• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.6
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• pp.1482-1487
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• 2010

Recently, Product and contents using virtual reality technique is spreading quickly. Visualization using virtual reality technique is provide a differentiated experience with existing visualization methodology by giving enhanced immersiveness to users. This paper is make a suggestion to a new methodology of stereo-scope visualization and talk about this utilization possibility. We proposed the design method of stereo-scope realization system that is composed at least two screen. through which users will feel more immersiveness and experience to virtual reality. The suggestion system of this paper will widely used in various industry such as virtual reality exhibitions, shows, games, training programs, etc.

• Proceedings of the KIEE Conference
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• 2001.07c
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• pp.1340-1342
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• 2001

ZnO thin films are Prepared on Si(111) substrate by RF magnetron sputtering. Two-step deposition method is proposed to obtain ZnO thin films with high c-axis (002) TC value and electrical resistivity. This method consists of the following two-step deposition procedures: 1st-deposition for 10$\sim$30 min without oxygen at 100W and 2nd-deposition with oxygen added in the range of $O_2/(Ar+O_2)$ = 10 $\sim$ 50%. SAW filters with IDT/ZnO/Si(111) configuration are also fabricated. From the frequency response characteristics, the insertion loss and the side-lobe rejection are estimated.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.06a
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• pp.298-302
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• 2010

This study proposes a differential method to analyze the properties of the topographic surface driven from lidar imagery. Although airborne lidar imagery provides elevation information rapidly, a sequence of extraction processes are needed to acquire semantic information about objects such as terrain, roads, trees, vegetation, and buildings. For the processes, the properties present in a given lidar data need to be analyzed. In order to investigate the geometric characteristics of the surface, this study employs eigenvalues of the Hessian matrix. For experiments, a lidar image containing university campus buildings with the point density of about 1 meter was processed and the results show that the approach is effective to obtain the properties of each land object Surface.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.06a
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• pp.137-144
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• 2010

Ground digital image data obtained by using DSLR camera can be used to the ground photogrammetry and spatial modeling. Intensity of each pixel in digital video images is the most important parameter to generate digital image. Therefore, it is needed to estimate the parameters and spectral characteristics of digital cameras in order to take more definite intensity data. In this study, using the Sony DSC-F828 DSLR camera, seven digital images are obtained by the continuous shooting. (frame rate, 0.38 seconds). And then extract the value of the intensity from RGB band of each digital color photographs to confirm difference of intensity between frames. The purpose of this study is to confirm spectral characteristics and changes and to estimate correlation through the analysis of statistical in each pixel of R, G, B band.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.06a
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• pp.130-136
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• 2010

This study estimates and evaluates the parameters to relate spectral intensities of aerial and terrestrial images through spectral analysis of each band. For the experiment, an aerial image covering the headquater of the Kyungpook National University was used and terrestrial images were taken by the Sony DSC-F828 DSLR camera. For finding the spectral correspondence, gray intensity, RGB variance, mean, standard deviation were computed, from which parameters of a linear model between patches of both images were computed and evaluated using check patches.

• Journal of Korea Foundry Society
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• v.10 no.3
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• pp.219-224
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• 1990

In this, we have investigated the solute behavior in front of solid-liquid interface according to the change of the cooling rate in bronze alloy and phosphor bronze alloy. The conclusive summary is as follows: 1) The secondary dendrite arm spacing was decreased with increasing the cooling rate. 2) The minimum solute concentration happened to along centerline of primary arm, and the maximum solute concentration was found at the boundary of arm or between the arms the minimum solute concentration was increased with the cooling rate. 3) Segregation Index S was decreased with increasing the cooling rate and content of P. 4) The degree of the microsegregation was decreased with increasing the cooling rate. The effective distribution coefficient, Ke was increased with addition of P in Cu-Sn.

• The Journal of Internal Korean Medicine
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• v.25 no.3
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• pp.648-654
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• 2004

The following case study illustrates the administration of Bojanggunbi-tang in the treatment of a man diagnosed as having Crohu's disease. The usual gastrointestinal symptoms of Crohu's disease are diarrhea, abdominal pain and weight loss, in addition to anemia and rectal bleeding. A l6-year-old man diagnosed with Crohn's disease, who was treated at our clinic, had symptoms such as diarrhea, abdominal pain, weight loss, anemia and rectal bleeding. He was treated with Bojanggunbi-tang. For the two months the symptoms were considerably reduced. The result supports the clinical efficacy of Bojanggunbi-tang for the treatment of the symptoms of suspected Crohn's disease.

• Korean journal of applied entomology
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• v.52 no.3
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• pp.255-259
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• 2013

Two root mealybugs, Ripersiella multiporifera Jansen and Rhizoecus albidus Goux, were collected on imported Dracaena plants (Dracaenaceae) and Schlumbergera truncata (Haw.) Moran (Cactaceae) grown in greenhouses in Korea. Both species were probably introduced into greenhouses via the plant trade. Therefore, it reiterates the need to focus attention on the detection of root mealybugs at the ports of entry to prevent their introduction and establishment in the Korean environment. In this paper, additional information for the two species is provided with diagnoses, photographs along with host plant and distribution data for accurate species identification.

• Proceedings of the Korea Concrete Institute Conference
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• 2003.05a
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• pp.918-923
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• 2003

Reinforced concrete deep beams are commonly used in many structural applications, including transfer girders, pile caps, foundation walls, and offshore structures. The existing design methods were developed and calibrated using normal strength concrete test results, and their applicability th HSC deep beams must be assessed. For the shear strength prediction of high-strength concrete(HSC) deep beams, this paper proposed Softened Strut-and-Tie Model(SSTM) considered HSC and bending moment effect. The shear strength predictions of the refined model, the formulas the ACI 318-02 Appendix A STM, and Eq. of ACI 318-99 11.8 are compared with the collected experimental data of 74 HSC deep beams with compressive strength in the range of 49-78MPa . It is shown the shear strength of deep beam calculated by those equations are conservative on comparing test results. The comparison shows that the performance of the proposed SSTM is better than the ACI Code approach for all the parameters under comparison. The parameters reviewed include concrete strength, the shear span-depth ratio, and the ratio of horizontal and vertical reinforcement. The proposed SSTM gave a mean predicted to experimental ratio of 0.99, 32 percent higher than ACI 318-02 Code, however with the low coefficient variation.

• Korean Journal of Occupational Health Nursing
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• v.29 no.4
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• pp.247-253
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• 2020

Purpose: Multimorbidity is defined as the coexistence of multiple chronic diseases within a person. This study explores the burden of multimorbidity in the working population, focusing on the recent increase in elderly workers in Korea. Methods: We summarized past empirical or theoretical literature. Results: Previous literature shows that about 80% of the elderly are multimorbid, and more than half of people with chronic disease have two or more chronic conditions. Multimorbidity is a common phenomenon in the elderly working population. However, little is known about its prevalence, the factors related to its unequal distribution among workers, and its effects on health outcome measures such as mortality, medical use, and employment decisions. Conclusion: This study asks researchers to focus on a subgroup analysis employing data on the working population. Health professionals need to develop clinical guidelines for multimorbid patients. As multimorbidity is a major health concern in the working elderly, prevention and control should be promoted in the workplace.