1School of Medicine, University of Queensland, Queensland 4072, Australia. 2Department of Dermatology, Shuang Ho Hospital, Taipei Medical University, Taipei 235, Taipei, China. 3School of Public Health, College of Public Health and Nutrition, Taipei Medical University, Taipei 110, Taipei, China. 4Department of Dermatology, Taipei Medical University Hospital, Taipei 110, Taipei, China. 5Departme...

This study aims to investigate the existence of herding behaviour during COVID-19 crisis in Egyptian stock market by using firm-level data and employing different testing methodologies. The also investigates at level portfolios divided based on size value factors. used nonlinear model proposed Chang, Cheng Khorana (2000) state-space developed Hwang Salmon (2004) measure behaviour. found that Ch...

The World Wide Web (WWW) has been recognized as the ultimate and unique source of information for information retrieval and knowledge discovery communities. Tremendous amount of knowledge are recorded using various types of media, producing enormous amount of web pages in the WWW. Retrieval of required information from the WWW is thus an arduous task. Different schemes for retrieving web pages ...

Jing-Kai Huang, Jiang Pu, Chang-Lung Hsu, Ming-Hui Chiu, Zhen-Yu Juang, Yung-Huang Chang, Wen-Hao Chang, Yoshihiro Iwasa, Taishi Takenobu,* and Lain-Jong Li * Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan, Department of Applied Physics, Waseda University, Tokyo 169-8555, Japan, Department of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan, Q...

a Institute of Electrical Engineering, Slovak Academy of Sciences, Dúbravská cesta 9, 841 04 Bratislava, Slovakia b Department of Physics, University of Central Florida, Orlando, FL 32816-2385, USA c Graduate Institute of Electro-Optical Engineering, Chang Gung University, Tao-Yuan 333, Taiwan d Institute of Electro-Optical Engineering, Green Technology Research Center, Chang Gung University, T...

Password-based authentication schemes have been widely adopted to protect resources from unauthorized access. In 2008, Chang-Lee proposed a friendly password-based mutual authentication scheme to avoid the security weaknesses of Wu-Chieu’s scheme. In this paper, we demonstrate that Chang-Lee’s scheme is vulnerable to user impersonation attack, server masquerading attack, password guessing attac...

In 2003, Hwang et al. proposed a new blind signature based on the RSA cryptosystem by employing Extended Euclidean algorithm. They claimed that the proposed scheme was untraceable and it could meet all requirements of a blind signature. In 2004, Chang and Chang indicated that the signer in Hwang et al.’ scheme could trace the blind signature applicant in some cases. However, the authors find th...

We generalize the results of Chang-Li, Kim-Oh and Chang-Li on moduli $p$-fields to setting (quasi-)maps complete intersections in arbitrary smooth Deligne-Mumford stacks with projective coarse moduli. In particular, we show that virtual cycle stable a intersection can be recovered by cosection localized ambient space.