• 한국전산유체공학회:학술대회논문집
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• 2002.05a
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• pp.17-22
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• 2002

This paper describes numerical research on transverse jet behind rearward-facing step in turbulent supersonic flowfields without chemical reaction. The purpose of transverse jet behind rearward-facing step is to improve mixing of the fuel in the combustor. Two-dimensional unsteady flowfields generated by slot injection into supersonic flow are numerically simulated by integration of Navier-Stokes equation. Final-scale turbulence effects are modeled with two-equation $\kappa-\epsilon$ model. Numerical methods are modeled high-order upwind TVDschemes. A total of 4 cases are computed, comprising slot momentum flux ratios at four step heights downstream of the step. These numerical results are represented periodic phenomenon in unsteady flowfields.

• Proceedings of the KOR-BRONCHOESO Conference
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• 1996.04a
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• pp.85-85
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• 1996

경부기도의 종양은 편평상피암과 함께 이비인후과의에게 있어서 호흡곤란 환자의 감별진단을 위해 매우 중요한 임상적 의미를 갖는다. 종양은 암종에 의한 사망률의 0.1%이하를 차지하는 드문 질환이며 선양낭성암종은 기도의 원발성 종양중 두 번째로 많은 질환이다. 갑상선종양의 기도의 직접적인 침범이 흔히 발견되는 상태이며, 그다음으로 편평상피암, 선양낭성암종이 기도의 원발성 종양으로 흔한 질환이다. 갑상선의 악성종양이 기도의 벽이나 내강을 침입하는 것과 마찬가지로, 기도의 원발성 악성종양도 흔히 갑상선을 침범하여 갑상선의 종괴처럼 발현할 수 있다. 본 연구는 이와 같이 갑상선의 악성종양과 유사한 임상경과를 보이는 기도의 선양낭성암종의 향후 감별진단을 위해 4명의 조직학적으로 증명된 갑상선을 침범하는 기도의 선양낭성암종환자의 임상기록과 전산화 단층촬영소견을 후향적으로 관찰하였다. 전산화 단층촬영에서 이들은 기도에 넓은 기저부를 가지고 갑상선을 밀고있는 균일한 음영의 일반적으로 부드러운 경계를 가지는 종괴로 보였으며, 횡단면과 두정면에서 모두 기도 벽의 비후소견을 보였다. 이러한 소견은 기도의 원발성 선양낭성암종의 감별에 도움이 될 것으로 생각된다.

• Annual Conference of KIPS
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• 2000.04a
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• pp.528-531
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• 2000

이 논문에서는 시스템의 라우팅 구성 장애를 진단하기 위한 규칙과 알고리즘을 제시하였다. 라우팅 구성 장애 관리를 위하여 네트워크 구성 관리 규칙, 라우팅 구성 장애 진단 규칙을 제안하였으며 후향 추론 알고리즘을 기반으로 이런 규칙간의 상호 연동을 위하여 메타 규칙을 적용하였다. 제안한 규칙과 알고리즘을 시나리오에 기반하여 규칙, Blackboard, 목표의 변화 과정을 보여줌으로써 실험 결과를 제시하였다. 시스템의 TCP/IP 네트워크 구성 관리와 관련하여 시스템에서 발생할 수 있는 네트워크 장애들 중에서 라우팅 구성 장애를 진단하기 위한 규칙 및 추론 알고리즘을 제안함으로써 이질적이고 급변하는 네트워크 환경에 쉽게 대처할 수 있는 시스템 개발을 위한 방법론을 제시하고자 한다

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.28 no.3
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• pp.88-100
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• 2015

Objectives : This study was designed to assess the effect of Soyangin Medicines on Soyangin chronic urticaria patients by retrospective methods.Methods : We treated 37 Soyangin chronic urticaria patients who visited Haneulmaeum Korean Medicine Clinic from September 1st 2011 to June 30th 2014. We administrated the Soyangin patients with Soyangin Medicines such as Hyeongbangsabaek-san(荊防瀉白散), Yanggyeoksanwha-tang(凉膈散火湯) and so on for 3 months. We measured the effect biweekly by using Urticaria Activity Score(UAS). We analyzed the information and medical history of patients by Frequency analysis, and UAS by Repeated measures, ANOVA.Results & Conclusions : Every items of UAS were improved by Soyangin Medicines. And the improvement was statistically significant(p<0.05).

