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堆石坝坝型优选模型及评价方法研究

陈永兴,常昊天,鲁文妍,任炳昱

《中国工程科学》 2013年 第15卷 第4期   页码 96-101

摘要: 考虑了层次分析和熵权对权重确定的不足,将两者结合起来计算综合权重,并运用TOPSIS对模型进行求解计算,最终确定优选方案。

关键词: 堆石坝     AHP     熵权     TOPSIS     坝型优选    

虚拟企业敏捷性度量的AFHW方法

王硕,唐小我

《中国工程科学》 2002年 第4卷 第7期   页码 29-32

摘要:

提出虚拟企业敏捷性评价指标体系,用改进的层次分析(AHP)和改进的模糊灰色物元(FHW)相结合的AFHW模型进行专家咨询及虚拟企业敏捷性度量计算。

关键词: 虚拟企业     敏捷性度量     AFHW模型     层次分析(AHP)     模糊灰色物元(FHW)    

Comprehensive evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP

ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai

《环境科学与工程前沿(英文)》 2008年 第2卷 第3期   页码 370-379 doi: 10.1007/s11783-008-0054-4

摘要: Through the use of general sampling and measurement by Cs dating, problems regarding the absence of monitoring data can easily be resolved. Further, weighted values need to be determined while Environment Quality Comprehensive Index (EQCI) is commonly used as applied in environmental quality comprehensive evaluation. In order to overcome the subjectivity in determining weights, the modified Analytical Hierarchy Process (AHP) method was designed. The modified AHP method involved the following key procedures: First, the parameters and were calculated based on the monitoring data; second, the factors were put in order according to the symbol and value of and ; third, the continuous odd integers, which represented the importance of factors, were given to factors according to their seating order; and, fourth, the factor weights were determined from the pair-wise comparison matrix calculated by the ratio of the given odd integers. Therefore, the weights were completely based on the monitoring data. In the present study, the comprehensive quality of sediments in five sections of Lake Dianchi were evaluated and the results indicated that the current contamination of sediments in each lake section is much more serious than at any other time in history.

关键词: Dianchi     Analytical Hierarchy     monitoring     modified Analytical     importance    

Evaluating and structuring indicators for wetland assessment

Xuehua LIU, Yan SUN,

《环境科学与工程前沿(英文)》 2010年 第4卷 第2期   页码 221-227 doi: 10.1007/s11783-010-0029-0

摘要: Wetland assessment has been a popular field of research worldwide. However, various indicators have been used in wetland assessment for different purposes and backgrounds and also because of the research limitations. Therefore, a more comprehensive, sound, and efficient indicator system is needed for researchers’ referencing to evaluate wetlands. After an extensive review of wetland assessment literatures, the reported indicators were evaluated using the developed assessment system, based on the Analytical Hierarchy Process (AHP) with three main goals: nature protection, function utilization, and sustainable development. Each indicator was evaluated using two methods. The first method was to study the percentage of the indicator application, and the second was to assess the weighted ratios assigned to the indicators according to principles of comparability, typicality, sensibility, and availability. The results of these two methods were compared to study the commonalities and specialties of the indicators. They also showed that some indicators were widely used, including biodiversity, weather and climate, hydrological change, and the output of wetland. On the other hand, other sustainable indicators were easily ignored, such as environmental carrying capacity and wetland planning. Furthermore, an indicator system for wetland assessment was structured and strategized to discuss how to choose indicators for wetland assessment under different conditions. The proposed approach can be used to guide the process of wetland assessments in the future.

关键词: wetland assessment     indicators     Analytical Hierarchy Process (AHP)     comparison    

SHM-based F-AHP bridge rating system with application to Tsing Ma Bridge

Qi LI, You-lin XU, Yue ZHENG, An-xin GUO, Kai-yuen WONG, Yong XIA

《结构与土木工程前沿(英文)》 2011年 第5卷 第4期   页码 465-478 doi: 10.1007/s11709-011-0135-5

摘要: This paper aims at developing a structural health monitoring (SHM)-based bridge rating method for bridge inspection of long-span cable-supported bridges. The fuzzy based analytic hierarchy approach is employed, and the hierarchical structure for synthetic rating of each structural component of the bridge is proposed. The criticality and vulnerability analyses are performed largely based on the field measurement data from the SHM system installed in the bridge to offer relatively accurate condition evaluation of the bridge and to reduce uncertainties involved in the existing rating method. The procedures for determining relative weighs and fuzzy synthetic ratings for both criticality and vulnerability are then suggested. The fuzzy synthetic decisions for inspection are made in consideration of the synthetic ratings of all structural components. The SHM-based bridge rating method is finally applied to the Tsing Ma suspension bridge in Hong Kong as a case study. The results show that the proposed method is feasible and it can be used in practice for long-span cable-supported bridges with SHM system.

