• Journal of Digital Convergence
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• v.16 no.7
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• pp.1-8
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• 2018

In Korea, water supply capacity and facility investments had been emphasized around the 1980s. The water pricing have gained focuses in water policy since the 1990s. This study analyzes a water demand and estimates the relation of water demand and other socio-economic variable, using econometric models on the city of Busan. Water price and income are two key elements to explain water demand. Modeling approach using translog function provides better results, and water demand responds positively to population and income. Energy and water prices are negative factors in deciding water demand. It is requested that water pricing needs to reflect more production costs. Alternative approaches such as water saving facilities by household and use of digital water information should be emphasized for efficient water management in a local community.

• Journal of the Korean Institute of Gas
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• v.16 no.3
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• pp.1-7
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• 2012

Natural gas through pipeline is supplied to consumers after its pressure gets down compulsorily. The waste pressure energy of this process can be restored by use of turbo expander which can produce electricity. So, turbo expander conducts two functions - pressure reduction and power generation. The power amount is the enthalpy difference between the inlet and outlet states. The five main factors which affect economic profit are facility price, produced power amount, pre-heating amount, electricity cost, and fuel gas cost. Power generation depends mainly on flow amount because inlet and outlet states are fixed. A methodology to estimate economy in irregular flow pattern is proposed and using this way, a case study was carried out.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.34 no.1
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• pp.5-26
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• 2023

This study was employed as a basic study to make a medium and long term development plan for a library system in Nowon-gu, Seoul. This study investigated the characteristics and local conditions of Nowon-gu, and analyzed public library system that can promote the development of the library by understanding the current state of the public library, the library's facility status, collections, manpower, and programs. Through the survey, the frequency and purpose of library use of local residents, users' opinions on satisfaction, collection development, expected roles, and policy directions were investigated. Depending on SWOT analysis, missions and strategies for midto long-term development plans for Nowon-gu Library were devised. Based on the research results, researchers proposed strengthening future education, reading culture, sustainable environmental library, and Nowon-gu cultural platform as development strategies.

• Journal of Environmental Impact Assessment
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• v.33 no.1
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• pp.42-51
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• 2024

Recently, as e-commerce has been activated and the demand for daily logistics services has increased due to the COVID-19 pandemic, the development of small logistics facilities has increased rapidly. Logistics facilities are concentrated in certain areas in Gyeonggi-do, where transportation is convenient, with large hinterland cities, showing a rapid increase. This study analyzed development characteristics such as development scale, development method, floor area ratio, and use area for a total of 259 logistics facilities developed in three local governments: Anseong, Yeoju, and Icheon. Logistics facilities developed in a specific area are developed in the form of undeveloped development in non-urban areas, causing damage to the national land environment and social conflict. This study proposed institutional improvement measures and evaluation guidelines for eco-friendly development that can solve problems such as indiscriminate development, environmental impact, and conflicts with residents caused by logistics facility development.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.12
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• pp.5207-5215
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• 2010

Selecting proper location for complex facility with special purpose need comprehensive consideration on the condition and surrounding environment. Especially, in case of living space for human, lighting, ventilation, efficiency in land use, etc. are important elements. Diverse 3D analysis through 3D topography modeling and virtual simulation is necessary for this. Now, it can be processed with relatively inexpensive cost since high resolution satellite image essential in topography modeling is provided with domestic technology through Arirang No. 2 satellite (KOMPSAT2). In this study, several candidate sites is selected for complex planning with special purpose and analysis on proper location was performed using the 3D topography modeling and land information. For this, land analysis, land price calculation, slope analysis and aspect analysis have been carried out. As a result of arranging the evaluation index for each candidate site and attempting the quantitative evaluation, proper location could be selected efficiently and reasonably.

