• 설비공학논문집
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• 제20권3호
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• pp.155-166
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• 2008

The performance evaluation of a new building is becoming more important because efficient design alone is often not sufficient to deliver an efficient building. However, there is a lack of standard evaluation methods to measure the energy performance of a new construction that has Energy Conservation Design Measures(ECDMs). This study presents an enhanced method based on calibrated whole-building simulation for evaluating the energy performance of new commercial buildings and demonstrates its use using a case-study building, including: an Energy Use Index(EUI) comparison with sub-metered data and an evaluation of the performance of specific ECDMs. The use of this method has determined that the case-study building was shown to use approximately 47% less energy than the base-case building that has the same shape and function as the case-study building(i.e., calibrated as-built simulation mode]), but doesn't include the simulated ECDMs.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2008년도 추계종합학술대회 B
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• pp.507-510
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• 2008

본 논문에서는 유스케이스 모델링에 사용되는 유스케이스 명세에서 시나리오 편집을 위한 처리방법을 제안하고자 한다. 시나리오 작성에서 자동화된 번호 매기기를 위한 시나리오 단계들 간의 상호작용을 정의하고, 시나리오 저장에 필요한 시나리오 단계와 확장 요소 및 자료구조 식별하고 저장 시 시나리오 단계와 확장간의 관계를 정의한다.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2012년도 한국컴퓨터종합학술대회논문집 Vol.39 No.1(B)
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• pp.155-157
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• 2012

오늘날의 정보시스템을 개발하는데 파악해야하는 비즈니스 요구사항은 매우 복잡하고 방대하다. 기업의 비즈니스 서비스 대부분을 정보시스템이 제공하고 있기 때문에 이러한 시스템을 개발하는데 있어서 비즈니스 요구사항 분석은 매우 중요한 부분을 차지한다. 하지만 개발에 필요한 시간이 부족하여 정보시스템 개발에서 가장 중요한 비즈니스 요구사항을 충분히 분석하지 못하고 있다. 이러한 비즈니스 요구사항은 비즈니스 프로세스 모델에 잘 나타나 있으며, 이를 활용하면 효율적으로 요구사항을 분석할 수 있게 된다. 이미 비즈니스 프로세스 모델을 시스템 개발에 사용하기 위해 UML Use Case 다이어그램으로 변환하는 연구가 활발하게 진행되었지만 자동화, 관계식별 등의 해결해야 될 문제가 남아있다. 본 논문에서는 비즈니스 요구사항을 빠르고 효율적으로 분석하기 위해 비즈니스 프로세스 모델로부터 UML Use Case 다이어그램으로 추출하는 과정이 자동화가 가능한 방법을 제안한다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 추계학술발표대회
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• pp.414-416
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• 2012

최근 스마트폰 사용이 확산은 모바일 컴퓨팅의 성장을 이끌고 있다. 그러나, 배터리 구동 장치의 근복적인 특성 및 무선 네트워크의 제약으로 인하여 스마트폰을 통한 모바일 컴퓨팅을 실현하는데는 여러가지 장애물이 있다. 본 연구에서는 Use case 및 스마트 폰 구성요소 관점에서 스마트폰 전력소모를 분석한다. 일반적으로 스마트폰은 다양한 컴포넌트로 구성되는데. 우리는 이러한 구성요소에서 발생하는 전원 손실을 분석하고, 다양한 Use Case 와 배터리 수명을 분석하기 위한 큐잉 모델(Queueing Model)을 개발하고 스마트폰 전력소모를 분석한 결과를 제시한다.

• 임상간호연구
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• 제21권3호
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• pp.377-388
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• 2015

Purpose: To identify user requirements for electronic nursing record (ENR) systems so as to ensure system usability. Methods: A mixed methods approach were applied in three steps : (i) task and workflow analysis with literature review of nursing documentation, (ii) literature reviews of system usability, and (iii) Use Case idenfication and consensus-based validation. We analyzed the nursing activity logs collected from a time-motion investigation of six hospitals. The Use Cases were validated by eight clinical experts from different hospitals and two experts from academia in a sequential Delphi survey. Consensus was achieved for the significance score and agreement among the panel. Results: Eight task groups and patterns of task flow were observed, which were translated into nine Use Cases. The specification of Use Cases was derived from principles, guidelines, and recommendations on nursing documentation and electronic health record systems, which was organized into three requirements of each Use Case: functionality, information, and design characteristics. Each Use Case achieved an agreement of 50~70%, and significance scores of 4 or 5 on a 5-point Likert scale. Conclusion: The nine Use Case identified were considered to be important and adequate in terms of both clinical and informatics contexts.

• 한국대기환경학회지
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• 제24권6호
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• pp.649-661
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• 2008

The impact of the detailed surface data on regional meteorological fields in complex coastal area is studied using RAMS. Resolutions of topography and land use data are very important to numerical modeling, because high resolution data can reflect correct terrain height and detail characteristics of the surface. Especially, in complex coastal region such as Gwangyang area, southern area in Korean Peninsula, high resolution topography and land use data are indispensable for accurate modeling results. This study investigated the effect of resolutions of terrain data using SRTM with 3 second resolution topography and KLU with 1 second resolution land use data. Case HR was the experiment using high resolution data, whereas Case LR used low resolution data. In Case HR, computed surface temperature was higher than Case LR along the coastline and wind speed was $1{\sim}2m/s$ weaker than Case LR. Time series of temperature and wind speed indicated great agreement with the observation data. Moreover, Case HR indicated outstanding results on statistical analysis such as regression, root mean square error, index of agreement.

