Primary intraosseous carcinoma of the mandible

Hwang, Eui-Hwan,Choi, Yong-Suk,Lee, Sang-Rae 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4

A very uncommon tumor, primary intraosseous carcinoma (PIOC), is a carcinoma arising within the jaw. The definite diagnosis of PIOC is often difficult as the lesion must be distinguished from alveolar carcinoma that may invade the bone from the overlying soft tissues or from the tumors that have metastasized to the jaw from a distant site. A case of PIOC arising in the mandible is presented. The clinical, radiologic, and histologic features are described. This rare lesion should be considered in any differential diagnosis of a jaw radiolucency.

행정소송의 구조개혁

황환교 尙志大學校 1998 論文集 Vol.19 No.-

In this study I reviewed for the Court Organization Law and the revised portion of the Administrative Litigation law among the six laws for reformation of the judicial system as was revised on July 27 1994 in reference to data published by the Supreme Court. In the modern state in respect to the welfare administrative functions the state carries out the ground for infringement of rights of the people by the administrative actions was increased as much by enhancement of reliance to the administration by individuals subject to diversification, wider range and professionalization by the administrative actions. As long as the major of the administrative litigation system are in relief of right of the people the effective employment will be much more required with extension of democracy. Since therefore, the necessity in the reformation of administrative litigation system has been brought in the course of execution by the old administrative litigation law. Now, the structural reformation of administrative litigation was made by the Supreme Court as a part of reformation of the judicial system. According to the contents there are such matters as optional procedure of administrative litigation, adjustment in judgement structure, establishment of administrative court, change in jurisdiction of trial and adjustment in the institution period. However, there are still many issues to be reformed by the administrative litigation structure. Those are the lawsuit methods such as introduction of compulsory lawyer system, introduction of jury system or attendant system in the administrative litigation, introduction of such group lawsuit and citizens' lawsuit, enhancement of professionalism by the judges and betterment in the administrative litigation system. I close this writing by the above as these matters are left behind for future issues.

방사성 폐기물 시멘트 고화체로 부터의 ?? 및 ?? 용출특성 연구

황선태,이경주,최길웅,박헌휘,김환영 대한방사선 방어학회 1985 방사선방어학회지 Vol.10 No.2

방사성폐기물 처리, 처분의 안정성 평가를 위하여 방사성 고화체에서 용출되는 137Cs과 90Sr의 방사능 용출율과 누적용출분율을 계측·분석하여 시멘트를 사용한 방사성 고화체에서 Cs+과 Sr++의 용출특성을 조사하였다. 모의방사성 폐액의 몰농도, 시멘트의 종류, 첨가물질 및 붕산농도 등을 변화시키면서 sodium silicate법과 중화법으로 원주형 시멘트 고화제를 제작하였다. 여기에서 가압경수로형 원자력 발전소의 모의 농축폐액의 시멘트 고화체로부터 용출연구는 IAEA의 추천방법에 따라서 수행되었다. 실험결과는 대부분 이미 보고된 연구자료들과 잘 일치하고 있으나 수밀성 시멘트 고화체에서는 상당히 높은 방사능 용출율을 보여주고 있음으로써 방사성 폐기를 고화체에 그 사용이 적합하지 않음을 알게 된다. For the safety assessment of radwaste treatment and disposal, the leaching characteristics of Cs++ and Sr++ from the cement-solidified radwastes was investigated by means of the survey and analysis of the activity leach rate and cumulative leach fraction of 137Cs and 90Sr leaching from solidified radwastes. The cylindrical cement-solidified samples were made by the sodium silicate method and neutralization method changing the mole density of simulated liquid radwaste, type of cement, adding material and concentration of boric acid. The leaching study was carried out by the method using simulated PWR concentrated liquid radwaste solidified in cement that had been processed following the recommendations of IAEA. All the experimental results are in well accordance with the research data reported previously, but the watertight cement-solidified radwastes show rather high leach rate of radioactivity. It is learned, therefore, that the watertight cement is not adequate as the material for the solidified radwastes.

