• Journal of Bio-Environment Control
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• v.27 no.3
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• pp.222-230
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• 2018

This study aimed to determine effects of light-emitting diodes on plant growth, leaf morphology and cell elongation of two cultivars ('World-star' and 'Sushiro') of Spinacia oleracea. Plants were grown in a NFT system for 25 days after transplanting (DAT) under the LEDs [White (W), Red and Blue (RB, ratio 2:1), Blue (B), Red (R) LED] under the same light intensity and photoperiod ($130{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, 12 hours). The 'World-star' variety was significantly higher in shoot fresh and dry weights, leaf number, and leaf area than the 'Sushiro' variety. For the 'World-star' variety, the two treatments of mixed light (RB) and red light (R) showed a 35% higher shoot dry weight than that of blue light (B) and white light (W) at 25 DAT. In the 'Sushiro' variety, mixed light (RB) treatment, which had the highest shoot fresh and dry weights, showed 40% higher than the white light (W) treatment, which had the lowest shoot fresh and dry weights. Both varieties showed leaf epinasty symptom at 21 DAT only in both mixed light (RB) and red light (R), and red light (R) treatment showed significantly higher symptom than mixed light (RB), indicating the leaf epinasty is associated with red light. Microscopic observations of the cell size in the leaf center and edge parts showed that the cell density of leaf edge under the red light (R) was lower than that in leaf center, supporting previous reports that suggest an association of the cell size difference between the leaf center and edge with the leaf epinasty occurrence. Since the blue light (B) plays a role in alleviating the epinasty symptom caused by the red light (R), it seems necessary to identify the appropriate mixing ratio of the two light sources. In addition, the World-star variety seems to be more suitable for the cultivation of plant factory using LED light sources.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.36 no.2
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• pp.129-135
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• 2003

Species composition and seasonal variations in abundance of fishes in the Nakdong River estuary were investigated using an otter trawl seasonally from September 2001 to July 2002. These data were compared with those obtained before the construction of the estuary barrage in 1987. A total of 3,648 fishes that comprised 30 species in 21 families were collected. Acanthogobius flavimanus and Leiognathus nuchalis predominated, and they were responsible for $71.2\%\;and\;67.8\%$ in the number of individuals and biomass, respectively. The next abundant fish species were Platycephalus indicus and Liparis tanakai. Compared with data obtained before the construction of the estuary barrage in 1987, abundances of Acanthogobius flavimanus, Platycephajus indicus, Liparis tanakai, Tridentiger trigonocephalus and Lateolabrax japonicus increased, while those of Pholis fangi, Repomucenus valenciennei, Sardineila zunasi and Scomber japonicus decreased. These results seems to be related to change of sediment environment caused by irregular discharge of freshwater with variation of sea water movement in the Nakdong River estuary.

• Proceedings of the Korea Water Resources Association Conference
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• 2007.05a
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• pp.388-392
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• 2007

지구온단화와 이상기후에 의해 시설물 피해가 나날이 증가하고 있으며, 농촌의 인구감소 및 고령화에 의해 이러한 집중강우등에 대한 대처도 어려운 실정이다. 현재 전국에서 농업용수 공급을 위해 사용하고 있는 농업용 저수지는 17,882개소로서 이 중 축조한지가 35년 이상 경과된 저수지가 15,856개소로서 88.7%나 차지하고 있다. 이러한 현상은 저수지를 구성하고 있는 각종 부대시설의 노후화로 귀결되며 농업용수의 낭비 및 효율적인 운영을 위해서는 시설의 현대화가 필수적이라고 할 수 있다. 따라서 본 연구에서는 저수지에서 물을 직접 공급하는 시설인 사통수문을 대상으로 현대화를 이룩하고 또한 사용동력도 대체에너지를 이용하기 위한 방안을 제시하였다. 사통수문의 수문비는 수중의 압력을 효율적으로 분산시킬 수 있는 원형수문비와 수중에서도 사용동력을 가장 적게 할 수 있는 밸브형을 기준으로 개발을 하였으며, 수문비와 구동부를 연결하는 작동 롯드의 힘전달을 최소화하기 위하여 유니버셜 쪼인트를 볼밸브형으로 개발하였다. 이에 따라서 작동용 롯드의 길이가 길어져도 수문비에 걸리는 작동모멘트를 최소화하여 태양광을 이용한 동력사용이 가능해졌다. 특히 수중에서 움직이는 특성을 감안하여 원형 수문비의 경우에는 수문비와 수문틀 사이에 마찰력을 감소시키기 위하여 수문틀측을 약간 경사지게 가공을 하고 중간에 볼 베이렁을 부착시켜 수문개폐가 원활토록 지수부의 구조변화를 하였다. 또한 농업용수공급시 수류와 함께 유입되는 저수지 내 오물을 차단하기 위하여 수문의 전면에 스크린을 설치하였으며 토사퇴적으로 인하여 수문작동의 방해가 되지 않도록 하기 위하여 토목구조물을 설치하였다. 그리고 동력전달을 효율적으로 하기 위하여 Solar Unit으로부터 나오는 전기를 중전기에서 밧데리로 축전을 시키고 완전 충전 후에는 나머지 전기는 방전이 되도록 회로를 구성하였다. 사통수문 자원조사 결과에 의하면 현재 저수지에 물공급을 하는 수문은 취수탑 형식이 70% 이상을 차지하고 있으며 나머지 30%의 사통수문 중 원형수문비가 98% 이상을 차지하고 있다. 현재 대체에너지를 사용하는 저수지 사통수문은 없는 것으로 조사되었으며 전력을 사용하는 사통도 조사결과에 의하면 20% 이내로 나타났다. 이러한 결과는 향후 수리시설 개보수시 적은 예산으로 사업을 시행하는 경우 사통수문의 설치방향의 지표가 될 것으로 판단되며 수리시설의 운영관리에 대한 새로운 대안으로 제시할 수 있다.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.571-576
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• 2013

