• 과학교육연구지
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• 제39권2호
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• pp.267-277
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• 2015

본 연구에서는 초등학교 교사들의 과학 탐구 지도에 대한 인식을 조사하였다. 먼저 교사들의 탐구 지도 경험에 대해 자유롭게 서술하도록 하여, 교사들이 인식하고 있는 탐구 지도 유형을 세 가지로 분류할 수 있었다. 관찰, 분류, 측정, 예상, 공정한 비교 등을 강조하는 '과학 과정기능 중심' 범주, 학생들이 스스로 문제를 생성하도록 하는 '과학 문제 발견' 범주, 그리고 제시된 절차에 따라 실험을 수행하며 과학적 개념이나 내용을 증명하는 '개념이나 내용 예증' 범주이다. 다음으로 18개의 활동이 각각 적힌 카드를 '탐구를 통한 과학 수업' 카드를 중심으로 한 이차원적 평면에 자유롭게 배치하도록 한 후, 중심 카드와 각 카드 사이의 상대적인 거리를 측정하였다. '학생들이 적절한 절차를 설계하고 수행'하는 것이 탐구와 가장 밀접하게 관련 있는 활동으로 인식되고 있었다. 이러한 결과는 (예비)교사의 탐구 이해도를 증진시키기 위해 적극 활용되어야 하고, 나아가 초등학교 현장에서 탐구를 통한 과학교육이 보다 활성화되어야 할 것이다.

• 디자인학연구
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• 제16권2호
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• pp.49-56
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• 2003

노인들도 사용하기 편한 제품을 디자인하기 위해서는 기존 제품에 대한 노인들을 대상으로 한 실험과정을 통하여 불편한 점을 파악하고, 그러한 불편요소가 해소될 수 있는 방향으로 해당제품이 디자인되어야 한다. 이러한 필요성에 의하여, 본 연구에서는 노인들의 일상생활에서 가장 자주 사용하고 일반적인 제품인 세탁기를 대상으로 디자인과정과 평가과정에 대한 연구를 수행하였다. 특히, 측각기와 같은 인간공학 장비를 사용하여 제품의 특정 부분에 대한 조작 편의성 평가를 수행할 수 있는 방법과 그 결과를 디자인에서 어떻게 활용할 수 있는지도 제시 하였다. 또한, 인간공학적 측면에서의 이론과 실험을 통한 디자인 방향과 컨셉의 결정, 디자인안 개발, 디자인안의 평가를 위한 실험, 실제 모델 제작, 사용편의성 측면에서 기존 모델과의 비교평가를 위한 실험 등에 대한 과정이 설명되었다. 연구의 결과는 노인을 위한 세탁기 개발에서의 중요 자료로 활용될 수 있고, 적용된 방법론은 세탁기 뿐만 아니라 다른 가전제품의 노인을 위한 디자인 개발에서도 활용될 수 있을 것이다.

• 기술혁신학회지
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• 제17권1호
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• pp.264-288
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• 2014

전 세계적으로 기술혁신을 선도할 수 있는 우수 과학기술인력 확보를 위한 경쟁이 갈수록 심화되고 있다. 인력의 국제적 이동현상을 기존에는 두뇌 유출 유입, 두뇌 순환 등으로 설명하였으나, 우수 과학기술인력의 경우 오히려 주요 국가 및 연구기관의 두뇌 유치 경쟁으로 설명하는 것이 더욱 타당하다. 본 연구는 두뇌 유치의 관점에서 미국 내 과학기술분야 우수 한인 유학생의 한국으로 귀국 여부 의사결정에 영향을 미치는 주요 요인을 도출한다. 이를 위해 1단계로 인터뷰를 통해 잠재 요인 및 가설을 도출하고, 2단계로 설문조사 및 가설 검증을 통해 주요 요인을 확정한다. 또한 로지스틱 회귀분석을 통해 귀국 여부 의사결정 모형을 만들고, 도출된 각 요인들의 기여도를 비교한다. 끝으로 해외 우수 과학기술인력 유치 활성화를 위한 정책적 시사점과 본 연구의 한계점을 논의한다.

