• 대한가정학회지
• /
• 제35권6호
• /
• pp.111-125
• /
• 1997

The purposes of this study were to analyze the work and leisure of rural couples in Chonnam district, to examine couple's perception about farm life, to analyze the factors influencing the time use of husbands and wives. 300 farmhouses were selected by stratified sampling from 20 Myon in Chonnam district, 244 husbands and 283 wives were interviewed using questionnaire and time diary. The major results are as follow : 1) The rural couples have not pride on agriculture, the level of satisfaction and policy reliability was low, and impoverished conditions was high. 2) work time of wives was two hours longer did, and leisure time of wives was 73 minutes shorter than their husbands. 3) The time use of husbands and wives were significantly influenced by agricultural type, farmwork, house work time, age etc.

• 가족자원경영과 정책
• /
• 제12권3호
• /
• pp.81-101
• /
• 2008

The purpose of this study is to examine support policies regarding work and family reconciliation, to suggest plans to improve workplace policies, and to suggest directions for further studies. This study looks at OECD's work-life reconciliation policies as well as family friendly workplace policies in Korea to find a way to enhance business' receptiveness and implementation of the policies. By examining women's labor conditions, this study finds that family friendly workplace policies are necessarily imminent in our society of low fertility and ageing. Along with the evaluation of benefit level and the effectiveness of current policies, this study uses data from interviews with working mothers who have had the experience of family friendly benefits. The results of the analyses suggest that the government should focus on improving the workplace environment in companies that do not show bias against the use of family friendly policies. In order to farm more successful policies, future studies are needed to analyze the changes of fertility, working conditions, support programs, and benefits.

• 드라이브 ㆍ 컨트롤
• /
• 제10권2호
• /
• pp.30-36
• /
• 2013

Tractor is a farm vehicle that is designed to provide a high tractive effort at low speed. It is used for versatile agricultural tasks such as hauling a trailer, tillage, mowing and construction work. Most older tractors use a manual transmission. However, as the intensity of work increases, tractors equipped with automatic transmission become popular due to the work convenience. In order to give the operator a large degree of control in field work, 24 gears with automatic 8-speed and manual 3-speed are arranged in transmission. This paper deals with the gear train that is designed for 8-speed automatic transmission by the engagement of multi-disk clutches. The gear ratio for each speed as well as power transmission mechanism is analyzed through velocity analysis. In addition, constraints of mesh gear ratio are derived by investigating the power flow path in velocity diagram for the given 8-speed gear ratio.

• 대한가정학회지
• /
• 제41권7호
• /
• pp.157-168
• /
• 2003

The purposes of this study were to explore the rural women's labor by measuring labor value economically. To achieve the purpose, this study applied four methods : replacement cost method individual function, replacement cost method generalist, opportunity cost method and shadow wage method. The results of this study were as follows: 1) Time used for agricultural work and household work by with women were 5.3 hours and 3.8 hours each. 2) According to the methods used, the amounts of valuing rural women's labor were varied and ranged from 23,000 won to 43,000 won per day. This study might help recognize the degree of rural women's labor contribution to the household income of farm households and improve the socio-economic status of rural women through showing the productivity of the rural women's labor.

• 한국인터넷방송통신학회논문지
• /
• 제10권6호
• /
• pp.225-233
• /
• 2010

최근, 스마트 그리드, 스마트 홈 네트워크, 유비쿼터스 컴퓨팅 등의 분야에서 필요한 정보를 수집 및 가공하여 실시간 양방향으로 교환하고, 제어 및 감시하는 스마트 정보 모니터링 기술에 대한 연구를 계속 해 왔다. 본 논문에서는 에너지, U-Farm, 차량정보 및 홈 네트워크에 관한 스마트 정보 모니터링 기술의 응용 제품 및 최근 동향들을 알아본다. 특히, 스마트 그리드의 핵심부분인 스마트 미터와 실시간으로 정보를 교환하는 구글 파워미터, 유비쿼터스 농업을 위한 실시간 모니터링 시스템, 차량상태 정보를 위한 실시간 모니터링 시스템, 저전력, 저가격의 ZigBee 기반 스마트 정보 모니터링 기술 응용 및 관련사례에 대하여 기술한다. 마지막으로 스마트그리드 제주 실증단지 구축현황에 대하여 기술한다.

