• Science of Emotion and Sensibility
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• v.9 no.1
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• pp.27-38
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• 2006

In the planning stage of mobile phone development, one of the most important considerations is to select a FormFactor properly to determine the strategy and Purpose of a Product. Up to now, the FormFactor has been selected only by intuitional and qualitative methods. In this study, the Appraisal Methodology using Sensibility Adjectives of Emotion and Sensibility Engineering was presented to suggest the systematic and rational framework in the field of FormFactor selection. First, we verified the conceptual FormFactors with Axiomatic Design and classified the Sensibility Adjectives into the verified FormFactors. When the FormFactor and classified Design Parameters (DP) were given to a designer, the designer implemented the preliminary designs and they were assessed and analyzed by the survey. With these processes, we were able to select the proper designs for FormFactors which were fit for the purpose of a product. This was caused by connecting the Axiomatic Design and tile Sensibility Adjectives. This study gave the possibilities that can be spread to the selection factors, except for the FormFactor, from now on.

• Proceedings of the Korea Water Resources Association Conference
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• 1980.08a
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• pp.51-52
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• 1980

하천형태학적 특성은 유역의 수문학적 특성 및 수리학적 특성과 밀접한 관계를 가진다. 본 논문은 하천형태학적 특성과 빈도유량 및 하도의 수리기하학적 특성간의 상관성을 금강수계를 대상으로 분석하였으며 이들 연구의 목적은 미계측지점에 대한 이수계획을 수립하는데 필요한 자료를 제공하는데 있다. 금강수계의 하천형태학적 특성분석은 Horton의 하천차수개념을 이용하여 하천지형의 3대 법칙에 의하여 분석하였으며 분석결과는 Horton의 법칙과 잘 일치하였다. 또한 유역특성과 수로특성간의 상관분석인 하천연장-유역면적관계와 상대고도-상대고도관계분석에서도 밀접한 상관성을 보여 주었다. 금강수계내의 5개수위표 지점에서 생기빈도 0.1~0.9의 유량자료를 사용하여 얻는 각 지점의 유량빈도곡선은 대체로 지수함수관계로 표시할 수 있었다. 하천형태학적 특성을 연속적으로 표시하기 위하여 비례하천차수를 도입하였으며 이를 이용하여 유량 = 생기빈도 - 비례하천차수간의 관계에 대한 수학적 모형을 정립하였다. 또한 서로 다른 두 축척에 따라 하천차수는 달라지나 하천형태학적 특성에 관한 Horton의 3대법칙에는 근본적으로 영향이 없음을 알 수 있었다. 유역의 하천형태학적 특성을 매개변수로 하여 빈도유량과 수리기하학적 인자간의 관계, 유역면적과 수리기하학적 인자간의 관계 및 연평균 유출용적과 수리기하학적 인자간의 관계를 분석하여 각각에 대한 수학적 모형을 제안하였다.

• Journal of the Korean Association of Geographic Information Studies
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• v.9 no.1
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• pp.13-19
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• 2006

In previous classification, forest recreation functions were evaluated by same factors and couldn't consider various characteristics of forest resources. The purpose of this study is to evaluate the recreational function of forest resources by applying different factors to each forest resources. We selected Daegu and Mt. Jiri as study area and divided forest resources into visitor-oriented and forest-oriented recreational resources. The level of recreational functions were evaluated with three grade(low, medium, high). In consequence, our study found out that it is more effective to evaluate forest recreational function by applying accessibility and attraction factors to each forest resources than previous work.

• The Journal of the Acoustical Society of Korea
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• v.42 no.3
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• pp.189-202
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• 2023

In this study, the acoustic performance was analyzed by architectural shapes of the hall. There are four architectural shapes of halls. They are rectangular, horseshoe, surround, and fan-shape. Eight acoustic parameters were used to determine the acoustic performance. These are RT₆₀, EDT, C₈₀, BQI, LF, G_mid, G₁₂₅ and ITDG. First, measurement data of famous concert halls around the world were analyzed. The correlation coefficient R was obtained by regression analysis of the relationship between the subjective ranking of the halls and the acoustic parameters. It was found that BQI, G, and ITDG have higher correlation coefficients R. Also the average of acoustic parameters for each architectural shape were obtained. The total acoustic performance for each shape was calculated by using the correlation coefficient R as a weight for each acoustic parameters. As a result, rectangular halls and horseshoe halls showed good acoustical performances. Second, 3D models of each architectural shape were created and acoustic simulation had been performed. The simulation was performed by creating 3D models of each four shapes of concert halls with the same volume and sound absorption coefficient. Listening test was carried out using the sound source which is created from impulse responses of 3D model. As a result, rectangular hall and horseshoe hall showed the best performance however surround hall and fan-shaped hall showed relatively poor performance.

• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.1593-1603
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• 2008

지오텍스타일 튜브의 봉합거동에 대한 이론연구와 실험을 수행하여 효율적인 봉합구조와 합리적인 설계 강도의 결정을 위한 방안을 고찰하였다. 수행 실험은 지오텍스타일 튜브 제품을 형성하기 위해 사용되는 봉합사에 대한 해수조건을 고려하여 내구성 평가와 봉합강도를 개선시키기 위해 다양한 봉합형태에 따른 봉합강도를 평가하여 고찰하였다. 지오텍스타일 튜브의 장기설계강도의 결정에서 지오텍스타일 자체의 강도 감소인자 뿐 아니라 봉합부에서의 여러 감소인자들을 고려하여야 하며 정확히 평가할 수 있는 시험규격의 정립이 요구된다. 봉합사의 강도가 유사한 경우 봉합형태가 봉합강도에 주요한 영향을 미치며, 봉합사의 봉합 후 긴장상태도 실험 중에 영향을 미치는 것으로 확인되었다.

