• 방송공학회논문지
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• 제11권4호
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• pp.448-457
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• 2006

일반적으로 3D 입체음향을 생성하기 위해서는 소리가 음원으로부터 청자의 두 귀에 이르는 정보를 포함하고 있는 머리전달함수를 사용한다. 그러나 HRTF의 비개인화적인 특성 때문에 양쪽 귀까지의 거리가 같아지는 혼돈원추상에서는 앞/뒤 방향지각에 대한 혼돈을 주게 됨으로써 입체감을 저하시키게 된다. 이에 본 논문에서는 인간의 청각특성에 따른 여기에너지를 이용하여 앞/뒤 음상정위의 특성을 개선하는 방법을 제안하고자 한다. 서로 대칭되는 각 HRTF의 여기 에너지를 계산하고 각 bark 대역에 따른 에너지의 비율을 추출하는 방식으로써 각 HRTF의 스펙트럼 특성을 부각시키는 방법을 제안하였으며 청감테스트를 통해서 제안한 방식이 기존 방법보다 방향감을 개선시킴을 확인할 수 있었다.

• 한국세라믹학회지
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• 제44권1호
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• pp.12-17
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• 2007

Recently, Korean food culture has westernized and the consumption of meat has been increased. As a result an enormous amount of disposal of bone is generated and most of them are buried without reutilization. By making bone ash using pig bone, the possibilities of application are examined. The purpose of this study is to establish a manufacturing process of bone ash for the celadon bone body using pig bone. The calcination of the pig bone was mostly to change to the calcium phosphate hydroxide $(Ca_5(PO_4)_3OH)$. The celadon body mixed with pig bone ash 8%, $CaCO_3$ 9%, when fired at $1240^{\circ}C$ under reduction atmosphere, shows 0.1% of water absorption, 65.23 MPa of bending strength.

• 한국세라믹학회지
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• 제52권1호
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• pp.41-47
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• 2015

Celadon shards from Gangjin and Buan were analyzed for their color, chemistry and microstructures. They exhibited similar chromatic characteristics in a $CIEL^*a^*b^*$ analysis. All of the glazes assessed showed comparable compositional areas, while the bodies from Gangjin shards had higher $RO_2$ concentrations. A high degree of similarity was also noted in the microstructures of the glaze and bodies from both regions. Anorthite crystals appeared in the glaze layer, and phase separation behavior developed around these crystals. This may have been caused by the glaze chemistry and the sintering process given the lengthy heating and cooling time. A Raman analysis indicated higher isolated $SiO_4$ unit ($Q_0$) values for the Buan samples. This can stem from the higher firing temperature or the longer sintering process.

• 한국세라믹학회지
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• 제51권3호
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• pp.150-155
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• 2014

In aprevious study, the mutual interaction between $Fe_2O_3$ and $TiO_2$ was found to influence the color of celadon glaze. Celadon samples were prepared with varying concentrations of $TiO_2$ at a fixed level of $Fe_2O_3$. The electronic states of Fe and Ti were analyzed by M$\ddot{o}$ssbauer spectroscopy and electron spin-resonance spectroscopy, respectively. These results were examined with the celadon colors measured according to CIELAB values. This study revealed that an increase of $Ti^{3+}$ in the glassy phase decreased the $Fe^{2+}/Fe^{3+}$ ratio, resulting in a color change of the celadon samples in the GY and Y groups. The maximum reflectance wavelength was shifted from 505 nm to 610 nm with an increase in the $TiO_2$ concentration.

• 말소리와 음성과학
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• 제4권2호
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• pp.105-114
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• 2012

This paper will discuss the difference between self assessment of voice disorders and the hearer voice assessment of a comparative group of normal subjects. The study was conducted on 25 voice disorder subjects and 32 hearers of a comparative group of normal subjects. The results are as follows. Firstly, in K-VHI and VHI-H, the hearers of the comparative group of normal subjects perceived more serious voice disorders than the voice disorder group in all sub-domains. Likewise, in K-VQOL and VRQOL-H, the hearers of the comparative group of normal subjects perceived more serious voice disorders than the voice disorder group in all sub-domains. Secondly, the hearer voice assessment of the comparative group of normal subjects showed no difference in gender regarding the perception of the severity of voice disorder issues. Thirdly, the hearer voice assessment of the comparative group of normal subjects states that in the emotional aspects of VHI-H, professional voice users perceive more serious voice disorders than others. Accordingly, in VRQOL-H, there was no difference in use of the voice between professionals and others.

• 보존과학연구
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• 통권27호
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• pp.145-163
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• 2006

This study is to be investigated through firing experiment in studio in order to reveal a physical properties of celadon according to change firing temperature. The results can be briefly summarized as below; Firstly, in measurement of color chromaticity, samples of first firing in body were effective in differentiating of changed color in samples from each other but there of second firing were not. The color of the glaze was more effective change than that of the body. Secondly, bulk density of body was increased with temperature and it was attained highest point in $1200^{\circ}C$ Additionally, water absorption ratio was most rapidly changed between $1000^{\circ}C$ and $1200^{\circ}C$Thirdly, in the microstructural analysis, body of samples in first firing have not specific characteristics in the changed patterns of microstructure. body and glaze of samples in second firing have many that. Consequently, we knew that this experiment can be provided researcher with physical properties and firing mechanisms of celadon.

