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OLED power management on mobile devices is very challenging due to the dynamic nature of human-screen interaction. This paper presents the design, algorithms, and implementation of a lightweight mobile app called ShiftMask, which allows the user to dynamically shift OLED power to the portion of interest, while dimming the remainder of the screen based on visual acuity. To adapt to the user's focus...
This paper presents a finger-powered microfluidic electrochemical assay for rapid measurements of protein biomarkers. This device employs a valveless, piston-based pumping mechanism which utilizes a human finger for the actuation force. Liquids are driven inside microchannels by pressing on pistons which generate pressure-driven flows. Reagents are preloaded in microwells allowing for the entire testing...
Although the flow-mediated dilation (FMD) index is considered the most reliable indicator of vascular endothelial function, previous studies have proved that the dilatation index (DI) measured by the highly reproducible air pressure sensing system (APSS) is just as accurate in effectively determining endothelial function. Besides, not only is APSS cheaper than the instrument for FMD ratio measurement,...
Mobile payment protocols have become more and more popular with the rapid development of network and mobile phones technologies. It gradually changes the consuming behaviors of consumers. However, must of the existing mobile payment protocols can only support on-line transactions. Some provides off-line transactions but have the limitation of micro-payments only. A micro-payment allows only a very...
In process of 3D image reconstruction, the local image breakage or mismatch are appeared when the objects have high reflection and uniform color properties, such as, windshield of car, reflective paint, etc. In this study, the above-mentioned conditions are overcame by introducing the different statement of software processing to examine the 3D model reconstruction of car. Four types processes, extract...
We consider the decision engine of mobile cloud offloading systems, which decides whether to offload a given method to the cloud servers. We design, implement, and evaluate a context-aware decision algorithm, called CADA, to optimize the performance of the mobile devices with various optimization criteria, including short response time and low energy consumption. The CADA algorithm can work with various...
In this research, an active RFID-based personal navigation system for multi-story indoor environments is proposed. Without using complicated three-dimensional positioning algorithms, we employ an existing two-dimensional positioning engine and equip the system with the capability of seamless positioning handoffs between different floors. The handoff process is triggered by monitoring the received...
Authentication with key agreement protocol (AKA) can provide mutual authentication and create a session key between two communication parties. In 2005, Chen and Yeh proposed an AKA protocol based on one-way hash function and exclusive-or (XOR) operations. Having the feature of fast processing, their protocol is more efficient than previously related works. However, we discover that Chen and Yeh¡¦s...
Kerberos is a well-known network authentication mechanism. Based upon Kerberos' model, Sun and Yeh proposed three user authentication and key establishment (UAKE) protocols with perfect forward secrecy (PFS). However, due to the use of public-key cryptosystem to implement UAKE, their protocols are not suitable for mobile devices, which have computational, power and storage constraints. Therefore,...
In this work, we design and implement encapsulated HL7 standard EHR with video conferencing trigger for a physiological monitoring system on mobile device platform. According to the monitored physiological data, the proposed system would automatically enable mobile video conferencing function to promote telemedicine emergent care.
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