关键词: structural health monitoring (SHM)     bridge rating method     fuzzy based analytic hierarchy approach     criticality and vulnerability rating     Tsing Ma Bridge    

Practical evaluation for water utilities in China by using analytic hierarchy process

Hong CHEN,Feng XIAO,Zhe BI,Ping XIAO,Dongsheng WANG,Ming YANG

《环境科学与工程前沿(英文)》 2015年 第9卷 第1期   页码 131-137 doi: 10.1007/s11783-014-0718-1

摘要: The risk of water utilities would include the water quality failure and the water quantity failure, from the source to the tap, including the catchment, treatment, distribution and the customer plumbing system. In this paper, we proposed a practical evaluation method based on the analytic hierarchy process (AHP). The hierarchical structure of the water utilities was established in terms of the fault event analysis from the past failure accidents. The severity of criteria was preset by the experts and the probability of criteria was determined by a modified CUWA-TSM sheet with the consideration of the actual situations of the supply system. The evaluation model was successfully performed by a case study. Although, the method in this paper may not be as good as the framework of WSPs, it has a great advantage compared to WSPs and TSM. The risk management can be applied through specific software packages with a user-friendly interface, which means it is easier to implement. In addition, it can point out the critical control points (CCPs) for the decision-makers. So we believe this method will improve and play a more and more active role in the development of the risk management in China water works.

关键词: analytic hierarchy process (AHP)     risk management     water quality failure     water quantity failure    

广域电磁和拟流场精细探测技术——以井工一矿水害探测为例 Article

何继善

《工程(英文)》 2018年 第4卷 第5期   页码 667-675 doi: 10.1016/j.eng.2018.09.006

摘要: 以往的单一勘探方法,如地震、直流电、音频大地电磁、可控源音频大地电磁、瞬变电磁等,均未能探明老采空区范围和水害赋存情况。为了解决这个难题,联合采用广域电磁和井- 地拟流场的三位一体立体式探测技术,并利用三维反演电阻率资料精准获取富水区域和采空区的位置,确定了不同层位水的连通性,为井工一矿的安全生产提供了可靠的技术保障

关键词: 广域电磁     拟流场     采空区     富水性     精细探测    

海上风电场机组分体安装及其应用

孙广喜,黄亚新

《中国工程科学》 2010年 第12卷 第11期   页码 53-59

摘要:

对世界各国海上风电场的安装方法进行了归纳分类,分析风机海上分体安装的工艺流程、装配基地设置的必要性和设置原则,归纳出8种典型的陆上组装方案及主要风机组件的装配工艺;提出一种海上风机潜水船坐底安装:在潜水船上配置起重机构成风机潜水安装船,作业时潜水安装船潜入海底并坐落于海床,进行风机部件的吊装,该安装适用于近海风电场建设;最后介绍了潜水船安装在江苏响水近海风电场试验机组项目中的应用

关键词: 海上风电场     陆上组装     分体安装     应用    

城市富水砂卵石地层大断面隧道浅埋暗挖工研究

唐国荣,刘招伟,李建华

《中国工程科学》 2010年 第12卷 第12期   页码 98-102

摘要:

针对北京富水砂卵石地层大断面隧道地层稳定性差、工程周边环境复杂、对沉降控制要求高等诸多难题,在大断面隧道中采用CRD、洞桩进行施工,有效控制了工程结构

关键词: 砂卵石地层     大断面     CRD     洞桩     隧道施工    

改进的阈值在毫米波目标辐射信号去噪中的应用

范庆辉,李兴国

《中国工程科学》 2008年 第10卷 第7期   页码 153-157

摘要: justify;">根据毫米波目标辐射信号小波变换的特征,使用非负小波系数作信号的小波系数,对于确定的阈值,令小于阈值的小波系数为零,大于阈值的小波系数减去常数a ,利用信号的方差函数推导了a 的取值方

关键词: 毫米波目标辐射信号     硬阈值     软阈值     均方差     贝叶斯阈值    

料浆磷铵生产工艺发展与五大磷肥工程改造

钟本和

《中国工程科学》 2004年 第6卷 第6期   页码 22-25

摘要:

针对引进磷酸浓缩工艺生产磷铵的技术不适应我国矿产资源具体情况的难题,开发了料浆磷铵生产工艺技术,已在21个省区布点推广建设了87套装置,形成生产能力279×104法磷铵与引进的传统磷酸浓缩工艺联产的成功,为五大磷肥工程的改造提供了一条新的途径。

