Dose–response relations between preschool teachers’ exposure to components of professional development and increases in quality of their interactions with children     

Robert C. Pianta  Jamie DeCoster  Sonia Cabell  Margaret Burchinal  Bridget K. Hamre  Jason Downer  Jennifer LoCasale-Crouch  Amanda Williford  Carollee Howes 《Early childhood research quarterly》2014

The present study examined the pattern of associations over time between the quality of observed interactions and exposure to features of an effective coaching model for 170 preschool teachers enrolled in a study investigating professional development impacts. Using a treatment-on-the-treated approach, teachers exposed to a greater number of cycles of coaching showed more improvement in classroom interactions over the year. More specifically, of the two components of treatment examined, video exemplars and individual coaching prompts, exposure to prompts was associated with growth from baseline in instructionally supportive interactions while watching video exemplars was associated with growth in emotionally supportive behaviors in analysis of linear effects. Watching emotional support video exemplars was negatively associated with growth in classroom organization behaviors. The non-linear pattern of these associations suggested that the initial dosage of prompts created observable effects on instructional support, but after a certain point additional dosage was not effective. Conversely, initial dosage did not create observable effects on emotional support, but improvement was observed after exposure to a certain minimum dosage of time watching video exemplars. The results have implications for the design, delivery, and focus of professional development for early childhood educators.  相似文献   

反讽回应话语的性别差异研究——以《傲慢与偏见》为例     

杨红 《黑龙江教育学院学报》2014,(11):128-132

反讽话语作为一种交际手段在跨文化交际中扮演重要的角色。Sperber和Wilson认为,反讽话语在本质上是回应的,并据此提出了反讽回应理论。以该理论为框架,比较分析男女性在反讽话语使用过程中目标对象、表达方式及语用策略三方面的差异,旨在为跨文化交际学和语用学的跨学科研究做出有益尝试。  相似文献   

人工呼吸通气量与猫体重的关系     

童传旺 《巢湖学院学报》2014,(6):90-94

探讨电生理实验中猫的人工呼吸通气量与体重之间的关系。方法:在电生理实验过程中固定呼吸频率,根据猫呼出的CO2含量来调整潮气量,并通过记录视皮层细胞的自发和诱发反应来评价猫在人工呼吸条件下的生理机能状态。结果:共对10只猫进行了试验研究,其中有8只猫成功存活50小时以上,记录到有明显诱发反应的细胞17-65个,平均每只37个。统计存活50个小时以上的猫的潮气量与体重,发现潮气量与体重的关系符合poly 3方程(y=k0+k1x1+k2x2),拟合数据与实测数据的相关性值为0.916。意义:本研究对电生理实验中猫的人工呼吸参数的估计和设置有重要的参考价值。  相似文献   

纠正性反馈在少数民族大学英语课堂教学中的实践研究     

刘福生 《兰州石化职业技术学院学报》2014,(2):63-64

纠正性反馈是交际教学与语言形式教学整合的有效途径。实证研究表明,显性反馈比隐性反馈的效果更显著,而隐性反馈又比控制组的效果更明显。因此,显性与隐性反馈贯穿于课堂教学是提高学生准确流利地运用语言的有效方法。  相似文献   

生物质炭对铝胁迫下常绿杨生理特征的影响   总被引：1，自引：0，他引：1  

黄韡  吴承祯  钱莲文 《莆田学院学报》2014,(2):42-45,59

在不同用量生物质炭的处理下,测定铝胁迫状态下的常绿杨的二氧化碳(CO2)响应曲线、光响应曲线、荧光参数和碳酸酐酶活性,研究生物质炭的输入对铝毒害的改良效果。结果表明:生物质炭的输入使得常绿杨的净光合速率(Pn)对CO2浓度和光强的响应均有明显的提高;实际量子产量(ΦPSⅡ)和表观电子传递速率(ETR)也明显改善;最大量子产量(Fv/Fm)和光化学淬灭系数(qP)变化不大;碳酸酐酶活性也有较大幅度的提高;本实验条件下,生物质炭的用量为3%时,效果最为明显。  相似文献   

