• The Korean Journal of Applied Statistics
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• v.22 no.4
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• pp.819-827
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• 2009

Kim et al. (2006) analyzed the donation data surveyed by Voluneteer 21 in year 2002 at South Korea using a Poisson regression based on the mixture of two Poissons and detected significant variables for affecting the number of donations. However, noting the large deviation between the predicted and the actual frequencies of zero, we developed in this note a Poisson regression model based on a distribution in which zero inflated Poisson was added to the mixture of two Poissons. Thus the population distribution is now a mixture of three Poissons in which one component is concentrated on zero mass. We used the EM algorithm for estimating the regression parameters and detected the same variables with Kim et al's for significantly affecting the response. However, we could estimate the proportion of the fixed zero group to be 0.201, which was the characteristic of this model. We also noted that among two significant variables, the income and the volunteer experience(yes, no), the second variable could be utilized as a strategric variable for promoting the donation.

• Korean Journal of Medicinal Crop Science
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• v.6 no.3
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• pp.232-238
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• 1998

To analyse the management and production of medicinal crops in Uisong region, cultural conditions and standard income of 147 farms were investigated. Location quotient of medicinal crops cultivated was high as following order ; Paeonia lactiflora > Cornus ofidnalis> Bupleurm falcatum > Anemarhena asphodeloides > Rehmannia glutinosa > Eucommia ulmoides > Paeonia suffruticosa > Angelica dahurica. The average cultivated area per farm was 1.92ha : 1.35ha of upland field, 0.56ha of paddy field. Distribution of agricultural land in each farm was average 10.2 fields in 3.1 locations. Ratio of labor input in the medicinal plant sector was 31.1 %. The number of medicinal crops cultivated was 36 species among 147 farms and 2.4 species per farm. Among the cultivated medicinal plant, peony (Paeonia lactiflora) was the most popular medicinal plant, which was cultivated in 30.72ha of 85 farms. Income from medicinal plants was high in order of Carthamus tinctorius, Polygonatum stenophyllum, Angelica genuilexa. Medicinal crops should be selected based on farm condition, risk level and price settlement in order to maximize productivity and income.

• Journal of Nutrition and Health
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• v.42 no.8
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• pp.691-701
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• 2009

This study was conducted to evaluate the dietary quality of school-aged children from low-income families in comparison with those from higher income families. The socio-demographic and anthropometric data and one day 24-hour recall dietary intake data of 1,782 school-aged children were used for analysis from the data of 2001 National Health and Nutrition Survey. The children whose family had monthly household income 120% or lower than the 2001 Minimum Cost of Living were classified into Low Income Group (LIG), and the others were classified into Higher Income Group (HIG). The consumption levels of the food groups of the Korean Food Guide as well as the general nutritional status based on their weight and height, energy and nutrient intake were compared between LIG and HIG in elementary (n = 989), middle (n = 432), and high (n = 361) school-aged children, respectively. LIG tended to have lower weight, height, and BMI than HIG, but the difference was significant only in the weight and the BMI of the middle school-aged children. The energy intake of LIG didn't differ from that of HIG, but LIG consumed a higher percentage of energy from carbohydrate and a lower percentage of energy from fat than HIG. Some micronutrient intake was lower in LIG than HIG in case of the elementary and the middle school-aged children. The average numbers of servings of milk dairy products and fruits consumed by LIG were significantly lower than those consumed by HIG in the elementary and the middle school-aged children, and they were less than the respective recommended serving. The average number of servings of meat fish egg beans consumed by LIG was lower than that consumed by HIG in the middle and the high school-aged children, and it was also less than the recommended serving. The results suggested that the diet of children from low-income families should be intervened by strategies different from the other children in order to improve the consumption level of milk dairy products, fruits, and meat fish egg beans.

• Korean Journal of Medicinal Crop Science
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• v.7 no.3
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• pp.177-184
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• 1999

This study was carried out to find growth characters and distribution of above and underground in natural crossed population of Paeonia lactiflora Pallas. Sprouting time was 1 April to 15 April, and distribution of stem length ranged from 21 to 80cm, and 3 to 18 in stem number. Distribution of root length ranged from 12 to 59cm, root number per plant was 73 to 4, root yield per plant was highly varied by 37 to 882g, and larger root above 750g was occupied by 7.1%. Paeoniflorin content was 1.9 to 10.29% and plants containing higher paeoniflorin was 14.3%. Root length and yield had highly positive correlation. Root diameter and stem length was also positively correlated.

