• 한국융합학회논문지
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• 제13권5호
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• pp.333-346
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• 2022

본 연구는 충청권 지역의 새로운 발전과 도약을 위해 2027 충청 하계세계대학경기대회 공동유치의 당위성과 유치환경의 내·외적 요인에 대한 분석을 통한 유치 전략을 제시하는 데 목적이 있다. 이 같은 연구목적과 내용에 충실한 연구수행을 위하여 진단적 접근방법으로 사용하는 환경분석을 적용하였다. 결과는 다음과 같다. 첫째, 강점/기회(SO)는 최선의 전략적 활용가치를 의미하는 부합전략으로 본 연구에서 도출된 전략은 '국가 및 지역경제 활성화를 위한 충청권 4개 시도의 중·장기적 공조와 지역 스포츠 발전을 위한 스포츠·과학·산업 간의 연계 추진. 둘째, 강점/위협(ST)은 최적의 인프라 조성을 통한 지역별 균형 발전과 비대면 유치를 대비한 대회운영 전략 수립. 셋째, 약점/기회(WO)는 낙후된 스포츠시설 재정비 및 신축 전략, 융복합 스포츠관광상품의 연계 프로그램 개발, 효율적·전략적 유치활동, 베드타운 도시의 지속가능한 발전 추진. 넷째, 약점/위협(WT)은 스포츠시설 확충에 따른 지역 개발의 불균형 지속 및 부족한 문화관광 연계 콘텐츠와 관광 수요 변동의 문제 등을 제시 할 수 있다.

• International journal of advanced smart convergence
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• 제12권3호
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• pp.89-103
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• 2023

Obstructive sleep apnea (OSA) is one of the most prevalent sleep disorders that can lead to serious consequences, including hypertension and/or cardiovascular diseases, if not treated promptly. Continuous positive airway pressure (CPAP) is widely recognized as the most effective treatment for OSA, which needs the proper titration of airway pressure to achieve the most effective treatment results. However, the process of CPAP titration can be time-consuming and cumbersome. There is a growing importance in predicting personalized CPAP pressure before CPAP treatment. The primary objective of this study was to optimize the CPAP titration process for obstructive sleep apnea patients through EEG feature engineering with machine learning techniques. We aimed to identify and utilize the most critical EEG features to forecast key OSA predictive indicators, ultimately facilitating more precise and personalized CPAP treatment strategies. Here, we analyzed 126 OSA patients' PSG datasets before and after the CPAP treatment. We extracted 29 EEG features to predict the features that have high importance on the OSA prediction index which are AHI and SpO2 by applying the Shapley Additive exPlanation (SHAP) method. Through extracted EEG features, we confirmed the six EEG features that had high importance in predicting AHI and SpO2 using XGBoost, Support Vector Machine regression, and Random Forest Regression. By utilizing the predictive capabilities of EEG-derived features for AHI and SpO2, we can better understand and evaluate the condition of patients undergoing CPAP treatment. The ability to predict these key indicators accurately provides more immediate insight into the patient's sleep quality and potential disturbances. This not only ensures the efficiency of the diagnostic process but also provides more tailored and effective treatment approach. Consequently, the integration of EEG analysis into the sleep study protocol has the potential to revolutionize sleep diagnostics, offering a time-saving, and ultimately more effective evaluation for patients with sleep-related disorders.

• 대한영상의학회지
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• 제82권6호
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• pp.1581-1588
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• 2021

세계적으로 전자담배 사용의 급속한 증가와 함께 미국을 중심으로 전자담배와 관련된 사망보고들이 발생함에 따라 전자담배 관련 급성 폐 손상은 중요한 사회적 문제로 대두되었다. 이 증례 보고는 급성 호흡기 증상과 전자담배 흡연력이 있는 24세 남자 환자에서 전자담배 관련 급성 폐 손상을 진단한 국내 첫 사례이다. 흉부 CT에서 흉막하부 보존을 보이는 미만성간유리음영과 폐경화 및 중심소엽성 미세결절의 소견을 보여 전자담배 관련 폐 손상의 특징적 형태인 기질화폐렴과 미만성폐포손상에 해당하는 증례로 생각되었고, 검사실 소견에서 감염이 배제되고, 환자의 질병을 설명할 다른 원인이 없었다. 따라서, 임상 소견 및 부합하는 영상 소견으로 진단 기준을 충족하여, 다학제 진료를 통해 전자담배 관련 급성 폐 손상을 진단하였다. 이를 통해 영상의학과 의사들이 전자담배 관련 급성 폐 손상의 진단에 중요한 역할을 할 수 있을 것으로 생각된다.

