만성 골수성 백혈병 환자에서 발생한 거대 후복막강내 혈종 1예

박기령,김영선,박사영,최진혁,이순남,정화순 梨花女子大學校 醫科大學 醫科學硏究所 1996 EMJ (Ewha medical journal) Vol.19 No.1

Thrombohemorrhagic complications in chronic myeloproliferative disease(CMPD) including chronic myelogenous leukemia(CML) are not rare. Lower incidence of disordered hemostasis is reported in CML compared with other CMPD. The mechanism of thrombohemorrhagic complications might be a consequence of qualitative platelet abnormalites and prolonged bleeding time rather than that of thrombocytosis. Although defect of platelet function has been extensively investigated, there was no established consistent correlation between clinical bleeding and number and function of platelet. The most common site of bleeding complications in the CMPD is superficial mucosa. Bleeding in deep tissue and viscera is very unusual. We report a case of CML which developed a huge spontaneous retroperitoneal hematoma.

포스트-텐션 프리캐스트 외부 넓은 보-기둥 접합부의 비탄성 거동

박상욱,최윤철,김영찬,김대중,임재형,권기혁,문정호,이리형 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

Experimental results from the cycle lateral load tests for post-tensioned precast wide beam-column connections were presented. Six exterior beam-column assemblages of half scale were tested in the laboratory. The specimens consist of U-shaped precast wide beams and concrete columns. The continuity at the beam-column joint is achieved with the topping concrete and post-tensioning. The specimens were designed with parameters of the beam-to-column depth ration and the number of tendons within column core. The test results showed that the post-tensioned precast wide beam-column connection satisfied the provisional standard by ACI of acceptance criteria for concrete special moment frames.

한국의 지역문화정책과 그 발전과정에 관한 연구

박혜자,이기혁 朝鮮大學校 社會科學硏究所 1999 社會科學硏究 Vol.20 No.2

자동차부품 기업의 UML기반 자재관리시스템 설계 및 구현

박정혁,서기철,문태수 한국정보시스템학회 2003 情報시스템硏究 Vol.12 No.2

One of the important applications in Enterprise Resource Planning(ERP) systems is the Manufacturing Resource Planning(MRPII) system using Bill of Material(BOM). The manufacturing resource planning determines the quantity and timing of the production or purchase of subassemblies and raw materials needed to support the Master Production Scheduling(MPS). The bill of material is the recipe, a list of the materials needed to make a product. This paper intends to suggest a component-based materials management system using Unified Modeling Language(UML), as an application system for automobile part industry. Applying component based materials management systems designed with UML methodology, we analyzed the workflow and the document on materials management process from production planning to inventory management, and implemented a prototype of efficient materials management system, as a surrogate of existing material requirement planning(MRPI) system. To produce many other assemblies for a automobile part firm, component parts are assembled into subassemblies that are joined to assemble the finished product. Through the system suggested in this study, the level of inventory has cut down and the cost of inventory management has decreased. Also, the development method using UML makes the analysis and design phase to shorten in implementation period of MRPII system. The implementation of materials management system using CBD shows the ease of use in software reuse and the interoperability with corporate internal information system. The result of applying object-oriented CBD technique is to minimize the risk of life cycle and facilitate the reuse of software as mentioned to limitation of information engineering methodology.

염색체이상에 관한 연구(611례 분석)

박종우,구선회,민혁기 충남대학교 의과대학 지역사회의학연구소 1993 충남의대잡지 Vol.20 No.2

From March, 1988 to October, 1993, we studied chromosomal analysis from peripheral blood to investigate chromosomal abnormalities in 611 patients showing multiple congenital anomaly, growth or mental retardation, repeated pregnancy losses, infertility, amenorrhea, pubertal failure, ambiguous genitalia, fetal anormaly, malignant disease and others. 82 chromosomal abnormalities were recognized as follows. 1. The rate of chromosomal abnormality is 13.2%. Among them, autosomal abnormality is 67% and sex chromosomal abnormality is 33%. 2. 22 cases of 47, XY,+21, 21 cases of 47, XX,+21, 3 cases of 46, XX, t(14;21)(qll;qll), and 1 case of 46, XX, t(15;21)(q11;q11) were found in Down syndrome. 3. 13 cases of 45, X, 4 cases of 46X, i(Xq), 2 cases of 46X, i(Xq)/45, X, 1 case of 45, X/46, Xr(X), and 1 case of 45, X/47, XXX were found in Turner syndrome. 4. 6 cases of Kleinfelter syndrome were found. 5. 4 cases of reciprocal translocation, 3 cases of Robertsonian translocation and 2 cases of ring chromosomes were found.

