• 한국전자거래학회지
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• 제9권4호
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• pp.53-64
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• 2004

최근의 기업들은 B2B전자상거래 개념하에 상품과서비스를 전자적으로 거래하기 위하여 자신의 기업 영역을 넘어서는 프로세스를 수행하고 있다. 이러한 환경에서, 조직간의 비즈니스 프로세스는 필요하며 파트너간의 공개 프로세스 뿐만 아니라 기업 내의 자체 프로세스도 잘 정의되어야 한다. 이러한 목적을 위해 이 논문은 조직간 비즈니스 프로세스를 나타내는 방법을 제시한다. 우선, B2B 전자상거래를 위한 조직간 워크플로우를 위한 모델링 방법을 제시한다. 이 방법은 1:1 및 1:N 협업시 공통 프로세스를 공유할 수 있도록 ebXML의 BPSS를 기반으로 제시되었다. 여기서 조직간 워크플로우의 설계 절차를 편리하게 하기 위해 메시지 플로우와 통제 플로우를 분리하였다. 둘째, 구조화된(well-structured) 조직간 워크플로우 프로세스를 설계하기 위하여 구조화된 프로세스 모델링 알고리즘이 제시된다. 이 알고리즘에서는 프로세스가 페트리넷 기반의 프로세스로 변환된다. 이 알고리즘은 하향식 방식으로 구조화된 프로세스 모델을 설계할 수 있도록 기능화된 (well-behaved) 모델링 블록, 기능화된 제어 구조, 비즈니스 트랜젝션을 이용한다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 춘계학술대회 논문집
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• pp.47-52
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• 2004

$HgGa_2S_4$ single crystals were grown by the chemical transport reaction method. The $HgGa_2S_4$ single crystal crystallized into a defect chalcopyrite structure $(I\bar{4})$. The lattice constants of the single crystal were found to be a=5.635 ${\AA}$ and c=10.473 ${\AA}$. The direct and indirect optical energy gaps were found to be 2.84 eV and 2.78 eV, respectively. Photoluminescence peaks of $HgGa_2S_4$ single crystal were observed at 2.37 eV, 2.18 eV, and 1.81 eV. In the single crystal, the donor level of 0.25 eV, the acceptor levels of 0.97 eV and 0.41 eV were obtained by TSC, PICTS, and absorption measurements. The photoluminescence peaks were analyzed to relate to the indirect conduction band, the donor level, and the acceptor levels.

• 대한핵의학회지
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• 제3권1호
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• pp.19-32
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• 1969

Radioisotope renography was carried out in 564 cases consisting of 150 normal controls, 140 hypertensives, 102 hypertensive nephropathys, 62 chronic renal diseases, non-functioning kidneys. It was aimed to study which parameter of the renogram is most applicable to any definite disease of the kidney. The analytical methods adopted were; Tobe, Spencer, Krueger, Matchida and Takeuchi. In the non-functioning kidney groups, the hemograms and serum nitrogen series were also studied to evaluate the relationships between the renograms and renal anemia. The parameters were; time of maximum amplitude (Tmax), half-time of maximum amplitude ($T\frac{1}{2}$), Kac value calculated from these two parameters in Tobe's method, slopes of Band C phase, B/A and B/C values in Spencer's method, total concentration (T.C.), minute concentration (M.C.) and minute excretion (M.E.) in Krueger's method, Matchida's K value and Takeuchi's renal function Index (R.F.I.). Following were the results: 1. In general, marked differences in the patterns of the renogram were observed between the normal controls and nephropathys. In Tobe's method, each parameter showed statistically significant delay or decrease in patients with hypertensive nephropathys and chronic renal diseases. In Spencer's method, slopes of B and C phase and B/C, also showed the statistically significant decrease in patients with hypertension, hypertensive nephropathys and chronic renal diseases. In Krueger's method, M.C. and ME showed the statistically significant differences between the control and patients with hypertension, hypertensive nephropathys and chronic renal diseases, In Matchida's method, K value showed the statistically significant differences between the control and patients with hypertensive nephropathys and chronic renal diseases. 2. It appeared, therefore, that Tobe's $T\frac{1}{2}$, Kac value, Spencer's slopes of Band C phase, B/A, B/C values, Krueger's T.C., M.C., and M.E. values, Matchida's K value are useful for the differentiation of various renal diseases, however, qualitative analysis of the renogram with one or two parameters is not accurate. 3. In bilateral non-functioning kidney groups, a positive correlation between anemia and nitrogen retention was observed, although the quantitative assessment of the degree of non-functioning was impossible.

