• Title/Summary/Keyword: logit model

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Analysis on User's Willingness to Pay for Value Measurement of Planned Infrastructure in the Settlement Zone - Around the District Unit Plan of the Settlement Zone in Cheongju-city - (취락지구의 계획기반시설 가치 측정을 위한 사용자 지불의사 분석 - 청주시 자연취락지구 지구단위계획을 중심으로 -)

  • Yun, Ki-Bum;Hong, Eui-Dong;Hawang, Hee-Yun
    • Journal of Korean Society of Rural Planning
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    • v.19 no.4
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    • pp.1-15
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    • 2013
  • The purpose of this study is to quantitatively analyze the corresponding residents' benefit to get in the future from the district unit plan of the settlement zone by Cheongju local government. The target districts were selected as Gumdeong-gol district, Juseong district, and Shinmok-gol district, and Hyeonam district which had recently set their district unit plans. Specific targets to be analyzed were some infrastructure including roads, parking lots, parks and others. Using the analysis methods of the Logit model and non-parametric test approach, this study estimated to the average amounts to be willingly paid(WTP) by the residents in targeting settlement zones and tested the reliability of the average amounts of WTP. The results of analysis were as follows. First, it was found that the WTPs for infrastructure under 1st influence area in target districts were estimated as 5,233won for road, 2,826won for parking lot, and 3,705won for park respectively. For the WTPs for infrastructure under 1nd area were estimated as 4,910 won for road, 2,242won for parking lot, and 3,620won for park respectively. Second, as the result of calculating the non-parametric WTP which built the 95% confidence interval, it was found that the all WTPs except the WTP for parking lot were fell into the 95% confidence interval. Third, as the result of calculating yearly total sum of benefits that the residents would get from the 1st influence area and the 2nd influence area, it was found that Gumdeong-gol district were expected to get 62,376,472won-amounted benefits, and Juseong district, and Shinmok-gol district, and Hyeonam district would get 35,0778,016won, 26,886,560won, and 22,252,032won respectively.

Solution Methods for OD Trip Estimation in Stochastic Assignment (확률적 통행배정하에서 기종점 통행량추정 모형의 개발)

  • Im, Yong-Taek
    • Journal of Korean Society of Transportation
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    • v.24 no.4 s.90
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    • pp.149-159
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    • 2006
  • Traditional trip tables are estimated through large-scale surveys such as household survey, roadside interviews, and license Plate matching. These methods are, however, expensive and time consuming. This paper presents two origin-destination (OD) trip matrix estimation methods from link traffic counts in stochastic assignment, which contains perceived errors of drivers for alternatives. The methods are formulated based on the relation between link flows and OD demands in logit formula. The first method can be expressed to minimize the difference between observed link flows and estimated flows, derived from traffic assignment and be solved by gradient method. The second method can be formulated based on dynamic process, which nay describe the daily movement patterns of drivers and be solved by a recursive equation. A numerical example is used for assessing the methods, and shows the performances and properties of the models.

The Determinants of the Use of Opportunistic Screening Programs in Korea (민간검진 서비스의 이용현황과 결정요인)

  • Kang, Sung-Wook;You, Chang-Hoon;Kwon, Young-Dae
    • Journal of Preventive Medicine and Public Health
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    • v.42 no.3
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    • pp.177-182
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    • 2009
  • Objectives : Both organized and opportunistic screening programs have been widely used in Korea. This paper examined the determinants of the use of opportunistic screening programs in Korea. Methods : The subjects were a national stratified random sample of 10,254 people aged 45 or older from the first wave of the Korean Longitudinal Study of Ageing in 2006. A logit model was used to examine the determinants of the use of opportunistic screening programs in terms of the demographic and socioeconomic characteristics, the type of health insurance and the health status. Results : Thirteen point seven percent of the individuals received opportunistic screening programs within 2 years from the time the survey was conducted in 2006. The individuals who graduated from college or who had even more education were 3.0 times more likely to use opportunistic screening programs compared with the individuals who were illiterate. The individuals who resided in urban areas and who had religious beliefs were more likely to receive opportunistic screening programs compared with their counterparts. Those who were in the first quartile for the total household assets were 2.6 times more likely to use opportunistic screening programs than those who were in the fourth quartile for the total household assets. Privately insured people were 1.6 times more likely to use opportunistic screening programs than those who were not insured. Finally, the individuals who self-assessed their health status as worst were 2.1 times more likely to use opportunistic screening programs compared individuals who self-assessed their health status as best. Conclusions : This study suggests that opportunistic screening programs can be an indicator for whether or not an individual is among the advantaged group in terms of their socioeconomic characteristics and type of health insurance.

