• 한국산림과학회지
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• 제99권6호
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• pp.891-899
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• 2010

이 연구의 목적은 선택실험기법을 활용한 조건부 로짓 모델을 이용하여 산림경관기능이 가지는 경제적 가치를 추정하는데 있다. 이를 위해 산림경관의 속성과 수준을 선정하였는데, 속성은 산림형태, 임상, 소밀도, 휴양적 요소, 지불의사금액 등이 그것이다. 이를 토대로 SAS 9.1을 이용하여 Orthogonal과 Balanced를 이루는 96개 선택 집합을 4개 타입으로 구성하였으며, 서울을 포함한 7개 광역시 시민을 모집단으로 설정하여 연간 가구당 지불할 의사를 면접조사방법으로 총 280부를 조사하였다. 그 결과, Non-ASC 모형에서 Mcfadden' ${\rho}$는 0.21, 우도통계량은 -2,631로 나타났다. 그리고 산림경관에 대한 가구당 평균 지불의사금액은 266,723원으로 나타났다.

• 보건행정학회지
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• 제12권4호
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• pp.18-33
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• 2002

This study was planned to investigate the difference in the choice of services between western and oriental medicine. Data were collected from 493 outpatients who visited the D hospital by structured questionnare. The results were as follows; The older aged groups, there were the more oriental medicine visitors, significantly Oriental medicine visitor had more experience to use the complementary food than western medicine visitor. In comparison of reason for service choice, the proportion of oriental medicine visitors was higher than western medicine visitor in considering of specialty of institution. In contrast, western medicine visitor had interest to 'newly-developed facility and equipment' and 'convenience and accessibility of service' as factor of service choice. In analysis of evaluation the service experiences, oriental medicine visitors evaluated the oriental medicine highly in 'therapeutic efficacy' and ' less side effect'. But western medicine visitor evaluated the western medicine highly in 'quick effect of therapy' and ' scientific apprach'. We concluded from result that there were difference in service choice behavior between western and oriental medicine visitor. We hope that these information will be applied to planning of consumer-oriented marketing strategy of hospital.

• 치위생과학회지
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• 제15권4호
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• pp.495-502
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• 2015

이 연구는 치위생학과 대학원에 진학한 치과위생사들이 대학원 선택 후에 자신의 대학원 대학원 선택 확신에 미치는 영향을 조사하고자 하였으며 다음과 같은 결론을 얻었다. 일반적 특성과 대학원 선택동기인 외적요인과 내적요인 차이를 분석한 결과 결혼여부에 따른 대학원 특성 지각요인 중 재정접근성요인은 기혼이 높게 나타났으며, 교육프로그램요인에서는 미혼이 높게 나타났다. 월 평균 소득은 재정 접근성요인, 교육프로그램요인 평균 점수를 높게 인식하는 것으로 나타났다. 또한 경력이 낮을수록 교육프로그램요인 평균 점수가 높은 것으로 나타났다. 내적요인은 통계적으로 유의한 결과를 나타내지 못하였다. 일반적 특성과 대학원 선택 확신요인 차이를 검증한 결과 미혼일수록 대학원 선택 확신요인 점수가 높았고, 월 평균 소득에 따른 대학원 선택 확신요인과 차이가 있는 것으로 나타났다. 대학원 선택동기 외적요인 중 교육프로그램요인과 장래성요인은 대학원 선택 확신요인에 영향을 미치는 것으로 나타났지만 내적요인은 영향을 미치지 않는 것으로 나타났다. 이상의 결과를 종합해 보았을 때, 치과위생사가 치위생학과 대학원에 진학하고 대학원 확신 선택요인에 가장 중요한 요인은 교육프로그램(교수 명성과 질, 전공프로그램의 질, 교수 학생 관계, 교수학생 비율, 학술활동)요인임을 알 수 있었으며, 장래성(학위 취득 후 진로선택 유리, 소득과 수입에서 유리, 사회 진출, 박사과정 개설) 또한 대학원 선택 확신요인에 필요한 요인이라고 볼 수 있었다. 따라서 치위생학과 대학원은 치위생학과에 진학하고자 하는 치과위생사에게 교육 프로그램의 관련 정보를 제공해야하며, 학문의 발전과 전문가의 영역을 넓힐 수 있는 교육 프로그램을 개발 및 개선시켜야 할 것이다. 또한 이 연구의 결과를 활용하여 치과위생사의 인적자원을 양성함에 있어 치위생학과 대학원에서 이들에 대한 지원 방안을 마련할 수 있을 것이다.

