Identifying meta‐clusters of students' interest in science and their change with age     

Ayelet Baram‐Tsabari  Anat Yarden 《科学教学研究杂志》2009,46(9):999-1022

Nearly 6,000 science questions collected from five different web‐based, TV‐based and school‐based sources were rigorously analyzed in order to identify profiles of K‐12 students' interest in science, and how these profiles change with age. The questions were analyzed according to their topic, thinking level, motivation for and level of autonomy in raising the question, the object of interest and its magnitude, and psychological distance of the object in question from the asker. Characteristics of the asker, such as gender, grade level, and country of origin were also considered, alongside characteristics of the data source, such as language, setting (Internet, school, TV), and the potential science‐attentiveness of the users. Six meta‐clusters of children's and adolescents' interest in science were identified using cluster analysis of their self‐generated science questions. A developmental shift in interest from non‐classical to classical school science subjects was noted. Other age‐related developments, such as an increase in thinking level as reflected by the questions, a decrease in organization level and the psychological distance of the object in question with age were also explored. Advantages and shortcomings of web‐based data collection for educational research are discussed, as are the implications of the results obtained using this methodology for formal science education. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 46: 999–1022, 2009  相似文献   

Variables that influence the environmental behavior of adults     

Anat Levy  Yossi Leshem 《Environmental Education Research》2018,24(3):307-325

This study focuses on understanding the factors that encourage adults’ environmental behavior. This mixed approach methodology study used 10 Likert type questionnaires to collect data about nine cognitive and affective components that might influence environmental behavior. The qualitative data was collected through open questions and interviews. The main sample included 656 participants from amongst Israel’s working population. The questionnaires were found both reliable and valid. Most of the explored cognitive and affective aspects appeared to act as predictors of environmental behavior. The study indicates that environmental behavior is driven by ‘egoistic’ concerns rather than by altruistic views and motivations.  相似文献   

加强科技期刊编辑英语应用能力的培养   总被引：15，自引：5，他引：10  

王征爱 《编辑学报》2002,14(2):139-141

根据我国科技期刊和期刊编辑的现状及国际间科技交流对期刊编辑的要求,指出科技期刊编辑肩负的历史责任和接受英语应用能力继续教育的重要性和必要性,并结合自身工作经验,提出了几种继续教育的有效途径.  相似文献   

黄芪治疗微循环障碍的临床观察     

刘学英  肖国民  袁桂丽  宋丽琴  赵瑞春  李曙光 《河北北方学院学报(医学版)》2001,18(2):35-36

目的观察黄芪对微循环障碍的影响.方法微循环障碍病人70例,男性47例,女性23例;年龄40～70岁.随机分为两组,治疗组35例,用黄芪注射液30ml+5%葡萄糖200ml,静脉内点滴,一日一次;对照组35例,用川穹嗪200 mg+5%葡萄糖200ml,静脉内点滴,一日一次;2周为一疗程.治疗前后分别查微循环.结果两组治疗后微循环均较治疗前明显改善.结论黄芪能改善微循环的血液流态,减少渗出、出血.黄芪可用于血管病的治疗.  相似文献   

心律平和稳心颗粒联合治疗室性早搏35例疗效观察     

王亚玲  徐涛  李方江 《河北北方学院学报(医学版)》2004,21(1):30-31

目的 :探讨心律平和稳心颗粒联合治疗复杂性室性早搏的效果。方法 :对照组采用心律平 15 0mg ,每日 3次 ;观察组采用心律平 15 0mg ,每日 3次 ,稳心颗粒 1袋 ,一日 3次 ,两组均是 14d为一个疗程。结果 :观察组有效率为 91.4 3% ,1例出现Ⅱ°～Ⅰ型房室传导阻滞 ,对照组有效率为 6 5 .71% ,3例出现Ⅱ°或Ⅲ°房室传导阻滞。结论 :心律平和稳心颗粒联合应用治疗室性早搏明显优于单一应用心律平。  相似文献   

脑梗死所致脑疝的外科治疗     

刘熙鹏  孙志强 《河北北方学院学报(医学版)》2004,21(1):24-25

目的:探讨大面积脑梗死所致脑疝的手术指征及手术方法.方法:对大面积脑梗死所致早期天幕疝16例采用额、颞、顶去骨瓣减压术,同时剪开硬脑膜.结果:16例全部存活,随访3～6个月,患肢肌力Ⅱ～Ⅲ级5例,Ⅳ～Ⅴ级10例,不全运动性失语1例,无1例发生癫痫.结论:大面积脑梗死经积极内科治疗后发生早期天幕疝者应积极手术治疗.去骨瓣减压术是救治本病的有效方法.  相似文献   

强的松对肾病综合征患儿血清钙及骨源性碱性磷酸酶的影响     

石蔚  梁桂珍 《河北北方学院学报(医学版)》2004,21(1):35-36

目的:探讨糖皮质激素对肾病综合征患儿血清钙、骨源性碱性磷酸酶的影响,了解患儿成骨细胞功能变化.方法:以血清钙、骨源性碱性磷酸酶为参数,对肾病综合征患儿治疗前及治疗后4周血清钙及骨源性碱性磷酸酶进行动态观察.结果:强的松治疗后血清钙及骨源性碱性磷酸酶与治疗前相比有显著差异,治疗后低于治疗前水平[血清钙(P＜0.01)、骨源性碱性磷酸酶(P＜0.01)].结论:皮质激素治疗可显著抑制肾病综合征患儿的成骨细胞功能,导致血清钙及碱性磷酸酶水平的降低.  相似文献   

心率及心电图在冠状动脉造影术时的变化     

李方江  赵九安  田建辉  王亚玲  徐涛  梁海峰  王建琴  李跃  李清  张强 《河北北方学院学报(医学版)》2004,21(1):13-14

目的:探讨选择性冠状动脉术时心率和心电图的变化.方法:经常规两种人路途径行冠状动脉造影术,全过程中12导联心电图监测记录,记录选择性冠状动脉术时注射造影剂前后心率、R波、ST段及T波的变化.结果:注射造影剂后均出现心率减慢,R波幅降低(或S波加深),ST段降低或压低,T波幅度下降或倒置加深.结论:冠状动脉有严重病变者,造影剂的量要少于常规量,并且要准备好抢救药品和器械.  相似文献   

How does information technology shape thinking?     

Sarit  Anat   《Thinking Skills and Creativity》2006,1(2):130-145

  相似文献   

上消化道出血49例胃超声影象分析     

高会斌  沈金库  王海燕  刘瑞华 《河北北方学院学报(医学版)》2001,18(2):18-19

目的分析上消化道出血胃B超图象特征,探讨B超对上消化道出血及其病因诊断的意义.方法;选择上消化道出血活动期的位院患者49例,分别于空腹及饮水后依次探查贲门、胃体、胃窦、十二指肠及其邻近器官,记录图像,并结合内镜病理及X线结果进行分析.结果49例中.B超检出相关疾病41例,命中37例;检出率及准确率分别为83.7%和75.5%,X线报告32例,命中29例,检出率及准确率分别为65.3%和59.2%,统计分析结果显示该两种检查方法有显著差异(P＜0.05).结论B型超声可作为上消化道出血病因诊断较可靠的方法.  相似文献