Locational Characteristics of Recycling Industries (재생용 사업의 입지적 특성)

  • Han, Ju-Seong
    • Journal of the Korean association of regional geographers
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    • v.10 no.4
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    • pp.775-786
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    • 2004
  • Establishments of wholesale of recycling materials are located in the region where an amount of recyclable wastes generated as artery industry developed and the region of rather many population. And they are located not in underpopulated area as noxious facilities, but located in the non-residential area of many population regions in the whole country. Also, establishments of recycling of metal wastes and scrap, and non-metal wastes and scrap are mainly located in the peripheral region of metropolitan cities, regional centered cities, and adjacent regions of industrial area, because of high coefficient of localization, and agglomerated effects of production. The factor influencing the location of recycling industries is deeply connected with the location of wholesale of recycling materials, and thus, the transportation costs to carry recycling materials from supplied regions to plants are important but population is not so important.

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Factors Associated with Preparation for Turnover in Youth Employees: a Pooled Analysis of Data from the Youth Panel 2007-2013 (청년 취업자의 이직 준비 관련 요인: 청년패널 2007-2013 자료 분석)

  • Kim, Kyoung-Beom;Lee, Ju hyun;Noh, Jin-Won;Kwon, Young Dae
    • The Journal of the Korea Contents Association
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    • v.16 no.12
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    • pp.480-491
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    • 2016
  • This study aims to determine the factors associated with preparation for turnover in youth employees, using a data from the Youth Panel 2007-2013. Study population were composed by 17,037 employees and a generalized estimating equations (GEE) using panel logit model was performed. It was identified that socioeconomic(age, sex, level of education, monthly income and type of employment) and work-related factors(perception of difficulties in performing tasks compared to level of education, perception on the Job-Major match, stabilization of employment, autonomy and empowerment of jobs, peer relationship in workplace) were statistically significant variables. Based on the analysis, dissatisfaction on working environment or condition might lead to employees prepare to turnover and it is a series of activities that to improve welfare and find a suitable job for oneself.

Consumer's Recognition on Naturally-Grown Forest Products (자연산 임산물에 대한 소비자 인식)

  • Min, Kyung-Taek;Koo, Ja-Choon;Kim, Myeong-Eun
    • Journal of Korean Society of Forest Science
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    • v.104 no.4
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    • pp.668-676
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    • 2015
  • The objective of this paper is to elicit some policy implications to promote agroforestry in South Korea from the consumers' perspective. We conducted internet survey to 640 urban households about the recognition of forest farming products. Consumers purchased forest farming products for their nutrition, medical function, and safety and regarded them as higher quality than crops cultivated from agricultural land. Consumers preferred forest farming products but revealed no difference in recognition of naturally-grown products. Consumers buying forest products prioritize the quality and medical function among attributes. Among consumers as their income increases, they regard naturally grown products more important than price and freshness. Therefore, to promote agroforestry in South Korea, certification for naturally-grown products to win the consumers' trust and the $6^{th}$ industrialization by combining experience and green tourism program must be considered.

Drivers' Dynamic Route Choice Mechanism Analysis under ATIS Environment Using WATiSim (WATiSim을 활용한 운전자의 실시간 경로선택 분석)

  • Lee Chungwon;Kwon Byungchul
    • The Journal of The Korea Institute of Intelligent Transport Systems
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    • v.1 no.1
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    • pp.52-57
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    • 2002
  • A simulation tool for an optimal ATIS design and drivers' dynamic route choice behavior analysis is developed, which is applicable to urban networks. Due to the difficulty to make drivers feel the time pressure according to traffic conditions, current SP questionnaire survey type surveys have a limitation to capture correct driver reactions to real-time traffic Information provision. The simulator Is a web-based upgraded version, named WATiSim (Web-based ATIS Simulator), to quickly perform a wide population survey with a minimal cost using INTERNET Furthermore, the time pressure issue is lessened by its interface and simulation modules. After WATiSim mimicked a VMS based ATIS in a partial network of Seoul Metropolitan, reactions of drivers to various traffic conditions were surveyed through INTERNET and analyzed using a logit model. Drivers under the ATIS environment clearly understood the provided traffic information, and their reactions were closely related to traffic conditions, scheduled delay, trip purposes as well as toll charge if any.

