Results 81 to 90 of about 3,261,865 (370)

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

International Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam, Anthony Siming Chen, Guido Herrmann   +2 more
wiley   +1 more source

Prevalence and risk factors for myopia among school children in Aba, Nigeria

African Vision and Eye Health, 2017
Aim: To study the prevalence of myopia among school children in Aba, Nigeria. Methods: This cross-sectional study was conducted in public and private (primary and secondary) schools.
Uchenna C. Atowa, Alvin J. Munsamy, Samuel O. Wajuihian   +2 more
doaj   +1 more source

Development and Validation of a Screening Tool for The Identification of Refractive Errors Among School Going Children In Tamil Nadu, India

National Journal of Community Medicine, 2023
Background: The inability to focus light onto the retina, known as refractive error, is a significant cause of correctable visual impairment. Unfortunately, students' ocular complaints often go unnoticed due to a lack of awareness. To address this issue,
Sudharsan V, Prateeksha Dawn Davidson, Lakshmi Kandhan V, Amudha VP, Rita Hepsi Rani M   +4 more
doaj   +1 more source

Age-Specific Prevalence of Visual Impairment and Refractive Error in Children Aged 3-10 Years in Shanghai, China.

Investigative Ophthalmology and Visual Science, 2016
Purpose We assessed changes in age-specific prevalence of refractive error at the time of starting school, by comparing preschool and school age cohorts in Shanghai, China.
Yingyan Ma, X. Qu, Xiao-feng Zhu, Xun Xu, Jianfeng Zhu, P. Sankaridurg, Senlin Lin, Lina Lu, Rong Zhao, Ling Wang, Huijing Shi, Hui Tan, Xiaofang You, H. Yuan, Sifei Sun, Mingjin Wang, Xiangui He, H. Zou, N. Congdon   +18 more
semanticscholar   +1 more source

Cost-effectiveness of eye care services in Zambia. [PDF]

, 2014
OBJECTIVE: To estimate the cost-effectiveness of cataract surgery and refractive error/presbyopia correction in Zambia. METHODS: Primary data on costs and health related quality of life were collected in a prospective cohort study of 170 cataract and 113
Bozzani, Fiammetta M, Gheorghe, Adrian, Gilbert, Clare, Griffiths, Ulla K, Mwenge, Lawrence   +4 more
core   +2 more sources

Neural Network Adaptive Control With Long Short‐Term Memory

International Journal of Adaptive Control and Signal Processing, EarlyView.
ABSTRACT In this study, we propose a novel adaptive control architecture that provides dramatically better transient response performance compared to conventional adaptive control methods. This is accomplished by the synergistic employment of a traditional adaptive neural network (ANN) controller and a long short‐term memory (LSTM) network.
Emirhan Inanc, Abdullah Habboush, Yigit Gurses, Yildiray Yildiz, Anuradha M. Annaswamy   +4 more
wiley   +1 more source

Evaluation of the Agreement of Advanced Corneal Explorer with Pentacam and Orbscan in Myopic Individuals with Healthy Corneas [PDF]

مجله دانشگاه علوم پزشکی گرگان
Background and Objective: Evaluating the agreement among various corneal imaging devices is crucial due to their varying technologies in diagnosing corneal parameters.
Mohammad-Hosein Validad, Hava Shafiee, Monireh Mahjoob, Tahereh Rakhshandadi, Hadi Ostadimoghaddam, Abbas-Ali Yekta, Javad Heravian Shandiz, Neda Nakhjavanpour, Sara Farsi   +8 more
doaj  

Meta-analysis of gene–environment-wide association scans accounting for education level identifies additional loci for refractive error

