• Journal of agricultural medicine and community health
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• v.33 no.1
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• pp.27-36
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• 2008

=Objectives: This study was conducted to evaluate the diferences in Farmer's syndrome between greenhouse-melon farmers and rice farmers. Methods: The study included 160 residents, who lived in rural community. Of those subjects, 73 and 87 from June 1 to July 30, 2006. Respondents were interviewed by means of a structured questionnaire. Results: This study showed that greenhouse-melon farmers had a lower average age, shorter experience of farming, more working hours per day than rice farmers (p<0.05). n farmers was 38.4% respectively, the prevalence in rice farmers was 22.6%. There was statistically significant diference in the prevalence of Farmer's syndrome between greenhouse-melon and rice farmers (p<0.05). The most frequent symptoms among eight symptoms that constitute the Farmer's syndrome were lumbago, shoulder pain and nocturnal urination regardless of type of farming. But greenhouse-melon farmers had higher prevalence of muskuloskeletal symptoms, such as lumbago and shoulder pain, than rice farmers (p<0.05).Conclusions: These results showed that prevalence of Farmer's syndrome was more common in the tools which reduce physical burden and take a rest and exercise periodically during work in the greenhouse-melon farmers.

• Journal of the Korean GEO-environmental Society
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• v.7 no.6
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• pp.45-56
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• 2006

Recently, the more potential waste sites are being required as increasing the demand of better human life. But the construction of waste disposals has many restrictions because of lack of good quality clay and high cost of liners. So, in this study, we studied the liner materials to develop more cheaper soil liner that can be satisfied the environmental criterion for the coefficient of permeability and shear strength. A series of compaction test and triaxial (consolidation, permeability, and shear) tests were performed to obtain the optimized weight ratio of Bentonite-Soil mixture (B/S) including the least amount of bentonite. A series of soil tests were performed to acquire the appropriate weathered granite soil-bentonite mixture that is satisfied the environmental criterion of soil liner($k=1{\times}10^{-7}cm/sec$). At first, weathered granite soils were classified with four different particle-size soils, and B/S ratio was increased as 5% step for each particle-size. The test results showed that in case of weathered granite soil passing through No. 100 sieve, B/S=15% satisfied the soil liner criterion. The measured coefficient of permeability and the Chapuis's two equations were also compared. And a predicting equation for the coefficient of permeability was suggested, which is suitable for the mixture soil with the B/S ratio used in this study. The optimal weight ratio for the mixture soils used in this study was 15% in the both cases of permeability and shear strength.

• 한국HCI학회:학술대회논문집
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• 2007.02b
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• pp.136-144
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• 2007

1990년대 후반까지 줄곧 광고 시장 점유율 1위를 차지하던 신문광고가 2001년을 기점으로 광고 시장 점유율의 지속적인 하락세를 보이고 있다. 이는 인터넷과 같은 경쟁적인 뉴미디어가 급격히 성장하는 데 그 원인이 있을 뿐만 아니라, 신문의 광고효과를 산출하는 과학적 방법론이 부족하다는 데에도 그 원인이 있다. 이러한 문제의식에서 출발하여, 본 연구에서는 안구운동 추적(eyetracking)을 활용하여 신문광고의 노출효과를 측정했다. 이를 위하여, 기존 신문 구독자의 인구통계학적 분포에 따라 추출된 50명의 표본을 대상으로, 신문의 면내 광고별 체류시간을 헤드 마운트형 안구운동 추적기(head-mounted eyetracker)를 활용하여 측정했다. 실험 결과, 데이터의 95%가 기존의 주의-기억 단계를 따르는 순차적인 정보처리모델과 스타치 구독률 조사(starch readership reports) 결과와 안구운동 추적 결과와 일치했다. 하지만, 5%의 데이터가 주의와 기억 단계의 차이에 기인한 이월 효과(carry-out)로 순차적인 정보처리모델과 일치하지 않는 것으로 나타났다. 즉 5%가량이 광고를 보지 않았음에도 봤다고 표시했다. 또한, 기존에 스타치 구독률 조사와 같은 재인 측정 방법을 통하여 간접적으로 측정하였던 기존의 신문 광고 노출율(보통 30%)에 비하여, 직접 측정한 결과 60%에 달하는 광고 노출율을 보였다. 이는 기존의 인식과 달리, 스타치 구독률 조사가 단순 노출 정도가 아니라, 응답자의 선택적인 기억 결과를 측정한 것임을 보여준다. 이로써, 안구운동 추적을 활용한 노출효과측정은 기존에 스타치 구독률 조사에서 놓치고 있는 부분을 보완할 수 있는 기법임을 보여준다. 또한 이 기법에 의하여 도출된 노출율은 60%에 달하여 기존의 약30%로 제시된 연구결과들이 실제로 측정기법의 한계로 인하여, 기억이 가지고 있는 왜곡을 그대로 반영한 노출율에 관한 자료를 쓰는 것으로 나타났다. 본 연구에서 제안된 노출효과 측정방법론은 기존의 왜곡된 데이터를 보완하고, 신문 광고 시장의 과학적인 측정기법을 발전시키는 데 의미 있는 기여를 할 것으로 기대한다.

