Explanipedia

Neurologic Dysfunction Assessment in Parkinson Disease Based on Fundus Photographs Using Deep Learning Open

Sang-Il Ahn, Jitae Shin, Su Jeong Song, Won Tae Yoon, Min Sagong , et al. · 2023

Importance Until now, other than complex neurologic tests, there have been no readily accessible and reliable indicators of neurologic dysfunction among patients with Parkinson disease (PD). This study was conducted to determine the role o…

Future Image Synthesis for Diabetic Retinopathy Based on the Lesion Occurrence Probability Open

Sang-Il Ahn, Quang Trung Pham, Jitae Shin, Su Jeong Song · 2021

Diabetic Retinopathy (DR) is one of the major causes of blindness. If the lesions observed in DR occur in the central part of the fundus, it can cause severe vision loss, and we call this symptom Diabetic Macular Edema (DME). All patients …

Automatic Drusen Segmentation for Age-Related Macular Degeneration in Fundus Images Using Deep Learning Open

Quang Trung Pham, Sang-Il Ahn, Su Jeong Song, Jitae Shin · 2020

Drusen are the main aspect of detecting age-related macular degeneration (AMD). Ophthalmologists can evaluate the condition of AMD based on drusen in fundus images. However, in the early stage of AMD, the drusen areas are usually small and…

Performance of Ensemble Methods with 2D Pre-trained Deep Learning Networks for 3D MRI Brain Segmentation Open

Sang-Il Ahn, Toan Duc Bui, Hyekyoung Hwang, Jitae Shin · 2019

Recording and Replay System for Multi-band RF Signals Using Compressed Sensing Technique Open

Yookyung Kim, Jae-Hyuck Park, Han Oh, Sang-Il Ahn · 2018

Implementation and Performance Evaluation of Semi-active Ranging System Open

Han Oh, Sang-Cherl Lee, Jaedong Seong, Myungmuk Kim, Sang-Il Ahn · 2018

Orbit determination (OD) for the geostationary earth orbit (GEO) satellite, Communication, Ocean and Meteorological Satellite (COMS), utilizes range information which is obtained by measuring the round trip time of a ranging signal and ang…

Performance Enhancement of a Satellite's Onboard Antenna Tracking Profile using the Ground Station Searching Method Open

Young-Joo Song, Jung Ro Lee, Jihoon Kang, Moon-Jin Jeon, Sang-Il Ahn · 2016

In satellite operations, stable maneuvering of a satellite's onboard antenna to prevent undesirable vibrations to the satellite body is required for high-quality high-resolution images. For this reason, the onboard antenna's angular rate i…

Advanced trend analysis system of telemetry for KOMPSAT series Operations Open

Young Cheul Kim, Hyun Chul Baek, Young-Wook Kim, Myung Muk Kim, Sang-Il Ahn · 2016

Covariance Analysis and Its Impact on the Operational Conjunction Assessment Open

Hyeonjeong Yim, Okchul Jung, Hwayeong Kim, Sang-Il Ahn · 2016

Relieving the negative effects of shift working Open

Hyun Chul Baek, Young-Wook Kim, Young Cheul Kim, Myung Muk Kim, Sang-Il Ahn , et al. · 2016

Design and Implementation of KARI SLE User Interface Open

Han Oh, In Hoi Koo, Sang-Il Ahn · 2016

Case Study of Exceptional Conditions in Precision Orbit Determination of KOMPSAT Series for Robustness and Timeliness Open

Hwayeong Kim, Okchul Jung, Hyeonjeong Yim, Sang-Il Ahn · 2016

has been conducting the satellite mission operations for Korea Multi-Purpose Satellite (KOMPSAT) series

Preliminary Study on Interplanetary Trajectory Design using Invariant Manifolds of the Circular Restricted Three Body Problem Open

Okchul Jung, Sang-Il Ahn, Daewon Chung, Eunkyou Kim, Hyochoong Bang · 2015

본 논문에서는 원형 제한 3체 문제의 불변위상공간을 이용하여 지구-달 또는 행성간의 궤적을 설계하고 해석하는 기법을 소개한다. 2체 문제를 조합하는 고전적인 방식 대신에 원형 제한 3체 문제에 대한 운동방정식, 궤적의 동적 특성, 평형점 주변의 리아프누프 궤도와 불변위상공간의 특성을 기술한다. 원형 제한 3체 문제의 불변위상공간을 이용했을 때, 지구-달 시스템의 궤적설계 방식과 태양-목성 시스템의 경계면에서의 초기조건에 따른…

Sang-Il Ahn YOU? Author Swipe