维普中文期刊产品整合服务
17篇 您的检索式:作者名="ChaoJ"
    题名 作者 年代 出处 被引量
1高校体育教学实行竞争挂牌制的思考──体育教师下岗人员去向的分析显示文摘本文通过对高校体育教学实行竞争挂牌制的思考与研究,重点分析了下岗教师 的去向问题,通过对专家调查访问等,提出了下岗教师再培训的必要性、培训形式、时间 等的可行性方案。王朝军 Chaoj,W 1999体育与科学1999,20,6:3
2Adaptive link layer security architecture for telecommand communications in space networks显示文摘Impressive advances in space technology are enabling complex missions, with potentially significant and long term impacts on human life and activities. In the vision of future space exploration, communication links among planets, satellites,spacecrafts and crewed vehicles will be designed according to a new paradigm, known as the disruption tolerant networking. In this scenario, space channel peculiarities impose a massive reengineering of many of the protocols usually adopted in terrestrial networks; among them, security solutions are to be deeply reviewed, and tailored to the specific space requirements. Security is to be provided not only to the payload data exchanged on the network, but also to the telecommands sent to a spacecraft,along possibly differentiated paths. Starting from the secure space telecommand design developed by the Consultative Committee for Space Data Systems as a response to agency-based requirements, an adaptive link layer security architecture is proposed to address some of the challenges for future space networks. Based on the analysis of the communication environment and the error diffusion properties of the authentication algorithms, a suitable mechanism is proposed to classify frame retransmission requests on the basis of the originating event(error or security attack) and reduce the impact of security operations. An adaptive algorithm to optimize the space control protocol, based on estimates of the time varying space channel, is also presented. The simulation results clearly demonstrate that the proposed architecture is feasible and efficient, especially when facing malicious attacks against frame transmission.Lei Zhang Chengjin An Susanna Spinsante Chaojing Tang 2014Journal of Systems Engineering and Electronics2014,25,3:3
3Facial expression recognition based on fusion of extended LDP and Gabor features显示文摘The local directional pattern(LDP) is unsusceptible to random noise which is widely used in texture extraction of face region. LDP cannot encode the central pixel thus the important information will be lost. Thus a new feature descriptor called extended local directional pattern(ELDP) is proposed for face extraction. First,the mean value of the eight directional edge response values and the gray value of center pixel are calculated. Second,the mean value is taken as the threshold. Then,the expression image is encoded using nine encoded values. In order to reduce redundant information and get more effective information,the Gabor filter is used to obtain the multidirection Gabor magnitude maps(GMMs),and then the ELDP is used to encode the GMMs. Finally,support vector machine(SVM) is applied to classify and recognize facial expression. The experimental results show that the feature dimensions is greatly reduced and the rate of facial expression recognition is improved.Luo Yuan Yu Chaojing Zhang Yi Wang Boyu 2018The Journal of China Universities of Posts and Telecommunications2018,25,1:2
4Survivin and p53 modulate quercetin-induecd cell growth inhibition and apoptosis in human lung carcinoma eclls显示文摘Kuo F C Liu H F ChaoJ I 2004J Biol Chem2004,279,55:1
5A real-time inversion attack on the GMR-2 cipher used in the satellite phones显示文摘The GMR-2 cipher is a type of stream cipher currently being used in some inmarsat satellite phones. It has been proven that such a cipher can be cracked using only one single-frame(15 bytes) known keystream but with moderate executing time. In this paper, we present a new thorough security analysis of the GMR-2 cipher. We first study the inverse properties of the cipher's components to reveal a bad one-way character of the cipher. By then introducing a new concept called 'valid key chain' according to the cipher's key schedule, we propose an unprecedented real-time inversion attack using a single-frame keystream. This attack comprises three phases:(1) table generation;(2) dynamic table look-up, filtration and combination;and(3) verification. Our analysis shows that, using the proposed attack, the size of the exhaustive search space for the 64-bit encryption key can be reduced to approximately 2^(13) when a single-frame keystream is available. Compared with previous known attacks, this inversion attack is much more efficient. Finally, the proposed attack is carried out on a 3.3-GHz PC, and the experimental results thus obtained demonstrate that the 64-bit encryption-key could be recovered in approximately 0.02 s on average.Jiao HU Ruilin LI Chaojing TANG 2018Science China(Information Sciences)2018,61,3:1