• 디지털융복합연구
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• 제10권10호
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• pp.545-550
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• 2012

세계 IT 융합산업의 시장은 규모는 더욱 성장할 것으로 예측되며 클라우드 컴퓨팅은 산업간 융합 환경을 지원하기 위한 유용한 솔루션을 제공할 것으로 기대하고 있다. 이와 같이 클라우드 컴퓨팅이 일반화되고 그 서비스가 재편됨으로써 기존의 다른 응용 기술과의 융 복합된 서비스 구조 및 형태를 예측하고 개발하는 것은 매우 중요하며 필수적인 일이다. 본 연구에서는 클라우드 서비스를 위한 기술 요소뿐만 아니라 효율적인 서비스 모델링을 위하여 지금까지 많은 시스템들이 구축에 활용되었던 유즈 케이스(Use Case)를 활용하여 다양한 융 복합 서비스 모델을 위한 요구사항 및 요소기술을 도출하고 분석하였다. 이를 통하여 실제로 융 복합 클라우드 서비스를 개발하기 위한 사례연구를 수행하였다. 궁극적으로 본 연구는 유즈 케이스 기반의 영역간의 서비스 통합을 통하여 새로운 부가 가치를 창출할 수 있는 다양한 융 복합 모델을 제시를 위한 기반자료로써 활용되길 기대한다.

• 한국도서관정보학회지
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• 제31권1호
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• pp.87-114
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• 2000

The purpose of this study is offering appropriate system and training program to helf the system designer and the trainer in addition to analyze information use behavior about the web search tools and evaluate the estimated system by user groups. The results of the study are as follows $\circledS1$ It is desirable to consider age than other demographic variables in the case of web search tool. $\circledS2$ It is desirable to design Directory Search Tool in the case of web search tool which serves the student user group. $\circledS3$ An Intelligent Search Tool is more appropriate for the students who are using keyword search tool than any other tools. $\circledS4$ A discussion about standard classification of the web information should be accomplished soon because users feel confused in using web search tools due t o absence of standard mode of classification about classified item. $\circledS5$ Librarians need the cognition about data on internet s a source of information and need positive service and user training program about these information because student users hardly get help from librarians or library orientation for learning method to use web search tool. $\circledS6$ Internet use experience and years of computer use had effect on their use ability when using web search tool, whereas computer use experience, library use experience and Online Public Access Catalogs (OPAC) use experience had no effect on it. Especially, OPAC use experience had no effect on use ability of web search tool of student user group because student user groups had no information about internet and web search tool and they did not recognized the difference about search method between web search tool and OPAC. $\circledS7$In the case of web search tool, it si important to index the increasing web resource automatically by a searching robot. But in the case of student users, web search tool is much more needed to index by index expert due to the absence of ability about selecting and combining keyword.

• Asia pacific journal of information systems
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• 제12권1호
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• pp.103-122
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• 2002

The technology acceptance model(TAM) has been widely studied in IS research and Internet has been expanded very rapidly in modern society. The purpose of this study is to provide an internet acceptance model and test it empirically. This study extends the TAM model and motivation theory by adding gender. This model posits that perceived ease of use, perceived usefulness and perceived playfulness correlate with Internet use, Test results are as follows: First, the survey suggested the three factors-perceived usefulness, perceived ease of use and perceived playfulness-affect the use of Internet. Second, Difference just appeared in case of perceived use of use between genders but not others-perceived usefulness and perceived playfulness. Third, the result represented that there was nothing that affected the use of Internet by itself among the three factors-perceived usefulness, ease of use and playfulness and perceived usefulness used gender as a moderated variable in the case of the use of Internet.

• 한국IT서비스학회지
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• 제21권2호
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• pp.61-84
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• 2022

With the recent application of deep learning to Natural Language Processing (NLP), the performance of NLP has improved significantly and NLP is emerging as a core competency of organizations. However, when encountering NLP use cases that are sporadically reported through various online and offline channels, it is often difficult to come up with a big picture of how to understand and interpret them or how to connect them to business. This study presents a framework for systematically analyzing NLP use cases, considering the characteristics of NLP techniques applicable to almost all industries and business functions, environmental changes in the era of the Fourth Industrial Revolution, and the effectiveness of adopting NLP reflecting all business functional areas. Through solving research questions based on the framework, the usefulness of it is validated. First, by accumulating NLP use cases and pivoting them around the business function dimension, we derive how NLP techniques are used in each business functional area. Next, by synthesizing related surveys and reports to the accumulated use cases, we draw implications for each business function and major NLP techniques. This work promotes the creation of innovative business scenarios and provides multilateral implications for the adoption of NLP by systematically viewing NLP techniques, industries, and business functional areas. The use case analysis framework proposed in this study presents a new perspective for research on new technology use cases. It also helps explore strategies that can dramatically improve organizational performance through a holistic approach that encompasses all business functional areas.