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| 1 | Optimization of Vehicle Side Curtain Airbag Module Based on Computer Aided Engineering显示文摘Compared with other kinds of airbags,curtain airbag(CAB) has more complex structures and larger coverage area. The product development process depends on many module tests,sled tests and full size vehicle tests. Computer aided engineering(CAE) technology can replace tests to a great extent,also save test costs and product development time. This paper introduces the way of setting up simulation models and application of static deployment tests and free motion headform(FMH) tests to verify simulation models. In the CAB simulation,uniform pressure airbag models and computational fluid dynamics(CFD) models are all used. The uniform pressure airbag models are not able to simulate the pressure difference among different parts inside the cushion during inflating process. CFD-based CAB models are used to help the curtain airbag optimization design. Based on effective CAE simulation,the optimization analyses related to diffuser tube parameters,inflator mass flow rate and cushion folding patterns are discussed and performed in different cases. The optimization result shows that the proposed techniques are helpful to the parametric optimization design of side curtain airbag module in curtain airbag development process. | ZHANG Junyuan LI Dongjun BI Ying YANG Donglin QIU Feng | 2009 | Chinese Journal of Mechanical Engineering2009，22，4： | 6 |
| 2 | Dominance-based rough set approach and knowledge reductions in incomplete ordered information system显示文摘 | Xibei Yang Jingyu Yang Chen Wu Dongjun Yu | 2007 | Information Sciences2007，，4： | 2 |
| 3 | A source term model of perturbation in a numerical study on flows around a slender body of revolution at a high angle of attack显示文摘A numerical study on flows around a slender body of revolution at a high angle of attack is conducted to investigate the influence of strength and circumferential angle of perturbation on flow asymmetry.A source term model is applied to simulate a real geometrical perturbation near the tip of the slender body.It can greatly facilitate the adjustment of perturbation strength.The results show that the bistable phenomenon does not appear any more at a small perturbation strength.For different perturbation strengths,the energy of the asymmetric perturbation flow experiences a similar spatial exponential growth regime with the same growth rate.The appearance of the bistable phenomenon is closely related to nonlinear saturation of the perturbation flow as perturbation strength increases. | Yang Liu,Dongjun Ma,Dejun Sun~*,Xieyuan Yin Department of Modern Mechanics,University of Science and Technology of China,Hefei 230027,China | 2009 | Progress in Natural Science:Materials International2009，19，12： | 2 |
| 4 | PV-based virtual synchronous generator with variable inertia to enhance power system transient stability utilizing the energy storage system显示文摘The Photovoltaic(PV)plants are significantly different from the conventional synchronous generators in terms of physical and electrical characteristics,as it connects to the power grid through the voltage-source converters.High penetration PV in power system will bring several critical challenges to the safe operation of power grid including transient stability.To address this problem,the paper proposes a control strategy to help the PVs work like a synchronous generator with variable inertia by energy storage system(ESS).First,the overall control strategy of the PV-based virtual synchronous generator(PV-VSG)is illustrated.Then the control strategies for the variable inertia of the PV-VSG are designed to attenuate the transient energy of the power system after the fault.Simulation results of a simple power system show that the PV-VSG could utilize the energy preserved in the ESS to balance the transient energy variation of power grid after fault and improve the transient stability of the power system. | Ju Liu Dongjun Yang Wei Yao Rengcun Fang Hongsheng Zhao Bo Wang | 2017 | Protection and Control of Modern Power Systems2017，2，1： | 2 |
| 5 | Dominance-based rough set approach to incomplete interval-valued information system显示文摘 | Xibei Yang Dongjun Yu Jingyu Yang Lihua Wei | | 0，，11： | 1 |
| 6 | Dominance-based rough set approach to incomplete interval- valued information system 显示文摘 | Yang Xibei Yu Dongjun Yang Jingyu | 2009 | Data & Knowledge Enginering2009，68，11： | 1 |
| 7 | Variable stiffness mechanism for human-friendly robots 显示文摘 | Dongjun Hyun Hyun Seok Yang Jungwan Park | 2010 | Mechanism and Machine Theory2010，45，6： | 1 |
| 8 | Preparation and characterization of 6-carboxychitosan显示文摘 | Zhou Yongguo Yang Yuedong Wang Dongjun | 2003 | Chemistry Letters2003，32，8： | 1 |
| 9 | Evaluation and structural analysis of the functions of the Tibetan Plateau National Park Cluster显示文摘National parks are useful entities for looking at coordinated efforts to improve the Tibetan Plateau’s function as an ecological safety barrier and the region’s green development.Research on the characteristics of the function structures of the Tibetan Plateau’s national parks is vital to promoting their systematic and coordinated development.This paper combines the pressure-state-response model,the rank-size rule and a coupling and coordination model to identify and evaluate the functions of national parks on the Tibetan Plateau and to analyze the categories,hierarchy and structures behind those functions.The results indicate the following:(1)The Tibetan Plateau National Park Cluster needs to maintain internal and external relations.Internally it needs to rationally allocate resources between ecological protection,recreation and community development,and externally it needs to promote its role as an ecological security barrier and promote regional green development by rationally ranking and organizing the individual national parks,so as to handle their co-evolution of functions at multiple scales.