This study aimed to analyze the profitability and economic feasibility of hairtail trolling line gear that was developed for the last 3 years (2015-2017). The new fishing gear technology development was accomplished to solve the current problem of fishermen shortage in hairtail targeting fisheries in Jeju region. Results indicated that the profitability of developed hairtail trolling line fishery was estimated to be 36.1 % which would be higher than that of other hairtail targeting fisheries in Jeju region. In addition, as an economic feasibility, the net present value and the internal rate of return of a 20-year cash inflow and outflow were evaluated to be 400.2 million won and 66.9 %, respectively. However, sensitivity analyses of main variables showed that the profitability and economic feasibility would be vulnerable to catch amount and market condition changes.

Occurrence spontaneous mushrooms in eastern Jeju Muryeongarioreum, Sillyecheon-Iseungak, Kyoraegotjawal, Geomunoreum were examined in 2016. The collected mushrooms were classified by 15 order 56 family 149 genera 317 species. Among the collected mushrooms, 87 species of mushrooms were successfully incubated in mushroom complete medium in which DNA of 25 species were completely extracted and amplified using universal primers ITS1 (5’-CTTG GTCA TTTA GAGG AAGT AA-3’) and ITS4 (5’-TCCT CCGC TTAT TGAT ATGC-3’). Four species of them were differently identified between the classification by morphological observation and by analysis of DNA sequences i.e. by morphological identification Ganoderma applanatum, Armillaria gallica, Macrolepiota procera and Trametes gibbosa were identified as G. gibbosum, A. cepistipes, M. detersa and T. elegans by analysis of DNA sequences, respectively. Based on these results both identification ways might be necessary for correct classification of mushrooms. On the other hand, among the collected 317 mushrooms, 48 species could be identified to genus but not to species by the morphological observations. However, by the analysis of DNA sequences, 15 species were identified to species in which 6 species were unregistered mushrooms in Korea. Therefore, the analysis of DNA sequence may be useful to identify the mushrooms which are difficult to recognize by morphological observation.

본 연구는 오차드그라스와 톨 페스큐 혼파초지에서 비축 시기별(8월 1일, 15일, 30일) 으로 처리하여 11월 중순경(11.10∼11.12)에 수확할 때 목초의 비축시기에 따른 생산량과 목초의 사료 가치 등을 비교하기 위해 수행하였다. 목초 비축시기에 따른 오차드그라스와 톨 페스큐 혼파초지(동량 혼파초지)의 건물수량은 8월하순구가 2,983.0kg/ha으로 가장 높은 경향을 보였다. 목초의 비축시기가 늦어짐에 따라 목초의 생산량도 증가하였으나 유의성이 인정되지는 않았다. 조사료의 조단백질은 16.5∼18.16%으로 목초 비축시기별로 일정한 경향을 나타내지 않았다. NDF와 TDN는 비축시기가 늦을수록 증가하는 경향을 나타내었으나 유의성이 인정되지는 않았다. 반면에 ADF 비율은 목초 비축시기가 감소함에 따라 점차 감소하는 것으로 나타내었으나 유의성이 인정되지는 않았다. 무기물의 변화는 비축 기간이 증가할수록 P, Ca, Mg, Na, Zn이 증가하였고 반면에 Mn, Cu는 감소하는 경향을 나타내었다. 결과적으로 8월 초순부터 초지를 비축할 경우 고온으로 인한 생육 위축으로 목초의 수량증가는 기대하기 어렵다. 따라서 제주도에서 가을철에 활용하기 위한 초지를 비축할 경우에는 8월 하순 이후에 시작하는 것이 바람직할 것으로 사료된다.

이 연구의 목적은 현무암과 화성암과 같은 화성암을 관찰할 때 화성암 지역에 살고 있는 학생들과 그렇지 않은 학생들 사이의 특징을 비교하기 위한 것이다. 연구를 위해 제주도에 살고 있는 5학년 학생 68명, 울릉도에 살고 있는 5학년 학생 28명, 그리고 화산지역과 직접적 관련이 없는 지역의 5학년 학생 61명을 선정하였다. 이 연구는 다음과 같이 진행되었다. 현무암과 화성암을 관찰하게 한 후 학생들은 관찰한 사실을 모두 적었다. 그리고 관찰이 끝난 후 관찰이외에 현무암과 화성에 대해 알고 있는 사실 모두를 적도록 하였다. 연구를 통해 알게 된 사실은 다음과 같다. 첫째, 화성암 관찰에 있어서 학생들은 지역적 특성 변인에 의한 유의미한 통계적 차이는 보이지 않았다. 둘째, 화성암과 관련하여 학생들이 관찰 이외에 알고 있는 지식의 양 또한 지역적 특성과 관련되어 유의미한 차이를 보이지 않았다. 셋째, 화성암에 대해 관찰 사실 이외에 알고 있는 지식을 질적으로 분석한 결과, 많은 학생들은 화성암의 근원물질이나 생성과정에 대해 알고 있었으나 지역적인 특성을 고려한 진술은 많이 나오지 않았다. 이러한 연구 결과를 통해 우리는 학교에서 이루어지는 과학 수업이 현상을 탐구하는 것뿐만 아니라 현상과 관련된 여러 가지 구체적인 사례들과 함께 이루어져야 한다는 것을 알 수 있다.

