• Journal of Digital Convergence
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• v.15 no.10
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• pp.19-29
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• 2017

The purpose of this study was to identify the multidimensional factors that affect the satisfaction of life by type of baby boomer generation. The subjects of this study were 1,895 households who were born from 1955 to 1963 among the respondents in the Korea welfare panel (the 10th year). The baby boomer generation was classified into four types such as gender, income status, male and female as socioeconomic status. The male type IV (B=.074, t=1.992, p<.05), health status (B=.233, t=7.268, p<.001), household income (B=.174, t=4.476, p<.001), depression (B=-.182, t=-5.242, p<.001), self-esteem (B=.255, t=7.027, p<.001), trust (B=.064, t=2.036, p<.05), etc. were found to have a significant effect on the life satisfaction of the male baby boomer generation. The female type IV (B=.100, t=2.598, p<.05), health status (B=.239, t=6.790, p<.001) (P<.001), depression (B=-.181, t=-5.142, p<.001), and self-esteem (B=.320, t=8.600, p<.001), etc. were found to have a significant effect on the life satisfaction of the female baby boomer generation.

• Journal of the Korean Chemical Society
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• v.38 no.1
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• pp.1-7
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• 1994

Semiempirical MNDO calculations are employed to study ionicity of OH groups and stability in $T_1-OH-T_2bridges(T_1$ = Al, B and $T_2$ = P, Si) such as found in aluminophosphate family($AlPO_4-5$, BAPO-5, and SAPO-5) molecular sieves. Dimeric model clusters of Al-OH-P, B-OH-P and Al-OH-Si bridges were considered. It is shown that the elongation of the T-O bond, upon replacement of Al by B, occurs preferentially by a local deformation of the Al-O-P bridge. But the elongation of the T-O bond occurs preferentially by a rotation of Al-O-Si bridge upon substitution P for Si. Also, the ionicity of OH groups and stability increase in order to B-OH-P < Al-OH-P < Al-OH-Si bridge.

• Journal of The Korean Association For Science Education
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• v.20 no.4
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• pp.505-509
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• 2000

The kinetic structure of the content of instructions at the unit of 'heart and circulation' in "the common science", which was respectively given by two teachers majored in biology and two teachers majored in earth science was investigated. Concerning of the mean of the fundamental coefficient (B1), the mean of weighted coefficients (B2) and the progression of instruction (P), T4 (B1, 0.14; B2, 0.82; P; 0.86) teacher showed relatively lower kinetic structure and faster progression than those of the others. The other teachers showed a different level of the kinetic structure and progression: T1(B1, 0.21; B2, 0.86; P; 0.79), T2 (B1, 0.02; B2, 0.85; P; 0.80), and T3 (B1, 0.22; B2, 0.83; P; 0.78). T1 teacher who showed the largest total frequency of verbal elements, the great number of sorts of verbal elements and secondary span, had a higher level of the kinetic structure, but T4 teacher showed the lowest level of total frequency of verbal elements, the great number of sorts of verbal elements and secondary span. The main reason why T4 teacher's instruction achieved a lower level of kinetic structure was estimated that he neglected to reorganize teaching materials and he showed a small number of discourse units. In addition, the unit of 'heart and circulation' was less related to T4 teacher's major and T4 teacher had a shorter teaching experience than those of the others. T4 teacher also took charge of only one class, and this did not allow to instruct repeatedly.

• Korean Journal of English Language and Linguistics
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• v.3 no.3
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• pp.427-452
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• 2003

Korean is famous for having all voiceless stop sounds. Korean does have voiced stops but they are considered to exist only as the allophones of word initial /p, t, k/. My experiment shows the English word initial stop sounds [b, d, g] and the Korean lax stop series /p, t, k/ in word initial position are similar in the range of voice onset time. If English word initial[b, d, g] sounds are posited as voiced, then Korean word initial /p, t, k/ should be classified as voiced also. Phonetically English /b, d, g/ phonemes and Korean /p, t, k/ phonemes are very similar except the word initial [p, t, k] are devoiced slightly more, but not significant enough to be classified as voiceless than English word initial [b, d, g]. If we posit /b, d, g/ as Korean phonemes, it explains why Korean /p, t, k/ series has the allophones [b, d, g] instead of fortis stops /p', t', k'/ in Korean even though /p', t', k'/ has less positive VOT value than /p, t, k/. If we posit /b, d, g/ as Korean phonemes, then it does not cause spelling or pronunciation confusion either when Koreans learn English or English speakers learn Korean.

