In order to minimize the self-heating effect of the classic SOI devices, SOI structures with Si3N4 film as a buried insulator (SOSN) are successfully formed using epitaxial layer transfer technology for the first time...
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In order to minimize the self-heating effect of the classic SOI devices, SOI structures with Si3N4 film as a buried insulator (SOSN) are successfully formed using epitaxial layer transfer technology for the first time. The new SOI structures are investigated with high-resolution cross-sectional transmission electron microscopy and spreading resistance profile. Experiment results show that the buried Si3N4 layer is amorphous and the new SOI material has good structural and electrical properties. The output current characteristics and temperature distribution are simulated and compared to those of standard SOI MOSFETs. Furthermore, the channel temperature and negative differential resistance are reduced during high-temperature operation, suggesting that SOSN can effectively mitigate the self-heating penalty. The new SOI device has been verified in two-dimensional device simulation and indicated that the new structures can reduce device self-heating and increase drain current of the SOI MOSFET.
Many tools have been constructed using different formal methods to process various parts of a language specification (e.g. scanner generators, parser generators and compiler generators). The automatic generation of a ...
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A new circuit design is proposed for generating grid-scroll chaos in the phase plane by using a second-order linear system with a control of double-hysteresis series. The double-hysteresis series is constructed in a s...
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A new circuit design is proposed for generating grid-scroll chaos in the phase plane by using a second-order linear system with a control of double-hysteresis series. The double-hysteresis series is constructed in a systematic way by using the basic double-hysteresis building blocks. With the proposed scheme, the number of scrolls can be arbitrarily assigned, and the multi-scroll chaotic attractors can be placed anywhere and can cover any chosen area in the phase plane. The grid-scroll chaotic attractor is applied to biometric (fingerprint image) authentication. In this application, a two-dimensional (2D) discrete chaotic image is created from these grid-scroll chaotic attractors. Some of the parameters of the 2D chaotic image are extracted from the stable global structure of fingerprint image, and used to derive the encryption key at a terminal. Decryption, minutiae extraction and matching are fulfilled at the central server.
This paper describes the robust reading competitions for ICDAR 2003. With the rapid growth in research over the last few years on recognizing text in natural scenes, there is an urgent need to establish some common be...
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High bit rate wireless cellular service using CDMA 1X-EVDO is now popular in Korea, particularly in urban areas, since it was launched commercially in 2002. This cellular service allows the real-time transmission of p...
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Due to the opportunities provided by the Internet, more and more people are taking advantage of distance learning courses and during the last few years enormous research efforts have been dedicated to the development ...
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Due to the opportunities provided by the Internet, more and more people are taking advantage of distance learning courses and during the last few years enormous research efforts have been dedicated to the development of distance learning systems. So far, many e-learning systems are proposed and used practically. However, in these systems the e-learning completion rate is about 30 percents. One of the reasons is the low study desire when the learner studies the learning materials. In this research, we propose an e-learning system, which includes three subsystems: the learning subsystem, learner support subsystem, and teacher support subsystem. The learning subsystem improves the learners study desire. The learner support subsystem supports the learner during the study, and the teacher support subsystem support the teacher to get the learner's study state. In the future work, we would like to add other functions to improve more the system performance.
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