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        검색결과 33

        3.
        2019.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The phenomenon of incomplete correspondence between writing and language units is widespread in the Dongba Scripture The White Bat’s Search for Sacred Books. This paper makes a comprehensive analysis and investigation of the incomplete correspondence in the Scripture, and then summarizes several common types and gives examples. This paper hopes to provide a reference for scholars to understand Chinese characters and other mature hieroglyphs in the early stage.
        5,200원
        8.
        2017.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Using the InfraRed Camera (IRC) on board the infrared astronomical satellite AKARI we study the 3.3 μm polycyclic aromatic hydrocarbon (PAH) feature and its connection to active galactic nucleus (AGN) properties for a sample of 54 hard X-ray selected bright AGN, including both Seyfert 1 and Seyfert 2 type objects. The sample is selected from the 9-month Swift/BAT survey in the 14-195 keV band and all of the sources have known neutral hydrogen column densities (NH). The 3.3 μm PAH luminosity (L3:3μm) is used as a proxy for star-formation (SF) activity and hard X-ray luminosity (L14-195keV) as an indicator of the AGN power. We explore for possible di erence of SF activity between type 1 (un-absorbed) and type 2 (absorbed) AGN. We use several statistical analyses taking the upper-limits of the PAH lines into account utilizing survival analysis methods. The results of our log(L14-195keV) versus log(L3:3μm) regression shows a positive correlation and the slope for the type 1/unobscured AGN is steeper than that of type 2/obscured AGN at a 3σ level. Also our analysis shows that the circum-nuclear SF is more enhanced in type 2/absorbed AGN than type 1/un-absorbed AGN for low L14-195keV luminosity/low Eddington ratio AGN, while there is no significant dependence of SF activity on the AGN type in the high L14-195keV luminosities/Eddington ratios.
        3,000원
        10.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        문둥이박쥐(Eptesicus serotinus)의 생후 발성발달 특징을 파악하기 위하여 임신한 암컷 3개체로부터 총 4개체의 새끼 박쥐를 확보하여 발성변화를 분석하였다. 녹음 및 분석은 생후 1일부터 40일까지 수행하였으며, 펄스 지속시간 (PD), 펄스 간격(PI), 최고 주파수(PF), 시작 주파수(FMAX), 종료 주파수(FMIN), 대역폭(BW)에 대하여 측정하였다. 새끼 박쥐는 생후 초기에 가장 다양한 패턴의 음성을 발산하였으며, 연령이 증가함에 따라서 점차 어미와 유사해졌다. PD와 PI는 연령이 증가할수록 감소하였으며, 반면 PF, FMAX, FMIN, BW는 증가하였다. PF, FMAX, FMIN, BW는 생후 10일에서 20일 사이에 가장 큰 변화가 확인되었으며, PD는 생후 30일에서 40일 사이에 가장 큰 변화가 확인되었다. 따라서 진동수의 발성과 관련이 있는 발성근육의 수축 능력은 생후 20일경 가장 발달하게 되며, 발성시간과 관련된 발성근육의 이완 능력은 생후 30일에서 40일 사이에 가장 발달하는 것으로 판단된다. 본 연구에 이용된 새끼 개체들은 생후 40일차에도 비행이 확인되지 않았으나 발성음은 어미와 유사하게 나타났다. 따라서 이러한 결과는 새끼 박쥐의 발성 발달은 비행행동 또는 비행과 관련된 근육의 발달을 필수적으로 동반하는 것은 아니라는 것을 보여주는 결과라 판단된다.
        4,000원
        11.
        2015.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to investigate the bat (Chiroptera) fauna in Jeju Island. Bat distribution was monitored in lava tubes, sea caves, cave encampments and eco-corridors from July, 2006 to June, 2015. Bat specimens were also confirmed at the museums in Jeju Island. From the present study, we found 8 species of 6 genera belong to 3 families, which was different from the records had previously described in Jeju Island since 1928. Five species (Rhinolophus ferrumequium, Myotis bombinus, M. formosus, M. macrodactylus and Miniopterus schreibersi) were commonly found to live in lava tubes and cave enforcements. But only R. ferrumequium was found in a sea cave and five species including Murina leucogaster and Pipistrellus abramus were found in eco-corridors. We have also found seven species including Tadarida insignis in the specimens stored in local museums. From the results of this study, we actually could not found the remaining seven species (Hypsugo savii, Miniopterus fuscus, Myotis mystacinus, Myotis ikonnikovi, Myotis branditii, Myotis petax and Pipistrellus endoi). Interestingly, Myotis formosus which is known as one of endangered species and Myotis bombinus which is very rare in Korean Peninsula were currently found in Jeju Island. In addition, Tube-nosed bat (Murina leucogaster) that was discovered for the first time through this study. A variety of habitats for Chiroptera were identified, but the information is still not sufficient to understand. These results will be useful to provide a fundamental data in preserving the diversity of bats and in ecological study in Jeju Island.