(2)Ecological protection,recreation and community development are the most prominent functions of the Tibetan Plateau National Park Cluster,but there is scope to develop their scientific research and education functions.The Zipf index shows that their multi-functional level conforms with the rank-size rule,indicating balanced development.Individual national parks need to strengthen their optimal functions according to their characteristic localization.(3)The degree of coupling between the functions of the Tibetan Plateau National Park Cluster is 0.7809,and the degree of coordination is 0.6227,which indicates a very strong coupling and moderate coordination.The coupling strength and degree of coordination between the multiple functions vary greatly among the individual national parks,which reflects their different function structures.There are four function structure types:fully coordinated,optimally developed,moderately developed and moderately underdeveloped.This study contributes to research on evaluating the functions of national park clusters and analyzing their structures,and it serves as a reference on optimizing and sustainably developing the Tibetan Plateau National Park Cluster. | CHEN Dongjun ZHONG Linsheng FAN Jie YU Hu YANG Ding ZENG Yuxi | 2022 | Journal of Geographical Sciences2022，32，5： | 1 |
| 10 | Dominance-based Rough Set Approach to Incomplete Interval-valued Information System显示文摘 | Yang Xibei Yu Dongjun | 2009 | Data & Knowledge Engineering2009，68，11： | 1 |
| 11 | Dominance-based rough set approach to incomplete interval- valued information system 显示文摘 | Yang Xibei Yu Dongjun Yang Jingyu | 2009 | Data & Knowledge Engineering2009，68，11： | 1 |
| 12 | Dominance-based rough set approach to incomplete interval-valued information system显示文摘 | Xibei Yang Dongjun Yu Jingyu Yang Lihua Wei | 2009 | Data & Knowledge Engineering2009，，11： | 1 |
| 13 | Combination of interval-valued fuzzy set and soft set显示文摘 | Xibei Yang Tsau Young Lin Jingyu Yang Yan Li Dongjun Yu | 2009 | Computers and Mathematics with Applications2009，，3： | 1 |
| 14 | Systematic study of spatiotemporal influences on temporal contrast in the focal region in large-aperture broadband ultrashort petawatt lasers显示文摘Temporal contrast is one of the crucial physical determinants which guarantee the successful performance of laser–matter interaction experiments. We generally reviewed the influences on the temporal contrast in three categories of noises based on the requirement by the physical mechanisms. The spatiotemporal influences on temporal contrast at the focal region of the chromatic aberration and propagation time difference introduced by large-aperture broadband spatial filters, which were spatiotemporally coupled with compression and focusing, were calculated and discussed with a practical case in SG-Ⅱ5 PW ultrashort petawatt laser. The system-wide spatiotemporal coupling existing in large-aperture broadband ultrashort petawatt lasers was proved to be one of the possible causes of temporal contrast degradation in the focal region. | Ping Zhu Xinglong Xie Jun Kang Qingwei Yang Haidong Zhu Ailin Guo Meizhi Sun Qi Gao Ziruo Cui Xiao Liang Shunhua Yang Dongjun Zhang Jianqiang Zhu | 2018 | High Power Laser Science and Engineering2018，6，1： | 1 |
| 15 | Dominance-based rough set approach to incomplete interval-valued information system显示文摘 | Yang Xibei Yu Dongjun Yang Jingyu | 2009 | Data & Knowledge Engineering2009，68，11： | 1 |
| 16 | Generalization of soft set theory:from crisp to fuzzy case显示文摘 | Yang Xibei Yu Dongjun Yang Jingyu | 2007 | Fuzzy Information and Engineering2007，40，： | 1 |
| 17 | Catalytic purification of acrylonitrile-containing exhaust gases from petrochemical industry by metal-doped mesoporous zeolites显示文摘 | Runduo Zhang Dongjun Shi Ning Liu Biaohua Chen Lianghua Wu Libin Wu Weimin Yang | 2015 | Catalysis Today2015，，： | 1 |
| 18 | Dominance-based rough set approach to incomplete interval-valued information system显示文摘 | Yang Xibei Yu Dongjun | 2009 | Data & Knowledge Engineering2009，68，： | 1 |
| 19 | Difference relation-based rough set and negative rules in incomplete information system显示文摘 | Yang Xibei Yu Dongjun Yang Jingyu | 2009 | International Journal of Uncertainty Fuzziness and Knowledge-Based Systems2009，17，5： | 1 |
| 20 | Attenuation mechanism of Brucella melitensis M5-10,implications for vaccine development and differential diagnosis显示文摘Brucellosis is a worldwide zoonosis.Vaccination is the most efficient means to prevent and control brucellosis.The current licensed attenuated vaccines for animal use were developed by sequential passage in nonnatural hosts that decreased virulence in its original hosts.The attenuation mechanism of these strains remains largely unknown.In the present study,we sequenced the genome of Brucella melitensis vaccine strain M5-10.Sequence analysis showed that a large number of genetic changes occurred in the vaccine strains.A total of 2854 genetic polymorphic sites,including 2548 SNP,241 INDEL and 65 MNV were identified.Of the 2074 SNPs in coding regions,1310(63.2%)were non-synonymous SNPs.Gene number,percent and N/S ratios were disproportionally distributed among the cog categories.Genetic polymorphic sites were identified in genes of the virB operon,flagella synthesis,and virulence regulating systems.These data indicate that changes in some cog categories and virulence genes might result in the attenuation.These attenuation mechanisms also have implications for screening and development of new vaccine strains.The genetic changes in the genome represent candidate sites for differential diagnosis between these vaccine strains and other virulence ones.Transcription analysis of virulence genes showed that expression of dnaK,vjbR were reduced in M5-10 strain when compared with that in 16M.A duplex PCR targeting virB6 and dnaK was successfully used to differentiate between M5-10 and the virulent 16M strain.The genome re-sequencing technique represents a strong strategy not only for evaluation of vaccines,but also for development of new vaccines. | Yuanqiang ZHENG Yanchun SHI Chang AN Ruisheng LI Dongjun LIU Yuehua KE Kairong MAO Mingjuan YANG Zeliang CHEN Shorgan BOU | 2014 | Frontiers of Agricultural Science and Engineering2014，1，4： | 0 |
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