이은정 교수

Assessment of left ventricular diastolic function plays a major role in the diagnosis and prognosis of cardiac diseases, including heart failure with preserved ejection fraction. We aimed to develop an artificial intelligence (AI)-enabled electrocardiogram (ECG) model to identify echocardiographically determined diastolic dysfunction and increased filling pressure. We trained, validated, and tested an AI-enabled ECG in 98,736, 21,963, and 98,763 patients, respectively, who had an ECG and echocar

While the general belief is that the best way to predict electric load is through individualized models, the existing studies have focused on one-for-all models because the individual models are difficult to train and require a significantly larger data accumulation time per individual. In recent years, applying deep learning for forecasting electric load has become an important research topic but still one-for-all has been the main approach. In this work, we adopt transfer learning and meta lea

The purpose of this study was to examine the relationship between snack food intakes and dental caries in 661 Korean elementary school children. After each meal, 59.6% of the surveyed children ate snack foods, in particular, they ate snack heavily after lunch. The snack food items causing dental caries contained high levels of sugar and were convenience foods, which the children had preference toward. In addition, the intake frequency of snack foods substituted for meals was greater than 54%. Ba

본 연구에서는 PISA수학성취도 자료와 국내외 성차 관련 연구 자료를 분석하여 우리나라 학생들의 성차 추이와 그에 대한 배경을 살펴보았다. 우리나라는 2000년과 2003년 PISA수학성취도 평가에서 유의미하게 큰 성차를 보인 반면 2006년부터 성차가 급격히 감소하였다. 이러한 성차의 급격한 감소 현상에 영향을 미친 요인을 탐색하기 위해 국내외 성차 관련 연구 자료를 분석하였으며, 이를 토대로 여성의 이공계 진출을 유도하는 국가차원의 정책적 지원과 같은 사회문화적 변화와 교육과정과 그에 따른 교과서의 변화 등과 같은 요인들이 여학생의 수학 성취도 향상에 긍정적인 영향을 미쳤을 것으로 판단된다.

Biomedical composites of hydroxyapatite (HA) and bioactive glass (BG) have been difficult to obtain as a dense body without the undesirable occurrence of thermal reactions and phase degradation. Herein, HA–BG dense composites were produced by the hot‐pressing technique. A range of HA–BG powder mixtures (30–50 wt% BG) was fully densified by hot pressing at temperatures as low as ∼700°–800°C. On the other hand, the HA–BG composites could not be densified by pressureless sintering because their com

Objectives: To investigate the patterns of unintentional home injuries in Korea. Methods: The study population was 12,382,088 people who utilized National Health Insurance services due to injuries (main diagnosis codes S00 to T28) during 2006. Stratified samples(n=459,501) were randomly selected by sex, age group and severity of injury. A questionnaire was developed based on the International Classification of External Causes of Injury and 18,000 cases surveyed by telephone were analyzed after b

Abstract With the increasing demand for a better FPD image quality, better evaluation metrics and advanced display quality measurement methods are required to meet these needs. There are many measurement methods for evaluating the viewing angle of various display devices, but these methods, which include luminance drop, color shift, and contrast ratio decrease, are imperfect considering that human perception does not completely correlate to them. In this paper, a new method of measuring the perc

Cardiac myxoma is rare in children and often associated with cerebrovascular events. Reported herein is the case of a 9-year-old boy who presented with acute obstruction of the aortic bifurcation associated with a huge left atrial (LA) myxoma, thereby leading to acute ischemia of the lower extremities. Immediate surgical removal of the LA myxoma with concomitant percutaneous embolectomy using a Forgathy catheter was done, with relief of ischemic symptoms. Cardiac myxoma should always be consider

This article examines some techniques of rule that the Ottoman empire employed to project its power over the centuries. And it explores the interaction of internal and external factors that led to the rise and demise of the Ottoman empire. The central dynastic Ottoman state employed a variety of strategies to assure its own perpetuation. Especially as the multi-ethnic, multi-religious Ottoman empire, state power relied on an effective and tolerant model of a multi-religious political system that

In order to provide seamless VoIP service in the mobile wireless environment, we need to minimize the disruption time to process a handoff of an ongoing VoIP call. There are several schemes focusing on this issue. However, they require a lot of signalling message exchanges, resulting in exposures of confidential information of the mobile nodes in network. We propose a dynamic shadow registration scheme eliminating these disadvantages. Our simulation results show our scheme can significantly redu