• Journal of Information Processing Systems
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• v.18 no.4
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• pp.587-598
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• 2022

To increase building change recognition accuracy, we present a deep learning-based building change detection using remote sensing images. In the proposed approach, by merging pixel-level and object-level information of multitemporal remote sensing images, we create the difference image (DI), and the frequency-domain significance technique is used to generate the DI saliency map. The fuzzy C-means clustering technique pre-classifies the coarse change detection map by defining the DI saliency map threshold. We then extract the neighborhood features of the unchanged pixels and the changed (buildings) from pixel-level and object-level feature images, which are then used as valid deep neural network (DNN) training samples. The trained DNNs are then utilized to identify changes in DI. The suggested strategy was evaluated and compared to current detection methods using two datasets. The results suggest that our proposed technique can detect more building change information and improve change detection accuracy.

• International conference on construction engineering and project management
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• 2015.10a
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• pp.21-22
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• 2015

Productivity has been a wide-ranging challenge for the construction industry, both in Australia and globally. Particularly in Western Australia's construction and resources sectors, continuously low productivity will potentially discourage future investments. The emergence of the global marketplace necessitates that the supply chain needs to focus on the concept of the holistic efficiency. The isolated geographical position of Australia only exacerbates this phenomenon. In recent years, Building Information Modelling (BIM) has been suggested as an efficient way to help productivity improve and information management throughout supply chains. This keynote talk will focus on discussing ways of implementing BIM to enhance site productivity focusing on Western Australia's construction projects. It will show new trends of its applications to accomplish an innovative way in construction project management. The talk will also give an insightful summary of integrated methods with state-of-the-art technologies backboned by the BIM cases from construction and oil and gas industry projects.

• Journal of the Korean Society of Physical Medicine
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• v.19 no.2
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• pp.47-54
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• 2024

PURPOSE: This study examined the status and prospects of telerehabilitation to identify the challenges and propose strategies for its promotion both domestically and internationally. The study also focused on the preconditions and improvements required for adopting telerehabilitation, considering technological, institutional, and socio-cultural factors. METHODS: A thorough database search was conducted. The relevant research, papers, and reports were collected, and the literature was evaluated to summarize the findings. RESULTS: Tele-rehabilitation showed promise in enhancing the healthcare service quality and accessibility. However, addressing challenges requires a comprehensive analysis of its status, global research trends, and the formulation of adoption strategies. Research in this direction is expected to improve healthcare services. CONCLUSION: Tele-rehabilitation can enhance healthcare services by overcoming geographical limitations. On the other hand, addressing challenges through analysis and strategic planning is essential for its effective adoption and advancing healthcare quality and accessibility.

• The Journal of Korean Society for School & Community Health Education
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• v.9 no.2
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• pp.91-103
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• 2008

Objectives: This study was performed in order to evaluate the quality of health services provided to the adolescents at mobile health clinics and to improve the services for them, and to figure out knowledge level of adolescents on sex, birth control methods and artificial abortion, and the effect of the knowledge levels those items on sexual behavior. The data obtained will be utilized for sex health education program in the future. Methodology: A total of 2,021 adolescents who visited mobile sexual health clinics in Seoul, Inchon, Busan, Daejon, Cheonbuk, Kwangju and Daegu were surveyed in November 2007. The items surveyed were level of satisfaction about the services provided by mobile sexual health clinics, personal opinions and experience of artificial abortion, knowledge level about birth control, sexual experience and pregnancy. The above mentioned items were analyzed by general characteristics such as religion and geographical area. Results: The study subjects were generally satisfied with the services of mobile sexual health clinics. But they were not satisfied with the information about birth control methods provided by the clinics. The subjects who had better knowledge about sex were more satisfied with the services provided by the clinics. And the subjects who had knowledge about birth control methods but did not have birth control experience were also more satisfied with the services of clinics. The subjects who reported that artificial abortion should be allowed were also more satisfied with the services of the clinics. Experiences of sex, pregnancy, and artificial abortion were not correlated to satisfaction of the clinic services. Conclusions: The mobile sexual health clinics have to continues to provide sex health education and other sex related health services to adolescents. More practical information about birth control methods should be provided to the adolescents by the clinics based on the study results. Active preventive measures for unwanted pregnancy should be provided to the adolescents by the clinics.

• The Korea Journal of Herbology
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• v.32 no.2
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• pp.1-16
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• 2017

Objective : The study was for researching the activation methods about Korean overall medical crops business from 2010 to 2016. In addition, it was to be given to examining complement points and improving methods to the changeable domestic market of medical crops caused by a considerable export-import amount of them. Methods : By examining and analyzing data for the trend of medical crops production and their export-import trend from 2010 to 2015, I found it valuable to use it as the basic resources for researching the urgent problem of medical crops' business and its improvement. Results : 1. As surveying the trend of the domestic medical crops over the recent six years, I found that the export amount of them has drastically decreased, while the import amount has increased. And so, the prices of the domestic medical crops and their production are unstable. 2. By developing standardized medical crops which a trading counterpart country could prefer, we have to promote the export competitiveness. 3. We should reinforce an origin mark and geographical mark practice for domestic herbal materials and expand GMP. 4. We should prepare a standardization of herbal medicines by setting up an independent governmental department. Conclusion : 1. The government should present an appropriate supply-demand amount of the medical crops depending on the domestic needs and the export-import transactions. 2. There should be an institutional supportive system which is able to guarantee stable incomes of farmers through contract cultivation. 3. We should develop high value standardized medical crops.