• 산경연구논집
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• 제9권6호
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• pp.57-64
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• 2018

Purpose - With the rapid economic development, great changes have happened in the Chinese beer market. The scale of imported beer is increasing. However, the sales of native Chinese beer decrease in recent years. It is because more Chinese customers prefer beer with unique attributes than those with lower prices. In order to take an advantage in this market, practitioners should develop new products to satisfy Chinese customers. Scholars have also focused on beer characteristics to estimate consumers' behavior for improving the development of beer industry. However, most studies are theoretically centered on marketing strategy management or general understanding of the market. It is not enough for us to explain customers' consumption patterns. Some empirical research did attempt to find out beer attributes that may influence their choice behavior. However, they failed to verify what can increase customers' utility through a new product. More importantly, few evidences can be found in the literature. Therefore this study explores the major characteristics of imported beer which may associate with customers' preferences. Research design, data, and methodology - With the results of literature review and focus group interview, we found out four main imported beer attributes and the levels of each factor. A pre-test is constructed to check the problems in the questionnaire protocol. With the results of pre-test, the revised questionnaire is processed among customers who have purchased and had imported beer in China regions such as Beijing, Shanghai, Jiangsu, Guangdong and so on. The choice-based conjoint analysis is applied to analyze the useful data of 205. Results - Results indicate that choice-based conjoint analysis is the effective method to estimate customers' choice behavior. Results also indicate that country of origin, price, taste, and package affect customers' preference and the importances of imported beer attributes are significantly different. Conclusions - Country of origin, price, taste, and package are important for customers to make an imported beer choice decision. Marketers should consider these determinants and their importance to develop new products. Moreover, choice-based conjoint analysis should be the useful method for practitioners to develop a new product of imported beer for sustainable business in the competitive industry.

• 대한산업공학회지
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• 제36권2호
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• pp.87-93
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• 2010

The partial least squares (PLS) method is popularly used for estimating the structural equation model, but the existing algorithm may not be directly implemented when probabilities are involved in some constructs or manifest variables. We propose a structural equation model including the brand choice as one construct having brand choice probabilities as its manifest variables. Then, we develop a PLS-based algorithm for the structural equation model by utilizing the multinomial logit model. A case is introduced as an application and simulation studies are performed to validate the proposed algorithm.

• 충청수학회지
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• 제16권2호
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• pp.75-78
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• 2003

The Tychonoff product theorem is one of the most fundamental theorems in general topology. As is well-known, the proof of the Tychonoff product theorem relies on the axiom of choice. The converse was also conjectured by S. Kakutani and Kelley [1] then resolved this conjecture in his historical short note on 1950. However, the original proof due to Kelley has a flaw. According to this observation, we provide a correction of the proof in this paper.

• 대한수학회논문집
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• 제21권2호
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• pp.211-217
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• 2006

Topos is a set-like category. In topos, the axiom of choice can be expressed as (AC1), (AC2) and (AC3). Category Fuz of fuzzy sets has a similar function to the topos Set and it forms weak topos. But Fuz does not satisfy (AC1), (AC2) and (AC3). So we define (WAC1), (WAC2) and (WAC3) in weak topos Fuz. And we show that they are equivalent in Fuz.

• 근관절건강학회지
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• 제22권3호
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• pp.177-184
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• 2015

Purpose: The purpose of the study was to evaluate career choice of male nursing students and identify factors influencing their career choice. Methods: Subjects were 123 male nursing junior and senior students in B city, U city, and GN area. Career types were classified into a hospital nurse and a community nurse. Subjects were asked about 29 items of nurse image and 31 items of satisfaction on clinical practice. The collected data were analyzed by frequency, percentage, average and standard deviation, t-test, ${\chi}^2$-test, and logistic regression, using SPSS 21.0 program. Results: The percentage of career choice which subjects hoped when admitted into nursing universities consisted of hospital nurses of 77.2%, while the percentage changed to hospital nurses of 52.8% at the time of this survey. The nurse image represented as an influencing factor, and it was found that if nurse image score increased one unit, the hoping units of career type of hospital nurse increased 2.69 times. Conclusion: The educational institutions have to provide career education programs and information concerned to not only hospital nurses but also community nurses, and further studies on the positioning and expanding roles of community male nurses need to be conducted.

• 대한산업공학회지
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• 제39권4호
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• pp.253-259
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• 2013

Investment scenarios in the transportation network design problem usually contain installation or expansion of multi-mode transportation links. When one applies the mode choice analysis and traffic assignment sequentially for each investment scenario, it is possible that the travel impedance used in the mode choice analysis is different from the user equilibrium cost of the traffic assignment step. Therefore, to estimate the travel impedance and mode choice accurately, one needs to develop a combined model for the mode choice and traffic assignment. In this paper, we derive the inverse demand and the excess demand functions for the multi-mode multinomial logit mode choice function and develop a combined model for the multi-mode variable demand traffic assignment problem. Using data from the regional O/D and network data provided by the KTDB, we compared the performance of the partial linearization algorithm with the Frank-Wolfe algorithm applied to the excess demand model and with the sequential heuristic procedures.

• Asian-Australasian Journal of Animal Sciences
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• 제7권3호
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• pp.317-320
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• 1994

An experiment was carried out with village chicken at the laying stage raised on the semi-intensive system on three feeding treatments with each of 30 birds replicated three times. The three feeding treatments were: layer mash only, layer mash and corn as choices and choices of a high protein concentrate and corn. Feed and protein intake was significantly higher for birds on the layer mash and lower for birds on the choices of a high protein and corn diet. There was no differences in egg production for the birds fed the layer mash either alone or a choice with corn but lower for the birds on the choices of a high protein feed and corn. There was no differences in egg weight and gross efficiency for all treatments. The practice of choice feeding layer mash and corn could be adopted by farmers rearing village chicken under the semi-intensive system due to the lower cost.