• 미생물학회지
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• 제40권2호
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• pp.178-182
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• 2004

Saccharomyces cerevisiae의 class I 키틴생합성 효소인 Chsl의 활성측정법을 적용하여 Aspergillus nidulans의 영양균사에서 class I 키틴생합성 효소인 ChsC의 활성측정을 시도하였다. 그 결과, A. nidulans의 class I 키틴생합성효소도 효모류의 경우와 마찬가지로 트립신 처리에 의하여 활성화되는 효소전구체형태(zymogenic form)로 존재함을 알 수 있었다. 그리고 A. nidulans 야생형의 class I 키틴 생합성 효소활성은 트립신 처리에 의하여 6배 가량 증가되었다. 반면, chsC 유전자가 파괴된 돌연변이주는 트립신 처리에 의하여 효소활성이 증가되지 아니하였을 뿐만 아니라, 효소활성의 수준도 트립신을 처리하지 아니한 야생형의 class I 키틴생합성 효소활성과 거의 동일한 수준이었다. 따라서, 트립신을 처리하여 측정한A. nidulans 야생형의 class I 키틴생합성 효소활성 값에서 트립신을 처리하지 아니한 야생형의 class I 키틴생합성 효소활성을 제외한 값이 A. nidulans 야생형의 ChsC 효소활성임을 알았다. 이러한 조건을 토대로 영양균사 생장과정 동안 ChsC의 효소활성을 측정한 결과, chsC 유전자의 발현양상과 유사하게 액체배양상태의 영양균사가 무성분화능을 획득하는 시기로 알려진 시간대에 효소의 활성이 증가하였다. 이러한 결과는 이미 보고된 바와 같이 chs 유전자가 A. nidulans의 영양균사 생장에 관여함을 시사하고 있다.

• 대한수학회논문집
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• 제33권4호
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• pp.1171-1180
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• 2018

In this paper, we prove that boundedness with respect to metric balls of weighted composition operators from the Kim class and the Smirnov class to weighted Bloch type spaces is equivalent to metrical compactness of weighted composition operators between these spaces.

• 대한수학회보
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• 제48권2호
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• pp.223-245
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• 2011

In this paper, we de ne an $L_p$ analytic generalized Fourier Feynman transform and a convolution product of functionals in a Ba-nach algebra $\cal{F}$($C_{a,b}$[0, T]) which is called the Fresnel type class, and in more general class $\cal{F}_{A_1;A_2}$ of functionals de ned on general functio space $C_{a,b}$[0, T] rather than on classical Wiener space. Also we obtain some relationships between the $L_p$ analytic generalized Fourier-Feynman transform and convolution product for functionals in $\cal{F}$($C_{a,b}$[0, T]) and in $\cal{F}_{A_1,A_2}$.

• 대한의용생체공학회:의공학회지
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• 제31권4호
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• pp.328-334
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• 2010

Over the past few years, a considerable number of methods have been proposed and applied for the classification of photoplethysmography (PPG). Most of the previous studies, however, focused on the qualitative description of the pulse type according to specific disease and thus provided ambiguous criteria to interpreters. In order to screen out this problem, we present a quantitative method for the pulse type classification including the second derivative of photoplethysmography (SDPTG). In the PPG signal, we have classified the signal as 4 types using the position and the presence of the dicrotic wave. In addition, we have categorized the SDPTG signal as 7 types using the position and the presence of "c" and "d" wave and the sign of "c" wave. In order to check the efficacy of the proposed pulse type classification rule, we collected pulse signals from 155 subjects with different ages and sex. From the correlation analysis, Class 1(p<0.01) and Class 2(p<0.01) in the PPG signal are significantly correlated with ages. In a similar manner Class A(p<0.01), Class C(p<0.05), Class D(p<0.01), and Class F(p<0.01) in the SDPTG signal are considerably correlated with the ages. From these observations, and some earlier ones [4], [5], we can conclude that since the newly proposed method has objectivity and clarity in pulse type classification, this method can be used as an alternative of previous classification rules including similar age-related characteristics.

