Proceedings of the 2018 10th International Conference on Computer and Automation Engineering最新文献_第3页

The Pallet Loading Method of Single Category Cargo Based on Railway Containerized Transport 基于铁路集装箱运输的单类货物托盘装载方法

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3193010

K. Zhou

引用次数: 1

A Computational Study of Convection Currents of Liquid in a High Pressure Processing (HPP) using CFD 高压加工(HPP)中液体对流的CFD计算研究

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192992

Ghani Albaali

{"title":"A Computational Study of Convection Currents of Liquid in a High Pressure Processing (HPP) using CFD","authors":"Ghani Albaali","doi":"10.1145/3192975.3192992","DOIUrl":"https://doi.org/10.1145/3192975.3192992","url":null,"abstract":"The profiles of temperature, velocity and pressure at the beginning of liquid compression under extreme High Pressure (HP) in a 3D cylinder are simulated and presented in this work. The computational domain is a cylindrical basket with 38 mm diameter and 290 mm height. These dimensions are same with those used in the experimental work for the HPP unit used in this work. The simulation has been done on direct processing of water as a liquid model at 500 MPa pressure level and with 970 s holding time. A Computational Fluid Dynamics (CFD) package (PHOENICS) is used to solve the governing equations of continuity, momentum and energy. The CFD package is based on a Finite Volume Method (FVM) of solution. The results of the simulation shows the influence of both forced and free convection flow, on the distribution o temperature in the liquid at the early stages of compression. The convection formation is created due to the differences in velocities between the pumping fluid passing the cylinder inlet at 10-2 to 10-3 m/s and the treatment chamber velocity at 10-8-10-9 m/s. The calculated temperature at different cylinder heights are validated and found of good agreement with experimentally work measured.","PeriodicalId":128533,"journal":{"name":"Proceedings of the 2018 10th International Conference on Computer and Automation Engineering","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125200230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved Coordinate Update Method for the Identification of Adaptive Hinging Hyperplanes Model 一种改进的自适应铰链超平面模型坐标更新识别方法

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192985

Qinghua Tao, Jun Xu, Shuning Wang, Li Li

{"title":"An Improved Coordinate Update Method for the Identification of Adaptive Hinging Hyperplanes Model","authors":"Qinghua Tao, Jun Xu, Shuning Wang, Li Li","doi":"10.1145/3192975.3192985","DOIUrl":"https://doi.org/10.1145/3192975.3192985","url":null,"abstract":"Adaptive hinging hyperplanes (AHH) is a popular continuous piecewise linear (CPWL) model. It has been proved that any continuous nonlinear function can be approximated by a CPWL function with arbitrary precision. The existing identification of AHH simply traverses all the dimensions on the pre-given splitting points to select the best, which fails to consider all the parameters synchronously and the randomness in the splitting, thus the identified model may not be optimal. In this paper, we propose an improved method to identify AHH model with coordinate update strategy. We first use the existing identification method of AHH to initially obtain a basic model structure, and afterwards alternatively optimize the parameters to improve accuracy. Specifically, to explore the interactive and global effects among all the nonlinear parameters, adaptive block coordinate DIRECT (ABCD) algorithm is employed to simultaneously optimize the nonlinear parameters, while the linear parameters can be calculated by least squares (LS) method. Besides, the proposed method is promising to conduct extensions to identify different CWPL models or other nonlinear models even with various error criteria. Numerical experiments show that the proposed method improves the accuracy and stability in identifying AHH and it can even achieve higher accuracy with simpler model structure.","PeriodicalId":128533,"journal":{"name":"Proceedings of the 2018 10th International Conference on Computer and Automation Engineering","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128589869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-Invasive Glucose Meter for Android-Based Devices android设备的无创血糖仪

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192979

M. A. Malbog, N. Linsangan

引用次数: 6

Optimal Power Allocation and Precoding Design for Channel Estimation in OFDM System OFDM系统中信道估计的最优功率分配和预编码设计

