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The role of geospatial in plant pests and diseases: an overview

IOP Conference Series: Earth and Environmental Science 2018年第1期169卷

作者： N M Sabtu N H Idris M H I Ishak TropicalMap Research Group Faculty of Geoinformation and Real Estate Universiti Teknologi Malaysia 81310 Johor Bahru Malaysia Department of Geoinformation Faculty of Geoinformation and Real Estate Teknologi Malaysia 81310 UTM Johor Malaysia Department of Control and Mechatronics Faculty of Electrical Engineering Universiti Teknologi Malaysia 81310 UTM Johor Malaysia

Loss in crop production gives a significant impact to food security. The decreasing in crops production has produced imbalance between the food demand of world population and the global agriculture output. There are many factors that may affect agriculture productivity. Abiotic and biotic constrains including water scarcity, poor soils, unsuitable temperatures and the pests, diseases and weeds attacking crops are among the causes that reduce the productivity of food crops. Hence, these lead to the low efficiencies of input use, suppressed crop output, and ultimately reduced food security. The plant pests, diseases and weeds have given significant impact on plant health and causing a great loss in crop production. Therefore, this paper presents a comprehensive review from the available literatures to provide understanding of the role of geospatial technology in combating plant pests and diseases outbreaks. Geospatial data and technologies including Geographic Information System, remote sensing and Global Navigation Satellite System (GNSS) and have been used in collecting, mapping, analysing the distribution and predicting the events. The geospatial technology has been used from the early tasks of surveying the status of crop health until forecasting when the disease likely to be occurred. Although many big challenges are facing by the global and local agricultures to produce good outputs and to secure the world food population, however the rich of geospatial data and advancement of technologies have playing certain roles, particularly assisting the decision makers in forming strategies for combating various pests and diseases that affecting plant health and food crops.

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Study of wireless charging lane for electric vehicles

Study of wireless charging lane for electric vehicles

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International Symposium on Electrical engineering (ISEE)

作者： Jiongran Xiao Eric Cheng Norbert Cheung Bo Zhang J. F. Pan College of Mechatronics and Control Engineering Shenzhen University Shenzhen Department of Electric Engineering Hong Kong Polytechnic University

ISBN: (纸本)9781509058853

In this paper, an inductive wireless charging lane for electric vehicles is presented. The lane proposed here consists of multiple spiral coils, which are laid down on a track. The specific parameters for the layout of the proposed lane are determined through simulation by the finite element analysis (FEA) software Maxwell. A small prototype of the wireless charging lane is constructed and experimental results show that, a modified, scaled-down model vehicle, with receiver coils attached to the bottom, can move smoothly along the lane without any external power excitation.

关键词： Coils Couplings Inductive charging Receivers Prototypes Electric vehicles Wireless power transmission

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Optimal Dispatch of Electric Vehicle Batteries between Battery Swapping Stations and Charging Stations

Optimal Dispatch of Electric Vehicle Batteries between Batte...

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IEEE Power and Energy Society General Meeting

作者： Xian Zhang Guibin Wang Department of Electrical Engineering Hong Kong Polytechnic University College of Mechatronics and Control Shenzhen University

ISBN: (纸本)9781509041695

Along with the fast development of battery technologies and growing criticism on heavy air pollution caused by traditional automobiles, electric vehicles (EV) draw more attention in these years. The inconvenience of battery charging is the main barrier to the widespread use of EVs, and the EV battery-swapping technology is a promising method to assist overcoming this difficulty eventually because of its flexibility. In this paper, a battery schedule framework is studied to dispatch batteries between battery charging stations (BCS) and battery swapping stations (BSS) efficiently. A two-direction battery dispatch model to reduce the transportation cost is established and solved by PSO method. Moreover, considering the serving ability limitations, the K-means clustering algorithm is utilized to pre-partition the BCS and BSS to make the battery dispatch more efficient and effective. The proposed methods is finally verified by an urban battery logistics case.

