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박준성,김보관 忠南大學校 産業技術硏究所 1992 산업기술연구논문집 Vol.7 No.1
본 논문에서는 대칭형 스위칭 함수에 대한 2단계 최소화 표현식의 크기를 이론적으로 증명하였으며, 새로운 논리 최소화 알고리즘을 제안하였다. 제안된 알고리즘은, 모든 주적항(Prime Implicants)의 생성과 필요 주적항의 선택 또는 적항의 확대 ·축소 ·선택과정의 반복에 의존하는 기존의 최소화 방법과는 달리, 검출된 대칭성으로 부터 최소화 표현식을 반복계산없이 직접 생성하므로 기억용량과 계산시간 면에서 매우 효율적이다. This paper presents a rigorous proof on the size of absolute minimum covers of symmetric switching functions, and proposes a new logic minmization algorithm for such functions. The algorithm is very efficient in terms of storage space and execution of times because it, unlike other algorithms that depend on generation all prime implicants followed by selestion of necessary ones such as essential prime implicants or on iteration of Expand-Irredundant-Cover-Reduce operations, directiy generates an absolute minimum cover once symmetry is detected.
서용권,박준관 동아대학교 공과대학부설 생산기술연구소 1998 生産技術硏究所硏究論文集 Vol.3 No.2
In this study, we address applications of the POD(Proper Orthogonal Decomposition) method to turbulent flows. In particular, we apply the method to a one-dimensional shallow water problem and a two-dimensional rectangular flow. We obtained coherent structures of each flow field and discussed their contribution to the understanding of complex flows such as turbulence.
하악골 절제술후 재이식된 돌결자가골 재이식 : 치험 3례
김 식,김수관,김운규,김수민,류종희,이준길,조경안,김수흥,정태영,여환호 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2
We described three cases of immediate reimplantation of a frozen-thawed autogenous mandible composed of a mixture of iliac bone, marrow, and particulate hydroxyapatite in tumors of the mandible. Acceptable outcomes were obtained in three patients who underwent immediate autogenous mandibular graft reconstruction. The conditions leading to successful outcome of the procedure are also discussed. Reimplantation of frozen autogenous lesioned mandible was performed in three patients with mandibular tumors. Two reimplanted grafts survived without complications following surgery. One case had postoperative infection that resolved with appropriate antibiotic treatment. There were no recurrences of the primary lesions. Satisfactory facial contour after surgery was achieved. These results are most promising, and we believe that, with further refinement, this technique will offer a new and acceptable modality for facial reconstruction in patients with cancer.
상악골 전방부 골절단술후 발생된 개방형 열개 : 증례보고 A CASE REPORT
김훈,김수관,이준길,정태영 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.3
An anterior segmental osteotomy may be complicated by malpositioning,bleeding, perfusion deficiencies, periodontal defects(dehiscence), devitalized teeth, oronasal fistula, and nonunion(delayed union).If preiodontal defects occur after surgery, though hygiene and good nutrition are all that can be recommended until primary healing has occurred. However, a soft tussue graft might be needed at the defect site when the preiodontal defects do not heal properly. We reported a patient who showed an excellent prognosis after undergoing a palatal mucosa graft accompanied by laterally positioned flap as a result of a dehiscence that occurred after anterior segmental osteotomy.
류정호,김대윤,배준수,양병은,유준영,김용관 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5
Few topics in operative and perioperative patient management generate more controversy than that of appropriate fluid and electrolyte therapy. especially, controversy has swirled around colloid vs crystalloid therapy and the composition of administered fluids, agreement among clinicians as to what fluid therapy is appropriate, and in what amount, is rare. This controversy likely will be enhanced by Arieff' s provocative article. He described 11 adults and 2 pediatric patients. All developed fatal postoperative pulmonary edema, seemingly caused solely by excessive postoperative fluid administration. From January 1999 to December 1999, we investigated 24 patients, which were operated by orthognathic surgery, about the intraoperative fluid therapy and the associated effect in orthognathic surgery, which is regarded as one of the major surgery of oral and maxillofacial surgery. First, They were devided into two groups, that is one-jaw surgery and two-jaw surgery, and each groups were devided by intraoperative fluid volume of 8ml/kg/hr. Subjective assesment was collected through use of a series of 3 questionnaries. In each questionnaire, a 5-point Liekert scale was used far assessment of following parameters of recovery from anesthesia: headache, dizziness, drowsiness, nausea/vomiting, thirst. The patient completed questionnaire 1 at 4 hour after surgery, questionnaire 2 was completed at 24 hours after surgery, and questionnaire 3 was completed at 48 hours after surgery. This study demonstrated that appropriated perioperative rehydration decreases postoperative adverse outcomes and improved the patient's perception of the postoperative period.
