서비스 지향 구조 기반 LMS

채명훈,김강식,정인범 江原大學校 産業技術硏究所 2010 産業技術硏究 Vol.30 No.A

In legacy e-learning web service, as deployed contents are changed, web services should be changed together. In addition, it can not coordinate and manage the various e-learning services recently emerged. In this paper, an e-learning platform based on Service-Oriented Architecture (SOA) is proposed to solve these problems. We design and implement an e-learning system based on Service abstraction layer concepts. The implemented system can provide the new e-learning services within short development periods.

림프종으로 오인된 회장 말단부의 살모넬라 감염증

채명훈,김문영,박소연,조미연,정요셉,차승환,이진형,권용환 대한소화기내시경학회 2009 Clinical Endoscopy Vol.39 No.6

Salmonella usually invades the Peyer’s patch of the terminal ileum or ascending colon. A 55-year old female was referred to our hospital for general weakness and sustained fever. On the abdominal contrast computed tomography (CT) scan, we found symmetric circular hypertrophy of the intestinal wall and multiple hypertrophied lymph nodes in the terminal ileum. The positron emission tomography computed tomography (PET-CT) scan showed skipped areas of wall thickening and intense fluorodeoxyglucose (FDG) uptake in the terminal ileum and the ileocecal valve with adjacent lymphadenopathies. On the colonoscopy, multiple mass forming variable-sized ulcers on the terminal ileum were found, so a biopsy specimen and the colonic luminal fluid were obtained, and we made a diagnosis of lymphoma. However, the blood and colonic luminal fluid culture for Salmonella paratyphi-A was reported as positive, and therefore we corrected the diagnosis to Salmonella infection. We report here on a case of Salmonella infection in the terminal ileum, which looked like malignant lymphoma on the baseline radiologic image studies, including the CT and PET-CT. 저자들은 최근 발열과 선혈변을 주소로 내원한 환자의 영상학적 검사(복부 CT 및 PET-CT)에서 회장 말단부 및 회-결장 장간막 림프절 종대를 보여 림프종으로 판단하였으나, 회장 점막 조직 검사 및 장간막 림프절에 대한 조직검사에서 단순한 궤양과 염증 소견만을 보였고, 대장내시경 검사 및 혈액 배양 검사, 장관액 배양 검사를 통해 살모넬라 감염증으로 확인된 1예를 경험하였다. 일반적으로 살모넬라 감염증은 회장 말단부에 염증을 일으켜 주위 림프절의 부종과 궤양을 일으킬 수 있으나 이와 같이 림프종으로 오인될 정도의 다발성 림프절 종대와 PET-CT에서 fluorodeoxyglucose (FDG)의 섭취를 보인 이전의 증례가 없기에 문헌 고찰과 함께 보고한다.

리튬독성으로 동시 발생한 상지 다발성 말초신경병증 및 신성요붕증 1예

채명훈,박재형,황태현,고규용,김진철,김창환,주우철,송준호,김문재,이승우 순천향의학연구소 2013 Journal of Soonchunhyang Medical Science Vol.19 No.2

Lithium is the drug of choice for treating bipolar affective disorders. However, it has a narrow therapeutic index and acute and chronic toxicity can occur in patients with chronic ingestion. Chronic toxicity commonly presents as nephrogenic diabetes insipidus or thyroid dysfunction. Neurologic symptoms such as apathy, hyperreflexia, or clonus can also occur in acute toxicity. However, it rarely causes peripheral neuropathy. We experienced a case of lithium-induced peripheral polyneuropathy who had already nephrogenic diabetes insipidus and chronic kidney disease during 25 years of lithium ingestion due to bipolar disorder.

.NET Framework를 이용한 SOA 기반 LMS

채명훈 ( Myunghun Chae ),김정래 ( Jeong-rae Kim ),박총명 ( Chong-myung Park ),정인범 ( In-bum Jung ) 한국정보처리학회 2009 한국정보처리학회 학술대회논문집 Vol.16 No.2

다양한 정보의 흐름과 함께 빠르게 변화해가는 웹 환경에서 사용자들의 다양한 요구 사항을 만족시키기 위해서는 이러닝 시스템 또한 그에 발맞추어 빠르고 유연한 기능 확장이 필요하다. 하지만 기존의 웹 어플리케이션 구현 방식은 이에 대한 해답이 되지 못한다. 본 논문에서는 이러한 문제를 해결하기 서비스 기반 구조 기법을 사용하여 다양한 사용자 요구사항을 쉽게 서비스 할 수 있는 LMS 모델을 설계 및 구현하였다.

