Showing 101 - 119 results of 119 for search 'Ljungby~', query time: 1.93s Refine Results
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    Investigating Low-Frequency Electromagnetic Fluctuations on PCB Surfaces: A Near-Field Analysis of CBCPW Transmission Lines up to 15.2 MHz by Mariusz Zubert, Mariusz Jankowski, Zbigniew Kulesza

    Published 2025-01-01
    “…Advanced statistical methods, including the Hurst exponent and Ljung-Box tests, are integrated with traditional near-field measurements to quantify electromagnetic noise persistence and independence across frequencies. …”
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  4. 104

    Enhancing air quality predictions in Chile: Integrating ARIMA and Artificial Neural Network models for Quintero and Coyhaique cities. by Fidel Vallejo, Diana Yánez, Patricia Viñán-Guerrero, Luis A Díaz-Robles, Marcelo Oyaneder, Nicolás Reinoso, Luna Billartello, Andrea Espinoza-Pérez, Lorena Espinoza-Pérez, Ernesto Pino-Cortés

    Published 2025-01-01
    “…Model performance underwent meticulous evaluation, utilizing metrics such as the Akaike Information Criterion (AIC), Ljung-Box statistical tests, and diverse statistical indicators. …”
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    Epidemic Situation of Brucellosis in Jinzhou City of China and Prediction Using the ARIMA Model by Lulu Wang, Chen Liang, Wei Wu, Shengwen Wu, Jinghua Yang, Xiaobo Lu, Yuan Cai, Cuihong Jin

    Published 2019-01-01
    “…Moreover, the ARIMA(1,1,1)(0,1,1)12 model was finally selected among quite a few plausible ARIMA models based upon the parameter test, correlation analysis, and Box–Ljung test. Notably, the incidence from 2005 to 2014 forecasted using this ARIMA model fitted well with the actual incidence data. …”
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  8. 108

    Trends, seasonal variations and forecasting of chronic respiratory disease morbidity in charcoal producing areas, northwest Ethiopia: time series analysis by Mulugeta Tesfa, Achenef Motbainor, Muluken Azage Yenesew

    Published 2025-01-01
    “…The stationarity of the data was assessed with a line chart and statistically with the Ljung-Box Q-test. SPSS version 27 was utilized for statistical analysis.ResultsThe annual morbidity rate of CRD has shown an increasing trend in both sexes over a seven-year period among people aged 15 years and older. …”
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    Estimating and forecasting bitcoin daily prices using ARIMA-GARCH models by Quang Phung Duy, Oanh Nguyen Thi, Phuong Hao Le Thi, Hai Duong Pham Hoang, Khanh Linh Luong, Kim Ngan Nguyen Thi

    Published 2024-10-01
    “…Model adequacy was checked using plots of residuals and the Ljung–Box test. Findings – Using the Box–Jenkins method, various AR and MA lags were tested to determine the most optimal lags. …”
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    Economic burden of breast cancer in India, 2000–2021 and forecast to 2030 by Rakesh N Pillai, Aleena Alex, Narassima M.S., Vivek Verma, Ajil Shaji, Keechilat Pavithran, D. K. Vijaykumar, Denny John

    Published 2025-01-01
    “…The residuals were tested using the Box-Ljung test to confirm the absence of autocorrelation and verify that they followed a white noise distribution. …”
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