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The application of marine meteorological observation in tropical cyclone data assimilation

Wan Qilin,He Jinhai

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 33-42

Abstract: of marine meteorological observation, it is recognized that there is a need to develop appropriate dataassimilation technology for enhancing the efficiency of data utilization.tropical cyclone data assimilation.The results show: the multi scale/block batch wise data assimilation can be appropriate for the dataBy means of the multi scale/block batch wise data assimilation, to amplify the utilization of marine

Keywords： marine meteorological observation     the efficiency of data utilization     multi scale/block batch wise data    

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End-use energy utilization efficiency of Nigerian residential sector

Fidelis I. ABAM,Olayinka S. OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 322-334 doi: 10.1007/s11708-014-0329-3

Abstract: In this paper, the end-use efficiencies of the different energy carriers and the overall energy efficiencyThe overall energy efficiency ranges from 19.15% in 2006 to 20.19% in 2011 with a mean of (19.96±0.23)% while the overall exergy efficiency ranges from 4.34% in 2006 to 4.40% in 2011 with a mean of (4.31The energy and exergy efficiency margin was 15.58% with a marginal improvement of 0.07% and 0.02%, respectivelyElectricity utilization exergy efficiency is affected by vapor-compression air conditioning application

Keywords： end-use     energy     exergy efficiency     residential sector     Nigeria    

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Improving the efficiency and effectiveness of global phosphorus use: focus on root and rhizosphere levels

Uwe LUDEWIG, Lixing YUAN, Günter NEUMANN

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 357-365 doi: 10.15302/J-FASE-2019275

Abstract: Unfortunately, plant physiologists, agronomists, farmers and end users employ different measures for P use efficiencyMajor physiological and genetic factors for plant P uptake and utilization have been identified, but

Keywords： acquisition efficiency     plant growth promoting rhizobacteria     phosphate     use efficiency     utilization efficiency    

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Industrial eco-efficiency and its spatial-temporal differentiation in China

Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 559-568 doi: 10.1007/s11783-012-0400-4

Abstract: The aim of this paper is to study the spatial-temporal differentiation of industrial eco-efficiency inUsing methods based on the data envelopment analysis (DEA) model and exploratory spatial data analysis(ESDA) and data from 1985, 1995, 2005, and 2008 of 30 provinces in China, the spatial-temporal patternchanges in industrial eco-efficiency are discussed.The results show that: first, the patterns of industrial eco-efficiency are dominated by clustering of

Keywords： industrial eco-efficiency     data envelopment analysis (DEA) model     exploratory spatial data analysis (ESDA    

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A data envelopment analysis of agricultural technical efficiency of Northwest Arid Areas in China

Yubao WANG, Lijie SHI, Haojie ZHANG, Shikun SUN

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 2,   Pages 195-207 doi: 10.15302/J-FASE-2017153

Abstract: Severe resource shortage and waste of resource in agricultural production make it necessary to assess efficiencyto increase productivity with high efficiency and ensure sustainable agricultural development.This paper adopted an input-oriented data envelopment analysis (DEA) method with the assumption of variablereturns to scale to evaluate agricultural production efficiency of 100 major irrigation districts in, pure technical efficiency and scale efficiency of those irrigation districts in Northwest China were

Keywords： agricultural production efficiency     DEA model     input redundancy     irrigation districts     Northwest Arid Areas    

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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: evaluation formulas exhibit mathematical weaknesses, wherein scoring indices do not express economic efficiencyThe technique from the field of efficiency analysis, i.e., Data Envelopment Analysis (DEA), is adopted

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

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Utilization of MSWI fly ash as partial cement or sand substitute with focus on cementing efficiency and

Lei Zheng, Xingbao Gao, Wei Wang, Zifu Li, Lingling Zhang, Shikun Cheng

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 1, doi: 10.1007/s11783-019-1184-6

Abstract: Cementing efficiency factor and mortar pore structure explain the strength results.The k value (cementing efficiency) of fly ash varied between 0.36 and 0.15 for the fly ash fraction incarcinogenic risks (CR) and non-carcinogenic hazard quotient (HQ) in sensitive scenario for blended mortar utilization

