소아 안면열상 환자의 치료에 있어서 유용한 봉합술

김준형,권순범,어수락,조상헌,Kim, Jun-Hyung,Kwon, Soon-Beom,Eo, Su-Rak,Cho, Sang-Hun,Markowitz, Bernard L. 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.4

Purpose: Lacerations requiring formal wound closure compose a significant number of all childhood injuries presenting to the emergency department. The problem with conventional suture technique are that suture removal is quite cumbersome, especially in children. Unwanted soft tissue damage can result in the process of suture removal, which calls for sedation, stressful for both medical personnel and child. The purpose of this study is to introduce the convenient suture technique for pediatric facial lacerations. Methods: Children under the age of four, presenting to the emergency department with facial lacerations were enrolled in the study. From March 2008 to June 2009, 63 patients (41 males and 22 females) with an average age of 1.4 years were treated with our convenient suture technique using utilized a loop suspended above a double, flat tie. Clean, tension free wounds were treated with our technique, wounds with significant skin defect and concomitant fractures were excluded. Results: The Patients were followed-up in 1, 3 and 5 days postoperatively. On the third hospital visit, suture removal was done by simply cutting the loop suspended above the wound margin and gently pulling the thread with forceps. There were no significant differences in the rates of infection and dehiscence compared with conventional suture technique. Conclusion: The use of our technique was to be simple with similar operative time compared with conventional suture technique. Removal of suture materials were easy without unwanted injuries to the surrounding tissue which resulted in less discomfort for the patient and greater parental satisfaction, minimized the complications. It can be considered as a viable alternative in the repair of pediatric facial lacerations.

심부하복벽 천공지 유리피판을 이용한 즉시 유방재건술

김준형,박지웅,조상헌,어수락,Kim, Jun-Hyung,Park, Ji-Ung,Cho, Sang-Hun,Eo, Su-Rak 대한미세수술학회 2008 Archives of reconstructive microsurgery Vol.17 No.2

In the past decade, there has been increasing breast reconstructions after mastectomy, and the abdomen has been the gold standard for donor site. TRAM (transverse rectus abdominis myocutaneous), MSTRAM (muscle sparing transverse rectus abdominis myocutaneous), DIEP (deep inferior epigastric artery perforator), SIEA (superficial inferior epigastric artery) flap has been widely used nowadays. Among them, DIEP free flap spares the whole rectus abdominis muscle and anterior rectus sheath resulting in decreased donor site morbidity. Between March of 2006 and February of 2008, six patients had undergone immediate breast reconstructions using DIEP free flap. The mean age of patients was 48.5 years. All patients had unilateral breast reconstructions. We dissected two perforators which were included in the unilateral pedicle. Thoracodorsal artery and its venae comitantes were chosen as recipient vessels. For venous anastomosis, we used the GEM Microvascular Anastomotic Coupler System (Synovis Micro Companies Alliance, Inc., Birmingham, Ala.) in four cases. All flaps were survived completely except one who showed fatty abdomen in old age. She showed repetitive vascular spasm intraoperatively. None of the patients had abdominal hernia, bulge or weakness. We believe that DIEP free flap provides a reliable method for autologous breast reconstruction if the patients are selected appropriately and performed by a skillful surgeon.

비중격 골절을 동반한 단순 비골 골절의 치료에 있어 비중격 교정술의 중요성: 비강 통기도 검사를 이용한 평가

김준형,신동우,최태현,손대구,한기환,Kim, Jun-Hyung,Shin, Dong-Woo,Choi, Tae-Hyun,Son, Dae-Gu,Han, Ki-Hwan 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: Nasal bone fractures are often classified as minor injury. However, the incidence of posttraumatic nasal deformity remains alarmingly high. It is because of unnoticed septal fracture. This study was conducted to determine the necessity of septoplasty for patients with nasal bone fracture accompanying grade I septal fractures. Methods: Among 105 patients with nasal bone fractures, 52 who had grade I septal fracture were diagnosed based on physical examination and computed tomography. Patients' age ranged from 14 to 65 years (mean 29.25 years), and 35 were male and 17 female. Patients were divided into 2 groups according to surgical treatment methods: patients who underwent closed reduction only (group 1, n=28) and those who underwent simultaneous closed reduction and septoplasty (group 2, n=24). The treatment outcomes were evaluated by comparing changes in nasal airway volume measured by acoustic rhinometry before the surgery, 3 months and 6 months after the surgery according to the timing of surgical repair and surgical treatment methods. Results: Nasal airway volume increased after the surgery by 17.8% in 3 months after the surgery, 25.2% in 6 months in group 1 and by 22.7% in 3 months, 35.8% in 6 months in group 2. The increase in airway volume after the surgery by 26.3% in 3 months after the surgery, 34.2% in 6 months after the surgery in operation within 1 week after trauma and by 12.1% in 3 months, 22.2% in 6 months after the operation later 1 week after trauma. The difference was statistically significant. Three patients in group 1 complained of intermittent nasal obstruction, two of whom showed a decrease in nasal airway volume by acoustic rhinometry. Conclusion: Most patients with nasal bone fractures accompanying grade I septal fractures have been treated with closed reduction in clinical settings. However, the results of this study suggest that septoplasty be performed after a correct diagnosis of septal fracture is made through comprehensive physical examination and computed tomography. Septoplasty is important to obtain more favorable outcomes and reduce complication.

