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Salinity Gradient Energy: Current State and New Trends

Olivier Schaetzle, Cees J. N. Buisman

Engineering 2015, Volume 1, Issue 2,   Pages 164-166 doi: 10.15302/J-ENG-2015046

Abstract:

In this article we give an overview of the state of the art of salinity gradient technologies.We first introduce the concept of salinity gradient energy, before describing the current state of developmentWe conclude with the new trends in the young field of salinity gradient technologies.

Keywords： salinity gradient energy     pressure-retarded osmosis     reverses electrodialysis    

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Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 522-532 doi: 10.1007/s11709-023-0930-9

Abstract: Pressure maintenance openings are typically used under complicated hydrogeological conditions.Owing to the high risk of face failure, the necessity of support pressure when cutterhead support isimplemented and a method for determining the value of compressed air pressure using different supportThe required compressed air pressure increases significantly as the support ratio decreases.To satisfy the requirement of chamber openings at atmospheric pressure, the stratum reinforcement strength

Keywords： tunnel face stability     cutterhead configuration     aperture ratio     pressure gradient     support ratio    

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Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 414-422 doi: 10.1007/s11708-009-0038-5

Abstract: An axial-type fan that operates at a relative total pressure of 671Pa and a static pressure of;Pa with a flowrate of 416.6m/min is developed using an optimization technique based on the gradientThe total and static pressure are applied to the restriction condition with the operating flowrate on

Keywords： axial-type fan     gradient method     free-vortex method     design variable     total pressure     static pressure     operating    

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The Ejection and Sweep in the Wall Region of a Turbulent Boundary Layer Under Adverse Pressure Gradient

Zhang Qiang,Lu Lipeng

Strategic Study of CAE 2003, Volume 5, Issue 11,   Pages 47-50

Abstract: The evolution of coherent structures in the wall region of a turbulent boundary layer under adverse pressurethe shear stress, the contribution of sweep motions is stronger than that of ejections under adverse pressuregradient.transport of shear-stress and kinetic energy of turbulence more strongly than the ejections under adverse pressuregradient.

Keywords： coherent structures     turbulent boundary layer     adverse pressure gradients     direct numerical simulation    

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Application of extreme gradient boosting in predicting the viscoelastic characteristics of graphene oxide

Frontiers of Structural and Civil Engineering 2024, Volume 18, Issue 6,   Pages 899-917 doi: 10.1007/s11709-024-1025-y

Abstract: The purpose of this investigation is to construct an extreme gradient boosting (XGB) model to predict

Keywords： complex modulus     phase angle     graphene oxide     asphalt     extreme gradient boosting     machine learning    

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prediction and optimization design of sustainable concrete based on squirrel search algorithm-extreme gradient

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 9,   Pages 1310-1325 doi: 10.1007/s11709-023-0997-3

Abstract: traditional compressive strength test, this study combines five novel metaheuristic algorithms with extreme gradientThe results indicated that the squirrel search algorithm-extreme gradient boosting (SSA-XGB) yielded

Keywords： sustainable concrete     fly ash     slay     extreme gradient boosting technique     squirrel search algorithm    

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Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 2,   Pages 187-197 doi: 10.1007/s11465-015-0339-9

Abstract:

In this paper, for the first time, the modified strain gradient theory is used as a new size-dependentAfter obtaining the governing equations based on modified strain gradient theory via principle of minimumpotential energy, as only infinitesimal vibration is considered, the net pressure due to the vdW interaction

Keywords： graphene     van der Waals (vdW) force     modi- fied strain gradient elasticity theory     size effect parameter    

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Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators

Hamid M. SEDIGHI, Hassen M. OUAKAD

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 6,   Pages 1520-1530 doi: 10.1007/s11709-020-0672-x

Abstract: undertake two models to capture the nanostructure nonlocal size effects: the strain and the velocity gradientThe structural nonlinear behavior of the system assuming both strain and velocity gradient theories is

Keywords： velocity gradient elasticity theory     nanotube resonators     differential-quadrature method     nonlinear vibration    

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Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective boundary conditions

Liang ZHAO, Linhua LIU,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 381-388 doi: 10.1007/s11708-009-0057-2

Abstract: The effect of Joule heating on the induced pressure gradient is also studied, which is very importantThe results reveal that the induced pressure gradient, taking into consideration Joule heating, is significantlyThe induced pressure gradient difference between considering Joule heating and without considering Joule

Keywords： closed-end micro-channel     electrical double layer     electro-osmotic flow     induced pressure gradient     Joule    

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Gradient boosting dendritic network for ultra-short-term PV power prediction

