• 대한가정학회지
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• 제24권2호
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• pp.1-11
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• 1986

The subject, in the blouses that sleeve caps and sleeve lengthes are different from, did sensory test by right arm movement and both arms movement. This sensory test which is used in fabric good, is Shef's. RESULTS : 1) The ease of bust size is very significant by cap height, at 5%, 1% level by sleeve length. 2) The front area of arm hole is affected by cap height, sleeve length movements more than the back and the under area of arm hole are 3) Sleeve width is affected by cap height, sleeve length both arms movement. That is, they should be designed according to the use because they affect the ease of blouse very much. Especially bust size should be considered with sleeve pattern because the ease bust becomes different with sleeve pattern.

• 한국콘텐츠학회논문지
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• 제18권5호
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• pp.34-45
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• 2018

한국에는 사행성과 관련하여 독특한 제도가 다수 존재하는데, 그중 대표적인 사행성 규제가 사행산업 총량제이다. 사행산업 총량제는 사행산업 전체의 매출액을 경제 규모의 일정 수준 내로 한정하고자 하는 규제로 외국에서 예를 찾기 힘든 독특한 규제이다. 이러한 사행산업 총량제는 2009년부터 실시되어 현재까지 지속되고 있다. 본 연구는 사행산업 총량제가 실시된 이후 한국의 사행산업 구조가 어떻게 변화하였는지를 살펴보고자 한다. 사행산업 총량제 실시 이후 사행산업 구조 변화를 살펴본 결과, 첫째, 사행산업 총량제 도입 이후에는 사행산업 매출 변화량이 감소하였고, 매출 증가율이 GDP 증가율과 거의 유사하게 변화한다. 둘째, 사행산업 총량제 도입 이전에는 사행산업의 독점도가 크게 감소하는 추세였으나 사행산업 총량제가 도입되면서 사행산업의 독점도가 안정되었다. 즉, 사행산업의 경쟁 구도가 고착화되는 현상이 나타나고 있다는 것을 의미한다. 셋째, 사행산업 각 종목별로도 매출액 변화가 거의 이루어지지 않고 안정적인 추세를 보였다. 결론적으로 사행산업 총량제는 사행산업의 구조를 고착화하고 변화가 적은 정체 시장으로 변화시켰다. 사행산업 총량제는 사행산업 간 경쟁을 막으며, 성장도 쇠퇴도 없는 고정적 산업 구조를 만드는 효과를 가진다.

• KIEE International Transactions on Electrophysics and Applications
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• 제3C권5호
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• pp.165-170
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• 2003

This paper presents development of solid core suspension disc insulators (cap and cap suspension disc insulator) for replacing cap and pin suspension disc insulators in overhead transmission and distribution lines which expose to lightning discharges. By this means the punctured problem caused by steep front surge voltage created by lightning discharge on the lines can be solved. The solid core suspension insulator was designed and constructed based on the dimensions of conventional suspension disc insulators (cap and pin insulators). The insulators are made of alumina porcelain. The electrical and mechanical characteristics of the solid core suspension insulators were carried out. The puncture test was performed in the air by applying steep front impulse voltage with amplitude about 2.5 per unit of 50% flashover (CFO) of the insulator unit at negative standard lightning impulse $1.2/50\;\mu\textrm{s}$ with steepness up to $9200\;kV/\mu\textrm{s}$. The testing results show that solid core suspension disc insulators are not punctured eventhough the steepness of the steep front impulse voltage was increased up to $9200\;kV/\mu\textrm{s}$.

• 한국전자통신학회논문지
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• 제13권5호
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• pp.995-1002
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• 2018

우선 순위 기반 MAC프로토콜에서 경쟁이 심한 경쟁접근구간은 더 많은 수의 충돌 및 재전송을 초래할 수 있다. 경쟁접근구간 동안 우선순위가 높은 트래픽은 우선순위가 낮은 트래픽을 지배하여 우선 순위가 낮은 트래픽이 고갈되어 WBAN 처리량, 지연 및 에너지 소비에 악영향을 미친다. 따라서 본 논문에서는 우선 순위가 낮은 트래픽에 대한 공정한 기회를 제공하기 위해 경쟁접근구간에서 경쟁을 줄이는 응급데이터-퍼스트-우선 순위 MAC(: EFP-MAC) 슈퍼 프레임 구조를 제안한다. 시뮬레이션 결과는 제안 된 EFP-MAC이 IEEE 802.15.4 표준에 비해 낮은 에너지 소비, 높은 처리량 및 낮은 대기 시간을 달성함을 보인다.

