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RFID-based Secure Communication for Smart Device in Future Home Network Environment
Li, Nong-Jun,Choi, Kee-Hyun,Jang, Kyung-Soo,Shin, Dong-Ryeol The Institute of Internet 2013 International Journal of Internet, Broadcasting an Vol.5 No.1
We introduce, in this paper, a novel approach of protection mechanism for data which are transmitted not only between the networked devices but also between the digital media devices. As the devices are getting more powerful and more storage capacity, they can process the encoded/encrypted data autonomously. However, all devices must know the secret key that used to encrypt data, and also use secure method to distribute that key. Moreover, there are no protection mechanisms supporting end-to-end copy protection which result in the fact that the data passed through various devices can be manipulated or captured. Therefore, we propose a RFID-based key distribution and protection mechanism to resolve these problems.
Random displacement and acceleration responses of vehicles with uncertainty
Jun Dai,Wei Gao,Nong Zhang 대한기계학회 2011 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.25 No.5
Dynamic displacement and acceleration responses of cars with uncertain parameters under random road input excitations are investigated by using a quarter-car model. Based on the theory of random vibration, the vehicle’s random displacement and acceleration responses are developed in time domain and frequency domain. The sprung mass, unsprung mass, suspension damping, suspension and tire stiffness are considered as random variables. The mean value, standard deviation and variation coefficient of the vehicle’s natural frequencies and mode shapes are obtained by using the Monte-Carlo simulation method. The computational expressions for the numerical characteristics of the root mean square value of vehicle’s random displacement and acceleration responses in the frequency domain are developed by means of the random variable’s functional moment method and algebra synthesis method. The influences of the uncertainty of the vehicle’s parameters on the vehicle’s random responses are investigated in detail using a practical example, and some useful conclusions are obtained.
Seismic random vibration analysis of shear beams with random structural parameters
Jun Dai,Wei Gao,Nong Zhang,Nengguang Liu 대한기계학회 2010 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.24 No.2
The seismic random vibration responses of shear beam structures with uncertainty are investigated. The structural mass and stiffness are considered as random variables. The excitations adopted are stationary or non-stationary random process ground accelerations in horizontal direction. Using the structural random response in frequency domain, the mean square seismic random displacements of shear beam structures are expressed as the function of random structural parameters. Computational expressions for the mean value and standard deviation of structural seismic random response are then developed by means of the random variable’s functional moment method. The effects of the randomness of structural parameters on the structural random responses are demonstrated by an engineering example.
Ko, Kyung Jun,Cha, Pil Ryung,Park, Jong Tae,Kim, Jae Kwan,Hwang, Nong Moon Trans Tech Publications, Ltd. 2007 Materials science forum Vol.558 No.-
<P>Phase-field model (PFM) in multiple orientation fields was used to simulate the grain growth in three-dimensions (3-D) for isotropic and anisotropic grain boundary energy. In the simulation, the polycrystalline microstructure was described by a set of non-conserved order parameters and each order parameter describes each orientation of grains. For isotropic grain boundary energy, the simulation showed the microstructure evolution of normal grain growth. For anisotropic grain boundary energy, however, the simulation showed that certain grains which share a high fraction of low energy grain boundaries with other grains have a high probability to grow by wetting along triple junctions and can grow abnormally with a growth advantage of solid-state wetting. The PFM simulation shows the realistic microstructural evolution of island and peninsular grains during abnormal grain growth by solid-state wetting.</P>
Upregulation and biological function of transmembrane protein 119 in osteosarcoma
Zhen-Huan Jiang,Jun Peng,Hui-Lin Yang,Xing-Li Fu,Jin-Zhi Wang,Lei Liu,Jian-Nong Jiang,Yong-Fei Tan,Zhi-Jun Ge 생화학분자생물학회 2017 Experimental and molecular medicine Vol.49 No.-
Osteosarcoma is suggested to be caused by genetic and molecular alterations that disrupt osteoblast differentiation. Recent studies have reported that transmembrane protein 119 (TMEM119) contributes to osteoblast differentiation and bone development. However, the level of TMEM119 expression and its roles in osteosarcoma have not yet been elucidated. In the present study, TMEM119 mRNA and protein expression was found to be up-regulated in osteosarcoma compared with normal bone cyst tissues. The level of TMEM119 protein expression was strongly associated with tumor size, clinical stage, distant metastasis and overall survival time. Moreover, gene set enrichment analysis (GSEA) of the Gene Expression Omnibus (GEO) GSE42352 dataset revealed TMEM119 expression in osteosarcoma tissues to be positively correlated with cell cycle, apoptosis, metastasis and TGF-β signaling. We then knocked down TMEM119 expression in U2OS and MG63 cells using small interfering RNA, which revealed that downregulation of TMEM119 could inhibit the proliferation of osteosarcoma cells by inducing cell cycle arrest in G0/G1 phase and apoptosis. We also found that TMEM119 knockdown significantly inhibited cell migration and invasion, and decreased the expression of TGF-β pathway-related factors (BMP2, BMP7 and TGF-β). TGF-β application rescued the inhibitory effects of TMEM119 knockdown on osteosarcoma cell migration and invasion. Further in vitro experiments with a TGF-β inhibitor (SB431542) or BMP inhibitor (dorsomorphin) suggested that TMEM119 significantly promotes cell migration and invasion, partly through TGF-β/BMP signaling. In conclusion, our data support the notion that TMEM119 contributes to the proliferation, migration and invasion of osteosarcoma cells, and functions as an oncogene in osteosarcoma.
Yan Lan,Le-Gen Nong,Chuan-Dong Wei,Wen-Cheng Chen,Jun-Li Wang,Chun-Fang Wang,Guo-Gang Pan,Ye-Sheng Wei 연세대학교의과대학 2015 Yonsei medical journal Vol.56 No.2
Purpose: Although the polymorphisms of erythrocyte complement receptor type 1 (CR1) in patients with malaria have been extensively studied, a question of whether the polymorphisms of CR1 are associated with severe malaria remains controversial. Furthermore, no study has examined the association of CR1 polymorphisms with malaria in Chinese population. Therefore, we investigated the relationship of CR1 gene polymorphism and malaria in Chinese population. Materials and Methods:We analyzed polymorphisms of CR1 gene rs2274567 G/A, rs4844600 G/A, and rs2296160 C/T in 509 patients with malaria and 503 controls, using the Taqmangenotyping assay and PCR-direct sequencing. Results: There were no significantdifferences in the genotype, allele and haplotype frequencies of CR1 gene rs2274567 G/A, rs4844600 G/A, and rs2296160 C/T polymorphisms between patientswith malaria and controls. Furthermore, there was no association of polymorphismsin the CR1 gene with the severity of malaria in Chinese population. Conclusion:These findings suggest that CR1 gene rs2274567 G/A, rs4844600 G/A, and rs2296160 C/T polymorphisms may not be involved in susceptibility to malariain Chinese population.