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192996

Qingbo Wang, Gaoming Huang, Gaoqi Dou, Jun Gao, Jiali Liu

引用次数: 0

An ORB Feature Matching Algorithm for Mobile Devices 移动设备ORB特征匹配算法

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3193021

Jia-min Liu, Jin-Song Yu, Chudi Wang, Xia Zhang

引用次数: 2

Tree-based Classification to Users' Trustworthiness in OSNs 基于树形分类的osn中用户可信度分类

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3193004

Rouzbeh Nabipourshiri, Bilal Abu-Salih, P. Wongthongtham

引用次数: 11

Modeling and GS-PID Control of the Quad-Rotor UAV 四旋翼无人机建模与GS-PID控制

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192990

Jinglai Qiao, Zhixiang Liu, Youmin Zhang

引用次数: 2

Locomotion, Non-Isometric Mapping and Distance Perception in Virtual Reality 虚拟现实中的运动、非等距映射和距离感知

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3193022

S. Schneider, Philipp Maruhn, K. Bengler

{"title":"Locomotion, Non-Isometric Mapping and Distance Perception in Virtual Reality","authors":"S. Schneider, Philipp Maruhn, K. Bengler","doi":"10.1145/3192975.3193022","DOIUrl":"https://doi.org/10.1145/3192975.3193022","url":null,"abstract":"Virtual reality has become a common tool for investigating pedestrian behaviour in complex traffic situations. To ensure valid results, naturalistic depth perception is crucial. Despite a number of studies, influencing factors like walking experience still have not fully been examined, and recent advancements in associated technologies require constant re-evaluation of previous findings. The present study investigated the influence of walking on distance perception in a high fidelity virtual reality pedestrian simulation. Twenty-nine subjects verbally estimated distances corresponding to 3, 3.5 and 4 metres in the virtual world, either based solely on visual perception or after walking to the target. Within the latter condition, the virtual distance travelled was manipulated by translation gains (ratio between physically travelled and visually perceived distance) ranging from 0.9 to 1.3. Results confirmed previous findings of distances being generally underestimated. Walking significantly improved estimation accuracy, especially when a walking trial was preceded by a purely visual estimate. Within the walking condition, lower translation gains significantly increased the estimated distance, thus improving the estimation performance.","PeriodicalId":128533,"journal":{"name":"Proceedings of the 2018 10th International Conference on Computer and Automation Engineering","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128423580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Large Scale Object Measurement Based on Data Fusion of Stereo Camera's Multi-viewpoint Images 基于立体相机多视点图像数据融合的大尺度目标测量

Proceedings of the 2018 10th International Conference on Computer and Automation Engineering Pub Date : 2018-02-24 DOI: 10.1145/3192975.3192995

Ding Shaowen, Zhang Xiaohu, Wang Jie, Zhang Hongliang, Z. Lijun

{"title":"Large Scale Object Measurement Based on Data Fusion of Stereo Camera's Multi-viewpoint Images","authors":"Ding Shaowen, Zhang Xiaohu, Wang Jie, Zhang Hongliang, Z. Lijun","doi":"10.1145/3192975.3192995","DOIUrl":"https://doi.org/10.1145/3192975.3192995","url":null,"abstract":"Multi-view photogrammetry is a method to obtain the spatial position of the target points in the field of view by fusing image data from multi-viewpoint, it's suitable for the measurement of large scale object's surface dimension parameters, which may under the circumstance of occlusion. The multi-view photogrammetry based on single camera needs to arrange scale datum into the measurement area, image acquisition process is complex, and requires a high overlap ratio between adjacent images. In this paper, a method of multi-view photogrammetry using stereo camera is presented, this method not only inherits the advantages of large measurement range in multi-view reconstruction, but also does not need to arrange scale datum, and the image acquisition process is simpler. Firstly the internal parameters and solid connection of two cameras installed on the fixed rod are obtained according to camera calibration. Then we use the stereo camera to acquire the images of the area to be measured and get the spatial point cloud by binocular intersection. Calculate the transformation relation of the coordinate system of point cloud in adjacent viewpoint by the method of pose estimation, and transform the camera's parameters and point cloud's coordinate of each moment to the specified coordinate system. The position and pose of the camera and the coordinate of point cloud are optimized by using bundle adjustment, the size parameters and deformation information can be calculated from the point cloud coordinates. The test results show that in the range of 5 meters the measurement's error is 3mm, the average error is 1mm. This method is suitable for the measurement of large scale object and scene, the algorithm is stable and reliable.","PeriodicalId":128533,"journal":{"name":"Proceedings of the 2018 10th International Conference on Computer and Automation Engineering","volume":"247 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128653691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0