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reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 759-768 doi: 10.1631/FITEE.1500053

Abstract: This paper investigates the trajectory tracking control for a class of nonlinear systems with timevaryingFirst, the definition of the tracking control is given.Second, the performance analysis of the closed-loop system including this unified model, referencethe closed-loop system tracks the given reference signal in the sense.The reference model adopted here is modified to be more flexible.

Keywords： H∞     reference tracking     Nonlinear system     State feedback control     Time-varying delays     Unified model    

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Cholera: an overview with reference to the Yemen epidemic

Ali A. Rabaan

Frontiers of Medicine 2019, Volume 13, Issue 2,   Pages 213-228 doi: 10.1007/s11684-018-0631-2

Abstract: Cholera is a secretory diarrhoeal disease caused by infection with , primarily the O1 El Tor biotype. There are approximately 2.9 million cases in 69 endemic countries annually, resulting in 95 000 deaths. Cholera is associated with poor infrastructure and lack of access to sanitation and clean drinking water. The current cholera epidemic in Yemen, linked to spread of O1 (Ogawa serotype), is associated with the ongoing war. This has devastated infrastructure and health services. The World Health Organization had estimated that 172 286 suspected cases arose between 27th April and 19th June 2017, including 1170 deaths. While there are three oral cholera vaccines prequalified by the World Health Organization, there are issues surrounding vaccination campaigns in conflict situations, exacerbated by external factors such as a global vaccine shortage. Major movements of people complicates surveillance and administration of double doses of vaccines. Cholera therapy mainly depends on rehydration, with use of antibiotics in more severe infections. Concerns have arisen about the rise of antibiotic resistance in cholera, due to mobile genetic elements. In this review, we give an overview of cholera epidemiology, virulence, antibiotic resistance, therapy and vaccines, in the light of the ongoing epidemic in Yemen.

Keywords： cholera     epidemic     multi-drug resistant     catechin     luteolin     ToxT     CTX&Fcy    

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A reliable and practical reference objective for the deviation diagnosis of energy system parameters

Liping LI, Zheng LI,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 440-445 doi: 10.1007/s11708-009-0051-8

Abstract: The core objective to optimize a complex energy system is to set the reference target to guide the parameter

Keywords： energy system     case-based     optimization     power unit operation     performance    

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Output tracking control of mobile manipulators based on dynamical sliding-mode control

WUYuxiang, FENG Ying, HU Yueming

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 110-115 doi: 10.1007/s11465-007-0019-5

Abstract: Moreover, a design method of the dynamical sliding-mode controller that is applied to the output tracking

Keywords： lower-dimensional     nonlinear     trajectory     tracking     diffeomorphism    

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Management strategies of marine food resources under multiple stressors with particular reference of

Qisheng TANG

Frontiers of Agricultural Science and Engineering 2014, Volume 1, Issue 1,   Pages 85-90 doi: 10.15302/J-FASE-2014021

Abstract:

In this study two main management strategies are discussed: one is to develop resource conservation-based capture fisheries, and the other is to develop environmentally friendly aquaculture. During the resource recovery period, the development of environmentally friendly aquaculture should be encouraged, especially in integrated multi-trophic aquaculture, which is adaptive, efficient and sustainable. For future development and better understanding the ecosystem, it is necessary to further strengthen basic research.

Keywords： marine     ecosystem     management strategies     food resources     Yellow Sea    

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Scientific Connotation and Development Strategy of Standard Reference Data

Fang Xiang, Yu Lianchao, Ren Siyuan, Xiong Xingchuang

Strategic Study of CAE 2023, Volume 25, Issue 3,   Pages 230-238 doi: 10.15302/J-SSCAE-2023.07.021

Abstract:

Standard reference data is a type of high-quality scientific data andResearch on the standard reference data in China lags significantly behind the advanced world levelexplores the scientific connotation, extended characteristics, and strategic values of standard referenceMoreover, the current status of standard reference data development in China is viewed, key problemsFurthermore, the study recommends establishing a sound policy system for standard reference data

Keywords： scientific data     metrological traceability     standardization     standard reference data    

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Wheat research and breeding in the new era of a high-quality reference genome

Rudi APPELS

Frontiers of Agricultural Science and Engineering 2019, Volume 6, Issue 3,   Pages 225-232 doi: 10.15302/J-FASE-2019265

Abstract:

The publications of the International Wheat Genome Sequencing Consortium (IWGSC) released in August 2018 are reviewed and placed into the context of developments arising from the availability of the high-quality wheat genome assembly.

Keywords： assembly technology     molecular markers     polyploidy     transcript networks     wheat genome    

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A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 277-286 doi: 10.1007/s11709-010-0072-8

Abstract: This paper presents a model reference adaptive control based method to identify the parameter of a simplified

Keywords： real-time testing     actuator delay     compensation     adaptive control     MIT rule     discrete transfer function    

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Comparison of reference values for immune recovery between event-free patients receiving haploidentical

Xuying Pei, Xiangyu Zhao, Yu Wang, Lanping Xu, Xiaohui Zhang, Kaiyan Liu, Yingjun Chang, Xiaojun Huang

Frontiers of Medicine 2018, Volume 12, Issue 2,   Pages 153-163 doi: 10.1007/s11684-017-0548-1

Abstract:

To establish optimal reference values for recovered immune cell subsets, we prospectively investigatedResults suggest that patients with an IR comparable to the reference values display superior survivalWe suggest that data from this recipient cohort should be used as reference values for post-transplant

Keywords： immune reconstitution     hematopoietic stem cell transplantation     event-free patients     reference range    

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Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances

Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,

Engineering doi: 10.1016/j.eng.2023.05.017

Abstract: visual servoing (IBVS) method based on a velocity observer for an unmanned aerial vehicle (UAV) for trackingThe depth model ensures image feature accuracy and image trajectory smoothness in rotating target trackingComparative simulations and multistage experiments are conducted to illustrate the tracking stability, anti-disturbance ability, and tracking robustness of the proposed method with a dynamic rotating target

Keywords： Unmanned aerial vehicle     Visual servoing     Velocity observer     Target tracking    

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Wheel tracking methods to evaluate moisture sensitivity of hot-mix asphalt mixtures

Jie HAN,Harihar Shiwakoti

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 30-43 doi: 10.1007/s11709-016-0318-1

Abstract: This research focused on wheel tracking devices to evaluate moisture sensitivity.The Asphalt Pavement Analyzer (APA) and the Hamburg Wheel Tracking Device (HWTD) were used for this research

Keywords： hot-mix asphalt     moisture sensitivity     rutting     wheel tracking test    

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Fractional order extremum seeking approach for maximum power point tracking of photovoltaic panels

Ammar NEÇAIBIA,Samir LADACI,Abdelfatah CHAREF,Jean Jacques LOISEAU

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 43-53 doi: 10.1007/s11708-014-0343-5

Abstract: In this paper, an integrated framework was proposed, which achieved both maximum power point tracking

Keywords： (ES)     fractional order control (FOC)     fractional calculus     photovoltaic (PV) panel     maximum power point tracking    

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Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems

Mao-peng RAN, Li-hua XIE, Jun-cheng LI

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 1,   Pages 76-87 doi: 10.1631/FITEE.1800557

Abstract:

Our study is concerned with the time-varying formation tracking problem for second-order multi-agentexternal disturbance, and the states of the followers form a predefined time-varying formation while trackingThen we propose a novel ESO based time-varying formation tracking protocol.is proved that, under the proposed protocol, the ESO estimation error and the time-varying formation tracking

Keywords： Multi-agent system     Time-varying formation     Formation tracking     Nonlinear dynamics     Extended state observer    

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Realization of an Optimal Dynamic Geodetic Reference Frame in China: Methodology and Applications Article

Pengfei Cheng, Yingyan Cheng, Xiaoming Wang, Suqin Wu, Yantian Xu

Engineering 2020, Volume 6, Issue 8,   Pages 879-897 doi: 10.1016/j.eng.2020.08.004

Abstract: China Geodetic Coordinate System 2000 (CGCS2000) has been used for several years as a formal published referenceDifferent strategies can be adopted for the realization of an optimal reference frame.study, a statistic method called “supervised clustering”is applied to the selection of GNSS reference

Keywords： Optimal reference frame realization     China Plate Model     CGCS2000 maintenance     Nonlinear movement modeling    

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A comprehensive simulator for assessing the reliability of a photovoltaic panel peak power tracking system

Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 170-179 doi: 10.1007/s11708-015-0353-y

Abstract: When designing a maximum power point tracking (MPPT) algorithm, it is often difficult to correctly predict

Keywords： photovoltaic module     DC-DC converter     design     maximum power point tracking (MPPT) card     microprocessor    

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Title Author Date Type Operation

reference tracking control design for a class of nonlinear systems with time-varying delays

Mei-qin LIU,Hai-yang CHEN,Sen-lin ZHANG

Journal Article

Cholera: an overview with reference to the Yemen epidemic

Ali A. Rabaan

Journal Article

A reliable and practical reference objective for the deviation diagnosis of energy system parameters

Liping LI, Zheng LI,

Journal Article

Output tracking control of mobile manipulators based on dynamical sliding-mode control

WUYuxiang, FENG Ying, HU Yueming

Journal Article

Management strategies of marine food resources under multiple stressors with particular reference of

Qisheng TANG

Journal Article

Scientific Connotation and Development Strategy of Standard Reference Data

Fang Xiang, Yu Lianchao, Ren Siyuan, Xiong Xingchuang

Journal Article

Wheat research and breeding in the new era of a high-quality reference genome

Rudi APPELS

Journal Article

A model reference adaptive control based method for actuator delay estimation in real-time testing

Cheng CHEN, James M. RICLES

Journal Article

Comparison of reference values for immune recovery between event-free patients receiving haploidentical

Xuying Pei, Xiangyu Zhao, Yu Wang, Lanping Xu, Xiaohui Zhang, Kaiyan Liu, Yingjun Chang, Xiaojun Huang

Journal Article

Dynamic Target Tracking of Unmanned Aerial Vehicles Under Unpredictable Disturbances

Yanjie Chen,Yangning Wu,Limin Lan,Hang Zhong,Zhiqiang Miao,Hui Zhang,Yaonan Wang,

Journal Article

Wheel tracking methods to evaluate moisture sensitivity of hot-mix asphalt mixtures

Jie HAN,Harihar Shiwakoti

Journal Article

Fractional order extremum seeking approach for maximum power point tracking of photovoltaic panels

Ammar NEÇAIBIA,Samir LADACI,Abdelfatah CHAREF,Jean Jacques LOISEAU

Journal Article

Time-varying formation tracking for uncertain second-order nonlinearmulti-agent systems

Mao-peng RAN, Li-hua XIE, Jun-cheng LI

Journal Article

Realization of an Optimal Dynamic Geodetic Reference Frame in China: Methodology and Applications

Pengfei Cheng, Yingyan Cheng, Xiaoming Wang, Suqin Wu, Yantian Xu

Journal Article

A comprehensive simulator for assessing the reliability of a photovoltaic panel peak power tracking system

Nabil KAHOUL,Mourad HOUABES,Ammar NEÇAIBIA

Journal Article