高职院校分析化学课程建设的量化评价方法

为了解决高职院校分析化学课程建设的量化评价问题,首先分析了高职院校分析化学课程建设的主要内容,借鉴CIPP评价模式构建了高职分析化学课程建设的评价指标体系,并提出了一种运用模糊层次分析法和量子行为粒子群优化算法计算指标权重的方法;然后运用模糊综合评价法和MATLAB编程技术实现了高职分析化学课程建设成效的量化评价,实例结果表明了其精确、高效,具有一定的实用价值。     

模糊聚类分析评价炭纤维裂解色谱图重现性

利用模糊聚类分析评价了炭纤维表面裂解色谱图的重现性。结果表明,模糊聚类分析可以综合评价谱图重现性,从而为定量计算中谱图的选取提供依据。     

模糊正交法用于石墨炉探针原子化测定铋条件的研究

模糊正交法是通过把正交试验结果模糊化,然后用模糊数学的理论和方法来处理实验数据。与常规正交设计相比,能在同样实验工作量的情况下获得更多的信息。本文采用模糊正交法对元素Bi的测定条件进行优化,并将其同常规正交设计方差分析的结果进行了比较,并提出一个综合评价参数,对建立的分析方法进行了综合评价。     

基于模糊综合评判的中学化学教材质量评价模型研究

在目前已有不同版本高中化学教材面世的情况下,如何选择出符合当地实际的教材成为一个亟待解决的问题。结合一计算实例,将模糊数学的方法应用于化学教材质量评价,建立了化学教材质量评价的模糊综合评判模型。     

氧化物与稀土磷酸盐复合陶瓷的切削加工性评价

应用模糊综合评判原理, 评价可加工陶瓷材料的切削加工性, 判断材料的切削加工性等级.通过Ce-ZrO2/CePO4复合陶瓷的材料制备、性能测试、模糊综合评判和加工实验, 研究了氧化物与稀土磷酸盐复合陶瓷的材料切削加工性.根据模糊数学提出一种可加工陶瓷材料切削加工性的综合评判方法.以陶瓷材料的力学性能参数为因素集, 选择5种切削加工性等级, 根据隶属函数计算模糊矩阵, 通过模糊变换确定出氧化物与稀土磷酸盐复合陶瓷的切削加工性.综合评判结果将所制备的几种Ce-ZrO2/CePO4复合陶瓷材料分为3个切削加工性等级, 材料的切削加工性等级随CePO4含量的增加而提高, 评判结果与钻削实验的材料去除率结果相符.Ce-ZrO2/CePO4复合陶瓷材料的钻削加工表面具有明显的塑性变形加工痕迹.还分析了含LaPO4的其它氧化物复合陶瓷材料的切削加工性等级.材料切削加工性的评价方法建立了材料性能与加工技术之间的关系, 可提供一种新的材料设计方法.     

试验设计与优化方法

本文介绍了作者所在研究小组多年来在试验优化方法方面的研究工作，内容涉及正交试验设计、单纯形优化法、均匀设计法、回归正交设计和模糊正交设计、人工神经网络等多种试验优化设计方法的应用，优化效果的综合评价，多种试验优化设计方法的综合应用等     

四川省重点河段水环境安全性评价

为研究四川省重点河段水环境的安全性,利用综合评价指数法和模糊综合评价决策的数学模型对主要水系干流和支流河段的水质安全性做出了评价.结果显示,岷江流域的水质安全性较差,主要的污染物为重金属汞和铁,沱江和涪江流域的水质安全性较好.     

一种新改进单纯形优化方法

本文采用模糊数学方法计算了多指标综合评价值,并以它作为单纯形优化的目标函数,建立了一种新改进单纯形优化方法,改进了反射基点、形心点和反射系数的计算方法。     

新的聚类方法综合评价血脂指标

本文结合中心聚类和模糊聚类提出了一个新的聚类方法。该法避免了在迭代过程中出现局部最小问题,并可给出每个样本归入每一类的成分矩阵,因而提供更多的聚类程度的信息。应用这种方法对正常人和冠心病患者的血脂指标进行了综合评价,结果满意。     

由酸效应系数计算pH值的新方法

基于酸效应系数αL(H)与溶液酸度的关系,建立了一种由αL(H)手工计算pH值的新方法.该方法无需解高次方程,仅需对lgαL(H)及相关pKa作加减运算、复杂体系也只需增加少量以10为底的乘方运算及常用对数运算即可.因而方法简便,计算误差可预先设置,本文控制不超过5%.     

