• Proceedings of the KSME Conference
• /
• 2007.05a
• /
• pp.1658-1662
• /
• 2007

The tire uneven wear has been an ongoing concern for a long time, and one of customer's complaints too. This paper deals with uneven wear improvement of passenger car tires, to have tested the tire wear levels by each wheel alignment set (according to changing toe and camber) using taxis. The pre-set wheel alignments on test vehicle were gained by energy friction simulation of tire. The result of this experiment was as follows : First, verified the effects of initial wheel alignment (adjusted at Curb Vehicle Weight) to minimize tire uneven wear. Second, tire uneven wear makes tire life much shorter than even wear does.

• Journal of the Korean Society for Precision Engineering
• /
• v.25 no.2
• /
• pp.88-95
• /
• 2008

With society focusing more and more on environmental issues, the recycling of materials of all types has become an important concern. In this paper, optimization method is developed for reducing cost and improving quality in mill scale recycling. An experimental investigation into the process parameter effects is presented to determine the optimum configuration of parameters for performance, quality and cost. Taguchi's optimization approach was used to obtain the optimal parameters. The significant parameters were identified and their effects on mill scale recycling were studied. As a results, a confirmation experiment with the optimal levels of process parameters was carried out in order to demonstrate the effectiveness of the Taguchi method.

• Journal of the Korean Professional Engineers Association
• /
• v.18 no.3
• /
• pp.21-27
• /
• 1985

Earthen mass located beneth a sloping group surface, whether natural or manmade, have a tendency to move downward and outward under the influence of gravity. Unless this tendency is suitably counteracted by the Shearing resistances within the mass, a landslide occurs. Avoiding such instabilities is a major concern of the geotechnical engineer. The shearing behavior of a soil is determined empirically, i.e., by field tests or laboratory tests. This results are applied to the slope stability analysis. The factor of safety for slope stability analysis is much more sensitive to the choice of strength parameters as interpreted from soil tests than to the choice of the computational method of analysis. This paper was investigated the influence of the change in the factor of safety due to a change in one of the parameters, relative to the total change in the factor of safety due to change in all parameters. A conclusion may be reached with respect to the required precision definition of the different variables to limit uncertainties in the factor of safety to tolerable levels.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
• /
• 2006.11a
• /
• pp.341-342
• /
• 2006

A physical model for reduction of Electromagnetic Interference(EMI) or its predecessors, Radio Noise, Electrical Noise, or Radio-Frequency-Interference(RFI), is a rapidly expanding digital technology. It covers the frequency spectrum from DC to about 3 GHz EMI is the poisoner which does not allow radio, TV, radar, navigation, and a lot of electrical, electro-mechanical, and electronic and communication devices, apparatus and systems to operate compatibly in a common frequency spectrum environment EMI can result in a jammed radio, heart pacer failures, navigation errors and many other either nuisance or catastrophic events. Therefore, it follows that this spectrum pollution problem has reached international levels of concern and must be dealt with m proportion to the safety and economic impact Involved.

• The International Journal of Costume Culture
• /
• v.4 no.3
• /
• pp.203-216
• /
• 2001

Subjects were 405 female college students and 505 was utilized for structural equation modeling. As results, hedonic shopping value had positive effects on impulse purohasing, variety seeking, and purchasing involvement. In contrast, interestingly, impulse purchasing did not show any significant effect on brand loyalty and purchasing involvement had rather a positive effect on brand loyalty. There was a Positive effect of hedonic shopping value on brand loyalty. This result indicates that people who get more involved in and enjoy clothing shopping are likely more brand loyal than others. This seems to come from the intrinsic characteristics of shopping. People who enjoy clothing shopping likely have high level of fashion or style concern, and this might lead higher levels of purchasing involvement and brand loyalty. Due to the symbolic characteristics of clothing, the brand loyalty of clothing seems to be more symbolic and emotive rather than utilitarian and cognitive.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.10 no.9
• /
• pp.1633-1640
• /
• 2006

The problem of reducing power dissipation while simultaneously delivering acceptable levels of performance is becoming a critical concern in high pelf[mann system design. In this paper, we present this power dissipation problem from the clock generation and distribution side. We examine clock power efficiency and several applications as well as wireless communication circuits.

• Proceedings of the Korean Society For Composite Materials Conference
• /
• 2005.11a
• /
• pp.243-246
• /
• 2005

The weight reduction of carbody stl1lctures is of great concern in developing high speed tilting train for the normal operation of tilting system. The use of composite materials for the carbody structures has many advantages due to their excellent material propel1ies. In this paper, finite element analysis was conducted to verify the safety of the composite structures of Tilting Train eXpress(TTX). A train prototype with carbon/epoxy composite carbody was manufactured to perform static loading tests according to JIS E 7105. The loading tests were simulated by FE analysis to compare with the test results. To obtain more accurate and detailed result of stress distribution in local region of carbody, the submodeling approach was used. The submodeling analysis results showed the high levels of stress concentration occured on window frame part of TTX as the loading test results did.

• Asia pacific journal of information systems
• /
• v.26 no.1
• /
• pp.163-188
• /
• 2016

Compliance with information security policies has been an important managerial concern in organizations. Unlike traditional general deterrent theory, this study proposes whistle-blowing as an alternative approach for reducing internal information security policy violations. We build on the theories of planned behavior and rational choice as well as develop a theoretical model to understand the factors that influence whistle-blowing attitudes and intention at both the organizational and individual levels. Our empirical results reveal that altruistic and egoistic concerns are involved in the development of whistle-blowing attitudes. The results not only extend our understanding of whistle-blowing motivation but also offer directions to managers in promoting internal disclosure of information security breaches.

• Asian Pacific Journal of Cancer Prevention
• /
• v.16 no.15
• /
• pp.6639-6643
• /
• 2015

Background: Prostate cancer is a major concern of public health. Microvascular density (MVD) is one of the prognostic markers for various solid cancers. Matrix metalloproteinase 11 (MMP11) plays an important role in angiogenesis and changes in its expression level are known to be associated with tumor progression and clinical outcome. Aim: To investigate the relationship between MVD and MMP11 expression in prostatic adenocarcinoma tissues. Materials and Methods: The expression levels of MMP11 and MVD were analyzed immunohistochemically for 50 specimens of prostatic adenocarcinoma. Results: MMP11 was mainly expressed in stromal cells but rarely seen in epithelial cells. Mean MVD was $36/mm^2$, and it was correlated significantly only with bone metastases. MVD was also significantly correlated with MMP11 expression (r=0.29, p=0.044). Conclusions: MMP11 may alter the stromal microenvironment of prostate cancer to stimulate tumor angiogenesis.

• Journal of Korean Society for Quality Management
• /
• v.40 no.3
• /
• pp.415-425
• /
• 2012

Purpose: ISO 26000 is a newly emerging international standard for corporate social responsibility. This paper aims to derive core subjects of primary concern when introducing and practicing corporate social responsibility. Methods: Perceived performance and importance levels on core subjects in ISO 26000 are investigated, and a survey is conducted from members of organizations having published CSR reports. Frequency analysis, analysis of variance, cross tabulation and IP analysis are used to analyze surveyed data. Results: Items to be improved with high emphasis among 7 core subjects in ISO 26000 are organizational governance for public and private service sectors, fair operating practices for industrial goods manufacturing sectors, and organizational governance and environment for consumer goods manufacturing sectors. Human rights and labor practice are perceived as having high performances in comparison with importance. Conclusion: Organizations should find ways to build social responsibility into their governance systems and procedures with high priority.