• Journal of Acupuncture Research
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• v.21 no.6
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• pp.195-207
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• 2004

목적 : 경추통에 대한 침구치료의 효과여부가 현재까지 시행된 무작위 대조군 시험의 검토에서 논란이 되고 있는데, 경추통에 대한 치료 효과의 검증에 최근 들어 경추 전만각도의 변화를 측정하는 것이 점차 많이 사용되고 있는 실정이다. 하지만 아직까지 변형된 형태의 경추 견인 등 몇몇 요소들이 경추전만을 변화시켰다는 보고는 있었으나, 침치료 중 深刺의 방법이 경추의 만곡을 변화시켰다는 보고는 없었다. 방법 : 자침의 방법 중 深刻(五刺法 중 合谷刺 또는 關刺)방법이 경추 전만의 변화를 주는가에 대하여 검증하기 위하여 심자 치료를 시행한 19명의 실험군과 치료를 시행하지 않고 단순히 방사선 촬영만 시행한 21명의 대조군의 단순 방사선 사진을 후향적 연구의 방법으로 비교하였으며, 아울러 심자 자침군에서는 VAS를 측정하여 통증의 정도의 변화를 함께 연구하였다. 결과 : 연구결과 자침을 시행하지 않은 대조군에서는 VAS와 경추 전만의 Cobb각도에서 유의성 있는 변화가 나타나지 않았으나, 심자의 방법으로 자침한 군에서는 치료 전후의 VAS가 유의한 차이를 나타내었고, 경추의 전만 각도에서도 경추 2번과 7번 사이의 Cobb의 각도에서 유의성 있는 변화를 나타내었다(p < 0.05). 결론 : 이러한 연구 결과들은 심자의 자침방법이 경주의 통증을 줄여줄 뿐만 아니라 경추의 구조적 변화를 일으킬 수 있음을 나타내 주는 것이다.

• Journal of the korean academy of Pediatric Dentistry
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• v.44 no.2
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• pp.194-199
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• 2017

This study investigated the prognosis of luxation injuries in primary teeth treated with splinting. This study retrospectively analyzed 92 children with luxation injuries to their primary teeth who were treated with splints between 2010 and 2015. Prognoses were analyzed in patients who had been followed for more than 6 months. The prognoses with splinting were based on clinical and radiographic evaluations performed during the follow-up examinations. The mean patient age was 42.1 months, and 67.4% were male. The most common cause of luxation injury was falling, and the mean splint duration was 2.4 weeks. The success rate of splinting was 58.9%. The highest rate of success was achieved following subluxation, while repositioning and splinting of lateral luxation had the lowest rate of success. Pulp necrosis was the most common unfavorable prognosis in the luxation injuries. Depending upon the type of luxation, splint therapy had acceptable prognoses and might be a feasible treatment option.

• Journal of the korean academy of Pediatric Dentistry
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• v.44 no.2
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• pp.188-193
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• 2017

Natal teeth that are already present at birth and neonatal teeth that erupt shortly after birth may cause various complications. The purpose of this study is to evaluate the characteristics of natal/neonatal teeth in Korean infants who visited to Kyung Hee University Dental Hospital from 2006 to 2015. A retrospective review of clinical data, including the sex of the patients, chief complaints of the mothers, clinical appearances and locations of the natal/neonatal teeth, and associated complications and treatments, was collected. Overall, a total of 75 teeth were found in 48 patients and 69% of the infants had natal teeth, while 31% had neonatal teeth, all of which were mandibular incisors. Females showed more natal/neonatal teeth than males. Major reasons for visiting the dental clinic were parental anxiety, referrals from other clinics, Riga-Fede disease, and pain during breastfeeding. Extraction was the most common treatment choice; observation and grinding were also used.

