• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2007년도 추계학술대회 논문집
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• pp.9-10
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• 2007

This paper presents that what's the right EOLL(End of Lamp Life) phenomenon on fluorescent lamp and how to detect it according to the lamp status. In normal end of life situation for fluorescent lamps is emitter depletion of the cathodes. So, in most cases, the discharge will extinguish and the lamp will not start. But if the ballast is capable of sustaining the discharge, a new condition arise. Especially, the T4 and T5 lamp which has a short distance from cathode to socket of lamp future must have the EOLL Protection function.

• 한국간호교육학회지
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• 제12권1호
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• pp.95-103
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• 2006

Purpose: This is to find out the correlation between a families burden on a cerebrovascular accident patient and the demand for nursing home. Method: The data was established by using structured questionnaires for 102 nursing families of cerebrovascular accident patient at three university hospitals. Result: 1) The total burden was showed to be at 3.21, which was some what higher than average. Total average of demand for nursing home was at 3.30, which was higher than average. 2) This showed static correlations between the economic, social, physical dependent and psychological burden, and demand for nursing home. The result represents that the higher burden showed a significantly positive correlation to the higher demand for nursing home. Conclusion: If a systemic support of nursing home is prepared the differentiated nursing home matched perfectly on each burden, the burden on a family of the patient can be decreased effectively.

• International Journal of Advanced Culture Technology
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• 제8권3호
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• pp.101-105
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• 2020

In this study, the aim is to understand the strategy of video content production with the case of the baby shark development process of Pink Fong Company, the content is described about the successful planning and strategy of baby shark which has become a global content, and the main point describes the planning of the production process and marketing strategies for each country. The findings of the conclusions resulted in the application of the standards of globalization and the local understanding of culture as the main factors for content success. If the Pink Pong Company's method is applied through this, it is possible to apply what is the main issue of creative content production Reproduction in the future.

• 대한가정학회지
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• 제8권1호
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• pp.87-92
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• 1970

Recently it has become a common belief that ascorbic acid comes to break up in the process of making its color after peeling it. In this study the writer has attempted to observe whethier ascorbc acid really breaks up or not, what percentage of salt is needed in water to keep ascorbic acid in the best condition. Ascorbic acid was quantified by the spectrophotometric method. The results were obtained as follows; It seems that ascorbic acid does not break up considerably in mixing by the imxer for two minutes and if the mixing lasts longer ascorbic acid breaks up by heat and presumably by enzyme and oxidation. Generally at our home the breaking of ascorbic acid usually does not appear so much as only two minutes, mixing gives us the desirable result.

• 천문학논총
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• 제7권1호
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• pp.63-69
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• 1992

We have systematically investigated the X-ray spectra of normal galaxies, by using the Imaging Proportional Counter (IPC) data in the Einstein data base. We employed the X-ray color-color plot as well as the standard model fitting method which requires higher signal to noise ratio. We discuss X-ray emission mechanisms in terms of their spectral properties and the signature of cooling flows which are most likely present in X-ray bright early type galaxies. On the average, fits to absorbed thermal spectra show that the X-ray emission temperature of spirals is higher than that of ellipticals. This is consistent with our understanding that accreting binaries are a major X-ray source in spirals, while extended gaseous halos are present in ellipticals. The emission temperature becomes lower with increasing X-ray to optical luminosity ratio in E and S0 galaxies. This result is what we would expect if the emission of X-ray faint early type galaxies consists of a large evolved stellar component, while the gaseous emission becomes dominant in X-ray brighter galaxies. We also find a cool, self-absorbed core in some early type galaxies, which directly indicates the presence of cooling flows in such galaxies.

• 품질경영학회지
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• 제27권2호
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• pp.112-125
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• 1999

In a robust regression model, it is typically assumed that the errors are normally distributed. However, what if the error distribution is deviated from the normality and the response variables are not completely observable due to censoring? For complete data, Kim and Lai(1998) suggested a new adaptive M-estimator with an asymptotically efficient score function. The adaptive M-estimator is based on using B-splines to estimate the score function and simple cross validation to determine the knots of the B-splines, which are a modified version of Kun( 1992). We herein extend this method to right-censored data and study how well the adaptive M-estimator performs for various error distributions and censoring rates. Some impressive simulation results are shown.

• 한국공작기계학회논문집
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• 제10권5호
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• pp.104-109
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• 2001

Nowadays, Industrial competition power is depended on that rapidly produce the customized products. Therefor, it is necessary to reduce period of product development. Thus, concurrent engineering that work many process at a time was appeared and Rapid prototyping was appeared, it is method that rapidly produce the prototype. If the graphic model was made by CAD, the prototype can be made in short term. That provide what the part was directly tested by the worker. It provide a worker with believable data. We study on the influence of surface roughness on injection interval and part angle at FDM.

• 수산해양교육연구
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• 제28권6호
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• pp.1724-1738
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• 2016

This paper was researched on economic feasibility and sensibility of operation to offshore cage culture for cod. Offshore cage culture for cod needs to invest high budget what to construction and operation. And it was required variety methods about analysis of economic feasibility. Therefore, these were studied NPV, B/C and sensitivity for each by assuming a six scenarios considering the product performance according to the size of cod and culturing methods of fingerlings, etc. As a results, even though economy, if efficiency is low, it is a priority need the technical development to promote the feed efficiency to increase economic feasibility and should make efforts to enhance the business economy to strengthen the price competitiveness pricing with high quality products through quality control and brand recognition of cod. It expects to be used as a reference for related research in the future by deriving policy implications based on the method of analysis of the economic feasibility on offshore cage culture for cod.

• 대한전기학회논문지:전력기술부문A
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• 제52권1호
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• pp.58-61
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• 2003

A loop power system has a nonlinear characteristics. Also it is very hard to analyse through a equation if a discontinuous characteristic of the ULTC is added to a system. However, the problem which is hard to analyse by equations can acquire the useful result with what use the genetic algorithm (GA) which is a multi-point search program. In this paper, we proved through a simulation that the proposed method can reduce an operation frequency of tap changers and improving the quality of voltage of the buses by decreasing the deviation between the actual voltage and the reference voltage through the coordinated control of the ULTC that use GA in the loop power system.

• 한국인쇄학회:학술대회논문집
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• 한국인쇄학회 2000년도 춘계 학술발표회 논문집
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• pp.35-44
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• 2000

Because Image on the CRT change under different illuminants, human is difficult to see original color of object. If what is information of used illuminant on capturing object know, image can be transformed according to viewing condition using the linear matrix method. To know information of used illuminant at an image, the spectral radiance of illuminant can be estimated using the linear model of Maloney and Wandell form an image. And then image can be properly transformed it using color appearance model. In this paper, we predict the spectral radiance of illuminant using spectral power distribution of specular light and using surface spectral reflectance at maximum gray area. and then we perform visual experiments for the corresponding color reproduction according to viewing condition. In results, we ensure that the spectral radiance of illuminant at an image can be well estimated using above algorithms and that human visual system is 70% adapted to the monitor's white point and 30% to ambient light when viewing softcopy images.