巧解数学习题     

龚军 《铜仁学院学报》2005,7(5):89-90

在数学解题教学中，究竟应强调技能，还是技巧？我的看法是：教师应在不放松基础知识的前提下引导学生掌握一些技巧性的解题方法，以帮助其快捷、有效地解答问题，克服困难；技巧的掌握、运用亦有助于基础知识的巩固．  相似文献   

报告文学理论研究:走向开放和务实——全国报告文学理论研究会第四届学术研讨会综述     

龚举善  秦韶峰 《广播电视大学学报》2006,(4):123-125

全国报告文学理论研究会第四届学术年会于2006年8月8日~11日在呼和浩特市隆重举行。本次会议由全国报告文学理论研究会主办,内蒙古广播电视大学承办。归纳起来,本次年会的成果集中体现在以下四个方面:一是对于当前报告文学创作现状的分析;二是对于创建报告文学独立的话语方式及理论体系的思考;三是关于报告文学边缘化与中心化问题的论争;四是对于报告文学在构建和谐社会过程中责任承担的期待。  相似文献   

The effect of language specific factors on early written composition: the role of spelling,oral language and text generation skills in a shallow orthography     

Barbara Arfé  Julie E. Dockrell  Bianca De Bernardi 《Reading and writing》2016,29(3):501-527

Spelling skills have been identified as one of the major barriers to written text production in young English writers. By contrast oral language skills and text generation have been found to be less influential in the texts produced by beginning writers. To date, our understanding of the role of spelling skills in transparent orthographies is limited. The current study addressed this gap by examining the contribution of spelling, oral language and text generation skills in written text production in Italian beginner writers. Eighty-three children aged 7–8 years participated in the study. Spelling, lexical retrieval, receptive grammar, and written sentence generation and reformulation skills were assessed and children were asked to write a text on a set topic. A factor analysis revealed that the children’s written text production was captured by three factors: productivity, complexity and accuracy. In contrast to results from children learning to write in opaque orthographies, such as English, this study showed that receptive grammar and written sentence generation skills accounted for significant variance in measures of productivity, complexity and accuracy in Italian children’s written text production. Spelling skills contributed to text accuracy and quality and explained more variance than receptive grammar in microstructural accuracy. By contrast, oral grammatical skills explained more variance in text quality than spelling. The current study shows the differential impact of language systems, such as Italian, on written text production. Implications for assessment and instruction are outlined.  相似文献   

Towards powerful learning environments for the acquisition of problem-solving skills     

Erik De Corte 《European Journal of Psychology of Education - EJPE》1990,5(1):5-19

It is generally agreed that acquiring thinking and problem-solving skills is nowadays a primary objective of general education. Responding appropriately to this challenge requires an answer to the following questions: 1. what does the acquisition of problem-solving skills involve, and 2. how can those abilities be fostered through systematic instruction? This contribution describes a four-step model of skilled problem-solving processes, and gives an overview of three major categories of cognitive skills involved in competent problem solving, namely, the flexible and integrated application of domain-specific knowledge, of heuristic methods, and of metacognitive skills. Furthermore, a framework is presented for the design and elaboration of powerful teaching-learning environments in which such problem-solving skills can be acquired efficiently. Two basic ideas underlying this model are: the view of learning as a constructive process, and the idea of cognitive apprenticeship as an effective and appropriate method for learning and teaching. Finally, some recent research findings supporting the educational significance of the framework are briefly reviewed.  相似文献   

利巴韦林对小鼠生长发育和小肠组织形态结构的影响     

范荣莉  蒋涛  艾凤  方旭  王俊程  龚正清  车传燕 《安徽科技学院学报》2016,30(1):19-24

目的:研究不同剂量的利巴韦林对小鼠生长发育和小肠组织形态结构的影响。方法:30只1月龄小鼠随机分为3组,对照组灌胃生理盐水,低、高剂量利巴韦林组分别按照5mg/kg、10mg/kg体重灌胃药物,连续用药14d,每周清晨称重,采集血液和组织样品。结果:利巴韦林能够提高小鼠日增重,且低剂量用药7d的促生长效果明显(P0.05)。给药14d后,低剂量组脾脏指数比高剂量组显著增加(P0.05)。与对照组相比,高、低剂量利巴韦林组红细胞数下降,白细胞总数增加,中性粒细胞数量极显著降低(P0.01),淋巴细胞数量极显著升高(P0.01),低剂量组白细胞总数极显著增加(P0.01)。高剂量利巴韦林破坏了小肠黏膜上皮形态结构,抑制了小肠绒毛发育;而低剂量利巴韦林能够提高小肠绒毛长度、隐窝深度、十二指肠绒毛长度和隐窝深度比值,增强小肠功能的发挥。结论:利巴韦林具有促进机体生长发育和调节免疫功能的作用,但随着添加剂量的增加,利巴韦林的促生长和免疫增强效果减弱。在临床应用上,应注意根据不同的个体来确定利巴韦林的适宜添加剂量和合理应用时间。  相似文献   

锥拟凸映射     

袁德辉  龚海林  刘晓玲 《韩山师范学院学报》2005,26(6):1-4,53

利用Minkowski泛函，文中定义了一类新的锥拟凸函数（广义锥拟凸，广义严格拟凸和广义强锥拟凸），获得了相应的性质，讨论了这类映射与以往拟凸映射的关系．  相似文献   

加拿大高校学生学习成果评估的内容、方法及启示     

蒋家琼  郑惠文  龚慧云 《大学教育科学》2020,(3):111-116

作为全球第二个实现高等教育普及化的高等教育强国,加拿大高校学生学习成果评估体系富有特色:在评估内容方面,构建起了高等教育系统、院校以及学科(专业)等不同层面的学生学习成果体系;在评估方法方面,形成了由标准化测试、评价量规、表现性评估以及问卷调查等四种类型构成的多元化学生学习成果评估方法体系。其对我国的启示是:构建和完善高校学生学习成果评估的内容体系,为学生学习成果评估奠定共识基础;开发多元化的学生学习成果评估方法与工具,提高评估活动的科学性;加强以结果为导向的评估制度建设,促使学习成果评估常态化。  相似文献   

一类非线性连续奇异系统降维观测器的设计     

陆国平  郭军亮  宫俊 《南通职业大学学报》2007,21(2):66-69,91

讨论了一类非线性时间连续奇异系统观测器的设计问题,通过线性矩阵不等式,给出了一种易于计算的降维观测器的设计方法;仿真数值例子表明了所给设计方法的有效性。  相似文献   

用Excel结合VBA输入传统调查问卷数据   总被引：2，自引：0，他引：2  

巩建闽  孙寿龙  陈德山 《德州学院学报》2005,21(2):67-71,79

传统调查问卷,设计灵活、使用方便,应用广泛,是调查问卷的主要形式.但将其大量原始数据输入到计算机的过程,常是件费时费力的事情.使用Excel结合VBA的方法,实现这一过程,实际应用表明,这是一种简单、易行的方法.  相似文献   

Purdue stepped approach model: Groups as a symbiosis of career development and mental health counseling     

Janice L. De Lucia Ph.D.  David R. Black Ph.D.  Teri A Loughead Ph.D.  John T. Hultsman Re.D. 《Journal of Career Development》1989,16(1):25-41

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