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Hybrid genetic algorithm for bi-objective resource-constrained project scheduling

Fikri KUCUKSAYACIGIL, Gündüz ULUSOY

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 426-446 doi: 10.1007/s42524-020-0100-x

Abstract: We developed a hybrid non-dominated sorting genetic algorithm II (hybrid-NSGA-II) as a solution methodby introducing a backward–forward pass (BFP) procedure and an injection procedure into NSGA-II.Then, an injection procedure was introduced to increase diversity.The BFP and injection procedures led to improved objective functional values.Results showed that hybrid-NSGA-II surpassed NSGA-II in terms of the performance metrics hypervolume,

Keywords： backward–forward scheduling     hybrid bi-objective genetic algorithm     injection procedure     maximum cash balance    

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Research on DC Protection Strategy in Multi-Terminal Hybrid HVDC System Article

Yuping Zheng, Jiawei He, Bin Li, Tonghua Wu, Wei Dai, Ye Li

Engineering 2021, Volume 7, Issue 8,   Pages 1064-1075 doi: 10.1016/j.eng.2021.05.002

Abstract:

Multi-terminal hybrid high-voltage direct current (HVDC) systems have been developed quickly in recentHowever, for voltage-source converter (VSC) stations in hybrid HVDC systems, no direct current (DC) filtersbased HVDC (LCC-HVDC) systems or VSC-HVDC systems cannot distinguish the fault line in multi-terminal hybridThis paper proposes a novel single-ended DC protection strategy suitable for the multi-terminal hybridHVDC system, which mainly applies the transient information and active injection concept to detect and

Keywords： Multi-terminal hybrid HVDC system     Single-ended protection     Transient information     Active injection    

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Initial position estimation strategy for a surface permanent magnet synchronous motor used in hybrid Article

Bing TIAN,Qun-tao AN,Li SUN,Dong-yang SUN,Jian-dong DUAN

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8,   Pages 803-813 doi: 10.1631/FITEE.1500298

Abstract: permanent magnet synchronous motors (SPMSMs) is adopted to estimate the initial rotor position for hybridHybrid injection of a static voltage vector (SVV) superimposed with a high-frequency rotating voltage

Keywords： Surface permanent magnet synchronous motor (SPMSM)     Initial position estimation     Nonlinear model     Hybridinjection     Position observer    

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Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 74-84 doi: 10.1007/s11465-018-0490-1

Abstract:

Compared with conventional injection molding, injection-compression molding can mold optical partsIn this study, a 3D simulation method was developed for injection-compression molding.in the cavity were investigated by using the proposed simulation method and compared with those of injectionpressures at different points along the flow path is complicated rather than monotonically decreased in injection

Keywords： injection-compression molding     simulation     injection molding     melt flow     cavity pressure    

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density measurement for plastic injection molding via ultrasonic technology

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0714-2

Abstract: Density variation during the injection molding process directly reflects the state of plastic melt andExperiments with different process conditions are conducted, including different melt temperature, injectioni> measurement, non-destructive, high accuracy, low cost, and is of great application value for the injection

Keywords： ultrasonic measurement     melt density     in-situ measurement     injection molding    

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Economic Development Models of Gas Condensate Reservoir

Liu Tingyuan

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 85-91

Abstract: condensate reservoirs, including reinjection with 75% dry gas recycling, dumpflooding of gas, nitrogen injection, water injection, water and gas alternating injection, C〇2 injection, etc.

Keywords： gas condensate reservoir     development model     gas injection     nitrogen injection     water injection     CO 2 injection     economic    

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Trend prediction technology of condition maintenance for large water injection units

Xiaoli XU, Sanpeng DENG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 171-175 doi: 10.1007/s11465-009-0091-0

Abstract: Large-sized water injection units are key equipment in oilfields.maintenance costs, trend prediction technology is studied to achieve condition-based maintenance for water injectionproposed trend prediction technology can reflect the operating condition trend change of the water injection

Keywords： water injection units     condition-based maintenance     trend prediction    

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Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 85-95 doi: 10.1007/s11465-018-0491-0

Abstract:

Injection molding is one of the most widely used material processing methods in producing plasticstudies and developments of the intelligent methods applied in the process parameter determination of injection

Keywords： injection molding     intelligent methods     process parameters     optimization    

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methodology for regulating fuel stratification and improving fuel economy of GCI mode via double main-injection

Frontiers in Energy 2023, Volume 17, Issue 5,   Pages 678-691 doi: 10.1007/s11708-022-0859-z

Abstract: regulating concentration stratification and promoting fuel-gas mixing by utilizing the double main-injectioninjected gasoline with an octane number of 82.7 to investigate the energy ratio between the two main-injectionHigh-load experiments were conducted using the DMI strategy and compared with the single main-injectionAt a 10 bar indicated mean effective pressure, increasing the main-injection-2 ratio (Rm-2) shortens the injection duration and increases the mean mixing time.

