• 대한핵의학회지
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• 제9권2호
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• pp.13-22
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• 1975

The purpose of the present study is to evaluate the diagnostic value of the ETR test as compared to other thyroid function tests in normal persons, patients with thyroid disorders and patients with alterations of thyroxine-binding proteins. The ETR values were obtained from 35 cases as normal control, 63 hyperthyroid patients, 56 euthyroid patients, 23 hypothyroid patients, 10 pregnant women, 5 women taking oral contraceptive medication, 8 liver cirrhosis patients and 4 nephrotic syndrome patients. The results obtained were as follows. 1. The mean value of ETR obtained from the normal controls was $0.99{\pm}0.06$. 2. The mean ETR values of various thyroid states were $1.25{\pm}0.16$ in hyperthyroidism, $0.99{\pm}0.08$ in euthyroidism and $0.82{\pm}0.05$ in hypothyroidism and significant difference was found between these groups. 3. Seven out of 63 hyperthyroid patients(11.1%) and 2 out of 23 hypothyroid patients(8.7%) had ETR values within normal range and among the 56 euthyroid patients 6(10.7%) had ETR values outside normal range, so the diagnostic compatibility of ETR was 89.4% in thyroid diseases. 4. Even though the ETR value was well correlated with $^{131}I$-thyroid uptake rate, serum $T_3$ resin uptake rate and serum $T_4$, a high positive correlation was found (r=0.79) between ETR and $T_7$. 5. The mean ETR values from patients with alteration in TBG binding capacity were $0.99{\pm}0.05$ in pregnant women, $0.98{\pm}0.04$ in women with oral contraceptive medication, $1.04{\pm}0.09$ in liver cirrhosis patients and $0.94{\pm}0.02$ in nephrotic syndrome patients and most of them (85.2%) had ETR values within normal range. Our results, therefore, suggests that the ETR estimation does offer the simplest and most reliable single procedure for the screening and diagnosis of various thyroid diseases as a indirect indicator of serum-free thyroxine concentration without essential influence of changes in the thyroxine-binding proteins in serum.

• Clinical and Experimental Pediatrics
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• 제45권12호
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• pp.1484-1490
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• 2002

목 적 : 최근 소아 및 청소년의 비만은 증가하고 있으며 이러한 비만은 여러 가지 합병증이 동반될 수 있다. 본 연구에서는 서울지역 청소년에서 비만과 간효소치 및 총콜레스테롤치 이상의 유병율을 알아보고자 하였다. 방 법: 2001년도에 실시된 서울지역 청소년들의 건강 관련 지표 조사에서 실시된 서울지역 고등학교 1학년생 약 3만명의 종합 신체검사 결과 중 유효분석 대상 26,876명(남자 13,287명; 여자 13,589명)의 서울특별시 학교보건원의 검사 결과를 대상으로 하여 BMI의 분포를 남녀별로 알아보고 이들을 정상체중군(BMI 25 백분위수 이상-75 백분위수 이하)과 비만군(BMI 95 백분위수 이상)으로 분류하여 이들에 있어서 간효소인 혈청 AST, ALT 및 총콜레스테롤 이상의 유병율을 분석하였다. 결 과: AST 이상자는 남아에서 비만군 168명(23.7%)과 정상체중군 317명(3.7%)이었으며 여아에서는 79명(11.8%)과 334명(4.9%)으로 남녀 모두 비만군에서 정상 체중군보다 높았다(P<0.01, $x^2-value$; 남아 529.2, 여아 56.3). ALT 이상자는 남아에서 241명(33.9%)과 149명(1.7%), 여아에서는 149명(22.3%)과 264명(3.9%)으로 특히 남아에서 비만군의 이상자 비율이 정상체중군에 비해 20배 가량 높았다(P<0.01, $x^2-value$; 남아 1,693.4, 여아 397.6). 총콜레스테롤 이상자는 남아에서 119명(16.8%)과 300명(3.5%), 여아에서는 69명(9.0%)과 371명(5.4%)으로 비만군이 정상 체중군에 비해 높았다(P<0.01, $x^2-value$; 남아 268.3, 여아 14.2). 비만군의 경우 남자에서 여자보다 AST, ALT 및 총콜레스테롤의 이상자 비율이 높았다(P<0.01). 결 론 : 비만 청소년에서 간기능 효소의 이상과 총 콜레스테롤 이상의 유병율이 높으며 이러한 경우 지방간, 고지혈증 등의 합병증의 가능성이 높으므로 체중 감량 등을 통한 적극적인 예방과 치료가 필요하다.

