탄소나노튜브 함량에 따른 열계면소재 방열성능 비교

김원준(Wonjoon Kim),이상훈(Sanghoon Lee),서대우(Daewoo Suh),슈첸첸(Chenchen Xu),김태훈(Taehun Kim),송창식(Changsik Song),유치종(Chijong Yoo),김영성(Youngsung Kim),김중년(Joongnyun Kim),백승현(Seunghyun Baik) 대한기계학회 2020 대한기계학회 춘추학술대회 Vol.2020 No.12

자동차 엔진음의 청각 감성 평가 척도 개발

김원준 ( Kim Wonjoon ) 한국품질경영학회 2020 품질경영학회지 Vol.48 No.3

Purpose: The purpose of this study is to develop a measurement scale for evaluating the auditory affect of automobile engine sounds. Methods: In order to collect affective vocabulary, literature review, user tests, and expert interviews were conducted. Affective vocabulary related to automobile engine sounds was selected through three methods. To develop the evaluation scale, open/close card-sorting and expert interview-based survey method was used. Results: The results of this study are as follows; In order to select the main affective vocabulary from the collected vocabulary, 39 vocabularies with a frequency of 5 or higher were selected as vocabulary expressing the main auditory affect of automobile engine sounds. Each affective vocabulary is divided into three dimensions, it was confirmed that the conceptual model for the auditory affect of automobile engine sounds is composed of three levels: intuitive, descriptive, and evaluative of hierarchical structure. As a result of the study, four indices of intuitive dimension, seven indices of descriptive dimension, and one index of evaluative dimension were derived from the evaluation scale of the auditory affect in an automobile engine sound. Conclusion: The auditory evaluation scale developed in this study can be used to systematically measure and evaluate the auditory affect of automobile engine sounds.

고객 감성 분석을 위한 학습 기반 토크나이저 비교 연구

김원준 ( Kim Wonjoon ) 한국품질경영학회 2020 품질경영학회지 Vol.48 No.3

Purpose: The purpose of this study is to compare and analyze the tokenizer in natural language processing for customer satisfaction in sentiment analysis. Methods: In this study, a supervised learning-based tokenizer Mecab-Ko and an unsupervised learning-based tokenizer SentencePiece were used for comparison. Three algorithms: Naïve Bayes, k-Nearest Neighbor, and Decision Tree were selected to compare the performance of each tokenizer. For performance comparison, three metrics: accuracy, precision, and recall were used in the study. Results: The results of this study are as follows; Through performance evaluation and verification, it was confirmed that SentencePiece shows better classification performance than Mecab-Ko. In order to confirm the robustness of the derived results, independent t-tests were conducted on the evaluation results for the two types of the tokenizer. As a result of the study, it was confirmed that the classification performance of the SentencePiece tokenizer was high in the k-Nearest Neighbor and Decision Tree algorithms. In addition, the Decision Tree showed slightly higher accuracy among the three classification algorithms. Conclusion: The SentencePiece tokenizer can be used to classify and interpret customer sentiment based on online reviews in Korean more accurately. In addition, it seems that it is possible to give a specific meaning to a short word or a jargon, which is often used by users when evaluating products but is not defined in advance.

The Systematic Evaluation of User Experience in the Virtual Reality by each Context

Wonjoon Kim(김원준) 대한인간공학회 2020 대한인간공학회 학술대회논문집 Vol.2020 No.10

Development of Affective Visual Quality for Vehicle Trunk using Affective Engineering

Wonjoon Kim(김원준),Taebeum Ryu(류태범),Yushin Lee(이유신),Donggun Park(박동건),Myung Hwan Yun(윤명환) 대한산업공학회 2015 대한산업공학회 춘계학술대회논문집 Vol.2015 No.4

