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All Journal Indonesian Journal of Electrical Engineering and Computer Science The Indonesian Journal of Gastroenterology, Hepatology and Digestive Endoscopy
Kun WANG
Unknown Affiliation
Medicine & Pharmacology

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Hardware-in-the-loop Simulation Platform of Photovoltaic Grid-Connected System Lin FENG; Qing ZHONG; Nanhua YU; Kun WANG; Guojie LI; Kan CHEN
Indonesian Journal of Electrical Engineering and Computer Science Vol 12, No 4: April 2014
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

 The modeling and simulation of photovoltaic power generation system has become an important issue in the field of power generation. Research on the characteristics of photovoltaic (PV) grid-connected system by hardware-in-the-loop simulation could provide convenient experiment condition and accurate result. This article designs a photovoltaic grid-connected simulation platform for digital/physical hybrid real-time simulation, in which RTDS uses a digital-to-analog interface to communicate with external DSP devices. Maximum power point tracking (MPPT) and grid-connected control of a 520kWp PV system are performed on the platform. And the feasibility and effectiveness of hybrid PV system are validated by the analysis of hardware-in-the-loop result in RTDS. DOI : http://dx.doi.org/10.11591/telkomnika.v12i4.4794
Comparation between Fibroscan and Hepatus for Detecting NAFLD in Patients with Metabolic Dysregulation Sun, Jie-hui; Zhang, Ping-ping; Wang, Kun; Xu, Miao; Sun, Jing; Li, Li
The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy Vol 25, No 1 (2024): VOLUME 25, NUMBER 1, April, 2024
Publisher : The Indonesian Society for Digestive Endoscopy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24871/251202411-20

Abstract

Background The clinical application of the innovative instantaneous elasticity and fat attenuation measurement technology, Hepatus, is currently in the evaluation stage. This study aimed to compare the detection performance of Fibroscan and Hepatus in patients with metabolic dysregulation who are "at-risk" for non-alcoholic fatty liver disease (NAFLD).Methods Between January 2021 and April 2021, 149 patients were enrolled in this study. Clinical data were collected, and all patients underwent both Fibroscan and Hepatus assessments to determine liver stiffness measurement (LSM) and attenuation parameters. The correlation between the results obtained from the two transient elastography (TE) devices was analyzed. Receiver operating characteristic curves (ROC) were constructed to compare the diagnostic value of Fibroscan and Hepatus for Hepatic Steatosis Index (HSI)-based NAFLD.Results The detection success rate of Hepatus (100.0%) was higher than that of Fibroscan (96.0%). LSM (r = 0.663, P0.05) and attenuation parameters (r = 0.778, P0.05) obtained by Fibroscan and Hepatus were significantly correlated. Hepatus tended to produce a higher LSM (Hepatus vs. Fibroscan: 6.04 vs. 5.66 kPa, P=0.016) but a lower attenuation parameter than Fibroscan (Hepatus vs. Fibroscan: 264 vs. 277 dB/m, P0.001). The area under the ROC curve for detecting HSI-based NAFLD was 0.811 for Fibroscan and 0.832 for Hepatus.Conclusion Measurements obtained by Fibroscan and Hepatus are strongly correlated, and the diagnostic value of the two TE devices is comparable in detecting HSI-based NAFLD. Hepatus offer a potential TE alternative in NAFLD examination.
Co-Authors Guojie LI Jing Sun Kan CHEN Li Li Lin FENG Nanhua YU Qing ZHONG Sun, Jie-hui Xu, Miao Zhang, Ping-ping