RESEARCH ON FAILURE MECHANISM OF FRICTION-WEAR OF TUBING STRING IN 3 H CURVED WELL (MT) by GUO XiaoQiang, LI Xiao, LIU Jun, HUANG Liang, FANG DaKe, WEI AnChao

“…Thirdly, there is an optimal position of packer and centralizer in the field, which is related to the well structure, string structure and downhole tool size, and can be determined by the proposed analysis method to guide the design of packer and centralizer. The research results can effectively improve the service life of tubing string in 3H gas wells.…”
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Research on public network and private network diversion scheme for 4G/5G users by MA Hongyuan, FENG Zheng, ZHOU Wei, SONG Xuguang, YANG Xiaole

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Research of the Shift Schedule and Ratio Optimization for the Transmission System of a Two-speed Electric Vehicle by Zhou Yunshan, Yang Kefeng

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Data quality in centenarian research: The proxy-centenarian relationship and item nonresponse in the SWISS100 study. by Daniele Zaccaria, Justine Falciola, Barbara Masotti, Armin von Gunten, François Herrmann, Daniela S Jopp, Stefano Cavalli

“…The findings stress the importance of carefully choosing proxy respondents, preferably children, to improve data quality and inclusivity for those individuals hard to reach or to interview. Future research should investigate various data quality indicators and rely on larger samples to enhance the representation and methodological rigour in the study of the oldest-old.…”
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Research of Arc Segment Metal Block Contact Character of Metal Belt Continuously Variable Transmission by Zhang Wu, Guo Wei, Zhang Wugang, Xing Le, Zhou Xuegang

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Research on Image Recognition and Classification Algorithms in Cloud Computing Environment Based on Deep Neural Networks by Zheshu Jia

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Research and Application of Rock Burst Hazard Assessment of the Working Face Based on the CF-TOPSIS Method by Feng Zhu, Haowei Song, Bingxiang Huang, Binxin Hu, Siqi Li, Guangdong Song, Hua Zhang, Tongyu Liu, Fuwu Ma

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Online Education after the Pandemic: Student Problems and Opportunities Research Using Big Data Tools by A. V. Bogdanova, Yu. K. Aleksandrova, V. L. Goiko, V. V. Orlova

“…The study results showed that Russian university students still face a number of challenges, including weak technical infrastructure at universities, a digital divide in access to online education, and negative attitudes towards distance learning.The scientific problem of the study is the contradiction between the existing volume of unstructured data of students’ digital traces in social networks and the lack of a scientifically-based and proven methodological approach to the analysis and evaluation of this voluminous data, which creates obstacles to fundamental research into the relationship between students’ activity in social networks and their satisfaction quality of the educational process. …”
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Research and application of 5G eMBB network rate improvement based on urbans scenarios by Sheng ZHOU, Tianpu LI

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Research Progress of Bacteriocin Combined with Physical Technology in the Prevention and Control of Foodborne Pathogens and Spoilage Microorganisms by Mingzhu WANG, Zihao TIAN, Zhongmei TAN, Jie REN, Gaoyun WU, Jinqi GUO, Yuchang YAO, Yuan YIN, Bailiang LI, Jiage MA, Wei YU

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Proceedings of the International Symposium on Passive Sampling of Gaseous Air Pollutants in Ecological Effects Research: Preface by Andrzej Bytnerowicz, Sagar Krupa, Roger Cox

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Error Analysis and Research of the Main Pin Inclination Verification Model of Four Wheel Alignment Instrument by Liu Quanpan, He Jingliang, Yang Wenwu, Chen Yong

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Research of Curve Passing Performance of Track Car in Vehicle Group Chain Conveyor based on SIMPACK by Yang Li, Yaocheng Zhang, Zhaojian Yang, Xianglei Li

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RETRACTED: Unlocking the potential of faba bean in Moroccan agriculture: a review- from research to perspective by Boutagayout Abdellatif, Belmalha Saadia, Nassiri Laila, Bouiamrine El Houssine

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Research on Open-Closed-Loop Iterative Learning Control with Variable Forgetting Factor of Mobile Robots by Hongbin Wang, Jian Dong, Yueling Wang

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Causality in Statistical Power: Isomorphic Properties of Measurement, Research Design, Effect Size, and Sample Size by R. Eric Heidel

“…Like most statistical concepts, statistical power tends to induce cognitive dissonance in hepatology researchers. However, planning for statistical power by an a priori sample size calculation is of paramount importance when designing a research study. …”
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Research on Intelligent Monitoring and Protection Equipment of Vital Signs of Underground Personnel in Coal Mines: Review by Yuntao Liang, Yingjie Liu, Changjia Lu, Dawei Cui, Jinghu Yang, Rui Zhou

“…With the development of technology, the application of intelligent security technology in coal mine safety has broad prospects. In this paper, the research progress of vital signs monitoring and support equipment for underground personnel in coal mines is reviewed. …”
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Research on influencing factors of college teachers' second child fertility intentions--Taking Jinan as an example. by Yanling Yao

“…Future research can further explore the impact of fertility policy on the fertility intentions of other groups.…”
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Value realization of intelligent emergency management: research framework from technology enabling to value creation by Yan Guo, Yan Song, Mingyue Zhang

“…First, approximately 3900 documents from the intelligent emergency field are analyzed to determine the future research trend in intelligent emergency management. …”
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Studies and Research on the Replacement of Pipes Made of Steel P355N, Intended for Domestic Water by Beatrice Daniela TUDOR, Dumitra STERIAN

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