Insulation and Flame Retardancy Improvement of PBDEs Using 3D-QSAR Model Combined with a Fuzzy Membership Function Method

Athree-dimensional quantitative structure-activity relationship(3D-QSAR) model based on the fuzzy membership function method was developed in this study, and then the model was applied to the molecular design of the enhanced comprehensive activities(insulation/flame retardancy) of polybromi-nated diphenyl ethers(PBDEs) considering their environmental behavior control, to develop environmental-friendly PBDE derivatives with outstanding functionality. Firstly, a fuzzy membership function method was employed to characterize the evaluation values of comprehensive activities of the functional properties of PBDEs based on the 3D-QSAR model. Secondly, a comprehensive activity 3D-QSAR model(CoMFA) of the functional properties of PBDEs was established, which demonstrated robustness and good predictive ability. Thirdly, a molecular modification scheme was designed to enhance the comprehensive activity of the functional properties of PBDEs considering the PBDE homologs BDE-138, BDE-183, and BDE-209 as target molecules. The resulting information indicated that the four PBDE derivatives with significantly enhanced functional properties, such as passing screening for toxicity, bioconcentration, migration, and biodegradability assessments with environmentally friendly results, were successfully designed(43.57%-82.14% enhancement). Finally, the mechanism analysis indicated that the enhanced functional properties of the modified PBDE derivatives were significantly related to the substitution positions and substitution groups of PBDEs.     

SPME/GC-MS在综合评判苹果酒质量中的应用研究

利用顶空法固相微萃取与气相色谱-质谱联用鉴定了8种苹果酒中挥发性香气的主要成分；选取对苹果酒总体香气贡献较大的7种高级醇类和6种酯类，并以2-辛醇为内标，测定了它们的含量；并构建了高级醇类和酯类的模糊综合评判隶属函数模型；利用模糊综合评判法得出了5^#为最优苹果酒，6^#次之，与感官品评结果相一致，表明本文提出的方法可行，且比传统的方法更具有优越性、客观性，更能全面地利用酒样信息。     

Use of fuzzy regression for calibration in thin-layer chromatography/densitometry

A new fuzzy regression algorithm was successfully applied to calibration in thin-layer chromatography (TLC)/densitometry. Different regression techniques were also considered, and objective quality coefficients were used for evaluation of the results. Depending on the structure of the data, the fuzzy procedure can improve the results dramatically. From the results reported in this paper and other unpublished results, it appears clear that the calibration procedure based on fuzzy regression is the most suitable regression method in quantitative TLC.     

水环境重金属污染的现状及其评价

水环境重金属污染问题已十分普遍。国内外已制定了许多相关的法律法规、评价标准和评价方法。水环境重金属污染的评价主要包括水质直接评价和沉积物评价。水质的评价方法主要有：指数法、分级评分法、概率统计法、模糊数学法等;沉积物的评价方法则包括：化学分析指数法、生物监测评价法及化学与生物学相结合的C—B—T质量三合一方法(Triad)和相平衡分配方法(Eqp)等。一般认为以化学和生物学相结合的方法来评价比较合适。     

Fuzzy logic-based procedures for GMO analysis

Key to sound validation studies is the formalization and harmonization of procedures for design of experiment and interpretation of results. International guidelines (ISO 5725, ENGL) are available for the validation of GMO detection methods, and ad-hoc validation statistics (e.g. per cent bias, repeatability and reproducibility) are used for in-house and inter-laboratory testing and decision-making. Acceptability criteria have been set but not every situation can be covered by a preset rule; the interpretation of results in validation largely depends on expert judgement being a matter of professional judgment and expertise. Fuzzy logic-based techniques may be used to summarize the information obtained by independent validation statistics and are helpful in such respect. A comprehensive indicator of method performance permits direct comparison between methods and facilitates the evaluation of multiple, yet contradictory statistics. The European Union Reference Laboratory for GM Food and Feed has already proposed the fuzzy principle in the context of method validation. Other studies have also proved its applicability in other areas of GMO analysis, but the application has been limited hitherto. In this article, we review the fuzzy logic principle and its potential to support the continuous progress of GMO science and routine laboratory analyses.     

物理化学教学的形成性评价探索与实践

在Blackboard (Bb)教学平台基础上,综合利用线上线下教学资源,构建陕西师范大学物理化学理论课程教学的形成性评价体系,对学生自主学习、总结提升、效果检测三方面进行综合性评价。这种贯穿整个教学过程的形成性评价方式对学生的有效学习起到了积极的促进作用。