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设计 19

三峡工程 10

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增材制造 8

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机器学习 5

材料设计 5

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How does the improved DB mode degrade the complex integrity of infrastructure mega-projects?

Jinwen ZHANG, Yumin QIU

《工程管理前沿(英文)》 2018年 第5卷 第1期   页码 40-51 doi: 10.15302/J-FEM-2018083

摘要: Complex integrity is one of the main characteristics of infrastructure mega-projects (IMPs). Cost, technology, risk, duration, environmental impact, and other uncertain complexities are interrelated and constitute a challenging and complex management problem. At present, there is no unified understanding of or solutions to these complex integrity problems. This study analyzes the complex integrity of the island-tunnel subproject of the Hong Kong-Zhuhai-Macao Bridge (HZMB) project and proposes an improved design-build (DB) mode in which the owner provides a preliminary design and has the right to form and manage consortium. This improved DB mode creatively degrades the special complexities that arise from multiple dimensions. On this basis, it is an efficacious way to grasp the main contradictions, integrate the effective resources, and degrade the complex integrity in multiple dimensions and at multiple levels so as to effectively deal with the complexity management of IMPs.

关键词: Hong Kong-Zhuhai-Macao Bridge project     island-tunnel subproject     complex integrity     complexity degradation     the general contracting mode of design-build     the design-build consortium    

General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

《结构与土木工程前沿(英文)》 2009年 第3卷 第1期   页码 50-56 doi: 10.1007/s11709-009-0004-7

摘要: Based on a detailed illustration for bridge life cycle design which comprises the processes of service life design, aesthetics design, performance design, environmental and ecological design, inspection, maintenance and repair design as well as cost analysis, this paper presented a general framework for bridge life cycle design comprising three design phases and six design processes.

关键词: bridge whole life design     design phase     design process     general framework    

Performance of seven highway construction contracting methods analyzed by project size

Yuanxin ZHANG, Abdol CHINI, R. Edward MINCHIN Jr., Lourdes PTSCHELINZEW, Dev SHAH

《工程管理前沿(英文)》 2018年 第5卷 第2期   页码 240-250 doi: 10.15302/J-FEM-2018040

摘要: The conventional Design-Bid-Build (DBB) construction contracting method has had various drawbacks exposed in highway construction practice, including lack of communication, inefficient design, antagonizing relationships, and increased disputes. To mitigate the negative aspects of DBB, several alternative contracting methods and alternative project delivery systems have been devised and introduced to the industry over the past 30 years. Five such innovations were tested by a research team from the University of Florida under the sponsorship of the Florida Department of Transportation (FDOT). To perform a realistic assessment, this study categorized FDOT projects built between 2006 and 2015 into groups according to current contract amounts. Both absolute and relative metrics were defined and employed. For comparison purposes, a collective analysis on all gathered data was performed. Additionally, the influence of outliers on the results was examined. The results showed that analyses based on individual cost categories are more convincing because large projects tend to impose stronger influence on the analyses. In addition, outliers must be identified and screened to reach realistic and reliable conclusions. With regard to the actual performance of the contracting methods, each performs differently within different cost categories.

关键词: alternative contracting methods     time     cost     performance evaluation    

Feasible workspace regions for general two-revolute manipulator

Conghui LIANG, Marco CECCARELLI

《机械工程前沿(英文)》 2011年 第6卷 第4期   页码 397-408 doi: 10.1007/s11465-011-0228-9

摘要:

In this paper, a topology is presented for feasible workspace regions in general two-revolute manipulators. The design problem and concept of feasible workspace regions have been discussed as linked to each other. Design equations are formulated by arbitrarily prescribing four workspace boundary points. The so-called feasible workspace regions are the intersection of three different sub-regions, which are given by constraint curves as function of the relative positions of three workspace boundary points. By using a parametric study, all topologies for three sub-regions are figured out. Corresponding areas in cross section plane are determined for prescribing the position of a feasible workspace point as function of the topology for sub-regions. A classification has been proposed to determine and to characterize the combination of the topologies for those sub-regions. All topologies for feasible workspace regions are figured out and they are discussed as a design tool. Three general cases are analyzed in details to characterize workspace design capabilities for general two-revolute manipulators.

