• Journal of Information Processing Systems
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• 제14권2호
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• pp.487-498
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• 2018

The purpose of the high-speed railway construction is to better satisfy passenger travel demands. Accordingly, the design of the train working plan must also take a full account of the interests of passengers. Aiming at problems, such as the complex transport organization and different speed trains coexisting, combined with the existing research on the train working plan optimization model, the multiobjective bi-level programming model of the high-speed railway passenger train working plan was established. This model considers the interests of passengers as the center and also takes into account the interests of railway transport enterprises. Specifically, passenger travel cost and travel time minimizations are both considered as the objectives of upper-level programming, whereas railway enterprise profit maximization is regarded as the objective of the lower-level programming. The model solution algorithm based on genetic algorithm was proposed. Through an example analysis, the feasibility and rationality of the model and algorithm were proved.

• 한국IT서비스학회지
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• 제13권4호
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• pp.275-287
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• 2014

Recently, the volume of unstructured text data generated by various social media has been increasing rapidly; consequently, the use of text mining to support decision-making has also been growing. In particular, academia and industry are paying significant attention to topic analysis in order to discover the main issues from a large volume of text documents. Topic analysis can be regarded as static analysis because it analyzes a snapshot of the distribution of various issues. In contrast, some recent studies have attempted to perform dynamic issue tracking, which analyzes and traces issue trends during a predefined period. However, most traditional issue tracking methods have a common limitation : when a new period is included, topic analysis must be repeated for all the documents of the entire period, rather than being conducted only on the new documents of the added period. Additionally, traditional issue tracking methods do not concentrate on the transition of individuals' interests from certain issues to others, although the methods can illustrate macro-level issue trends. In this paper, we propose an individual interests tracking methodology to overcome the two limitations of traditional issue tracking methods. Our main goal is not to track macro-level issue trends but to analyze trends of individual interests flow. Further, our methodology has extensible characteristics because it analyzes only newly added documents when the period of analysis is extended. In this paper, we also analyze the results of applying our methodology to news articles and their access logs.

• 한국초등수학교육학회지
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• 제13권1호
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• pp.31-49
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• 2009

본 연구에서는 교육과정 속에서 수학교구의 구체적인 활용방안과 그 과정에 대해 연구하여 현행 교육과정에서의 수학교구 활용 수업에 도움을 주는데 목적을 두고, 수학교구를 수학수업에 활용한 후, 학습 능력 수준에 따른 학생들의 반응과 수학교구와 관련된 문제해결 과정에서 학습 능력 수준에 따른 교구 활용 의존도를 분석하였다. 그 결과, 수업이 진행되는 동안 모든 학습 능력 수준에서 높은 흥미도가 관찰되었고, 학습 능력 수준별로 교구를 활용하는 모습이 조금씩 다르게 나타났다. 또한, 학습 능력 수준이 낮을수록 높은 교구 활용 의존도를 나타내었으나, 교구에 대한 전적인 의존은 하 수준의 학생들에게 나타나는 무조건적인 현상이 아님이 관찰되었다.

• 농촌계획
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• 제20권1호
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• pp.135-145
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• 2014

This research analyzed the effects of satisfaction factors of rural experience of city dwellers. The main research results are summarized as follows. The selection attributes for the rural experience of urbanites were divided into their interests into the programs, variety of the programs and convenience of the facilities. According to the multiple regression analysis, interests into the programs had impacts on the level of satisfaction. The types of rural tourism had statistical relevance with people's interests into the programs, convenience of the facilities and variety of the programs. In addition, those at the age of 40 to 50 reported higher satisfaction in their interests of the programs and convenience of the facilities among the general attributes of the respondents. In occupation, office workers had higher satisfaction in their interests into the programs while homemakers were more satisfied than others in convenience of the facilities and variety of the programs. When it comes to the monthly family income, those in the group who earn 2 to 3 million won a month had higher satisfaction in terms of convenience of the facilities and variety of the programs.

• 한국생활과학회지
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• 제15권1호
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• pp.177-185
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• 2006

The purpose of this study is to research middle school students' interests in the housing education contents of Technology Home Economics Subject - to classify the contents into three units, we have application of living space, indoor environment and equipments, support and repair of housing. This study has a subject of 529 middle schoolers living in Jeonbuk province. In this statistical analysis, SPSS program was utilized to analyze percentage, mean and standard deviation. These materials were also verified by t-test. The results of this research were as follows: Middle school students' interests in housing education contents stayed at a mid-level. There was a significant difference in contents interest according to their gender - boys appeared to have a higher interest than girls. On the basis of these results, it can be suggested that these results offer fundamental information for improving students' critical practice in their real life. Since this study has conducted a limited research with a topic of housing education only, it is essential that further research covering a wider array of themes be done in the future.

• 대한가정학회지
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• 제37권1호
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• pp.157-167
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• 1999

This study was designed to identify the recent status of the catalog and on-line apparel shopping in Korea and compare to those in the U.S.. Data were gathered from 308 respondents in Korea and 112 in the U.S. by the on-line survey. The results are as follows; 1) The U.S. consumers had more apparel shopping experience and higher level of satisfaction than Korean consumers about the catalog and on line apparel shopping, 2) Although the residents in Taejon area had less apparel shopping experience using catalog and on-line facilities than those in Seoul area, they showed higher level of interests about on-line shopping in Korea. 3) Male respondents had more shopping experience using pc-net and internet than female respondents, and the interests about on-line shopping of the younger group were higher than those of the older age group.

