• Journal of Korean Society of Steel Construction
• /
• v.16 no.6 s.73
• /
• pp.807-818
• /
• 2004

Experimental tests and theoretical methods of the analysis of the concrete shrinkage behaviors of steel-concrete composite girders are described herein. Steel-concrete composite test specimens were fabricated in the laboratory, and long-term behaviors such as deflections, curvatures, and strains were measured for one year. Test results were compared to the analytical results obtained by using the age-adjusted effective modulus method (AEMM). In addition, composite girders have been analyzed to investigate the effects of several parameters on the concrete shrinkage behaviors. From the long-term test results, it could be used to validate AEMM for the evaluation of the shrinkage behavior of composite girders. Because the shrinkage of the reinforced concrete slab in composite girders may lead to large tensile stresses in the concrete section, the transverse cracking of the slab could occur both in the positive and negative regions. Therefore, if the cracking of concrete would be ignored,it might lead to an overestimation of the stresses of the steel section of composite girders. Based on this research, it is proposed that the effect of transverse concrete cracking on the shrinkage behavior of steel-concrete composite bridges be considered.

• Journal of Digital Convergence
• /
• v.10 no.8
• /
• pp.81-90
• /
• 2012

This study is to establish the effects on B2B(Business-to-Business) industrial product market of the Marketing Communication which used in B2C(Business-to-Customer) has influences on Trust and Trust has influences on Long-Term Orientation through survey targeting 177 wholesale and retail dealers of Air-Tool distribution. Accordance with these conclusions, The Trust that the customer felt for Supplier was a positive influence on Long-Term Orientation. Also advertising of marketing communication is useful for increasing the Trust. Thus, to increase Long-Term Orientation on B2B, supplier needs to increase Trust and to find another marketing communication factors increased Trust is needed.

• Journal of the Institute of Electronics Engineers of Korea SP
• /
• v.38 no.2
• /
• pp.179-190
• /
• 2001

In this proposed study, observing and analyzing contrast enhanced abdominal CT images, we segmented the liver automatically. We computed the ratio of each gray value from the estimated gray value range. With the average value of mesh image, we distinguished the liver from the noise parts. We divided the region based on immersion simulation. The threshold value is determined from the mesh image which is generated from each gray value portion of the liver and is used in dividing the liver to the noise region. To get the outline of the liver, we generated template image which represents the lump of the liver, and subtracted it from the binary image. With the results we use the proposed algorithm using 8-connectivity instead of the present opening algorithm, to reduce the processing time. We computed the volume from the segmented organ size and presented a clinical demonstration with the animal experiment

• Journal of Korea Water Resources Association
• /
• v.30 no.6
• /
• pp.721-729
• /
• 1997

Total scour depth at a bridge is comprised of three components: long-term changes, contraction scour and local scour. Therefore, the analysis of long-term bed elevation changes is very important in the estimation of total scour depth at bridge sites. In this research, long-term bed elevation changes at the Namhan River Bridge are analysed using CHARIMA and HEC-6 models. The results show that, for 5-year steady normal stream flow, the bed elevation is aggreded by 45cm for CHARIMA model but degraded by 5cm for HEC-6 model. For 5-year unsteady flow, the bed elevation is changed greatly and it has a great influence on the estimation of total scour depth. Therefore, to make a proper estimation of total scour depth, not only contraction scour and local scour, but also long-term bed elevation changes should be estimated precisely.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• autumn
• /
• pp.533-536
• /
• 2003

Tn improve the quality in apartment houses, it has regarded one of the most important steps as systematic maintenance. Also, repair and long-term maintenance have played an important role in maintenance of the rental apartment. Moreover, the historical data which come from these works have functioned as preventive maintenance in inspection and references in repair and long-term maintenance. To sum up, it would be necessary to get rid of the factors of dispute from sharing a variety of data among occupants, superintendents, and proprietors. Futhermore, it would be possible to show the management methods of repair and long-term maintenance historical data.