• 한국환경보건학회지
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• 제7권1호
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• pp.59-62
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• 1981

We have performed 324 specimens' urobilinogen determinations(Healthy normal 219 & out-or in-patients 105) for the purposs of defining accurate & precise methods in semi-quantitative techniques. As shown on Table 1 through 5 & Fig.1 to 3, normal person's titer is concentrated in 1:40, 1:80, 1:20 & 1:10 respectively and majority of patients' titer is 160. The concentration diagram on Fig. 2 is seen for the normal person and patient's titer is nearly normal distribution scattered from 0.475mg/dl of median throughout the whole area (0.225-0.625). From Fig. 5 I have found that semi-quantitative titer is much different from the true value by electrical measurements. I am proposing of taking photoelectric quantitative methods for semiquantitative methods.

• 품질경영학회지
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• 제26권3호
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• pp.60-70
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• 1998

When driving the expected loss generated by the quality deviation, Taguchi(1991b) assumed that an objective characteristic has the uniform distribution in its control limit. But it is reasonable to assume that an objective characteristic has the normal distribution than the uniform distribution. Since the triangular distribution is similar to the normal distribution and easy to handle as well, in this article, we first find the optimum measurement interval and the optimum control limit under the triangular distribution. Under the normal assumption, the modified method is compared to Taguchi's. Secondly we find the numerical value solution of the optimum measurement interval and the optimum control limit under the normal distribution.

• Korea-Australia Rheology Journal
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• 제11권3호
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• pp.225-232
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• 1999

This study presents 1-dimensional simple model for sheet casting or rectangular fiber spinning process. In order to achieve this goal, we introduce the concept of force flux balance at the die exit, which assigns for the extensional flow outside the die the initial condition containing the information of shear flow history inside the die. With the Leonov constitutive equation that predicts non-vanishing second normal stress difference in shear flow, we are able to describe the anisotropic swelling behavior of the extrudate at least qualitatively. In other words, the negative value of the second normal stress difference causes thickness swelling much higher than width of extrudate. This result implies the importance of choosing the rheological model in the analysis of polymer processing operations, since the constitutive equation with the vanishing second normal stress difference is shown to exhibit the characteristic of isotropic swelling, that is, the thickness swell ratio always equal to the ratio in width direction.

• 대한안전경영과학회지
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• 제3권3호
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• pp.175-190
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• 2001

We propose, a new process capability index $C_{psk}$(WV) applying the weighted variance control charting method for non-normally distributed. The main idea of the weighted variance method(WVM) is to divide a skewed or asymmetric distribution into two normal distributions from its mean to create two new distributions which have the same mean but different standard deviations. In this paper we propose an example, a distributions generated from the Johnson family of distributions, to demonstrate how the weighted variance-based process capability indices perform in comparison with another two non-normal methods, namely the Clements and the Wright methods. This example shows that the weighted valiance-based indices are more consistent than the other two methods in terms of sensitivity to departure to the process mean/median from the target value for non-normal processes. Second method show using the percentage nonconforming by the Pearson, Johnson and Burr systems. This example shows a little difference between the Pearson system and Burr system, but Johnson system underestimated than the two systems for process capability.

• 대한기계학회논문집
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• 제8권5호
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• pp.401-407
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• 1984

본 연구에서는 구속공구 및 정상공구에 대하여 공구경사면의 전단응력과 수직 응력을 해석하고 칩 유동시의 마찰계수분포를 검토하였다.

• Kyungpook Mathematical Journal
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• 제52권1호
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• pp.39-47
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• 2012

Let $\mathcal{F}$ be a family of meromorphic functions in a domain D, and let $k$, $n({\geq}2)$ be two positive integers, and let $S=\{a_1,a_2,{\ldots},a_n\}$, where $a_1$, $a_2$, ${\ldots}$, $a_n$ are distinct finite complex numbers. If for each $f{\in}\mathcal{F}$, all zeros of $f$ have multiplicity at least $k+1$, $f$ and $G(f)$ share the set $S$ in $D$, where $G(f)=P(f^{(k)})+H(f)$ is a differential polynomial of $f$, then$\mathcal{F}$ is normal in $D$.

• 대한치과의사협회지
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• 제10권10호
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• pp.693-695
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• 1972

The authors had observed the clinical blood findings of dental patients. Sampling of studies was 187 persons coming in Infirmary of Dental College. Seoul National University. The purpose of this study was compare with normal American blood findings and Korean dental patient's blood findings. The results were as follows: 1. The average values of clinical blood findings dental patients were decreased to the normal values of normal American. 2. White blood cells were not increased in dental patients. 3. The number of lymphocytes was more increased to normal American's blood value.

• 한국군사과학기술학회지
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• 제17권2호
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• pp.204-212
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• 2014

The purpose of this paper is to investigate the effects of calibration rounds on the statistical distribution of the muzzle velocity in acceptance test of propelling charge. It is shown that the normal distribution fits best among statistical distributions from goodness-of fit test. The 3p-Weibull distribution is also acceptable because the shape of the probability density function curve is similar to that of normal distribution and it also has near zero skewness value. Muzzle velocities of test rounds uncompensated by calibration rounds showed high variation and had comparatively higher skewness. Because the skewness of normal distribution is defined to be zero, calibration rounds make the normality of data higher.