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    Research on Scenarios and Modeling of Co-Frequency Interference Between NGSO Communication Constellation Systems by Wei LI, Kang YAN, Jingru GENG, Wen WANG

    Published 2021-03-01
    “…Aiming at the serious problem of frequency overlapping among non-geostationary satellite orbit (NGSO) communication constellation systems.The potential interference scenarios under multiple NGSO communication constellation systems sharing the same spectrum band was comprehensively analyzed, with the aid of analyzing frequency plan of typical constellation systems.Then the possibility of interference risk in each scenario was qualitatively evaluated.According to the characteristics of interference scenarios, the key parameters and models for the co-frequency interference analysis between the NGSO communication constellation systems were discussed, and the computing models of co-frequency interference based on three diff erent protect criterion were presented.Finally, challenges and key research directions of co-frequency interference analysis between NGSO communication constellation systems were pointed out.The research can provide a reference for the study of compatibility and coexistence between broadband Internet constellation systems.…”
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    Modeling Research and Test Verification of the Seismic Response of a Multistage Series Liquid Tank by Xiaoguang Yao, Lijun Meng, Peng Chu, Liang Yao

    Published 2021-01-01
    “…The structural flexibility of the tank and the liquid-structure coupling characteristics between the liquid and tank wall were considered in the research. A multimass-block and spring model was employed to be equivalent to the longitudinal vibration of the liquid in the storage tank. …”
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    Historical Chinese Microdata. 40 Years of Dataset Construction by the Lee-Campbell Research Group by Cameron Campbell, James Lee

    Published 2020-09-01
    “…We then summarize the most important results from our research on demographic behaviour, family, and household organization, and more recently inequality and stratification. …”
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    Research and deployment on the innovation solution for 4G voice of high-speed railway scenario by DePing XU, XiangChen MA, RiTao CHENG, LuJing GENG

    Published 2015-12-01
    “…High-speed railway is a special scenario of 4G network coverage,the project planning and construction of high-speed railway 4G network coverage have special difficulty,wireless coverage is different.High-speed railway scenario 4G voice solution needs to use different voice deployment strategy according to the quality of wireless coverage.The current situation of high-speed 4G network planning index and the ability to support voice services were analyzed,the alternative voice program under the high-speed railway 4G coverage was researched.Considering enhancing the user experience and feasibility,the feasible high-speed railway scene 4G voice service deployment recommendations was put forward.…”
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    Research of Dimension Chain Optimum Design Method of Gearbox based on Statistical Process Control by Huo Chunjing, Shan Hongbo, Zhao Yimin, Gao Lili, Zhang Bin, Liu Chunwang, Ge Kai

    Published 2018-01-01
    “…Based on the theory of dimension chain,the dimension chain compute with extremum method and probability method is researched. It defines that compute method determined by the number of composition loops,the real statistical data and the statistical process control ability can be used to optimize the dimension chain. …”
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    Research Trends in Project-Based Learning in Elementary Schools (2001-2024): Bibliometric Analysis by Purwandari Purwandari, Farida Huriawati, Viola Dea Amanda Sarry, Ita Susanti

    Published 2024-12-01
    “…This research underscores the pivotal role of PjBL in enhancing students' 21st-century skills, particularly through technology integration and fostering collaboration among researchers. …”
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