실시간교통정보 이용에 따른 차량의 CO, VOC, NOx 저감효과 평가

김준형,엄정섭,Kim, Jun-Hyung,Um, Jung-Sup 한국환경영향평가학회 2011 환경영향평가 Vol.20 No.2

This paper was inspired by the fact that Real-time Traffic Information Service could play a key role in reducing incomplete combustion time remarkably since it can provide traffic jam information in real-time basis. Emission characteristics of experimental engines were studied with variable travel distances and speed of car in terms of traffic information provided. 12 Km distance road of Susung district in Daegu is taken as an experimental area to examine this new approach. The emission was tested while the driving was done at 8 AM, 3 PM, 6 PM which represents various traffic conditions. The reduced emission has been measured for a travel distance running at different loads (conventional shortest route and Real-time Traffic Information) and various loads (CO, VOC and NOx) are all inventoried and calculated in terms of existing emission factors. The emission has been shown to reduce linearly with travel distance : carbon monoxide (20.56%), VOC (29.21%), NOx(8.86%).

외측대퇴회선동맥 상행가지의 천공지피판을 이용한 대전자부 욕창의 재건

김준형,어수락,조상헌,Kim, Jun-Hyung,Eo, Su-Rak,Cho, Sang-Hun 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.5

Purpose: Trochanteric pressure sores management has been improved through the development of musculocutaneous flaps. But it has many drawbacks such as donor site morbidity and functional muscle sacrifice. With the introduction of perforator flap, it is possible to use in every location where musculocutaneous perforators are present. We have reconstructed trochanteric pressure sores using perforator-based flaps from the ascending branch of lateral circumflex femoral artery. Methods: Between May of 2006 and April of 2008, we performed six cases of perforator-based flap from the ascending branch of lateral circumflex femoral artery for the coverage of trochanteric pressure sores. For identifying perforators, a line was drawn from the anterior superior iliac spine to the superolateral border of the patella as the vertical axis, from the pubis to the trochanteric prominence as the horizontal axis. In the lateral aspect of the intersection of these two axes, various flap were designed according to its defects. The flap was raised in the subcutaneous plane above the fascia and the pedicle was traced by doppler and identified. The pedicle was meticulously dissected not to injure the periadventitial tissues and transposed to the defect. The donor site was closed primarily. Results: The mean age of patients was 56.2 years. Four male and two female patients were studied. Five patients were paraplegic. The mean defect size was $6{\times}4\;cm$. The largest flap dimension was $14{\times}7\;cm$. Donor sites were closed primarily without any complications. All flaps survived completely without necrosis, hematoma or infection. There were no recurrence during the follow-up period. Conclusion: Trochanteric pressure sores using perforator-based flap from the ascending branch of lateral circumflex femoral artery can be performed safely and it would be a reliable option for coverage of trochanteric pressure sores with minimal donor site morbidity.

Infrared Camera를 활용한 가열 아스팔트 혼합물의 효율적인 다짐관리 방안

김준형,이석홍,김완상,Kim. Jun-Hyung,Lee. Suck-Hong,Kim. Wan-Sang 한국방재학회 2007 한국방재학회 학술발표대회논문집 Vol.2007 No.1

아스팔트포장의 수명 및 공용성 확보를 위한 품질관리 대책의 하나로 아스팔트포장 포설면의 온도 불균형(Thermal Segregation) 현상 최소화를 위하여 균질한 다짐밀도를 확보하기 위한 연구가 미국에서 수행되고 있다. 특히, 적외선 카메라(Infrared Camera)를 이용하여 포설 또는 다짐작업 중인 아스팔트포장 표면의 온도분포를 파악하여 품질관리 기준으로 활용하고 있다. 국내에서도 온도분포 파악을 통한 아스팔트포장의 효율적인 다짐관리 방안이 필요하고 이에 대한 연구가 현재 수행되고 있다. In resent years, temperature segregation has been identified as one of the most important concepts concerning segregation. An Infrared Camera is one of the tools that have been recognized to be effective in identifying temperature segregation. Several state of USA have recognized the problem and have enacted Specifications, and/or test procedures to eliminate temperature segregation. The major objective of this study is to investigate effective compaction method of hot mix asphalt during road construction using Infrared Camera.

