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    Analytical Framework for Online Calibration of Sensor Systematic Errors Under the Generic Multisensor Integration Strategy by Benjamin Brunson, Jianguo Wang

    Published 2025-05-01
    “…Taking a multi-sensor integrated kinematic positioning and navigation system as an example, a pre-analysis of the system performance can be conducted: the observability of individual sensor systematic error states; minimum estimable values of sensor systematic error states; and minimum detectable systematic errors in sensor observations. …”
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  3. 123

    Study of Multivariate Background Error Characteristics of Convective System on Plateau Slope and Typhoon System Based on Convective-Scale Ensemble Samples by Wanli ZHANG, Yuanbing WANG, Rou LI, Yaodeng CHEN, Deming MENG, Xinyao QIAN, Xili JIN

    Published 2025-06-01
    “…The effective assimilation of observation data in the slope areas of the Qinghai-Xizang (Tibetan) Plateau and typhoon systems has a significant impact on the capabilities of weather forecasting in China, with background error being a key factor affecting the performance of data assimilation.The purpose of this study is to gain a deeper understanding of the characteristics of background errors in conventional control variables and hydrometeor control variables within convective systems on the slopes of the Qinghai-Xizang (Tibetan) Plateau and typhoon systems, so as to develop the data assimilation scheme which is applicable to the convective systems on the slopes of the Qinghai-Xizang (Tibetan) Plateau and typhoon systems.This study employs the Ensemble Transform Kalman Filter (ETKF) and the hybrid Ensemble-Variational data assimilation method to update the ensemble perturbation and the ensemble mean respectively to produce convective-scale ensemble forecast samples with 80 ensemble members and 4-kilometers resolution.This study focuses on cases of convective weather from the northeast slope of the Qinghai-Xizang (Tibetan) Plateau in mid-August 2022 and Typhoon "Meihua", the 12th typhoon of 2022.Multivariate background error covariances, including those for multiphase hydrometeor and vertical velocity, were computed through physical transformation, vertical transformation, and horizontal transformation.Analyses of the spatial error characteristics, including the eigenvalues, eigenvectors, and characteristic length scales were conducted, and the results of the analyses indicate that background errors are more pronounced in the case of convective system on the slope of the Qinghai-Xizang (Tibetan) Plateau in comparison to the typhoon system.At the same time, the simulation of hydrometeor variables and vertical velocity is less precise in the case of convective system on the slope of the Qinghai-Xizang (Tibetan) Plateau compared to the typhoon system.In the context of data assimilation for these comparable convective systems, the analysis tends to be more aligned with observations and less so with the background, this feature highlights the necessity for high-quality and comprehensive observations in the slope areas of the Qinghai-Xizang (Tibetan) Plateau.In addition, the atmospheric characteristics and the horizontal scale of hydrometeor variables and vertical velocity in the case of convective system on the slope of the Qinghai-Xizang (Tibetan) Plateau display smaller and more localized features compared with those observed in the typhoon system.Moreover, hydrometeor control variables and the vertical velocity exhibit smaller horizontal scales and more pronounced localized characteristics compared to conventional control variables, therefore potentially leading to the influence range of observations and information related to hydrometeor control variables in the slope areas of the Qinghai-Xizang (Tibetan) Plateau relatively limited in the context of the subsequent assimilation analysis.…”
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    Thermal error modeling of slant bed CNC lathe spindle based on BiLSTM with data augmentation and grey wolf optimizer algorithm by Musab Alataiqeh, Hu Shi, Qiangqiang Qu, Xuesong Mei, Haitao Wang

    Published 2025-06-01
    “…Utilizing finite element simulation in ANSYS, the thermal characteristics of the lathe are examined, yielding insights into the dynamics of heat transfer. Experimental data are processed using fuzzy c-means clustering and grey relational analysis, which leads to the identification of four critical temperature-sensitive points. …”
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    Analysis of Preanalytical Errors in Clinical Biochemistry Laboratory of a Tertiary Care Hospital: A Retrospective Study by Dhanalakshmi Balasundararaj, M Senthil Prabhu, S Thilagarajan, Kathiravan Rajendran

    Published 2024-12-01
    “…All the cases/blood samples from Outpatient Department (OPD) and Inpatient Department (IPD), received and rejected during this period were included under study. The data collection and analysis was done over a period of five months using the sample rejection and resample description from Laboratory Information System (LIS). …”
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    Study of Isothermal, Kinetic, and Thermodynamic Parameters for Adsorption of Cadmium: An Overview of Linear and Nonlinear Approach and Error Analysis by Fozia Batool, Jamshed Akbar, Shahid Iqbal, Sobia Noreen, Syed Nasir Abbas Bukhari

    Published 2018-01-01
    “…Feasibility and viability of sorption process were evaluated by calculating kinetics and thermodynamics of the process, while error analysis suggested best fitted sorption model on sorption data. …”
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    DOES ISLAMIC FINANCE DRIVE ECONOMIC GROWTH IN INDONESIA? AN ANALYSIS USING VECTOR ERROR CORRECTION MODEL by Eko Kurniawan, Lina Nugraha Rani, Tanza Dona Pertiwi

    Published 2025-05-01
    “…The independent variables include Islamic banking assets, outstanding sukuk value, and total zakat distribution. The analysis is conducted using the vector error correction model (VECM), beginning with stationarity testing, optimal lag selection, cointegration testing, model estimation, and variance decomposition analysis. …”
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    Ground vehicle gravimetry system based on SINS and two-dimensional LDV integration: error analysis and verification by Jiayi Cheng, Zekun Yang, Chengzhi Hou, Xu Zhu, Guo Wei, Wenjian Zhou, Mailun Chen, Ye Tian, Chunfeng Gao

    Published 2024-01-01
    “…To solve this problem, this study proposed a gravimetry method specifically for the environment without GNSS signal, which consists of the high-precision Strapdown Inertial Navigation System (SINS) and Laser Doppler Velocimeter (LDV) developed by our unit. Based on the error analysis, the system index requirements were proposed, and the relevant indexes of the LDV are verified through simulation and vehicle experiment. …”
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    Analysis and reduction of topographic effect induced errors in land surface temperature retrieval over the Tibetan Plateau by Yuejie Zhang, Qinghong Sheng, Kerui Li, Bo Wang, Jun Li, Xiao Ling, Fan Gao

    Published 2025-07-01
    “…Additionally, the limited and sparse ground stations hinder pixel-level error analysis. These limitations restrict accurate characterization of topographic effects on LST errors and impede the effective application of current LST datasets. …”
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    A Gender-based Analysis of EFL Female Teachers’ Attitude Towards Oral Error Correction in Iranian Classroom Setting by Maryam Hamzehloo

    Published 2024-03-01
    “…While extensive research delves into error analysis, the interplay of gender and attitudes towards oral error correction (OEC) in English as a Foreign Language (EFL) classrooms remains understudied. …”
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