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황희영 대한영상의학회 1993 대한영상의학회지 Vol.29 No.2
We retrospectively analyzed the CT (10 cases) and MR (5 cases) findings in 10 patients with radiation-in-duced pulmonary injury. On CT studies, 8 cases showed fibrotic change and 6 of them also showed solid consolidation with bronchi-ectasis. The differential diagnosis of radiation-induced injury from residual or recurrent tumor was possible on CT studies, 4 cases showed solid consolidation with bronchiectasis and fibrosis. The signal intensity was siointense compared with that of the muscle on T1WI (5 cases) and hyperintense on PDWI and T2WI (3 cases) The lesions enhanced well on Gd-DTPA enhanced study (4 cases). The residual or recrrent tumor showed the same signal intensity and degree of the anatomic details of the large overlapped area of increased density of the radiation-induced pulmonary injury on plain chest radiograph. But MR study is not superior to CT on the differentiation of the residual or recurrent tumor and radiation-induced injury because the tumor may show the same signal intensity and degree of enhancement with radiation-induced injury.
Convention의 관점에서 본 기업의 구조적 변화에 대한 해석
황희영 한국사회경제학회 2002 사회경제평론 Vol.18 No.-
In a Prisoners' dilemmatical situation between workers and managers in the firm, conventions help to avoid the mutually undesirable, but rational choice (ie. mutual non-cooperation) concerning labor effort and work condition. A strategic change of the firm, with a view to obtain higher performance, usually necessitates the change of conventions. Our argument based on a case study is that, when this change is perceived to be embarrassing, the coordinative structure of conventions turns into a Prisoners' dilemma. We interpret this paradoxical change by the theory of organizational learning.
黃熙榮 서울大學校經濟硏究所 1999 經濟論集 Vol.38 No.4
전통적으로 기업의 생산성은 투입-산출 관계에 의해서 기술 수준 혹은 노동과 자본의 양적 투입으로 측정되었다. 그러나 이 외에도 기업의 생산성 향상에는 새로운 원천이 존재하는데 그것은 '코디네이션'이다. 이 개념에 따르면 '內部的 摩擦'이 적은 기업을 보다 효율적인 기업이라고 할 수 있다. 기업간 경쟁이 글로벌화되고 사회적으로 정보화가 심화되면서 기업의 유연성과 신속한 대응이 기업 경쟁력에 더 중요해졌다. 내부적 마찰을 줄이는 것은 유연성과 신속성에 밀접한 관계가 있다. 본 논문에서는 '코디네이션'의 개념을 소개하고, 어떻게 마찰에 의한 비용이 발생하는지 밝히며, 실제 사례를 제시한다.
황희영 영산대학교 1999 영산논총 Vol.4 No.-
Coordination game shows the existence of multiple equilibria in the economy. Social choice among these equilibria necessitates understanding of coordination mechanisms between actors. In this context, rationality or decision-making under perfect information does not explain the process of this kind of social choice. This paper shows various coordination mechanisms obwerved on individual level and explains action principles of actors. Implications on economic science are added.