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High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general connectivitybased hierarchy with discrete correction of atomization energy

《化学科学与工程前沿(英文)》 2022年 第16卷 第12期   页码 1743-1750 doi: 10.1007/s11705-022-2184-9

摘要: The standard enthalpy of formation is an important predictor of the reaction heat of a chemical reaction. In this work, a high-precision method was developed to calculate accurate standard enthalpies of formation for polycyclic aromatic hydrocarbons based on the general connectivity based hierarchy (CBH) with the discrete correction of atomization energy. Through a comparison with available experimental findings and other high-precision computational results, it was found that the present method can give a good description of enthalpy of formation for polycyclic aromatic hydrocarbons. Since CBH schemes can broaden the scope of application, this method can be used to investigate the energetic properties of larger polycyclic aromatic hydrocarbons to achieve a high-precision calculation at the CCSD(T)/CBS level. In addition, the energetic properties of CBH fragments can be accurately calculated and integrated into a database for future use, which will increase computational efficiency. We hope this work can give new insights into the energetic properties of larger systems.

关键词: standard enthalpy of formation     polycyclic aromatic hydrocarbons     connectivity based hierarchy     high-precision calculation    

Study on affecting factors of collaborative product development based on collaboration hierarchy model

ZHANG Xiaodong, LI Yingzi, ZHANG Zhiqiang

《机械工程前沿(英文)》 2007年 第2卷 第2期   页码 210-213 doi: 10.1007/s11465-007-0036-4

摘要: Aiming at the levels of collaborative degree in web-based product development, a collaboration hierarchy model of this product development is developed in this paper. Based on the model, the affecting factors on collaboration levels are analyzed systematically from many aspects, such as technology, organization and business. A gap analysis method is studied in detail, and is applied in a real project. The application shows that it can solve the diverse problems of collaborative product development effectively, and help enterprises find out the critical factors that affect the collaboration.

关键词: development     web-based     business     collaborative     collaboration hierarchy    

Hierarchical methodological framework to improve Policy Environmental Assessment: Based on policy layer

Yinglie ZHOU, Cunkuan BAO,

《环境科学与工程前沿(英文)》 2010年 第4卷 第1期   页码 82-90 doi: 10.1007/s11783-010-0004-9

摘要: This study explores the current implementation challenges of the Policy Environmental Assessment (PEA), including the implementation of a far richer, more diverse (at macro level), and better understanding of PEA and integration with decision making. The results contribute to the analysis of PEA through different hierarchies of assessment. Stemming from the theory and practice of policy, a concept of PEA hierarchies is proposed including the uppermost PEA, upper-lower PEA, and lowermost PEA. Afterward, the differences of the three hierarchies are interpreted, in terms of aims, principles, processes, and methods. The evaluation of the policy environmental impacts from different lens helps solve the complexities of policies and identify opportunities for improvement of PEA.

关键词: Policy Environmental Assessment (PEA)     policy hierarchy     PEA hierarchy     methodological framework    

Influencing factors and control measures of excavation on adjacent bridge foundation based on analytichierarchy process and finite element method

Shuangxi FENG, Huayang LEI, Yongfeng WAN, Haiyan JIN, Jun HAN

《结构与土木工程前沿(英文)》 2021年 第15卷 第2期   页码 461-477 doi: 10.1007/s11709-021-0705-0

摘要: Many uncertain factors in the excavation process may lead to excessive lateral displacement or over-limited internal force of the piles, as well as inordinate settlement of soil surrounding the existing bridge foundation. Safety control is pivotal to ensuring the safety of adjacent structures. In this paper, an innovative method is proposed that combines an analytic hierarchy process (AHP) with a finite element method (FEM) to reveal the potential impact risk of uncertain factors on the surrounding environment. The AHP was adopted to determine key influencing factors based on the weight of each influencing factor. The FEM was used to quantify the impact of the key influencing factors on the surrounding environment. In terms of the AHP, the index system of uncertain factors was established based on an engineering investigation. A matrix comparing the lower index layer to the upper index layer, and the weight of each influencing factor, were calculated. It was found that the excavation depth and the distance between the foundation pit and the bridge foundation were fundamental factors. For the FEM, the FE baseline model was calibrated based on the case of no bridge surrounding the foundation pit. The consistency between the monitoring data and the numerical simulation data for a ground settlement was analyzed. FE simulations were then conducted to quantitatively analyze the degree of influence of the key influencing factors on the bridge foundation. Furthermore, the lateral displacement of the bridge pile foundation, the internal force of the piles, and the settlement of the soil surrounding the pile foundation were emphatically analyzed. The most hazardous construction condition was also determined. Finally, two safety control measures for increasing the numbers of support levels and the rooted depths of the enclosure structure were suggested. A novel method for combining AHP with FEM can be used to determine the key influencing aspects among many uncertain factors during a construction, which can provide some beneficial references for engineering design and construction.

