• 한국지역사회생활과학회지
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• 제21권4호
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• pp.619-631
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• 2010

The purpose of this study is to segment and examine urban farmers behavior by applying a two-step cluster analysis and multi-nominal logit model. The data were collected by a telephone survey with two-staged stratified random sampling in the cities around the country for the purpose of acquiring representative data. Respondents were asked to describe their awareness of urban agriculture, their agricultural activity, and sociodemographic characteristics. Among 2,000 cases, 381 cases(19.1%) which were of participants in urban agriculture were analysed in SPSS. From the findings, 27.3% of respondents had heard the word 'urban agriculture', and 25.5% of them regarded themselves as urban farmers. Four different clusters were derived from two-step clusters based on motive, place, companion, area and hours. They were 'Large scale hobby farming(cluster 1)', ‘Weekend farm/ hobby farming(cluster 2)', 'Land/ Self-supporting farming(cluster 3)', and 'Small scale hobby farming(cluster 4)'. The result of multinomial logistic regression showed that there were significant differences among these four segmented groups in terms of age, city size and housing type. In other words, there is quite a possibility that urbanites select different urban farming types according to their socio-demographic profiles. Therefore, the urbanite profiles can be used as the basis for promoting policy of several urban agriculture types. According to the result, policy directions for facilitating urban agriculture were presented.

• 농촌계획
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• 제19권1호
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• pp.109-122
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• 2013

The rapid rural urban migration and aging has generated an over-depopulation problems in rural areas since the 1980s. The purpose of this study constructs the marginal size of rural over-depopulated village through the analysis of the residential disparities such as farmer's ratio, basic life service accessibility, and levels of social and economic factors for each village community. This marginal scale could support evaluating diverse rural policies, which have been planned to apply to the rural development programs at the village level. The major challenges for over-depopulated villages are the lack of basic facilities, production infrastructures and inactive communities in the village. Therefore, the quantitative analysis of rural residential disparities according to rural village scale can provide the criteria for rural over-depopulated villages. We utilized Korea Agricultural Survey Data(2010) including specific residential condition of village level. The present study adopt multinomial-logit model for quantitative analysis of different village scales and decomposition techniques to separate the direct effect by the village scale factor from the endowment effects by regional or area characteristics, and residual effect by unknown factors. The present study found that the minimum scale of a rural over-depopulated village was 40 and 60 houses for the respective conditions of farmer's ratios less than 50% and greater than 75%. It was concluded based on the study findings that threshold scale could support evaluating the diverse rural policies, which have been planned to apply to the rural development programs at the village level.

• 정보화정책
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• 제28권1호
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• pp.64-76
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• 2021

본 연구는 개인정보처리자 관점에서 개인정보보호 활동에 영향을 미치는 요인을 확인하고, 개인정보처리자 스스로 보호 활동을 강화하기 위한 방안을 모색하는데 있다. 요인 탐색을 위해 보호동기이론을 바탕으로 위협평가와 대처평가요인으로 대표되는 주요 요인을 선정하였으며, 요인별 영향분석을 위해 다항로짓모형을 활용하였다. 분석결과, 소규모 개인정보를 보유한 영세 개인정보처리자는 스스로 개인정보 보호 활동을 수행할 수 있도록 보호조치 점검도구 등 시스템 및 기술지원과 인식제고를 위한 교육지원이 필요하다. 그리고 대규모 개인정보를 보유한 개인정보처리자는 예산 및 조세지원 등 개인정보 보호 강화를 위한 투자를 장려하며, 실무 중심의 전문교육 지원이 필요한 것으로 나타났다.

