• The KIPS Transactions:PartC
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• v.10C no.3
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• pp.273-280
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• 2003

When an existing user authorization systems in Grid access many user to local system and subject DN (Distinguished Name) in a user-proxy authenticate and ID in local system is one-to-one mapping, they have difficulties in ID management, memory resource management and resource management. At this, a variety of subject DN is shared of one local ID in an existing Grid. But this faces many difficulties in applying all requirements for many Grid users. Thus, we suppose user authorization system based on a certificate not them based on ID in this paper. That is, we add user's access level to extension field in a certificate, and make a supposed authorization system decide access limitation level on resources instead of an existing ID mapping methods.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.7 no.6
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• pp.19-28
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• 2004

Segmental Retaining Wall(SRW) has been variously applying in Civil and Architecture construction. Recently, the application of environmental element in all type's structures came to essential requirement, and the construction cases of retaining wall using reinforced soil and block are more increased than the past. But, this trend more widely was spread environmental element as landscape work for the backside of reinforced retaining wall as well as block itself. New environmental block, Greenstone Block, developed to apply of this tendency. The retaining wall system using Greenstone can be environmental constructing at both block itself and backside of retaining wall. The material tests, the axial compressive strength test of block and bending test of fiber-pipe, exercised to design and construction of vertical SRW, which were satisfied NCMA standard. Through this procedure, Rewall (ver 1.0) was developed, which can be automation design of SRW including internal stability, external stability and local stability. And these can be considered setback of retaining wall, as well the examples of vertical retaining wall using block presented to satisfying the follows; strength of reinforced geotextile, height of retaining wall, surcharge, types of backfill and groundwater level etc. Many problems investigated on after or before of construction were due to local failure, insufficiency of bearing capacity and groundwater level. Especially, the local failure was many occurred to during compaction or after construction, and the cases of SRW construction is similar to the results of model test on vertical SRW.

• Proceedings of the KSRS Conference
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• 2005.10a
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• pp.116-119
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• 2005

As to the synthetical estimation of land covering parameters or the compounded land covering classification for multi-resolution satellite data, former researches mainly adopted linear or nonlinear regression models to describe the regression relationship of land covering parameters caused by the degradation of spatial resolution, in order to improve the retrieval accuracy of global land covering parameters based on 1;he lower resolution satellite data. However, these methods can't authentically represent the complementary characteristics of spatial resolutions among different satellite data at arithmetic level. To resolve the problem above, a new compounded land covering classification method at arithmetic level for multi-resolution satellite data is proposed in this .paper. Firstly, on the basis of unsupervised clustering analysis of the higher resolution satellite data, the likelihood distribution scatterplot of each cover type is obtained according to multiple-to-single spatial correspondence between the higher and lower resolution satellite data in some local test regions, then Parzen window approach is adopted to derive the real likelihood functions from the scatterplots, and finally the likelihood functions are extended from the local test regions to the full covering area of the lower resolution satellite data and the global covering area of the lower resolution satellite is classified under the maximum likelihood rule. Some experimental results indicate that this proposed compounded method can improve the classification accuracy of large-scale lower resolution satellite data with the support of some local-area higher resolution satellite data.

• Journal of Agricultural Extension & Community Development
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• v.9 no.2
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• pp.147-160
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• 2002

Although the philosophy of sustainable community development does not give the cure-all solutions for the major problems faced in the communities, it is theoretically and practically recognized as a newly emerging paradigm toward community development theoretically and practically. However, more specific tasks and issues of sustainable community development remain unchallenged and descriptive statements. The main objective of this study was to find out the extensive community development practices through the review of current works in the area of sustainable community development indicator, local agenda 21 and the relative issues. The recommendations of this study were the following; 1) The sustainable community development indicators available in the community level should be selected. Also, how to integrate the objective condition and subjective perception in community development practices, and how to weigh the indicator item should be solved in order to compare and measure the implementation of community development works. 2) In relation to local agenda 21, how to secure the implementation mechanism is more important than the developing the local agenda 21. 3) The policies aimed to raise the resident's awareness, formation of community field, create community social capitals, and define strategies to the selective community development programs should be considered to make the philosophy of sustainable community development active in the field level.

