An analysis of the perceptions of dental implant plans in the Korean national health insurance and the dental clinic selection criteria among elderly patients in Hongseong-gun, Chungcheongnam-do

한민수,권은자,최에스더,Han, Min Soo,Kwon, Eun Ja,Choi, Esther Korean Academy of Dental Technology 2021 대한치과기공학회지 Vol.43 No.3

Purpose: This study aimed to investigate the perception of dental implant insurance supply and demand for the elderly living in Hongseong-gun and Chungcheongnam-do, as well as the selection criteria regarding dental clinics for dental implant treatment to collect basic data for improving the oral health of the elderly population. Methods: Participants living in Hongseong-gun, Chungcheongnam-do who were at least 55 years old from November 2020 to March 2021 were included in this study. The chi-square test was performed to examine the age-specific perception of insurance-covered dental implants (p<0.05). Results: The age group that was the most interested in implants was the 70s age group, and the difference between this age group and the other age groups was statistically significant. Those in their 70's, 80's, and 90's or older paid about 600,000 won including dental implants covered by insurance, and there was a significant difference (p<0.05). Those in their 60s, 70s, and 80s estimated the highest value of implants covered by insurance as two and showed a significant difference (p<0.05). The awareness of the dental implant insurance by age showed that all age groups, except for the ≥90 years age group, considered the insurance to be mediocre mostly due to the large co-payment (p<0.05). Conclusion: There were differences by age in the awareness of dental implant insurance, co-payments, number of applications, and insurance coverage. The perceptions on dental implant insurance by age showed that all age groups except for those over 90 years and older, they considered the insurance was just mediocre the most.

의치상용 열중합 레진의 Curing방법에 따른 파절 강도의 비교실험연구

한민수,Han, Min-Soo 대한치과기공학회 2002 대한치과기공학회지 Vol.23 No.2

For this study, self curing resin and heat curing resin used for existing usual resin denture base in the denture industry were chosen by manufacturer. Curing tests for 30-minute, I-hour, 2-hour and 3-hour were conducted to know the strength of the resins and conduct analysis to get other necessary information. The results obtained are as follows: 1. Heat curing resins show a little differences among the manufacturers. However 30-minute curing resin shows great difference as shown in the fracture strength test. 2. The effect from the granularity of the resins on the fracture strength was found insignificant which means there is no difference between coherence and strength. 3. To summarize the results from each time level, the longer the time is, the more the minute cracks on the surface, which is the cause of reduced strength. From this test, it was identified that in making the denture base for patients in dental clinics, 30-minute curing is most efficient and effective in reducing discoloration and monomers, although long-time curing has been considered to be the principal.

양측폐에 발생한 종괴

한민수,강홍모,유지홍,Han, Min-Soo,Kang, Hong-Mo,Yoo, Jee-Hong 대한결핵및호흡기학회 1998 Tuberculosis and Respiratory Diseases Vol.45 No.1

A 64-year-old male was admitted due to weight loss of 5kg during a month. Chest X-ray showed two large, lobulated masses on both lower lobe. Chest CT showed ill-defined, multilobulated mass on left lower lobe and irregular, relatively homogenous mass with air-bronchogram on right lower lobe. Left lower lobectomy and right lower lobectomy was performed sequentially with three months interval. Microscopic findings showed squamous cell carcinoma of both mass. It was thought that this patient had synchronous double primary lung cancer.

복강경 복막외 접근 탈장교정술과 Perfix<SUP>®</SUP>를 이용한 무긴장 탈장교정술의 비교

한민수(Min Soo Han),이상목(Sang Mok Lee),최성일(Sung Il Choi),주선형(Sun Hyung Joo),홍성화(Sung Wha Hong) 대한외과학회 2009 Annals of Surgical Treatment and Research(ASRT) Vol.77 No.3

