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This paper explores the design of a collimating lens based on freeform method. With this freeform structure, the light can be propagated as nearly parallel light which allow the light be transmitted to a large distance without substantial loss.
This letter presents a novel non-line-of-sight (NLOS) localization scheme based on the concept of virtual reference device. The position of virtual reference device for each NLOS path can be determined if the initial mobile device position can be estimated or when the mobile device transits from LOS to NLOS region. With the position of virtual reference devices, the subsequent localization of mobile...
This study aims to probe the effects of teachers' and peers' communication style and quality on adolescents' cognitive and emotional learning by questionnaires and regression analysis. The relations between impact of emotional learning and academic learning are examined; and the intermediate variable of learning performance is found out to be learning motivation. Results show that students' perception...
The safety of power supply for biomedical implants is critical in an implantable system. In this paper, an adaptive feedback with pulse width modulation (PWM) and load shift keying (LSK) is introduced and used in the design of a wireless power transmission system. Experimental results show that the system can receive stable power when the distance between the transmitter and receiver changes. Compared...
We present modulators developed in the projects “HELIOS”, and “UK Silicon Photonics”, integration with modulator driver to produce the first silicon modulator fully integrated with BiCMOS, and multiplexed photonic crystal modulators for ultra-low power operation.
Magnetic resonance imaging (MRI) is a widely used method to obtain high quality medical image of the brain. Post-processing MR images with segmentation algorithms enhances the visualization and measurement of soft tissues and lesions. However, the conventional algorithms are not perfect and there are still some regions which are not partitioned accurately. In this paper, a new ant colony algorithm...
In our previous work, we have developed an interactive system of artificial fish school for Visual Marine Museum in Hisashi Kawabayashi and Yen-Wei Chen (2009), Kanami Kobayashi (2005), Craig W. Reynolds (1987). In this paper, we focus our researches on its fast implementation and remote control. We propose to use parallel processing techniques and space blocking method for fast implementation. The...
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