무선 센서 네트워크 기반의 덤벨 컬 운동 분석시스템

채명훈(Myung Hun Chae),정인범(In Bum Jung) 한국정보과학회 2012 정보과학회 컴퓨팅의 실제 논문지 Vol.18 No.1

최근 다이어트와 체형 관리를 위해 운동을 하는 사람들이 늘어나면서 운동 보조를 목적으로 하는 u-Wellness 시스템들이 연구 및 개발되고 있다. 하지만 기존의 u-Wellness 시스템들은 걷기, 달리 기, 자전거 타기 같은 야외 운동에만 집중되어 있으며 다른 실내 운동에 대한 연구는 전무한 실정이다. 본 논문에서는 무선 센서 네트워크를 기반으로 기본적인 웨이트 운동 중 하나인 덤벨 컬의 동작 횟수와 에너지 소비량을 측정할 수 있는 시스템을 구현 하였다. 제안된 시스템에서는 덤벨 컬의 회전 움직임 정보를 3축 가속도 센서를 통해 각도 값으로 변환한다. 그리고 각도 값들에 영교차(Zero-Crossing)와 문턱치(Threshold) 알고리즘을 적용하여 덤벨 컬의 총 동작 횟수를 측정 한다. 에너지 소비량은 측정된 덤벨 컬의 동작 회수와 회전운동 속도를 이용하여 산출 한다. 다수를 대상으로 한 실험 데이터를 통해 제안된 덤벨 컬 횟수 측정 알고리즘의 인식률을 평가하였다. Recently, many people are interested in physical exercises to manage their body-build and to achieve diet effect for body. For this purpose, u-Wellness systems are introduced based on intelligent sensor systems. However, the existing u-Wellness systems only focus on the outdoor exercises like walking, running, and bi-cycling. The u-Wellness system study for indoor exercises exploiting sensor systems is not enough. In this paper, Based on the wireless sensor networks, an exercise monitoring system is implemented for the dumbbell curl among weight-training. It measures the number of dumbbell curl action and the amount of energy expenditure during the exercising time. With triaxial accelerometer sensors. the proposed system transforms the rotation information of dumbbell curl into three angle data. As the proposed system applies the zero-crossing and threshold algorithm with the angle data, it calculates the total number of dumbbell curl actions. We estimate amount of energy expenditure based on the measured dumbbell curl number and rotation velocity. With the experimental data of multiple participators, we evaluate the cognition rate of dumbbell curl analysis algorithm.

증례 : 감염; Staphylococcus lugdenensis에 의한 요근 농양 1예

채명훈 ( Myoung Hun Chae ),주호연 ( Ho Yeon Joo ),이현정 ( Hyun Jung Lee ),김진철 ( Jin Chul Kim ),백지현 ( Ji Hyeon Baek ),임재형 ( Jae Hyoung Im ),이진수 ( Jin Soo Lee ) 대한내과학회 2014 대한내과학회지 Vol.86 No.3

Staphylococcus lugdunensis is a member of coagulase-negative staphylococci (CoNS), an uncommon microbial culture isolate with virulent potency. Although CoNS are common skin commensals, and often regarded as contaminants or colonizers when isolated from clinical specimen cultures, the clinical course and microbiological characteristics of Staphylococcus lugdunensis may resemble those of Staphylococcus aureus rather than other CoNS. Invasive infectious diseases such as infective endocarditis, peritonitis, skin and soft tissue infection, vascular prosthetic infection, septicemia, and osteomyelitis have been found to be associated with Staphylococcus lugdunensis. Here we report the first case of psoas abscess caused by methicillin-sensitive Staphylococcus lugdunensis in Korea.