Purpose: Tension-free open repair for inguinal hernia is a safe and popular operation with a high success rate, but laparoscopic techniques are fairly recent. Comparing the tension-free herniorrhaphy using mesh and plug (Perfix<SUP>®</SUP>) with laparoscopic totally extraperitoneal (TEP) hernia repair is the aim of this study. Methods: We compared two groups of patients in which 39 patients with inguinal hernias were treated by tension-free repair using Perfix<SUP>®</SUP> (group P) and 39 patients were treated by laparoscopic TEP repair (group T). Information about operation time, length of hospital stay, use of analgesics (pain), recurrence, complications, cosmetic satisfaction, medical costs, and time until return to work were evaluated retrospectively. Results: Mean operation time, postoperative hospital stay, and the time until return to work were 101±33 min, 1.9±1.0 days, 11±8 days in group T, 86±28 min, 2.0±0.8 days, 12±10 days in group P. Postoperative complications, medical costs and the cosmetic satisfaction were 20.5%, 821,048 won, 94% (32/24) in group T, 7.7%, 692,149 won, 79% (19/24) in group P. There was difference between the two groups but not significant statistically. Group P used more analgesics than group T, significantly (P<0.05). There was only 1 recurrence in group T. Conclusion: Although we need more experience in patients with inguinal hernias, laparoscopic TEP repair may be a secure and feasible procedure compared to tension-free repair using Perfix<SUP>®</SUP>.

Recurrent Neural Networks를 활용한 Baltic Dry Index (BDI) 예측

한민수(Min Soo Han),유성진(Song Jin Yu) 한국항해항만학회 2017 한국항해항만학회 학술대회논문집 Vol.2017 No.추계

장기 해운불황에 따라 불확실성이 증폭되고 있는 상황에서 경기추세의 이해뿐만 아니라 예측 또한 중요해지고 있는 실정이다. 본 논문에서는 최근 특정 복잡한 문제에 대해서 각광받고 있는 인공신경망을 적용하여 BDI 예측을 연구하였다. 사용된 인공신경망은 순환신경망으로 RNN과 LSTM 그리고 비교의 목적으로 MLP를 통해 2009.04.01.부터 2017.07.31.의 기간을 대상으로 연구를 진행하였다. 또한 전통적 시계열 예측방법론인 ARIMA 분석을 실시해 인공신경망들의 예측성능과 비교하였다. 결과로 순환신경망인 RNN의 성능이 가장 뛰어났으며 LSTM의 특정 시계열(BDI)에의 적용가능성을 확인할 수 있었다. Not only growth of importance to understanding economic trends, but also the prediction to overcome the uncertainty is coming up for long-term maritime recession. This paper discussed about the prediction of BDI with artificial neural networks (ANN). ANN is one of emerging applications that can be the finest solution to the knotty problems that may not easy to achieve by humankind. Proposed a prediction by implementing neural networks that have recurrent architecture which are a Recurrent Neural Network (RNN) and Long Short-Term Memory (LSTM). And for the reason of comparison, trained Multi Layer Perceptron (MLP) from 2009.04.01 to 2017.07.31. Also made a comparison with conventional statistics, prediction tools; ARIMA. As a result, recurrent net, especially RNN outperformed and also could discover the applicability of LSTM to specific time-series (BDI).

지대치 변연 형태에 따른 수작업과 CAD/CAM으로 제작한 coping 패턴의 적합도 비교

한민수(Han, Min-Soo),권은자(Kwon, Eun-Ja),최에스더(Choi, Esther),김시철(Kim, Si-chul) 한국산학기술학회 2015 한국산학기술학회논문지 Vol.16 No.10

본 연구는 수작업으로 제작된 metal coping과 CAD/CAM(Computer Aided Design/Computer Aided Manufacturing)으로 제작된 지르코니아 coping을 제작하여 변연과 내면 적합도를 비교 분석하고자 하였다. 모형은 우레탄 모형재를 사용하여 knife, chamfer변연 두 종류의 지대치를 제작하였다. 수작업과 CAD/CAM으로 제작된 보철물의 변연 적합도를 실리콘 리플리 카 테크닉방법을 사용하여 측정하였다. 적합도 측정은 현미경의 CCD카메라로 캡쳐하였다. 이때 지대치와 보철물의 거리는 이미지분석 소프트웨어에서 거리 조정이 된 상태에서 실시하였다. 측정부위는 marginal opening을 MO, marginal gap을 MG, internal gap을 IG, Axial gap을 AG, occlusal gap을 OG로 하였다. 제작법과 변연 형태에 따른 비교분석을 위해 이원배치분산 분석을 실시하였으며 서로 다른 평균값들의 비교 분석을 위해서 일원배치분산분석과 Scheffe's 사후 검정을 실시하였다. 그 결과 CAD/CAM의 OG와 knife 변연의 MO을 제외하고는 <120 μm 적합도를 나타냈다. CAD/CAM으로 제작된 coping은 chamfer 변연 MO에서 높은 적합도를 보였으나 MG에서는 knife변연이 chamfer변연 보다 더 좋은 적합도를 보였다. AG의 내면 적합도는 가장 좋은 값을 나타내었다(<38 μm). The purpose of this study is to compare the marginal and internal fit of metal and zirconia coping which is fabricated by manual and CAD/CAM(Computer Aided Design/Computer Aided Manufacturing). The model is prepared with Urethane material and two abutment teeth are fabricated with a knife and chamfer margin. Silicon replica technique is used to measure the marginal fit of manually fabricated and the CAD/CAM coping. Internal fitting level is measured with a microscope and the image is captured with a CCD camera. The distance between abutment teeth and coping is measured with a callibrated image analyzer software; marginal opening (MO), marginal gap (MG), internal gap (IG) at maximum curvature area, axial gap (AG), and occlusal gap (OG). Two-way ANOVA test is applied to compare fabrication technique and to analysis of abutment pattern. In addition, one-way ANOVA and Scheffe's test is used to analyze each parameter of the test. The result shows that the fit is <120 μm except OG of CAD/CAM and MO of knife margin. The CAD/CAM fabricated coping showed higher fit level at chamfer margin. However, knife margin showed better fitness compared to chamfer margin at MG. AG showed the minimum dimension with a constant result (<38 μm).