In this study, the symbols and visual expressions employed in the food culture content of official website designed to promote three cities in Korea, Seoul, Jeonju and Jeju, were subjected to semiotic analysis. In this study, it was assumed that these websites reflected the varying perspectives of the people behind the development and management of these routes of Internet communication, and the semiotic choices made in order to exemplify each city’s food cultural image. The aim of the study was to analyze the communication strategies of food cultural branding in the terms of the online content regarding Seoul, Jeonju, and Jeju with a focus on the comparative points in these cities’ official websites. This study included conducting semiotic content analyses of the aforementioned cities’ official web pages in an attempt to determine the food branding strategies used to differentiation and produce more favorable perceptions of these three cities. Building upon the findings drawn from this comparative study, the present work can be used to determine more effective ways of strategically differentiating the images of local food culture associated with these cities from the view of brand communications. This study also demonstrates viable directions for designing web content for a city where the food cultural messages can be delivered in a thoughtful and effective manner.

사료용으로 적합한 우량품종을 선발하기 위하여 콩의 18개 장려품종을 5월 11일에 30x 20cm 거리로 파종하여 생육수량성 및 조성분 등을 조사한 결과를 하면 다음과 같다. 개화까지의 일수는 석량콩, 큰올콩 및 화엄콩이 58일로 짧은 편이었고, 단파흑두는 93일로 가장 늦었다. 그외 다른 품종이 개화까지 일수는 65∼69일이었다. 경장은 푸른콩, 남해콩이 각각 129.3, 124.6cm로 가장 길었고 큰올콩, 화엄콩 및 석량콩은 63.9∼66.9cm로

본 시험은 제주피의 적정 파종량을 구명하기 위하여 2000년 4월 16일에 ha당 15, 20, 25, 30, 35, 40kg에 해당하는 량을 조파하여 2000년 6월 28일(1차 예취)과 8월 30일(2차 예취)에 생육특성, 사초수량, 사료성분 등을 조사하였다. 초장은 15kg/ha 파종구에서 155.5cm였던 것이 파종량이 35kg/ha으로 증가함에 따라 162cm로 커졌으나, 그 이상 파종량을 증가할수록 작아져서 40kg/ha 파종구에서는 152.

In order to identify the growth characterization, the yield and chemical composition of Jeju barnyard grass (Echinochloa crusgalli var. fiurnentacea(Roxb) Wight) based on seeding date in Jeju region, seeding carried out the 10-day intervals from March 27

The assessment of wind resources must be carried out to choose wind farm sites adequately. Additionally, input data on surface roughness maps and topographic maps are required to evaluate wind resources, where input data accuracy determines the accuracy of their overall analysis. To estimate this accuracy, we used met-mast data in Jeju and produced the ground roughness value for the Jeju region. To determine these values, an unsupervised classification method using SPOT-5 images was carried out for image classification. The wind resources of the northeastern part of Jeju were predicted, and the ground roughness map of the region was calculated by the WindPRO software. The wind speed of the Pyeongdae region of Jeju from the ground roughness map was calculated using WindPRO as 8.51 m/s. The wind speed calculated using the remote sensing technology presented in this study was 8.69 m/s. To assess the accuracy of the measured WindPro and the remote sensing technology values, we compared these results to the observed values in the Pyeongdae region using met-mast. This comparison shows that remote sensing data are more accurate than the WindPro data. We also found that the ground roughness map calculated in this study is useful for generating an accurate wind resource map of Jeju Island.

