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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 series-expansion method for bounded fields, this material field is described with the characteristic

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

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Assessment of bridge expansion joints using long-term displacement measurement under changing environmental

Youliang DING, Aiqun LI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 374-380 doi: 10.1007/s11709-011-0122-x

Abstract: This paper addresses the problem of condition assessment of bridge expansion joints using long-term measurementThe effects of temperature, traffic loading and wind on the expansion joint displacements are analyzedStatistical process control using mean value control charts is further used to detect damage to the bridge expansionhad a good capability for detecting the damage-induced 1.0% variances of the annual changes in the expansion

Keywords： structural health monitoring     displacement     expansion joint     temperature effect     wind effect     traffic loading    

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An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion

Rongrit CHATTHAWORN,Surachai CHAITUSANEY

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 871-882 doi: 10.1631/FITEE.1500049

Abstract: optimization approach to evaluate the impact of an intermittent renewable energy source on transmission expansionscenarios representing the intermittent renewable energy generation and loads is proposed to obtain robust expansionMoreover, the impact of an intermittent renewable energy source on TEP was evaluated by comparing expansion

Keywords： Adaptive tabu search     Renewable energy generation     Robust optimization     Transmission expansion planning    

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Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0758-y

Abstract: In this study, an effective material-field series-expansion (MFSE)-based topology optimization design

Keywords： nodal line     topology optimization     structural dynamics design     material-field series-expansion    

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Numerical simulation of sudden-expansion two-phase flows with two-scale second-order moment particle

ZENG Zhuoxiong, HAN Shoulei, ZHOU Lixing

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 202-206 doi: 10.1007/s11708-007-0026-6

Abstract: The model is employed to simulate gas-particle flows in a sudden-expansion chamber.

Keywords： gas-particle     single-scale second-order     large-scale fluctuation     second-order     sudden-expansion    

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Research on Expansion Theory of Ammonium Nitrate

Lü Chunxu

Strategic Study of CAE 2001, Volume 3, Issue 9,   Pages 58-63

Abstract:

In this paper, expansion process of AN is described, its physical chemical parameters are calculatedand determined, the influeucing factors of AN expansion process are studied and a possible mechanismof expansion process is also given.

Keywords： expanded ammonium nitrate     expansion theory     physical chemical parameter     influencing factor    

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Modelling autogenous expansion for magnesia concrete in arch dams

JIN Feng, LUO Xiaoqing, ZHANG Chuhan, ZHANG Guoxin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 211-218 doi: 10.1007/s11709-008-0025-7

Abstract: To evaluate the effects of autogenous expansion on the stresses of arch dams, a simple model of autogenousexpansion for Magnesia Concrete in dam engineering is presented.This model is based on three assumptions: 1) the total amount of autogenous expansion of Magnesia Concreteis related only to the properties of materials and mixing of concrete; 2) the autogenous expansion ofelement arch dam simulation software, this model is employed to simulate the effects of autogenous expansion

Keywords： field-measured     irreversibility     temperature     irreversible     element arch    

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Scheme Study and Strategy on Expansion of Ethylene Plant to 660 kt/a at Yanshan Petrochemical Company

Cao Xianghong

Strategic Study of CAE 2003, Volume 5, Issue 11,   Pages 34-46

Abstract:

Yanshan Petrochemical Company after having expanded its 300 kt/a steam cracking unit to 450kt/k in 1994 is still experiencing such problems as low feedstock flexibility, high energy consumption and smaller scale as compared to other ethylene units constructed in the same time. In order to fully improve technical capability of steam crackers, reduce energy consumption, improve feedstock flexibility and increase production capacity, a lot of technical revamp cases on steam cracking were studied and compared with attention focused on the feasibility, safety, operability of the related revamp cases, as well as the advanced nature and economical features of the cases studied. As regards the pyrolysis-quench-compression system, the steam crackers will be retrofitted on the site with the pyrolysis gasoline fractionation tower, quench water tower, pyrolysis gas compressor and steam turbine replaced by new ones, respectively. The separation system will adopt a low-pressure methane removal technology with the demathanizer tower replaced, coupled with the C3 catalytic rectification/hydrogenation technology, while the high-pressure depentanizer will be replaced with the addition of a propylene rectification tower. The fractionation flow sheet and equipment will be adjusted with the addition of a propylene compressor and compressor for binary mixture of methane-ethylene cooling agents. This revamp has expanded the ethylene capacity to the target of 660 kt/a with the actual capacity reaching 710 kt/a. This revamp project has remarkably reduced the energy consumption, which is capable of using naphtha, light diesel fuel, heavy diesel fuel and the hydrocracked tail oil as the steam cracking feedstock. This project is the first to apply refrigeration by means of a mixed ccx)ling agent and has succeeded in using C3 catalytic rectification/ hydrogenation technology, which has given an impetus to the progress of steam cracking industry in the world.

