• Korean Management Science Review
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• v.26 no.3
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• pp.67-78
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• 2009

In this paper, I analyze the mobile broadband services market characterized by vertical and horizontal differentiation. Vertical differentiation as service quality differentiation is based on the transmission speed of mobile internet service and horizontal differentiation as spatial differentiation is based on the service coverage. Theoretical explanations for the competitive price policy have been developed in the game context of WiBro which represent the high quality within the limited service coverage and HSDPA which represent relatively low quality with nation-wide service. When the WiBro has a mobile broadband service quality advantage and the difference in quality is sufficiently low, the price of WiBro with limited service coverage is relatively lower than that of HSDPA. This occurs because the advantage of WiBro's vertical service differentiation is offset by the disadvantage of horizontal differentiation. The difference in the quality of mobile internet service, however, is not too high, the price of WiBro is relatively higher than that of HSDPA. Moreover, when the service quality of WiBro is sufficiently high, the low quality HSDPA service faces no demand.

• Culinary science and hospitality research
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• v.14 no.4
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• pp.161-175
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• 2008

The purpose of this research is to find out the impact of quality management and differentiation strategies on customer satisfaction and management performance in family restaurants. In particular, it aims to identify whether such quality management and differentiation strategy have positive influence on customer satisfaction and perceived customer satisfaction as indicated through management performance. For the empirical analysis, a questionnaire survey was applied to a total of 250 customers who experienced family restaurant service in Seoul during the past one year. The model was tested using SPSS 12.0 and visual PLS(partial least squares) programs on a sample of the 198 surveys which showed a 92% usable response rate. The results of empirical analysis showed as follows: 1) quality management has a significant effect on customer satisfaction and differentiation strategies but not significant on management performance. 2) differentiation strategies have a significant effect on customer satisfaction and management performance. 3) customer satisfaction has a significant effect on management performance.

• Korean Journal of Culture and Social Issue
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• v.8 no.2
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• pp.33-49
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• 2002

The present study investigated the relationship among the level of family differentiation, quality of family relationship, and intimacy with their partners in 381 adult children. First, this study examined the relationship between the level of family differentiation and quality of family relationship. The result showed that the level of family differentiation was positively and significantly correlated to quality of family relationship. This finding indicated that family differentiation may be used for an objective and useful index to measure the dynamics of emotional system and the level of family-of-origin emotional health. Second, the influence of the family of origin was studied through exploring the relationship between the level of differentiation of family of origin, and adult children's intimacy with their partners. It was found that the family differentiation level was positively and significantly related to adult children's intimacy with their partners at each subsystem, but family differentiation levels of parents more influenced on adult male's intimacy than on adult female's intimacy with their partners.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.441-445
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• 2007

The mass housing supply policy of the government has resulted in the customer-centered market, and thereby the age of quality competition in the industry. In line with this trend of quality competition, therefore, this preliminary study aims to investigate the requirements of housing product planning to live up to the needs of customers in terms of quality, and thus analyze the types of quality differentiation of a housing product unit in our housing market. It turned out that many cases attempted differentiation in such ways as merely using luxurious finishing materials and instantly popular environment-friendly materials, and combining partial and limited household items with architectural elements of the facility system. The result of this study shows that the differentiation plan of housing product should be customer-centered, and therefore, focus on quality differentiation through organic combination of architecture-oriented plane and interior elements with technology-oriented facility and product elements. Hereby, in the future, housing product planning should include sustainable differentiation plans with reconsideration of concepts that customers have, and the needed procedure.

• Journal of the Korea Convergence Society
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• v.9 no.9
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• pp.217-228
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• 2018

It is aimed at providing a guide for effective ERP implementation strategy in view of the need for differentiation and cost advantage strategy from competitors in introducing ERP centered on SMEs. The results show that differentiation and cost superiority and service quality are dependent on the introduction performance and mediating effect. First, the differentiation or cost advantage strategy supports the previous research results in financial performance. However, in the differentiation strategies, only the non-financial aspects were noted. Second, the differentiation and cost advantage strategy were analyzed to have financial performance only in the assurance of service quality factor and the remaining service quality was not significant in the introduction performance. Third, the mediating effect of consulting service quality was analyzed in terms of differentiation or cost advantage Did not do it. In conclusion, system construction is different from financial perspective in terms of construction strategy. In service quality factor, it affects the confidence that supplier provides, knowledge and confidence, and ability to give faith.

