• 산업경영시스템학회지
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• 제31권2호
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• pp.43-50
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• 2008

In this paper we suggest the methods that compute the total inventory cost based on EOQ and the total inventory cost based on OMMIP. The total inventory cost consists of purchasing cost, ordering cost, inventory holding cost, stockout cost and so on. This papers also proposes the method that decides optimum order quantity as the order amount to minimize the total inventory cost with comparison of EOQ total inventory cost and OMMIP total inventory cost according to inventory holding cost as a fraction of unit cost.

• 농업과학연구
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• 제44권2호
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• pp.283-295
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• 2017

This study analyzed the effect of the intrinsic and extrinsic attributes of gochujang, Korean red chili paste, on purchasing intention and recommendation intention for consumption. Survey participants were female, married, aged 30 - 39 years, and highly educated with graduation from a university. Most participants purchased gochujang 1 - 2 times per year, most commonly at a shopping mall, and acquired information on the gochujang product from an advertisement or sponsored TV shows. For the factor analysis, five variables for intrinsic quality were considered: namely, healthiness, economics, convenience, diversity, and sense, whereas three variables were considered for extrinsic quality: trust, external appearance, and image. The factor analysis also confirmed the correlation between the validity and the reliability of the purchasing and recommendation intentions. The effect of intrinsic quality of gochujang on purchasing and recommendation intentions was tested through a multiple regression analysis. The purchase intention was most significantly affected by healthiness, cost, and convenience. On the other hand, the recommendation intention was most significantly affected by the diversity and, to a lesser degree, by the healthiness of the product. Among the extrinsic qualities, trust of consumers and the product appearance had a significant effect on purchasing intention. Recommendation intention was significantly affected by the appearance. And trust significantly influenced the recommendation. Therefore, a concrete and systematic marketing approach considering these factors.

• 한국산림과학회지
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• 제102권1호
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• pp.24-29
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• 2013

본 연구는 수확망의 이용 효과 및 투자수익성을 구명하여 밤 생산자의 수확망 이용에 따른 경제적 부담을 덜어주기 위한 정책제언에 필요한 기초자료를 마련하고자 실시되었다. 이를 위하여 수확망이 효율적으로 이용되고 있는 청양, 공주, 부여지역에서 6임가를 대상으로 설문조사를 실시하였으며, 비용편익법 중에서 순현재가치가와 수익비용비를 이용하여 투자수익성을 분석하였다. 분석 결과 청양A, 청양B, 부여A 임가에서 보조금이 없는 경우에도 투자수익성이 있는 것으로 나타났으며, 공주A, 공주B, 부여B 임가는 투자수익성이 없는 것으로 나타났다. 수확망 구입에서 보조금을 80%지원해 줄 경우, 청양A, 청양B, 부여A, 공주B 임가에서 투자수익성이 있는 것으로 나타났으나, 공주A, 부여B 임가에서는 여전히 투자수익성이 없는 것으로 나타났다. 임가마다 결과가 다소 상이한 것은 밤나무 식재방식이나 재배지 경사, 인력 활용도 및 숙련도 등의 차이가 원인인 것으로 사료된다.

• 한국의상디자인학회지
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• 제25권3호
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• pp.1-16
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• 2023

The purposes of this study were to investigate bag purchasing behaviors and design preferences of male and female adult consumers, and to find the differences depending on sex and age variable. A survey was conducted on 400 male and female adults from 20s to 50s. The questionnaire consisted of bag purchase behaviors, bag design preferences, and the subjects' demographic characteristics. The data were analyzed by Cronbach's α, factor analysis, x² test and t-test using SPSS. The results were as follows. First, as bag selection criteria, four factors (practicality, symbolism, aesthetics, and economics) were derived, and adult consumers considered economics as the most important among the factors. As for purchasing information sources, three factors (media, human resources, and store) were derived, and adult consumers considered human resources and store information sources more important than media. The main motive for purchasing bags was age and damage of the owned products, and Internet shopping malls were the most common purchasing place. The average annual cost of purchasing bags was 100,000 to 300,000 won, and the frequency of purchase was about once a year. Second, as bag preference images, four factors (individual, romantic, active, and classic image) were derived, and adult consumers preferred classic images the most. The shoulder bag was the most preferred as the bag shape, and black was the most preferred bag color. For the material, natural leather was the most preferred, and for the size, medium size was the most preferred. Third, bag purchasing behaviors and design preferences showed many significant differences according to the sex and age of the consumers. Therefore, the results of this study suggests that bag companies need to establish product development and marketing strategies in consideration of differences according to the sex and age group of adult consumers.

• 지능정보연구
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• 제17권4호
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• pp.95-108
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• 2011

인터넷 비즈니스의 활성화에 따라서 기업은 고객의 인물정보 및 거래정보를 활용하여 보다 맞춤화된 개인화 서비스를 제공하고 있다. 기존의 고객군별 예측기법은 유사한 고객들을 군집화하여 고객군별로 예측모델을 수립하는 것으로, 구매가 많고 충성도가 높은 핵심고객에게 요구되는 일대일 서비스를 제공하는 데는 한계가 있다. 반면 일대일 고객별 예측기법은 각 고객에게 고도로 맞춤화된 서비스를 제공하지만, 과거 구매이력이 많지 않은 고객 이나 신규 고객에게는 정확한 개인화 서비스를 제공하지 못한다. 본 연구는 고객의 구매빈도에 따라서 유사 고객들과의 군집화 수준을 동적으로 조정하는 새로운 지능형 개인화 시스템을 제안한다. 제안된 시스템은 과거 구매가 많은 고객들에 대해서는 일대일 예측모델을 수립하지만, 구매 빈도가 낮은 고객의 경우 다른 고객들과의 최적화된 군집화를 통해 예측모델을 수립한다. 본 기법을 Neilsen의 음료수 구매 데이터셋에 적용하여 고객의 일회 구매금액 및 구매품목을 예측한 결과, 기존 두 예측기법들에 비하여 적정한 계산비용(computational cost)으로 더욱 정확한 개안화 서비스를 제공할 수 있음을 확인하였다.