关键词: deep foundation pit excavation     adjacent bridge foundation     influencing factors     analytic hierarchy process     finite element    

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    

“一带一路”电力互联互通浅析

刘哲,高艺,王玉生,李隽,黄维和

《中国工程科学》 2019年 第21卷 第4期   页码 76-81 doi: 10.15302/J-SSCAE-2019.04.007

摘要:

“一带一路”建设不断向纵深发展,在基础设施、经贸投资和绿色金融等多领域取得丰硕成果。能源电力是“一带一路”国际合作的重要领域。为更好地认识开展沿线国家能源电力国际合作的重要性,本文从环境和成本两个方面阐述了沿线国家清洁能源开发的资源优势,诠释了各国间电力互联互通的潜力。通过思维创新、模式变革、技术革新以及利益共享四个维度,分析了技术革命对“一带一路”电力互联互通的支撑作用。研究表明沿线国家能源电力需求呈快速增长趋势,清洁能源资源分布广泛、优势明显,为电力互联互通提供了必要条件。在国际能源电力合作中,应充分发挥各国的比较优势,以新能源、电网、信息等关键技术的变革支撑“一带一路”电力互联互通。

关键词: “一带一路”     能源互联网     清洁能源     电力互联互通     能源转型    

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    

Multi-UAV cooperative target tracking with bounded noise for connectivity preservation

Rui Zhou, Yu Feng, Bin Di, Jiang Zhao, Yan Hu,jzhao@buaa.edu.cn

《信息与电子工程前沿(英文)》 2020年 第21卷 第10期   页码 1413-1534 doi: 10.1631/FITEE.1900617

摘要: We investigate cooperative target tracking of multiple unmanned aerial vehicles (UAVs) with a limited communication range. This is an integration of UAV motion control, target state estimation, and network topology control. We first present the communication topology and basic notations for , and introduce the distributed . Then, convergence and boundedness of the estimation errors using the filter are analyzed, and potential functions are proposed for communication link maintenance and collision avoidance. By taking stable target tracking into account, a distributed potential function based UAV motion controller is discussed. Since only the estimation of the target state rather than the state itself is available for UAV motion control and UAV motion can also affect the accuracy of state estimation, it is clear that the UAV motion control and target state estimation are coupled. Finally, the stability and convergence properties of the coupled system under are analyzed in detail and demonstrated by simulations.

面向任务信息的层次化存储DPM策略

黄少珉,戚隆宁,杨军,胡晨

《中国工程科学》 2010年 第12卷 第2期   页码 83-89

摘要: 在此基础上提出基于任务信息(task information based,TIB)的层次化存储DPM策略。

关键词: 数据缓冲区     任务信息     DPM     预读策略    

基于项目的路面养护可持续性评价工具  Article

Yibo Zhang, J.P. Mohsen

《工程(英文)》 2018年 第4卷 第2期   页码 200-208 doi: 10.1016/j.eng.2018.03.001

摘要:

路面需要养护,以防止其过度损坏,或使其恢复性能,然而在许多情况下,路面养护的重要性并没有得到足够的重视,它经常会被忽视或被作为低优先级处理。目前大多数的养护活动都存在预算问题,且只专注于清理损坏的路段。延期的路面养护会对环境和社会产生影响,因此可能会影响与养护相关的成本。可持续性评级工具是列举、解释和评估此类影响的好方法。目前已经为路面设计了多种评级工具,但是,路面养护与新建、扩建、改造路面等工程相比有不同的特点。本研究回顾了9 种路面可持续性评级工具,但这些工具没有一个可以完全描述养护特征,或者可以直接用于评估养护项目。因而,一个新型的用于路面养护的可持续性评级工具开始发展,这个新的工具可以用来评估单独的养护项目,并且可以提高公众对于路面养护重要性的认识。本文对其细节进行了描述,并通过示例展示了其评估过程和结果。

关键词: 可持续性     路面养护     PSIM     评级工具     层次分析法    

Comprehensive health condition assessment on partial sewers in a southern Chinese city based on fuzzy

Lili GAN, Jiane ZUO, Yajiao WANG, Thong Soon LOW, Kaijun WANG

《环境科学与工程前沿(英文)》 2014年 第8卷 第1期   页码 144-150 doi: 10.1007/s11783-013-0554-8

摘要: A self-developed sewer health assessment system using the fuzzy comprehensive evaluation and analytical hierarchy process was applied to give a comprehensive health condition evaluation on part of the local sewers in a southern Chinese city based on the sewer video data collected by a sewer inspection closed circuit television (CCTV) robot. Aside from the overall condition evaluation, the structure, function, and stability status of the sewer were also analyzed using the method. A comprehensive index was proposed to give the overall health condition of pipes with different defects, and , , and were used to quantify the defects affecting the tightness, stability, and function of the pipe, respectively. Results show that 48% of the inspected pipes were in good condition (0< <0.25), and about 33% of the sewer pipes analyzed were categorized to be at severe or urgent condition levels ( >0.5), although most of the pipes were installed only within five years. Frequent sedimentation affects the function of the sewer, and deformation and joint damage affect the structure of the sewer.

