Chia‐Hsien Lin
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View article: Identifying the Coronal Holes in Open Magnetic Field Regions Using Deep Learning
Identifying the Coronal Holes in Open Magnetic Field Regions Using Deep Learning Open
Open magnetic field (OMF) regions are the foot points of the field lines extending to infinity. While they are often considered to coincide with coronal holes (CHs), many studies have reported non-negligible inconsistency between the two. …
View article: A Magnetic Pressure Difference Rule on Moving Bipolar Pores
A Magnetic Pressure Difference Rule on Moving Bipolar Pores Open
Solar pores are transient dark spots in the continuum images of the Sun. Their dynamics are closely associated with solar magnetic fields and plasma motion. Their motions have been found to be correlated with their magnetic pressure differ…
View article: Association Between Magnetic Pressure Difference and the Movement of Solar Pores
Association Between Magnetic Pressure Difference and the Movement of Solar Pores Open
Solar pores are closely related to the concentration, dissipation, and transportation of solar magnetic flux. Their observable characteristics can provide constraints on models and simulations of magnetic flux emergence and formation. The …
View article: Deep Learning Application for Classification of Ionospheric Height Profiles Measured by Radio Occultation Technique
Deep Learning Application for Classification of Ionospheric Height Profiles Measured by Radio Occultation Technique Open
Modern space missions provide a great number of height profiles of ionospheric electron density, measured by the remote sensing technique of radio occultation (RO). The deducing of the profiles from the RO measurements suffers from bias, r…
View article: The Development of Spatial Attention U‐Net for the Recovery of Ionospheric Measurements and Extraction of Ionospheric Parameters
The Development of Spatial Attention U‐Net for the Recovery of Ionospheric Measurements and Extraction of Ionospheric Parameters Open
We train a deep learning artificial neural network model, Spatial Attention U‐Net, to recover useful ionospheric signals from noisy ionogram data measured by Hualien's Vertical Incidence Pulsed Ionospheric Radar. Our results show that the …
View article: Existence of the Closed Magnetic Field Lines Crossing the Coronal Hole Boundaries
Existence of the Closed Magnetic Field Lines Crossing the Coronal Hole Boundaries Open
Coronal holes (CHs) are regions with unbalanced magnetic flux and have been associated with open magnetic field (OMF) structures. However, it has been reported that some CHs do not intersect with OMF regions. To investigate the inconsisten…
View article: State-of-the-Art Capability of Convolutional Neural Networks to Distinguish the Signal in the Ionosphere
State-of-the-Art Capability of Convolutional Neural Networks to Distinguish the Signal in the Ionosphere Open
Recovering and distinguishing different ionospheric layers and signals usually requires slow and complicated procedures. In this work, we construct and train five convolutional neural network (CNN) models: DeepLab, fully convolutional Dens…
View article: Recovery of Ionospheric Signals Using Fully Convolutional DenseNet and Its Challenges
Recovery of Ionospheric Signals Using Fully Convolutional DenseNet and Its Challenges Open
The technique of active ionospheric sounding by ionosondes requires sophisticated methods for the recovery of experimental data on ionograms. In this work, we applied an advanced algorithm of deep learning for the identification and classi…
View article: Examination of the EUV Intensity in the Open Magnetic Field Regions Associated with Coronal Holes
Examination of the EUV Intensity in the Open Magnetic Field Regions Associated with Coronal Holes Open
Coronal holes can be identified as the regions with magnetic field lines extending far away from the Sun, or the darkest regions in EUV/X-ray images with predominantly unipolar magnetic fields. A comparison between the locations of our det…
View article: Multi-scale mapping for collagen-regulated mineralization in bone remodeling of additive manufacturing porous implants
Multi-scale mapping for collagen-regulated mineralization in bone remodeling of additive manufacturing porous implants Open
Long term success of metallic fusion cages depends on mechanobiological processes through the bone incorporation and rich osseointegration. An optimal configuration of porous titanium-aluminum-vanadium (Ti6Al4V) implant fabricated via the …
View article: Solar-cycle Variations of Meridional Flows in the Solar Convection Zone Using Helioseismic Methods
Solar-cycle Variations of Meridional Flows in the Solar Convection Zone Using Helioseismic Methods Open
The solar meridional flow is an axisymmetric flow in solar meridional planes, extending through the convection zone. Here we study its solar-cycle variations in the convection zone using SOHO /MDI helioseismic data from 1996 to 2010, inclu…
View article: Store-operated Ca2+ Entry Facilitates the Lipopolysaccharide-induced Cyclooxygenase-2 Expression in Gastric Cancer Cells
Store-operated Ca2+ Entry Facilitates the Lipopolysaccharide-induced Cyclooxygenase-2 Expression in Gastric Cancer Cells Open
Helicobacter pylori has been identified as one of the major causes of chronic gastritis, gastric and duodenal ulcers, and gastric cancer. Lipopolysaccharide (LPS) is a major component of the outer membrane of gram-negative bacteria, and H …
View article: Solar Open Flux Migration from Pole to Pole: Magnetic Field Reversal
Solar Open Flux Migration from Pole to Pole: Magnetic Field Reversal Open
Coronal holes are solar regions with low soft X-ray or low extreme ultraviolet intensities. The magnetic fields from coronal holes extend far away from the Sun, and thus they are identified as regions with open magnetic field lines. Corona…
View article: The fast development of solar terrestrial sciences in Taiwan
The fast development of solar terrestrial sciences in Taiwan Open
In Taiwan, research and education of solar terrestrial sciences began with a ground-based ionosonde operated by Ministry of Communications in 1952 and courses of ionospheric physics and space physics offered by National Central University …
View article: A Novel Radio Frequency Identification (RFID)- Based Thermal Convection Nonfloating-Type Accelerometer with Stacking Layers under Heater and Thermal Sensors
A Novel Radio Frequency Identification (RFID)- Based Thermal Convection Nonfloating-Type Accelerometer with Stacking Layers under Heater and Thermal Sensors Open
radio frequency identification (RFID)