YFeO_3 薄板單結晶에서 Bubble 磁區의 動的擧動에 關한 硏究

金鍾悟 충남대학교 공업교육연구소 1984 論文集 Vol.7 No.1

Dynamical behavior of bubble domain in the monocrystalline YF_e 0_3 (60㎛) has been investigated using the magneto-optic Faraday effect, when the pulsed magnetic field is applied. It was observed that large bubble was created when the pulsed magnetic field having high rise time like 40 nsec. The process of bubble ⇔dumbbell shape transformation was solved by the analysis of photgraphs and response signals obtained by dynamical behavior of the bubble domain

EtOH-Water 혼합용매 중에서 Fuoss-Onsager's Semiempirical Equation에 의한 Et₄NC1, Et₄NBr, Et₄NI 의 전도도

오형식,김종현 木浦大學校基礎科學硏究所 1985 基礎科學硏究誌 Vol.3 No.-

0.0 ∼ 0.4몰분율의 에탄올+물 혼합용매에서 Et₄NCI, Et₄NBr, Et₄NI의 당량전도도를 25℃에서 측정하였고, 각 염들의 극한당량전도도와 Conductance parameter 는 Fuoss-Onsager's semiempirical equatopn에 의하여 계산하였다. 당량전도도는 염들에 농도가 증가 할 수록 감소하였고 √c에 대한 ∧의 도시는 직선성을 보여 주었다. 극한당량전도도는 에탄올의 몰분율이 증가함에 따라 감소하였으며, 수용액(0.0m.f.)과 0.1몰분율 에탄올 사이에서 가장 큰 감소를 보여 주었다. The Equivalentc conductance of dilute solution of Et₄NCI, Et₄NBr and Et₄NI in Ethanol+Water mixtures for 0.0∼0.4 mole fraction wes determined at 25℃ the limiting equivalent conductance and conductance parameters have been computed by Fuoss-Onsager's semiempirical equation. Equivalent conductance(∧)of salts decreased with the increased of the salts concentration and the plot of ∧ vs.√c shawed nearly linearity. The limiting equivalent conductance?? decreased with the increase of mole fraction of Ethanol and the maximum decrement in ?? shows between 0.0 and 0.1mole fraction of Ethanol.

상악골에 발생한 치성각화낭종

오선영,김수관,류종회,박인순 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.2

We described two cases of odontogenic keratocysts of the maxilla. Odontogenic keratocysts (OKCs) are jaw cysts with a proclivity for local invasion and recurrence. Clinically, OKCs are characterized by aggressive, local growth, The diagnosis of mandibular OKC is based on physical examination and plain film radiographic findings. However, histopathological confirmation is required to make the diagnosis with certainty. The molar regions of the mandible and maxilla are the principal primary locations. The maxillary antrum is also a common site. Initial therapy is typically enucleation with or without extraction of the associated teeth. Long-term follow-up is necessary because of the aggressive nature and recurrence rate of OKC.

신이식에서 이식신의 생존분석

오선미,김종학,황평주,구영선,강민규,나기량,김종섭,김성숙,이강욱,신영태,설종구,배진선,손기섭 충남대학교 의과대학 지역사회의학연구소 1997 충남의대잡지 Vol.24 No.2

