• Journal of Korean Society of Transportation
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• v.28 no.1
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• pp.77-86
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• 2010

The study developed physical distribution channel choice models reflecting decision making of the firms and studied how choice decision factors influence selection of distribution channel. The distribution channel survey data in Korea was used to do empirical study. As a choice set, distribution channels were classified into two main choice channels: direct and indirect channels. In addition, indirect channels were classified into other three channels according to the type of intermediate point: distribution center, wholesale store, and agency. This study developed choice models by applying both binary and multinomial logit model with various set of factors. The results showed that the developed logit models seemingly reflect distribution channel choice behaviors. The hypothesis tests on how each factor influences choice of distribution channel were performed and discussed as well.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.5
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• pp.3111-3120
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• 2015

This research analyzes the decision-making status of expected graduates depending on their Holland preference type, as well as the influence career worries have on vocational decision status. By discovering this mediating effect, career counselors can carry out counseling based on the variety of career worries college students have, further supporting self-actualization of the client. As the previous studies on group counseling programs and the effects of career counseling have not yet considered the difference between various types of career worries and carried out identical programs and counseling method, this study is significant in marking the emergence of differentiated counseling intervention and strategy for more effective career counseling. This research is based on a survey conducted on 606 expected graduates attending six 4-year universities in Seoul, Gyeonggi, Chungcheong areas. The students surveyed are in the second semester of their senior (4th)years, during two weeks from november 4, 2013. First, the results showed that the level of career worries and the type of career worries differed between college students that have different types of Holland preference, and such difference was meaningful. Second, examination on the influences that career worries have on different vocational decisions depending on Holland preference types, found that the state of anxiety-free and anxiety toward career and dependence, as one of vocational decision types, together work as mediators. In conclusion, the significance of this research lies on that it reveals the mediating effects that career worries have on vocational decision status of college students.

• Management & Information Systems Review
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• v.38 no.3
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• pp.171-186
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• 2019

The purpose of this study is to identify the effects of entrepreneurship on entrepreneurial efficacy and entrepreneurial intention, and to provide implications for analyzing mediating effects of career decision self-efficacy in bilateral relations. The data were collected from entrepreneurship, entrepreneurship students, and, and 220 students were surveyed. For the empirical analysis, frequency analysis, factor analysis, reliability verification, correlation analysis, and multiple regression analysis were performed using SPSSWIN 21.0. The specific analysis results are as follows. First, in the relationship between entrepreneurship and career decision-making self-efficacy, entrepreneurship has a significant effect on career decision-making self-efficacy. Second, in the relationship between entrepreneurship, entrepreneurship efficacy, and intention of entrepreneurship, entrepreneurship has significant influence on entrepreneurship efficacy and entrepreneurship intention. Third, the mediating effect analysis of career decision self-efficacy in the relationship between entrepreneurship, entrepreneurial efficacy, and entrepreneurship intention showed that all mediated effects were significant. The results of this study should be achieved through a convergence curriculum in which entrepreneurship education and career education can be considered at the entrepreneurial education stage in order to enhance entrepreneurship and intention to influence entrepreneurship and career choice. Practical implications were suggested for more effective education.

• Proceedings of the Korea Water Resources Association Conference
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• 2019.05a
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• pp.207-207
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• 2019

최근 우리나라는 지역 특성 및 기후변화의 영향으로 인해 수문학적 요소의 변동성이 커지고 수자원의 지속적인 관리에 있어 유출량은 중요한 문제로 여겨지고 있다. 특히 일부 소하천 또는 접경지역과 같은 미계측유역은 수문학적 요소에 대한 자료가 부족하고 수문모형의 초기치 설정과 과거 유출량 자료를 통하여 최적화한 매개변수를 결정해야하므로 장기유출분석이 어렵다. 본 연구의 적용유역으로 미계측유역인 임진강상류 유역에 대한 유출량 추정을 위해 계측 유역의 자료를 활용하여 모형의 매개변수 등을 추정하는 지역화 기법인 다중선형회귀분석과 공간근접분석을 활용하여 유출량을 산정 및 검증하였다. 또한, 확률론적 예측이 가능한 앙상블 기법 적용을 통한 유출량 예측을 하였고, 이를 예측 정확성 평가지표를 통해 효율성 검토를 수행하여 미계측유역의 유출량에 대해 확률론적 예측을 수행하였다. 대표적 지역화 기법의 적용성을 검토한 결과, 계측유역을 통해 다중선형회귀분석과 공간근접분석을 abcd 모형에 적용하였다. 모의유출량을 산정하고 실측 유출량과 비교 분석 결과 모의정확성이 높게 분석되었다. 이와 같은 검증 결과를 토대로 미계측유역의 유출량을 추정하였다. 또한, 지역화 기법을 앙상블 기법에 적용하여 확률론적 유출량 예측의 효율성을 검토하였다. 적용유역과 같은 지류를 포함하고 있는 임진강하류 유역을 대상으로 수행하였다. 검증기간(2013년~2017년) 동안의 월 예측 유출량 앙상블 생성을 위해 과거 강우량와 증발량(1988년~2012년) 자료를 사용하였으며, 지역화 기법을 적용한 abcd 모형을 이용하였다. 예측 유출량의 정확성 평가를 실시하였으며, 정확성이 비교적 높게 분석되었다. 이와 같은 결과를 토대로 미계측유역의 확률론적 유출량을 예측하였다. 따라서, 대표적 지역화 기법을 앙상블 기법에 적용하여 확률론적 유출량을 예측할 경우 보다 정확한 유출량 예측이 가능하다.

