기침과 인후부 불편감을 주소로 하는 코로나 19 후유증 환자에 대한 보험한약 치료 1례

유창환 대한한의학회 2022 대한한의학회지 Vol.43 No.3

Objectives: The purpose of this case study was to report the clinical improvement of Long COVID(cough, sore throat) treated with Korean herbal medicine(Hyunggaeyungyo-tang and Saengmaek-san). Methods: To assess the treatment outcomes, I used the Visual analogue scale(VAS) to evaluate sore throat degree, and Leicester Cough Questionnaire Korean version(LCQ-K). Results: After treatments, cough and sore throat were significantly improved with VAS and LCQ-K. Conclusion: The Korean herbal medicine was effective in the treatment of patient who suffers Long COVID. This study suggested the possibility of Korean herbal medicine treatment for Long COVID.

Synovial Sarcoma of the Thyroid Gland

유창환,조경자,최승호 대한이비인후과학회 2011 Clinical and Experimental Otorhinolaryngology Vol.4 No.4

Primary synovial sarcoma of the thyroid is an extremely rare condition which has only been reported twice in the literature. We herein report a case of highly aggressive and rapidly lethal primary synovial sarcoma of the thyroid. A 72-year-old woman presented with extensive local invasion, rapid progression, and early distant metastasis secondary to primary thyroid synovial sarcoma. The tumor exhibited an atypical histologic and immunohistochemical staining pattern. Detection of SYT/SSX fusion transcript confirmed the diagnosis of synovial sarcoma. Due to the aggressive nature of primary synovial sarcoma of the thyroid gland, early diagnosis and comprehensive treatment including wide resection and postoperative chemoradiation is required.