• 농업과학연구
• /
• 제43권1호
• /
• pp.144-151
• /
• 2016

With an aging population in rural areas, farm owners in South Korea are also aging. In particular, this phenomenon leads to the lack of human resources in rural areas and agriculture, worsening the deterioration of the rural economy. This study aimed, firstly, to analyze the criticality of the lack of human resources and high production cost issues for farmers, before using the farm as cooperative nursery of rice seedlings. Secondly, the study analyzed farmer satisfaction after using the farm cooperative. Analysis results are as follows. The motives of the research subjects for using the co-nursery were the aging of the farming population, the expected reduction of production costs, and farmers' failure in raising seedlings. Importance-performance analysis measured the importance for the farms for cooperative raising of rice seedling at 3.49 and the performance for the farms at 3.41, with a difference of 0.07 between them. The four importance-performance matrix areas, used were as follows: concentrated efforts required (Quadrant I: concentrate here), continuous maintenance (Quadrant II: keep up the good work), gradual improvement (Quadrant III: low priority), and avoiding excessive efforts (Quadrant IV: possible overkill). Based on the results, it was concluded that improvements and efforts would be necessary for each of these areas. And, there is a need to improve services through the initiation of farmer use of this rice co-nursery.

• 한국전자통신학회논문지
• /
• 제15권5호
• /
• pp.959-966
• /
• 2020

수산업의 중요성이 커지고 양식 산업이 급성장한 가운데 수산 양식 분야 ICT 융합을 통한 스마트 양식장에 대한 연구가 진행되고 있다. 양식장 현장에서 생육 환경 모니터링이 가능하도록 수중 드론의 구동부, 영상 수집 장치, 자세 안정화를 위한 통합 컨트롤러, 실시간 수중 영상을 통한 드론 조정 및 제어가 가능한 원격 관제 장치를 제안하고 설계, 개발 및 시험을 진행하였다. 수중 드론 활용을 통해 양식 산업에서 문제 되는 인력 수급 및 고비용 작업을 대체 할 수 있으며, 양식 폐사 확률을 줄여 안정적인 양식장 관리가 가능하다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제15권11호
• /
• pp.1543-1545
• /
• 2002

A T$\longrightarrow$A mutation in the promoter region of porcine myostatin (MSTN) gene has been identified in our previous work. This study analyzed the associations of the myostatin genotypes (TT, TA) caused by this mutation with birth weigh in Yorkshire pigs. Data from 211 unrelated individuals were collected three times from one breeding farm. Detections of the mutation were carried out by PCR-RFLPs approach. The effects of MSTN genotypes (TT and TA) on birth weight were compared by least square means. The results showed that for birth weight of Yorkshire pigs, individuals with TA genotype were significantly higher than those with TT genotype (p<0.05), and the birth weight for pigs with TA genotype were 1.37 kg in average but only 1.25 kg for pigs with TT genotype, indicating a positive effect of birth weight for A allele.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• 제10권3호
• /
• pp.1362-1376
• /
• 2016

A cloud computing system can be characterized by the provision of resources in the form of services to third parties on a leased, usage-based basis, as well as the private infrastructures maintained and utilized by individual organizations. To attain the desired reliability and energy efficiency in a cloud data center, trade-offs need to be carried out between system performance and power consumption. Resolving these conflicting goals is often the major challenge encountered in the design of optimization strategies for cloud data centers. The work presented in this paper is directed towards the development of an Energy-efficient and Performance-aware Cloud System equipped with strategies for dynamic switching of optimization approach. Moreover, a platform is also provided for the deployment of a Wind Farm CMS (Condition Monitoring System) which allows ubiquitous access. Due to the geographically-dispersed nature of wind farms, the CMS can take advantage of the cloud's highly scalable architecture in order to keep a reliable and efficient operation capable of handling multiple simultaneous users and huge amount of monitoring data. Using the proposed cloud architecture, a Wind Farm CMS is deployed in a virtual platform to monitor and evaluate the aging conditions of the turbine's major components in concurrent, yet isolated working environments.

• Journal of Biosystems Engineering
• /
• 제3권2호
• /
• pp.126-132
• /
• 1978

This study was carried out through the survey questionaries in order to get the information for proper operating technique of the two-wheel tractors which are widely used in the farm, and investigated various accidents which occurred during the operation of two-wheel tractors for farm works in 7 Provinces of Korea. The summarized results are as follows ; 1. Annual accident frequency of the two-wheel tractor was 2.07 times, and the average rate of accident was 0.72 times per hour. Its value was the largest in the pre-operations , and the smallest in the threshing operation. 2. The accident distribution according to each month was nearly propertional to the operating hours of the two-wheel tractor. More than 60 % of total accident was concentrated during the rice transplanting and harvesting season. 3. The careless accident was more than 50% of total accident , and inevitable accident about 18% . The rate of careless accident showed the highest in pre-operation such as engine starting, check, and adjustment, and belt change. 4. The serious wounded operator was 7.1 % to total wounded operator , and about 50 % of accident of casualties to operators occurred during haruling operations. 5. The amount of casualties to property was range of 1,000 to 10,000 won, and annual total amount per unit tractor could be estimated to be 10 , 000 won.