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Double-Blind Compact E-cash from Bilinear Map
Jiyang Chen,Bin Lian,Yongjie Li,Jialin Cui,Ping Yu,Zhenyu Shu,Jili Tao 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.4
Compact E-cash is the first scheme which can withdraw 2l coins within (1) operations and then store them in ( ) bits. Because of its high efficiency, a lot of research has been carried out on its basis, but no previous research pay attention to the privacy of payees and in some cases, payees have the same privacy requirement as payers. We propose a double-blind compact E-cash scheme, which means that both the payer and the payee can keep anonymous while spending. In our scheme, the payer and the bank cannot determine whether the payees of two different transactions are the same one and connect the payee with transactions related to him, in this way, the privacy of the payee is protected. And our protocols disconnect the received coin from previous transaction, then, the coin can be transferred into an unspent coin which belongs to the payee. The proposed e-cash scheme is secure within y-DDHI and LRSW assumption.
Study on preparation and characterization of uniform bismuth nanospheres
Nianjing Ji,Ziqing Li,Yang Chen,Jiyang Wang,Xiulan Duan,Huaidong Jiang 한양대학교 세라믹연구소 2018 Journal of Ceramic Processing Research Vol.19 No.5
The uniform and monodisperse bismuth nanospheres were successfully prepared by simple and convenient solvothermalmethod. The bismuth nitrate was reduced by ethylene glycol at 150-200 oC for 20-30 hrs. The nanospheres were characterizedby powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The dispersivity of bismuthnanospheres was investigated using optical microscope. The optimum reaction conditions to prepare the uniform bismuthnanospheres with a narrow diameter range was investigated. The results indicate that the monodisperse bismuth nanospheresprepared at 200 oC possess sizes ranging from 100-200 nm. The formation mechanism of the bismuth nanospheres washypothesized.
Feng Ding,Dandan Meng,Jiyang Dai,Qishen Li,Ahmed Alsaedi,Tasawar Hayat 제어·로봇·시스템학회 2018 International Journal of Control, Automation, and Vol.16 No.2
By means of the model equivalence theory, this paper proposes a model equivalence based least squares iterative algorithm for estimating the parameters of stochastic dynamical systems with ARMA noise. The proposed algorithm reduces the number of the unknown noise terms in the information vector and can give more accurate parameter estimates compared with the generalized extended least squares algorithm. The validity of the proposed method is evaluated through a numerical example.
Tissue-Specific CRISPR/Cas9 System of Cotton Pollen with GhPLIMP2b and GhMYB24 Promoters
Lei Jianfeng,Dai Peihong,Li Jiyang,Yang Mi,Li Xiuqin,Zhang Wanqi,Zhou Guantong,WangzhenGuo,Liu Xiaodong 한국식물학회 2021 Journal of Plant Biology Vol.64 No.1
CRISPR/Cas9 technology is a powerful tool for improving crop genetic traits. However, CRISPR/Cas9 system for efficient expression of cotton germ cells has still not been established. In this study, we developed a tissue-specific vectors to drive Cas9 expression with GhPLIMP2b and GhMYB24 promoters and established the effective method to transform cotton pollen by Agrobacterium vacuum infiltration. GhPLIMP2b and GhMYB24 promoters of cotton pollen were cloned into Cas9 expression vectors. The sgRNAs targetting to CLA1, ERA1 and GGB (drought-resistant negative regulation genes) were designed and constructed into GhPLIMP2b and GhMYB24 promoter vectors. Cotton pollens were tranformed by Agrobacterium vacuum infiltration with GhPLIMP2b and GhMYB24 promoter vectors. The results of clone sequencing shown that mutation types of the sequence were mainly base substitutions wth the frequency from 3.29 to 6.45%. Eleven potential off-target sites were chosen and two sites were observed. Our results indicated that GhPLIM2bP::Cas9 and GhMYB24P::Cas9 editing vectors achieved targeted edition of endogenous genes in cotton pollen, but there were a few off-target effects. This study provides an effective gene-editing system for the rapid acquisition of cotton mutants using pollen as a transgenic receptor.