• ETRI Journal
• /
• v.29 no.6
• /
• pp.817-819
• /
• 2007

A low-stress organic polymer membrane is proposed as a deformable mirror that can be incorporated into a cellular phone camera to achieve auto focusing without motor-type moving parts. It is demonstrated that our fabricated device has an optical power of 20 diopters and can switch focus in 14 ms. The surface roughness of the organic membrane is measured around 15 nm, less than ${\lambda}$/20 of the visible light. With curve fitting, we found that the actuated membrane is almost parabolic in shape, which leads to less aberration than spherical surfaces. It is suitable for reflective-optics systems.

• Management & Information Systems Review
• /
• v.31 no.1
• /
• pp.247-272
• /
• 2012

This study scarcity of recent online message promotion limited quantity of messages and time the message is limited controlled variable message whose regulatory focus and promotional discounts depending on the presence of any differences in attitudes and purchase intention appears, was to verify empirically. The results of this study, first, if limited quantity of messages focus on prevention rather than focusing on messages promoting promotion attitudes and purchase intention was higher. Second, the scarcity message is simply, as well as adjust the focus, such as price discounts and promotional activities can be controlled by a variety of points were identified. If the message is particularly limited quantity discounts are not present, rather than the message, the message is presented when the discount promotional attitudes and purchase intention, except that the amplification has been demonstrated. If the message is limited time, however, these discounts are worth the extra promotion on attitudes and purchase intentions are least likely to affect the thing that was found.

• Proceedings of the KSR Conference
• /
• 2011.10a
• /
• pp.2241-2249
• /
• 2011

As one of the organizational behaviors that contribute to the performance of a company, we introduce 'Service-oriented organizational citizenship behavior(SOCB)'. In this study, we focus on voluntary behaviors than a formal action specified in the job description. Since Organ(1986) proposed the concept -Organizational Citizenship Behavior: OCB-, the reason that many researchers have noted OCB has been discretionary. Our purpose in this study is as follows. First, it is systematically to construct the factors affecting SOCB as a dependent variable in this study. Second, it is to test the antecedent(service orientation) and the mediating variable(service commitment). Third, our study is an attempt to understand the relationship among the variables in overall dimensions.

• Proceedings of the KIEE Conference
• /
• 2005.10b
• /
• pp.346-348
• /
• 2005

In this paper, we designed a vehicle active suspension controller. Vehicle suspensions have various design objects with tradeoff among them and these objects cannot be satisfied under all driving conditions. We need to design a controller adapted to variable driving conditions changing the objects of vehicle suspensions. To design such a controller, we must be able to detect the current driving conditions and focus on the road frequencies giving us useful and important information about driving conditions. Detecting the road frequencies, we use the Fourier Transform. A unexpected driving change like a speed bump was also included to items the new designed controller must consider.

• 전기의세계
• /
• v.18 no.2
• /
• pp.15-20
• /
• 1969

The main focus of this paper is on the study of the .gamma. ray irradiation effect upon the electrical properties of a B-kind insulator which is one of the inorganic insulators. The mica is so typical of the B kind insulators as to be selected for a sample. DC, AC, and Impulse voltage is applied to the variable .gamma. ray irradiated dose samples with the constant time duration and the time variable samples with the .gamma. ray irradiated dose. The dielectric breakdown voltage and dielectric constant are measured from the samples and we get the experimental data that the dielectric breakown voltage variations are relatively large, but the dielectric constants are almost constant. The above conclusion is useful for the selection and application of the inorganic insulators under the irradiation effects, and we expect that the conclusion can apply to not only B-kind insulators but also the inorganic insulators.

• Journal of the Korean Data and Information Science Society
• /
• v.15 no.3
• /
• pp.565-574
• /
• 2004

Classification tree algorithms including as CART by Brieman et al.(1984) in some aspects, recursively partition the data space with the aim of making the distribution of the class variable as pure as within each partition and consist of several steps. SUPPORT(smoothed and unsmoothed piecewise-polynomial regression trees) method of Chaudhuri et al(1994), a weighted averaging technique is used to combine piecewise polynomial fits into a smooth one. We focus on applying SUPPORT to a binary class variable. Logistic model is considered in the caculation techniques and the results are shown good classification rates compared with other methods as CART, QUEST, and CHAID.

