解几类直线与圆锥曲线问题的通法探究

直线与圆锥曲线问题是解析几何中的典型问题.解决此类问题的关键是弄清直线与圆锥曲线的本质.通过对几类直线与圆锥曲线问题的分析,探究其通法,以提高学生的解题能力.     

高考立体几何中的“折”与“展”

折叠问题是立体几何的一类典型问题,是实践能力与创新能力考查的好素材.它们转变正是空间几何与平面几何问题转化的集中体现.处理这类题型的关键是抓住两图的特征关系,是利用翻折前后的不变量.而表面展开问题是折叠问题的逆向思维、逆过程.不过现在利用向量知识求解折叠问题,为我们提供解立体几何题的一种新途径.     

以问题化研究促进教学改革

问题化教学是一种有效的教学改革方法.本文对问题化教学法的运用进行了详细介绍.阐述了问题化教学法的特点.论述了问题化教学法在课上和课外的运用.问题化教学法的中心是问题的设计,本文从问题特征与设计方法两个方面对此进行了阐释.最后,论述了问题化教学法的不足与改进措施.     

以问题化研究促进教学改革

问题化教学是一种有效的教学改革方法.本文对问题化教学法的运用进行了详细介绍.阐述了问题化教学法的特点.论述了问题化教学法在课上和课外的运用.问题化教学法的中心是问题的设计,本文从问题特征与设计方法两个方面对此进行了阐释.最后,论述了问题化教学法的不足与改进措施.     

用平面法向量证明平行或垂直

证明直线与直线、直线与平面、平面与平面之间的平行与垂直问题,是立体几何中最常见也是最重要的问题.这类问题的求解,通常运用"降维"的思想,即将面面问题"降维"为线面问题,将线面问题"降维"为线线问题来处理,这是一种"化归"的思想.但如果借助平面法向量这个工具,也可以很简捷地解决问题.本文结合具体案例介绍用平面法向量来证明平行与垂直的问题.     

例谈点坐标的作用

正点与坐标的结合是数学中形与数结合的核心,也是形与数转化的桥梁.点坐标的作用主要是,解决函数与图形的结合,或函数与实际问题结合的综合问题.这类问题常见的有以下几种情形.一、利用点坐标求函数解析式利用点坐标求函数解析式是最常见、也是最基本的方法之一.     

硕士学位论文常见问题探析

硕士研究生在学位论文写作中遇到的困难有一定的共性,较为普遍的问题是:开题报告中的形式主义.研究方法的合理性与结果可靠性问题,论文语言表达问题.造成这些问题的直接原因是研究生理论的准备较差和基本研究经验缺乏.与之相适宜的教学方式为:开放型的问题式教学法,讲述与半结构式讨论相结合,循序渐进培养基本功,导师的严格要求与支持.     

排列组合应用题的常见解法

排列组合应用题是高中数学教学的难点,也是高考必考的内容.它往往与概率问题相联系.解决排列组合问题,关键是熟悉问题的类型及相应解法.     

社会问题与教育约制

任何社会都不可避免地存在各种各样的社会问题与教育问题,以及与教育密切相关的教育社会问题.引起社会问题的原因是多方面的,解决社会问题的途径也是多渠道的.社会问题与教育有着极为密切的关系.     

关于逻辑哲学若干问题的探讨

本文首先区别了关于逻辑的哲学与逻辑化的哲学,区别了关于哲学的逻辑与哲学化的逻辑.然后提出:1.逻辑哲学是关于逻辑的哲学.哲学逻辑是哲学化的逻辑,而逻辑化的哲学和关于哲学的逻辑是没有理论意义的;2.“逻辑究竟是什么”的问题不是逻辑哲学问题,而是逻辑问题;3.逻辑本体论问题是逻辑哲学的核心问题。     

A multidimensional study of special education students' attitudes towards people with disabilities: a focus on deafness

This study explores the attitudes of future professionals working with students with disabilities towards four exceptionality groups: persons with deafness, with paralysis, with mental retardation (MR) and with delinquent behaviour, and specifically examines how deafness is perceived in comparison with the three other groups. Undergraduate students' (N=177) attitudes towards the four groups were tapped using a semantic differential scale referring to the cognitive, emotional and behavioural components of attitudes. Participants' degree of contact with people with disabilities was also reported. Results indicated that attitudes towards people with deafness were more positive than those towards the other three groups. Attitudes towards persons with paralysis were more positive than towards persons with MR and with delinquent behaviour, except when personality was considered. Emotional reactions and behavioural tendencies towards persons with delinquent behaviour were the most negative. Contact with people with disabilities had significant but low correlations with some aspects of the attitudes towards people with MR and paralysis. In general, the results of this study suggested that deafness was perceived as a physical disability and not as a social phenomenon. They also demonstrated that attitudes towards people with disabilities are a function of the particular disability condition and are multidimensional.     

Exploring the Relations between In-service Training,Prior Contacts and Teachers’ Attitudes towards Persons with Intellectual Disability

This study investigates the relations between teachers’ attitudes towards persons with intellectual disability (ID), in-service training on ID, and prior contacts with persons with ID. A sample of Canadian elementary school teachers (N?=?118) completed the Attitudes Toward Intellectual Disability Questionnaire, which measures cognitive, affective and behavioural components of attitudes towards persons with ID. Correlational and multivariate regression analyses were performed. Frequent contacts with persons with ID and experience of including a child with ID increased the likelihood of reporting prior positive contacts with persons with ID. In turn, this was associated with less discomfort towards persons with ID and more willingness towards interactions. In-service training on ID was related to better knowledge of rights and capabilities of persons with ID. Experience of including a child with ID in general education classrooms increased the likelihood to report feeling competent in teaching children with ID, which predicted more willingness to include children with ID.     

