• 산업경영시스템학회지
• /
• 제22권52호
• /
• pp.229-239
• /
• 1999

Enterprise integration, which aims to enhance an enterprise's competitive edge, requires a highly structured product information model as a common product database. Previous research works on this issue have been narrowly focused on the transformation of product information between various operation areas, leading to a situation where enterprise integration lacks a formal method of information modeling. In this paper, research works and issues surrounding product information modeling for enterprise integration are reviewed, and the requirements for a product information model are identified. A product information model called L3DPIM (Layered Three Dimentional Product Information Model) is proposed, which is based on a feature-based design process. This model is expected to serve as a modeling paradigm for enterprise integration.

• 국제학술발표논문집
• /
• The 5th International Conference on Construction Engineering and Project Management
• /
• pp.433-436
• /
• 2013

This study suggests IFC-based bridge information modeling methods and its application model in BIM environment. Data model extension for bridge structure was achieved using user-defined property sets based on IFC framework. First, identification information was added. Bridge members are identified through physical and spatial semantic information added as property sets. Instances for semantic information were assigned according to standardized rules. Second, CO2 related factors were added for application information model. It can play a role to calculate and manage the quantity of CO2 emission. Third, properties for temporary structure to estimate and manage the construction cost were added. Finally, we investigated proposed methods through implementing the application information model of bridges.

• 한국도서관정보학회지
• /
• 제49권2호
• /
• pp.221-244
• /
• 2018

이 연구의 목적은 우리 이용자의 요구와 행태에 기반 한 FRBR 기반 OPAC 프로토타입을 실험적으로 구현해 보는데 있다. 이러한 목적을 위해 이 연구에서는 시스템 개발방법 중 사용자의 요구사항이 민감하게 반영되어야 할 경우 활용할 수 있는 방법인 프로토타이핑(prototyping) 기법을 적용하여 연구를 수행하였다. 구체적으로, 이 연구에서는 (1) 국외 FRBR형 검색서비스에 대한 이용자 선호도 평가결과를 토대로 하여 프로토타입의 논리적 구조를 설계하고, (2) 설계한 논리적 구조에 따라 FRBR 기반 프로토타입을 물리적으로 개발한 다음, (3) 프로토타입에 대한 이용자 만족도 평가를 실시하였다. 이 때, 만족도 평가는 대학생 50명과 전문가 6명을 대상으로 수행하였다.

• 디지털융복합연구
• /
• 제10권9호
• /
• pp.123-136
• /
• 2012

인터넷의 발전으로 웹 어플리케이션은 널리 사용되고 있지만, 웹 기반 정보시스템 구축을 위한 별도의 감리지침은 없는 상태이다. 정보화사업은 매우 다양한 특성을 포함하고 있기 때문에 웹 기반 정보시스템에 대한 감리모델이 필요하다. 따라서, 웹 기반 정보시스템에서 감리 효과를 높이고 품질강화를 위하여 웹기반 정보시스템 감리모형을 제안하였다. 감리점검항목은 기존 정보시스템 감리점검 프레임워크의 3대축을 준용하여 감리시점으로는 분석, 설계, 구현으로 정의하고, 감리영역은 컨텐츠, 디자인, 프로세스로, 감리관점 점검기준은 절차, 산출물, 성과를 기준으로 정의하였다. 또한 정보시스템 개발 방법론의 기존모델과 웹 기반 정보시스템 차이를 제시하고 웹기반 정보시스템 감리를 위한 감리영역별로 감리점검항목을 도출하였다. 도출된 감리점검항목을 설문조사를 통해 적합성을 검증하였고 도출된 감리점검항목을 적용시킨 개선된 감리점검모형을 제안하였다.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제11권12호
• /
• pp.5905-5926
• /
• 2017

Sentiments can profoundly affect individual behavior as well as decision-making. Confronted with the ever-increasing amount of review information available online, it is desirable to provide an effective sentiment model to both detect and organize the available information to improve understanding, and to present the information in a more constructive way for consumers. This study developed a unified phrase-based topic and sentiment detection model, combined with a tracking model using incremental hierarchical dirichlet allocation (PTSM_IHDP). This model was proposed to discover the evolutionary trend of topic-based sentiments from online reviews. PTSM_IHDP model firstly assumed that each review document has been composed by a series of independent phrases, which can be represented as both topic information and sentiment information. PTSM_IHDP model secondly depended on an improved time-dependency non-parametric Bayesian model, integrating incremental hierarchical dirichlet allocation, to estimate the optimal number of topics by incrementally building an up-to-date model. To evaluate the effectiveness of our model, we tested our model on a collected dataset, and compared the result with the predictions of traditional models. The results demonstrate the effectiveness and advantages of our model compared to several state-of-the-art methods.

