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机构地区:[1]广东省深圳市罗湖区疾病预防控制中心,518020
出 处:《中国学校卫生》2016年第3期428-431,共4页Chinese Journal of School Health
摘 要:目的探讨多媒体教室光环境的评价模型,奠定中小学校多媒体教室光环境定量评价的基础。方法参考现行标准及文献建立多媒体教室光环境综合评价指标体系,利用德尔菲和层次分析(Delphi-AHP)法对各指标进行权重分析,以标准值(Ds)、最差期望值(Dw)和最佳期望值(Db)计算评价集,并且利用半梯形分布函数和三角形函数来确立隶属度函数,采用最大隶属度原则,得出量化的评估结果以及所属级别。结果建立了包含18项指标的多媒体教室光环境模糊综合评价模型,其中4个评估层及其相对权重分别为投影性能0.500,桌面照明质量0.296,黑板照明质量0.142,光源性能0.062;指标层含显色指数、光源色温、灯具高度等18项指标,其相对权重前5位为桌面眩光(0.127),投影仪亮度、投影仪对比度和投影仪分辨率(均为0.116),黑板照度和黑板照度均匀度(均为0.061);权重一致性检验结果为0.06<0.1,可接受。评价集V={严重不合格、不合格、合格、良好、优秀};运用该模型对实例进行了评价,评价级别为"良好"(B=0.410)。结论该评价模型将定性指标量化处理,具有较强的可操作性,能够减轻不同主客观因素对于评价结果的影响,解决了传统检验只能得出合格与否的局限,在多媒体光环境状况的监测中具有一定的应用价值。Objective To explore the application of fuzzy evaluation in the evaluation on luminous environment of multimedia classrooms in elementary and secondary schools. Methods According to the current standards and documents, an evaluation index system of multimedia were established. Delphi and analytic hierarchy process( Delphi-AHP) method was used to determine the relative weights. Semi-trapezoid distribution function and triangle function were used to develop the subordination function. Results A fuzzy comprehensive evaluation model of the luminous environment of multi-media classrooms including 18 indexes was established, among which four evaluation levels and their relative weights were as follows: Projection performance was 0. 500; the illuminating quality of desktop was 0. 296; the illuminating quality of blackboard was 0. 142; the performance of light source was0. 062. The index level contained 18 indexes such as color rendering index, color temperature of light source and height of luminaries. Relative weight for glare of desktop was 0. 127; for the luminance, contrast ratio and resolution of projector were 0. 116; for blackboard luminance and the uniformity of blackboard luminance were 0. 061. The inspection result of weight consistency was0. 06, which was acceptable. The model was applied to real situation evaluation( B = 0. 410). Conclusion Practical application of FCE can solve the problem that traditional inspection can only lead to a conclusion of eligible or not properly, it is favorable for comprehensive evaluation of luminous environment.
分 类 号:G449.7[哲学宗教—心理学] G478.1[哲学宗教—发展与教育心理学]
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