Psoas abscess caused by Staphylococcus Lugdunensis : first case report in Korea

나소연,채명훈,백지현,이진수,정문현 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.-

A Case of Gastric Cancer Manifesting as a Solitary Brain Metastasis in the Cerebellopontine Angle That Mimicked Acoustic Neuroma

주호연,채명훈,임주한,이현규,이문희,김철수,박영훈 전남대학교 의과학연구소 2013 전남의대학술지 Vol.49 No.3

At the time of diagnosis, about 20% of patients with gastric cancer have stage IV disease involving the liver, lung, and bone. Brain metastasis from gastric cancer is exceedingly rare, with an incidence of <1% of clinical cases. A 59-year-old man was admitted with hearing loss in the left ear and left facial palsy for 1 month. A magnetic resonance imaging scan revealed a tumor in the cerebellopontine angle that extended to the inner auditory canal and that was clinically diagnosed as acoustic neuroma. After complete resection,histological examination showed metastatic poorly differentiated carcinoma. Further investigation revealed advanced gastric cancer involving the antrum with no evidence of the involvement of other sites except the brain parenchyma. Palliative total gastrectomy was performed and the surgical specimen revealed a poorly cohesive carcinoma that was histopathologically identical to that of the resected brain tumor. Here we report this rare case of gastric cancer that initially presented as a solitary brain metastasis mimicking acoustic neuroma.

P&ID의 파이프라인 인식 향상을 위한 라인 검출 개선에 관한 연구

오상진,채명훈,이현,이영환,정은경,이현식,Oh, Sangjin,Chae, Myeonghoon,Lee, Hyun,Lee, Younghwan,Jeong, Eunkyung,Lee, Hyunsik 한국플랜트학회 2020 플랜트 저널 Vol.16 No.4

For several decades, productivity in construction industry has been regressed and it is inevitable to improve productivity for major EPC players. One of challenges to achieve this goal is automatically extracting information from imaged drawings. Although computer vision technique has been advanced rapidly, it is still a problem to detect pipe lines in a drawing. Earlier works for line detection have problems that detected line elements be broken into small pieces and accuracy of detection is not enough for engineers. Thus, we adopted Contour and Hough Transform algorithm and reinforced these to improve detection results. First, Contour algorithm is used with Ramer Douglas Peucker algorithm(RDP). Weakness of contour algorithm is that some blank spaces are occasionally found in the middle of lines and RDP covers them around 17%. Second, HEC Hough Transform algorithm, we propose on this paper, is improved version of Hough Transform. It adopted iteration of Hough Transform and merged detected lines by conventional Hough Transform based on Euclidean Distance. As a result, performance of Our proposed method improved by 30% than previous.

Psoas abscess caused by Staphylococcus lugdunensis: first case report in Korea

나소연,채명훈,백지현,이진수,정문현 대한내과학회 2011 대한내과학회 추계학술대회 Vol.2011 No.1

Staphylococcus lugdunensis is a member of coagulase-negative staphylococci (CoNS) which is uncommon microbial culture isolate with virulent potency. Despite CoNS are usual skin commensals and often regarded as contaminant or colonizer when isolated from cultures of clinical specimens, clinical course and microbiological characteristics of Staphylococcus lugdunensis may resemble those of Staphylococcus aureus rather than other CoNS. Invasive infectious diseases such as infective endocarditis, peritonitis, skin and soft tissue infection, vascular prosthetic infection,septicemia, osteomyelitis have been described to be associated with Staphylococcus lugdunensis. We report the first case of psoas abscess caused by Staphylococcus lugdunensis in Korea. A 45-year old woman presented to a community hospital with fever and right flank pain. On admission date, her body temperature was 37.8℃, laboratory test revealed white blood cell count of 18950 cells/μl (90.7% neutrophils), ESR of 77 mm/hr, CRP of 22.86 mg/dl. Abdomen-pelvic CT scan was obtained, which illuminated 12x5cm sized right-sided psoas abscess. Percutaneous abscess drainage was performed and culture from the drained fluid isolated oxacillin-sensitive Staphylococcus lugdunensis. Initial antimicrobial therapy, intravenous ceftriaxone plus metronidazole, was maintained for 15 days. Defervescence and normalization of leukocytosis and CRP level was achieved, and the patient was placed on oral ciprofloxacin. After 9 days of administration of oral ciprofloxacin, patient was transferred to a tertiary teaching hospital due to prolonged treatment and for further management. Cefazolin was administrated intravenously. On 26th day of total antibiotics therapy, interval reduction of size of abscess was noted on CT. The patient was discharged for outpatient follow-up with oral ciprofloxacin and rifampicin in consideration of antibiotic sensitivity and tissue penetration. To our best knowledge, this is the very first case report of Staphylococcus lugdunensis psoas abscess in Korea.