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.

서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)

김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2

Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.

CNUOS의 원형 설계

황영원,김봉환,이광일,김상하 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.1

An operating system is program modules within a computer system that govern the control of equipment resources such as processors, main storage, secondary storages, input/output devices, and files. CNUOS is a research project on distributed operating systems being carried out at Chungnam National University. Its goal is to investigate capability-based, object oriented systems and to build a working prototype system to use and evaluate. In this system, user-level server processes provide functions that have been traditionally provided by the operating system. This approach leads to a small(hence more reliable)kernel and makes it easier to provide, modify, and test new services. In this paper, The kernel prototype of CNUOS will be proposed.

Streptozotocin유도 당뇨병이 백서하악 절단과두 치유에 미치는 영향의 실험적 연구

황의환,이상래,홍정표,김원철 大韓口腔顎顔面 放射線學會 1994 Imaging Science in Dentistry Vol.24 No.2

The purpose of this study was to investigate the remodeling process of the streptozotocin-induced diabetic rat's resected condyle. This experiment was performed with male Sprague-Dawly strain rats weighing approximately 250gm, which were rendered diabetic by an intravenous injection of streptozotocin(70 ㎎/㎏ body weight). After condylectomy, experimental rats were serially terminated on the 1st week, the 2nd week, the 3rd week, and the 4th week. The following termination, the mandibles were dissected out to make specimens. Each mandibular condyle was radiographed with Hitex HA-80(Hitex Co., Ltd. Japan). In addition to radiographic observation, the mandibular condyles, further decalcified and embedded in paraffin, were sectioned and stained with Hematoxylin and Eosin, Toluidine blue and Masson's trichrome. The were observed with a light microscope and a polarizing microscope. The results were as follows. 1.Soft X-ray radiograms revealed proliferation of bone after 1 week in both groups. Irregularly repaired bones and dense trabeculae were clearly observed in experimental group. 2.The resected condyles were repaired by intramembraneous and endochondral bone formation in both groups. 3.Bone tissue repair was initiated from the adjacent margin of resected bone, and cartilginous tissues were observed at the top of repaired one in both groups. 4.The number of osteoblasts of experimental group was small, compared with control group. Each osteoblast was small and flap. The thin trabeculae were irregularly formed. 5.Collagens of bone were gradually matured in both groups, but the degree of maturation was lower in experimental group. 6.Fibrous tissues covered the upper parts of repaired bone were densely arranged in the both groups. Conclusively, atrophied osteoblasts, immature collagen of bone, and this and irregular trabeculae which were characterized in the diabetes experimental group showed diabetes disturbed osteoblastic function and caused disturbance of remodeling process of bone.

텍스트 마이닝을 이용한 웹 문서의 자동 분류

황재문,정성환 國立 昌原大學校 精報通信硏究所 1999 精報通信論文集 Vol.3 No.-

Recently, as spreading of computer supplement and development of communication technology using network, the web users have rapidly increased in number on Internet environment. Then, new technology development to efficiently classify and retrieve this increasing information is necessarily required. In this paper, we propose a method of information classification with text-mining technique based on the document indexing method using representative keywords for efficient information retrieval. In the experimental results using total 1,200 Korean language articles of 4 categories, the proposed method shows average about 95% performance except information communication category in the classification rate.

船員災害補償에 대한 强制保險의 比較硏究

黃錫甲,金成煥 한국해양대학교 국제해양연구소 2001 韓國海洋大學校 人文社會科學論叢 Vol.13 No.1

I have comparative studied insurance system relating to Seamen's Accident Compensation comparing with the Seafarers Act. So, I want to suggest its improvement measures as the solving way of its problems. It is the legal system for the shipowner to compensate the crew under the missing of crew or the losing of personal article. Also, the shipowner must be the insured of seamen in order to perform the seamen's accident compensation entirely, and the insurance by the National Federation of Fisheries Cooperative Act and Korea Shipping Association Act musto be included to this insurance, and thus there is the social securing scope as well as living securing scope in this insurance. With regard to the security of the seamen's accident compensation as indicated in the aboves, the shipowner has secured its effectiveness by all kinds of insurance, making the crew as the insured. If the above-mentioned matters are generalized, the seamen's accident compensation standard is below the accident compensation standard of ground worker, and thus the necessity far improvement of the seamen's accident compensation system is required. Accordingly, as its improvement way is the tentatively named seamen's accident compensation insurance law to be presented as the law-making under the existing industrial accident insurance law in consideration with the speciality of crew. It is thought which there will have to be the legal and systematic procedures.

