Korean Journal of Construction Engineering and Management最新文献_第3页

A Study of the Establishment of Small and Medium Sized Architectural Design Firm BIM Environment based on Virtual Desktop Infrastructure 基于虚拟桌面基础架构的中小型建筑设计公司BIM环境构建研究

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.078

Kyuhyup Lee, Joonghwan Shin, S. Kwon, Jae-Woo Park

{"title":"A Study of the Establishment of Small and Medium Sized Architectural Design Firm BIM Environment based on Virtual Desktop Infrastructure","authors":"Kyuhyup Lee, Joonghwan Shin, S. Kwon, Jae-Woo Park","doi":"10.6106/KJCEM.2016.17.5.078","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.078","url":null,"abstract":": Recently BIM technology has been expanded for using in construction project. However its spread has been delayed than the initial expectations, due to the high-cost of BIM infrastructure development, the lack of regulations, the lack of process and so forth. In design phase, especially, collaboration based on BIM system has being a key factor for successful next generation building project. Through the analysis of current research trend about IT technologies, virtualization and BIM service, data exchange such as drawing, 3D model, object data, properties using cloud computing and virtual server system is defined as a most successful solution. In various industrial fields, cloud computing technology is utilized as a promising solution which can reduce time and cost of hardware infrastructure. Among the cloud computing technology, VDI is receiving a great deal of attention from it market as an essential part cloud computing. VDI enables to host multiple individual virtual machines by using hypervisor. It has an advantage to easy main device management. Therefore, this study implements a step-by-step user’s DaaS by analyzing the desktop resource data of the workers from Pre-design phase to Schematic design, Design develop and Construction design phase. It also develops BIM environment based on test of BIM modeler and designers in architectural design firm. The goal of the study is to enable the cloud computing BIM server. It provides cost saving, high-performance quality of working environment and cooperation’s convenience and high security when doing BIM work in small and medium sized architectural design firm.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120896324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Primary Management Factors for Collaboration among Participants in Technical Proposal Tendering 技术方案投标参与者合作的主要管理因素

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.003

Seon-Woong Koo, Su-Sang Lim, Yousang Yoon, Sangwon Han, Chang-taek Hyun

{"title":"Primary Management Factors for Collaboration among Participants in Technical Proposal Tendering","authors":"Seon-Woong Koo, Su-Sang Lim, Yousang Yoon, Sangwon Han, Chang-taek Hyun","doi":"10.6106/KJCEM.2016.17.5.003","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.003","url":null,"abstract":"Recently government is set to expand its policy to promote technical proposal tendering in a dimension of technical competitiveness reinforcement. Because a variety of complicated techniques are applied in technical proposal tendering and variables could be occurred in terms of cost, schedule, constructability and others when techniques are reflected on design document collaboration management among participants is considered insignificantly. So the research would determine primary management factors and presents management direction for collaboration among participants. First action for this is categorization of hindrance factors to collaboration into five factors as ‘Poor work processing’, ‘Communication cap among participants’, ‘Lack of understanding about technical proposal tendering’, ‘Difficulty of decision making’ and ‘Insufficiency in managing the work data’. Second correlation analysis is conducted between the categorized factors and participants according to tasks in technical proposal tendering to figure out the correlation degree of variables. If there is a strong correlation between variables, hindrance factor in that case regarded primary management factor to collaboration and finally management direction is presented at each task.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"89 10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131230732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative Study of General Public`s and Construction Engineers` Perception on Images of Construction Engineers 公众与建筑工程师对建筑工程师形象认知的比较研究

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.062

Dong Bin Kim, Han-soo Kim

{"title":"Comparative Study of General Public`s and Construction Engineers` Perception on Images of Construction Engineers","authors":"Dong Bin Kim, Han-soo Kim","doi":"10.6106/KJCEM.2016.17.5.062","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.062","url":null,"abstract":": Construction engineers are the core resource for the sustainable development of construction industry and positive images toward construction engineers give much impacts on recruit and retainment of the young and talented. Although previous studies reported on negative aspects of the image of construction industry, the image of construction engineers has not been properly investigated to date. The objective of the study is to compare images of construction engineers as perceived by general public and construction engineers themselves in order to identify key characteristics and implications. The result shows that construction engineers themselves, compared with general public, have more negative tendencies on images of construction engineers. The study suggests that it is critical to enhance the understanding of roles of construction engineers and their morality in order to improve general public's perception on construction engineers images. On the other hand, fundamental measures to be taken to restore the environments of construction industry for construction engineers to improve their self-perception on images of construction engineers.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121180278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting Default of Construction Companies Using Bayesian Probabilistic Approach 基于贝叶斯概率方法的建筑企业违约预测