• 한국경영과학회지
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• 제35권1호
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• pp.111-124
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• 2010

In the last decade, traveling purchaser problem (TPP) has received some attention of the researchers in the operational research area. TPP is a generalization of the well-known traveling salesman problem (TSP), which has many real-world applications such as purchasing the required raw materials for the manufacturing factories and the scheduling of a set of jobs over some machines, and many others. In this paper we suggest heterogeneous multiple traveling purchaser problem with budget constraint (HMTPP-B) which looks for several cycles starting at and ending to the depot and visiting a subset at a minimum traveling cost and such that the demand for each product is satisfied and the cost spent for purchasing the products does not exceed a given budget threshold. All the past studies of TPP are restricted on a single purchaser. Therefore we randomly generated some instances. CPLEX is used for getting optimal solutions in these experiments.

• Management Science and Financial Engineering
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• 제18권2호
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• pp.23-27
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• 2012

The problem of jointly determining a robust optimal bundle of price and order quantity for a retailer in a single-retailer, single supplier, single-product supply chain is considered. Demand is modeled as a decreasing power function of product price, and unit purchasing cost is modeled as a decreasing power function of order quantity and demand. Parameters defining the two power functions are uncertain but their possible values are characterized by ellipsoids. We extend a previous study in two ways; the purchasing cost function is generalized to take into account the economies of scale realized by higher product demand in addition to larger order quantity, and an exact transformation into an equivalent convex optimization program is developed instead of a geometric programming approximation scheme proposed in the previous study.

• 한국건축시공학회지
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• 제8권3호
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• pp.51-58
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• 2008

The paradigm shift in housing market has changed consumers' interests to the cost of housing, it is the mos important factor considered in purchasing house recently. In this study, some factors influencing on the cost o: housing and some preference factors considered in purchasing house are analyzed. The AHP(Analytic Hierarchy Process) is used to analyze preference factors. The results of this study can be used as a decision maker in the initial planning stage of construction industry.

• 디지털융복합연구
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• 제18권10호
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• pp.527-535
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• 2020

연구 목적은 충청권 초등학생 자녀를 둔 어머니를 대상으로 가공식품 표시기준 인식이 구매행동에 미치는 융복합 효과를 살펴보기 위한 것으로, 가공식품 구매행동에 따른 집단 구분을 위해 2단계 군집분석을 하였고, Schwarz's BIC 기준에 의해 군집수를 결정하였다. 그룹 간 구매행태 특징 분석 결과 '편의추구형'과 '대형마트선호형', '고비용반복 구매형'의 3개 모형이 결정되었다. 그룹별 학력 및 직업은 '대형마트선호형'의 대졸 이상 비율이 유의적으로 높았고, '고비용반복구매형'의 취업모 비율이 높았으며, 식품표시기준 필요성은 '대형마트선호형'이 다른 그룹보다 높았다. 모든 그룹에서 식품표시기준 항목 중 '유통기한'을 가장 중요한 것으로 인식하였고, 구매 시 고려사항은 '사용원료'와 '식품첨가물', '영양성분표시'에서 '대형마트선호형'이 높은 점수를 보였다. 가공식품 구매행동 개선을 위해서는 무엇보다 실생활에 쉽게 적용할 수 있는 대상자 맞춤형 교육매체 개발이 필요하다.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2002년도 춘계공동학술대회
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• pp.449-455
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• 2002

This paper considers that advanced planning and scheduling (APS) in manufacturing and the efficient purchasing where each customer order has its due date and multi-suppliers exit We present a Make-To­Order Supply Chan (MTOSC) model of efficient purchasing process from multi-suppliers and APS with outsourcing in a supply chain, which requires the absolute due date and minimized total cost. Our research has included two states. One is for efficient purchasing from suppliers: (a) selection of suppliers for required parts; (b) optimum part lead­time of selected suppliers. Supplier selection process has received considerable attention in the business­management literature. Determining suitable suppliers in the supply chain has become a key strategic consideration. However, the nature of these decisions usually is complex and unstructured. These influence factors can be divided into quantitative and qualitative factors. In the first level, linguistic values are used to assess the ratings for the qualitative factors such as profitability, relationship closeness and quality. In the second level a MTOSC model determines the solutions (supplier selection and order quantity) by considering quantitative factors such as part unit price, supplier's lead-time, and storage cost, etc. The other is for APS: (a) selection of the best machine for each operation; (b) deciding sequence of operations; (c) picking out the operations to be outsourcing; and (d) minimizing makespan under the due date of each customer's order. To solve the model, a genetic algorithm (GA)-based heuristic approach is developed. From the numerical experiments, GA­based approach could efficiently solve the proposed model, and show the best process plan and schedule for all customers' orders.