• 한국융합학회논문지
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• 제11권9호
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• pp.21-29
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• 2020

최근 디지털 사회의 도래로 다양한 데이터가 폭발적으로 증가하고, 그중 문헌 내 주제어를 도출하는 토픽 모델링에 관한 연구가 활발히 진행되고 있다. 본 논문의 연구목표는 토픽 모델링 방법 중 하나인 DTM(Dynamic Topic Model) 모델을 적용해 D.N.A.(Data, Network, A.I) 분야에 대한 연구동향을 탐색하는데 있다. 실험 데이터는 최근 6년간(2015~2020) ICT(Information and Communication Technology) 분야 중 기술대분류가 SW·AI에 해당하는 연구과제 1,519개 사업에 대해 DTM 모델을 적용하였다. 실험결과로, D.N.A. 분야의 기술 키워드 Big data, Cloud, Artificial Intelligence와 확장된 의미의 기술 키워드 Unstructured, Edge Computing, Learning, Recognition 등이 매년 연구에 표출되었으며, 해당 키워드 들이 특정 연구과제에 종속되지 않고 다른 연구과제에서도 포괄적으로 연구되고 있음을 확인하였다. 끝으로 본 논문의 연구결과는 향후 D.N.A. 분야에 대한 정책기획·과제기획 등 연구개발 기획 과정과 기업의 기술 확보전략·마케팅 전략 등 다양한 곳에 활용될 수 있을 것으로 기대한다.

• 문화기술의 융합
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• 제4권4호
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• pp.107-114
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• 2018

전환기의 발달장애학생이 여가활용 교과과정을 통해 스스로 여가를 찾고, 즐길 수 있는 능력을 함양하고, 지역사회 프로그램을 통해 실제 지역사회 여가의 자원들을 활용할 수 있는 독립적인 능력을 적용하기 위해서는 여가활용의 교과과정과 지역사회 자원의 연결이 구비되어야 한다. 이를 위해서는 교과과정으로서의 여가활용을 지도하는 교사의 여가활용 인식이 전제가 되며, 지역사회 기반의 여가활동 참여시 언급되는 개선점과 중요도에 대한 검토가 필요하다. 발달장애인의 평생계획과 관련한 최근의 연구들은 기존 요소에서 여가활동을 확장하고 있으며, 이는 총체적인 측면에서의 준비가 필요함을 의미하고 있다. 본 연구는 문헌자료를 바탕으로 발달장애학생의 여가활동의 중요한 자원으로서 학교 현장에서의 여가활동과 지역사회여가활동의 중요성에 초점을 맞추고, 여가활동의 접근성을 높일 수 있는 지원방안을 제공하고자 한다.

• 동아시아경상학회지
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• 제4권2호
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• pp.12-27
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• 2016

This study aims to investigate the effects of foreign students' entrepreneurship on start-up recognition and intention. Due to the expanded policy of attracting foreign students with current Korean wave, it has rapidly increased the number of foreign students in Korea. The number of foreign students in Korea has increased from 50,000 up to 100,000 in 2012. Approximately half of number was resided in Seoul capital, surrounding satellite cities and followed by Kyeongsang, Chungcheong and Jeolla province regions. In this study, we examined the correlation of entrepreneurship with start-up recognition and intention of foreign students living in Daejeon city. The research model was constructed with entrepreneurship and start-up intention as independent and dependent variable, respectively, and start-up recognition as a moderating variable. Furthermore, the entrepreneurship of foreign students as independent variable contains innovativeness, pro-activeness, risk-taking and social responsibility. In the survey, we collected 119 responding foreign students belonging to KAIST, Chungnam National University and Hanbat National University and analyzed the correlations of these variables with 116 significant answers. To validate the hypotheses, linear regression analysis tool in SPSS program was used. As a result of the survey, entrepreneurship components such as innovativeness, pro-activeness, risk-taking and social responsibility affected start-up intention positively. In addition, start-up recognition as a moderating variable affected positively between entrepreneurship and start-up intention. However, it has the limitation to generalize the overall correlation of entrepreneurship with start-up recognition and intention for foreign students living in Korea because the survey was only performed in restricted Daejeon city area. Nonetheless, this study can be useful for understanding the foreign students's trait for entrepreneurship and planning the adequate entrepreneurship education.