• Microbiology and Biotechnology Letters
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• v.6 no.4
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• pp.167-171
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• 1978

When Asp. niger was shaked at 3$0^{\circ}C$ in 500 mι Erlenmeyer flask with 50 ml of the medium containing 14% of Korean local commercial glucose brand, 0.45% of peptone, and mineral, the citric acid was produced at the level of 37~43 gram per liter in 8 days, and the citric acid production at medium containing X glucose brand was better than that containing Y glucose brand. When the contaminated minerals were removed from the local glucose by Ambelite-IR 120 and peptone by potassium ferrocyanide followed by readjustment of ferric ion content in the medium to 10 mg per liter, the citric acid formation reached 53 gram per liter, a production level of three times higher than that with the original Sakaguchi's medium. The further physiological studies and the mutation of isolated Asp. niger will be needed.

• Journal of the Korean Institute of Rural Architecture
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• v.19 no.1
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• pp.23-34
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• 2017

The purpose of this paper is to suggest the preliminary data for the improvement of the senior centers' indoor environment and the upcoming progress located in rural areas. In wanju county, 81.8% of seniors were enrolled in senior centers, and used the facility everyday. Also, most of the users tended to use the facilities between 12 a.m. and 6 p.m. The majority of users had lunch at the senior centers. The facilities of most senior centers were in poor condition, and some had their restroom outdoor. Also, most senior centers are exposed to high concentrations of carbon dioxide during winter. During this season, the thermal environment in the restroom was bad. However, the users' level of the facilities' satisfaction was positive. Senior centers have been operating the facilities with difficulties, due to the low financial support from the local autonomous organization. The indoor temperature in most centers, especially, was above $30^{\circ}C$ during summer on account of lack of funding for airconditioning. Therefore, it could be recommended that the local autonomous entity start regular check-ups and repairs for the poor indoor environment and facilities, with more financial support and active supervision of the management.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.22 no.5
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• pp.439-444
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• 2009

This paper presents an efficient contact detection algorithm for the plane elastostatic contact problem of the boundary element method(BEM). The data structures of the boundary element method are dissected to develop an efficient contact detection algorithm. This algorithm is consists of three parts as global searching, local searching and contact relation setting to reflect the corner node problem. Contact master and slave type elements are used in global searching step and quad-tree is selected as the spatial decomposition method in local searching step. To set up contact relation equations, global contact searching is conducted at node level and local searching is performed at element level. To verify the efficiency of the proposed contact detection algorithm of BEM, numerical example is presented.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.3
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• pp.345-350
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• 2016

It is the personal information protection law is prepared, in the government, to develop a personal information protection basic plan has been implemented. However, year after year, complaints caused by infringement of personal information in public institutions has increased. In this paper, the recognition level of analysis related to the protection of personal information of local governments, public institutions through a questionnaire survey, raised the need for improvement.

• Journal of the Korea Safety Management & Science
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• v.22 no.3
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• pp.61-68
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• 2020

This study aims to determine the correlation between the apartment resident community and housing satisfaction and suggest which factors can contribute to improving the local community's housing environment and satisfaction by means of the local inhabitants and apartment residents participating in co-managing the community. The study results are as follows. Firstly, the apartment resident community had a positive effect on housing satisfaction but the effects were insignificant. This revealed that residents' interest in communicating with the resident community was low due to various organizations such as the women's association, election committee, and autonomous society being used as means to pursue personal gain rather than the development of the entire apartment. Secondly, the vitalization of the apartment resident community had a positive effect on housing satisfaction. The analysis results showed that the higher the level of unity and volunteering activities of residents, the more improved the resident vitalization programs are being managed, and the higher the level of resident participation, the higher the housing satisfaction. Lastly, this study suggests the supplementation and upgrading of apartment community facilities into complex community facilities as a means to unify the residents and vitalize the resident community. To vitalize the resident community and strengthen the community spirit, the residents will need to voluntarily create a community hub by forming community-tailored associations and programs through connections with local governments and businesses.

• International Journal of Internet, Broadcasting and Communication
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• v.10 no.3
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• pp.59-64
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• 2018

A cooperative spectrum sensing has been proposed to improve the sensing performance in cognitive radio (CR) network. However, cooperative sensing causes additional overhead for reporting the result of local sensing to the fusion center. In this paper, we propose a technique to reduce the overhead of data transmission of cooperative sensing for applying the quantum data fusion technique in cognitive radio networks by omitting the lowest quantized in the local sensed results. If a CR node senses the lowest quantized level, it will not send its local sensing data in the corresponding sensing period. The fusion center can implcitly know that a spectific CR node sensed lowest level if there is no report from that CR node. The goal of proposed sensing policy is to reduce the overhead of quantized data fusion scheme for cooperative sensing. Also, our scheme can be adapted to all quantized data fusion schemes because it only deal with the form of the quantized data report. The experimental results show that the proposed scheme improves performance in terms of reporting overhead.