• The Korean Journal of Financial Management
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• v.15 no.2
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• pp.1-22
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• 1998

본 논문은 조건부이분산모형을 이용하여 주가수준이 상대적으로 낮아지면 레버리지가 높아져서 변동성이 크게 나타난다는 레버리지효과 가설과 기업규모가 변동성에 미치는 영향을 우리나라 증권시장에서 실증분석하였다. 변동성(變動性)에 대한 레버리지효과(效果)에 관한 연구는 1992년 1월 3일에서 1996년12월 27일까지 5년간 표본기업 71개의 일별 주식수익률 퍼센티지자료를 사용하여 분석하였다. 분석에 사용한 조건부이분산모형은 '수정된 EGARCH'모형이며 이 수정된 EGARCH모형의 분산식에 개별기업의 주가수준을 독립변수로 하여 레버리지효과를 분석하였다. 분석결과는 변동성의 주가탄력성 계수가 음(陰)(-)의 값을 보이긴 하였으나 통계적으로 유의적이지 못하였다. 그러나 유의수준 10% 이하에서 의미를 가지는 변동성 주가탄력성 파라메타를 가진 표본이 전체표본의 50.7%를 차지하여 경제적 의미를 과소평가할 수 없는 것으로 보였다. 또한 기업규모가 변동성과의 관계를 실증분석하기 위하여 비모수적인 방법인 스피어만 순위상관분석을 이용하였다. 그 분석결과 미국의 연구결과와는 달리 우리나라에서는 기업규모가 클수록 변동성의 주가탄력성이 커지는 것으로 나타났다. 이 같은 원인은 기관 및 법인투자가와 외국인투자가의 투자비중이 높아지면서 대형주 위주의 매매패턴에 기인하는 것으로 보여진다. 이상으로 볼 때 기업규모는 변동성의 또 다른 요인으로서 설명할 수 있을 것으로 보인다.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.723-732
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• 2022

The success of enterprise information system(EIS) is crucial to align with corporate strategies and eventually attain corporate goals. Since one of the factors to information system success is system use, managerial efforts to measure the level of EIS utilization is vital. In this paper, the EIS utilization level is analyzed using system access log data. In particular, process sequence patterns and clustering of similar functions are identified in more detail based on a process mining method, in addition to basic access log statistics. The result of this research can be used to improve existing information system design by finding real IS usage sequences and function clusters.

• Korea Trade Review
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• v.43 no.4
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• pp.69-88
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• 2018

Using a panel data set covering 19 Korean manufacturing sectors for the period 2009-2015, this paper investigates the extent to which industry characteristics affect the mode of entering foreign markets. The estimation results across various specifications show that firms prefer affiliate sales to export as firm heterogeneity increases, implying positive effects of productivity regarding foreign relative to domestic operations. The motive for overseas production is reinforced as economies of scale at the plant level decrease and economies of scale at the corporate level increase.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.14 no.2
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• pp.221-233
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• 2019

In Korea, small and medium sized domestic enterprises(SMEs) play an pivotal role in the national economy, accounting for 99.9% of all enterprises, 87.9% of total employment, and 48.3% of production. and SMEs was driving a real force of the development of national economy in many respects such as innovation, job creation, industrial diversity, balanced regional development. Despite their crucial role in the national development, most of SMEs suffer from a lack of R&D capabilities and equipments as well as funding capacity. Public R&D institutes can provide SMEs with valuable supplementary technological knowledge and help them build technological capacity. so, In order to effectively support SMEs, government and public R&D institutes must be a priority to know about the factors influencing the performance related to technology transfer and technological collaborations. In particular, SMEs are not only taking up a large portion of the national economy, but also their influence in politics and economy so strong that raising the competitiveness of small and medium-sized companies is a national policy goal that must be achieved in order to achieve sustained economic growth. For this reason, it is necessary to look specifically at the relationship between concepts such as the environment, strategy, and organizational culture surrounding the enterprise to enhance the competitiveness of SMEs. The paper analyzes 665 companies to find out which organizational culture affects their performance by classification and type of business of SMEs. This study demonstrated that when SMEs seek consistency in their external environment, strategies, and organizational structure to maintain their continued competitiveness. According to three-way analysis of variance (3-way ANOVA) indicates that classification of industries in SMEs has statistically significant main effects, but the type of business and organizational culture do not have significant effects. However, the company's organizational performance (operating profit) of SMES were found to differ significantly in comparison between groups according to classification standards of industries, and therefore adopted some parts. In addition, an analysis of the effect of interaction between the three independent variables of small and medium-sized enterprises has shown that there are statistically significant interaction effects among classification, types of business, and organizational cultures. The results shows that there is an organizational culture suitable for each industry classification and type of business of an entity, and is expected to be used as a basis for establishing promotion policies related to the incubation and commerciality of small and medium-sized venture companies in the future.

