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- 저자 : ( Juntao Gao ) (검색결과 4 건)
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Analyze Requirements for PAIS with Best Practice
Juntao GAO,Xueshan Wang,Yongan WANG 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.2
Traditional requirements analysis is focused on capture functions of the system that are being built from scratch. As the size and complexity of process-aware information system continues to grow, the use of COTS (Commercial off-the-shelf) software packages is being viewed as a solution. Use of COTS packages accelerates the implementation process to some extent, however, it puts enterprises into a dilemma: whether to adapt as-is business processes or to customize software packages. In order to help the enterprises get out of the dilemma, a methodology is proposed to automatically elicit software requirement using best practice as domain knowledge. The methodology involves three phases: business modeling, gap detecting and gap bridging. Firstly, VPML is employed to describe as-is business process, Secondly, semantics computing technology is employed to analyze the gap between enterprise needs and COTS software capacity. At last, Goal Reasoning Technology is employed to encourage enterprise users and software vendors take participate in decision making process together.
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Efficient Certificateless Signature Scheme on NTRU Lattice
( Jia Xie ),( Yupu Hu ),( Juntao Gao ),( Wen Gao ),( Mingming Jiang ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.10
Because of the advantages of certificateless and no escrow feature over the regular signature and identity-based signature, certificateless signature has been widely applied in e-business, e-government and software security since it was proposed in 2003. Although a number of certificateless signature schemes have been proposed, there is only one lattice-based certificateless signature scheme which is still secure in the quantum era. But its efficiency is not very satisfactory. In this paper, the first certificateless signature scheme on NTRU lattice is proposed, which is proven to be secure in random oracle model. Moreover, the efficiency of the new scheme is higher than that of the only one lattice-based certificateless signature.
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Secure Electronic Ticketing System based on Consortium Blockchain
( Xuelian Li ),( Jie Niu ),( Juntao Gao ),( Yue Han ) 한국인터넷정보학회 2019 KSII Transactions on Internet and Information Syst Vol.13 No.10
In electronic ticketing system, the malicious behavior of scalpers damages the customer’s interest and disturbs the normal order of market. In order to solve the problem of scalpers, we took two steps. Firstly, we established the electronic ticketing system based on the consortium blockchain (CB-ETS). By establishing CB-ETS, we can make the ticketing market develop better in a controlled environment and be managed by the members in the consortium blockchain. Secondly, we put forward a kind of taxation mechanism for suppressing scalpers based on CB-ETS. Together with the regulatory mechanism, our scheme can effectively reduce the scalpers’ profits and further inhibit scalpers. Through the above two steps, the scheme can effectively resist the malicious behavior of scalpers. Among them, in the process of transferring tickets, we optimized the transfer mechanism to achieve a win-win situation. Finally, we analyzed the security and efficiency of our scheme. Our scheme realizes the anonymity through the mixed currency protocol based on ring signature and guarantees the unforgeability of tickets by multi-signature in the process of modifying the invalidity of tickets. It also could resist to Dos attacks and Double-Spending attacks. The efficiency analysis shows that our scheme is significantly superior to relevant works.
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Loss and Efficiency Analysis of the Brushless Direct Current Motor with an Amorphous Stator Core
Lai Yifan,Hu Xiaolu,Shi Guibing,Yu Juntao,Wang Li,Gao Zhifeng 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.3
Due to the demand for energy conservation, the loss and efficiency of a brushless direct current (BLDC) motor is investigated. In order to improve the motor efficiency, we make efforts to reduce the loss by replacing the silicon steel (SS) stator with amorphous metal (AM) stator and improving the motor design. The motor performance is analyzed by simulations and experiments, and the processing influence on loss of AM material is also considered. It shows that the performance of the AM core deteriorates due to the stress introduced during the core processing, but the utilization of AM material and the optimization design can improve the motor efficiency by 4.76%. In addition, the weight of the motor is reduced by 11.36% than that of the initial motor. This research can provide a reference for the initial design and performance evaluation of AM BLDC motors.
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