        4,000원
        12.
        2015.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        문둥이박쥐(Eptesicus serotinus)의 먹이원 구성을 파악하기 위하여 총 25개체의 암컷 성체로부터 배설물을 수집하여 분석하였다. 박쥐의 포획은 경북 안동시의 문둥이박쥐 집단 서식지가 확인된 교량을 대상으로 하였으며, 2014년 5월부터 9월까지 매월 5개체를 대상으로 하였다. 총 100개의 배설물이 수집되었으며, 고배율 현미경(50 × binocular microscope)을 이용하여 곤충의 목(Order)별로 구기(mouthpart), 다리(leg), 날개(wing), 더듬이(antenna), 딱지날개(elytra) 등 구분할 수 있는 특징을 이용하여 동정하였다. 배설물 분석결과 문둥이박쥐의 먹이원으로 이용된 분류군은 딱정벌레목(Coleoptera), 벌목(Hymenoptera), 파리목(Diptera), 노린재목(Hemiptera) 등 4개였다. 먹이원 가운데 딱정벌레목은 6월을 제외하고 5, 7, 8, 9월 모두에서 확인되었으며, 특히 5월과 7월에는 오직 딱정벌레목만 확인되었다. 그 외 노린재목, 파리목, 벌목은 각각 9월, 6월, 8월에 먹이원으로 이용되는 것으로 나타났다.
        4,000원
        13.
        2012.09 KCI 등재 구독 인증기관·개인회원 무료
        We combine data from two all-sky surveys, the Swift/Burst Alert Telescope 22 Month Source Catalog and the AKARI Point Source Catalogue, in order to study the connection between the hard X-ray (> 10 keV) and infrared (IR) properties of local active galactic nuclei (AGN). We find two photometric diagnostics are useful for source classification: one is the X-ray luminosity vs. IR color diagram, in which type 1 radio-loud AGN are well isolated from other AGN. The second one uses the X-ray vs. IR color-color diagram as a redshift-independent indicator for identifying Compton-thick (CT) AGN. Importantly, CT AGN and starburst galaxies in composite systems can also be separated in this plane based upon their hard X-ray fluxes and dust temperatures. This diagram may be useful as a new indicator to classify objects in new surveys such as with WISE and NuSTAR.
        14.
        2010.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 집박쥐의 비번식기 행동권을 분석하기 위하여 경상북도 경주시의 집박쥐 주간 휴식장소를 대상으로 수행하였다. 박쥐의 포획은 새끼의 출산이 이루어지기 이전인 2009년 5월 4, 10, 18일에 하였으며, 암, 수 각각 3개체씩 총 6개체를 이용하였다. 행동권 분석을 위한 원격무선추적은 발신기(LTM Single Stage Radio Transmitter, 0.38g), 수신기(R2000 ATS receiver, Advanced Telemetry Systems, Inc., Isanti, MN), Yagi 안테나(Three element Yagi antenna) 및 차량용 안테나(Roof mounted antenna)를 이용하였으며, 분석에는 ArcGIS 3.3 (ESRI Inc.) Animal Movement Extension 2.0을 이용하였다. 집박쥐의 행동권 분석결과 평균 행동권은 14.46±3.44ha로 조사되었으며, 암컷은 16.83±1.96ha 그리고 수컷은 12.08±2.96ha의 행동권을 가지는 것으로 나타났다. 본 연구에서는 암컷과 수컷의 행동권에서 평균적으로 암컷이 더 큰 행동권을 보이는 결과를 나타내었으나, 통계적으로 유의적인 차이는 확인되지 않았다(t=2.32, p〉0.05). 또한 각각의 위치정보를 기준으로 주간 휴식지에서의 최대 이동 거리는 평균 468.73±94.38m 로 나타났으며, 암컷(422.73±10.38m)과 수컷(514.74±125.74m)간의 유의적인 차이는 나타나지 않았다(t=-1.26, p〉0.05).
        4,000원
        17.
