• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.108-108
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• 2017

The objective of this study was to know prospect and present state of new variety breeding of Forage and Grassland in South Korea. The industry of forage in Korea is going up to expend through utilization of good quality forage, Italian ryegrass, forage corn and oat rather than rice straw. Especially, since 2007, Italian ryegrass(IRG) had been very important major winter forage crop in South Korea and developed 13 varieties including very early maturity variety (three varieties), early maturity variety (three varieties), medium maturity variety (one variety) and late maturity variety (six varieties). But the disadvantage of Italian ryegrass was weak winter hardness and drought but has good advantage of forage nutritive value, high-yielding and high sugar content, and like livestock as like hanwoo, dairy cattle, goat so on. The Ko-variety (Korea developed variety) of Italian ryegrass has high cold-tolerant and adaptability more than any other country developed variety, and expend to cultivation area from southern area (below Daejeon) to middle-northern area (upper Han river). Although the cultivation area of Italian ryegrass of South Korea was 21,700 ha in 2007, right now, that of Italian ryegrass is about 123,600ha due to expend cultivation area and know famer to good forage crop and have a various maturity varieties (very early, early, medium, late) according to local situation (before-crop harvesting stage or double cropping system). The seed market of Italian ryegrass in South Korea becoming extended to around 100 million Korean won and seed export get nearer to foreign country. We are going to develop of new variety for stress tolerant and high yield and quality forage variety, good adaptability to the Korean environmental conditions including reclaimed area, make self-sufficiency system for forage seed (Italian ryegrass), export our seed to foreign countries.

• 한국작물학회지
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• 제62권2호
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• pp.134-142
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• 2017

Crop production in rice paddy fields is of great importance because of declining rice consumption and the low self-sufficiency ratio for field crops in Korea. A controlled drainage system (CDS) is recognized as an effective means to adjust water table (WT) levels as needed and control soil water content to improve the soil environment for optimum crop growth. The present study evaluated the effects of a CDS on soil characteristics, including soil water distribution and soybean development in paddy fields. The CDS was installed with two drain spacing (3 m and 6 m) at the experimental paddy field at the National Institute of Crop Science, Miryang, Korea. It was managed with two WT levels (0.3 m and 0.6 m) during the growing season. Soil water content, electrical conductivity and plant available nitrogen content in the soil were significantly greater in the 0.3 m WT management plots than in the 0.6 m plot and the control. At the vegetative stage, chlorophyll content was significantly lower with higher WT control because of excess soil moisture, but it recovered after the flowering stage. Soybean yield increased with WT management and the 0.6 m WT treatment produced the greatest grain yield, $3.38ton\;ha^{-1}$, which was 50% greater than that of the control. The CDS directly influenced outflow through the drains, which significantly delayed nutrient loss. The results of this study indicated that WT management by CDS can influence soil characteristics and it is an important practice for high yielding soybean production in paddy fields, which should be considered the crop growth stages for stable crop production.

• 에너지공학
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• 제29권2호
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• pp.79-84
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• 2020

2020년 BAU대비 30%의 온실가스를 줄이기 위해 건설 산업에서의 온실가스저감을 위한 제로에너지건축물 구축기술의 연구개발이 이루어지고 있다. 최근 제로에너지건축물 기반 구축과 상용화를 통해 의무화로 정책이 추진됨에 따라 제로에너지건축물 인센티브제도 현황 및 에로사항 파악을 통한 기술 지원 및 확대 방안을 강구해야 한다. 제로에너지건축물을 구현하기 위해서는 패시브 강화(에너지효율등급 1++이상) 및 에너지자립율 달성(20%이상)을 위한 신재생에너지 설치 등으로 인한 과다한 공사비가 발생됨에 따라 보급 활성화에 주 문제점으로 제시되고 있는 실정이다. 본 논문에서는 제로에너지건축물 보급 활성화를 위해 제로에너지인증을 위한 주요 문제점 및 해결 방안 등을 제시하였으며, 최근 제로에너지건축물 의무화에 따른 정책 변화를 분석하였다.

