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라운드 리클라이너 개발을 위한 정적 강도 해석 및 안전성 평가
정윤구,임재규,김형종 江原大學校 産業技術硏究所 2004 産業技術硏究 Vol.24 No.A
Seat is one of the most important part of an automobile for passenger's safety especially when an accident happens. A recliner is a part of the seat assembly, having the function of adjusting the back-plate angle of a seat. Recently, many kinds of vehicles have adopted the round recliner module rather than the conventional types of recliners because of its broad compatibility and structural simplicity. In this study a two-dimensional finite element strength analysis has been performed using a commercial code ABAQUS/Standard for the purpose of developing a new round recliner model. The loading condition for the analysis is the same as the FMVSS 301 regulation. The finite element result for the round recliner has been compared with that for the conventional type.
박희전,나중호,정윤구 大韓成形外科學會 1992 Archives of Plastic Surgery Vol.19 No.2
The management of open lower leg fractures with extensive soft tissue and bone loss is a difficult task, and it often results in many complocations. the open fractures in lower extemity are usually sustained by high-energy trauma, and the extent of real injury is much greater than that of initial estimation of injury. The form of treatment should be conformed to several criteria of injury: mechanism of injury, severity of fracture, contamination of wound, and associated soft tissue and bone defects. With the cooperation from the Department of Orthopedic Surgery, eighteen patients with Gustilo's typeⅢ? lower leg fractures underwent reconstructive operations in a period from September, 1990 to July, 1991; 14 cases were open tibia fractures, and 4 cases were lateral ankle fractures. The definite soft tissue reconstruction was carried out in an average of 58 days after the trauma. The surgical treatment consisted of fracture fixation, radical debridement, muscle flap coverage and bone graft. 9 patients reveived free muscle flap, 8 received medial gastrocnemius or soleus muscle rotation flap, and one had local fasciocutaneous flap. In case of bone gap, bone graft was carried out simultaneously with soft tissue reconstruction. The short-teum follow-up of the 18 patients with an interval f 6months in average showed favorable results: One case of free muscle flap and two cases of vascularized bone graft failed. Non-union resulted in one case, and one had amputation. Two patients could ambulate without assist device each 26 and 30 weeks postoperatively. To obtain sucessful outcome of treatment, the authors advocate following guidelines of teatment: 1) Rigid fixation of fracture 2) Radical debridement of devitalized tissue 3) Reconstruction of soft tissue defect with free or local muscle flap as early as possible 4) Appropriate and aggressive bone graft 5) Close cooperation between orthopedic surgeons and plastic surgeons 6) Early and aggressive rehabilitation
이명선,정윤구,이혜경,신극선 大韓成形外科學會 1989 Archives of Plastic Surgery Vol.16 No.6
The nipple-areola complex is a crucial aesthetic unit of the breast. It is especially important in women because the breasts embody feminity and sexuality. Congenital and acquired deformities or absence of the nipple-areola would result in significant and long-lasting psychological trauma and altered body image. The authors reconstructed nipple-areola using a local flap with a subcutaneous base for nipple reconstruction and full thickness skin graft from the upper inner thigh for areolar reconstruction. We present our experiences using this method in six patients who received modified radical mastectomy due to breast cancer, one patient with nipple necrosis after surgery for correction of inverted nipple, two patients with nipple necrosis who received subcutaneous mastectomy due to paraffinoma, and one patient with hypoplastic nipple due to hermaphroditism. Also we conluded as follows; 1.The procedure is simple. 2.This method is widely applicable to various conditions. 3.The color match is satisfactory and donor site morbidity is minimal. 4.In inverted nipple, the fibromuscular bands have to be released.
Contrastive Negation, Emphatic do and Left-Edge Ellipsis
박범식(Bum-Sik Park),정윤구(Philip Yoongoo Jung),오세랑(Sei-Rang Oh) 한국생성문법학회 2021 생성문법연구 Vol.31 No.3
In this paper, we examine contrastive negation of verbal elements in English (e.g. Mary should not praise but denounce John.). As noted by McCawley (1998), when the auxiliary do substitutes for the modal in this example, the verb in the second conjunct must be tense-inflected. However, we observe that with emphatic do, the verb can be in its base form. We argue that the contrast arises because emphatic do (but not non-emphatic do) allows coordination of verbal element. We also argue that the contracted negator n’t invariably functions as sentential negation and thus requires tense-inflection on the verb in the second conjunct (e.g. Mary didn’t praise but denounced John.). In contrast, the uncontracted negator not can function as either constituent or sentential negation, giving rise to structural ambiguity. We further contend that the identical form surfaces through the process of Left-Edge Ellipsis.