Edit Profile (opens in new tab) Liu, Zhenyu Co-Author Distance Author ID: liu.zhenyu Published as: Liu, Zhenyu; Liu, Zhen-Yu Documents Indexed: 52 Publications since 1991, including 1 Book and 3 Additional arXiv Preprints Co-Authors: 85 Co-Authors with 47 Joint Publications 3,305 Co-Co-Authors all top 5 Co-Authors 1 single-authored 14 Deng, Yongbo 11 Wu, Yihui 8 Korvink, Jan G. 7 Tan, Jianrong 4 Peng, Xiang 4 Qiu, Chan 3 Liang, Shi 3 Liu, Yongshun 3 Modarres, Reza 3 Zhang, Ping 2 Bu, Wanghui 2 Chen, Tao 2 Gao, Wei 2 Jiang, Shaofei 2 Li, Jiquan 2 Liu, Geng 2 Wu, Di 2 Zhang, Weihong 2 Zhou, Teng 2 Zhu, Jihong 1 Bai, Yue 1 Chen, Guohai 1 Chen, Shaolin 1 Cheng, Jin 1 Cheng, Jin 1 Chu, Wesley W. 1 Dong, Huanhe 1 Duan, Guifang 1 Duan, Huigao 1 Feng, Yuan 1 Folk, Chris 1 Gao, Ge 1 Gao, Qingyong 1 Gao, Shuming 1 Gao, Yuan 1 Geier, Martin 1 Guo, Yuchen 1 Guo, Yuliang 1 Ho, Chihming 1 Hu, Bin 1 Huang, Adam 1 Huang, Ruo-yua 1 Ji, Xiangyang 1 Ji, Yuan 1 Jia, Lei 1 Jiang, Haihua 1 Kang, Huanyu 1 Krafczyk, Manfred 1 Li, Guoyin 1 Li, Qingya 1 Li, Xiaoyu 1 Liu, Chaobin 1 Liu, Daxin 1 Liu, Han 1 Liu, Yonghui 1 Ma, Xiaobing 1 Mager, Dario 1 Ng, Eddie-Yin-Kwee 1 Pados, Dimitrios A. 1 Ren, Jirong 1 Shi, Hang 1 Shi, Jinglun 1 Song, Chao 1 Tin-Loi, Francis 1 Wang, Dongsheng 1 Wang, Gang 1 Wang, Qihan 1 Wang, Tao 1 Wang, Yasi 1 Wen, Liping 1 Wu, Huaping 1 Wu, Junfeng 1 Xie, Jun 1 Xie, Tinggui 1 Xu, Yingjie 1 Xuan, Ming 1 Yang, Hongwei 1 Yang, Jun 1 Yang, Mengta 1 Yang, Minglong 1 Yin, Baoshu 1 Yu, Xianyu 1 Zhang, Lan 1 Zhao, Yu 1 Zhuang, Weiqing 1 Zhuo, Zepeng all top 5 Serials 4 Computer Methods in Applied Mechanics and Engineering 3 Journal of Computational Physics 3 Structural and Multidisciplinary Optimization 2 International Journal for Numerical Methods in Fluids 2 Journal of Xiamen University. Natural Science 2 Applied Mathematical Modelling 2 Engineering Analysis with Boundary Elements 2 Journal of Luoyang University 2 Journal of Nonparametric Statistics 2 Chinese Journal of Computational Mechanics 2 Engineering Optimization 1 Computers & Mathematics with Applications 1 IEEE Transactions on Information Theory 1 Journal of the Franklin Institute 1 Mathematics in Practice and Theory 1 International Journal of Production Research 1 Computational Statistics and Data Analysis 1 Mathematical Problems in Engineering 1 Mathematics and Mechanics of Solids 1 Mechanism and Machine Theory 1 European Journal of Mechanics. A. Solids 1 IEEE Transactions on Image Processing 1 Acta Mechanica Sinica 1 Journal of Mathematical Cryptology 1 Computational & Mathematical Methods in Medicine 1 Communications in Computational Physics 1 Communications in Theoretical Physics 1 IET Control Theory & Applications 1 Advances in Mathematical Physics 1 Science China. Information Sciences 1 International Journal of Systems Science. Principles and Applications of Systems and Integration all top 5 Fields 15 Mechanics of deformable solids (74-XX) 12 Fluid mechanics (76-XX) 8 Numerical analysis (65-XX) 6 Statistics (62-XX) 4 Operations research, mathematical programming (90-XX) 4 Information and communication theory, circuits (94-XX) 3 Systems theory; control (93-XX) 2 Group theory and generalizations (20-XX) 2 Calculus of variations and