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郑小琴 《数学学习与研究(教研版)》2009,(1):6-6
数学中表示判断的句子称为数学命题．它必须对事物的情况作出肯定或否定的回答,不能既肯定又否定．命题有真命题和假命题之分．正确的命题是真命题．不正确的命题就是假命题．要说明一个命题是真命题．必须经过严格的推理论证,而要说明一个命题是假命题,只要举出一个符合命题条件,但不满足命题结论的例子就可以了．即举一个反例就可以断定一个命题是假命题． 相似文献
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命题学习在于掌握命题的心理意义.数学命题主要有定义型命题、公理、定理型命题、证明题等4种类型.数学命题的特点主要表现为抽象性、符号性和逻辑性.认知建构理论认为数学命题学习是命题接受、命题理解和命题应用的过程.命题接受的条件是学习者具有积极的心向、适当的认知结构、两种语言转换能力;命题理解是赋予命题心理意义和建立命题网络的内在建构;命题应用的途径是问题解决,包括命题激活与提取、精致的过程. 相似文献
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高等教育自学考试命题质量控制包括命题队伍质量控制、命题技术标准控制、命题评估质量控制和命题保密质量控制等。命题技术标准确定以后,命题人员就是决定的因素;“内行”的命题管理者遵循国家制定的命题文件,指导命题教师科学规范命题;“称职”的命题教师“遵纲循本”精心设计试题;评估测量专家对命题进行客观公正测量评估;围绕试卷为中心所涉及的各个环节要严格执行保密规定。 相似文献
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高考虽然得到了不断完善和长足进步,但仍存在一些问题,尤其在命题方面。因此,高考改革应重视命题改革。命题改革应注重以科学理论为指导;命题范围灵活化、命题立意能力化、命题机构多样化、命题机制完善化等有利于高考命题的不断优化。 相似文献
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杨宪立 《濮阳职业技术学院学报》2006,19(2):127-129
考试就要有命题,编拟命题的一个重要途径就是将已有命题认真剖析,然后改编为新的命题。常见的编拟命题的方法主要有:利用命题结论的多样性、利用逆命题、利用几何变换、利用特殊情形,推广或把原命题改编为开放型命题。 相似文献
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一、判断一个命题是简单命题还是复合命题的方法我们知道含有逻辑联接词“或”“且”“非”的命题是复合命题,不含有逻辑联接词的命题是简单命题,但在实际问题中有些命题不含“或”“且”“非”却是复合命题,有些命题含有“或”“且”“非”却是简单命题,这就使得学生在判断简单还是复合命题时常常出错,下面通过实例来进行错对的辨析。 相似文献
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《教育研究与评论(中学教育教学版)》2017,(3)
理解数学命题是教好、学好数学知识的必要基础。数学教师理解命题的视角主要包括命题的产生背景、命题的发现方法,命题的条件和结论、命题的证明、五个基本的逻辑联结词、四种命题之间的关系、命题的应用价值、命题蕴含的数学思想方法、命题的推广等。理解命题的策略主要有问题策略、发现策略、探究策略、反例策略、"回头证"策略、推广策略等。 相似文献
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迟欣 《天津工程师范学院学报》2014,24(3):57-61
我国现行的学科与专业目录包括1997年版《授予博士、硕士学位和培养研究生的学科、专业目录》、2012年版《高等学校本科专业目录》以及2011年版《学位授予和人才培养学科目录》.美国的学科与专业目录被称为Classification of Instructional Programs（CIP）.美国的学科、专业分类系统无论在编制理念上还是技术上都比较完善和成熟,它给我国行业特色院校英语学科与专业互动机制的建立带来了一定的启示.美国加州大学洛杉矶分校（UCLA）的语言学科的院系设置和课程设置,也为我国行业院校英语学科的建设提供了宝贵经验. 相似文献
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钦州湾表层海水温度盐度及pH值时空变化 总被引：2，自引：0，他引：2
根据2009年春夏秋冬4个季节调查资料,分析钦州湾表层海水温度、盐度及pH值的季节变化和分布特征。结果表明：钦州湾海水平均温度春季20．4℃,夏季30．1℃,秋季16．0℃,冬季14．6℃,变化特征与气温的季节变化相同,空间分布为夏秋季河口区的水温都略高于湾口区,而春冬季则相反。海水平均盐度春季20．067,夏季17．975,秋季23．864,冬季23．660,表现为秋季〉冬季〉春季〉夏季,各季节空间分布总体表现为河口区低,湾口区高的趋势。海水pH平均值春季7．82,夏季8．11,秋季8．01,冬季8．10,全年空间分布高值区均出现在大风江口外海域。钦州湾海水比较适宜大蚝、对虾、文蛤等广温广盐性品种的海水养殖。 相似文献
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文章从对我国高校学生管理工作的产生与发展的梳理中归纳出我国学生管理工作的基本任务,对当前学生管理工作的现状进行深入分析,查摆存在的问题和形成原因,并提出解决问题的办法和途径,以解决学生管理工作在高等教育大众化背景下日益减弱的思想政治教育功能及教学辅助功能,探索学生管理工作在单纯的秩序维持之外对于学生思想政治教育、课内外学习及就业等多方面的指导和教育功能. 相似文献
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20世纪90年代我国区域高等教育公平与效率变化的实证研究 总被引：5，自引：0，他引：5
公平和效率是各国高等教育发展中存在的重要问题之一。一般认为公平和效率在理论上和宏观上是可以统一的，并能够得到协调发展和可持续发展。然而，从微观和实践层面上分析却往往会发现存在一种矛盾现象，似乎是一个不可调和的两难问题。我国省(市)高等教育发展的公平与效率就是当前急需关注的一个典型的、具体的问题。通过对反映我国1999年和2000年各省(市)高等教育和经济发展状况的多指标进行聚类、相关等统计分析，考察了我国20世纪90年代高等教育区域公平和效率的发展变化特征，并通过对二者量化关系的揭示，对我国省(市)20世纪90年代高等教育公平与效率问题进行了实证分析和评估，并对我国未来省(市)高等教育的进一步发展提出了相应的对策和建议。 相似文献
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Utilizing 2068 individuals in 60 organizations in the U.S. and Italy, this study (a) examines the overall relationship between trust in top management and immediate supervisor and overall estimates of satisfaction and perceived organizational effectiveness, (b) compares the amount of variance in satisfaction and effectiveness that can be explained by trust in top management to the amount of variance explained by trust in immediate supervisor, and (c) clarifies the role of information receiving as a predictor of trust in top management and immediate supervisor. Results of a canonical correlation analysis indicated that the canonical equation explained 49% of the variance in the linear composites (Canonical R = .69, p < .001). Trust in top management was more strongly associated with satisfaction and effectiveness than was trust in immediate supervisor. Tzvo separate multiple regression analyses indicated that after controlling for geographic location of company and type of industry, information received about job and organizational issues uniquely explained 26% of the variance in trust in top management and 13% of the variance in trust in immediate supervisor. 相似文献
