• Proceedings of the Korean Institute of Building Construction Conference
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• 2016.05a
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• pp.113-114
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• 2016

This paper proposes a technical requirements analysis of implementation of multi-trade prefabrication. Recently, there has been a rise in the use of prefabrication to minimize on-site work for time reduction to increase productivity. Prefabrication technique is evolved into multi-trade prefabrication combining other trades from single-trade prefabrication. For implementation of new technique, not only itself but complementary techniques have to be prepared. In this paper, MEP corridor rack, a major item of multi-trade prefabrication, was implemented in the test bed and its process was analyzed to find out technical requirements. As a result, comparatively high level of IT technique was required for efficient use of multi-trade prefabrication in design, lifting and construction phase. In design phase, component level of BIM library was needed for manufacturing; and in lifting phase, BIM-based site logistics process was required. Also in construction phase, laser scanning was implemented for gathering shape and geometry of the wall and slab that were attached to multi-trade prefabrication module.

• Proceedings of the KSR Conference
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• 2011.05a
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• pp.717-724
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• 2011

In order to commercialize the track systems including the turnouts developed in Korea, the guideline of technical and systematic performance evaluation considering local environment was established on Aug. 2010. It consists of a technical compatibility, laboratory test and in-service test. Technical compatibility and laboratory test of the domestically-developed swing-nose crossing turnout on slab track(F18.5) were evaluated according to the guideline. And then in-service test was performed for the turnout installed at the 2nd phase site of Kyung-Bu HSR. In-service test is comprised of monitoring, and field and on-board test during KTX operation, where monitoring is to check the maintainability, and field and on-board test is to confirm structural and running safety. This paper is intended to explain the requirements for the in-serve test and analyze the results of monitoring and the data measured at field and on-board. Based on the in-service test, it is proven that performance of the domestically-developed swing-nose crossing turnout on slab track(F18.5) well satisfies the requirements of the guideline.

• Proceedings of the KSR Conference
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• 2011.10a
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• pp.2235-2240
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• 2011

Recently, government agencies such as MKE Ministry of the small and midsize businesses and technology development requirements, technical difficulties to solve the Institute of Cast cooperation by establishing a network hub system Institute of Cast diffusion and commercialization of the R & D and are encouraged to promote. SME supporting with the experting technologies required to small and medium-sized businesses through "A comprehensive support program production site" of ISTK(Korea Research council Industrial Science & Technology) having been performed from 2010 to 2012, a pilot project in 2009. In this paper, customized technology services program in the past two years run will be discussed with the performance and improvement. Comprehensive support program that ends the production site in 2012 onwards the needs of maintenance difficulties of the railroad companies to build a support system and its ongoing research about the future plans to do.

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2003.11a
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• pp.276-282
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• 2003

The geoscientific study on geological disposal for radioactive wastes has established the stepwise site characterization program, methods and investigation technology. However the intrinsic properties of geological material such as heterogeneity and scale dependent properties make difficulty on satisfactory understanding of geological conditions. To avoid unnecessary time delay and unexpected extra-cost for site investigation, the accurate and complete site investigation program should be established in a stepwise manner and the QC programs for investigation methods and procedures. Moreover, the technical requirements and preferences for a repository should be distinguished and be assessed at the end of each investigation step.

• International Journal of High-Rise Buildings
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• v.8 no.3
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• pp.185-192
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• 2019

Citic Tower is the first over-500 m-tall super highrise building in the world, located in the high seismic intensity area with paek ground acceleration over 0.2g in 475 years. This project is unique in its complexity, large volume, and challenging site conditions (zero site for construction). The traditional techniques can hardly meet safty, quality and schedule requirements of the construction. This article introduces the key construction technologies that are innovatively developed and applied in Citic Tower project construction, including intelligent super-high-rise building integrated construction platform system, independently developed by the CCTEB; Jump-Lift Elevator, which is the first of the kind with service height over 500 meters; combined temporary-and-permanent fire protection systems. The BIM technology is also applied in this project. Through technical innovation, and utilization of technologies, construction speed and safety had been greatly improved.

