• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2021년도 추계학술대회
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• pp.91-94
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• 2021

As deep learning technologies becoming developed, realistic fake videos synthesized by deep learning models called "Deepfake" videos became even more difficult to distinguish from original videos. As fake news or Deepfake blackmailing are causing confusion and serious problems, this paper suggests a novel model detecting Deepfake videos. We chose Residual Convolutional Neural Network (Resnet50) as an extraction model and Long Short-Term Memory (LSTM) which is a form of Recurrent Neural Network (RNN) as a classification model. We adopted cosine similarity with hinge loss to train our extraction model in embedding the features of Deepfake and original video. The result in this paper demonstrates that temporal features in the videos are essential for detecting Deepfake videos.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.463-467
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• 2015

Mega-shock means a sporadic event such as the earning shock, which occurred by sudden market changes, and it can cause serious problems of profit loss of international construction projects. Therefore, the early response and prevention by analyzing and predicting the Mega-shock is critical for successful project delivery. This research is preliminary study to develop a prediction model that supports market condition analysis and Mega-shock forecasting. To avoid disadvantages of classic statistical approaches that assume the market factors are linear and independent and thus have limitations to explain complex interrelationship among a range of international market factors, the research team explored the Fractal Theory that can explain self-similarity and recursiveness of construction market changes. The research first found out correlation of the major market factors by statistically analyzing time-series data. The research then conducted a base of the Fractal analysis to distinguish features of fractal from data. The outcome will have potential to contribute to building up a foundation of the early shock warning system for the strategic international project management.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.49-50
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• 2015

Since the mid-2000s, Korean large-sized construction companies have pursued in earnest to expand their business to global construction market in surroundings that domestic market have a continuous and long-term stagnation. However, during last a few years, they have experienced the serious financial loss from international projects. In the meantime, for the sound improvement of Korean construction industry, many stakeholders long for efficient early warning signals to generally monitor and track the potential risks of international projects. In this study, we introduce an International Project Risk Index (IPRI), which is derived from massive data provided by large-sized companies, and expect to provide the practitioners and decision makers as an aid to proactively cope with the change of the potential risks. The outcomes from the IPRI can be utilized to prepare a timely management strategy and to establish an appropriate government support regulation.

• Journal of Digestive Cancer Research
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• 제3권2호
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• pp.70-75
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• 2015

Along with the recent trend of improved survival in patients with colorectal cancer (CRC), health-related quality of life (HRQoL) has become a significant outcome measure and its improvement is an important goal. The most widely adopted CRC specific HRQoL questionnaires are the European Organization for Research and Treatment of Cancer Qualityof-Life Questionnaire (EORTC QLQ-CR38) and the Functional Assessment of Cancer Therapy (FACT-C). CRC survivors without serious comorbidity or recurrence experience only minor deficits of overall HRQoL when compared to the general population. However, disease recurrence, progression, and more specific limitations, including weight loss, reduction in energy, and psychosocial problems like psychological distress and depression, could result in lower HRQoL. To improve HRQoL, further research is required to develop appropriate health education regarding lifestyle changes and personalized intervention strategies for CRC survivors.

• 대한두개안면성형외과학회지
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• 제25권1호
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• pp.31-37
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• 2024

Orbital floor fractures are commonly encountered, but the dislocation of the eyeball into the maxillary sinus is relatively rare. When it does occur, globe dislocation can have serious consequences, including vision loss, enucleation, and orbito-ocular deformity. Immediate surgical intervention is typically attempted when possible. However, severe comorbidities and poor general health can delay necessary surgery. In this report, we present the surgical outcomes of a 70-year-old woman who received delayed treatment for traumatic eyeball dislocation into the maxillary sinus due to a subarachnoid hemorrhage and hemopneumothorax. Additionally, we propose a treatment algorithm based on our clinical experience and a review of the literature.

