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A key challenge of future mobile communications research is to strike an attractive compromise between wireless network's area spectral-efficiency and energy-efficiency. This necessitates a clean-slate approach to wireless system design, embracing the rich body of existing knowledge especially on Multiple-Input-Multiple-Output (MIMO) technologies. This(More)
—Infrastructure-as-a-Service (IaaS) cloud computing offers customers (tenants) a scalable and economical way to provision virtual machines (VMs) on demand while charging them only for the leased computing resources by time. However, due to the VM contention on shared computing resources in datacenters, this new computing paradigm inevitably brings(More)
We evaluated a virtual reality shoulder arthroscopy simulator using a standardized skills-assessment algorithm in 3 specific groups with various degrees of surgical expertise. The simulator (Mentice Corp, Gothenberg, Sweden) consists of a computer-based, dual-force feedback system with video monitor. Modeled structures include cartilage, labrum, ligaments,(More)
Topology control techniques for wireless sensor networks are systematically classified into two categories, namely, network coverage and network connectivity. The relevant basic principles, state of the art, and future research directions are summarized in this paper. ABSTRACT | The wireless sensor network (WSN) technology spawns a surge of unforeseen(More)