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기업의 생존요인 연구 : 국내 소프트웨어 기업을 중심으로
박강민,김준연 기술경영경제학회 2018 Journal of Technology Innovation Vol.26 No.4
본 연구는 콕스회귀분석과 누적한계추정법으로 1995년부터 2015년까지 1,084개의 국내 소프트웨어 기업을 분석하고, 생존율과 생존의 결정요인을 밝히는 것이다. 분석 결과 생존율의 경우, IT서비스, 패키지 소프트웨어, 게임 소프트웨어, 인터넷 서비스 각 분야별로 다른 형태를 보였다. 또한 연구개발 투자와 기업의 매출액 및 자산증가율로 나타나는 성장성은 생존에 긍정적이었으며, 여유자원은 부정적인 영향을 미쳤으며, 나이와 규모는 그 영향을 찾을 수 없었다. 이러한 결과는 소프트웨어 기업의 생존 전략과 정부의 지원 정책에 있어서 산업과 기술의 특성을 고려해야 한다는 점을 시사한다. 본 연구는 90년대 말 외환위기라는 특수 상황이나 제조업 중심으로 진행된 국내 생존분석의 영역을 최근 중요성이 커지는 소프트웨어 산업으로 확장했다는 의미가 있다. This article analyzes the survival of Korean software firms from 1995 to 2015 by Cox regression model and product-limit method. The results show that survival rates are different for each sector: IT service, package software, game software and internet service. In addition, firm growth and investment in research and development positively affect software firm’s survival, while slack resources negatively affect the software firm’s survival. The implication of this study is that characteristics of the software industry and technologies should be taken into consideration in survival strategy of software firms and government policy. Previous research on survival analysis has been mainly conducted in the manufacturing industry or at the special circumstance such as the foreign exchange crisis of Korea in the late 1990s. The contribution of this study is that expanding the survival analysis to software firms in Korea which are becoming more important recently.
항진된 심부건 반사를 보인 급성 운동 전도차단 신경병증
박강민,배종석,김상진,김종국 대한신경과학회 2008 대한신경과학회지 Vol.26 No.1
A 38-year-old man developed weakness in all limbs 3 days prior to admission. Motor examination showed decreased strength in the limbs, but sensory examination was normal. Deep tendon reflexes were hyperactive. Electrophysiological examination showed conduction blocks with nearly normal conduction velocities and terminal latencies in the motor nerves and normal amplitudes and velocities in the sensory nerves. Acute motor conduction block neuropathy with hyperreflexia may be another variant of Guillain-Barre syndrome.
뒤아래소뇌동맥 영역 경색 후에 발생한 소뇌인지정동증후군
박강민,김응규,김상진,공보금 대한신경과학회 2008 대한신경과학회지 Vol.26 No.4
A number of brain imaging and human lesion studies suggest an involvement of the cerebellum in various cognitive functions. A 60-year-old woman developed dizziness due to cerebellar infarction. One month later, she developed cognitive decline, delusion, irritability, impulsive and violent behavior. Cognitive and behavioral symptom onset, neuroimaging findings and neuropsychological test led us to the diagnosis of cerebellar cognitive affective syndrome.
다리뇌 경색의 단독증상으로 발생한 핵간 눈근육 마비 1예
박강민,배종석,김상진,김응규 인제대학교 2008 仁濟醫學 Vol.29 No.-
Internuclear ophthalmoplegia (INO) is caused by a lesion involving the medial longitudinal fasciculus (MLF) that interconnects the ocular motor nuclei. A 65-year-old woman with diabetes for twenty years developed diplopia, nausea, and vomiting one day before the presentation to the emergency room. Examination revealed adduction impairment of the right eye, combined with dissociated abducting nystagmus in the left eye. Other findings of the neuro-logical examination were normal. T2-weighted brain magnetic resonance imaging showed a hyperintensity lesion in right medial pons where the MLF locates. INO may be an isolated manifestation of pontine infarction.
경북 유학산, 천생산과 성암산 일대의 식물군락유형 분석
박강민,김종현,정현아,강치욱,이종운 嶺南大學校基礎科學硏究所 2002 基礎科學硏究 Vol.22 No.-
At the area of Yuhak, Cheonsaeng and Seongam mountains in Kyeongbuk, we studied the vegetation patterns with 75 plots on the base of Braun-Blanquet methods from March to October 2002. For the analysis of community patterns with 75 plots we used interspecies Affinity analysis method, DECORANA and TWINSPAN. The investigated area was divided into 17 communities with 177 species, and 20∼100% of treelayer, 10∼95% of shrublayer and 20∼100% of herblayer. By toe method of affinity analysis, it showed a big community with 86 species, but divided into 6 small groups by ordination and classification methods. Although it appeared as one group by the affinity test, the area divided into two groups by classification method at second level with eigenvalue of 0.320 and 0.430. It shows that the area of Yuhak, Cheonsaeng and Seongam mountains have own properties and in the process of succession.