Keywords： ethylene     plant     expansion     scheme     stady    

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Lagrangian simulation of deposition of CO gas-solid sudden expansion flow

HUANG Dongping, DING Guoliang, QUACK Hans

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 216-221 doi: 10.1007/s11708-008-0032-3

Abstract: Freezing and blockage resulting from the deposition of solid CO formed because of sudden expansion ofTo overcome this problem, the characteristics of the CO gas-solid sudden expansion flow are studied by

Keywords： comparison     gas-solid     downstream     blockage     Lagrangian    

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The research of competence set expansion’s

Wang Huating, Feng Junweng, Miao Chenglin, Wang Jian

Strategic Study of CAE 2008, Volume 10, Issue 8,   Pages 51-55

Abstract:

Competence set expansion is a process that decision-maker expands theThis paper analyses the concept of competence set and its expansion and provides competence set expansion

Keywords： expansion of competence set     habitual domain     managerial decision making    

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Industrial land expansion in rural China threatens environmental securities

Chi Zhang, Wenhui Kuang, Jianguo Wu, Jiyuan Liu, Hanqin Tian

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 2, doi: 10.1007/s11783-020-1321-2

Abstract: . • RIL expansion cost 9% of China’s crop production and threatened human/ecosystem safety. • The underprivilegedAccelerated rural industrial land expansion, particularly in regions under high geo-hazard risks, ledMoreover, negative effects from rural industrial land expansion could partially offset the crop productionThis study aims to inspire policy makers and researchers to rethink the current model of industrial expansion

Keywords： Industrialization     Land-use change     Environment risks     Environmental security     Urbanization     China    

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Study on temperature effects of single expansion joint bridge

Zhao Yibin and Shao Xudong

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 103-112

Abstract: style="text-align: justify;">There are some problems of easy damage and arduous maintenance in the expansionjoints at abutment, and a new type of single expansion joint bridge (SEJB) is herein proposed to deal

Keywords： single expansion bridge     temperature effect     stress and deformation     theoretical formula     parameter analysis    

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Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series Expansion

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Strategic Study of CAE 2001, Volume 3, Issue 11,   Pages 49-53

Abstract: by the buried rectangular and rib optical waveguides are obtained using variable transformed series expansion

Keywords： variable transformed series expansion method     optical waveguides     vectorial eigenmode analysis    

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Public key based bidirectional shadow image authentication without pixel expansion in image secret sharing Research Article

Xuehu YAN, Longlong LI, Jia CHEN, Lei SUN,publictiger@126.com

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 1,   Pages 88-103 doi: 10.1631/FITEE.2200118

Abstract: (ISS) is gaining popularity due to the importance of digital images and its wide application to cloud-based distributed storage and multiparty secure computing. generally includes shadow image detection and identification, and plays an important role in ISS. However, traditional dealer-participatory methods, which suffer from significant or storing auxiliary information, authenticate the shadow image mainly during the decoding phase, also known as unidirectional authentication. The authentication of the shadow image in the distributing (encoding) phase is also important for the participant. In this study, we introduce a based bidirectional method in ISS without for a (k,n) threshold. When the dealer distributes each shadow image to a corresponding participant, the participant can authenticate the received shadow image with his/her private key. In the decoding phase, the dealer can authenticate each received shadow image with a secret key; in addition, the dealer can losslessly decode the secret image with any k or more shadow images. The proposed method is validated using theoretical analyses, illustrations, and comparisons.

Keywords： Image secret sharing     Shadow image authentication     Public key     Pixel expansion     Lossless decoding    

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: for fracturing pressure in two different concentric regions of soil was presented based on the cavity expansion

Keywords： hydraulic fracturing pressure     layered     cavity expansion theory     triaxial fracturing test     cohesive soil    

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Title Author Date Type Operation

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

Journal Article

Assessment of bridge expansion joints using long-term displacement measurement under changing environmental

Youliang DING, Aiqun LI

Journal Article

An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion

Rongrit CHATTHAWORN,Surachai CHAITUSANEY

Journal Article

Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Journal Article

Numerical simulation of sudden-expansion two-phase flows with two-scale second-order moment particle

ZENG Zhuoxiong, HAN Shoulei, ZHOU Lixing

Journal Article

Research on Expansion Theory of Ammonium Nitrate

Lü Chunxu

Journal Article

Modelling autogenous expansion for magnesia concrete in arch dams

JIN Feng, LUO Xiaoqing, ZHANG Chuhan, ZHANG Guoxin

Journal Article

Scheme Study and Strategy on Expansion of Ethylene Plant to 660 kt/a at Yanshan Petrochemical Company

Cao Xianghong

Journal Article

Lagrangian simulation of deposition of CO gas-solid sudden expansion flow

HUANG Dongping, DING Guoliang, QUACK Hans

Journal Article

The research of competence set expansion’s

Wang Huating, Feng Junweng, Miao Chenglin, Wang Jian

Journal Article

Industrial land expansion in rural China threatens environmental securities

Chi Zhang, Wenhui Kuang, Jianguo Wu, Jiyuan Liu, Hanqin Tian

Journal Article

Study on temperature effects of single expansion joint bridge

Zhao Yibin and Shao Xudong

Journal Article

Vectorial Eigenmode Analysis of Optical Waveguides Based on the Variable Transformed Series Expansion

Xiao Jinbiao,Sun Xiaohan,Zhang Mingde,Ding Dong

Journal Article

Public key based bidirectional shadow image authentication without pixel expansion in image secret sharing

Xuehu YAN, Longlong LI, Jia CHEN, Lei SUN,publictiger@126.com

Journal Article

Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Journal Article