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Search Results: 1 - 10 of 73480 matches for " 孙小红 "
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中学生学习幸福感的测评研究
小红,谭顶良
- , 2017, DOI: 10.16382/j.cnki.1000-5560.2017.02.010
Abstract: 摘要 对中学生学习幸福感结构模型提出两种理论构想:由3维度组成的二阶模型1(M1)和4维度组成的二阶模型2(M2)。编制87个题项的测量量表对7818名中学生进行初测,经探索性因素分析和验证性因素分析,依据心理测量原理修订成由58个题项构成的2015版中学生学习幸福感量表,用5646个被试数据对两种理论模型进行比较,结果表明M2更为理想。最终确定中学生学习幸福感的结构为由学习兴致与学习效能感构成的愉悦感,由学力优越感、学业乐观和求解欲构成的希望感,由积极关系构成的亲善感以及由喜新感和流畅感构成的沉浸感这8个一阶因子4个二阶维度组成的二阶结构模型。中学生学习幸福感量表具有较高的信度和效度。
Abstract:Following the theories and extensive studies on the learning happiness of secondary school students both in China and other countries, and based on the survey among teachers and students through interviews and descriptive questionnaire, this study first defined the learning happiness of secondary school students as a passion and immersion experienced by students in fulfilling their learning tasks in schools, a sense of pride while learning and a sense of expectation as well as multi-level pleasure generated in the process. It then suggested two models of learning happiness of secondary school students: M1 (a second order model consisting of eight first order factors and three second order dimensions), and M2 (a second order model consisting of eight first order factors and four second order dimensions). Based on the theoretical framework, the study designed a learning happiness scale containing 87 items and conducted a preliminary measurement on 7,818 secondary school students. The two models were tested and compared through an exploratory factor analysis and confirmatory factor analysis. The result showed that M2 was more desirable. It is confirmed that learning happiness of secondary school students involves pleasure consisting of interest and efficacy, hope consisting of stronger learning capacity, optimism and inquisitiveness, rapport consisting of positive relationships and immersion from a sense of freshness and fluency. After revising the learning happiness scale and deleting some items, the authors developed the final version of the 2015 scale of secondary school students' learning happiness, which consists of 58 items in four sub-scales to measure pleasure, hope, rapport and immersion. Further test of the psychometric properties showed the split-half reliability was 0.893; internal consistency was 0.929; the root mean square residual was 0.070 and the main fit indexes all reached 0.97. The overall psychometric test results showed considerable reliability and validity. The psychological measurement indicators showed that the scale was of good performance.
郁 金 香 促 成 水 培 技 术 研 究
王国夫,胡绍泉,小红
北方园艺 , 2010, DOI: 10.11937/bfyy.201017041
Abstract:
展毛野牡丹种子特性及花粉活力的初步研究
小红,伟生,罗萍
热带农业科学 , 2014,
Abstract: 对展毛野牡丹的种子特性和花粉活力进行了初步研究,结果表明:展毛野牡丹的种子细小、数量多,千粒重约0.053 g,每果种子数3 000粒左右;种子为不规则三角形,有深浅2种颜色,浅色与深色种子数量比约为1∶1.45。展毛野牡丹种子的适宜萌发温度为25℃,发芽率可达64.73%;能萌发的是浅色种子,深色种子基本不萌发;光对其种子萌发有促进作用。在展毛野牡丹的异型雄蕊中,具有紫色花药的较长雄蕊的花粉活力要高于具有黄色花药的较短雄蕊。
安防监控系统摄像头屡遭雷击原因分析与措施
Cause Analysis and Measures of the Camera Struck Repeatedly by Lightning in Security Monitoring System
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骆明佐, 邓逸,小红, 许根源, 石磊,
Journal of Security and Safety Technology (JSST) , 2014, DOI: 10.12677/JSST.2014.23005
Abstract:
本文分析了安防监控系统摄像头遭雷击现场范围内的闪电数据资料。结果显示,500 m范围内两年遭雷击时的闪电次数达17次,其中雷电流对应的滚球半径大于距雷击点平均距离的仅有1次;雷电脉冲磁感应强度在LPZ0B区不小于0.07 × 10?4 T的有15次,占总的88.2%,在LPZ1区不小于0.07 × 10?4 T的有6次,占总的35.3%。这说明室内外摄像头,遭受直击雷的可能性较小,大多数情况是遭受感应雷击,是摄像头屡遭雷击的主要原因。这对安防监控系统的防雷具有一定指导作用。
This paper analyzes the lightning data of the security monitoring system in the scope of lightning site. The results show that the frequency of thunderstroke in the two years is up to 17 times at the range of 500 meters. Among them, there is only 1 time that the rolling sphere radius of lightning current is larger than the average distance from the lightning point. There are 15 times that lightning impulse electromagnetic induction intensity in LPZ0B area is not less than 0.07 × 10?4 T, which is 88.2% of the total amount, and there are 6 times that lightning impulse electromagnetic induction intensity in LPZ1 area is not less than 0.07 × 10?4 T, which accounts for 35.3% of the total amount. From the results, it is proved that the indoor and outdoor cameras are unlikely to suffer direct lightning flash strike, and in most cases cameras are subjected to inductive lightning, which is the main reason of the camera repeatedly struck by lightning. Therefore, the study has some guidance to the lightning protection of the security camera monitoring system.
