글로벌 벤처_연변 - 한중 IT 비즈니스 허브로 거듭나는 '연변'

유대진,Yu, Dae-Jin 벤처기업협회 2009 벤처다이제스트 Vol.129 No.-

전 세계 IT 기업들은 중국 시장을 공략하기 위해 아낌없는 투자와 노력을 병행하고 있다. 한국 기업들 또한 아직까지는 저렴한 인건비 부분의 이점을 생각하고 진출을 하고 있는 상태이나, 추후 중국 현지 시장이 바로 세계 시장임을 아는 기업들은 현지 공략을 하기 위해 이미 준비를 마친 후 진출을 하고 있다. 하지만 해외시장 진출은 그 과정 자체가 녹록치 않다. 여는 국가처럼 중국으로 진출 시 기업들은 시간과 투자 방식, 사업진행 방향, 현지의 IT 인프라 및 인력 고용 등 여러 가지 당면과제에 맞닥뜨린다. 이를 해결하기 위해 기업들은 많은 시간과 자금을 비롯한 시행착오를 거치는 것 또한 사실이다. 그렇다면 가장 효율적이고 성공적인 해외시장진출의 첫 번째는 바로 사업환경이 잘 정비된 지역을 선택하는 것이 아닐까. 이번호에서는 중국의 여러 지역 중에서도 IT 기업의 진출에 최적화된 환경을 가진 연길(延吉)을 주도로 하는 연변조선족자치주를 살펴본다.

불안정성 경추손상 환자에서의 Halifax Interlaminar Clamps를 이용한 후방고정술 : 추척조사 결과 Follow-up Study

유대진,양의중,장석정 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.1

The most common severe cervical spine injury involving the posterior elements is subluxation or dislocation in which the posterior ligamentus complex is completely tom. Late instability is more common than previously realized, because ligamentous structures do not reconstitute normally, even with prolonged external rigid fixation. Subluxation of the cervical vertebrae in a flexion injury can be reduced by skeletal traction ; however, they usually require posterior stabilization. Unilateral and bilateral facet dislocation freqently require open reduction and posterior stabilization. The authors have used interlaminar clamps for the stabilization of thirty cases of unstable cervical spine. Advantages of this method are 1) immediate and rigid stabilization without cord injury. 2) early ambulation and prevention of respiratory complication and pressure sore. And also, posterior cervical stabilization with Halifax clamps is an easier, safer and faster technology in treatment of unstable spine.

내경동맥-안동맥 동맥류에 대한 경막외 및 경막내 접근술

유대진,장석정,신호 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.8

The authors report seven cases of carotid-phthalmic artery aneurysms who were surgically treated using the combined extradural-intrddural or intradural approach from March, 1991, to December, 1993. Carotid-ophthalmic hitery aneurysms are of considerably surgical interest because some of these were considered to have technical difficulties of clipping and disastrous surgical results. Removal of the anterior clinoid process and unroofing of the optic canal are the key points to exposure the operative field adequately. On the basis of these experiences, authors concluded that this approach is very useful, bacause of adequate surgical field and better mobilization of the internal carotid artery and optic nerve for direct clipping of carotid-ophthamic artery aneurysm and basilar tip aneurysm.

일부 양 · 한방 병원에 입원한 뇌혈관질환 환자의 특성 비교

유대진(Dae-Jin Yu),류소연(So-Yeon Ryu),박종(Jong Park),김기순(Ki-Soon Kim) 한국농촌의학 지역보건학회 2001 농촌의학·지역보건 Vol.26 No.1

중뇌에 발생한 뇌낭미충증 1례

안수영,유대진,장석정 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

The authors experienced one case of cerebral cysticersocsis that located in midbrain. The patient was a 46-year-old man presented with eyeball movement disorder. He was treated by ophthalmologist for 2 weeks but, there was no symptomatic improvement. The intraparenchyma! neurocysticercosis on midbrain was well delineated with Magnetic Resonance Image. The patient was underwent subtemporal-ptehonal combined approach with complete removal of cyst from the midbrain. We discussed summary of case, operation finding, pathophysiology of neurocysticercosis and treatment.

