Edison仿真分析在电学实验中的应用

介绍了Edison仿真软件的使用方法和特点，阐明了该软件在中学电学实验中应用的可行性，并结合具体实例得出实际应用中需注意的相关问题。     

Integration of reinforcement effects over time

Two accounts of how density of reinforcement affects steady-state performance on probabilistic schedules were compared: the real-time linear operator (RTLO) model and a temporal control model (in which response strength is determined by reinforcement probability as a function of postreinforcement time). In Experiment 1, the probability of reinforcement repeatedly cycled between extinction and a random-ratio 10 schedule. Response-rate gain and phase did not change with period of the cycle as predicted by the RTLO model, nor did either model predict the differences in response rate following reinforcement at different points in the cycle. In Experiment 2, the probability of reinforcement was elevated immediately following a reinforcement but fell after a few seconds. Previous reinforcements had no effect upon responding. An extension of the temporal control model, the cumulative impulse model, allowed for the summing of response strength over successive reinforcements and was consistent with the data of both experiments.     

Stimulant medication and reading performance: follow-up on sustained dose in ADHD boys with and without conduct disorders.

The study examined the sustained effects of methylphenidate on reading performance in a sample of 42 boys, aged 8 to 11, with attention deficit-hyperactivity disorder (ADHD). Two subgroups were formed based on the presence or absence of co-occurring conduct disorders. Subjects were selected on the basis of their positive response to methylphenidate as determined in a series of original medication trials (Forness, Cantwell, Swanson, Hanna, & Youpa, 1991). For the purpose of this study, subjects were placed on their optimal dose of medication for a 6-week period and then tested on measures of oral reading and reading comprehension equivalent to those used in the original trials, retested after a week without medication (placebo), then tested again the following week after return to medication. Only the subgroup with conduct disorders responded, and this response was limited to reading comprehension improvement in only those subjects who also demonstrated improvement in oral reading on original trials. No response differences were found between subjects with or without learning disabilities.     

纯液体常沸点汽化热的简单计算

在文献[1]的基础上,引入Pitzer三参数对比状态普遍化关系式和Edmister方程式,由最基本的物性数据T_b、T_c和安托固常数计算了25种物质的常沸点汽化热。计算值与实验值间的平均相对误差小于±1％。     

经合组织发展跨境高等教育的策略及我国的对策

跨境高等教育由学生和教师、项目课程、教育机构这三个方面的跨境流动来进行。由于国际学生的流动人数众多,招收外国学生不仅有利于加强国家间文化、政治、贸易、经济关系的长期发展,提升国家的竞争力,更有利于提高国家的财政收入。笔者从经合组织与我国学生跨境高等教育的现状入手,分析了发展跨境高等教育的必要性,并从经合组织及其成员国的宏观政策对发展学生跨境教育的作用进行了分析。通过比较研究,提出了我国在宏观层面上发展学生跨境高等教育可选择的对策。     

三科教材中的历史英雄人物:基于数据的研究

对中华人民共和国成立以来人教版十套教材和课改后多版本教材德育、语文、历史等学科教材中出现的历史英雄人物及其分类、出现频次、学科分布、学段分布、时代分布的大规模量化研究,可以发现革命领袖一直是各个时期教材中出现频率最高的英雄类别,但其他类别的历史英雄人物在不同时期出现频次占比次序各有不同。除岳飞、林则徐、毛泽东、鲁迅、雷锋等少数历史英雄人物各套别和版本分布特征相似度较高外,不同套别和版本教材中各类型历史英雄人物分布特征各异。建议新时期统编三科教材保证重点历史英雄人物及其内容的篇幅,保证各类型历史英雄人物的平衡分布。     

无机化学反应中的耦合现象

若一个化学反应的ΔγGθm >0 ,从热力学角度可以确定该反应在标准状态下不能自发进行 .改变反应条件 ,该反应可以转向自发也可能仍不能自发进行 ,在不改变其它反应条件下 ,利用一个能释放大量自由能的反应与之耦合 ,便可达到转化的目的 ,这就是化学反应中的耦合现象 .耦合现象与反应的能量密切相关     

GIS在交通领域中的应用探讨

介绍GIS的基本概念,对GIS在交通领域应用的优势进行分析,并根据GIS和交通工程近年的发展趋势,介绍GIS在交通规划、道路设计、交通管理、交通设施管理、道路交通安全管理、与ITS联合应用共六个方面的应用研究。     

Counseling Interview Techniques: A Comparison of Theory and Practice

The purpose of this study was to analyze counseling interview techniques learned while in counselor preparation in relationship to those techniques that secondary school counselors considered useful in actual secondary school counseling.