• Clinics in Shoulder and Elbow
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• 제26권4호
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• pp.445-454
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• 2023

The Latarjet procedure is a surgical procedure that can effectively restore glenohumeral stability, especially in patients with anterior shoulder instability and glenoid bone loss. Many studies have shown comparable clinical outcomes between patients undergoing the arthroscopic Latarjet procedure and those undergoing traditional open methods or other glenohumeral joint stabilization procedures. However, the arthroscopic Latarjet procedure is a challenging technique due to the unfamiliar portal placements, proximity of neurovascular structures, and serious postoperative complications. The arthroscopic Latarjet procedure has not yet been widely applied, and a clear understanding of the anatomical structure and the precise methods is required prior to operation performance. Satisfactory clinical outcomes can be achieved by thorough preoperative planning and proper implant fixation methods.

• Earthquakes and Structures
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• 제26권4호
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• pp.269-283
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• 2024

When a reinforced concrete (RC) structure is exposed to a corrosive environment for an extended period of time, the material qualities deteriorate, resulting in a loss in seismic performance. Engineered Cementitious Composites (ECC) have been used to reinforce the corroded RC structure, which can achieve reinforcement effectiveness for a small change in cross-section size. In this work, finite element models of unjacketed RC pier and ECC jacketed pier were established and verified by experimental tests, with the buckling effect of longitudinal reinforcement considered. Compared with the unjacketed pier, the displacement of the pier top of the ECC jacketed pier was reduced by about 9.52% under earthquake action. In the case of moderate and major earthquakes, the probability of exceedance of ECC jacketed pier is significantly reduced. For the case of rare earthquake loading, with the ECC jacket, the e of the pier experiencing serious damage and complete damage states is reduced by 10.29% and 29.78%, respectively.

• Journal of Yeungnam Medical Science
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• 제41권3호
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• pp.150-157
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• 2024

The prevalence of childhood and adolescent obesity has increased and exacerbated during the coronavirus disease 2019 pandemic, both in Korea and globally. Childhood and adolescent obesity poses significant risks for premature morbidity and mortality. The development of serious comorbidities depends not only on the duration of obesity but also on the age of onset. Obesity in children and adolescents affects almost all organ systems, including the endocrine, cardiovascular, gastrointestinal, reproductive, nervous, and immune systems. Obesity in children and adolescents affects growth, cognitive function, and psychosocial interactions during development, in addition to aggravating known adult comorbidities such as type 2 diabetes mellitus, hypertension, dyslipidemia, nonalcoholic fatty liver disease, obstructive sleep apnea, and cancer. Childhood and adolescent obesity are highly associated with increased cardiometabolic risk factors and prevalence of metabolic syndrome. The risk of cardiovascular and metabolic diseases in later life can be considerably decreased by even a small weight loss before the onset of puberty. Childhood and adolescent obesity is a disease that requires treatment and is associated with many comorbidities and disease burdens. Therefore, early detection and therapeutic intervention are crucial.

• Childhood Kidney Diseases
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• 제1권1호
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• pp.13-16
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• 1997

스테로이드에 의한 골다공증은 특히 성장하는 소아 신증후군에서 심각한 문제이다. 이러한 경우에 활성형 비타민 D원알파, 일성신약)를 1년간 투여하고 그 효과를 보기 위하여 여러가지 골대사 지표를 치료 전후에 검사하여 보았다. 대상 환자는 40명의 빈회재발형 신증후군 환아이며, 본 연구를 시작하기전까지 환자의 스테로이드 치료기간은 $50{\pm}29$ 개월 이었다. 성인에서 골형성지표로서 잘알려진 혈청 osteocalcin(ng/ml)은 치료전 $7.75{\pm}3.34$, 치료후 $9.38{\pm}5.06$으로 증가 되었고, 골 흡수 지표로 장 알려진 소변 pyridinoline(nmol/mmol Cr)은 치료전 $417.26{\pm}250.98$, 치료후 $462.59{\pm}265.15$로 증가되어 소아 에서 골대사 지표로서 유의하지 않았다. 그러나 골밀도는 $0.71{\pm}0.016$에서 $0.73{\pm}0.015$로 의미 있게 증가하였다(p<0.05). 스테로이드에 의한 골다공증때 활성형 비타민의 투여로 골다공증을 예방할 수 있을것으로 사료되며, 골 형성 및 골 흡수의 지표로서 성인에서 많이 쓰이는 검사법은 소아의 경우는 예민하지 않았으며, 골밀도 검사만이 유의한 것으로 나타났다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2021년도 춘계학술대회
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• pp.47-51
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• 2021

