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Research on depth of earth cover for shield tunnel anti-buoyancy security

Liu Xueyan,Yuan Dajun and Jiang Xi

Strategic Study of CAE 2015, Volume 17, Issue 1,   Pages 88-95

Abstract:

The depth of earth cover for tunnel anti-buoyancy security during construction and operation was analyzedThe formula of depth of earth cover for anti-buoyancy security of tunnel during construction was givenThe weight of earth cover for tunnel was suggested to consider as unique factor for tunnel security duringoperation.The eroded depth for design should be considered for tunnel influenced by floods.

Keywords： anti-buoyancy security； tunnel construction period； tunnel operation period； depth of earth cover    

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Risk assessment on Bohai Bay subsea tunnel in its operational period

Wang Yonghong,Liu Bing,Zhang Yonggang

Strategic Study of CAE 2013, Volume 15, Issue 12,   Pages 107-112

Abstract:

The operation of super-long subsea tunnel is a extremly complex systemThe procedure of risk assessment was explained in detail,and its application on Bohai Bay subsea tunnelFirstly, lots of different risk factors of the subsea tunnel operation were identified systematically, which involved water damage,tunnel lining crack, tunnel freezing,tunnel lining corrosion,tunnel earthquakedisaster,the air pollution inside the cave,tunnel fire and the train derailment accident.

Keywords： subsea tunnel     operational period     risk analysis     risk assessment    

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Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 4,   Pages 455-461 doi: 10.15302/J-FASE-2018232

Abstract: was studied, focusing on the effects of pesticide deposition on cotton leaves during the flowering period

Keywords： aerial spray     cotton     deposition     flowering period     leaf angle     prewetting     UAV    

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Using hydrochemical signatures to characterize the long-period evolution of groundwater information in

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1393-7

Abstract:

• The long-period groundwater evolution was identified by hydrochemical

Keywords： Groundwater quality     Hydrochemical signatures     Spatial-temporal variations     Water-rock interactions     Anthropogenic interventions    

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Mechanism design of reverse auction on concession period and generalized quality for PPP projects

Xianjia WANG, Shiwei WU

Frontiers of Engineering Management 2017, Volume 4, Issue 2,   Pages 156-170 doi: 10.15302/J-FEM-2017016

Abstract: PPP projects usually require the bid to specify several characteristics of quality and the concession periodmodel of a PPP project can be replaced by a two-dimensional direct mechanism based on the concession period

Keywords： PPP project     reverse auction     mechanism design     multidimensional information     scoring function     two-stage bidding    

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Neural Operation Management: A New Avenue for Productive and Military Operations

Qing-guo Ma

Frontiers of Engineering Management 2014, Volume 1, Issue 3,   Pages 304-307 doi: 10.15302/J-FEM-2014039

Abstract: the operator’s capabilities in cognition, judgment and decision-making has drawn much attention from operationMonitoring and evaluation of these capabilities is especially significant in conditions such as long-time operation, operation with special properties and operation under special circumstances.and then to give real time intervention, so as to reduce the occurrence of accidents and increase the operation

Keywords： operation management     productive operation     military operation     neural operation management     neuromanagement    

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A novel period estimation method for X-ray pulsars based on frequency subdivision

Li-rong SHEN,Xiao-ping LI,Hai-feng SUN,Hai-yan FANG,Meng-fan XUE

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 858-870 doi: 10.1631/FITEE.1500052

Abstract: Period estimation of X-ray pulsars plays an important role in X-ray pulsar based navigation (XPNAV).The fast Lomb periodogram is suitable for period estimation of X-ray pulsars, but its performance infrequency subdivision and the continuous Lomb periodogram (CLP) is proposed to improve precision of periodFinally, a refined period is achieved by calculating the CLP in the obtained frequencies.Furthermore, the proposed method performs better than efsearch (a period estimation method of HEAsoft

Keywords： Pulsar navigation     Period estimation     Frequency subdivision     Continuous Lomb periodogram    

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Experimental research on the multilayer compartmental particle damper and its application methods on long-period

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 4,   Pages 751-766 doi: 10.1007/s11709-018-0509-z

Abstract: To introduce particle damping technology to long-period structure seismic control, a novel multilayercompartmental particle damper (MCPD) was proposed, and a 1/20 scale test model of a typical long-periodThe results showed that the seismic responses of the flexible or semi-flexible bridge towers of long-periodA well-designed MCPD can achieve significant damping for long-period structures under seismic excitationsapplication of MCPDs for seismic control of single-tower self-anchored suspension bridges and other long-period

Keywords： multilayer compartmental particle damper     self-anchored suspension bridges     shaking tables test     long-period    

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Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 44-59 doi: 10.1007/s11465-015-0360-z

Abstract: This paper also includes a review of more than 160 papers in Russian for the period of 1935–1975The main features and achievements during this period are also considered.The diagrams also show the following aspects: 1) The most popular and important themes in a specific period