Late phonological development in Spanish children with bilateral hearing loss / Desarrollo fonológico tardío en niños españoles con pérdidas auditivas bilaterales

Abstract

This study has a twofold objective: to analyse and compare the phonological processes in a sample of Spanish children with hearing loss, both with a cochlear implant and with a hearing aid, with a group with normal hearing; and to determine whether there are differences between the participants with a cochlear implant and with a hearing aid in the frequency and nature of the phonological processes. The sample is made up of 168 participants, eight with hearing loss (four with an implant and four with a hearing aid) and 160 with normal hearing. Samples of spontaneous speech were collected and transcribed using the tools from the CHILDES project. For the analysis, the phonological processes paradigm was adopted, evaluating phonological development based on normative error rates. The participants with a hearing loss show slower phonological development in terms of phonological processes, along with atypical processes. Furthermore, the participants with cochlear implants committed more phonological errors than those that wear a hearing aid. The implications of the results are discussed, and it is recommended that auditory stimulation should be done early in children with hearing loss regardless of their technical aid.     

论毛泽东思想与马克思主义与时俱进的内在联系

与时俱进是马克思主义的理论品质,也是毛泽东对待马克思主义的科学态度。毛泽东能够坚持以与时俱进的精神对待马克思主义;以与时俱进的精神发展马克思主义;以与时俱进的精神审视自己的学说。     

兵无成势与经营之道

商场与战争有其相通的共同特点,以《孙子兵法》的智慧,精神指导商业实践,有如下要点:一、知彼知己,以“知”制胜;二、推陈出新,以“新”制胜;三、谋在人先,以“谋”制胜;四、合纵连横,以“交”制胜;五、奇正相生,以“奇”制胜;六、兵贵神速,以“快”制胜;七、以战养战,以“借”制胜;八、灵活多变,以“变”制胜;九、智勇双全,以“勇”制胜。     

深入把握中国特色社会主义的科学内涵

党的十八大报告深刻而全面地阐释了中国特色社会主义的科学内涵,标志着我们党对中国特色社会主义的认识更加深刻、更加准确。中国特色社会主义道路、理论体系、制度统一于中国特色社会主义伟大实践中,也就形成了中国特色社会主义旗帜。深刻理解和准确把握旗帜、道路、理论体系、制度之间的关系,高举中国特色社会主义伟大旗帜,坚定中国特色社会主义的道路自信、理论自信、制度自信,是提升中国特色社会主义的境界,夺取中国特色社会主义新胜利、推进中国特色社会主义事业向前发展的重要保障。     

自我效能、兴趣水平与学习策略等八因素的相关性——以英语高职生为研究样本

本研究主要运用相关分析法及个人访谈法对来源于高职院校三大类学生的归因倾向、学校环境、兴趣水平、焦虑水平、学习策略水平、动机水平、动机行为、自我效能感水平分别与他们的自我效能感水平、兴趣水平作了相关分析。结果发现:三类不同学生归因倾向、学校环境、兴趣水平、焦虑水平、学习策略水平、动机水平、动机行为、自我效能感之间两两相关。对厌学者而言,自我效能与学习策略、动机行为达到非常显著的相关,与兴趣水平达到显著的相关,与学校环境存在不显著的负相关。兴趣水平与焦虑水平、自我效能达到非常显著的相关,与学校环境达到显著相关,与归因存在负相关。对次厌学者而言,自我效能与学习策略达到非常显著的相关,与动机行为达到显著相关,与学校环境、归因倾向呈现低等程度的负相关。乐学类学生的自我效能与动机行为产生了显著的正相关,与学校环境、归因方式产生低度负相关;他们的兴趣水平与动机水平、焦虑水平、自我效能、动机行为产生了中低度相关,与归因、学校环境、学习策略产生了中低程度的负相关。     

Friendship stability among students with and without special educational needs

Previous research has shown that students with special educational needs (SEN) have fewer friendships than their peers without SEN. In this longitudinal study, 545 students from primary and secondary schools, including 106 students with SEN, were surveyed at the beginning and the end of the school year. The results show that students with SEN generally have fewer reciprocal friendships and, proportionally, more often nominate students with SEN than students without SEN. The stability of friendships is lower for students with SEN than for students without SEN. Additionally, for students with SEN, same-SEN-status friendships were as stable as cross-SEN-status friendships, whereas for students without SEN friendships with peers without SEN were more stable than those with peers with SEN.     

配合物的氧化还原稳定性研究

金属离子在水溶液中形成配合物的氧化还原稳定性与配合物的组成、结构等有关；配合物的稳定常数可以衡量配合物氧化还原稳定性的大小；金属离子配合物的稳定性在理论和实践中都具有重要意义。     

财务分析报告容易出现的五个问题

财务会计人员在撰写财务分析报告时容易出现五大问题:一是与企业管理脱节,二是与实际业务脱节,三是与企业整体脱节,四是与动态发展脱节,五是与营销策略脱节。