光谱模糊匹配评价同色异谱程度

根据扬-赫姆霍尔兹对立学说，运用模糊性度量中平均Hamming距离的概念，提出了以光谱视觉响应差异为基础的同色异谱程度评价方法，分析结果表明该评价方法优于CIE的评价方法。     

交换关联势对PbS电子结构的影响

基于第一性原理总能量平面波全势方法,采用广义梯度近似(GGA)和局域密度近似(LDA)的不同的交换关联势,分别计算面心结构(NaCl结构)PbS的总能,并给出了体系平衡时的晶格常数.讨论了不同交换关联势对晶格常数的影响;分析了体系平衡时的能带结构、能隙、态密度和分波态密度.结果表明交换关联对电子结构有显著影响.     

纺织品白色试样的色度评价——均匀白度公式

运用颜色理论,以Canz的研究结果为基础,提出了均匀白度公式。研究结果表明它在视觉相关性、均匀性及适用性等方面明显优于CIE推荐的白度公式。     

三刺激值向孟塞尔标号的计算机转换

目前,孟塞尔标号通常采用查图表法或视觉法来确定,但其结果因人而异。本文根据已知孟塞尔标号的分立数据,提出了三刺激值向孟塞尔标号转换的计算方法。首先根据孟塞尔明度值与亮度因数的函数关系,通过叠代法计算获得孟塞尔明度值。孟塞尔色调和彩度必须先在色空间中找到与样品最接近的8个色卡点,然后通过线性插值得到。如何寻找8个色卡点,文中作了详细描述。计算机转换的结果与实际比较,色调和彩度的误差不超过0.2。同时该方法减轻了劳动强度,提高了工作效率,促进了计算可靠性。     

Plasma Immersion Ion Implantation of the Pea Seed and Its RBS Spectra

Plasma immersion ion implantation (PI~3), a new technique with certain advantages over biological samples, was developed. Argonion as well as nitrogen ion implantation of the pea seeds has been carried out with the PI~3 implanter and their RBS spectra were also studied. The results show that the mass deposition effect of ion implantation on biological samples can be achieved with the PI~3 implanter. In addition, there is an optimal implantation time for a given treatment condition. It presents new possibilities for the ion implantation into biological samples.     

Recipes Prediction by Matching to K/S Values Based on New Two-constant Theory

A concept of new two-constant of colorant, both （ R/St ） and （s/St）, is introduced based on the Kubelka-Munk theory. A new two-constant theory for color matching is presented. Basic equations used in matching to K/S values are given in matrix form based on the new two-constant theory. Algorithm for a least-squares match to K/S values of a sample is developed by use of the new two-constant theory. The algorithm is suitable for single-constant theory as well as two-constant theory. The experimental data show that calculating K/S values of disperse dyes based on new two- constant theory are accordant with the measuring ones. The recipes predicted by new two-constant theory arc closer to the actual recipes of the standard sample than the recipes predicted by single-constant theory. The sample according to the recipe predicted by new two-constant theory has smaller color difference against for the standard than the sample according to the recipe predicted by single-constant theory. The results show that the scattering of disperse dyes cannot be negligible, and that the recipes match to textiles colored by disperse dyes should be predicted by using of new two-constant theory.     

准直照明下Atherton理论的修正

本文纠正了Atherton理论中的错误,导出了在准直照明条件下色料反射率R_∞与吸收系数和散射系数之比(K/S)的关系——CI函数。K-M函数、Atherton函数和CI函数在色料反射率R_∞不是很大时,都主要是反射率的反商函数。假设染料的散射可忽略,那么他们都与染料浓度存在线性关系,因此在单常数配色时,染料强度评价和颜色深度评价时,都能得到相同的结果。     

在有压缩真空注入的腔中∧型三能级原子的稳态粒子布居

用主方程方法研究了有压缩光入射的腔中受激光场驱动的∧型三能级原子的稳态行为，在劣持腔近似下讨论了原子的稳态粒子布成值的特点，发现腔的作用降低了压缩真空中的双光子关联，原子的相干跃迁速率和压缩真空的位相对原子的稳态粒子布居有很大影响。     

纺织品白色试样的色度评价——二元色泽公式

根据颜色理论导出了白色试样的二元色泽评价公式,即黄度公式YI和绿度公式GI,从而完善了国际照明委员会(CIE)推荐的一元色泽公式T_W,并提高了色泽评价的均匀性。同时建立了黄度YI与白度T_W和明度L三者之间的关系以及缘度GI与色泽T_(W,10)之间的近似关系,从而在理论上明确了色泽评价经验公式T_(W,10)和黄度评价的色度学含义。     

准直照明下Atherton理论的进一步修正

进一步修正了Atherton理论,提出了双常数四通道模型(TF模型),导出了在准直照明条件下包料反射率与吸收系数和散射系数之比的关系。该修正理论解决了CI公式不适用于浅色状态的局限性,同时使Atherton理论与Kubelka-Munk理论得到了统一。