optimal control; optimization (49-XX) 2 Computer science (68-XX) 2 Mechanics of particles and systems (70-XX) 2 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 1 Partial differential equations (35-XX) 1 Dynamical systems and ergodic theory (37-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Classical thermodynamics, heat transfer (80-XX) 1 Quantum theory (81-XX) 1 Relativity and gravitational theory (83-XX) 1 Biology and other natural sciences (92-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 30 Publications have been cited 219 times in 172 Documents Cited by ▼ Year ▼ Topology optimization of unsteady incompressible Navier-Stokes flows. Zbl 1408.76132 Deng, Yongbo; Liu, Zhenyu; Zhang, Ping; Liu, Yongshun; Wu, Yihui 39 2011 A triangle test for equality of distribution functions in high dimensions. Zbl 1228.62055 Liu, Zhenyu; Modarres, Reza 17 2011 Structure topology optimization: fully coupled level set method via FEMLAB. Zbl 1243.74155 Liu, Zhenyu; Korvink, Jan G.; Huang, Ruo-yua 17 2005 Topology optimization of steady Navier-Stokes flow with body force. Zbl 1297.76048 Deng, Yongbo; Liu, Zhenyu; Wu, Junfeng; Wu, Yihui 16 2013 Lens data depth and median. Zbl 1230.62075 Liu, Zhenyu; Modarres, Reza 15 2011 Discrete adjoint sensitivity analysis for fluid flow topology optimization based on the generalized lattice Boltzmann method. Zbl 1367.76044 Liu, Geng; Geier, Martin; Liu, Zhenyu; Krafczyk, Manfred; Chen, Tao 15 2014 LDPC codes from generalized polygons. Zbl 1318.94112 Liu, Zhenyu; Pados, Dimitrios A. 12 2005 Topology optimization of steady and unsteady incompressible Navier-Stokes flows driven by body forces. Zbl 1274.76188 Deng, Yongbo; Liu, Zhenyu; Wu, Yihui 12 2013 A novel boundary element approach for solving the anisotropic potential problems. Zbl 1259.80024 Zhang, Y. M.; Liu, Z. Y.; Chen, J. T.; Gu, Y. 12 2011 Fermions tunnelling with quantum gravity correction. Zbl 1308.83110 Liu, Zhen-Yu; Ren, Ji-Rong 9 2014 Combination of topology optimization and optimal control method. Zbl 1349.74296 Deng, Yongbo; Liu, Zhenyu; Liu, Yongshun; Wu, Yihui 8 2014 Optimization of unsteady incompressible Navier-Stokes flows using variational level set method. Zbl 1430.76111 Deng, Yongbo; Zhang, Ping; Liu, Yongshun; Wu, Yihui; Liu, Zhenyu 7 2013 Reliability modeling for systems with multiple degradation processes using inverse Gaussian process and copulas. Zbl 1407.62375 Liu, Zhenyu; Ma, Xiaobing; Yang, Jun; Zhao, Yu 6 2014 Topology optimization of capillary, two-phase flow problems. Zbl 1488.76041 Deng, Yongbo; Liu, Zhenyu; Wu, Yihui 6 2017 Static bending and free vibration of organic solar cell resting on Winkler-Pasternak elastic foundation through the modified strain gradient theory. Zbl 1477.74066 Li, Qingya; Wu, Di; Gao, Wei; Tin-Loi, Francis; Liu, Zhenyu; Cheng, Jin 5 2019 Topology optimization of fluid channels with flow rate equality constraints. Zbl 1274.76200 Liu, Zhenyu; Gao, Qingyong; Zhang, Ping; Xuan, Ming; Wu, Yihui 5 2011 Topology optimization on two-dimensional manifolds. Zbl 1442.74167 Deng, Yongbo; Liu, Zhenyu; Korvink, Jan G. 5 2020 Topology optimization theory for laminar flow. Applications in inverse design of microfluidics. Zbl 1386.76004 