• Journal of Digital Convergence
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• v.17 no.1
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• pp.37-42
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• 2019

This study investigated the policies of return to farm & rural of the local government 's local communities. Through this, we intend to provide information for the successful establishment of the policies of the local village. The local economy is difficult due to the declining population. Therefore, it is also important as a way to increase the population. It is also important as a way to revitalize agriculture. The results of this study are as follows. The main factors are education, self-sufficiency, adaptation, funding, and consulting. In addition, the importance of these was highest in the self-supporting environment (28%). Followed by adaptation (21%) and funding (20%). Followed by consulting (17%) and education (15%). We can conclude that the factors that show a somewhat lower proportion are less important, but we can also conclude that the importance of the factors is high due to the high maturity of the factors. The importance analysis used AHP technique. The results of this study can be a guide for government policy.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.7 no.6
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• pp.719-729
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• 2017

Recently, the field of agriculture has been gaining a new leap with the integration of ICT technology in agriculture. In particular, smart farms, which incorporate the Internet of Things (IoT) technology in agriculture, are in the spotlight. Smart farm technology collects and analyzes information such as temperature and humidity of the environment where crops are cultivated in real time using sensors to automatically control the devices necessary for harvesting crops in the control device, Environment. Although smart farm technology is paying attention as if it can solve everything, most of the research focuses only on increasing crop yields. This paper focuses on the development of a system architecture that can harvest high quality crops at the optimum stage rather than increase crop yields. In this paper, we have developed an architecture using apple trees as a sample and used the color information and weight information to predict the harvest time of apple trees. The simple board that collects color information and weight information and transmits it to the server side uses Arduino and adopts model-driven development (MDD) as development methodology. We have developed an architecture to provide services to PC users in the form of Web and to provide Smart Phone users with services in the form of hybrid apps. We also developed an architecture that uses beacon technology to provide orchestration information to users in real time.

• Journal of Life Science
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• v.20 no.6
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• pp.838-844
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• 2010

A fibrinolytic enzyme of Streptomyces corcohrussi from soil sediment was purified by chromatography using DEAE-Sephadex A-50 and Sephadex G-50. The analysis of SDS-polyacrylamide gel suggested that the purified enzyme is a homogeneous protein and the molecular mass is approximately 34 kDa. The purified enzyme showed activity of 0.8 U/ml in a plasminogen-rich fibrin plate, while its activity in a plasminogen-free fibrin plate was only 0.36 U/ml. These results suggested that the purified enzyme acts as a plasminogen activator. The fibrinolytic activity of the enzyme under the supplementation of protease inhibitors, $\varepsilon$-ACA, t-AMCHA and mercuric chloride in the enzyme reaction was less than 24%, indicating that it could be modulated by the plasmin and/or fibrinogen inhibitors involved in the fibrinogen-to-fibrin converting process. As time passed, $Zn^{2+}$, a heavy metal ion, inhibited the activity to 34.1%. The optimum temperature of the purified enzyme was approximately $50^{\circ}C$ and over 92% of the enzyme activity was maintained between pH 5.0 and 8.0. Therefore, our results provide a potential fibrinolytic enzyme as a noble thrombolytic agent from S. corcohrussi.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.44 no.1
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• pp.71-77
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• 2011

The effects of temperature, light, and salinity on the growth of Costaria costata and Undaria pinnatifida juveniles were examined in laboratory cultures. In a cultivation farm, the monthly yield and density were also investigated between December and April for C. costata and between December and March in 2007 and 2008 for U. pinnatifida. The relative growth rates (RGRs) were greater at $20{\sim}60\;{\mu}mol$ photons $m^{-2}s^{-1}$ than at low ($0{\sim}10\;{\mu}mol$ photons $m^{-2}s^{-1}$) and high ($100{\sim}180\;{\mu}mol$ photons $m^{-2}s^{-1}$) irradiance levels. The optimal growth conditions for the two species were $17^{\circ}C$, 35 psu, $60\;{\mu}mol$ photons $m^{-2}s^{-1}$, and a daylength of 12 h, indicating that C. costata and U. pinnatifida have very similar growth responses to temperature, light, and salinity. However, the growth responses of the two species to various environmental factors were different; C. costata grew faster than U. pinnatifida but the latter species grew well at low salinity. The monthly yield of C. costata and U. pinnatifida increased steadily over the study period, and it was maximal in March for both species, but the yield of U. pinnatifida was greater than that of C. costata.

• Proceedings of the KAIS Fall Conference
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• 2012.05b
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• pp.704-707
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• 2012

현재 국내 농업은 고령화로 인하여 10년간 전체 농촌인구의 3분의 1이 감소하고 있으며 농업 인구의 공동화 현상이 진행되고 있다. 농촌 인구의 인력을 해결하기 위해서 농업 선진국들은 적은 인력으로 생산성을 증대하기 위해서 자동화 시스템을 도입하고 있다. 따라서 국내 농업 생산성 증대를 위해 자동화 시스템은 필수적이며 도입으로 인하여 인력 부족 현상을 해결하고 농가 소득을 필요성이 중요시되고 있다. 따라서 진정한 무인 자동화 시스템이 가능하려면 신뢰성이 보장되면서 일반 농가에서도 부담 없이 도입 할 수 있는 저가의 시스템이 필요하다. 이러한 시스템을 필요로 하는 농가에 시스템을 구축 시 들어가는 구축비용을 줄이기 위해 저가의 센서들을 네트워크로 연결하여 안정적으로 동작하는 서버 개발이 필요하며 이러한 서버를 통하여 실시간으로 손쉽게 눈으로 확인하기 위하여 스마트폰과에 연계 기술이 필요하다. 본 연구에서는 온도, 습도, Co2등의 다양한 영농 환경 정보들을 수집하고 이를 스마트폰으로 통하여 실시간으로 확인하게 할 뿐만 아니라 원격제어를 통하여 천장계폐와 LED를 손쉽게 제어 할 수 있도록 하였다. 이렇게 설계된 시스템으로 제어뿐만 아니라 수집된 데이터를 통하여 농가 환경을 분석하기 위한 정보로써 활용 될 수 있으며 유무선 공유기를 통하여 언제 어디서든 네트워크가 연결된 곳이라면 시스템에 접근이 가능 하도록 하였다.

