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Attribute Set Based Signature Secure in the Standard Model
( Baohong Li ),( Yinliang Zhao ),( Hongping Zhao ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.4
We introduce attribute set based signature (ASBS), a new cryptographic primitive which organizes user attributes into a recursive set based structure such that dynamic constraints can be imposed on how those attributes may be combined to satisfy a signing policy. Compared with attribute based signature (ABS), ASBS is more flexible and efficient in managing user attributes and specifying signing policies. We present a practical construction of ASBS and prove its security in the standard model under three subgroup decision related assumptions. Its efficiency is comparable to that of the most efficient ABS scheme.
BaoHong Zhao,WeiMing Tian,HaiLan Feng,이인섭,FuZhai Cui 한국물리학회 2005 Current Applied Physics Vol.5 No.5
The aim of this study is to test the adhesion of human gingival broblasts (HGFs) and epithelial cells (HGEs) to titanium surfaceby RGD grafting for dental implant, and to obtain an eective perimucosal seal of soft tissue to the implant. RGD peptides werecovalently attached to the titanium surface by CDI activation method to improve the adhesion of gingival cells to the titanium den-tal implants. HGFs and HGEs were inoculated on commercially pure (CP) titanium and RGD-grafted titanium. The number ofattached and proliferated cells was quantied by morphometric analysis using immunouorescence. The results showed that the bio-active peptide RGD was grafted on CP titanium by CDI activation method. The RGD grafting exhibited that the number ofattached and proliferated broblasts and epithelial cells were higher than that on CP titanium. The RGD-grafting is advantageous. to gingival cells adherence to the surface of titanium implant.
Guo Xiaofeng,Yang Kun,Yang Wei,Zhao Long,Li Shenghai,Ding Baohong 한국기상학회 2020 Asia-Pacific Journal of Atmospheric Sciences Vol.56 No.4
Using eddy-covariance turbulence measurements over a Tibetan glacier, we present a description of scalar turbulence characteristics in the stable boundary layer. Interesting behaviours are demonstrated in terms of temperature–humidity de-correlation and dissimilarity. That is, a lack of perfect correlation occurs between the two scalars (i.e., correlation coefficients <1 in magnitude); overall, sensible heat is more efficiently transported than water vapour over snow and ice surfaces. Such behaviours provide evidence of departures from the idealized expectation of Monin–Obukhov similarity theory—all scalars assume a perfect level of linear correlation and an equal efficiency level of vertical transport. Results presented herein are noteworthy in that observations over uniform glaciated surfaces involve negligible effects of either a canopy-induced roughness sublayer or heterogeneity in the temperature–humidity source/sink distributions. Moreover, we address two different approaches to representing the heat-to-moisture transport efficiency in stable conditions. A new approach is extended through application of the quadrant analysis technique, thereby representing it as a function of atmospheric stability. Caution is further advised in the use of this approach, when temperature–humidity turbulence becomes markedly de-correlated. A second approach, as previously applied for estimating forest evaporation fluxes in unstable conditions, is extended to a stable boundary layer over snow and ice surfaces.
Yamada, Atsushi,Takami, Masamichi,Kawawa, Tadaharu,Yasuhara, Rika,Zhao, Baohong,Mochizuki, Ayako,Miyamoto, Yoichi,Eto, Tomoo,Yasuda, Hisataka,Nakamichi, Yuko,Kim, Nacksung,Katagiri, Takenobu,Suda, Tat Blackwell Publishing Ltd 2007 Immunology Vol.120 No.4
<P>Summary</P><P>Interleukin (IL)-4 and IL-13 are closely related cytokines known to inhibit osteoclast formation by targeting osteoblasts to produce an inhibitor, osteoprotegerin (OPG), as well as by directly targeting osteoclast precursors. However, whether their inhibitory actions are the same remains unclear. The inhibitory effect of IL-4 was stronger than that of IL-13 in an osteoclast-differentiation culture system containing mouse osteoblasts and osteoclast precursors. Both cytokines induced OPG production by osteoblasts in similar time- and dose-dependent manners. However, IL-4 was stronger in direct inhibition that targeted osteoclast precursors. Furthermore, IL-4 induced phosphorylation of signal transducer and activator of transcription-6 (STAT6) at lower concentrations than those of IL-13 in osteoclast precursors. IL-4 but not IL-13 strongly inhibited the expression of nuclear factor of activated T-cells, cytoplasmic 1 (nuclear factor-ATc1), a key factor of osteoclast differentiation, by those precursors. Thus, the activities of IL-4 and IL-13 toward osteoclast precursors were shown to be different in regards to inhibition of osteoclast differentiation, whereas those toward osteoblasts for inducing OPG expression were equivalent.</P>