중국 수출용 쌀의 선택속성에 관한 만족도-중요도 분석

유창환 한국산학기술학회 2022 한국산학기술학회논문지 Vol.23 No.6

It is noteworthy that Korean rice exports to China (which is geographically close) became possible in 2016 when the export market was in full swing due to a continuous decrease in domestic rice consumption and an increase in inventories. Korean rice exports were targeted at 148 consumers living in Xian in Northwest China who needed an external food supply due to one of the smallest cultivated acreages for crops among the seven regions in China that had less than its relative share of food production in the previous 10 years. Importance-Performance Analysis (IPA) was conducted concurrently with a taste test to find the importance of, and satisfaction with, the selection attributes of Korean rice (Chucheong). First, the rice consumption pattern in Xian is as follows. The average number of rice purchases per month was 1.23, the average amount of rice purchased at one time was 7.74 kg, and the cost was RMB 57.02 (10,264 Korean won). On average, 93 respondents (62.8%) and 44 respondents (29.8%) consumed rice once or twice a day. The main places to purchase rice were hypermarkets (48.6%) and supermarkets (25.3%), with local consumers preferring more transparency than normal as well as medium-sticky rice. The 148 Xian respondents had mainly purchased rice imported from Thailand (long-grain rice easily purchased) and from Japan (perceived as high-quality rice). However, other respondents who did not purchase imported rice cited lack of information and expensive price as the reasons. From analyzing the importance of, and satisfaction with, the Korean Chucheong variety, the locals showed that, at first, the factors should be maintaining the current status due to high importance and satisfaction (quadrant 1), which were the aroma of the steamed rice and its taste. Second, there were no factors with high importance but low satisfaction (quadrant 2) in rice consumption. Third, factors that could be lower in priority (quadrant 3) due to both low importance and low satisfaction were rice odor and transparency. Finally, under low importance but high satisfaction, the factors to be heavily managed (quadrant 4) were stickiness and uniformity. Next, by comparing absolute and relative satisfaction after consuming Chinese and Korean rice, absolute satisfaction was evaluated as being higher than relative satisfaction for transparency and uniformity in the rice. Factors such as smell, aroma of the steamed rice, taste, and stickiness were rated a a high relative satisfaction level, indicating that the competitiveness of the Korean rice was higher than Chinese rice. 본 연구는 우리나라 쌀 소비량의 지속적인 감소로 인한 재고량 증가 대응책으로 수출시장 개척이 대두되고 있던 시점에서 2016년 지리적으로 인접한 대중국 쌀 수출이 가능하게 된 것에 주목할 필요가 있다. 한국산 쌀 수출을 위해 중국 7개 권역 중 식량작물 재배면적이 작고 최근 10년간 식량 생산 상대 점유율이 1 미만으로 외부에서의 식량 공급이 필요한 중국 서북권역(서안) 소비자(148명)를 대상으로 한국산 쌀(추청)의 선택속성에 대한 중요도와 만족도를 알아보기 위해 식미 테스트를 병행한 IPA(Importance-Performance Analysis) 분석을 수행하였다. 먼저 조사 소비자의 쌀 소비패턴을 살펴보면 월평균 쌀 구매 횟수 1.23회, 1회 평균 쌀 구매량은 7.74kg, 구매금액은 57.02(10,264원)위안이며, 일일 평균 쌀 섭취 횟수는 ‘1회’ 응답자 93명(62.8%), ‘2회’ 44명(29.8%)으로 비중이 높았다. 쌀 구매장소는 ‘대형마트’(48.6%)와 ‘슈퍼마켓’(25.3%) 순으로 나타났고 현지 소비자 쌀 선호 특징으로는 투명도가 ‘보통 이상’, ‘중간 찰기의 밥’을 선호하는 것으로 조사되었다. 서안 지역 응답자 148명 중 수입산 쌀 구매 경험으로는 손쉽게 구입할 수 있는 장립종 쌀인 태국산과 고품질 쌀로 인식하고 있는 일본산으로 나타났으며, 구매 경험이 없는 응답자의 비구매 의사는 ‘정보 부족’과 ‘비싼 가격’에 대한 응답이 많았다. 현지인 대상으로 한국산 ‘추청’ 품종에 대한 중요도와 만족도 분석 결과 서안 지역소비자의 쌀 소비에 있어 첫째, 중요도와 만족도가 모두 높아 지속적으로 관리되어야 할 요인(1사분면)은 ‘밥 냄새’(4), ‘맛’(5)이며, 둘째, 쌀 소비에서 중요도는 높지만, 만족도가 낮은 요인(2사분면)은 없었다. 셋째, 중요도와 만족도가 모두 낮아 우선순위를 낮추어도 좋은 요인(3사분면)은 ‘쌀 냄새’(3), ‘투명도’(1)이며, 마지막으로 중요도가 낮고 만족도가 높아 과잉 관리가 개선되어야 할 요인(4사분면)은 ‘찰기’(6), ‘균일성’(2)으로 나타났다. 자국산 쌀과 한국산 쌀을 섭취한 후의 절대적·상대적 만족도를 비교한 결과 ‘투명도’, ‘균일성’에서는 상대적 만족도 보다 절대적 만족도가 더 높게 평가되었고 ‘쌀 냄새’, ‘밥 냄새’, ‘맛’, ‘찰기’에서는 상대적 만족도가 높게 나타난 것으로 보아 중국산 대비 한국산 쌀의 경쟁력이 더 높은 것으로 나타났다.