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Marguerita McGovern 《Pastoral Care in Education》2013,31(3):235-252
The aim and objective of this study is to examine and compare how schools in Galway, Republic of Ireland and Derry in the North of Ireland (cities located within two independent jurisdictions in Ireland) manage and respond to bereavement. To carry out a survey of schools, the ‘Loss in Schools’ questionnaire is considered the most suitable tool. The questionnaire, which contains 10 questions designed to unearth pertinent issues including the needs and concerns of schools, had previously been administered in studies in Hull. Sixty questionnaires were administered in both Galway and Derry, with a return of 38 and 35, respectively. This study illuminates important aspects of the topic. The schools in both Galway and Derry rate bereavement (and parental separation) as highly important in terms of priorities. In terms of policy, some of the respondents in both study sites report that loss is included in their school's policy documents but not formally included in the curriculum. A designated staff member (who would speak to the pupil experiencing the death of a family member or significant other) is evident in 37% of Derry schools and 23% of Galway schools. Some members of staff in both study sites have attended training in bereavement, although the courses are relatively short term. Schools request assistance from other agencies outside the formal schools arena in times of need. In Galway the psychology services are most commonly consulted, while in Derry the Western Education and Library Board Bereavement Counselling teams and Cruse Bereavement Care are identified as additional resources from which help is sought. This paper outlines recommendations on schools' training needs in the area of child bereavement and the request for support to help further develop and formalise school policies. 相似文献
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本文建立在对中印两国贫困地区义务教育现状比较的基础上,分析了"导生制"存在的条件和特点,指出在当今中印两国贫困地区普及义务教育的现状下,"导生制"仍有其存在的条件和意义,并具体阐述构想了"导生制"的实施形式及其在两国贫困地区普及义务教育中的作用. 相似文献
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信息技术与学科教学整合是当前教育界探讨的热点问题,也是国家积极提倡的一种教学方式。高校进行信息技术与学科教学整合也是新形势教育改革的迫切需要。为了解我省高校信息技术与学科教学整合的现状,促进信息技术在教学中的应用,笔者于2005年6月对江西省高校信息技术与学科教学整合现状进行了调查。 相似文献
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《Compare》2012,42(2):283-302
This article examines the role networking has played, at local and national levels, in facilitating communication between key actors involved in challenging the marginalisation of disabled people from education and from wider Bangladeshi society. Efforts to promote awareness of the importance of including disabled children in their local schools have gained ground at national level through a complex web of networking relationships, including government departments concerned with education and social welfare, disability-focused NGOs and mainstream development agencies and networks. The article explores the experience of blind people, (in their role as members of self-help groups linked to Community-Based Rehabilitation programmes in rural areas) in supporting disabled children to access their local school, and in ensuring their safety. Some evidence is provided for the role of networking in challenging marginalising policies, in accessing services (including financial benefits), and in resisting marginalisation. In considering this evidence, the authors debate the different forms and meanings of networking in societies which prioritise collectivity and interdependence, rather than individualism. 相似文献
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研究了用电子自旋顺磁共振(ESR)法对香烟烟气中的自由基进行分析的样品处理方法及ESR检测方法.对四种英国产香烟样品中的粒相及气相自由基进行了分析检测并对检测结果进行了讨论.结论:大多数英国产的检测样品香烟中,含有1.5～3倍于国产对照香烟样品的气相自由基;而国产对照样品香烟的粒相自由基的含量水平则处于较高水平.实验结果还显示:同品牌的Sobranie香烟中,不同型号样品中粒相自由基含量与焦油含量具有负相关性,但不同品牌则不同;对于检测样品而言,气相自由基的含量与焦油含量有正相关性. 相似文献