• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1999년도 춘계학술대회논문집
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• pp.149-152
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• 1999

Computer-Aided Engineering (CAE) is one of the most effective method in design of golf clubs for determination of optimum shapes in short lead time. A new design of golf club drive with gas-filled titanium head has been carried out using two FEM softwares MARC and DYNA-3D. The main research work focuses on the decision of face thickness and the effect of filled gas pressure by analyzing the change of the kinematic energy of the ball during impact.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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• pp.273-274
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• 2002

In order to evaluate the flying characteristics of slider, the acoustic emission (AE) as well as friction signals are typically utilized. In this work the frequency spectrum analysis is performed using the AE signal obtained during the head/disk interaction such as load/unload mechanism using ramp, impact situation in the presence of a bump on disk surface and other contact phenomena including particle interaction. It was shown that the influence of impact can be characterized effectively in the AE frequency spectrum. As a result of this work, frequency spectrum analysis will be utilized with better understanding for studying the head/disk interface (HDI) characteristics and monitoring the particle interaction in HDI effectively.

• 경영과정보연구
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• 제17권
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• pp.315-333
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• 2005

The Internet has been identified as the worlds fastest growing marketplace with seemingly limitless opportunities for marketing products and services. Logistics service quality is considered an essential strategy for success and survival in today's internet environment. Logistics excellence has become a powerful source of competitive differentiation within diverse marketing offerings of internet firms. The quality of logistics service performance is a key marketing component that helps create customer satisfaction. As the business environment has changed, the operations based definition of logistics service have evolved. The objective of this study is to examine the logistics service quality in internet shopping mall and the impact of logistics service quality on customer satisfaction. The quality factors of logistics service in this study are consist of five quality factor. The survey result is drive from a man experienced in used internet shopping mall. The finding suggest that logistics service quality of five factor had a positive effort on customer satisfaction. Specifically, timeliness had the most consistent positive effort on customer satisfaction.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2004년도 추계학술대회
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• pp.435-440
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• 2004

The nonlinear impacts between the Control Element Drive Mechanisms (CEDMs) seismic cap plates installed on the CEDM top of a pressurized water reactor are studied with the dynamically reduced models of the CEDM and Integrated Head Assembly (IHA). It is important to develope nonlinear models considering the gap effects between the plates. In order to simulate impacts, reduced models for the primary structures, such as CEDM and IHA, are developed through simplifying detailed models, and the nonlinear structural analysis is performed under seismic loading conditions. The responses are examined in various gap sizes depending on the reactor operating conditions.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 1996년도 추계학술대회논문집; 한국과학기술회관, 8 Nov. 1996
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• pp.377-385
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• 1996

In the case of a precision equipment, it requires a vibration free environment to provide its proper function. Especially, lithography and inspection devices, which have sub-nanometer class high accuracy and resolution, have come to necessity for producing more improved giga class semiconductor wafers. This high technology equipments require very strict environmental vibration standard in proportion to the accuracy of the manufacturing, inspecting devices. The vibration criteria are usually obtained either by the real vibration exciting test on the equipment or by the analytical calculation. the former is accurate but requires a great deal of time and efforts while the latter lacks reliability. this paper proposes a new method to solve this problem at a time. the permissible vibration level to a precision equipment can be easily obtained by analyzing a process of Frequency Response Function. This paper also demonstrates its effectiveness by applying the proposed method to finding the vibration criteria of a Computer Hard Disk Drive by impact Test.

• 드라이브 ㆍ 컨트롤
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• 제19권4호
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• pp.77-84
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• 2022

The aims of this study was to estimate transfer force delivered to cone crusher housing and contribution of force transmission. The rock crushing condition caused vibrations in the cone crusher housing, which were experimentally measured, and frequency response functions (FRF) were also found through modal impact tests. Vibration data and frequency response functions were applied to the transfer path analysis (TPA) model. Next, transfer forces delivered to the cone crusher housing were quantified via the TPA method. Contribution of force transfer was also analyzed based on force estimation results. Finally, this study describes basic concepts and components of the TPA method and reviews its applicability to rotating machinery that experiences impact vibrations and forces.

