• Journal of the Computational Structural Engineering Institute of Korea
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• v.26 no.1
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• pp.59-67
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• 2013

Complex-shaped tall building causes many structural challenges due to its structural characteristics regarding inclined members and complexed shape. This paper is aimed at development of design process using computational-platform which is effective design tool for responding frequent design changes, particularly as to overseas projects. StrAuto, a parametric structural modeling and optimizing system, provides the optimized alternatives according to design intent and realize a swift process converting a series of structural information necessary to nonlinear analytical models. The application of the process was to a 45-story hotel building in Ulanbator, Mongolia adopting shear wall and special moment frame with outrigger systems. To investigate the safety of lateral force resisting system against maximum considered earthquake(MCE), nonlinear response history analysis was conducted using StrAuto.

• Journal of Information Technology Applications and Management
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• v.23 no.1
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• pp.1-23
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• 2016

Social commerce (s-commerce) is a subset of e-commerce and uses social media for social interactions. Although s-commerce has been rapidly growing, disputes between some s-commerce firms and their consumers often occur over issues such as poor customer services, incorrect product information, and late refunds. In order for s-commerce to continuously grow, s-commerce firms need to build consumer-trust in their transaction process to minimize their consumers' uncertainty. The purpose of this study is to examine the relationships between the multidimensional trust (ability, integrity, benevolence) and the intention of continuous use of s-commerce. Moreover, this study presents antecedent factors needed for trust-building by applying the characteristics of s-commerce, and verifies the relations between the variables. We test and validate the research model and related hypotheses using structural equation modeling based on a survey done on 428 people who have previous experience with s-commerce. The result shows that trust has positive effect on the intention of continuous use, and verifies the necessity of the antecedent factors (social presence, assurance, informativeness, economic feasibility, and seller reputation) for trust-building. This study provides strategy for the continuous growth of s-commerce, and suggests theoretical implication that explains the relationship between the characteristics of s-commerce and consumers.

• Journal of KIBIM
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• v.8 no.2
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• pp.41-50
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• 2018

The current study focused on the utilization of building information modeling (BIM) data in steel-frame structures, which help to reduce project durations because they employ prefabricated structural members that are assembled on-site. In addition, a business process model was proposed using BIM data collected during the preconstruction, structural steel fabrication, and on-site construction phases of an actual steel-frame project. The ultimate expectation is that BIM data support at each phase, as well as the increased understanding among project participants, will result in an increase in project management productivity. The results from the current study are summarized as follows: To implement a BIM capable of application to steel-frame projects and data utilization, existing theories were studied to develop the construction project steps, both generally into the preconstruction (A1), steel fabrication (A2), and on-site construction phases, (A3) and specifically into 19 BIM-applicable phases. Based on the derived BIM-applicable phases, the model elements of the BIM object were identified, and the shortcomings of existing steel-frame projects were ameliorated, resulting in an improved data flow model. Moreover, for the proposed BIM data flow to progress efficiently, the BIM specialist needs to be well-acquainted with the phase-specific three-dimensional (3D) model output, and the infrastructure to construct an error-free 3D model must be provided. Based on the actual construction example, the BIM data utilized steel-frame projects - via production reports, clash checks, two-dimensional (2D) drawings, four-dimensional (4D) simulations, and 3D scanning - to make cooperation and communication among participants easier.

• Journal of the Korean Society for Library and Information Science
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• v.47 no.4
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• pp.275-294
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• 2013

This study utilizes structural equation modeling process to identify contributing factors that have been extracted through the first study of exploring library service and image building related factors. This study, specifically, tests the relationships between endogenous and exogenous variables that are assumed to have inherent relationships when building public library service image. As denoted from the first study, this one uses three dimensions and nine conceptual level constructs and 20 different measurement items for further test. The results of this study is that particular items to measure the image for the users would not have been fitted to the other set of samples. Also, there are differences between the two employee groups in the recognitions of images.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.24 no.4
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• pp.463-469
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• 2011

BIM(Building Information Modeling) technologies should be applied for the construction life cycle to maximize its efficiency, but the utilization for the construction phase has been significantly lower than that for the planning and design phase. Recently, some of BIM techniques such as 3D design review, 4D schedule management and so on are being introduced for efficient managing to the big national construction projects. In this study, the utilization plans of BIM are presented for the construction phase of civil engineering facilities. The methods of utilization of BIM are discussed for each type of construction, and the techniques applied to the Seoul Subway Lot No. 919 are analyzed for checking the applicability and usability. In particular, a web construction management system based on BIM can help field engineers, headquarters and contractors to use BIM more effectively, and it can be extended to maintenance phase for more efficiencies.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.26 no.6
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• pp.431-438
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• 2013