关键词: workspace     two-revolute manipulators     topology analysis     design    

卫星移动网络总体概念设计仿真

金士尧

《中国工程科学》 2004年 第6卷 第1期   页码 30-36

摘要:

卫星移动网络是以卫星星座为基本物理架构,通过星际的通信链路形成覆盖全球的天基通信网络。它对社会发展、科技进步以及军队的信息化有着重大的推动作用。由于天网的移动性、通信的偶断性、接入的复杂性以及使用的综合性,都为研制提出了重大的挑战。有必要通过总体概念设计仿真,来进一步验证总体需求、总体方案、关键技术指标和研制的约束条件,形成科学的可行性报告。介绍了卫星移动网络的总体概念,设计了针对天网仿真的平台,并用实例获得卫星移动网络总体概念设计的仿真数据。

关键词: 卫星移动网络     总体     仿真    

舰船总体设计中的RMTSS研究

张磊,王平,李军

《中国工程科学》 2015年 第17卷 第5期   页码 20-24

摘要:

阐述了可靠性、维修性、测试性、保障性、安全性(简称RMTSS)工作在舰船总体设计的论证、方案设计、深化方案设计、技术设计、施工设计、建造交付及使用等各阶段的工作项目及成果,并分别对各工作项目的要求进行了分析,最后根据在RMTSS工作中所面临的主要问题,提出了相应的建议。

关键词: 可靠性;维修性;测试性;保障性;安全性;舰船总体    

Study on System Coupling Interaction of Large-Scale Construction Companies Programme Contracting and

Feng Guo,Tian Huang

《工程管理前沿(英文)》 2015年 第2卷 第2期   页码 137-140 doi: 10.15302/J-FEM-2015022

摘要: Constant changes in the construction market have resulted in individual projects being challenged to meet the long-term growth needs of large construction companies. Change should be based on the construction of this new model project group, to achieve better interaction, and to allow for a more rapid enterprise development. This paper is based on the system coupling analysis of large-scale construction enterprises and construction projects. A clear system presents itself and forms the basis of the system construction, institutional change and mechanism of the path between base construction projects and business growth.

关键词: programme contracting     firm growth     coupling interaction     system     large construction companies    

我国通用航空公司及相关企业的运营模式探究

宋薇薇,赵立杰,项松,王悦,李作学

《中国工程科学》 2019年 第21卷 第3期   页码 127-132 doi: 10.15302/J-SSCAE-2019.03.021

摘要:

通用航空以其自身包含范围广泛等优点,近些年得到了广泛重视,通航企业数量迅速增加,通用航空企业规模不断扩大。但是,通用航空企业要保持快速发展,并创造更多的社会价值和市场价值,选择合适的运营模式就显得至关重要。本文通过借鉴发达国家经验,结合我国通用航空企业发展的实际需求,对中国通用航空公司及相关企业的运营模式进行了深入研究。同时,以辽宁锐翔通用航空有限公司为例,采用理论结合实际情况,应用PEST-SWOT 分析方法,全面系统地分析了辽宁锐翔通用航空有限公司的发展所具备的内部优势、劣势和面临的机遇、威胁,并提出了相应的发展策略。

关键词: 交通运输     通用航空公司     相关企业     运营模式     SWOT-PEST 分析法    

农村可持续发展能源战略对策与建议

邓可蕴,贺亮

《中国工程科学》 2000年 第2卷 第8期   页码 43-54

摘要:

根据我国农村地区可持续发展的能源战略和建设方针,文章总结、分析了农村能源建设的经验。按照市场经济体制改革的形势,分阶段提出了农村地区能源资源节约、开发和综合利用等方面的战略重点和对策建议。并系统地探讨了县级农村能源综合建设的成功模式,指出了农村能源建设的发展方向。

关键词: 农村能源     技术     政策     综合建设模式    

Are Relational Contracting Approaches Applicable to Public Projects in China?

Wei-ya Hao,Hui-ping Ding,Yong-jian Ke,Ying-ying Wang

《工程管理前沿(英文)》 2014年 第1卷 第4期   页码 358-363 doi: 10.15302/J-FEM-2014052

摘要: Rising complexities in construction projects management has boosted the importance of relational contracting (RC) in the field. RC is based on recognition of mutual benefits and win-win scenarios gained through more cooperative relationships between contracting parties. There have been a range of RC initiatives across many countries towards deeper collaborative relationships; however, such formal RC approaches are not yet well established in China. In this paper, the feasibility of implementing RC in the China’s public construction projects is investigated. The results indicate that RC is highly feasible for implementation in China due to its theoretical benefits, its alignment to Chinese culture, and its behaviors in past public construction projects. Three strategies for facilitating the implementation of RC in China are proposed.