• Korean Journal of Radiology
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• 제23권9호
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• pp.866-877
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• 2022

Objective: The optimal imaging approach for evaluating pathological nipple discharge remains unclear. We investigated the value of adding ductography to ultrasound (US) for evaluating pathologic nipple discharge in patients with negative mammography findings. Materials and Methods: From July 2003 to December 2018, 101 women (mean age, 46.3 ± 12.2 years; range, 23-75 years) with pathologic nipple discharge were evaluated using pre-ductography (initial) US, ductography, and post-ductography US. The imaging findings were reviewed retrospectively. The standard reference was surgery (70 patients) or > 2 years of follow-up with US (31 patients). The diagnostic performances of initial US, ductography, and post-ductography US for detecting malignancy were compared using the McNemar's test or a generalized estimating equation. Results: In total, 47 papillomas, 30 other benign lesions, seven high-risk lesions, and 17 malignant lesions were identified as underlying causes of pathologic nipple discharge. Only eight of the 17 malignancies were detected on the initial US, while the remaining nine malignancies were detected by ductography. Among the nine malignancies detected by ductography, eight were detected on post-ductography US and could be localized for US-guided intervention. The sensitivities of ductography (94.1% [16/17]) and post-ductography US (94.1% [16/17]) were significantly higher than those of initial US (47.1% [8/17]; p = 0.027 and 0.013, respectively). The negative predictive value of post-ductography US (96.9% [31/32]) was significantly higher than that of the initial US (83.3% [45/54]; p = 0.006). Specificity was significantly higher for initial US than for ductography and post-ductography US (p = 0.001 for all). Conclusion: The combined use of ductography and US has a high sensitivity for detecting malignancy in patients with pathologic nipple discharge and negative mammography. Ductography findings enable lesion localization on second-look post-ductography US, thus facilitating the selection of optimal treatment plans.

• Safety and Health at Work
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• 제15권1호
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• pp.66-72
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• 2024

Background: This study examines the relationship between functional disability and work ability in workers affected by low back pain (LBP) through an analysis of correlations between the Oswestry Disability Index (ODI) and Work Ability Index (WAI). The role of personal and work factors on functional disability/work ability levels has also been studied. LBP is the most common musculoskeletal problem and a major disabling health problem worldwide. Its etiology is multifactorial. Multidisciplinary approaches may help reduce the burden of pain and disability and improve job continuity and reintegration at work. Methods: A cohort of 264 patients affected by LBP from an Italian outpatient clinic were included in a clinical diagnostic/therapeutic trial aiming at rehabilitation and return to work through an integrated investigation protocol. Data were collected during the first medical examination using anamnestic and clinical tools. The final sample is composed of 252 patients, 57.1% man, 44.0 % blue collars, 46.4% with the high school degree, 45.6% married. Results: WAI and ODI reported a negative and fair correlation (r = -0.454; p = .000). Workers with acute LBP symptoms have a higher probability of severe disability than those with chronic LBP symptoms. White collars without depressive symptoms reported higher work ability - even in chronic disability conditions-than those with depressive symptoms. Conclusion: The study found that ODI and WAI have a convergent validity and this suggests that the two tools measure capture distinctive aspects of disability related to personal, environmental, and occupational characteristics. The most important and modifiable prognostic factors found for ODI and WAI were depressive symptoms, workday absence, and intensity of back pain. The study also found a mild association between age and ODI. The study's findings highlight the importance of using a multidisciplinary approach to manage and prevent disability due to LBP.

