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Spatial and temporal variation of malaria incidence in children under 10 years in a pyrethroid-resistant vector area in southern Benin

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Malaria Journal 2025年第1期24卷 1-12页

作者： Dangbenon, Edouard Atchadé, Mintodê Nicodème Akogbéto, Martin C. Hounkonnou, Mahouton N. Assongba, Landry Akpovi, Hilaire Kulkarni, Manisha A. Protopopoff, Natacha Cook, Jackie Accrombessi, Manfred Centre de Recherche Entomologique de Cotonou Cotonou Benin Institut Pierre Richet (IPR)/Institut National de Santé Publique (INSP) Bouaké Cote d'Ivoire International Chair in Mathematical Physics and Applications (ICMPA-UNESCO Chair) University of Abomey-Calavi Cotonou 072BP50 Benin National Higher School of Mathematical Engineering and Modeling Technologies Engineering and Mathematics UNSTIM National University of Sciences Abomey Benin Faculté Des Sciences Et Techniques Université d’Abomey-Calavi Abomey-Calavi Benin Faculty of Infectious and Tropical Diseases Disease Control Department London School of Hygiene and Tropical Medicine London WC1E 7HT United Kingdom School of Epidemiology & Public Health Faculty of Medicine University of Ottawa Ottawa ON Canada Medical Research Council (MRC) International Statistics and Epidemiology Group London School of Hygiene and Tropical Medicine London WC1E 7HT United Kingdom Malaria International Department Population Services International (PSI) Cotonou Benin

Background: Spatial and temporal identification of malaria-endemic areas is a key component of vector-borne disease control. Strategies to target the most vulnerable populations, the periods of high transmission and the most affected geographical areas, should make vector-borne disease control and prevention programmes more cost-effective. The present study focuses on the spatial and temporal dynamics of malaria cases and the exogenous factors influencing the transmission in an area with pyrethroid-resistant mosquito vector populations. Methods: A prospective cohort study of 1806 children under 10 years of age was conducted over 20 months to assess the risk of malaria incidence in the Cove-Zagnanado-Ouinhi (CoZO) health zone located in southern Benin. Childhood malaria data were used to identify malaria hotspots according to months of follow-up using spatial scanning methods based on the Kulldoff algorithm. Stability scores were calculated by season to assess incidence heterogeneity. Incidence values by month were aggregated with meteorological data;and demographic data were merged to detect cross-correlation between incidence and meteorological variables. Generalized equation estimators were chosen for their ability to handle intra-group correlation, ensuring robust and interpretable results despite the complexity of the data to identify factors explaining the spatio-temporal heterogeneity of malaria incidence in the CoZO health zone. Results: Malaria incidence ranged from 1.41 (95% IC 0.96–2.08) to 13.91 (95% IC 12.22–15.84) cases per 100 child-months. Spatial heterogeneity in malaria transmission hotspots was observed over the study period, with relative risks ranging from 1.59 (p-value = 0.032) to 16.24 (p-value = 0.002). There was a significant negative association (correlation coefficient = − 0.56) between malaria incidence and temperature;and a slightly positive association (correlation coefficient = 0.58) between malaria incidence and rainfall. A significant

关键词： Benin Hotspots Malaria incidence Spatial and temporal heterogeneity

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Study on an Adaptive Algorithm for Time-varying System 36

Study on an Adaptive Algorithm for Time-varying System

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第36届中国控制会议

作者： KIM KwangHo GENG Yanfeng Yue Yaobin College of Information & Control Engineering China University of Petroleum(East China) Automation Engineering Faculty Kimchaek University of TechnologyCAS College of Automation & Electronic Engineering Qingdao University of Science & Technology

ISBN: (数字)9789881563934

ISBN: (纸本)9781538629185

In this paper,we presented the derivation of an adaptive algorithm for time-varying system and verified that it satisfied convergence *** on the concept of distance in parameter space,we proposed a robust identification method which identified the smallest set of discrete transfer functions under the assumption that its parameters were time-varying and described derivation of an adaptive law based on verification and update algorithm of the identified model *** also described that the proposed algorithm satisfied the convergence properties through numerical simulation.