关键词: relational contracting     public construction     relationship    

INTERCROPPING: FEED MORE PEOPLE AND BUILD MORE SUSTAINABLE AGROECOSYSTEMS

《农业科学与工程前沿(英文)》 2021年 第8卷 第3期   页码 373-386 doi: 10.15302/J-FASE -2021398

摘要:

Intercropping is a traditional farming system that increases crop diversity to strengthen agroecosystem functions while decreasing chemical inputs and minimizing negative environmental effects of crop production. Intercropping is currently considerable interest because of its importance in sustainable agriculture. Here, we synthesize the factors that make intercropping a sustainable means of food production by integrating biodiversity of natural ecosystems and crop diversity. In addition to well-known yield increases, intercropping can also increase yield stability over the long term and increase systemic resistance to plant diseases, pests and other unfavorable factors (e.g. nutrient deficiencies). The efficient use of resources can save mineral fertilizer inputs, reduce environmental pollution risks and greenhouse gas emissions caused by agriculture, thus mitigating global climate change. Intercropping potentially increases above- and below-ground biodiversity of various taxa at field scale, consequently it enhances ecosystem services. Complementarity and selection effects allow a better understanding the mechanisms behind enhanced ecosystem functioning. The development of mechanization is essential for large-scale application of intercropping. Agroecosystem multifunctionality and soil health should be priority topics in future research on intercropping.

 

关键词: agroecosystems , crop diversity ,intercropping,interspecific interactions,sustainable agriculture    

Utilizing big data to build personalized technology and system of diagnosis and treatment in traditional

null

《医学前沿(英文)》 2014年 第8卷 第3期   页码 272-278 doi: 10.1007/s11684-014-0364-9

CAP1400 的总体设计和技术创新 Review

郑明光,严锦泉,申屠军,田林,王煦嘉,邱忠明

《工程(英文)》 2016年 第2卷 第1期   页码 97-102 doi: 10.1016/J.ENG.2016.01.018

摘要:

压水堆CAP1400是基于中国核工业研发体系和装备制造能力以及非能动压水堆AP1000 的引进和消化吸收,并经过集成创新与再创新而形成的具有自主知识产权的第三代非能动先进压水堆核电型号。本文通过对CAP1400的总体设计思路、主要性能指标和技术参数、电站安全设计,以及在安全性、经济性和先进性等方面的阐述,论述了CAP1400作为第三代压水堆堆型的技术内涵和技术创新。此外,作为国家科技重大专项的成果,CAP1400型号的研发促进了中国自主核电在研发设计、试验和设备制造水平方面的整体提升,实现了核电设计与装备技术由第二代到第三代的升级。

关键词: CAP1400     先进非能动技术     总体设计     自主化     技术创新    

架起科学与经济之间的桥梁

Hans-Jurgen Warnecke

《中国工程科学》 2000年 第2卷 第10期   页码 16-17

水轮机抗磨蚀金属材料的优化设计

王飚,张自华,王宇栋

《中国工程科学》 2000年 第2卷 第2期   页码 64-67

摘要:

对抗磨蚀金属材料的基础研究表明,在10种常用结构材料的金属中,以钨、钴、铬的抗气蚀性最佳;生产应用研究结果表明,钨系材料中的火焰喷焊WC-M硬面陶瓷材料,铬系材料中的电镀稀土铬硬面材料,钴系材料中的等离子喷焊CoCrWC硬面材料,都是抗磨蚀性能较优,成本较低,并可进入工业应用的水轮机抗磨蚀结构材料。

关键词: 水轮机     磨蚀材料     设计    

标题 作者 时间 类型 操作

How does the improved DB mode degrade the complex integrity of infrastructure mega-projects?

Jinwen ZHANG, Yumin QIU

期刊论文

General framework for bridge life cycle design

Junhai MA, Airong CHEN, Jun HE

期刊论文

Performance of seven highway construction contracting methods analyzed by project size

Yuanxin ZHANG, Abdol CHINI, R. Edward MINCHIN Jr., Lourdes PTSCHELINZEW, Dev SHAH

期刊论文

Feasible workspace regions for general two-revolute manipulator

Conghui LIANG, Marco CECCARELLI

期刊论文

卫星移动网络总体概念设计仿真

金士尧

期刊论文

舰船总体设计中的RMTSS研究

张磊,王平,李军

期刊论文

Study on System Coupling Interaction of Large-Scale Construction Companies Programme Contracting and

Feng Guo,Tian Huang

期刊论文

我国通用航空公司及相关企业的运营模式探究

宋薇薇,赵立杰,项松,王悦,李作学

期刊论文

农村可持续发展能源战略对策与建议

邓可蕴,贺亮

期刊论文

Are Relational Contracting Approaches Applicable to Public Projects in China?

Wei-ya Hao,Hui-ping Ding,Yong-jian Ke,Ying-ying Wang

期刊论文

INTERCROPPING: FEED MORE PEOPLE AND BUILD MORE SUSTAINABLE AGROECOSYSTEMS

期刊论文

Utilizing big data to build personalized technology and system of diagnosis and treatment in traditional

null

期刊论文

CAP1400 的总体设计和技术创新

郑明光,严锦泉,申屠军,田林,王煦嘉,邱忠明

期刊论文

架起科学与经济之间的桥梁

Hans-Jurgen Warnecke

期刊论文

水轮机抗磨蚀金属材料的优化设计

王飚,张自华,王宇栋

期刊论文