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Monoecism Algorithm in the Application of E-commerce Information Security
Qingjie Zhang,Jianming Zhu,Xiaoxu Wang,Yapan Li 보안공학연구지원센터 2015 International Journal of Security and Its Applicat Vol.9 No.3
With the development of e-commerce industry, the security of business information has attracted a lot of attention. The paper [1] puts forward the monoecism watermarking algorithm. The algorithm divides image into two parts: ROI (Region of interest) and RONI (Region Of Non Interest), and respectively deal with the two parts. Female watermark and male watermark are embedded into the RONI at the same time, and generate embedding watermark of the image. As is known to all, the integrity of ROI is also very important in e-commerce. This paper tries to apply the monoecism watermarking algorithm to e-commerce information security. The author gives six applications of the algorithm in electronic commerce that is graphical physical paper, electronic paper anti-counterfeiting, electronic seal, copyright protection, digital fingerprint generation, secure communication protection. This author introduced the embedding watermark and extracting watermark process and detection process of monoecism watermark algorithm. Through the analysis of simulation experiment of six application fields of monoecism watermark algorithm in the e-commerce information security, the simulation experiment has verified the validity of the algorithm. In a word, this paper has discussed the general rules of selecting ROI and the specific rules of selecting ROI in e-commerce applications. The simulation results are given, and the satisfactory results have been achieved.
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Hao Hu,Xiaogang Sun,Wei Chen,Jie Wang,Xu Li,Yapan Huang,Chengcheng Wei,Guodong Liang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2019 NANO Vol.14 No.7
Carbon nanotubes (CNTs) were doped by ammonium borate as the sources of nitrogen and boron. Under the protection of Ar gas, boron-nitrogen doped CNTs were prepared through nitriding and boronization at high temperature. It is a conductive additive. Then, the obtained CNTs were mixed with activated carbon (AC), SP, sodium dodecyl sulfate (SDS), and cellulose fiber to prepare electrodes. With all the materials, a symmetric electric double-layer supercapacitor (EDLC) was assembled. Next, the materials and electrodes were also characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The factors, chemical connections, and specific surface area of the CNTs were analyzed by X-ray energy spectrum analysis (EDS), X-ray photoelectron spectroscopy (XPS), as well as a specific surface area and porosimetry analyzer (BET). In addition, the electrochemical performances of electric double-layer capacitors were tested with the help of cyclic voltammetry, constant-current charging and discharging, and so on. From the results, we can make a conclusion, that is, both B and N atoms were added into the CNTs and formed bonds successfully with carbon atoms mutually. Besides, the specific surface area is about 1.5 times than that of the CNT. When the charge/discharge current density reaches 50 mA/g, we can find that the mass specific capacitance of the capacitor can run up to 32.19 F/g. Also, we observe that the maximum power density is close to 220 W/kg (700 mA/g), and the energy density can arrive 9.31 Wh/kg (50 mA/g). Based on the impedance test, the electrodes are characterized with low impedance. After 2000 cycles, the boron-nitrogen doped double-layer capacitors maintain a capacitance retention ratio of above 95%. Its power density can still achieve 220 W/kg when the energy density keeps at 3.46 Wh/kg. In other words, the electrochemical performance functions of the electric double-layer capacitors are enhanced while the CNTs serve as the electrodes.
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