The mathematics teacher identity of two early career mathematics teachers and the influence of their working communities on its development     

Arslan  Okan  Haser  Çiğdem  Van Zoest  Laura R. 《Journal of Mathematics Teacher Education》2022,25(4):429-452

Journal of Mathematics Teacher Education - To better understand the critical early years of teaching and teacher identity development, this study explored the mathematics teacher identity of two...  相似文献   

Algorithmic thinking development through physical computing activities with Arduino in STEM education     

Sarı  Uğur  Pektaş  Hüseyin Miraç  Şen  Ömer Faruk  Çelik  Harun 《Education and Information Technologies》2022,27(5):6669-6689

Education and Information Technologies - The need to benefit from information technologies in the twenty-first century digital age is increasing in all economies to overcome problems and...  相似文献   

试论冯友兰教育哲学     

巴文泽 《许昌学院学报》2014,(4):133-136

冯友兰是哲学家,也是教育家,他的教育理念和教学实践以他的教育哲学为基础,其中人性论、境界论和创新论是他教育哲学的主要内容。从人性论出发,冯友兰认为人性既是伦理的也是理智的,所以培养学生要德智双修;从境界论出发,冯友兰着眼学生全面发展,注重提升学生的精神境界;从创新论出发,冯友兰认为教育的关键是培养学生的创新能力。  相似文献   

单摆测重力加速度的比较研究     

刘建伟  翟潞  李婧 《长治学院学报》2014,(5)

用单摆测重力加速是中学物理较重要的实验,本文应用传统方法、计时器、传感器三种测量方式对重力加速度进行测量。三种测量方法均在误差范围内,结果发现利用传感器测量结果误差最小。  相似文献   

武术套路是技击的艺术化   总被引：22，自引：1，他引：21  

刘占鲁  苏长来 《体育学刊》2003,10(2):63-65

探讨套路与技击的关系及套路的艺术特征，主要结论：套路与技击是同属于武术范畴，具有交叉关系的两个概念，攻防含义是它们的共同内容，但这两之间有着根本区别，技击以克敌制胜为主要目的，而套路以表现美为其最高追求，套路在素材的选择，动作创编，动作表现等方面都力求高度的艺术性，同时，套路动作也反映出其创编对攻防的感悟，不同时代，不同地区的武术套路有不同的风格。  相似文献   

Stability studies of common biochemical analytes in serum separator tubes with or without gel barrier subjected to various storage conditions     

Cuhadar S  Atay A  Koseoglu M  Dirican A  Hur A 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(2):202-214

Introduction

The collected and shipped blood samples are exposed to a various extra-analytical factors prior to analysis. The aim of the study was to determine the stability of analytes in serum gel tubes and plain tubes exposed to a range of storage temperatures and times after centrifugation.

Materials and methods:

Fifteen healthy volunteers were recruited and venous blood was collected into four tubes, two with and two without gel separator. Analyzing the baseline samples in 30 min, all were stored at 4ºC or 24ºC for 6, 12, 18, 24, 30, 36, 48 and 72 hours and 1 week. Sixteen biochemical anaytes were measured on each sample. Variations remained under the desirable bias considered as clinically insignificant.

Results:

On day three, most analytes remained stable including albumin, protein, creatinine, cholesterol, triglycerides, gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), alanine aminotransferase (ALT), creatine kinase (CK), lactate dehydrogenase (LD) regardless of tube types. Glucose concentration decreased markedly (P = 0.001) beginning from the first hours of storage in plain serum. The stability maximized for the analytes including glucose, total bilirubin, urea nitrogen (BUN), uric acid stored at 4 ºC in gel tubes. Aspartate aminotransferase (AST) activity increased significantly (P = 0.002) up to 48-h, however bias was not significant clinically. High density lipoprotein (HDL) concentration was stable in gel tubes at 24 ºC, in plain tubes at 4 ºC stored up to 36-h.

Conclusion:

Serum gel or non-gel tubes might be used interchangeably for 11 analytes chilled or at 24 ºC, whereas some restrictions must be applied for glucose, AST, BUN, HDL, and uric acid.  相似文献   

提高《材料力学》教学质量的研究     

刘露  沈玉凤 《中国科技信息》2012,(19):140

材料力学是机械类专业的一门重要技术基础课,对培养学生的工程意识,思维方式都有重要的作用。本文做了提高教学质量的一些研究,包括研究目的的介绍,力学史及工程实例的引入,上课的互动以及教学过程中软件的运用等。在教学实践中对这些措施进行了应用,取得了不错的教学效果。  相似文献   

Effect of a semi electro-mechanical engine valve on performance and emissions in a single cylinder spark ignited engine     

Bülent 《浙江大学学报(A卷英文版)》2010,11(2):106-114

In this study, an electro-mechanical valve （EMV） system for the intake valve ofa fottr stroke, single cylinder, overhead valve and spark ignition （SI） engine was designed and constructed. An engine with the EMV system and a standard engine were tested to observe the effects of the EMV on engine performance and emissions at different speeds under full load. The EMV engine showed improved engine power, engine torque and break specific fuel consumption （BSFC）. A 66% decrease in CO emissions was also obtained with the EMV system, but hydrocarbons （HC） and NOx emissions increased by 12% and 13% respectively.  相似文献   

Inclusive design: developing students' knowledge and attitude through empathic modelling     

Burçak Altay  Halime Demirkan 《International Journal of Inclusive Education》2013,17(2):196-217

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The Effect of Computer-Assisted Learning Integrated with Metacognitive Prompts on Students’ Affective Skills     

Nilgün Tatar  Ercan Akpınar  Eylem Yıldız Feyzioğlu 《Journal of Science Education and Technology》2013,22(5):764-779

The purpose of this study is to investigate the effect of computer-assisted learning integrated with metacognitive prompts on elementary students’ affective skills on the subject of electricity. The researchers developed educational software to enable students to easily and comprehensively learn the concepts in the subject of electricity. A case study method was used. Eighteen students from the seventh grade (12–13 years) participated in the study. Students’ views on their performances while using educational software and the impact of the software on their affective skills towards the subject of electricity were examined. Data were collected by open-ended questions in the educational software. According to the research results, there were students who had negative attitudes and perceptions before starting to learn about the subject of electricity. Interactive activities, animations, and visual experiments in the educational software were effective in overcoming the students’ negative attitudes and perceptions about the subject. Besides, students who assessed their own performances during the learning process believed themselves to be more successful over time. In the light of the research results, some suggestions are made for future studies.  相似文献