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The Nurturing Path of “Specialized, Elaborative, Characteristic” Little Giant Enterprises: Study on Southern

Zhang Rui,Shi Xiaopeng and Chen Yingwu

Strategic Study of CAE 2017, Volume 19, Issue 5, Pages 97-102 doi: 10.15302/J-SSCAE-2017.05.017

Abstract:

Accelerating the development of "specialized, elaborative, characteristic" little giant (SECLG) enterprises is essential in order to enhance the overall competitivenessis focused on the southern Jiangsu province, which is an important agglomeration area of China's SECLGThis paper could serve as a reference for SECLG enterprises nurturing policy-making.

Keywords： “specialized elaborative characteristic” little giant (SECLG) industrial base policy system

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The Formation of the Concept “Open Complex Giant System”

Lu Mingsen

Strategic Study of CAE 2004, Volume 6, Issue 5, Pages 17-23

Abstract:

On the basis of the analysis of the formation background of the concept “open complex giantletters published by Academician Qian Xuesen, this paper studies emphatically the abstract process of giantsystem → complex giant system → open complex giant system， introduces briefly the basic contentof the theory of open complex giant system, and expounds that the formation of this theory has significance

Keywords： giant system complex giant system open complex giant system Meta-synthesis system science noetic science

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Gene expression disparity in giant cell tumor of bone

Xiaohua PAN, Shuhua YANG, Deming XIAO, Yong DAI, Lili REN

Frontiers of Medicine 2009, Volume 3, Issue 1, Pages 49-56 doi: 10.1007/s11684-009-0012-y

Abstract: The aim of this paper was to study the differential gene expression of giant cell tumor of bone (GCTB

Keywords： giant cell tumor of bone gene microarray cDNA

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Signal separation technology for diphase opposition giant magnetostrictive self-sensing actuator

Xinhua WANG, Shuwen SUN, Jian ZHEN, Qianyi YA, Deguo WANG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2, Pages 176-183 doi: 10.1007/s11465-010-0001-5

Abstract: The structure and principle of a new type of a diphase opposition giant magnetostrictive self-sensingDynamic balance separation technology for the giant magnetostrictive self-sensing actuator comes true

Keywords： giant magnetostrictive material (GMM) self-sensing actuator least means square (LMS) self-adapting algorithm

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Analysis of the dynamic hysteresis characteristic of finger seal

LEI Yanni, CHEN Guoding

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1, Pages 32-36 doi: 10.1007/s11465-007-0005-y

Abstract: The research about hysteresis characteristic of finger seal (FS), which was carried out based on theA mass spring damper dynamics model of FS system was proposed and the hysteresis characteristic of theThis work shows that the dynamics characteristic analysis of the FS is necessary and the dynamics model

Keywords： FS necessary hysteresis characteristic optimization spring

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Analyses of the seismic responses of soil layers with deep deposits

LOU Menglin, LI Yuchun, LI Nansheng

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2, Pages 188-193 doi: 10.1007/s11709-007-0021-3

Abstract: The elasticity of the solid rock has little influence on the seismic response of the deep soil layer.

Keywords： little influence layer calculation Shanghai dynamic

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A giant Müllerian duct cyst in the perineum: a case report

Xianghu Meng, Jihong Liu, Xiao Yu, Shaogang Wang, Cong Liu, Zhangqun Ye

Frontiers of Medicine 2012, Volume 6, Issue 4, Pages 440-443 doi: 10.1007/s11684-012-0222-6

Abstract:

The authors present a case report of a giant Müllerian duct cyst in the perineum.X-ray film of the pelvis showed a giant soft-tissue shadow of high density in the perineum.

Keywords： Müllerian duct cyst clinical symptoms diagnosis

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The core principles of giant projects decisionmaking

Ren Hong,Zhang Wei,Zeng Deheng

Strategic Study of CAE 2011, Volume 13, Issue 8, Pages 94-96

Abstract: development, the thoughtway of engineering philosophy is adopted to explore the decision-making problems of giantIt is proposed to use new ideas and new ways to solve complex giant projects decision-making, and a modelof giant projects decision-making is built, the main contents of which are "Three Core Principles" of giant projects decision-making, that is, whether the project could last as long as possible

Keywords： giant projects engineering philosophy decisionmaking principles

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Flow characteristic and wastewater treatment performance of a pilot-scale airlift oxidation ditch

Hongtao PANG, Hanchang SHI, Huiming SHI,

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 4, Pages 470-476 doi: 10.1007/s11783-009-0143-z

Abstract: diffuser and baffle as aerator was operated in a wastewater treatment plant (WWTP) to investigate its flow characteristic

