• Journal of the Institute of Electronics Engineers of Korea SC
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• v.46 no.1
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• pp.10-21
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• 2009

In order to enhance the contrast in the regions where the pixels have similar intensities, this paper presents a new histogram equalization scheme. Conventional global equalization schemes over-equalizes those regions so that too bright or dark pixels are resulted and local equalization schemes produce unexpected discontinuities at the boundaries of the blocks. The proposed algorithm segments the original histogram into sub-histograms with reference to brightness level and equalizes each sub-histogram with the limited extents of equalization considering its mean and variance. The final image is determined as the weighted sum of the equalized images obtained by using the sub-histogram equalizations. By limiting the maximum and minimum ranges of equalization operations on individual sub-histograms, the over-equalization effect is eliminated. Also the result image does not miss feature information in low density histogram region since the remaining these area is applied separating equalization. This paper includes how to determine the segmentation points in the histogram. The proposed algorithm has been tested with more than 100 images having various contrast in the images and the results are compared to the conventional approaches to show its superiority.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.17 no.5
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• pp.200-209
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• 2018

This study proposed a method to select existing facilities as a landmark in order to reset accumulated errors of dead reckoning in a tunnel difficult to receive GNSS signals in automated driving. First, related standards and regulations were reviewed in order to survey 'variety' on shapes and installation locations as a feature of facilities. Second, 'recognition' on facilities was examined using image and Lidar sensors. Last, 'regularity' in terms of installation locations and intervals was surveyed through related references. The results of this study selected a fire fighting box / lamp (50m), an evacuation corridor lamp (300m), a lane control system (500m), a maximum / minimum speed limit sign and a jet fan as a candidate landmark to reset positioning errors. Based on those facilities, it was determined that error correction was possible. The results of this study are expected to be used in repositioning of automated driving vehicles in a tunnel.

• Korean Journal of Agricultural Science
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• v.8 no.1
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• pp.126-132
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• 1981

Rice grains harvested from paddy fields around industrial areas of Kyongin, Iri, and Jeonju were taken and analysed the contents of heavy metals which were considered to be accumulated in those rice grains. Atomic absorption spectrophotometer was applied for analysis of heavy metals such as copper(Cu), zinc(Zn), lead(Pb) and cadmium (Cd) in unpolished rice grains. The content of Cu in rice grains harvested from Iri was the lowest, 2.94 ppm, while those from Seo-Myon, Shiheung-Gun was the highest, 3.65 ppm. The contents of Zn and Pb in rice grains were ranged 20.56~27.21 ppm and 0.38~0.53 ppm, respectively. Cd content were exceptionally lower than the regulated level, 1.0 ppm. The content of this metal detected in rice grains from Seo-Myon was the highest, 0.509 ppm, but those of other areas were much lower, ranged 0.040~0.136 ppm. The present concentrations of Cu, Zn, and Pb in rice grains were also lower than the expected level and below the maximum permissible concentrations.

• Korean Journal of Social Welfare
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• v.60 no.4
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• pp.157-173
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• 2008

Cultural welfare is the cultural activity provided and supported by state, a local autonomous entity, and private organizations to improve the quality of people's life. And as a basic concept as well as a premise of discussion on cultural welfare, cultural right is a social right, a right which can make cultural express, gain access to cultural activities. A statue concerning cultural activities contributed to the promotion of our people's cultural welfare interwoven with cultural right. But laws were made for the purpose of enforcing national policy and supporting regime rather than promoting fundamental human rights, and they became effective and were understood as a mere part of national government, not as perspective of their execution, security of right or realization of them. On the other hand, based on laws concerning social welfare, cultural life means human life consisting of minimum welfare system, and minimum level of life which guarantees least cultural life is becoming an objective standard. This means the standard level of cultural right, and for the handicapped cultural rights are concretely guaranteed as a right in that they will not be discriminated for their approaching to cultural activities. However, laws concerning cultural activities have limitation in that there are ambiguous concept and limitation of cultural life, and there are no concrete and active laws about cultural rights to guarantee cultural life. In a constitution and laws concerning social welfare, cultural welfare must have concrete contents about the range and the level of cultural rights. In order cultural rights to be turned into complete ones which can assert its rights, as seen in the Supreme Court, a court has to try to understand the violation of cultural rights as the violation of legal rights.