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.013

Sung-Moon Hong, Jaeyeon Hwang, Tae-Whan Kwon, Ju-Hyung Kim, Jae-Jun Kim

{"title":"Predicting Default of Construction Companies Using Bayesian Probabilistic Approach","authors":"Sung-Moon Hong, Jaeyeon Hwang, Tae-Whan Kwon, Ju-Hyung Kim, Jae-Jun Kim","doi":"10.6106/KJCEM.2016.17.5.013","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.013","url":null,"abstract":"Insolvency of construction companies that play the role of main contractors can lead to clients’ losses due to non-fulfillment of construction contracts, and it can have negative effects on the financial soundness of construction companies and suppliers. The construction industry has the cash flow financial characteristic of receiving a project and getting payment based on the progress of the construction. As such, insolvency during project progress can lead to financial losses, which is why the prediction of construction companies is so important. The prediction of insolvency of Korean construction companies are often made through the KMV model from the KMV (Kealhofer McQuown and Vasicek) Company developed in the U.S. during the early 90s, but this model is insufficient in predicting construction companies because it was developed based on credit risk assessment of general companies and banks. In addition, the predictive performance of KMV value’s insolvency probability is continuously being questioned due to lack of number of analyzed companies and data. Therefore, in order to resolve such issues, the Bayesian Probabilistic Approach is to be combined with the existing insolvency predictive probability model. This is because if the Prior Probability of Bayesian statistics can be appropriately predicted, reliable Posterior Probability can be predicted through ensured conditionality on the evidence despite the lack of data. Thus, this study is to measure the Expected Default Frequency (EDF) by utilizing the Bayesian Probabilistic Approach with the existing insolvency predictive probability model and predict the accuracy by comparing the result with the EDF of the existing model.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123054087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Study on the Estimation Measure of Delay Cost on Work Zone Using the Traffic Flow Model 基于交通流模型的工作区域延误成本估算方法研究

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.120

Yun-Sik Kim, Min-jae Lee

{"title":"A Study on the Estimation Measure of Delay Cost on Work Zone Using the Traffic Flow Model","authors":"Yun-Sik Kim, Min-jae Lee","doi":"10.6106/KJCEM.2016.17.5.120","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.120","url":null,"abstract":": The user cost is an important analysis item which should be considered together with life-cycle of facility, administrator cost and discount rate in LCCA for efficient asset management of SOC facilities. Especially, a significant delay cost occurs often for users in the road field due to a work zone for cleaning and maintenance, and in such case, the administrator should consider the administrator cost as well as the user cost for more rational decision making. However, the user cost has not been considered in most decision making steps until recently and relevant studies also have not been carried out actively. In this study, the methodology to estimate the user cost and delay cost required in the decision making step using the traffic flow model and the direct benefit estimation model in the traffic facility investment evaluation guideline is suggested. And, the traffic flow model was estimated on 4 national highway sections where maintenance was actually carried out in 2014 using VISSIM and, the user cost and the delay cost were estimated based on the suggested methodology. The analysis result showed that the average user cost of 17,569,000 KRW/km ×day occurred on Section A with approximately 30,000 AADT before a work zone occurred, and in case the first lane was blocked for maintenance, the delay cost of 10,193,000 KRW/km×day (158%) on average occurred additionally. The delay cost of 1,507,000 KRW/km×day (115%) and 1,985,000 KRW/km×day (119%) occurred on Sections B and D with approximately 20,000 AADT respectively and the delay cost of 262,000 KRW/km×day (105%) occurred on Section C with approximately 10,000 AADT. This result of this study was estimated based on the simulation of traffic flow model so that there is a limitation in its actual application. A study to develop a highly appropriate model using actual observation data and improve the possibility to apply it through the verification using the simulation will be necessary in future.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127017066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Construction Bid Data Analysis for Overseas Projects Based on Text Mining - Focusing on Overseas Construction Project's Bidder Inquiry 基于文本挖掘的海外工程建设投标数据分析——以海外工程建设投标人查询为例

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.089

J. Lee, J. Yi, JeongWook Son

引用次数: 1

A Decision Support Model for Optimal Delivery of Public Construction Projects 公共建设项目最优交付决策支持模型

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.022

Hee-Teak Park, Chansik Park

{"title":"A Decision Support Model for Optimal Delivery of Public Construction Projects","authors":"Hee-Teak Park, Chansik Park","doi":"10.6106/KJCEM.2016.17.5.022","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.022","url":null,"abstract":": The Project Delivery System (PDS) is used in mixed way without clear classification from tendering system and the standard itself that can be selected is set with project budget or estimated cost only. Essentially, the PDS should consider and reflect project characteristics and types, internal and external factors for the purpose of improving the lives of citizens and their welfare. However, the current status is not operated flexibly due to the given budget, period and uniform laws and regulations. In order to solve this problem, this study suggests a Decision Support Model to select the optimal PDS for public construction projects. The current problem of the PDS for public construction projects were identified and the application of a decision support model was proposed. Subsequently a decision-making model was suggested for each PDS using the identified factors and linear discriminant function of discriminant analysis. An additional questionnaire survey and actual practical case analysis were carried out to verify the effectiveness and applicability of the model to actual work. It can be used by adjusting the decision support model and detailed factors according to the specific characteristics of public organization, ability of person in charge and project type.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131055445","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Numerical Maps to Select Solar Panel Installation Sites no Expressway Slopes 利用数字地图选择无高速公路斜坡的太阳能电池板安装地点

