안드로이스 애플리케이션의 효율적인 리소스 사용 점검을 위한 테스팅 방법 및 사례

송경욱,안효석,이상학,Song, Gyeong-Uk,An, Hyo-Seok,Lee, Sang-Hak 한국정보과학회 2016 정보과학회지 Vol.34 No.5

한국과 중국의 BIM 수용영향요인 비교분석

송경욱,이슬기,유정호,Song, Jingxu,Lee, Seulki,Yu, Joungho 한국건설관리학회 2021 한국건설관리학회 논문집 Vol.22 No.6

중국건설업에서는 BIM (Building Information Modeling)의 활용을 통해 건설업의 비효율적인 상호운용성의 문제를 해결하여 건설업의 총생산액 증가시키고자 한다. 하지만 중국 주건부에서 2011년부터 건설업의 BIM활용을 촉진하였음에도 불구하고 중국에서는 BIM 활용률은 45% 미만인 것으로 나타났다. 한편 한국 건설업은 중국보다 먼저 BIM 도입을 하여 활용하고 있는 만큼, BIM 활용수준과 BIM 수용의지가 중국보다 높을 것으로 예상된다. 따라서 본 연구에서는 한국과 중국의 BIM수용영향요인 비교분석을 통해 중국의 BIM 활용률을 향상시킬 수 있는 방안을 제안하고자 한다. 한국과 중국의 BIM수용영향요인 비교분석을 위해 기술수용이론(Technology Acceptance Model; TAM)과 BIM 수용모델 관련 선행연구고찰을 통해 BIM 수용영향요인을 분류하고, 중국의 국가적 특성과 중국건설업만이 가진 특성을 반영한 BIM 수용영향요인을 추가하여 실제 BIM 사용자인 한국과 중국 건설사업 참여주체(시공사, 설계사, CM)를 대상으로 설문조사를 실시하였으며, 통계값을 유의미한 차이를 알아보기 위해 SPSS 22.00을 활용하여 t-test 실시하였다. 마지막으로 t-test 결과를 기반으로 중국의 BIM 활용률을 향상시킬 수 있는 개선방안을 제안하였다. 본 연구의 결과를 통해 중국 건설업에 적합한 BIM 활용 활성화 방향을 제시하고, 중국 건설업의 BIM 활용 활성화 연구의 이론적 기초를 제공할 수 있을 것으로 기대한다. In the Chinese construction industry, the utilization of Building Information Modeling (BIM) aims to increase the total output of the construction industry by solving the problem of inefficient interoperability in the construction industry. In 2011, the Chinese Ministry of Housing and Urban-Rural Development despite the technical advantages of BIM and the government policy, the BIM adoption rate in China is lower than 45%. Meanwhile, as the South Korean construction industry is a step ahead of its Chinese counterpart in introducing and utilizing BIM, it is expected that BIM is more actively utilized and accepted in South Korea than in China. According to a comparative study based on the hype-cycle theory, South Korea is at a more advanced stage of introducing BIM, than in China. This study aimed to suggest how to increase BIM utilization rates in China. To this end, this study comparatively analyzed factors affecting BIM acceptance between China and South Korea. For the comparative analysis of the BIM acceptance factors between China and South Korea, literature reviews on the technology acceptance model (TAM) and BIM acceptance model were carried out, and based on that, the BIM acceptance factors were classified. Other BIM acceptance factors were also added and considered, as they reflected Chinese national characteristics and construction industry. As for the derived BIM acceptance factors, construction project participants, especially actual BIM users in China and South Korea, were targeted for the survey. A t-test using SPSS 22.00 was carried out to identify significant differences in data. Finally, based on the t-test results, this study suggested ways of improving the BIM utilization rate in China. Based on the findings, this study is expected to contribute to activating BIM adoption in the Chinese construction industry and also to set a theoretical foundation for future studies on BIM utilization in the industry.