• 농촌계획
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• 제14권2호
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• pp.33-42
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• 2008

Recently, rural leisure by urban dwellers has been recognized as a catalyst for regional development or restoration. The federal government implemented several regional planning policies attempting to address this phenomenon in the late nineties. However, most of these policies focused on supply-centered planning, which caused a diverse set of problems relating to the sustainability and economic validity of the planning. Instead, this study focuses on the re-visitation one of the demand variables, with the intention of analyzing the character of rural leisure demand and its re-visitation choice attributes. For these reasons, this study investigates the character of current rural leisure demand, and develops functional equations about urban people who visit rural areas, using logit model. The results of this study can be summarized as follow: Urban people are visiting rural areas from nearby cities or metropolitan areas that are within 3 hours driving distance, and over 80% of rural visitors are one-day visitors. Therefore, most of their visitation activities should be understood as rural leisure, including rural tourism. In addition, the likelihood of the rural tourist to make a return visit is influenced by their transportation means, product purchasing, staying period and travel time. The results of such rural leisure demand can provide information for regional planning strategies, such as selection of target market, type of market segments, improvement of recognition level, activity program price, facility and space planning, produce sale and connection with tour site.

• 한국정밀공학회지
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• 제19권1호
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• pp.107-118
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• 2002

This paper deals with an automated computer-aided process planning and die design system by which designer can determine operation sequences even if they have a little experience in process planning and die design of quasi-axisymmetric cold forging product by cold former working. The approach to the system is based on knowledge-based rules and a process knowledge base consisting of design rules is built. Knowledge for the system is formulated from plasticity theories, empirical results and the empirical knowledge of field experts. Programs for the system have been written in AutoLISP for the AutoCAD using a personal computer. An attempt is made to link programs incorporating a number of expert design rules with the process variables obtained by commercial FEM softwares, DEFORM and ANSYS, to form a useful package. The system is composed of three main modules and five sub-modules. The process planning and die design module considers several factors, such as the complexities of preform geometry, punch and die profiles, specifications of available cold farmer, and the availability of standard parts. As the system using 2D geometry recognition is integrated with the technology of process planning, die design, and CAE analysis, the standardization of die parts for wheel bolt requiring cold forging process is possible. The developed system makes it possible to design and manufacture quasi-axisymmetric cold forging product more efficiently.

• 한국정밀공학회지
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• 제20권4호
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• pp.29-38
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• 2003

This paper deals with an automated computer-aided process planning and die design system with which designer can determine operation sequences even after only a little experience in process planning and die design of multi former-bolt products by multi-stage former working. The approach is based on knowledge-based rules, and a process knowledge base consisting of design rules is built. Knowledge fur the system is formulated from plasticity theories, empirical results and the empirical knowledge of field experts. Programs for the system have been written in AutoLISP for AutoCAD with a personal computer. An attempt is made to link programs incorporating a number of expert design rules with the process variables obtained by commercial FEM softwares, DEFORM and ANSYS, to form a useful package. The system is composed of four main modules. The process planning and die design module considers several factors, such as the complexities of preform geometry, punch and die profiles, specifications of available multi former, and the availability of standard parts. It can provide a flexible process based on either the reduction in the number of forming sequences by combining the possible two processes in sequence, or the reduction of deviation of the distribution and the level of the required forming loads by controlling the forming ratios. The system uses 2D geometry recognition and is integrated with the technology of process planning, die design, and CAE analysis. The standardization of die parts for multi former-bolt products requiring a cold forging process is described. The system developed makes it possible to design and manufacture multi former-bolt products more efficiently.

• 복식문화연구
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• 제25권6호
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• pp.773-786
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• 2017

The current study aims to analyze the process of fabric production planning in Dongdaemun Market, which is a successful model case industrial integration in South Korea. We followed the changes in perception among fabric experts, regarding their recognition of fashion trends, and the following planning and process of fabric production. We used the purpose sampling method to select participants for interview in the Dongdaemun Market, then we carried out one-to-one interviews. Our analysis reveals 4 points of importance. First, the fabric planning stage either employed the trend book swatch, or simply reused the model fabrics already available. Even though the experts felt the need to accept the latest fashion trends, very few considered the trends as positive influences in fabric planning. Whereas trend was a key element in identifying the flow of the fashion industry, there were obstacles in carrying out the study. Second, experts frequently participated in domestic fabric seminars, but not in textile exhibitions. Third, domestic and overseas market research has been performed typically at department stores, and typically at Japan. Fourth, the influx of Chinese fabrics has both positive and negative influences, such as low price, and low reliability. In conclusion, experts were less amenable to accepting the latest fashion trends. pre-requisites in real life to meet the use of the current trend of each company. More studies on the Dongdaemun Market from perspectives of practitioners are warranted.