• 대한안전경영과학회지
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• 제7권4호
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• pp.229-248
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• 2005

The purpose of this study is to identify the best firing condition for Celadon, which is one of the famous traditional pottery to represent Korean culture, by minimizing energy consumption, cutting firing time, shortening the time of processing ceramic making, in order to, save energy as well as to protect the potters' health. Most Korean potter starts their reduction from $950^{\circ}C$ to change kiln atmosphere. However on this study, reduction have started from $950^{\circ}C\;to\;1200^{\circ}C$ by increasing $50^{\circ}C$ at a time. Then the results are analyzed to be compared to previous Celadon, in colors, chroma, and brightness. As a results, it is found, that the best temperature for starting reduction is $1100^{\circ}C$, when chroma and brightness values to meet same with previous celadon. Therefore the best condition could be made by starting the reduction on $1100^{\circ}C$ to fire celadon, which would have shorten 2 hours of firing process and, at the same time, it could have saved the energy by 12%.

• 대한간호학회지
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• 제32권5호
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• pp.654-664
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• 2002

The purpose of this study was to identify the burden, health promotion behavior and health status and to describe the relationship of the burden, health promotion behavior and health status of the family caregivers of intensive care unit patients. Method: The subjects were 48 family caregivers of ICU patients in a University Hospital. Data were collected between June, 1 and July, 31, 2000 using structured questionnaires. Research tools used were Suh and Oh's Burden Scale, Revised Walker, Sechrist, & Pender's HPLP(1987) ; Revised Nam's Health State Scale(1965). Result: The mean score of burden of family caregiver was 3.01(full score was 5). The mean score of health promotion behavior of family caregiver was 2.52(full score was 4). And the mean score of health status of family caregiver was 0.68(full score was 1.00). The score of psychological health state was a little higher than the physiological one. In correlational analysis, the burden and the health status of caregivers were reversely correlated . The correlation between the burden and the health promotion behavior, and the health behavior and health status were not significant. Conclusion: The more burden caregivers of ICU patients felt, the worse their health status. So nurses need to understand the family caregiver's burden and apply nursing care that can reduce burden, in order to improve the health status of family caregivers.

• 한국음향학회:학술대회논문집
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• 한국음향학회 2002년도 하계학술발표대회 논문집 제21권 1호
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• pp.77-82
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• 2002

운율은 음성의 초분절적인 면에 연관하는 음성의 한 성으로서 통상적으로 화자는 음성을 달하는 과정에서 청자의 이해를 돕기 위해 운율을 사용하게 된다. 본 논문은 이러한 운율을 이루는 성분 중의 하나인 운율구의 위치 예측에 대한 성능을 향상시키는 것에 그 목적을 둔다. 한국어 운율 정보에 대한 표기 방법 중의 하나인 K-ToBI를 기반으로 하여, 운율구의 경계와 그에 대한 레벨을 Break Indices 정보로서 나타내었고, 통계학 분야에서 제안된 Support Vector Machine(SVM)을 이용하여 시스템의 예측률 향상을 꾀하였다. 기존의 방법에서 사용된 트리 기반 모델을 이용하여 한국어 운율에 가장 많은 영향을 끼치는 언어 정보들을 추출하였고 이를 실험에 적용하였다. 기존의 트리 모델과 SVM 모델에 대한 예측률을 비교한 결과, 경계 유무 정보 예측과 4단계의 레벨을 가지는 경계 정보의 예측에서 모두 본 방법이 보다 높은 예측률을 보여 주어 본 연구에서 제시한 접근법이 운율구의 경계 정보를 예측하는 데에 있어 더욱 효과적인 접근법임을 실험적으로 입증하였다.

• 대한건축학회논문집:계획계
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• 제35권7호
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• pp.101-108
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• 2019

In this research, I conducted a semantic network analysis centering on media articles on purchasing, revitalizing, and utilizing the former Busan branch of Hansung Bank, a modern architectural heritage. We sought the most efficient analysis elements for the analysis of the social arguments about preservation and utilization embedded in media articles. For this reason, Degree Centrality measures how many connections the word described in the media article has, and Betweenness Centrality measures the influence that controls the flow of information through correlation I examined. In addition, keyword that express the theme well examined the aggregation structure in each sub-network. In this research, in theoretical terms, it makes sense in that the social discussion embedded in the article of the mass media is grasped empirically through semantic network analysis of words. Methodological aspect is best when it includes nouns and adjectives and the distance between words is more than four words in the analysis of the cohesive structure of the semantic network to determine whether the influence of social discussions is best assessed through the connection between words to media articles.