Keywords： gasoline compression ignition     injection strategy     fuel stratification     high efficiency     high load    

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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 428-445 doi: 10.1007/s11708-023-0865-9

Abstract: For the core flooding tests, pure gas injection showed that the breakthrough time of CO2 was of CO2 gas injectionFor CO2/N2 mixed gas injection, with the increase of CO2 concentration of the pure CO2 gas injection

Keywords： shale gas     gas injection     competitive adsorption     enhanced shale gas recovery     CO2 geological    

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Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Frontiers in Energy 2022, Volume 16, Issue 6,   Pages 900-915 doi: 10.1007/s11708-021-0812-6

Abstract: In this study, dual injection stratified combustion mode is used to accelerate the burning rate of leanThe effects of engine control parameters such as the excess air coefficient (Lambda), direct injectionand DI timing on combustion, fuel consumption, gaseous emissions, and particulate emissions of a dual injectionThere exists a spark window for dual injection stratified lean burn mode, in which the spark timing hasThe dual injection stratified lean burn has a wide range of applications which can effectively reduce

Keywords： dual injection     stratified lean burn     gasoline engine     particulate matter emission     combustion analysis    

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Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable

Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 96-106 doi: 10.1007/s11465-018-0498-6

Abstract:

A three-stage molding process involving microcellular injection molding with core retraction and anfoams of varying local densities, microstructures, and mechanical properties in the same microcellular injection

Keywords： thermoplastic polyurethane     microcellular injection molding     cavity expansion     compressive strength     hysteresis    

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Pressure in Gas-assisted Injection Molding

Ou Changjin

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 27-32

Abstract: nbsp;an effective control method and strategy based on fuzzy neural network has been developed for gas injectionpressure accurate control in gas-assisted injection.

Keywords： gas-assisted injection molding     fuzzy neural network     gas-injection pressure control    

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Combustion characteristics of a direct-injection diesel engine fueled with Fischer-Tropsch diesel

HUANG Yongcheng, ZHOU Longbao, PAN Keyu

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 239-244 doi: 10.1007/s11708-007-0033-7

Abstract: pressures and injector needle lifts, the combustion characteristics of an unmodified single-cylinder direct-injectionThe results show that F-T diesel fuel exhibits a slightly longer injection delay and injection duration
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Title Author Date Type Operation

Hybrid genetic algorithm for bi-objective resource-constrained project scheduling

Fikri KUCUKSAYACIGIL, Gündüz ULUSOY

Journal Article

Research on DC Protection Strategy in Multi-Terminal Hybrid HVDC System

Yuping Zheng, Jiawei He, Bin Li, Tonghua Wu, Wei Dai, Ye Li

Journal Article

Initial position estimation strategy for a surface permanent magnet synchronous motor used in hybrid

Bing TIAN,Qun-tao AN,Li SUN,Dong-yang SUN,Jian-dong DUAN

Journal Article

Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Journal Article

density measurement for plastic injection molding via ultrasonic technology

Journal Article

Economic Development Models of Gas Condensate Reservoir

Liu Tingyuan

Journal Article

Trend prediction technology of condition maintenance for large water injection units

Xiaoli XU, Sanpeng DENG

Journal Article

Intelligent methods for the process parameter determination of plastic injection molding

Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI

Journal Article

Corrigendum to ‘‘A High-Efficiency Two-Stroke Engine Concept: The Boosted Uniflow Scavenged Direct-InjectionGasoline (BUSDIG) Engine with Air Hybrid Operation” [Engineering 5 (2019) 535–547]

Xinyan Wang, Hua Zhao

Journal Article

methodology for regulating fuel stratification and improving fuel economy of GCI mode via double main-injection

Journal Article

CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Journal Article

Experimental study of stratified lean burn characteristics on a dual injection gasoline engine

Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG

Journal Article

Microcellular injection molding process for producing lightweight thermoplastic polyurethane with customizable

Thomas ELLINGHAM, Hrishikesh KHARBAS, Mihai MANITIU, Guenter SCHOLZ, Lih-Sheng TURNG

Journal Article

Pressure in Gas-assisted Injection Molding

Ou Changjin

Journal Article

Combustion characteristics of a direct-injection diesel engine fueled with Fischer-Tropsch diesel

HUANG Yongcheng, ZHOU Longbao, PAN Keyu

Journal Article