일측성 질폐쇄 및 동측 신장 무발생을 동반한 중복자궁 2예
윤일영,여소진,김형문,김정식,김태희,이해혁,남계현,이권해,김준모,김민의 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2
Uterus didelphys with unilateral obstructed hemivagina and ipsilateral renal agenesis usually presents after menarch with progressive abdominal pain during menses secondary to hematocolpos, and indeed a very rare congenital anomaly due to Mullerian duct malformation. An accurate and prompt diagnosis is of importance to permit treatment and to assure the future fertility of the patient. Pelvic ultrasound, physical examination and pelvic MRI established a diagnosis of hematometracolpos secondary to uterus didelphys with unilateral imperforate hemivagina. An incision in the vaginal septum allowed drainage of the hematocolpos, providing relief of the patients symptoms. We report two case of uterus didelphys with obstructed hemivagina with brief review of the literature.
Bone Morphogenetic Protein 2-induced MAPKs Activation Is Independent of the Smad1/5 Activation
Jun, Ji Hae,Ryoo, Hyun-Mo,Woo, Kyung Mi,Kim, Gwan-Shik,Baek, Jeong-Hwa KOREAN ACADAMY OF ORAL BIOLOGY 2009 International Journal of Oral Biology Vol.34 No.2
Bone morphogenetic protein (BMP) 2 is a potent osteogenic factor. Although both Smad1/5 and mitogen-activated protein kinases (MAPKs) are activated by BMP2, the hierarchical relationship between them is unclear. In this study, we examined if BMP2-stimu1ated MAPK activation is regulated by Smad1/5 or vice versa. When C2C12 cells were treated with BMP2, the activation of extracellular signal-regulated kinasu (ERK), p38 MAPK and c-Jun-N-terminal kinase was evident within 5 min. The knockdown of both Smad1 and Smad5 by small interfering RNA did not affect the activation of these MAPKs. In addition, neither the overexpression of Smad1 nor Smad5 induced ERK activation. When ERK activation was induced by constitutively active MEK1 expression, the protein level and activation of Smad1 increased. Furthermore, the inhibition of constitutively active BMP receptor type IB-induced ERK activation significantly suppressed Smad1 activation. These results indicate that Smad1/5 activation is not necessary for BMP2-induced MAPK activation and also that ERK positively regulates Smad1 activation.
Jun-Ran Kim,In-Hong Jeong,Sang-Guei Lee,Hyun Gwan Goh 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.04
The acaricidal activity of Asarum heterotropoides root-derived principles, methyleugenol, safrole, 3-carene, α-asarone, pentadecane and A. heterotropoides root steam distillate constituents was tested against poultry red mites Dermanyssus gallinae (De Geer). All active principles were identified by spectroscopic analysis. Results were compared with those of two conventional acaricides, benzyl benzoate and N,N-diethyl-3-methylbenzamide (DEET). Methyleugenol (24 h LC50 = 0.57 μg/cm2) and safrole (24 h LC50 = 8.54 μg/cm2) were the most toxic compounds toward D. gallinae, followed by 3,4,5-trimethoxytoluene, 3,5-dimethoxytoluene, estragole, α-terpineol, verbenone, eucarvone, linalool, and terpinen-4-ol (LC50 = 15.65–27.88 μg/cm2). Methyleugenol was 16.7× and 11.0× more toxic than benzyl benzoate (LC50 = 9.52 μg/cm2) and DEET (LC50 = 6.28 μg/cm2), respectively; safrole was 1.1× and 0.73× more toxic. Asarum heterotropoides root-derived materials, particularly methyleugenol and safrole, merit further study as potential acaricides. Global efforts to reduce the level of highly toxic synthetic acaricides in indoor environments justify further studies on A. heterotropoides root extract and steam distillate preparations containing the active constituents described as potential contact-action fumigants for the control of mites.
하까엠(Community Forestry Programme)과 REDD+(인도네시아에서 하까엠이 REDD+의 이행주체가 될 수 있는가?)
윤준영(Jun-Young Yoon),박관수(Gwan-Soo Park),강호덕(Ho-Duck Kang),김세빈(Se-Bin Kim),이준우(Jun-Woo Lee),성용주(Yong-Joo Sung),이승우(Seung-woo Lee),이상진(Sang-Jin Lee),박범환(Beom-Hwan Park) 충남대학교 농업과학연구소 2011 농업과학연구 Vol.38 No.4
The purpose of this study was to investigate if an community forestry programme (HKm) could be one of the main tool for REDD+ in Indonesia. Recently, considerable numbers of countries including Norway, England, Korea and etc. have invested 69 million US$ in total to Indonesia for implementation of REDD+. However, forest dependent people without a communal right are subject to poor forest governance during a stream of REDD+ in Indonesia. This study suggest that HKm are needed to be a tool for REDD+ in order to achieve the objects of REDD+ in terms of Equity, Efficiency, and Effectiveness (3Es) by stimulating local and Indigenous peoples to participate in REDD+. As a result of our study, Indonesia government have designated only 200,000 ha for HKm area by 2007. Indonesia government have a week political will to extend its area to give a communal right to those peoples who dwell in state forests and HKm application process is complicated and slow. HKm has a potential to be main tool for REDD+ in Indonesia. However HKm will be difficult to be main tool for REDD+ without resolving current obstacles.