• IE interfaces
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• v.17 no.1
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• pp.56-70
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• 2004

Expanding product variety and high customer service provision place an enormous burden on demand forecasting and the matching of supply with demand in a supply chain. Postponement of product differentiation has been found to be powerful means to improve supply chain performance in the presence of increasing product variety. Delaying the point of product differentiation implies that the process would not commit the work-in-process into a particular finished product until a later point. This paper reviews the recent analytical models that quantify the value of delayed product differentiation. We conclude the literature review by summarizing and synthesizing the economic evaluation of the postponement and outline directions for future research.

• Animal cells and systems
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• v.5 no.4
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• pp.327-331
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• 2001

There is a critical developmental period during which brain sexual differentiation proceeds irreversibly under the influence of gonadal hormone. Recently, kinesin superfamily-associated protein 3 (KAP3) gene expressed during the 'critical period' of rat brain differentiation was identified by us (Choi and Lee, 1999). KAP3 functions as a microtubule-based motor that transports membranous organelles anterogradely in cells, including neurons (Yamazaki et al., 1996). mRNA level of KAP3 gene markedly increased before the initiation of puberty. Neonatal treatment of estrogen clearly inhibited the prepubertal increase in KAP3 mRNA level (Choi and Lee, 1999). In the present study, we aimed to investigate the effects of polychlorinated biphenyls (PCBs), as endocrine disruptors (EDs) on the expression of KAP3 gene during the 'critical period' of rat brain development. In our data, PCBs significantly decreased the expression of KAP3 gene in the fetal (day 17) and the neonatal (day 6 after birth in) male and female rat brains. The body weight and the breeding ability were significantly decreased in the PCBs-exposed rats compared with the control. These results showed that PCBs affect the transcriptional level of brain sexual differentiation related gene, KAP3, in the fetal and the neonatal rat brains. The maternal exposure to the PCBs may lead to toxic response in embryonic brain sexual differentiation and breeding ability after sexual maturation. This study indicates that KAP3 gene may be useful as a gene marker to analyze the molecular mechanism of toxic response in the animal brain development and sexual maturation exposed to PCBs.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.9
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• pp.156-166
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• 2019

For this study, a survey was conducted with the employees of small and medium-size enterprises (SMEs) located in Seoul and in Gyeonggi province. In the end, a total of 328 valid questionnaires were received and used in the analysis. The data of this study were analyzed using two statistics programs: SPSS Statistics 22.0 and AMOS 22.0. As for the method to verify the hypothesis, we used a structural equation model. The key findings of this study are as follows. First, the results of correlation analysis between management strategy factors, innovation activities, and business performance showed that the factors that were at a higher level of correlation were the technology differentiation strategies, marketing differentiation strategies, and the cost-driven strategy. Second, the strategic management factors that influenced innovation activities were in the following order: marketing differentiation, technology differentiation, and the cost-driven strategy, while the valid factors that affected business performance with significance were only the marketing differentiation strategy and the cost-driven strategy. Third, while the analysis showed that the technology differentiation strategy did not have a direct effect on business performance, it was shown that the relationship between the technology differentiation strategy and business performance was completely mediated by innovation activities.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.11
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• pp.6756-6766
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• 2014

The aim of this study was to validate the influence from academic stress caused by the achievement pressure of their parents and the adjustment effect of self-differentiation. The data was collected from 257 students from the 19th of May, 2014 to the 30th of May, 2014 for freshmen and sophomores of a college in the Kyoungbook region to validate the study. The SPSS/PC 18.0 program was used for the statistical analysis. Hierarchical multiple regression analysis revealed more less influence of academic stress caused by the achievement pressure((${\beta}=.111$, p<0.05) of their parents but there was no reasonable value in validating the adjustment effect to reduce the academic stress by self-differentiation, i.e., it should be a non-linear and complex effect rather than a simple linear relationship for self-differentiation.

• Asia Marketing Journal
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• v.8 no.3
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• pp.101-121
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• 2006

This case study explores various marketing strategies of Grundfos Pumps Korea Inc. that has become a front-runner in the industrial pump market of Korea as the enterprise that got into the business later. Grundfos Group, a multinational company with its head office in Denmark, has acknowledged diversity of each country and has granted its subsidiary companies with discretionary power so that they can establish marketing strategies suitable for the market they were competing in. Grundfos Pumps Korea has been very successful in its localization and differentiation of marketing strategies. First, Grundfos Pumps Korea achieved the trust of their customers by its high quality and consistent pricing strategies and has expanded its market very successfully with continuous product innovation and new product ideas. Second, it increased its brand awareness and recognition by brand differentiation along with the product differentiation strategy, which is exceptional in industrial market. It has conducted creative marketing activities and strategies to build brand equity and successful customer relationship management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.7
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• pp.357-369
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• 2020