• Journal of Yeungnam Medical Science
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• 제10권1호
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• pp.135-143
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• 1993

Bacteroides fragilis의 임상 분리균주 45주의 cefaclor, ciprofloxacin, imipenem의 3종 항균제에 대한 감수성 검사를 기존의 한천 평판희석법과 최근 새로이 개발된 E-test (AB Biodisk, Slona, Sweden)법으로, brain heart infusion, Mueller-Hinton, Wilkins Chalgren 한천 배지 3종류를 사용하여 균의 최소발육 억제 농도 (MIC : Minimal Inhibitory Concentration)의 결과를 비교, 관찰하였으며 5종의 quinolone 제제 (ciprofloxacin, enoxacin, norfloxacin, ofloxacin, pefloxacin)에 대한 Bacteroides fragilis group 60주의 시험관내 감수성 검사를 한천 평판 희석법으로 실시하여 다음과 같은 결과를 얻었다. 한천 평판 희석법에서 관찰된 MIC를 기준으로 E-test MIC의 결과를 비교하면 실험균주 90.3%가 한천 평판희석법의 MIC (within${\pm}$1 dilution)와 일치하여 E-test가 B. fragilis의 항균제 감수성 검사법에 한 종류로 유용한 것으로 생각되며 사용된 배지에 따른 감수성상의 양상은 큰 차이를 관찰할 수 없었으며 B. gragilis의 항균제 감수성 검사용 기본 배지로 brain heart infusion배지와 Wilkins Chalgren배지는 적합하나 Mueller-Hinton배지는 부적합 한것으로 나타났다. Bacteroides fragilis group 60주에 대한 5종의 quinolone제제에 대한 감수성상은 ofloxacin을 제외한 약재에 대해 대부분 내성을 띄었으며 균종간의 감수성상의 두드러진 차이는 관찰되지 않았다.

• 한국정보통신학회논문지
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• 제21권2호
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• pp.265-276
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• 2017

본 논문에서는 하중 적분 PDC 제어 기법과 T-S 퍼지 외란 관측기를 이용한 강인하면서도 보다 정확한 이동 로봇의 궤도 추적 제어 방법을 제안한다. 하중 적분 PDC 제어 기법은 PDC 제어 기법에 하중 적분 항을 추가함으로써 정상상태 오차를 감소시켜 준다. T-S 퍼지 외란 관측기는 T-S 퍼지 모델로 표현된 비선형 시스템에 대해 외란을 추정하고 상쇄시킬 수 있도록 한다. 따라서, T-S 퍼지 외란 관측기에 기반한 궤도 추적 제어기는 강인한 궤도 추적 성능을 보여준다. 또한, 본 연구에서는 $B\acute{e}zier$ 곡선에 의한 가속도 제한을 갖는 경로 설계 방법에 의해 초기 접근 경로를 설계함으로써, 이동 로봇의 초기 위치가 기준 궤도의 초기 위치와 다를 때 제어 입력이 매우 커지게 되어 실제적으로 사용할 수 없게 되는 문제를 해결한다. 제안된 궤도 추적 제어기의 성능을 시뮬레이션을 통해서 입증하였다.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제13권4호
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• pp.261-267
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• 2006

A local convergence analysis of Newton's method for perturbed generalized equations is provided in a Banach space setting. Using center Lipschitzian conditions which are actually needed instead of Lipschitzian hypotheses on the $Fr\'{e}chet$-derivative of the operator involved and more precise estimates under less computational cost we provide a finer convergence analysis of Newton's method than before [5]-[7].

