• Korean Journal of Environmental Agriculture
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• 제18권2호
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• pp.148-153
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• 1999

We conducted this survey to find out the quality of ground water used for agriculture. Water samples mainly collected from plastic film houses which were located at Yongin City, Pyungtaek City, Hwasung Kun and Suwon City in Kyonggi Province. We measured EC, COD, ammonium, nitrate, sulfate, chlorite etc., and sampled three times in 1998. According to our survey, the ground water was suitable for irrigation purpose, but nitrate concentrations in ground water used in the intensive plastic film houses were high enough to require a special consideration or. the water and fertilizing management. On occasion of Pyungtaek, these results showed us specific. There are many differences among regions but aren't among periods on the part of nitrate concentrations. We found ground water quaky got worse as EC and nitrate value were going up. And there was high correlation between them.

• KSCE Journal of Civil and Environmental Engineering Research
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• 제30권3D호
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• pp.313-321
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• 2010

This study analysed the characteristics of residential mobility according to the household's life-cycle to observe the housing filtering process in Busan. The questionary subjects were adult 40 and over who inhabited in Busan and surveyed residential career about residential mobility. The analysis result of statistical data and result of questionary reveals similar result every articles, the summaries are as follows : Examining housing where the respondent live presently, apartment dominate absolutely high ratio as housing type and owner-occupation as housing tenure type, and housing size is about 30 pyeong, dwelling period is 6 years to 10 years. Saving and loan hold a large majority to make housing capital, that means, they apply housing finance to getting own housing despite it is impossible with present household's income to have owner-occupation of desired housing. This is different custom ours from foreign's that rent a house. However, as aspect of residential satisfaction, most household recognised that quality is improved, because residential mobility expanded housing size and changed tenure type and showed fairly high satisfaction with their present resident.

• Korean Journal of Social Welfare
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• 제69권3호
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• pp.213-240
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• 2017

In the harsh period for young adults to prepare their successful life, this study aimed to understand the specific experiences of independence transition among homeless young adults. Also this article explored how their family perform as a supportive system for their independence. Using in depth interview materials of 19~39 aged 8 young homeless males, the research analyzed their family's weak support; no family members, no economic support and breaking relationship. As to occasion of independence, the participants sometimes experienced loss of house, evacuation by their family or runaway from their home. It was abrupt and unexpected leaving home. Also their process of independence was beyond their capacity that they suffered from instability job and destitute rather than continuous mental trauma and isolation. In the end they faced serious risky situations that they cannot manage without any help. The findings of this study suggest that quality of family relationship would be more important than economic capital from family and transition to adulthood of vulnerable young adults who don't have family support need much alternative supportive system and social capital.

• International conference on construction engineering and project management
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• The 9th International Conference on Construction Engineering and Project Management
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• pp.579-586
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• 2022

Modular building is a fast-growing construction method, mainly due to its ability to drastically reduce the amount of time it takes to construct a building and produce higher-quality buildings at a more consistent rate. However, while modular construction is relatively safer than traditional construction methods, workers are still exposed to hazards that lead to injuries and fatalities, and these hazards could be controlled using emerging smart technologies. Currently, limited information is available at the intersection of modular construction, safety risk, and smart safety technologies. This paper aims to investigate what aspects of modular construction are most dangerous for its workers, highlight specific risks in its processes, and propose ways to utilize smart technologies to mitigate these safety risks. Findings from the archival analysis of accident reports in Occupational Safety and Health Administration (OSHA) Fatality and Catastrophe Investigation Summaries indicate that 114 significant injuries were reported between 2002 and 2021, of which 67 were fatalities. About 72% of fatalities occurred during the installation phase, while 57% were caused by crushing and 85% of crash-related incidents were caused by jack failure/slippage. IoT-enabled wearable sensing devices, computer vision, smart safety harness, and Augment and Virtual Reality were identified as potential solutions for mitigating identified safety risks. The present study contributes to knowledge by identifying important safety trends, critical safety risk factors and proposing practical emerging methods for controlling these risks.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제17권2호
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• pp.27-36
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• 2016

Houses have usually been planned for those who are in good physical condition rather than with disabilities. Therefore, it is difficult to provide a high quality residential environment for people with disabilities. To live in their own houses continuously, it is essential to renovate their houses where they have been living. This study focuses on removing the barrier factors from houses by analyzing the characteristics of disability types and purpose of each space. Therefore, this study divides a house into 5 sectors: an accessible path; an entrance hall; a corridor; a living room; and a bedroom to remove the barrier factors from each sector according to the analysis above. As a result, the sectors that show high frequency and importance of renovation should be considered as a top priority for renovation.