This study examined the influential relationship between self-differentiation, interpersonal relationships, and social support of adolescent North Korean defectors as well as the mediating effects of social support in the relationship between self-differentiation and interpersonal relationships. For this study, the participants were selected among student North Korean defectors aged between 9 and 24 years. With these participants, a survey was conducted from November 4 to December 14, 2019. Two hundred eighteen questionnaires were used in the analyses, which were conducted with SPSS 23.0 and AMOS 23.0. The analyses yielded the following findings. The self-differentiation of the adolescent North Korean defectors had a positive impact on interpersonal relationships. The self-differentiation of adolescent North Korean defectors had a positive impact on social support, and the social support of adolescent North Korean defectors had a positive impact on interpersonal relationships. In the relationship between self-differentiation of adolescent North Korean defectors and their interpersonal relationship, social support had a mediating effect. This study showed that by improving the level of social support and self-differentiation of adolescent North Korean defectors, it would be possible to improve their interpersonal relationship issues.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.325-333
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• 2017

The purpose of this study was to examine the relationship between the Family Functioning, Smartphone Addiction and Self-differentiation of college students and investigate whether Self-differentiation mediated the relationship between Family Functioning and Smartphone Addiction. The subjects of this study were 176 college students from 3 colleges located in S-si and M-si and the data were collected over the period of 20 days from December 1 through December 20, 2016. As their Family Functioning increased, their Self-differentiation increased (${\beta}=667$, p<.001); as their Self-differentiation increased, their Smartphone Addiction decreased (${\beta}=-.361$, p<.001); moreover, their Self-differentiation fully mediated the relationship between their Family Functioning and Smartphone Addiction (Z=-2.336, p<.001). To alleviate the Smartphone Addiction of college students, their Family Functioning and Self-differentiation need to be improved.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.1
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• pp.354-361
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• 2019

This study was conducted to understand the relationship between the clinical competency of nursing students and their adult attachment and self-differentiation of nursing students. Data collection was conducted from the third and fourth grade students who had experienced clinical practice in a nursing university at Daejeon, Chungcheong province in two nursing universities at Daejeon and Chungcheong province. Finally, 169 out of initial 200 questionnaires were used for analysis. The collected data were analyzed through descriptive statistics, Pearson's correlation effectiveness, and stepwise multiple regression using the SPSS Statistics 22 Windows program. Attachment avoidance in adult attachment was significantly correlated with self-differentiation (r=-240, p=.002) and clinical competency (r=-.237, p=.002). Clinical competency was significantly correlated with attachment avoidance (r=-.237, p=.002) and self-differentiation (r=.248, p=.001). The result of stepwise multiple regression indicates that self-differentiation and attachment avoidance (F=8.707, p<.001) predicts 8.4% in clinical competency. The most powerful predictor was self-differentiation (${\beta}=.203$, p=.008), followed by attachment avoidance (${\beta}=.188$, p=.0015). Therefore, in order to improve the clinical competency of nursing college students, it is deemed necessary to develop and apply educational and counseling programs capable of increasing their level of self-differentiation while decreasing their degree of attachment avoidance.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.43 no.1
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• pp.7-15
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• 2020

It is a general phenomenon for manufacturers to provide vertically differentiated product line for more profit through improved market coverage. For such manufacturers, the compatibility between vertically differentiated products is an important decision issue. Some manufacturers provide full compatibility between high and low version products, whereas some provide only downward compatibility for the purpose of recommending high version product. In this study, the two representative compatibility strategies, full or downward, between vertically differentiated products produced by a single manufacturer are analyzed, especially under network externality and in the viewpoint of profit maximization. To do this we used a market model which captures the basic essence of vertical differentiation and network externality. Based on the proposed market model, the profit maximizing solutions are derived and numerically analyzed. The results can be summarized as follows : (1) Regardless of compatibility strategy, under network externality, vertical differentiation is always advantageous in terms of profit. (2) The full compatibility strategy is shown to be the most advantageous in terms of profit. In addition, it is necessary to make quality difference between differentiated products as wide as possible to maximize profit. (3) To gradually drive low version product out of the market and shift the weight pendulum of market to high version product, it is shown that the downward compatibility strategy is essential. Unlike intuition, however, it is also shown that in order to drive low version product out of market, it is necessary to raise the quality of the low version product rather than to lower it.

• Journal of Korean Society for Quality Management
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• v.45 no.3
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• pp.463-481
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• 2017

Purpose: This study provide the matching mechanism between startup and business incubator to enhance managerial performance of business incubator. In addition, we propose the differentiation strategy for business incubator based on the needs of startups. Methods: In order to carry out the research, we surveyed 216 startups who already have invested in venture capitals and angel investors and currently residing in business incubator and 30 venture capitals and angel investors. Based on survey results, we develop a business incubator capability table matching startup with business incubator. Results: Satisfaction and importance of the supporting programs varied depending on the startup experience and startup lifecycle. As a result, we recommended a R&D center for machinery/material, bio/medical and electric/electronics startups and individual office for ICT and knowledge service startups. In addition, we suggested a differentiation strategy to BI in university specialized for machinery/material, privately operated BI for electric/electronic, (local)government, R&D center and individual office for knowledge service respectively. Conclusion: In this study, business incubator capability table is applied to match startup with business incubator and it could be applied to evaluate the current status of business incubator. Furthermore, it will help to establish a future strategic direction for business incubator.