• Kyungpook Mathematical Journal
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• v.28 no.2
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• pp.129-139
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• 1988

Let $T^{\alpha}_{\lambda}$(p, A, B) denote the class of functions $$f(z)=z^p-{\sum\limits^{\infty}_{k=1}}{\mid}a_{p+k}{\mid}z^{p+k}$$ which are regular and p valent in the unit disc U = {z: |z| <1} and satisfying the condition $\left|{\frac{{e^{ia}}\{{\frac{f^{\prime}(z)}{z^{p-1}}-p}\}}{(A-B){\lambda}p{\cos}{\alpha}-Be^{i{\alpha}}\{\frac{f^{\prime}(z)}{z^{p-1}}-p\}}}\right|$<1, $z{\in}U$, where 0<${\lambda}{\leq}1$, $-\frac{\pi}{2}$<${\alpha}$<$\frac{\pi}{2}$, $-1{\leq}A$<$B{\leq}1$, 0<$B{\leq}1$ and $p{\in}N=\{1,2,3,{\cdots}\}$. In this paper, we obtain sharp results concerning coefficient estimates, distortion theorem and radius of convexity for the class $T^{\alpha}_{\lambda}$(p, A, B). It is further shown that the class $T^{\alpha}_{\lambda}$(p, A, B) is closed under "arithmetic mean" and "convex linear combinations". We also obtain class preserving integral operators of the form $F(z)=\frac{p+c}{z^c}{\int^z_0t^{c-1}}f(t)dt$, c>-p, for the class $T^{\alpha}_{\lambda}$(p, A, B). Conversely when $F(z){\in}T^{\alpha}_{\lambda}$(p, A, B), radius of p valence of f(z) has also determined.

• Journal of the Korean Society of Radiology
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• v.83 no.6
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• pp.1312-1326
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• 2022

Purpose To investigate the added value of right down decubitus (RDD) CT when determining adjacent organ invasion in cases of advanced gastric cancer (AGC). Materials and Methods A total of 728 patients with pathologically confirmed T4a (pT4a), surgically confirmed T4b (sT4b), or pathologically confirmed T4b (pT4b) AGCs who underwent dedicated stomach-protocol CT, including imaging of the left posterior oblique (LPO) and RDD positions, were included in this study. Two radiologists scored the T stage of AGCs using a 5-point scale on LPO CT with and without RDD CT at 2-week intervals and recorded the presence of "sliding sign" in the tumors and adjacent organs and compared its incidence of appearance. Results A total of 564 patients (77.4%) were diagnosed with pT4a, whereas 65 (8.9%) and 99 (13.6%) patients were diagnosed with pT4b and sT4b, respectively. When RDD CT was performed additionally, both reviewers deemed that the area under the curve (AUC) for differentiating T4b from T4a increased (p < 0.001). According to both reviewers, the AUC for differentiating T4b with pancreatic invasion from T4a increased in the subgroup analysis (p < 0.050). Interobserver agreement improved from fair to moderate (weighted kappa value, 0.296-0.444). Conclusion RDD CT provides additional value compared to LPO CT images alone for determining adjacent organ invasion in patients with AGC due to their increased AUC values and improved interobserver agreement.

• Journal of Periodontal and Implant Science
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• v.33 no.3
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• pp.331-340
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• 2003

본 연구의 목적은 인간의 동맥경화증에서 Porphyromonas gingivalis (P. gingivalis)와 인체 열충격단백 60의 T-세포 및 교차성 B-세포 epitope를 규명하고 수립된 T-세포주의 T-세포 주요조직적합체 양상을 파악하려는 데 있다. P. gingivalis 열충격단백-반응성 T 세포주와 환자의 혈청을 이용하여 P. gingivalis 열충격단백60 분자를 구성하는 104개의 중복성 합성 펩타이드의 T-세포 epitope과 B-세포 epitope을 규명하였다. 인체 열충격단백60에 대한 B-세포 epitope도 같은 방법으로 파악하였다. P. gingivalis, P. gingivalis 열충격단백60 또는 인체 열충격단백60에 대한 IgG 항체는 모든 동맥경화증 환자에서 상승하였다. P. gingivalis 열충격단백60의 3, 15, 24, 33, 45, 53, 64, 84, 88, 99번 펩타이드가 주요한 T-세포 epitope였고 이것들은 T-세포 및 B-세포 공동 epitope이기도 했다. 또한 인체 열충격단백60 교차반응 B-세포 epitope은 15, 29, 53, 56, 69, 74번 펩타이드로 판명되었다. 대부분 환자의 주요조직적합체는 $HLA-DRB1^{\ast}1504$와 $HLA-DZB1^{\ast}0603$으로 나타났다. 결론적으로 P. gingivalis 열충격단백60은 제 2급 주요조직적합제-제한적으로 분해되고 전달되었으며 이 단백질이 공통적인 T-세포 및 B-세포 epitope를 가지면서 동시에 인체 열충격단백60과 교차성 B-세포 epitope을 가지면서 동맥경화증의 면역조절기능에 관여한다고 볼 수 있다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.186-189
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• 2017

