• 아태비즈니스연구
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• 제7권1호
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• pp.31-42
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• 2016

Small and Medium Enterprises (SMEs) are suitable to provide employment with lower investment in densely populated countries like Bangladesh. A stochastic frontier model is used to evaluate performance of SME Banking of the commercial banks in Bangladesh. Input (Total Deposit, Cost of Fund and Salary Expenditure) and output (Finance to SME) data are collected on 45 banks which are dealt with SME for 13 quarters from $1^{st}$quarter of 2010 to $2^{nd}$quarter of 2013. Average performance of the SME banking is 0.716 in Bangladesh. That is, banks have opportunity to increase 30% performance in SME banking from the same inputs. Bangladesh Development Bank has lowest performance (0.540) while Eastern bank has the highest performance (0.753). Highest (0.743) and lowest (0.662) performance is observed during the second quarter of 2013 and fourth quarter of 2010 respectively. Inefficient Bank might be benefited by following the rules of efficient banks.

• 유통과학연구
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• 제14권11호
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• pp.61-73
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• 2016

Purpose - Marketing scholars have developed various types of mathematical models for describing marketing phenomenon, because there is no single model comprehensive enough to incorporate all the relevant marketing phenomena. This study tries to summarize the behavioral foundations and the mathematical derivations of the most widely used marketing models and discusses their strategic implications. This study selected four representative marketing models: multinomial logit(MNL) model, elimination-by-aspects(EBA) model, Hauser and Shugan model and Bass diffusion model. Especially, this study focuses on Hauser and Shugan(1983)'s Defender model and discusses the model's behavioral foundation and its implications. Research design, data, and methodology - Of the four selected model, the multinomial logit model is selected as the basic normative model and the other three models are described as descriptive models in contrast. Starting the discussion from the multinomial logit model, this study explains what important strategic variables are incorporated in each of the four models. The IIA(independence of irrelevant alternatives) axiom and Luce choice model is also discussed in relation to the multinomial logit model. The concept of 'efficient frontier' is discussed in relation to Hauser and Shugan's model. Graphs and tables are used to represent the key implications. No empirical study is included. Results - The analyses of the mathematical marketing models are shown to be very useful in understanding the essence of positioning strategy. The multinomial logit model implies the importance of increasing utility or consumer preference level. The EBA model implies the importance of lowering the inter-brand similarity and dominating the competitors. Hauser and Shugan model implies the importance of considering customer heterogeneity distribution in selecting the target market. Conclusions - It is shown that the concepts of 'efficient frontier' is useful in understanding the effectiveness of positioning strategy. Market positioning can be understood as occupying some place on the efficient frontier. The important strategic implications can be summarized as follows: Always try to increase customer preference by providing what they value, and differentiate from competing alternatives as much as possible. The best positioning strategy is to dominate all the competitors and the worst is to be dominated by the competitors.

• 한국항해항만학회지
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• 제29권1호
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• pp.105-111
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• 2005

최근 심화되고 있는 컨테이너터미널 경쟁에서 각국 항만 및 터미널 운영업체는 터미널의 시설확충 뿐만 아니라 컨테이너터미널 효율성을 화물유치의 중요한 요인으로 인식하게 되었다. 이러찰 환경변화에 따라 컨테이너터미널의 효율성과 관련된 많은 연구가 수행되어 왔었다. 그러나 대부분의 기존 연구에서는 정성적인 설문조사나 기초데이터를 이용하여 컨테이너터미널에 대한 효율성을 부분적인 관점에서 분석하거나 단일 연도의 효율성 수준 및 자국 항만의 효율성만을 분석하였다. 따라서 본 연구에서는 확률프론티어 모형(Stochastic Frontier Model)을 이용하여 계량적이고, 패널자료를 사용하여 연도별 효율성의 변화를 실증적으로 분석하여 개별 터미널간의 효율성이 주는 시사점을 도출하였다. 우리나라 터미널의 효율성 수준은 해외 주요 터미널과 비교해본 결과 경쟁항만에 비해 감만터미널을 제외한 나머지 터미널은 낮은 수준으로 나타났다.

• 농업과학연구
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• 제37권3호
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• pp.509-514
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• 2010

The purpose of this study is to analyze the technical efficiency and its determinants for Korean Apiculture farming by using from door to door and e-mail inquiry data. The analysis was implemented through the Cobb-Douglas stochastic frontier production function (SFPF) model including the technical inefficiency effect model for cross-sectional data. To measure the SFPF model, honey production was used for a dependent variable, and for input variables labor cost, preventive cost, material cost, feeding cost, depreciation cost were used. Farmer's age, farmer's career, farming scale, full-time or half-time firm and movement or fixed firm variables were used to measure the inefficiency effect model. The average technical efficiency on apiculture farming in Korea is estimated to be 0.8112. It means that there were technical inefficiency of about 18.88% in Korea apiculture farming. In this study there are some suggestions which could increase the technical efficiency of Korean apiculture farming.

