A Karaoke System with Real-Time Media Merging and Sharing Functions for a Cloud-Computing-Integrated Mobile Device

Mobile devices such as personal digital assistants (PDAs), smartphones, and tablets have increased in popularity and are extremely efficient for work-related, social, and entertainment uses. Popular entertainment services have also attracted substantial attention. Thus, relevant industries have exerted considerable efforts in establishing a method by which mobile devices can be used to develop excellent and convenient entertainment services. Because cloud-computing technology is mature and possesses a strong computing processing capacity, integrating this technology into the entertainment service function in mobile devices can reduce the data load on a system and maintain mobile device performances. This study combines cloud computing with a mobile device to design a karaoke system that contains real-time media merging and sharing functions. This system enables users to download music videos (MVs) from their mobile device and sing and record their singing by using the device. They can upload the recorded song to the cloud server where it is merged with real-time media. Subsequently, by employing a media streaming technology, users can store their personal MVs in their mobile device or computer and instantaneously share these videos with others on the Internet. Through this process, people can instantly watch shared videos, enjoy the leisure and entertainment effects of mobile devices, and satisfy their desire for singing

Predicting Academic Performance: A Systematic Literature Review

The ability to predict student performance in a course or program creates opportunities to improve educational outcomes. With effective performance prediction approaches, instructors can allocate resources and instruction more accurately. Research in this area seeks to identify features that can be used to make predictions, to identify algorithms that can improve predictions, and to quantify aspects of student performance. Moreover, research in predicting student performance seeks to determine interrelated features and to identify the underlying reasons why certain features work better than others. This working group report presents a systematic literature review of work in the area of predicting student performance. Our analysis shows a clearly increasing amount of research in this area, as well as an increasing variety of techniques used. At the same time, the review uncovered a number of issues with research quality that drives a need for the community to provide more detailed reporting of methods and results and to increase efforts to validate and replicate work.Peer reviewe

Improved Authenticated Multiple-Key Agreement Protocol

[[abstract]]Recently, Yen and Joye showed that Harn and Lin's authenticated multiple-key agreement protocol is insecure against forgery and consequently proposed a revised protocol to repair it. Later, Wu et al. showed that Yen and Joye's revision is also insecure and therefore an improved protocol was proposed. However, Wu et al.'s protocol violates the original requirement in which no one-way hash function is needed. On the other hand, in order to overcome Yen and Joye's and Wu et al.'s attacks, Harn and Lin proposed a modified version by modifying the signature signing equation. But the modified version increases one exponentiation in the verification equation. In this paper, we first show that Wu et al.'s protocol still suffers the forgery problem, and then we propose an improved scheme that is secure against forgery and does not involve any one-way hash function. Compared with Harn and Lin's modified version, our scheme is efficient in the verification equation.[[fileno]]2030230010015[[department]]資訊工程學

Improved authenticated multiple-key agreement protocol

AbstractRecently, Yen and Joye showed that Harn and Lin's authenticated multiple-key agreement protocol is insecure against forgery and consequently proposed a revised protocol to repair it. Later, Wu et al. showed that Yen and Joye's revision is also insecure and therefore an improved protocol was proposed. However, Wu et al.'s protocol violates the original requirement in which no one-way hash function is needed. On the other hand, in order to overcome Yen and Joye's and Wu et al.'s attacks, Harn and Lin proposed a modified version by modifying the signature signing equation. But the modified version increases one exponentiation in the verification equation. In this paper, we first show that Wu et al.'s protocol still suffers the forgery problem, and then we propose an improved scheme that is secure against forgery and does not involve any one-way hash function. Compared with Harn and Lin's modified version, our scheme is efficient in the verification equation

Efficient three-party authentication and key agreement protocols resistant to password guessing attacks

Three-party EKE was proposed to establish a session key between two clients through a server. However, three-party EKE is insecure against undetectable on-line and off-line password guessing attacks. In this paper, we first propose an enhanced three-party EKE to withstand the security risk in three-party EKE. We also propose a verifier-based three-party EKE that is more secure than a plaintext-equivalent mechanism in which a compromise of the server’s database will not result in success in directly impersonating clients

Mutual Authentication Protocol for Role-Based Access Control Using Mobile RFID

The Internet has become the main transmission media in modern information systems due to the popularization of information technology and the rapid development of network technology. To use the Internet, we need complete security mechanisms which include requirements such as integrity, security and privacy to ensure the legal user can login to a remote server to get the service and resources they need. The radio frequency identification (RFID) is a very convenient technology with the property of non-contact reading. It uses the tag embedded in the object to identify the information quickly. Now, more and more devices are equipped with the RFID reader. Hence, the user can use the RFID reader embedded in the mobile device through a wireless network to read the information on the tag and then use the service which is called Mobile RFID. Compared to traditional RFID, the characteristic of mobility makes the reading more flexible. It can deal with the events in real-time and undertake the process faster and more efficiently. The major security problem of Mobile RFID is privacy, which is also a consideration when constructing a Mobile RFID Mechanism. In this paper, we propose a secure authentication mechanism which uses the authenticated delegating mechanism in Mobile RFID to enable the reader to get the specific role authority through a back-end database server. The reader has to undertake mutual authentication with the back-end database server and the tag. Then, it can protect the information and limit the access times of the reader to achieve privacy