• Ocean and Polar Research
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• v.35 no.4
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• pp.383-394
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• 2013

The purpose of this study is to demonstrate, through case studies, the usefulness of utilizing local R&D centers under science and technology ODA programs. For the past few decades, advanced countries have supported ODA projects of developing countries, but there have been negative opinions regarding the results. Through a case study of the black pearl cultivation project between the Korea Institute of Ocean Science & Technology and Micronesia, this study explains the usefulness of actively utilizing Korean R&D centers established and operational in recipient countries. Although black pearl cultivation is not an ODA project, the case study offers valuable insights as it is operated in a similar form and thus highly applicable to future projects. Based on the case study, four implications were derived to ensure the successful operations of science and technology ODA projects in the future. First, there is a need to improve relevance by making use of the technological capacities of local R&D institutes to develop projects that reflect the needs of recipient and donor countries. Second, trust must be established with local communities over the long term in order to enhance the effectiveness and efficiency of project operations. Third, the proportion of science and technology ODA projects must be expanded to acquire sustainability, and more support should be granted to ODA projects involving marine resources, which are an advantage for countries of Micronesia. Lastly, the locals should be offered employment opportunities and regular training programs to allow for the actual transfer of knowledge instead of mere techniques. The implications derived in this study will prove useful in pursuing science and technology ODA projects, especially with Micronesia.

• Korean Journal of Childcare and Education
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• v.9 no.4
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• pp.107-133
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• 2013

The purpose of this study was to examine and compare the perceptions of mothers about the Nuri curriculum for 5-year olds. The subjects were 382 mothers whose 3-5-year old children went to kindergartens (192 mothers) and daycare centers (190 mothers). The findings were as follows: First, the majority of the mothers knew that the Nuri curriculum for 5-year olds started to be carried out in 2012, but many of them weren't told about the details at all. Second, the mothers considered the Nuri curriculum necessary, and were roughly satisfied with the ongoing Nuri curriculum for 5-year olds. Third, there was no difference in the mothers' perceptions of environmental factors required for the Nuri curriculum. Fourth, the mothers whose children went to kindergartens chose warm and enthusiastic character as important quality of teachers. The mothers whose children went to daycare centers chose friendly and caring character as important qualities of teachers. Fifth, the mothers perceived that the Nuri curriculum was relatively useful for the qualitative improvement of early childhood education and childcare. Sixth, the majority of the mothers didn't have their children transfer to another early childhood education institution after the Nuri curriculum for 5-year olds was carried out.

• Journal of Trauma and Injury
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• v.25 no.4
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• pp.188-195
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• 2012

Purpose: An increase in the demand for specialized Trauma Centers led to a government-driven campaign, that began in 2009. Our hospital was selected as one of the Trauma Centers, and we reviewed data on trauma patients in order to correlate the mortality at a regional Trauma Center with its contributing factors, such as the severity of the injury, the means of arrival, and the time duration before arrival at our center. Methods: Data on the patients who visited our Trauma Center from January 2010 to November 2011 were retrospectively reviewed using electronic medical records. The patients who had revised trauma scores (RTSs) less than 7 or injury severity scores (ISSs) greater than 15 were included. The patients were categorized as survivors and non-survivors, and the means of arrival as transferred or visited directly. Time durations before arrival of less than one hour were also taken intoconsideration. Results: Two hundred(200) patients were enrolled, and the mortality rate was 36.5%. The most common cause of the accident was an automobile accident, and the most common cause of death was brain injury. The RTSs and the ISSs were significantly different in the non-survivor and the survivor groups. The mortality rate of the patients who were transferred was not statistically different from that of patients who visited directly. However, a time duration before arrival of less than one hour was statistically meaningful. Conclusion: The prognosis of the trauma patients were correlated with the severity of the trauma as can be expected, but the time between the incidence of accident and the arrival at hospital and whether the presence of transfer to trauma center were not statistically significant to the prognosis.