• 한국ITS학회 논문지
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• 제22권6호
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• pp.49-65
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• 2023

최근 전세계적으로 환경에 대한 관심이 커지고, 국제사회가 '탄소중립'을 선언하면서 '탄소'를 고려한 다양한 수단선택모형 연구가 실시되고 있으나, 탄소에 대한 개인성향을 반영한 연구는 미비한 실정이다. 따라서, 본 연구에서는 탄소저감형 이동수단(전동킥보드 등)을 포함한 대중교통 서비스로 SPT(Sustainable Public Transit)라는 새로운 수단을 제시하고, 수도권 통근자를 대상으로 실시한 SP(Stated Preference)조사를 활용하여 요인분석을 통해 응답자의 탄소에 대한 개인성향을 분석한 후, 다항로짓모형을 활용하여 SPT에 대한 수단선택모형을 구축하였다. 분석 결과, SPT 잠재선호에 영향을 미치는 요인으로 성별, 소득, 개인성향('새로운경로 탐색에 대한 열정', '수단간 환승 선호', '탄소저감지식', '탄소저감실천') 변수가 유의한 것으로 나타났다. 따라서, 본 연구는 수단선택모형 구축시 수단의 속성변수로 탄소배출량을 선정하거나, 탄소저감과 관련한 개인성향 변수를 구축했다는 부분에서 의의가 있다.

• Communications for Statistical Applications and Methods
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• 제12권2호
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• pp.313-322
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• 2005

In this paper, we discuss suppression for logistic regression model. Suppression for linear regression model was defined as the relationship among sums of squared for regression as well as correlation coefficients of. variables. Since it is not common to obtain simple correlation coefficient for binary response variable of logistic model, we consider cumulative logistic models with multinomial and ordinal response variables rather than usual logistic model. As number of category of a response variable for the cumulative logistic model gets collapsed into binary, it is found that suppressions for these logistic models are changed. These suppression results for cumulative logistic models are discussed and compared with those of linear model.

• 한국철도학회논문집
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• 제20권2호
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• pp.288-298
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• 2017

고속 및 일반철도 차량의 시스템이 다양화되고 성능 측면에서 상당한 기술발전에 이르고 있다. 통행자가 현재 인지하고 있는 철도 수단에 대한 시간 및 비용 개선에 따른 수단전환 특성을 분석하고 통행자들의 시간가치를 분석하고자 한다. 본 연구에서는 통행자의 수단선택 모형을 구축하고 개인의 선호다양성을 반영한 혼합로짓모형과의 비교를 수행한다. 또한, 도출된 모형에 의한 통행시간가치 추정을 통해서 분석의 타당성을 제시한다. 이에 본 연구에서는 대중교통 이용객 510여명을 대상으로 SP 조사를 통해 철도 차량 개선에 따른 철도의 통행비용 및 통행시간 변화에 따른 통행시간가치를 다양한 모형을 이용하여 제시하였다. 또한, 개인의 선호다양성을 반영한 다양한 모형 간 비교분석하였다. 본 연구를 통해 개인의 선호에 의한 한계대체율법을 통하여 철도의 통행시간가치를 추정함으로써 철도 사업에서의 통행시간 절감편익을 보다 정확하게 산정할 수 있다.

• Asian Journal of Innovation and Policy
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• 제8권1호
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• pp.122-140
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• 2019

Providing free primary care to everyone is an important goal pursued by many countries under universal health care programs. Countries like India need to efficiently utilize their limited capacities towards this purpose. Unfortunately, due to a variety of reasons, patients incur substantial travel and out-of-pocket expenses for getting primary care from publicly-funded facilities. We propose a set-covering optimization model to assist health policy-makers in managing existing capacity in a better way. Decision-making should consider upgrading centers with better potential to reduce patient expenses and reallocating capacities from less preferred facilities. A multinomial logit choice model is used to predict the preferences. In this article, a brief background and literature survey along with the mixed integer linear programming (MILP) optimization model are presented. The working of the model is illustrated with the help of numerical experiments.

• 한국산학기술학회논문지
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• 제17권6호
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• pp.469-481
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• 2016

최근 우리나라는 가족공동체의 해체 및 고령화 사회 진전, 주거문화의 변화로 1인가구가 급증하고 있어, 주거선택에 있어 일반 가구와는 다른 양상을 보이고 있다. 이에 1인가구 급증에 따른 주택시장의 변화를 진단하고 올바른 정책방향을 제시하는 방안 모색이 필요하다. 이 연구는 성인 1인 단독가구를 대상으로 이들의 주거점유형태에 영향을 미치는 요인이 무엇인지를 밝히고자 함에 그 목적이 있다. 분석은 한국복지패널 제 10차 조사자료를 이용하여 다항 로짓 모형을 통한 횡단면 분석을 실시하였으며, 그 분석 결과는 다음과 같다. 첫째, 20-30대 1인가구는 40대 이상보다 가구 및 주거특성이 더욱 열악하게 나타났다. 둘째, 20-30대 1인가구는 주택 점유형태를 선택할 때 영향을 미치는 가구의 특성은 40대 이상과 같은 특성에 대해서도 다른 방향의 결과를 보였다. 셋째, 20-30대 1인가구의 특성은 공공의 지원을 통해 개선의 여지를 보였다. 이 연구를 통해 정부의 주거 지원이 보다 더 다양한 방식으로 모색되어야 할 필요가 있음을 시사 해 주었다.

