A5048202969- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Tunneling and Rock Mechanics
- Geoscience and Mining Technology
- Advanced materials and composites
- Hydrocarbon exploration and reservoir analysis
- Frailty in Older Adults
- Stroke Rehabilitation and Recovery
- Reservoir Engineering and Simulation Methods
- Geomechanics and Mining Engineering
- Spinal Cord Injury Research
- Oil and Gas Production Techniques
- Nutrition and Health in Aging
- Rock Mechanics and Modeling
- Advanced Sensor and Control Systems
- GDF15 and Related Biomarkers
- Geotechnical and Geomechanical Engineering
- Extraction and Separation Processes
- Traumatic Brain Injury Research
- Telemedicine and Telehealth Implementation
- Intimate Partner and Family Violence
- Ethics in Clinical Research
- Spondyloarthritis Studies and Treatments
- CO2 Sequestration and Geologic Interactions
- Fibromyalgia and Chronic Fatigue Syndrome Research
Hong Kong Polytechnic University
2023-2025
Bohai University
2024-2025
China University of Geosciences
2010-2024
Chinese Academy of Medical Sciences & Peking Union Medical College
2021-2023
Ministry of Education of the People's Republic of China
2021
China Geological Survey
2020
Chinese Academy of Geological Sciences
2019-2020
Ministry of Natural Resources
2020
China University of Geosciences (Beijing)
2020
Beijing University of Posts and Telecommunications
2011
To explore the incidence of workplace violence against nurses in Chinese hospitals.Previous systematic reviews on health care workers did not include many articles published Chinese. Although several studies have investigated cases providers China, no meta-analysis has been conducted to assess nurses.In this study, relevant data were retrieved from up July 2020. A was using R software (Version 4.0).The 12-month among 71% (95% CI 67%-75%), and verbal most common sub-type (63%, 95%...
Cognitive impairment and depression frequently occur after spinal cord injury (SCI) adversely affect functional independence quality of life. There is a lack research in addressing this important area SCI rehabilitation/care. The home-based Action Observation Motor Imagery (AOMI), form neurorehabilitation, was developed grounded theoretical foundations practical evidence, rendering it especially suitable for adults with SCI. This study aims to evaluate the feasibility, acceptability,...
Abstract In gas drilling operations, the rate of penetration (ROP) parameter has an important influence on costs. Prediction ROP can optimize operational parameters and reduce its overall cost. To predict with satisfactory precision, a stacked generalization ensemble model is developed in this paper. Drilling data were collected from shale survey well Xinjiang, northwestern China. First, Pearson correlation analysis used for feature selection. Then, Savitzky-Golay smoothing filter to noise...
Drillability is a precondition for drilling-trajectory planning and intelligent control, as well an important foundation achieving safety, high quality, efficiency in deep drilling. A formation drillability modeling method based on the Nadaboost-ELM algorithm proposed. First, logging parameters are chosen inputs of extreme learning machine (ELM) model, whose output drillability. Then, models trained weak learners using improved Adaboost algorithm. Finally, combined into strong learner. The...
To achieve safety, high quality, and efficiency in deep drilling, it is necessary to get formation drillability around the borehole during drilling-trajectory planning intelligent drilling control. Since data have characteristics of low value density noise process difficult model drilling. In this paper, a new online modeling method for based on sequential nadaboost extreme learning machine (OS-Nadaboost-ELM) algorithm has been proposed. Firstly, well logging parameters are chosen as inputs...
The multiple fracture theory is the hydraulic fracturing frontier theory, especially for coal fractures, physical and mechanical properties of which different from homogeneous sandstone. study difficult faces many problems. According to rock mechanics structural characteristics based on analysis stress field near by fracture, results shown that sub-fracture tension easily formed in area well shear far more process fracturing. And paper revealed development rule fracture.
The feasibility of hydrate exploitation technology has been verified by two rounds trial productions in the South China Sea, but it is also faced with problem low gas production efficiency. Therefore, this paper proposed four different cases multihorizontal wells and established simulation models. Then, influence patterns reservoir stimulation offset distances on dissociation, saturation change, pressure distribution were studied. To understand dissociation behaviors performances, coupling...
As wavelet transform is widely used in many fields, theory plays an important role signal processing, because of it's advantages getting bigger output SNR and obtaining better smoothness filtering effect. First all, the paper elaborates fundamental concept multi-resolution. Then, it expatiates process denoising using transform. Four signals, including heavy sine, bumps, doppler quadchirp, polluted by noise are selected as sample data Minimum Mean Square Error to go on process. we elaborate...