• Title/Summary/Keyword: 외래전파

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Studies on the trend for Monitoring of International Radio Waves in Korea (우리나라의 국제전파감시 동향 연구)

  • 강민수;육정수;이상욱;김현덕;박연식
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.10a
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    • pp.532-536
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    • 2003
  • 최근 들어 급속한 전파 이용 기술의 발전과 인터넷, PC 보급률의 증가 등의 요인으로 인하여 전파이용량이 증가되는 등 전파의 수요가 급증하고 있으며 이로인한 인접국가간의 전파간섭사례가 증가하고 있다. 이에 대하여 이 연구에서는 우리나라의 국제전파감시체제를 분석하여 3가지의 개선방안을 제시하였다.

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Technical Treatment of Oceanic Living-things in Ship's Ballast-water by Hydroxyl Radical of Electrical Plasma (강 전리 플라즈마 수산기에 의한 선박안정수 해양외래생물의 처리 방안)

  • 소대화;장지도;선우택
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2003.10a
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    • pp.356-359
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    • 2003
  • 선박이 배출하는 안정수(ballast water)는 외부로부터 유해 생물들이 유입되어 전파해 오는 주요경로로써, 해양환경 변화를 초래하는 매우 중요하고 위험한 일중의 하나이다. 그러나 이에 대한 효과적인 처리방법은 아직까지도 미흡한 상태이다. 선박 안정수에 포함되어 타 지역으로부터 옮겨지는 외래침입생물 처리 방안의 하나로, 강 전리방전 기술을 적용하여 고 밀집 산소와 물분자로부터 고농도 수산자유기(OH: hydroxyl radical)를 전리, 발생시켜서 활성입자를 신속히 확산시켜 비교적 낮은 수산기농도 하에서 유해성침입생물을 소멸 처리하는 환경 친화적 녹색 청정처리방법을 제안하였다. 제안된 기술은 대상물의 처리 후 부수적으로 발생할 수 있는 처리잔류물이 전혀 발생하지 않으며, 인공적 화학성분의 약제를 사용하지 않는 저렴한 처리방법이므로 대ㆍ소형 원양선박의 안정수에 들어있는 외래침입생물의 타 지역 해양확산을 안전하게 처리할 수 있는 자연치유적 신기술이다.

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A study on the distribution of organic compounds, nitrogen, phosphorus and heavy metal in Ballast Water (밸러스트수내 유기물, 영양염류 및 중금속 농도 분포에 관한 연구)

  • Cheong, Kwang-Hyun;Ahn, Jong-Gil
    • Proceedings of KOSOMES biannual meeting
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    • 2006.05a
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    • pp.71-77
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    • 2006
  • There is a growing concern about the damage to aquatic ecosystem caused by immigration of non-indigenous species. It is estimated that more than 10,000 million tons of ballast water is transported by shipping activities annually, and ballast water has been recognised as a major vector for the transplant of aquatic species across bio-geographical boundaries. The problem of harmful aquatic organism in ballast water for the control and management of ships' ballast water and sediments was adopted and diplomatic conference of IMO at February 2004. At once ballast water is transported by shipping activities for organic compounds, nitrogen, phosphorus and heavy metal etc. but, It's fixing a focus only for the transported of pathogenic bacteria and non-indigenous species. Hence, this studies on the distribution of organic compounds, nitrogen, phosphorus and heavy metal in ballast water during the shipping activity with the basic data which is necessary to the systemic manage of ballast water.

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Extermination and Destruction Treatment of Oceanic Foreign-invading Living-things in Ship Ballast-water by Hydroxyl Radical (선박 안정수의 해양외래침입생물 사멸 처리)

  • Soh, Dea-Wha;Jeong, Jo-Young;Xianyu, Ze
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2003.07b
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    • pp.1235-1240
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    • 2003
  • 선박이 배출하는 안정수(ballast water)는 외부로부터 유해 생물들이 유입되어 전파해 오는 주요경로로써, 해양환경 변화를 초래하는 매우 중요하고 위험한 일중의 하나이다. 그러나 이에 대한 효과적인 처리방법은 아직까지도 미흡한 상태이다. 선박 안정수에 포함되어 타지역으로부터 옮겨지는 외래침입생물 처리방안의 하나로, 강 전리방전 기술을 적용하여 고 밀집 산소와 물분자로부터 고농도 수산자유기(OH: hydroxyl radical)를 전리, 발생시켜서 활성입자를 신속히 확산시켜 비교적 낮은 수산기농도하에서 유해성 침입생물을 소멸 처리하는 환경 친화적 녹색 청정처리방법을 제안하였다. 제안된 기술은 대상물의 처리 후 부수적으로 발생할 수 있는 처리잔류물이 전혀 발생하지 않으며, 화학 약제를 사용하지 않는 저렴한 처리방법으로 선박안정수의 침입생물을 안전하게 처리할 수 있는 자연치유적 신기술이다.

