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What if the Global Positioning System Didn’t Work?

Mitch Leslie

Engineering 2019, Volume 5, Issue 6,   Pages 985-986 doi: 10.1016/j.eng.2019.10.007

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The Global Positioning System (GPS): Creating Satellite Beacons in Space, Engineers Transformed Daily

Peter Weiss

Engineering 2021, Volume 7, Issue 3,   Pages 290-303 doi: 10.1016/j.eng.2021.02.001

Keywords： EngineeringAchievements    

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Discussion on the Agricultural Information Science——On Construction of Agricultural Information System

Wang Renchao,Huang Jingfeng,Shi Zhou,Wang Ke

Strategic Study of CAE 2000, Volume 2, Issue 6,   Pages 80-83

Abstract:

Based on “On Construction of Agricultural Information System Engineering”，the developmentThe agricultural information science was defined as an agricultural science system which is based ontechnique, global positioning system technique and computer net system technique.technology, geographic information system technology, global positioning system technology and computernet system technology and its function were introduced simply.

Keywords： agricultural information science     agricultural information system technology     remote sensing technology     geographic information system technology     global positioning system technology     computer net technology    

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Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision

Wu Nanxing,Hu Rufu,Sun Qinghong

Strategic Study of CAE 2004, Volume 6, Issue 9,   Pages 46-49

Abstract:

Rigidity of feed system with ball screw in NC lathe has a major influence on loss of momentum andpositioning precision.Based on the spring mechanics model and the quality of the feed system, the analytic formulation forTheoretic basis for designing the structure, reducing loss of momentum and increasing positioning precisionof feed system has been provided.

Keywords： NC lathe     rigidity     loss of momentum     positioning precision    

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Detection of the Pine Wilt Disease Tree Candidates for Drone Remote Sensing Using Artificial Intelligence Techniques Article

Mutiara Syifa, Sung-Jae Park, Chang-Wook Lee

Engineering 2020, Volume 6, Issue 8,   Pages 919-926 doi: 10.1016/j.eng.2020.07.001

Abstract: Furthermore, compared the accuracy of two types of Global Positioning System (GPS) data, collected using

Keywords： Pine wilt disease     Drone remote sensing     Artificial neural network     Support vector machine     Global positioningsystem    

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The hoisting techniques of huge segments of the steel tower

Zhang Ping,Xiao Wenfu,Huang Tao,Jiang Jian,Cai Wei

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 58-62

Abstract:

Taizhou Changjiang River Highway Bridge adopts a three-tower, two-span layout for the first time in the world. The longitudinal shape of the middle tower is herringbone, and the steel gallows frame is adopted in the cross direction. This paper describes the installation, locating, and adjusting construction techniques of the huge segments including the selection of hoisting equipment.

Keywords： huge segments of steel tower     lifting     positioning     adjusting     precision control     positioning system    

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Web-based construction equipment fleet management system: cost-effective global and local allocation

Hakob AVETISYAN, Miroslaw SKIBNIEWSKI

Frontiers of Engineering Management 2017, Volume 4, Issue 1,   Pages 76-83 doi: 10.15302/J-FEM-2017012

Abstract: Over the last two decades, construction contractors have been gradually making more investments in construction equipment to meet their needs associated with increasing volumes of construction projects. At present, from an operational perspective, almost all contractors pay more attention to maintaining their equipment fleets in well-sustained workable conditions and having a high accessibility of the necessary equipment pieces. However, such an approach alone is not enough to maintain an efficient and sustainable business. In particular, for large-scale construction companies that operate in multiple sites in the U.S. or overseas, the problem extends to an optimal allocation of available equipment. Given the current state of the construction industry in the U.S., this problem can be solved by geographically locating equipment pieces and then wisely re-allocating them among projects. Identifying equipment pieces geographically is a relatively easy task. The difficulty arises when informed decision-making is required for equipment allocation among job sites. The actual allocation of equipment should be both economically feasible and technologically preferable. To help in informed decision-making, an optimization model is developed as a mixed integer program. This model is formed based on a previously successfully developed decision-support model for construction equipment selection. The proposed model incorporates logical strategies of supply chain management to optimally select construction equipment for any construction site while taking into account the costs, availability, and transportation-related issues as constraints. The model benefits those responsible for informed decision-making for construction equipment selection and allocation. It also benefits the owners of construction companies, owing to its cost-minimization objective.

Keywords： Construction equipment     Equipment assignment optimization     Web-based asset management    

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Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 3, doi: 10.1007/s11783-021-1471-x

Abstract:

• Hg bioaccumulation by phytoplankton varies among aquatic ecosystems.

Keywords： Plankton     Hg bioaccumulation     Physiological characteristics     A cross-system analysis     Nutrient compositions     Global data set    

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Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision positioning

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 255-272 doi: 10.1007/s11465-019-0538-x

Abstract: Nano-precision positioning stages are characterized by rigid-flexible coupling systems.A systematic approach to modeling the dynamic accuracy of a nano-precision positioning stage is developedin this work by integrating a multi-rigid-body dynamic model of the mechanical system and measurementsystem models.The software framework is then applied to the design of a nano-precision positioning stage used in a

Keywords： nano-precision positioning stage     analysis and design     structural and dynamic parameters     dynamic accuracy    

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Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope

Juan Carlos JáUREGUI, Eusebio E. HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 252-260 doi: 10.1007/s11465-013-0249-7

Abstract:

The pose accuracy of a parallel robot is a function of the mobile platform posture. Thus, there is no a single value of the robot’s accuracy. In this paper, two novel methods for estimating the accuracy of parallel robots are presented. In the first method, the pose accuracy estimation is calculated by considering the propagation of each error, i.e., error variations are considered as a function of the actuator’s stroke. In the second method, it is considered that each actuator has a constant error at any stroke. Both methods can predict pose accuracy of precise robots at design stages, and/or can reduce calibration time of existing robots. An example of a six degree-of-freedom parallel manipulator is included to show the application of the proposed methods.

