• Journal of the Optical Society of Korea
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• v.20 no.1
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• pp.150-155
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• 2016

To evaluate the autofocusing performance of recent mobile phone cameras, it is necessary to determine the peak position of the center field MTF (Modulation Transfer Function), -known as the through focus MTF- of the module. However, the MTF peak position found by conventional methods deviates from the ideal position due to the focus scanning resolution of mobile phone cameras. This inaccurate peak position results in false judgements of the optical performance, leading to yield losses or customer complaints. An increase in the focus scanning resolution can address this problem, but the manufacturing UPH (Unit per Hour) level will also unfortunately increase as well, resulting in a loss of manufacturing capabilities. In this paper, several fitting models are studied to find an accurate MTF peak position within a short period of time. With an analysis of a large amount of manufacturing data, it is demonstrated that the fitting methods can reduce false judgements and simultaneously increase the capabilities of the manufacturing system.

• Journal of Korean Institute of Industrial Engineers
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• v.37 no.4
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• pp.289-296
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• 2011

In most distribution centers, products are received from the suppliers in units of pallet, stored in a rack, moved to the picking area for replenishment, picked according to customer orders, and shipped to customers. In some distribution centers, however, replenishment is made in not a whole pallet but only a portion of a pallet load, mainly due to the limited space in the order-picking area; as a result, partially loaded pallets occupy cells in the rack. As the number of slow-moving items increases, more cells are occupied by partially loaded pallets so that fewer empty cells are available for storing full, incoming pallets. This will necessitate the construction or leasing of additional storage space, which will entail significant cost. As an alternative, we propose pallet consolidation, which involves moving a partial load to another partially-loaded pallet in order to create one empty cell in the rack. In this paper, we define three pallet consolidation problems; formulate each problem as a binary integer programming model; and present heuristic algorithms for the problems. The average performance of each of the proposed heuristics is evaluated using simulation.

• Journal of Distribution Science
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• v.16 no.1
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• pp.73-85
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• 2018

Purpose - The beauty salon industry is a highly competitive market. Every beauty salon shop aims to keep its customers satisfied and hopes that they will revisit several times. Hence, this paper investigates the key factors affecting the repurchase intention of consumers in the beauty salon industry in Taiwan. Research design, data, and methodology - We first use the content analysis of free-response narratives from beauticians to classify the key factors objectively and develop the questionnaire accordingly. We then distribute the questionnaire to 130 beauty salon consumers to complete the questionnaire. Next, the Grey Relation Analysis is employed to identify the key factors that affect the repurchase intention of consumers in the beauty salon industry. Results - From the perspectives of the beauty salon customers, the factors affecting the repurchase intention of consumers are (1) obvious treatment results, (2) the treatment space considers personal privacy, (3) the offer of promotional prices for treatment/product trials, and (4) the product knowledge of the beauticians. From the perspectives of the beauticians, the factors include (1) the treatment space is well-designed and makes the customers feel relaxed, (2) enhancement of the customer relationship, (3) the treatment space considers personal privacy, and (4) the positive service attitude of the beauticians. Conclusions - We analyze all the key factors and offer some suggestions as a conclusion.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.159-162
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• 2007

In the twentieth century, due to extraordinary development of companies and life style, etc, market environments to which companies around the world currently face are being changed with reflecting the current age in various fields, which result from globalization, digitalized innovation, diversity by information acceptance, an enhanced level of a consumer's consciousness, developed mass media, etc. The companies are trying to expand their sale areas, not only products but also their cultures, images, and brand power in the name of a 'marketing' in a space In other words, if companies and brands express some identities without considering an entire image evaluated by customers, a mis-positioning for the companies and the brands may be caused. In this case, the companies and brands may not influence on potential major customers at all, of an image for the companies and brands may be degrade Accordingly, a space marketing is required as a distinguished strategic means in characterizing identities according to brands. Also, a design for communicating the space marketing with the customers is required. Therefore, the purpose and effects of the present research are to analyze how identity characteristics for brands and company images are reflected by analyzing a faadeof a hall for housing cultures, and are to analyze how they are recognized by customer.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.11a
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• pp.93-98
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• 2007

As coffee's taste and scent are emphasized, and interior atmosphere has changed along with sale of brand's own products, there are also epochal trend changes in interior. So, changes within the space should be focused onto open type self coffee shop, a new cultural space distinguishable from existing coffee shops. Therefore, in this study, the following results could be obtained by performing customer-centered, spatial structural characteristics research on 5 take-out coffee shops opened after 2005 that are practicing self service in Busan and Gyeongsangnam-do regions. In this study, it was shown in the above results that location of the entrance, kitchen, and condiment bar, area per person, size and positioning of furniture, area of windows and doors, etc have strong influences for self service which customers themselves carry their food. Therefore, in planning the interior of self coffee ship in the future, presentation of more effective and practical space based on this analysis will be required.

