• 대한건축학회논문집:계획계
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• 제35권1호
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• pp.37-46
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• 2019

The energy of the building is influenced by the user 's activity due to the population, society, and economic characteristics of the building user. In order to obtain accurate energy information, the difference in the amount of energy consumption by the activities and characteristics of building users should be identified. The purpose of the study is to identify the difference in the amount of energy consumption by the user's activities in the same building, and to analyse the relationship between user's activities and demographic, social and economic characteristics. For research, energy simulation is performed based on actual user activity schedule. The results of the simulation were clustered by using K-Means clustering, a machine learning technique. As a result, four types of users were derived based on the amount of energy consumption. The more energy used in a cluster, the lower the user's income level and older. The longer a user's indoor activity times, the higher the energy use, and these activities relate to the user's characteristics. There is more than twice the difference between the group that uses the least energy consumption and the group that uses the most energy consumption.

• 한국멀티미디어학회논문지
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• 제17권4호
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• pp.506-513
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• 2014

In recent years, research on user's activity recognition using a smart phone has attracted a lot of attentions. A smart phone has various sensors, such as camera, GPS, accelerometer, audio, etc. In addition, smart phones are carried by many people throughout the day. Therefore, we can collect log data from smart phone sensors. The log data can be used to analyze user activities. This paper proposes an approach to inferring a user's physical activities based on the tri-axis accelerometer of smart phone. We propose recognition method for four activity which is physical activity; sitting, standing, walking, running. We have to convert accelerometer raw data so that we can extract features to categorize activities. This paper introduces a recognition method that is able to high detection accuracy for physical activity modes. Using the method, we developed an application system to recognize the user's physical activity mode in real-time. As a result, we obtained accuracy of over 80%.

• 한국조경학회지
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• 제29권3호
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• pp.19-28
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• 2001

The purpose of this paper is to examine factors affecting user´s satisfaction in development of natural recreation forest(NRF) in order to answer the research question: What is the magnitude of factors affecting user´s satisfaction in development of NRF. After reviewing the literature, mechanism of outdoor recreation, and development factors in NRF, we constructed the conceptual framework and have formulated the hypothesis of this research. we have obtained data through a questionnaire, which surveyed 625 visitors at 10 of the 72 natural recreation forests in Korea in 1999, We have analyzed the data using the mean difference test, Pearson´s correlation analysis, and multiple linear regression method. We found that 1) all the development factors except recreational resources affecting user´s satisfaction have turned out to be statistically significant at one percent level. The direction of relationship between independent variable and dependent variable is the same as that of dependent variable. 2) in bivariate analysis, the relationships between user´s satisfaction and all the development factors are fairly high and statistically significant. The higher the value of development factors, the higher the degree of user´s satisfaction. 3 in multivariate analysis, such variables as the suitability of activities level of services, atmosphere, and facility have been statistically significant at one percent level, and 4) Their relative contribution of the suitability of various recreational activities, level of atmosphere, and service on dependent variable have been turned out to have 8.167, 4.889, 3.333, and 1.611 times more importance than that of the suitabity of recreational resources, respectively. The research results suggest that a guideline for the creation of marketable NFR and development of use-programs and recreational atmosphere be recommended in the planning and development process of NRF, and excessive investment on facilities is not desirable. The approach and analysis method adopted by this research is highly useful for an evaluation criterion of NRF and development of devices for increasing user´s satisfaction in NRF. It is recommended that more empirical study on individual factors affecting user´s satisfaction be performed in the future.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2005년도 춘계학술발표대회 논문집
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• pp.64-68
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• 2005

The aim of this study is to reconstruct neighborhood public space appropriating for the contemporary society. The rapid development of technology has brought a number of changes to society. People's way of thinking has changed and the requirements about space has become more complex. At the urban neighborhood park, although multiple groups of citizens showed various activities, the program and structure of urban park are too fixed to support their activities. Therefore, strategy and flexible devices are needed to activate and stimulate the multi-user's complex activities. Through the case of Hong-Ik children's park, I will analyze the result of investigation about the pattern of space-user and suggest neighborhood public facilities proper to contemporary situation.