• The Journal of the Convergence on Culture Technology
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• v.7 no.4
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• pp.181-187
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• 2021

This study conducted a survey of 118 men and women who obtained hair national technical certificate from June 28 to July 11, 2021, focusing on SPSS.The WIN 22.0 program was used. We would like to examine the effect of recognition of hair national technical certificates on job utilization and satisfaction with certificate acquisition, and the effect of job utilization on satisfaction with certificate acquisition at the hair salon site. First, the necessity and utility of recognition of hair national technical qualifications have been shown to affect job utilization. Second, it was found that the necessity and utility of recognition of hair national technical certificates affect the satisfaction of obtaining certificates. Third, it was found that the job utilization of the national technical certificate of hair affects the satisfaction of obtaining a certificate. As a result of the study it meets the requirements that can be put into the field, and it can be seen that usability in the hair salon site is important as an effect on the satisfaction of obtaining a certificate. Based on these conclusions, the following suggestions are made for subsequent studies, taking into account the limitations of the study. The point is that hairdressers who obtained national technical certificates participated in this study were limited to S regions. In the future, it is necessary to expand the size and region of the sample group in various ways and reflect a wide range of research overall.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2013.11a
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• pp.13-14
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• 2013

Mechanical splices has been applied in nuclear power plant according to ASME(American Society of Mechanical Engineering) and ACI(American Concrete Institute) Code requirements. In particular sleeve with ferrous filler metal splices and cold roll formed parallel threaded splices have been used in domestic nuclear power plants. The objective of this study is to find out the constructability of the mechanical splices which had been used in Korea nuclear job site and to review the technical trends in the near future.

• Journal of Korean Library and Information Science Society
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• v.33 no.3
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• pp.133-152
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• 2002

The purpose of this study is to propose the criteria for evaluating web information resources. This study also attempts to get a sense of the overall quality of web information resources and to identify the relationship among the criteria, Particularly those on the science and technology. Three evaluation categories are Proposed; information content functionality or workability, and design. Core features of information content includes authority, relevancy, currency; functionality includes navigation, user support technical requirements; layout and design includes visual appearance. Based on the proposed criteria, the 50 sample web resources selected from 5 different field were evaluated. The results showed that the web information resources on the Electrical and Electronic Engineering field was excellent. The Pearson's correlation coefficient between evaluation criteria showed that information content and functionality had a negative relationship, on the other hand functionality and design had a moderate correlation.

• Journal of the Korea Computer Industry Society
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• v.2 no.3
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• pp.275-284
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• 2001

A rapid growth in the number of Web courses has been reported in education as the Internet draws attention from the community. However, it should be noted that quality is more important than quantity in education. We need to emphasize on developing and distributing high quality Web materials to achieve high level of excellence in teaching and learning. This paper first addresses the issue of Web courseware evaluation and then analyzes techniques used in current Web courses and proposes technical requirements to improve the quality. Lastly, we show the results of visiting the Edunet, the largest educational site funded by the government, assessing the Web materials designed for elementary students, and propose what needs to be done to improve the quality.

• Educational Technology International
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• v.6 no.1
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• pp.103-119
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• 2005

This study investigated to designand implement web-based collaborative learning system Co-Net and map out students' learning procedure using the system, based upon Student Team Achievement Division (STAD Slavin, 1990, 1996). There are technical process and instructional considerations to be made during the design process. The former are those that concern equipment requirements and specifications and include Ease of Use, Speed of Access, and Flexibility. On the other hand, instructional considerationsare concerned with the delivery and access of instructional materials and their outcomes on learners. They are cooperative interactions within groups and group heterogeneity, learner control, group incentives, individual accountability, equal opportunity for earning high scores and contributing to group effort, task specialization, and competition among groups. A web site for a virtual learning environment designed and built by the authors and known as Co-Net is then explained along with the whole process learners inside the environment. The main page of Co-Net consists of 15 menus to implement cooperative learning process. The cooperative learning activities using 15 menus are composed of six phases (1) preparation of the new knowledge (2) presentation of the new knowledge (3) knowledge assimilation and application (4) team and individual evaluation (5) team and individual recognition Throughout the five phases, the appropriate use of cooperative learning techniques has been shown to have both academic and social benefits to learners.