등골 머리가 보존된 경우에서의 이소골 재건술의 술 후 성적

유창환,윤태현,김태수,안중호,김종양 대한이비인후과학회 2008 대한이비인후과학회지 두경부외과학 Vol.51 No.3

Incus erosion with intact stapes head was most common ossicular impairment in chronic otitis media. Here, we aimed to investigate hearing and clinical results of the ossiculoplasties when the stapes head was intact. Subjects and Method:We analyzed 281 patients of ossiculoplasties over stapes head performed from 1990 to 2005. Patients were divided into 3 groups:Si group (n=121) included patients with interposition of prosthesis between malleus and stapes; Sc-PORP group (n=99) included patients with columellarization between tympanic membrane and stapes head with PORP; Sc-SC group (n=61) included patients with columellarization with the autologous materials between tympanic membrane and stapes head. Hearing improvement and extrusion rates of three groups were analyzed. Results:At 6 months after the surgery, the postoperative air-bone gap (ABG) level within 20 dB was 45%, 44%, 25% in Si, Sc-PORP, Sc-Sc, respectively. The closure of ABG was statistically better in Si and Sc-PORP compared with Sc-SC. In canal wall-up mastoidectomy, Sc-PORP showed better hearing results than Si, while Si was better than Sc-PORP in canal wall-down mastoidectomy. At 36 months after the surgery, extrusion-free survival according to the type of ossiculoplasty were 100%, 89.6%, 100% in Si, Sc-PORP, Sc-SC, respectively. Conclusion:Si and Sc-PORP provide good hearing results. However, Si has lower extrusion rates than Sc-PORP and remains stable over time. (Korean J Otorhinolaryngol-Head Neck Surg 2008;51:221-6)

소규모 철근콘크리트 건축물을 위한 비선형해석 프로그램 비교 II

유창환,김태완,박홍근 한국지진공학회 2015 한국지진공학회논문집 Vol.19 No.5

For small-size reinforce-concrete buildings, Midas Gen, OpenSees, and Perform-3D, which are structural analysis programs that are most popularly used at present, were applied for nonlinear static pushover analysis, and then difference between those programs was analyzed. Example buildings were limited to 2-story frames with irregular shaped walls. Analysis result showed that there were more differences than for frames only and frames with rectangular walls, but it was not so significant. Nevertheless, the capacity curve were different in some buildings, which is attributed to shape and location of walls, and feature of the analysis program. Especially, selection of automatic or manual input in Midas Gen, or nonlinear wall elements in Perform3D can affect the capacity curve and performance of the buildings. Therefore, the program users should understand the feature of the program well, and then conduct performance assessment. The result of this study is limited to low-story buildings so that it should be noted that it is possible to get different results for mid- to high-rise buildings.

소규모 철근콘크리트 건축물을 위한 비선형해석 프로그램 비교 I

유창환,김태완 한국지진공학회 2015 한국지진공학회논문집 Vol.19 No.5

For small-size reinforce-concrete buildings, Midas Gen, OpenSees, and Perform-3D, which are structural analysis programs that are most popularly used at present, were applied for nonlinear static pushover analysis, and then difference between those programs was analyzed. Example buildings were limited to 2-story frames only and frames with one or more rectangular walls. Analysis results showed that there was not much difference for frames only based on capacity curves. There were some differences for frames with rectangular walls, but it was not so significant. The global behaviors represented by the capacity curve were not so different, but the feature of each analysis program appeared when the results were analyzed in more detail. Therefore, the program users should understand the feature of the program well, and then conduct performance assessment. The result of this study is limited to low-story frames only and frames with rectangular walls so that it should be noted that it is possible to get different results for frames with non-rectangular walls or mid- to high-rise buildings.

Development and Evaluation of a Korean Version of a Thyroid-Specific Quality-of-Life Questionnaire Scale in Thyroid Cancer Patients

유창환,박보람,류준선,조성애,이유진,이은경,황보율,주정남,정유석 대한암학회 2018 Cancer Research and Treatment Vol.50 No.2