Keywords： pose errors     error estimation     parallel robot     radio telescopes    

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Strategic Analysis of Global Energy Transition and China’s Energy Revolution

Zhao Yunlong,Kong Geng,Zhuoran,Ma Linwei,Ni Weidou

Strategic Study of CAE 2021, Volume 23, Issue 1,   Pages 15-23 doi: 10.15302/J-SSCAE-2021.01.005

Abstract: text-align: justify;">Energy revolution is important for realizing the coordinated development of energy systemBased on this, the global energy transition and China’s energy revolution strategy are analyzedfrom four aspects: energy challenge, energy system, energy governance, and energy market as well asMeanwhile, lack of strong energy governance has led to a low progress of the global energy transitionChina is expected to play a more active role in promoting global energy transition.

Keywords： energy transition     global energy system     China’s energy system     sustainable development     energy system    

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Analysis and control of micro-stepping characteristics of ultrasonic motor

Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 585-599 doi: 10.1007/s11465-019-0577-3

Abstract: operation and nuclear magnetic resonance, which require a precise compact-structure non-magnetization positioning

Keywords： ultrasonic motor     stepping characteristics     pulse number control     synchronous acquisition system     precisepositioning    

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Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 2,   Pages 265-278 doi: 10.1007/s11465-017-0453-y

Abstract:

Most of the XY positioning stages proposed in previous studies are mainly designed byIn this study, a 2-degree-of-freedom linear compliant positioning stage (LCPS) is developed by mechatronicdesign to balance the interacting performance indicators and realize the desired positioning stage.

Keywords： mechatronic design     linear compliant positioning stage     large travel range     high out-of-plane payload capacity    

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Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 316-321 doi: 10.1007/s11465-010-0021-1

Abstract: of remote calibration mode based on material object reference, a new model of a remote calibration systemThe key technology of some key problems for the remote calibration system is particularly discussed,including the time and frequency benchmark receiving module based on global positioning system (GPS),The results show that the system possesses some characteristics, such as high precision, good versatility

Keywords： remote calibration     in-place benchmark     frequency comparison     global position system (GPS)    

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The realization of automatic positioning of crane in high precise in the storehouse for nuclear waste

Luan Xiuchun,Han Weishi,Wang Junling,Yang Aiguang

Strategic Study of CAE 2010, Volume 12, Issue 3,   Pages 45-50

Abstract:

This paper sets forth the realization of automatic positioning of cranestorehouse for nuclear waste, including the hardware configuration and software configuration of the control system

Keywords： nuclear waste     crane     automatic control     positioning    

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Title Author Date Type Operation

What if the Global Positioning System Didn’t Work?

Mitch Leslie

Journal Article

The Global Positioning System (GPS): Creating Satellite Beacons in Space, Engineers Transformed Daily

Peter Weiss

Journal Article

Discussion on the Agricultural Information Science——On Construction of Agricultural Information System

Wang Renchao,Huang Jingfeng,Shi Zhou,Wang Ke

Journal Article

Influence of Rigidity of Feed System With Ball Screw in NC Lathe on Positioning Precision

Wu Nanxing,Hu Rufu,Sun Qinghong

Journal Article

Detection of the Pine Wilt Disease Tree Candidates for Drone Remote Sensing Using Artificial Intelligence Techniques

Mutiara Syifa, Sung-Jae Park, Chang-Wook Lee

Journal Article

The hoisting techniques of huge segments of the steel tower

Zhang Ping,Xiao Wenfu,Huang Tao,Jiang Jian,Cai Wei

Journal Article

Web-based construction equipment fleet management system: cost-effective global and local allocation

Hakob AVETISYAN, Miroslaw SKIBNIEWSKI

Journal Article

Characteristics of plankton Hg bioaccumulations based on a global data set and the implications for aquatic

Journal Article

Comprehensive analysis of the influence of structural and dynamic parameters on the accuracy of nano-precision positioning

Chengyuan LIANG, Fang YUAN, Xuedong CHEN, Wei JIANG, Lizhan ZENG, Xin LUO

Journal Article

Kinematic calibration of precise 6-DOF stewart platform-type positioning systems for radio telescope

Juan Carlos JáUREGUI, Eusebio E. HERNáNDEZ, Marco CECCARELLI, Carlos LóPEZ-CAJúN, Alejandro GARCíA

Journal Article

Strategic Analysis of Global Energy Transition and China’s Energy Revolution

Zhao Yunlong,Kong Geng,Zhuoran,Ma Linwei,Ni Weidou

Journal Article

Analysis and control of micro-stepping characteristics of ultrasonic motor

Ning CHEN, Jieji ZHENG, Xianliang JIANG, Shixun FAN, Dapeng FAN

Journal Article

Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane

Hua LIU, Xin XIE, Ruoyu TAN, Lianchao ZHANG, Dapeng FAN

Journal Article

Remote calibration system for frequency based on in-place benchmark

Xiaobin HONG, Guixiong LIU, Zhuokui WU, Xipeng DU,

Journal Article

The realization of automatic positioning of crane in high precise in the storehouse for nuclear waste

Luan Xiuchun,Han Weishi,Wang Junling,Yang Aiguang

Journal Article