Optimal feedback control (OFC) is a theory from the motor literature that explains how humans move their body to achieve certain goal, e.g., pointing with finger. OFC based on assumption aim optimally, within constraints imposed by body, environment, and task. In this paper, we explain can be applied understanding Human-Computer Interaction (HCI) in case of pointing. We propose human computer d...

Typically, a computer has infectivity as soon it is infected. It reality that no antivirus programming can identify and eliminate all kinds of viruses, suggesting infections would persevere on the Internet. To understand dynamics virus propagation in better way, spread model with fuzzy parameters presented this work. assumed infected computers do not have same contribution to transmission proce...