Purpose The purpose of this study was to develop a Korean version of the self-reported thyroid-specific quality of life (QoL) questionnaire for thyroid cancer patients (KT-QoL), and to evaluate its reliability and validity. Materials and Methods Two hundred seventy-two patients who underwent thyroidectomy from January to December 2010 were recruited in this study. The original version of the thyroid QoL was translated into Korean and evaluated for its reliability and validity. Using the developed KT-QoL, the postoperative QoL was evaluated until postoperative 1 year. Results At the preoperative baseline, the item internal consistency (IIC) ranged from 0.19 to 0.76, with low IIC values for items 2, 17, and 27. Item discriminant validity ranged from 86% to 97%. These values were similar at the postoperative periods. The internal consistency reliability (Cronbach’s ) was high for all dimensions, ranging from 0.90 to 0.95. The test-retest reliability (intraclass correlation coefficient) was acceptable (0.74-0.82). The external validity examined by the correlation between the item 1j (voice changes) of KT-QoL and the voice handicap index-30 ranged from 0.51 to 0.75. Patients’ QoL scores decreased after surgery, which demonstrated the sensitivity of the questionnaire. The QoL scores in patients with lobectomy showed best QoL scores postoperatively and those with receiving radioactive iodine still showed decreased QoL scores along the postoperative periods. Conclusion These results demonstrate that KT-QoL is a valid instrument for evaluating QoL of Korean patients with thyroid cancer.

중부식 김치의 선택 속성에 관한 중요도-만족도 분석

유창환 한국산학기술학회 2024 한국산학기술학회논문지 Vol.25 No.2

In this study, we conduct a taste evaluation of kimchi from central Korean regions that has a high market share to identify consumer preferences, and we conducted an importance-performance analysis (IPA) to determine the importance of, and satisfaction with, selection attributes that might increase product sales. The IPA matrix revealed four quadrants. Factors in the first quadrant, such as hygiene/safety/certification, taste, smell, and texture, were highly important and satisfying to consumers, and should be consistently managed. Factors in the second quadrant, such as price, were considered highly important but had a lower satisfaction level, indicating an area for improvement. Factors in the third quadrant, including manufacturer name/brand, showed low importance but high satisfaction, suggesting they may be de-prioritized. Factors in the fourth quadrant (e.g., packaging units and packaging/design) were given low importance and earned low satisfaction, indicating areas that need improvement. Absolute satisfaction after consuming central-region kimchi compared with satisfaction from previous kimchi purchases showed that manufacturer name/brand and packaging/design received higher absolute satisfaction ratings. On the other hand, price, packaging units, hygiene/safety/certification, taste, smell, and texture received higher relative satisfaction ratings, indicating that the central region kimchi intended for taste testing possesses a competitive advantage over previously purchased kimchi.

한약 복용이 제 2형 당뇨 환자의 혈당 변화에 미치는 영향 : 후항적 차트 리뷰

유창환,강성우,홍성은,김관일,정희재,이범준 대한한방내과학회 2020 大韓韓方內科學會誌 Vol.41 No.6

Objective: This study was conducted to evaluate the effect of herbal medicine on blood glucose in diabetic patients. Methods: The subjects were patients with diabetes mellitus (DM) who had been admitted to Kyung Hee University Korean Medicine Hospital for more than 8 weeks for a primary diagnosis other than DM and who had taken herbal medicine for more than 8 weeks from January 2010 to February 2020. The medical records were analyzed retrospectively to confirm the characteristics of the subjects, and examination results included hemoglobin A1c (HbA1c), total cholesterol, triglyceride, low-density lipoprotein cholesterol (LDL), high-density lipoprotein cholesterol (HDL), aspartate aminotransferase (AST), alanine aminotransferase (ALT), blood urea nitrogen (BUN), and creatinine. Changes in HbA1c before and after taking herbal medicine and changes according to subgroups were analyzed. Results: A total of 149 subjects with type 2 DM were selected as participants. After taking the herbal medicine, the HbA1c value was significantly decreased, and the statistical significance was maintained even when the effect of controlling antidiabetic agents was excluded. The decrease in HbA1c was higher in the poor glycemic control group. Liver and kidney functions did not show any significant changes after taking the herbal medicine. Conclusions: Administration of herbal medicine for a long period of 8 weeks or longer did not increase HbA1c in patients with DM complicated by other various diseases.

