• 한국경영과학회:학술대회논문집
• /
• 한국경영과학회 2006년도 추계학술대회
• /
• pp.161-164
• /
• 2006

The sales of consumer durables are composed of first time purchases and replacement purchases. Since the sales for most mature durable products are dominated by replacement sales, it is necessary to develop a model incorporating replacement component of sales in order to forecast total sales accurately. Several single product diffusion models incorporating replacement demand have been developed, but research addressing the multi-product diffusion models has not considered replacement sales. In this paper, we propose a model based on consumer choice behavior that simultaneously captures the diffusion and the replacement process for multi-product relationships. The proposed model enables the division of replacement sales into repurchase by previous users and transition purchase by users of different products. As a result, the model allows the partitioning of the total sales according to the customer groups (first-time buyers, repurchase buyers, and transition buyers), which allows companies to develop their production and marketing plans based on their customer mix. We apply the proposed model to the Korean automobile market, and compare the fitting and forecasting performance with other Bass-type multi-product models.

• 소성∙가공
• /
• 제19권4호
• /
• pp.242-247
• /
• 2010

In the multi-pass shape drawing process, it is important to design the intermediate dies for producing sound products. Up to now, the design of the intermediate dies is mainly carried out by the industrial experts based on their experience. In this study, a design program was developed to design the intermediate dies for multi-pass shape drawing process. The program was programmed by using VisualLISP. In this program the intermediate dies can be designed by using the initial material shape and the final product shape. In order to verify the effectiveness, the program was applied to design the intermediate dies of multi-pass shape drawing for producing four teeth spline and gun slide. Finally, FE analysis and shape drawing experiment were performed to verify the effectiveness of the designed intermediate dies. As a result, it was possible to produce the drawn products with the required dimensional accuracy.

• 한국복식학회:학술대회논문집
• /
• 한국복식학회 2003년도 International Costume Conference
• /
• pp.73-73
• /
• 2003

The study was done to provide domestic fashion multi-shops with basic information about the marketing strategies through an investigation the marketing strategies for domestic multi-shop dealt with imported product only.

• 한국복식학회:학술대회논문집
• /
• 한국복식학회 2003년도 International Costume Conference
• /
• pp.74-74
• /
• 2003

The study was done to provide domestic fashion multi-shops with basic information about the marketing strategies through an investigation the marketing strategies for domestic multi-shop dealt with imported product only.

• 한국환경농학회지
• /
• 제41권4호
• /
• pp.288-309
• /
• 2022

BACKGROUND: The objective of this study was to develop a comprehensive and simple method for the simultaneous determination of 59 veterinary drug residues in livestock products for safety management. METHODS AND RESULTS: For sample preparation, we used a modified liquid extraction method, according to which the sample was extracted with 80% acetonitrile followed by incubation at -20℃ for 30 min. After centrifugation, an aliquot of the extract was evaporated to dryness at 40℃ and analyzed using liquid chromatography combined with tandem mass spectrometry. The method was validated at three concentration levels for beef, pork, chicken, egg, and milk in accordance with the Codex Alimentarius Commission/Guidelines 71-2009. Quantitative analysis was performed using a matrix-matched calibration. As a results, at least 52 (77.6%) out of 66 compounds showed the proper method validation results in terms of both recovery of the target compound and coefficient of variation required by Codex guidelines in livestock products. The limit of quantitation of the method ranged from 0.2 to 1119.6 ng g-1 for all matrices. CONCLUSION(S): This method was accurate, effective, and comprehensive for 59 veterinary drugs determination in livestock products, and can be used to investigate veterinary drugs from different chemical families for safety management in livestock products.

• 복식문화연구
• /
• 제15권3호
• /
• pp.420-430
• /
• 2007

Noting that there is an increasing trend of the so-called 'neo-single life style' among women these days, this research aims to make a product development for these neo-single women in this era of families of a single member by analyzing their concepts and characteristics. We payed a particular attention to the data from such sources as newspapers, magazines or the articles in the Internet. The essence of our research lies in the analysis of target market, in the suggestions in the brand planning and product development and in the designs of fashion and interior products for them. The result of this research is as follows. First, it turns out that these neo-single women enjoy a kind of multi-mixing code lifestyle rather than showing a preference for a particular brand. For this reason, we have decided to pursue a multi-concept brand fonn as a right direction for brand planning for them. Second, as for a philosophy behind the brands, we suggest a concept of 'small utopia' for neo-single women and express such as new aristocracy, happiness and pleasure. Third, we adopt 'YOU' as the name of the brand as it reflects their various life styles and characteristics. Fourth, as for the product development of F/W in 2007, we have decided on 'Minimal Natural' as it mixes up the concepts of the controlled beauty of sophistication and multi-functional elements and 'Modern Primitive' as it expresses the ethnic elements on modern images having craft factors and modern images. We have performed concrete tasks in creating images, coloring, making fabrics for each theme. Fifth, we have chosen and suggested other products that are suitable for these neo-single women who seek for multi-functional but simple kinds after surveying a wide range of products in magazines or in the Internet.