Objective: The purpose of this study is to identify affective variables for visual quality of vehicle trunks and to explore the relationship between the affective variables and design variables of the trunks. By determining which design variables affect satisfaction of the trunk based on the relationship, design guideline can be suggested to improve the affective quality and the satisfaction of the trunks. Background: As the importance of user satisfaction has been increasing in the product-use, affective engineering has become a key method to design a product for improving the user satisfaction. Method: Ten vehicles and thirty participants were recruited for the affective evaluation. The affective visual quality for the vehicle trunks was rated by the participants using 7-Likert scales and 100 point scales. According to the results, we developed the affective model of visual quality for vehicle trunk using regression analysis based on the relationship between the affective variables and conjoint analysis based on the relationship between the design variables and satisfaction. Results: As the result of the conjoint analysis, Pad Color turned out to be the design variables that have positive impact on improving satisfaction of vehicle trunk. Different types of vehicle showed that the different design variables were used to describe the satisfaction of the trunk. Conclusion: By statistical analysis for the impact on the satisfaction of the trunk, the relationship between the affective variables and design variables is determined. An evaluation model of the satisfaction vehicle trunk is suggested based on the relationship. Also, the combinations of design variables are expected to be applied on forecasting the affective visual quality of the vehicle trunk developed later. Application: On the basis of this study, the evaluation model of satisfaction can be further applied to other moving parts of vehicle such as hood and sunroof.

Development of Affective Visual Quality for Vehicle Trunk using Affective Engineering

Wonjoon Kim(김원준),Taebeum Ryu(류태범),Yushin Lee(이유신),Donggun Park(박동건),Myung Hwan Yun(윤명환) 한국경영과학회 2015 한국경영과학회 학술대회논문집 Vol.2015 No.4

Objective: The purpose of this study is to identify affective variables for visual quality of vehicle trunks and to explore the relationship between the affective variables and design variables of the trunks. By determining which design variables affect satisfaction of the trunk based on the relationship, design guideline can be suggested to improve the affective quality and the satisfaction of the trunks. Background: As the importance of user satisfaction has been increasing in the product-use, affective engineering has become a key method to design a product for improving the user satisfaction. Method: Ten vehicles and thirty participants were recruited for the affective evaluation. The affective visual quality for the vehicle trunks was rated by the participants using 7-Likert scales and 100 point scales. According to the results, we developed the affective model of visual quality for vehicle trunk using regression analysis based on the relationship between the affective variables and conjoint analysis based on the relationship between the design variables and satisfaction. Results: As the result of the conjoint analysis, Pad Color turned out to be the design variables that have positive impact on improving satisfaction of vehicle trunk. Different types of vehicle showed that the different design variables were used to describe the satisfaction of the trunk. Conclusion: By statistical analysis for the impact on the satisfaction of the trunk, the relationship between the affective variables and design variables is determined. An evaluation model of the satisfaction vehicle trunk is suggested based on the relationship. Also, the combinations of design variables are expected to be applied on forecasting the affective visual quality of the vehicle trunk developed later. Application: On the basis of this study, the evaluation model of satisfaction can be further applied to other moving parts of vehicle such as hood and sunroof.

Research Trends of Gait Analysis in Virtual Environments

Yong Min Kim(김용민),Ilsun Rhiu(유일선),Wonjoon Kim(김원준),Gyungbhin Kim(김경빈),Myung Hwan Yun(윤명환) 대한인간공학회 2022 대한인간공학회 학술대회논문집 Vol.2022 No.4

사용자 선호기반 웨어러블 디바이스의 수용성 연구

김민석(Minseok Kim),김원준(Wonjoon Kim),김민기(Minki Kim),강재원(Jae Won Kang) 한국콘텐츠학회 2017 한국콘텐츠학회논문지 Vol.17 No.9