• Journal of Koreanology Reviews
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• v.2 no.1
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• pp.27-31
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• 2023

The purpose of this paper is to study the relationship between Art management and Cultural activities in China from the K-wave case. Research design, data, and methodology: This study used the method of the cases study survey, with the K-wave case in as the survey objects, 3 valid survey sample case were collected in this paper. Results: The two dimensions of art management and cultural activities differently influences from the K-wave, and the influence of availability on customer satisfaction is not significant. Conclusion: The results of this study will provide useful reference for the Art management and Cultural activities in China from the K-wave case. And improve the development of art management and cultural activities in China by improving the K-wave of service quality. Art management can shape urban commercial space in a beneficial way, create a good consumption atmosphere, and enhance the attractiveness and competitiveness of the city. The introduction of art elements into urban commercial space can create a strong cultural atmosphere, so that the city presents a smart look. Art management has a positive impact on K-Wave production and operation activities, which can promote the shaping of art commercial space, the promotion of urban cultural atmosphere.

• Journal of Digital Convergence
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• v.17 no.9
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• pp.367-373
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• 2019

In modern society, with the changing lifestyle, demand for complex cultural spaces is rising and various cultural spaces are emerging. However, user-centered cultural space research has not yet been shown. In order to find out whether various cultural experience functions and user experience types of complex cultural spaces are being delivered properly, this study compared and analyzed the representative cultural spaces of Korea, 'Starfield Library' and 'ARC.N.BOOK'. User experience analysis tools and individual in-depth interviews were used as research methods. As a result, both spaces responded that commercial space and brand library were out of harmony and that the use of services in complex cultural spaces was inconvenient. This is interpreted as the result of the need for improvement measures in the value and usability of experience provided by the current complex cultural space and is expected to help develop the complex cultural space in the future.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.18 no.1
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• pp.98-104
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• 2004

This paper represents the fast and efficient load transfer guide for fault or outage restoration in distribution system. For restoration guide, system trace is performed to reverse direction(source side) from tie breaker in tree-structured distribution network. Search space and breaker's combinational number for restoration guide are greatly reduced. It is proposed the load transfer method including first stage restoration(single load transfer, double load transfer, triple load transfer), second stage restoration(transferring load to neighboring feeder in order to expand the capacity margin) and load cutoff guide. The proposed method can be easily applied to primary customer restoration, multi-fault recovery and distribution automation system.

• Korean Institute of Interior Design Journal
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• v.24 no.6
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• pp.22-29
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• 2015

The purpose of this study is to investigate the details of the overall interior design of the department store supermarket retail space, interior design and development, seeks to help change. In this study, a range of research the department store supermarket located in the major department store. Since 2012, new construction or renewal has been done in a department store, was investigated by selecting a total of five locations of two places in the premium supermarket. Conclusions are as followings ; First, In-store merchandising strategies, store configuration strategy, product mix strategies, and the layout plan considering the advanced strategies. Secondly, the interior guidelines are, (1)VP should be planned as an expression of a company or brand management strategies to visualize a concept image of product planning stages of merchandising to entering the store to induce curiosity to customers. (2)PP is by planning purposes, the use of lighting, directing structure, color harmony, by utilizing such as props and small parts must be able to attract attention. (3)IP is the customer to organize display, depending on the type of the display items to facilitate fraud, and the fixture plan in association with it, the customer selects a product must induced to purchase.

• Industrial Engineering and Management Systems
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• v.13 no.4
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• pp.454-462
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• 2014

Retention of possible churning customer is one of the most important issues in customer relationship management, so companies try to predict churn customers using their large-scale high-dimensional data. This study focuses on dealing with large data sets by reducing the dimensionality. By using six different dimension reduction methods-Principal Component Analysis (PCA), factor analysis (FA), locally linear embedding (LLE), local tangent space alignment (LTSA), locally preserving projections (LPP), and deep auto-encoder-our experiments apply each dimension reduction method to the training data, build a classification model using the mapped data and then measure the performance using hit rate to compare the dimension reduction methods. In the result, PCA shows good performance despite its simplicity, and the deep auto-encoder gives the best overall performance. These results can be explained by the characteristics of the churn prediction data that is highly correlated and overlapped over the classes. We also proposed a simple out-of-sample extension method for the nonlinear dimension reduction methods, LLE and LTSA, utilizing the characteristic of the data.