The 12 cultivars of the Jeju native Citrus are considered to have originated from China. However, the origin of the cultivar ‘Byungkyool’ (Citrus platymamma Hort. ex Tanaka) is not clearly known. We performed PCR analysis by using three primer sets designed from the internal transcribed spacer (ITS) region of nuclear ribosomal DNA (nrDNA) to analyze the phylogenetic relationship between the traditional citrus cultivars and the Byungkyool cultivar. Sequence length of the nrDNA ITS1 region of JNCPCRI (Jeju Native Citrus platymamma Citrus Research Institute) cultivar was 247 bp, 8the ITS2 region was 228 bp and the total ITS region (ITS1-5.8S-ITS2) was 638 bp. Analysis of the genetic relationship based on the sequence analysis at the ITS region of the JNCPCRI cultivar revealed that the ITS1 region of the cultivar was genetically the same as that of the Byungkyool (JQ990189) cultivar, and the ITS2 region was genetically similar to the Binkyool (JQ990180), Hongkyool (JQ990178), Dangyooja (JQ990179), and Pyunkyool (JQ990181) cultivars. Moreover, the total ITS region in the 5.8S rDNA region was genetically similar to the Hongkyool (JQ990178) cultivar. In addition, the total ITS region of the JNCPCRI cultivar was the most closely related to the Cheongkyool (JQ990183) cultivar and has been reported to originate from the Binkyool (JQ990180) and Pyunkyool (JQ990181) cultivars. Although the JNCPCRI cultivar was morphologically the same as the Byungkyool (JQ990189) cultivar, the ITS region showed genetic heterogeneity. Taken together, we conclude that the genetic variation in the ITS region of JNCPCRI cultivar suggests that it was propagated through fertilization with the surrounding citrus cultivars.

본 연구는 제주 지역의 공립 유치원 방과후 과정 전반적인 운영 체계, 급·간식 및 안전 관리, 교직원 구성, 시설 및 행·재정 지원에 대한 교사의 인식을 조사하는데 목적이 있다. 연구에 참여한 교사는 제주도에 소재 하는 공립유치원에서 근무하는 방과후 과정 업무를 담당한 교사 89명이었다. 연구과정은 2015년 1월 5일 (월) ∼ 1월 23일(금)까지 3주간 실시하였다. 연구도구는 선행연구를 참고로 하여 연구자가 수정·보완하여 설문지를 사용하였다. 연구의 결과는 첫째, 특성화 프로그램을 가르치는 외부강사의 질 관리가 필요하다. 둘째, 급·간식 업무는 전문가의 영양(교)사가 담당해야 하며 보안시설이 완비되고 보안 담당자가 배치된 안 전관리가 필요하다. 셋째. 방과후 과정의 인력 배치가 확대 되어야 한다. 넷째, 방과후 과정의 예산이 확대 와 행정 실무 인력의 배치가 필요하다.. 이러한 연구 결과를 통해 유치원 교사의 방과후 과정 업무를 지원 하는 교육청의 행·재정 지원이 마련되어야 할 것이다.

Characteristic of seed for Sageretia thea fruits collected from the habitat of harvest season in Jeju and theirgermination ratio in different temperatures were considered. The average weight was 0.2g, average diameter was 7.2㎜,average length was 6.5㎜, and size distribution range was 5.1~10.0mm. The number of seeds per fruit was 1.8, and 1000grain weight was 7.77g with diameter of 3.7㎜ and thickness of 1.7㎜ in size. The fruit maturation was investigated to befrom April 27 to June 1, when the best maturation period was about a week, May 11 to May 18. Also, the fruits grown onMay 4 to May 11 were seen to have the bigger in transverse size and weight with a tendency of the earlier maturation datehas the greater the number of seeds. S. thea seeds pretreated for 24 hours at 50℃ were not germinated, while most of thosepretreated for 24 hours at 4℃ were successfully germinated at any degree of temperature (except at a temperature of 10℃).Particularly, the highest germination rate of 55% was made at 15℃, and plumule and radicle were best grown within thetemperature range of 25℃.

This study was conducted to provide scientific information for establishing efficient and systematic measures for nature conservation and management in Manjang-gul lava tube. The number of vascular plants was 204 taxa (82 families, 176 genera, 144 species, 1 subspecies, 26 varieties and 1 forma). Of those, pteridophyte were 5 families, 12 genera, 14 species and 1 variety and gymnosperm were 4 families, 6 genera, 5 species and 1 variety. Seventy three families, 149 genera, 157 species, 1 subspecies, 24 varieties and 1 forma in angiosperm composed of 62 families, 123 genera, 137 species, 1 subspecies, 17 varieties and 1 forma in dicotyledon and 11 families, 26 genera, 20 species and 7 varieties in monocotyledon. The number of naturalized plants was 9 families, 17 genera, 18 species and 3 varieties, totaling 21 taxa.