The purpose of this study is to investigate work related diseases in Korean firefighters and to prepare the preventive measure for health management for the firefighters. Structured self-reported questionnaire was distributed to the firefighters. The result revealed that 37.7% of fire fighters had chronic diseases and 12.3% had chronic low back pains. The affected parts included lumbar region(41.5%), shoulder(33.0%), and neck(23.6%). The affected parts caused physical pain and work discomfort for more than a month. A total of 54.1% firefighters visited to the hospital within a year. This results suggest that it is necessary to develop the health promotion program for the prevention of musculoskeletal disease and regular health checkup for the acute disorders caused by workload.

• Journal of Cadastre & Land InformatiX
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• v.45 no.2
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• pp.1-13
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• 2015

The national land survey is implemented for the purpose of accomplishing the basic goal called an effective development of national land through close survey on physical/social conditions and periodic/social requirements of national land. However, the situation is that there isn't much difference from other data because the data constructed at the local governments or other ministries are gathered to be processed and provided as national land index which is not a field survey while the situation is that the national land index are changed frequently according to domestic and foreign circumstances and transition so that the applicability is low because there is no data accumulated for a long period of time on the same index. Considering that most government offices and local governments are performing surveys out of their own unique necessity to construct the results followed by such survey as data which includes spatial data as a form of database since the importance of statistics data and map data has become highlighted recently, it is necessary to make a new approach in the aspect of investigating the current situation of national territory on the national level. Accordingly, this study has proposed a new national land survey system to prepare for unification of North and South Korea as well as to provide the decision making data necessary for setting up the policies for effective land development and value conservation of the national land.

• KOMUNHWA
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• no.66
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• pp.37-56
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• 2005

이 연구는 강화경판 『高麗大藏經』에 入藏된 『合部金光明經』과 13세기 중엽에 간행된 것으로 추정되는 口訣本 『合部金光明經』의 조성에 참여한 刻成人에 대해 살펴본 것이다. 국가적·범종파적 사업으로 전개된 각성사업에 『합부금광명경』이 조성되고 있는데도 불구하고, 구결본 『합부금광명경』 조성에 참여한 이들은 각성사업과 어떤 관련성을 갖고 있는지 검토해 보았다. 이에 『고려대장경』에 입장된 『합부금광명경』과 구결본 『합부금광명경』을 상호 비교해 본 결과 경전의 내용과 板式, 그 구성 체계가 相異한 본이었다. 그리고 彫成에 참여한 각성인을 조사해 본 결과 『고려대장경』에는 ‘부령’이었고, 구결본은 ‘存植’, ‘立成’, ‘正安’, ‘孝兼’ 등이었다. ‘存植’, ‘正安’, ‘孝兼’은 고종 24년부터 16년간 전개된 각성사업에 참여한 각성인들과 동일 인물이었다. 특히 ‘孝兼’은 자신을 비구라고 밝힌 점으로 볼 때 당시 활동하던 刻字僧으로 파악된다. ‘存植’과 ‘正安’은 고종 33년에 간행된 『禪門三家拈頌集』과 13세기 중엽에 간행된 『圓覺類解』, 『弘贊法華傳』의 조성에도 참여하고 있는 것으로 보아 전문 刻手로 보여진다. 그래서 각성사업에 참여한 각성인들은 각자의 여건에 따라 활동하고 있음을 알 수 있다. 『合部金光明經』은 『妙法蓮華經』·『仁王經』과 함께 호국삼부경 중의 하나로서 고려시기에 수시로 간행되고 있었다. 『금광명경』은 국가를 보호하고 내우외환을 소멸시키기 위해 왕실을 비롯한 관료층들이 깊이 존신하고 권장하려 하였던 불교 경전이었다. 특히 대외관계상의 위기상황에는 『금광명경』을 바탕으로 하는 功德天道場이라는 호국적 성격의 법회를 개최되고 있었다. 따라서 『합부금광명경』의 간행 배경에는 『고려대장경』이 국왕을 정점으로 반외세력인 몽고군을 격퇴시키고, 또 최씨무인정권으로부터 왕권을 회복시키고자 시대적 분위기가 적극 반영되어 있다. 구결본 『합부금광명경』의 간행은 민족적·국가적 사업이었던 각성사업에 적극 동참하면서 현실을 직시하고 고려 불교의 창조적 발전은 물론 외세의 침략으로부터 조국을 지키고자 하는 호국의식을 바탕에 두고 있었다. 〔주제어〕『高麗大藏經』, 『合部金光明經』, 刻成人, 최씨무인정권, 護國經

