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Quality evaluation of lightweight cellular concrete by an ultrasound-based method

Frontiers of Structural and Civil Engineering Pages 1170-1182 doi: 10.1007/s11709-022-0874-5

Abstract: The accuracy of subgrade quality evaluation is important for road safety assessment.

Keywords： lightweight cellular concrete subgrade ultrasound testing quality evaluation crack discrimination

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Establishment of the Comprehensive Evaluation System of Cold Stamping Die Quality

LU Xiao-chun, GUO Sheng, RUAN Feng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1, Pages 80-84 doi: 10.1007/s11465-005-0021-8

Abstract:

A comprehensive evaluation system of die quality, a multiplayer hierarchical amendment index systemaccording to the characteristics of cold stamping die production, an evaluation standard referring tothe technique and design rules of dies, and a scientific evaluation by using the multiplayer hierarchicaland the fuzzy comprehensive evaluation methods are presented in this paper.

Keywords： scientific evaluation stamping multiplayer hierarchical technique evaluation standard

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Research on port ecological suitability evaluation index system and evaluation model

Yaofeng XIE,Xia LV,Ru LIU,Liuyan MAO,Xiaoxi LIU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 1, Pages 65-70 doi: 10.1007/s11709-014-0258-6

Abstract: Therefore, it’s urgent to establish a scientific and complete system of port ecological suitability evaluationThis paper pointed out the characteristics of port ecological effects and the principles of selecting evaluationOn this basis, we constructed the port ecological suitability evaluation index.quantitative analytic hierarchy process, to meet the multi-level, multi-objective characteristics of evaluationThe evaluation index system and evaluation model can be used to analysis the ecological suitability of

Keywords： port ecological suitability press-state-response (PSR) model evaluation index system

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Coupling evaluation for material removal and thermal control on precision milling machine tools

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 1, Pages 12-12 doi: 10.1007/s11465-021-0668-9

Abstract: Machine tools are one of the most representative machining systems in manufacturing. The energy consumption of machine tools has been a research hotspot and frontier for green low-carbon manufacturing. However, previous research merely regarded the material removal (MR) energy as useful energy consumption and ignored the useful energy consumed by thermal control (TC) for maintaining internal thermal stability and machining accuracy. In pursuit of energy-efficient, high-precision machining, more attention should be paid to the energy consumption of TC and the coupling relationship between MR and TC. Hence, the cutting energy efficiency model considering the coupling relationship is established based on the law of conservation of energy. An index of energy consumption ratio of TC is proposed to characterize its effect on total energy usage. Furthermore, the heat characteristics are analyzed, which can be adopted to represent machining accuracy. Experimental study indicates that TC is the main energy-consuming process of the precision milling machine tool, which overwhelms the energy consumption of MR. The forced cooling mode of TC results in a 7% reduction in cutting energy efficiency. Regression analysis shows that heat dissipation positively contributes 54.1% to machining accuracy, whereas heat generation negatively contributes 45.9%. This paper reveals the coupling effect of MR and TC on energy efficiency and machining accuracy. It can provide a foundation for energy-efficient, high-precision machining of machine tools.

Keywords： machine tools cutting energy efficiency thermal stability machining accuracy coupling evaluation

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Tender evaluation through efficiency analysis for public construction contracts

Stefan NIEWERTH, Peter VOGT, Markus THEWES

Frontiers of Engineering Management 2022, Volume 9, Issue 1, Pages 148-158 doi: 10.1007/s42524-020-0119-z

Abstract: of various criteria, such as the price, life-cycle costs, environmental, and social aspects, in the evaluationHowever, the established evaluation formulas, which are used to obtain the best value for money procurementThe existing evaluation formulas exhibit mathematical weaknesses, wherein scoring indices do not express, a conflict is observed between the political requirement of non-monetary award criteria and their evaluationSpecifically, this study explores the essential problems of existing evaluation formulas and develops

Keywords： bid evaluation public procurement best value for money data envelopment analysis contractor selection

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Ecological security evaluation of Africa

Huihui WEI, Wenjuan ZHANG, Feng ZHANG, Guojun SUN

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 4, Pages 467-477 doi: 10.15302/J-FASE-2020320

Abstract: In this study, we constructed an evaluation system based on a pressure-state-response model and evaluated