치과기공사의 개인역량이 조직몰입에 미치는 영향

한민수(Han, Min-Soo),권은자(Kwon, Eun-Ja),이주연(Lee, Ju-Yeon) 한국산학기술학회 2013 한국산학기술학회논문지 Vol.14 No.6

본 연구는 치과기공사의 개인역량과 조직몰입 정도를 분석하고 그 상관관계를 알아보기 위해 서울시, 경기 도, 충남지역의 치과기공사 200명을 선정하고 자기 기입식 설문지를 이용하여 2012년 4월 28일부터 5월 25일까지 조사를 실시하였다. 연구도구는 신뢰성과 타당성이 입증된 설문지를 사용하였으며, 대상자의 일반적 특성, 개인역량, 조직몰입도 등 총 46문항으로 작성하였다. 수집된 자료의 분석은 SPSS ver 18.0 프로그램을 이용하였으며, 분석기법 으로는 빈도와 백분율, T-test, F-test 등의 통계기법을 사용하여 분석하였다. 수집된 자료의 분석결과 연구대상자의 개인역량은 연령, 결혼상태, 근무지, 경력, 담당직위, 최종학력 항목에서 유의한 차이가 있었다(p<0.05). 개인역량 평 균은 3.68로 높게 나타났다. 연구대상자의 조직몰입 정도를 분석한 결과 성별, 연령, 결혼상태, 근무지, 경력, 담당직 위, 최종학력 항목에서 유의한 차이가 있었으며(p<0.05), 조직몰입도의 평균은 3.46으로 높게 나타났다. 개인역량과 조직몰입도의 상관관계는 높은 정(+)상관관계를 보였고, 대부분의 변수가 상관관계가 있는 것으로 나타났다. 이상의 결과를 종합할 때, 치과기공사의 개인역량은 직무성과인 조직몰입과 관련이 있는 것을 알 수 있었다. The purpose of this study was to analyze dental technician's individual competency and organizational commitment level and to examine its correlation. 200 dental technicians in Seoul, Incheon, and Chunchungnamdo area were selected. Survey was carried out from April 28, 2012 to May 25, 2012 by using self-administered questionnaire. As for the tools for this study, the structured questionnaire was used with its proven reliability and feasibility, and the contents of questionnaire consisted of 46 questions on the basis of related references. The subjects completed questionnaire regarding general characteristics, individual competency and organizational commitment. The data analysis was processed by computerized system with SPSS 18.0. Statistical analysis techniques included frequency, percentage, T-test, F-test analysis and regression analysis. As a result of analyzing the research subjects’ individual competency level, there was significant difference in the item of age, marital status, residence area, carrier, job position, education(P<0.05). The average in the individual competency was indicated to be high with 3.68. As a result of analyzing the research subjects’ organizational commitment level, there was difference in the item of gender, age, marital status, residence area, carrier, job position, education(P<0.05). The average of organizational commitment was indicated to be high with 3.46. Correlation between individual competency and organizational commitment, most of variables were indicated to have correlation, thereby having been shown that the more individual competency leads to the more organizational commitment.

