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Design and calibration of a new high-definition three-dimensional laparoscopic system

Jia TANG,Li-qiang WANG,Bo YUAN,Hong JIANG,Qi-ming ZHU

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 1,   Pages 79-84 doi: 10.1631/FITEE.1400149

Abstract: A modified pinhole camera model is used for camera calibration and a new method of depth measurementThe average error of depth measurement measured by experiment (about 1.13 mm) was small in proportion

Keywords: Dual optical channels     Three dimensional     Camera calibration     Pinhole model     Depth measurement     Laparoscopic    

Development of an In-Situ Laser Machining System Using a Three-Dimensional Galvanometer Article

Xiao Li, Bin Liu, Xuesong Mei, Wenjun Wang, Xiaodong Wang, Xun Li

Engineering 2020, Volume 6, Issue 1,   Pages 68-76 doi: 10.1016/j.eng.2019.07.024

Abstract: 0.0001pt">In this study, a three-dimensional(3D) in-situ laser machining system integrating laser measurement and machining was builtA line structured light measurement model based on a galvanometer scanner was proposed to obtain theA height calibration method was proposed to further ensure measurement accuracy, so as to achieve accurateIn comparison with the conventional line structured light measurement method, the proposed methods do

Keywords: In-situ laser machining     Three-dimensional galvanometer scanner     Line structured light     Three-dimensional measurement    

A three-dimensional measurement method for binocular endoscopes based on deep learning Research Article

Hao YU, Changjiang ZHOU, Wei ZHANG, Liqiang WANG, Qing YANG, Bo YUAN,yuanbo@zju.edu.cn

Frontiers of Information Technology & Electronic Engineering 2022, Volume 23, Issue 4,   Pages 653-660 doi: 10.1631/FITEE.2000679

Abstract: In this paper, we propose a three-dimensional (3D) measurement method for binocular endoscopes based3D scanner and the binocular camera is simulated by 3D rendering software to train a model for 3D measurement

Keywords: Key words: Binocular endoscope     Three-dimensional measurement     Deep learning     Disparity estimation    

Inner strain determination of three-dimensional braided preforms with co-braided optical fiber sensors

LI Xianghua, LIU Xiaohui, YUAN Shenfang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 416-420 doi: 10.1007/s11465-008-0062-x

Abstract: The experimental characterization of three-dimensional (3-D) braided composites is extremely important

Keywords: different     experimental characterization     three-dimensional     composite     micro-bend    

Numerical simulation of three-dimensional turbulent flow in multistage axial compressor blade row

JIANG Jian, LIU Bo, WANG Yangang, NAN Xiangyi

Frontiers in Energy 2008, Volume 2, Issue 3,   Pages 320-325 doi: 10.1007/s11708-008-0041-2

Abstract: Numerical simulation of three-dimensional turbulent flow in a multistage axial compressor blade row is

Keywords: simulation     compressor     multistage     third-order     three-dimensional turbulent    

Application of three-dimensional digitalized reconstruction of latissimus dorsi myocutaneous flap

PEI Guoxian, ZHANG Yuanzhi, LI Jianwei, JIN Dan, CHEN Jionghao, LI Yanbing, ZHONG Shizhen

Frontiers of Medicine 2008, Volume 2, Issue 1,   Pages 45-50 doi: 10.1007/s11684-008-0009-y

Abstract: Developments of digital technology and three-dimensional (3D) reconstruction allowed a precise descriptionThree-dimensional computerized reconstructions of LDM flap structures were conducted from these datasets

Keywords: Digitized     digitized     software     three-dimensional     latissimus    

Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 350-367 doi: 10.1007/s11709-022-0923-0

Abstract: A new rocking constraint device (RCD) is developed for three-dimensional (3D) base-isolated frame structures

Keywords: three-dimensional isolation     rocking behavior     rocking constraint device     replaceable damping component    

Stability of three-dimensional printable foam concrete as function of surfactant characteristics

Frontiers of Structural and Civil Engineering   Pages 935-947 doi: 10.1007/s11709-023-0964-z

Abstract: Extrudability is one of the most critical factors when designing three-dimensional printable foam concreteAlthough many studies have been conducted on traditional foam concrete in this context, studies on three-dimensionalgap, the effects of surfactant characteristics on the stability, extrudability, and buildability of three-dimensionalqualities, such as viscosity and surface tension, to understand the importance of key parameters in three-dimensionalviscosity exceeding 5 mPa·s and surface tension lower than 31 mN/m was recommended to yield stable three-dimensional

Keywords: foam concrete     3D printable concrete     stability     rheology     air void microstructure    

Three-dimensional stability analysis of the dam foundation at Baise

XU Qianjun, LI Xu, CHEN Zuyu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 217-221 doi: 10.1007/s11709-007-0026-y

Abstract: It is usually difficult to determine the actual safety factors of rock masses in an ordinary two-dimensionalA three-dimensional stability analysis method based on the upper-bound theorem was employed to solveindicate that a special overflow dam monolith can be considered to be safe in case of considering the threedimensional effect.

