• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.2
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• pp.97-104
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• 2018

Recently, many studies have examined UAVs (unmanned aerial vehicles), which can replace and supplement existing surveying sensors, systems, and images. This study focused on the use of UAV images and assessed the possibility of utilization in areas where it is difficult to obtain GCPs (ground control points), such as disasters. Therefore, 3D (dimensional) pointcloud data were generated using UAV images and the absolute/relative accuracy of the generated model data using GCPs and without GCPs was assessed. The results showed the 3D shape pointcloud generated by UAV image matching was proven if the relative accuracy was set, regardless of whether GCPs were used or not; the quantitative measurement error rate was within 1%. Even if the absolute accuracy was low, the 3D shape pointcloud that had been post processed quickly was sufficient to be utilized when it is impossible to acquire GCPs or urgent analysis is required. In particular, the results can obtain quantitative measurements and meaningful data, such as the length and area, even in cases with the ground reference point surveying and post-process.

• Proceedings of the Ginseng society Conference
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• 2004.05a
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• pp.17-28
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• 2004

As Korean ginseng is hybrid, an individual variation is very severe, and it takes long times in new breeding because it is required 4 years to pick the seed. But, transformation technique makes the high-functional breeding in short time. The focus of these ginseng studies is to find and secure the useful gene. And it is urgent to accumulate the fundamental data for the molecular breeding and secure the useful genes. Therefore, transformation and soil acclimatization technique are necessary to molecular breeding in use of the introduction of functional genes. In this study, it add to secure of new regulation gene and useful gene as to accumulate the fundamental data for the place where it will contribute to raise the national competitive power. To analyze the useful genes in large scale, we constructed CDNA libraries with various tissues, species, and treated tissue. EST analysis of ginseng perform in large scale and build the EST database of ginseng. We perform the full length sequencing about the selected lots of clones that include the entire open reading frame of the amino acid residues and construct cDNA chip with the parental EST clones. Establishment of the transformation and a soil acclimatization system throuth the re-introduction of the selected ginseng gene that related with the secondary metabolism and anti-stress into the ginseng.

• Journal of the Korean Association of Geographic Information Studies
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• v.26 no.4
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• pp.173-187
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• 2023

In an era of population decline, depopulated regions facing challenges in attracting inbound population migration must enhance urban vitality through the attraction of living populations. This study focuses on Busan, a city experiencing population decline, comparing the spatiotemporal distribution characteristics of registered residents and living populations in various administrative districts (Eup-Myeon-Dong) using mobile communication big data. Administrative districts are typified based on population change patterns, and regional characteristics are analyzed using indicators related to urban decline and vitality. Spatiotemporal distribution analysis reveals generally similar density patterns between registered residents and living populations; however, a distinctive feature is observed in the city center areas where the density of registered residents is low, while the density of living populations is high. Divergent trends in spatial patterns of change between registered residents and living populations show clusters of registered population decline in low-density areas and clusters of living population decline in high-density areas. Areas adjacent to declining living populations exhibit large clusters of population changes, indicating a spillover effect from high-density to neighboring areas. Typification results reveal that, even in areas with a decline in registered residents, there is active population influx due to commuting or visiting. These areas sustain an increase in the number of businesses, confirming the presence of industrial and economic growth. However, approximately 47% of administrative districts in Busan are experiencing a decline in both registered residents and living populations, indicating ongoing regional decline. Urgent measures are needed for enhancing urban vitality. The study emphasizes the necessity of utilizing living population data as an urban planning indicator, considering the increasing limit distance of urban activities and growing interregional interaction due to advancements in transportation and communication.

