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Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 38-48 doi: 10.1007/s11709-018-0479-1

Abstract: Modulus of Elasticity (MOE) is a key parameter in reinforced concrete design.Out of range estimation of MOE in the existing codes of practice strongly affect the design and performanceIn addition, a wide range of experimental databases and empirical models to estimate the MOE from compressive

Keywords： modulus of elasticity     normal strength normal weight concrete     empirical models     design codes     compressive    

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Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 2,   Pages 224-237 doi: 10.1007/s11709-022-0914-1

Abstract: Moreover, an empirical design method is proposed based on the FE analysis results to predict the bearingThe method is confirmed to be effective, as confirmed by the close agreement between the predicting results

Keywords： single batter pile     skew horizontal load     model test     finite-element analysis     empirical design method    

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Reliability design method for steam turbine blades

SHI Jinyuan

Frontiers in Energy 2008, Volume 2, Issue 4,   Pages 363-368 doi: 10.1007/s11708-008-0073-7

Abstract: method for steam turbine blades is presented.The purport and calculation method for blade reliability are expounded.of a probabilistic design method and by interference models for stress distribution and strength distributionSome blade reliability design calculation formulas for a dynamic stress design method, a safety ratiodesign method for fatigue strength, and a vibration reliability design method for the first and second

Keywords： design reliability     force     probability     purport     reliability design    

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Prediction of the theoretical and semi-empirical model of ambient temperature

Foued CHABANE,Noureddine MOUMMI,Abdelhafid BRIMA,Abdelhafid MOUMMI

Frontiers in Energy 2016, Volume 10, Issue 3,   Pages 268-276 doi: 10.1007/s11708-016-0413-y

Abstract: It is well known that the ambient temperature is a sensitive parameter which has a great effect on biology, technology, geology and even on human behavior. A prediction is a statement about an uncertain event. It is often, but not always, based upon experience or knowledge. Although guaranteed accurate information about the future is in many cases impossible, prediction can be useful to assist in making plans about possible developments. As a result, temperature profiles can be developed which accurately represent the expected ambient temperature exposure that this environment experiences during measurement. The ambient temperature over time is modeled based on the previous and data and using a Lagrange interpolation. To observe the comprehensive variation of ambient temperature the profile must be determined numerically. The model proposed in this paper can provide an acceptable way to measure the change in ambient temperature.

Keywords： ambient temperature     environment     correlation     theoretical model     semi-empirical    

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Detection of schedule delay risk of empirical construction projects

Tsegay GEBREHIWET, Hanbin LUO

Frontiers of Engineering Management 2018, Volume 5, Issue 2,   Pages 251-267 doi: 10.15302/J-FEM-2018086

Abstract: In Ethiopian construction projects, schedule delay risk is a predominant issue because it is not properly addressed. Although several studies have been focused on the various effects of risk in construction projects, limited efforts have been made to investigate the typical and the overall schedule delay risk. In this study, our aim is to detect the typical and overall schedule delay risk throughout the construction project lifecycle, which consists of the pre-construction, construction, and post-construction stages, and compare the stages with each other. Common criteria, sub-criteria, and attributes were developed for all alternatives for the purpose of making a risk decision. The methodology that was followed integrated the multiple-criteria decision-making (MCDM) model of fuzzy analytic hierarchy process comprehensive evaluation (FAHPCE) and the relative important index (RII). Data were collected from 77 participants, who were selected through purposive sampling from different contracting organizations in Ethiopian construction projects by means of questionnaires that were distributed to experienced experts. The findings showed that there is a typical delay risk either in the type or in the level of the different construction activities. Consequently, the most influenced alternative is the construction stage because of the high-risk responsibility, resource, and contract condition related criteria. The post-construction stage was the second most influenced stage because of the high-risk responsibility-related criteria. The pre-constructed stage was the least influenced stage that consist high-risk criteria of responsibility, resource, and contract condition related. These differences provided noteworthy information about risk mitigation in construction projects by identifying the exact risk level on specific activity to make appropriate decision.