• Journal of Technology Innovation
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• v.24 no.2
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• pp.143-175
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• 2016

In this study, we have analyzed the impact of firm, innovation and industry characteristics on firm's appropriation strategy focusing of the relative preference of patents and trade secrets by using the Korea Corporate Innovation Survey 2005, 2010 and 2014 data. According to the analysis results, companies with characteristics such as venture, high-technology industry, receipt of public R&D subsidies, performing product innovation, high R&D expenditure, prefer patents to trade secrets relatively. However, firm size and R&D cooperation did not have a statistically significant effect on the relative preference. This shows that policy on appropriation system considering the industry characteristics may be more effective. Companies in the industries with a high market concentration showed that trade secrets are preferred, especially these characteristic was distinctly in small and venture companies. This means that the increase in strategic patent applications of the incumbent firms is able to restrict the patent activities in small and venture companies. Because the excessive increase in strategic patents is likely to constrain the innovation activities of small and venture firms ultimately, policy initiatives to limit the abuse of strategic patent applications is required.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.12
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• pp.611-620
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• 2016

Firms grow in a competitive environment and competition can be a source of corporate growth. In an increasingly global market, companies face increased competition. As such, it is natural that all firms face some degree of risk due to competition. While firms compete for market share, they also imitate competitors in order to minimize risk that accompanies competition. This research attempts to demonstrate the effects of inter-firm competition on investment decisions. Using idiosyncratic equity returns as the instrument variable, this paper uses a two-stage least squares regression, as well as an ordinary least squares (OLS), to identify the influence of peer firms' investment decisions on a firm's own investment strategy. The results confirm that firms show stronger imitative behavior with more intense competition. Also, firms with higher debt ratios show higher peer group influence. This imitative factor provides clues to measure the risk-averseness in investment decisions.

• 정보보호뉴스
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• s.137
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• pp.54-57
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• 2009

방통위가 지난 3월초 우리나라 민간영역의 개인정보보호 수준을 측정한 개인정보보호지수를 발표했다. 개인정보보호지수는 민간부문 의 개인정보보호 수준측정과 정부의 정책성과 평가 및 정책방향 수립 등을 위해 지난 2007년부터 실시한 것으로, 2008년 하반기에 실시한 정보보호 실태조사 결과를 반영해 최초로 공개한 자료다. 이번 자료에 따르면, 2008년 민간영역의 개인정보보호지수는 64.3점으로 2007년 결과인 52.2점에 비해 크게 개선된 것으로 나타났다. 기업 영역 세부지표와 개인영역 세부지표로 구성된 이번 조사결과를 통계를 중심으로 살펴보자.

• Proceedings of the Korean Statistical Society Conference
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• 2001.11a
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• pp.169-174
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• 2001

최근 정보기술 분야의 급속한 발전과 더불어 기업 및 사회 각 분야의 데이터베이스에 쌓이고 있는 데이터의 양도 급격히 증가하고 있으며, 이러한 관점에서 데이터마이닝이 큰 주목을 받고 있다. 따라서 다양한 데이터마이닝 기법들이 연구되고 있으며 데이터마이닝을 보다 손쉽게 수행할 수 있는 여러 상용화된 소프트웨어들이 개발되어 있다. 이들 데이터마이닝 소프트웨어들은 여러 가지 관점에서 서로 다른 모습을 가지고 있는데, 따라서 이들의 기능과 성능은 많은 사용자들의 큰 관심이 되고 있다. 본 연구에서는 현재 널리 사용되고 있는 몇 가지 데이터마이닝 소프트웨어들에 대해 기능상의 차이점 및 실제 사용에 있어서의 효율 등을 비교하고자 한다.

• Proceedings of the Korean Statistical Society Conference
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• 2001.11a
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• pp.199-204
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• 2001

1997년 IMF 경제위기 이후 우리나라의 금융산업은 급격한 변화를 겪고 있다. 지난 4년간 은행들을 비롯한 금융기관들이 대형화를 통한 경쟁력 강화를 위해 합병이 실시되었다. 은행합병의 궁극적인 목적은 합병에 의해 규모를 대형화하고 업무범위를 다양화하여 수익규모를 증대시키고 수익원을 다원화하는 한편, 경영자원의 투입과 활용을 효율화하고 시장지배력을 확충하여 경영성과를 제고함으로써 기업가치를 증진시키는데 있다고 할 수 있다. 본 연구에서는 1997년 이후에 본격적으로 이루어진 합병은행들을 대상으로 맘퀴스트 ${\ulcorner}$Malmquist${\lrcorner}$ 총요소생산성(Total Factor Productivity) 지수를 사용하여 그 성과를 측정해 보았다.

• The Korean Journal of Applied Statistics
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• v.4 no.1
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• pp.65-83
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• 1991

In order to know the situation of statistical Quality Control in Korea, we have surveyedabout 4, 500 manufacturing companies in Korea. Among the first 4, 500 manufacturing companies, 2, 586 companies have answered for the questionairs of the sample survey. In this research a statistical analysis is conducted for the 2, 586 companies and diagnosis of the situation of Statistical Quality Control is Korea in presented in terms of levels of development and degrees of implementation.