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Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Frontiers in Energy 2014, Volume 8, Issue 4,   Pages 426-433 doi: 10.1007/s11708-014-0314-x

Abstract: into the linear parametric varying (LPV) system, the differential mean value theorem combined with the sectornonlinearity transformation has been used.

Keywords： observer design     differential mean value theorem (DMVT)     sector nonlinearity transformation     linear matrix    

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Nanopositioning and Nonlinearity Compensation for Step Imprint Lithography Tool

LU Bing-heng, LIU Hong-zhong, DING Yu-cheng, WANG Li, QIU Zhi-hui

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 6-13 doi: 10.1007/s11465-005-0003-x

Abstract: To avoid and eliminate these nonlinearity errors, radial basis function proportional integral derivativeDriving experiments of different motion ranges prove that this nonlinearity compensation is very effective

Keywords： different     nonoscillatory     nonlinearity     integral derivative     positioning    

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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: The rebound effect refers to the phenomenon that individuals tend to consume more energy in the face of energy efficiency improvement, which reduces the expected energy-saving effect. Previous empirical studies on the rebound effect of regions and sectors do not provide microscopic evidence. To fill this gap, we use China’s firm-level data to estimate the rebound effect in China’s manufacturing subsectors, providing a detailed picture of China’s rebound effect across different sectors and different regions in 2001–2008. Results show that a partial rebound effect robustly appears in all industries, and the disparity between sectors is quite broad, ranging from 43.2% to 96.8%. As for the dynamic rebound effect of subsectors, most subsectors present an upward trend, whereas few subsectors show a clear downward trend. As a whole, the declined trend of the rebound effect is driven by the descent of minority sectors with high energy consumption and high energy-saving potential. In addition, we find that the disparity of the rebound effect across sectors is more significant than that across regions.

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

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Contribution of black carbon to nonlinearity of sorption and desorption of acetochlor on sediment

Jianqiu LIU, Yaobin ZHANG, Hong CHEN, Yazhi ZHAO, Xie QUAN

Frontiers of Environmental Science & Engineering 2009, Volume 3, Issue 1,   Pages 69-74 doi: 10.1007/s11783-008-0076-y

Abstract: In order to investigate the contribution of various black carbon (BC) contents to nonlinearity of sorptioncontent in the sediment would result in shifting the sorption-desorption isotherms from linearity to nonlinearity

Keywords： black carbon (BC)     sorption     desorption     sediment    

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State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 620-630 doi: 10.1007/s11783-012-0425-8

Abstract: The present article examines the experience of the water sector in Armenia with private sector participationThe study describes the process of the introduction of public-private partnerships in the water sector

Keywords： water governance     water privatization     public-private partnership     operational efficiency     Armenia     transition economy    

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Classical state feedback controller for nonlinear systems using mean value theorem: closed loop-FOC of PMSM motor application

Abrar ALLAG,Abdelhamid BENAKCHA,Meriem ALLAG,Ismail ZEIN,Mohamed Yacine AYAD

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 413-425 doi: 10.1007/s11708-015-0379-1

Abstract: The problem of state feedback controllers for a class of Takagi-Sugeno (T-S) Lipschitz nonlinear systems is investigated. A simple systematic and useful synthesis method is proposed based on the use of the differential mean value theorem (DMVT) and convex theory. The proposed design approach is based on the mean value theorem (MVT) to express the nonlinear error dynamics as a convex combination of known matrices with time varying coefficients as linear parameter varying (LPV) systems. Using the Lyapunov theory, stability conditions are obtained and expressed in terms of linear matrix inequalities (LMIs). The controller gains are then obtained by solving linear matrix inequalities. The effectiveness of the proposed approach for closed loop-field oriented control (CL-FOC) of permanent magnet synchronous machine (PMSM) drives is demonstrated through an illustrative simulation for the proof of these approaches. Furthermore, an extension for controller design with parameter uncertainties and perturbation performance is discussed.

Keywords： Takagi-Sugeno (T-S) fuzzy systems     sector nonlinearity     nonlinear controller     linear matrix inequality (    

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Application of nanotechnologies in the energy sector: A brief and short review

Ferric CHRISTIAN, EDITH, SELLY, Dendy ADITYAWARMAN, Antonius INDARTO

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 6-18 doi: 10.1007/s11708-012-0219-5

Abstract: Therefore, priority should be given to nano technology in the energy sector order to obtain higher efficiency

Keywords： nanotechnology     energy     batteries     fuel cell     Gr?tzel cell     solar cell    

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Carbon footprint assessment for the waste management sector: A comparative analysis of China and Japan

Lu SUN, Zhaoling LI, Minoru FUJII, Yasuaki HIJIOKA, Tsuyoshi FUJITA

Frontiers in Energy 2018, Volume 12, Issue 3,   Pages 400-410 doi: 10.1007/s11708-018-0565-z

Abstract: This paper evaluates the carbon footprint of the waste management sector to identify direct and indirect

Keywords： waste management     waste recycling     carbon footprint     hybrid LCA    

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International Conference on Recent Advances in Pollution Control and Resource Recovery for the Livestock Sector

Xinmin Zhan, Liwen Xiao

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0958-y

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Comparative analysis of energy use in China building sector: current status, existing problems and solutions

Shengyuan ZHANG, Xiu YANG, Yi JIANG, Qingpeng WEI,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 2-21 doi: 10.1007/s11708-010-0023-z

Abstract: China is the second largest energy user, yet the situation of energy use in the China building sectorThen, each sub-sector is further analyzed through international comparisons.Existing problems of energy use and solutions for energy reduction in each sub-sector are also discussed

Keywords： building energy use     lifestyle and technology     residential building     commercial building     rural building    

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Water---- and nutrient and energy---- systems in urbanizing watersheds