Deng, Yongbo; Wu, Yihui; Liu, Zhenyu 3 2018 Detachment avoidance of joint elements of a robotic manipulator with clearances based on trajectory planning. Zbl 1359.70008 Bu, Wanghui; Liu, Zhenyu; Tan, Jianrong; Gao, Shuming 3 2010 Robust topology optimization of continuum structures with loading uncertainty using a perturbation method. Zbl 1523.74140 Peng, Xiang; Li, Jiquan; Jiang, Shaofei; Liu, Zhenyu 3 2018 Inversely designed micro-textures for robust Cassie-Baxter mode of super-hydrophobicity. Zbl 1440.74253 Deng, Yongbo; Mager, Dario; Bai, Yue; Zhou, Teng; Liu, Zhenyu; Wen, Liping; Wu, Yihui; Korvink, Jan G. 3 2018 Nonlinear bi-integrable couplings of multicomponent Guo hierarchy with self-consistent sources. Zbl 1266.37035 Yang, Hongwei; Dong, Huanhe; Yin, Baoshu; Liu, Zhenyu 3 2012 A multivariate control quantile test using data depth. Zbl 1365.62128 Liu, Zhenyu; Modarres, Reza; Yang, Mengta 2 2013 Topology optimization for surface flows. Zbl 07568533 Deng, Yongbo; Zhang, Weihong; Liu, Zhenyu; Zhu, Jihong; Korvink, Jan G. 2 2022 A new stochastic isogeometric analysis method based on reduced basis vectors for engineering structures with random field uncertainties. Zbl 1481.74710 Liu, Zhenyu; Yang, Minglong; Cheng, Jin; Tan, Jianrong 2 2021 Automatic coupling of ABAQUS and a boundary element code for dynamic elastoplastic problems. Zbl 1403.74019 Liu, Z. Y.; Dong, C. Y. 1 2016 Folding deformation modeling and simulation of 4D printed bilayer structures considering the thickness ratio. Zbl 1446.74172 Liu, Zhenyu; Liu, Han; Duan, Guifang; Tan, Jianrong 1 2020 Polymorphic uncertainty quantification for engineering structures via a hyperplane modelling technique. Zbl 1507.74279 Wang, Qihan; Feng, Yuan; Wu, Di; Li, Guoyin; Liu, Zhenyu; Gao, Wei 1 2022 Micro-textures inversely designed with overlayed-lithography manufacturability for wetting behavior in Cassie-Baxter status. Zbl 1481.74590 Deng, Yongbo; Liu, Zhenyu; Wang, Yasi; Duan, Huigao; Korvink, Jan G. 1 2019 Reliability optimization design for composite laminated plate considering multiple types of uncertain parameters. Zbl 1523.74097 Peng, Xiang; Guo, Yuliang; Qiu, Chan; Wu, Huaping; Li, Jiquan; Chen, Guohai; Jiang, Shaofei; Liu, Zhenyu 1 2021 Topology optimization for surface flows. Zbl 07568533 Deng, Yongbo; Zhang, Weihong; Liu, Zhenyu; Zhu, Jihong; Korvink, Jan G. 2 2022 Polymorphic uncertainty quantification for engineering structures via a hyperplane modelling technique. Zbl 1507.74279 Wang, Qihan; Feng, Yuan; Wu, Di; Li, Guoyin; Liu, Zhenyu; Gao, Wei 1 2022 A new stochastic isogeometric analysis method based on reduced basis vectors for engineering structures with random field uncertainties. Zbl 1481.74710 Liu, Zhenyu; Yang, Minglong; Cheng, Jin; Tan, Jianrong 2 2021 Reliability optimization design for composite laminated plate considering multiple types of uncertain parameters. Zbl 1523.74097 Peng, Xiang; Guo, Yuliang; Qiu, Chan; Wu, Huaping; Li, Jiquan; Chen, Guohai; Jiang, Shaofei; Liu, Zhenyu 1 2021 Topology optimization on two-dimensional manifolds. Zbl 1442.74167 Deng, Yongbo; Liu, Zhenyu; Korvink, Jan G. 5 2020 Folding deformation modeling and simulation of 4D printed bilayer structures considering the thickness ratio. Zbl 1446.74172 