机构

• 长春光学精密机械与物... [1]
• 心理研究所 [1]

采集方式

• OAI收割 [2]

内容类型

• 会议论文 [1]
• 期刊论文 [1]

发表日期

• 2009 [1]
• 2006 [1]

学科主题

• 教育心理学 [1]

筛选

浏览/检索结果: 共2条，第1-2条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Keeping their attention: Classroom practices associated with behavioral engagement in first grade mathematics classes in China and the United States 期刊论文  OAI收割 EARLY CHILDHOOD RESEARCH QUARTERLY, 2009, 卷号: 24, 期号: 2, 页码: 198-211 作者:  Lan, Xuezhao;  Ponitz, Claire Cameron;  Miller, Kevin F.;  Li, Su;  Cortina, Kai   |  收藏  |  浏览/下载：17/0  |  提交时间：2011/08/22 Behavioral engagement  Cross-cultural comparison  First grade  Mathematics instruction  Chinese children   The application study on building materials with computer color quantification system (EI CONFERENCE) 会议论文  OAI收割 ICO20: Illumination, Radiation, and Color Technologies, August 21, 2005 - August 26, 2005, Changchun, China 作者:  Yu H.;  Li Z.;  Li Z. 收藏  |  浏览/下载：24/0  |  提交时间：2013/03/25 The first impression of any building to a person is its exterior and decoration  therefore  at the same time  and therefore the quality of decoration project shows the more important position in building project. A lot of projects produce quality problem because of the material color difference  how to grasp and control the color change of building materials  the color difference problem laying stone materials is also studied in this paper  which exists universally at the common project  and carry out color quantification  and the solution scheme has been given using this system.  and is often found at the high-grade decoration  it has the very important meaning. According to the color theory  a computer vision system used in color quantification measurement is established  the standard illuminant A is selected as the light source. In order to realize the standardization of color evaluation  the mutual conversion between RGB and XYZ color space is studied  which is realized by the BP network. According to the colorimetry theory  the computer program is compiled in order to establish the software system  and realize the color quantitative appraisement in whole color gamut. LCH model is used at quantifying the color of building materials  and L*a*V model is used at comparing the color change. If the wooden floor is selected and laid improperly during family fitment  it is easy to present "flower face". The color also arises greater discrepancy using the laths of same tree. We can give the laying scheme using the color quantification system