• Korean Journal of Cognitive Science
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• v.26 no.3
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• pp.279-300
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• 2015

Present research was carried out on the level of exploration to verify that good luck increases probabilistic framing effect but bad luck decrease the effect. And we organized an experiment that designed experience of luck (good luck vs. bad luck vs. control) ${\times}$ probabilistic frame (high vs. low) and observed whether people response based on probabilistic frame or not. As a result, we observed the two-way interaction where experience of good luck increased probabilistic framing effect, while experience of bad luck decreased the effect (Figure 1). We expect to see more studies of contextual framing effect besides probabilistic frame (e.g., positive vs. negative; loss related to context vs. loss irrelevant to context).

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.49 no.10
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• pp.829-839
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• 2021

Autonomous system for UAVs has a capability to decide an appropriate current action to achieve the goal based on the ultimate mission goal, context of mission, and the current state of the UAV. We propose a decision-making system that has an ability to operate ISR mission autonomously under the realistic limitation such as low altitude operation with high risk of terrain collision, a set of way points without change of visit sequence not allowed, and position uncertainties of the objects for the mission. The proposed decision-making system is loaded to a Hardware-In-the-loop Simulation environment, then tested and verified using three representative scenarios with a realistic mission environment. The flight trajectories of the UAV and selected actions via the proposed decision-making system are presented as the simulation results with discussion.

• The Journal of the Convergence on Culture Technology
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• v.7 no.1
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• pp.309-316
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• 2021

The purpose of this study is to verify the effectiveness of community-based learning(CBL) on career decision-making self-efficiency of junior college students and explore the meaning. This study was conducted on 68 students and 10 departments participating in the CBL, which was supported by the D University Faculty Learning Development Center in Busan. First of all, does CBL affect the career decision-making self-efficiency for junior college students? Second, what is the meaning of CBL for career decisions for junior college students? The effectiveness of the CBL's before and after application surveys has shown statistically significant changes in the career decision-making self-efficiency. The meaning of CBL for learners' career decisions was derived from "improving understanding through on-site application of theory and creating confidence and commitment in their career paths by providing an opportunity to study." Through this, it can be seen that CBL is worth applying as a teaching method suitable for career guidance of junior college students.

• Journal of Advanced Navigation Technology
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• v.28 no.3
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• pp.262-271
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• 2024

In this paper, by applying deep learning, one of the A.I. techniques, through angle information, which is optical observation data generated when observing satellites at observatories, distance information from observatories is learned to predict range data, thereby increasing the precision of satellite's orbit determination. To this end, we generated observational data from GMAT, reduced the learning data error of deep learning through preprocessing of the generated observational data, and conducted deep learning through MATLAB. Based on the predicted distance information from learning, trajectory determination was performed using an extended Kalman filter, one of the filtering techniques for trajectory determination, through GMAT. The reliability of the model was verified by comparing and analyzing the orbital determination with angular information without distance information and the orbital determination result with predicted distance information from the model.

• Korean Journal of Cognitive Science
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• v.28 no.2
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• pp.91-109
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• 2017

The purpose of the research was to examine the relative effect of binocular disparity and T-junction on the determination of object's belongingness in brightness perception when regular repeating structure was present in the stimuli. Using Howe's stimuli, the variation of White illusion stimuli, Experiment 1 found that object's belongingness was mainly determined by monocular information (T-junction as well as regular repeating structure) rather than by binocular disparity when both informations on belongingness were inconsistent. Experiment 2, using the stimuli employing only regular repeating structure and binocular disparity, found that object's belongingness was not determined by any single information. These results imply that when the regular repeating structure and binocular disparity are inconsistent on object's belongingness, T-junction plays an important role in the determination of the object's belongingness and that the brightness perception is affected by it.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.12 no.1
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• pp.73-85
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• 2017

The purpose of this study is to investigate the effect of career uncertainty and career education on entrepreneurship and entrepreneurial intention of potential entrepreneur in Korea. A total number of 381 potential entrepreneurs responded to the questionnaire. The collected data were analyzed by SPSS Statistics 22. The results of the empirical analysis are as follows: First, career uncertainty did not have a significant effect on entrepreneurial intention. Second, career uncertainty had a negative(-) effect on entrepreneurship. Third, career education had a negative(-) effect on entrepreneurial intention. Fourth, career education did not have a significant effect on entrepreneurship. Fifth, career uncertainty had a negative(-) effect on self-determination. Sixth, self-determinism was found to fully mediate the relationship between career uncertainty and entrepreneurial intention. Seventh, self-determination was found to fully mediate the relationship between career uncertainty and entrepreneurship. Based on these results, it is necessary to expand and strengthen the scope of career education of students by lowering the uncertainty of career and reinforcement of intrinsic motivation through self-determination in order to improve student's entrepreneurship and entrepreneurial intention. At the same time, institutional efforts to include entrepreneurship education in career education should be concurrently accompanied by efforts to improve self-determination of potential entrepreneurs.