• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2007.11a
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• pp.3-8
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• 2007

초고층건축물이 증가함에 따라 고강도콘크리트의 사용량이 증가하는 추세이다. 고강도콘크리트는 내구성 및 사용성이 우수한 장점을 가지고 있는 반면 화재시 심각한 폭렬현상을 발생시켜 콘크리트 내역 감소 및 철근의 노출로 인해 건물이 붕괴까지 이르게 되는 원인이 된다. 따라서 고강도콘크리트의 내화특성을 고려한 해석(열응력, 질량 이동, 폭렬) 과정을 거쳐 폭렬 저감방안을 모색하여야 한다. 이러한 폭렬 저감방안을 표층부의 온도상승 온도구배 저감 방안, 수중기압 저감/수분 이동을 용이하게 하는 방안, 폭렬억제형 피복콘크리트 이용방안, 폭렬에 의한 콘크리트의 비산을 방지하는 방안 등이 있으며 각 방안들은 장단점을 내포하고 있어 상황에 따라 탄력적으로 적용하여야 하며, 향후 고강도 콘크리트의 역학적 성상을 고려하여 단점을 보완하고 추가적인 대책용 수립할 수 있도록 많은 연구가 필요 할 것으로 판단된다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2007.11a
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• pp.764-769
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• 2007

This paper is studied the noise and vibration characteristics analysis of the three-phase induction AC motor of the electrical forklift. And we suggest the method which the reduction orders the noise and vibration to be the mechanical. In other to investigate these characteristics, we considered the mechanical characteristics, the electromagnetic effects, and these interactions. In mechanical, we studied the characteristic of the stator, the bearing supported condition of the rotor, and the sound radiation. In electronically, this paper is considered the harmonic effect which is related the magnetic motive force (mmf) with respect to the characteristic of the slot number of the rotor and the stator and the pole number of the motor. Finally we investigated the overall noise and vibration of the induction motor by relations between the electronically harmonic and the mechanical resonance of the stator. By the analysis of the generally three-phase induction motor, we suggest the design methodology to low noise and vibration.

• Journal of the Korean Society of Fashion and Beauty
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• v.4 no.4 s.10
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• pp.56-62
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• 2006

The purpose of this study is suggest that hair illustration study on transfer dyeing. Hair illustration seems to motive power changeable for the beauty culture. In 1991's, At the begin collage come to this day that many university has concerned about this a field. while hair illustration stay the real state of thing a basic education and limited the sphere of utilize and education. At the Europe nations and Japan be done already means that hair illustration become thought come to an understanding for the guest each saloon. In particular, The saloons is showed new style, trend, pamphlet and its was become the diversification aspect to the fixtures used saloons. accordingly, Hair illustration look fittings at individuality and a characteristic of the each saloon. Experiment education of the hair illustration is applicable to a course of study into the experimentation manufacture and theory explanation adapt special of transfer dyeing. accordingly, Hair illustration will be used to easy saloon. Consequently, This papers is suggest that hair illustration effect was showed method of the expression a fact or the side art toward change of the period and abject of the popularity.

• Journal of Distribution Science
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• v.15 no.2
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• pp.7-14
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• 2017

Purpose - This study attempts to extend the research in responsible luxury by identifying contexts where Corporate Social Responsibility (CSR) can promote luxury brands' evaluation. It contributes to the literature on consumer responses to CSR, and to responsible luxury in particular and demonstrates how dispositional consensus and luxury-CSR information of luxury brands affects consumers' evaluation of brand. Research design, data, and methodology - An experiment was conducted to test the relationship between brand evaluation and responsible luxury brands' CSR information using collected data through a survey in a large university of South Korea. Study conditions were manipulated with various product types to analyze the relationship in different product domains. Results - When consensus regarding sincere and altruistic motive of companies for CSR activity is high, the perceived fit between luxury brand and the type of CSR has no effect on brand evaluation. But, in case of lower consensus regarding the benevolent company motives, higher fit enhances evaluation than lower fit. Conclusions - In using consensus as a guiding factor to choose the type of charity with favorably view, the level of irrespective fit can help luxury firms to enjoy the benefits of better image. In case of low consensus donating to charities that are closely related to the brands' product or area of business seems to be fruitful.