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.478-486
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• 2010

A lot of local colleges are public relation(PR) using on off line media. However, to examine the effectiveness and efficiency can be maximized to promote research is still lacking. This study was presented to the utilization of the Internet media in local colleges. As a result, local college students were used more offline than online media. Add admission period, girls were higher utilization of the internet entrance site. When nonscheduled admission, vocation high school students were more internet media use. Academic high school students used the internet media, when add admission period.

• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.21-29
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• 2018

The purpose of this study is to explore supporting strategies for teaching and learning based on students' effect recognition and continuous intention in college flipped learning. It was analyzed 426 data by multivariate analysis of variance (MANOVA) by examining student's effect recognition and continuous intention on 15 flipped learning classes of K-university in Chungnam. The characteristics of learners were male, senior students, students who knew flipped learning, students who did not have previous experience, and students who were learning video at anytime. As a teaching strategy, it was found that effect recognition and continuous intention were high in the supplementary deepening flipped learning class and natural science or engineering area. As a teaching and learning supporting strategies, First, the university should develop and operate flipped class learning strategy program for females and low-grade students. Second, it should support the development of good flipped learning design and operation model of instructor. Third, it should support the development of high quality online learning contents that students can learn from time to time. Fourth, it should support the strengthening of teaching competency to develop and operate flipped learning classes. This study can be used as basic data to support and spread the effective flipped learning classes of the university in the future.

• Research in Plant Disease
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• v.13 no.3
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• pp.152-156
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• 2007

Incidences of leaf blight of lily cultivars Raizan and Casa Blanca in the open field cultivation were 50% and 45.4%, respectively, while those in the green house cultivation were significantly reduced to 1.5% and 1.9%, respectively, In the green house, the incidences of the disease in sprinkler watering cultivation were $14.5{\sim}16.5%$, while those in drip watering cultivation were only $1.5{\sim}2%$. Incidence of the disease was severe in the field where the lily was cultivated successively for 2 to 3 years. Isolation frequencies of B. elliptica from overwintered plant debrises such as leaves, stems, capsules, and bulbs were 43.3%, 46.7%, 60% and 0%, respectively, while those of B. cinerea were 10.3%, 0%, 3.3% and 0%, respectively, Incidence of leaf blight in the field where diseased plant debris was cleaned was 7.3%, while that in the field where diseased plant debris was not cleaned was 56.5%. Incidences of the disease in the field where coverages of soil surface with black vinyl, bark or rice straw were used were 6.6%, 8.2% and 11.3%, respectively, while that in the field where the coverage was not used was 21.3%.

• Journal of the Korea Institute of Construction Safety
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• v.3 no.1
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• pp.1-8
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• 2020

Various support is provided for the increase in the number of private lodging users in farming and fishing villages and related government policies. However, the bed-and-breakfast accommodation in rural areas lack safety standards or safety indicators for the service pension Gangneung, carbon monoxide leak accident in December 2018, 2020 East Sea in January, Pension. Large gas explosion, accident and is threatening the security of their citizens. Unlike lodging facilities, private lodging in farming and fishing villages is allowed to operate with certain requirements such as fire extinguishers and fire alarms. The purpose of this study is to present safety standards and safety indicators for lodging facilities in farming and fishing villages, which are necessary for the operation management and inspection of local governments and the government related to lodging in farming and fishing villages. Through the study, safety management areas of private lodging in farming and fishing villages were divided into facility safety, fire safety, food safety and living safety, and detailed inspection indicators were presented. There is an academic implication that research on safety management of lodging facilities has been expanded through safety research in areas related to private lodging in farming and fishing villages. It has practical implications in that it provides management standards and indicators that can be used for safety management of private lodging in farming and fishing villages. The limitations of this study are that more studies on private lodging in farming and fishing villages are expected to be conducted through the results of this study, and the lack of research on accommodation safety has prevented more detailed indicators from being derived.