중국 건설업 BIM 활용 장애요인

송경욱 ( Song Jingxu ),유정호 ( Yu Jung-ho ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.1

Since the first BIM development outline was issued in 2011, China has initially tried to adopt BIM in the construction industry. After the BIM guide was issued in 2017, China has officially entered the era of building informatization in the construction industry. Through the statistical data of BIM application reports in China's construction industry from 2014 to 2020, this paper concludes that China has made great progress in the popularization rate of BIM, but has little effect in the adoption in actual projects. Through the reading and analysis of relevant documents in China, 13 obstacle factors for BIM technology adoption in construction enterprises are preliminarily defined.

모바일 BIM기반 부적합보고서 관리시스템

송경욱(Song, Jingxu),유정호(Yu, Jungho) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.1

초등학교에서 환경체험학습이 환경 친화적 행동에 미치는 영향

김영용(Kim Young Yong),송경욱(Song Kyung Wook) 한국실과교육학회 2004 한국실과교육학회지 Vol.17 No.1

This study was carried out to examine the influence of environmental experience learning for the elementary school children on the pro-environmental behavior. The subjects of the study consisted of 250 elementary school children in 5th and 6th grades from two schools in Jeju-do which are situated in very similar natural and cultural circumstances. One of them was designated as the experimental group which took part in environmental experience learning, and the other as the comparative group which performed only classroom-oriented learning. The program for environmental experience learning was made up of the following 4 types of activities: environment exploring activities, environment observing activities, nature experiencing play activities, and making activities with waste materials. The time used for these activities were taken from that for free activities, special activities, tour activities, extra-curricular activities, etc. The results of the study were based on the statistical analysis of the 492 questionnaires obtained from the 250 children questioned twice, before and after the experiment, with 4 invalid questionnaires excluded. They are summarized as follows: Comparing the mean values of the experimental group and the comparative group, it was indicated that the pre-experiment showed slight differences, but the post-experiment showed big differences. In particular, the arrival point of environmental education showed the most significant difference in the section of environment-protective behaviors. The pre and post t-test results of both groups indicated that the experimental group showed significant differences but the comparative group did not. Particularly in the section of environment-protective behaviors, which was probably the visible effect of environmental education, the experimental group showed significant differences in all of the items, but the comparative group showed no significant differences.

IPA를 활용한 한국과 중국의 BIM 활용성과 비교분석

이슬기(Lee, Seul-Ki),송경욱(Song, Jingxu),유정호(Yu, Jung-Ho) 대한건축학회 2021 대한건축학회논문집 Vol.37 No.11

Both Korea and China have designated BIM application compulsory targets to revitalize BIM in the construction industry and established a BIM revitalization promotion plan. In order to obtain the expected effect of using BIM, it is necessary not only to purchase tools for BIM use and to prepare related systems and organizations, but also to identify and reflect user requirements through periodic performance evaluation from the users point of view. Therefore, this study examines the strategies established for BIM activation in Korea and China, evaluates each countrys BIM utilization performance, checks the investment direction for each countrys BIM activation, and derives key improvement factors and improvement plans. The importance and performance of the expected effects of BIM are measured on a 7-point scale for construction industry practitioners in Korea and China who have experience in using BIM. We verify whether there is a significant difference in the importance and performance using t-test and derive priority improvement priorities for each country using IPA. According to the results of the analysis, in Korea, the effects of high importance were also high in performance. This is judged to be the result of relatively long-term investment based on a specific implementation plan for revitalizing BIM. On the other hand, unlike Korea, China does not show a specific trend, and ‘Maintain relations with the client’ has the highest performance in both the design and construction stages. It is judged that China is greatly influenced by external factors in the use of BIM. Through this, it is meaningful not only to identify improvement plans for each country, but also to suggest the necessity of establishing a specific implementation plan while presenting the characteristics of BIM utilization by adoption time.