Keywords： fuzzy analytic hierarchy process comprehensive evaluation     construction project     detection of delay risk     relative important index    

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Effect of heat transfer coefficient of steam turbine rotor on thermal stress field under off-design condition

Jie GUO,Danmei XIE,Hengliang ZHANG,Wei JIANG,Yan ZHOU

Frontiers in Energy 2016, Volume 10, Issue 1,   Pages 57-64 doi: 10.1007/s11708-015-0385-3

Abstract: The precise calculation of temperature and thermal stress field of steam turbine rotor under off-designNext, the differentiation between existing empirical formulas has been analyzed from the aspect of physicallow has a greater influence on that of rotor temperature and thermal stress, which means a precise empirical

Keywords： steam turbine     rotor     thermal stress     heat transfer coefficient     empirical formula    

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Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 227-239 doi: 10.1007/s11465-020-0587-1

Abstract: In this study, the bidimensional empirical mode decomposition (BEMD) method is used to identify such

Keywords： bidimensional empirical mode decomposition     spatial spectrum analysis     boundary effect     vibration identification    

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Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear

A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 3-15 doi: 10.1007/s11709-017-0418-6

Abstract: of design parameters.numerical simulations modeling of plastic hinge hysteretic behavior of RC shear walls and estimation of empiricalend-element design parameters.Using results of numerous analyses, the empirical relations among wall cyclic behavioral measures anddesign parameters are developed and their accuracy is investigated.

Keywords： RC wall hysteretic measures     RC wall design parameters     empirical relations     numerical simulations     RC rectangular    

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Development of mix design method based on statistical analysis of different factors for geopolymer concrete

Paramveer SINGH; Kanish KAPOOR

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 10,   Pages 1315-1335 doi: 10.1007/s11709-022-0853-x

Abstract: The present study proposes the mix design method of Fly Ash (FA) based geopolymer concrete using ResponseThe 2D contour plots were used to setup the mix design method to achieve the target compressive strengthThe proposed mix design method of geopolymer concrete is divided into three categories based on curingThe proposed mix design method of geopolymer concrete was validated through experimentation of M30, M50The observed experimental compressive strength results validate the mix design method by more than 90%

Keywords： geopolymer concrete     mix design     fly ash     response surface methodology     compressive strength     stress−    

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Overall HIEs deconstruction method and its application

Li LIN, Chengqi XUE,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 466-471 doi: 10.1007/s11465-009-0076-z

Abstract: the general analysis steps of hierarchical HIEs and puts forward a new systematical deconstruction methodA mobile phone is taken as the research subject, the emotional design rules are inferred based on theThe research on the deconstruction method promotes the study of Kansei engineering and is a significantguide and reference for the theory and practice of related product design fields.

Keywords： product design     relationship model     human interface     design rules     emotion    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract:

The smoothed finite element method (S-FEM) was originated by G R Liu by combining some meshfree techniqueswith the well-established standard finite element method (FEM).Most importantly, one can now purposely design an S-FEM model to obtain solutions with special propertiesas wish, meaning that S-FEM offers a framework for design numerical models with desired properties.

Keywords： computational method     finite element method     smoothed finite element method     strain smoothing technique    

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Changes in public trust in physicians: empirical evidence from China

Dahai Zhao, Zhiruo Zhang

Frontiers of Medicine 2019, Volume 13, Issue 4,   Pages 504-510 doi: 10.1007/s11684-018-0666-4

Abstract: Studies examining the trends in public trust in physicians have provided a considerable amount of valuable policy implications for policymakers compared with cross-sectional studies on this topic in many countries. This study investigated changes in public trust in physicians in China based on two cross-sectional national surveys conducted in 2011 and 2016 and identified the determinants of these changes. The results indicated 83.4% of respondents in 2011 reported trust or strong trust in physicians in China, which decreased to 64.2% by 2016. The results of ordinal logistic regression demonstrated that public trust in physicians in China had decreased significantly from 2011 to 2016 ( <0.001) after adjusting for other independent variables. Self-reported health status, self-rated happiness, and self-identified social class were all associated positively with public trust in physicians in China. The results also confirmed that decreasing public satisfaction with the most recent treatment experience was the major determinant of decreasing public trust in physicians in China. The findings of this study suggest that decreasing public trust in physicians deserves considerable attention from national policymakers and that improving satisfaction with treatment experiences would be the most effective strategy for enhancing public trust in physicians in China.

