http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Shi Yihan (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Shi Yihan,Zhang Ming,Zhao Junshan,Zhang Liu,Cui Xumei,Zhu Xinhua,Jin Dandan,Gong Jiali,Yang Dingyu,Li Jitao 대한금속·재료학회 2022 ELECTRONIC MATERIALS LETTERS Vol.18 No.5
This work used a simple electrochemical reduction method to secondary construct the reduced nickel base (rNi Base) on nickel foam with a nano-core structure. The secondarily constructed base has a large specific surface area, which can increase the mass utilization of the active material. The rNi Base was used as a base for the reduction of nickel on Na+, K+, and NH+4, respectively. MnO2 was electrodeposited under three different cation pre-intercalation treatments, and the mechanism of the effect of different monovalent cations to guide the growth of MnO2 materials was investigated. Finally, rNi/MnO2&Na+ electrode with a special nano cauliflower structure was obtained. The special nanostructure of the electrode enhances its electrochemical performance, possessing 598 F g− 1 ultra-high specific capacitance at a current density of 1 A g− 1 and a high specific capacitance of 307.5 F g− 1 at a high current density of 20 A g− 1, and high specific capacitance maintenance rate of 92.7% after 500 cycles of charging and discharging at a current density of 2 A g− 1. In addition, the symmetrical supercapacitor assembled with this electrode has a very high specific capacitance (401.1 F g− 1 at a current density of 1 A g− 1) and energy density (80.22Wh kg− 1 at a power density of 599.99 W kg− 1).
-
An Improved HB+ Protocol and its Application to EPC Global Class-1 Gen-2 Tags
Zhicai Shi,Jian Dai,Fei Wu,Yongxiang Xia,Yihan Wang,Changzhi Wang 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.8
RFID is a key technology that can be used to create the pervasive society. The EPCglobal Class-1 Gen-2 specification is an important standard for RFID. The tags conforming to this standard have limited computing and storing resources, and no more attentions are paid to their security and privacy. So the application of these tags is not secure. HB+ protocol is one of the typical lightweight authentication protocols suitable to these low-cost RFID tags. But it is vulnerable to active attacks. For some scenarios with frequent active attacks the efficiency of HB+ protocol will be degraded seriously. In order to improve the security and efficiency of HB+ protocol for some scenarios with frequent active attacks, a novel detection-exit-restart mechanism is proposed to monitor the integrity of the exchanged messages between the reader and the tag. The improved HB+ protocol can resist active attacks and it is more efficient and secure than HB+ protocol. This protocol only uses the computing resources embedded in tags and it is very suitable to low-cost RFID systems.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
