检索结果-南通市图书馆

Geo-Spatial Information Science 2020年第3期23卷 237-247,I0004页

作者： Jing Geng Wenxia Gan jinying xu Ruqin Yang Shuliang Wang School of Computer Science and Technology Beijing Institute of TechnologyBeijingChina Beijing Institute of Technology BeijingChina School of Civil Engineering and Architecture Wuhan Institute of TechnologyWuhanChina Wuhan Natural Resources and Planning Information Center WuhanChina

Radiometric normalization,as an essential step for multi-source and multi-temporal data processing,has received critical *** Radiometric Normalization(RRN)method has been primarily used for eliminating the radiometric *** radiometric trans-forming relation between the subject image and the reference image is an essential aspect of *** at accurate radiometric transforming relation modeling,the learning-based nonlinear regression method,Support Vector machine Regression(SVR)is used for fitting the complicated radiometric transforming relation for the coarse-resolution data-referenced *** evaluate the effectiveness of the proposed method,a series of experiments are performed,including two synthetic data experiments and one real data *** the proposed method is compared with other methods that use linear regression,Artificial Neural Network(ANN)or Random Forest(RF)for radiometric transforming relation *** results show that the proposed method performs well on fitting the radiometric transforming relation and could enhance the RRN performance.

关键词： Support Vector machine Regression(SVR) non-linear radiometric transforming relation Relative Radiometric Normalization(RRN) multi-source data

A COST-BENEFIT ANALYSIS OF GREEN BUILDINGS WITH RESPECT TO CONSTRUCTION WASTE MINIMIZATION USING BIG DATA IN HONG KONG

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Journal of Green Building 2018年第4期13卷 61-76页

作者： Xi Chen Weisheng Lu Fan xue jinying xu PhD Candidate Department of Rcal Estate and ConstructionFaculty of ArchitcturThe University of Hong KongPolkfulamHong KongChina Asociate Professor Department of Real Estate and ConstructionFaculty of ArchitctureThe University of Hong KongPolkfulamHong KongChina Rescarch Asistant Prosr Department of Real Estate and ConstructionFaulty of ArchitectureThe University of Hong KongPokfulamHong KongChina

It is generally accepted that the extra construction costs involved in the construction of green buildings will result in benefits including lower operation costs,higher sale/rental prices,and better sustainability ***,there has been little recognition of construction waste minimization(CWM)as one of the important benefits of sustainability performance as designated in green building.is paper aims to provide a better understanding of the cost benefit of green buildings with respect to CWM by using big data in the context of Hong *** study is innovative in that it conducts a cost-benefit analysis specifically on CWM of green buildings by mining large-volume datasets.A surprise finding is that Hong Kong’s green building rating system(GBRS),*** BEAM Plus,has a negligible effect on CWM,while it generally increases construction costs by approximately 24%.Hence,the increased construction cost of green buildings cannot be offset by CWM if corresponding items in the BEAM Plus are not properly incentivized.is paper demonstrates the necessity of emphasizing CWM-related items in GBRSs and of taking appropriate measures to deal with *** also provides better decision-support information on the increased construction costs and the attainable benefits of green building that developers may wish to consider when initiating a green building project.

关键词： green building cost-benefit analysis construction waste minimization big data Hong Kong region

Blockchain-based smart contract for smart payment in construction: A focus on the payment freezing and disbursement cycle

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Frontiers of Engineering Management 2022年第2期9卷 177-195页

作者： Liupengfei WU Weisheng LU jinying xu Department of Real Estate and Construction University of Hong KongHong KongChina

Late payment,and indeed no payment,is a rampant and chronic problem that has plagued the global construction industry for too *** development in blockchain technology,particularly its smart contract,seems to provide a new opportunity to improve this old ***,this opportunity is largely *** study aims to develop a blockchain-based smart contract(BBSC)system for smart payment in the construction industry by focusing on the fundamental cycle of payment freezing(sometimes also synonymously called payment guarantees)and disbursement ***,a BBSC framework,containing three processes of(a)initiation and configuration,(b)payment freezing,and(c)disbursement application,is ***,based on the framework,the system architecture of the BBSC system,containing three layers of(1)Infrastructure as a Service(IaaS),(2)Blockchain as a Service(BaaS),and(3)Software as a Service(SaaS)is proposed and ***,based on the system architecture,a BBSC prototype system is developed using a real-life modular construction project as a case *** was found that the prototype system can improve the certainty and efficiency of the progress payment,thereby enabling smart payment in construction *** advocating radical changes(e.g.,the contractual relationships or the intermediate role of banks in modem construction projects),the prototype can be developed into a real-life BBSC system that can work compatibly with current advancements in the *** works are recommended to fine-tune the findings and translate and implement them in real-life applications.