1. 연구배경 및 목적 정신건강과 육체건강을 놓고 이 두 가지 중에서 어떤 건강이 더 중요한지 여러 가지 의견을 놓고 있다. '건강한 육체에 건강한 정신이 깃든다'는 말도 있지만 이 역시 어느 정도는 맞는 말이다. 육체가 건강하지 못하고 망가지면 제대로 활동하기가 힘들기 때문에 의지력도 약해지고 게을러지기 쉽다. 반대로 정신적으로도 너무 충격을 받으면 육체가 상하는 경우도 있다. TV에서도 보면 충격적인 일을 겪거나 과도한 스트레스를 받으면 혈압이 오르는 경우도 있고, 심장마비까지 오는 경우를 보게 된다. 교통사고도 다친 육체적인 상처보다 사고로 인한 정신적인 충격 때문에 몸이 더 안 좋아지는 경우도 있다. 정신건강을 중요하게 생각하는 이유로 이러한 부분 때문인 것도 있지만, 살아감에 있어서 사회생활을 필요로 하기 때문에 요즘 시대에는 정신건강도 매우 중요하게 여기고 있다. 정신적으로도 너무 위축되어 버리면 할 수 있을 거 같은 일도 제대로 해내기 어렵고, 자기능력을 제대로 발휘를 못하게 되는 경우도 있기 때문이다. 이러한 것을 채우기 위해서는 자존감을 찾는 것이 매우 중요하다. 자존감이 저하되고, 자존감이 상실하게 되면 자신을 스스로 초라한 존재라고 생각하기 쉽고, 스스로가 아무것도 해낼 수 없는 존재라고 생각하게 된다. 그러한 생각들 때문에 결국 우울증으로 이어지게 된다. 우울증도 극복하지 못하고, 방치하다 보면 결국 육체에 심한 질병이 있어 아무 것도 할 수 없는 사람처럼 우울증도 아무 일도 하지 못하고, 무기력해진다. 우울증은 최악의 경우 자살과 자해까지 이어지기도 한다. 결국 정신건강이 인생의 모든 것까지 좌우한다는 걸 알 수 있다. 최근에는 일반인들도 그렇지만 연예인들도 우울증을 극복하지 못하고, 자살하는 사람도 늘어나고 있는 추세이다. 그렇기 때문에 우울증의 심각성, 자존감 상실의 심각성도 매우 중요하게 여겨지고 있다. 그래서 어떤 요소 및 원인이 자존감 상실로 이어지는지 알아보고, 연구하고자 한다. '텍스트 마이닝'이라는 기능을 통해서 분석하고자 한다. '텍스트 마이닝'이란 비정형 텍스트 데이터를 통해서 유용한 정보들을 찾아내고 통계적인 의미가 있는 개념이나 특성을 추출하고 이것들 간의 패턴이나 추세 등 정보를 끌어 오는 과정이다. 이러한 기능들을 이용하면 자존감 상실의 원인이 무엇인지 자존감 상실이 어떤 것을 가져다주는지 알 수 있을 것이다. 데이터를 수집하기 위해 먼저 키워드를 '자존감 상실', '자괴감', '모멸감', '수치심', '죄책감', '고독감'등 자존심 상실과 연관된 단어로 정하고, SNS '트위터'를 통해서 정해진 키워드를 검색하고, 검색으로 얻어진 문장들을 수집해서 단어들을 추출해서 빈도 횟수도 분석하고, 연관성 있는 단어들 끼리 묶어서 어떤 특성을 가지고 있는지도 분석하고자 한다.