Liu, Zhenyu; Liu, Han; Duan, Guifang; Tan, Jianrong 1 2020 Static bending and free vibration of organic solar cell resting on Winkler-Pasternak elastic foundation through the modified strain gradient theory. Zbl 1477.74066 Li, Qingya; Wu, Di; Gao, Wei; Tin-Loi, Francis; Liu, Zhenyu; Cheng, Jin 5 2019 Micro-textures inversely designed with overlayed-lithography manufacturability for wetting behavior in Cassie-Baxter status. Zbl 1481.74590 Deng, Yongbo; Liu, Zhenyu; Wang, Yasi; Duan, Huigao; Korvink, Jan G. 1 2019 Topology optimization theory for laminar flow. Applications in inverse design of microfluidics. Zbl 1386.76004 Deng, Yongbo; Wu, Yihui; Liu, Zhenyu 3 2018 Robust topology optimization of continuum structures with loading uncertainty using a perturbation method. Zbl 1523.74140 Peng, Xiang; Li, Jiquan; Jiang, Shaofei; Liu, Zhenyu 3 2018 Inversely designed micro-textures for robust Cassie-Baxter mode of super-hydrophobicity. Zbl 1440.74253 Deng, Yongbo; Mager, Dario; Bai, Yue; Zhou, Teng; Liu, Zhenyu; Wen, Liping; Wu, Yihui; Korvink, Jan G. 3 2018 Topology optimization of capillary, two-phase flow problems. Zbl 1488.76041 Deng, Yongbo; Liu, Zhenyu; Wu, Yihui 6 2017 Automatic coupling of ABAQUS and a boundary element code for dynamic elastoplastic problems. Zbl 1403.74019 Liu, Z. Y.; Dong, C. Y. 1 2016 Discrete adjoint sensitivity analysis for fluid flow topology optimization based on the generalized lattice Boltzmann method. Zbl 1367.76044 Liu, Geng; Geier, Martin; Liu, Zhenyu; Krafczyk, Manfred; Chen, Tao 15 2014 Fermions tunnelling with quantum gravity correction. Zbl 1308.83110 Liu, Zhen-Yu; Ren, Ji-Rong 9 2014 Combination of topology optimization and optimal control method. Zbl 1349.74296 Deng, Yongbo; Liu, Zhenyu; Liu, Yongshun; Wu, Yihui 8 2014 Reliability modeling for systems with multiple degradation processes using inverse Gaussian process and copulas. Zbl 1407.62375 Liu, Zhenyu; Ma, Xiaobing; Yang, Jun; Zhao, Yu 6 2014 Topology optimization of steady Navier-Stokes flow with body force. Zbl 1297.76048 Deng, Yongbo; Liu, Zhenyu; Wu, Junfeng; Wu, Yihui 16 2013 Topology optimization of steady and unsteady incompressible Navier-Stokes flows driven by body forces. Zbl 1274.76188 Deng, Yongbo; Liu, Zhenyu; Wu, Yihui 12 2013 Optimization of unsteady incompressible Navier-Stokes flows using variational level set method. Zbl 1430.76111 Deng, Yongbo; Zhang, Ping; Liu, Yongshun; Wu, Yihui; Liu, Zhenyu 7 2013 A multivariate control quantile test using data depth. Zbl 1365.62128 Liu, Zhenyu; Modarres, Reza; Yang, Mengta 2 2013 Nonlinear bi-integrable couplings of multicomponent Guo hierarchy with self-consistent sources. Zbl 1266.37035 Yang, Hongwei; Dong, Huanhe; Yin, Baoshu; Liu, Zhenyu 3 2012 Topology optimization of unsteady incompressible Navier-Stokes flows. Zbl 1408.76132 Deng, Yongbo; Liu, Zhenyu; Zhang, Ping; Liu, Yongshun; Wu, Yihui 39 2011 A triangle test for equality of distribution functions in high dimensions. Zbl 1228.62055 Liu, Zhenyu; Modarres, Reza 17 2011 Lens data depth and median. Zbl 1230.62075 Liu, Zhenyu; Modarres, Reza 15 2011 A novel boundary element approach for solving the anisotropic potential problems. Zbl 1259.80024 Zhang, Y. M.; Liu, Z. Y.; Chen, J. T.; Gu, Y. 