关键词: 磷肥     磷铵     料浆磷铵    

含空洞岩体微震定位的快速行进——性能分析与工程应用 Article

蒋若辰, 戴峰, 刘燚, 李昂

《工程(英文)》 2021年 第7卷 第7期   页码 1023-1034 doi: 10.1016/j.eng.2020.10.019

摘要: 为实现含空洞复杂岩体中的高精度微震事件定位,本研究基于二阶差分形式的快速行进,开发了微震事件定位方法。此外,基于二阶快速行进的计算结果,微震破裂源到微震传感器的传播路径,可通过应用线性插值与龙格-库塔获得。所用方法的合理性在一系列的数值仿真实验中得到了验证。

关键词: 快速行进     微震事件定位     含空洞复杂岩体     龙格-库塔    

Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

《结构与土木工程前沿(英文)》 2010年 第4卷 第2期   页码 252-257 doi: 10.1007/s11709-010-0017-2

摘要: Pile-type selection is a very important stage of foundation design, and there are many field factors influencing the decision of pile-type selection. Since there is a limitation of traditional “major factors method” to satisfy the requirement of modern foundation construction, this study presents an efficient approach, in which analytic hierarchy process (AHP) is employed. AHP is a multiple criteria decision-making tool that has been applied in many fields related to the decision-making, e.g., in the field of economics, marketing, sociology, etc. However, it is rarely reported that AHP is applied in the field of civil engineering for decision making. In this study, AHP combined with fuzzy synthetic evaluation method is employed to select the type of pile used as the foundation of a residential building in Fuzhou, Fujian Province, China. The results show that fuzzy AHP approach is an easy and efficient way for pile-type selection.

关键词: pile type     fuzzy synthetic evaluation     analytic hierarchy process (AHP)     optimal selection    

有限元极限分析发展及其在岩土工程中的应用

郑颖人,赵尚毅,邓楚键,刘明维,唐晓松,张黎明

《中国工程科学》 2006年 第8卷 第12期   页码 39-61

摘要:

有限元极限分析兼有数值分析与经典极限分析两者的优点,特别适用于岩土工程的分析与设计。20世纪初,国内岩土工程界应用国际上通用程序,大力发展有限元极限分析并拓宽其在岩土工程中的应用。

关键词: 极限分析     有限元     岩土工程     边坡     地基     隧道    

过渡区提取方法综述

刘锁兰,杨静宇

《中国工程科学》 2007年 第9卷 第9期   页码 89-96

摘要:

图像分割是图像理论发展的瓶颈, 过渡区是指图像中介于目标和背景之间的 特殊区域,借助于过渡区的确定进行图像 分割。主要介绍了过渡区提取的两大类方法 :基于梯度的方法和基于非梯度的方法, 并对提取效果以及存在的问题做了简要分析。

关键词: 过渡区     提取     图像分割     梯度     非梯度    

标题 作者 时间 类型 操作

堆石坝坝型优选模型及评价方法研究

陈永兴,常昊天,鲁文妍,任炳昱

期刊论文

虚拟企业敏捷性度量的AFHW方法

王硕,唐小我

期刊论文

Comprehensive evaluation of heavy metal contamination of sediment in Lake Dianchi by using modified AHP

ZHANG Yan, GAO Xiang, ZHONG Zhenyu, PENG Buzhuo, DENG Xihai

期刊论文

Evaluating and structuring indicators for wetland assessment

Xuehua LIU, Yan SUN,

期刊论文

SHM-based F-AHP bridge rating system with application to Tsing Ma Bridge

Qi LI, You-lin XU, Yue ZHENG, An-xin GUO, Kai-yuen WONG, Yong XIA

期刊论文

Practical evaluation for water utilities in China by using analytic hierarchy process

Hong CHEN,Feng XIAO,Zhe BI,Ping XIAO,Dongsheng WANG,Ming YANG

期刊论文

广域电磁和拟流场精细探测技术——以井工一矿水害探测为例

何继善

期刊论文

海上风电场机组分体安装及其应用

孙广喜,黄亚新

期刊论文

城市富水砂卵石地层大断面隧道浅埋暗挖工研究

唐国荣,刘招伟,李建华

期刊论文

改进的阈值在毫米波目标辐射信号去噪中的应用

范庆辉,李兴国

期刊论文

料浆磷铵生产工艺发展与五大磷肥工程改造

钟本和

期刊论文

含空洞岩体微震定位的快速行进——性能分析与工程应用

蒋若辰, 戴峰, 刘燚, 李昂

期刊论文

Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

期刊论文

有限元极限分析发展及其在岩土工程中的应用

郑颖人,赵尚毅,邓楚键,刘明维,唐晓松,张黎明

期刊论文

过渡区提取方法综述

刘锁兰,杨静宇

期刊论文