• Proceedings of the Korean Fiber Society Conference
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• 2003.04a
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• pp.392-393
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• 2003

직물을 구성하는 기본 인자인 섬유의 단면 형태는 직물의 촉감, 광택, 투습성 등에 많은 영향을 미친다. 또한 최근 사용이 급증하고 있는 산업용 섬유제품과 부직포용 섬유제품 둥에서는 보다 더 직접적으로 섬유의 단면 형태가 제품의 비틀림 및 굽힘거동에 직접적인 영향을 미친다. 본 연구에서는 섬유의 단면 형태를 general cardioid, 즉 극좌표 형식으로 표현 하였을 경우 다음과 같다고 가정하였다. (중략)

• Water for future
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• v.14 no.1
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• pp.31-37
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• 1981

It was possible to synthesize the low flow frequency curves for ungauged stations of Geum river system through a correlation analysis using the morphological parameters such as basin area, bnsin relief, total stream length of first-order stream and the 7-day, 10-year low flow.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2003.09a
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• pp.318-321
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• 2003

비소로 오염된 토양, 하천 퇴적물 및 광미의 복원할 때, 토양 세척 공정에서 중요한 인자인 비소의 화학적 결합형태와 세척제에 따른 용출특성과 고효율 세척 및 세척액의 재활용도를 높이기 위한 공정을 바탕으로 토양세척장비를 설계하였다. 화학적 결합형태에 있어서 토양은 잔류 결합형태가 주되고, 퇴적물의 경우는 철산화물과의 결합형태가 강하며, 광미는 황화물과의 결합에 따른 잔류형태와 철산화물과의 결합형태가 상당부분을 차지한다. 세척제에 따른 용출특성으로부터, 철산화물과 황화물과 결합하고 있는 비소의 화학적 결합형태를 파괴하면서 비소를 추출할 수 있는 용제로 HCl, Oxalate, EDTA, M$_2$O$_2$를 사용하였다. 추출 결과, 비소가 철산화물과 결합한 형태가 비중이 높을수록 EDTA 나 Oxalate가 효율이 높으며, 황화물에 대해서는 HCl과 $H_2O$$_2$이 상대적으로 높은 추출 효율을 보였다. 구성된 세척조는 밀폐실린더형과 스크류이송형 세척조로 구성되어 각각 혼합교반에 의한 세척과 토양입자 분급에 따른 세척이 가능하다. 세척 공정중 최적 산도 조절이 중요한 인자가 되며, 세척액의 재활용도를 높일때, 세척수에 용해되어 있는 비소 및 중금속과 미립자의 동시 제거를 위한 응집 침전조에서 응집제에 의해서 미립자와 함께 제거하는 응집, 침전 및 분리공정을 배치하였다.

• Journal of Industrial Convergence
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• v.21 no.3
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• pp.171-179
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• 2023

To investigate the effects of type of exercise on inflammatory factor and vascular endothelial growth factor in middle aged women, we recruited 18 people middle-aged women and they divided into 3 groups (N=6, resistance exercise group, 40-60% of 1RM, N=6 aerobic exercise group, 60-70% of VO2max, N=6, flexibility exercise group, 10-60 sec/sets). The data were compared to the effect of exercise between 50 ~ 60 minutes per a day, 3 day times per week on the body composition, inflammatory factor, vascular endothelial growth factor and vascular compliance in middle aged women. First, in regards to inflammatory factors between groups, a significant difference (p<.05) was identified in the effects of CRP and IL-6 in terms of time (T). Second, regarding vascular endothelial growth factors between groups based on the type of exercise, a significant difference (p<.05) was found in the effects of VEGF's time (T) and the interaction between time and group (TxG). In conclusion, All types of exercise could partially improve inflammatory factors and vascular endothelial growth factors.

• Journal of radiological science and technology
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• v.39 no.3
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• pp.353-359
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• 2016

This study were to evaluate risk factors of GB polpy in Busan and Gyeongnam area. This study was performed with patients by abdominal ultrasonography among the patients who came to the P hospital from January to May 2016. Among them, risk factors were analyzed on 399 people at the same time when abdominal ultrasonography and hematological test. The statistical analysis of risk factors related to the GB ployp was performed by independent t-test and chi-square test. In consider of difference verification result for calculations odds ratio about independent variables, multiple logistic regression analysis to conduct verify adequacy by calculating forecasting model from variable. As a result, GB polyp risk factors have relevance to male, HBsAg positive, triglyceride. GB polyp risk factors confirmed to male, HBsAg positive, triglyceride were calculated forecasting model and forecasting probability value. Forecasting probability sensitivity 61.0%, specificity 76.8%, ROC area under curve 0.735 showed, it confirmed validity of forecasting model. When analyzing the GB polyps morphologically, among the GB polyp types observed from abdominal ultrasonography, the hyperechoic and homogeneous pattern with neck was the largest as shown from 27.5% and two GB polyps were shown most from 38%, sizes were shown most by maximum diameter, 5 to 10mm from 53%. As a disease accompany with GB polyp showed mild fatty liver(23%), diffuse hepatopathy(21%).