• 한국수학교육학회지시리즈B:순수및응용수학
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• 제26권3호
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• pp.111-131
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• 2019

We introduce (CLRg) property for hybrid pair $F:X{\times}X{\rightarrow}2^X$ and $g:X{\rightarrow}X$. We also introduce joint common limit range (JCLR) property for two hybrid pairs $F,G:X{\times}X{\rightarrow}2^X$ and $f,g:X{\rightarrow}X$. We also establish some common coupled fixed point theorems for hybrid pair of mappings under generalized (${\psi},{\theta},{\varphi}$)-contraction on a noncomplete metric space, which is not partially ordered. It is to be noted that to find coupled coincidence point, we do not employ the condition of continuity of any mapping involved therein. As an application, we study the existence and uniqueness of the solution to an integral equation. We also give an example to demonstrate the degree of validity of our hypothesis. The results we obtain generalize, extend and improve several recent results in the existing literature.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제31권1호
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• pp.83-102
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• 2024

In this paper, first we establish a unique common fixed point theorem satisfying new contractive condition on partially ordered non-Archimedean fuzzy metric spaces and give an example to support our result. By using the result established in the first section of the manuscript, we formulate a unique common coupled fixed point theorem and also give an example to validate our result. In the end, we study the existence of solution of integral equation to verify our hypothesis. These results generalize, improve and fuzzify several well-known results in the existing literature.

• 아태비즈니스연구
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• 제11권4호
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• pp.177-188
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• 2020

Purpose - The purpose of this study was to examine the effect of government R&D programs on firm innovation activities. Design/methodology/approach - This study analyzed survey data on innovation survey in Korea. To investigate our research hypothesis we used ordered logit regression analysis. Findings - This study unveils different effects of diverse government R&D programs on firm innovation activities. Most of government programs-R&D tax incentives, information/training, and marketing supports-have positive effects on management innovation activities and negative effects of the usage of procurement programs on management innovation efforts. Some government programs-R&D tax incentives, R&D grants, information/training-have positive effects on technological innovation activities. Research implications or Originality - This paper investigates the effects of diverse government R&D programs on technological and management innovation activities. We examine simultaneous effects of multiple government R&D programs rather than effects of independent R&D programs. This result can contribute to develop more effective government R&D programs to support firm innovation activities.

• 아태비즈니스연구
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• 제11권3호
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• pp.47-61
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• 2020

Purpose - This study investigates the relationship between firm-specific, general human capital and corporate innovation performance. Also, we examine when this relationship is more salient. Design/methodology/approach - We collected 1,195 survey data related to a sample of corporate innovation performance and human capital from 1) Korea Research for Vocational Education and Training and 2) NICE information service in Korea. In order to examine the corporate innovation performance, we use the ordered logit model. Findings - First, we find robust supports for our hypothesis that firm-specific and general human capital increase corporate innovation performance. Second, the effect of general human capital on corporate innovation performance is stronger when this relationship is combined with the firm international experience. Research implications or Originality - By integrating the human capital theory and corporate innovation literature, we propose that firm-specific and general human capital are the important determinant of innovation performance. The firm-specific human capital may increase innovation efficiencies. Also, retaining higher-quality general human capital is considered as an important innovation strategy since firms with higher-quality general human capital make greater innovation performance. Further, we show that the firm international experience is the crucial boundary condition. As a firm's experience in internationalization increases, firms can enhance the opportunities to develop new products by combining the skills and knowledge derived from general human capital with the experience gained through internationalization.

• 한국노년학
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• 제30권4호
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• pp.1077-1093
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• 2010

본 연구는 서울과 춘천에 거주하는 노인 1,409명을 대상으로 노인의 영성과 종교 활동이 생활만족도와 우울에 영향을 미치며, 동시에 노인의 건강상태가 생활만족도와 우울에 미치는 부정적인 영향을 감소시키는 효과가 있는지를 분석하는데 목적을 두고 있다. 선행연구에서 노인의 건강수준, 생활만족도와 우울, 영성과 종교 활동은 성별에 따라 일관되게 유의미한 차이가 나타나 성별에 따른 영향도 포함하였다. 건강상태는 만성질환의 수로 측정하였고, 생활만족도는 PGCMS를, 우울은 CES-D를 적용하였다. 영성은 IE종교성 척도를 활용하였고, 종교활동은 종교모임에 참여하는 빈도로 측정하였다. 단계별 다중회귀분석을 적용하여 분석한 결과, 노인의 영성은 생활만족도와 우울에 영향을 미치지 않으나 건강상태가 생활만족도와 우울에 미치는 부정적인 영향을 감소시키는 효과를 지니고 있는 것으로 나타났다. 종교 활동은 노인의 생활만족도에는 영향을 미치지 않는 반면 우울에는 영향을 미치며, 건강상태가 생활만족도와 우울에 미치는 영향을 감소하는 효과가 있는 것으로 분석되었다. 본 연구 결과를 바탕으로 노인복지의 실천적 함의와 향후 연구를 위한 제안을 제시했다.