• Tuberculosis and Respiratory Diseases
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• 제81권3호
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• pp.175-186
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• 2018

Pneumonia is an important cause of morbidity and mortality. Since 2014, the Health Insurance Review and Assessment Service (HIRA) has assessed the overall quality of care among hospitalized adult patients with community-acquired pneumonia (CAP) provided by all medical institutions in Korea. A committee of the Korea Academy of Tuberculosis and Respiratory Diseases developed the hospital inpatient quality measures set for CAP consisting of eight core measures and five monitoring measures. The composite measure score was calculated. The medical records of hospitalized adult patients ages 18 years or more with CAP from October to December 2014 were evaluated. The data of 523 hospitals (42 tertiary hospitals [8.0%], 256 general hospitals [49%], and 225 hospitals [43.0%]) and 15,432 cases (tertiary hospitals, 1,673 cases [10.8%]; general hospitals, 8,803 cases [57.1%]; hospitals, 4,956 cases [32.1%]) were analyzed. We found large variations among institutions in terms of performance of care measures for CAP. For the composite measure score, the mean value was 66.7 (tertiary hospitals, 98.5; general hospitals, 79.2; hospitals, 43.8). Despite significant differences in measure scores between tertiary, general hospitals and hospitals, no significant differences were found in mortality between hospitals. Further studies are needed to determine the care measures appropriate for CAP.

• 유체기계공업학회:학술대회논문집
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• 유체기계공업학회 2005년도 연구개발 발표회 논문집
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• pp.663-669
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• 2005

Performance characteristics of an axial flow fan having distorted inlet flow have been investigated using numerical analysis as well as experiment. Two kinds of hub-cap, round shape and right-angled front shape, are tested to investigate the effect of inlet flow distortion on the fan performance. In case of right-angled front shape, axisymmetric distorted inflow is induced by flow separation at the sharp edge of hub-cap, and the characteristics of the inflow depends on the distance between hub-cap and blade leading edge. Flow analysis of the blade passage is peformed by solving the three-dimensional Reynolds-averaged Navier-Stokes equations. numerical solutions are validated in comparison with experimental data measured by a five-hole probe downstream of the fan rotor. It is found from the numerical results that non-uniform axial inlet velocity profile near the hub results in the change of inlet flowangle. The changed inlet flow angle near the hub invokesa flow separation on the blade surfaces, thus deteriorating the fan efficiency. The effect of the distance between hub-cap and blade leading edge on the efficiency is also discussed.

• 경영과정보연구
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• 제26권
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• pp.293-309
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• 2008

This study examined the market efficiency of korea stock market by comparing variance ratios(VR) of stock groups which is sorted by market capitalization. We compute variance ratios of KOSPI large capitalization, midium capitalization, and small capitalization for 546 trading days from 2006/01/02 to 2008/04/15. For our study, we also use high frequency data that is; intra-day 1 minute data. The characteristics of variance ratios of stock groups by market capitalization as follows: From 1 to 5 minute interval, variance ratios of three stock group increase far from zero(0). The longer time interval, the more variance ratios decrease, but only large capitalization converge on around zero. This means that the market of large capitalization is more efficient compare to other stock groups. The entire sample period can be divided two sub-period because the impact of sub prime crisis arised from U.S.A. influences Korea stock market. Before sub prime crisis, the VRs of mid cap and small cap do not converge on around zero except large cap although the time interval is longer. After sub prime crisis, the VRs of three stock groups decrease when time interval is longer, but only large cap converge on around zero. We conclude that large cap is more efficient than other stock groups in Korea Stock Market.

