시공간 분석을 이용한 외래 의료이용의 지역적 차이 분석

신호성 ( Ho Sung Shin ),이수형 ( Sue Hyung Lee ) 한국지리정보학회 2012 한국지리정보학회지 Vol.15 No.4

본 연구는 시공간분석을 이용하여 주요 만성질환인 고혈압, 당뇨병, 관절증과 총의료이용에 있어 지역별 외래의료이용 차이를 살펴보았다. 분석자료는 보건복지부와 한국보건사회연구원에서 발간하는 1996, 1999, 2002, 2005, 2008년 환자조사 자료를 이용하였으며 분석방법으로는 베이지안 계층적 시공간모형(bayesian hierarchial spatio-temporal model)을 이용하였다. 이때 지역의 공간적 상관성은 convolution CAR 모형을, 시간적 상관성은 Ornstein-Uhlenbeck 방법을 적용하여 분석하였다. 분석결과 질환별로 의료이용에 있어 지역적 차이가 존재하였다. 총의료 이용의 경우 시·군지역보다 대도시인 구지역에서 높은 상대위험비를 보인반면, 만성질환인 고혈압, 당뇨병, 관절증은 총의료이용과는 달리 강원도, 충청남북도, 전라남북도, 제주도 등 농어촌 지역에서 전국평균보다 높은 의료이용(상대위험비)을 보였다. 특히 고혈압은 부산경남 해안가 지역과 강원, 경기, 경북, 충청남도, 전북 등에서 높은 의료이용을 보였고, 관절증은 경기, 강원 일부와 충북, 충남, 전북, 전남, 경북, 경남지역 등에서, 당뇨병은 경기, 서울, 부산, 전라남북, 충청일부 지역에서 상대적으로 높은 의료이용을 보였다. 본 연구는 기존 연구와는 달리 공간적, 시간적 상관성을 고려함으로써 지역단위 분석시 공간적, 시간적 상관성을 고려하지 않음으로써 발생하는 통계적 오류를 최소화하였다. The purpose of this study was to examine the regional disparity of ambulatory health care utilization considering spatio-temporal variation in South Korea during 1996-2008(precisely, in 1996, 1999, 2002, 2005, and 2008) using bayesian hierarchial spatio-temporal model. The spatial pattern uses an intrinsic gaussian conditional autoregressive (CAR) error component. Ornstein-Uhlenbeck method was applied to detect the temporal patterns. The results showed that substantial temporalgeographical variation depending on diseases exists in Korea. On the Contrary to the pattern of total outpatient utilizations, for example, the areas that chronic diseases distributed relatively high were most in rural where the proportion of elderly population was higher than in the urban. Chungcheongnam-do, Junlabuk-do, and Kyeongsangbuk-do had higher risks in hypertension, whereas arthritis was higher risk in the Kyeonggi-do, Chungcheongbuk-do, Junlanam-do, and Junlabuk-do. The results of this study suggested that the effective health intervention programmes needed to alleviate the regional variation of health care utilization. These outcomes also provided the foundation for further investigation of risk factors and interventions in these high-risk areas.

PSCAD/EMTDC와 FEA를 이용한 케이블 배열 방법에 따른 전류 불균형률의 비교

신호전(Ho-Jeon Shin),김지호(Ji-Ho Kim),강갑석(Gab-Suk Kang),김재철(Jae-Chul Kim),이향범(Hyang-Beom Lee) 대한전기학회 2013 전기학회논문지 P Vol.62 No.2

In this study, samples from the site where there occurred unbalanced current when cable routing were analyzed, and the simulation program for electric power system analysis, PSCAD/EMTDC, was used to calculate the current unbalance on cable routing. Based on electromagnetic finite element analysis(FEA), electromagnetic parameters enabled the interlocking with COMSOL for the calculation of allowable current ampacity and magnetic filed distribution. This then led to modeling unbalanced current between common modes using the unbalanced current analysis program, thereby comparing and discussing the results from both. The analyzed model is a common mode 2 parallel circuit, which is a basic model for cable routing, and by arranging cables in various ways, the arrangement with the least current unbalance was suggested, which would, in the future, prevent earth faults and extend life for the whole cable.

비상시 선로혼잡 해결을 위한 직접부하제어

신호성(Ho Sung Shin),김병수(Byoung Su Kim),송경빈(Kyung Bin Song),김재철(Jae Chul Kim),이학주(Hak Ju Lee),권성철(Seong Chul Kwon) 한국조명·전기설비학회 2005 한국조명·전기설비학회 학술대회논문집 Vol.2005 No.5월

Most of the electric power in the power system of South Korea is flowing from the south area to the north area, Seoul, in the capital of South Korea. Almost of the needs of the electric power in the capital area are about 43% of the total loads and generation plants are mainly located in the south area of South Korea. As mentioned the earlier characteristic, transmission congestion is one of the important research issues. Because of the limits of the power flows from the south to the north which are anticipated to be increased more and more in the future, these congestion situations may cause a serious voltage stability problem in emergency of the power system. Accordingly, we are interested in an interested load control program so as to solve this problem in emergency. This problem can be solved by an interruptible load management in emergency, however, the systematic and effective mechanism has not been presented yet. In this paper, the algerian of interruptible load management plan using the line sensitivity to the loads for the transmission congestion management in emergency is presented. The proposed method is applied to 6-Bus sample system and their results are presented.