홍삼가루, 수분 및 당 첨가량에 따른 인절미의 품질특성

한민수(Han, Min-Soo),최에스더(Choi, Esther),김미환(Kim, Mi-Hwan) 한국산학기술학회 2010 한국산학기술학회논문지 Vol.11 No.11

본 연구의 목적은 홍삼 분말(0, 5, 10 %), 물(12, 16, 20 %), 설탕(4, 8, 12 %)의 첨가량을 달리하여 최적의 배합비를 찾기위하여 실시하였다. 인절미 제조에 있어서 수분 첨가량이 증가할수록 생균수는 증가하였다. 홍삼가루 첨가에 따른 생균수는 5% 첨가군에서는 유의적인 차이가 없었지만 10% 첨가군에서는 생균수가 감소하였다. 홍삼 첨 가량에 따른 굳기의 변화는 홍삼 무첨가군은 수분첨가량 20%를 제외한 실험군에서 24 hr이후에 급격한 증가를 나타 내었다. 그러나 홍삼 5% 첨가군에서는 수분 및 설탕 첨가량에 상관없이 굳기의 변화가 거의 나타나지 않았다. 또한 홍삼 10% 첨가군에서도 수분 첨가량 12% 이외에는 굳기의 변화가 거의 나타나지 않았다. 관능검사에서 홍삼 첨가 10%군은 홍삼 특유의 향미와 맛이 너무 강한 것으로 나타났으나, 홍삼 첨가 5%군은 향, 맛, 색이 적당한 것으로 나 타났다. 생균수 측정, 조직감 측정과 관능검사의 결과에서 홍삼인절미의 최적의 배합비는 찹쌀가루에 대해 홍삼가루, 수분, 설탕이 각각 5, 16, 8%로 나타났으며 홍삼가루 첨가는 인절미의 저장성 향상효과가 있었다. The purpose of this study is to find out the optimal mixing ratios of three different amount of red ginseng powder(0, 5, 10%), water(12, 16, 20%) and sugar(4, 8, 12%) per weight of glutinous rice powder. The microbial count increased with increasing moisture content. The microbial count has decreased in 10% addition group though the microbial count according to the red ginseng powder addition did not have a difference the having mind in 5% addition group. Control group(the red ginseng powder no addition) showed an exponential increase in the change in hardness according to the amount of the red ginseng powder addition 24 hours after(except the moisture addition amount 20%). However, the change in devotion hardly appeared without the relation in moisture and the amount of the sugar addition in the addition group of the red ginseng powder 5%. Moreover, the change in hardness besides the moisture addition amount 12% hardly appeared also in the addition group of the red ginseng powder 10%. It has been understood that the red ginseng powder addition 5% crowd smells, and the taste and the color are suitable though it was clarified to the red ginseng powder addition 10% crowd that a peculiar smell taste and taste to the red ginseng are very strong by the sensory inspection. In conclusion, according to its microbial count, texture and sensory analyses, the optimal Injulmi formulation consisted of red ginseng powder, water and sugar were 5, 16 and 8%. The results suggested that red ginseng powder is effective in increasing the self life of Injulmi.

간암환자에서 간동맥색전술후 발생한 담도괴사를 동반한 간농양

한민수(Min Soo Han),김준식(Joon Sik Kim),김병호(Byung Ho Kim),동석호(Seok Ho Dong),김효종(Hyo Jong Kim),장영운(Young Woon Chang),이정일(Jung Il Lee),장린(Rin Chang) 대한소화기학회 1996 대한소화기학회지 Vol.28 No.1

Hepatocellular carcinoma is a common neoplasm with an extremely poor prognosis. L.Jnfortunately, hepatocellular carcinomas are often not detected until they become unresectable. The resectability of the patients with symptomatic hepatocellular carcinoma is less than 10%. Transcatheter hepatic arterial embolization(TAE) is now accepted as a treatment of unresectable hepatocellular carcinoma. However, aside from its therapeutic effect, complications or untoward side effects also occur during of following TAE. The side effects of TAE include hepatic failure, liver abscess, splenic infarction, pancreatic and gastric infarction and cholecystitis or gallbladder gangrene. Bile duct necrosis, septicemia and renal failure are rarely reported. We report a case of liver abscess combined with bile duct necrosis after TAE in a patient with hepatocellular carcinoma.

비정합 불확실성이 존재하는 시스템의 등가 입력 외란 추정을 이용한 제어기 설계

한민수(Min Soo Han),김인혁(In Hyuk Kim),손영익(Young Ik Son) 대한전기학회 2015 정보 및 제어 심포지엄 논문집 Vol.2015 No.10