Payton Pei

Security principles and risk frameworks for protecting users, data, and networks, covering authentication, access control, encryption, public-key infrastructure, and security in wireless, cloud, and IoT environments.

System modelling and the simulation process, including continuous and discrete-event simulation, numerical solution of ordinary differential equations, random variates, validation, quality assurance, and simulation languages.

User-requirements analysis, model design, data mining, optimization software, and systems thinking applied to the modelling, simulation, optimization, and management of economic and hierarchical systems.

Systems thinking for economic and complex systems, covering hierarchical systems, simulation and behaviour, soft systems thinking, and interdisciplinary applications.

Architectures and applications for wireless and mobile commerce, including electronic banking, digital cash, wireless exchanges, business models, mobile networks and routing, content presentation, security, standards, protocols, and case studies.

Human affect models, AI-based affect estimation, multimodal fusion, persuasive technologies, persuasion design, serious games, and open challenges in affective and persuasive computing.

Planning and design of complex systems across continuous and discrete time, with systems-methodology synthesis, state estimation, parameter identification, discretization, stochastic effects, dynamic and logic control, and discrete-event simulation.

Machine-learning capabilities and limitations, problem formulation, supervised and unsupervised techniques, model deployment, monitoring and evaluation, communicating results, and current applications across business, law, arts, social sciences, and education.