关键词： adaptive algorithm time-varying system parameter estimation robust identification

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Filament geometrical model and nozzle trajectory analysis in the fused deposition modeling process

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Journal of Zhejiang University-Science A(Applied Physics & engineering) 2009年第3期10卷 370-376页

作者： Yu-zhen JIN Jia-fan ZHANG Ying WANG Zu-chao ZHU State Key Laboratory of Fluid Power Transmission and Control Zhejiang University Hangzhou 310027 China Faculty of Mechanical Engineering & Automation Zhejiang Sci- Tech University Hangzhou 310018 China

The geometrical model of the filament during the fused deposition modeling (FDM) process was firstly proposed based on three different models, tractrix, parabola, and catenary. Comparing with the actual measured filament curves on the Stratasys 1600 FDM machine, it is indicated that the tractrix model had the best agreement with the actual measured curves. With the analytical simulation, the nozzle trajectories in the straight-line deposition road, circle road, and arbitrary continuous curve road were deduced, according to the traxtric based geometrical model of the filament.

关键词： Fused deposition modeling （FDM） Filament geometrical model Nozzle trajectory

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Trajectory tracking of two wheeled mobile robot using higher order sliding mode control

Trajectory tracking of two wheeled mobile robot using higher...

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2013 1st IEEE International Conference on control, Computing, Communication and Materials, ICCCCM 2013

作者： Aithal, Himajit Janardhanan, S. Control and Automation Electrical Engineering Department Indian Institute of Technology Delhi India Faculty of Control and Automation Electrical Engineering Department Indian Institute of Technology Delhi India

This paper presents a robust control method for trajectory tracking of a two wheeled mobile robot. A second order sliding mode control methodology is used to ensure continuity in the torque inputs, in addition to dist... 详细信息

ISBN: (纸本)9781479913756

关键词： Disturbance rejection

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Data-Driven Process Monitoring and Fault Tolerant control in Wind Energy Conversion System with Hydraulic Pitch System

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Journal of Shanghai Jiaotong university(Science) 2015年第4期20卷 489-494页

作者：王凯罗浩 KRUEGER M DING S X 杨旭 JEDSADA S Institute for Automatic Control and Complex Systems University of Duisburg-Essen Baotou Vocational & Technical Collage School of Automation and Electrical Engineering University of Science and Technology Beijing Department of Electrical Engineering Faculty of Engineering Burapha University

Wind energy is one of the widely applied renewable energies in the world. Wind turbine as the main wind energy converter at present has very complex technical system containing a huge number of components,actuators and sensors. However, despite of the hardware redundancy, sensor faults have often affected the wind turbine normal operation and thus caused energy generation loss. In this paper, aiming at the wind turbine hydraulic pitch system, data-driven design of process monitoring(PM) and diagnosis has been realized in the wind turbine benchmark. Fault tolerant control(FTC) strategies focused on sensor faults have also been presented here, where with the implementation of soft sensor the sensor fault can be handled and the performance of the system is improved. The performance of this method is demonstrated with the wind turbine benchmark provided by Math Works.

关键词： data-driven process monitoring(PM) fault tolerant control(FTC) soft sensor wind turbine

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Virtual sensors based on neural networks with orthogonal activation functions 2

Virtual sensors based on neural networks with orthogonal act...

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2nd IFAC Conference on control Systems Design, CSD 2003

作者： Jovankovic, J. Zalman, M. Department of Automation and Control Faculty of Electrical Engineering Slovak University of Technology Slovakia

The paper deals with an application of neural networks with orthogonal activation functions (OAFNN) in the sensorless field oriented control structure with induction motor (lM). The OAFNN has been trained to estimate rotor speed and has been used in the speed control structure as the speed virtual sensor. The Chebychev orthogonal polynomials of fourth order were applied as activation functions for each input (is2' U;2)' The speed structure of servo drive with IM has been realized on the dSPACE DSII02 development system with 1,lkW IM. © 2003 IFAC.