• Journal of the Korean association of regional geographers
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• v.20 no.3
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• pp.334-343
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• 2014

The number of malaria cases has been undulating for the past 10 years in Korea since the reemergence of malaria in early 1990's. Considering the spatial variations of malaria incidence across the northmost border areas near the demilitarized zone (DMZ), the occurrence of the disease seems to be influenced by the natural and human environment in the region. Malaria is an infectious disease that is transmitted to humans by the bites of vector-mosquitoes that carry malaria parasites, and its incidence rate depends on specific climatic and sociodemographic factors. This study found that the spatial characteristics of malaria incidence have varied depending on relative proportions of mosquito habitats, distance between mosquito habitats and human residence, the physical and sociodemographic environments of the city by urbanization, and local topography.

• Journal of the Korea Society for Simulation
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• v.29 no.1
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• pp.71-79
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• 2020

As the urbanization trend in modern society continues, the concentration of the population induces the urban problems in the residential area. One of the well-known issues among various urban problems is the garbage problem, which causes deterioration of the residential environment of citizens and directly affects the satisfaction of municipal administration. Such garbage problem cannot be accurately predicted by analyzing the amount of waste emitted from residential areas, but it is necessary to analyze the lifestyle and characteristics of residents living in residential areas. In this study, we propose an agent-based residential modeling and simulation environment using discrete event system formalism to analyze the garbage problem and satisfaction level according to the distribution of residents in the residential area. To model the behavior of the residents, we utilized the Atomic Model to capture the temporal behavior. Also, we used the Coupled Model to model the multi-family and the building to enhance the reusability of the simulation model. Also, this study carried out simulation modeling and simulation for a multi-family residential area. The simulation results of the multi-family housing area show that considering the characteristics of the residents gives better results compared to the simulation results without considering the characteristics.

• Journal of fish pathology
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• v.4 no.1
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• pp.23-30
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• 1991

This paper deals with the distribution of coliform group bacteria and the environmental factors in Suyeong Bay from November 1990 to February 1991. The ranges of environmental factors were as follows : Salinity 16.84~34.93%, Dissolved Oxygen $0.58{\sim}6.79m{\ell}/{\ell}$, COD 0.48~5.06 ppm, Nitrite $0.42{\sim}18.82{\mu}g-at/{\ell}$, Nitrate $0.50{\sim}53.23{\mu}g-at/{\ell}$, Ammonia $3.73{\sim}56.16{\mu}g-at/{\ell}$, Silicate $5.18{\sim}147.29{\mu}g-at/{\ell}$. The coliform group and fecal coliform group ranged $1.1{\times}10^2{\sim}2.4{\times}10^5/100m{\ell}$, $1.7{\times}10{\sim}3.5{\times}10^4/100m{\ell}$ each other. The ratio of TC/FC was 1.73~58.49 during study periods. Among the composition of coliform group, E. coli was dominent(64.4%), which was appeared all studying stations. E. coli I type was accounted for 97.4% in the E. coli.