본 연구에서는 한국복지패널 10차년(2015년)도 자료를 이용하여 베이비부머세대의 삶의 만족에 영향을 미치는 요인에 대한 통합적 접근을 시도하고자 한다. 삶의 만족에 영향을 미치는 변인으로는 성별, 교육수준, 건강상태 등의 인구학적 요인, 경제적 요인으로 가구소득, 심리적 요인으로 우울과 자아존중감, 사회적 요인으로 신뢰와 상호호혜성, 가구수준과 종사상 지위 등을 독립변수로 설정하여 기술통계분석, 상관분석, 회귀분석 등을 실시하였다. 분석결과, 베이비부머의 삶의 만족에 대해 건강상태(B=.236, t=9.914, p<.001), 가구소득(B=.131, t=4.535, p<.001), 우울(B=-.186, t=-7.568, p<.001), 자아존중감(B=.286, t=11.080, p<.001), 신뢰(B=.049, t=2.128, p<.05), 종사상 지위(B=.081, t=3.284, p<.01) 등이 유의미한 영향을 미치는 것으로 분석되었다.

• Journal of the Korean Mathematical Society
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• v.49 no.5
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• pp.1017-1030
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• 2012

We consider forced second order differential equation with $p$-Laplacian and nonlinearities given by a Riemann-Stieltjes integrals in the form of $$(p(t){\phi}_{\gamma}(x^{\prime}(t)))^{\prime}+q_0(t){\phi}_{\gamma}(x(t))+{\int}^b_0q(t,s){\phi}_{{\alpha}(s)}(x(t))d{\zeta}(s)=e(t)$$, where ${\phi}_{\alpha}(u):={\mid}u{\mid}^{\alpha}\;sgn\;u$, ${\gamma}$, $b{\in}(0,{\infty})$, ${\alpha}{\in}C[0,b)$ is strictly increasing such that $0{\leq}{\alpha}(0)<{\gamma}<{\alpha}(b-)$, $p$, $q_0$, $e{\in}C([t_0,{\infty}),{\mathbb{R}})$ with $p(t)>0$ on $[t_0,{\infty})$, $q{\in}C([0,{\infty}){\times}[0,b))$, and ${\zeta}:[0,b){\rightarrow}{\mathbb{R}}$ is nondecreasing. Interval oscillation criteria of the El-Sayed type and the Kong type are obtained. These criteria are further extended to equations with deviating arguments. As special cases, our work generalizes, unifies, and improves many existing results in the literature.

• Analytical Science and Technology
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• v.17 no.3
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• pp.282-288
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• 2004

Inclusion selectivities of the cyanocadmate host complexes with ammonium oniums, $[Cd_x(CN)_{2x}][onium{\cdot}zG]$ (onium = $NMe_3Et^+$, $NMeEt{_3}^+$ and $NEt{_4}^+$, G = guest), have been investigated for $C_6H_6$ (B), PhMe (T), PhEt (E), ortho (O), meta (M), and para (P) isomers of $C_6H_4Me_2$ as the aromatic guest molecules. From the binary, ternary, quaternary and quinary mixed guests of B, T, E, O, M and P, the order of preference in the $NMe_3Et+$-host is $B{\gg}$T>P${\fallingdotseq}O{\fallingdotseq}M$ and E>O${\gg}P{\fallingdotseq}M$; in the $NMeEt{_3}^+$-host is T>B>P${\gg}O{\fallingdotseq}M$ and E>P${\gg}$M>O; in the $NEt{_4}^+$-host is $B{\gg}T{\fallingdotseq}O{\fallingdotseq}M{\fallingdotseq}P$. However, the $NEt{_4}^+$-host complexes of E, O, M and P mixed-guests were not obtained. These inclusion selectivities were compared to our previous results of the $NMe{_4}^+$-host; T>B>P${\gg}$M>O and E>P${\gg}$M>O.