텍스트마이닝을 활용한 전통 장류 언론자료 분석

유창환,이병서 한국산학기술학회 2022 한국산학기술학회논문지 Vol.23 No.12

In this study, we examined 1,130 newspaper reports related to traditional pastes among traditional foods during a 68 months duration (Jan 2017 to Aug 2022) to analyze keywords and extract core words from the articles. The top 10 keywords referring to traditional sauces were extracted, depending on their frequency of appearance and weightage in these articles. The keywords were analyzed to examine the characteristics of the newspaper articles reporting traditional sauces. The association between the 10 keywords was subsequently quantified and graphically visualized using the association analysis. Results revealed that the largest group formed contained the keyword 'traditional pastes', with Sunchang-gun, Cheonggukjang, and excellence as the major sub-hubs. This indicates that amongst the various factors discussed, articles on traditional sauces focus more on Sunchang-gun, Cheonggukjang, and excellence. The next analysis extracted keywords from 628 newspaper articles, excluding duplicated ones. Primary keywords were selected based on the region, item, and adjective of traditional sauces. The major keywords determined were Sunchang-gun, Gangjin-gun, and middle school. Thus, we inferred that regional keywords are well-associated with the supporting policy of local governments, and there are differences in keyword trends when considering all articles and excluding duplicated articles. This study is significant in that text mining is used to analyze the press data instead of applying direct analysis prevalently used. Contrary to conventional research, this is an experimental study wherein text mining is applied to calculate text statistics, followed by combining with association analysis to identify the article contents in the form of keywords and uncover characteristic messages. In summary, we determined that the articles related to traditional pastes focus on region-specific support and promotion projects rather than on the sauce industry or cultural values. Although newspaper articles tend to concentrate on social issues with the property of the newspaper considered, it is necessary to continuously share and publicize the cultural values, historicity, and development plan of the sauces. 본 연구에서는 2017년부터 2022년 8월까지 5년 8개월간 보도된 전통 장류 관련 신문기사 1,130건을 수집하고해당 기사들에서 핵심 키워드를 추출하여 분석하였다. 우선 1,130건의 기사에서 출현 빈도 및 가중치가 높은 전통 장류 관련 상위 10개 핵심 키워드를 도출하였다. 도출된키워드를 분석하여 현재까지 전통 장류 관련 신문 기사의 특징을 살펴보고 도출된 10개 키워드 간 관계를 연관분석기법으로 수치화 및 시각화하였다. 분석 결과 ‘전통 장류’ 키워드를 가장 큰 허브로, ‘순창군’, ‘청국장’과 ‘우수성’을 하위허브로 키워드 그룹이 형성되는 구조였다. 이는 전통 장류 관련 기사는 다양한 주제 중에서 ‘순창군’, ‘청국장’ 및 ‘우수성’이 중심임을 보여준다. 다음으로 중복 기사를 제외한 628건 신문 기사 내 핵심 키워드를 추출하는 분석을 하였다. 주요 키워드는 전통 장류의지역, 품목, 형용사에 관련된 키워드들이 추출되었다. 중복 기사를 제외한 주요 키워드는 순창군, 강진군, 중학교가 상위에 있었다. 지역 키워드는 주로 지자체의 정책 지원과 연관되었음을 유추할 수 있으며, 전통 장류의 전체 기사와 중복기사를 제외한 키워드의 우선순위는 차이점이 있는 것으로 나타났다. 본 연구는 신문 기사를 직접 분석하는 기존의 방법에서 벗어나 텍스트마이닝 기법을 활용하여 텍스트 데이터를 분석하였다는 데 의의가 있다. 기존 내용분석 방법과 달리 텍스트마이닝을 사용하여 텍스트 통계량을 계산하고 이를 연관분석기법과 연계함으로써 기사의 내용을 키워드 형태로 파악하고 특징적인 메시지를 도출한 실험적인 연구이다. 분석을 통해나타난 결과를 요약하면, 전통 장류 관련 기사는 특정 지역 중심의 추진사업에 주목하고 있어 전통 장류의 문화적 가치와 역사성, 산업발전 방안 등을 대중과 공유하려는 노력이 필요하다고 판단된다.