• Journal of Industrial Convergence
• /
• v.3 no.1
• /
• pp.79-100
• /
• 2005

Considering the above points, this study has been conducted to find out the effects brought by perceived organizational justice towards organizational citizenship behavior, with focus on multi-dimension and multi-class nature of trust. With this objective, I researched the following. First, which type gives larger effect to organizational citizenship behavior, the type of distributive justice (that is lower dimension of organizational justice) or that of procedural justice. Second, what effects are given to the 5 types of trust, by distributive justice and procedural justice. Also, what effects are given to organizational citizenship behavior by the 5 types of trust. Third, which type of justice gives larger effect to organizational citizenship behavior when trust is served as a medium. Fourth, which items should be dealt in priority to lead members of organization towards a desirable direction. The research for this purpose was conducted on the basis of comprehensive analysis of variable including. socio-population variable.

• Journal of Fashion Business
• /
• v.11 no.1
• /
• pp.97-107
• /
• 2007

The purpose of this study was to examine the relationship structure in discount store focusing on age. Subjects for this study were 360 customers who had purchased fashion products in discount stores. For date analysis, $x^2$-test and regression analysis were used. As the result, when comparing groups by the age, women in their 20s, 30s and 40s had 'relationship maintenance intention' through satisfaction, trust and commitment. In the case of women in their 20s group, the information, reputation, product salesperson and price variables had the effects on satisfaction. The information, location, salesperson variable had direct effect on relationship maintenance. In the case of women in their 30s group, the benefits, information, reputation and price variables had the effects on satisfaction. And the information, salesperson variable had direct effect on relationship maintenance. In the case of women in their 40s group, the information, location and price variables had the effects on satisfaction. The reputation variable had direct effect on relationship maintenance. Based on these results, fashion marketing strategies of discount store would be suggested.

• KSII Transactions on Internet and Information Systems (TIIS)
• /
• v.6 no.11
• /
• pp.2764-2783
• /
• 2012

Network virtualization supports future Internet environments and cloud computing. Virtualization can mitigate many hardware restrictions and provide variable network topologies to support variable cloud services. Owing to several advantages such as low cost, high flexibility, and better manageability, virtualization has been widely adopted for use in network virtualization platforms. Among the many issues related to cloud computing, to achieve a suitable cloud service quality we specifically focus on network and performance isolation schemes, which ensure the integrity and QoS of each virtual cloud network. In this study, we suggest a virtual network platform that uses Xen-based virtualization, and implement multiple virtualized networks to provide variable cloud services on a physical network. In addition, we describe the isolation of virtual networks by assigning a different virtualized network ID (VLAN ID) to each network to ensure the integrity of the service contents. We also provide a method for efficiently isolating the performance of each virtual network in terms of network bandwidth. Our performance isolation method supports multiple virtual networks with different levels of service quality.

• Journal of the Korean Society of Costume
• /
• v.61 no.9
• /
• pp.1-14
• /
• 2011

The purpose of this study was to understand the relationship between one's social-self image and Online Avatar image. Influence of these virtual images on one's attitude toward real world and commitment to the virtual world was examined. In addition, the gender difference was examined. A structural equation model with social self image as exogenous variable and influence of Avatar as endogenous variable was designed. Real and ideal Avatar images were the mediating variable in the model. Survey questionnaire was developed and data from 425 respondents were analyzed. Results indicated that the conceptual model was a good fit to the data. Respondents who perceived their social self-images importantly were likely to have real images of Avatars. Ideal image and real image had significant on commitment to virtual world and attitudes toward the real world. For male respondents, social self image had stronger influence on real image of Avatar and ideal image had stronger influence on commitment to virtual world than female respondents.