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Major Difficult Problems in the Construction of the Three Gorges Project

Wang Jiazhu

Strategic Study of CAE 2003, Volume 5, Issue 8, Pages 16-22

Abstract: This paper expounds a large number of major technical problems that has been,and will be, solved in theconstruction of the project, and points out that the solution of these problems will be an important

Keywords： TGP science and technology difficult problems

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The Technical Scheme and Key Equipment for Solving the Difficult Technical Problems of Underground Radio

Situ Mengtian

Strategic Study of CAE 2001, Volume 3, Issue 7, Pages 64-69

Abstract:

Two difficult tedhnical problems in underground radio communications, i.e. weak signal reception andcounter lightning pulses interference are described, and ways to solve these problems are proposed .

Keywords： underground radio communications weak signal reception counter lightning interference

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Technical Status, Challenges, and Solutions of Maritime Bridge Engineering

Gao Zongyu, Ruan Huaisheng, Qin Shunquan, Ma Runping, Mei Dapeng

Strategic Study of CAE 2019, Volume 21, Issue 3, Pages 1-4 doi: 10.15302/J-SSCAE-2019.03.016

Abstract: combinations, structural durability, fatigue resistance and life-time design, and focuses on breakthroughs in key

Keywords： marine bridge engineering design theory structural form key and difficult problems technical development

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Loop theory and applications to some key problems of kinematic structure of kinematic chains

Huafeng DING, Zhen HUANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3, Pages 276-283 doi: 10.1007/s11465-009-0061-6

Abstract: Based on this theory, some key problems that hamper computer-based automatic synthesis of mechanisms

Keywords： Loop theory kinematic chains isomorphism atlas database

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Key problems and solutions in arch dam heightening

Zuoguang FU, Yunlong HE, Sheng SU

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 98-104 doi: 10.1007/s11709-010-0004-7

Abstract: Three problems should be dealt with when an arch dam needs to be heightened: stress state getting worseTaking Geba arch dam as an example, these problems are examined in details through simulation analysis

Keywords： arch dam heighten tensile stress finite element method

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Key problems and solutions in supercritical CO

Haizhu WANG, Gensheng LI, Bin ZHU, Kamy SEPEHRNOORI, Lujie SHI, Yong ZHENG, Xiaomei SHI

Frontiers in Energy 2019, Volume 13, Issue 4, Pages 667-672 doi: 10.1007/s11708-019-0626-y

Abstract: However, these properties also cause several problems, such as difficulty in proppant transportation,In this paper, the above problems were analyzed by combining field test with laboratory study and specificsolutions to these problems are given.After solving the above three problems, the field test of supercritical CO fracturing can be conducted

Keywords： supercritical CO₂ fracturing friction loss proppant carrying flied test problem

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Key technologic problems on underwater shield tunnel

Sun Mou,Tan Zhongsheng

Strategic Study of CAE 2009, Volume 11, Issue 7, Pages 18-23

Abstract: such as Wuhan Changjiang tunnel, the determination of reasonable cover thickness, the shield type and keyThe key technology of stabilizing working face, preventing muddy water eruption, preventing tunnel floating

Keywords： underwater tunnel shield cover thickness type selection key construction technology

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Energy field-assisted high-speed dry milling green machining technology for difficult-to-machine metal

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0744-9

Abstract: Energy field-assisted machining technology has the potential to overcome the limitations of machining difficult-to-machineHowever, the lack of necessary cooling and lubrication in high-speed dry milling makes it difficult tomeet the continuous milling requirements for difficult-to-machine metal materials.In this review, the characteristics and limitations of high-speed dry milling of difficult-to-machinedetail, providing feasible ideas for realizing multi-energy field collaborative green machining of difficult-to-machine

Keywords： difficult-to-machine metal material green machining high-speed dry milling laser energy field-assisted

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The actuality and effect by shrinking of surface of east Taihu Lake

Wei Qingfu

Strategic Study of CAE 2010, Volume 12, Issue 6, Pages 123-126

Abstract:

The east Taihu Lake which have the functions of flood control, water supply, water environment protection and aquiculture is the representative grasslike lake in the middle and lower reaches of Changjiang River, it is also the main water exit and adlittoral arm of lake of Taihu Lake and the main water resources of Shanghai City, Jiachenghu town of Zhejiang Province and Wujiang City of Jiangsu Province. For almost half a century the surface of east Taihu Lake constantly reduced by the long-term effect of the natural and artificial factors. The shape of lake and the water environment were seriously damaged which made the process of lake's decay become more faster and cramped the functions of discharge, water supply and water environment protection. This article reviewed the evolution of east Taihu Lake and initially discussed the actuality and effect on the lake's function of the shrinking of surface of east Taihu Lake. And also, several suggestions were carried out for reference on the present treatment plans of the lake.

Keywords： east Taihu Lake water surface shrinking effect key technical problems

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Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine

Jagdeep SINGH,Rajiv Kumar SHARMA

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4, Pages 374-387 doi: 10.1007/s11465-016-0388-8

Abstract: Electrical discharge machining (EDM) is a well-known nontraditional manufacturing process to machine the difficult-to-machine

Keywords： WC hazard and operability analysis (HAZOP) discharging aerosol concentration dielectrics powders

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Qian Xuesen—An Example for Scientific and Technological Circles to Learn From

Tu Yuanji

Strategic Study of CAE 2002, Volume 4, Issue 2, Pages 1-7

Abstract:

Qian Xuesen´s life-time is reviewed in this article and his excellent character and behaviour that are benefited from good family breeding and school education are highly praised. His brilliant talent and plentiful attainments after receiving his training under Theodore von Kármán in the United States are introduced. The article describes, with host of facts that are rarely known, Qian´s unrelenting struggle for returning homeland and the contributions he made with all his heart to China´s space undertaking after he returned to China. Finally, the article reveals Qian´s lofty ideological level and virtuous character towards money, honour and position.

Keywords： life-time seek knowledge tackle key problems in science and technology work style thinking and moral

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The damage effect of earth penetrating weapons and key scientific problems of deep buried protective

Fan Pengxian,Qian Qihu,Wang Mingyang

Strategic Study of CAE 2013, Volume 15, Issue 5, Pages 47-58

Abstract: And several key scientific problems, including comprehensive protection system, nonlinear deep rock mass

Keywords： earth penetrating weapons damage effect deep buried protective engineering

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A review of intelligent optimization for group scheduling problems in cellular manufacturing

Frontiers of Engineering Management Pages 406-426 doi: 10.1007/s42524-022-0242-0

Abstract: , and enhance the flexibility of manufacturing, especially cellular manufacturing, group scheduling problemsstudies on GSPs have been published, few integrated reviews have been conducted so far on considered problemsend, this study hopes to shorten the gap by reviewing the development of research and analyzing these problemsLast but not least, outlooks are given for outspread problems and problem algorithms for future research

Keywords： cellular manufacturing group scheduling flowshop literature review

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Enhanced solution representations for vehicle routing problems with split deliveries

Frontiers of Engineering Management Pages 483-498 doi: 10.1007/s42524-023-0259-z

Abstract: this study, we investigate a forest-based solution representation for split delivery vehicle routing problems(SDVRPs), which have several practical applications and are among the most difficult vehicle routingproblems.

Keywords： vehicle routing multidepot time windows tabu search split delivery

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Overview and problems of BIM implementation in Japan

Takashi KANETA, Shuzo FURUSAKA, Nisi DENG

Frontiers of Engineering Management 2017, Volume 4, Issue 2, Pages 146-155 doi: 10.15302/J-FEM-2017007

Abstract: This paper aims to overview Building Information Modeling (BIM) implementation and problems of BIM implementationThe paper finally discusses the problems in project management to present a strategy to develop a new

Keywords： Building Information Modeling general contractor architect drawing procurement project management