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- 저자 : Yuting Dai (검색결과 3 건)
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Ma Yuting(Yuting Ma),Dai Yuanyuan(Yuanyuan Dai) 아시아사회과학학회 2023 International Science Research Vol.3 No.1
The US government and political elites have long regarded Iran as a threat to US interests, Middle East peace and Israel’s national security. However, the Iranian government has never actively launched any war since its establishment in 1979. In order to explain the “Iran Threat” discourse constructed by the US political elite, the process of discourse formation and proliferation, this article combines security and threat framing theories, and specifically interprets the corresponding materials and documents through the path of description- interpretation- explanation. It points out that the discourse of the American political elites against Iran is not based on facts, rather, the topics are full of ideological attacks and highly subjective extreme judgments. Take Bush as an example, he portrayed Iran as a supporter of terrorism after the 9/11 incident; on this basis, the intelligence and policy consultant agencies of the US government provide corresponding intelligence materials to support the Iranian threat theory. Through the construction of the Iranian threat discourse by political elites, the U.S. political circle has completed the first round of securitization of Iran, and the political topics related to Iran are almost restricted to the discourse system of threat theory, forming a kind of “threat framing” effect. The entire set of political discourses used by the United States against Iran can promote the implementation of policies of the US., and facilitating its policies against Iran to obtain a legal basis, continuing to isolate Iran in the Middle East and eventually overthrow its current government; at the same time, maintain strong US intervention in the Middle East, making Saudi and other countries dependent on the US due to security needs and maintaining US interests in the Middle East.
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Tao Zhang,Xinbin Nie,Xuejie Yue,Dongya Yang,Yuting Dai,Fengxian Qiu 한국섬유공학회 2018 Fibers and polymers Vol.19 No.3
Hierarchically structured BiOCl/LDHs composites with well-developed porosity and high surface area have been prepared by an in situ growth of BiOCl on the surfaces LDHs fibers, and their adsorption capacities and photocatalytic activities are investigated by using methylene blue (MB) as model pollutants. The results indicate that the BiOCl/LDHs composites possess high surface area up to 126.2 m2/g. The as-prepared BiOCl/LDHs composites exhibited higher adsorptive ability and improved photocatalytic activity compared to bare BiOCl particles and LDHs fibers based on the removal of MB in aqueous solution, showing that BiOCl/LDHs composites can be used as efficient environmentally friendly materials for dye wastewater treatment.
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An Improved Weight Optimization AAIM Method Aided by Barometric Altimeter
Xiaowei Xu,Jizhou Lai,Min Liu,Zhiming Zheng,Yuting Dai,Kai Huang 한국항공우주학회 2021 International Journal of Aeronautical and Space Sc Vol.22 No.3
Aiming at the problem of insufficient availability in the satellite receiver autonomous integrity monitoring (RAIM) method, an improved aircraft autonomous integrity monitoring (AAIM) method aided by barometric altimeter based on weight optimization is proposed under the actual configuration of the airborne navigation system. The information of satellite navigation system and barometric altimeter is used to establish the observation equation of the integrated system. The algorithm for integrity monitoring and protection-level calculation is derived based on multiple solution separation, and a weight optimization is adopted to achieve a trade-off between position accuracy and integrity, which can improve the availability of AAIM method. The simulation experiment shows that when the number of visible stars is 5, the traditional method cannot effectively detect the satellite fault, and the positioning error is 43.65 m. The improved algorithm can effectively isolate the fault and reduce the positioning error to 0.37 m. Compared with the traditional RAIM algorithm and the Baro-aided AAIM algorithm, the proposed algorithm has a lower vertical protection threshold. Therefore, the algorithm in this paper improves the performance of satellite navigation system integrity monitoring and ensure the accuracy and reliability of the satellite navigation system.
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