• Journal of Biosystems Engineering
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• v.37 no.3
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• pp.140-147
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• 2012

Purpose: This study was conducted to understand the work performance of crank-type rotavators and compare them with those of rotary-type rotavators in Korean farmland conditions. Methods: Tillage operations were carried out using both rotavators with the same nominal rotavating width and rated power. During the operations, PTO speed and torque, actual work speed, and rotavating width and depth were measured. To evaluate work performance, pulverizing ratio, inversion ratio, and specific volumetric tilled soil were calculated and compared for each rotavator. Results: It is found that the crank-type rotavator has better specific volumetric tilled soil performance and deep tillage, while the pulverizing ratio is worse. Conclusions: Crank-type and rotary type rotavator have diffenent properties each other in several work performances. It's important, therefore, to choose a suitable type of rotavator that satisfy the farmer's requirements in accordance with the condition of field and the purpose of tillage operation.

• Korean Journal of Agricultural Science
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• v.42 no.3
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• pp.277-283
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• 2015

This study aims at analyzing determinants of non-farming income activities of female farmers, and presenting how to support their participation in non-farming activities. The result of logistic regressive analysis whose subjects are female farmers in the Chungnam area indicates that human and economic capital variables that can predict non-farming income activity participation statistically significantly are persons at the age of 40s to 50s and female farmers who returned to the rural areas. Farming characteristic variables are households that receive subsidiary and participate in two different types of farming whose main farming is rice. The female farmers who spend longer hours doing household chores participate in non-farming income activities more actively. In terms of policy and on-site response variables, the interest in farming and farming businesses shows positive relation, and that of farming and community organization participation presents negative relation. These analysis results indicate that the local government must present the policy that can select non-farming income activity participation groups strategically. This study suggest that it is necessary to expand community centered-non-farming income activities, and to expand or make laws to support female farmer's participation in non-farming activities.

• Korean Journal of Oriental Medicine
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• v.3 no.1
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• pp.279-287
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• 1997

Clinical studies were done on 80 persons who were treated with the acupuncture theraphy frozen shoulder. The following results are obtained. 1. Distribution of sex: male(28 persons), female (52 persons). 2. Causes of illness: work(40 persons), unknown origin(32 persons). 3. Duration of illness: less than 1 month(28 persons), 1-3 month(22 persons), 3-6 months(20 persons). 4. Distribution of occupational: housewife(30 persons), unemployed(22 persons), farmer(16 persons). 5. Distribution according to number of times of treatment rate: 3 weeks(32 persons), 2 weeks(14 persons), 4weeks(10 persons). 6. The classification of abduction disturbance before treatment were Gl group 14 persons, GII group 46 persons, GIII group 20 persons. After treatment were GI group 41 persons, GII group 30 persons, GIII group 9 persons. 7. The classification of HBST disturbance before treatment were GI group 10 persons, GII group 51 persons, GIII group 19 persons. After treatment were GI group 39 persons, GII group 28 persons , GIII group 13 persons. 8. The classification of MWT disturbance before treatment were GI group 25 persons, GII group 37 persons, GIII group 18 persons. After treatment were GI group 44 persons, GII group 25 persons, GIII group 11 persons.

• Journal of Agricultural Extension & Community Development
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• v.4 no.1
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• pp.97-120
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• 1997

This study intends to develop a computer software for an efficient swineherd production and management. Current softwares are concerned on the sow management and ignore the actual farm environment. This study focuses on the farm environment in developing the software and covers the production management financial management, marketing management, and business planning for swineherd farm. The FSR(Farming Systems Research) analysis and interview survey aye applied to collect the data for the system planning, farmer's demand and analysis on the system, system design and program development. The systems are designed to meet the needs for the progressive swineherd farmers. Visual FoxPro 5.1 is used to develop the system. The developed system includes pig farm financial records keeping and management, pig farm production management program, pig farm marketing management program, and pig farm business diagnosis and planning program to meet the scope of the study. The weekly maintenance records and financial records are adopted for the input interface since most of farmers use their computer less than 5 hours a week. Pulldown Menu systems are adopted and designed for easy use by structuring to meet the pig farm and system demands. The manu system allocates the input-output screen based on the sectors, scopes, users, frequencies, importances, and the usages of the information. The GUI(Graphic User Interface) method is used to develop input-output screens for easy use. Backward Chaining mechanism fo the Expert System is used in the diagnosis of the pig farm management and the Systems Simulators Approach is used in the pig farm management planning.

• Korean Journal of Agricultural Science
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• v.33 no.2
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• pp.129-140
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• 2006

There are need to develop of merchandise of value added fresh ginseng because of high consciousness level of consumer and enlarge of markets for high quality products. The fresh ginseng after harvest was distributed to farmer partually but in general, it was to market by consigner or wholsaler directly after harvest. There were a high difference on storage period of fresh ginseng in different harvesting seasons. The reduction of value of commodities of fresh ginseng for storage period was caused by decomposition and tender of tissue. The storage temperature was under the freezing point and the packing method was sealing tightly by plastic film. As the quality of fresh ginseng was defined by naked eye, it was difficult to sort the quality of ginseng directly harvest.