关键词： Orthogonal functions

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A Robust PID Autotuning Method for Steam/Water Loop in Large Scale Ships

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IFAC-PapersOnLine 2018年第4期51卷 462-467页

作者： Zhao, Shiquan Ionescu, Clara M. De Keyser, Robin Liu, Sheng Ghent University Faculty of Engineering and Architecture Research group on Dynamical Systems Control Technologiepark 914 ZwijnaardeB9052 Belgium Harbin Engineering University College of Automation China

During the voyage of the ship, disturbances from the sea dynamics are frequently changing, and the ship's operation mode is also varied. Hence, it is necessary to have a good controller for steam/water loop, as the control task is becoming more challenging in large scale ships. In this paper, a robust proportional-integral-derivative (PID) autotuning method is presented and applied to the steam/water loop based on single sine tests for every sub-loop in the steam/water loop. The controller is obtained during which the user-defined robustness margins are guaranteed. Its performance is compared against other PID autotuners, and results indicate its superiority. © 2018

关键词： Proportional control systems Robustness (control systems) Ships Steam Steam power plants Two term control systems Autotuner Modulus margins Multi output Multiinput Steam/water

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Model Identification and control of Electromagnetic Actuation in Continuous Casting Process With Improved Quality

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IEEE/CAA Journal of Automatica Sinica 2023年第1期10卷 203-215页

作者： Isabela Birs Cristina Muresan Dana Copot Clara Ionescu Research Group of Dynamical Systems and Control Faculty of Engineering and ArchitectureGhent University and with EEDT Decision&ControlFlanders Make ConsortiumTech Lane Science Park 125 and 131B-9052 GhentBelgium.I.Birs the Automation Department Faculty of Automation and Applied InformaticsTechnical University of Cluj-NapocaRomania IEEE

This paper presents an original theoretical framework to model steel material properties in continuous casting line process. Specific properties arising from non-Newtonian dynamics are herein used to indicate the natural convergence of distributed parameter systems to fractional order transfer function models. Data driven identification from a real continuous casting line is used to identify model of the electromagnetic actuator device to control flow velocity of liquid steel. To ensure product specifications, a fractional order control is designed and validated on the system. A projection of the closed loop performance onto the quality assessment at end production line is also given in this paper.

关键词： Electromagnetic actuator fractional order control fractional order system model non-Newtonian material

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UML-PA as an engineering model for distributed process automation

UML-PA as an engineering model for distributed process autom...

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作者： Katzke, Uwe Vogel-Heuser, Birgit Automation and Process Control Engineering Faculty of Electrical Information and Media Engineering University of Wuppertal 42119 Wuppertal Germany

ISBN: (纸本)008045108X

Common engineering approaches and modeling approaches from software engineering are brought together. For the domain of process automation an implementation oriented approach for an object oriented software development for heterogeneous distributed systems is introduced. Model elements for control are added to UML as well as small-scale patterns for plant automation. Besides large-scale patterns are introduced as well as implementational models. The adoption of UML regarding applied diagrams and stereotypes for process automation will be introduced and evaluated. Copyright © 2005 IFAC.

关键词： Programmable logic controllers

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3D virtual environments for PLC programming education and training

3D virtual environments for PLC programming education and tr...

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19th Annual European Simulation and Modelling Conference, ESM 2005

作者： De Magalhães, Antonio Pessoa Vigário, Bruno T. Freitas, Francisco T. Automation Instrumentation and Control Group Department of Mechanical Engineering and Industrial Management Faculty of Engineering University of Porto Portugal

ISBN: (纸本)9077381228

The paper presents the development of real-time visual simulation systems for PLC programming education and training. This scientific area is being worked for several years at the automation group to which the authors are affiliated. Yet, recent developments in computer graphics engineering are introducing dramatic changes in the area. The most appealing and challenging is to move from 2D to 3D virtual worlds. However, a much more complex modelling, a sophisticated technological integration and the real-time nature of the application introduce significant difficulties. The paper reveals how modern but low cost computer technologies successfully handle such difficulties. Two automated warehouses are used to illustrate the design of 3D virtual systems.

关键词： Virtual reality

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