인공지능 기반 플랜트 도면 내 심볼 객체 자동화 검출

신호진,전은미,권도경,권준석,이철진,Shin, Ho-Jin,Jeon, Eun-Mi,Kwon, Do-kyung,Kwon, Jun-Seok,Lee, Chul-Jin 한국플랜트학회 2021 플랜트 저널 Vol.17 No.3

P&ID(Piping and Instrument Diagram)는 플랜트의 장치 및 계장 정보를 집약적으로 담고 있는, 엔지니어링 핵심도면이다. 한 장의 P&ID에는 심볼로 표현된 수백 여개의 정보들이 존재하며, 이에 대한 디지털 전산화 작업이 수작업으로 진행되고 있어 많은 인력과 시간이 소요된다. 기존 연구들은 CNN 모델을 이용하여 도면 객체 검출에 성공하였으나, 도면 한 장당 약 30분, 인식률은 90% 정도로 현장에서 구현하기에는 부족한 성능이다. 따라서 본 연구에서는 영역 검출과 객체 인식을 동시에 처리하는 1-stage 객체 검출 알고리즘을 제안하였다. 이미지 레이블링 오픈소스 툴을 이용하여 학습 데이터를 구축하고 딥러닝 모델 학습을 통해 도면 내 심볼 이미지 인식 방법을 제안한다. P&ID((Piping and Instrument Diagram) is a key drawing in the engineering industry because it contains information about the units and instrumentation of the plant. Until now, simple repetitive tasks like listing symbols in P&ID drawings have been done manually, consuming lots of time and manpower. Currently, a deep learning model based on CNN(Convolutional Neural Network) is studied for drawing object detection, but the detection time is about 30 minutes and the accuracy is about 90%, indicating performance that is not sufficient to be implemented in the real word. In this study, the detection of symbols in a drawing is performed using 1-stage object detection algorithms that process both region proposal and detection. Specifically, build the training data using the image labeling tool, and show the results of recognizing the symbol in the drawing which are trained in the deep learning model.

베이지안 다층자료분석을 이용한 수도권 지역 치과병원의 규모에 관한 연구

신호성 ( Ho Sung Shin ),이정우 ( Jung Woo Lee ) 대한예방치과·구강보건학회 2005 大韓口腔保健學會誌 Vol.29 No.2

패혈증에 의한 급성 신부전의 예견인자로서의 APACHE III prognostic system과 Liano system의 유용성

신호진(Ho Jin Shin),이수봉(Soo Bong Lee),곽임수(Ihm Soo Kwak),나하연(Ha Yeon Rha),송상헌(Sang Heun Song),정현철(Hyun Chul Jung),배우형(Woo Hyung Bae),안승재(Seung Jae Ahn) 대한신장학회 2000 Kidney Research and Clinical Practice Vol.19 No.2

N/A Uncontrolled infection quite often 1eads to systemic inflammatory response syndrome and multi-organ dysfunction syndrome. Despite advances in medical knowledge and technology, the mortality of patient with sepsis is still 35-60%, and even reach up to 50-90% in septic patients having acute renal failure. The purpose of this study was to examine the characteristics and predictive factors of progression to acute renal failure(ARF) in sepsis. We analyzed the bacteriologic and laboratory data of 54 admitted patients with SIRS(systemic inflam-matory response syndrome) at Pusan National University Hospital from July 1997 to July 1999(ARF 23 vs non-ARF 31). Multiple factor which may influence mortality and progression to AEK in sepsis, were evaluated and measured on admission day. The following of results, 1) Of the 54 patients, 23 were ARF group and 31 were non-ARF group. Mean age were,52 years and 51 years. The mortality of ARF group and non-ARF group were 78% and 23%, Urine output, albumin, cholesterol, mean arterial blood pressure and evidence of underlying disease were not statistically different in each group. 2) Although the sources of sepsis could not identified in 9%(ARF), 23%(non-ARF), the others had the primary site of infections ' gastrointestinal tract(35% vs 29%), lung(30% vs 19%), genitourinary tract(9% vs 13%), skin(17% vs 16%). 3) Although statistically not different, gram-posi-tive bacterial infection was more common in ARF group(mainly staphylococcus aureus). Culture negative results were 4 patients(ARF), 1 patient(non- ARF). 4) APACHE III score in ARF group was higher than non-ARF group(48.1±16.5 vs 30.2±15.6). Liafio score in ARF group was higher than non-ARF group(39.1±13.0 vs 28.9±8.3). 5) APACHE III score and Liailo score in non- survivors were higher than survivors(APACHE III score:48.6±15.3 vs 28.1±14.0, Liaho score:37.9±12.0 vs 29.4±9.2) 6) APACHE lII system was positively correlated with Liaho system(r=0.512, p=0.001). In conclusion, APACHE III system and Liaho system were significant predictors of progression to ARF and mortality in sepsis. In the future, prospec-tive and multicenter studies are required to improve the method of treatment and the prognosis in sepsis.