• 정보처리학회논문지C
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• 제10C권7호
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• pp.857-866
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• 2003

사용자 비정상 행위를 탐지하기 위해서 기존의 연구들은 주로 통계적 기법을 이용해 왔다. 그러나 이들 연구들은 주로 사용자의 평균적인 행위를 분석하기 때문에 사용자의 비정상행위가 정확하게 탐지될 수 없다. 본 논문에서는 사용자의 정상행위를 모델링하는 새로운 클러스터링 방법을 제안한다. 클러스터링은 분석 환경에서 임의 개수의 빈발 영역을 식별할 수 있기 때문에 통계적 기법에서의 부정확한 모델링 방법을 개선할 수 있다. 빈발 공통 지식은 트랜잭션 단위로 발생되는 유사 데이터 객체들의 빈도수와 각 트랜잭션에 포함된 유사 데이터 객체들의 반복 비율로 나타낼 수 있다. 이와 더불어, 제안된 방법은 공통 지식을 축약된 프로파일로 유지하는 방법을 설명한다. 따라서 생성된 프로파일을 이용하여 온라인 트랜잭션에서의 비정상 행위를 쉽게 탐지할 수 있다.

• 인간식물환경학회지
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• 제22권5호
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• pp.525-539
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• 2019

Much research has been conducted on user behavior by taking surveys and interviews to plan the green space effectively. However, there is a limitation in understanding detailed user characteristics such as personalities and values. This study applied the Persona-based Scenario Method (PSM) to Hongneung Experimental Forest to understand the detailed needs and behaviors of the users in the forest recreation area. The PSM is a user experience modeling technique, which tries to understand the users by describing the type of users as real people. This study 1) extracts the factors of visitor recreation activities in Hongneung Experimental Forest based on the results of the survey, 2) develops user personas based on the results of survey and comes up with activity factors, and 3) designs user scenarios. As a result of applying the PSM, 64 factors of visitor activities were derived from the observation survey in 14 sites of Hongneung Experimental Forest and 25 key factors of visitor activities were chosen through observer's brainstorming. Second, three types of personas were developed considering the key factors and the results of user characteristics with quantitative and qualitative analysis. Lastly, context scenarios were designed by applying the key factors of visitor recreation activities to the persona model. We identified the design problems of the space and design requirements through the scenarios. This study has significance in that it takes an approach from the user perspective and was applied to the forest recreation area, which was mainly used in product design. The developed personas could be used for deriving design elements and setting the direction for planning considering detailed needs, behaviors and characteristics of users.

• 한국IT서비스학회:학술대회논문집
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• 한국IT서비스학회 2003년도 추계학술대회
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• pp.233-240
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• 2003

To develop high-quality software systems satisfying the customer's needs, user-centered design (UCD) process has been emphasized in the area of human-computer interaction. And component-based development (CBD) has been extensively studied to realize a systematic software reuse, thereby reducing the time-to-market and the development cost. Balanced integration of user-centered design process and CBD process will be a promising way for successful software construction, which effectively achieves three goals: the quality of software, the cost of software development, and the time-to-market. However, traditional CBD methodology seems to lack the concept of user-centered design process and the relevant methods. This paper proposes a way of incorporating user-centered design process into a CBD methodology. Firstly, this paper gives the brief introduction of UCD. Secondly, we explain typical UCD activities and methods along the phase of systems development lifecycle and propose the use of usability maturity model (UMM) for integrating UCD activities and methods with those of CBD methodology. Finally, as a case study, we describe the results of comparing the UCD activities to the activities of MaRMI-III, which has been developed as a CBD methodology at ETRI.