• Fashion & Textile Research Journal
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• v.18 no.1
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• pp.27-37
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• 2016

This study examined consumer perceptions towards outdoor wear differentiation and product attributes for outdoor wear differentiation to develop an outdoor wear differentiation strategy. It also investigated how consumer's evaluated product attributes according to consumer's demographic characteristics. Data were acquired from a survey of 454 adult respondents aged over 20 that was analyzed with descriptives, frequency, t-test, one-way ANOVA, factor analysis, and reliability. The results were as follows. First, it showed that consumers did not have a positive or a negative perception toward outdoor wear differentiation, and they thought outdoor wear should be differentiated. Those married and older tended to think that outdoor wear should be differentiated more than that for those single and younger. Consumer evaluations were significantly different on the necessity of outdoor wear differentiation according to age and total income. Second, consumers assessed that color, pattern and textiles had similar characteristics among outdoor wear brands; in addition, brand recognition and brand image had very different characteristics. Third, product attributes for outdoor wear differentiation were service and store, product quality, brand and popularity, and product designs with mean values of product quality, product design, service and store, and brand and popularity, respectively. Fourth, consumers were significantly different in the importance assessment of product attributes for differentiation according to gender, marital status and age.

• Journal of Families and Better Life
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• v.33 no.2
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• pp.89-101
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• 2015

This study examined the effects of self-differentiation and psychological discomfort on antenatal attachment of pregnant couples in their third trimester of pregnancy. The subjects were 182 couples in J province who had participated in the first wave of the Korea Attachment Longitudinal Study (KALS). Data were analyzed by means of frequency, percentages, Pearson's correlations, and stepwise multiple regression models using SPSS 20.0. The findings were as follows. First, the independent t-test showed that the mean scores of pregnant women's self-differentiation were lower than their spouses in all subscales except emotional cutoff, and higher than in all psychological discomfort subscales. There was no significant difference in antenatal attachment quality between women and men, but the pregnant women significantly spent more time thinking about the fetus than their spouses. Second, the stepwise multiple regression models revealed that pregnant women's emotional cutoff in self-differentiation influenced the most on both quality and quantity of antenatal attachment. Among subscales of their spouses' self-differentiation, only emotional reactivity had an impact on quality of antenatal attachment, and fusion with others had the most impact on quantity of antenatal attachment. Among the pregnant women's and their spouses' psychological discomfort subscales, only depression influenced each quality and quantity of antenatal attachment. This is the very first and only study in which the impact of the pregnant couples' self-differentiation on antenatal attachment has been examined.

• Journal of Korean Society of Transportation
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• v.3 no.1
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• pp.76-85
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• 1985

The significant role of transportation system for economic development process has been recognized, but the argument that transportation improvements stimulate economic development has brought sometimes no resonance in lacking of a plausible theory on the conditions and process of economic development by transportation investment. This paper reviews the theory on regional differentiation of transportation system and shows why and how the installation of a new transportation system or the improvements of the old transportation quality differentiate the spatial order of economic activities. It presents the interaction between the change of transportation quality with introducing of definition "transportation value" as tool of its determination and economic activities following the regional differentiation process, which result means regional defferentiation of niveau of economic development.

• Journal of Industrial Technology
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• v.18
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• pp.233-240
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• 1998

In this study, ride sensitivity analysis of train with non-linear suspension elements is performed. Non-linear characteristics of springs and dampers for primary and secondary suspensions of a train is parameterized. Equation of motion of the train model is derived, and using the direct differentiation method, sensitivity equations are obtained. For a nominal ride quality performance index, sensitivity analysis with respect to various design parameters regarding non-linear suspension parameters is carried out.

• Korean Journal of Agricultural Science
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• v.48 no.4
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• pp.911-926
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• 2021

We devised a grape variety model to estimate the impact of lowering the Shine Muscat quality level on the grape market. Shine Muscat has become a popular grape variety in Korea. Accordingly, the area devoted to the harvesting of Shine Muscat has increased dramatically since 2016. Our study examines how a reduction in the quality of Shine Muscat affects other grapes such as Campbell Early, giant peak, and Muscat Bailey A (MBA). The Armington model was used to impose consumer preferences and product differentiation assumptions. We found that a decrease in the consumer preference for Shine Muscat realized by lowering the quality of Shine Muscat largely reduces the price of this variety. Also, the prices of other grape varieties fell via a substitute effect. Moreover, if grape varieties were more differentiated, the reduction in the price of Shine Muscat would be greater, while the decreases in the prices of other grape varieties would be smaller. These results imply that farmers of Shine Muscat must continue with quality management efforts to avoid the negative effect of changing consumer behavior with regard to Shine Muscat against a reduction in its quality. Our model introduces a product differentiation model for the fruit market and helps policymakers and farmers understand the impact of changing market conditions in the fruit market.