(E)-7-(4,6-二甲氧基嘧啶-2-氧基)-2,3-二氢-1H-茚-O-取代-1-酮肟醚类衍生物的合成及除草活性研究有机化学
李元祥,小红, 陈迪钊,
有机化学 , 2013, DOI: 10.6023/cjoc201301052
Abstract: 为了发现具有除草活性的新型分子结构,以苯酚为原料,设计合成了13个未见文献报道的新化合物(E)-7-(4,6-二甲氧基嘧啶-2-氧基)-2,3-二氢-1H-茚-O-取代-1-酮肟醚类化合物.化合物的结构通过1HNMR,MS,元素分析进行了表征确证,其中目标物6h进一步通过了单晶衍射.初步生物活性测试结果表明,在试验浓度下部分化合物显示有一定的除草活性,其中化合物6i和6l对测试杂草表现出20%~40%的抑制活性.
水下爆炸焊接和压实
李晓杰,,闫鸿浩,小红
爆炸与冲击 , 2013, DOI: 10.11883/1001-1455(2013)01-0103-05
Abstract: ?回顾了水下爆炸在军事海战和经济建设方面的应用,并且探索了水下爆炸在工业方面的发展。结合水下冲击波独特的性能,提出了水下爆炸焊接和水下冲击波压实粉末混合物2种加工方法。焊接试样显微组织中典型的波状界面表明水下冲击波对于脆性和薄片材料具有很好的焊接效果。粉末混合物在水下冲击波加载作用下能形成致密体。利用水下冲击波,在纯铜表面制备出了性能优良的弥散强化涂层。涂层内部弥散颗粒分布均匀,高硬度显示了优良的机械性能。
爆炸焊接界面波物质点法三维数值模拟
王宇新,李晓杰,小红,闫鸿浩,
爆炸与冲击 , 2014, DOI: 10.11883/1001-1455(2014)06-0716-07
Abstract: ?基于冲击动力学和爆炸焊接理论,采用物质点法对爆炸焊接界面波的形成进行三维数值模拟。通过数值模拟结果与爆炸焊接实验结果的对比,对复合界面材料的塑性流动变形以及界面波形成的机理进行探讨。结果表明界面波是因为在碰撞点处的金属材料发生熔化并产生涡旋流动形成的;同时也说明采用物质点法模拟爆炸焊接界面波的形成是可行的。
Mie-Grüneisen状态方程的物理力学释义
李晓杰,闫鸿浩,小红,
高压物理学报 , 2014, DOI: 10.11858/gywlxb.2014.02.015
Abstract: 通过建立一种简单的固体一维点阵定容热振动的物理力学模型,完全由力学方程推演出了Mie-Grüneisen形式的固体状态方程,并从力学本质上明确了热压力的物理意义是原子热振动时均值所造成的作用力偏载量。所得Grüneisen系数与频率的关系说明,真实三维晶体的Grüneisen系数与晶体结构相关。在简单立方晶体的情况下,获得了与Dugdale-MacDonald公式形式相同的Grüneisen系数-冷压微分关系式。研究结果证明,在状态方程构建方面,“物理力学”是一种非常有效的研究工具。
基于晶体三维点阵热振动物理力学分析的Mie-Grüneisen状态方程
李晓杰,闫鸿浩,小红,王宇新,
高压物理学报 , 2014, DOI: 10.11858/gywlxb.2014.03.004
Abstract: 根据晶体结构建立了三维定容热振动的微观物理力学模型,由力学方程推导出了点阵热振动能量与外力的微观热振动的力学关系。在微观热振动关系中引入宏观统计物理量,直接从物理力学模型得到了Mie-Grüneisen固体状态方程和Grüneisen系数的表达式。根据晶体结构中的原子排列规律,对简单立方、面心立方、体心立方、金刚石立方晶体和理想密排六方晶体的Grüneisen系数的表达式进行了证明。结果表明,这些对称性晶体结构的Grüneisen系数与冷压具有统一的微分关系,与晶体结构无关。
鼠肝组蛋白与尼古丁作用后的构象变化
小红,红芳,刘元方
科学通报 , 1999,
Abstract: 采用紫外差谱、荧光光谱和圆二色性光谱法对鼠肝组蛋白H1和H3与尼古丁作用后的构象变化进行了体外研究.结果表明,随尼古丁作用剂量的增加其构象逐渐由有序向无序变化.造成这种变化的原因,可能是尼古丁或其代谢产物与组蛋白H1,H3发生加合.因此推测,尼古丁可以通过改变组蛋白的构象来影响染色体的结构、功能和基因表达.
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