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윤영곤,윤경주,Yoon, Joseph YoungKon,Yoon, Kyungjoo DAEHAN Society of Industrial Management 2017 산업융합연구 Vol.15 No.2
본 논문은 알고리즘을 활용한 최적화를 바탕으로 한 시스템 다이내믹스 피드백 모델을 통해 고용 시뮬레이션의 특징을 제시하는 목적을 가지고 있고 직위, 근무기간, 계급 등의 요소를 중심으로 적정한 고용 인원을 제시하는 3차원 논리적 판단구조를 제공한다. 호주 육군의 고용정책에 대해 보다 신축적인 고용시스템을 제시할 목적으로 시스템 다이내믹스 모델을 통해 국방부의 변화가 심한 정책에 대한 안정적 고용 적정선을 파악한다. 특히 생산성을 최대로 발휘할 수 있는 필요한 고용 패턴 및 외부 인력의 고용, 내부인력의 타 조직으로 이동 등 다양한 가능성을 분석한다. This paper illustrates key features of an enterprise employment simulation which integrates a system dynamic feedback model with a cost-effectiveness optimisation capability utilising genetic algorithms. Its core is a 3-dimensional array structure tracking staff numbers by rank, by time-in-rank, by years-of-service. The resultant model, which could readily be adapted to non-Defence use, can identify, given user specification of any mix of employment rules, the likely patterns of employment behaviour including: resultant time-in-rank and years-of-service profiles; ability of a Unit to fill all positions to target strength; ability to fill promotional positions within normal rules for substantive promotion; need to fill promotional positions using rules for temporary promotion or transfer from outside; necessary recruitment pattern to sustain target strength.
관절경하 원위 쇄골 절제술을 이용한 만성 제 2형 견봉쇄골 손상의 치료 - 6례에 대한 예비 연구 -
유연식,윤영곤,남일현,문기혁,Yoo Yeun-Sik,Yoon Young-Gon,Nam Il-Hyun,Moon Gi-Hyuk 대한관절경학회 2002 대한관절경학회지 Vol.6 No.2
목적 : 저자들은 만성 제 2형 견봉쇄골 관절 탈구에 시행한 관절경하 원위 쇄골 절제술의 효과를 알아보고자 하였다. 대상 및 방법 : 1998년 2월부터 2001년 1월까지 제 2형 견봉쇄골 관절 탈구의 6례를 대상으로 시행하였으며 추시기간은 평균 12개월이었다. 검사의 결과의 평가는 constant-Murray 기능평가법을 이용하였으며 술 전 constant score는 32점 이었다. 결과 : 임상평가 결과 constant score는 술 후 $3\~6$주에서 35점 이었고 3개월은 49점 그리고 6개월에서는 69점으로 증가되었고 전체 환자의 $83\%$에서 만족도를 보였다. 결론 : 만성 제 2형 견봉쇄골 탈구에서 시행한 관절경하 원위 쇄골 절제술은 수기가 쉽고 간단하여 개방성 방법을 통한 광범위한 인대 재건술 또는 오구 쇄골간 고정술에 앞서 시행할 수 있는 방법이라 사료된다. Purpose : To evaluate effectiveness of arthroscopic distal clavicle resection for chronic stage 2 acromioclavicular dislocation. Material: 6 patients who had failed to respond to physical therapy were evaluate more than 6 months prospectively, which were treated with arthroscopic distal clavicular resection from february 1998 to January 2001. Result : The median preoperative Constant score changed from 32 of 100 to 37 of 100 at 3 to 6 weeks, to 49 of 100 at 3 months and to 69 of 100 at 6months. Improvement was achived at mean follow up more than 6 months after surgery. Overal $83\%$ of patient were satisfied with this procedure. but the remained case was unsatisfied because symptom was not improved more than 6 months Conclusion : Arthroscopic distal clavicle resection is useful method to treatment for chronic stage 2 acromioclavicular dislocation.