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Consumption Experience of Vitamin/Mineral, Aloe, Calcium, Red Ginseng and Glucosamine (건강기능식품에 대한 소비경험과 영향요인: 비타민/미네랄, 알로에, 칼슘, 홍삼, 글루코사민을 대상으로)

  • You, So-Ye;Yin, He Ying
    • The Korean Journal of Community Living Science
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    • v.22 no.2
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    • pp.223-234
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    • 2011
  • The purpose of this study was to explain consumption experience of vitamin/mineral, aloe, calcium, red ginseng and glucosamine. It also explains influencing factors such as health related factors(importance of healthy eating, perceived role of food for health, health motivation), consumer attitude of healthy functional foods(reward from using healthy functional foods, confidence in functional foods) and individual characteristics(age, sex, education, income) on them. To do this, LIMDEP program was applied to estimate the logit model. The results of this study were as follows: 1) The levels of health motivation, reward and confidence from using healthy functional foods were found to be relatively low, while the levels of importance of healthy eating and the perceived role of food for health were found to be relatively high. It might imply that consumers would have some interest for health and food consumption. Also consumers expressed to have some experience for vitamin/mineral(50%), aloe(16%), calcium(23%), red ginseng(40%) and glucosamine(17%). 2) For influencing factors, age was found to be significantly influential to all of the products. If consumers were getting older, they were more likely to consume the products. In addition, reward from using healthy functional foods was found to significantly influence consumption experience of vitamin/mineral and calcium. If consumers perceived more reward from using vitamin/mineral and calcium, they were more likely to consume the products. For aloe, confidence in healthy functional foods was found to significantly influence consumption. Furthermore, sex was found to be a significant factor for consumption of vitamin/mineral.

Market Structure and Standardization -An Empirical Study on Collective Standards in the Korean Industry- (시장구조와 표준화 - 우리나라 산업의 단체표준에 대한 실증적 연구-)

  • Sung, Tae-Kyung
    • Management & Information Systems Review
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    • v.33 no.4
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    • pp.63-75
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    • 2014
  • The paper investigates empirically the determinants of standardization activity at the industry level, focusing on market structure. The enactments or amendments of collective standards is used as the proxy variable for standardization activity. The independent variables, in addition to market structure, are technological opportunity, factor intensity, export ratio, and industry characteristics(assembly). We estimated the logistic regression model(so-called Logit), using the pooling data for 9 Korean industries, including foods, textiles, chemicals, nonmetallic minerals, metals, electronics and electrics, machinery, automobiles, and shipbuilding, over 2006-2009. The empirical finding shows that market structure has no any effects on the enactments or amendments of collective standards in Korea. This might infer that oligopolistic firms devote themselves to de facto standards determined by market rather than de jure standards such as collective standards and Korean Standards(KS). Besides market structure variable, whereas technological opportunity and assembly characteristics are likely to relate positively with the enactments or amendments of collective standards, capital intensity and export ratio have no any relationship with industrial standardization, respectively.

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An Investigation of Factors that Influence the Usage of Knowledge Management System in Public Sector - A Case of Jeju Provincial Government Organization - (공공기관의 지식관리시스템의 이용 유무의 영향 요인 탐색 - 제주특별자치도 사례를 중심으로 -)

  • Kim, Min-Cheol;Kim, Dong-Wuk
    • Journal of Information Management
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    • v.42 no.1
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    • pp.199-219
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    • 2011
  • Currently, managers and researchers have come to recognize the importance of knowledge as an asset to the organization. Knowledge Management System (KMS) is developed as a tool to manage the organizational knowledge. A significant literature about Knowledge Management in the private, but not public sector. The purpose of the study is to analyze the influencing factors for KMS utilization in a public sector, Jeju Provincial Government Organization. This study performed an empirical research on factors that affect the use of KMS using Knowledge Management system capability and individual & organizational capability criteria. Survey was conducted with 150 employees from Jeju Provincial Government Organization. The Results show that an ability to create knowledge, and knowledge infrastructure are significant factors in determining the level of usage of Knowledge Management system. In particular, the most important factor that influences the usage of Knowledge Management is knowledge creation. and then knowledge infrastructure. The result also shows that the usage of KMS is affected by management's support willingness.