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  6. 11246

    Design of Ultrasonic Methane Concentration Detection System by HOU Guangping, DING Xibo, WANG Ruyue, HE Xin

    Published 2020-02-01
    “…For the problem of ultrasonic methane gas detection accuracy, a research on ultrasonic methane concentration detection system is proposed, established a mathematical model of sound velocity and gas concentration Based on the ultrasonic direct measurement time difference method, the ultrahigh precision time digital conversion chip TDCGP21 is used to complete the precise measurement of time The design of ultrasonic methane concentration system was completed, and the main influencing factors of measurement accuracy were analyzed Time measurement and solution were proposed The system was tested and verified by methane gas The experimental results show that the relative error of the detection method is less than 2% It has the advantages of high precision, convenient measurement and low cost, and has a good application prospect…”
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  7. 11247
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  10. 11250

    Consumer Happiness in the Purchase of Electric Vehicles: a Fuzzy Logic Model by Fernando Lámbarry-Vilchis, Aboud Barsekh Onji, Leticia Refugio Chavarría López, Paola Judith Maldonado Colín

    Published 2025-01-01
    “…The FIS tree model demonstrated superior efficacy in predicting the consumer satisfaction index, achieving an average forecast error of 0.65%. This approach could assist automobile agency marketers in creating accurate predictions to evaluate the purchasing decision-making process.…”
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  11. 11251
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    Repetitive Control Compensation Joint Control for Hydraulic Quadruped Robot by SHAO Jun-peng, XU Yan-shuai, SUN Gui-tao, LIU Meng-meng

    Published 2019-02-01
    “…The effectiveness of the controller is verified by the experimental results of the electro.hydraulic servo.test bench. The research shows that the repetitive controller can effectively use the electro.hydraulic servo actuator for repeated operation information, after a certain error correction, amplitude complete tracking, phase lag is reduced, to verify the effectiveness of the repetitive control compensation PID.…”
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  13. 11253

    PERFORMANCE COMPARISON OF SARIMA INTERVENTION AND PROPHET MODELS FOR FORECASTING THE NUMBER OF AIRLINE PASSENGER AT SOEKARNO-HATTA INTERNATIONAL AIRPORT by Vivin Nur Aziza, Fatma Hilali Moh'd, Firda Aulia Maghfiroh, Khairil Anwar Notodiputro, Yenni Angraini

    Published 2023-12-01
    “…In this study we discuss performance comparison of two models namely SARIMA intervention and Prophet in forecasting the number of domestic passengers at Soetta Airport. The research results showed that the best SARIMA intervention model was SARIMA (0,1,1)(1,0,0)12 b = 0, s = 20, r = 0, with a Mean Absolute Percentage Error (MAPE) of 28% and Root Mean Square Error (RMSE) of 433473. …”
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  14. 11254
  15. 11255

    Housing Price Forecasting Using AI (LSTM) by Hossein Ziyadi, Erfan Salavati, Mohammad Mahdi Lotfi Heravi

    Published 2023-12-01
    “…ObjectiveForecasting the asset prices in any market is an inseparable and critical part of research on markets. Obtaining a credible prediction of an asset's potential future price provides valuable information for investors. …”
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  16. 11256
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    Impact of Low-dose Imaging on PET Quantitative Accuracy and Image Quality by SU Xuesong, GENG Jianhua, ZHENG Rong, WANG Xuejuan

    Published 2025-02-01
    “…Low-dose imaging represents a significant research focus within the field of PET, with delayed PET imaging also encountering situations with lower imaging doses. …”
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    The Utility of Virtual Reality in Ophthalmology: A Review by Ahuja AS, Paredes III AA, Eisel ML, Ahuja SA, Wagner IV, Vasu P, Dorairaj S, Miller D, Abubaker Y

    Published 2025-05-01
    “…Future research in streamlining VR methods to be more accessible and cost-effective has the potential to overcome these challenges. …”
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  20. 11260

    Association of prognostic nutritional index with all-cause and cardiovascular mortality in adults with depression: NHANES 2005–2018 by Haiyan Ding, Xinchun Zou

    Published 2025-05-01
    “…IntroductionThe Prognostic Nutritional Index (PNI) reflects immune and nutritional status and has been widely used to assess various diseases. However, research on the PNI and mortality in patients with depression is limited.ObjectiveThe study aimed to assess the association between the PNI and both all-cause and cardiovascular disease (CVD) mortality in adults with depression.MethodsThis study analyzed the PNI levels in a cohort of 2,396 adults with depression. …”
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