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A MATLAB code for the material-field series-expansion topology optimization method

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 607-622 doi: 10.1007/s11465-021-0637-3

Abstract: This paper presents a MATLAB implementation of the material-field series-expansion (MFSE) topo-logy optimizationWith the focus on the implementation of the MFSE method, the present MATLAB code uses the maximum stiffnessThe MATLAB code consists of three parts, namely, the main program and two subroutines (one for aggregatingThe implementation of the code and its extensions to topology optimization problems with multiple load

Keywords： MATLAB implementation topology optimization material-field series-expansion method bounded material

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Simulation Research on PWM Control in Excitation System of Generator

Jia Guixi,Xu Wei,Guo Baoyue,Zhang Chentang

Strategic Study of CAE 2005, Volume 7, Issue 6, Pages 50-53

Abstract: Simulation results about design system through MATLAB are presented to show the obvious effect on the

Keywords： PWM high power factor excitation system Matlab simulation

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Design of hydraulic resonance of pulsed water - jet

Pu Jianing,Chen Ming

Strategic Study of CAE 2009, Volume 11, Issue 2, Pages 36-42

Abstract: The conditions of desirable resonance are searched by direct search algorithm of Matlab .

Keywords： pulsed water- jet hydraulic resonance method of characteristics variable time step method Matlab

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Research of an Improved Bridge Type Solid-state Current Limiter

Li Hongfeng,Jia Guixi,Qi Wei,Xu Wei

Strategic Study of CAE 2005, Volume 7, Issue 8, Pages 75-79

Abstract: Simulation based on Matlab/Simulink is analysed and a laboratory set-up in which the thyristor is controlled

Keywords： short circuit current limiter novel bridge type circuit simulation based on Matlab/Simulink dynamic-mode

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Twenty years of achievements in China’s implementation of the Stockholm Convention

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1587-7

Abstract:

● China’s implementation of the SC was systematically studied.

Keywords： Stockholm Convention Persistent organic pollutants Compliance Effectiveness

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Understanding barriers to BIM implementation: Their impact across organizational levels in relation to

Sander SIEBELINK, Hans VOORDIJK, Maaike ENDEDIJK, Arjen ADRIAANSE

Frontiers of Engineering Management 2021, Volume 8, Issue 2, Pages 236-257 doi: 10.1007/s42524-019-0088-2

Abstract: of a contracting firm contributes to understanding the barriers that organizations face during the implementationOur study provides insights on where to focus BIM implementation measures and how to enhance organizational

Keywords： building information modeling implementation barriers maturity organizational levels

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Overview and problems of BIM implementation in Japan

Takashi KANETA, Shuzo FURUSAKA, Nisi DENG

Frontiers of Engineering Management 2017, Volume 4, Issue 2, Pages 146-155 doi: 10.15302/J-FEM-2017007

Abstract: This paper aims to overview Building Information Modeling (BIM) implementation and problems of BIM implementationFirst, BIM implementation guidelines and pilot projects are introduced.Then, some popular BIM software together with typical implementation cases are provided.BIM implementation in Japan is not always encouraged via a top-down consensus in architectural firms

Keywords： Building Information Modeling general contractor architect drawing procurement project management

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Thoughts on strategies and paths to achieve carbon peaking and carbon neutrality in China

Frontiers in Energy 2023, Volume 17, Issue 3, Pages 324-331 doi: 10.1007/s11708-023-0883-7

Abstract: Next, eight major implementation paths for achieving the goals of “carbon peaking and carbon neutrality

Keywords： carbon peaking and carbon neutrality strategy implementation path important sci-tech innovation implementation

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Quality Function Deployment Implementation in Construction: A Systematic Literature Review

Elizabeth A. Cudney,William L. Gillis

Frontiers of Engineering Management 2016, Volume 3, Issue 3, Pages 224-230 doi: 10.15302/J-FEM-2016036

Abstract: The construction of new buildings represents a significant investment. The goal of new building construction is to maximize value and minimize cost while staying on time and within budget. Translating customer requirements into engineering terms for new construction design is vital for a construction project to be successful. Quality function deployment has been successfully used in product development to capture the voice of the customer and translate it into engineering characteristics. Quality function deployment then carries these parameters into production and service to ensure the voice of the customer is being met with the final product. The house of quality, a tool within quality function deployment, can provide a means for comparison of owner’s project requirements and the proposed design, along with identifying how the design decisions impact meeting customer requirements and green building requirements. Quality function deployment can effectively link the project phases through design and construction and into operations and maintenance to ensure the owner’s project requirements are met with the final building. This research identifies and categorizes studies of quality function deployment applications in construction. The research method used is a systematic literature review from databases related to quality function deployment in the construction industry published in the periodicals through 2016. The principal findings of implementations, practices, and integrated approaches are then summarized. This article intends to propel further research of quality function deployment in the construction sector.