• Journal of Broadcast Engineering
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• v.27 no.1
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• pp.133-145
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• 2022

Compared to the continuously increasing dog population and industry size in Korea, systematic analysis of related data and research on breed classification methods are very insufficient. In this paper, an automatic breed classification method is proposed using deep learning technology for 14 major dog breeds domestically raised. To do this, dog images are collected for deep learning training and a dataset is built, and a breed classification algorithm is created by performing transfer learning based on VGG-16 and Resnet-34 as backbone networks. In order to check the transfer learning effect of the two models on dog images, we compared the use of pre-trained weights and the experiment of updating the weights. When fine tuning was performed based on VGG-16 backbone network, in the final model, the accuracy of Top 1 was about 89% and that of Top 3 was about 94%, respectively. The domestic dog breed classification method and data construction proposed in this paper have the potential to be used for various application purposes, such as classification of abandoned and lost dog breeds in animal protection centers or utilization in pet-feed industry.

• Journal of Trauma and Injury
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• v.25 no.4
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• pp.145-151
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• 2012

Purpose: The objective of this study was to determine the appropriateness of Emergency Medical Service's (EMS's) triage and transport of severely injured patients in Busan and Kyungnam, Korea. Methods: The medical records of the Emergency Medical Information Center were retrospectively reviewed from January 1, 2010 to December 31, 2010. We identified the number of patients that should have been transferred from a secondary to a tertiary hospital according to the EMS field triage protocol. Results: In a total of 472 cases requests to be transferred to a third hospital were made through the Emergency Medical Information Center. Of these, 207 patients(43.9%) should have been transferred to a tertiary hospital according to the EMS field triage protocol. Among them, thirty-three(15.9%) patients satisfied step 1, 15(7.0%) satisfied step 2, and 117(56.5%) satisfied step 3. Twenty-three(11.1%) patients satisfied both steps 1 and 3. Conclusion: We found the triage by the EMS in the transfer of severely injured patients to a tertiary hospital to be inappropriate and re-education of EMS personnel regarding the EMS field triage protocol is needed. Because many patients are transferred from a secondary to a third hospital, we suggest changing the EMS field triage protocol to expand the severe injury criteria. A need exists to authorize secondary hospitals to transfer severely injured patients directly because there are no trauma centers in Korea.

• Bulletin of the Korean Chemical Society
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• v.7 no.5
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• pp.395-399
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• 1986

Intramolecular proton transfer equilibria of acetamide and methyl carbamate have been studied theoretically by MNDO MO method. For both substrates, carbonyl-O protonated tautomer was found to be the most stable form, the next most stable one being N-protonated form. Gas phase proton transfers take place by the 1,3-proton rearrangement process and in all cases have prohibitively high activation barriers. When however one solvate water molecule participates in the process, the barriers are lowered substantially and the process proceeds in an intermolecular manner through the intermediacy of the water molecule via a triple-well type potential energy surface; three wells correspond to reactant(RC), intermediate(IC) and product complex(PC) of proton donor-acceptor pairs whereas two transition states(TS) have proton-bridge structure. General scheme of the process can be represented for a substrate with two basic centers(heteroatoms) of A and B as, $$ABH\limits^+\;+\;H_2O\;{\to}\;ABH\limits^+{\cdots}{\limits_{RC}}OH_2\;{\to}\;AB{\cdots}H\limits_{TS}^+{\cdots}{\limits_{1}}OH_2\;{\to}\;AB{\cdots}{\limits_{IC}}H\limits^+OH_2\;{\to}\;BA{\cdots}H\limits_{TS}^+{\cdots}{\limits_{2}}OH_2\;{\to}\;BA H\limits^+{\cdots}{\limits_{PC}}OH_2\;{\to}\;BAH\limits^+\;+\;H_2O$$ Involvement of a second solvate water had negligible effect on the relative stabilities of the tautomers but lowered barrier heights by 5∼6 Kcal/mol. It was calculated that the abundance of the methoxy-O protonated tautomer of the methyl carbamate will be negligible, since the tautomer is unfavorable thermodynamically as well as kinetically. Fully optimized stationary points are reported.