Keywords： MSWI fly ash     Cementing efficiency     Health risk assessment of heavy metal     Sand replacement     Cement replacement    

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Optimization and performance prediction of a new near-zero emission coal utilization system with combined

GUAN Jian, WANG Qinhui, LI Xiaomin, LUO Zhongyang, CEN Kefa

Frontiers in Energy 2007, Volume 1, Issue 1,   Pages 113-119 doi: 10.1007/s11708-007-0013-y

Abstract: In accordance with the new near-zero emission coal utilization system with combined gasification andBased on these calculations, the whole system efficiency calculation method that complies with the massTo enhance the system efficiency, the system pressure and the gasifier carbon conversion ratio were optimizedThe results indicate that the system efficiency increases with increasing pressure and gasifier carbonThe system efficiency could reach around 62.1% when operated in these two optimum parameters.

Keywords： influence     efficiency calculation     optimum     software FactSage     transport    

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Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Frontiers of Engineering Management 2020, Volume 7, Issue 2,   Pages 259-274 doi: 10.1007/s42524-019-0080-x

Abstract: Unreasonable allocation of shared resources reduces the system efficiency and is a considerable operationalThis study proposes a data-driven, mixed two-stage network data envelopment analysis model.A data set of 58 international hotels is used to test the features of the proposed model.

Keywords： shared resource allocation     mixed two-stage system     data envelopment analysis     efficiency    

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Comparative study on the efficiency and environmental impact of two methods of utilizing polyvinyl chloride

WU Yuehui,WANG Guoliang,WANG Zhen,LIU Yi,GU Ping,SUN Dezhi

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3,   Pages 451-462 doi: 10.1007/s11783-013-0614-0

Abstract: incineration process and a vacuum pyrolysis process, for energy conversion were compared to determine their efficiencyestablished an inventory of PVC waste from incineration and vacuum pyrolysis based on process analysis, dataAs well, we analyzed the data for their uncertainty with results quantified in terms of three uncertaintiesThe coefficients of variation of the data were less than 25% and the quality of the inventory data was

Keywords： polyvinyl chloride waste     utilization     incineration process     vacuum pyrolysis process     life cycle assessment    

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Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems

Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 4,   Pages 341-347 doi: 10.15302/J-FASE-2019280

Abstract:

A four-year project, entitled “The mechanisms of fraction transformation and high use efficiencybacteria in rhizosphere and hyphosphere; (3) to estimate the biological potential of crops for high efficiencyP absorption and use; (4) to innovate new approaches for improving the efficiency of P fertilizers.

Keywords： fixation     mobilization     phosphorus fertilizer     rhizosphere     transformations     utilization    

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Recycling of heat discharged from bearing quenching

WEN Xin-lin, CI Tie-jun, ZHANG Rong-ying, WEN Peng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 472-474 doi: 10.1007/s11465-006-0062-7

Abstract: It is a novel approach for full utilization of heat energy during heat treatment, which increased 30% of the heat efficiency when compared with normal air-cooler methods that directly put exhaust air into

Keywords： process     utilization     technical     efficiency     atmosphere    

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Energy rebound effect in China’s manufacturing sector: Fresh evidence from firm-level data

Frontiers of Engineering Management   Pages 439-451 doi: 10.1007/s42524-022-0210-8

Abstract: effect refers to the phenomenon that individuals tend to consume more energy in the face of energy efficiencyTo fill this gap, we use China’s firm-level data to estimate the rebound effect in China’s manufacturing

Keywords： energy rebound effect     energy efficiency     manufacturing sector     firm-level data     China    

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Using drip irrigation of water and fertilizer for synergic development of industry and agriculture

An Di,Wang Tingjie and Jin Yong

Strategic Study of CAE 2015, Volume 17, Issue 5,   Pages 120-125

Abstract:

The low efficiency of fertilizer utilization in China has resulted in severe nonpoint source pollutionwater could be quantitatively fed to crops by using drip irrigation technology， which can increase the utilizationefficiency of fertilizer， irrigation efficiency of water and crop yields.