• Journal of the Korean Geographical Society
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• v.41 no.6 s.117
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• pp.714-739
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• 2006

This study is to analyze the types and management of old maps collected by library and museum in Korea. About 1,200 items of old maps are collected in 39 institutes. This distribution is due to the scatter during late Joseon period through Japanese imperialism period. Half and half of old maps are reserved in museum and library. Atlas of county maps are reserved mainly in Gyujanggak, the National Library of Korea and Library of Korea University There are 10 copies of $\lceil$cheonggu-do(靑邱圖)$\rfloor$ and 25 copies of $\lceil$Daedongyeo-jido(大東輿地圖)$\rfloor$ put in together in all instutes. Forms of those maps in terms of size, picture and place names recorded are different between each other. Methods of management of those maps are different between library and museum. Old maps are treated as rare old books in library, but as traditional old picture in museum. Methods and levels of opening to public of maps are also different in each institute. More serious thing is that there is no specialist in old maps in most institutes.

• Journal of the Korean Geographical Society
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• v.36 no.4
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• pp.458-473
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• 2001

The classified map of geomorphic surfaces is the most basic data for the geomorphological research. Up to recent days, the traditional methods extracting specific geomorphic surfaces are accomplished by analyzing the aerial photographs and topographical maps, and field works. Also it needs a lot of time and expertness. Furthermore it is difficult to gain the aerial photographs in Korea. Since digital maps in Korean Peninsula are almost completed recently, we tried to extract specific surfaces by analyzing the characteristics of marine terraces based on the level of paleoshoreline and slope analysis on the terrace surface using GIS. However, research used GIS was hardly found up to date, therefore many problems are not be solved yet. The aim of this study is to develop the more efficient and objective method for the extraction and classification of specific geomorphic surfaces by using GIS in Gampo-eup, Gyeongju city, Southeastem Coast in Korea, where a lot of traditional research has already accomplished. For this aim, we have designed the process of extracting specific geomorphic surfaces, chosen the factors that was Gyeongiu city, Southeastem Coast in Korea, where a lot of traditional research has already accomplished. For this aim, we have designed the process of extracting specific geomorphic surfaces, chosen the factors that was suitable for classification of specific geomorphic surface, and presented method of setting up optimum criteria of extraction. As last, effectiveness and problems of these methods were investigated through conincidence rate and error rate.

• Journal of the Korean Geographical Society
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• v.42 no.4
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• pp.506-525
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• 2007

Incision into bedrock channel is the primary control of landform evolution, but research into bedrock incision process stagnated for long time. Due to the scaling problem of the application of results from flume studies to bedrock channel, there is a strong need to simulate the bedrock incision process with more realistic models. As a part of investigation into controls of bedrock channel incision, three-dimensional changes of rock surface with abrasion was investigated with physical modelling. 18 rock plates were abraded with various sediment particle size and sediment load and abraded surfaces of the plates were scanned with high resolution 3-D scanner. To identify the spatial pattern of erosion of the rock plates, various methods were used. There was no synthetic or holistic method that showed all features of bedrock plate produced by abrasion, so each plate was analyzed using some available methods. Contour maps, shaded relief maps and profiles show that abrasion concentrated on the centre of plate (cross profile) and upstream and downstream edges (longitudinal profile) and eroded area extended inwards. It also found that the cracks and boundaries of forming materials easily eroded than other parts. Changing patterns of surface roughness were investigated with profiles, regression analysis and spectral analysis. Majority of plates showed decrease in small-scale roughness, but it depends on microstructures of the plates rather than general hardness or other factors. SEM inspection results supported this idea.

• Journal of the Korean Geographical Society
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• v.39 no.5 s.104
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• pp.786-803
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• 2004

These days, interests on land cover classification using not only multi-sensor data but also thematic GIS information, are increasing. Often, although we have useful GIS information for the classification, the traditional classification method like maximum likelihood estimation technique (MLE) does not allow us to use the information due to the fact that the MLE and the existing computer programs cannot handle GIS data properly. We proposed a new method for updating the image classification using multi-spectral and multi-temporal images. In this study, we have simultaneously extended the MLE to accommodate both multi-spectral images data and land cover data for land cover classification. In addition to the extended MLE method, we also have extended the empirical likelihood ratio estimation technique (LRE), which is one of non-parametric techniques, to handle simultaneously both multi-spectral images data and land cover data. The proposed procedures were evaluated using land cover map based on Landsat ETM+ images in the Anmyeon-do area in South Korea. As a result, the proposed methods showed considerable improvements in classification accuracy when compared with other single-spectral data. Improved classification images showed that the overall accuracy indicated an improvement in classification accuracy of $6.2\%$ when using MLE, and $9.2\%$ for the LRE, respectively. The case study also showed that the proposed methods enable the extraction of the area with land cover change. In conclusion, land cover classification produced through the combination of various GIS spatial data and multi-spectral images will be useful to involve complementary data to make more accurate decisions.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.6
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• pp.569-576
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• 2011

Recently the establishment of high accuracy 3D spatial information has been largely stimulated according to the increase in need of such 3D spatial information. In the fields of constructions and civil works, studies on increasing the productivity in these fields through converging them with other fields using the established 3D spatial information have been conducted. In such a tendency, BIM (Building Information Modeling) technologies have been rapidly applied to the fields of constructions and civil works. In particular, in the fields of constructions and civil works that represent a life span of plan-design-construction-maintenance, some BIM application methods and plans for the characteristics in each step have been proposed. Thus, the objective of this study is to simulate a project that is reasonable and can be optimized in connection with 3D spatial information and BIM technologies escaped from the conventional civil construction process that is based on empirical, statistical DB, and 2D information. For achieving this objective, 3D terrain data for the subject area engaged in this study using aerial photographs and airborne LiDAR was established. Also, a counter plan for the issues, which cannot be solved in the conventional methods for managing civil work projects, is applied through implementing bridge-based civil structure BIM by combining them with objective information.