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Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 270-278 doi: 10.1007/s11465-010-0023-z

Abstract: This paper addresses the problem of a numerical evaluation of the stiffness performance for multibodyAn overview is presented with basic formulation concerning indices that are proposed in literature.New indices are also outlined. Stiffness indices are computed and compared for a case study.Results are used for comparing the effectiveness of the stiffness indices.The main goal is to propose a performance index describing synthetically the elastostatic response of

Keywords： robotics     stiffness     performance indices    

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Pavement sustainability index for highway infrastructures: A case study of Maryland

Stella O. OBAZEE-IGBINEDION, Oludare OWOLABI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 2,   Pages 192-200 doi: 10.1007/s11709-017-0413-y

Abstract: Four categories of pavement performance evaluation indicators are subdivided into seven pavement conditionindices and analyzed as independent variables for each section of pavement.

Keywords： pavement indices     sustainability     pavement performance     flexible pavements    

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From dBA to soundscape indices: Managing our sound environment

Jian KANG

Frontiers of Engineering Management 2017, Volume 4, Issue 2,   Pages 184-192 doi: 10.15302/J-FEM-2017026

Abstract: This paper explores the need for developing ‘soundscape indices’, in the movement from noise controlinfluence on soundscape quality based on the database; developing, testing and validating soundscape indices; and demonstrating the applicability of the soundscape indices in the management of our sound environment

Keywords： noise     soundscape     management     sound     environment     soundscape index    

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Motion/force transmission indices of parallel manipulators

Xinjun LIU, Chao WU, Fugui XIE

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 1,   Pages 89-91 doi: 10.1007/s11465-011-0215-1

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Assessment indices for uniform and non-uniform thermal environments

ZHANG Yufeng, SUN Shufeng, ZHAO Rongyi

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 129-133 doi: 10.1007/s11708-008-0029-y

Abstract: Different assessment indices for thermal environments were compared and selected for proper assessmentThe results show that these three assessment indices provide equivalent evaluations in uniform environmentsHowever, overall thermal sensation differs from the other two indices and cannot be used as a proper

Keywords： thermal sensation     proper assessment     relationship     equivalent     thermal acceptability    

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Control efficiency optimization and Sobol’s sensitivity indices of MTMDs design parameters for buffeting

Nazim Abdul NARIMAN

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 1,   Pages 66-89 doi: 10.1007/s11709-016-0356-8

Abstract: Sobol’s sensitivity indices are calculated for the design parameters in addition to their interactionThe optimization results revealed better performance of the MTMDs in controlling the vertical and the

Keywords： MTMDs     power spectral density     fast Fourier transform     minimax optimization technique     Sobol’s sensitivity indices    

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Modeling, simulation, and prediction of global energy indices: a differential approach

Stephen Ndubuisi NNAMCHI, Onyinyechi Adanma NNAMCHI, Janice Desire BUSINGYE, Maxwell Azubuike IJOMAH, Philip Ikechi OBASI

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 375-392 doi: 10.1007/s11708-021-0723-6

Abstract: Modeling, simulation, and prediction of global energy indices remain veritable tools for econometric,engineering, analysis, and prediction of energy indices., this paper differentially modeled, simulated, and non-differentially predicated the global energy indicesThe state-of-the-art of the research includes normalization of energy indices, generation of differentialrate terms, and regression of rate terms against energy indices to generate coefficients and unexplained

Keywords： energy indices     differential model     normalization     simulation     inflation/deflation     predictive factor and    

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Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0943-5

Abstract: The water quality in a typical urban river segment originated with reclaimed water in Beijing was monitored for two years to investigate the evolution of water quality along the river, and statistical analysis was applied to determine factors influencing water quality of such river recharged by reclaimed water. It was found that no significant change in pollutant concentrations (including COD, NH -N, TN and TP) was observed during this time, and their average values were close to those of the original reclaimed water. However, turbidity and algal contents fluctuated temporally in the direction of river flow. Statistical analysis showed that turbidity was strongly positively correlated with algal contents for flow rate<0.1 m·s , whereas it was strongly positively correlated with both algal contents and TOC for flow rate>0.1 m·s . It was observed that diatom was the absolute predominant phyla with as the major species. In terms of algal bloom control, the specific growth rate of algae was strongly correlated to temperature, and was influenced by flow rate as well. Compared with two other rivers originated with reclaimed water and one originated with natural water, the Shannon–Wiener index in the objective river was the lowest, with values between 0.7 and 1.6, indicating a high risk for algal bloom. Statistics showed that Shannon–Wiener index was strongly negatively correlated to nutrient salts and cations.

Keywords： Reclaimed water     Urban river     Turbidity     Algae     Flow rate    

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Evaluation of the ecological status with benthic indices in the coastal system: the case of Bohai Bay

Wenqian CAI,Wei MENG,Lusan LIU,Kuixuan LIN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 737-746 doi: 10.1007/s11783-013-0617-x

Abstract: environmental materials collected from coastal areas of Bohai Bay (China) in April, 2008, three biotic indicesWhile all the three indices could assist decision makers in visualizing spatial changes of organic pollutantsin Bohai Bay, two indices, i.e., AMBI and Shannon-Wiener index, were effective in distinguishing sitesTo our knowledge, this is the first time that several benthic indices were used to assess the benthic

Keywords： AZTI’s Marine Biotic Index     Shannon-Wiener Index     W-statistic     ecological status     coastal system     Bohai Bay (China)    

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Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat

Caiyun LIU, Francisco PINTO, C. Mariano COSSANI, Sivakumar SUKUMARAN, Matthew P. REYNOLDS

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 3,   Pages 296-308 doi: 10.15302/J-FASE-2019269

Abstract:

The application of spectral reflectance indices (SRIs) as proxies to screen for yield potential (YPanalysis identified 11 and 9 SRIs in different developmental stages as efficient indirect selection indices

Keywords： genome-wide association study (GWAS)     heat tolerance     spectral reflectance     spring wheat    

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Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 2,   Pages 225-238 doi: 10.1007/s11709-011-0108-8

Abstract: In this paper, an experimental investigation is conducted to study the mechanical behavior of saturated natural loess, saturated natural filling in ground fissure and their corresponding saturated remoulded soils under three consolidated undrained triaxial stress tests, namely, conventional triaxial compression test (CTC), triaxial compression test (TC) and reduced triaxial compression test (RTC). The test results show that stress-strain relation, i.e. strain-softening or strain-hardening, is remarkably influenced by the structure, void ratio, stress path and confining pressure. Natural structure, high void ratio, TC stress path, RTC stress path and low confining pressures are favorable factors leading to strain-softening. Excess pore pressure during shearing is significantly affected by stress path. The tested soils are different from loose sand on character of strain-softening and are different from common clay on excess pore water pressure behavior. The critical states in ′– space in CTC, TC and RTC tests almost lie on one line, which indicates that the critical state is independent of the above stress paths. As for remoulded loess or remoulded filling, the critical state line (CSL) and isotropic consolidation line (ICL) in -log ′ space are almost straight, while for natural loess or natural filling, in -log ′ space there is a turning point on the CSL, which is similar to the ICL.

Keywords： stress paths     static liquefaction     natural soil     remoulded soil     loess     structure     total strength indices     excess    

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Uncertainty quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity dams

Nazim Abdul NARIMAN, Tom LAHMER, Peyman KARAMPOUR

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 303-323 doi: 10.1007/s11709-018-0462-x

Abstract: constructed and uncertainty quantification process was adopted by the support of Sobol’s sensitivity indices

Keywords： massed foundation     hydrodynamic pressure     Box-Behnken method     meta model     Sobol’s sensitivity indices    

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Extreme weather/climate events and disaster prevention and mitigation under global warming background

Zhai Panmao,Liu Jing

Strategic Study of CAE 2012, Volume 14, Issue 9,   Pages 55-63

Abstract: variable, events related to weather phenomena,compound events and climate extremes), the related extreme indices

Keywords： extreme climate indices     high impacts     meteorological disasters     engineering    

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Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1289-1300 doi: 10.1007/s11709-019-0548-0

Abstract: factors to quantify their rational effects using numerical simulations and the Sobol’s sensitivity indicesIt is worthy to mention that Sobol’s sensitivity indices manifested strong efficiency in detecting the

Keywords： shear waves     Sobol’s sensitivity indices     maximum principal stress     maximum overall displacement     tensile    

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A novel method to investigate voltage stability of IEEE-14 bus wind integrated system using PSAT

Satish KUMAR,Ashwani KUMAR,N. K. SHARMA

Frontiers in Energy 2020, Volume 14, Issue 2,   Pages 410-418 doi: 10.1007/s11708-016-0440-8

Abstract: This paper presents the line indices method to identify these weak buses, so that some corrective actionThe wind energy system at one of the bus in the test system is integrated and the performance of theverified by calculating the power flow (PF) using the power system analysis tool box (PSAT) and line indicesThe PF and load flow results are used to calculate line indices for the IEEE-14 bus test system which

Keywords： voltage stability     line indices     power system analysis tool box (PSAT)     wind system     line loading     power flow    

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Title Author Date Type Operation

Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Journal Article

Pavement sustainability index for highway infrastructures: A case study of Maryland

Stella O. OBAZEE-IGBINEDION, Oludare OWOLABI

Journal Article

From dBA to soundscape indices: Managing our sound environment

Jian KANG

Journal Article

Motion/force transmission indices of parallel manipulators

Xinjun LIU, Chao WU, Fugui XIE

Journal Article

Assessment indices for uniform and non-uniform thermal environments

ZHANG Yufeng, SUN Shufeng, ZHAO Rongyi

Journal Article

Control efficiency optimization and Sobol’s sensitivity indices of MTMDs design parameters for buffeting

Nazim Abdul NARIMAN

Journal Article

Modeling, simulation, and prediction of global energy indices: a differential approach

Stephen Ndubuisi NNAMCHI, Onyinyechi Adanma NNAMCHI, Janice Desire BUSINGYE, Maxwell Azubuike IJOMAH, Philip Ikechi OBASI

Journal Article

Factors influencing water quality indices in a typical urban river originated with reclaimed water

Jiao Zhang, Zhen Wei, Haifeng Jia, Xia Huang

Journal Article

Evaluation of the ecological status with benthic indices in the coastal system: the case of Bohai Bay

Wenqian CAI,Wei MENG,Lusan LIU,Kuixuan LIN

Journal Article

Spectral reflectance indices as proxies for yield potential and heat stress tolerance in spring wheat

Caiyun LIU, Francisco PINTO, C. Mariano COSSANI, Sivakumar SUKUMARAN, Matthew P. REYNOLDS

Journal Article

Experimental study of two saturated natural soils and their saturated remoulded soils under three consolidated undrained stress paths

Mingjing JIANG, Haijun HU, Jianbing PENG, Serge LEROUEIL

Journal Article

Uncertainty quantification of stability and damage detection parameters of coupled hydrodynamic-ground motion in concrete gravity dams

Nazim Abdul NARIMAN, Tom LAHMER, Peyman KARAMPOUR

Journal Article

Extreme weather/climate events and disaster prevention and mitigation under global warming background

Zhai Panmao,Liu Jing

Journal Article

Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Journal Article

A novel method to investigate voltage stability of IEEE-14 bus wind integrated system using PSAT

Satish KUMAR,Ashwani KUMAR,N. K. SHARMA

Journal Article