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하라다병 환자에서 섬모체맥락막 삼출로 인해 발생한 양안의 급성 근시와 전방각 폐쇄 1예
김지훈,임재석,이지웅,이지은,엄부섭,Ji Hun Kim,MD,Jae Seok Lim,MD,Ji Woong Lee,MD,Ji Eun Lee,MD,PhD,Boo Sup Oum,MD,PhD 대한안과학회 2012 대한안과학회지 Vol.53 No.8
Purpose: To report a case of bilateral acute myopia and angle-closure with ciliochoroidal detachment in Vogt-Koyanagi-Harada (VKH) syndrome. Case summary: A 43-year-old Korean woman diagnosed with VKH syndrome underwent intravenous methylprednisolone steroid pulse treatment. After oral medication was given for 2 days, the anterior chambers became shallow in both eyes. Intraocular pressure (IOP) increased to 25 mm Hg in the right eye and 23 mm Hg in the left eye. Subretinal fluid increased and visual acuity decreased with myopic shift in both eyes. IOP did not decrease despite maximum tolerated medical therapy. Ultrasound biomicroscopy (UBM) revealed that ciliochoroidal effusion caused forward displacement of the lens-iris diaphragm, which resulted in anterior chamber shallowing and angle closure in both eyes. The patient was treated with cycloplegic eyedrops and intravenous steroid pulse therapy. After intravenous steroid pulse treatment was given for 2 days, the anterior chambers became deep in both eyes. IOP reduced to 13 mm Hg and 14 mm Hg in the right and left eye respectively. Visual acuity increased with normalization of myopic shift. UBM revealed that the ciliochoroidal effusion had resolved in both eyes. J Korean Ophthalmol Soc 2012;53(8):1194-1199
작업치료사의 직업윤리와 교육에 대한 인식이 직무스트레스와 직무몰입에 미치는 영향
김지훈,정재훈,Kim, Ji Hoon,Jung, Jae Hun 한국디지털정책학회 2021 디지털융복합연구 Vol.19 No.10
본 연구는 작업치료사의 직업윤리와 교육에 대한 인식이 직무스트레스와 직무몰입에 미치는 영향을 파악하기 위한 조사연구이다. 이를 위하여 작업치료사 173명을 대상으로 직업윤리와 교육에 대한 인식, 직무스트레스와 직무몰입을 평가하였으며, 본 연구의 결과는 다음과 같다. 첫째, 직업윤리와 교육에 대한 인식, 직무스트레스와 직무몰입(p<.01) 간에는 유의한 상관관계가 있었다. 둘째, 직업윤리와 교육에 대한 인식의 하위요인 중 교육경험(p<.01)과 윤리문제의 심각성(p<.05)은 직무스트레스에 영향을 미치는 것으로 나타났다. 셋째, 직업윤리와 교육에 대한 인식의 하위요인 중 교육경험(p<.05)은 직무몰입에 영향을 미치는 것으로 나타났다. 본 연구의 결과들을 통하여 직업윤리의 중요성을 인식하고, 이를 향상하기 위한 체계적인 교육이 필요할 것이다. The aimed of this research was to identify the influence of perception of the vocational ethics and education on job stress and job commitment in occupational therapists. 173 occupational therapists measure for perception of vocational ethics and education, job stress and job commitment, the findings of the study were as follows. First, perception of vocational ethics and education was correlated with job stress, job commitment(p<.01). Second, perception of vocational ethics and education sub-factor of education experience(p<.01), seriousness of ethical issues(p<.05) was found to have affected the job stress. Third, perception of vocational ethics and education sub-factor of education experience(p<.05) was found to have affected the job commitment. Through the results of this study, systematic education will be needed to recognize the importance of vocational ethics and improve it.
김지훈,조성훈,이동찬,안승민,이성현,한인기,Kim, Ji-Hoon,Cho, Seong-Hun,Lee, Dong-Chan,An, Seung-Min,Lee, Seong-Hyun,Han, In-Ki 영남수학회 2010 East Asian mathematical journal Vol.26 No.2
In this paper we study construction methods of $n^{th}$ line in triangle. Russian Mathematician Zetel suggested some construction methods of $n^{th}$ line in triangle 80 years ago. We find Zetel's papers, in detail explain the Zetel's construction methods, and suggest two elementary construction methods. Our results are received in the process of Research and Education program in science high school.
