the cross-site standard deviation of ITT effects for a broad range of education and workforce development interventions using data from 16 large multisite randomized controlled trials. We use these findings to explore hypotheses about factors that predict the magnitude of cross-site impact variation, and we consider the implications of this variation for the statistical precision of multisite trials.     

Theoretical study of NO adsorbed on the surface of TiO<Subscript>2</Subscript> (110) cluster model

The chemisorption properties of N¹⁸O adsorption on TiO₂(110) surface were investigated by experimental and theoretical methods. The results of temperature programmed desorption (TPD) indicated that the temperatures of the three desorption peaks of the main N₂ molecules were at (low) temperature of 230 K, 450 K and (high) temperature of 980 K. This meant that N¹⁸O decomposed and recombined during the process of N₂ desorption after N¹⁸O was exposed. Analysis of the stable combination and orbital theory calculation of the surface reaction of NO adsorption on the TiO₂(110) cluster model showed that there was clear preference for the Ti-NO orientation.     

互动式多媒体教学在《会计制度设计》课的实践研究

我国《会计制度设计》课现有的教学方式无法适应现代社会会计人才培养的需求,本文提出了基于建构主义理论下构建互动式多媒体教学模式,实践证明,该教学模式能积极调动学生学习的积极性,培养学生学习的主体性、创造力与独立学习的能力,提高教学的效率和质量,取得良好的教学效果。     

积分区域的对称性和被积函数的奇偶性在积分计算中的应用

定积分的计算是高等数学的重要内容之一,但在积分计算时可以结合积分区域的对称性和被积函数的奇偶性来简化计算.     

数学计算中培养学生的核心素养探析

在数学计算中,教师要注重培养学生的核心素养,提高学生的计算能力,为学生以后的数学学习奠定良好的基础。文章从树立学生的主体地位、利用多媒体教学的方式、结合实际生活进行计算、拓展学生创新思维方式四方面,对数学计算中培养学生的核心素养进行探讨。