Keynote Speakers


           Chin-Chen Chang (張真誠)                                  Cho-Li Wang (王卓立)



Chin-Chen Chang (張真誠)

Department of Information Engineering and Computer Science,
Feng Chia University, Taiwan

Chin-Chen Chang received his BS degree in applied mathematics in 1977 and the MS degree in computer and decision sciences in 1979, both from the National Tsing Hua University, Hsinchu, Taiwan. He received his Ph.D in computer engineering in 1982 from the National Chiao Tung university, Hsinchu, Taiwan. During the academic years of 1980-1983, he was on the faculty of the Department of Computer Engineering at the National Chiao Tung University. From 1983-1989, he was on the faculty of the Institute of Applied Mathematics, National Chung Hsing University,Taichung, Taiwan. From August 1989 to July 1992, he was the head of, and a professor in, the Institute of Computer Science and Information Engineering at the National Chung Cheng University, Chiayi, Taiwan. From August 1992 to July 1995, he was the dean of the college of Engineering at the same university. From August 1995 to October 1997, he was the provost at the National Chung Cheng University. From September 1996 to October 1997, Dr. Chang was the Acting President at the National Chung Cheng University. From July 1998 to June 2000, he was the director of Advisory Office of the Ministry of Education of the R.O.C. From 2002 to 2005,he was a Chair Professor of National Chung Cheng University. Since February 2005, he has been a Chair Professor of Feng Chia University. Professor Chang has won many research awards and honorary positions by and in prestigious organizations both nationally and internationally. He is currently a Fellow of IEEE and a Fellow of IEE, UK. And since his early years of career development, he consecutively won Outstanding Youth Award, Outstanding Talent in Information Sciences, AceR Dragon Award of the Ten Most Outstanding Talents, Outstanding Scholar Award,Outstanding Engineering Professor Award, Chung-Shan Academic Publication Awards, Distinguished Research Awards of National Science Council of the R. O. C., Outstanding Scholarly Contribution Award of the International Institute for Advanced Studies in Systems Research and Cybernetics, Top Fifteen Scholars in Systems and Software Engineering of the Journal of Systems and Software, and so on. In addition, he has served as a consultant to several research institutes and government departments. His current research interests include database design, computer cryptography, image compression and data structures.
Title : Authenticatable Visual Secret Sharing
The computer technologies have grown significantly in the past years. More and more multimedia products such as digital cameras have become popular, so digital images are shared and transmitted widely over Internet. However, transmitting secret or important images, such as military or commercial images, over Internet is very dangerous. Malicious users may monitor Internet and try to eavesdrop these valuable images. To protect these images, visual cryptography is necessary for secure communications over Internet. Herein, secret image sharing can be applied to achieve the goal of visual
cryptography. In this speech, I will talk about some visual cryptosystems based on the concept of secret image sharing. Also, I'll talk about the concept of designing an authenticatable visual secret sharing. As for the topic of secret image sharing, the secret image sharing scheme uses several noise-like images, called shadows, to replace the original image transmitting over the Internet. The shadows can avoid threats from the illegal persons to access the secret image directly. Secret image sharing techniques were proposed to be another branch outside traditional cryptographic techniques and steganography. Based on sharing secret images, visual cryptography for binary images,
grayscale images and color images will be introduced.


Cho-Li Wang (王卓立)

The University of Hong Kong

     Dr. Cho-Li Wang received his B.S. degree in Computer Science and Information Engineering from National Taiwan University in 1985. He obtained his M.S. and Ph.D. degrees in Computer Engineering from University of Southern California in 1990 and 1995 respectively. He joined our Department in September 1995. Dr. Wang's research mainly focuses on Cluster and Grid Computing.  His current research involves : Grid middleware, Distributed Java Virtual Machine on Clusters, and Software Systems for Pervasive/Mobile Computing. Dr. Wang serves as an editorial board member for several journals, including IEEE Transactions on Computers (TC), Multiagent and Grid Systems (MAGS), International Journal of Pervasive Computing and Communications (JPCC), Journal of Information Science and Engineering (JISE), and ICST Transactions on Scalable Information Systems, etc. Dr. Wang is currently a regional coordinator of IEEE Technical Committee on Scalable Computing (TCSC).

Title: Towards High Productivity Computing - The Distributed JVM Approach
     With distinguished cost-effectiveness, agility for growth and high-availability, commodity multicore (or GPU) clusters have been the dominant architecture for building supercomputers and large-scale servers. To meet the performance goal, relevant research efforts have shown notable convergence to shifting the effort of controlling shared data distribution and affinity to programmers. Such an approach seems appealing for engineering and scientific applications, but certainly not the much wider application domains like web and enterprise applications. It also involves the design of new programming languages or the use of new language constructs. Considering the
computer architecture changed almost every 3-5 years, large enterprises and software houses cannot risk spending long years writing their code in a new language only to find that the new language didn't gain general acceptance and support.

In this talk, we will review the new landscape of parallel computer architecture (e.g., Petaflop supercomputers) and introduce a generic and easy-to-use parallel programming model, coming out from the latest research in distributed Java virtual machines (DJVM). The design of DJVM adheres to the standard JVM specification, and ideally all
applications that follow the original Java multithreaded programming model on a single machine can now be executed in a true parallel machine. This approach makes it possible for ordinary programmers to scale out their applications on large-scale clusters without using sophisticated constructs or other libraries, thus achieving high productivity. The talk reports our recent progress on the development of a DJVM, called JESSICA, which is currently used for offering parallel computing services for the China National Grid (CNGrid).