Keywords： trust in physicians     public trust     physician-patient relationship     health system performance    

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relationship of industrial agglomeration and low-carbon economy considering spatiotemporal differentiation: An empirical

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 285-299 doi: 10.1007/s42524-022-0197-1

Abstract: between industrial agglomeration and low-carbon economy utilizing the coupling coordination analysis method

Keywords： spatiotemporal differentiation     industrial agglomeration     low-carbon economy     construction machinery industry     empirical    

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An Empirical Study on the Generation Mechanism of NIMBY Conflicts of Construction Projects

Guang-she Jia,Song-yu Yan,Wen-jun Wang,Ralf Müller,Chen Lin

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 39-49 doi: 10.15302/J-FEM-2016015

Abstract: Finally, they performed the confirmatory analysis method of Structural Equation Modeling to test the

Keywords： NIMBY conflicts     social conflict     construction projects     mechanism     empirical study    

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Function-oriented optimization design method for underactuated tendon-driven humanoid prosthetic hand

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0696-0

Abstract: In this study, a function-oriented optimization design (FOD) method is proposed for the design of a tendon-driven, demonstrating that the kinetostatic model of the prosthetic finger is effective and makes the FOD methodThis study suggests that the FOD method enables the systematic evaluation of grasping performance forprosthetic hands in the design stage, which could improve the design efficiency and help prosthetichands meet the design requirements.

Keywords： function-oriented     tendon driven     prosthetic hand     optimization     humanoid     underactuated    

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Title Author Date Type Operation

Empirical models and design codes in prediction of modulus of elasticity of concrete

Behnam VAKHSHOURI, Shami NEJADI

Journal Article

Numerical analysis of bearing behaviors of single batter piles under horizontal loads in various directions

Journal Article

Reliability design method for steam turbine blades

SHI Jinyuan

Journal Article

Prediction of the theoretical and semi-empirical model of ambient temperature

Foued CHABANE,Noureddine MOUMMI,Abdelhafid BRIMA,Abdelhafid MOUMMI

Journal Article

Detection of schedule delay risk of empirical construction projects

Tsegay GEBREHIWET, Hanbin LUO

Journal Article

Effect of heat transfer coefficient of steam turbine rotor on thermal stress field under off-design condition

Jie GUO,Danmei XIE,Hengliang ZHANG,Wei JIANG,Yan ZHOU

Journal Article

Relative vibration identification of cutter and workpiece based on improved bidimensional empirical mode

Jiasheng LI, Xingzhan LI, Wei WEI, Pinkuan LIU

Journal Article

Estimation of relations among hysteretic response measures and design parameters for RC rectangular shear

A. ARAB, Ma. R. BANAN, Mo. R. BANAN, S. FARHADI

Journal Article

Development of mix design method based on statistical analysis of different factors for geopolymer concrete

Paramveer SINGH; Kanish KAPOOR

Journal Article

Overall HIEs deconstruction method and its application

Li LIN, Chengqi XUE,

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired

Gui-Rong Liu

Journal Article

Changes in public trust in physicians: empirical evidence from China

Dahai Zhao, Zhiruo Zhang

Journal Article

relationship of industrial agglomeration and low-carbon economy considering spatiotemporal differentiation: An empirical

Journal Article

An Empirical Study on the Generation Mechanism of NIMBY Conflicts of Construction Projects

Guang-she Jia,Song-yu Yan,Wen-jun Wang,Ralf Müller,Chen Lin

Journal Article

Function-oriented optimization design method for underactuated tendon-driven humanoid prosthetic hand

Journal Article