• Journal of the Korea Institute of Building Construction
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• v.19 no.5
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• pp.467-475
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• 2019

Delay is one of the most critical issues for construction projects and leads to huge losses in both developing and industrialized countries. The construction sector in Rwanda, a rapidly-developing nation, is no exception. Delays can be mitigated only once we have identify their primary causes, and these may not be the same in each region. This study aims to ascertain the main critical factors responsible for delays in building construction in Rwanda through an intensive literature review and questionnaire survey. A total of 40 delay causative factors were obtained from a literature review and were further classified into nine major categories. The questionnaire survey was distributed to about 80 respondents from clients, contractors, and consultants. From the list of 40 different factors, the top twelve most critical causes were identified as stoppage of work due to cash flow constraints, delay in approving design documents, confidentiality of physical plan, price fluctuations and delay in approving significant change, change orders, delay in performing inspections, Ineffective project planning, inadequate drawing details, unqualified labor, lack of materials on the market and dishonesty.

• International conference on construction engineering and project management
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• 2007.03a
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• pp.259-268
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• 2007

In a very competitive construction business environment there is a need to measure and manage business performance across a wider spectrum of business success criteria. The Balanced Scorecard (BSC) and Triple Bottom Line (TBL) reporting concepts are emerging as champions in the race for sustainable business success. The construction business organisations are often judged based on their financial performance as well as wider performance. This paper aims at developing a universally accepted tool for assessing contractors' wider business performance in the construction industry. A prototype of web-based business performance measurement system has been developed to help contractors assess their own performance aimed at uplifting their performance. The consultants/clients can also use the tool to measure contractors' performance in a value-based contractor selection. The system was developed based on the research conducted among 63 senior construction professionals and therefore further research with the participation of a large number of managers across different countries and also an upgrade of the system will be required.

• International conference on construction engineering and project management
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• 2022.06a
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• pp.847-854
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• 2022

The aim of this study is to develop a Named Entity Recognition (NER) model to automatically identify construction-related organizations from news articles. This study collected news articles using web crawling technique and construction-related organizations were labeled within a total of 1,000 news articles. The Bidirectional Encoder Representations from Transformers (BERT) model was used to recognize clients, constructors, consultants, engineers, and others. As a pilot experiment of this study, the best average F1 score of NER was 0.692. The result of this study is expected to contribute to the establishment of international business strategies by collecting timely information and analyzing it automatically.

• Journal of the Korea Institute of Building Construction
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• v.8 no.4
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• pp.53-59
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• 2008

Cost estimates are very important to their decision-making in the early stages of a construction project. So Clients have wanted not only to know the results of conceptual cost estimates but also to assess their quality Conceptual cost estimates process is very complex process, so the results of cost estimates are influenced by various factors. So the purpose of this study is to reveal the key factors which influence the reliability of conceptual cost estimates in building construction projects. The analytic hierarchy process is used to determine the relative important weights of elements influencing the conceptual cost estimates. And factor analysis is used to reveal the key factors from the elements that influence the conceptual cost estimates. The results showed that the key factors is an experience level, available data level, level of will for winning the bid, difficulty level of conceptual cost estimate, uncertainty level.

• Journal of the Korea Society for Simulation
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• v.9 no.2
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• pp.1-14
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• 2000

Recently, as construction of information infra including high-speed communication networks remarkably expands, more various information services have been provided. Thus the number of internet users rapidly increases, and it results in heavy load on Web server and higher traffics on networks. The phenomena cause longer response time that means worse quality of service. To solve such problems, much effort has been attempted to loosen bottleneck on Web server, reduce traffic on networks and shorten response times by caching informations being accessed more frequently at the proxy server that is located near to clients. And it is also possible to improve internet performance further by allowing clients to share informations stored in proxy caches. In this paper, we perform simulations of hierarchical proxy caches with the 3-level 4-ary tree structure by using real web traces, and analyze cache hit ratio for various cache replacement policies and cache sizes when the delayed-store scheme is applied. According to simulation results, the delayed-store scheme increases the remote cache hit ratio, that improves quality of service by shortening the service response time.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2008.05a
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• pp.179-183
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• 2008

A variety of design processes from 2D graphic to 3D models are meeting improved consumers' confidence of modern clients. However, the current design methods are limited to meet consumers' needs and express a design concept what a designer wants to show. Therefore the study here tries a test of hybrid space simulation combined with previous models and digital media technology, which can be used for multiple contents. The study can contribute to suggesting virtual space simulation that can help clients' spatial understanding in this media era and deliver emotional language of designers as well by utilizing the strong point of multi-sensible media.

