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  • EDP Sciences  (8)
  • Yan, F.  (8)
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  • EDP Sciences  (8)
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  • 1
    Online Resource
    Online Resource
    Study on cybersecurity attack-defense visualization method based on intelligent connected vehicle
    EDP Sciences ; 2021
    In:  E3S Web of Conferences Vol. 268 ( 2021), p. 01010-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 268 ( 2021), p. 01010-
    Abstract: Attack test and defense verification are important ways to effectively evaluate the cybersecurity performance of Intelligent Connected Vehicle (ICV). This paper investigates the problem of attack-defense visualization in ICV cybersecurity. For the purpose of promoting cybersecurity research capabilities, a novel Cybersecurity Attack-Defense Visualization method based on Intelligent Connected Vehicle (CADV-ICV) is proposed. In this scheme, an Attack-Defense Game model (ADG) is designed so that the logical relationship between the attack and defense can be studied through a system architecture. Then, the CADV-ICV method is implemented through three layers that are hardware layer, software layer and visualization layer. Finally, through an Intelligent Connected Vehicle, two TV monitors, a computer and a server, a real experimental environment is built to test the CADV-ICV method. The experimental results show that CADV-ICV can realize the visual display of attack-defense process, attack messages, defense state, real-time message monitoring, and attack-defense principle for 10 car’s components.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202126801010
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 2755680-3
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  • 2
    Online Resource
    Online Resource
    Effect of aging process on combustion and mechanical performance of nitroguanidine propellants
    EDP Sciences ; 2021
    In:  E3S Web of Conferences Vol. 268 ( 2021), p. 01066-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 268 ( 2021), p. 01066-
    Abstract: The effect of different aging times (1 day, 3 days, 5 days and 7 days) on the combustion performance and mechanical properties of nitroguanidine propellants was studied.Through the mechanical properties test of impact and compression and closed bomb test of the prepared propellants, it was found that the relative steepness of the propellants aged for 3 days under normal and low temperature conditions was all less than 1;Under normal and low temperature conditions, the impact strength of propellants aged for 5 days was the largest;Propellants aged for 7 days had the highest compressive strength at low temperatures and propellants aged for 1 day had the highest compression rate at low temperatures.Comprehensive research results show that aging time of three days has a better improvement in the combustion performance and mechanical properties of the propellants.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202126801066
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Experimental study on particulate control of turbo gasoline engine
    EDP Sciences ; 2021
    In:  E3S Web of Conferences Vol. 268 ( 2021), p. 01014-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 268 ( 2021), p. 01014-
    Abstract: This study takes light-passenger vehicles with 1.5L port fuel injection turbocharged engine as the research object, based on the WLTC test cycle about the China 6b emissions regulations, including some influence of several key technologies, such as fuel injector selection, intake VVT opening, fuel control and gear shift point matching, what can affect the particulate emissions from light-passenger vehicles. The results show that without particulate filter (GPF) technology, Using the original 4-hole fuel injector, the opened intake air VVT in catalyst light off, the optimized fuel control and gearbox shift point, the emission test results of the light-passenger vehicle can reach the development target of China 6b, what can avoid GPF blockage and regeneration problems in the market. Meanwhile, the cost of mass production and development cycle about vehicle is effectively reduced.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202126801014
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Fibrous nano composite reinforced surface on WC-Co cemented carbide achieved by pulsed electron beam irradiation and subsequent tempering
    EDP Sciences ; 2021
    In:  E3S Web of Conferences Vol. 268 ( 2021), p. 01078-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 268 ( 2021), p. 01078-
    Abstract: Exotic microstructures can be tailored by extreme conditions with combined material processing techniques for desirable properties. In this work, an innovative 2-staged process was explored for WC-10Co cemented carbide surface modification. Firstly, rapid thermal cycles were induced by high current pulsed electron beam (HCPEB) irradiation at energy density of 6 J/cm 2 , during which the micro-WC/Co was melted and re-solidified into a nano-scaled equiaxed grain microstructure with metastable fcc-WC 1-x as the majority phase in the surface layer (~2 μm). Thereafter, a subsequent tempering process was applied to the HCPEB-irradiated cemented carbide specimens and the nano equiaxed grains in the surface layer were gradually transferred into nano-scaled fibrous microstructure. Phase transformation was investigated using thermo-gravimetric analysis differential scanning calorimetry (TGA-DSC), confocal laser scanning microscopy (CLSM), scanning electron microscopy (SEM) and X-ray diffractometry (XRD). Analysis showed that the fibrous nano structure resulted from the decomposition of WC 1-x at 600-700 ºC via fcc-WC 1-x → hex-WC + hcp-W 2 C. After the 2-staged process, the surface microhardness was greatly improved.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202126801078