• Journal of National Security and Military Science
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• s.1
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• pp.155-190
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• 2003

The objective of this study is to provide basic information for planning and practicing social welfare services for married nurse officers serving in the Korean military. For such a purpose, this study identifies the difficulties which married nurse officers have faced and the necessary services which are supposed to alleviate them. The data were collected by sending a questionnaire to 114 married nurse officers from July 16 to August 10, 2001. The results of this study are as follows: First, the married nurse officers were relatively dissatisfied with such domains as child care and education, health, and housing. And among the thirty-four problems, the married nurse officers expressed the most serious dissatisfaction with the difficulty in attending the events held in child's school, lack of children's dormitory run by the military, difficulty in adjusting to the school due to frequent house-moving, and limited access to dental care. Second, the married nurse officers needed services in domains such as housing, child care and education, and health. Specifically, they wanted the military-run housing, child care facility within military hospitals, maternity leave for child care and education, extension of risk allowances, and support for BOQ. Third, with regard to the seriousness of problems as well as the priority of services, the married nurse officers gave higher priority to such domains as child care and education, health, and housing. These results indicate that married nurse officers were to the largest extent concerned with these three domains and that they had the urgent need for services relevant to those domains. The importance of routine need assessments as well as solutions to the family-related problems for married nurse officers is therefore suggested in this study.

• Journal of the Korean Society of School Health
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• v.27 no.3
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• pp.189-195
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• 2014

Purpose: This survey was to investigate the differences in smartphone addiction symptoms by the level of addiction among college students in S. Korea. Methods: Two hundred and thirteen university students survey data was collected from December 5th to 9th of 2011 using Smartphone Addiction Scale. 25.3% (n=54) of total respondents were categorized as highly addicted and 28.17% (n=60) were as non-addicted group. Results: There were significant differences in total addiction symptom scores, daily life disorders, loss of self control, pathological concentration, and compulsive symptoms between two groups. There were significantly differences in total addiction symptoms, daily life disorders, loss of self control, pathological concentration, and compulsive symptoms between two groups. Highly addicted group were significantly higher in total addiction symptom scores (3.26 times), daily life disorders (4.96 times), loss of self control (3.07 times), pathological concentration (3.07 times), and compulsive symptoms (2.86 times) compared to non-addicted one. Highly addicted group had significantly higher daily usages of smartphone and were more satisfied with smartphone than non-addicted group. The purpose to use was related to academic works rather than games or entertainment. However satisfaction on academic achievement was very low. Conclusion: The smartphone addicted symptoms related to academic works were significantly high in highly addicted college students so that it disturbed their daily life and psycho-social health in general. It is clear that the highly addicted college students need urgent distinctive interventions such as creative academic guides.

• Atmosphere
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• v.19 no.1
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• pp.53-66
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• 2009

The purpose of this study is to describe the roles of carbon dioxide in the climate change, and carbon dioxide reduction policies in some countries. In addition, ways to cope with climate change in Korea are also discussed. Currently, global temperatures are rising due to the carbon dioxide produced by human beings. Global temperatures will rise approximately $6^{\circ}C$ until 2100 if we emit carbon dioxide at a present rate. Temperature rise will affect the terrestrial and oceanic resources, and ultimately influence the socio-economic structures including political stability. Most of the carbon dioxide comes from fossil fuels. Therefore, it is urgent to reduce the use of energy, which comes from fossil fuels. Solving the climate change due to the increases in carbon dioxide is a global problem. Korea should participate in the international community and cooperate with each other in order to reduce the carbon dioxide concentration. No policy was announced for the reduction of carbon dioxide so far. Korea should make a policy for the reduction of carbon dioxide in a specific year compared to that of certain standard year such as 1990 or 2005. Making policy should be based on the scientific result of the amount of carbon dioxide emitted and absorbed. Germanwatch announced the Climate Change Performance Index (CCPI) in order to evaluate an effort to reduce the carbon dioxide for 56 countries which emits 90 % of global carbon dioxide. Ranking for Korea is 51 among 56 countries. This clearly indicates that the appropriate carbon dioxide reduction has not been exercised yet in Korea. Researchers have a moral responsibility to provide updated new ideas and knowledges regarding climate change. Politicians should have a sharp insight to judge the ideas provided by researchers. People need an ethics to reduce the carbon dioxide in every day's life. Scientific research should not be influenced by stress caused by external budget and negative impact of capitalism. Science should be based on the pure curiosity.