피부의 상피세포 종양에서 TGFα , EGF 및 EGF Receptor 발현에 관한 면역조직화학적 연구
최규철(Kyu Chul Choi),윤영곤(Young Kon Yoon),오창남(Chang Nam Oh) 대한피부과학회 1994 대한피부과학회지 Vol.32 No.3
Background : Seversl reporte have demonstrated that TGFa and EGF are mitogenic for keratinocytes. Whether its expressian on epithelial tumors is a marker of malgnancy or signifies an important step in the development of neoplasia is poorly understood. EGF receptors are also present in normal epidermis and epithelial tumors but their physiological roles are not yet understood. Objective : Our purpose was to examine the staining patterns of TGFa, EGF and EGF receptors on the epithelial tumors of the skin., and to investigate the kinetics of expresion of EGF receptors. Methods : We performed immunoperoxidase staining(ABC technique with monoclonal anti-TGFa antibody, polyclonal anti-EGF hntibody and polyclonal anti-EGF recepfor antibody on the formalin-fixed, paraffin-embedded tissue specimens of benign, premalignant and melignant skin tumors. Results : The density of the eixpression of TGFa and EGF was not or elated with the degree of the malignancy of the epithelial tumors and is neither constant in any kind of the tumors. However the infiltrative type of basal cell carcinoma(BCC) is stronger than its solid type on the expression of TGFa and EGF. All benign tumors demonstrated a diffusevattern within tumor lobules. Focal TGFe immunostaining were seen in three of 10 squamous cell carinomas(SCC) and four of 10 BCCs. TGFa immunostaining wias absent from the outermost one to two layers of tumor lobules of all keratoacanthomas. The specimens which increased the expression of TGFc and EGF tended to decrease the expression of EGF receptor. Conclusion : These data suggest that the density of immunohistocherrical expression of TGFa and EGF may be not dependent on the differentiation of tumor cells, and the pattern of immunohistochemical expression of TGFa can differentiate SCC from benign tumors sueh is keratoacanthoma. EGF receptor may be occupied by both of TGFa and EGF. With the receptor bring occupied a down regulation of the receptors may occur which results in decreased EGF receptor expression. (Kor J Dermatol 1994; 32(3): 438-445)
선박 해수배관에서 용접봉의 종류에 따라 직류 아크 용접한 용접부위의 부식특성에 관한 전기화학적 평가
이성열(Sung-Yul Lee),이규환(Kyu-Hwan Lee),원창욱(Chang-uk Won),나승수(Shane Na),윤영곤(Young-Gon Yoon),김윤해(Yun-Hae Kim),이명훈(Myeong-Hoon Lee),문경만(Kyung-Man Moon),김진경(Jin-Gyeong Kim) 한국해양공학회 2013 韓國海洋工學會誌 Vol.27 No.3
The seawater pipes in the engine rooms of ships are surrounded by severely corrosive environments caused by fast flowing seawater containing chloride ions, high conductivity, etc. Therefore, it has been reported that seawater leakage often occurs at a seawater pipe because of local corrosion. In addition, the leakage area is usually welded using shielded metal arc welding with various electrodes. In this study, when seawater pipes were welded with four types of electrodes(E4311, E4301, E4313, and E4316), the difference between the corrosion resistance values in their welding zones was investigated using an electrochemical method. Although the corrosion potential of a weld metal zone welded with the E4316 electrode showed the lowest value compared to the other electrodes, its corrosion resistance exhibited the best value compared to the other electrodes. In addition, a heat affected zone welded with the E4316 electrode also appeared to have the best corrosion resistance among the electrodes. Furthermore, the corrosion resistance of the weld metal zone and heat affected zone exhibited relatively better properties than that of the base metal zone in all of the cases welded with the four types of electrodes. Furthermore, the hardness values of all the weld metal zones were higher than the base metal zone.
신경릉 기원세포의 피부종양에서 S-100단백의 면역조직화학적 연구
윤영곤,신동식,정병수,최규철 朝鮮大學校 附設 醫學硏究所 1989 The Medical Journal of Chosun University Vol.14 No.1
By permitting of cell-specific antigens, immunohistochemistry adds a new dimension to the identification of cells not recognizable by morphologic features alone, It also has the advantage of being applicable to routine paraffin-embedded histologic sections. We examined the presence of S100 Protein in 33 cases of skin tumors derived from cells of neural crest origin, by immunohistochemical technique (ABC method). The results obtained are as follows : 1. Of 33 cases of skin tumors derived from cells of neural crest origin, 30 were positively stained for S100 Protein. 2. S100 Protein was found in most of tumora derived from Schwann cell and melanocyte but blue nevi and Ota nevi contained little or no S100 protein. 3. In pigmerited nevi, compound nevi and intradermal nevi were more strongly stain for S100 protein than junctional nevi. 4. The intensity of S100 protein immunostaining was far less in neurofibroma than in neurilemmoma and was strongest in malignant melanoma. 5. Our results suggest that S100 protein is widely distributed among pigmented nevi and melanotic tumors and is also a very useful diagnostic indicator for skin tumors derived from cells of neural crest origin.
강인경,윤영곤 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1
Dermatofibrosarcoma protuberans(DFSP) is an uncommon tumor that arises in the dermis. It is characterized by slow invasive growth, frequent local recurrence after excision and infrequent metastasis. We report a case of DFSP who presented with an erythematous, firm nodule with satellite lesion on the left quadrant of the abdomen in a 52-year-old female. Histopathologically, this tumor showed a uniform cellular proliferation of fibroblast in a storiform or cartwheel pattern in the dermis and subcutis. The peripheral portions of the tumor may have a deceptively bland appearance, approaching that of normal collagen.
최규철,윤영곤 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.1
One case of metastatic skin tumor from carcinoma of the ovary was reported with literature re-view. A 20-year-old woman had an episode of total hysterectomy and bilateral salpigo-ophorectomy under the diagnoisis of mucinous cystadenocarcinoma about one year ago. About 2 months ago, a nodule developed on the site of operation wound of the abdomen. Thereafter, multiple nodules developed succeedingly on the abdomen, back and scalp. The nodules were considered to be originated from carcinoma of the ovary in the view of histopathological, immunohistochemical and electron-microscopic finding.