• Convergence Security Journal
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• v.15 no.6_2
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• pp.11-17
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• 2015

Private security guard certification system was recognized as a national certification in 12. 2012 after it was first given in 2006 as a civil certification and then became a national test in 2013. Thinking it short of regulations on some of exemptible requirements as well as test-taking age limit due to the certification's specificity, the current researcher tried to present the following improvement plans. First, in taking the test, only the bottom age limit is given with no top age limit, so a regulation on its top age limit needs to be newly made so that it can select those substantially able to protect persons. Second, it can expand some of its exemptible requirements to not only police civil officials, private security guard civil officials but also military civil officials and college graduates who have taken all the courses for its primary test and have career in private security guard. Third, certain validity period can be set by standard of the date when the certification test application is accepted after retirement from related occupations so that they can maximally exert their ability in actual works. Fourth, the exemptible courses of the test must be limited to the primary test only while its hands-on test must not be exempted to meet the requirement of the ability for actual personal protection. In this manner, it's necessary that the personal protection certification system, as a national certificate, should be carefully reviewed to keep abreast with the growing civil protection industry.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.20 no.3
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• pp.237-247
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• 1987

The present study deals with the physico-chemical and meteorological conditions in Porphyra-cultivation ground to determine the relationship between laver production and its environmental factors in Kwangyang Bay from January to April in 1986. As a result, major environmental factors which are thought to have a great influence upon the poor harvest during the cultivation period are as follows; 1) the excessive rainfall in the beginning of cultivation period 2) the accumulation of suspended matters on the thallus of laver 3) the decrease of current velocity and the stagnation of the water in the cultivation ground.

• Journal of Bio-Environment Control
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• v.24 no.4
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• pp.287-295
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• 2015

This study was conducted to find the suitability site selection for the construction of Saemangeum horticulture complex taking into account cost-effective environmental management by analyzing and comparing meteorological conditions. The study sites were regions around the Saemangeum area in which the development of an industrial complex extending 28,300 ha is planned. We collected meteorological data in 12 candidate sites and established a rating scheme and thematic maps. We selected ten themes by consulting experts using a questionnaire. Selected ten themes is Summer, 20 days max. temp. mean, Winter, 20 days min. temp. mean, Summer, 90 days temp. mean, Winter, 90 days temp. mean, Year-round, max. wind velocity, Year-round, wind velocity mean, Winter, 90 days solar radiation mean, Year-round, number of foggy days, Year-round, 1 day max. rainfall and Spring. 90 days humidity mean. And we set ratio-based weights for the evaluation parameters.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2003.04a
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• pp.274-279
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• 2003