• The Korean Journal of Applied Statistics
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• v.21 no.5
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• pp.845-854
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• 2008

Survey reports of election opinions consist of numerous cross-tabulations between socio-demographic variables and political opinions including preferred candidates. Since socio-demographic variables are related each other, duplicate interpretations arise. The aim of this study is twofold: The first is to separate the effects of socio variables such as education, occupation and income from the effects of demographic variables such as region, sex and age. The second is the visualization of multiple cross-tabulations in low-dimensional space by extended doubling technique of correspondence analysis. Survey researchers may get some help from this study to present their survey results more lucidly and visually.

• Proceedings of the Korean Society of Crop Science Conference
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• 2005.04a
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• pp.2-6
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• 2005

질병의 예방, 노화억제, 돌연변이 억제 등 다양한 생리활성을 나타내는 안토시아닌 색소 C3G가 다량 함유되어 있는 흑자색 유색미의 성분연구를 수행한 결과 9가지의 천연화합물을 분리하였으며, 그 중 항산화 기능이 매우 뛰어난 페놀성 화합물 oryzafuran을 최초로 분리 그 구조를 확인하였다. 또한 allantoin과 같은 알칼로이드도 쌀에서는 처음으로 분리하였다. 이러한 결과를 통해 흑자색 유색미는 식용이상의 역할을 수행할 것으로 판단된다. 아울러 이러한 성분의 정량분석 방법과 합성과 관련된 메커니즘, 성분의 약리적 기능, 유전자원 평가 등 산업화를 위한 체계적인 연구가 수행되어야 할 것이며, 더 나아가 고C3G, 저단백, 저알레그렌, 고불포화지방산 등과 같은 다기능성 유색미 품종을 육성 보급함으로써 국민보건 및 농가소득에 크게 기여할 것으로 판단된다. 특히 이와 같은 성분이 주로 분포하는 미강은 도정과정을 통해 대부분 제거되기 때문에 회수하기가 용이하고, 따라서 부산물로 발생하는 흰쌀을 식품가공분야에서 이용할 수 있어 산업적으로 가치가 매우 높다고 판단된다.

• The Science & Technology
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• v.8 no.7 s.74
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• pp.56-60
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• 1975

과학기술단체총엽합회 새마을 기술봉사단(회장 김윤기)이 추진해온 농어촌소득증대를 위한 1마을 1학기술자 기술결연 운동이 자표 140마을중 16개 마을이 결연을 마쳤고 14개 마을은 7월초에 결연이 확정되어 소기의 성과를 100% 완수하게 됐다.이들 126개 마을과 결연을 맺은 과학기술자들의 실태를 학위별로 분류해 보면 박사 24명(농박10,공박3,약박2,이박7,의박1,수의박1)석사19명 학사83명이다.그리고 현직은 대학교수직 80명,실업고등학교사 36명 기타 전문직 10명의 분포로 나타났다. 도별로 기술결연을 맺은 부락은 경기도12강원도 14,충청북도10,충청남도 10,전라북도13,전라남도25,경상북도21,경상남도19,제주도2,이다.결연자 및 마을은 다음과 닽다.

• Journal of Navigation and Port Research
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• v.28 no.6
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• pp.579-585
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• 2004

The data were collected from the water sports industries, resort owners, equipment manufactures and the associations. The inquiry and data collection were made by visiting the corresponding facilities. Based on these data, the plan for infra construction of water leisure sports were proposed.

• The Korean Journal of Applied Statistics
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• v.15 no.2
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• pp.415-421
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• 2002

Because most common assumption is normality in statistical analysis, testing normality is very important. We propose a new plot and test statistic to test for normality based on the modified Lorenz curve that is proved to be a powerful tool to measure the income inequality within a population of income receivers. We also compare the proposed test statistics with the W test (Shapiro and Wilk (1965)), TL test (Kang and Cho (1999)) in terms of the power of test through by Monte Carlo method. The proposed test is more usually powerful than the other tests except some case.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.10a
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• pp.63-66
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• 2003

남획에 의한 어자원 감소와 오염으로 인한 해양 환경의 변화, 그리고 주변국과의 어업협정 체결 및 수입 개방 조치 등에 의한 어업정책의 변경으로 어업인의 소득이 심각한 타격을 입게 되면서, 어획 성능이 우수하고 조업 방식이 간편하며 소요 경비가 절감되는 어구어법으로의 전환이 빠르게 진행되고 있는 실정이다. 삼중자망은 홑자망, 통발에 비해 조업방법이 간단하고 특별한 어로설비를 필요로 하지 않으며 우수한 어획성능을 가지고 있어 어업인들이 선호하고 있으나 심각한 자원 남획을 유발하는 어구이기 때문에, 삼중자망의 불법사용에 대한 규제와 단속을 지속적으로 실시하고 있다. (중략)