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Hye-seon Chae,Kan-woo Yoon,Kyung-suk Lee,Hyo-cher Kim 대한인간공학회 2011 대한인간공학회 학술대회논문집 Vol.2011 No.5
Introduction: This Study was conducted to obtain information regarding the farm work accidents in Korea. This survey will provide a statistics of farm work accidents biennially. Method: This household survey sample followed a multistage, stratified. All interviews were conducted face to face in the respondent's own household. Almost 5,000 household, 9,630 farm workers were interviewed, answering about their working condition and experience of farm work accident from January 1, 2008 to December 31, 2008. Results: Males(8.6%) suffered more injuries than females(2.9%) and the higher age was, the more injuries were reported. The incidence of farm work accident is most prevalent in from May to August(62.8%). Farm work accident showed a peak around 9-11am with further peak around 2-4pm. Major farm work accident place is paddy and field(65.7%), followed by farm road(10.2%). Slip on same level(27.1%) and weight lifting/transport(24.5%) is most common type of farm work accident, followed by fire/explosion(8.9%), struck against something fixed or stationary(6.9%), fall from a height(6.9%). Kinds of treatment in the farm accidents were self-treatment with 8.0%, medication with 13.5%, outpatient treatment with 45.9% and hospital treatment with 32.6%. Moreover 65.8% of all accidents were temporarily restricted in their work activity for at least four days.
Hye-seon Chae,Kan-woo Yoon,Kyung-doo Min,Kyung-suk Lee,Hyo-cher Kim 대한인간공학회 2012 대한인간공학회 학술대회논문집 Vol.2012 No.5
Introduction: This Study was conducted to obtain information regarding exposure levels of risk factors related to musculoskeletal systems by demographic and agriculture characteristics of farmers. Method: This household survey sample followed a multistage, stratified. All interviews were conducted face to face in the respondent's own household. Almost 6,006 household, 10,474 farm workers were interviewed. Results: Exposure of risk factors by posture and motion have the most work load in the waist(67%), hand/wrist(67%) and exposure of risk factors by lifting tasks showed 14% of serious risk and 26% of moderate risk. Exposure of risk factors by gender and age didn't show distinct differences and exposure of lifting tasks decrease with advancing age. Paddy, field, greenhouse, livestock have the most work load in the waist and wrist, followed by neck, knee but orchard have the most work load in the shoulder, neck and wrist.
PROTTER'S CONJUGATE BOUNDARY VALUE PROBLEMS FOR TWO DIMENSIONAL WAVE EQIATION
Jeon, Jong-Duek,Khe, Kan-Cher,Park, Ji-Hyun,Jeon, Yong-Hee,Park, Jong-Bae Korean Mathematical Society 1996 대한수학회지 Vol.33 No.4
In 1954 M. H. Protter [1] formulated the following boundary value problem as an analogue of the plane Darboux problem.
PROTTER'S CONJUGATE BOUNDARY VALUE PROBLEMS FOR THE TWO DIMENSIONAL WAVE EQUATION
Jeon, Jong Duek,Khe, Kan Cher,Park, Ji Hyun,Jeon, Yong Hee,Choi, Jong Bae 대한수학회 1996 대한수학회지 Vol.33 No.4
In 1954 M. H. Protter [1] formulated the following boundary value problem as an analogue of the plane Darboux problem. PROBLEM D_0. Find a solution u(x, y, r) of the equation (1) (∂^2/∂_x^2+∂^2/∂_y^2-∂^2/∂_r^2)u(x,y,r)=0 in the domain Q : 0 < r < p ≡ √x^2+y^2 < 1-r such that u ∈ C(Q)∩C^2(Q) and (2) u|K_i=ψ_i, i=0,1 where ψ_i, i=0,1 are given functions, the conic surface K_0 : 0 <p = r < 1/2 and the circle without the center K_1 : r =0, 0<p<1.
고품질 농업인 업무상 질병 및 손상조사 수행을 위한 연구
박진우 ( Jin Woo Park ),윤간우 ( Kan Woo Yoon ),채혜선 ( Hye Seon Chae ),김효철 ( Hyo Cher Kim ),이경숙 ( Kyung Suk Lee ) 한국조사연구학회 2013 조사연구 Vol.14 No.2
While Korean agricultural statistics are mainly focused on economic indicators such as population, income, yields, etc., it is lack of indicators relating to welfare of farmers. Specially, the statistics related agricultural occupational disease and injuries were not produced until now. The goal of this study is to devise a strategy to guarantee the quality of the survey statistics to perform for Korean agricultural occupational disease and injury statistics. The survey used a stratified multistage cluster sampling design and adopted the face-to-face interview method. We introduce some practical activities to assure the survey quality and show specific survey quality numbers, such as sample substitution rate, response rate, number of input errors, number of logical errors, etc.