• 한국IT서비스학회지
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• 제15권2호
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• pp.185-201
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• 2016

Recently, due to the rapid development of IT (information technologies), a variety of attempts have been made to incorporate IT into other fields such as finance and manufacturing. Among them, a novel concept in the spotlight is FinTech, which is a combined word of finance and technology. FinTech is a line of business demonstrating an innovation development through IT in the financial service industry. One of the most popular types of FinTech is a third-party mobile payment service (MPS), the examples of which can be easily found in South Korea while the actual use of the service is relatively inactive. Therefore, the main purpose of this paper is to empirically investigate influencing factors of intention to use the third-party MPS. Based on individual characteristics and the task-technology fit model, the research model of the study is developed, with switching cost included as a moderating variable. The results of structural equation model testing with 316 potential users of Kakao Pay, one of the most popular business models of the third-party MPS, show that innate innovativeness, task characteristics, and technology characteristics are positively influencing task-technology fit, which in turn significantly affects intention to use the third-party MPS. The negative moderating role of switching cost is also found. These results could help managers develop better strategies to motivate potential users to participate in their services.

• 복식문화연구
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• 제23권5호
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• pp.822-834
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• 2015

Contemporary fashion companies have been planning marketing strategies that can promote brands and products more effectively for satisfying consumers' increasingly diversified needs. For this reason, retail spaces have continued to evolve and the modern concept of pop-up stores appeared through this process. Therefore, the object of this study was to research domestic pop-up fashion store cases by collecting article data. These data are from Internet fashion-specialty sites and analyze the types and characteristics of pop-up fashion stores by providing basic information that will be useful in the pop-up fashion stores of companies when they establish their marketing strategies. This study utilized the content analysis method and derived the results by using SPSS Statistics. As a result of this study, the type of "pop-up fashion stores opening in distribution enterprises" comprised the highest percentage of the whole store types and the pop-up fashion stores' management purposes were focused on product introduction, promotion, and market testing. As time passed, not only did pop-up fashion stores' growth rate increased, but also the types of pop-up fashion stores have become more diverse. In other words, contemporary fashion companies are utilizing more pop-up fashion stores as a marketing strategy than before. However, due to the short history of domestic pop-up fashion stores, the variety of research is still insufficient, so more extensive research on pop-up fashion stores is required.

• 한국실천공학교육학회논문지
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• 제2권1호
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• pp.115-119
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• 2010

지역혁신센터는 90년대 중반부터 시행된 지식경제부의 대표적인 지역산업진흥사업으로서 전국 대학에 약 120여 개가 설치되어 운영되고 있으며, 주로 지역의 중요 산업분야의 기업들이 필요로 하는 고가장비의 구축 및 운영을 통하여 장비활용, 기술개발지원, 인력양성과 같은 사업활동을 통하여 산업전반의 경쟁력 향상을 목표로 하고 있다. 국가차원의 공학분야 인력양성에 있어 가장 큰 화두가 되고 있는 현장적응력이 우수한 인재양성을 위해서는 이와 같이 이미 국가적으로 각 분야에서 선별적으로 투자된 고가장비의 활용을 통한 인재양성 프로그램이 절실히 필요한 시점이라고 판단되며, 이에 지역혁신센터의 인프라를 토대로 한 인력양성 프로그램을 공주대학교 자동차 의장 및 편의부품 지역혁신센터 사업모델을 토대로 제안하고자 한다.

• International Journal of Concrete Structures and Materials
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• 제9권4호
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• pp.475-486
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• 2015