6The mechanism discussion on the pinellia protein function to mouse's anti-pregnant early and anti-birth 显示文摘XIA LINNA LI CHAOJING 1985The first journal of Shanghai medical school1985,12,3:1
7Another improvement of LMAP++:a RFID authentication protocol显示文摘Huang Anqi Zhang Chen Tang Chaojing 2014Communications in Computer and Information Science2014,,426:1
8The role of the surface roughness on the integrity of thermally generated oxide scales: application to the Al203/MA956 system显示文摘CHAOJ GONZALEZ-CARRASCOJ L 1997Mat Sci Eng (A)1997,230,:1
9Coastal geomorphic evolution at the Denglou Cape, the Leizhou Peninsula显示文摘Wang Lirong(王丽荣) Zhao Huanting(赵焕庭) Song Chaojing(宋朝景) Yuan Jiayi(袁家义) Yu Hongbing(于红兵) 2002Acta Oceanologica Sinica2002,21,4:1
10Customized and in situ fenestrated stent-grafts:A reinforced poly-ε-caprolactone branch cuff designed to prevent type III endoleaks and enhance hemodynamics显示文摘Superior long-term anchorage of the bridging stent-grafts from the fenestrated main body endograft could be achieved with the addition of a flared cuff,capable of preventing the previously observed fabric fraying around the fenestration as a result of the balloon angioplasty of the seal zone.This novel stent cuff design will also facilitate more complete biointegration of the devices,eliminate the hemodynamic variation as well as significantly reduce the possibility of a Type III endoleak.The feasibility of this concept is demonstrated by observations made from in-situ tests performed in a Beta endograft design.Flared cuffs made of poly(ε-caprolactone)supported with a weft-knitted polyester structure can be manufactured with various configurations to optimize the transition from the main body of the endograft,thus preventing the currently marketed designs’hemodynamic perturbation while also promoting endograft biointegration.This concept represents an evolution in branch graft design,which may enhance the long-term durability of customized fenestrations and open new applications for in-vivo graft fenestration in the near future.Further ongoing investigation to optimize its structure,X-ray opacity,fixation to the flared stent,and material biocompatibility are still required to build upon this concept’s proof.Fujun Wang Chaojing Li Robert Guidoin Abedalwafa Mohammed Graeham Douglas Fan Zhao Guy Dionne Ze Zhang Haripriya Ramesh Lu Wang Mark Nutley 2021Medicine in Novel Technology and Devices2021,,1:1
11Flared textile cuff to be apposed on the proximal sealing zone in fenestrated stent-grafts 显示文摘WANG Fujun LI Chaojing WANG Lu 2014Textile Research Journal2014,84,3:1
12High efficient ultraviolet photocatalytic activity of BiFeO3 nanoparticles synthesized by a chemical coprecipitation process显示文摘Zhike Liu Yajun Qi Chaojing Lu 2010Mater Electron2010,,21:1
13Differential role of kinin B1 and B2 receptors in ischemia-induced apoptosis and ventricular remodeling显示文摘Yin H ChaoJ BaderM etal 2007Peptides2007,28,7:1
14Adrenomedullin gene delivery inhibits neointima formation in rta artery after balloon angioplasty显示文摘AgataJ ZhangJJ ChaoJ 2003Regul Pept2003,112,13:1
15Stable partial nitritation of mature landfill leachate in a continuous flow bioreactor:Long-term performance,microbial community evolution,and mechanisms显示文摘A continuous flow bioreactor was operated for 300 days to investigate partial nitritation(PN)of mature landfill leachate,establishing the long-term performance of the system in terms of the microbial community composition,evolution,and interactions.The stable operation phase(31-300 d)began after a 30 days of start-up period,reaching an average nitrite accumulation ratio(NAR)of 94.43%and a ratio of nitrite nitrogen to ammonia nitrogen(NO_(2)^(−)-N/NH_(4)^(+)-N)of 1.16.Some fulvic-like and humic-like compounds and proteins were effectively degraded in anaerobic and anoxic tanks,which was consistent with the corresponding abundance of methanogens and syntrophic bacteria in the anaerobic tank,and organic matter degrading bacteria in the anoxic tank.The ammonia-oxidizing bacteria(AOB)Nitrosomonas was found to be the key functional