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2003년도 춘계공동학술대회논문집
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• pp.51-59
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• 2003

해양사고 예보 시스템(MCFS)은 해양사고의 예측건수와 위험수준을 일기예보와 같이 방송하기 위한 것이다. MCFS는 해양사고 수량화 D/B, 예측 모델, 3차원 통계 가시화 시스템 등으로 구성되어 있다. 이 논문에서는 수량화 D/B의 구현 절차를 기술했다. 해양사고 데이터는 1990년부터 2000년까지 11년간 위도 33$^{\circ}$N~35$^{\circ}$N와 경도124$^{\circ}$E~127$^{\circ}$E의 대한민국 서남해안 일대에서 발생한 총 724건을 수집하였다. 수량화 D/B의 분석방법을 제안하고 그 유효성을 검토하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 하계학술대회 논문집 Vol.8
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• pp.123-124
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• 2007

A silver indium sulfide ($AgInS_2$) epilayer was grown by the hot wall epitaxy method, which has not been reported in the liteniture. The grown $AgInS_2$ epilayer has found to be a chalcopyrite structure and evaluated to be high quality crystal. From the photocurrent measurement in the temperature range from 30 K to 300 K, the two peaks of A and B were only observed, whereas the three peaks of A, B, and C were seen in the PC spectrum of 10 K. These peaks are ascribed to the band-to-band transition. The valence band splitting of $AgInS_2$ was investigated by means of the photocurrent measurement. The temperature dependence of the energy band gap of the $AgInS_2$ obtained from the photocurrent spectrum was well described by the Varshni's relation, $E_g(T)=\;E_g(0)\;eV-(7.78\;{\times}\;10^{-4}\;eV/K)T^2/(T\;+\;116\;K\;K)$. Also, Eg(0) is the energy band gap at 0 K, which is estimated to be 2.036 eV at the valence band state A and 2.186 eV at the valence band state B.

• 치위생과학회지
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• 제22권3호
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• pp.156-163
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• 2022

Background: This study attempted to apply resin infiltrant (RI) as a method to maintain the effect of tooth bleaching treatment and compared it with fluoride varnish (FV) or artificial saliva to evaluate the effect. Methods: Sixty healthy lozenge specimens were classified into five groups. Group 1 was the negative control group, and discoloration was induced after artificial saliva treatment of the tooth specimen (G1_S+C). Group 2 was a positive control group, in which pigmentation was induced after bleaching treatment and artificial saliva treatment (G2 _B+S+C). Coloration was induced in group 3 (experimental group 1) after bleaching treatment and artificial saliva treatment, followed by application of fluorine varnish (G3_B+FV+S+C). Coloration was induced in Group 4 (experimental group 2) after applying RI after bleaching treatment and artificial saliva treatment (G4_B+RI+S+C). Pigmentation was induced in group 5 (experimental group 3) after bleaching treatment and artificial saliva treatment, followed by acid treatment (etching) and treatment with RI (G5_B+E+RI+S+C). Coffee and wine were used to induce discoloration. The lightness value (L^*) of the CIE L^*a^*b^* color system was obtained by image analysis. Kruskal-Wallis H analysis was performed for the mean difference in L^* values by group. Results: When coloration was induced with coffee, there was no significant difference in L^* value between artificial saliva (G2 _B+S+C), FV (G3_B+FV+S+C), and RI (G4_B+RI+S+C, G5_B+E+RI+S+C) groups. There was no significant difference in L^* values between the artificial saliva (G2 _B+S+C), FV (G3_B+FV+S+C), and RI (G4_B+RI+S+C, G5_B+E+RI+S+C) groups, even in the case of wine induced coloration. Conclusion: It was confirmed that artificial saliva or RI treatment had similar effects to the FV previously used to maintain the effect of tooth bleaching treatment.

• East Asian mathematical journal
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• 제32권1호
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• pp.13-25
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• 2016

We consider the nonlinear matrix equation $X^p+AX^qB+CXD+E=0$, where p and q are positive integers, A, B and E are $n{\times}n$ nonnegative matrices, C and D are arbitrary $n{\times}n$ real matrices. A sufficient condition for the existence of the elementwise minimal nonnegative solution is derived. The monotone convergence of Newton's method for solving the equation is considered. Several numerical examples to show the efficiency of the proposed Newton's method are presented.