Yung-Wei Kao

A Web-based, Offline-able, and Personalized Runtime Environment for executing applications on mobile devices

An increasing number of people use cell phones daily. Users are not only capable of making phone calls, but can also install applications on their mobile phones. When creating mobile applications, developers usually encounter the cross-platform incompatibility problem (for example, iPhone applications cannot be executed on the Android platform). Moreover, because mobile Web browsers have increasingly supported more and more Web-related standards, Web applications are more possible to be executed on different platforms than mobile applications. However, the problem of Web application is that it cannot be executed in offline mode. This study proposes a Web-based platform for executing applications on mobile devices. This platform provides several services for developers such as offline service, content adaptation service, and synchronization service. With the help of the proposed platform, application developers can develop and publish offline Web applications easily with simplified external Web content and synchronization capability. Highlights A Web-based, Offline-able, and Personalized Runtime Environment is proposed. This research solves the problem of application development on mobile devices. This research solves the problem of application publication on mobile devices. This research solves the problem of application installation on mobile devices. This research solves the problem of application execution on mobile devices.

Physical Access Control Based on QR Code

Nowadays, the authentication methods of physical access control such as key, smart card, and OTP (One Time Password) card require extra hardware, and it is not easy to be aware of if they are lost because of the low using rate. Nowadays, mobile phone is one of the most common used and carry-on device. It would be detected in a shorter time when a mobile phone is lost because it was frequently used in daily time. One of the advantage of OTP is that it is only used once and it is securer compared to the fixed password. QR code is a kind of two-dimension matrix code, which has high encryption and decryption speed; it can not only store large information but also has the error-correction ability. In this paper, we try to develop a safe and efficient authentication way by using mobile phone and implement it for access control system. We take the advantage of one-time usage by using OTP, and store the secret information into QR code. Therefore, the proposed system enhances the security of physical access control systems.

Integration of Face and Hand Gesture Recognition

Face recognition and hand gesture recognition technologies have been developed separately for many years. Usually they are treated as independent systems. In this paper, we integrate the face and hand gesture recognition. We claim that the face recognition rate can be improved by hand gesture recognition. Also, we propose a security elevator scenario. Finally, we simulate this security elevator scenario by PCA method, based on the ORL database, and show that the face recognition rate and overall accuracy is improved after integration. We believe that this is a general method to integrate two recognition engines, not only for face and hand gesture recognition.

User-configurable semantic home automation

The ideas of smart home and home automation have been proposed for many years. However, when discussing homes of the future, related studies have usually focused on deploying various smart appliances (or devices) within a home environment and employing those appliances automatically by pre-defined procedures. The difficulties of supporting user-configurable automation are due to the complexity of various dynamic home environments. Moreover, within their home domains, users usually think semantically; for example, I want to turn off all the lights on the second floor. This paper proposes a semantic home automation system, USHAS (User-configurable Semantic Home Automation System), which adopts Web Service and WSBPEL for executing automated process; OWL and OWL-S for defining home environments and service ontology; and a self-defined markup language, SHPL (Semantic Home Process Language), for describing semantic processes. Highlights This paper designed a user-configurable home automation system. The USHAS Ontology is designed for semantic service description. The SHPL is designed for describing high level semantic process. The system prototype is implemented. An usability survey is conducted to show that the proposed system is user friendly.

A Client Framework for Massively Multiplayer Online Games on Mobile Devices

Massively Multiplayer Online Game (MMOG) is the recently popular game genre that is capable of supporting more than thousands of players in a persistence game world concurrently With the growing of mobile game market size and improvement of wireless technology, a MMOG on mobile device is possible and being concerned. There are many issues that may be encountered when developing a MMOG. Since the mobile game must be created to run on hundreds of device, to deploy and distribute the MMOG on mobile device is harder. Also, the mobile application is easily interrupted by the surrounding environment, such as telecom service or network connectivity. Those make the mobile online game development more challenging. In this paper, we will propose a client framework for MMOG on mobile device that consider both MMOG and mobile games issues. We provide a flexible and easy-to-deploy platform for mobile MMOG.

