共查询到20条相似文献,搜索用时 796 毫秒
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建筑景观照明中对彩色光的应用和建筑材质的联系缺乏理论支持和科学定量的依据,具有很大的盲目性和随意性,而研究建筑材质色光唤起的情感偏好是解决上述问题的关键。通过对建筑景观照明进行视觉心理分析,从而达到辅助设计的目的,这对提高人们对建筑景观照明的满意度和营造适宜的照明氛围有着重要意义。本文在实验室条件下,以"计算机—等离子电视机"组成的色光再现输出设备为实验平台,对再现的建筑景观照明中常用的5种真实光源与4种典型建筑材质组合成的20个样本,用21个情感尺度通过语义分析法进行30人的主观评价实验。通过因子分析提取出活动性、评价性共2个公共情感因子;针对5种光源下不同建筑材质的情感因子得分分别进行统计分析,给出了不同光源对应的正、负向主导情感和色光偏好参量化表达,并建立了基于2个公共情感因子的建筑材质真实光源色光偏好预测数学模型。 相似文献
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景观泛光照明质量与环境的几个问题 总被引:6,自引:2,他引:6
本文结合实地测试与考察,对城市景观照明中的一些影响景观质量的问题,如亮度、色光应用,及照明与建筑的适应等进行了探讨。并从光环境及光污染的角度对景观照明进行反思。 相似文献
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这是一项利用人工照明及光生物领域的最新研究成果,研究光生物效应作用下,我国大学教室照明光环境的实验构想。实验针对我国大学教室最常用的、不同光色的荧光灯光源及在未来可能替代荧光灯的白光LED光源,通过对学生的反应时间和瞳孔大小变化等进行分析,研究照明光源的光谱分布及照明水平差异对学生心理、生理健康和学习效率的影响,以期为教室照明光生物效应照明标准,以及最佳光色光源和照明模式提出建议。 相似文献
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《电气》2011,(2):14-18
With the incessant development of power market reform,the existing cross-subsidy in electricity tariffs has become a critical problem in China’s power industry development.On the basis of the theories of cross-subsidy and electricity universal service,the authors take foreign countries’ experience as reference to design several solutions to cross-subsidies in electricity tariffs in different phases of China’s power industry development.Furthermore,the application and implementation of these solutions are analyzed in this paper. 相似文献
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The author suggests that the confidence which many biologists have in problem-solving methods is unwarranted and that there are very important limitations in almost all current methods for solving biological problems. The standard problem solving approach that computer scientists use is outlined. An example of an error in an evolutionary tree problem-the case of the African Eve-is discussed 相似文献
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无色透明材料形成的单层薄膜,其颜色由干涉色决定。以白光照射其表面,随薄膜厚度的增加,将出现一系列色彩,这是由薄膜干涉所致。我们可以根据薄膜颜色,估计薄膜厚度。显然,当厚度增大到后界面的影响可以忽略不计的程度(相当于只有一个界面的半无限大情形,本文简称“厚膜”),则“厚膜”颜色恢复为无色透明。半透明材料在基底上形成的薄膜系统,以白光照射所呈现的颜色,由于基底及吸收的影响,则不能简单地以薄膜干涉来分析。对于半透明薄膜系统,首先测量它的光强反射率谱和透射率谱,运用传递矩阵[1]方法计算出薄膜的介质光学常数,再以光学常数计算单层薄膜与“厚膜”的光强透射率谱与反射率谱及它们的色坐标。以菲涅耳公式计算出的反射率谱为半无限大介质反射率谱,这时的色坐标可视为“厚膜”的色坐标。 相似文献
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A survey is provided of Japanese research on ceramic materials for substrates, microwave dielectric ceramics, piezoelectric ceramics, semiconducting ceramics, and superconducting ceramics. Novel processing technologies are described, covering the use of amorphous materials, superfine powders, lamination, multilayer thin films, porous ceramics, and superlattices 相似文献
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Recent progress in inverse problems in electrocardiology 总被引:5,自引:0,他引:5
The considerable progress achieved in the inverse problem of electrocardiography over the last decade has provided grounds for optimism about the possibility of approaching significant clinically relevant applications in the next decade. However, there are a number of basic questions that still remain. In addressing these questions, the authors feel it is important to seek solutions that emphasize physiological rather than mathematical significance. This approach leads to twin requirements for useful inverse solutions: accuracy, defined in a physiologically meaningful (and not just averaged and mathematical) sense, and reliability, not only to measurement noise but also to geometric modeling errors and other uncertainties that are inescapable in practical application. Studies using analytically tractable models may still be relevant, but it seems more important to find solutions to practical inverse problems, which will move the field toward wider acceptance and credibility 相似文献
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