• Journal of the Korean Association of Geographic Information Studies
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• 제5권1호
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• pp.1-19
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• 2002

Estimation and indication for spatial distribution of living quality and poor condition associated with land and house's access as a basic human need has been imperative questions and predicaments while it is required to boost digital economic development and consolidate social maturity. Although modern IT and sophisticated GIS/LIS technologies are used to examine spatial analysis of population location-patterns, land uses and development, and environmental degradation, etc, it still might remain immature step to figure out the causations and results of poverty in space and time. In this research, a new approach to poverty management is explicated by using 6 parameters as a major tool for assisting poverty monitoring concerning the poor who are very unpredictable in space and could be regarded as renegades in the Internet age. In addition, it expounds a new approach and conceptual idea for poverty management to notify spatial location of the digital divide when poverty reduction is closely concerned with sustainable goal of land information.

• Journal of the Korea Institute of Building Construction
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• 제10권1호
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• pp.181-191
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• 2010

Lightweight panels are currently used in many ways, such as inner walls of the skyscrapers and residential buildings in Korea. Moreover there has been an increasing of interest in developing construction method and quality improvement as many buildings became higher, because there are more advantages like constructability, finishability, and economic efficiency, etc. than previous heavy weight concrete wall. It is necessary to analyze the characteristics and evaluate the performance of lightweight panels when selecting proper methods and materials to building characteristics and builder's demand. However, there doesn't exist systematic data with a classification of lightweight panels' type and performance. The purpose of this study is to classify domestic lightweight panels by both type of exterior board and construction method, and also to evaluate each performance by surveying user's opinion.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• 제4권1호
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• pp.53-60
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• 2011

In-Home Display (IHD) is one of the most popular ways to induce voluntary customer participation in energy savings. Various communication technologies are used for recent IHD implementations, but most IHD systems are designed for each house because of their limitations such as communication coverage area and operation complexity. In this study, 400MHz RF communication is used for economical large-scale deployment of IHDs especially for apartment complexes that represent typical residentioal environment in Korea. Since it is essential to use internal batteries to increase the usability of IHD, the frequent changes of them should be avoided. By dividing communication data into 3 types such as common data, long term data, and short term data depending on their update periods, energy efficient communication protocol is designed and proposed. In result, the quantity of data and the battery consumption of IHD are reduced to 23.4% and 31.5% each without harming service quality.

• Korean Journal of Plant Resources
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• 제25권5호
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• pp.586-590
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• 2012

This study was conducted to investigate the seedling cultivation methods of Ostericum praeteritum Kitag. The results are as follows ; Ostericum praeteritum transplanted from wild seedlings and seedling cultured in the open field grew quite well, but their bolting rate was higher than other seedlings resulting in low root production. Seedling cultured in tray pot of green house produced good quality root as 426 kg/10a indicating the most adequate seedling method for Ostericum praeteritum production. Main compounds of Ostericum praeteritum roots were found as oxypeucedanin and bisabolangelone, and contents of wild seedlings were lower than theirs of the other seedlings methods.

• Proceedings of the SAREK Conference
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• 대한설비공학회 2009년도 하계학술발표대회 논문집
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• pp.9-14
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• 2009

A variety of Certification systems are initiated, as increased demands for housing quality of building & house owner. New building and apartment built in Seoul metropolitan should acquire Building Energy Rating System and Housing Performance Grade indication System, Green Building Certification System. Building Energy Rating System could be acquired through the certification from energy performance index of environment grade in Housing Performance Grade Indication. Between Housing Performance Grade Indication and Green Building Certification System, There are troublesome to acquire certification because a lot of assessment items are overlapped. At a result, the rational and efficient certification system should be initiated not only to avoid overlap among those certification systems and promote Green Building market share but also efficient certification system operation. We will discuss on assessment items between Housing Performance Grade Indication System and Green Building Certification System and release the improvement method those Certification Systems to avoid overlapping to assessment items.