• 대한수학회보
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• 제41권2호
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• pp.371-385
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• 2004

In this paper, we investigate the uniqueness of positive solutions to weak competition models with self-cross diffusion rates under homogeneous Dirichlet boundary conditions. The methods employed are upper-lower solution technique and the variational characterization of eigenvalues.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 춘계학술대회 논문집
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• pp.403-413
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• 1996

Two-phase self-organizing neuro-modeling (SONM). the global SONM and local SONM, is designed for tracking non-stationary manufacturing processes. Radial basis function (RBF) neural network is employed, and self-tuning estimator is also developed for the determination of RBF network parameters on-line. A pattern recognition approach is presented for identifying a correct RBF neural network, which is used for identifying current manufacturing processes. Experimental results showed that the proposed approach is suitable for tracking non-stationary processes.

• 유통과학연구
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• 제15권10호
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• pp.5-14
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• 2017

Purpose - This research aims to find the moderation roles of power states in the effects of four message types (competence self-referencing, competence self-defining, warmth self-referencing, warmth self-defining) on brand attitude. Research design, data, and methodology - A restaurant brand was used as an experimental object, and 4(message types: warmth self-defining message, warmth self-referencing message, competence self-defining message, competence self-referencing message) × 2(power: high power and low power) between-subjects design was employed. Through on-line survey in Nepal, we collected a total of 240 individuals composed of eight experimental groups with 30 members in Nepal. Results - Consumers under low power state formed more positive brand attitude at the warmth self-defining message than any other types of message, while under high power condition, there are neither the attitude differences between competence self-referencing message and competence self-defining message, nor those between competence self-referencing message and warm self-defining message. The significant attitude differences showed between competence self-referencing message and warmth self-referencing message. Conclusions - This study contributes to the advertising theory development. Restaurant store marketers should deliver warmth self-defining message rather than the other three types of message to consumers under low power state, and they should not deliver warmth self-referencing message to consumers under high power state.

• 노동경제논집
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• 제24권1호
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• pp.207-230
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• 2001

본 논문에서는 취업형태를 정규직 임금근로, 비정규직 임금근로 및 자영업의 세 유형으로 구분하여 한국노동패널 자료에 포함된 남자근로자들의 전직에 따른 취업형태의 변화를 살펴보았으며, 또한 경쟁적 위험도 모형을 추정함으로써 이들의 재취업시의 취업형태의 결정에 영향을 미치는 요인들에 대한 분석을 행하였다. 분석 결과에 의하면 퇴직한 일자리애서의 취업형태가 새 일자리에서의 취업형태를 결정하는 데에 중요한 영향을 미치며, 또한 직장이동이 반복되는 경우 그 영향력이 점차로 약화되기는 하나 직전 직장 이전에 취업했던 일자리에서의 취업형태도 새 직장에서의 취업형태의 결정에 영향을 미치는 것으로 나타났다. 즉 직전 직장에서 비정규직으로 근무하다 실직한 근로자는 전직 이전의 직장에서 정규직으로 취업했던 근로자에 비해 정규직에 재취업할 가능성은 크게 낮은 반면 또다시 비정규직에 재취업할 가능성온 크게 높은 것으로 분석되었다. 마찬가지로 퇴직한 직장에서의 취업 형태가 자영직이었던 근로자는 전직 이전의 직장에서 정규직으로 취업했던 근로자에 비해 정규직에 재취업할 가농성은 크게 낮은 반면, 또다시 자영직에 재취업할 가능성은 크게 높은 것으로 분석되었다. 이러한 분석결과는 우리나라 남자근로자의 경우 비정규직 또는 자영직 일자리가 막다른 일자리로서의 성격을 가진다고 단정할 수는 없다고 하더라도 일단 비정규직 또는 자영직에 취업한 근로자가 전직을 통해 정규직 일자리로 옮겨가기가 쉽지 않음을 보여주는 것이라 생각된다. 이와 함께 실업률이 높아질수록 정규직과 자영직에의 취업 가능성은 낮아지나 비정규직에의 취업 가능성은 오히려 높아지는 것으로 나타났는데, 이는 노동시장에서의 수급조건이 근로자에게 불리할수록 노동시장의 비정규화가 빠른 속도로 진행될 수 있음을 의미하는 것으로 해석된다.

• 한국직업건강간호학회지
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• 제17권1호
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• pp.34-44
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• 2008

Purpose: This study was conducted to find out the effects of self-efficacy on job stress symptoms and coping strategies depending on perceived job stress. Method: The subjects were 447 workers employed in a manufacturing company. Demographic characteristics, self-efficacy, job stress, job stress symptoms and coping strategies were assessed by a self-administered questionnaire. Each envelope to keep the secret sealed completed questionnaires. Result: Job stress and job stress symptoms in workers with a high level of self-efficacy were lower than those of a low level of self-efficacy. Active coping strategies in workers with a high level of self-efficacy group were higher than those of a low level of self-efficacy. In multiple regression analysis, job stress symptoms were significantly higher in increasing job stress, increasing self-efficacy, office workers, manager group and increasing age. Active coping strategies were significantly higher in increasing self-efficacy, increasing career, males and decreasing job stress. Whereas passive coping strategies were significantly higher in females, increasing job stress and increasing self-efficacy. Conclusion: This study suggests that self-efficacy is a significant factor on job stress, job stress symptoms and coping strategies. Therefore, developing a job stress management program to increase self-efficacy and verifying its effects are needed.