Nature Communications, 2016
Myopia is the most common human eye disorder and it results from complex genetic and environmental causes. The rapidly increasing prevalence of myopia poses a major public health challenge.
Q. Fan, V. Verhoeven, R. Wojciechowski, V. Barathi, P. Hysi, J. Guggenheim, René Höhn, V. Vitart, A. Khawaja, K. Yamashiro, S. M. Hosseini, T. Lehtimäki, Yi Lu, T. Haller, Jing Xie, C. Delcourt, M. Pirastu, J. Wedenoja, P. Gharahkhani, C. Venturini, M. Miyake, A. Hewitt, Xiaobo Guo, J. Mazur, J. Huffman, K. Williams, O. Polašek, H. Campbell, I. Rudan, Z. Vatavuk, James F. Wilson, Peter K. Joshi, George Mcmahon, Beate St Pourcain, David M. Evans, Claire L. Simpson, Tae‐Hwi Schwantes‐An, R. Igo, A. Mirshahi, A. Cougnard-Grégoire, C. Bellenguez, M. Blettner, O. Raitakari, M. Kähönen, I. Seppälä, T. Zeller, T. Meitinger, J. Ried, C. Gieger, L. Portas, E. V. van Leeuwen, N. Amin, A. Uitterlinden, F. Rivadeneira, A. Hofman, J. Vingerling, Y. X. Wang, Xu Wang, Eileen Tai-Hui Boh, M. Ikram, C. Sabanayagam, Preeti Gupta, Vincent Y Tan, Lei Zhou, C. Ho, Wan'e Lim, R. Beuerman, Rosalynn Siantar, E. Tai, E. Vithana, E. Mihailov, C. Khor, C. Hayward, R. Luben, P. Foster, B. Klein, R. Klein, H. Wong, P. Mitchell, A. Metspalu, T. Aung, T. Young, M. He, O. Pärssinen, C. V. van Duijn, Jie Jin Wang, Cathy Williams, J. Jonas, Y. Teo, D. Mackey, K. Oexle, N. Yoshimura, A. Paterson, N. Pfeiffer, T. Wong, P. Baird, D. Stambolian, Joan E. Bailey Wilson, Ching-Yu Cheng, C. Hammond, C. Klaver, S. Saw, Jugnoo S. Jean-François John P. Nicholas J. George Davey Rahi Korobelnik Kemp Timpson Smith Craig Burdon Fo, J. Rahi, J. Korobelnik, J. Kemp, N. Timpson, G. Smith, J. Craig, K. Burdon, R. Fogarty, S. Iyengar, E. Chew, Sarayut Janmahasatian, N. Martin, S. Macgregor, Liang Xu, M. Schache, V. Nangia, S. Panda‐Jonas, A. Wright, J. Fondran, J. Lass, Sheng Feng, J. Zhao, K. Khaw, N. Wareham, T. Rantanen, J. Kaprio, C. Pang, L. J. Chen, P. Tam, V. Jhanji, A. Young, A. Döring, L. Raffel, M. Cotch, Xiaohui Li, S. Yip, M. Yap, G. Biino, S. Vaccargiu, M. Fossarello, B. Fleck, S. Yazar, J. Tideman, M. Tedja, M. DeAngelis, M. Morrison, L. Farrer, Xiangtian Zhou, Wei Chen, N. Mizuki, A. Meguro, Kari-Matti Mäkelä   +154 more
semanticscholar   +1 more source

Hydrogel‐Based Capacitive Sensor Model for Ammonium Monitoring in Aquaculture

Advanced Engineering Materials, EarlyView.
Traditional techniques for monitoring aquaculture water quality, particularly ammonium levels, harm fish. This work presents a novel capacitive sensor with an ionic hydrogel transducer to monitor ammonium concentration in real time based on the ammonium‐induced hydrogel dissociation and osmotic pressure. Monitoring aquaculture water quality, especially
Mohammad Mirzaee, Mahdi Askari‐sedeh, Ali Zolfagharian, Mostafa Baghani   +3 more
wiley   +1 more source

Five-Year Progression of Refractive Errors and Incidence of Myopia in School-Aged Children in Western China

Journal of Epidemiology, 2016
Background: To determine the change in refractive error and the incidence of myopia among school-aged children in the Yongchuan District of Chongqing City, Western China.
Wen-Jun Zhou
doaj   +1 more source