• Journal of the Korean Society for information Management
• /
• v.22 no.2 s.56
• /
• pp.147-164
• /
• 2005

Requirements concerning production of electronic documents and storage are stipulated in the act on document management of public institutions revised in 2003. However, provisions or standards for long term preservation of electronic documents are insufficient and in need of strengthening. This study aims to provide standard factors for long term preservation of electronic documents and thus lay foundation for long term preservation related matters for the establishment of management strategy, ISO 15489 management factor is analyzed as a necessary framework for long term preservation of electronic record at a production stage. Preservation description information is derived from ISO 14721 which is suggesting document management systems to archival institutions. Through this case study, standard registry factors reflecting ISO 15489 and 14721's are suggested in an attempt to improve the act and system environment for long term preservation and archiving.

• The Journal of the Korea Contents Association
• /
• v.9 no.8
• /
• pp.333-340
• /
• 2009

The study aims to look into relations between internet portal images and long-term orientation for continuing growth in the internet portal market with intensifying competition. In detail, the study aimed to identify the effect of the Internet portal image on long-term orientation and the relationship between satisfaction and the intention to recommend. As a result of an empirical analysis, the attribute of the image evaluation of the Internet portal sites was deduced to be a factor which included the affordances of information, entertainment and additional services, customer services, and convenience. All the four areas were found to significantly affect long-term orientation. Specifically, the affordances of information and entertainment and additional services were shown to be the most influential. In addition, the finding turned out that long-term orientation affected significantly consumer satisfaction and recommendation intention, and the satisfaction of relative portal had a significant effect on recommendation intention. These research results are supposed to be useful basic data for establishing competitive strategies of differentiated Internet portals in the market.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.11
• /
• pp.6746-6755
• /
• 2014

This study examined the effect of long-term care utilization on the health care utilization of Medicaid elderly. The subjects were 5,834 long-term care insurance with the level 1 Medicaid elders, who received either service or non-service. This study examined the impact of long-term care service on the probability of health care utilization and the costs of health care utilization. The total medical cost and inpatient day between 2009-2007 were significant factors affecting long-term care utilization (${\beta}=.29$, p< .001, ${\beta}=.33$, p< .001 ) and this variable explained 22.6% of the total medical cost and 22.4% of the inpatient day. The results showed that non-service in long-term care was associated with an increase in health care utilization. The current long-term care insurance system should place higher priority and more resource allocation on long-term care utilization to increase the efficiency of the insurance system.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.15 no.6
• /
• pp.3907-3915
• /
• 2014

This paper provides a solution for long-term unexecuted urban parks and its implication by evaluating the policy elements using an analytic hierarchy process approach. The policy elements evaluation was carried out for a group of experts related to long-term unexecuted urban planning facilities or parks. The evaluation process consisted of the following three steps: the selection of policy elements, the weights assessment, and an analysis of the evaluation results. The empirical findings show that experts place a high value on policy elements, such as government subsidies (0.183), the linkage between a municipal fiscal plan and an executive plan (0.165), a reconsideration of the current long-term unexecuted urban parks (0.154), and a grant or long-term lease of state-owned land (0.110). A wide range of in-depth discussion is strongly needed ahead of the sunset regulation on urban parks, which will take effect in 2015.

• Journal of Korean Society of Archives and Records Management
• /
• v.16 no.4
• /
• pp.79-120
• /
• 2016

Along with the changing computing environment, the production of public documents is moving to G-Cloud and On-nara System, which are re-engineered on G-Cloud. In this process, it is predicted that the Open Document Format (ODF) will replace the proprietary document format, HWP, and will become widely used in the near future. To preserve digital records produced in ODF, this study reviewed the current long-term preservation strategies and identified considerations for new formats. For ODF source files, it is suggested to eliminate the conversion to PDF/A-1 and preserve the documents in the extended ODF with added metadata of records management. Moreover, ODF is presented as an alternative format for preserving proprietary formats. Finally, this study reviewed the current long-term preservation format, i.e., NEO, and suggests a zipped BagIt package, which has an ISO 21320 specification.