Keywords： Africa ecological security evaluation system PSR model

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Basic model study on efficiency evaluation in collaborative design work process

XIE Qiu, YANG Yu, LI Xiaoli, ZHAO Ningyu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 344-349 doi: 10.1007/s11465-007-0060-4

Abstract: During the efficiency evaluation process of collaborative design work, because of the lack of efficiencyevaluation models, a basic analytical model for collaborative design work efficiency evaluation is proposedapplication process and steps of this basic analytical model are elaborated when used for efficiency evaluation

Keywords： function system work evaluation process efficiency evaluation design work

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Post-evaluation of a water pollution control plan: methodology and case study

Lin ZENG,Xin DONG,Siyu ZENG,Tianzhu ZHANG,Jing LI,Jining CHEN

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4, Pages 712-724 doi: 10.1007/s11783-015-0773-2

Abstract: This paper proposes a three-step, post-evaluation methodology to analyze the implementation result ofFirst, a multi-attribute evaluation method based on an index system is established to score the enforcementTherefore, this case study demonstrates the feasibility and flexibility of the proposed post-evaluation

Keywords： river basin water pollution control plan post plan evaluation multi-attribute comprehensive evaluation

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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: Based on the two-dimensional evaluation results, three-dimensional surface topographies in five typical

Keywords： surface topography fractal evaluation fractal interpolation reconstruction composite

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Manufacturing system modeling and performance evaluation based on improved stochastic statechart

ZHANG Guojun, HE Jiabing, ZHU Haiping, CHEN Xuan

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 4, Pages 453-458 doi: 10.1007/s11465-007-0078-7

Abstract: shows that the improved stochastic statechart can effectively simplify the modeling and performance evaluation

Keywords： performance evaluation different configuration improved continuous-time

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The City Intelligence Quotient (City IQ) Evaluation System: Conception and Evaluation Review

Zhiqiang Wu,Yunhe Pan,Qiming Ye,Lingyu Kong

Engineering 2016, Volume 2, Issue 2, Pages 196-211 doi: 10.1016/J.ENG.2016.02.009

Abstract:

After a systematic review of 38 current intelligent city evaluation systems (ICESs) from around theFrom this base, the fundamentals of the City Intelligence Quotient (City IQ) Evaluation System are developedCity IQ Evaluation System 2.0 is further developed, with improvements in its universality, openness,After employing deviation evaluation methods in the IQ assessment, City IQ Evaluation System 3.0 wasThe results have proved that the City IQ Evaluation System, developed on the basis of intelligent life

Keywords： iCity Evaluation system Open data Intelligent city-being Intelligence quotient

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Economic evaluation of reverse osmosis desalination system coupled with tidal energy

Changming LING, Yifei WANG, Chunhua MIN, Yuwen ZHANG

Frontiers in Energy 2018, Volume 12, Issue 2, Pages 297-304 doi: 10.1007/s11708-017-0478-2

Abstract: A reverse osmosis (RO) desalination system coupled with tidal energy is proposed. The mechanical energy produced by the tidal energy through hydraulic turbine is directly used to drive the RO unit. The system performances and the water cost of the conventional and tidal energy RO systems are compared. It is found that the proposed tidal energy RO system can save water cost in the range of 31.0% 41.7% in comparison with the conventional RO system. There is an optimum feed pressure that leads to the lowest water cost. The tidal RO system can save more costs at a high feed pressure or a high water recovery rate. The optimum feed pressure of the tidal energy RO system is higher than that of the conventional RO system. The longer lifetime of the tidal energy RO system can save even more water cost. When the site development cost rate is lower than 40%, the water cost of the tidal energy RO system will be lower than that of the conventional RO system. The proposed technology will be an effective alternative desalination method in the future.

Keywords： reverse osmosis (RO) desalination tidal energy model economic evaluation

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A Comprehensive Evaluation of Policy Effectiveness for Energy Efficiency in Existing Buildings

Xing Wei,Han-ding Guo

Frontiers of Engineering Management 2014, Volume 1, Issue 4, Pages 341-347 doi: 10.15302/J-FEM-2014060

Abstract: This paper creates an evaluation index system and a grey comprehensive evaluation model for policy effectivenesssubsidy policy and preferential tax policy at market cultivation stage for its empirical comparative evaluationThe evaluation indicates that the former is more effective.

