Yueliang Liu

Influence of continuous learning on the academic research ability of Chinese university teachers

Yang Liu, Jun Tan, Shiou Yih Lee, Yueliang Liu et autres

This study investigates the influence of continuous learning on the academic research abilities of university teachers in China, focusing on the dimensions of learning frequency, learning modes, and resource input. Drawing upon Self-Determination Theory and Social Cognitive Theory, the research employs a …

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The impact of psychological factors on the academic achievement of urban and rural students in Sichuan, China

Jingyi Liu, Jun Tan, Shiou Yih Lee, Yueliang Liu et autres

Drawing on the persistent urban–rural education gap in Sichuan, this study examines how self-actualization, self-esteem, and basic psychological needs influence university students' academic achievement. A quantitative, descriptive design was employed, utilizing simple random sampling of 400 students from Sichuan universities. Primary data …

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Evidence for particle acceleration approaching PeV energies in the W51 complex

Z. Cao, F Aharonian, Axikegu, Y.X Bai et autres

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Optical Monitoring and Intraday Variabilities of BL Lacertae

Yu-Hai Yuan, G. Du, J. H. Fan, Yueliang Liu et autres

Abstract BL Lacertae is a key monitoring target of the 1.26 m National Astronomical Observatory–Guangzhou University Infrared/Optical telescope. Within the monitored duration from 2020 September 4 to 2022 September 28, we report 13,948 observations at the g, r, and i bands (g …

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A tera–electron volt afterglow from a narrow jet in an extremely bright gamma-ray burst

Z. Cao, F. Aharonian, Qier An, Axikegu et autres

Some gamma-ray bursts (GRBs) have a tera-electron volt (TeV) afterglow, but the early onset of this has not been observed. We report observations with the Large High Altitude Air Shower Observatory (LHAASO) of the bright GRB 221009A, which serendipitously occurred within the …

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Research on the Dynamic Assessment of Comprehensive Risk Measurement and Investment Performance of Financial Assets

Yeyong Zhang, Yueliang Liu, Sama Zhu

Financial assets have the basic characteristics of risk, profitability, liquidity and so on. How to effectively complete the dynamic monitoring of comprehensive risk and investment performance of financial assets is still an important content of asset investment and management business. This paper …

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Fluctuation Trend Prediction and Investment Allocation Optimization of Risk Assets and Safe-haven Assets

Yeyong Zhang, Yueliang Liu, Zihan Zeng

Safe-haven assets are a safe and effective value storage and risk hedging tool in the period of market turbulence, while risk assets show multiple characteristics such as the coexistence of high risk and high return, great variability, strong volatility and so on. …

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Reconstruction of Cherenkov image by multiple telescopes of LHAASO-WFCTA

F. Aharonian, Qi An, Axikegu, Lixin Bai et autres

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Long-term Optical Monitoring of the TeV BL Lacertae Object 1ES 2344 + 514

J. T. Cai, S. O. Kurtanidze, Yueliang Liu, O. M. Kurtanidze et autres

Abstract Variability is one of the main observational characteristics of blazars. Studying variability is an efficient method to reveal the nature of active galactic nuclei. In the present work, we report optical R-band photometry observations of a TeV blazar, 1ES 2344 + …

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Erratum: “Optical Photometry of the Quasar 3C 454.3 during the Period 2006–2018 and the Long-term Periodicity Analysis” (2021, ApJS, 253, 10)

J. H. Fan, S. O. Kurtanidze, Yueliang Liu, O. M. Kurtanidze et autres

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Discovery of the Ultrahigh-energy Gamma-Ray Source LHAASO J2108+5157

Z. Cao, F. Aharonian, Q. An, Axikegu et autres

Abstract We report the discovery of an ultrahigh-energy (UHE) gamma-ray source, LHAASO J2108+5157, by analyzing the LHAASO-KM2A data of 308.33 live days. A significant excess of gamma ray–induced showers is observed in both energy bands of 25−100 and >100 TeV with 9.5σ …

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Optical Photometry of the Quasar 3C 454.3 during the Period 2006–2018 and the Long-term Periodicity Analysis

J. H. Fan, Sofia O. Kurtanidze, Yueliang Liu, O. M. Kurtanidze et autres

Abstract In this work, we present 8523 pairs of R-band optical photometry observations for the quasar 3C 454.3 made during the period of 2006 October–2018 February on the 70 cm meniscus telescope at Abastumani Observatory, Georgia, to study its intraday variabilities (IDVs) …

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