• Management & Information Systems Review
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• v.33 no.4
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• pp.49-62
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• 2014

The current study extends previous research by investigating the role of shopping experience and product type within the direction of online reviews and information reliability and product attitude. To test the hypotheses, this study conducted experimental designs. Direction of online reviews and product type were manipulated as between-subject factors. Then participants were classified into high or low group based on their shopping frequency. Dependent variable was information reliability and product attitude. The results indicate that direction of online reviews have a significant effect on both information reliability and product attitude. In addition, consumers' shopping experience also shows a moderating effect between the direction of online reviews and the dependent variables. Furthermore, product type also shows a moderating effect on the information reliability, yet not on the product attitude. The results of this study contribute to the literature as a new attempt to examine the direction of online reviews in the online shopping area. We also indicated the limitations of this study, and suggested the future research directions.

• KIPS Transactions on Software and Data Engineering
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• v.3 no.2
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• pp.65-72
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• 2014

Change coupling is a measure to show how strongly change-related two entities are. When two source files have been frequently changed together, they are regarded as change-coupled files and they will probably be changed together in the near future. In the previous studies, the change coupling between two files is defined with the number of common changed time, that is, common commit time of the files. However, the frequency-based technique has limitations because of 'tangled changes', which frequently happens in the development environments with version control systems. The tangled change means that several code hunks have been changed at the same time, though they have no relation with each other. In this paper, the change types of the code hunks are also used to define change coupling, in addition to the common commit time of target files. First, the frequency vector based on change types are defined with the extracted change types, and then, the similarity of change patterns are calculated using the cosine similarity measure. We conducted experiments on open source project Eclipse JDT and CDT for case studies. The result shows that the applicability of the proposed method, compared to the previous studies.

• Journal of the HCI Society of Korea
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• v.14 no.2
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• pp.61-69
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• 2019

Recently, as a new ICT trend, emerging chatbots are actively introduced in the field of finance. Chatbot conducts services through the interaction of communication with users. The purpose of this study is to investigate the effect of interaction dialogue type on the efficiency, usability, sensibility and perceived security of financial service chatbot. Based on theoretical considerations, I have divided into closed conversation, open conversation, and mixed conversation type based on the conversation style based on the implementation method of chatbot. Three types of Financial Chatbot prototypes were made and the experiments were conducted after account inquiry, account transfer, Q & A financial task execution. As a result of experimental research analysis, chatbot's interaction dialogue type was found to affect efficiency and usability. Users have shown that the interaction of closed conversations and mixed conversations is an intuitive interface that allows financial services to be easily manipulated without error. This study will be used as a resource to improve the user experience that requires deep understanding of financial chatbot users who should consider both the emotional element of artificial intelligence that provides services through natural conversation and the functional elements that perform financial business can be.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.43 no.1
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• pp.91-98
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• 2023

Since risks occurring in construction projects can have a significant impact on schedules and costs, there have been many studies on this topic. However, risk analysis is often limited to only certain construction situations,and experience-dependent decision-making is therefore mainly performed. Data-based analyses have only been partially applied to safety and contract documents. Therefore, in this study, cluster analysis and a Word2Vec algorithm were applied to formal documents that contain important elements for contractors or clients. An initial classification of document content into six types was performed through cluster analysis, and 157 occurrence types were subdivided through application of the Word2Vec algorithm. The derived terms were re-classified into five categories and reviewed as to whether the terms could develop into potential construction risk factors. Identifying potential construction risk factors will be helpful as basic data for process management in the construction industry.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.12
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• pp.4787-4794
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• 2010

This study examined the effects of perceived service quality of dispatch companies on satisfaction and performance of user companies. The empirical investigation was conducted in human service sector. Service quality was classified into five dimensions: tangibles, reliability, responsiveness, assurance, and empathy. Data were collected from 80 employees of user companies. Results indicated that responsiveness and assurance were positively related to satisfaction of user companies. Results also indicated that tangibles, reliability, responsiveness, and empathy were positively related to performance of user companies. This study had differential value that it applied the concept of SERVPERF into the labor market, and analyzed its effects on customers' satisfaction and performance. The results also have consequences for managers responsible of outsourced workers.

• Journal of the Korean Institute of Landscape Architecture
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• v.33 no.3 s.110
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• pp.1-17
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• 2005