Keywords： theory of gearing (TG)     gear geometry     generating surface     gear synthesis     gear analysis    

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Long Undersea Tunnels: Recognizing and Overcoming the Logistics of Operation and Construction Article

Gareth Mainwaring, Tor Ole Olsen

Engineering 2018, Volume 4, Issue 2,   Pages 249-253 doi: 10.1016/j.eng.2018.03.004

Abstract: planning and construction take a considerable amount of time, they form important fixed links once in operationand operations, which relate to the lack of intermediate access points along the final route of the tunnel

Keywords： Channel Tunnel     Fixed link     Fire and life safety     Shafts     Gravity structures    

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Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 51-53

Abstract:

Subjected to the annual changes of the air temperature, the quasi-period rules of the operationaldelay of the operational parameters must be considered in the studies of the saving energy, optimizing operation

Keywords： hot oil pipeline     air temperature     soil environment     quasi-period    

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Short-term effect of temperature variation on the competition between PAOs and GAOs during acclimation period

Nanqi REN, Han KANG, Xiuheng WANG, Nan LI

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 277-282 doi: 10.1007/s11783-010-0226-x

Abstract: During the 34 days operation, SBR was set with temperature variation(0–5 d, 22±1°C; 6–13 d, 29±1°C; 14

Keywords： fluorescent in situ hybridization (FISH)     tetrad forming organisms (TFOs)     temperature variation     enhanced biological phosphorus removal (EBPR)    

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analysis in conventional and organic rice production systems and organic scenarios in the transition period

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Frontiers in Energy 2012, Volume 6, Issue 4,   Pages 341-350 doi: 10.1007/s11708-012-0206-x

Abstract: scenarios were designed to predict the changes of energy budget and economic analysis in the transition periodIncrease in energy efficiency and productivity was predicted for the transition period but decrease trendin economic indexes was projected for this period in all scenarios.was that the market price of organic rice was the same as that of conventional rice in the transition period

Keywords： energy efficiency     specific energy     net return     Cobb-Douglas function    

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Short-Range Current Velocity Records to Apply in the Reference Period for Sutong Bridge

Su Hui,Gong Weiming,Liang Shuting

Strategic Study of CAE 2006, Volume 8, Issue 7,   Pages 42-46

Abstract:

The current velocity of reference period is determined by the local primitive data.A method is introduced to determine the current velocity of reference period through short-range currentPresuming the extreme value by way of minority sample，the current velocity of reference period is calculated.Correlation

Keywords： short-range records     the current velocity of reference period     correlation analysis     regression equation    

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Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 84-86

Abstract:

Directed against the demarcating problems of deep tunnel and shallow tunnel in exiting methods, thefeasible by two engineering cases, and is of importantce to lining design and construction of soil tunnel

Keywords： soil tunnel     deep tunnel and shallow tunnel     demarcating method    

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Title Author Date Type Operation

Research on depth of earth cover for shield tunnel anti-buoyancy security

Liu Xueyan,Yuan Dajun and Jiang Xi

Journal Article

Risk assessment on Bohai Bay subsea tunnel in its operational period

Wang Yonghong,Liu Bing,Zhang Yonggang

Journal Article

Effect of UAV prewetting application during the flowering period of cotton on pesticide droplet deposition

Weixiang YAO, Xianju WANG, Yubin LAN, Ji JIN

Journal Article

Using hydrochemical signatures to characterize the long-period evolution of groundwater information in

Journal Article

Mechanism design of reverse auction on concession period and generalized quality for PPP projects

Xianjia WANG, Shiwei WU

Journal Article

Neural Operation Management: A New Avenue for Productive and Military Operations

Qing-guo Ma

Journal Article

A novel period estimation method for X-ray pulsars based on frequency subdivision

Li-rong SHEN,Xiao-ping LI,Hai-feng SUN,Hai-yan FANG,Meng-fan XUE

Journal Article

Experimental research on the multilayer compartmental particle damper and its application methods on long-period

Zhenyuan LUO, Weiming YAN, Weibing XU, Qinfei ZHENG, Baoshun WANG

Journal Article

Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Journal Article

Long Undersea Tunnels: Recognizing and Overcoming the Logistics of Operation and Construction

Gareth Mainwaring, Tor Ole Olsen

Journal Article

Quasi-period Changes of the Operational Parameters for Hot Oil Pipelines

Cui Hui

Journal Article

Short-term effect of temperature variation on the competition between PAOs and GAOs during acclimation period

Nanqi REN, Han KANG, Xiuheng WANG, Nan LI

Journal Article

analysis in conventional and organic rice production systems and organic scenarios in the transition period

Hamed MANSOORI, Parviz Rezvani MOGHADDAM, Rooholla MORADI

Journal Article

Short-Range Current Velocity Records to Apply in the Reference Period for Sutong Bridge

Su Hui,Gong Weiming,Liang Shuting

Journal Article

Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Journal Article