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Upgrade and Organized Innovation of China’s NC Generation Products: A Case Study in Quanzhou City

Wei Feng,Zhou Yuan and Xue Lan

Strategic Study of CAE 2016, Volume 18, Issue 6, Pages 110-116 doi: 10.15302/J-SSCAE-2016.06.022

Abstract:

The "Numerical Control (NC) Generation Innovation Project" aims to apply NC technologyThis paper takes the update and upgrade of NC equipment in Quanzhou city as a case study.Focusing on practical experience with the NC Generation Innovation Project within the framework of innovationgovernance, it discusses a new generation of "organized innovation" generated by theGeneration Innovation Project, by playing a "skillful deflection" role, has enabled the

Keywords： NC generation generic technology technology diffusion innovation governance organized innovation

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Dynamic characteristics of an NC table with phase space reconstruction

Linhong WANG, Bo WU, Runsheng DU, Shuzi YANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2, Pages 179-183 doi: 10.1007/s11465-009-0018-9

Abstract: The dynamic properties of a numerical control (NC) table directly interfere with the accuracy and surfacereconstruction, the correlation dimension, maximum Lyapunov exponent, and dynamic time series measured from the NCThe chaotic characteristic of the dynamic properties of the NC table is revealed via various approachesTherefore, an NC table is a nonlinear dynamic system.

Keywords： NC table chaotic characteristic phase-space reconstruction correlation dimension maximum Lyapunov exponent

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Kinematic error separation on five-axis NC machine tool based on telescoping double ball bar

Min WANG, Jianzhong HU, Tao ZAN

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 431-437 doi: 10.1007/s11465-010-0110-1

Abstract: Based on this model, a new method for the kinematic error separation in five-axis numerical control (NCbar is used to measure the relative distance between the spindle and the worktable in the motion of NCmeasured by telescoping double ball bar is substituted into the model to obtain kinematic error of NC

Keywords： error modeling error separation telescoping double ball bar five-axis numerical control (NC) machining

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Dynamic characteristics of NC table with SVD

WANG Linhong, WU Bo, DU Runsheng, YANG Shuzi

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4, Pages 385-391 doi: 10.1007/s11465-008-0052-z

Abstract: SVD (singular value decomposition) method to study dynamic characteristics of a numerical control (NCAcceleration signals of the NC table at three directions are tested; the singular spectrum of the signals

Keywords： Acceleration vibration source chaotic energy dynamic

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Kinematic simulation of a parallel NC machine tool in the manufacturing process

ZHANG Jian-min, FAN Yu, JIA Dong-yun, ZOU Qiu-ling, WU Ying

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 2, Pages 173-176 doi: 10.1007/s11465-006-0020-4

Abstract: Aimed at enhancing the research status of parallel machine tools, this paper introduces the structure of a 6-SPS parallel machine tool and explains the application significance of the kinematic simulation of the manufacturing pro

Keywords： 6-SPS kinematic simulation manufacturing application significance

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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 and

Keywords： NC lathe rigidity loss of momentum positioning precision

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Detecting interaction/complexitywithin crowd movements using braid entropy Research Papers

Murat AKPULAT, Murat EKİNCİ

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 6, Pages 849-861 doi: 10.1631/FITEE.1800313

Abstract:

The segmentation of moving and non-moving regions in an image within the field of crowd analysis is a crucial process in terms of understanding crowd behavior. In many studies, similar movements were segmented according to the location, adjacency to each other, direction, and average speed. However, these segments may not in turn indicate the same types of behavior in each region. The purpose of this study is to better understand crowd behavior by locally measuring the degree of interaction/complexity within the segment. For this purpose, the flow of motion in the image is primarily represented as a series of trajectories. The image is divided into hexagonal cells and the finite time braid entropy (FTBE) values are calculated according to the different projection angles of each cell. These values depend on the complexity of the spiral structure that the trajectories generated throughout the movement and show the degree of interaction among pedestrians. In this study, behaviors of different complexities determined in segments are pictured as similar movements on the whole. This study has been tested on 49 different video sequences from the UCF and CUHK databases.

Keywords： Crowd behavior Motion segmentation Motion entropy Crowd scene analysis Complexity detection Braid entropy

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New evaluation method on the precision of NC machine tools

Zhao Wanhua,Zhang Jun,Liu Hui,Yang Xiaojun

Strategic Study of CAE 2013, Volume 15, Issue 1, Pages 93-98

Abstract:

The performance of computerized numerical control (CNC) machine tool is evaluated by the traditional positioning error and the positioning repeatability, which is in quasi static and cannot reflect the precision of machine tool in the process of movement and machining. In this paper, a novel precision evaluation method which takes the dynamic precision as index is proposed for high-speed machine tool. The precision of machine tool is described through the consistence of the actual trajectory and the ideal command. The specific evaluation index of dynamic precision is provided. Meanwhile, the measure method of evaluation index is put forward. It can be obtained that this new evaluation method of machine tool precision can evaluate the quality of key performance in CNC machine tool systematically and roundly.

