Ritai Yu

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—With the scale of computing system increases, system performance and reliability, described by various Quality of Service(QoS) metrics, cannot be guaranteed if only the objective is to minimize the total power consumptions separately, despite of the violations of QoS. In this paper a feedback control based power aware job scheduling algorithm is proposed(More)
Due to various differences in hardware architectures of devices in ubiquitous computing systems, portability and platform-independency become the main challenge for graphics programming in system design. In this paper, we propose an adaptive user interface programming toolkit for system design in ubiquitous computing environment. The toolkit leverages an(More)
Virtualization technology enables server and service consolidation to save more power and operational costs of large scale computing systems. However, the consolidation nature of virtualization intensifies the power densities in a rack, thus resulting in higher probability of failures and Service Level Agreements violations under constrained power budget.(More)
A MOOC (Massive Open Online Course) study shortens the distance between students and educators, and surpasses time and space, but it also creates barriers of true emotion interaction in the study process. This research demonstrated the feasibility of using a pupil diameter variation as the indicator of implicit affection states for the scales of valence and(More)
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