• Journal of agriculture & life science
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• v.51 no.2
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• pp.117-126
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• 2017

Hanwoo young bulls are selected based on performance test using the weight at 12 months and pedigree index comprising marbling score. Pedigree index was not based on the progeny tested data but the breeding value of the proven bulls; resulting a lower accuracy. The progeny testing of the young bulls was categorized into testing at farm and at the test station. The farm tested data was difficult to compare with those from test station data. Farm tested bulls had different slaughter ages than those for test station bulls. Therefore, this study had considered a different age at slaughter for respective records on ultrasound traits. Records on body weight at 12 months, ultrasound measures at 12 and 24 months(uIMF, uEMA, uBFT, and uRFT), and carcass traits(CWT, EMA, BFT, and MS) were collected from steers and bulls of Hanwoo national improvement scheme between 2008 and 2013. Fixed effects of batch, test date, test station, personnel for measurement, personnel for judging, and a linear covariate of weight at measurement were fitted in the animal models for ultrasound traits. The ranges of heritability estimates of the ultrasound traits at 12 and 24 months were 0.21-0.43 and 0.32-0.47, respectively. Ultrasound traits at 12 and 24 months between similar carcass traits was genetically correlated at 0.52-0.75 and 0.86-0.89, respectively.

• Animal Systematics, Evolution and Diversity
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• v.30 no.4
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• pp.334-338
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• 2014

Specimens of Austinogebia wuhsienweni (Yu, 1931) previously recorded from China to Japan were collected at a manila clam farm of 0.5 m depth in Hongseong, Yellow Sea. They were briefly described and illustrations included color photographs, since this was the first record of this rare species from Korean waters. Three species of Upogebiidae are known from Korean waters: Upogebia major (De Haan, 1839), U. issaeffi (Balss, 1913), and A. wuhsienweni (Yu, 1931). They are similar to each other, however, the presence of the ventral spines of the rostrum, a proximal knob on the lateral margin of the uropodal endopod, and a longitudinal carina on the inner surface of the palm of the male first pereiopod can easily distinguish the present species from the two species of Upogebia.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2006.05a
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• pp.1264-1271
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• 2006

최근 RFID/USN (Radio Frequency IDentity/Ubiquitous Sensor Network) 시장의 급격한 성장으로 비즈니스 영역에서 물류/유통 뿐만 아니라 국방, 창고 및 공정관리 등 영역을 지속적으로 확장하고 있다. 본 연구는 RFID를 이용한 농작물 개체관리와 USN을 이용한 농작물 생장환경 관리를 구현하고 두 시스템을 통합하는 비즈니스 모델(한국형 u-Farm 모델)을 제시하였다. 이를 통하여 소비자에게는 농작물 이력데이터를 제공하여 상품에 대한 신뢰성을 확보할 수 있고, 생산자는 생장환경정보를 주기적으로 획득하여 최적의 생산조건을 구현하는 기반을 마련하였다.

• Proceedings of KOSOMES biannual meeting
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• 2004.11a
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• pp.105-108
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• 2004

Organic acid is made with carbonized organic acid that is produced from charcoal burning process. It is evaluated whether carbonized organic acid is able to removed Enteromorpha in the laboratory and Porphra aquaculture farm test. The optimum condition for Enteromorpha removal are revealed ten times dilution and ten second immersion. The mortality rate of Enteromorpha is $95\%$ and diatom-detaching rate is $100\%$ by the organic acid treatment. On the other hand, the mortality rate of Porphra is lower than $5%\$. It was measured that nitrogen was 0.175 mg/l and phosphorus was 0.0158 mg/l. Therefore, Concentration of nutrients were lower than being necessary to Porphra growth. Growth rate of Porphra was $12\%$ increased by organic acid treatment with carbonized organic acid added nutrient.

• Journal of the Korean Society of Safety
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• v.15 no.4
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• pp.127-133
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• 2000

The incomplete treatment of the swinery wastewater is one of the major factors of the river contamination resulting from an eutrophication. Even through many treatments were considered to reduce the contamination of the river by the swinery wastewater, the most effective treatment was not developed yet. Therefore, this project was focused on the development of the treatment that was a low cost and a high efficiency using a steel-making slag. The swinery wastewater was passed through a U-type tube packing the slag in the laboratory. And the swinery wastewater was cleaned effectively in the laboratory experiment. Based on these laboratory results, the treatment facility in a stock farm was constructed to confirm the effect of slag on the first-treated swinery wastewater. After the treatment of the first-treated swinery wastewater through the slag, the water quality of the river was improved and the biodiversity was increased.