• Journal of Practical Engineering Education
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• v.15 no.2
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• pp.519-528
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• 2023

Recently, for the preservation and transmission of cultural heritage, various researches and content development based on technologies such as virtual reality, augmented reality, and extended reality, which are the core technologies of the 4th industrial revolution era, are being conducted. Intangible cultural heritage is variable, unlike tangible cultural heritage, so it changes greatly depending on time and space, and as a result, it is in danger of being discontinued due to the aging and death of the inheritors. In this study, the current status and cases of related realistic content production were collected and analyzed, focusing on statistical data, intangible cultural heritage training centers through search portals, and platform cases. As a result of the analysis, it was found that overall, there were very few cases of use in content and transfer education using intangible cultural heritage. Through this study, we will consider ways to revitalize the effective transfer education of intangible cultural heritage that is on the verge of being cut off from transmission.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.22 no.2
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• pp.251-257
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• 1998

Active mufflers have been mainly applied in the large industrial engine due to considerable expense for implementation, but a necessity of development has been increased by the tightened regulation of exhaust noise and the request of high power. In this study, the active muffler prototype for installing in an automobile is designed and constructed. The active muffler is designed so that the primary noise and the control sound are propagated as a plane wave in the outlet. Therefore, the error microphone could be placed outside the high temperature centers of the tail pipe, and the noise radiating to the outside could be reduced in the whole areas around the outlet. For evaluating the control performance of the prototype, the control experiments of band-pass filtered random signal and the modulation of sinusoidal signal which are generated from the primary noise speaker as practical exhaust sound level are implemented. And to investigate the radiation pattern from the outlet of tail pipe and the noise reduction level of points placed adjacent to the outlet, the sound level of adjacent points of thirty is measured.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.29 no.9 s.240
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• pp.1049-1056
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• 2005

A conservative pressure-based finite-volume numerical method has been developed for computing flow and heat transfer by using an unstructured grid system. The method admits arbitrary convex polyhedra. Care is taken in the discretization and solution procedures to avoid formulations that are cell-shape-specific. A collocated variable arrangement formulation is developed, i.e. all dependent variables such as pressure and velocity are stored at cell centers. Gradients required for the evaluation of diffusion fluxes and for second-order-accurate convective operators are found by a novel second-order accurate spatial discretization. Momentum interpolation is used to prevent pressure checkerboarding and the SIMPLE algorithm is used for pressure-velocity coupling. The resulting set of coupled nonlinear algebraic equations is solved by employing a segregated approach, leading to a decoupled set of linear algebraic equations fer each dependent variable, with a sparse diagonally dominant coefficient matrix. These equations are solved by an iterative preconditioned conjugate gradient solver which retains the sparsity of the coefficient matrix, thus achieving a very efficient use of computer resources.

• Progress in Superconductivity and Cryogenics
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• v.5 no.2
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• pp.20-29
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• 2003

As power systems grow more complex and power demands increase, the need of underground transmission system is increasing gradually. But it is very difficult and high in cost to construct new ducts and/or tunnels for power cables in metropolitan areas. HTS (High Temperature Superconducting) cable can carry very high current densities with strongly reduced conductor loss and allow high power transmission at reduced voltage. Therefore HTS cable can transfer more power to be moved in existing ducts, which means very large economical and environmental benefits. A development project for a 22kV class HTS cable is ongoing at a research centers, and the cable manufacturer in Korea. In this paper, we carried out investigation for application of 22kV class HTS cable in Korean utility networks. The results show that the HTS cable is applicable to replace IPB in pumping-up power plant, withdrawal line in distributed generation, withdrawal line in complex power plant, and conventional under ground cable. Finally, as the cost of HTS wire and refrigeration drops, the technical and economical potential of HTS cable is evaluated positively.