• 국제지역연구
• /
• 제22권4호
• /
• pp.123-143
• /
• 2018

복합원산지제품 수용에 관한 지금까지의 많은 연구들이 다양한 시사점들을 제시해옴으로써 학문적인 기여를 해왔지만, 소비자의 구매성향에 따라 태도의 변화를 살펴본 연구는 매우 드물게 진행되어왔다. 본 연구는 기존 연구의 한계점을 보완하고자, 소비자의 구매성향을 합리적 소비성향, 브랜드 추구성향, 타인의식 소비성향으로 분류하여 고관여 복합원산지제품에 대한 수용과정이 어떻게 나타나는지를 파악해보고자 하였다. 또한 기존 연구의 측정방법을 보완하기 위하여 본 연구는 제품에 대한 복합원산지정보가 노출되기 전후의 상황을 구분함으로써, 소비자들의 수용행동을 보다 정교하게 분석하고자 하였다. 이를 위해 266명의 소비자들을 대상으로 설문조사를 실시하였으며, 구조방정식모형 분석을 통해 통계분석을 실시하였다. 연구모형의 검증결과, 소비자의 구매성향 가운데 타인의식 소비성향은 복합원산지제품의 순응과 반감에 모두 유의미한 영향을 미친다는 것을 알 수 있었다. 아울러, 복합원산지제품에 대한 반감수준은 순응수준보다 더욱 강력한 파급효과를 지닌다는 것을 확인할 수 있었다. 이상의 연구결과를 바탕으로 본 연구는 복합원산지제품 가운데 고관여제품을 판매하는 기업들을 대상으로 실무적으로 유용한 시사점을 제시하고자 하였다.

• 한국가구학회지
• /
• 제25권4호
• /
• pp.331-337
• /
• 2014

The purpose of this paper is to evaluate the moment resistance of glulam post-to-base connections by applying quasi-static cyclic loads. The connectors consisted of inserted plates and drifted pins according to the load direction. The connection types employed in this study were total three including two unidirectional types (H, V) and the multi-directional type (M). The moment resistance of 8 mm-plate M-type is compared to 6 mm plate. Total four types of Post-to-base connection are prepared and tested under pseudo-static reversed cyclic loading. Test results showed that the yield moment of multi-directional connection is about 2 times higher than that uni-directional connections. The ductility ratio of multi-directional connection determined by EEEP was higher that that of uni-directional connection. It was becoming higher as the thickness of plate is increased. The Finite Element Analysis was conducted to estimate the stress distribution behavior of tested connections. Results showed the failure of multi-directional type were caused by the split of pined hole and the shear failure of lifted part of post.

• 한국산업융합학회 논문집
• /
• 제9권4호
• /
• pp.277-283
• /
• 2006

As the products such as HDD, Notebook, PDA, and Mobile Phone become smaller and thinner, the radius of threads as well as holes for assembling those products become smaller, even down to 1mm. To produce such small holes and thread efficiently, multi tapping is highly necessitated. However the multi tapping characteristics is not well known because its complicated cutting mechanism and thus the quality of the produced holes and threads is not well studied yet. In this paper, experiments have been conducted for small-radius threads using M2 and M2.6 and M3 cold forming tap to investigate multi tapping process using several useful signal such as torque and Z-axis encoder pulse. The surface and profile of the machined threads have been magnified and observed through a SEM.

• 소성∙가공
• /
• 제18권4호
• /
• pp.283-289
• /
• 2009

The multi-stage shape drawing is used to obtain long shaped products with high levels of dimensional accuracy and quality. It is important to design the cross sectional shapes of the intermediate passes to meet the required dimensional accuracy of the final product in the multi-stage shape drawing. Until now, the cross sectional shapes of the intermediate passes have been designed by the experiences. It is still remained unsolved problem to design the cross sectional shapes of intermediate pass drawing dies in the multi-pass shape drawing. In this study, a new technique is proposed to design the cross sectional shapes of intermediate passes. The proposed method is applied to a multi-stage shape drawing for a LM-guide which is one of the representative shape drawing products. In order to verify the effectiveness of the proposed method, FE-simulation and experiments have been carried out. The dimensional accuracy of the proposed method is compared with that of the conventional shape drawing process designed by the industrial engineers.