关键词： blockchain construction project smart contract smart payment payment dispute

Digital Twins for Engineering Asset Management:Synthesis,Analytical Framework,and Future Directions

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Engineering 2024年第10期41卷 261-275页

作者： Yongkui Li Qinyue Wang Xiyu Pan Jian Zuo jinying xu Yilong Han School of Economics and Management Tongji UniversityShanghai 200092China School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlantaGA 30332USA School of Architecture and Civil Engineering The University of AdelaideAdelaideSA 5005Australia Department of Engineering University of CambridgeCambridge CB30FAUK

Effective engineering asset management(EAM)is critical to economic development and improving livability in society,but its complexity often impedes optimal asset *** twins(DTs)could revolutionize the EAM paradigm by bidirectionally linking the physical and digital worlds in real *** is great industrial and academic interest in DTs for ***,previous review studies have predominately focused on technical aspects using limited life-cycle perspectives,failing to holistically synthesize DTs for EAM from the managerial point of *** on a systematic literature review,we introduce an analytical framework for describing DTs for EAM,which encompasses three levels:DT 1.0 for technical EAM,DT 2.0 for technical-human EAM,and DT 3.0 for technical-environmental *** this framework,we identify what is known,what is unknown,and future directions at each *** 1.0 addresses issues of asset quality,progress,and cost management,generating technical *** lacks multi-objective self-adaptive EAM,however,and suffers from high application *** is imperative to enable closed-loop EAM in order to provide various functional services with affordable DT *** 2.0 accommodates issues of human-machine symbiosis,safety,and flexibility management,generating managerial value beyond the technical performance improvement of engineering ***,DT 2.0 currently lacks the automation and security of human-machine interactions and the managerial value related to humans is not prominent *** research needs to align technical and managerial value with highly automated and secure DT *** 3.0 covers issues of participatory governance,organization management,sustainable development,and resilience enhancement,generating macro social *** it suffers from organizational fragmentation and can only address limited social governance *** research opportunities exist to coordinate different ***,future research

关键词： Engineering asset management Digital twin Socio-technical theory Structureprocessoutcome Literature review

Multifrequency superscattering pattern shaping

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Chinese Optics Letters 2021年第12期19卷 130-136页

作者： Yao Qin jinying xu Yineng Liu Huanyang Chen Institute of Electromagnetics and Acoustics and School of Electronic Science and Engineering Xiamen UniversityXiamen 361005China Department of Physics Fuzhou UniversityFuzhou 350108China

Multifrequency superscattering is a phenomenon in which the scattering cross section from a subwavelength object simultaneously exceeds the single-channel limit at multiple frequency ***,we achieve simultaneously,within a graphene-coated subwavelength structure,multifrequency superscattering and superscattering shaping with different engineered scattering *** is shown that multimode degenerate resonances at multiple frequency regimes appearing in a graphene composite structure due to the peculiar dispersion can be employed to resonantly overlap electric and magnetic multipoles of various orders,and,as a result,effective multifrequency superscattering with different engineered angular patterns can be ***,the phenomena of multifrequency superscattering have a high tolerance to material losses and some structural *** work should anticipate extensive applications ranging from emission enhancing,energy harvesting,and antenna design with improved sensitivity and accuracy due to multifrequency operation.

关键词： superscattering pattern shaping subwavelength structure graphene plasmon polariton

Phytoplankton functional groups in Poyang Lake:succession and driving factors

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Journal of Oceanology and Limnology 2024年第6期42卷 1764-1776页

作者： Jinfu LIU Haoyue ZOU Feng DENG Yutian LIU Wei LI jinying xu Songping LIU Qiang WU Xiaoliang ZHANG Fagen WENG Qi HUANG Hailin YOU Yuwei CHEN Jiangxi Key Laboratory of Hydrology-Water Resources and Water Environment Nanchang Institute of TechnologyNanchang 330099China Key Laboratory of Poyang Lake Environment and Resource Utilization Ministry of Educationand School of ResourcesEnvironmental&Chemical EngineeringNanchang UniversityNanchang 330031China Lushan Botanical Garden Jiangxi Province and Chinese Academy of SciencesJiujiang 332900China China Railway Water Conservancy&Hydropower Planning and Design Group Co. Ltd.Nanchang 330029China Key Laboratory of Poyang Lake Wetland and Watershed Research Ministry of EducationJiangxi Normal UniversityNanchang 330022China Institute of Watershed Ecology Jiangxi Academy of SciencesNanchang 330096China

Phytoplankton functional groups have gained increasing attention in recent *** understand the composition of phytoplankton functional groups in Poyang Lake and their drivers,field investigations were conducted over three years:2013,2014,and *** were dominated by diatoms,contributing from 20.19%to 57.57%of the total biomass,followed by cyanobacteria,9.81%-39.98%.Microcystis *** Anabaena *** the dominant species among ***-six functional groups were identified among 72 genera or species,and fiver groups(P,B,MP,H1,and G)were categorized *** of dominant groups except H1 were tolerate highly fluctuating mixing intensities and showed a typical monthly succession *** temperature,water level,and nutrients are key drivers for the variation of phytoplankton communities at taxonomic and functional *** of redundancy and variation partitioning analyses showed that environmental variables might explain functional groups better than taxonomic communities,implying that the functional groups were more advantageous in showing the effects of environmental conditions than taxonomic *** conditions have a crucial influence on phytoplankton assemblage dynamics in highly variable water regime lakes,but not in the largest *** functional groups method is suitable for identifying the spatial and seasonal characteristics of aquatic environments that significantly affected by water regimes.