关键词： Electric vehicle Battery charging station Battery swapping station Optimal dispatch Electric vehicles Batteries distribution substation BATTERY CHARGING Dispatching Air contamination Blind source separation Transport costs Swap STATIONS

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A Novel Tool Wear Measurement Method in Ultra-precision Raster Milling 4th

A Novel Tool Wear Measurement Method in Ultra-precision Rast...

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4th Asia Pacific Conference on Optics Manufacture, APCOM 2014

作者： Zhang, Guoqing To, Suet College of Mechatronics and Control Engineering Shenzhen University Shenzhen China State Key Laboratory of Ultra-precision Machining Technology Department of Industrial and Systems Engineering The Hong Kong Polytechnic University Kowloon Hong Kong Shenzhen Research Institute of The Hong Kong Polytechnic University Shenzhen China

ISBN: (纸本)9783038356387

Tool wear measurement has drawn a significant of attention in the past decades. However, no research has been found on the investigation of tool wear measurement in ultra-precision raster milling (UPRM) process since it is a relative complex cutting process. In the present study, tool wear characteristics were identified by using cutting chip morphologies and a groove cutting. Tool wear investigation using cutting chips is effective because diamond tool wear characteristics can be directly imprinted on the cutting chip surface. Through the inspection of chip surfaces, the profile and location of the tool fracture can be identified. Also, through the groove cutting, the cutting edge retreat due to the tool flank wear can be identified. In this research, a mathematical model was established to calculate the tool retreat. The experimental result shows that the proposed tool wear investigation method is an effective method. © 2016 Trans Tech Publications Ltd, Switzerland.

关键词： Milling (machining)

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Improvement of Dimensional Accuracy of 3-D Printed Parts using an Additive/Subtractive Based Hybrid Prototyping Approach

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IOP Conference Series: Materials Science and engineering 2017年第1期260卷

作者： A N M Amanullah Tomal Tanveer Saleh Md. Raisuddin Khan Smart Structures System and Control Research Laboratoty Department of Mechatronics Engineering International Islamic University Malaysia Kuala Lumpur 50728 Malaysia

At present, two important processes, namely CNC machining and rapid prototyping (RP) are being used to create prototypes and functional products. Combining both additive and subtractive processes into a single platform would be advantageous. However, there are two important aspects need to be taken into consideration for this process hybridization. First is the integration of two different control systems for two processes and secondly maximizing workpiece alignment accuracy during the changeover step. Recently we have developed a new hybrid system which incorporates Fused Deposition Modelling (FDM) as RP Process and CNC grinding operation as subtractive manufacturing process into a single setup. Several objects were produced with different layer thickness for example 0.1 mm, 0.15 mm and 0.2 mm. It was observed that pure FDM method is unable to attain desired dimensional accuracy and can be improved by a considerable margin about 66% to 80%, if finishing operation by grinding is carried out. It was also observed layer thickness plays a role on the dimensional accuracy and best accuracy is achieved with the minimum layer thickness (0.1 mm).

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Enhancing BEM simulations of a stalled wind turbine using a 3D correction model

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Go Hutomo Taurista Syawitri Tri Kusumadewi Winda Oktavia Ahmad Sabila Herlambang Setiadi Muhamad Faisal Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Ilmi Bumi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia Toyota SO Department Astra International Ltd. Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Project Support and Cost Control Division Indoturbine Ltd. Jakarta Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom Materials Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia

Nowadays wind turbine rotors are usually employed with pitch control mechanisms to avoid deep stall conditions. Despite that, wind turbines often operate under pitch fault situation causing massive flow separation to occur. Pure Blade Element Momentum (BEM) approaches are not designed for this situation and inaccurate load predictions are already expected. In the present studies, BEM predictions are improved through the inclusion of a stall delay model for a wind turbine rotor operating under pitch fault situation of -2.3° towards stall. The accuracy of the stall delay model is assessed by comparing the results with available Computational Fluid Dynamics (CFD) simulations data.

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A manipulator with counterbalancing mechanism for safety in human-robot collaboration

A manipulator with counterbalancing mechanism for safety in ...