다양한 기능을 제공하는 웨어러블 디바이스에 대한 대중의 인지 및 관심은 크게 증가하였으나, 정작 실제 판매 성장률은 정체되는 현상이 관찰되고 있다. 본 논문은 이러한 웨어러블 디바이스의 확산정체현상을 분석하기 위해 향후 스마트워치에 내장될 서비스 기술들에 대한 소비자의 선호를 컨조인트 분석을 통해 파악하였다. 또한, 스마트워치의 각 서비스별 소비자 지불의사금액을 도출하여, 스마트워치 제품별 간접효용과 이에 기반한 상대적 소비자 수용률을 예측하였다. 그 결과 신기술 사용으로 얻는 기대효용보다 스마트워치 착용이 야기하는 새로운 행동양식의 변화로 인한 심리적인 비용이 클 경우, 소비자들이 구매를 주저하여 혁신적인 제품의 확산이 저해되는 소위 ‘혁신의 저주’가 스마트워치 시장에서도 나타날 수 있음을 확인하였다. 이와 같은 분석결과는 웨어러블 디바이스 기술개발 계획 수립과 같은 기술전략 뿐만 아니라, 제품출시 및 판매가격 설정 등 마케팅 전략에 대한 실무적 시사점을 제공한다. Despite consumers’ increasing awareness and interests in innovative wearable devices, the sales growth has been stagnant. To analyze this phenomenon, we investigate consumer preferences for various innovative features embedded in wearable devices. Conducting conjoint analysis on smartwatches, we empirically show that the curse of innovation can occur when the consumer’s expected utility from the smartwatch falls short of his/her psychological cost associated with behavior change from smartwatch usage. Therefore, our findings provide managerial implications on the R&D strategy for new technologies and more importantly on the marketing strategy easing consumers’ resistance to highly innovative products.

소셜 네트워크 사이트의 소셜 추천 광고 효과에 대한 연구

김지영(Jeeyoung Kim),서기슬(Kiseul Suh),김원준(Wonjoon Kim),김송미(Songmi Kim) 한국콘텐츠학회 2017 한국콘텐츠학회논문지 Vol.17 No.4

본 연구에서는 소셜 추천 광고에 대해 중점적으로 살펴보고 광고 효과를 분석하였다. 구체적으로, 소셜 네트워크 사이트 상의 광고 효과에 영향을 미치는 중요한 세 가지 요인, 광고 추천인의 광고 추천 의도와 관련된 보상 유형 (금전적 보상 vs. 비금전적 보상), 광고의 제품 유형 (쾌락재 vs. 실용재 ), 광고 추천인과 소비자와의 유대 강도 (강한 유대 vs. 약한 유대)에 대해 조사하였다. 보상 유형과 광고 제품 유형 간의 상호 작용 효과를 검증하기 위해 2 × 2 요인 실험 설계를 하였으며 광고 추천인과 소비자 사이의 유대 강도는 조절변수로 설정하고 분석을 실시하였다. 연구 결과, 소셜 추천 광고를 본 참가자들이 비금전적인 보상을 제공하는 쾌락재 광고를 볼 때에 효과가 가장 높았으며, 제품 유형과 보상 유형이 각각 효과를 보인 것으로 나타났다. 광고 제품 유형 및 보상 유형의 조합에서는 약한 유대에 있는 사람이 추천하는 광고보다, 강한 유대에 있는 광고 추천인이 광고 효과에 더 큰 영향력을 미친다는 조절 효과가 확인되었다. 즉, 광고 추천인과 소비자 사이의 유대 강도의 차이에 따른 조절 효과가 발생한 것이다. 본 연구 결과를 바탕으로 소셜 네트워크 사이트 상에서의 마케팅 환경 방법에 관한 시사점을 논의하였다. This study focuses on an effectiveness of socially recommended advertising on social network sites (SNSs) and investigates the impact of three critical factors on SNS advertising effectiveness - reward type for advertising recommenders’ intention, product type on advertisements, and tie strength. A 2 × 2 factorial design was used to test the interaction effects between the two variables, reward type and product type on advertisements, moderated by tie strength. The results indicate that when participants observe socially recommended advertising, hedonic product ads with non-monetary reward shows the most effectiveness, and reward type and product type are also effective. In the combination of reward type and product type, we have confirmed the regulating factor influencing the effectiveness of social advertising according to the tie strength between the recommenders and the consumers. Strong-tie recommenders have more influence on the effectiveness of the social advertising than weak-tie recommenders. Based on these results, theoretical and practical implications were provided to refine marketing environments on SNSs.