福建城镇化发展水平与经济增长关系实证研究     

陈志龙 《莆田学院学报》2014,(6):42-46

根据福建省1982—2012年的时间序列数据,选用向量自回归模型,对福建省城镇化发展水平与经济增长进行动态计量分析。实证结果表明:福建省城镇化发展同经济增长之间相互正向拉动,是一种长期的稳定均衡关系。短期内城镇化发展是经济增长的格兰杰原因,并且城镇化的发展对经济增长的推动作用要强于经济增长对城镇化的作用。  相似文献   

Thermal Response Test by Improved Test Rig with Heating or Cooling Soil简   总被引：1，自引：1，他引：0  

付文成  朱家玲  张伟 《天津大学学报(英文版)》2014,20(1):15-20

An improved test rig providing both the heat and cold source was used to perform thermal response test(TRT), and the line source model was used for data analysis. The principle of determining the temperature difference between the inlet and outlet of test well can keep the heating or cooling rate constant, along with a reduced size of test rig. Among the influencial factors of the line source model, the temperature difference was determined as the most important, which agreed with the test results. When the gravel was taken as the backfill material, the soil thermal conductivities of heating and cooling at the test place were 1.883 W/(m·K) and 1.754 W/(m·K), respectively, and the deviation of TRT between heating and cooling soil was 6.8%. In the case of fine sand, the thermal conductivities of heating and cooling were 1.541 W/(m·K) and 1.486 W/(m·K), respectively, and the corresponding deviation was 6%. It was also concluded that different velocities of water had less influence on TRT than the temperature difference.  相似文献   

Closing the feedback loop? Iterative feedback between tutor and student in coursework assessments     

Martin Barker  Michelle Pinard 《Assessment & Evaluation in Higher Education》2014,39(8):899-915

We evaluate the case for using feedback iteratively, to improve student engagement and learning. In this model, students were invited to respond to tutor feedback with students’ own responses. Among the three courses/modules (three tutors) studied, differences in feedback styles were evident from: (a) thematic analysis of tutor comments and, for one course, and (b) comments in a student focus group. Students were inconsistent in their evaluation of tutor feedback but, in a more detailed study of one of the courses, there was clear evidence for the benefits of iterative feedback. Lessons from the main study were then applied to a course that had not previously incorporated iterative feedback. Using this experience, we provide suggestions for applying iterative feedback in assessments.  相似文献   

Phase error correction for fringe projection profilometry by using constrained cubic spline     

Jun-Zheng Peng  ;Hang-Kong Ouyang  ;Quan Yu  ;Ying-Jie Yu  ;Ke-Sheng Wang 《上海大学学报(英文版)》2014,(1):39-47

In fringe projection profilometry, the nonlinear intensity response caused by the γ effect of a digital projector results in periodic phase error and therefore measurement error. Previous error correction methods are largely based on the calibration of single γ value. However, in practice, it is difficult to accurately model the full range of the intensity response with a one-parameter γ function. In this paper, a compensated intensity response curve is generated and fitted with the constrained cubic spline. With the compensated curve, the full range of the nonlinear intensity response can be corrected and the periodic phase errors can be removed significantly. Experimental results on a flat board confirm the average root mean square （RMS） of the phase error which can be reduced to at least 0.0049 rad.  相似文献   

球员场外不良行为与领导回应态度对球迷团队认同感的影响     

蔡晓红  冯琰 《北京体育大学学报》2010,(9)

研究以社会认同理论和平衡理论为理论依据,采用Trail和Janmes的团队认同问卷,借助现代互联网络技术,对成都足球俱乐部的部分球迷发放网络问卷,调查球员的场外不良行为以及不同领导回应态度对球迷团队认同感的影响。结果表明,高认同感球迷在球员发生场外不良行为时,主要通过主观偏袒和害群之马效应来为球队免责,继续维持其较高的团队认同感;而且,球队领导的积极回应态度和处理方式只会对高认同感球迷的团队认同感的维持有效。  相似文献