레이저 쇼크 패터닝을 통한 표면 텍스처링이 알루미늄과 강 접촉면의 마찰특성에 미치는 영향

이성구(Sung Goo Lee),송경욱(Kyeong Uk Song),최대철(Dae Cheol Choi),노종현(Jong Hyun Noh),김홍석(Hong Seok Kim) 한국생산제조학회 2020 한국생산제조학회지 Vol.29 No.4

In this study, a laser shock surface patterning process was applied to effectively transfer a micro-pattern array to an aluminum specimen. The effect of surface texturing on the tribological properties of aluminum and steel contact surfaces was investigated. In dry conditions, the friction coefficient of the contact surface could be significantly reduced through surface texturing. However, as the contact load increased, the amount of wear debris collected in the cavity became too large, and the influence of the micro-pattern on the frictional force decreased. In lubricated conditions, surface texturing significantly reduced the average friction coefficient and its variation. The effect of surface texturing became prominent in high contact load conditions due to the increase in hydrodynamic effects. Further studies considering the pattern geometry, loading conditions, and properties of the lubricant are needed to quantitatively model the coefficient of friction.

ASP를 이용한 광고주 주도형의 모바일 광고 시스템에 관한 연구

이재원(Lee Jae-Won),김호윤(Kim Ho-Yoon),나은구(Na Eun-Gu),송경욱(Song Kyoung-Wook) 한국전자상거래학회 2003 전자상거래학회지 Vol.4 No.2

  We interest in mobile application field and application development with wireless internet and mobile business growth, and field of them is mobile advertisement. Existent mobile advertisement server to achieve mobile advertising is not system of ASP(Application Service Provider) base or the merchandise management and customer management function is lacking real condition. This research develops the mobile advertising server development of ASP form that has advertiser leading-type advertising manufacture, customer management and merchandise management function. Using developed system, advertiser sends out mobile advertising message of text base to customer who becomes own permission without lead-time delay of advertisement creation. Developed mobile advertising server as ASP form, advertiser who wishes to send out mobile advertisement can contribute in easily available in World Wide Web and stagnated mobile ASP business activation.

초등학생의 창의성 교육을 위한 TRIZ 발명 교육 프로그램의 개발 및 적용 효과

김희필(Kim, Hee Pil),남승권(Nam, Seung Kwon),이한규(Lee, Han Kyu),계광선(Kye, Gwang Sun),이주호(Lee, Joo Ho),임병웅(Yim, Byung Yung),송경욱(Song, Kyung Wook),정수정(Jung, Soo Jung) 한국실과교육학회 2007 한국실과교육학회지 Vol.20 No.2

The purpose of this study was to develop the invention education program applied with TRIZ and to verify effects to enhance elementary school students creativity. The results of this study were as followings: First, the developed program was based on 16 TRIZ such as segmentation, local quality, symmetry change, merging, multi-functionality, nested doll, weight compensation, equipotentiality, intermediary, self service, cheap disposables, flexible shells and thin films, optical property changes, homogeneity, discarding and recovering, composite materials. Second, a teacher and students participated in the program evaluated that the contents of the program was effective in invention. Third, the program was effective in improving students creative characteristics. Forth, the program was effective in enhancing students creativity, especially fluency.

街路建築物에서의 公開空地에 관한 硏究

송경욱,이석주,유창균,조용준 朝鮮大學校 建設技術硏究所 1999 建設技術硏究 Vol.19 No.3

The city is the social space with a lot of people having the various and different background and positions. That the city is the social space of high density means it is the space for convenient and comfortable life with the sense of community in frequent activities by overcrowded people and for this, intentional human behaviors within the city. From such a viewpoint, this research is to examine and analyze the publicity of external space of buildings with open space which is the important factor in improving the quality of city and the results of the research are as follows. It is found that the installation of open space has been made at the place where urban development is actively performed from the center of city with many users, but the open space which secures the comfort of the city and then attracts the people is not secured and is in the stage of legal restriction and the conversion of building owner's consciousness is needed. It is analyzed that most of open space are located at the front, but in fact there is no device which intercepts the eyes of pedestrian and open space users and since each space is divided by merely ground border, it is difficult to find the hierarchy or territory of two spaces and more considerations should be given for users. It is shown that the obligatory installations of open space such as bench are not equipped. Since the open space in urban area should be prepared in the side of publicity for users as well as for the urban comport, it is considered that the conversion of building owner's consciousness and institutional supports like incentive system should be followed. Moreover, open space have an influence on the diversification of architectural design, architects must consider the diversification of location, form and components of open space to make it an attractive space for users.