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Annual Conference of Industrial Electronics Society

作者： Hyun Min Do Hwi-Su Kim Doo Hyeong Kim Youngsu Son Youngsu Cho Joono Cheong Department of Robotics and Mechatronics Korea Institute of Machinery and Materials Daejeon Korea Department of Control and Instrumentation Engineering Korea University Sejong Korea

Demands for human-robot collaboration in production line has increased and the problem of safety in robot becomes more and more important. This paper presents a manipulator with counterbalancing mechanism to secure safety of a human worker in human-robot collaboration environment by reducing a needed power to drive a manipulator. A counterbalancing torque to cancel out a gravitational torque was generated by a restoring force of spring. Also a control algorithm to minimize the effect of spring on tracking performance was proposed. Experimental results were suggested to verify the performance of the proposed method.

关键词： Torque Force Manipulators Clamps Safety Collision avoidance

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Quantitative graph theory: A new branch of graph theory and network science

arXiv

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arXiv 2017年

作者： Dehmer, Matthias Emmert-Streib, Frank Shi, Yongtang Department of Computer Science Universität der Bundeswehr München Germany Department of Mechatronics and Biomedical Computer Science UMIT Hall in Tyrol Austria Computational Medicine and Statistical Learning Laboratory Department of Signal Processing Tampere University of Technology Finland Institute of Biosciences and Medical Technology Tampere33520 Finland Center for Combinatorics and LPMC-TJKLC Nankai University Tianjin300071 China College of Computer and Control Engineering Nankai University Tianjin300071 China

In this paper, we describe quantitative graph theory and argue it is a new graph-theoretical branch in network science, however, with significant different features compared to classical graph theory. The main goal of quantitative graph theory is the structural quantification of information contained in complex networks by employing a measurement approach based on numerical invariants and comparisons. Furthermore, the methods as well as the networks do not need to be deterministic but can be statistic. As such this complements the field of classical graph theory, which is descriptive and deterministic in nature. We provide examples of how quantitative graph theory can be used for novel applications in the context of the overarching concept network science. Copyright © 2017, The Authors. All rights reserved.

关键词： Complex networks

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Segment-based multi-view stereo matching using cooperative optimization

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Journal of Computational and Theoretical Nanoscience 2016年第7期13卷 4788-4796页

作者： Wang, Daolei Wu, Miaoliang Lim, Kah Bin Kee, Wei Loon College of Energy and Mechanical Engineering Shanghai University of Electric Power Shanghai200090 China Department of Mechanical Engineering Control and Mechatronics Laboratory National University of Singapore Singapore117576 Singapore

In this paper, the disparity map is extracted by the method of segment-based stereo matching using cooperative optimization from multi-view. The Mean-Shift method is employed to segment the reference image in the first step of the algorithm, this is to ensure our method to precisely localize the depth boundaries and correctly estimate the large untextured regions. Next, the Self-Adaptation dissimilarity algorithm is utilized to estimate the initial disparity of multi-view. Then the disparity sets of multi-view are merged into one using the disparity plane estimation, which is solved by Singular Value Decomposition (SVD). In order to ensure reliable pixel sets for the segment, the rules are built to filter out outliers. Finally, using the cooperative optimization for a novel energy function is subsequently formulated to refine the disparity map. The experimental results are presented to show the effectiveness of our proposal methods. © 2016 American Scientific Publishers All rights reserved.

关键词： Singular value decomposition

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The next generation heterodyne interferometric grating encoder system for multi-dimensional displacement measurement of a wafer stage 32

The next generation heterodyne interferometric grating encod...

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32nd Annual Meeting of the American Society for Precision engineering, ASPE 2017

作者： Wang, Lei J. Zhang, Ming Zhu, Yu Ye, Wei N. Ding, Si Q. Jia, Z. Xia, Y. State Key Laboratory of Tribology Beijing Key Lab of Precision/Ultraprecision Manufacturing Equipments and Control Department of Mechanical Engineering Tsinghua University Beijing100084 China Beijing U-precision Tech Co. Ltd. Beijing100084 China School of Mechatronics Engineering University of Electronic Science and Technology Chengdu611731 China

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