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High Velocity Projectile에 의한 上肢의 말초신경 손상
장종호 최신의학사 1977 最新醫學 Vol.20 No.8
Both low and high velocity projectiles which either directly or indirectly damage the nerve cause not only severe injury in the path of the wound but -will extend several centimeters. This type of trauma can also cause gross destruction of nerves and other tissues, which lead to scarring thus a poor bed for, the during its repair. This paper emphasizes that the high velocity injury even though the nerve has its continuity, a burning and/or concussion may cause severe destruction of its sheath and cell mass. Even though nerve has retained its continuity it should be explored if it dose not return to normal function within an expected time. An end-to-end anastomosis or nerve graft should be done after complete resection of damaged nerve segment. This paper examine 87 cases of nerve damage due to gun shot wound with result as follow; A) Nerve with continuity; 35 cases (40.2%) which included 11 median nerve, 12 ulnar n., 9 radial n., mixed nerve injury median and ulnar were 3 cases. B) Nerve without continuity; 52 cases (59.8%) which included 16 median nerve, 17 ulnar n., 14 radial n., mixed injury median and ulnar were 5 cases. Mixed nerve injury median and ulnar n. 1 case in the upper arm, and 7 cases in the forearm. The time for spontaneous recovery of the upper arm injuries were average 5 weeks in the musculocutaneous n., 8 weeks (4-9 wks) for the radial n., 10 weeks (6-12 wks) for the median n., and 12 weeks (8-18 wks) for the ulnar n.. Pathological changes of the damaged nerve observed by light and electron microscope which showed blistering and edematous swelling 1.5 cm at both proximal and distal portion. Nerve injury by indirect effect revealed degeneration of the nerve tissue and occlusion of the vaso nervorum 1.2 cm in length. This study indicates that in both severed or unsevered nerve resulting from gun shot wound we should wait for specific period of time prior to surgical repair to receive maximum functioning of the extremity.
인터넷 침해사고로 인한 기업의 경제적인 피해 산출 모델 및 케이스 연구
장종호,정기현,최경희,Jang, Jong-Ho,Chung, Ki-Hyun,Choi, Kyung-Hee 한국정보처리학회 2008 정보처리학회논문지 C : 정보통신,정보보안 Vol.15 No.3
최근 우리 사회는 인터넷과 네트워크의 발전에 따라 자유롭게 정보를 공유하거나 습득하게 되었다. 그러나 인터넷의 발전으로 인해서 그에 대한 역기능도 나타나게 되었다. 대표적인 역기능이 바로 인터넷 공격이다. 인터넷 공격은 여러 분야에서 많은 피해를 주는데, 특히 경제적인 측면에서의 그 피해는 어마어마하다. 특히 기업의 경우는 이런 경제적인 피해에 민감하다. 그러나 국내에서는 이런 인터넷 공격으로 인한 경제적인 피해를 산정하는 모델에 관한 연구가 미비하다. 따라서 본 논문에서는 인터넷 공격으로 인한 경제적인 측면의 피해를 산출하는 하나의 모델을 제시하고 그 모델의 기준에 따라 가상적인 인터넷 공격의 경제적인 피해를 산정할 것이다. Because of the internet development, most of people can acquire the information freely. But it have the disadvantages. A remarkable thing among the disadvantages is the internet attack. Internet attacks were given damages to several fields. Specially, the damage is terrible to the economic side. Specially, company is susceptive to economic damage side. But it didn't execute a research about model that estimates damage to the economic side due to internet attacks. This paper presents a model that estimates the damage to economic side due to internet attacks.
張宗鎬,高鳳炫,文命相,金泳祚,鄭求明,李鍾武 최신의학사 1971 最新醫學 Vol.14 No.3
The Giant cell tumor is quasi-malignant in nature. Therefore, clinically there are many complica?tions in its progress. The natural complications are metastasis, pathological fracture, recurrence, and death. The post operative complications are local recurrence, seeding, non-union and post-operative infection, etc.. . The choice of treament is generally known to be segmental resection with or without bone graft. The preventive measurement for tumor recurrence is needed which consist of en block excision inc?luding healthy soft tissue 0.5-1.0 cm wide from capsule of the tumor. Through the experiences in trea?ting a case of the soft tissue recurrence of the giant cell tumor in distal radius which is treated by autogenous fibular replacement bone graft after segmental resection, it is stressed that tumor surgery is more to be radical than palliative surgery, and the review of literatures concerning the recurrence and its treatment is done.
시멘트 종류별 콘크리트의 적산온도에 의한 강도예측에 관한 연구
장종호,나철성,김재환,김용로,길배수,남재현,김무한 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
The purpose of this study is to exhibit fundamental data which can apply to quality and process management of structure concrete using special cement in the construction field investigating strength prediction by maturity method of concrete according to cement types. The activation energy value was derived from the experimental study that experimental factors were selected as W/C ratio of 45%, the kinds of cements of 3 levels of O.P.C, H.B.C, H.S.C and curing temperature of 3 levels of 5℃, 20℃, 35℃. Also, after investigating relationship between compression strength and equivalent ages of concrete according to cement types, the strength prediction was investigated by maturity method. As the above of results, differences between the prediction strength by strength prediction equation and the actual measurement strength were lower, therefore it is considered that the strength prediction by maturity method is possible not only concrete using normal portland cement but also concrete using special cement.