• 토지주택연구
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• 제15권3호
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• pp.79-95
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• 2024

지난 10년간 전국적으로 도시재생사업이 활발하게 진행되며 지역 및 공동체 활성화를 위한 공동이용시설도 대거 조성되었다. 최근 들어 공동이용시설의 지속적인 운영에 적절한 도움과 처방을 제공하기 위한 진단이 반드시 필요하다고 강조되고 있는데, 이를 위한 매뉴얼이나 전국적으로 통용할 만한 큰 방향은 여전히 부재한 상황이다. 이에 따라 본 연구는 공동이용시설의 주기적인 운영 진단에 활용할 수 있는 평가지표와 지표 활용 방안을 제안하는 것을 목적으로 하였다. 먼저, 국내 선행연구 검토를 통해 공동이용시설의 가치와 방향을 정립하고, 국내외 선행연구 및 타 공공시설 운영관리 문헌을 종합하여 후보지표를 마련하였다. 이후 간단한 전문가 자문을 통해 예비지표 및 지표체계를 결정한 후 다수의 전문가를 대상으로 설문을 진행하여 최종적인 평가지표를 도출하였다. 설문 결과, 시설 운영을 통한 '가치창출'과 실질적인 '운영관리' 점검이 진단의 중요한 두 핵심으로 여겨졌고, '가치창출' 안에서는 지역공동체 활력 증대, 지역 역량 강화, 지역 맞춤 기능 제공, 지역경제 기여, '운영관리' 안에서는 운영체계, 회계관리, 운영인력, 경제성 및 지속성이 주요 평가 항목으로 나타났다. 본 연구는 최종 결정된 평가지표와 지표별 구득 가능 자료원을 포함한 진단기준안을 제안 후 활용성 검증을 위한 시범 진단도 진행하였다. 또한, 연구는 진단기준안의 활용 방향과 함께 본 연구의 방법을 활용하여 시설별 특성에 맞는 지표를 적용하는 방안도 제안하고 있다.

• 지능정보연구
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• 제23권1호
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• pp.127-141
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• 2017

인터넷과 모바일 관련 기술의 발전과 기기의 보급은 물리적 공간의 제약을 극복하게 하고, 다양한 상품과 서비스를 소비자에게 제공함으로써, 소비자에게 선택의 폭을 넓히는 기회를 제공하는 반면, 많은 시간과 노력을 기울이고도 소비자가 자신의 기호에 적합한 품목을 선택하기 힘들어지는 부작용을 낳았다. 이에 따라, 기업은 추천 시스템을 활용하여 소비자가 원하는 품목을 더 쉽게 찾는 수단을 제공하고 있다. 상품 간의 연관성을 통계적으로 분석하는 연관 규칙 마이닝 기법은 직관적인 형태의 척도를 규칙과 함께 제공함으로써, 이로부터 도출된 규칙에 포함된 품목 간의 관계를 이해하고, 이를 추천에 적용하기 쉽다는 강점을 갖는다. 그러나, 서로 다른 규칙의 척도가 일관되게 어느 한 쪽의 규칙이 더 우위에 있음을 알려주지 못한다면, 수많은 품목 중 추천에 적합한 품목을 적절히 선별해내기 힘든 상황이 발생한다. 본 연구에서는 추천 상품의 순위를 결정할 수 있도록 연관 규칙 마이닝 기법에 회귀분석모형을 보완적으로 적용하는 방안을 제시하고자 수행되었다. 연관 규칙 마이닝에서 보편적으로 사용되고 있는 지지도, 신뢰도, 향상도를 활용하여 모형을 구현함으로써, 직관적으로 이해하기 쉬울 뿐만 아니라, 실무에서도 활용하기 쉬운 방안을 제시하고자 하였다. 국내 최대규모의 온라인 쇼핑몰의 주문 데이터를 활용한 실험을 통해, 제안된 모형으로부터 얻어진 추천 점수를 기반으로 추천상품을 결정하고, 이를 추천에 적용함으로써 추천 적중률을 향상시킬 수 있음을 보였다. 특히, 최근 모바일 상거래가 빠르게 확산됨에 따라, 제한된 화면에 한정된 수의 추천 품목을 제시해야 하는 상황에서 적합한 추천 기법임을 확인할 수 있었다.