김지훈,이지항,Kim, Ji Hun,Lee, Jee Hang 한국정보처리학회 2022 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.11 No.10
Korea Trade-Investment Promotion Agency (KOTRA) annually publishes the trade data in South Korea under the guidance of the Ministry of Trade, Industry and Energy in South Korea. The trade data usually contains Gross domestic product (GDP), a custom tariff, business score, and the price of export items in previous and this year, with regards to the trading items and the countries. However, it is challenging to figure out the meaningful insight so as to predict the future price on trading items every year due to the significantly large amount of data accumulated over the several years under the limited human/computing resources. Within this context, this paper proposes a multi layer perception that can predict the future price of potential trading items in the next year by training large amounts of past year's data with a low computational and human cost. 산업통상자원부에서 제공하는 KOTRA 무역 데이터는 해당 품목과 해당 국가에 대하여 GDP, 관세율, 비즈니스 점수, 과/차년도 수출금액 등을 제공한다. 그러나 무역 수출품목은 수없이 많을뿐더러 그에 따른 대량의 데이터를 매년 수작업 기반 분석을 통해 유의미한 결과를 이끌어내는 것은 상당히 큰 시간과 비용을 요구한다. 따라서 이번 연구에선 대량의 데이터를 학습하여 단기간에 저비용으로 결과 예측이 가능한 다층 퍼셉트론 모델을 구현하고 성능을 평가하였다. 먼저 딥러닝 기반 무역 수출 가격 예측 모델을 일반적 다변량 회귀 모델과 비교하였을 때, 예측 오류와 학습 시간 측면에서 통계적으로 우수한 성능을 보였다. 수출 가격 데이터는 시계열 속성이 있을 것으로 예상하는 바, 은닉 노드들이 모두 연결된 다층 퍼셉트론과 순환 신경망을 이용하여 수출 가격 데이터를 예측하였다. 그 결과 새로운 데이터에 대해 수출 가격 예측을 위한 일반화 능력은 순환 신경망이 우수한 성능을 보였으나, 다층 퍼셉트론이 무역 수출 가격 예측에서 더 뛰어난 성능을 보였다. 추후 장기간 데이터를 확보한다면, 순환 신경망 혹은 트랜스포머 기반 딥러닝 모델을 이용하여 더 뛰어난 수출 가격 예측이 가능할 것으로 사료된다.
특발성 망막앞막에서 망막앞막 제거 시에 발생하는 망막점상출혈과 내경계막 손상
김지훈,박현준,이지은,엄부섭.Ji Hun Kim. MD. Hyun Jun Park. MD. Ji Eun Lee. MD. PhD.. Boo Sup Oum. MD. PhD. 대한안과학회 2012 대한안과학회지 Vol.53 No.6
Purpose: To evaluate the relationship between retinal dot hemorrhage that occurred during membrane peeling (MP) and the damage to the internal limiting membrane (ILM) at idiopathic epiretinal membrane (ERM). Methods: The authors of the present study retrospectively reviewed 50 eyes of 50 consecutive patients who underwent vitrectomy with MP for idiopathic ERM. For all the patients, the ILM was stained with indocyanine green following MP. ILM damage was evaluated using microscopy during the operation. Tissue was examined by light and electron microscopy. Whether or not retinal hemorrhage occurred during the MP and the location of the hemorrhage were also investigated. Results: During the MP for idiopathic ERM, ILM damage was observed in 43 (86%) of 50 eyes, and some defects of the ILM due to simultaneous removal with the ERM were observed in 37 (74%) of 50 eyes. Retinal dot hemorrhage occurred during the MP in 32 eyes (64%) and did not occur in 18 eyes (36%). In 32 eyes with retinal hemorrhage, ILM damage was observed in 30 eyes (94%). Large or small defects of the ILM due to simultaneous removal with the ERM were observed in 27 of 30 eyes, and ILM tear was observed in 3 eyes. The hemorrhage occurred in 2 eyes without gross ILM damage during the MP. Among 18 eyes without retinal hemorrhage, large or small defects of the ILM due to simultaneous removal with the ERM were observed in 10 eyes (56%). ILM tear was observed in 2 eyes, ILM detachment was observed in 1 eye, while ILM remained intact in 5 eyes (28%). The number of eyes where both ERM and ILM were peeled simultaneously was significantly higher in the cases with retinal hemorrhage (p = 0.047). Cases of hemorrhage in Gass grade 2 were statistically higher than that in Gass grade 1 (p = 0.015). OCT type of ERM did not have significant correlation with retinal hemorrhage or ILM damage during the MP. Conclusions: During the MP for idiopathic ERM, ILM damage was observed in 86% of patients, and some defects of the ILM due to simultaneous removal with ERM were observed in 74% of patients. It is highly suggestive that ILM is damaged at the hemorrhage site if retinal dot hemorrhage occurred during the MP for idiopathic ERM. J Korean Ophthalmol Soc 2012;53(6):786-791