Keywords： airlift oxidation ditch flow characteristic wastewater treatment

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Geometrical nonlinear deformation model and its experimental study on bimorph giant magnetostrictive

LIU Wei, JIA Zhenyuan, WANG Fuji, ZHANG Yongshun, GUO Dongming

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3, Pages 313-317 doi: 10.1007/s11465-008-0048-8

Abstract: The geometrical nonlinearity of a giant magnetostrictive thin film (GMF) can be clearly detected under

Keywords： magnetostrictive nonlinear magnetostriction inaccurate geometrical nonlinearity

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Weak characteristic information extraction from early fault of wind turbine generator gearbox

Xiaoli XU, Xiuli LIU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3, Pages 357-366 doi: 10.1007/s11465-017-0423-4

Abstract:

Given the weak early degradation characteristic information during early fault evolution in gearboxA weak characteristic information extraction based on µ-SVD and local mean decompositionExperimental results show that this method can significantly weaken signal noise, effectively extract the weak characteristic

Keywords： wind turbine generator gearbox µ-singular value decomposition local mean decomposition weak characteristic

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Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 840-854 doi: 10.1007/s11465-021-0643-5

Abstract: In this paper, an improved fractal interpolation model is proposed to reconstruct the surface topography of composite hole wall. This model adopts the maximum positive deviations and maximum negative deviations between the measured values and trend values to determine the contraction factors. Hole profiles in 24 directions are measured. Fractal parameters are calculated to evaluate the measured surface profiles. The maximum and minimum fractal dimension of the hole wall are 1.36 and 1.07, whereas the maximum and minimum fractal roughness are 4.05 × 10 ⁻⁵ and 4.36 × 10 ⁻¹⁰ m, respectively. Based on the two-dimensional evaluation results, three-dimensional surface topographies in five typical angles (0°, 45°, 90°, 135°, and 165°) are reconstructed using the improved model. Fractal parameter D _s and statistical parameters Sa, Sq, and Sz are used to evaluate the reconstructed surfaces. Average error of D _s, Sa, Sq, and Sz between the measured surfaces and the reconstructed surfaces are 1.53%, 3.60%, 5.60%, and 9.47%, respectively. Compared with the model in published literature, the proposed model has equal reconstruction effect in relatively smooth surface and is more advanced in relatively rough surface. Comparative results prove that the proposed model for calculating contraction factors is more reasonable.

Keywords： surface topography fractal evaluation fractal interpolation reconstruction composite

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Operating characteristic analysis on the ultra-thin low temperature floor-heating system

Hualing ZHANG, Xiaopeng SONG

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 2, Pages 127-132 doi: 10.1007/s11709-013-0200-3

Abstract: However, there is a lack of operating characteristic research in this region, especially the energy consumption

Keywords： ultra-thin floor heating panel the preheating time thermal comfort energy saving

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Giant Turbines Poised to Claim Offshore Wind

Sean O´Neill

Engineering 2021, Volume 7, Issue 7, Pages 894-896 doi: 10.1016/j.eng.2021.06.003

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Design and characteristic research of a novel electromechanical-hydraulic hybrid actuator with two transmission

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0735-x

Abstract: Servo-hydraulic actuators (SHAs) are widely used in mechanical equipment to drive heavy-duty mechanisms. However, their energy efficiency is low, and their motion characteristics are inevitably affected by uncertain nonlinearities. Electromechanical actuators (EMAs) possess superior energy efficiency and motion characteristics. However, they cannot easily drive heavy-duty mechanisms because of weak bearing capacity. This study proposes and designs a novel electromechanical-hydraulic hybrid actuator (EMHA) that integrates the advantages of EMA and SHA. EMHA mainly features two transmission mechanisms. The piston of the hydraulic transmission mechanism and the ball screw pair of the electromechanical transmission mechanism are mechanically fixed together through screw bolts, realizing the integration of two types of transmission mechanisms. The control scheme of the electromechanical transmission mechanism is used for motion control, and the hydraulic transmission mechanism is used for power assistance. Then, the mathematical model, structure, and parameter design of the new EMHA are studied. Finally, the EMHA prototype and test platform are manufactured. The test results prove that the EMHA has good working characteristics and high energy efficiency. Compared with the valve-controlled hydraulic cylinder system, EMHA exhibits a velocity tracking error and energy consumption reduced by 49.7% and 54%, respectively, under the same working conditions.

Keywords： electromechanical-hydraulic hybrid actuator (EMHA) integration transmission mechanisms power assistance energy efficiency working characteristics