• Asian Pacific Journal of Cancer Prevention
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• 제15권6호
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• pp.2465-2472
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• 2014

Background: The American Joint Committee on Cancer (AJCC) published a new staging system ($7^{th}$ edition) in 2009. In our study, we evaluated the survival results and prognostic factors among T4 local advanced non-small cell lung cancer (LA-NSCLC) patients in a large heterogeneous group, in accordance with this new system. Materials and Methods: We retrospectively evaluated the files of 122 T4 N0-3 M0 LA-NSCLC patients, identified according to the new staging system, treated at two centers between November 2003 and June 2012. Variables correlating with univariate survival at p<0.20 were later included in multivariate Cox regression analysis. Here, selection of relevant predictors of survival was carried out in accordance with the likelihood ratio formula with p<0.05 regarded as significant. Results: The median age was 60 and the median follow-up period was 17.4 months. Median overall survival (OS) was 18.3 months, the 1 year overall survival (OS) rate was 72%, and the 5 year OS rate was 28%. Statistically significant predictors of survival were (p<0.20) ECOG-PS (Eastern Cooperative Oncology Group Performance Status), age, T4 factor subgroup, stage and primary treatment in OS univariate analysis. On multivariate analysis for OS ECOG-PS (p=0.001), diagnostic stage (p=0.021), and primary treatment (p=0.004) were significant. In the group receiving non-curative treatment, the median OS was 11.0 months, while it was 19.0 months in the definitive RT group and 26.6 months in the curative treatment group. There was a significant difference between the non-curative group and the groups which had definitive RT and curative operations (respectively p<0.001 and p=0.001) in terms of OS, but not between the groups which had definitive RT and curative operations. The median event free survival (EFS) rate was 9.9 months, with rates of 46% and 19% at 3 and 5 years, respectively. On univariate analysis of EFS rate with ECOG-PS, weight loss and staging, statistical significance was found only for thorax computerized tomography (CT)+18F-fluorodeoxy-glucose positron emission tomography-CT (PET-CT) use, stage and primary treatment (p<0.20). In multivariate analysis with EFS, only the primary treatment was statistically significant (p=0.001). In the group receiving non-curative treatment, the median EFS was 10.5 months while in the curative operation group it was 14.7 months. When all the primary treatment groups were taken into consideration, grade III/IV side effect swas observed in 57 patients (46.6%). Esophagitis was most prominent among those that received definitive radiotherapy. Conclusions: Independent prognostic factors among these 122 heterogeneous LA-NSCLC T4 N0-3 M0 patients were age at diagnosis, ECOG-PS, stage and primary treatment, the last also being a significant prognostic indicator of EFS. Our findings point to the importance of appropriate staging and a multidisciplinary approach with modern imaging methods in this patient group. In those with T4 lesions, treatment selection and the effective use of curative potential should be the most important goal of clinical care.

• Tuberculosis and Respiratory Diseases
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• 제42권1호
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• pp.42-49
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• 1995

연구배경: 객혈환자 가운데 20~30%에서는 흉부 X-선사진에 정상소견을 보인다고 하며 이런 환자에서 기관지경검사의 필요성에 대해서는 아직까지 논란이 많다. 또한 객혈환자에서 어떤 방법의 진단적 접근이 유용할 것인지에 대해서는 정확한 지표가 없다. 방법: 1988년 10월부터 1992년 5월까지 객혈을 주소로 경북대학교병윈 호홉기내과를 방문한 환자가운데 흉부 X-선사진 및 객담검사상 이상소견이 없었던 80명을 대상으로 기관지경검사, 기관지조영술 및 고해상전산화 단층촬영 등의 검사를 시행하여 객혈의 원인과 성별, 연령, 흡연력, 출혈의 양과 빈도 등의 임상적 소견과의 관계를 조사하였다. 결과: 1) 남자는 34명, 여자는 46명이었으며 평균연령은 각각 46.7, 41.8세였다. 2) 처음 진찰시 기관지경검사로 진단된 경우는 폐암 3명(3.8%), 전이성 암 1명(1.3%) 그리고 기관지결핵 4명(5.0%)이었다. 3) 폐암의 위험인자는 연령이 50세 이상인 경우와 흡연력이 30인년 이상인 경우였고 30년이상의 흡연력이 표준화 회귀계수가 0.6138로 가장 중요한 인자였다. 4) 기관지경검사에 특이소견이 없었던 72명 가운데 기관지조영술 및 고해상전산화단층촬영상 6명에서 기관지확장증이 있었으며 이가운데 5명에서 재출혈이 있었다. 나머지 66명중 추적관찰이 가능했던 33명 가운데 5명에서 재출혈이 있었으며 이들은 기관지확장증 1명, 결핵 2명 그리고 월경과 관련이 있었던 2명이었다. 결론: 이상의 결과에서 흉부 X-선사진상 정상인 객혈환자는 연령이 50세이상이고 특히 흡연력이 30년이상인 경우는 기관지경검사를 하여 폐암에 대한 조사가 필요하며 그밖의 환자들은 반복적인 객담검사와 더불어 재출혈시에는 선택적으로 기관지조영술이나 고해상전산화단층촬영이 필요할 것으로 생각된다.