A Cross-Platform Runtime Environment for Mobile Widget-Based Application

In recent years, the market of mobile device keeps growing dramatically. Apple iPhone and Google Android are the two representatives of this kind of devices. However, the mobile applications of these platforms can only be executed on some specific platforms; these applications are not portable to other platforms. Another kind of application is Web-based widget, such as Yahoo! Mobile Widget. This kind of application can be executed on different mobile platforms if there are local runtime environments installed on them. However, Yahoo has to provide a different runtime environment for each different mobile platform; if there is any platform which is not supported by Yahoo, Yahoo! Mobile Widget cannot be executed. Most of the Web applications can be executed on mobile devices because more and more Web-related standards are supported by mobile Web browsers. However, the drawback of Web application is that it cannot be executed without Internet connection. In this paper, we propose a Web-based widget execution runtime environment and adopt the Google Gears technology for offline execution. In this way, mobile users can enjoy Web applications via their mobile Web browsers even if their phones are under offline mode.

A Generic Publish/Subscribe Framework for Peer-to-Peer Environment

At present, the structured P2P algorithms have been proposed frequently. Consequently, the P2P application developers need to learn different API semantics. It causes additional efforts of switching to different P2P topologies for P2P applications. Moreover, it is difficult for the developers to evaluate the performance of an application based on a particular underneath P2P APIs. In this research, a novel P2P framework is proposed to assist in developing P2P applications by using various structured P2P protocols and P2P pub/sub algorithms. We construct the structured P2P functional blocks, including network communication components, P2P topology maintenance and routing, network bootstrapping, as well as pluggable pub/sub services in our system. By Comparing to other P2P libraries and platforms, our framework achieves a great success on providing a flexible and extensible development platform.

A P2P Blog System with OpenID Integration

Blog services become popular in recently years. Web users can post their articles through the services. On the other hand, the users do not have full control of the articles after posted while the services are built with client/server model. Therefore, we propose to use peer-to-peer (P2P) technology to establish blog services. However, the anonymous feature disables the P2P technology to conduct user identification. The OpenID provides secure and unified authentication mechanism to improve the anonymity. In addition, the OpenID has the single sign on procedure to reduce redundant, multiple accounts and passwords. The paper presents a blog service platform which integrates the P2P networks and the OpenID authentication mechanism together. Therefore, user scan establish their own blogs easily with full control. The platform can be utilized for other Internet applications as well.

HVPN: The Combination of Horizontal and Vertical Pose Normalization for Face Recognition

Face recognition has received much attention with numerous applications in various fields. Although many face recognition algorithms have been proposed, usually they are not highly accurate enough when the poses of faces vary considerably. In order to solve this problem, some researches have proposed pose normalization algorithm to eliminate the negative effect cause by poses. However, only horizontal normalization has been considered in these researches. In this paper, the HVPN (Horizontal and Vertical Pose Normalization) system is proposed to accommodate the pose problem effectively. A pose invariant reference model is re-rendered after the horizontal and vertical pose normalization sequentially. The proposed face recognition system is evaluated based on the face database constructed by our self. The experimental results demonstrate that pose normalization can improve the recognition performance using conventional principal component analysis (PCA) and linear discriminant analysis (LDA) approaches under varying pose. Moreover, we show that the combination of horizontal and vertical pose normalization can be evaluated with higher performance than mere the horizontal pose normalization.

P2P Based Auction System Integrated with OpenID

In recent years, online auction systems such as eBay have been more and more popular. The client-server architecture is usually adopted for the basic architecture of online auction systems. However, the client/server architecture usually causes the problems of bandwidth bottleneck and insufficient storage spaces. Therefore, we propose to replace the client/server architecture of traditional online auction systems to P2P architecture for distributing the loading and storage requirement to peers by sellers and buyers. Also, OpenID is exploited to be integrated into our system so that users do not have to remember multiple accounts and passwords. In this paper, the design of an OpenID integrated P2P auction system is proposed. Also, the comparison of our system design and other related P2P auction systems will be discussed.