Keywords: ordinary two-dimensional     randomly     monolith     three-dimensional stability     different    

A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 337-352 doi: 10.1007/s11709-018-0467-5

Abstract: A three-dimensional two-level gradient smoothing meshfree method is presented for rainfall induced landslideThe two-level gradient smoothing for meshfree shape function is elaborated in the three-dimensional Lagrangianrainfall seepage and soil motion equations in a nodal integration format, as provides an efficient three-dimensionalThe effectiveness of the present three-dimensional two-level gradient smoothing meshfree method is demonstrated

Keywords: meshfree method     landslide     rainfall     three-dimensional two-level gradient smoothing     nodal integration    

Thermal analysis of lubricated three-dimensional contact bodies considering interface roughness

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0672-8

Abstract: Surface roughness and thermal action are of remarkable importance in the lubrication performance of mechanical components, especially in extreme conditions. However, available studies mainly focus on the full-film lubrication conditions without considering temperature rise and real 3D surface roughness due to the complexity of surface topography and temperature characteristics. Moreover, studies on the interfacial thermal behaviors of 3D rough surface lubricated contact in an extended range of working conditions remain limited. In this paper, a deterministic mixed thermal elastohydrodynamic lubrication model considering real 3D surface roughness and thermal effects is proposed. In this model, pressure and temperature are coupled with each other, the computation of elastic deformation is accelerated through the discrete convolution and fast Fourier transform method, the temperature field is calculated with the column sweeping technique, and the semi-system method is introduced to improve convergence and numerical stability under severe conditions. The model is validated by comparing its results with available published numerical and experimental results. The thermal behaviors of the contact interface are studied in a wide range of working conditions. The influences of surface roughness and thermal effect on lubrication performance are revealed. The results show that the proposed model can be used as a powerful analysis tool for lubrication performance and temperature prediction in various heavy-load, high-speed lubricated components over a wide range of lubrication conditions.

Keywords: thermal elastohydrodynamic lubrication     surface roughness effect     thermal effect     temperature characteristics     severe conditions    

Three-dimensional numerical simulation of the basic pulse tube refrigerator

DING Wenjing, GONG Liang, HE Yaling, TAO Wenquan

Frontiers in Energy 2008, Volume 2, Issue 1,   Pages 48-53 doi: 10.1007/s11708-008-0008-3

Abstract: A three-dimensional physical and numerical model of the basic pulse tube refrigerator (PTR) was developed

Keywords: refrigeration mechanism     three-dimensional     compressible     numerical     understanding    

Fabrication of Si-based three-dimensional microbatteries: A review

Chuang YUE, Jing LI, Liwei LIN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 459-476 doi: 10.1007/s11465-017-0462-x

Abstract:

High-performance, Si-based three-dimensional (3D) microbattery systems for powering micro/nano-electromechanical

Keywords: three-dimensional (3D)     wafer-scale     Si-based anode     micro-LIBs     thin-film deposition    

Three-Dimensional Chip Imaging

Marcus Woo

Engineering 2020, Volume 6, Issue 5,   Pages 485-486 doi: 10.1016/j.eng.2020.03.009

Discrete ordinates method for three-dimensional neutron transport equation based on unstructured-meshes

JU Haitao, WU Hongchun, YAO Dong, XIAN Chunyu

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 179-182 doi: 10.1007/s11708-008-0024-3

Abstract: A discrete ordinates method for a three-dimensional first-order neutron transport equation based on unstructured-meshesA three-dimensional transport calculation code was developed.

Title Author Date Type Operation

Design and calibration of a new high-definition three-dimensional laparoscopic system

Jia TANG,Li-qiang WANG,Bo YUAN,Hong JIANG,Qi-ming ZHU

Journal Article

Development of an In-Situ Laser Machining System Using a Three-Dimensional Galvanometer

Xiao Li, Bin Liu, Xuesong Mei, Wenjun Wang, Xiaodong Wang, Xun Li

Journal Article

A three-dimensional measurement method for binocular endoscopes based on deep learning

Hao YU, Changjiang ZHOU, Wei ZHANG, Liqiang WANG, Qing YANG, Bo YUAN,yuanbo@zju.edu.cn

Journal Article

Inner strain determination of three-dimensional braided preforms with co-braided optical fiber sensors

LI Xianghua, LIU Xiaohui, YUAN Shenfang

Journal Article

Numerical simulation of three-dimensional turbulent flow in multistage axial compressor blade row

JIANG Jian, LIU Bo, WANG Yangang, NAN Xiangyi

Journal Article

Application of three-dimensional digitalized reconstruction of latissimus dorsi myocutaneous flap

PEI Guoxian, ZHANG Yuanzhi, LI Jianwei, JIN Dan, CHEN Jionghao, LI Yanbing, ZHONG Shizhen

Journal Article

Development of rocking constraint device with vertical damping capacity for three-dimensional base-isolated

Journal Article

Stability of three-dimensional printable foam concrete as function of surfactant characteristics

Journal Article

Three-dimensional stability analysis of the dam foundation at Baise

XU Qianjun, LI Xu, CHEN Zuyu

Journal Article

A three-dimensional two-level gradient smoothing meshfree method for rainfall induced landslide simulations

Dongdong WANG, Jiarui WANG, Junchao WU, Junjun DENG, Ming SUN

Journal Article

Thermal analysis of lubricated three-dimensional contact bodies considering interface roughness

Journal Article

Three-dimensional numerical simulation of the basic pulse tube refrigerator

DING Wenjing, GONG Liang, HE Yaling, TAO Wenquan

Journal Article

Fabrication of Si-based three-dimensional microbatteries: A review

Chuang YUE, Jing LI, Liwei LIN

Journal Article

Three-Dimensional Chip Imaging

Marcus Woo

Journal Article

Discrete ordinates method for three-dimensional neutron transport equation based on unstructured-meshes

JU Haitao, WU Hongchun, YAO Dong, XIAN Chunyu

Journal Article