• 대한소아치과학회지
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• 제39권2호
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• pp.206-225
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• 2012

General status of pediatric dentistry in Korea is to conduct vigorous academic activities and specialized medical care centering the Korean Association of Pediatric Dentistry (KAPD) that has about 1,000 pediatric dentists as members, pediatric dentistry departments of 11 Colleges of Dentistry, numbers of pediatric dentistry training institutions and private clinics specialized in children. From 1996, the accredited pediatric dentists were produced by the KAPD and from 2008, the state began to produce the accredited pediatric dentists. Since then, doctors with expertise in pediatric care had opened private clinics in addition to the university hospitals, it became the basis of a momentum to deepen the specialty of pediatric dentistry. The Dentistry community of Korea is going through rapid and profound changes recently, and the underlying reasons for such changes can be classified largely into a few categories: (1) Decreasing population and structural changes in population (2) Increase in numbers of dentists, (3) Changes in the pattern of dental diseases and (4) Changes in medical environment. In Korea, the children population in the age range of 0 ~ 14 years old had been decreased by 2 million in 2010 compared to that of 2000 due to reduction of birth rate. The current population of children in the age range of 0 ~ 4 years old in 2010 takes up 16.2% of the total population, but it is estimated that such percentage would decrease to 8.0% by 2050. Such percentage is largely behind the estimated mean global population of 19.6% by 2050. On the other hand, the number of dentists had been largely increased from 18,000 in 2000 to 25,000 in 2010. And it is estimated that the number will be increased to 41,000 by 2030. In addition, the specialized personnel of Pediatric dentistry had been shown as increased by 2.5 times during past 10 years. For the changes in the pattern of dental diseases, including dental caries, each df rate of 5 years old children and 12 years old children had been decreased by 21.9% and 16.7% respectively in 2010 compared to 2000. Each df Index also had been decreased by 2.5 teeth and 1.2 teeth respectively. The medical expenditure of Korea is less than that of OECD and more specifically, the expenditure from the National Health Plan is less than OECD but the expenditure covered by households is larger than OECD. These facts indicate that it is considered as requiring the coverage of the national health plan to be reinforced more in the future and as such reinforcement needs continuous promotion. In medical examination pattern of Pediatric dentistry, the preventive and corrective treatment were increased whereas the restorative treatment was decreased. It is considered that such change is caused from decrease of dental caries from activation of the prevention project at national level. For the restorative treatment, the restorations in use of dental amalgam, pre-existing gold crowning and endodontic treatment had been decreased in their proportion while the restorative treatment in use of composite resin had been increased. It is considered that such changes is caused by the change of demands from patients and family or guardians as they desired more aesthetic improvement along with socio-economic growth of Korean society. Due to such changes in dentistry, the pediatric dentistry in Korea also attempts to have changes in the patterns of medical examination as follows; It tends to implement early stage treatment through early diagnosis utilizing various diagnostic tools such as FOTI or QLF. The early stage dental caries so called white spot had been included in the subjects for dental care or management and in order to do so, the medical care guidelines essentially accompanied with remineralization treatment as well as minimally invasive treatment is being generalized gradually. Also, centering the Pediatric dentists, the importance of caries risk assessment is being recognized, in addition that the management of dental caries is being changed from surgical approach to internal medicinal approach. Recently, efforts began to emerge in order to increase the target patients to be managed by dentists and to expand the application scope of Pediatric dentistry along with through such changes. The interest and activities of Pediatric dentists which had been limited to the medical examination room so far, is now being expanded externally, as they put efforts for participating in the preventive policy making process of the community or the state, and to support the political theories. And also opinions are being collected into the direction that the future- oriented strategic political tasks shall be selected and researches as well as presentations on the theoretical rationale of such tasks at the association level.