        2020.05 KCI 등재 서비스 종료(열람 제한)
        The purpose of this study analyzed the overview of corrugated cardboasrd manufacturing industry and then provide direction for improvement. The BREF (BAT reference document) is an important reference for licensees and officer, including the best available techniques for the industry and achievable environmental performance, technical characteristics, and economic information. In the corrugated cardboard manufacturing process, wastewater pollutants are generated throughout the production process, and water is used in the dissociation and aging process. Atmospheric emissions are mostly generated by steam production from boilers and incinerators for the dry process. SO2, NOx, CO2, CO, HCl, dust, VOC, and odor were common. In the EU-BREF (European union BAT reference documents) BAT for wastewater have taken up a relatively large proportion. Items of water pollutants in wastewater were common in COD, BOD, N, P, SS, and however EU-BREF had different pollutants such as AOX and salt compared to K-BREF. In order to improve the quality of the K-BREF, it is necessary to devise basic data research method and data acqusitiom method. Consideration should be given to additional environmental management techniques that reflect the emissions characteristics of the corrugated cardboard manufacturing process. In addition, further research is needed to develop methodologies for selecting BATs considering environmental and economic feasibility.
        18.
        2019.04 KCI 등재 서비스 종료(열람 제한)
        BAT-AEL(Best Available Techniques Associate Emission Level) is the basis for establishing permissible emission standards for the workplace. Therefore, it is necessary to formulate a regulated BAT-AEL setting methodology that is generally applicable to all relevant industries. For the BAT-AEL settings, various factors should be considered such as the pollutants item, whether the workplace is subject to integrated pollution prevention and control, whether BAT is applicable, the basic data type, the emission classification system, and the suitability of the collected data. Among these factors, it is the most important factor to establish the classification system for the emitting facilities such that the emission characteristics of an industrial facility and its pollutants can be effectively reflected. Furthermore the target of the survey workplace should adhere to the BAT guidelines, even if it is a workplace that is subject to an the integrated environmental system. Certified data (SEMS, TMS, cleanSYS, WEMS, etc.) can be used to prioritize the classification system for the emission facility and the emission levels of pollutants. However, the self-measured data, daily logs, and questionnaire data from the workplace can also be used upon agreement of the relevant TWG. The collected data should only be used only when the facility is operating normally. Data that have been determined to be outliers or inappropriate validation methods should also be excluded. The BAT-AEL can be establish by adhering to the following procedure: 1) investigate all relevant workplaces with in the industry, 2)select workplaces for integrated management, 3)Identify BAT application, 4)identify whether BAT is generally applicable, 5)establish a classification system for emitting facilities, 6)collection available data, 7)verify conformity, 8)remove of outliers, 9)prepare the BAT-AEL draft, 10)deliberate, and 11) perform the confirmation procedure.
        19.
        2019.01 KCI 등재 서비스 종료(열람 제한)
        In order to collect base line data for setting up bat boxes, we established a total of 30 bat boxes in 2017. The bat boxes were established on the sidewalls of overpass and on the inside of girder bridges. Since establishing bat boxes, we regularly confirmed whether or not they were used; in June 2018, we confirmed that a total of six bat boxes were being used by Pipistrellus abramus and Myotis aurascens. It was confirmed that P. abramus used one bat box each out of five bat boxes, and that many adult females of M. aurascens used a single bat box as a place for maternity roosts. This result is the first use case for setting up bat boxes across the country, and could be used as baseline data to build roosts for bats by setting up additional bat boxes in the future.
        20.
        2018.08 KCI 등재 서비스 종료(열람 제한)
        The purpose of this study was to identify the characteristics of the home range and habitat use of Rhinolophus ferrumequinum individuals that inhabit urban areas. The bats were tracked using GPS tags. For analysis of the home rage, Minimum Convex Polygon (MCP) and Kernel Home Range (KHR) methods were used. The landscape types of all positional information were analyzed using ArcGIS 9.3.1 (ESRI Inc.). The average home range of 16 R. ferrumequinum individuals was 68.63 ± 25.23 ha, and the size of the overall home range for the females (85.49 ± 25.40 ha) was larger than that for the males (51.76 ± 8.30 ha). The highest average home range for the males was found in August (61.21 ± 0.01 ha), whereas that for the females was found in September (112.27 ± 5.94 ha). The size of 50% KHR ranged from a minimum of 13.26 ha to a maximum of 31.00 for the males and a minimum of 8.02 ha to a maxinum of 42.16 ha for the females, showing no significant differences between the two sexes. In addition, males and females showed no differences in the size of 50% KHR in the monthly comparisons. However, the females showed differences in the size of their core area between periods before and after giving birth. The comparisons between 100% MCP and 50% KHR showed that the types of habitats used by R. ferrumequinum were mostly forest areas, including some farmlands. In addition, comparisons with a land cover map showed that the proportion of broad-leaved forests was the highest, followed by that of mixed forests.
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