关键词： cyanobacteria bloom light availability nutrients dilution water level Poyang Lake

Photonic crystal slabs with maximal chiroptical response empowered by bound states in the continuum

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Photonics Research 2023年第11期11卷 1919-1933页

作者： QILIN DUAN YALI ZENG YUHANG YIN jinying xu ZHINING CHEN ZHANLEI HAO HUANYANG CHEN YINENG LIU Institute of Electromagnetics and Acoustics and Department of Physics Xiamen UniversityXiamen 361005China Department of Electrical and Computer Engineering National University of SingaporeSingapore 117583Singapore Department of Physics Fuzhou UniversityFuzhou 350108China

To enhance the strength of chiral light–matter interaction for practical applications,the chirality and quality factors(Q-factors)of current methods need to be strengthened ***,we propose a design of photonic crystal slabs(Ph Cs)supporting chiral bound states in the continuum(BICs)of transverse electric(TE)and transverse magnetic(TM)modes,exhibiting maximal chiroptical responses with high Q-factors and near-unity circular dichroism(CD=0.98).Different from the past,the Ph Cs we employed only have reduced in-plane symmetry and can support simultaneously chiral quasi-BICs(q-BICs)of TE and TM mode with two-dimensional ultra-strong external and internal *** on the temporal coupled-mode theory,two analytical expressions of CD of chiral q-BICs response are revealed,which are consistent with the simulation ***,we elucidate these results within the charge-current multipole expansion framework and demonstrate that the co-excitation of higher-order multipole electric/magnetic modes is responsible for near-perfect *** results may provide more flexible opportunities for various applications requiring high Q-factors and chirality control,such as chiral lasing,chiral sensing,and enantiomer separation.

关键词： chiral maximal crystal

基于Agent的工作流管理系统中KQML的扩充

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华中科技大学学报（自然科学版） 2005年第z1期33卷 375-378页

作者：徐锦英徐锡山季磊国防科学技术大学计算机学院湖南长沙410073

应用知识查询与处理语言(KQML)来实现基于Agent的工作流管理系统中Agent之间的通信.介绍KQML相关概念,分析现有的KQML行为原语在基于Agent的工作流管理系统应用中的不足.针对任务控制的行为原语过于单一、交互过于简单等问题,扩充行为原... 详细信息

应用知识查询与处理语言(KQML)来实现基于Agent的工作流管理系统中Agent之间的通信.介绍KQML相关概念,分析现有的KQML行为原语在基于Agent的工作流管理系统应用中的不足.针对任务控制的行为原语过于单一、交互过于简单等问题,扩充行为原语,给出6条扩充原语的定义和语义描述:request,accept,refuse,enable,discard,affirm.提供一个工作流执行过程中扩展KQML的具体应用.

关键词：知识查询与处理语言工作流管理系统 Agent 行为原语

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制度变迁视角下重大基础设施投融资模式演进

同济大学学报（自然科学版） 2016年第8期44卷 1272-1279页

作者：乐云徐进英白居同济大学经济与管理学院上海200092

针对重大基础设施投融资制度变迁及模式演进问题,在分析相关制度发展阶段的基础上,应用演化博弈理论,构建政府-市场二元重大基础设施投融资演化博弈模型.结合系统仿真技术,分析了政府决策水平、市场投资意愿、市场投资额度、重大基础设... 详细信息

针对重大基础设施投融资制度变迁及模式演进问题,在分析相关制度发展阶段的基础上,应用演化博弈理论,构建政府-市场二元重大基础设施投融资演化博弈模型.结合系统仿真技术,分析了政府决策水平、市场投资意愿、市场投资额度、重大基础设施投资收益率和风险损失的变化,对政府、市场的演化稳定策略和双方的混合策略的影响.研究发现,政府的政策制度和决策水平与市场投资意愿之间存在反馈作用,且它们与市场投资能力、重大基础设施投资收益和风险等因素一起影响投融资模式的演进,演进路径的决定性因素是制度变迁路径的选择.

关键词：重大基础设施投融资模式演进演化博弈仿真

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股份合作制与加速我国农业现代化进程

农业现代化研究 1999年第3期20卷 144-147页

作者：许锦英山东社会科学院农经所

从基本国情和现代化农业的要求出发，分析阐述了股份合作制的产权制度特性和由此产生的效果，对于在稳定农村家庭承包制的基础上，迅速提高农业生产力，从而根本解决我国农业生产的基本矛盾；对于改造传统农业，逐步实现现代化农业的管... 详细信息

从基本国情和现代化农业的要求出发，分析阐述了股份合作制的产权制度特性和由此产生的效果，对于在稳定农村家庭承包制的基础上，迅速提高农业生产力，从而根本解决我国农业生产的基本矛盾；对于改造传统农业，逐步实现现代化农业的管理方式；对于加速农村工业化和小城镇建设，创造现代化农业的良好经济社会环境等方面所具有的特殊功能，以论证股份合作制是加速我国农业现代化进程的理性选择。

关键词：股份合作制农业现代化产权