오늘날 지속가능한 발전의 주요 목적으로서 환경의 효과적 보호와 신중한 자연자원의 이용이 강조된다. 이와 같은 목적들을 성취하기 위해서 종합적인 경관 정보가 필수적이다. 한국의 경우, 도시화는 전통적인 농촌 경관 변화, 산림 손실과 단편화 등 많은 환경 문제를 야기했다. 특히 산림이 높은 생물 다양성 가치를 갖고 있는 한국으로서는 산림 손실과 단편화는 생태관점에서 보면 아주 치명적이다. 현재 개인 또는 공공 부분 개발 프로젝트를 위한 환경 영향 평가의 일부분으로 시각 경관 영향 평가가 요구된다. 그러나 이런 시각 경관 영향 평가는 단지 전체 경관의 일부분의 경관 정보만을 제공하고, 특히 현재 경관 평가에서는 경관의 생물 다양성 가치를 평가하지 않는다. 본 연구는 이와 같은 문제점들을 극복하고 한국 상황에 맞는 지속가능한 경관 계획을 위한 필수적인 종합 경관 정보를 제공하기 위해서, 경관 특성과 생물 다양성 가치 평가를 위한 생태 이질성 지수를 결합한 진보된 경관 특성 평가 방법론을 제시하는데 그 목적이 있다. 이 방법론을 통해 경관 특성 평가에서 12가지 경관 특성 유형(type)을 분류하였고 그것의 분포, 경관 특성적 형태, 경관 특성에 부정적인 영향을 줄 수 있는 개발 압력 등을 분석하고 서술하였다. 분석 결과, 주택과 산업 단지 개발, 농지 형질 패턴 변경, 수변 공간 개발 등이 주요 개발 압력으로 나타났다. 경관 생태 이질성 평가 결과에서는 도시근교 지역과 농촌 경관 특성 유형 지역에서 잠재적 생물 다양성 가치가 높았다. 산림 지역 경관 특성 유형에서는 잠재적 생물 다양성 가치가 중간 수치로 나온 반면 도시 경관 특성 유형에서의 잠재적 생물 다양성 가치는 아주 낮았다. 비록 제한된 데이터와 경관 생태 이질성 지수 사용으로 인한 문제점들(스케일 종속적, 변화 패턴이 예측하기 힘든 지수, 자의적인 분류시 다른 결과 발생, 더 종합적인 생물 다양성 잠재력을 평가하기 위해서는 더 많은 다른 경관 생태 지수 필요 등)이 제기되었지만, 이 연구에서 제시된 진보된 경관 특성 평가 방법론을 통해 얻은 종합적인 경관 정보가 지속가능한 경관계획을 할 때 어떻게 잘 활용되어질 수 있는지 예로써 증명하였다. 그 결과 진보된 경관 특성 평가 방법론이 지속가능한 경관 계획을 위한 수단으로 사용될 수 있을 것으로 사료된다.

• Journal of Korea Society of Industrial Information Systems
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• v.13 no.2
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• pp.35-46
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• 2008

This research developed a strategy for mobile banking services based on the important factors deduced from quality assessment of mobile banking service that is experiencing rapid growth of user. SERVQUAL model and importance-performance tool were used. First, SERVQUAL model uses the important factors of mobile banking service selected from literature reviews. As a result, four dimensions that affect user satisfaction are found; assurance, customer orientation, tangibility, and reliability. Second, importance-performance analysis is to develop the strategy using the four factors. The final results revealed that assurance dimension had the strongest influence on user satisfaction. Assurance dimension of high expectation and yet low real performance needs immediate improvement. Customer orientation dimension of low expectation and performance should be reconsidered definition of satisfaction. On the other hand, tangibility dimension of higher performance than expectation is simply to maintain current level. Reliability dimension of high expectation and performance is recommended consistent management.

• The Journal of the Korea Contents Association
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• v.19 no.11
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• pp.92-101
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• 2019

This study used the Q-method to derive the structure of subjective opinions and perceptions of university students about the behavior of food delivery agency service provided by staff not directly employed in restaurants. For this purpose, the Q factor analysis was performed using the PC QUANL program for the Q-sort, which consists of a statement card, a P-sample, and a classification process. The results were classified into three types. The factor names were set as the first type (N = 7): efficiency seeking type, the second type (N = 19): benefit seeking type, and the third type [(N = 6): cost-effectiveness seeking type. The characteristics of each type are Type 1:Types that recognize aspects that are efficient for both consumers and restaurants, Type 2: Types of recognizing aspects of being benefited from speed, convenience and benefit, Type 3: Although it contributes to labor cost savings, it appears to recognize price and quality aspects in the initial market, which is burdened by consumers. The purpose of this study is to derive the problems of food delivery agency service business according to the three types and to provide strategic implications for the development direction and improvement plan.

• The Journal of the Korea Contents Association
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• v.18 no.5
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• pp.635-646
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• 2018

This study applied Q methodology to graduate students of food service management department in Seoul to grasp subjective perception of customers using Michelin guide restaurant. Six types of analysis result were obtained. Specifically, the first type (N = 3): Restaurant hygiene-seeking type, the second type (N = 6): Restaurant taste-seeking type, the third type N = 5): Select Restaurant Compare Prices type, 4th type (N = 3): Pursuing taste for restaurant price type, 5th type (N = 2) Restaurant full service select type, and 6th type (N = 3): Restaurant menu configuration Select. In the future, the research on the Michelin guide restaurant will be revised and supplemented with more detailed Q methodological questions and analytical techniques based on many documents and empirical studies, to analyze the various opinions of respondents more concrete and objectively.

• 한국벤처창업학회:학술대회논문집
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• 2006.11a
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• pp.415-443
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• 2006

This empirical study focused on examining the relationship between transactional transformational leadership style and power of construction project manager and the organizational effectiveness, respectively, and the moderating role of power between leadership and the organizational effectiveness. A 790 numbers useful questionnaires were obtained from the stuffs working at the construction sites excluding project managers. Internal consistency test using Cronbach's ${\alpha}$ and confirmatory factor analysis were conducted for the reliability and validity of the scales respectively. And cluster analysis and multivariate analysis of variance (MANOVA) were conducted to test the hypotheses. The results and implications are as follows. First, the leadership styles of project managers influence positively the subordinates' job satisfaction but not organizational commitment in construction project. Second, the power styles of project managers influence positively the subordinates' job satisfaction and organizational commitment. Third, the leadership styles of the project managers influence positively the subordinates' job satisfaction and organizational commitment by the power moderating role. The implication of this result is important because of the fact that the transformational leadership can be useful even in the construction projects. And the moderating role of the project manage's power suggests.