• Journal of the Korean Data and Information Science Society
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• 제23권6호
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• pp.1165-1172
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• 2012

본 연구의 목적은 노후소득보장의 한 방안으로 퇴직급여 제도의 현황을 조사하고 퇴직연금의 연금화 방안을 제시하는데 있다. 연구방법으로는 설문조사를 바탕으로 회귀분석 및 교차분석의 실증분석과 외국사례를 사용한다. 교차분석 결과 자영업자와 저소득층의 은퇴준비는 심각한 수준인 것으로 나타났다. 자영업자의 경우는 개인형퇴직연금의 확대, 저소득층의 경우는 독일의 리스터연금과 같은 제도의 도입이 필요하다. 퇴직연금의 연금화 방안과 관련하여서는 호주와 영국의 사례를 참조하여 제도를 개선하여야 할 것이다.

• KDI Journal of Economic Policy
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• 제26권1호
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• pp.35-69
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• 2004

본 연구는 1993~98년에 조사된 미시자료를 이용하여 한국 가계의 주식시장 참여패턴을 분석하고 이를 결정짓는 요인을 규명한다. 연구결과에 따르면 한국 가계의 주식시장 참여패턴은 기존 선진국에서 나타난 바와 같이 연령별로 역U자 형태를 보이고 있으며 소득이나 금융자산규모가 크고 교육수준이 높을수록 참여율이 높아지는 형태를 보이고 있다. 또한 주택보유 가계가 무주택 가계에 비해 높은 주식시장 참여율을 보이고 있으며, 이는 부분적으로 우리나라의 주택금융제도에 영향 받은 것으로 분석되었다. 한편 직종별로는 임금근로자 가계가 자영업자에 비해 높은 주식시장 참여율을 보이고 있어 우리나라의 상대적으로 높은 자영업자 비중이 가계의 주식시장 참여도를 낮추는 방향으로 작용하는 것으로 나타났다.

• 산업경영시스템학회지
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• 제34권4호
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• pp.106-113
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• 2011

Human resource theories of becoming entrepreneurs or self-employed rather than finding employment are compared as applied to fit the occupational data of technological entrepreneurs and technology jobs. The human capital theory posits that technological entrepreneurs are prepared to become a jack-of-all-trades with a variety of fields of education. Hobo theory of entrepreneurship assumes that entrepreneurs have strong taste against concentrating on a few activities, which tend to drive entrepreneurs away from employed jobs depressing their expected income. Another theory assumes that entrepreneurs have some unobserved productive qualities and abilities over employed people. Immigrant entrepreneurs could presumably be pressured out of employment under racial discrimination. Since technology jobs are mostly filled by those educated in the science and technology fields, and they presumably offer great reward to professional concentration, technological entrepreneurs may not benefit from becoming jacks-of-all-trades compared to finding employment in technological jobs income-wise. Asian immigrants in the 2000 US Census data are compared to white immigrants in technological jobs to test alternative human resource theories of entrepreneurship. Using English language ability as a proxy for the variety of education, I find in the white immigrant technological entrepreneurs support for the jack-of-all-trades theory, while in the Asian immigrant technological entrepreneurs hobo theory is supported. In the Asian technological workers only there appears the significant self-selection or comparative advantage component, while at the same time discriminatory components are significant.

• 한국경영과학회:학술대회논문집
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• 한국경영과학회/대한산업공학회 2005년도 춘계공동학술대회 발표논문
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• pp.599-606
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• 2005

Novelty detection involves identifying novel patterns. They are not usually available during training. Even if they are, the data quantity imbalance leads to a low classification accuracy when a supervised learning scheme is employed. Thus, an unsupervised learning scheme is often employed ignoring those few novel patterns. In this paper, we propose two ways to make use of the few available novel patterns. First, a scheme to determine local thresholds for the Self Organizing Map boundary is proposed. Second, a modification of the Learning Vector Quantization learning rule is proposed so that allows one to keep codebook vectors as far from novel patterns as possible. Experimental results are quite promising.

• 한국생활과학회지
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• 제11권2호
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• pp.149-167
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• 2002

The purpose of this study was to examine the entrepreneurship consciousness of the college students in Daejeon City. The following results were fund: First, the level of the entrepreneurship consciousness of the college students were very high. Second, the younger group tended to be more active in venturing during the college time. Third, the group over 23 years old tended to have higher level of the abilities as a man of enterprise. Fourth, students with the self-employed parents tended to be high level of entrepreneurship consciousness and their personal traits for the enterprise compared with other groups.