위성영상을 이용한 새만금 지역의 DEM생성을 위하여 waterline method를 사용하였으며, 총 13개의 Landsat thematic mapper (TM) 위성영상 자료를 이용하여 1991년과 2000년 기준의 DEM을 생성하였다. 현장 수준측량 자료를 이용하여 생성된 DEM의 정밀도 검증을 실시하였으며, 2002년 3월에 100m 간격으로 측정된 실측자료를 이용하였다. 해안선 추출은 density slicing 방법을 사용하였으며, 사용된 밴드는 육지의 경계를 구분하는데 많이 쓰이는 밴드 4번, 5번 및 6번 밴드를 선택적으로 사용하였다. 절대고도 값의 대입을 위하여 waterline 추출에 사용된 위성영상의 획득 시간에 대해 해양조사원의 10분 간격 실측 조위를 사용하였으며, 추출된 13개 waterline의 최저 조위는 58cm 이고 최고 조위는 537cm 이다. 추출된 해안선에 수준측량 자료를 이용하여 검증한 결과 RMS 오차 9.91 cm, 표준편차 9.78 cm의 정밀도를 갖는 2000년도 DEM을 생성하였다. 새만금 지역의 waterline 추출 과정에서 만경강과 동진강 하구 지역은 강에 의한 에너지의 유입, 유출로 인한 변화가 심하여 두 지역을 DEM 생성에서 제외하였다. 이렇게 생성된 과거(19991년도) DEM과 현재(2000년도) DEM을 이용한 지형변화 비교는 두DEM 차이로 9년간의 새만금 조간대 변화를 계산하였다. 군산공항지역의 지형변화는 거의 없는 것으로 나타났으며, 새만금 방조제가 건설된 이후 개화도 주변지역의 변화가 가장 두드러진 지형적 변화로서 방조제 입ㆍ출구 지역은 빠른 유속에 의해서 과거에 비해 침식이 우세하며, 방조제에서 육지로 갈수록 퇴적이 우세한 것으로 관측되었다.보체계의 구축사업의 시각이 행정정보화, 생활정보화, 산업정보화 등 다양한 분야와 결합하여 보다 큰 시너지 효과와 사용자 중심의 서비스 개선을 창출할 수 있는 기반을 제공할 것을 기대해 본다.. 이상의 결과를 종합해볼 때, ${\beta}$-glucan은 고용량일 때 직접적으로 또는 $IFN-{\gamma}$ 존재시에는 저용량에서도 복강 큰 포식세로를 활성화시킬 뿐 아니라, 탐식효율도 높임으로써 면역기능을 증진 시키는 것으로 나타났고, 그 효과는 crude ${\beta}$-glucan의 추출조건에 따라 달라지는 것을 알 수 있었다.eveloped. Design concepts and control methods of a new crane will be introduced in this paper.and momentum balance was applied to the fluid field of bundle. while the movement of′ individual material was taken into account. The constitutive model relating the surface force and the deformation of bundle was introduced by considering a representative prodedure that stands for the bundle movement. Then a fundamental equations system could be simplified considering a steady state of the process. On the basis of the simplified model,

• Korean Journal of Food Science and Technology
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• v.49 no.3
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• pp.311-317
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• 2017

In this study, the phenolic content and antioxidant activity of rice cooked using different methods with different amounts of germinated brown rice (10, 20, 30, and 50%) were compared. Germinated brown rice was cooked using general and high-pressure cooking methods with and without fermented alcohol. Pasting characteristics decreased, and total polyphenol and flavonoid contents, and DPPH and ABTS radical scavenging activities increased with increasing amounts of germinated brown rice. Moreover, germinated brown rice cooked by general cooking method with fermented alcohol showed higher antioxidant activity than that showed by rice cooked by other cooking methods. The results obtained in this study are expected to serve as basic data for manufacturing of processed products.

• Journal of Conservation Science
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• v.33 no.3
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• pp.189-201
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• 2017

This study focused on the Gaya mural tomb located in Goa-ri, Goryeong-gun, North Gyeongsang Province, Republic of Korea. Environmental factors such as ambient temperature, relative humidity and surface temperature, and microbial distribution on mural tombs were monitored for one year to gather data on the conservation environment of the mural tombs. The average internal temperature difference with reference to the ambient outer temperature was observed to be $11.7^{\circ}C$ for the monitoring period and the internal temperature of the tomb was found to change periodically every one or two months in response to the outer temperature. The highest temperature was observed in September and the lowest in March. The relative humidity in the mural tomb remained constant at 100%. Between December and April, condensation occurred on the ceiling of the main room of the tomb, where the murals are located. On the ceiling of the aisle, the condensation occurred throughout the year. The inside and surface wall were isolated from microorganisms, which could grow when a suitable growth environment suitable is established. Based on microbial growth temperature conditions, risk periods of microbial hazards were established, where in the period from August to October was identified as the most dangerous.