• Journal of Korean Academy of Nursing Administration
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• v.12 no.4
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• pp.521-531
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• 2006

Purpose: The purpose of this study were to examine the pay system and pay form of hospital nurses. Methods: This study performed secondary analysis on the existing data and employed a case study design. Data were collected from May 1, 2005 to September 30, 2005. Analysis of the results was carried out using SPSS win 12.0 for frequency, percentage, mean and standard deviation. Results: All hospitals did have pay steps considering the seniority rule. Each hospital had a variety types of an allowances, the criteria of the payment, and the bonus. The majority of payment form was a monthly pay. Several suggestions could be drawn from this study. The pay system of the hospital nurses should reflect market pay and pay system should be set up according to the value of duty, performance, and expertness of hospital nurses and should be clear and lucid. Conclusion: Pay is a major function of human resource management and is a motive to nurses. Each hospital's pay system is different outwardly but it is the same as internally. Therefore pay system and form should reflect a value of the duty and the expertness and performance of nurses.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.7 no.6
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• pp.1236-1243
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• 2003

In this paper, we designed and implemented a practice-oriented simulation-type web courseware to learn the ‘Digital Circuits’ subject effectively. The implemented web courseware utilized multimedia elements such as graphics, animations, and voices etc. for improving understanding and interaction of learning. Also, the web courseware could be easily updated a learning information by using database built in a web server system. In result, the implemented web courseware could encourage a learner with a motive of learning and improve effects of learning. Also, a learner can widely learn because we can add various contents to database according to need. Furthermore, the web courseware could improve understanding for learning by offering feedback on the result.

• Proceedings of the KSME Conference
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• 2002.08a
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• pp.155-158
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• 2002

In general, TVC(Thermal Vapor Compressor) is used to boost/compress a low pressure vapor to a higher pressure for further utilization. The one-dimensional method is simple and reasonably accurate, but cannot realize the detail as like the back flow and recirculation in the mixing chamber, viscous shear effect, and etc. In this study, the axisymmetric How simulations have been performed to reveal the detailed flow characteristics for the various ejector shapes. The Navier-Stokes and energy equations are solved together with the continuity equation In the compressible flow fields. The standard $k-{\epsilon}$ model is selected for the turbulence modeling. The commercial computational fluid dynamic code FLUENT software is used for the simulation. The results contain the entrainment ratio under the various motive, suction and discharge pressure conditions. The numerical results are compared with the experimental data, and the comparison shows the good agreement. The three different flow regimes (double chocking, single chocking and back flow) have been clearly distinguished according to each boundary pressure values. Also the effects of the various shape variables (nozzle position, nozzle outlet diameter, mixing tube diameter, mixing tube converging angle, and etc.) are quantitatively discussed.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.1 s.139
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• pp.124-135
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• 2005

This study was intended to compare and analyze the clothing purchasing behavior of Chinese career women in Benjing, Shanghai, Shenzhen, and Changchun, and to provide useful information for establishment of marketing strategies for China. The subjects were 662 career women in their 20's or 30's living in Benjing, Shanghai, Shenzhen, and Changchun. Data was collected through the questionnaire based on the theoretical and previous studies from April 9, 2003 to April 31, 2003. A total of 662 questionnaires was analyzed by frequency, percentage, ANOVA, Duncan's multiple range test, and ${\chi}^2-test$. The results of this study were as follows: 1. Demographic variables such as an age, marriage, academic back ground, residential city, monthly income, and monthly expenditure on clothing were significantly different among the career women in Benjing, Shanghai, Shenzhen, and Changchun. 2. Clothing purchasing behavior variables such as clothing purchasing motive, using informants, clothing selection standards, store selection standards, and satisfaction after purchasing clothes were significantly different among the career women in Benjing, Shanghai, Shenzhen, and Changchun.

• Journal of IKEEE
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• v.22 no.3
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• pp.759-766
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• 2018

This paper presents a high-speed axial-flux machine which utilizes the idea of sinusoidal shaped pole combined with a consequent iron-pole. The target of the proposed machine is the cost reduction of the relatively expensive Samarium-Cobalt (SmCo) permanent magnet (PM) material and the torque per PM volume improvement by using sinusoidal consequent-pole rotor. The effectiveness of the proposed machine is validated by comparing it with conventional consequent-pole and with conventional PM machines using 3-D finite element method (FEM) simulations. The comparison and analysis is done in terms of back electro-motive force (back-EMF) harmonic contents, torque per PM volume and torque ripple characteristics. The simulation results show that the proposed machine is suitable and cost-effective for high-speed and high torque per PM volume applications. Furthermore, due to the consequent pole, the magnetic flux saturation and the overload current torque-capability are also presented and discussed in the paper.

• Transactions on Electrical and Electronic Materials
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• v.16 no.1
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• pp.37-41
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• 2015

The most common structure of the current transformer (CT) consists of a length of wire wrapped many times around a silicon steel ring passed over the circuit being measured. Therefore, the primary circuit of CT consists of a single turn of the conductor, with a secondary circuit of many tens or hundreds of turns. The primary winding may be a permanent part of the current transformer, with a heavy copper bar to carry the current through the magnetic core. However, when the large current flows into a wire, it is difficult to measure its magnitude of current because the core is saturated and the core shows magnetic nonlinear characteristics. Therefore, we proposed a newly designed CT which has an air gap in the core to decrease the generated magnetic flux. Adding the air gap in the magnetic path increases the total magnetic reluctance against the same magnetic motive force (MMF). Using a ferrite core instead of steel also causes the generation of low magnetic flux. These features can protect the magnetic saturation of the CT core compared with the steel core. This technique can help the design of the CT to obtain a special shape and size.