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 5
    Online Resource
    Online Resource
    Accessibility analysis of battery electric vehicles: A case study of Beijing Tianjin Hebei
    EDP Sciences ; 2022
    In:  E3S Web of Conferences Vol. 360 ( 2022), p. 01029-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 360 ( 2022), p. 01029-
    Abstract: By considering the symbiosis between rest behavior with charging behavior during intercity traveling, the inconvenience of battery electric vehicles (BEVs) confined by the battery capacity can be relieved. This paper proposed a quantitative analysis method for revealing this phenomenon from an accessibility perspective. This proposed method involved a calculation model of intercity travel time for electric vehicle by considering the current configuration of electric vehicle charging facilities and energy consumption with travel speed. Based on the highway network and charging pile network in Beijing-Tianjin-Hebei region, a case study has been analyzed to verify the feasibility of the model. The results show that the accessibility performance of BEVs and fuel vehicles is close in Beijing Tianjin Hebei region, which has relatively perfect charging facilities. And by joint the charging behavior and rest behavior, there is almost no difference between BEV models with a large range and advanced charging technology and fuel vehicles in intercity travel. In addition, the charging facilities along the expressway in the region can basically satisfy the experience of intercity travel for BEVs, and further increasing the number of charging stations cannot significantly improve the accessibility of electric vehicles.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202236001029
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 6
    Online Resource
    Online Resource
    Prediction and optimization of tourists’ spatial-temporal behavior during peak period in scenic spots: a simulation-based analysis
    EDP Sciences ; 2022
    In:  E3S Web of Conferences Vol. 360 ( 2022), p. 01086-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 360 ( 2022), p. 01086-
    Abstract: Tourists’ spatial-temporal behavior has complex and dynamic randomness, which affects the intelligent management of scenic spots. Understanding and mastering the spatial-temporal behavior of tourists within the peak period of scenic spots is one of the key means to improving the competitiveness of scenic spots and enhancing tourism satisfaction. This paper explores how to effectively optimize the tourists’ spatial-temporal behavior and improve the overall efficiency of scenic spots. Firstly, we built a simulation model and found the transfer change law between attractions through historical data. Then, we predicted the spatial-temporal distribution of the number of tourists to their subsequent attractions and selected the minimum load attraction as the next destination for tourists. Finally, the simulation experiment proves that the dynamic selection optimization based on individual tourist behavior can balance the scenic spot load and alleviate the congestion level.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202236001086
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 7
    Online Resource
    Online Resource
    Open-source project recommendation model
    EDP Sciences ; 2021
    In:  E3S Web of Conferences Vol. 268 ( 2021), p. 01061-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 268 ( 2021), p. 01061-
    Abstract: Open-source has become a very important topic in this era. the number of open-source projects on github Shows a huge growth trend. Facing so many open-source projects, it’s not easy to find the projects and topics that the developers interested in. so, it is necessary to model the user's behavior data,So as to automatically recommend projects to developers. to explore this problem, we constructed a dataset of 90w users and 461w projects based on github log and did a lot of cleaning work on the data. finally, we model the data through the improvement of the Light-GCN model to recommend relevant open-source projects to users. The experimental results show that the accuracy of our model is more than 15%.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202126801061
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2021
    detail.hit.zdb_id: 2755680-3
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    Online Resource
  • 8
    Online Resource
    Online Resource
    Experimental study on working capacity of carbon canister based on Euro VI
    EDP Sciences ; 2022
    In:  E3S Web of Conferences Vol. 360 ( 2022), p. 01022-
    Details
    In: E3S Web of Conferences, EDP Sciences, Vol. 360 ( 2022), p. 01022-
    Abstract: In order to study the gasoline working capacity and durability of the carbon canister, the gasoline working capacity test of the carbon canister was conducted under different test conditions. The results showed that the gasoline working capacity of the canister carbon decreased with the increase of fuel vapor loading rate. The fuel vapor volume ratio of the inlet has little effect on the gasoline working capacity. After 300 gasoline working capacity test cycles, the working capacity of butane decreased by about 20%. The fuel vapor adsorption amount in first cycle of each carbon canister is far greater than the desorption amount in first cycle, and also far greater than the adsorption and desorption amount in the subsequent cycles, which indicated that a large amount of fuel vapor occupied the active sites after the first use of the carbon canister and cannot desorb.
    Type of Medium: Online Resource
    ISSN: 2267-1242
    URL: Article
    DOI: 10.1051/e3sconf/202236001022
    Language: English
    Publisher: EDP Sciences
    Publication Date: 2022
    detail.hit.zdb_id: 2755680-3
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