This book provides insights of World Conference on Smart Trends in Systems, Security and Sustainability (WS4 2021) which is divided into different sections such as Smart IT Infrastructure for Sustainable Society; Smart Management prospective for Sustainable Society; Smart Trends for Computational Graphics and Image Modeling;

Atulya K. Nagar holds Foundation Chair as a professor of Mathematical Sciences and is pro-vice-chancellor for Research and Dean of the Faculty of Science at Liverpool Hope University, UK. He is also the head of the School of Mathematics, Computer Science, and Engineering, which he established at the University. He is an internationally respected scholar working at the cutting edge of theoretical computer science, applied mathematical analysis, operations research, and systems engineering. He received a prestigious Commonwealth Fellowship to pursue his doctorate (D.Phil.) in Applied Nonlinear Mathematics, which he earned from the University of York (UK) in 1996. He holds a B.Sc. (Hons.), an M.Sc., and M.Phil. (with distinction) in Mathematical Physics from the MDS University of Ajmer, India. His research expertise spans both applied mathematics and computational methods for nonlinear, complex, and intractable problems arising in science, engineering, and industry.  

GABRIELA MARÍN-RAVENTÓS received a M.Sc. in Computer Science from Case Western Reserve University in 1985 and a Ph.D. in Business Analysis and Research from Texas A&M University, USA, in 1993. She has been a Computer Science faculty member at Universidad de Costa Rica (UCR) since 1980. She was the dean of Graduate Studies and the director of the Research Center for Communication and Information Technologies (CITIC), both at UCR. Currently, she is a director of the Graduate Program in Computer Science and Informatics. She has organized several international and national conferences, and has been, and actually is, a chair of several program and editorial committees. From 2012 to 2016, she was the president of the Latin American Center for Computer Studies (CLEI), becoming the first woman to occupy such a distinguished position. Since September 2016, she has been vice-president of the International Federation for Information Processing (IFIP), in charge of the Digital Equity Committee. Her research interests include smart cities, human–computer interaction, decision support systems, gender in IT and digital equity.  

Durgesh Kumar Mishra has received M.Tech. degree in Computer Science from DAVV, Indore, in 1994 and Ph.D. degree in Computer Engineering in 2008. Presently, he has been working as a director and professor (CSE) at Sri Aurobindo Institute of Technology, Indore, MP, India. He is also a visiting faculty at IIT-Indore, MP, India. He has 24 years of teaching and 10 years of research experience. He has completed his Ph.D. on the area - Secure Multi-Party Computation for Preserving Privacy. He has published more than 90 papers in refereed international/national journals and conferences including IEEE, ACM conferences. His publications are listed in DBLP, Citeseer-x, Elsevier, and Scopus. He is a senior member of IEEE. He visited MIT Boston and presented his presentation on security and privacy. He also chaired a panel on “Digital Monozukuri” at “Norbert Winner in 21st century” at BOSTON. He became the member of Bureau of Indian standards (BIS), Govt. of India, for Information Security domain. 

Dharm Singh Jat is a professor of Computer Science at Namibia University of Science and Technology (NUST). He has guided about 8 Ph.D. and 24 master research scholars. He is the author of more than 150 peer-reviewed articles and the author or editor of more than 20 books. His interests span the areas of multimedia communications, wireless technologies, mobile communication systems, edge roof computing and, software defined networks, network security, and Internet of things. He has given several guest lecturer/invited talks at various prestigious conferences. He is a fellow of the Institution of Engineers (I), Fellow of Computer Society of India, Chartered Engineer (I), Senior Member IEEE and Distinguished ACM Speaker.  He also developed experiments based on simulation software fornetwork experiments, research, and project work for undergraduate and postgraduate students. His research in developing video communication platforms for solving QoS issues in video communications and also developed a framework for video transmission over wireless networks for undergraduate and postgraduate students.