• Journal of Agricultural Extension & Community Development
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• v.20 no.4
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• pp.871-907
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• 2013

The purpose of this study is to establish a new rural development policy system based on the unit of a community organizations. This study is to complement or replace the existing rural development system which is based on the unit of rural villages. The communalism which is the core concept of traditional rural villages has been weakened or destroyed. Especially, economic, social and spatial communalism of a rural villages has been weakened rapidly in the process of industralization and urbanization for the last 50 years. This means that strong communalism inside rural villages and neighborhood independence from each others among rural villages are already weakened. Rural villages no longer represent rural area, unlikely the hypothesis policy makers have been used to set up rural development policies. Advanced countries like EU and Japan are well known to have a rural development policy based on the units of social organizations in the rural area. These policies have been on the main stream in the era of local decentralization. Rural resident's organization made rural site's development plan using local assets and submitted to the public sector. Then the public sector examine its value and possibilities as a rural development projects. And public sector finalize the decision on subsidy grant. These policy patterns are already introduced partly in the field of urban development programme as well as rural development programme. It is time to apply those policies more widely and to examine more systematically.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.14 no.2
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• pp.335-341
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• 1994

Laboratory model test results for bearing capacity of a square shallow foundation supported by a sand layer reinforced with layers of geogrid have been presented. Use of geogrids provides an economical and time efficient method for improving load-settlement, and strength characteristics of weak soils. Especially the geogrid reinforced soil will be necessary in the case of foundations supporting machines, embankments for railroads, and foundations of structures in earthquake-prone areas. Based on the present model test results, the bearing capacity ratio (BCR) with respect to the ultimate bearing capacity (UBC), at levels of limited settlement of the shallow foundation. has been determined. Also, it appears that significant improvement in the UBC of medium sands can be achieved by reinforcing elements which shows promise for future work.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.14 no.4
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• pp.933-939
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• 1994

This paper has primarily been directed to evaluate the beneficial effects of geogrid reinforcement in a medium sand on the ultimate bearing capacity (UBC) of a surface foundation. Also, this study was conducted to investigate the permanent settlement of a shallow square foundation in improving the cyclic load-settlement characteristics of reinforced sand deposits by conducting a series of laboratory model tests. Use of geogrids provides an economical and time efficient method for improving load-settlement and strength characteristics of weak soils. Especially the geogrid reinforced soil will be necessary in the case of foundation supporting machines, embankments for railroads, and foundations of structures in earthquake-prone areas. Finally, the test results indicate that the use of geogrid reinforcement in sand subgrades improves their performance under dynamic loads which shows promise for future work.

• Journal of the Korea institute for structural maintenance and inspection
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• v.22 no.2
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• pp.83-89
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• 2018

In this study, the settlement of concrete rectangular pyramid foundation on soft ground is investigated based on a finite element analysis. considering the grounding load and the grounding area of square pyramid foundation, we compensate the insufficient design bearing capacity and investigated the effect of settlement by load. Based on this study, it is found that the rectangular pyramid foundation shows the smallest settlement of three different type of foundations. As a result of this study, it was resulted that the square pyramid foundations were more effective than the crushed stone foundations by 18%. These results show that the ground pressures of the square pyramid bases are divided into horizontal and vertical stresses, so it is analyzed that the horizontal stress builds up the rigid ground on the foundation of the structure and distributes the load widely to increase the resistance to the overhead load.

• Land and Housing Review
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• v.1 no.1
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• pp.67-73
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• 2010

Method of protruding steel bar embedded in PHC pile for connecting with foundation plate is an intermediate form of fixed and hinged connection and has often been used in architectural structures such as apartment complex. However, mechanical properties of this method have not been proved and its construction process is not simple. In this study, therefore, by analyzing previous research and by considering ratio of steel bar and concrete in PHC pile, which is minimum reinforcement of rebar, the newly optimized method of reinforcing joint of PHC pile and foundation plate is suggested with respect to PHC pile type (PHC 450, PHC 500, and PHC 600). To assess mechanical properties (ultimate tensile and shear strength) of joint of PHC pile and foundation plate, full scale experimental tests are performed. As a result, all cases are satisfied with required design criteria and can be practically applied. Our results indicate that reduction of rebar reinforcement compared to previous method would lead cost saving in PHC pile construction.

• Geotechnical Engineering
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• v.2 no.3
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• pp.67-78
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• 1986

This paper presents how to determine the system reliability of a typical shallow foundation constituted four potential correlated failure modes of hearing capacity (BCM), consolidation settlement (CSM), moment (MFM), and tension shear (PCM). Through the idenfication of the distinct and different modes and evaluation of range of system reliability, the obtained conclusions are as follows; 1. The CSM and the PCM are the lowest and highest of reliability indices of single performance function, and the BCM and the MFM are medium of them. 2. For the correlated failure modes, the hi-modal bounds Is narrower and lower of failure probability than the unimodal bounds. Not to be overestimated, therefore, the system reliability should be based on the second-order bounds using correlated performance functions.

