• 한국프랜차이즈경영연구
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• 제11권4호
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• pp.31-44
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• 2020

Purpose: The purpose of this study is to examine the effects of CEO's self-determination on entrepreneurship, business performance (operational and financial performance). Also, this research provide some strategic insights for improving business performance. In the proposed model, self-determination consists of autonomy, competence, and relatedness, and entrepreneurship consists of innovation, initiative and risk sensitivity, and proactiveness. More specifically, this study proposes a framework that entrepreneurship and operational performance will play mediating roles between self-determination and financial performance. Research design, data, methodology: In this study, an online survey was conducted on SME CEOs for analysis, and a total of 122 samples were used. In the analysis process for hypothesis verification and evaluation, frequency analysis was first performed to identify the demographic characteristics of the respondents, and confirmatory factor analysis was conducted to assess the reliability and validity of the measurement model. In addition, a structural model analysis was conducted to examine the structural relationships between CEO's self-determination, entrepreneurship, and business performance (operational and financial performance) using SmartPLS 3.0. Results: The findings and summary are as follows. First, the autonomy of self-determination has a positive effect on entrepreneurship. Second, the competence of self-determination affects entrepreneurship and operational performance. Third, it affects the innovation, initiative and risk sensitivity of the CEO's entrepreneurship, and ultimately, its operational performance. The results show that the business performance of Start-up also increases when self-determination can be a factor in increasing entrepreneurship in three sub-dimensionalities. Conclusions: The conclusion of this study is that in order for SMEs to develop into a sustainable company by securing competitiveness after start-up, external motivation such as external help and support from the state (local government) is important, but competence and relationship, which are components of self-determination. The intrinsic motivation of the CEO may be more important. To this end, CEO's should prioritize learning for competency development, and the government should pay attention to providing various educational programs through establishment of education policies and education systems to enhance the competency of start-up CEO's.

• Steel and Composite Structures
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• 제44권5호
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• pp.651-676
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• 2022

Most of the experimental, theoretical, and numerical studies on the stability of functionally graded composites are deterministic, while there are full of complex interactions of variables with an inherently probabilistic nature, this paper presents a non-intrusive framework to investigate the stochastic nonlinear buckling behaviors of porous functionally graded cylindrical shells exposed to inevitable source-uncertainties. Euler-Lagrange equations are theoretically derived based on the three variable refined shear deformation theory. Closed-form solutions for the shell buckling loads are achieved by solving the deterministic eigenvalue problems. The analytical results are verified with numerical results obtained from finite element analyses that are conducted in the commercial software ABAQUS. The non-intrusive framework is completed by integrating the Monte Carlo simulation with the verified closed-form solutions. The convergence studies are performed to determine the effective pseudorandom draws of the simulation. The accuracy and efficiency of the framework are verified with statistical results that are obtained from the first and second-order perturbation techniques. Eleven cases of individual and compound uncertainties are investigated. Sensitivity analyses are conducted to figure out the five cases that have profound perturbative effects on the shell buckling loads. Complete probability distributions of the first three critical buckling loads are completely presented for each profound uncertainty case. The effects of the shell thickness, volume fraction index, and stochasticity degree on the shell buckling load under compound uncertainties are studied. There is a high probability that the shell has non-unique buckling modes in stochastic environments, which should be known for reliable analysis and design of engineering structures.

• 한국콘텐츠학회논문지
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• 제15권8호
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• pp.236-257
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• 2015

본 연구는 윤리적 조직풍토, 윤리적 민감성 그리고 도덕적 고충이 사회복지사의 직무만족, 소진 그리고 이직의도에 어떠한 영향을 미치는지 규명하고자 시도되었다. 충남지역의 사회복지사 253명을 대상으로 실증 분석을 수행결과는 다음과 같다. 첫째, 사회복지사 소속기관의 윤리적 조직 풍토 인식이 직무만족도를 높이고 이직의도를 낮추지만, 소진과는 통계적으로 무의미했다. 둘째, 윤리적 민감성은 직무만족도에 긍정적 영향을 미치고 있으나 소진과 이직의도를 높이는 것으로 분석되었다. 셋째, 사회복지사가 직접적인 경험으로 유발되는 도덕적 고충이 직무만족도를 저하시키고, 소진이나 이직의도를 높이는 것으로 분석되었다. 이와 같은 결과로 사회복지조직의 윤리적 조직풍토 조성을 위해서는 청렴교육과 운영자의 윤리경영의식을 높여야 한다. 또한 사회복지사의 윤리적 민감성 제고를 위한 청렴교육 및 감수성 훈련이 필요하다는 시사점을 얻었다.

