目的通过对设备5个维度的模糊互补判断矩阵进行一致性检验和一致性改进,利用改进的加权优劣解距离法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)得到影响设备综合效益的各个指标权重,对在用设备综合效益...目的通过对设备5个维度的模糊互补判断矩阵进行一致性检验和一致性改进,利用改进的加权优劣解距离法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)得到影响设备综合效益的各个指标权重,对在用设备综合效益应用效果进行评价分析。方法利用模糊综合评价——改进TOPSIS分析,对影响设备综合效益指标权重进行科学、合理分配。结果影响设备技术状态、经济效益、社会效益、配置合理和科研效益的5个维度13项指标权重分别为W1=(C1=0.077,C2=0.077,C3=0.046,C4=0.031)^T,W2=(C5=0.103,C6=0.103,C7=0.075)^T,W3=(C8=0.052,C9=0.078)^T,W4=(C10=0.056,C11=0.024)^T和W5=(C12=0.14,C13=0.14)^T。在用设备综合评价结果为:AS128 CT>E9彩超>DSA>1.5T MRI>乳腺钼靶>高频热疗机>光子射频仪。结论结合两种方法综合应用,使综合评价设备使用效益更有科学性、合理性及适用性。展开更多
Fuzziness is one of the general characteristics of human thinking and objective things. Introducing fuzzy techniques into decision-making yields very good results. Fuzzy consistent matrix has many excellent characteri...Fuzziness is one of the general characteristics of human thinking and objective things. Introducing fuzzy techniques into decision-making yields very good results. Fuzzy consistent matrix has many excellent characteristics, especially cen- ter-division transitivity conforming to the reality of the human thinking process in decision-making. This paper presents a new approach for creating fuzzy consistent matrix from mutual supplementary matrix in fuzzy decision-making. At the same time, based on the distance between individual fuzzy consistent matrix and average fuzzy consistent matrix, a kind of combined opera- tion for several fuzzy consistent matrixes is presented which reflects most opinions of experienced experts. Finally, a practical example shows its flexibility and practicability further.展开更多
There are many potential sources of risks which may cause bridge failures and result in numerous economic and human losses during the construction of bridges. Therefore,risk assessment for bridges during construction ...There are many potential sources of risks which may cause bridge failures and result in numerous economic and human losses during the construction of bridges. Therefore,risk assessment for bridges during construction should be taken rigorously to avert bridge failures and casualties. This article presents a fuzzy logic-based method which integrates the fuzzy analytical hierarchy process( FAHP) method based on a 3-point scale,fuzzy logic,and fuzzy set theory into a single synthetic method. In this method,the FAHP method based on a 3-point scale was used to identify and rank diverse risk factors,and fuzzy logic and fuzzy set theory were used to process inaccurate datasets including non-statistical information. After the concept and procedure of the FAHP method based on a 3-point scale were demonstrated,the proposed fuzzy logic-based method was used to perform risk assessment on the Aizhai Suspension Bridge with a main span length of1 176 m in China. The results show that the proposed method can more effectively carry out risk assessment of bridges during construction.展开更多
文摘目的通过对设备5个维度的模糊互补判断矩阵进行一致性检验和一致性改进,利用改进的加权优劣解距离法(Technique for Order Preference by Similarity to Ideal Solution,TOPSIS)得到影响设备综合效益的各个指标权重,对在用设备综合效益应用效果进行评价分析。方法利用模糊综合评价——改进TOPSIS分析,对影响设备综合效益指标权重进行科学、合理分配。结果影响设备技术状态、经济效益、社会效益、配置合理和科研效益的5个维度13项指标权重分别为W1=(C1=0.077,C2=0.077,C3=0.046,C4=0.031)^T,W2=(C5=0.103,C6=0.103,C7=0.075)^T,W3=(C8=0.052,C9=0.078)^T,W4=(C10=0.056,C11=0.024)^T和W5=(C12=0.14,C13=0.14)^T。在用设备综合评价结果为:AS128 CT>E9彩超>DSA>1.5T MRI>乳腺钼靶>高频热疗机>光子射频仪。结论结合两种方法综合应用,使综合评价设备使用效益更有科学性、合理性及适用性。
基金Project (No. 20040335129) supported by the Specialized Research Fund for the Doctoral Program of Higher Education (SRFDP) China
文摘Fuzziness is one of the general characteristics of human thinking and objective things. Introducing fuzzy techniques into decision-making yields very good results. Fuzzy consistent matrix has many excellent characteristics, especially cen- ter-division transitivity conforming to the reality of the human thinking process in decision-making. This paper presents a new approach for creating fuzzy consistent matrix from mutual supplementary matrix in fuzzy decision-making. At the same time, based on the distance between individual fuzzy consistent matrix and average fuzzy consistent matrix, a kind of combined opera- tion for several fuzzy consistent matrixes is presented which reflects most opinions of experienced experts. Finally, a practical example shows its flexibility and practicability further.
基金Sponsored by the Ministry of Science and Technology of China(Grant NoSLDRCE14-B08)
文摘There are many potential sources of risks which may cause bridge failures and result in numerous economic and human losses during the construction of bridges. Therefore,risk assessment for bridges during construction should be taken rigorously to avert bridge failures and casualties. This article presents a fuzzy logic-based method which integrates the fuzzy analytical hierarchy process( FAHP) method based on a 3-point scale,fuzzy logic,and fuzzy set theory into a single synthetic method. In this method,the FAHP method based on a 3-point scale was used to identify and rank diverse risk factors,and fuzzy logic and fuzzy set theory were used to process inaccurate datasets including non-statistical information. After the concept and procedure of the FAHP method based on a 3-point scale were demonstrated,the proposed fuzzy logic-based method was used to perform risk assessment on the Aizhai Suspension Bridge with a main span length of1 176 m in China. The results show that the proposed method can more effectively carry out risk assessment of bridges during construction.