关键词: sewer     health condition assessment     analytical hierarchy process     fuzzy comprehensive evaluation     fuzzy mathematic method    

基于连通可靠度约束的分簇算法研究

于继明,孙亚民,雷艳静,杨余旺

《中国工程科学》 2010年 第12卷 第9期   页码 73-77

摘要:

在研究了一些分簇算法基础上,提出基于连通可靠度约束的、适合大规模随机部署的快速成簇算法。仿真表明基于连通可靠度约束的快速成簇算法得到的分簇覆盖面广、簇头分布合理、稳定性强,与最小ID分簇及优化的最大连接数分簇算法相比,得到簇头数量少,分簇更合理,各成员节点与簇头的连通可靠度好,能保证网络的稳定性与健壮性,大大减少重构开销带来的通信代价,有利于均衡网络能量消耗,延长网络生命周期。

关键词: 无线自组传感器网     连通可靠度     分簇算法    

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    

基于网格化管理的农产品质量安全追溯系统的设计与实现

胡云锋,董昱,孙九林

《中国工程科学》 2018年 第20卷 第2期   页码 63-71 doi: 10.15302/J-SSCAE-2018.02.010

摘要:

农产品质量安全追溯是通过标识和查询农产品过程信息、落实农产品质量安全的重要手段。农产品质量安全追溯体系的建设,对于保障“从农田到餐桌”的食品安全和我国农业现代化都具有重要意义。为此,笔者以中宁县枸杞生产为案例,采用了空间分析、数据网格化、云计算、移动互联网等一系列技术和方法,构建了包括宽度、深度和精确度三个维度的食品可追溯体系,突破了定位与地图显示、数据网格化、预警服务与推送、二维码关联与追溯等多项关键技术,形成了能够覆盖农产品生产全流程的农产品质量安全追溯系统。在系统建设与应用示范过程中,该系统在农作物质量安全追溯上可以基本满足管理人员、生产人员和消费者的需求,在未来该系统可以应用到全部农产品的质量安全追溯体系中,可继续研究并建立国家层面统一的、标准化的追溯标准。

关键词: 网格化     农产品     质量安全     可追溯体系     追溯系统    

先进天线赋能无线互联

陆贵文, 段宝岩

《工程(英文)》 2022年 第11卷 第4期   页码 1-2 doi: 10.1016/j.eng.2022.03.003

标题 作者 时间 类型 操作

High-precision standard enthalpy of formation for polycyclic aromatic hydrocarbons predicting from general connectivitybased hierarchy with discrete correction of atomization energy

期刊论文

Study on affecting factors of collaborative product development based on collaboration hierarchy model

ZHANG Xiaodong, LI Yingzi, ZHANG Zhiqiang

期刊论文

Hierarchical methodological framework to improve Policy Environmental Assessment: Based on policy layer

Yinglie ZHOU, Cunkuan BAO,

期刊论文

Influencing factors and control measures of excavation on adjacent bridge foundation based on analytichierarchy process and finite element method

Shuangxi FENG, Huayang LEI, Yongfeng WAN, Haiyan JIN, Jun HAN

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

“一带一路”电力互联互通浅析

刘哲,高艺,王玉生,李隽,黄维和

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

Multi-UAV cooperative target tracking with bounded noise for connectivity preservation

Rui Zhou, Yu Feng, Bin Di, Jiang Zhao, Yan Hu,jzhao@buaa.edu.cn

期刊论文

面向任务信息的层次化存储DPM策略

黄少珉,戚隆宁,杨军,胡晨

期刊论文

基于项目的路面养护可持续性评价工具 

Yibo Zhang, J.P. Mohsen

期刊论文

Comprehensive health condition assessment on partial sewers in a southern Chinese city based on fuzzy

Lili GAN, Jiane ZUO, Yajiao WANG, Thong Soon LOW, Kaijun WANG

期刊论文

基于连通可靠度约束的分簇算法研究

于继明,孙亚民,雷艳静,杨余旺

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

基于网格化管理的农产品质量安全追溯系统的设计与实现

胡云锋,董昱,孙九林

期刊论文

先进天线赋能无线互联

陆贵文, 段宝岩

期刊论文