• 농촌계획
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• 제24권4호
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• pp.121-134
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• 2018

By using the raw data of the 2015 Agriculture, Forestry and Fishery Consensus that surveyed the farmers engaged in agriculture, forestry and fishery in 2015, this study investigated the effects of the characteristics of the farms in Gangwon-do on the utilization of the digital devices, which was classified into computers usage only, smartphones usage only, both computers and smartphones usage, and no digital device usage. This study used the Multinomial Logit Model for the above purpose. Moreover, the IIA(Independence of Irrelevant Alternatives) method of the Multinomial Logit Model was analyzed to be suitable. Upon the result of the analysis, when all the other variables were constant in the average, the probability of choosing both computers and smartphones increased by 0.02% as the family member living together with the farm owner increased by 1 person. In addition, the farms with agricultural machineries have 0.03% increased probability of using smartphones to sell their agricultural products, when compared with the farms without agricultural machinery. Moreover, for the farms with high sales profit of the agricultural products, the probability of using computers and the probability of using smartphones increased by 0.04% and 0.01%, respectively, and the probability of using both computers and smartphones increased by 0.02%. On the other hand, for the farms affiliated with the agricultural organization, the probability of using both computers and smartphones increased by 0.17%, and the probability of using only smartphones and the probability of using only computers increased by 0.16% and 0.15%, respectively. In case of selling to the National Agricultural Cooperative Federation(NACF), the probability of using smartphones increased by 0.11% if all other variables were to be constant in the average. In particular, the farms participating in the agriculture-related industries have 1.09% increased probability of using computers, have 0.92% increased probability of using smartphones, and 0.85% increased probability of using both computers and smartphones. Therefore, the implications suggested based on the results of the analysis are as follows. First, the farms' choices of the digital devices are made independently. Hence, the future agricultural industry business platform establishment should necessarily consider the types of farms' choices of the digital devices in the future. Second, since the usage of digital devices has a generally positive influence on the farm household income, digital education to improve farmers' ability to use the digital devices should be urgently provided in order to improve the farm household income in the farms in Gangwon-do. Third, because the digital devices used to sell agricultural products differ depending on the age of the farm owner, it would be desirable to target the younger generation of the farm owners rather than establishing the agricultural industry business platform for the farms in the aged farm villages. Fourth, it would be advisable for the future agricultural business platform to consider the characteristics of agricultural products sales source.

• 보건행정학회지
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• 제23권2호
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• pp.112-123
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• 2013

Background: Under the risk of financial sustainability of National Health Insurance, Korean government attempted a series of regulations over pharmaceutical prices. The first price-cut was implemented to the hyperlipidemial treatments, and the prices of statins were reduced on 15th, April in 2009. The purposes of this study are 1) to investigate the impact of this price-cut on pharmaceutical expenditure, and 2) to identify the factors associated with drug-switch among statins. Methods: Using the national patients sample data, this study conducted time series analysis on the expenditures, prices, and volumes of statin drugs. To understand the factors associated with drug-switch, the multinomial logit model was analyzed at the patients level. Results: The results of time series analysis demonstrated that the price-cut of hyperlipidemic medicines did not lead to the reduced expenditure, suggesting the increased volume was the major cause. The multinomial logit analysis identified the switch of healthcare provider as the significant factor that was highly associated with drug-switch, implying the physicians' preference was the major motivation of drug-switch. Conclusion: Without control of utilization, price regulation itself could not reduce pharmaceutical expenditure. This suggests that the pharmaceutical regulations should be implemented on the basis of understanding of provider behaviors. The findings of this study will form the first step for further empirical studies.