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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.
Baohong Zhu,Yong’an Zhang,Baiqing Xiong,Hongwei Liu,Likai Shi,Songxiao Hui 한양대학교 세라믹연구소 2006 Journal of Ceramic Processing Research Vol.7 No.2
Heat-resistant Al-Fe-V-Si aluminum alloys enhanced by in-situ TiC particles have been prepared by spray forming process with suitable process parameters. Research results show that the microstructure of the as-deposited alloy is fine and homogeneous. In-situ TiC particles prevent the unstable phases from coming into being. On the other hand, the TiC particles increase the volume fraction of heat-resistant phases. So the mechanical properties of the reinforced alloy by in-situ TiC particles are better than that of Al-Fe-V-Si alloy without the TiC particles. The hot extrusion temperature is also an important parameter to be considered. It is proved better to extrude the alloy at lower temperature. The tensile strength of the alloy without TiC particles is about 435 MPa at room temperature and is about 204 MPa at 350oC. However, when the alloy is enhanced by in-situ TiC particles, the strength of alloy is about 482 MPa at room temperature and is about 224 MPa at 350oC.
Du Baohong,Shi Fengling,Gao Guiping,Cai Liyan 한국초지조사료학회 2009 한국초지조사료학회 학술대회논문집 Vol.2009 No.08
The root crown of forage legume is an important organ which connects underground root system and aboveground branches. And its morphological characteristic is closely related to yield of grass, overwintering ability, regeneration in spring and sustainable productivity of Medicago sativa L. Therefore, in order to understand the morphological mechanism on cold resistance of the root of Melilotoides ruthenica (L.) Sojak t㏊t is a relative species of M sativa, the root morphology of different growth years' M ruthenica had been observed and analyzed. It aims to provide theoretical basis to M. sativa genetic improvement.
Design of cross-linked baffle and analysis of its wave suppression characteristics
Minmin Shen,Baohong Tong,Chuanbin Sun,Hu Huang,Kun Zhang 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.12
Under variable speed condition, oil in a fuel tank is shaken violently, thereby causing damage to the fuel tank structure and supply interruption, affecting the safe driving of the vehicle. A structural design scheme of a fuel tank with cross-linked baffle is proposed. Oil sloshing in the fuel tank under braking conditions is numerically simulated using a method verified by experiments. The characteristics of cross-linkage baffled fuel tanks to inhibit oil sloshing are analysed. The results show that the baffles can be linked when stiffeners are installed between baffles in the fuel tank. Applying the force opposite to the oil impact pressure improves the rigidity of the baffle and enables a reduction in fatigue damage. The cross-linked baffled has little influence on the baffle wall pressure but has a certain impact on the shape of oil sloshing. With the increase of braking acceleration, the jet velocity of the oil passing through the baffle pores increases, and the nonlinear phenomenon caused by the jet hitting the liquid surface is further aggravated. With the rise of the fuel tank filling rate, the jet velocity of the oil passing through the baffle pores decreases, and the intensity of sloshing is reduced. The vortex generated near the cross-linked baffle changes the flow field structure, reduces the oil climbing speed, and ultimately restrains sloshing.
How Household Roles Influence Individuals’ Travel Mode Choice under Intra-household Interactions?
Yanjie Ji,Yang Liu,Qiyang Liu,Baohong He,Yu Cao 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.11
The household is usually an essential element for activity-based travel decision-making of individuals. From the perspective of household context, activities are often allocated to individuals based on their household roles, thereby affecting individuals’ travel behavior. By defining the household role using spatial-temporal constraints which are associated with individual activities and household activities, this paper investigates the travel mode choice of individuals considering the effect of different household roles. The descriptive statistics of the household roles and their corresponding travel mode choice are presented using the data from Kunming, China. The statistical results show that the modal splits between females and males perform a significant difference in the same household roles. Furthermore, the travel mode choice of females and males are estimated separately using multinomial logistic regression model. The results show that those who face more space-time constraints associated with household tasks are less willing to travel by car. While with the increase of commuting constraints, household heads, especially female-heads, tend to use car to meet the travel demands of household activity. Besides, individuals’ age, education level, the number of cars and bikes in household also have a significant impact on travel mode choices of individuals.
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>
Recoating slurry process effects on the SiC-based casting foam filter properties
Fengzhang Ren,Gangjun Zhai,Zhanhong Ma,Alex A. Volinsky,Baohong Tian 한양대학교 세라믹연구소 2014 Journal of Ceramic Processing Research Vol.15 No.2
Polyurethane foam was used as a precursor for fabricating SiC-based ceramic foam filters. Two recoating slurry processes were adopted to enhance the strength of ceramic foam. One was the recoating slurry of stoved green body and another was the recoating slurry of pre-sintered green body. The differences in weight increase and thermal shock resistance of ceramic foams fabricated by the two recoating slurry processes were investigated. The effects of pre-sintering temperature on weight increase and thermal shock resistance are discussed. Thermal shock resistance of ceramic foams fabricated by two recoating slurry processes is lower than that by the single coating slurry process. Compared with recoating slurry of pre-sintered green bodies, with the same slurry, the weight increase of ceramic foams fabricated by recoating slurry of the stoved green bodies is less, but the number of thermal cycles to failure is much higher. For ceramic foams fabricated by recoating slurry of presintered green bodies with the same slurry, the weight increase and the number of thermal cycles to failure decreased with the pre-sintering temperature.