Keywords： NC machine tools dynamic precision evaluation index impact factors

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Behavior of aqueous stable colloidal nano-C

Jing HUO,Ye YU,Ling GE,Bo ZHANG,Yiliang HE

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2, Pages 197-205 doi: 10.1007/s11783-014-0624-6

Abstract: This work examined the behavior of aqueous stable colloidal nano-C (nC ) aggregates under differentResults show that the nC aggregates became more dispersive and restored the capability of generating, and the kinetic rate constant of generating the singlet oxygen for nC aggregates was improved.The mean size of nC aggregates in the presence of TX100 had no obvious variations when the pH rangedCollective data suggest that variations in physicochemical properties of nC aggregates are strongly

Keywords： nano-C₆₀ (nC₆₀) aggregates photochemical reactivity artificial biological membrane

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NC flame pipe cutting machine tool based on open architecture CNC system

Xiaogen NIE, Yanbing LIU

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2, Pages 147-152 doi: 10.1007/s11465-009-0025-x

Abstract: Based on the analysis of the principle and flame movement of a pipe cutting machine tool, a retrofit NCThe paper emphasizes on the NC system structure and the method for directly creating the NC file accordingFurther, the paper develops the program and sets up the open and module NC system.

Keywords： flame pipe cutting flame incision tracks CNC open architecture CNC system

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Studies on advanced water-cooled reactors beyond generation III for power generation

CHENG Xu

Frontiers in Energy 2007, Volume 1, Issue 2, Pages 141-149 doi: 10.1007/s11708-007-0018-6

Abstract: power program motivates the country s nuclear community to develop advanced reactor concepts beyond generationselection criteria, two new types of water-cooled reactors are recommended for future Chinese nuclear power generationIt is a logical extension of the generation III PWR technology in China.

Keywords： Chinese situation selection generation water-cooled feasibility

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Synthesis and photoconductivities of bisazo charge generation materials

ZHAO Qian, WANG Shirong, LI Xianggao, HE Lili

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3, Pages 330-334 doi: 10.1007/s11705-008-0061-9

Abstract: Using these bisazo compounds as charge generation materials and CT-191(2-methyl-4-(-dibenzyl)aminobenzoaldehyde

Keywords： -6-aminobenzoxazole 4′-aminophenyl transportation xerographic performance generation

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Self-generation of machining precision and its realization in lapping of super precision solid balls

ZHANG Bopeng

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3, Pages 348-353 doi: 10.1007/s11465-008-0065-7

Abstract: This paper presents the principle of self-generation of machining precision by explaining its basic conceptA self-generation system is a kind of system with self-organization capability.The self-generation of machining precision for solid balls with super precision is emphatically explainedNecessary conditions for achieving self-generation of machining precision are given.of errors, self-generation of precision, and self-generating system for the given.

Keywords： self-generation necessary self-regulation capability viewpoint Necessary

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A review on technologies with electricity generation potentials using liquified natural gas regasification

Frontiers in Energy 2023, Volume 17, Issue 3, Pages 332-379 doi: 10.1007/s11708-023-0863-y

Abstract: In modern times, worldwide requirements to curb greenhouse gas emissions, and increment in energy demand due to the progress of humanity, have become a serious concern. In such scenarios, the effective and efficient utilization of the liquified natural gas (LNG) regasification cold energy (RCE), in the economically and environmentally viable methods, could present a great opportunity in tackling the core issues related to global warming across the world. In this paper, the technologies that are widely used to harness the LNG RCE for electrical power have been reviewed. The systems incorporating, the Rankine cycles, Stirling engines, Kalina cycles, Brayton cycles, Allam cycles, and fuel cells have been considered. Additionally, the economic and environmental studies apart from the thermal studies have also been reviewed. Moreover, the discussion regarding the systems with respect to the regassification pressure of the LNG has also been provided. The aim of this paper is to provide guidelines for the prospective researchers and policy makers in their decision making.

Keywords： liquified natural gas cold energy power generation

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Performance of a bi-layer solar steam generation system working at a high-temperature of top surface

Jinxin ZHONG, Congliang HUANG

Frontiers in Energy 2023, Volume 17, Issue 1, Pages 141-148 doi: 10.1007/s11708-021-0725-4

Abstract: Many efforts have been focused on enhancing the vapor generation in bi-layer solar steam generation systemsstudied although the high-temperature vapor has a wide use in medical sterilization and electricity generation

Keywords： solar steam generation solar energy numerical method porous material