• 한국CDE학회논문집
• /
• 제13권4호
• /
• pp.286-295
• /
• 2008

Construction industry, which is a composite industry being performed by organic combination of various tasks, gives birth to a various of information in the stages of planning, designing, and maintenance management. In particular, the drawing information is broad in the scope of use because it contains all information about buildings as wall as bid, materials, contracts. Therefore, the management of drawing information security is one of the most important factors, which determines the success of failure of business. The major findings and result of this study are as follows to control the distributed drawing information in the collaboration environment. 1) Analysis for function and practical use of DRM in the construction industry. 2) Proposal for applications of DRM that can secure IFC model-based drawing information in the collaboration environment. 3) Extraction from additional IFC entities to apply DRM to part 21 physical files 4) Analysis for functions which are necessary in DRM application prototype system and development of the system. 5) Development IFC model-based DRM prototype system.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권12호
• /
• pp.5507-5528
• /
• 2016

In computer vision, salient object is important to extract the useful information of foreground. With active contour analysis acting as the core in this paper, we propose a bottom-up saliency detection algorithm combining with the Bayesian model and the global color distribution. Under the supports of active contour model, a more accurate foreground can be obtained as a foundation for the Bayesian model and the global color distribution. Furthermore, we establish a contour-based selection mechanism to optimize the global-color distribution, which is an effective revising approach for the Bayesian model as well. To obtain an excellent object contour, we firstly intensify the object region in the source gray-scale image by a seed-based method. The final saliency map can be detected after weighting the color distribution to the Bayesian saliency map, after both of the two components are available. The contribution of this paper is that, comparing the Harris-based convex hull algorithm, the active contour can extract a more accurate and non-convex foreground. Moreover, the global color distribution can solve the saliency-scattered drawback of Bayesian model, by the mutual complementation. According to the detected results, the final saliency maps generated with considering the global color distribution and active contour are much-improved.

• 한국IT서비스학회:학술대회논문집
• /
• 한국IT서비스학회 2006년도 추계학술대회
• /
• pp.593-599
• /
• 2006

Including technical device and general information system, the information-technical(IT) system is defined as the technical system for acquiring, processing, storing and transferring information to a person. This paper presents Knowledge-based Heuristic Evolution Model for creating the advanced information-technical system. This Evolution Model is derived from the historical review on definition of evolution, the research on the architecture of the general IT system, history of IT system, technology innovation theory and multi-case study research. The evolution model is applicable to the conceptual creation of the advanced product in R&D organization requiring development methodologies like rapid-prototyping to develop next generation product. For the detailed theoretical construction and practical application of Evolution Model, the case study research based on action research is performed. the object of the case study is mobile device, especially mobile hand-held phone. Thus, we obtain the Evolution Model for creating the advanced information-technical system.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2003년도 하계종합학술대회 논문집 Ⅲ
• /
• pp.1621-1624
• /
• 2003

As the entities participating Grid become larger, performance requirement for the LDAP-based GIS(Grid Information Service) goes beyond that provided by a stand-alone single LDAP server. This entails the exploration of distributed LDAP systems. This paper presents the performance evaluation respectively for a distribution-based and a replication-based LDAP model. The analysis is based on an analytic performance model for each distributed system which is obtained by applying the M/M/1 queuing model. The performance evaluation made to these analytic models reveals that the distribution-based and the replication-based model show a significant tradeoff in their performance with respect to the system size as well as the amount of system load.

• Journal of Information Processing Systems
• /
• 제10권2호
• /
• pp.271-282
• /
• 2014

The advancement of knowledge society has enabled the social network community (SNC) to be perceived as another space for learning where individuals produce, share, and apply content in self-directed ways. The content generated within social networks provides information of value for the participants in real time. Thus, this study proposes the social network community activity-based content model (SoACo Model), which takes SNC-based activities and embodies them within learning objects. The SoACo Model consists of content objects, aggregation levels, and information models. Content objects are composed of relationship-building elements, including real-time, changeable activities such as making friends, and participation-activity elements such as "Liking" specific content. Aggregation levels apply one of three granularity levels considering the reusability of elements: activity assets, real-time, changeable learning objects, and content. The SoACo Model is meaningful because it transforms SNC-based activities into learning objects for learning and teaching activities and applies to learning management systems since they organize activities -- such as tweets from Twitter -- depending on the teacher's intention.