• 한국의학물리학회지:의학물리
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• 제9권1호
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• pp.29-35
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• 1998

There has been necessity of an air free ionization chamber using the gold-crystal-aluminium plates, henceforth called the crystal chamber. The crystal chamber formed of parallel plates is very small in size and has more response for absorbed dose of therapeutic radiation beams. The gold plate on the crystal facing the photon and electron beam acts as an intensifier of signals and crystal plate as an ionization medium respectively. Both the copper guard ring and the aluminum collecting electrode are connected to an electrometer. Using high energy photon (6, 15 MV) and electron (9, 12, 15, 18 MeV) beams, the responses of the crystal chamber are evaluated against a PTW Farmer-type chamber at a field size of 10${\times}$10cm$^2$ and 100 cm SSD. The responses of crystal chamber for therapeutic radiation electron and photon beams are greater in magnitude by several order than Farmer. The crystal chamber has good linearity without correction factor C$\_$t,p/ with respect to the signals, a reading reproduction with good accuracy and precision less than 0.5%, and has other useful functions in measuring radiation beams.

• 한국가금학회지
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• 제39권4호
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• pp.269-271
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• 2012

The chicken has been growing in Korea for more than a thousand years according to the history book and commercially rising for broiler meat only since 1960's. As income increased mainly due to improved economy, it changes the habit of eating especially chicken meat. The structure changes into a coordinated production and marketing system which forced the prevailed small and independent producers to become a contract farmer under the vertically controlled practices. This coordinated structure began in 1970's and evolved continually to occupy around 90 percent of the market in 2010 with some ten (10) private brands being advertising. The industrial organizations have also conducted the generic promotion by a farmer's check-off program. Over the past 20 years, chicken import steadily increased to meet about 25 percent of the domestic market while the export showed negligible growth. As a whole, the structure change and international trade devoted to increased chicken consumption from 2 kg with the independent operation to 11 kg currently under the coordinated system and import. It is predicted that chicken consumption will grow in years to come and the import will also increase in addition to local productions, considering the free trade agreement that has already been in practice with EU and US to open the market eventually from all sources of supply worldwide.

• 농업과학연구
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• 제48권1호
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• pp.59-71
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• 2021

This study investigated the extent to which rice producers from the Ayeyarwaddy Region of Myanmar could improve their productivity if inputs were used efficiently in rice cultivation. To achieve this objective, simple random sampling was used to collect data from 300 rice growers in the study area. Data were analyzed with the translog stochastic frontier approach to understand the production efficiencies. The study further estimated the influencing factors that affect the efficiency levels of rice farmers. The empirical result reveals that the average technical, allocative, and economic efficiencies were at 76.11, 47.85, and 34.15%, respectively. This suggests that there is considerable room for improving rice production by better utilization of the available resources at the current level of technology. This study suggests that strenthening agricultural training programs and adoption of improved rice varieties may reduce overall inefficiencies among rice farmers in Myanmar. Factors like age, household size, education, farming experience, farm size, rice variety, training, and off-farm income have a significant impact on increasing/decreasing farmer's efficiency. Efficiency can be improved by establishing farmer field school programs to increase the scale of operations. The government should encourage young educated people to participate in paddy production and also intervene to reduce input prices and control the quality of seeds.

• Archives of Plastic Surgery
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• 제42권2호
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• pp.254-256
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• 2015

• 한국지역사회생활과학회:학술대회논문집
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• 한국지역사회생활과학회 2005년도 춘계학술대회 자료집
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• pp.174-175
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• 2005

• 한국작물학회지
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• 제33권2호
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• pp.195-200
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• 1988