• Korean Journal of Social Welfare Studies
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• v.47 no.4
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• pp.93-120
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• 2016

This study aims to elaborate differences of demand and supply in welfare service delivery upon regions. For this purpose, in-depth interviews were conducted with 15 welfare bureaucrats from Dong offices among largest and smallest portions of recipients in Seoul. The results indicated that there were significant differences in the proportion of welfare bureaucrats versus welfare recipients (11-450 households) of the National Basic Livelihood Guarantee System, the amount of available private sector resources, and the difficulty of providing visitation counseling upon regions. Research implications were discussed further to address regional disparities of welfare services.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.555-555
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• 2016

본 연구는 낙동강 유역의 대표지점별 과거 수문자료의 타당성을 검토하고, 발생된 오류에 대해서는 표준화된 방법으로 수정 보완하여 하천유량 적정관리를 위한 기초 통계자료를 구축하는데 그 목적이 있다. 따라서 수문자료의 정확성 확보와 향후 자료의 활용성을 증대하기 위하여 낙동강홍수통제소의 수문관측소를 중심으로 수위, 수위-유량관계곡선식, 유량자료를 다양한 근거자료 및 수문자료의 특성 등을 고려하여 기초적인 통계자료 구축을 위해 노력하였다. 과거자료를 검토한 결과 2000년대를 기점으로 수위자료의 정확도가 향상되는 것으로 판단하였으며, 사용자에게 신뢰성 있는 자료를 제공하기 위하여 2000년도 이후의 수위자료와 수위-유량관계곡선식을 수집하여 검토?분석하였고, 자료 보완을 통하여 신뢰성 있는 유량자료를 구축할 수 있도록 하였다. 대상지점 12개소에 대하여 취득기간별에 따른 각종 기초통계 특성에 대하여 요약 정리하였다. 자료의 취득률은 대부분 90% 이상의 양호한 결과를 나타내었지만, 몇몇 지점에서는 수위자료의 불안정으로 인하여 60% 이하를 나타내는 지점 또한 존재하였다. 연평균 손실고는 평균강수량에서 유출고를 뺀 값을 나타내고, 이에 대한 유출률을 산정하였다. 또한 취득기간 동안의 평균 풍 평 저 갈수량을 분석하였다. 치수 및 이수 측면을 고려하여 최고유량과 이에 대한 발생일을 조사하였으며, 최저유량의 경우는 7일 평균 최저유량과 이에 대한 발생일을 조사하였다. 최저유량 발생일은 7일 중 중간일을 기준으로 표시하였고 조석이나, 지속적인 배수의 영향을 받는 지점은 홍수위 및 홍수량에 대해서만 산출하였다. 비록 2000년 이전 자료에 대해서는 현실적인 한계로 인하여 검토를 실시하지 못하였으나, 최소 10년간의 자료에 대해서는 신뢰성을 확보하기 위한 노력을 기울였으며, 이러한 경험으로 다시는 재현되는 않는 자연현상에 대한 현장단위에서의 관측 및 측정뿐만 아니라 이를 바탕으로 축적된 자료의 구축, 검증을 통한 DB 구축 등에 더욱 각고의 노력이 필요할 것으로 판단된다.

• KOREAN POULTRY JOURNAL
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• v.27 no.9 s.311
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• pp.163-169
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• 1995

본 연구는 우리나라 고유의 재래닭을 수집하여 유전적 특성에 따른 계통을 육성하고 그 능력을 검정하므로서 재래닭 육용화사업의 기초계로 활용하기 위하여 1994년 6월 10일 수집된 종란의 입란을 시작으로 1994년 7월 1일 재래닭 기초세대 3계통 2,677수와 로드종 411수 및 나고야종 234수, 총 3,322수를 입식하여 능력검정을 실시하였으며 26주령까지의 중간성적을 요약하면 다음과 같다. (1)수정율 재래닭 평균의 $90.28{\%}$로 로드종이나 나고야종보다 높았으며 그 중 황갈색계통이 $91.01{\%}$ 로 가장 높았다. (2)부화율은 재래닭 평균이 $68.68{\%}$로 그리높은 편은 아니었으나 로드종이나 나고야종보다는 높았으며 황갈색계통이$69.46{\%}$로 그 중 가장 높았다. (3)육추율은 재래닭 평균이 $96.64{\%}$로 로드종과 비슷한 성적을 보였으며 흑색계통이 다소 낮았고 적갈색 및 황갈색계통은 $97.58{\%}$,$97.94{\%}$로 높았다. (4)육성율은 재래닭 평균이 $98.61{\%}$로 로드종과 비슷하였으며 계통간에도 별 차이없이 고른 성적을 보였다. (5)육성기 발육성적은 4주, 8주, 12주 및 16주 체중에서 재래닭 평균이 각각 235.31g, 640.16g, 1,002.47g 및 1,242.43g 으로 나타났으며 전기간에 걸쳐 흑색계통이 비교적 높은 경향이었다. (6)시산일령은 재래닭 평균이 154.15일로서 로드종보다는 약 12일 정도 늦었으며 재래닭 계통간에는 서로 별 차이를 보이지 않았다. (7)시산시난중은 재래닭 평균이 35.15g으로 로드종에 비해서는 약 35.83g 으로 타계통보다 다소 무거웠다.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.31 no.1
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• pp.337-356
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• 2020

The purpose of this study is to recommend practical guidelines for developing and operating makerspaces in public libraries. Using the results of prior research, this study examines eight public library makerspaces across key elements, including space, size, staff, equipment, programs, and budget. This study finds that public library makerspaces should be built according to the library's size, budget, and purpose, and should also employ sustainable operating strategies. On that basis, this study suggests three models of guidelines for implementing and developing makerspaces in public libraries: the "craft" makerspace at the basic level, the "studio" makerspace at the intermediate level, and the "platform" makerspace at the regional level.