• Earthquakes and Structures
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• 제10권2호
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• pp.261-291
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• 2016

This paper deals with the seismic assessment of a real RC frame building located in Italy, designed according to the current Italian seismic code. The first part of the paper deals with the calibration of the structural model of the investigated building. The results of an in-situ dynamic identification test are employed in a sensitivity and parametric study in order to find the best fit model in terms of frequencies and modal shapes. In the second part, the safety of the structure is evaluated by means of nonlinear static analyses, taking into account the results of the previous dynamic study. In order to investigate the influence of the infills on the seismic response of the structure, the nonlinear static analyses are performed both neglecting and taking into account the infill panels. The infill panels differently change the behavior of the structure in terms of strength and stiffness at different seismic intensity levels. The assessment study also verifies the absence of brittle failures in structural elements, which could be caused by either the local interaction with infills or the failure of the strength hierarchy.

• Bulletin of the Korean Chemical Society
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• 제9권5호
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• pp.298-303
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• 1988

Kinetic studies on cupric ion ($Cu^{2+}$) oxidation of 1-benzyl- and 1-aryl-1,4-dihydronicotinamides (XNAH) in aqueous solution were performed. In the presence of dioxygen ($O_2$), the reaction followed first order kinetics with respect to both XNAH and $Cu^{2+}$. The oxidation reaction was found to be independent and parallel to the acid-catalyzed hydration reaction of XNAH. The catalytic role of $Cu^{2+}$ for the oxidation of XNAH in the presence of $O_2$ was attributed to $Cu^{2+}/Cu^+$ redox cycle by the reactions with XNAH and $O_2$. The second order rate constants of the Cu2+ oxidation reaction kCu, and acid-catalyzed hydration reaction $k_H$ were strongly dependent on the nature of the substituents in 1-aryl moiety. The slopes of log $k_{Cu}$ vs log $K_H$ and log $k_{Cu}$ vs ${\sigma}_p$ of the substituents plots were 1.64 and -2.2, respectively. This revealed the greater sensitivity of the oxidation reaction rate to the electron density on the ring nitrogen than the hydration reaction rate. A concerted two-electron transfer route involving XNAH-$Cu^{2+}$ complex was proposed for mechanism of the oxidation reaction.

• 한국정밀공학회지
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• 제22권10호
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• pp.137-143
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• 2005

The integrity of steam generator tubes in nuclear power plant should be maintained sufficiently during operation. For sake of this, complicated assessment procedures are required such as fracture mechanics analysis, etc. The integrity assessment of tubes has been performed by using conventional deterministic approaches while there are many uncertainties to carry out a rational evaluation. In this respect, probabilistic integrity assessment is considered as an alternative method for integrity assessment. The objectives of this study are to develop an integrity assessment system based on probabilistic fracture mechanics and to predict the failure probability of steam generator tubes containing an axial through-wall crack. The developed integrity assessment system consists of three evaluation modules, which apply first order reliability method, second order reliability method and Monte Carlo simulation method, respectively. The system has been applied to predict failure probability of steam generator tubes and the estimation results showed a promising applicability of the probabilistic integrity assessment system.

• 대기
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• 제30권4호
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• pp.335-346
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• 2020

Three free parameters included in a cumulus parameterization are optimized by using micro-genetic algorithm for three precipitation cases occurred in the Korea Peninsula during the summer season in order to reduce biases in a regional model associated with the uncertainties of the parameters and thus to improve the predictability of precipitation. The first parameter is the one that determines the threshold in convective trigger condition. The second parameter is the one that determines boundary layer forcing in convective closure. Finally, the third parameter is the one used in calculating conversion parameter determining the fraction of condensate converted to convective precipitation. Optimized parameters reduce the occurrence of convections by suppressing the trigger of convection. The reduced convection occurrence decreases light precipitation but increases heavy precipitation. The sensitivity experiments are conducted to examine the effects of the optimized parameters on the predictability of precipitation. The predictability of precipitation is the best when the three optimized parameters are applied to the parameterization at the same time. The first parameter most dominantly affects the predictability of precipitation. Short-range forecasts for July 2018 are also conducted to statistically assess the precipitation predictability. It is found that the predictability of precipitation is consistently improved with the optimized parameters.