벼를 보통기에 동일하게 이앙하여 추앙후 20일, 유전형성기, 감수분열기 및 출수기의 생육시기별로 포장상태에서 3일간씩 관수처리한 경우와 품종, 이앙기 및 재배조건이 다양한 농가포장에서 태풍 'Thelma 호'('87년 7월 16~18일)에 의해 3일간 관수된 경우에 생육단계별 피해상태와 피해주의 고립분얼이삭의 발생에 의한 수량 보상력을 검토한 결과는 다음과 같다. 1. 보통기 이앙된 벼의 생육시기별 관수처리에서는 생육이 진전될수록 관수된 수온이 높아져 피해가 컸으나 고온기에 여러 생육단계를 갖는 농가포장이 일시에 관수되면 어린 생육단계일수록 피해가 컸다. 2. 생식생장 관수 피해수의 수량보상은 고립절분얼이삭에 의존하였고 고립절분얼이삭이 9월 15일 출수되어 등숙적산온도가 69$0^{\circ}C$, 등숙일조시간이 210시간이 확보되었을 때 쌀 230kg/10a을 보상하였다.0a을 보상하였다.

• 농촌지도와개발
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• 제14권2호
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• pp.351-371
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• 2007

The objectives of this study were to analyze the present status of upbringing young farmers and to suggest directions for the future improvement for upbringing the young farmers' workforce in rural Korea. This study was conducted through review of literature related to agricultural workforce and young farmers. Opinions were collected from agricultural workforce staff of city and county extension center about role, development strategy of young farmers' workers. The total of 145 extension educators in charge of workforce section at Agricultural Extension Centers at city and county level participated in the study and 137 data were used for final analysis. The major findings from this study were as follows: 1) The strategy for the upbringing young farmers should be established by national and local governments. 2) The status for the young farmers' policy must be placed high er than present situation. 3) The systems and rules should be deregulated for the secure agricultural production base. 4) Agricultural income sources should be developed extensively by national and local governments.

• 농촌계획
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• 제25권2호
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• pp.75-87
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• 2019

Securing manpower in rural areas is critical to improving the productive potential and overcome challenges caused by changes in the demographic structure and the need for diversification of the rural economy. This underpins the importance of nurturing young farmers in order to enhance the agricultural competitiveness in the rural areas. On the other hand, 42.3% of young farmers under the age of 40, which is the target age of the government-sponsored program to foster young farmers, grow rice. Meanwhile, 42.3% of the farmers are under 40 years of age which is a category of farmers targeted under the government sponsored program to advance rice production. In this study, a bivariate probit model is used to conduct substantive analysis on the potential political interventions that would persuade young farmers in the rural areas to participate in rice production in the 6th industry. In summary, most important factors identified as to influence participation of young farmers in the diversification of crop production are the utilization of information device, land, ownership of agricultural machinery, and the leasing of the cultivating land.

• 농촌지도와개발
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• 제27권2호
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• pp.89-110
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• 2020

This study aims to explore field cases of social farming programs for the youth's rural in-migration and to suggest the political and practical directions of the initiative of social farming in Korea. Two cases of social farm were selected and one operators and two participants of each farm were interviewed. The results are as follows. First, the participants had a firm priority that social farming is based on farming activities and places, and recognized it as the practice of embracing socially vulnerable groups. Second, the hosts were running their social farms based on their own understanding of social farming, which turns out to show different characteristics of the program. Third, the participants joined the program with the motivation of having an experience of rural life, exploration of career paths, and a need a need of community settlement, restructuring their experiences. Based on these results, the direction of social farming for youth's rural in-migration was suggested.

• 농촌지도와개발
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• 제9권2호
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• pp.185-197
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• 2002

The supporting system for agricultural workforce and education strategy has been changing both domestically and worldwide range term. To change the fundamental directions, much more needs to be learned about the process of structural adjustment regarding the dynamics of the agricultural and rural sectors. A rural development doctrine must pay more attention to the ongoing problems of population imbalance and the dissolution of the countryside. The focus should be young people prefer to live in cities because there are more opportunities, services, and great personal fulfillment. This paper was described the effective fostering directions of young agricultural workforce and educational program to prepare future and young farmer for teaching careers in agriculture, food, farm management, and marketing. To achieve these goals, the specific approaches are 1) establish the strong partnership between related organizations of agricultural business, 2) strengthen the management and marketing education of products, 3) create the various in-farming or out-fanning incomes including green tourism, 4) enhance the aggressive marketing strategies by Internet, Telephone, and TV etc, 5) make the association among the same items for the effective research and risk management.