딤플을 적용한 평판에 대한 항력 감소 연구

백부근(Bu-Geun Paik),편영식(Young-Sik Pyun),김준형(Jun-Hyung Kim),김경열(Kyung-Youl Kim),김기섭(Kim1 ?Ki-Sup),정철민(Chul-Min Jung),김찬기(Chan-Ki Kim) 대한조선학회 2012 大韓造船學會 論文集 Vol.49 No.4

청년 주택문제에 대한 세 가지 가설

김준형(Kim Jun Hyung) 도시정책학회 2016 도시부동산연구 Vol.7 No.3

There is growing concern over the life quality and stability of young population, and the housing problem lies at the heart of the issue. In this paper, three hypotheses on the cause and seriousness of the problem are examined: Do parents reduce financial support or downpayment for their children households? Do the present young households face severer housing cost burden? Are the present housing purchase prices or rents out of reach for young households? Based on the Korea Labor and Income Panel Study (KLIPS) data, the present parents are still supporting their separate children households. The housing cost burden among young households is worsening in terms of Rent to Income Ratio (RIR), which is, however, much lower than that of old households. Finally, in Seoul, the young households in the 1st and 2nd income quintile can neither own nor rent the cheapest housing in the region. Similarly, the households in the 3rd income quintile cannot access the median-price housing in the region.

근린내 혼합의 가치: 초등학생 학부모 설문조사를 기초로

김준형 ( Kim Jun Hyung ) 한국감정평가학회 2017 감정평가학논집 Vol.16 No.1

최근 도시계획 및 부동산개발에 있어 토지이용의 혼합, 용도의 융복합 등을 실천하려는 움직임이 활발하다. 그러나 토지이용의 혼합은 여전히 부정적 영향을 야기할 수 있으며, 실제 주민들이나 이용자들은 이질적인 공간보다 동질적인 공간을 선호할 수 있다. 그럼에도 토지이용의 혼합에 대한 국내외 연구들은 대부분 토지이용의 혼합이 부동산가격에 미치는 영향에 관심을 집중하고 있다. 이에 본 연구는 근린을 초등학교 학구로 설정, 초등학교 학부모를 대상으로 설문조사를 실시하여, 근린의 혼합에 대한 주민들의 선호를 살펴보았다. 분석결과 주민들은 이질적 근린보다 동질적 근린을 선호하고 있었다. 주택, 주택 이외의 건물, 주민 등 8개 항목으로 나누어 살펴본 결과, 근린 내에서 그 특성이 서로 비슷한 것이 바람직하다는 응답이 모든 항목에 걸쳐 60% 이상으로 나타났다. 이는 부동산가격의 증가라는 긍정적 효과에 기초하여 혼합이 추진될 경우 근린 단위에서 강력한 반발에 부딪힐 수 있음을 시사한다. 항목별로 살펴볼 경우 이질적 근린에 대한 수용 여지도 확인할 수 있었다. 건물의 용도, 면적, 그리고 주민의 연령대에 있어서는 이질성에 대해서 용인하는 비율이 상대적으로 높게 나타났다. 이는 국내에서 토지이용의 혼합을 추진할 경우 주택 이외 건물들의 용도나 면적, 그리고 주민들의 연령대를 다양하게 하는 전략이 적합함을 시사한다. In the contemporary urban planning and real estate fields, practices based on land use mix and functional convergence are highly encouraged. However, neighborhood heterogeneity can still make negative externality and residents may still prefer homogeneous neighborhood. Nevertheless, previous studies have concentrated on the relationship between land use mix and real estate price appreciation. This paper enhances our knowledge of neighborhood heterogeneity based on the questionnaire survey of elementary school parents in Seoul. Results report that most residents prefer homogeneous neighborhood. Analyzing their preference in terms of housing, buildings and residents composition, it is more than 60 per cent who agrees the similarity of character is desirable. This implies that practices of land-use mix may encounter strong opposition of residents in Korea. In a detailed analysis, several components have higher level of acceptance to their heterogeneity such as housing size, building use and age of residents. This means that, in Korea, the strategy of land-use mix should enhance the variety of housing size, building use and age of residents.

Digit-Serial 곱셈기 기반의 PCI 인터페이스를 갖는 고속 타원곡선 암호 시스템 하드웨어 설계

김준형(Jun-Hyung Kim),류제혁(Je-Hyuk Ryu),조준동(Jun-Dong Cho) 한국통신학회 2003 한국통신학회 학술대회논문집 Vol.2003 No.7