• 한국철도학회논문집
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• 제14권1호
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• pp.80-86
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• 2011

본 논문은 신교통 시스템인 경량전철을 도입하기 위한 기본계획 추진과정에 진행하여 온 국민참여(Public Involvement) 활동 사례를 대상으로 정보공유 이전과 이후의 신교통(LRT) 기본계획(Master Plan)에 대한 수용의식의 변화를 구조방정식모형(SEM)을 이용하여 분석하였다. 그 결과, 시민들은 설문조사, 홍보자료 제공, 오픈하우스 및 공청회(Public Hearing) 개최 등과 같은 PI 활동이 신교통(LRT)기본계획에 대한 중도적 의사표현에서 확실한 의사 표명으로 변화시키는 효과가 있었다. 이상 분석결과 철도사업의 PI는 해당 사업의 수용의식에 부정적 혹은 긍정적인 영향이 모두 존재할 수 있기 때문에 합의 형성이라는 결과물보다는 국민들에게 의사결정 할 수 있는 정보제공의 기회와 함께 철도사업의 절차적 정당성을 향상시킬 수 있도록 제도화가 필요하다.

• 한국노년학
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• 제29권1호
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• pp.215-230
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• 2009

본 연구의 목적은 은퇴자들이 은퇴 후 삶을 영위하기 위해 필요한 은퇴자금의 충분성을 분석하고 그에 영향을 주는 요인을 확인하는 것이다. 은퇴자금 충분성을 평가하기 위해 은퇴소요자금의 산정을 통한 객관적 측면과 은퇴자 스스로 인식한 주관적 인지 측면으로 구분하였다. 또한 두 가지 측면으로 분석된 은퇴자금 충분성의 결정에 영향을 미치는 요인을 각각 규명하였다. 본 연구는 한국투자자교육재단에서 50세 이상 은퇴자들을 대상으로 2007년 실시한 은퇴자조사의 자료를 토대로 분석을 실시하였다. 그 결과 우리나라의 은퇴자들은 재정적으로 충분히 준비되지 못한 상태에 있다는 점이 확인되었다. 객관적 충분성 분석 결과에 따르면, 거주주택을 제외한 모든 자산을 은퇴자산으로 사용할 경우 23.2%의 은퇴자만이 현재의 지출을 지속적으로 감당할 수 있을 것으로 나타났다. 또한 조사대상자의 25.7%가 본인의 은퇴자금이 은퇴 후 생활을 영위하는데 있어서 충분할 것이라고 인지하고 있었다. 은퇴자금의 객관적 충분성과 주관적 충분성의 일치 정도를 비교해보면 전체의 약 1/4에 해당하는 23.8%의 은퇴자가 자신의 은퇴자금 충분성 분석결과와는 다르게 인지하고 있는 것으로 나타났다. 또한 12.9%의 은퇴자들은 은퇴자금이 충분하지 않을 것으로 추정되었으나, 자신의 은퇴자금이 충분한 것으로 평가하고 있었다. 은퇴자금의 충분성에 영향을 주는 요인을 분석한 결과 가계소득이나 자가 소유 여부 등과 같은 재정 변수는 긍정적으로 유의하게 나타났으며, 은퇴 준비 여부 또한 중요한 변수임이 확인되었다. 연구 결과들을 토대로 은퇴자들과 예비 은퇴자 가계를 위한 은퇴대비 방안과 정책적 시사점을 논의하였다.

• 대한산업공학회지
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• 제31권4호
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• pp.316-333
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• 2005

Although some successful recognition algorithms have been developed, most of them did emphasize on extracting accurate interpretations without considerations of manufacturability. Evaluating the manufacturability for multiple features leads to produce the machining sequences. In this paper, the A* algorithm guarantees the optimal setup sequences with minimizing the machining cost. Also, tolerances including surface roughness are converted to STEP formats to be utilized for more reliable process plans. Finally, decision tables are used to create the detailed operational sequences based on geometric tolerances and surface roughness. Machining parameters such as feed, depth of cut, and cutting speed for each operation are added to the routing sheet. Windows are presented to show how the entire system works for a sample part.