Mode II fracture toughness ($K_{IIc}$) of fiber reinforced concrete (FRC) has been widely investigated under various patterns of test specimen geometries. Most of these studies were focused on single type fiber reinforced concrete. There is a lack in such studies for hybrid fiber reinforced concrete. In the current study, an experimental investigation of evaluating mode II fracture toughness ($K_{IIc}$) of hybrid fiber embedded in high strength concrete matrix has been reported. Three different types of fibers; namely steel (S), glass (G), and polypropylene (PP) fibers were mixed together in four hybridization patterns (S/G), (S/PP), (G/PP), (S/G/PP) with constant cumulative volume fraction ($V_f$) of 1.5 %. The concrete matrix properties were kept the same for all hybrid FRC patterns. In an attempt to estimate a fairly accepted value of fracture toughness $K_{IIc}$, four testing geometries and loading types are employed in this investigation. Three different ratios of notch depth to specimen width (a/w) 0.3, 0.4, and 0.5 were implemented in this study. Mode II fracture toughness of concrete $K_{IIc}$ was found to decrease with the increment of a/w ratio for all concretes and test geometries. Mode II fracture toughness $K_{IIc}$ was sensitive to the hybridization patterns of fiber. The (S/PP) hybridization pattern showed higher values than all other patterns, while the (S/G/PP) showed insignificant enhancement on mode II fracture toughness ($K_{IIc}$). The four point shear test set up reflected the lowest values of mode II fracture toughness $K_{IIc}$ of concrete. The non damage defect concept proved that, double edge notch prism test setup is the most reliable test to measure pure mode II of concrete.

• 제어로봇시스템학회논문지
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• 제18권6호
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• pp.584-593
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• 2012

This paper introduces an AVP (Automated Valet Parking) system which applies an autonomous driving concept into the current PAS (Parking Assistant System). The present commercial PAS technology is limited into vehicle. It means vehicle only senses and controls by and for itself to assist the parking. Therefore, the present PAS is restricted to simple parking events. But AVP includes wider parking events and planning because it uses infra-sensor network as well as vehicle sensor. For the realization of AVP, the commercial steering system of a compact vehicle was modified into steer-by-wire structure and various sensors like LRF (Long Range Finder) and camera were installed in a parking area. And local & global server decides where and when the vehicle can go and park in the testing area after recognized the status of environment and vehicle from those sensors. GPS solution was used to validate the AVP performance. More various parking situations, vehicles and obstacles will be considered in the next research stages based on these results. And we expect this AVP solution with more intelligent vehicles can be applied in a big parking lot like a market, an amusement park, etc.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1992년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 19-21 Oct. 1992
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• pp.74-78
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• 1992

This paper describes an intelligent system to automatic evaluation of eddy current(EC) signal for Inspection of steam generator(SG) tubes in nuclear power plant. Some features of the intelligent system design in the proposed system are : (1) separation of representation scheme ,or event capturing knowledge in EC signal and for structural inspection knowledge in SG tubes inspection; (2) each representation scheme is implemented in different methods, one is syntactic pattern grammar and the other is rule based production. This intelligent system also includes an data base system and an user interface system to support integration of the hybrid knowledge processing methods. The intelligent system based on the proposed concept is useful in simplifying the knowledge elicitation process of the rule based production system, and in increasing the performance in real time signal inspection application.

• Animal cells and systems
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• 제6권1호
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• pp.13-18
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• 2002

Phylogenetic relationships of Korean Acidiella species were tested using mitochondrial 16S ribosomal RNA gene sequences. We used 16 published sequences as outgroup, and 10 new sequences for nine Korean Acidiella species as ingroup. The number of aligned sites was 1,281 bp, but 1,135 bp were used for the analysis after excluding sites with missing data or gaps. Among these 1,135 sites, 464 sites were variable and 340 were informative for parsimony analysis. Phylogenetic information was extracted from this data set using neighbor-joining, maximum likelihood and maximum parsimony methods and compared to a morphology-based phylogenetic hypothesis. Our molecular data suggest that: (1) the tribe Trypetini appears to be monophyletic even when the nine additional Acidiella species are added to our previous phylogenetic analysis; (2) all the Korean Acidiella species belong to the Trypeta group, but the genus Acidiella is not supported as monophyletic; (3) the close relationship of A. circumvaga, A. issikii, and A. sapporensis is supported; (4) the close relationship of A. pachypogon and two additional new Acidiella species is strongly supported; and (5) the possible presence of two or more cryptic species among the specimens previously identified as A. obscuripennis is suggested. Sequence data from the mitochondrial 16S rDNA allowed us to better understand the systematic status of Korean Acidiella species. They indicated that the current concept about the genus Acidiella is insufficient and needs to be refined further. This study also showed a few interesting relationships, that had not been recognized by morphological study alone. Based on this study, we were able to plan further experiments to analyze relationships within the Trypeta Group.