• Journal of Korean Society of Steel Construction
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• v.18 no.6
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• pp.687-696
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• 2006

An efficient numerical method is developed to estimate the elasto-plastic post-buckling strength of space-framed structures. The inelastic ultimate strength of beam-columns and frames is evaluated by the parametric study. Applying the improved plastic hinge analysis that evaluate the gradual stiffness decrease effects due to spread of plasticity, elasto-plastic post-buckling behavior of steel frames is investigated considering the various residual stress distributions. Introducing the plastification parameter that represent pread of plasticity in the element and performing parametric study of equivalent element force and member idealization, finite-element solutions for the elasto-plastic analysis of space frames are compared with the results by plastic region analysis, shell elements and experimental results.

• Journal of Environmental Science International
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• v.14 no.10
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• pp.905-910
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• 2005

The purpose of this study is the comparative analysis of Susan citizens' images of Eulsook-do as a coastal tourism destination before and after the construction of a road bridge across the Nakdong estuary in order to analyze local people's changes in leisure patterns. Analysis of the images of a pre-construction Eulsook-do that people aged both 40 and less and 50 and more had on five dimensions showed values higher than zero(0) that suggests neutral image, while their images of a post-construction Eulsook-do showed the shrinking size of pentagon on all five dimensions: ET(Entertainment), CA(Culture & Art), EE(Environment & Ecology), RC(Recreation) and LP(Leports) dimensions. Its pre- and post- construction image analysis conducted 20 years after it came to be built finds that the road bridge construction has led to the ecological, environmental disruption of the coast and the lower Nakdong river, having negative influence on the images of Eulsook-so.

• Korean Journal of Computational Design and Engineering
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• v.5 no.2
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• pp.113-121
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• 2000

A compact pre- and post-processor that runs on PC has been developed for the purpose of remote CAE. This includes a linear-finite-element-analysis module for on-site analysis of simple and midium-sized structural problems and an interfacing module for remote analysis of more complex cases such as nonlinear and large-scale linear problems which are cpu-consuming to solve. The software was designed to provide convenient interfacing capability for the use of client-server-type analysis. In this paper, the interface module was specially designed to use ABAQUS on the supercomputer. As a benchmark for the remote CAE, a sheet-forming simulation was perfomed on a PC networked with the supercomputer.

• Journal of the Korean Society for Advanced Composite Structures
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• v.1 no.4
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• pp.13-17
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• 2010

A post-tensioned slab bridge is analyzed by the specially orthotropic theory. Each longitudinal and transverse steel layer is regarded as a lamina, and material constants of each lamina is calculated by the use of rule of mixture. This slab bridge with simple support is under uniformly distributed vertical and axial loads. In this paper, the finite difference method and the beam theory are used for analysis. The result of beam analysis is modified to obtain the solution of the plate analysis. The result of this paper can be used for post-tensioned slab bridge analysis by the engineers with undergraduate study in near future.

• Journal of Korean society of Dental Hygiene
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• v.3 no.1
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• pp.59-72
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• 2003

The purpose of this study was to examine what the role of denial hygienist was. The subjects were 751 dental hygienists from dental clinics, dental hospitals, general hospitals, public dental clinics and their branches throughout the nation. After a survey was conducted, the collected data were analyzed with SPSS WIN 10.0, and variance analysis and post-analysis were implemented. And Forgarty's 8th integrated model, out of 10 ones, was selected to delve into the practical role of dental hygienist in detail. The findings of this study were as follows: 1. The three age groups had a significantly different opinion on the significance of individual subjects. The dental hygienists of thirty six and over found the basic and preventive public dental care courses most important, and the 31~35 age group placed most stock in education and research. Overall, the post-analysis results showed that prevention and clinical courses were considered most vital, followed by education and fundamental courses. 2. There was a significant gap between four groups from the different work places in their view of the weight of the individual subjects. According to the post-analysis, the dental hygienists from the general hospitals, public dental clinics and their branches gave more weight to fundamental, education and research areas. Those who were with the dental clinics, dental hospitals and general hospitals put higher value on clinical course than the dental hygienists from the public dental clinics and their branches. 3. Two groups with a different career also had a different outlook on the importance of the individual subjects. The post-analysis results illustrated that the dental hygienists who had worked for three years or more put higher stress on the fundamental course than those with a less career, and the dental hygienists with a five-year or higher career attached more importance to the education and research field than those with a smaller career. 4. There was a significant difference between the three age groups in their clinical role. The post-analysis results indicated thai the younger dental hygienists were more of assistants than of professionals, as they chiefly took X-ray photograph, handled treatment materials or performed treatment-related works. Overall, handling treatment materials was most common. 5. The three groups from the different work places significantly varied in their clinical role. According to the post-analysis, those from the dental clinics and dental hospitals took more x-ray photographs, handled more treatment materials and performed more relevant works, compared to those from the general hospitals, public dental clinics and their branches. 6. The two groups with a different career differed significantly in their clinical role. The post-analysis results suggested that the dental hygienists with a less career played an assistant role more, which handled treatment materials or carried out other relevant works. 7. The fundamental courses (I) and (II), preventive class (I) and (II) and its practice course were regarded as integrated subjects that they should take 10 offer preventive treatment, which was one of the dental hygienist missions. What's needed to act as dental-care educators was the basic courses (I) and (II), dental hygiene education and its practice. Finally, integrated clinical courses (I) and (II) and clinical practice were viewed as necessary for their role performance as dental treatment collaborators.