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A Recovery Scheme of Mobile Transaction Based on Updates Propagation for Updating Spatial Data (공간데이터를 변경하는 모바일 트랜잭션의 변경 전파 회복 기법)

  • Kim, Dong-Hyun;Kang, Ju-Ho;Hong, Bong-Hee
    • Journal of Korea Spatial Information System Society
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    • v.5 no.2 s.10
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    • pp.69-82
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    • 2003
  • Mobile transactions updating spatial objects are long transactions that update local objects of mobile clients during disconnection. Since a recovered transaction cannot read the write sets of other transactions committed before the recovery due to disconnection, the recovered transaction may conflicts with them. However, aborting of the recovered long transaction leads to the cancellation of all updates including the recovered updates. It is definitely unsuitable to cancel the recovered updates due to the conflicts. In this paper, we propose the recovery scheme to retrieve foreign conflictive objects from the write sets of other transactions for reducing aborting of a recovered transaction. The foreign conflictive objects are part of the data committed by other transactions and may conflict with the objects updated by the recovered transaction. In the scheme, since the recovered transaction can read both the foreign conflictive objects and the recently checkpoint read set, it is possible to reupdate properly the potentially conflicted objects.

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The Invasive Alien Plants and Management Plans of Traditional Temples in Gyeongju - Focused on Bunhwangsa Temple, Baekryulsa Temple and Sambulsa Temple - (경주 전통사찰의 침입외래식물 현황 및 관리방안 - 분황사, 백률사, 삼불사를 중심으로 -)

  • You, Ju-Han
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.40 no.2
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    • pp.44-58
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    • 2022
  • Bunhwangsa Temple, Baekryulsa Temple and Sambulsa Temple are not famous cultural heritage area, but they are visited by many tourists and are located in Gyeongju National Park and Gyeongju Historic Areas, so environmental and cultural preservations are required. The purpose of this study is to manage the unique environment and landscape of cultural assets by analysing the invasive alien plant of traditional temple of Gyeongju. The whole flora were summarized as 188 taxa including 73 families, 136 genera, 154 species, 3 subspecies, 11 varieties, 4 forms, 5 hybrids and 12 cultivars., and the landscape plants were 163 taxa and 38 taxa of the invasive alien plants. The 13 taxa of invasive alien plants were planted in three temples. The ecosystem disturbance species were 3 taxa including Rumex acetosella, Lactuca seriola and Symphyotrichum pilosum. Invasive alien plants have artificial causes such as landscape planting, but there are also those that are introduced naturally from outside. The parking lot of the temple is expected to be a major propagation path for invasive alien plants due to the large amount of interference and disturbance. Based on the results of this study, the management plans are suggested as follows. First, it is necessary to use native species suitable for the natural environment and traditional landscape of Korea for landscape planting of traditional temples, and development of planting guidelines centered on cultural properties is required. Second, it is necessary to refrain from planting invasive alien plants because traditional temples are located in an important environment and historically. Third, for the preservation of the temple environment, it is necessary to promptly remove the ecosystem disturbance species. Fourth, in order to express the landscape characteristics of traditional temples, a unique planting plan should be established in consideration of the location environment and historicity.

The Methodology of 'Woori Philosophy': an Analysis of this Philosophical Thought Contained in the Jeon-gyeong (『전경』의 사상분석으로 살펴본 '우리철학'의 방법론)

  • Lee, Jong-lan
    • Journal of the Daesoon Academy of Sciences
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    • v.30
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    • pp.201-234
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    • 2018
  • 'Woori Philosophy' is the modern philosophy of Korea. The purpose of this study is to make a hypothetical model of the methodologies used in Woori Philosophy, to analyze and classify this system of thought as it appears in the Jeon-gyeong (『典經』), to confirm the effectiveness of the model's application, and to present the model's methodological best practices. In this paper, I have made a standard for Woori Philosophy by combining existing studies. Thereby, although it is preliminary, I have presented the model as a way of achieving Woori philosophy by analysis and division of this thought in the Jeon-gyeong. As a result, the Jeongyeong's content is organized into an order in frequency which emerges as Model②, Model①, Essential Model, Model④, and Model③. These models can be evaluated to show that the Jeon-gyeong progressively inherited different schools of traditional Korean thought, while simultaneously characterizing them as Korean in many areas, never ignored the problems of the times or an awareness of the world, and furthermore, did not senselessly or blindly accept foreign objects spread into Korea from 1880~1890. Therefore, the Jeon-gyeong shows a comprehensive methodology for the implementation of Woori philosophy based on its own historical setting. It can be evaluated as the best practices which took many ideas and made those ideas its own. Through this, I was able to confirm its effectiveness as a methodology of Woori Philosophy and was able to extract its best practices. However, the ideas in the Jeon-gyeong did not directly become Woori Philosophy. To solve our problems in the 21st century, there is still an assignment to interpret these ideas through the application of this model. If the existing research on Daesoon Thought (大巡思想) is to become Woori Philosophy, then it should do so through the application of this model.