추체 제거술, 추체간 골이식 및 Kaneda 기구를 이용한 척추고정술을 시행받은 흉요추부 질환 환자의 임상적 고찰

정성헌,유대진,송진규,이승명,조하영,장석정,신호 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.7

Among the 98 patients who underwent operations for thoracolumbar spinal lesions from May 1989 to September1994. the authors performed clinical analysis of 72 patients who were followed-up for more than 12 months Thsre were 52 cases of trauma. 18 cases of tuberculous spondylitis. and f cases of mstastatic tumor After partial or total vertebrectomy. interbody fusion was performed using autogenous iliac bone or autogenous ribs which were taken While approaching the thoracic Spine. and Stabilized Using Kaneda devices Complete neural decompression was possible under direct vision in all cases Neurologic deficits improved to an average of 1.7 grades using a modified frankel scale. Patients with tuberculous spondylitis did not show recurrence or any evidence of increased risk of secondary infection caused by instrumentation Loosening or breakdown of instruments occurred in 4 patients and spinal deformity in 7 patients. but reoperation was not nseded in any of these patients By anterior decompression. interbody fusion and stabilization using Kaneda device in thoracolumbar spinal lesions. we could obtain satisfactory neurologic improvement as well as immediate firm stability and high fusion rate involving only a minimum(usually two) number of motion segments as compared with the posterior approach

후방가동분절을 이용한 후방경유 요추유합술 및 척추경 나사못 고정술을 시행한 협부형 척추골전전위증 환자의 수술적 치료

안수영,유대진,송진규,이승명,조하영,장석정,신호 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.11

저자는 1993년 12월부터 1995년 7월까지 23례의 협부형 척추골절전위증 환자에서 후방 가동 분절을 이용한 후방경유 추체유합술 및 척추경 나사못을 이용한 후방 고정술을 시행하여 다음과 같은 결과를 얻었다. 1) 술 후 즉각적으로 방사통, claudication 및 요통이 만족할 만큼 소실되었고 신경근의 과다 견인으로 인한 방사통이나 근력 약화가 나타난 경우는 없었다. 2) 추적기간 중 척추 간격이 약간 좁아졌으나 임상적 의의는 없었고 전전위증이 다시 진행한 경우는 없었다. 3) 술 후 척추 전전위가 평균 20%에서 10%로 감소되었다. 4) 술 후 6~24개월 사이에 전례에서 골 유합을 보였다. 결론적으로 예가 적고 추적기간이 충분치는 않으나 상기 수술 수기에 의해 척추골 전전위증 환자를 수술 할 경우 일반적인 견해와는 달리 단순 추간판 수술(simple disc operation0시보다 양호한 수술 결과를 얻을 수 있다고 사료된다. Twenty three patients with isthmic spondylolisthesis were operated on from December 1993 to June 1995. There were 14 female and 9 male patients and the average age of the patients was 50(ranging 20-67) years old. Symptoms in the lower extremities had been present for 3 months to 10 years, although varying degrees of back pain had existed for longer periods. Disability was caused mainly by claudication in 20 patients. Diagnostic studies included plain films, tomography, CT scanning, and MRI. Single interspace was involved in 18 patients, and in five patients, two interspaces were involved. After wide decompression and discectomy, stabilization was reestablished by segmental pedicular screw fixation device(Dapason^(??) pedicular system) and interbody fusion using posterior movable segment as graft material. Between 6 to 24 months postoperatively, all patients exhibited radiographic fusion. The results were excellent in 12 cases, good in 8 cases and fair in 3 cases. The authors believe that full four nerve roots decompression, pedicular screw fixation, posterior lumbar interbody fusion using movable segment as graft material, and prevention of nerve root traction injury during insertion of graft bone are important points to get good post-operative results.

