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In this paper, we propose a non-invasive tracking method, which has the potential to be used for localization of the capsule endoscope. The tracking system consists of a magnetic marker, a sensor array, amplifiers, data acquisition devices and a signal processing unit. The marker is modeled as a magnetic dipole to simplify the theoretical expression of the(More)
A wireless body area network system can be implemented to gather the physiological signals of the objective persons. In the network, some sensor nodes are used to monitor and determine the health status of people, and their signals are transmitted via wireless RF network. In order to maintain good performance of the network, an appropriate communication(More)
To build a new wireless robotic capsule endoscope with external guidance for controllable and interactive GI tract examination, a sensing system is needed for tracking 3D location and 2D orientation of the capsule movement. An appropriate sensing approach is to enclose a small permanent magnet in the capsule. The magnet establishes a magnetic field around(More)
It is well established that individuals show an other-race effect (ORE) in face recognition: they recognize own-race faces better than other-race faces. The present study tested the hypothesis that individuals would also scan own- and other-race faces differently. We asked Chinese participants to remember Chinese and Caucasian faces and we tested their(More)
A magnetic localization and orientation system is proposed for tracking wireless capsule endoscope. This system uses a small magnet enclosed in the capsule to serve as excitation source. When the capsule moves, the magnet establishes a static magnetic field around. With the magnetic sensor array composed of Honeywell 3-axis magnetic sensors, HMC1053, the(More)
This paper introduces a centralized approach to data gathering and communication for wireless sensor networks. Inspired by the social behaviors of ants, we clearly partition the work for the base station and sensor nodes according to their different functions and capabilities. A near-optimal chain is achieved by using an ant colony optimization method ruing(More)
Changes in the expression profiles of microRNAs (miRNAs) have been found in many cancers. The study was aimed to investigate the expression of miR-25, miR-223, and miR-375 in the serum of patients with esophageal squamous cell carcinoma (ESCC) and its effect on survival outcome. We examined the expression levels of miR-25, miR-223, and miR-375 in 20 pairs(More)
To build a new type of wireless capsule endoscope with interactive gastrointestinal tract examination, a localization and orientation system is needed for tracking 3D location and 3D orientation of the capsule movement. The magnetic localization and orientation method produces only 5 DOF, but misses the information of rotation angle along capsule's main(More)
To track the movement of a wireless capsule, a magnetic localization and orientation system is designed. In this system, a permanent magnet is enclosed in the capsule, which generates a magnetic field around. With the magnetic sensor array arranged out of the human body, we can measure the magnet's magnetic signals, and compute the capsule's 3D localization(More)