A Study on Costume Culture Interchange Resulting from Political Factors (정치적 요인에 의한 복식문화교류에 관한 연구)

  • Yu Ju-Ri;Kim Jeong-Mee
    • Journal of the Korean Society of Clothing and Textiles
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    • v.30 no.3 s.151
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    • pp.458-469
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    • 2006
  • The purpose of this study was to prove that interchange is a primary factor in costume changes through case analysis in costume culture interchange, and further, to assist in gaining understanding of costume changes of the present and the future, and therefore, in this study, cases analysis was conducted focusing on interchange resulting from political factors. In order to present theories that are able to analyse costume culture interchange, culture, cultural exchange, and costume cultures were examined, and based on the results, a costume culture interchange process model and its three steps, propagation, selection, and reinterpretation, were presented. The results of case study on costume culture interchange resulting from political factors based on the costume culture interchange process model presented are as follows. Interchanges that politically uses the possibility of expressing costume as symbols are in most cases aggressive and semi aggressive. In order to exhibit superiority of themselves, the aggressors forced their national costumes onto the receiving culture. Rather than a simple introduction of their costumes, it was an attempt to introduce they values and their ways of life. The conclusion that can be reached through such result is that interchange is an important driving force for changes in costume culture. All interchanges were not greatly affected by methods of propagation and acceptance, and resulted in fusion. Fusion is a process in which existing costume and foreign costume come together constructively to for a new costume culture therefore change in costume style is inevitable.

Clinical Characteristics and Use of Psychotropic Agents among HIV-Infected/AIDS Patients Referred for Psychiatric Consultation (일 병원 정신건강의학과로 자문의뢰 된 HIV 감염/후천성면역결핍증 환자의 임상적 특성과 향정신약물 사용)

  • Shin, Sang-Ho;Kim, Hyun-Chung;Yoo, So-Young;Shin, Hyoung Shik;Won, Sung-Doo;Lee, So Hee
    • Korean Journal of Psychosomatic Medicine
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    • v.22 no.1
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    • pp.31-39
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    • 2014
  • Objectives : This study aimed to investigate the psychiatric status of HIV-infected/AIDS inpatients in a general hospital over the past 2.5 years. Methods : A retrospective chart review was conducted of psychiatric consultations performed between January 1, 2011, and July 30, 2013. The records of 97 HIV-infected/AIDS patients were analyzed. These included a total of 282 psychiatric consultations. Results : Of the 97 patients, 91(93.8%) were male, the mean age was 48 years, and mean number of consultations was 2.8. Depressed mood was reported in 102 consultations(23.8%), insomnia in 60(14.0%), and anxiety in 31(7.2%). Psychiatric disorders diagnosed on initial consultation included depressive disorder(37 patients ; 37.0%), cognitive disorder(11 ; 11.0%), and delirium(9 ; 9.0%). Recommended psychotropic medication included Lorazepam(99 ; 17.2%), Escitalopram(90 ; 15.7%), and Quetiapine(84 ; 14.6%). Conclusions : The main complaints of HIV-infected/AIDS patients were depressed mood, insomnia, and suicidal ideation(including suicide attempts). In total, 85(93.3%) patients of those consulted were diagnosed as meeting the criteria for a psychiatric condition. However, considering that only 16.9% of patients consulted received follow-up treatment, longitudinal research is needed to examine the influence of psychiatric disorders on the transmission of HIV-infection/AIDS, as well as on prognosis and treatment adherence.

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Report on Settlement of Alien Species Red Swamp Crawfish (Procambarus clarkii) in Korea (외래생물 미국가재(Procambarus clarkii)의 국내 자연생태계 정착 보고)

  • Kim, SuHwan;Baek, Hae-Jun;Yang, Geun Bok
    • Korean Journal of Ecology and Environment
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    • v.52 no.4
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    • pp.333-339
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    • 2019
  • The Red swamp crawfish Procambarus clarkii is native to the southern United States and inhibits all over the world including the United States, Asia, Africa and Europe. In Europe, it is known to disrupt ecosystems such as competition with native crayfish. In this study, habitats of red swamp crawfish were identified in Jiseok stream (15.5 km section) and Daecho stream (6.1 km section) of Youngsan river. A total 33 red swamp crawfish were captured. A female captured in Jiseok stream carried 215 newly hatched red swamp crawfish in her the burrow. As a result of the analysis of the habitat environment, the water temperature was ranged of 2.4~32.8℃, conductivity was 53.4~502.3 μS cm-1 and DO was 0.74~22.64 mg L-1. As a result of measuring HOBO, the temperature ranged from -9~48.1℃, showing a change of 57.1℃ throughout the year. The variation of the water temperature throughout the year from 2.9~33.9℃ was found to be 31℃. Red swamp crawfish have a high adaptability and a wide range of environmental resistance, and report a sharp increase in newly invaded areas, negatively affecting indigenous organisms. In addition, it can be used as a medium for the spread of diseases and parasites, so prompt investigation and research should be carried out.