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Extensive security is required for wireless networking in health care due to regulations for patient privacy and the necessary availability of protected health information for prescribed entities. IEEE 802.11-2007 and IEEE 802.15.4-2006 are compared with respect to their security provisions in the patient monitoring environment. This study demonstrates that IEEE 802.11-2007 has a slight edge over...
This paper presents a comparison between the basic channel access mechanisms in IEEE 802.11-2007 and IEEE 802.15.4-2006. Based on a data exchange scenario with unacknowledged data, typical for applications with multi-hop transmissions, the maximum and minimum delays in both standards were calculated.
In this paper, the application of individual scenario-based traffic models in identifying the traffic carrying needs of networks in patient monitoring environments is presented. Since the total number of traffic sources is small for a central limit theorem-like approximation, a simple traffic matrix for each scenario can be used to identify the capacity needed for carrying data. The data traffic is...
Measurements of sublingual blood velocity and blood flow were performed at normal body temperature and after both hot and cold stimulation. Laser speckle measurements of blood velocity were compared with measurements of blood flow obtained with a commercial laser Doppler flowmeter. Sublingual blood velocity increased in all subjects in response to both hot and cold stimulation as compared with that...
The IrDA wireless protocol has been applied to a fiber optics based point-of-care system for the detection of intravenous infiltration. The system is used for monitoring patients under infusion therapy. It is optimized for portability by incorporating a battery source and wireless communication. The IrDA protocol provides secure data communication between the electronic module of the system and the...
Retinal blood velocity measurements using laser speckle imaging were obtained using a modified fundus camera. The effect of blood oxygen saturation on retinal blood velocity was examined using a rabbit model
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