Frontiers in Energy doi: 10.1007/s11708-024-0915-y

Abstract: Based on a gradient boosting strategy and a dendritic network, this paper proposes a novel ensemble predictionmodel, named gradient boosting dendritic network (GBDD) model which can reduce the forecast error by

Keywords： photovoltaic (PV) power prediction     dendrite network     gradient boosting strategy    

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Predicting shear strength of slender beams without reinforcement using hybrid gradient boosting trees

Thuy-Anh NGUYEN; Hai-Bang LY; Van Quan TRAN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1267-1286 doi: 10.1007/s11709-022-0842-0

Abstract: Gradient Boosting (GB) technique was developed and evaluated in combination with three different optimization

Keywords： slender beam     shear strength     gradient boosting     optimization algorithms    

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Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 227-237 doi: 10.1631/FITEE.1400217

Abstract: We present a novel image fusion scheme based on gradient and scrambled block Hadamard ensemble (SBHE)In the fusion phase, the image gradient is calculated to reflect the abundance of its contour informationBy compositing the gradient of each image, gradient-based weights are obtained, with which compressiveSimulation results demonstrate that the gradient-based scheme has the best performance, in terms of bothFurthermore, the gradient-based fusion scheme proposed in this paper can be applied in different fusion

Keywords： Compressive sensing (CS)     Image fusion     Gradient-based image fusion     CS-based image fusion    

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Development of gradient boosting-assisted machine learning data-driven model for free chlorine residual

Frontiers of Environmental Science & Engineering 2024, Volume 18, Issue 2, doi: 10.1007/s11783-024-1777-6

Abstract:

● A machine learning approach was applied to predict free chlorine residuals.

Keywords： Machine learning     Data-driven modeling     Drinking water treatment     Disinfection     Chlorination    

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Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 9,   Pages 1326-1340 doi: 10.1007/s11709-023-0014-x

Abstract: Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Keywords： strain relationship concrete    

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Magnetic Interactions with Strain Gradient in Ultrathin Pr0.67Sr0.33MnO3 Films

Bangmin Zhang,Ping Yang,Jun Ding,Jingsheng Chen,Gan Moog Chow,

Engineering doi: 10.1016/j.eng.2024.04.014

Abstract: Strain gradient is a normal phenomenon around a heterostructural interface in ultrathin film, and itsaturated magnetization with zero field cooling and 5 T field cooling is proportional to the strain gradientStrain-gradient-induced structural disorder is proposed to enhance phonon–electron antiferromagneticA non-monotonous structural transition of the MnO6 octahedral rotation can enlarge the strain gradient

Keywords： Strain gradient     Manganite film     Octahedral rotation     Flexomagnetic     Magnetic interactions     Phase transition    

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Title Author Date Type Operation

Salinity Gradient Energy: Current State and New Trends

Olivier Schaetzle, Cees J. N. Buisman

Journal Article

Effect of cutterhead configuration on tunnel face stability during shield machine maintenance outages

Journal Article

Development of an axial-type fan with an optimization method

Chong-hyun CHO, Soo-yong CHO, Chaesil KIM,

Journal Article

The Ejection and Sweep in the Wall Region of a Turbulent Boundary Layer Under Adverse Pressure Gradient

Zhang Qiang,Lu Lipeng

Journal Article

Application of extreme gradient boosting in predicting the viscoelastic characteristics of graphene oxide

Journal Article

prediction and optimization design of sustainable concrete based on squirrel search algorithm-extreme gradient

Journal Article

Vibration analysis of nano-structure multilayered graphene sheets using modified strain gradient theory

Amir ALLAHBAKHSHI,Masih ALLAHBAKHSHI

Journal Article

Velocity gradient elasticity for nonlinear vibration of carbon nanotube resonators

Hamid M. SEDIGHI, Hassen M. OUAKAD

Journal Article

Effect of Joule heating on electro-osmotic flow in a closed-end micro-channel with isothermal and convective boundary conditions

Liang ZHAO, Linhua LIU,

Journal Article

Gradient boosting dendritic network for ultra-short-term PV power prediction

Journal Article

Predicting shear strength of slender beams without reinforcement using hybrid gradient boosting trees

Thuy-Anh NGUYEN; Hai-Bang LY; Van Quan TRAN

Journal Article

Gradient-based compressive image fusion

Yang CHEN,Zheng QIN

Journal Article

Development of gradient boosting-assisted machine learning data-driven model for free chlorine residual

Journal Article

Influence of freeze–thaw damage gradient on stress–strain relationship of stressed concrete

Journal Article

Magnetic Interactions with Strain Gradient in Ultrathin Pr0.67Sr0.33MnO3 Films

Bangmin Zhang,Ping Yang,Jun Ding,Jingsheng Chen,Gan Moog Chow,

Journal Article