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Spectrum sensing is important for dynamic spectrum allocation in cognitive radio networks (CRNs). Spectrum sensing algorithms are used to determine the frequency of spectrum sensing and the order for the channels to be scanned. In this paper, we propose a two-phase and two-period spectrum sensing (TTSS) scheme using high-layer information for CRNs. Benefiting from advanced physical-layer technologies,...
Various types of tin oxide particle, including square SnO platelets, truncated octahedral SnO crystals, and monodispepersed SnO 2 nanoparticles, were synthesized by the dissolution and recrystallization of bulk SnO powder via the thermal decomposition of tin oleate in a coordinating solvent of tri-n-octylamine at 340°C. The results reveal that the atmosphere and reaction time are important...
Falls are one of the most common adverse events in hospitals and fall management remains a major challenge in the medical care quality. Falls in patients are associated with major health complications that can result in health decline and increased medical care cost. To deliver medical care in time, reliable location-aware fall detection is needed. In this paper, we propose a patient alert alarm for...
In this study, a novel packaging structure for open-channel sensor was successfully demonstrated by using the sacrifice-replacement method. This method was patterned JSR THB-151N photoresist to fabricate an open space to contact medium. The sacrificial-barriers of 75 and 150 mum thickness have been fabricated with good reproducibility by using single and double coating processes. Optimized fabrication...
A novel plastic packaging structure for open-channel sensor was demonstrated using wafer-barrier-forming process in this paper. Stacking SU-8 100 and SU-8 50 photoresists were patterned to form a square and annular barrier to release an open sensing space within the sensor packaging. The annular barrier of 150 mum thickness has been lithographed with good reproducibility using double coating processes...
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