유한요소해석을 이용한 동상 병렬포설시 불균형 전류 저감 방안에 대한 연구

신호전(Ho-Jeon Shin),김지호(Ji-Ho Kim),강갑석(Kab-Seok Kang),이향범(Hyang-Beom Lee),김재철(Jae-Chul Kim) 대한전기학회 2013 대한전기학회 학술대회 논문집 Vol.2013 No.10

식중독의 사회경제적 비용추정: 삶의 질 개념을 적용한 질병비용추정법을 이용하여

신호성,이수형,김종수,김진숙,한규홍,Shin, Ho-Sung,Lee, Sue-Hyung,Kim, Jong-Soo,Kim, Jin-Suk,Han, Kyu-Hong 대한예방의학회 2010 예방의학회지 Vol.43 No.4

Objectives: This study estimated the annual socioeconomic costs of food-borne disease in 2008 from a societal perspective and using a cost-of-illness method. Methods: Our model employed a comprehensive set of diagnostic disease codes to define food-borne diseases with using the Korea National Health Insurance (KNHI) reimbursement data. This study classified the food borne illness as three types of symptoms according to the severity of the illness: mild, moderate, severe. In addition to the traditional method of assessing the cost-of-illness, the study included measures to account for the lost quality of life. We estimated the cost of the lost quality of life using quality-adjusted life years and a visual analog scale. The direct cost included medical and medication costs, and the non-medical costs included transportation costs, caregiver's cost and administration costs. The lost productivity costs included lost workdays due to illness and lost earnings due to premature death. Results: The study found the estimated annual socioeconomic costs of food-borne disease in 2008 were 954.9 billion won (735.3 billion won-996.9 billion won). The medical cost was 73.4 -76.8% of the cost, the lost productivity cost was 22.6% and the cost of the lost quality of life was 26.0%. Conclusions: Most of the cost-of-illness studies are known to have underestimated the actual socioeconomic costs of the subjects, and these studies excluded many important social costs, such as the value of pain, suffering and functional disability. The study addressed the uncertainty related to estimating the socioeconomic costs of food-borne disease as well as the updated cost estimates. Our estimates could contribute to develop and evaluate policies for food-borne disease.

A Study on the Effects of Management Consulting on SMEs" Performances

Lee, Kun Woo(이건우),Shin, Ho Kyun(신호균) 한국로고스경영학회 2017 로고스경영연구 Vol.15 No.3

본 연구는 경영컨설팅이 중소제조업의 경영성과에 어떠한 영향을 미치는지 실증적으로 분석하였다. 경영컨설팅과 경영성과간의 영향을 분석하기 위해 컨설팅 서비스를 받은 회사와 받지 않은 회사를 주 대상으로 하였다. 연구의 분석결과, 수요자 측면에서는 고객사의 지지도, 공급자 측면에서는 컨설턴트의 전문성 그리고 컨설팅 서비스품질이 경영성과에 긍정적인 영향을 미치는 것으로 나타났으며, 컨설팅 서비스를 받은 기업(40개사)과 일반 중소제조업(120개사)의 3년간의 재무적인 자료를 비교, 분석한 결과 컨설팅 서비스를 받은 기업의 영업이익률은 4.50%로 일반중소제조업 영업이익률 2.97%보다 51% 높게 나타났다. 본 연구의 시사점으로는 첫째, 컨설팅관련 고객지원의 지속적인 유지와 서비스 품질과 전문성을 높이기 위한 적절한 도구와 방법론을 활용하는 문제 그리고 경영성과는 개인, 조직 및 기타 외부 요인의 영향을 받기 때문에 비즈니스 성장 및 수익성을 높이기 위한 단기적인 관점보다는 장기적인 관점에서 컨설팅 서비스를 제공해야 한다는 것이다. The purpose of this study is to empirically analyze the effects of management consulting on the performance of SMEs. We hypothesized regarding the interaction between management consulting and performance. For indisputable outcomes, we distinguished between companies that received consulting services and those that did not. The results showed that on the demand side, client support is positively related to the management performance. Likewise, on the supply side, consultant professionalism and service quality positively affected the overall management performance. Additional analysis was conducted to compare the 3-year financial data of the consulting, where the operating income rate of 40 companies that received consulting services was 4.50%, 51% higher than the operating income rate (2.97%) of general 120 SMEs that did not receive the service. First, this study implies that it is important to continuously sustain client support. Second, the consultant needs to keep appropriate tools and methodologies for enhancing service quality and professionalism. Third, since performance is affected by the capacity of individuals, organizations, and other external factors, consulting services should be presented in a long-term oriented perspective rather than a short-term perspective to increase business growth and profitability.

3축 직교 로봇을 이용한 3차원 도립진자 시스템의 퍼지 제어

신호선(Shin Ho Sun),추준욱(Chu Jun Uk),이연정(Lee Yun Jung) 제어로봇시스템학회 2001 제어로봇시스템학회 국제학술대회 논문집 Vol.2001 No.10