ebXML 비즈니스 프로세스 변환기의 개발

황성진,박경환 동아대학교 정보기술연구소 2003 情報技術硏究所論文誌 Vol.10 No.2

We use an ebXML business process to define and to lead a business flow. An ebXML business process can be represented by a UML and an XML, and leads to interchange real-data according to a business flow within a messaging server. Now a messaging server that support an ebXML business process is little. Most messaging servers are based on an XML/EDI messaging server, and support a transport, routing and packaging of an ebXML. But a business process for each solution needs to translate into an ebXML business process, because a business process type for each solution is different. In this paper, we develop the translator for ebXML business processes in order to solve this problem, and use a Microsoft BizTalk Server 2000 as a messaging server.

CNUOS subset으로서의 DOS program들의 Multitasking

황영원,김봉환,이광일,김상하 충남대학교 자연과학연구소 1993 忠南科學硏究誌 Vol.20 No.1

A number of softwares have been being developed under DOS on personal computer. CNUOS is a distributed system that is designed to provide the environment upon which application programs developed under heterogeneous operating systems including DOS can be executed simultaneously. Protection is necessary for reliable mutitasking and can be used to prevent tasks from interfering with each other. In this paper, we will introduce two modules as a subset of CNUOS: the protection module and the DOS emulation module which is able to support the multiprogramming of DOS programs.

타액선 질환의 조영촬영법과 방사성동위원소 스캔법을 이용한 임상적 연구

황의환,이상래,박윤경 大韓口腔顎顔面 放射線學會 1999 Imaging Science in Dentistry Vol.29 No.1

The purpose of this study was to established the characteristic radiographic features in salivary gland diseases by means of sialography and scintigraphy. Sialograms and scintigrams with diseases of salivary gland were examined. In this group were 5 salivary stones, 14 sialadenitis, 17 Sjogren's syndromes and 8 benign tumors. The obtained results were as follows; 1. In the configuration of the shape of main duct, those revealed that modified curvilinear and curvilinear types were predominant in Sjogren's syndromes but reverse sigmoid and angular types were in sialolithiasis and sialadenitis combined with sialodochitis. 2. In the configuration of the course of main duct, those revealed that smooth types were predominant in sialadenitis and irregular types were predominant in Sjogren's syndromes and benign tumors and irregular types were seen in all salivary stones and sialadenitis combined with sialodochitis. 3. In the type of intraglandular pattern, those revealed that destructive changes of salivary duct system and parenchyma were severe in sialadenitis and salivary stones and predominantly severe in Sjogren's syndromes. 4. The function of salivary gland was decreased severely in Sjogren's syndrome, and also decrease in salivary stone and sialadenitis. In benign tumor, the uptake of radioisotope was not seen in lesion and the function of salivary gland decreased in its remaining normal parenchyma.(J Korean Oral Maxillofac Radiol 1999:29:175-189)

항만물류 XML/EDI 시스템의 개발

황성진,안선하,박경환 동아대학교 정보기술연구소 2002 情報技術硏究所論文誌 Vol.9 No.2

This thesis investigate Disadvantages of traditional Port Logistics EDI, and introduce how to design and implement XML/EDI system on based Microsoft's Biztalk Framwork in order to solve it. The foundational structure of this system constructed application and Biztalk server. Also flow of data is following: Datas input through application and store to XML-document. The next step transmit XML-document to BizTalk server. BizTalk server work mapping XML-document to standard EDI-document. And standard EDI-document transmit to custom house.