Keywords： construction engineering management quality function deployment systematic review

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Research and implementation of flexible coding system oriented multi-view

ZHANG Xuhui, ZHANG Xu, NING Ruxin

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 448-452 doi: 10.1007/s11465-007-0077-8

Abstract: The architecture of the flexible coding system oriented multi-view is studied and the implementation

Keywords： foundation different management utilization Generation

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Outcomes of patients awaiting lung transplantation after the implementation of donation after brain death

Frontiers of Medicine 2022, Volume 16, Issue 5, Pages 760-765 doi: 10.1007/s11684-021-0899-5

Abstract: To elaborate the outcomes of patients awaiting lung transplantation (LTx) after the implementation of

Keywords： lung transplantation donation after brain death waitlist

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Design and Implementation of Meteorological Observation System Projects

Zheng Guoguang

Strategic Study of CAE 2000, Volume 2, Issue 6, Pages 21-26

Abstract: The principal goals of the design and implementation of the meteorological observation system projectThis paper is also one of the extending parts for “the Engineerized Implementation of Atmospheric

Keywords： atmosphere observation observational automation engineering design and implementation

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New medical risks affecting obstetrics after implementation of the two-child policy in China

Qiang Li, Dongrui Deng

Frontiers of Medicine 2017, Volume 11, Issue 4, Pages 570-575 doi: 10.1007/s11684-017-0552-5

Abstract:

China recently instituted a two-child policy in response to its aging population, declining workforce and demographic dividend, and the need to develop asocial economy. Additionally, women generally delay having a second child because of the overwhelming pressure in their lives. With the improvements in assisted fertility technologies in recent years, the number of elderly women attempting to bear children has increased. The quality of woman’s eggs and a man’s sperm declined dramatically with increasing age, leading to an increased risk of pregnancy-related complications among older women. Therefore, the types of fertility problems experienced by elderly females must be provided with considerable attention by obstetricians. This commentary article focuses on the medical problems faced by older second-child pregnant women. This work discusses their increased rates of infertility, spontaneous abortion, fetal malformation, gestational diabetes, cesarean section, placenta previa, postpartum hemorrhage, postpartum depression, and hypertensive disorders, which complicate pregnancy.

Keywords： two-child policy birth defects cesarean delivery placenta previa

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Concepts and implementation of strain-based criteria in design codes for steel structures

Reidar BJORHOVDE

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3, Pages 210-216 doi: 10.1007/s11709-012-0165-7

Abstract: A uniaxial tension test is commonly used to determine the mechanical properties of steel, but it has no meaning for the response of the material in a structure. The test was developed as a consensus solution by producers, fabricators, designers and code writers, to have a standard by which similar materials could be compared to a common base. It does not represent the actual behavior of the steel in a structure, and was never intended to do so. To study the true behavior of the structure and how the material responds it would be better to determine the strains and deformations that will take place during actual service condition. Such characteristics reflect the real behavior, whether in the elastic or inelastic range. If stresses or forces are needed, these are easily determined by the value of the strain and the relevant material modulus, along with the type of cross section, whether elastic or inelastic. The paper addresses the properties of a range of structural steels, how these are incorporated into design standards and how the standards define deformation characteristics and demands for bolted and welded connections.

Keywords： steel stress-strain characteristics tension test strain design actual behavior improved design codes

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Frequency-controlable sine signal based on PWM and its implementation on FPGA

Lianzhen HUANG, Jiangang LI, Dongjun ZHANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3, Pages 322-328 doi: 10.1007/s11465-012-0312-9

Abstract:

A sine generation method that the different frequent sine signals can be generated by the different Pulse-Width Modulation (PWM) signals generated by Field-Programmable Gate Array (FPGA) through low-pass filter of fixed parameters was proposed. The method just takes a few FPGA resources and was proved feasible by the theory. The experiment results and theory analysis tally.

Keywords： Pulse-Width Modulation (PWM) Field-Programmable Gate Array (FPGA) frequency controllable