• Structural Engineering and Mechanics
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• v.65 no.5
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• pp.621-631
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• 2018

In this paper, an exact analytical solution is developed for the analysis of the post-buckling non-linear response of simply supported deformable symmetric composite beams. For this, a new theory of higher order shear deformation is used for the analysis of composite beams in post-buckling. Unlike any other shear deformation beam theories, the number of functions unknown in the present theory is only two as the Euler-Bernoulli beam theory, while three unknowns are needed in the case of the other beam theories. The theory presents a parabolic distribution of transverse shear stresses, which satisfies the nullity conditions on both sides of the beam without a shear correction factor. The shear effect has a significant contribution to buckling and post-buckling behaviour. The results of this analysis show that classical and first-order theories underestimate the amplitude of the buckling whereas all the theories considered in this study give results very close to the static response of post-buckling. The numerical results obtained with the novel theory are not only much more accurate than those obtained using the Euler-Bernoulli theory but are almost comparable to those obtained using higher order theories, Accuracy and effectiveness of the current theory.

• Journal of Distribution Science
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• v.15 no.1
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• pp.71-81
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• 2017

Purpose - Consumers heuristically have a specific stereotype on the price level of individual retail format because each format provides them with a different level of purchase satisfaction and emotional benefits. However, if price image which is consumers' overall impression of the aggregate price level of a retailer does not match with their expectations, its price level would be perceived as unfair. It will eventually lead to dissatisfaction and decreased revisit intention. Focused on department store and discount store, this study was designed to verify whether the price fairness plays a role of mediating effect on two influential relationships between price image and post-purchase satisfaction, and price image and repatronage intention. Research design, data, and methodology - A main survey was conducted to 140 students and 128 effective responses were used for the related analysis. T-test, factor analysis, reliability test, and mediated regression analysis were performed. Six hypotheses were developed to examine the mediating effect of price fairness on the two influential relationships between price image and post-purchase satisfaction, and price image and repatronage intention. It was also examined whether the price image of two different retail format is formed differently or not. Results - People perceived the price images of the two retail formats differently. Overall price level of department store is much higher than that of discount store. Analysis results showed that price image did not solely have a significant influence on post-purchase satisfaction unless price fairness as a mediating variable is added. Price fairness turned out to be having a significant influence on relationship between price image and repatronage intention. It influences on repatronage intention directly and also via price fairness. Conclusions - Post-purchase satisfaction can be achieved only if people perceive the price image as fair no matter how the price level is high or low according to traits of retail formats. If they think it's not fair, they would disapprove of the rightness for the price image, and also express their dissatisfaction with it. Consumers willingly make repeated visits to a store if they are convinced of appropriate price level which is perceived as fair, and if they experienced a satisfaction with overall benefits a particular store offered.

• Journal of Korean Academy of Nursing
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• v.43 no.6
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• pp.801-811
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• 2013

Purpose: To investigate changes in Quality of life (QOL) and related factors in patients with thyroid cancer undergoing Radioactive Iodine remnant ablation (RAI). Methods: Data were collected longitudinally 3 times for 6 months (2 weeks post-surgery, post RAI, 3 months post RAI) in a hospital located in Seoul. Questionnaires were used to measure levels of physical symptoms, anxiety, depression, and QOL. Ninety-eight patients with thyroid cancer who had RAI were included in the analysis. Data were analyzed using SPSS (18.0). Results: Findings for the three data collection times respectfully were: mean scores for physical symptoms, 0.53, 1.21 and 0.62, patients with depression, 47%, 36.7% and 37.7%, patients with anxiety, 18.4 %, 19.4% and 20.4%, mean scores for QOL, 7.06, 7.01 and 7.28. QOL score was highest 3 months post RAI (p=.031). In the stepwise multiple regression analysis, depression and fatigue were predicting factors for low QOL at all data collection times. Dysponia was a predicting factor for low QOL post RAI and 3 months post RAI. Conclusion: To increase QOL, it is necessary to provide information in advance regarding physical & psychological symptoms and to develop nursing intervention programs to decrease depression and fatigue.

• Journal of the Korean Society for Railway
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• v.9 no.2 s.33
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• pp.151-159
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• 2006

It analyzed the mechanical behaviors of non-ballasted railway bridge (steel plate girder type) with ballast reinforced on the finite element analysis, field test and laboratory test far the static and dynamic responses. The major objective of this study is to investigate the effects and application of reinforcement for steel plate girder railway bridge by the external post-tensioning method. The reinforcement of non-ballast railway bridge had obviously stable dynamic behaviors due to the additional dead force which was ballast. But in case of static behaviors, static displacements and stresses had increased nearly the allowable values. Therefore we analyzed the mechanical behaviors of non-ballasted railway bridge with ballast reinforced and external post-tensioning reinforced on the finite element analysis and laboratory test for the static and dynamic behavior. As a result, the reinforcement of ballasted railway bridge the external post-tensioning method are obviously effective for the additional dead force which is ballast. The analytical and experimental study are carried out to investigate the post-tension force decrease bending behavior and deflection in composite bridge for serviceability. The servicing railway bridge with ballast reinforced has need of the reasonable reinforcement measures which could be reducing the effect of additional dead load that degradation phenomenon of structure by an unusual. stresses and a drop durability.

• Computational Structural Engineering
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• v.2 no.4
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• pp.69-77
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• 1989

Until recently post-processing of finite element model has been heavily relied on expensive graphic peripheral devices. With the aid of inexpensive microcomputers, very economical post-processor graphics program called MICRO-POST has been developed. Model geometry or results of analysis for the unlimited meshes can be easily presented in a number of low-cost graphic devices. The paper presents the procedure obtaining the device-independent graphics, and the structure and functions of the program. It also describes efficient I/O scheme to overcome the memory limitation, and dialogue-type input technique to control the plot operation in an interactive manner. Through the post processing examples for the general purpose finite element programs, it demonstrates the usefulness of the program.