To investigate the prognostic factors for the survival of transplanted kidney in patients with end-stage renal failure, 59 cases of renal transplantation from September 1986 to Feburary 1997 in Chungnam National University Hospital were analyzed retrospectively. The results were as follows: 1)The mean age of recipients was 33.8 years and that of doners was 38.9 years. The male to female ratio of recipients was 2.5:1, and that of donors was 1.03:1 2) Living related donore(LRD) were 79.6% and living non-related donors were 20.3%. The HLA-identical donors(ID) in LRD were 18.7% and HLA-haploidentical donors(HID) were 61.0%. In living non-related donors(LNRD), mean matched HLA-AB antigens were 1.56 and mean matched HLA-DR antigens were 0.56. 3) The average 5-year patient survival fate was 94%, and average 5-year graft survival rate was 70%. The 5-year graft survival fate of HLA-ID was 100%, and those HLA-HID and LNR were 70% and 36% respectively. 4) Total 33 episodes of acute rejection were found in 45.8% of transplanted patients. The number of acute rejection episode did not show significant difference between LRD and LNRD(P > 0.05). There was no significant difference in MLC between two groups(p > 0.05). 5) In comparison between the 18 patients who lost their graft function in 5 years and 17 patients who are maintaining graft function for more than 5 years, MLC was significantly lower in patients with functioning graft than of patients with non-functioning graft (p < 0.05). The number of rejection episode was also lower in patients with functioning graft than that of the patients with non-functioning graft(p < 0.05). However, there were no significant difference in recepient and donor age and history of pre-transplantation donor specific transfusion between two groups. With the results above, we can speculate that adequate donor selection according to good matched HLA typing and low MLC is very important for graft survival in renal transplantation. Prevention and treatment of acute rejection in renal transplantation is also na important factor for graft survival.

구강악안면 영역의 수술 시 악하 기관 삽관술의 유용성에 대한 임상적 고찰

김일규,장금수,최진호,오남식,류승현,김재우,정종권 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.2

It is hardto make a decision of what route we will select for endotracheal intubation at open reduction of oral and maxillofacial trauma. In the patients with fractures of multiple facial bones combined with fracture of crainal basal bone, intermaxillary fixtion makes oro-endotracheal intubation impossible. And the possibility of injury to the fracture site of crainal basal bone and the impossibility of reconstruction of naso-orbito-ethmoidal(NOE) complex fractures also make the naso-endotracheal intubation difficult. But it is not easy to select the tracheostomy because of its several complications and abhorrences. For above reson, Altermir introduced submental route for endotracheal intubation as new technique in 1986 and Green etc. modified this technique in 1996. The purpose of this article is to evaluate the efficiency of submental route for endotracheal intubation after experience of 10-clinical cases for variable reasons with review of articles.

釜山地域 經濟發展을 위한 地域企業人의 役割과 責任 : 企業家精神과 地域的 責任을 中心으로

오종석,황한식,김종관 부산대학교 1995 地域經濟硏究 Vol.- No.4

한국경제는 지금까지 국가 중심적 경제체제를 유지해 왔으나, 세계화, 지방화라는 시대적 변화에 직면하여 지역 분권적 경제체제를 확립하고, 이를 통해서 지역경쟁력을 강화함으로서 지역중심의 세계화를 추진해 나가지 않을 수 없게 되었다. 따라서 본 연구는 효과적인 지역경제발전을 모색해 나가기 위해서 부산지역을 연구대상으로 하여, 지역경제발전의 주체와 지역경제발전의 원동력을 조명하고, 지역경제발전을 위해서는 어떠한 환경이 조성되어야 하는 지를 문헌연구와 실증연구를 토대로 하여 고찰해 보고자 하였다. 그 결과, 다음과 같은 결론을 도출할 수 있었다. 첫째, 세계화, 지방화 시대의 지역경제 발전전략은 자립적·내발적 이어야 하며, 지역 스스로가 발전주체가 되어야 한다는 점이다. 특히 지역기업인은 지역에서 가장 중심적인 역할을 담담해야 하며, 지역기업 중심의 지역주체성 확립이 지역경제 발전의 기반이 되어야 한다는 것이다. 둘째, 지역경제 발전의 원동력은 지역기업인의 기업가정신과 지역적 책임이며, 이것을 통해 기업의 내생력을 강화시켜서 기업발전을 이룩하고, 지역경제의 발전을 실현해 나가야 한다는 점이다. 셋째, 지역경제의 발전을 위해서는 지역경제의 낙후원인을 분석, 진단하고 이를 통해서 외생적 환경조건을 정비함으로써 지역경제의 발전을 도모해 나가야 한다는 것이다.

