Optimization of Joint Replacement Policies for Multipart Systems by a Rollout Framework (2009)
Tao Sun, Student Member, Qianchuan Zhao, Peter B. Luh, Robert N. Tomastik, Senior Member
Abstract—Maintaining an asset with life-limited parts, e.g., a jet engine or an electric generator, may be costly. Certain costs, e.g., setup cost, can be shared if some parts of the asset are...
INSEPARABILITY OF MIN-MAX SYSTEMS * (2008)
Abstract. Min-max systems, or min-max-plus systems are algebraic models of Discrete Event Dynamic Systems. They are non-linear extension of the well known linear max-plus system models. In this...
Opportunistic Spectrum Access via Periodic Channel Sensing (2008)
Qianchuan Zhao, Stefan Geirhofer, Student Member, Lang Tong, Brian M. Sadler
Abstract — The problem of opportunistic access of parallel channels occupied by primary users is considered. Under a continuous-time Markov chain modeling of the channel occupancy by the primary...
Opportunistic Spectrum Access via Periodic Channel Sensing (2008)
Qianchuan Zhao, Stefan Geirhofer, Student Member, Lang Tong, Brian M. Sadler
Abstract—The problem of opportunistic access of parallel channels occupied by primary users is considered. Under a continuoustime Markov chain modeling of the channel occupancy by the primary...
On Stabilization of Min-Max Systems (2007)
Qianchuan Zhao, Da-zhong Zheng
This note studies min-max systems which are dynamic systems involving three operations (min,max,+). We present a feedback stabilization policy such that the closed-loop systems have a global cycle...
Qianchuan Zhao, Da-zhong Zheng, Xinping Zhu
This paper studies min-max systems which are dynamic systems including three operations (min,max,+) with unknown or stochastic parameters. Some sucient conditions will be given for the existence of...
Optimal Dynamic Spectrum Access via Periodic Channel Sensing (2007)
Qianchuan Zhao, Stefan Geirhofer, Lang Tong, Brian M. Sadler
Abstract — The problem of dynamically accessing a set of parallel channels occupied by primary users is considered. The secondary user is allowed to sense and to transmit in a single channel. By...