12 2011 Topology optimization of fluid channels with flow rate equality constraints. Zbl 1274.76200 Liu, Zhenyu; Gao, Qingyong; Zhang, Ping; Xuan, Ming; Wu, Yihui 5 2011 Detachment avoidance of joint elements of a robotic manipulator with clearances based on trajectory planning. Zbl 1359.70008 Bu, Wanghui; Liu, Zhenyu; Tan, Jianrong; Gao, Shuming 3 2010 Structure topology optimization: fully coupled level set method via FEMLAB. Zbl 1243.74155 Liu, Zhenyu; Korvink, Jan G.; Huang, Ruo-yua 17 2005 LDPC codes from generalized polygons. Zbl 1318.94112 Liu, Zhenyu; Pados, Dimitrios A. 12 2005 all cited Publications top 5 cited Publications all top 5 Cited by 369 Authors 13 Modarres, Reza 9 Liu, Zhenyu 8 Deng, Yongbo 8 Yamada, Takayuki 7 Izui, Kazuhiro 7 Nishiwaki, Shinji 6 Yaji, Kentaro 5 Korvink, Jan G. 5 Silva, Emílio Carlos Nelli 5 Storme, Leo 4 Duan, Xianbao 4 Gecim, Ganim 4 Ghosh, Anil Kumar 4 Guo, Lingzhe 4 Matsumoto, Toshiro 4 Papadopoulos, Ioannis P. A. 4 Sucu, Yusuf 4 Wu, Yihui 4 Yang, Mengta 4 Yoshino, Masato 3 Fraiman, Ricardo 3 Kim, Junseok 3 Klemens, Fabian 3 Krause, Mathias J. 3 Li, Feifei 3 Li, Yibao 3 Moreno, Leonardo 3 Qin, Xinqiang 3 Rumpf, Martin 3 Sá, Luís F. N. 3 Sigmund, Ole 3 Thäter, Gudrun 3 Vandendriessche, Peter 3 Yin, Baoshu 2 Biswas, Munmun 2 Cholaquidis, Alejandro 2 Dong, Huanhe 2 Du, Zongliang 2 Farrell, Patrick E. 2 Francisci, Giacomo 2 Gamboa, Fabrice 2 Giannakoglou, Kyriakos C. 2 Guo, Xu 2 Guthausen, Gisela 2 Huo, Wendong 2 Isakari, Hiroshi 2 Jeong, Darae 2 Kiyono, Cesar Yukishigue 2 Łaniewski-Wołłk, Łukasz 2 Lazarov, Boyan Stefanov 2 Lee, Chaeyoung 2 Li, Yuqing 2 Liu, Chang 2 Liu, Zhi 2 Mu, Benrong 2 Nieto-Reyes, Alicia 2 Okubo, Carlos M. jun. 2 Pepe, Valentina 2 Schuhmann, Sebastian 2 Simon, Stefan 2 Song, Yu 2 Szumbarski, Jacek 2 Takahashi, Toru 2 Van de Voorde, Geertrui 2 Wang, Peng 2 Yang, Haitang 2 Yang, Junxiang 2 Zhang, Weihong 2 Zhu, Jihong 1 Abbaszadeh, Mostafa 1 Abdelwahed, Mohamed 1 Aginaga, Jokin 1 Agostinelli, Claudio 1 Ahmed, Jamil 1 Altuzarra, Oscar 1 Antunes, C. Henggeler 1 Bai, Yue 1 Balakrishnan, Narayanaswamy 1 Balakrishnan, Sivaraman 1 Balbierer, Roland 1 Bariffi, Jessica 1 Bastide, Alain 1 Behrou, Reza 1 Berggren, Martin 1 Biswas, Rahul 1 Bo, Luo 1 Bodony, Daniel J. 1 Chen, Huangxin 1 Chen, Li 1 Chen, Nan 1 Chen, Tao 1 Chen, Xudan 1 Chengwei, Zhang 1 Chorfi, Nejmeddine 1 Clausen, Peter M. 1 Cocquet, Pierre-Henri 1 Conti, Sergio 1 Daniali, Hamidreza Mohammadi 1 Dardel, Morteza 1 De, Shyamal Krishna ...and 269 more Authors all top 5 Cited in 73 Serials 30 Computer Methods in Applied Mechanics and Engineering 13 Journal of Computational Physics 10 Computers & Mathematics with Applications 6 Computers and Fluids 5 Applied Mathematical Modelling 5 Advances in High Energy Physics 4 Journal of Multivariate Analysis 4 Designs, Codes and Cryptography 4 Computational Statistics and Data Analysis 4 Journal of Applied Statistics 4 Structural and Multidisciplinary Optimization 3 International Journal for Numerical Methods in Engineering 3 Mathematical Problems in Engineering 3 Communications in Computational Physics 2 General Relativity and Gravitation 2 International Statistical Review 2 Journal of Computational and Applied Mathematics 2 