bacteria,exhibiting an increase in abundance from 0.27%to 6.38%,due to its collaborative interactions with organic matter degrading bacteria.In-situ inhibition of nitrite-oxidizing bacteria(NOB)was achieved using a combination of free ammonia(FA)and free nitrous acid(FNA),low dissolved oxygen(DO)with fewer bioavailable organics conditions were employed to maintain stable PN and a specific ratio of NO_(2)^(−)-N/NH_(4)^(+)-N,without an adverse impact on AOB.The synergistic relationships between AOB and both denitrifying bacteria and organic matter degrading bacteria,were found to contribute to the enhanced PN performance and microbial community structure stability.These findings provide a theoretical guidance for the effective application of PN-Anammox for mature landfill leachate treatment.Xiaoling Hu Jianyang Song Yantong Ji Chaojing Li Jia Wei Wanlin Lyu Bin Wang Wenbin Guo Rongfan Chen Hongyu Wang Dao Zhou Qian Zhang 2023Chinese Chemical Letters2023,34,11:0
16Pusher:an augmented fuzzer based on the connection between input and comparison operand显示文摘Coverage based fuzzing is a widespread vulnerability detection technique,and it has exposed many bugs in many real-world programs.However,its attention is to eliminate the testing on the repeated paths,yet it still employs random mutation to generate inputs,which is blind to penetrate complex comparisons in the program.As a result,the testing coverage is limited.Despite some solution proposals are presented,this problem is still partially solved.This paper argues that random mutation is mainly limited by two challenges,the sizable search space and the lack of a useful feedback to direct the search.Then we present an augmented fuzzing technique by addressing these two challenges.First of all,we point out a black relationship between input contents and comparison operands,which is dubbed connection.Second,we present a novel method to collect the comparison operands during execution,which is leveraged to infer the connections.Based on the connections,the fuzzer can learn about which input byte affects on which comparison instruction to establish a smaller search space.Third,the connection provides a useful feedback to direct the search.We resort to a modern metaheuristic algorithm to satisfy this searching requirement.We developed a prototype Pusher and evaluated its performance on several benchmarks and four real-world programs.The experimental results demonstrate that Pusher works better than some other state-of-the-art fuzzers on bug detection,and can achieve a higher testing coverage.Moreover,we take a detailed statistic about the execution overhead in Pusher,and the results indicate that the execution overhead introduced by our approach is within an acceptable scope.Bin Zhang Jiaxi Ye Ruilin Li Chao Feng Yunfei Su Chaojing Tang 2022Frontiers of Computer Science2022,16,4:0
17Constructing Nanoscale Topology on the Surface of Microfibers Inhibits Fibroblast Fibrosis显示文摘Fibrosis is a common problem in soft tissue regeneration,often caused by the differentiation of fibroblasts into myofibro-blasts.Because of the nanoscale topology that regulates the mechanical transduction of cells,nanofibers or nanoparticles are commonly used to modulate fibroblast differentiation.However,the strength of nanofibers is insufficient,and the physi-ological toxicity of nanoparticles still remains to be verified.In this study,self-induced crystallization was used to construct nano-protrusions on the random and aligned polycaprolactone microfibers to regulate the behavior of fibroblasts.The results revealed that the mechanical properties of microfibers with a nanoscale topology were improved.Immunofluorescence staining manifested that nano-protrusions impeded the activation of integrins and vinculins,thereby inhibiting the nuclear transfer of Yes-associated protein,resulting in a decrease in the expression ofα-smooth muscle actin.Nanoscale topology of microfibers hampered the activation of the Rho/ROCK signalling pathway.In general,we used a simple process to con-struct a fibrous scaffold with a micro-nano multilevel structure.This structure can hinder the transformation of fibroblasts into myofibroblasts on both random and aligned fibers,which is expected to prevent fibrosis.Yongjie Jiao Xiaojing Li Jinjie Chen Chaojing Li Laijun Liu Xingxing Liu Fujun Wang Guang Chen Lu Wang 2022Advanced Fiber Materials2022,4,5:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费