• The Journal of the Korea Contents Association
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• v.14 no.2
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• pp.494-505
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• 2014

Residential site should have pedestrian road passing through the center of the site just for convenience and safety. However, apartment complexes developed in the past, the sites are just stuck by walls and pedestrian roads are not placed, inhabitans have difficulties for facility use and safety. Therefore, residents solve the problems as follows: they utilize the spaces, between apartment building and the wall, as walking route, and demolish the parts of the wall for connecting sites. In this study, it was thought that pedestrian road could be emplaced at the wall space between sites. For this, a low-rise apartment complex in Gwangju was selected developed in 1990s, and whether the space for pedestrian road was examined. The width from 2.4m to 8.0m could be secured, and there could be placed the pedestrian road at the wall space. However, this study is limited for the possibility of securing space, for the opinion of residents that might be damaged from the pedestrian road did not reviewed.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.26 no.6
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• pp.561-569
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• 2008

Currently, satellite image, aerial image and airborne laser scanning data are mostly used to build 3D image models. However, we are in need of quality 3D image models as current models cannot express topographic and features most elaborately and realistically. When making 3D image models, the model is first built and textures from terrestrial photos are applied to add realistic features to the model. This study analyzed techniques to use photogrammetry and laser scanning data to create a 3D image models with topography, building and statue that emphasize spatial accuracy, delicate depiction and photo-realistic imaging. 3D image models with spatial accuracy and photographic texture were built to be served via 3D image map services systems on the internet. The 3D image models can be used for various purposes, such as daylight and view right analysis, landscape analysis, facility management system.

• Proceedings of the Korea Contents Association Conference
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• 2008.05a
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• pp.436-440
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• 2008

Complete consideration on condition and surrounding environment shall be performed to select proper location for complex planning or establishment of facility with special purpose. Especially, in case of living space for human, lighting, ventilation, efficiency in land use, etc. are important elements. Diverse 3D analysis through 3D topography modeling and virtual simulation is necessary for this. Now, it can be processed with relatively inexpensive cost since high resolution satellite image essential in topography modeling is provided with domestic technology through Arirang No. 2 satellite (KOMPSAT2). In this study, several candidate sites is selected for complex planning with special purpose and analysis on proper location was performed using the 3D topography modeling and land information. For this, land analysis, land price calculation, slope analysis and aspect analysis have been carried out. As a result of arranging the evaluation index for each candidate site and attempting the quantitative evaluation, proper location could be selected efficiently and reasonably.

• Smart Media Journal
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• v.11 no.4
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• pp.19-29
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• 2022

Recently, with the development of IoT technology, the number of farms using smart farms is increasing. Smart farms monitor the environment and optimise internal environment automatically to improve crop yield and quality. For optimized crop cultivation, researches on predict crop productivity are actively studied, by using collected agricultural digital data. However, most of the existing studies are based on statistical models based on existing statistical data, and thus there is a problem with low prediction accuracy. In this paper, we use various predition models for predicting the production and sales profits, and compare the performance results through models by using the agricultural digital data collected in the facility horticultural smart farm. The models that compared the performance are multiple linear regression, support vector machine, artificial neural network, recurrent neural network, LSTM, and ConvLSTM. As a result of performance comparison, ConvLSTM showed the best performance in R2 value and RMSE value.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.9
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• pp.348-354
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• 2018

This study proposes MF (Model Filter)-based M-BDL (MF-based BIM Data Linkage), which is a model filter-based data mapping method for BIM (Building Information Modeling)-BEMS linkage. Recently, BEMS (Building Energy Management System) is actively utilizing 3D spatial information. This allows the user to intuitively manage the facility energy linked to spatial information. To use BIM data in energy management systems, it is essential to link BEMS with BIM data only in terms of the user requirements. On the other hand, if the BIM is a rich dataset and is linked as it is, the user will need to manage the unnecessary information. By mapping only the data required for BEMS in heavy BIM data through M-BDL, the BIM data can be lightened and the amount of data required for maintenance can be reduced. This technology proposes a mapping method that can link the BIM data with the filtered BIM data.