복강 경유 전방 접근술로 치유한 요천추부의 결핵성 척추염 1례

김영기,유대진,이성태,양의중,장석정,신호 대한신경외과학회 1993 Journal of Korean neurosurgical society Vol.22 No.10

Bone and joint involvement develops in approximately 10 percent of patients with tuberculosis and half of these affected patients have tuberculosis of the spine. In the treatment of tuberculous spondylitis evacuation of the contents of the abscess, including the bone sequestra and the sequestrated intervertebral discs, combined with removal of all avascular bone and anterior fusion with a strut graft has widely applied since Hodgson and Stock published their successful results in 1960. Surgical approaches to the vertebral bodies at different levels, either anterior, anterolateral or modified approach, have been described in order to improve the exposure. The upper lumbar vertebral lesion is well exposed by the lateral or anterolateral approaches. But exposure of the lumbosacral lesion is limited because of iliac bone and other surrounding vital organs. We describe a surgical approach to lumbosacral spine which allows an adequate exposure of the vertebral bodies from L₄to S₁. The transabodminal midline approach seems to be useful method for the lumbosacral vertebral body lesion, allows adequate exposure and easy reconstruction.

과도한 출혈을 동반한 다발성 안면부 외상 환자의 치험례

오성섭,유대진,김일규,최진호,김형돈,오남식,황홍준,Oh, Seong-Seob,Yoo, Dae-Jin,Kim, Il-Kyu,Choi, Jin-Ho,Kim, Hyung-Don,Oh, Nam-Sig,Hwang, Hong-Jun 대한악안면성형재건외과학회 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.1

Multiple facial trauma patient should be carefully treated because of severe bleeding on extraoral and intraoral wound, possibilty of airway obstruction and hypovolemic shock. Hypovolemic shock may be divided to hemorrhagic shock and non-hemorrhagic shock. Also hemorrhagic shock is divided to mild, moderate and severe shock according to the degree of blood volume depletion. Mild shock occurs in blood loss of less than 20% of blood volume and moderate shock does in blood loss of 20-40% of blood volume. And Severe shock occurs in blood loss of more than 40% of blood volume. The goal of emergency care of trauma patient is that respiration and perfusion should be recovered to satisfactory level and that normal vital sign is maintained. We reported the case of multiple facial trauma patient with severe bleeding and hopovolemic shock and metabolic acidosis who was treated with adequate supply of fluid transfusion, intubation, tracheostomy and emergency operation.

고혈압성 천막상부 뇌실질내출혈이 있는 혼수상태 환자에서 뇌정위적 혈종제거술 및 뇌실외배액술의 결과

홍성봉,유대진,송진규,양의중,장석정,신호 대한신경외과학회 1994 Journal of Korean neurosurgical society Vol.23 No.11

The purpose of this study was to analyze and evaluate therapeutic results of stereotactic evacuation of hematoma, urokinase irrigation and external ventricular drainage(EVD) in comatose patients who had hypertensive supratentorial intracerebral hemorhage. The authors carried out stereotactic evacuation of hematoma and external ventricular drainage in the consecutive 45 cases who were admitted to the Department of Neurosurgery, Chosun University Hospital, from Sep. 1990 to Jun. 1993. The therapeutic results were as follows : 1) The peak age incidences were 6th to 7th decades. The incidence was higher in female than male. The age was not related to the prognosis. 2) The hematoma was located at the basal ganglia in 37 cases, and the thalamic area in 8 cases. The prognosis was poorer as the area of hematoma extended more wider and deeper. 3) The volume of hematoma ranged from 8 to 155㎖. The prognosis of the patient was unfavorable in large volume of hematoma. 4) Intraventricular hemorrhage(IVH) occured in forty cases(89.9%) and motality rate was 45%. The mortality rate was increased in cases with IVH than in cases without it. 5) The motality rates based on the Glasgow coma scale(GCS) on admission were 50% in GCS score 4 group, 50% in GCS score 5 group, 40% in GCS score 6 group, 27% in GCS score 7 group. Cases of low Glasgow coma scale on admission showed high mortality rate. 6) The overall motality rate was 42%. These results suggest that stereotactic evacuation of hematoma and EVD decreased the mortality rate when compared with conservative treatment and conventional craniotomy in the literatures.