Recently, augmented ultrahigh frequency radio-frequency identification (UHF RFID) systems have been developed, and they contain additional components that can detect a tag's backscattered response and use this information for the localization of the tag and other applications. The methods currently employed either have poor performance because the detection… (More)
In this paper we examine the pressure detection quality and signal clarity for two types of piezoelectric film sensors. One sensor was coated with polydimethylsiloxane (PDMS) while the other remained uncoated. Our goal was to determine how coating the sensor with PDMS would affect sensor performance. Our long-term goal is to develop a tongue-computer… (More)
A treatment for depression, chronic pain, cravings, and more--this is the emerging field of transcranial direct current stimulation (tDCS). In tDCS, transcranial means through the skull, and direct current is a weak stimulation current delivered to the brain using noninvasive electrodes placed on the scalp [Figure 1(a)].
Radio frequency identification (RFID) is a rapidly emerging technology that enables automatic remote identification of objects. Passive and semi-passive RFID systems can be distinguished from other forms of wireless systems, because the RFID tags (transponders) communicate by way of backscatter. In addition, passive tags derive their energy from the RF… (More)
An overview of academic and industry solutions to UHF RFID portals.
There have been many advances in the development and application of human computer interfaces during the past decade. We were motivated by these successful applications of human computer interfaces to design a low cost device which may also provide the user with a faster training time. In this paper we discuss the design and implementation and testing of… (More)
—In this paper, a summary of performance evaluation is presented, including a discussion of different types of evaluations. The following performance metrics are introduced and defined: speedup, efficiency and scalability. The paper includes a literature survey of performance counters used in multiprocessor systems. A classification is established based on… (More)