• 한국초등과학교육학회지:초등과학교육
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• 제35권1호
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• pp.123-135
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• 2016

Interest is one of the important factors in science education. The purpose of this study was to investigate factors affecting the follow-up interest of elementary school students on topics of 'Small Organisms' World'. The follow-up interests of the students on the topic were grouped into three categories; the developed-expanded-deepened (EDD), the simply expanded and maintained (SEM), and the stoped or decreased (SD) types. Each types had specific distinguishing features. Through the examination of students' responses and the in-depth interviews, the factors affecting on the follow-up interests of the students were analyzed. The factors were classified into two types of the external factor and the internal one. While the external factors were mainly related to the instructional materials used in science class and teaching methods, the internal factors were related to the desire for knowing, prior knowledge, students' experience and attitude toward the topics of science. In relation to the types of the follow-up interests, these factors were affected by different causes. The EDD type was most affected by internal factors, such as desire for knowing and prior knowledge. The SEM type was shown to be most affected by external factors, such as instructional materials. The SD type was mainly influenced by external factors, such as teaching methods. From the analysis of internal factors, it was revealed that the attitude and the prior knowledge about the topic are related with the follow-up interests. There was a positive relationship between the levels of science attitude and science knowledge. The students who had EDD type had a higher level of attitude and knowledge. However, there were some students who had higher level of scientific knowledge with SD type. The results of in-depth interviews showed that they were influenced by negative perceptions about science and stress on their grades. In conclusion, each follow-up interest type were caused by the external factors contained in the processes of the science class and the internal ones associated with the individual features and were influenced by the science class. So, the teacher should help the students be able to have the EDD type of follow-up interest which is persisted even after the completion of the science curriculum. For this, when the teachers design science curriculum and plan lesson, they should consider both internal and external factors significantly influencing the students' follow-up interests.

• 한국환경생태학회지
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• 제16권3호
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• pp.287-295
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• 2002

본 연구는 도시공원의 효율적 관리를 위해 모색되고 있는 도시공원의 주민참여관리제도의 이론적 토대와 기초자료를 마련하기 위한 목적으로 수행되었다. 이를 위해 서울시 도봉구의 초안산근린공원을 찾은 이용객들을 대상으로 사회.경제적 특성, 공원에 대한 관심도, 공원의 관리현황에 대한 인식, 공원관리에의 참여의사 등을 내용으로 설문조사를 실시하였으며, 회수된 75부의 설문지 중 유효표본은 63부였다. 응답자들의 공원에 대한 관심도가 비교적 높게 나타났으며, 공원의 관리현황을 긍정적으로 인식하고 있었다. 공원관리에의 참여의사에 있어서 응답자들은 비교적 강한 참여의사를 지니고 있었으며, 이러한 경향은 노령층과 고소득층, 공원에 대한 관심도가 높은 응답자에게서 더욱 강하게 나타났다. 특히, 공원에 대한 관심도 수준에 따른 공원관리에의 참여 의식 차이는 기존의 연구결과를 뒷받침하는 것이었다.

• 디지털산업정보학회논문지
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• 제9권2호
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• pp.41-54
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• 2013

In this paper, We collected location based services of the user's past moving paths through the GPS. Using the collected by location-based services through the analysis of the similarity between the user's of service level agreement recommended of mobile contact area(SLA) proposed that can be. S-RCA method based on Service Level Agreement of the users in order to provide the service user's path distance, time, and to predict the direction of the movement paths and collect. The data collected by the interests and requirements of users through classification with the same interests and the needs of users to move between the analysis of the similarity between the path is used to analyze the results of analysis of the path-specific tolerance range (distance, time, and space) is determined according to the difference in the contact area. From a small area of the error range for users first to recommended and through their smartphones recommended contact area (S-RCA) to meet with the other party to make a choice of recommended methods. We verify through experiments that proposed method(S-RCA) a valid and reliable mobile contact area were recommended.

• 기술혁신연구
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• 제26권1호
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• pp.59-83
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• 2018

대학 교원 창업은 기술 이해도가 높은 고급인력의 기술창업으로 일반적인 기회 형 창업보다 성장성 및 파급효과가 높은 양질의 창업 유형이다. 이러한 장점에 주목하여 정부는 대학 교원 창업 활성화를 위한 노력을 지속해오고 있다. 그러나 현행 법규 및 관련 제도는 교원 창업에 대한 명확한 정의뿐만 아니라 교원 창업과 관련한 주체들(대학, 교수, 대학원생 등)간 이해가 충돌하는 상황을 고려하지 못한 상태에 머물러 있다. 이로 인하여 대학 교원창업과 관련한 여러 유형의 이해충돌 문제가 발생하고 있고, 이는 교원 창업을 더욱 어렵게 만들고 있다. 이에 본 연구에서는 학술적 관점에서 대학 교원 창업 관련 논의를 종합하고, 대학 교원 창업의 이해충돌 문제를 체계화 및 유형화하였고, 한국과 미국 주요 대학의 교원 창 관련 제도를 비교분석하였다. 이를 바탕으로 국내 대학 교원 창업의 문제점을 진단하고, 활성화 방안을 제안하였다.