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.071

Jaehoon Jung, Byungil Kim

{"title":"Using Numerical Maps to Select Solar Panel Installation Sites no Expressway Slopes","authors":"Jaehoon Jung, Byungil Kim","doi":"10.6106/KJCEM.2016.17.5.071","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.071","url":null,"abstract":": Solar energy is a viable source to replace fossil fuels. However, challenges associated with site selection for solar panel installation inhibit the uptake of solar energy systems. Expressway slopes offer a potentially attractive alternative for solar panel installation for the following reasons: expressway slopes are vacant public sites, they are abundant (about 4,193km in South Korea), and they are linear in nature. Traditionally when selecting sites for solar systems conventional surveying methods are employed. Unfortunately, these methods can be dangerous, time consuming, and labor intensive. To overcome these limitations of conventional site selection methodologies, we propose an automated approach using numerical maps. First, contour and expressway polylines are extracted separately from numeric maps. The extracted contour lines are then converted into a digital terrain model; this is used to calculate aspect and slope information. Next, the extracted expressway lines are projected onto a binary image and refined to recover the disconnections, and then applied to create a buffer zone to narrow the search space. Finally, all data sets are overlaid to identify candidate sites for solar panel systems and are visually verified through comparisons with aerial photos.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126765410","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Forecasting the Effects of the Claims in the Korean Construction Industry 预测韩国建设行业的索赔影响

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.035

Jihye Kim, Haekyung Im, Jaehyun Choi

{"title":"Forecasting the Effects of the Claims in the Korean Construction Industry","authors":"Jihye Kim, Haekyung Im, Jaehyun Choi","doi":"10.6106/KJCEM.2016.17.5.035","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.035","url":null,"abstract":": Various risk factors are known to be the nature of construction project execution process. These factors lead to potential claims, dispute mediation, arbitration, and litigation which can result in huge loss of money and time. Therefore, it is necessary for construction companies in Korea to improve overall project management capability through the evaluation before entering into the overseas construction market. Also, after examination of the claim and dispute caused by construction project risks, a substantial degree of influence and active preparation for the claim and dispute management should be confirmed via the effect analysis of the each factors. Main claim causes were derived through claim and dispute cases involved with domestic construction projects. As a prediction result of the main claim, 16.1% of the construction change claim, 5.7% of the bad faith claim and 2.7% for the construction delay claim were found to be the portion of the total construction cost. As a result of this analysis, risk management methodology was suggested to improve a project management capability for domestic construction companies through analysis result of the main factors of construction claims.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124575872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

CM Prospects and Strategies Based on Contract Statistics : 1997 through 2014 基于合同统计的CM前景和策略:1997 - 2014

Korean Journal of Construction Engineering and Management Pub Date : 2016-09-30 DOI: 10.6106/KJCEM.2016.17.5.097

Jiwon Ha, Youngsoo Jung

{"title":"CM Prospects and Strategies Based on Contract Statistics : 1997 through 2014","authors":"Jiwon Ha, Youngsoo Jung","doi":"10.6106/KJCEM.2016.17.5.097","DOIUrl":"https://doi.org/10.6106/KJCEM.2016.17.5.097","url":null,"abstract":": CM services have been focused on the advancement of the CM industry and expansion to overseas market based on CM capabilities. However, there has been lack of quantitative and comprehensive research to investigate current CM trends and prospects for improving competitiveness. In this sense, the purpose of this study is to statistically analyze total of 3,453 CM service contracts over the past 18 years (between 1997 and 2014) in term of market type, contract size, owner’s type, commodity type. Finding of this research reveal that 1) compared to 2005, CM market size in 2015 increased as much as 2.5 times, and that 2) domestic CM projects count for 87.5%, architectural project 88.4%, less than 1 billion won small contracts 75%, respectively. Also, recently as CM company are developing capability and competitiveness, 1) overseas CM market share has grown up to 20% among total CM contract amount, and 2) CM contracts by private owners has increased 3 times demanding the total management services based on high technical capability. Additionally, the result of this paper supports the growth path model proposed by Jung et al. (2014), where a path from Domestic Public (DP3) and Domestic Private (DC2) CM projects towards the expansion to International Private (IC5) contracts was quantitatively analyzed. Implications for other practical issues are also briefly discussed.","PeriodicalId":220018,"journal":{"name":"Korean Journal of Construction Engineering and Management","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132771679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0