Keywords： fertilizer；water conservation；utilization efficiency；drip irrigation；PVC    

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Advanced purification and comprehensive utilization of yellow phosphorous off gas

Ping NING,Xiangyu WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 181-189 doi: 10.1007/s11783-014-0698-1

Abstract: Yellow phosphorous is an important raw material in the chemical industry. However, during the production of yellow phosphorous, high concentrations of carbon monoxide and other impurities are released. Without appropriate purification and removal, this off gas has potential to cause severe pollution problems once released. Purified yellow phosphorous off gas can be beneficially reused as a raw material in chemical production for synthesis of high value-added chemical reagents. In this paper, the significance of purification and reutilization of yellow phosphorous off gas are explored. The principles, processes, and main characteristics of the technologies for purification and reuse of yellow phosphorus off gas (including technical measurements of impurity reduction, relevant engineering cases, and public acceptance of the technologies) are summarized. In view of the existing problems and scientific development requirements, this paper proposes several recommendations for green production based on the concept of recycle economics. We conclude that advanced purification and comprehensive reutilization can be an effective solution for heavy pollution resulting from yellow phosphorous off gassing.

Keywords： yellow phosphorous off gas     purification     comprehensive utilization    

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Title Author Date Type Operation

The application of marine meteorological observation in tropical cyclone data assimilation

Wan Qilin,He Jinhai

Journal Article

End-use energy utilization efficiency of Nigerian residential sector

Fidelis I. ABAM,Olayinka S. OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Journal Article

Improving the efficiency and effectiveness of global phosphorus use: focus on root and rhizosphere levels

Uwe LUDEWIG, Lixing YUAN, Günter NEUMANN

Journal Article

Industrial eco-efficiency and its spatial-temporal differentiation in China

Wei YANG, Fengjun JIN, Chengjin WANG, Chen LV

Journal Article

A data envelopment analysis of agricultural technical efficiency of Northwest Arid Areas in China

Yubao WANG, Lijie SHI, Haojie ZHANG, Shikun SUN

Journal Article

Tender evaluation through efficiency analysis for public construction contracts

Stefan NIEWERTH, Peter VOGT, Markus THEWES

Journal Article

Utilization of MSWI fly ash as partial cement or sand substitute with focus on cementing efficiency and

Lei Zheng, Xingbao Gao, Wei Wang, Zifu Li, Lingling Zhang, Shikun Cheng

Journal Article

Optimization and performance prediction of a new near-zero emission coal utilization system with combined

GUAN Jian, WANG Qinhui, LI Xiaomin, LUO Zhongyang, CEN Kefa

Journal Article

Efficiency measurement for mixed two-stage nonhomogeneous network processes with shared extra intermediate

Qingxian AN, Xuyang LIU, Shijie DING

Journal Article

Comparative study on the efficiency and environmental impact of two methods of utilizing polyvinyl chloride

WU Yuehui,WANG Guoliang,WANG Zhen,LIU Yi,GU Ping,SUN Dezhi

Journal Article

Strategies for improving fertilizer phosphorus use efficiency in Chinese cropping systems

Gu FENG, Jingping GAI, Xionghan FENG, Haigang LI, Lin ZHANG, Keke YI, Jialong LV, Yiyong ZHU, Li TANG, Yilin LI

Journal Article

Recycling of heat discharged from bearing quenching

WEN Xin-lin, CI Tie-jun, ZHANG Rong-ying, WEN Peng

Journal Article

Energy rebound effect in China’s manufacturing sector: Fresh evidence from firm-level data

Journal Article

Using drip irrigation of water and fertilizer for synergic development of industry and agriculture

An Di,Wang Tingjie and Jin Yong

Journal Article

Advanced purification and comprehensive utilization of yellow phosphorous off gas

Ping NING,Xiangyu WANG

Journal Article