• Journal of The Korean Society of Agricultural Engineers
• /
• v.65 no.2
• /
• pp.13-20
• /
• 2023

In the past, the Ministry of Agriculture, Food, and Rural Affairs (MAFRA) conducted research into and production of agricultural statistics. As a result of organizational changes, these responsibilities were transferred to Statistics Korea in 1998 and 2008. So, the MAFRA managed data without a formal system for managing data and statistical information. The demand for a foundation to improve the usefulness of agri-food statistics has recently increased due to the necessity for basic data representing the realities of rural and agricultural areas. This is especially true for field-oriented agricultural administration. This study aims to propose a strategy for the systematically integrated administration of dispersed data and statistical information. It served as the foundation for the integrated management of distributed administrative and statistical data.

• Journal of the Korean Data and Information Science Society
• /
• v.9 no.1
• /
• pp.57-62
• /
• 1998

The minimum number of samples for the measurement of plant characteristics of major crops were calculated from the data obtained from the field experiments on rice, barley, wheat, soybean and sweet potato conducted by Kyungpuk Rural Development Administration.

• The Korean Journal of Pesticide Science
• /
• v.14 no.2
• /
• pp.110-115
• /
• 2010

The aim of this study is to investigate the exposure assessment of Korean consumers to five neonicotinoid pesticides in fruit vegetables cultivated in Korea, using a probabilistic approach. We used five neonicotionid pesticides residues(acetamiprid, clothianidin, imidacloprid, thiacloprid, thiamethoxam) data in fruit vegetables reported by Rural Development Administration for the 2009 monitoring programme. Total exposure of five neonicotinoid pesticides for Korean consumer ranged from 0.087 to 0.236 ${\mu}g$/kg/day at the $95^{th}$ percentile. The $95^{th}$ percentile values of total exposure of five neonicotinoid pesticides by probabilistic approach were lower than those by deterministic approach, although mean values of total exposure by probabilistic approach were similar with those of total exposure by deterministic approach. Total exposure to acetamiprid residue may be mainly due to the exposure to acetamiprid through the consumption of strawberry. Also, acetamiprid residues in strawberry were considered as much more contributory factor to total exposure of acetamiprid than consumption data of strawberry. This contributory properties of acetamiprid were similar with those of all other neonicotinoid pesticides, excluding thiacloprid.

• Journal of the East Asian Society of Dietary Life
• /
• v.20 no.6
• /
• pp.853-862
• /
• 2010

This study was conducted as a nationwide project in order to obtain data on the content and intake of sodium in school meals. For this purpose, we selected two elementary and two middle schools in Daejeon as well as four elementary schools in the Chungcheong area. We measured the sodium and potassium contents of 842 dishes as well as their intake levels over 154 days. Sodium content was analyzed using an AAS (Atomic Absorption Spectrometer). The average meal intakes of second and fifth grade elementary school students were 244 g/meal and 304 g/meal, respectively. The meal intake of middle school students was 401 g/meal. Boys tended to eat slightly more than did girls, and students tended to eat more in the spring than in the summer. The average sodium intake per meal was 642 mg (570 mg by elementary school students, 1068 mg by middle school students), which was 32.1% of the UL (Tolerable Upper Intake Level, 2,000 mg per day) according to the KDRIs (Dietary Reference Intakes for Koreans). The sodium intake per meal was not significantly differ between boys and girls or between spring and summer (p>0.05). This study provides fundamental data that can be used to establishment a nutrition policy concerning the adequate content of sodium in school meals.

• Korean Journal of Food Science and Technology
• /
• v.34 no.6
• /
• pp.1103-1109
• /
• 2002

Mean concentration and daily intake of sorbic acid were estimated through the analysis of food samples obtained from Korea FDA and food sanitation inspection agency during $1999{\sim}2000$. Total number of samples were 14,129, among which the number of detected samples were 2,561 (detection rate was 18.13%). Contribution rate to total estimated daily intake (%) of sorbic acid in the categorized food were the highest in processed fish product. Total estimated daily intake $({\Sigma}EDI)$ for age groups were the highest in $30{\sim}49$ years old and ranged from 3.42 to 9.25 mg/person/day. Estimation of average food intake for each food item per person per day was based on data in national nutrition survey and national food disapperance data in 1998. Total estimated daily intake of sorbic acid was 20.40 mg per body weight of 55 kg. This value was 1.48% of acceptable daily intake evaluated by FAO/WHO and 33.03% of theoretical maximum daily intake.

• The Journal of Fisheries Business Administration
• /
• v.48 no.3
• /
• pp.47-59
• /
• 2017

Fish mortality is the most important success factor in aquaculture management. To order fingerlings considering the effect of mortality is a important problem in aquaculture farm. This study is aimed to decision the number and size of fry in aquaculture farm. This study build the mathematical model that finds the value of decision variable to minimize total cost that sums up the fingerling purchasing cost, aquaculture farm operating cost and feeding cost under mortality constraint. The proposed mathematical model involve biological and economical variables: (1) number of fingerlings (2) fish growth rate (3) mortality (4) price of a fry (5) feeding cost, and (6) possible order period. Numerical simulation model presented here in. The objective of numerical simulation is to provide for decision makers to analyse and comprehend the proposed model. When extensive biological and cost data become available, the proposed model can be widely applied to yield more accurate results.

• Journal of Agricultural Extension & Community Development
• /
• v.8 no.2
• /
• pp.245-261
• /
• 2001

The consulting industry had enjoyed growth rates over the past 20 years which show no signs of slowing in their momentum. Since 1995, it began to discuss institutionalization of consulting in the agricultural sector in Korea. Rural Development Adminstration has launched farm management consulting project by means of benchmarking for farming innovation in 1988, which consists of establishing consulting team, developing standard diagnosis form of sixty crops and materials, training consultants, having various public relations, and making information systems. Until October, 2001, sixty seven thousands of farmers have benefited on this project. It is now appreciated as a alternative for new agricultural extension approach. Analyzing the changes of farm management practice level through consulting shows improvement, which data have been stored in web database. It is expected that farm management consulting project be main stream of agricultural extension in this country.

• Journal of the korean society of oceanography
• /
• v.39 no.1
• /
• pp.35-45
• /
• 2004

Based on the MASNUM wave-current coupled model, the temperature and salinity structures along $36^{\circ}N$ in the Yellow Sea are simulated and compared with observations. Both the position and strength of the simulated thermocline are similar to data analysis. The wave-induced mixing is strongest in winter and plays a key role in the formation of the upper mixed layer in spring and summer. Numerical experiments suggest that in the coastal area, wave-induced mixing and tidal mixing control the vertical structure of temperature and salinity.

• Mycobiology
• /
• v.38 no.4
• /
• pp.323-327
• /
• 2010

This study contains descriptions and illustrations of three new and noteworthy taxa of the genus Psathyrella from Korea. Among them, Psathyrella pervelatoid, P. koreana, and P. utriformcystis are new to science. All collections cited here are deposited in the Herbarium Conservation Center of National Academy of Agricultural Sciences.

• Korean Journal of Veterinary Research
• /
• v.26 no.1
• /
• pp.93-96
• /
• 1986

The prevalence of antibody to Getah virus was serologically followed among those horses in Korea. Blood samples were taken from 575 horses in February and 462 horses in September, 1985. Overall percentage of horses with seropositive to Getah virus was 37% in February and 47% in September. The data suggest that the Getah virus infection is endemic in Korea and the increase in prevalence may be associated with the seasonal activity of arthropod vectors. This entails preventive precautions of the horses against this viral infection before the entry into Korea.