含参量正数齐次核的Hilbert型积分不等式          下载免费PDF全文

许金泉 《惠州学院学报》2010,30(3):5-9

通过估算权函数,建立一个含参量的正数齐次核的Hilbert型积分不等式,并证明其常数因子为最佳值.  相似文献   

屋顶花园对建筑物结构安全性的影响     

徐福卫  陈海玉  秦丽  郭声波 《襄樊学院学报》2010,31(2):16-19

针对屋顶花园的建设对建筑物结构的安全性的影响的问题进行深入研究,利用ANSYS有限元计算软件对建筑物进行竖向自重荷栽三维有限元静力分析计算,得出屋顶花园建造增加不超过6．30kN／m2的荷载对建筑结构的影响相对较小,不会对整个建筑结构产生安全方面的影响．  相似文献   

区间直觉模糊集的多属性综合评价新方法．     

李侠  邹斌 《合肥联合大学学报》2013,(1):4-7

针对研究对象属性值为区间直觉模糊集形式的多属性决策问题,提出了一种利用区间直觉模糊熵确定属性权重并进行综合评价的方法．该方法的基本思路：用区间直觉模糊熵来定义各方案在不同属性下的权重,将各方案对应的权重视为一种概率分布,基于这种假设利用相对熵集结模型得到区间直觉模糊集的客观优化权重．最后给出了一个算例,说明了该方法的可行性和优越性．  相似文献   

基于AHP法和熵权法的独立学院教师绩效考核     

蔡文娟 《重庆师专学报》2013,(5):128-131

文章针对独立学院教师绩效考核过程中存在指标体系不健全、考核成绩计算过程中各项目权重分配不科学等问题,提出将基于层次分析法的主观赋权法与基于熵的客观赋权法相结合的主客观赋权法,以此提高权重分配的科学性与准确性;最后,选取某独立学院的教师进行实证分析.  相似文献   

Peer assessment in group projects accounting for assessor reliability by an iterative method     

Sung-Seok Ko 《Teaching in Higher Education》2013,18(3):301-314

This study proposes an advanced method to factor in the contributions of individual group members engaged in an integrated group project using peer assessment procedures. Conway et al. proposed the Individual Weight Factor (IWF) method for peer assessment which has been extensively developed over the years. However, most methods associated with IWF use a simple average algorithm which still has limitations in effectively reflecting abnormal situations. Therefore, this study proposes an iterative method for measuring a fair IWF by considering each assessor's reliability. The proposed algorithm considers each assessor's reliability which is evaluated by an analysis of variance of the scores given by the assessor. This relative reliability factor is used to improve the fairness of the IWF and reduce the effect of unfair or unreliable assessors' scores. A comparison with previous methods demonstrates that the proposed method resulted in substantially more fair grades being given to individual students for group projects.  相似文献   

基于粗糙集的组合属性重要度确定单属性重要度新方法     

孙立民  金祥菊 《茂名学院学报》2013,(6):57-59

为改进属性重要度概念,给出了一种基于粗糙集理论的单属性重要度和组合属性重要度结合的确定属性重要度的方法。通过实例考证表明,改进的粗糙集重要度计算方法具有普适性,解决了在文献[3]中提出而没有解决的问题。  相似文献   

一种基于粗糙集的供应链合作伙伴选择新方法     

金祥菊  孙立民 《茂名学院学报》2013,(6):60-62,64

用粗糙集中组合属性重要度确定单属性重要度的理论,给出了供应链最佳合作伙伴选择的新方法,改进了文献[1]的粗糙集评价方法,新方法计算的指标权重结果避免了文献[1]中计算的指标权重为0的情况出现,同时新算法计算的各指标重要度之和比原算法各指标重要度之和大,计算精度更高,评价结果更符合实际。  相似文献   

基于熵权法的改进尼梅罗法在地下水环境质量评价中的应用     

董洪信  杨立华  张明轩 《六安师专学报》2013,(5):93-96

结合《地下水质量标准》（GB/T14848-93）评价标准,选取8种具有代表性的污染物质作为评价因子.采用考虑了权重最大值的改进尼梅罗方法,结合更为客观的熵权法确定各评价因子的权重,对淮南16个地下水水样进行了地下水环境质量评价.评价结果能够合理地区分地下水水质,较为客观地反映其水质状况.  相似文献   

Fault diagnosis model based on fuzzy support vector machine combined with weighted fuzzy clustering     

张俊红  马文朋  马梁  何振鹏 《天津大学学报(英文版)》2013,19(3):174-181

A fault diagnosis model is proposed based on fuzzy support vector machine (FSVM) combined with fuzzy clustering (FC).Considering the relationship between the sample point and non-self class,FC algorithm is applied to generate fuzzy memberships.In the algorithm,sample weights based on a distribution density function of data point and genetic algorithm (GA) are introduced to enhance the performance of FC.Then a multi-class FSVM with radial basis function kernel is established according to directed acyclic graph algorithm,the penalty factor and kernel parameter of which are optimized by GA.Finally,the model is executed for multi-class fault diagnosis of rolling element bearings.The results show that the presented model achieves high performances both in identifying fault types and fault degrees.The performance comparisons of the presented model with SVM and distance-based FSVM for noisy case demonstrate the capacity of dealing with noise and generalization.  相似文献   

基于变权AHP法的高校奖学金评定     

裴会青 《绵阳师范高等专科学校学报》2013,(11):37-42

结合目前多数高校奖学金评定制度,选取学习成绩、学生工作、获奖情况和民主投票这四个因素作为评定指标,首先采用加权平均法和变权平均法求出学习成绩,并对各指标进行量化,进而利用变权A胛法算出最终排名,最后对本文方案进行分析．  相似文献