• Journal of Welding and Joining
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• 제9권4호
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• pp.60-68
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• 1991

The weld quality of end cap welds in Pressurized Heavy Water Reactor (PHWR) Fuel is extremely important for the fuel performance in the nuclear reactor. The quality of resistance upset welds is currently evaluated mainly by the metallographic examination although it reveals only two weld cross-sections in a circumference welds. This investigation was, firstly, carried out to determine whether the ultrasonic examination would be applied to detect weld defects in the end cap welds and, secondly, to measure the mechanical strength of upset butt welds as a function of phase shift percentage. The major results obtained in this study are as follows: 1. The weld current and amount of upset shrinkage linearly increased with increasing the phase shift percentage. 2. Above the phase shift 55%, the defects in the welds were completely eliminated with increasing the phase of sound weld was over the thickness of cladding tube. 3. The ultrasonic testing well detected such defects in the end cap welds as upset external crack, upset split, corner crack and irregular weld flash comparing with the results of metallography. 4. The micro-fissure in the corner of the end cap welds was reliably detected by ultrasonic testing. 5. The mechanical strength in the welds increased with increasing phase shift percentage but the fracture did't occur in the welds above 55%.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2000년도 춘계 학술대회 논문집 통권 3호 Proceedings of the 2000 KSRS Spring Meeting
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• pp.108-113
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• 2000

1991년 5월 31일, 1996년 9월 1일 그리고 1997년 6월 17일의 Landsat TM 위성화상자료를 Tasseled Cap 변환을 통하여 추출되는 4번째 특징을 연무지수농도로 사용할 수 있는가를 알아보고 또한 이렇게 산출된 연무지수를 사용하여 각 일자별 대기오염측정인자와 기상측정인자와 비교하고 서울시 각 행정구별 연무현상에 대하여 알아보았다. 동일화상내에서 연무가 있는 삼림지역과 연무가 없는 삼림지역을 표본조사하여 검정한 결과 Tasseled Cap 변환의 4번째 특징이 연무지수와 관련되어 있음을 밝혔고 기상측정 인자의 시정거리와 연무지수사이의 역상관의 경향이 있음을 확인하엿다. 대기오염측정 인자의 경우 정확한 연관성을 파악하지는 못하였는데 이는 연무현상이 대기오염 물질의 2차 생성물에 의한 것으로 추정된다. 각 날자에서 1991년 5월 31일과 1997년 6월 17일 서울에 연무현상이 있음을 확인하였고 대체적으로 날짜에 상관 없이 중구, 종로구, 강남구, 서초구에서 높은 연무지수를 나타내었다.

• Kidney Research and Clinical Practice
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• 제36권1호
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• pp.48-57
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• 2017

Background: Hepatic steatosis measured with controlled attenuation parameter (CAP) using transient elastography predicts metabolic syndrome in the general population. We investigated whether CAP predicted metabolic syndrome in chronic kidney disease patients. Methods: CAP was measured with transient elastography in 465 predialysis chronic kidney disease patients (mean age, 57.5 years). Results: The median CAP value was 239 (202-274) dB/m. In 195 (41.9%) patients with metabolic syndrome, diabetes mellitus was more prevalent (105 [53.8%] vs. 71 [26.3%], P < 0.001), with significantly increased urine albumin-to-creatinine ratio (184 [38-706] vs. 56 [16-408] mg/g Cr, P = 0.003), high sensitivity C-reactive protein levels (5.4 [1.4-28.2] vs. 1.7 [0.6-9.9] mg/L, P < 0.001), and CAP (248 [210-302] vs. 226 [196-259] dB/m, P < 0.001). In multiple linear regression analysis, CAP was independently related to body mass index (${\beta}=0.742$, P < 0.001), triglyceride levels (${\beta}=2.034$, P < 0.001), estimated glomerular filtration rate (${\beta}=0.316$, P = 0.001), serum albumin (${\beta}=1.386$, P < 0.001), alanine aminotransferase (${\beta}=0.064$, P = 0.029), and total bilirubin (${\beta}=-0.881$, P = 0.009). In multiple logistic regression analysis, increased CAP was independently associated with increased metabolic syndrome risk (per 10 dB/m increase; odds ratio, 1.093; 95% confidence interval, 1.009-1.183; P = 0.029) even after adjusting for multiple confounding factors. Conclusion: Increased CAP measured with transient elastography significantly correlated with and could predict increased metabolic syndrome risk in chronic kidney disease patients.