• 한국태양에너지학회 논문집
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• 제40권3호
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• pp.21-31
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• 2020

The government mandates gradually zero energy building and Photovoltaic power generation systems installed in buildings are emerging as the most realistic alternative to increase the independence rate of building energy. In this study, we propose a method to reduce the power consumption of households by increasing the PV capacity of balconies and applying the method used the charged electric power stored in batteries after sunset. In order to evaluate the electric power energy savings of the residential BESS, a balcony PV 1.2 kW and a battery pack 2 kWh were installed for 9 houses in 4 apartments in Seoul and Gyeonggi-do. The BESS is charged when the balcony PV is generated electric power, and when solar power generation is finished, it supplies power to the electric appliances connected to the load. As a result of installing the solar PV module 1.2 kW and 2 kWh class BESS for 3 households located in Seoul and Gyeonggi-do, the average electric power consumption saving rate was 40%. The reduction in electricity consumption in the case of zero generation surplus power by maximizing the utilization rate of BESS has been improved to about 53%. Therefore, in order to increase the self-sufficiency rate of electric energy in apartment houses, it is effective to increase the solar photovoltaic capacity of the balcony and apply the residential BESS. In the future, it is believed that the balcony PV and home BESS will play a key role in achieving mandatory zero-energy housing.

• 복식
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• 제52권8호
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• pp.87-98
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• 2002

Recently, we consist in the crucial juncture have to develope culture goods which is worth standing for our nation's endemism. In this vein, this study tried to reproduce and apply it to the present time by the consideration of various elements such as the kind, the use and the fabrication of sewing craft-works was beloved in women's quarter called Kyubang in the Chosun dynasty. With this, this study was designed to develope craft-works which can make an appeal to foreigners with the merits between contemporary factor and traditional factor. The findings of this study were as follows; First, since economic system in the Chosun dynasty was based on home handicrafts and self-sufficiency, it was a commonplace of the Chosun dynasty that home industry such as sewing, spinning and sericulture was thriving among all the women without social ladder. And also, since women of the day were governed by confucian tradition and moral obligation, they mainly have to live in women's quarter called Kyubang restricted to visitors. For the reasons, Wives of the time have no choice but to spend their time by sewing in the promotion of virtues for woman. In additions, they made an effort to pray for the longevity, the wealthy and the fertility of their family members. Second, the sewing instruments is necessary for women's sewing. And also, since sewing instruments was considerably scientific, efficient in those shape and structure, this instruments could save wives a lot of trouble. Third, since many people were convinced of the functions as practicality as well as fanciness, the sewing craft-works were very useful to them in leading their daily life. Fourth, the reappeared works were a total of 22, and the applied works were a total of 17.

• 한국작물학회지
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• 제20권
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• pp.115-121
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• 1975

맥후작 면화재배에서 숙기를 단축하고 적채면수량을 증가시키고자 본실험을 실시하였든바 그 결과를 요약하면 다음과 같다. 1) 맥후작 면화재배에서 10월상순 Ethrel를 산포하면 적채면화율이 무처리구의 38%에 비하여 2,000ppm처리구의 그것은 93%였으며 개서는 20일이나 앞당겨 졌다. 2) 수량에서는 무처리구에 비하여 Ethrel처리구가 15%∼38%까지 증수되었다. 3) 한편 섬유장과 섬유장력에 있어서는 처리구는 무처리구와 차이 없었으나 적채면과 목채면간에는 무처리구 및 Ethrel처리구에 있어서 각각 평균 1.3mm 정도 목채면이 더 짧았다. 4) 1삭중과 종자 100립중에서도 Ethrel처리로 인한 차이는 전혀 없었으나 적채면과 목채면간에서는 목채면이 훨씬 가벼웠다. 5) Ethrel로 처리된 적채면종자는 무처리의 그것에 비하여 발아가 촉진되었다. 그러나 목채면종자의 발아율은 철된것이나 안된것이나 바슷했다. 6) 이상의 결과로서 맥후작면화재배에 있어서 만숙장섬유품종을 도입하여도 Ethrel를 적용하면 적채면수량이 더욱 증가된다고 본다.

• 자원환경지질
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• 제41권5호
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• pp.609-615
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• 2008

페루는 안데스산맥에 위치하는 태평양연안 국가로서 석유 자급이 불가능한 산유국임에도 불구하고 남미의 어느 국가에서도 찾아보기 힘든 좋은 투자 환경을 조성하여 외국 석유회사들의 투자를 유치하고 있다. 특히 외국 석유회사들이 페루 석유산업에 대거 투자할 수 있는 여건을 만들기 위하여 낮은 로열티, 세금 감면, 호의적 광권계약 조건 등과 같은 투자 환경을 만들었다. 유가의 급등으로 인하여 미개발 지역인 아마존 정글 지역의 1-AB광구나, 까미세아 가스전과 같은 성공적인 유전들이 불과 몇 년 사이에 개발, 생산되고 있으며, 우리나라 자원외교 전략과 부합되게 최근 여러 개의 페루 광구들에 대한 탐사, 개발, 생산에 우리나라의 석유회사들이 참여하게 되었다. 이 시기의 다른 남미국가들에 비하여 페루에 우리의 석유산업 투자가 보다 많아질 것으로 기대된다.