• 한국언론정보학보
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• 제70권
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• pp.165-188
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• 2015

오늘날 변화된 미디어 지형에서 미디어를 이용하는 활동이 자본의 가치증식 과정에서 어떤 역할을 하는지에 대한 논의는 미디어 정치경제학과 비판언론학에 새로운 연구 영역과 노동가치론의 시각을 제시해줄 수 있다. 이 논문에서는 미디어 이용 활동을 포스트 포드주의 축적 체제의 새로운 노동 범주로 파악하거나 자본이 스스로 생산하지 못하는 지대라는 관점을 넘어설 새로운 매개 개념을 제안했다. 이를 위해 수용자상품론을 또 다른 상품의 생산을 위한 자본재로 파악하는 입장을 토대로 미디어 이용 활동을 이 자본재를 생산하기 위한 노동의 대상임을 주장했다. 또한 이러한 자본재 생산의 노동이 이루어지는 시공간으로 미디어 플랫폼이 그 중심에 있음을 논했다. 이러한 재개념화를 통해 미디어 정치경제학의 연구 영역은 플랫폼을 통한 가치의 창출이라는 범위로 확장될 수 있을 것이다.

• 한국콘텐츠학회논문지
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• 제13권4호
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• pp.469-480
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• 2013

본 연구의 목적은 일반 동극활동, 증강현실기술과 로봇을 적용한 동극활동, 증강현실기술과 로봇을 적용한 창의적 동극활동을 실시하고 유아의 사용자 경험 반응을 살펴보고자 하였다. 이를 위해 만 5세 유아 20명을 대상으로 6주 동안 3편의 동화를 감상한 후, 각각 동화에 대한 세 가지 동극활동을 차례대로 진행하였다. 이후 모든 동극활동 프로그램에 참여한 유아들을 대상으로 인터뷰를 실시하였다. 연구 결과는 첫째, 유아가 가장 흥미로워했던 동극활동은 증강현실기술과 로봇을 적용한 창의적 동극활동인 반면, 가장 흥미 없었던 동극활동은 일반 동극활동이었다. 둘째, 유아가 가장 쉽다고 답한 동극활동은 증강현실기술과 로봇을 적용한 동극활동인 반면, 가장 어렵게 인식했던 동극활동은 증강현실기술과 로봇을 적용한 창의적 동극활동이라고 하였다. 셋째, 증강현실기술과 로봇을 적용한 동극활동에 대해 모든 유아가 기술은 어렵지 않다고 답변하였고, 증강현실기술의 효과, 로봇의 역할 모두 정확하게 인식하여 답변하였다. 본 연구의 결과는 유아를 위한 디지털 리터러시 교육의 성격과 방향에 대한 적극적이고 체계적인 연구의 필요성을 시사한다.

• Journal of Information Science Theory and Practice
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• 제2권3호
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• pp.6-17
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• 2014

The purpose of this study is to examine to what extent the context in which people interact with online information affects people's credibility perceptions. In this study, credibility assessment is defined as perceptions of credibility relying on individuals' expertise and knowledge. Context has been characterized with respect to three aspects: Context as user goals and intentions, context as topicality of information, and context as information activities. The data were collected from two empirical studies. Study 1 was a diary study in which 333 residents in Michigan, U.S.A. submitted 2,471 diary entries to report their trust perceptions associated with ten different user goals and nine different intentions. Study 2 was a lab-based study in which 64 subjects participated in performing four search tasks in two different information activity conditions - information search or content creation. There are three major findings of this study: (1) Score-based trust perceptions provided limited views of people's credibility perceptions because respondents tended to score trust ratings consistently high across various user goals and intentions; (2) The topicality of information mattered more when study subjects assessed the credibility of user generated content (UGC) than with traditional media content (TMC); (3) Subjects of this study exerted more effort into making credibility judgments when they engaged in searching activities than in content creation. These findings indicate that credibility assessment can or should be seen as a process-oriented notion incorporating various information use contexts beyond simple rating-based evaluation. The theoretical contributions for information scientists and practical implications for web designers are also discussed.