Rodrigo VILLARROEL WALKER, Michael Bruce BECK, Jim W. HALL

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 596-611 doi: 10.1007/s11783-012-0445-4

Abstract: Driven by considerations of sustainability, it has become increasingly difficult over the past 15–20 years — at least intellectually — to separate out the water infrastructure and water metabolism of cities from their intimately inter-related nutrient and energy metabolisms. Much of the focus of this difficulty settles on the wastewater component of the city’s water infrastructure and its associated fluxes of nutrients (N, P, C, and so on). Indeed, notwithstanding the massive volumes of these materials flowing into and out of the city, the notion of an urban nutrient infrastructure is conspicuous by its absence. Likewise, we do not tend to discuss, or conduct research into, “soilshed” agencies, or soilshed management, or Integrated Nutrient Resources Management (as opposed to its most familiar companion, Integrated Water Resources Management, or IWRM). The paper summarizes some of the benefits (and challenges) deriving from adopting this broader, multi-sectoral “systems” perspective on addressing water-nutrient-energy systems in city-watershed settings. Such a perspective resonates with the growing interest in broader policy circles in what is called the “water-food-energy security nexus”. The benefits and challenges of our Multi-sectoral Systems Analysis (MSA) are illustrated through computational results from two primary case studies: Atlanta, Georgia, USA; and London, UK. Since our work is part of the International Network on Cities as Forces for Good in the Environment (CFG; see www.cfgnet.org), in which other case studies are currently being initiated — for example, on Kathmandu, Nepal — we close by reflecting upon these issues of water-nutrient-energy systems in three urban settings with quite different styles and speeds of development.

Keywords： cities     climate change     energy sector     nutrient sector     systems analysis     resource recovery     water-food-energy    

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Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 297-307 doi: 10.1007/s11709-012-0162-x

Abstract: The geometric nonlinearity, material nonlinearity, high temperature creep, and temperature rate of change

Keywords： creep     plane steel frame     fire     finite element method     geometric nonlinearity    

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Transformation of triclosan by a novel cold-adapted laccase from

Yuanyuan Shi, Deyang Kong, Jiayang Liu, Junhe Lu, Xiaoming Yin, Quansuo Zhou

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 3, doi: 10.1007/s11783-017-0927-5

Abstract: This work investigated the transformation of triclosan (TCS) by laccase produced by a pathogen isolatedTransformation products of TCS were analyzed by mass spectrometry and it was revealed that TCS dimerswidely presented in natural environment, this study also revealed an important pathway involved in the transformation

Keywords： Laccase     Botrytis cinerea     Triclosan     Transformation     Kinetics    

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Cementing technology of gas wells with complex pressure on Northwest Sichuan

Zhou Shiming,Zeng Yijin

Strategic Study of CAE 2010, Volume 12, Issue 10,   Pages 50-55

Abstract: with techniques such as pump directly with injection opposite for intermediate casing cementing and sector-by-sector

Keywords： complex strata pressure     thin annular     gas migration     pretermission     latex     sector-by-sector surcharging    

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FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1,   Pages 1-3 doi: 10.15302/J-FASE-2023491

Abstract: FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Keywords： TRANSFORMATION     SYSTEMS     FOOD     CONCEPTS     MECHANISMS    

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Title Author Date Type Operation

Observer design for induction motor: an approach based on the mean value theorem

Mohamed Yacine HAMMOUDI,Abdelkarim ALLAG,Mohamed BECHERIF,Mohamed BENBOUZID,Hamza ALLOUI

Journal Article

Nanopositioning and Nonlinearity Compensation for Step Imprint Lithography Tool

LU Bing-heng, LIU Hong-zhong, DING Yu-cheng, WANG Li, QIU Zhi-hui

Journal Article

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

Journal Article

Contribution of black carbon to nonlinearity of sorption and desorption of acetochlor on sediment

Jianqiu LIU, Yaobin ZHANG, Hong CHEN, Yazhi ZHAO, Xie QUAN

Journal Article

State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Journal Article

Classical state feedback controller for nonlinear systems using mean value theorem: closed loop-FOC of PMSM motor application

Abrar ALLAG,Abdelhamid BENAKCHA,Meriem ALLAG,Ismail ZEIN,Mohamed Yacine AYAD

Journal Article

Application of nanotechnologies in the energy sector: A brief and short review

Ferric CHRISTIAN, EDITH, SELLY, Dendy ADITYAWARMAN, Antonius INDARTO

Journal Article

Carbon footprint assessment for the waste management sector: A comparative analysis of China and Japan

Lu SUN, Zhaoling LI, Minoru FUJII, Yasuaki HIJIOKA, Tsuyoshi FUJITA

Journal Article

International Conference on Recent Advances in Pollution Control and Resource Recovery for the Livestock Sector

Xinmin Zhan, Liwen Xiao

Journal Article

Comparative analysis of energy use in China building sector: current status, existing problems and solutions

Shengyuan ZHANG, Xiu YANG, Yi JIANG, Qingpeng WEI,

Journal Article

Water---- and nutrient and energy---- systems in urbanizing watersheds

Rodrigo VILLARROEL WALKER, Michael Bruce BECK, Jim W. HALL

Journal Article

Finite element analysis of creep for plane steel frames in fire

Hui ZHU, Yuching WU

Journal Article

Transformation of triclosan by a novel cold-adapted laccase from

Yuanyuan Shi, Deyang Kong, Jiayang Liu, Junhe Lu, Xiaoming Yin, Quansuo Zhou

Journal Article

Cementing technology of gas wells with complex pressure on Northwest Sichuan

Zhou Shiming,Zeng Yijin

Journal Article

FOOD SYSTEMS TRANSFORMATION: CONCEPTS, MECHANISMS AND PRACTICES

Journal Article