• 한국유기농업학회지
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• 제24권3호
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• pp.355-368
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• 2016

There are growing interests in environmental friendly cultivation for the matter of health concern. This study analyzes an economic efficiency of strawberry and tomato farming by considering the role of environmentally friendly cultivation. The Database of Rural Development Administration is used for strawberry and tomato farming households. We adopt a Bayesian stochastic frontier model to resolve a small sample property of the data. Empirical finding is that environmentally friendly cultivation improves the revenue of farming but the effect on net profit is not conclusive which calls for future research.

• Advanced Composite Materials
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• 제16권3호
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• pp.223-244
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• 2007

This study experimentally and numerically investigated the tensile damage progress in stitched laminates. In particular, it focused on the effects of stitching on the damage progress. First, we experimentally confirmed that ply cracks and delamination appeared under load regardless of stitching. We then performed damage-extension simulation for stitched laminates using a layer-wise finite element model with stitch threads as beam elements, in which the damage (ply cracks and delamination) was represented by cohesive elements. A detailed comparison between observation and the simulated results confirmed that stitching had little effect on the onset and accumulation of ply cracks. Furthermore, we demonstrated that the stitch threads significantly suppressed the extension of the delamination.

• 수산경영론집
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• 제43권2호
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• pp.67-77
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• 2012

Based on the survey on aquaculture management status in Nohwa-eup, Bogil-myeon, Wando-eup in Wando region, this study aimed to estimate productive efficiencies of abalone aquaculture production using a stochastic frontier approach (SFA) and to find out their determinants. In the analysis, a Cobb-Douglas production function with an inefficiency term that follows an halfnormal distribution was assumed for the estimation of productive efficiencies. Then, based on the outcomes of productive efficiencies, determinants of productive efficiency were investigated using a tobit regression model. Results showed that the average inefficiency was estimated to be 10% and the production size would be a statistically significant variable for the production. In addition, it was shown that the cage installing method would be an important factor affecting to the level of productive efficiency.

• 응용통계연구
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• 제22권6호
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• pp.1167-1176
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• 2009

항만이나 공항의 소유구조에 대한 효율성 분석은 지금까지 서로 엇갈리는 결과를 제시하고 있다. 즉, 민영화 또는 공영화로 인한 효율성 효과가 자료 또는 분석 방법에 따라서 일치된 결과를 보여주지 않고 있다. 본 논문은 국내의 항만이 포함된 국제 항만 교역데이터베이스를 기반으로 베이지안 확률적 프런티어 모형을 적용하여 항만의 소유 구조에 따른 효율성 분석을 하였다. 소유 구조는 Tongzon과 Heng (2005)의 방법을 따랐으며 제안된 몇 가지 모형과 그들의 모형을 DIC 통계량을 이용하여 비교하였다. 베이지안 추론에 필요한 MCMC 방법은 Griffin과 Steel (2007)에서 소개된 WinBUGS 프로그램을 이용하여 구현하였다.

• 경제분석
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• 제17권1호
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• pp.103-130
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• 2011

연구개발 및 정부의 연구개발지원의 성과에 대한 실증연구결과의 중요성에도 불구하고 연구개발투자의 생산성에 대한 영향을 분석하는 계량모형에 관한 논의는 상대적으로 활발하지 않았다. 본 연구에서는 연구개발투자의 생산성에 관한 기존 실증분석연구에서 활용한 계량모형들을 비교하여 모형의 장단점을 논하며 최근 발전된 관련 계량모형을 논함으로써 향후 응용연구에서 모형설정에 필요한 정보를 제공하고자 한다. 특히 기존 연구에서 가정하였던 연구개발투자와 생산성의 관계에 단조성을 완화하여 비단조성을 추정할 수 있는 모형을 소개하고 이를 기반으로 단조성 가정에 대한 검정방법을 논한다. 광공업통계DB에 있는 기업자료 및 OECD국가 패널자료에 논의한 계량모형을 적용함으로써 모형특성의 차이에 따른 추정결과의 차이점을 논한다.

• 한국통계학회:학술대회논문집
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• 한국통계학회 2003년도 추계 학술발표회 논문집
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• pp.289-294
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• 2003

최근 활발히 행하여지는 금융 CRM(Customer Relationship Management)은 은행의수익성 제고를 위하여 개별고객의 주요특성(거래이력, 가치 등)을 파악하고, 이를 근거로 유사한 고객들을 분류하여 고객관리 방안을 찾는데 그 목적이 있다. 본 연구에서는 B은행의 실제 CRM을 통하여 수익성을 높일 수 있는 마케팅 시사점을 도출하고자 하며 이러한 마케팅의 도출과 목표가 되는 고객을 어떻게 선정할 것인가의 질문에 대한 방법으로 계량경제학 분야에서 기업단위연구의 생산효율성을 측정하기 위하여 사용되어지고 있는 SFM(Stochastic Frontier Model)과 OLS(Ordinary Linear Model)의 방법을 사용하였다.