• International journal of advanced smart convergence
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• 제9권1호
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• pp.82-89
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• 2020

This study is a design study related to the application of 3D printer technology for garment printing. Knitting, which used to be a home industry in the early days, originally comes from hand-knitting. This evolved with various personal devices as a small job for the self-sufficiency of early European housewives. In addition, since the Industrial Revolution, mechanical production entered the mass production mass supply system, and various apparel products were provided to consumers in accordance with mass standardized dimensions. This is similar to the development process in Korea. In addition, it has formed a considerable market with the situation that it can produce and supply apparel products at low labor costs of first-generation Namdaemun and Dongdaemun merchants. As the production shifted to the Southeast Asian region due to the increase in labor costs in the domestically developed social situation, the production of garment products in Korea is now almost 5%. As a result, apparel-related production facilities and related companies are constantly moving to other countries to move production facilities sensitively due to rising labor costs. Recently, smart factory automation has been planned to explore new possibilities. In addition, in recent years, with the evolved appearance of consumers, the appropriate supply of the right amount of production has appeared, and the 3D printer applied to personal garment output has attracted considerable interest in the customized market. Therefore, in order to become a new hope and a small addition to various clothing workers, this study conducted related research on the following 3D printers for clothing output and attempted to proceed with a new design.

• 한국환경농학회지
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• 제29권3호
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• pp.304-308
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• 2010

This study compared and analyzed existing studies and released papers to identify the "definition and scope of urban agriculture" which correspond to the circumstances of Korea based on the fact that urban agriculture was selected as one of the measures to pursue green growth by the Presidential Committee on Green Growth (PCGG) and the discussions and deliberations among PCGG, government, academia, civic organizations, and experts. It also aims to present the ways of policy to facilitate the development of urban agriculture based on the mentioned identification. This research proposes the definition of urban agriculture as 'all agricultural activities that incorporates multi-functional public benefits of agriculture performed within the administrative district of a city. However, the scope of urban agriculture should exclude the agricultural sites, the methods, and the activities that are against the multi-functional public benefits of agriculture, which will be determined depending on the spaces, methods, and purposes of planting food crops. In order to facilitate the development of urban agriculture, the government should implement the policy measures as following: (1) to analyze spaces for farming, and provide the spaces to the citizens; (2) to prepare legislation and institution that will allow citizens to use the farming spaces continuously; (3) to develop Korean-style urban agriculture model that fully reflects the features of Korean cities; (4) to develop a system where the urban citizens can easily learn and experience the urban agriculture; and, (5) to provide incentives that will attract active participation of urban citizens such as carbon mileage. (6) to analyze effect of urban agriculture to save energy and food self-sufficiency.

• 대한지역사회영양학회지
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• 제20권1호
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• pp.30-40
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• 2015

Objectives: This study was performed to investigate the associations of food security with socio-demographic characteristics, nutrient intakes and mental health status among older Korean adults. Methods: This study was conducted using data from the 2008-2010 Korea National Health and Nutrition Examination Survey (KNHANES). Subjects were 4,451 adults aged 65~98 years. Food security was measured using a self-reported question on food sufficiency of subjects' household. Based on the answers, study subjects were classified into secure, mildly insecure, moderately insecure, and severely insecure groups. Dietary intake was estimated by 24-hour dietary recall. Nutrient intake was assessed by dietary reference intakes (DRI). As for mental health status, the data on mental stress, depression, and suicide ideation were used. Results: Rate of food insecurity in older adults was 14.3%. Old age, being female, low education, low income level, living alone, and discomfort in daily living were more related to food insecurity. Means of nutrient intakes were significantly different according to food security status. Intakes of calcium, potassium, and vitamin $B_2$ were lower than recommended intakes in all groups. Consumption amounts of soy and soybean products, vegetables, mushrooms, fruits, vegetable oils, meats, eggs, seafood, and dairy products were lower in food insecure groups. Mental stress, depression, and suicide ideation were higher in food insecure groups independent of the gender and income level. Conclusions: These present findings suggested that food security is related to mental health as well as nutrition status in older Korean adults. A national system that include food and psychosocial support programs for the elderly should be considered in order to improve the overall health of older Korean adults.