Statistics 2 Computational Mechanics 2 Communications in Statistics. Simulation and Computation 2 Communications in Statistics. Theory and Methods 2 SIAM Journal on Scientific Computing 2 Statistical Papers 2 European Journal of Mechanics. A. Solids 2 Statistical Methods and Applications 1 Acta Mechanica 1 The Canadian Journal of Statistics 1 Discrete Mathematics 1 Journal of Engineering Mathematics 1 Mathematical Methods in the Applied Sciences 1 Nuclear Physics. B 1 Physics Letters. B 1 The Annals of Statistics 1 Applied Mathematics and Computation 1 Journal of Pure and Applied Algebra 1 SIAM Journal on Numerical Analysis 1 Statistics & Probability Letters 1 Statistical Science 1 Applied Mathematics Letters 1 Journal of Scientific Computing 1 Machine Learning 1 Japan Journal of Industrial and Applied Mathematics 1 International Journal of Computational Geometry & Applications 1 Computational Statistics 1 European Journal of Operational Research 1 Journal of Statistical Computation and Simulation 1 Linear Algebra and its Applications 1 Advances in Engineering Software 1 Test 1 Finite Fields and their Applications 1 Journal of Combinatorial Designs 1 Engineering Analysis with Boundary Elements 1 European Series in Applied and Industrial Mathematics (ESAIM): Control, Optimization and Calculus of Variations 1 Multibody System Dynamics 1 Nonlinear Dynamics 1 Abstract and Applied Analysis 1 Mechanism and Machine Theory 1 Communications in Nonlinear Science and Numerical Simulation 1 Optimization and Engineering 1 Archives of Computational Methods in Engineering 1 Journal of Applied Mathematics 1 OR Spectrum 1 Multiscale Modeling & Simulation 1 Boundary Value Problems 1 Engineering Optimization 1 Inverse Problems in Science and Engineering 1 Optimization Letters 1 Advances in Mathematics of Communications 1 Electronic Journal of Statistics 1 Analysis and Mathematical Physics 1 Statistics and Computing 1 AMM. Applied Mathematics and Mechanics. (English Edition) 1 Proceedings of the Royal Society of London. A. Mathematical, Physical and Engineering Sciences all top 5 Cited in 28 Fields 65 Mechanics of deformable solids (74-XX) 55 Fluid mechanics (76-XX) 39 Statistics (62-XX) 32 Numerical analysis (65-XX) 23 Calculus of variations and optimal control; optimization (49-XX) 11 Partial differential equations (35-XX) 10 Information and communication theory, circuits (94-XX) 9 Geometry (51-XX) 9 Operations research, mathematical programming (90-XX) 8 Relativity and gravitational theory (83-XX) 7 Combinatorics (05-XX) 7 Probability theory and stochastic processes (60-XX) 7 Quantum theory (81-XX) 5 Mechanics of particles and systems (70-XX) 4 Classical thermodynamics, heat transfer (80-XX) 3 Number theory (11-XX) 3 Dynamical systems and ergodic theory (37-XX) 2 Biology and other natural sciences (92-XX) 1 Linear and multilinear algebra; matrix theory (15-XX) 1 Nonassociative rings and algebras (17-XX) 1 Difference and functional equations (39-XX) 1 Functional analysis (46-XX) 1 Computer science (68-XX) 1 Optics, electromagnetic theory (78-XX) 1 Statistical mechanics, structure of matter (82-XX) 1 Astronomy and astrophysics (85-XX) 1 Geophysics (86-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year