• Journal of Information Technology Applications and Management
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• 제30권4호
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• pp.65-76
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• 2023

On social media, companies create brand experiences while customers actively seek, consume, and generate brand-related content. Customer engagement plays a vital role in the marketing performance of social media-driven brands. This study explores the positive relationship between brand authenticity, aligning brand identity with image, and self-brand connection, aligning brand identity with consumers' self-concepts, on customer engagement and its subsequent impact on brand loyalty. The study surveyed 243 consumers engaged with brand-related social media content, validating hypotheses using structural equation modeling. Results confirmed that brand authenticity and self-brand connection positively affect customer engagement, which, in turn, boosts brand loyalty. These findings highlight the importance of companies enhancing brand authenticity and self-brand connection to drive customer engagement, with theoretical and practical implications provided.

• 한국응급구조학회지
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• 제23권1호
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• pp.61-69
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• 2019

Purpose: The study aims to provide basic data to enhance the health of paramedics responsible for patient transport and treatment by analyzing the exposure level of paramedics to electromagnetic waves generated by electric devices used in ambulances. Methods: The study measured electromagnetic waves in ambulances in N region from July to December 2018. ME3030B produced by German Gigahertz Solutions was used to measure these waves and the maximum value was selected by moving it slowly in various directions. Each measurement part was selected and the mean value was calculated by repeatedly measuring at 10-minute intervals three times in total: $1^{st}$, $2^{nd}$, and $3^{rd}$ phase. Results: Among the electrical devices installed in the patient room of the ambulance measured at distances of 1 cm or 30 cm, results showed a high level of electric waves at the inverter ($26.25{\pm}39V/m$) and high level of electromagnetic waves ($564.00{\pm}31.75nT$) at the ozone sterilizer. According to measurements toward the front near the driver's seat, results indicated high levels of electric waves ($3.67{\pm}1.15V/m$) and electromagnetic waves ($450.00{\pm}19.52nT$) at the black box hard drive. Conclusion: Electromagnetic waves within the ambulance were stable and not beyond the range that might impact human health. However, in the case of the black box hard drive ($3.67{\pm}1.15V/m$, $450.00{\pm}19.52nT$) located under the passenger seat, it may have a direct effect on the human body and, thus it is necessary to move it to a storage area further away from the paramedics to minimized the impact.

• 한국융합학회논문지
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• 제8권1호
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• pp.149-154
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• 2017

본 연구는 그간 기술적 관점에서만 다루어진 홀로그램 미디어 연구와는 달리, 광고 미디어로서의 가능성을 소비자 커뮤니케이션 측면에서 살펴보고자 하였다. 이를 위하여 미디어 경험을 유도하는 소비자의 동기와 성격특성을 선행변인으로 설정하여 SNS 구전의도와 구매의도에 미치는 영향을 구조적으로 살펴보았다. 연구결과 소비자의 내재적 동기와 사회적 동기 모두 미디어 경험과 SNS 구전의도, 구매의도에 긍정적인 영향을 미치는 것으로 나타났다. 성격특성의 경우, 개방성은 동기에, 외향성과 개방성은 SNS 구전의도에 정(+)의 영향력을 가지고 있었다. 또한 SNS 구전의도는 구매의도에 긍정적인 영향력을 보여주었다. 이는 미디어 믹스 전략 또는 IMC 전략의 필요성을 확인시켜주는 결과라 할 수 있다.

• 보건행정학회지
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• 제15권1호
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• pp.30-56
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• 2005

This paper used two threshold approaches to measure the equity in urban households' out-of-pocket payments for health care from 1997 to 2002, which developed by Wagstaff and van Doorslaer. One approach used catastrophic health expenditure, which means that payments exceed a 'pre-specified proportion' of total consumption expenditures or ability to pay and the other used impoverishment that they did not drive households into poverty. Indicies for 'catastrophic expenditure' captured intensity as well as its incidence and also the degree of which catastrophic payments occur disproportionately among poor households. Measure of poverty impact also captured both intensity and incidence. The methods applied with data on out-of-pocket payments from the Urban Household Expenditure Survey Incidence and intensity of catastrophic payments - both in terms of total household consumption as well as ability to pay - increased between 1997 and 2002, and that both incidence and intensity of 'catastrophic expenditure' became less concentrated among the poor, but more concentrated in 2001 than in 1997. The incidence and intensity of the poverty impact of out-of-pocket payments increased between 1997 and 2002. Health security system may not have provided financial protection against catastrophic health expenditure to low-income households, because of high user fee policy not considering income level. The policies alleviating catastrophic health payments among the poor need to be more developed, and two threshold approaches further evaluated on our policy context.