• Journal of the Institute of Electronics Engineers of Korea SP
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• v.41 no.6
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• pp.285-294
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• 2004

Median Filters in the Signal Processing have been most widely used and have demonstrated the most strongest effects. This paper proposes the Adaptive Median Filters by using noise detection. The basic algorithm of the proposed filters is to determine whether noise or not by the each noise judgement standards, and then take the Median Filter if it satisfies the conditions as a result of judgement and returns to the original image(No Filters) if not. This paper presented Noise Detection by Local Variance and Local Central Variance for noise judgement, compared and analyzed the features and performance of existing [5]∼[10] Filters. Filter improved on the result of executing the existing filters at the same condition and showed the effects over that when it was judged with naked eyes. Accordingly, the Adaptive Median Filters by Local Variance and Local Central Variance was proven to have reinforced edge preservation ability and have the strong features for removing the Impulse Noise of the Median Filter.

• Journal of Korean Society of Archives and Records Management
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• v.20 no.1
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• pp.1-25
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• 2020

This study investigated Ulsan locality during Joseon by searching and analyzing various records related to the Ulsan port including old literature, documents, and maps, and oral records relating to traditional knowledge, as well as extracting keywords arranged by the time series and space to reenact Ulsan Port and Ulsan during Joseon. The study examined the characteristics of Yeompo, which served defense and trade functions through Waegwan in the former half of Joseon, Gaewoonpo, Seosaengpo, and Dosanseong, which underwent damage during Imjinwaeran and other wars in middle Joseon, and Bangeojin, which operated state-owned ranches and defense facilities including signal fires through to the latter half of Joseon, Jangsaengpo, which played the role of a whaling zone, and neahwang-naru, iron mine of Dalcheon, trying to reproduce the trajectory of the Ulsan during Joseon. Research on the locality transfiguration process of the port will help establish the locality of the entire Ulsan.

• Journal of the Economic Geographical Society of Korea
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• v.26 no.1
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• pp.23-39
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• 2023

Due to the recent population decrease and urban decline, it has become increasingly important to induce qualitative changes in the city itself and create a differentiated development model. Local culture, based on its uniqueness and diversity, generates the expansion and ripple effect of various contents through creative utilization. In this study, we examine a new local content approach called "town-stay (village hotel)" that develops cultural content and creates a place-making in terms of creating a sustainable ecosystem with cultural vitality. While the uniqueness and creativity of individual content can make a region's attractiveness stand out, we have seen in the case of small-sized cities in Korea and Japan that content elements (place, story, people) can be materialized into area-level content called town-stay(village hotel). The local contents are densely presented in a specific area to increase visibility and expand into a variety of content that reveals regional connections. Local creators, who are the core actors, understand locality, induce active activities, and pursue sustainable development that promotes not only economic value but also community solidarity.

• Journal of Korean Library and Information Science Society
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• v.43 no.2
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• pp.343-364
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• 2012

To examine the locality of Busan is a precondition of examining documenting localities of Busan. What is the locality of Busan and how can I explore the locality of Busan? These are the research questions of this thesis. Memory is fundamental in making an identity. So local memory is fundamental in making locality. Understanding relations between memory and identity, the author explored the locality of Busan by analyzing memories of Busan. To analyze memories of Busan is to examine historical figures of Busan and Cultural Properties of Busan which are on the website of Busan metropolitan city. The results are as follows : According to the analysis of historical figures of Busan, there are no confucius scholars who came from Busan. However in the age of civilization, Busan has produced some talented people by way of receiving a modern education. According to the analysis of Cultural Properties of Busan, Jung-gu(中區) and Seo-gu(西區) and Yeongdo-gu(影島區) are the spaces of migration. Dongnae-gu(東萊區), Suyeong-gu(水營區) and Saha-gu(沙下區) and Gijang-gun(機張郡) are the spaces of settlement. Dong-gu(東區) has changed from a space of settlement into a space of migration with the opening of the Busan Port as a momentum in 1876.

• Journal of the Korean Institute of Landscape Architecture
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• v.37 no.4
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• pp.94-99
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• 2009

The purpose of this study was to utilize hydroculture by the vital means of the improvement of indoor relative humidity. This experiment employed a search of the effect of Scindapsus aureus and Syngonium podophyllum that are generalized for hydroculture foliage plant by a difference of volume ratio, pot media and plants species. In the case of Scindapsus aureus, relative humidity was high for growth chamber in which plants presented as opposed to control growth chambers in which there were no plants. Although relative humidity was 25% in control chamber, there was an increase of 40% at a 2% volume ratio, 45% at a 3% volume ratio and 50% at a 5% volume ratio. The relative humidity of Syngonium podophyllum was 40% at a 2% volume ratio, 44% at a 3% volume ratio and 46% at a 5% volume ratio, while the control treatment was 25% relative humidity in hydroculture. Both the control treatment and hydroball pot in a hydroball container were high at first. As time progressed, artificial soil pots in water containers was similar when housed within the control chamber by about 45% relative humidity. Hydroball pots in water container had about 30% relative humidity. Ardisia pusilla of hydroball poIt in hydroball container had about 38% relative humidity.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.42 no.2
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• pp.523-535
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• 2017