• Journal of the Korean Society for Precision Engineering
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• v.19 no.4
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• pp.101-108
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• 2002

A specially-built EMM (Electrochemical Micro Machining) / PECM (Pulse Electrochemical Machining) cell, a electrode tool filled with non-conducting material, a electrolyte flow control system and a small & stable gap control unit are developed to achieve accurate dimensions of recesses. Two electrolytes, aqueous sodium nitrate and aqueous sodium chloridc arc applied in this study. The farmer electrolyte has better machine-ability than the latter one because of its appropriate changing to the transpassive state without pits on the surface of workpiece. It is easier to control the machining depth precisely by micrometer with pulse current than direct current. This paper also presents an identification method for the machining depth by in-process analysis of machining current and inter electrode gap size. The inter electrode gap characteristics, inc1uding pulse current, effective volumetric electrochemical equivalent and electrolyte conductivity variations, are analyzed based on the model and experiments.

• The Journal of Korean Medicine
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• v.17 no.2 s.32
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• pp.418-426
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• 1996

Clinical studies were done 23 peoples who were treated with the auricular acupuncture therapy to the hypertension in the Dept. of the Acupuncture and Moxibution Hospital of Oriental Medicine in Won Kwang University. The following results have obtained. 1. Distribution of sex: male (52.0%), female (48.0%), 2. Distribution of age: 50s age group (30.0%), 70s(26.0%), 40s or 60s(22.0%). 3. Distribution of occupation: housewife (26.0%), farmer or commerce(22.0%), unemployed(13.0%), 4. Causes of illness: unknown origin(61.0%), stress(17.0%), drinking (13.0%), 5. Distribution according to symptom: headache(57.0%), non-symptom(17.0%), dizziness(9.0%). 6. Duration of onset: 3-5 years(26,0%), unknown(17.0%), 6 months, 5-10 years or 10 years (13.0%). 7. Cure rate of auricular acupuncture treatment according to differentiation symptoms: HLY(43.0%), DLK(30.0%), DYY(13.0%), HYD(9.0%). 8. Result grade on $pr{\`{e}}-freatment$ of auricular acupuncture: Grade I(4.0%), GradeII(52.0%), Grade III(43.0%). Result grade on post-treaftment auricular acupuncture: Grade O(48.0%), Grade I(26.0%), Grade II(26.0%).

• Plant Resources
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• v.1 no.1
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• pp.26-32
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• 1998

This paper describes the variations in eight agronomic traits in three unadapted local landraces and an inbred cultivar of corn. To compare the agronomic traits in field evaluation with molecular marker evaluation the genotypes of the plant introduction were also checked by 4 microsatellite-SSR loci. The variations of the eight agronomic traits were higher in the local landrades than in the inbred line. which was substantiated by the high genetic variation in the landrades with microsatellite-SSR loci. The level of genetic variation was also different between landraces. Since the genetic evaluation can be easily quantified by the analysis of microsatellite-SSR loci. the threshold level of genetic homogeneity in the population for parental lines in breeding program can be determined and the effort of maintaining the landrace population would be alleviated. As an example in our analysis. the entry from Whachon should not need the same number of selfing generations as the other two landraces to get the level of inbred state. Since this line showed lowest intra-genetic variation within the population.

• Journal of Agricultural Extension & Community Development
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• v.18 no.3
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• pp.569-590
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• 2011

The purpose of this study is to examine the local farmers' perceptions toward the use of local food for school meals from the suppliers' perspectives. Data was collected from 12 school-meal management centers which provide the name list of local farmers. from the provided list, 167 people were selected, who were asked to answer the self-administerd questionnaires by post. 87 responses were returned, having shown the response rate was 50.1%. The data were analyzed by using SPSS 15.0 for descriptive analysis. The findings from this study are as follows: First, the local farmers has a positive attitude toward certified and supply methods for local food whereas price and selling quantity of local food were dissatisfying; Second, local farmers prefer to use public supplying chains such as school-meal support centers rather than private ones. Furthermore, they like to directly contact with a school in terms of supplying local food. To establish self-selling systems, computer programs like ERP should be adopted to effectively manage the production process of local food. On conclusion, implications and limitations were discussed.

• Korean Journal of Medicinal Crop Science
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• v.19 no.4
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• pp.246-250
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• 2011

This study was carried out to investigate the characteristics of Rhizome rot incidence of Platycodon grandiflorus by cultivation period and ridge width and furrow depth. The three types of ridge width 0.8, 1.0, and 1.2 m and several levels of furrow depth and 6 levels cultivation period. This experiment was done in farmer's farm and the treatments were also classified in the same spot. In this investigation, ridge width, soil water content, soil hardness, and cultivation period were positively related with Rhizome rot incidence, however, furrow depth was negatively related with that. So this experiment could draw a conclusion : excess water damage and soil hardness could directly or indirectly effect on the Rhizome rot incidence, so cultivation method should be developed such as making underground ditch or cultivation in well draining soil for escaping excess waster damage.