敎大 出身者의 敎職 適應 狀況 評價

朴桓昊,진쾌현,黃義一 釜山敎育大學 1973 부산교육대학 논문집 Vol.9 No.1

It is the purpose of this study to evaluate the adaptation status to the teaching career of the teachers college graduates and to systematically analyze and rearrange the materials concerned so that some suggestions for the studies related to this field might be concluded. Procedure The teacher's quality for the profession has been measured by an evaluating scale and the attitude for the profession has been measured by standardized tools. And a questionaire of the writer's own composing has been used in examining the general trend of the teacher's quality. This study has been carried on with the following limitations: (1) The area of investigation has been limitted to Busan area. (2) The evaluated teachers have not had any previous training. (3) The actual visiting or interviewing process has not been accompanied. Results The results of the study can be summarized as the following: 1. In the investigation of the teacher's attitude toward the profession, the attitude point of the teachers college graduates was higher by 4.47 points, and the standard of the attitude of the woman teachers was a little higher. 2. In the investigation of the view of value-judgement, "the pride for the teaching profession' marked a higher proportion with the group of teachers college graduates(77.76%). 3. In the item of the degree of enthusiasm for the guidance of the problem child, the answer of "feel keenly the necessity of it" was shown 70%, which was considerably high standard of all sampling items, especialy the zeal of the woman teachers for this guidance was very high. 4. The standard of the teacher's quality of the teacher college graduates of both sexes showed a high percentage. 5. In the investigation of the trend of the teacher's quality through a questionaire, there was no difference among each sampling item. 6. In the self-evaluation for the ability of subject instruction, the teachers, as a whole, admitted the shortage of their ability in the teaching skill. 7. The problems in the teaching of each subject were found in the following fields: (1) "dancing" and "ball games" in the physical education, "instrumental music and concert" in the music subject, "drawing"a and "writing" in the art, (2) "civic course" in the social life, "gathering" in the arithmetic, "geology" in the natural science, and "individual guidance" in the moral life. 8. The degree of application of the educational theories to the professional life was answered in the affirmative in each field. Recommondation Following suggestions have been concluded as a result of this study: 1. The standard the teacher's attitude toward the teaching profession is considered generally low, and it is the writer's belef that the education that the education course should be extended and strengthened in the curriculum of the teachers college and the teachers should be given a chance of continuous in-service training program. 2. The teacher's quality of the woman teachers is lower than that of the man teachers. And it is desirable that more opportunities of professional training for the woman teachers should be considered. 3. In order that the teaching skills studied during the cadet teacher practice period be utilized in the actual class room activities, more practical problems should be treated during the cadet teacher practice course. 4. The educational plan for the charactor-improving in the aspect of the practical moral life, which is tend to be neglected easily in the college life, should be treated more seriously in the teachers college curriculum.

XML 기반의 응답자 주도형 실시간 설문조사 시스템의 설계 및 구현

전찬환,최황규 강원대학교 정보통신연구소 2004 정보통신논문지 Vol.8 No.-

It seems to be so many surveys for marketing research or customer's behavior. Recently, such s w e y systems using a standalone survey software or through on-line web site have been developed. Due to much of time and effort to deal with various and large data, an automated computer survey system's need has been desperately expected. This paper reveals that we design and implement reliable real-time survey system useing XML in order to process survey system's various type of data efficiently.

하악과두 골절에 대한 임상적 연구

손보형,이효빈,황호길,윤창륙,여환호 大韓顎顔面成形再建外科學會 1992 Maxillofacial Plastic Reconstructive Surgery Vol.14 No.4

The author investigated the 162 patients with the condylar fractres of the mandilble who were admitted in Dept. of Oral and Maxillofacial Surgery, Hospital of Chosun Dental School from January 1985 to September 1992 clinically, including fracture incidennce, age and sex of the patients, causes of injures, associated injures, treatments and complications and obtained the following results. 1. Of the 449 patients with mandibular fractures, 162patients suffered condylar fractures(36.1%). 2. Of the 162 patients, males with condylar fractures were 128 patients, by a ratio of 3.8 : 1. 3. The most frequently affected age group was the third decade(32.7%). 4. Falls were ranked as the predominant cause(50.6%), followed by traffic accident(27.8%) and violence (16.0%). 5. The incidence of single condylar fractures was 28% and symphysis fractures were the most commomest of the concomittant injuries(60%). 6. The subcondylar fractures occurred most frequently(41.6%) and anteromedial displacement of the condylar fragments occurred most frequently(45.4%) 7. Of the all condylar fracture patients, children under 15 of age comprized 31 patients(19.1%) and condylar head fractures occurred most frequently at those children. 8. Of the managetments in condylar fractures, open reduction was 52.5% and remainder were closed reduction(47.5%). 9. Complications ensured such as TMJ ankylosis, limitation of mouth opening and mandibular movements, TMJ dysfunction, and anterior open bite.