• Korean Journal of Construction Engineering and Management
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• v.13 no.6
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• pp.45-53
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• 2012

Recently, with achieved US$ 500 Billion international cumulative construction order, the Korean government presented overseas construction industry visions for international orders of US$ 100 Billion and entering the top five countries in global construction market. Also, Korean companies are developing strategies for expansion of international markets. However, ODA loan projects are low risk for the Korea Construction companies trying to advance their overseas business. This study provides data-based advice on securing competence for Korean construction companies entering the global market through the ODA loan projects. To analysis construction firm's competitiveness for ODA loan project, FGD was utilized and BSA model was applied to the valuable analysis. Competencies highly assessed were construction quality control, relationship building through high-level diplomatic activities, and project management. Competencies requiring urgent improvement were handling risks of local countries, financing projects, and developing know-how within participating companies.

• The Journal of Asian Finance, Economics and Business
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• v.7 no.12
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• pp.1035-1043
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• 2020

Project manager plays a very important role in the success of any project. The primary duty of the project manager is to combine the outcomes or results of the various processes and activities of project management into a systematic project management strategy or plan for the project. In the construction industry, a lack of motivation is an urgent problem for many project managers in construction and engineering projects. Lack of motivation affects the quality and productivity of jobs, reducing profits and growth for companies, businesses, contractors or organizations that rely on human resources. The reasons for this lack of motivation are diverse ranging from salary to culture to life and working environment, among others. Through surveys and data analysis using Cronbach's Alpha reliability and EFA (Exploratory Factor Analysis), our research scaled the factors affecting work motivation of project managers in the construction industry in Vietnam. The research results identified six major groups of relevant factors including (i) salary and benefits, (ii) work environment, (iii) promotion opportunities, (iv) organizational culture, (v) interest in the job, and (vi) relationship with the organization. From there, this paper contributed useful information as well as measures for businesses, companies, contractors or organizations in the construction industry.

• Spatial Information Research
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• v.23 no.6
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• pp.31-41
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• 2015

This research is primarily intended to explore a novel way to monitor desiccation of inland wetland by combining MNDWI (Modified Normalized Difference Water Index) and NDVI (Normalized Difference Vegetation Index). The changes for vegetation and water condition on Upo Wetland located at southeastern Korea were investigated by MNDWI and NDVI derived from 2002, 2010 and 2015 Landsat data. The integrated use of MNDWI and NDVI made it possible to identify area-wide vegetation cover changes and to assess water storage changes on multi-annual time scales simultaneously. Comparing MNDWI with NDVI reveals the quantitative evidences for anthropogenic and environmental influences (such as road, building, water) causing an accelerated wetland desiccation. In fact, our monitoring approach raises critical issues regarding the hydrological cycle and its inter-annual changes for inland wetland under threat of drying up and highlights the important role of MNDWI and NDVI integration for any urgent or long-term treatment plan. This research presents scientific and objective evidences to support integrated approach of NDVI and MNDWI in exploring drying up trends of wetlands.

• The Journal of the Korea Contents Association
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• v.20 no.11
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• pp.192-203
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• 2020

Remodeling is urgent as the number of closed factories in the industrial complex increases due to the long-term economic decline. Accordingly, the government is promoting the remodeling of a closed-up factory as one of the industrial complex restructuring projects underway to restore the competitiveness of aging industrial complexes. The purpose of this study in to analyze the feasibility of remodeling of 4 closed-up factory in an industrial complex. In details, this study analyzes the factories that need to be remodeled with the reasonable grounds, and suggests in what order and manner the remodeling should proceed. The data were collected from literature review and on site field survey. As a result of the study, the feasibility of remodeling was recognized in all four closed factories, but Factory A was found to require a more detailed rental attraction plan and management operation plan. The final conclusions were verified through working-level meetings and experts' advise.