거시환경요인과 복합제품시스템의 기술진화: 원자력 발전 플랜트의 사례를 중심으로

곽기호,김원준,김민기,조창연,Kwak, Kiho,Kim, Wonjoon,Kim, Minki,Cho, Chang Yeon 기술경영경제학회 2017 Journal of Technology Innovation Vol.25 No.2

복합제품시스템이란 고도의 엔지니어링과 설계 기술이 집약되어 있는 복잡한 시스템 형태의 제품으로 국가 경제 발전 및 에너지, 교통, 통신 등 사회 인프라 구축과 밀접하게 연계되어 있다. 이에 따라 복합제품시스템의 기술진화를 이해하기 위해서는 기술개발 주체의 기술진보 노력을 넘어서 복합제품시스템을 둘러싼 거시환경요인이 기술진화에 미친 영향을 복합적으로 고찰하는 것이 필요하다. 이에 따라 본 연구에서는 원자력 발전 플랜트 사례를 중심으로 복합제품시스템 기술진화에 대한 정책, 경제, 그리고 사회적 요인의 영향을 종단적으로 서술하였다. 인터뷰에 기반한 1차 자료와 다양한 참고 문헌에 기반한 2차 자료를 복합적으로 활용한 결과, 원전 기술의 진화는 "원자력의 평화적 활용을 위한 응용연구"(1950년대~1960년대), "원자력 발전 시장 확산 - 1차 르네상스"(1970년대), "원자력 발전 안전성 제고와 후발국의 추격"(1980년대~2000년대 후반), 그리고 "원자력 발전 시장 2차 르네상스를 위한 안전성의 최우선화와 차세대 원자로 기술 개발"(2010년대 후반~현재)의 4단계에 걸쳐 진행되는 것으로 나타났다. 또한 각 단계별 기술진화에 있어 각국의 에너지 정책과 원자력 발전 연구개발 투자와 같은 정책적 요인, 경기 사이클에 의한 전력 수요의 변화, 전력원 간 경쟁과 같은 경제적 요인, 그리고 안전성에 대한 사회적 수용과 환경오염에 대한 인식 등의 사회적 요인 등이 중요한 영향을 미쳤음을 확인하였다. 본 사례 연구는 보다 거시적인 관점에서 복합제품시스템의 기술진화를 고찰할 수 있는 이론적 접근방법을 제시하였다는 점에서 그 의의가 있다. 따라서 복합제품시스템을 육성하고자 하는 국가들은 기술개발 투자와 노력뿐 아니라 정책과 경제, 사회적 요인을 통합적으로 고려하여 이를 기술진화에 활용하기 위한 노력을 경주해야 할 것이다. Complex product systems (CoPs) is a engineering-intensive products with high-ended design technology, which are closely linked with national economic growth and development of social infrastructures. Accordingly, in order to understand the technological evolution of CoPs, it is necessary to identify the macro-environmental drivers surrounding the CoPs and their impact on the technological evolution of the CoPS. Therefore, we investigate the effect of policy, economic and social drivers on the technological evolution of CoPS by implementing the longitudinal case study on nuclear power plant during the periods between 1950 and 2010s. Based on the analysis of various sources of secondary data and primary data through interviews, we found that the technological evolution of nuclear power plant is progressed as "Phase 1: Application research for peaceful utilization of nuclear energy" between 1950s and 1960s, "Phase 2: The first renaissance of nuclear energy" during 1970s, "Phase 3: Enhancement of safety and the catch-up of latecomers in nuclear energy" between 1990s and 2000s, and "Phase 4: Top prioritization of safety and the development of next generation reactors for the second renaissance of nuclear energy" since 2010s. We also found that various kinds of policy, economic and social drivers, such as energy policy, investment in technology development, economic growth and energy demand, social acceptability and environmental concern, have affected the technology evolution of nuclear power plant at each phase. We emphasize the role of macroenvironmental drivers in the technological evolution of CoPS. We also suggest that countries that endeavor to develop CoPs need to utilize those drivers for enhancing competitiveness and sustaining leadership.