• Journal of agricultural medicine and community health
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• v.28 no.2
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• pp.49-59
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• 2003

Objectives: This study was intended to provide basic data available for the establishment of comprehensive and systematic public medical service for older persons about their concurrent pathology and time span for their bedridden state, and thereby, the medical service, and individual cares they have received. Methods: The study subjects included 207 elderly residents of men and women aged over 65, who were in the bedridden state at home at the time of investigation in September of 2002 at 11 'Myon' in Kongju city, Chungchongnamdo Province. They were asked to respond to the questionnaires by using interviews at their homes. Results: Of the elderly population studied, the overall rate of bedridden states was 1.61%(1.46% in men and 1.71% in women) and there was an increasing tendency with age in both sexes. The causes for bedridden states indicated that hypertension and atherosclerosis accounted for 43.6 % of them in men, and lumbago neuralgia spinal disease 40.3% in women as the most frequent cause, respectively. The mean years of bedridden states were greater in men(4.81${\pm}$2.89) than women(4.98${\pm}$2.89). By age groups, both sexes showed an increasing tendency of time span with age. The items of care required for the bedridden showed that bathing was the most frequent and it was followed by toileting, dressing and feeding in a decreasing order of frequency. The number of care per one patient was 3.4 in men and 3.5 in women with the increased tendency with decreasing age Ain both sexes. Conclusions: Though the proportion of bed-ridden patients increased according to the increasing age, there are substantial limitations in reducing the prevalence of chronic diseases. Therefore, it is required to establish the appropriate measures, such as various resources of health care services for dealing with the steadily increasing rate of bed-ridden patients.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.29 no.1
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• pp.29-37
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• 2011

The purpose of this research is to measure Quality of Life indices using Factor Analysis and Principle Component Analysis and to analyze the spatial patterns of Quality of life distribution in the Seoul Metropolitan Area in terms of spatial association using spatial statistics and spatial exploratory technique. In order to check the degree of clustering, this study used spatial autocorrelation indices, global Moran's I index. In addition, local scale analysis was conducted using Moran Scatterplot and Local Moran's I to identify the spatial association pattern and the high Quality of life. The analysis based on global statics showed that, in the Seoul Metropolitan Area, QoL Indices had been distributed with positive spatial association. According to the local spatial statistics, the general tendency of clustering H-H clusters which were mainly concentrated on the Seoul, L-H clusters were concentrated on the Kyunggi-Do and L-L Clusters showed the regional extent of lagging behind. However, in case of H-H, L-H Clusters they had been spread out in the Newtown as population increase.

• The Korean Journal of Applied Statistics
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• v.30 no.3
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• pp.391-401
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• 2017

This study develops an indicator to manage regional variations of approval rates for long-term care (LTC) service. We used LTC insurance data for grade assessment that include 433,155 applicants from 227 LTC centers across Korea in 2015. The approval rate for each center was defined as the proportion of the numbers of approved applicants out of all applicants. We assumed that the approval rates depended on the characteristics of applicants. We estimated the 'standard' approval rates from a multiple linear regression analysis using the characteristics of applicants as independent variables. The difference between the observed and the standard rates was then defined as an indicator for deviation. A center having a large difference could be considered as a center with a potential error in grade assessment. We also examined if the characteristics of investigators affected the approval rates. We found that the socio-demographic characteristics of applicants and reapplication rate for LTC grade were independent factors affecting the approval rates. Centers having the management indicator values falling outside the middle 95% of the distribution were identified as centers with an error in grading. We expect that this study will contribute to enhancing reliability and equity in LTC grading.

• Journal of Digital Convergence
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• v.12 no.12
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• pp.457-467
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• 2014

The purpose of this study was to induce continuing health screening of the examinees of the health promotion centers by identifying reason of health screening, selection factors of health promotion center, satisfaction level for health promotion center and revisit intention for the examinees who have utilized the health promotion centers of hospitals in Busan and also understanding the examinees' preferences. This study has been conducted from 2, 22.~4, 5. 2013 with the 892 examinees who had utilized the 10 medical institutes in Busan. And the frequency, ${\chi}^2$-test, t-test, ANOVA, logistic regression was analysed. The summary of the study results is as follows. In terms of health screening type, those with office worker physical examination, those with revisit had the highest frequency whereas the group with no disease and the group of being healthy for subjective health condition had the highest frequency. As for the determination factors of health promotion center, accessibility, partnership work, acquaintance recommendation was found to be the highest and followed. And as for the satisfaction level of health promotion center, satisfaction level for accessibility and medical check-up was found to be the highest with 3.59 points, and followed by satisfaction level for brand name, facility, the economic cost. Finally, as for the revisit intention had the highest frequency. Based on the study results above it would be necessary to establish a reasonable price structure in revitalizing promotion and improving health program.