• The korean journal of orthodontics
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• v.29 no.2 s.73
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• pp.147-156
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• 1999

Skeletal Cl III malocclusion is an orthopedic appliance mainly used for growing children with maxillary undergrowth, which largely entails skeletal Cl III malocclusion. It improves anterior crossbite and maxillary position and thus, enables patients to attain favorable Profile but often involves unfavorable profile with protrusive upper and lower lips. Therefore, if orthodontists have knowledge of which condition helps obtain favorable occlusion and profile, they are able to predict the prognosis and limitation of the treatment. This study was done in order to help obtain favorable Profile after treating growing skeletal Cl III children. In the study, we classified childern into two groups, the one with favorable profile(Group 1, n=12) and the other with unfavorable profile(Group 2, n=14) and, with retrospective study using pre- and post-treatment lateral cephalogram, drew the following conclusions. 1. As patients had more serious labioversion of upper incisors, they were more unlikely to have favorable profiles after the treatment. Protrusion of prosthion, which was related with maxillary incisors, also affected profiles. 2. As the NL-ML angle before the treatment was small, it was more likely to get favorable profile. 3. As the degree of lower lip protrusion was high, it was likely to have bialveolar protrusion after the treatment. 4. As the degree of downward and backward rotation of mandible was high, it was likely to get unfavorable profile.

• Pediatric Infection and Vaccine
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• v.21 no.3
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• pp.167-173
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• 2014

Purpose: This study aimed to examine the changes in the outbreak of acute gastroenteritis, rotavirus gastroenteritis after the introduction of the rotavirus vaccine in Korea. Methods: The current study investigated the number of inpatients in the pediatric ward of Inje University Sanggye Paik Hospital during the periods of 2005-2006 and 2011-2012. A retrospective analysis was conducted on the medical records of 2,840 patients <5 years of age who were hospitalized at Inje University Sanggye Paik Hospital in these time periods. Results: When we compared 2 separate sets of data from before (2005-2006) and after (2011-2012) vaccine introduction, there were statistically significant decreases in the number of patients who were hospitalized for acute gastroenteritis across all of the groups of patients <5 years of age except those <2 months of age. The number of patients with rotavirus gastroenteritis in all age groups declined except for children <2 months of age and those 2-5 months of age. Conclusion: These results show that after the introduction of a rotavirus vaccine in Korea, the incidence of rotavirus gastroenteritis decreased in 6-59-month-old patients hospitalized for acute gastroenteritis.

• Anxiety and mood
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• v.10 no.1
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• pp.11-16
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• 2014

Objective : Despite the high prevalence and clinical importance of panic disorder, studies on the clinical characteristics and course of panic disorder are relatively rare. This study is a multi-center, and retrospective study to examine the clinical characteristics and course of Korean panic disorder patients who visit university hospital. Methods : The study subjects were panic disorder patients who had visited the psychiatric outpatient clinics of 8 university hospitals in South Korea from January to December in 2008. Finally, 238 panic patients were included in this study. Their medical charts were retrospectively reviewed and reassessed by experienced psychiatrists to examine their clinical characteristics, demographic data and clinical course in repose to pharmacotherapy. Results : Among the 238 patients (121 males vs. 117 females), the mean age of disease onset was $41.3{\pm}12.7$ years and female patients showed 5 years older age of disease onset, compared with male patients. The mean score of PSR scale was $4.5{\pm}1.0$ at the first visit, reflecting a 'marked' level of severity of illness and impairment in functioning. Only 110 patients (46.4%) completed the whole follow up visits, whereas 128 patients (53.6%) dropped out during the treatment. After $17.7{\pm}0.5$ months of mean follow up period, the mean score of PSR scale at the last visit was reduced into $2.1{\pm}0.9$, reflecting a 'residual' severity of illness and impairment in functioning. The cumulative recovery rate was 62.1% in the completer group, whereas that of the drop-out group was 47.7%. Conclusions : The mean age of disease onset in Korean panic disorder patients who had visited university hospital was about 10 years older than that of Western panic disorder patients in previous studies, and the Korean panic disorder patients who had visited university hospital showed a relatively higher cumulative recovery rate. These differences might result from an ethnic difference in clinical characteristics and course in response to pharmacotherapy of panic disorder.