The systemization of construction information is required over whole life cycle of facilities to improve productivity of construction industry. BIM(Building Information Modeling) is a technology to manage information based on 3D information model. It has been actively suggested as one of the alternatives. However, it may be currently concentrated on the large project while the small and medium project based on BIM are slightly treated in indifference. In the case of small and medium project, the loss of information has been occurred more seriously than large project. However, it is hard to introduce BIM to the small and medium companies due to the lack of investment resources. This study has been performed to set up information management system based on BIM considering characteristics of small and medium project without excessive investment. In this study, pseudo BIM is defined as BIM for small and medium project. The concept of pseudo BIM has been suggested. The PLIB of ISO and construction information classification system of MOLIT in Korea are used to construct data dictionary for pseudo BIM. A pilot test is performed to verify the effectiveness of pseudo BIM.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.27 no.4
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• pp.321-328
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• 2014

Clear understanding and related information management of geography and city facilities are the fundamental approach to prevent city disaster. In order to accomplish the service to prevent city disaster effectively, there needs to be a consistent framework for data collection, to build models, and to manage information. In this study, the authors proposed standardized city information modeling process and application concept to use information model for service of preventing city disaster in information management standpoint. The study was conducted on the process of classification and necessary attributes to manage city facilities effectively considering disaster related information. Additionally, the study suggested the methods for building an open city information model based on an integrated data schema, CityGML. Finally, through the implementation of sample model, the study confirmed city information modeling methodology and applicability for service of disaster prevention.

• Korean Institute of Interior Design Journal
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• v.24 no.1
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• pp.207-215
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• 2015

It seems obvious that the spatial information of existing architectural heritage will be re-structured utilizing BIM technology. In the future to be able to implement such task, a new system of classification of spatial information, which fit to the structural nature of architectural heritage is necessary. This paper intend to suggest the conceptual model that can be the base of establishing new classification system for architectural heritage. For this study we reviewed researches related to classification system of architectural heritage (CS-AH) and BIM based architectural heritage (BIM-AH), first. As a result, we found that CS-AH is focused on building elevation and type, and BIM-AH is biased on the Library and Parametric Modeling. Second, we figured out a relationship between the CS-AH and BIM-AH. From this analysis, we found that BIM-AH is biased on Library and Parametric since the building elevation and type was focused on CS-AH. This review suggests a potential of the 3D CS-AH to expand the range of research for BIM-AH. At last, we suggest the three concept of classification are: 1)horizontality-accumulation relationship, 2)structure-infill relationship, 3)segment-member relationship. These three concept, together as one system of classification, could provide useful framework of new classification system of spatial information for architectural heritage.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2008.04a
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• pp.476-481
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• 2008

The objective of this paper is to propose a conceptual framework of a BIM based collaboration supporting System, called Construction Project Life Cycle Management (CPLM). The framework of CPLM is proposed by reflecting the characteristics of the AEC industry such as deliverly methods, process, fragmentation, etc.. And it is a system intended to help project participants make better decisions and to facilitate coordination between various stakeholders in a project by providing virtual collaboration environment.

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2009.04a
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• pp.567-572
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• 2009

본 연구에서는 국외 설계사무실과 국내 설계사무실의 수행 프로젝트(표1)를 디지털 디자인 프로세스에서의 디지털 도구 활용 사례조사 결과를 일련의 설계 프로세스(기획(Pre-Design), 계획 설계(Schematic Design) 중간설계(Detail Design), 실시설계(Construction Design))를 11개의 설계 단위작업((1)자료수집, (2)도서화작업, (3)의사소통/프레젠테이션, (4)협력업체와의 협업, (5)디자인 실험, (6)디자인분석/유효성 검토, (7)빌딩시스템과 자재선정, (8)자재비교/견적, (9)디자인 발전, (10)RP를 이용한 모델 제작, (11)시공/제작)으로 분류하여(설계프로세스별로 디지털 디자인 툴의 활용 빈도를 조사 분석하는 것은 프로세스별로 중복된 설계 단위작업이 진행됨으로 연구결과의 의미가 잘못 해석될 수 있다.) 그 활용에 대한 유형을 분석하고 이를 바탕으로 설계과정에서의 디지털 디자인 툴의 활용특성을 도출하여 실무설계의 기초자료를 제공하는데 그 목적을 둔다.