• Journal of Korean Public Health Nursing
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• v.19 no.2
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• pp.177-187
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• 2005

The purpose of this study was to 1) identify the current management status of the Visiting Health Care Services (VHCS) and 2) to analyze the workload of the staff in the VHCS located in the Public Health Centers (PHCs) in the urban and rural areas. Method: A descriptive research design and a prospective, time and motion research design were used. A total of 18 PHCs in Gangwon Province participated in this study. A questionnaire and semi-structured observational sheet were utilized. A total of 650 self report records of the work load from the VHCS personnel were collected for a 10 day period at each of the 18 PHCs. A descriptive analysis was then done. Results: The major results were as follows. 1) The VHCS staff (nurses and nurse aids) was being assigned additional work such as maternal health care, chronic disease care, mental health care and health promotion on top of their VHCS duties. 2) The average number of home visits per client during the past year was 5.8. More specifically, the clients in the severe dependent group received an average of 27.1 visits, those clients in the moderate dependent group received 14.0 visits those clients in the slightly dependent group received 5.0 visits and those clients in the self-care group received 1.6 visits. 3) The time required for the work duties of the VHCS staff totaled 488 minutes per day. The percentage of time for home visits was only 17.4%, and this didn't include travel time. Conclusion: The main problems of VHCS were identified as a lack of personnel and a lack of time for the home visits. Strategies that are directed at the construction of a better infrastructure for VHCS are needed.

• Journal of the Korean Society of Safety
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• v.37 no.6
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• pp.50-59
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• 2022

In the Construction Technology Promotion Act (CTPA) of the Republic of Korea, safety management cost is enforced as a statutory cost that must be included in the budget of construction projects. However, the construction of underground electric power transmission facilities (UEPTFs) is not included in the category of construction works defined in the CTPA. Consequently, the statutory safety management cost does not apply to the construction of UEPTFs. To overcome this limitation, the clients of UEPTF construction projects generally provide internal guidelines enabling the addition of the safety management cost in the project budget. Nevertheless, even after the execution of the internal guidelines, some important cost items are omitted from the budget owing to the incompleteness of the guidelines. In this context, this paper proposes a complete set of accounting items and their calculation methods for appropriate budgeting of the safety management cost of UEPTF construction projects. To this end, the current budgeting method of the safety management cost of UEPTF construction projects is analyzed, and a questionnaire study is performed to confirm the necessary cost items and their appropriate calculation methods. Based on the results of the questionnaire study, a set of accounting items and their calculation criteria for the budgeting of the safety management cost of UEPTF construction projects are proposed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.120-125
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• 2003

The estimated construction costs derived at the Planning stage of a project are utilized as important data determining the feasibility of overall project. Therefore the clients usually expect to have estimations of the construction cost as precise as possible and there has been extensive studies carried out by the cost specialists worldwide to satisfy this client's specific need whereas the local estimators still heavily rely on producing quantities and detail quotations only. This paper is to introduce a case study where elemental/functional area cost analysis is incorporated into a database system for the improved accuracy in cost estimations.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2018.05a
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• pp.43-44
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• 2018

In the past, safety management has been carried out mainly by constructors, but now, participants of all construction projects such as clients, designers, constructors, and construction managers are being changed to perform safety management together. Among them, the design safety review, which examines whether the client has secured the design safety at the design stage, has been implemented since May 19, 2016, but it has not been properly implemented. Therefore, this study analyzed perception level and problems of D.F.S in architecture design firms and suggested the solutions.