• 콘크리트학회논문집
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• 제16권1호
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• pp.130-138
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• 2004

The primary factors that affecting concrete sulfate resistance are the chemistry of the Portland cement and the chemistryandreplacementlevelofmineraladmixtures. In order to investigate the effect of those on the sulfate attack the testing program involved the testing of several different mortar mixes using the standardized test, ASTM C 1012. four different cements were evaluated including one Type I cement, two Type I-II cements, and one Type V cement. Mortar mixes were also made with mineral admixtures as each cement was combined with three different types of mineral admixtures. One Class F fly ash and one Class C fly ash was added in various percent volumetric replacement levels. The expansion measurements of mortar bars were taken and compared with expansion criteria recommended from past experience to investigate the effect of each factor.

• 대한수학회논문집
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• 제26권2호
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• pp.273-289
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• 2011

In this paper we dene the concept of a conditional generalized Fourier-Feynman transform on very general function space $C_{a,b}$[0, T]. We then establish the existence of the conditional generalized Fourier-Feynman transform for functionals in a Fresnel type class. We also obtain several results involving the conditional transform. Finally we present functionals to apply our results. The functionals arise naturally in Feynman integration theories and quantum mechanics.

• 대한수학회논문집
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• 제35권3호
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• pp.759-771
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• 2020

In this article, a hybrid class of the q-Hermite based Apostol type Frobenius-Genocchi polynomials is introduced by means of generating function and series representation. Several important formulas and recurrence relations for these polynomials are derived via different generating function methods. Furthermore, we consider some relationships for q-Hermite based Apostol type Frobenius-Genocchi polynomials of order α associated with q-Apostol Bernoulli polynomials, q-Apostol Euler polynomials and q-Apostol Genocchi polynomials.

• 전기학회논문지
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• 제61권2호
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• pp.347-353
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• 2012

In this paper, authors will develop the quick and precise remote controller of automatic fire detection equipment (P-type one-class receiver) based on information communication technology (IT). The remote controller detects the fire and disaster in the building automatically and quickly and then activates the facilities to extinguish the fire and disaster, monitoring such situation in a real time through wire-wireless communication network. The proposed remote controller is applied a programmable logic device (PLD) micom. of one-chip type which is small size and lightweight and also has highly sensitive-precise reliabilities. The one-chip type PLD micom. analyzes digital signals from sensors, then activates fire extinguishing facilities for alarm and rapid suppression in a case of fire and disaster. The detected data is also transferred to a remote situation room through wire-wireless network of RS232c and bluetooth communication, and then the situation room sends an emergency alarm signal. The automatic fire detection equipment (AFDE) based on IT will minimize the life and wealth loss while prevents fire and disaster.

• 대한수학회논문집
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• 제35권4호
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• pp.1123-1132
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• 2020

In the present paper, we define new class of functions T_α,β(λ; z) which is an extension of the classical Wright function and the Mittag-Leffler function. We show some mean value inequalities for the this function, such as Turán-type inequalities, Lazarević-type inequalities and Wilker-type inequalities. Moreover, integrals formula and integral inequality for the function T_α,β(λ; z) are presented.

• Advances in pediatric surgery
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• 제1권2호
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• pp.140-148
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• 1995

저자들은 96예의 선천성 식도 폐쇄를 분석하여 다음의 결과를 얻었다. 1) 남녀비는 1.1:1로 비슷하였다. 2) 출생시 평균 체중은 2.8kg 였고 2.5kg 미만의 저출생 체중아가 32.3%를 차지했다. 3) 주증상은 타액 분비 과다, 수유시 호흡 곤란, 청색증 등이었다. 4) Gross 분류법에 의한 해부학적 유형은 Type C가 가장 많은 빈도로 관찰되었다(82.3%). 5) 동반 선천성 기형이 35%에서 관찰되었고 이 중 심장 기형이 가장 많은 빈도로 관찰되었다(60%). 6) 수술은 Type A, C의 경우 일차적 문합을 시행하였고 일차적 문합이 불가능한 원간격 결손 환아에서 역위관 삽입술이 시행되었다. Type E(H-type)의 경우 식도기관루 절제술이, Type F의 경우 식도협착부위 절제 및 단단 문합술이 시행되었다. 7) 수술후 주요 합병증은 문합부 누출, 문합부 협착, 기관 식도루 재발 등이었다. 8) 생존율은 86%였고 Waterston Criteria에 따른 생존율은 Class A, 93%, Class B, 86%, Class, 58%였다. 9) 추적 조사 결과 93%의 환아가 건강했고 7%의 환아가 잦은 호흡기 감염으로 입원한 병력이 있었다.