정상인과 뇌졸중환자에서 운동유발전위의 평가

김동현,박종현,권오상,김두응 중앙대학교 의과대학 의과학연구소 1997 中央醫大誌 Vol.22 No.2

Since the development of magnetic stimulation as a way of assessing the function of central motor pathways, various neurologic diseases have been investigated by motor evoked potentials(MEP). This study was carried out to evaluate the usefulness of clinical application of MEP to the stroke patients. MEP were elicited with transcranial cortical stimulation using a magnetic coil in 21 healthy subjects and 18 stroke patients. Average of age was 37.5±18.0 and 63.7±7.7 years in normal and patient groups respectively. All stroke patients had a mild to severe clinical unilateral motor weakness, and also were proven to have unilateral infarction or hemorrhage at various regions of brain radiologically. During MEP studies, neither significant side effects nor pin were encountered. MEP latency of abductor pollicis brevis(APB) and extensor digitorum brevis(EDB) in controls measured 22.4±2.0 msec and 41.8±2.9 msec respectively. Normal central motor conduction time(CMCT) was 9.7±1.6 msec and 19.3±2.3 msec respectively. The amplitudes of MEP were not reliable due to great variability. Abnormal responses were noted in 5 patients on the APB and in 12 patients on the EDB motor evoked potentieal studies. Mean latency and CMCT were significantly prolonged in involved sites of the other 16 patients, comparing with control data. Prolonged latency and CMCT, increased inter-side difference of CMCT. Any potential was not a useful indicator in determining abnormality of MEP study. More paralyzed patients were apt to show abnormal responses in MEP studies. There were also more abnormal results during acute stage compared with chronic stage More abnormal results were observed in the patients with cerebral cortex or corona radiata involvements. It is suggested that MEP study is a useful and sensitive method in the evaluation of stroke patients and be a effective method for further understanding of central motor system.

정보기술의 특성이 조직구성원의 저항에 미치는 영향에 관한 연구 : 사용자의 IT인지정도와 개인성향을 중심으로

오종석,김경원 釜山 大學校 經營 經濟 硏究所 2002 經營 經濟 硏究 Vol.21 No.1

정보기술 도입과 관련된 연구에 있어서 초기의 시스템설계나 시스템관리와 같은 기술적 측면에서 접근하였으나 최근 연구에서는 조직구조나 조직 행동적인 측면에서 접근하려는 시도가 많아지고 있다. 정보기술의 도입은 조직의 변화를 유발하며 조직구조의 변화는 조직구성원의 반발과 저항을 초래할 수 있기 때문에 본 연구를 통하여 정보기술의 도입과 저항과의 관계를 조직행동적 측면에서 고찰하고자 한다.

사용자 MMI 화면 구성 방식의 DB 시스템 개발

오원록,김종교 全北大學校 1995 論文集 Vol.39 No.-

One of the most prominent feature of our database system is that it uses the User MMI screen layout and input record structure which users construct. Therefore, programmers need not program source code for each application area. Users can take effects of programming applications by just screen editing and input data record definition. The database system consistes of 3 program modules. 1) screen editor(sedit) - editing the initial screen for the DB engine, 2) form editor(form) - defining data record structures for DB engine, 3) the DB engine(playform) - managing database of the structure the user has defined. We will evolve this DB system to graphic mode, multi-key system, develop several db utilities, such as sort, print, etc. By using this system, users themselves can design their own db system(User screen, data record structure) easily, just as they develop DB application programs.

과학정책을 위한 정부조직의 역사적 개관

吳鎭坤,金鍾一 全北大學校 1996 論文集 Vol.41 No.-

The role of govements for promotions of science and science policy at national level originates from the initiatives which began in the seventeenth century in several European countries. We present a brief historical survey of government organizations for science policy and for promotion of science.