Local intelligent services aim at controlling local services such as cooling or lightening services in a certain local area, using Internet-of-Things (IoT) sensor data in the area. As the IoT paradigm has evolved, local intelligent services have gained increasing attention. However, most of the local intelligent service mechanism proposed so far do not directly take the users' presence and service preference information into account for controlling local services. This study proposes an individual presence-and-preference-based local service system (IPP-LISS). We present a intelligent service control algorithm and implement a prototype system of IPP-LISS. Typically, the intelligence part of IPP-LISS including the prediction models, is generated on remote server in the cloud because of their compute-intense aspect. However, this can cause huge data traffic between IoT devices and servers in the cloud. The emerging mobile edge computing technology will be a promising solution of this challenge of IPP-LISS. In this paper, we implement IPP-LISS in the cloud, and then, based on the implementation result, we discuss applying the mobile edge computing technology to the IPP-LISS application.

• Culinary science and hospitality research
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• v.20 no.4
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• pp.193-209
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• 2014

The purpose of this study is to figure out the effects of consumers' recognition and shopping motives for local food on purchase behaviors. To achieve this, a survey was carried out to 350 consumers who have experienced in purchasing local food in Wanju from May 21 to May 30, 2014. The results were as follows. First, the effects of consumers' recognition for local food on purchase behaviors showed that cognitive, regional, sanitary and public perspectives had a positive effect on repurchase intention(p<.05). Cognitive and sanitary perspectives had a positive effect on recommendation intention(p<.01). And cognitive, ecological, regional, sanitary and public perspectives had a positive effect on preference(p<.05). Second, the effects of consumers' shopping motives for local food on purchase behaviors showed that while convenient and economic motives had a positive effect on repurchase intention(p<.001), a hedonic motive had a negative effect on repurchase intention(p<.001). While convenient and economic motives had a positive effect on recommendation intention(p<.01), a hedonic motive had a negative effect on recommendation intention(p<.001). And convenient and economic motives had a positive effect on preference(p<.001). In other words, consumers' recognition and shopping motives for local food had positive negative effects on purchase behaviors. As stated above, cognitive, regional, sanitary and public perspectives they are usually hearing had a positive effect on the consumption of local food.

• 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.

• Proceedings of the Korean Information Science Society Conference
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• 2002.10e
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• pp.160-162
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• 2002

분산 가상 환경(Distributed Virtual Environment, DVE)시스템의 규모가 커지면서 확장성(scalability)이 중요한 이슈가 되고 있다. 시스템의 확장성을 높이기 위해 제안된 다중 서버 DVE 시스템에서 사용자들의 집단적인 움직임 특성은 서버간 작업부하의 불균형을 초래한다. 이는 전체 시스템의 효용을 떨어뜨리고 다중 서버의 효과를 감소시킨다. 결과적으로 시스템의 확장성이 저하된다. 이러한 문제를 해결하기 위해 기존에 제안된 로드 밸런싱 기법은 크게 로컬 기법과 글로벌 기법으로 구분할 수 있다. 로컬 기법은 적은 비용을 갖지만 작업부하의 분포가 한쪽으로 치우쳐 있을 경우 성능이 낮다. 글로벌 기법은 좋은 성능을 보여주는 반면, 서버의 수가 증가하면 비용이 크게 증가한다. 본 논문은 서버들의 작업부하분포에 동적으로 적응(adaptation)하는, 대규모 다중 서버 DVE 시스템을 위한 확장성 있는 로드 밸런싱 기법을 제안한다. 제안하는 기법에서 과부하된 서버는 그 주변 서버들의 작업부하가 적을 경우 로컬 확산 (Local Diffusion) 로드 밸런싱을 수행하고, 그렇지 않을 경우 제한적 글로벌 (Limited Scope Global)로드 밸런싱을 수행한다. 시뮬레이션 결과를 통해 제안하는 기법이 효율(efficiency)의 측면에서 기존의 로컬 기법과 글로벌 기법보다 각각 14%, 3%가 우수함을 보인다. 또한, 제안하는 기법은 서버의 수가 증가함에 따라 효율이 감소하는 추세가 기존 기법들보다 완만함을 보인다.

• The Journal of the Korea Contents Association
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• v.8 no.4
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• pp.155-163
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• 2008

This study is to examine the cooperation plan of participating bodies in the area on social welfare system that is appropriate in the localization era. In order words, in order to develop the local social welfare system by approaching on the cooperation within the participating bodies within the area in the local governance level, the purpose of this study is to find out the problems that the existing local community welfare system has, and seek the responsive development cooperation plan. Furthermore, through this study, it is expected to present desirable cooperation model of local social welfare, and the reasonable welfare plan on the locality would be available.