항공기 착륙장치의 충격흡수특성해석

김두만,임경호,황재혁,이환규 한국항공대학교 1992 論文集 Vol.30 No.-

본 연구를 통하여 항공기 착륙장치의 거동(동특성 및 완충기 효율)을 해석하고 평가하는 Software를 개발하엿다. 이 프로그램을 개발하기 위해 착륙장치를 2개의 자유도를 가지는 동역학시스템으로 모델링하고 운동방정식을 유도하였다. 또한 완충기에 작용하는 내력(즉 공기력, orifice force, friction force)을 표현하는 관계식을 정립하였으며, 타이어의 힘을 표현하는 관계식을 유도하였다. 그리고 운동방정식에는 타이어의 Spin Up운동도 고려되었다. 선정된 항공기의 착륙장치의 Parameter의 값을 프로그램의 입력 Data로 사용했을 때 매우 신뢰할 만한 동특성의 결과를 얻었으며, 특히 Drop Test 결과와 본 연구에서 개발된 Software에서 얻어진 결과를 비교했을 때 매우 흡사한 결과를 얻었다. 따라서 본 연구에서 개발된 Software는 앞으로 국산화되는 착륙장치의 개발 및 설계에 매우 유용하게 사용될 것으로 판단된다. 또한 본 연구에서 사용된 입력 Data중 중요한 10개의 Parameter를 선정하여, 각 Parsmeter를 변화시키면서 착륙장치의 동특성 및 효율의 변화를 고찰해 보았다. 완충기 설계시 가장 중요한 Parameter들은 K-factor, Orifice 단면적 등과 같은 완충기의 변수로 사료되며, 타이어의 변수 T??이나 b는 중요한 변수가 아님을 확인하였다. 또한 항공기의 무게 W, Wheel/Tire의 무게, 완충기의 초기 공기압 P??, 항공역학계수 A도 착륙장치의 효율에는 크게 영향을 미치지 않고 있음을 고찰하였다. 그러나 공기실의 Politropic 지수 n, 항공기의 수직착륙속도 V는 착륙장치의 효융에 Non-Monotonic하게 영향을 미치는 것을 고찰하였다. The software which analysis and evaluate the dynamic characteristics of an landing gear has been developed in this study. The landing gear system has been modelled to be 2 DOF dynamic system to drive the equation of motion. The three internal forces, which are air pressure force, orifice force, and friction force, has been formulated and also the tire force has been formulated and also the tire force has been derived. When the typical values of the design parameters is applied to the developed software, the reliable results of the dynamic characteristics are obtained. Furthermore there is a good agreement between the simulation results and experimental drop test extracted from relevant literatures. It can be concluded that the developed software will be useful for the design and development of a landing gear system inside Korea.

급성 포름알데히드 가스 흡입에 의한 흰쥐 후각상피의 형태학적 변화

백선용,전재기,문용석,황승영,노환중,고의경,왕수건 대한해부학회 1998 Anatomy & Cell Biology Vol.31 No.3

구강 악안면 연조직 결손 재건을 위한 진피 지방 이식의 이용 : 증례보고

김수관,박노승,이병준,황경곤,여환호,김영균 大韓顎顔面成形再建外科學會 1996 Maxillofacial Plastic Reconstructive Surgery Vol.18 No.3

Soft tissue defects in oral & maxillofacial region caused by tumor resection, trauma, congenital deformities have been treated in autogenous soft tissue flap, allogenic material, free dermal graft, fascia graft. Of these methods, autogenous dermis graft had initially been applied in hernia treatment at the beginning of nineteenth century and have been applied in soft tissue augmentation coverage of vital structure, dead space removal and reconstruction of fascia. A fat graft is used in reconstruction of orbit at the enucleation, restoration of facial contours, etc. In this case, patient with chin soft tissue defect in traffic accident was treated in autogenous dermis-fat graft from patient's abdominal and gluteal region. Chin defect was recons ructed favorably. There was no severe atrophy of grafted area 12 months postoperatively. We will report the result that is favorable esthetically with literature review.

광양만 유역 퇴적토 중의 다환방향족탄화수소류

정흥호,정호승,김은영,조환익,황주찬,최상원 한국환경과학회 2004 한국환경과학회지 Vol.13 No.6

Polycyclic aromatic hydrocarbons(PAHs) in sediments of Kwangyang bay on Korea, have been investigated by gas chromatography-mass spectrometery (GC/MS). The average content of total PAHs in all samples was 2,211ppb, and the range was from 36 to 22,699pph. The higher concentrations were found in sediment sampled near Kwangyang iron processing plant, Taeindo. The resulting distributions of PAHs according to the number of aromatic ring and molecular ratios of specific aromatic compounds (phenanthrene, anthracene, fluoranthene and pyrene) have been discussed in terms of sample location, origin of the organic matter. Four, five and six rings of PAHs were mainly found near to Kwangyang iron processing plant, and three and four rings near to Yeosu chemical kombinat. This result typically indicated the local characteristics, depending on the origin of PAHs.