Kai-wen Cheng

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In 2009, Chen et al. proposed a satellite communication system for mobile devices to achieve wide communication. In this scheme, there are some security loopholes that need to be fixed since the mobile device was stolen. Since a malicious attacker intercepts the mobile user's information they can proceed with different attacks. Hence, we propose a novel(More)
This study examines the effect of contraceptive knowledge on fertility during the period when Taiwan's family planning programs were in effect. This study contributes to previous studies by directly measuring individ-ual's contraceptive knowledge and fertility, as well as applying an instrumental variable approach to gauge the effect of contraceptive(More)
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