Keywords： grey comprehensive evaluation existing buildings energy efficiency policies effectiveness

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A review of systematic evaluation and improvement in the big data environment

Feng YANG, Manman WANG

Frontiers of Engineering Management 2020, Volume 7, Issue 1, Pages 27-46 doi: 10.1007/s42524-020-0092-6

Abstract: As one of the important functions of management decision-making, evaluation has been given more functionsExploring the applicable evaluation methods in the big data environment has become an important subjectWe first review the evaluation methods based on the main analytic techniques of big data such as dataFinally, we analyze the new application areas of evaluation methods and give the future directions ofevaluation method research in a big data environment from six aspects.

Keywords： big data evaluation methods systematic improvement big data analytic techniques data mining

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Genotoxicity evaluation of surface waters located in urban area of Xi’an City using

Yongjun LIU, Aining ZHANG, Xiaoyan MA, Xiaochang WANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6, Pages 860-866 doi: 10.1007/s11783-012-0462-3

Abstract: In this study, micronucleus (MCN) and chromosome aberration (CA) tests in root tip cells were carried out in order to assess the water quality and the comprehensive genotoxic potential of surface waters located in the urban area of Xi’an City, China. For these evaluations, water samples from different surface waters (four rivers, two lakes, two biological treatment plant effluents) were collected, the ultra-pure water and methyl methanesulfonate solution was used as the negative and positive control, respectively. In our results, highly significant differences in MCN permillage (average number of micronuclei per 1000 cells), CA frequencies and PI (pollution index) values were found among three rivers and two WWTP effluents, the tested samples from two rivers caused the decrease of mitotic index over 22% compared with the negative control. No significant changes were observed in micronuclei and chromosome aberrations frequencies at one river and two lakes during the period of test (wet season). These results point out a poor state of the water quality and genotoxic activity of the main surface waters in Xi’an City. It is recommended to establish a monitoring program for the presence of genotoxic agents in these surface waters.

Keywords： genotoxicity surface water evaluation Vicia faba

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Title Author Date Type Operation

Quality evaluation of lightweight cellular concrete by an ultrasound-based method

Journal Article

Establishment of the Comprehensive Evaluation System of Cold Stamping Die Quality

LU Xiao-chun, GUO Sheng, RUAN Feng

Journal Article

Research on port ecological suitability evaluation index system and evaluation model

Yaofeng XIE,Xia LV,Ru LIU,Liuyan MAO,Xiaoxi LIU

Journal Article

Coupling evaluation for material removal and thermal control on precision milling machine tools

Journal Article

Tender evaluation through efficiency analysis for public construction contracts

Stefan NIEWERTH, Peter VOGT, Markus THEWES

Journal Article

Ecological security evaluation of Africa

Huihui WEI, Wenjuan ZHANG, Feng ZHANG, Guojun SUN

Journal Article

Basic model study on efficiency evaluation in collaborative design work process

XIE Qiu, YANG Yu, LI Xiaoli, ZHAO Ningyu

Journal Article

Post-evaluation of a water pollution control plan: methodology and case study

Lin ZENG,Xin DONG,Siyu ZENG,Tianzhu ZHANG,Jing LI,Jining CHEN

Journal Article

Fractal characteristic evaluation and interpolation reconstruction for surface topography of drilled

Journal Article

Manufacturing system modeling and performance evaluation based on improved stochastic statechart

ZHANG Guojun, HE Jiabing, ZHU Haiping, CHEN Xuan

Journal Article

The City Intelligence Quotient (City IQ) Evaluation System: Conception and Evaluation

Zhiqiang Wu,Yunhe Pan,Qiming Ye,Lingyu Kong

Journal Article

Economic evaluation of reverse osmosis desalination system coupled with tidal energy

Changming LING, Yifei WANG, Chunhua MIN, Yuwen ZHANG

Journal Article

A Comprehensive Evaluation of Policy Effectiveness for Energy Efficiency in Existing Buildings

Xing Wei,Han-ding Guo

Journal Article

A review of systematic evaluation and improvement in the big data environment

Feng YANG, Manman WANG

Journal Article

Genotoxicity evaluation of surface waters located in urban area of Xi’an City using

Yongjun LIU, Aining ZHANG, Xiaoyan MA, Xiaochang WANG

Journal Article

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