• Journal of Preventive Medicine and Public Health
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• 제22권3호
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• pp.398-405
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• 1989

A change in the consumer's surplus was measured in order to evaluate the social benefit to be derived from expanding health insurance to the entire population. The most refined and correct way to measure a project's net benefit to society is to determine a change in the consumer's surplus. Benefits from introducing the health insurance program to the uninsured people can be classified into two elements. The first is the pricing-down effect(E1) which results from applying the insurance price system, which is lower than the actual price, to the uninsured patients. The second effect(E2) is a decrease in actual payment because an insured patient pays only a portion of the total medical bill(copayment). We collected medical price information from the data banks of 93 hospitals, and obtained information of medical utilization by referring to the results of other research and from data published by the Korean Medical Insurance Societies. The total net benefit was estimated as \214 billion, comprising the first effect(E1) of \57 billion and the second effect(E2) of \157 billion. The price elasticity of physician visits is less than that of hospital admissions: however, benefits from the increase in physician visits are greater than those from hospital admissions because there are considerably more of physician visits than hospital admissions. The sensitivity analysis also shows the conclusion that expansion of the health insurance program to the entire population would result in a positive net benefit. Therfore, we conclude that the National Health Insurance Program is socially desirable.

• 한국엔터테인먼트산업학회논문지
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• 제14권8호
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• pp.427-436
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• 2020

이 연구는 대학운동부를 대상으로 인권감수성 수준을 알아보고 변인 간 인권감수성의 차이를 비교·분석하는 데 목적이 있다. 이러한 연구의 목적을 달성하기 위해 한국대학스포츠협의회에 등록된 대학을 중심으로 10개 대학교의 운동선수 188명을 유층집락무선표집으로 설문조사하였다. 수집된 자료는 IBM SPSS 24.0 프로그램을 사용하여 빈도분석을 실시하였고, 신뢰도를 구하기 위하여 cronbach's α를 산출하였다. 대학운동부의 다양한 특성에 따라 인권감수성 수준의 차이를 검증하기 위해서 기술통계분석, one-way ANOVA, 사후검증 방법으로 Scheffe를 사용하였으며, 다음과 같은 결론을 도출하였다. 첫째, 에피소드 중 대학운동부의 인권감수성 점수가 가장 높게 나타난 에피소드는 이주노동자의 노동권과 노인의 행복권이며, 인권감수성 점수가 가장 낮게 나타난 에피소드는 구금으로부터의 자유권, 사생활권이다. 또한, 인권감수성의 하위요인 중 책임지각과 상황지각이 결과지각보다 높다. 둘째, 대학운동부 특성에 따른 대학운동부의 인권감수성은 학교운동부규모, 수상실적에 따라 유의한 차이가 있다. 셋째, 대학운동부의 교육특성에 따른 대학운동부의 인권감수성 수준은 유의한 차이가 있다.

• 디지털융복합연구
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• 제19권3호
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• pp.151-160
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• 2021

본 연구의 목적은 CSR이 경영자성과보상민감도에 미치는 영향을 확인하고, 지배구조가 효율적으로 운영되는지의 여부에 이러한 관련성에 차이가 나타나는지를 확인하는 것이다. 분석을 위한 표본은 2011-2017년 KOSPI상장기업을 대상으로 하였으며, 회귀분석을 수행하여 관련성을 확인하였다. 연구결과는 첫째, CSR을 수행하는 기업에서 회계성과보상민감도는 음(-)의 관계, 주식성과보상민감도는 양(+)의 관계가 나타났다. 둘째, CSR과 경영자성과보상민감도는 지배구조의 형태에 따라 달라지는데, CSR을 수행하는 기업에서는 지배구조가 효율적일 때 경영자보상제도와 대체적으로 상호 보완하는 역할을 하는 것으로 나타났다. 이러한 결과는 CSR을 수행하는 기업에서 경영자의 의사결정을 장기적인 관점에서 주주 이익을 높이는 방향으로 유인하기 위해서는 기업 내 효과적인 경영자유인보상제도를 설계할 필요성이 있음을 시사한다. 또한, 지배구조와의 관계를 파악하여 서로 중복되는 장치들을 줄이거나 개선한다면 기업 가치를 높이는데 기여할 수 있을 것이며, 이와 관련한 후속연구가 진행될 필요성이 있다고 판단된다.