Rabson Mendenhall syndrome의 치험 증례 : A CASE REPORT

권장혁,박기태 大韓小兒齒科學會 2004 大韓小兒齒科學會誌 Vol.31 No.3

Rabson Mendenhall syndrome은 Rabson과 Mendenhall에 의해 1955년 처음 발표된 증후군으로서, 심한 insulin resistance를 보이는 희귀한 상염색체 열성 유전성 질환이다. Insulin receptor의 돌연변이나 insulin이 작용하는 다른 target cell의 결함에 의해 나타나며, 일반적인 증상으로는 흑색가시세포종(acanthosis nigricans), 다모증(hypertrichosis), 손발톱 비대 (onychauxis), 성장 지체 (growth retardation), 성 조숙(precocious puberty), 생식기의 비대, 팽만된 복부(protuberant abdomen), 건성 피부(xerotic skin) 등이 나타난다. 악안면 영역에서는 치아의 이형성, 거친 얼굴의 피부, 하악 전돌, 균열 혀 (fissured tongue)와 같은 특징적 증상이 나타난다. 이에 본 증례에서는 Rabson Mendenhall syndrome으로 본원에 내원한 4세 환아에게 관찰된 치과적 특징들에 관하여 보고하는 바이다. Rabson-Mendenhall syndrome(RMS) is first characterized in 1955 by Rabson and btendenhall. RMS is a rare autosomal recessive variant with insulin resistance. This is due to insulin receptor mutations or other target-cell defects in insulin action. General findings include acanthosis nigricans, hypertrichosis, onychauxis, growth retardation, precocious puberty genital enlargement, protuberant abdomen and xerotic skin. Characteristic oral and maxillofacial findings include dental dysplasia, coarse facial skin, prognathic jaw and fissured tongue. In this case report, dental characteristics of a 4-year old boy with Rabson-Mendenhall syndrome are described.

전립선암의 신보조호르몬 요법

문기혁,박영호 순천향의학연구소 2004 Journal of Soonchunhyang Medical Science Vol.10 No.1

The concept of using a therapy that might downsize or downstaging a cancer is not unique in oncology. Whereas chemotherapy is mostly used in other types of neoplasm, various types of neoadjuvant therapy have been extensively investigated prior to surgery in such solid tumors as breast cancer. In prostate cancer the real benefit of NHT prior to radical prostatectomy is far from proven. The initial thoughts that hormone-withdrawal therapy would convert extracapsular prostatic tumors into organ-confined ones have quickly dissipated. Only a few points are generally agreed regarding the effect of neoadjuvant therapy before radical prostatectomy. One involves a clinical downstaging that has been found in pathological examination in the majority of cases. This significant downstaging usually holds truth for clinical T2 diseases, but not necessarily for clinical T3 disease. The precise role of hormone therapy prior to surgery or radiotherapy is a topic of considerable controversy, and none of the studies conducted thus far has produced definitive answers. Therefore, at present these modes of treatment should be included in protocols. New trends include the use of both neoadjuvant therapy in the same patients, but data are not yet available. Other areas of research, including endpoints, comparison of drug efficacy, and effects on quality of life are certainly of importance in the management of prostate cancer. One should not forget these important issues.

무선 애드 혹 기반 액티브네트워크상에서 QoS지원에 관한 연구

李基源,裵振勝,丁燦赫,金玄郁,李光培,姜景仁,朴京培,文泰洙,郭承郁,河載承 明知大學校 産業技術硏究所 2003 産業技術硏究所論文集 Vol.22 No.-

Abstract - In this thesis, we propose a QoS supporting method on wireless ad hoc-based active network for improving reliability. On the loss of route path, the existing DSR routing protocol has several problems with wireless network communication because of decease of data reception rate and increase of network load. The proposed method improves reliability of data transfer by using functions of active network. That is, by using functions of active nodes and active packets, the proposed method supports QoS with reservation transfer method that saves data packets on transfer at intermediate nodes with lost path and then re-transmit the packets after route reconfiguration.

오프라인 기반 가상공동체 구성원의 심리적 유형과 온라인 의사소통 매체에 대한 사회 연결망 분석

조남재,박기호,박상혁 한국정보사회진흥원 2006 정보화정책 Vol.13 No.4

오프라인 기반 가상공동체 활동을 위한 온라인 매체는 구성원간 사회적 관계형성을 위한 보완적 역할을 하고 있다. 온라인 의사소통 도구 중 전자우편과 메신저의 경우 개인간 뿐만 아니라 기업 내외적 활동에 있어서도 그 활용도가 중가하고 있다. 구성원간 사회적 관계형성과정은 심리적 성향 및 선호 커뮤니케이션 매체선택에 의해 영향을 받을 수 있음에도 불구하고 이에 대한 연구는 충분히 이루어지지 않았다. 따라서 심리적 성향과 온라인 매체 상에서의 네트워크 수준간의 관계에 대한 연구가 필요하다. 본 연구는 개인의 심리적 유형과 온라인 비동기 매체인 전자우편과 동기 매체인 메신저를 사용하는 구성원간의 사회연결망 관계를 연구하였다. 실증분석결과 내향사고형의 경우 메신저 상에서의 사회연결망 수준이 가장 높은 것으로 나타났으며, 전자우편의 경우는 외향사고형의 경우가 가장 높은 것으로 나타났다. 연구의 결과는 온라인상에서의 개인의 의사소통 방식에 대해 보다 이해의 폭을 넓힐 수 있으며, 심리적 성향에 따른 온라인 사회연계성 정도를 파악함으로써 온라인 마케팅활동과 관련한 시사점을 제공할 수 있을 것이다.

뇌자도 측정을 위한 저잡음 Nb SQUID 센서의 설계 및 제작

이용호,권혁찬,김진목,이상길,임청무,박용기,박종철 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

We report on the design, fabrication and performances of a low-noise Nb SQUID sensor for neuromagnetic measurements. The main features of the developed sensor are i) large flux-to-voltage transfer, making the SQUID readout electronics simple, and ii) use of the integrated planar pickup coil to eliminate the environmental magnetic field noises. The magnetic field noise of the developed SQUID sensor is below 5 fT/√Hz at 100 Hz, which is low enough to be used in neuromagnetic measurements.