• Communications of the Korean Mathematical Society
• /
• v.13 no.1
• /
• pp.73-76
• /
• 1998

It is proved that the partial differential operator $D_x + ix^q D^2_y$ is not locally solvable in any open set which intersects the line x = 0, when $q = - \frac{2l-1}{2k-1}$ is not an integer.

• Journal of Digital Convergence
• /
• v.19 no.12
• /
• pp.103-113
• /
• 2021

In this study, the Q method is used to investigate the types of perceptions of liberal arts education perceived by college students and to investigate the characteristics of each type. 33 Q samples were extracted from the Q population collected through literature research, open questionnaires, and deep interviews. Q classification was conducted for 27 students of A University located in B City. The data was analyzed using the QUANL program. In the research, the types of awareness of liberal arts education were derived as "pursuit of various experiences", "pursuit of practical studies", "pursuit of accident expansion", and "pursuit of social change". The results of this study re-establish the meaning of liberal arts education in university education and suggest that it is necessary to consider various educational contents and teaching learning methods.

• KIPS Transactions on Computer and Communication Systems
• /
• v.10 no.5
• /
• pp.155-162
• /
• 2021

n-step TD learning is a combination of Monte Carlo method and one-step TD learning. If appropriate n is selected, n-step TD learning is known as an algorithm that performs better than Monte Carlo method and 1-step TD learning, but it is difficult to select the best values of n. In order to solve the difficulty of selecting the values of n in n-step TD learning, in this paper, using the characteristic that overestimation of Q can improve the performance of initial learning and that all n-step returns have similar values for Q ≈ Q^*, we propose a new learning target, which is composed of the maximum and the mean of all k-step returns for 1 ≤ k ≤ n. Finally, in OpenAI Gym's Atari game environment, we compare the proposed algorithm with n-step TD learning and proved that the proposed algorithm is superior to n-step TD learning algorithm.

• Bulletin of the Korean Chemical Society
• /
• v.31 no.2
• /
• pp.315-326
• /
• 2010

This study examined the overlapping resonances in the systems involving 1 open and 2 closed channels using the phase-shifted version of multichannel quantum-defect theory (MQDT). The results showed that 21 patterns for the q reversals in the autoionization spectra are possible depending on the relative arrangements of the two simple poles and roots of the quadratic equations. Complete cases could be generated easily using the q zero planes determined using only 3 asymmetric spectral line profile indices. The transition of the spectra of the coarse interloper Rydberg series from the lines into a structured continuum by being dispersed onto the entire Rydberg series was found. The overall behavior of the time delays was found to be governed by the dense Rydberg series, which is quite different from the one of the autoionization cross sections that is governed by an interloper, indicating that different dynamics prevail for them. This is in contrast to the two channel system where both quantities behave similarly. The dynamics obtained in the presence of overlapping resonances is as follows. The absorption process is instant and dominated by a transition to the interloper line. This process is followed by rapid leakage into the dense Rydberg series, which has a longer residence time before ionization than that of the interloper state. This is because the orbiting period is proportional to $\upsilon^3$ so that an excited electron has a shorter lifetime in the interloper state belonging to a lower member of the Rydberg series.

• Korean Journal of Microbiology
• /
• v.34 no.3
• /
• pp.115-119
• /
• 1998

We cloned the 4.8 kb BglII fragment containing genes downstream pHENX7 from Pseudomonas sp. strain DJ77. The restriction map of the resultant clone, recombinant plasmid pYCS500, was determined. Sequencing analysis of the 465 bp HindIII-ClaI fragment revealed an open reading frame of 282 bp that was then designated phnM. The deduced polypeptide is 93 amino acid residues long with a $M_r$ of 10,008. The PhnM has 37.3-53.9% identity with plant-type ferredoxin proteins such as NahT, XylT, DmpQ, AtdS, PhlG, PhhQ and TbuW and contains the motif similar to well-conserved functional domains of those proteins.

• Communications of the Korean Mathematical Society
• /
• v.37 no.3
• /
• pp.723-734
• /
• 2022

In this work, we introduce a new subclass of analytic functions of complex order involving the (p, q)-derivative operator defined in the open unit disc. For this class, several Fekete-Szegö type coefficient inequalities are derived. We obtain the results of Srivastava et al. [22] as consequences of the main theorem in this study.

• Journal of the Korean Mathematical Society
• /
• v.39 no.2
• /
• pp.277-287
• /
• 2002

Let B be the open unit ball with center 0 in the complex space $C^n$. For each q>0, B$_{q}$ consists of holomorphic functions f : B longrightarrow C which satisfy sup z $\in$ B $(1-\parallel z \parallel^2)^q\parallel\nabla f(z)\parallel < \infty$ In this paper, we will show that functions in weighted Bloch spaces $B_{q}$ (0 < q < 1) satifies the following Lipschitz type result for Bergman metric $\beta$: ｜f(z)-f($\omega$)｜< $C\beta$(z, $\omega$) for some constant C.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 2004.11a
• /
• pp.3-7
• /
• 2004

An electric power efficiency of electrodeless fluorescent lamp has big relativie property of gas in lamp, gas pressure, lamp formation, ingredients of magnetic substance and shape and action frequency etc. We used magnetic substance that open self-examination material of electrodeless fluorescent lamp antenna. Ferrite that is used in this experiment was Mn-Zn type. We have examined resistance kind, impedance, Q-factor's frequency characteristic by ferrite. Impedance, resistance and capacitance did not show difference in start frequency 2.65 [MHz] but there was difference quantity. We could know Q-factor's difference according to material, and Q-factor's is important part of antenna design.

• Korean Journal of Adult Nursing
• /
• v.15 no.3
• /
• pp.343-353
• /
• 2003

Purpose: This study was performed to identify and understand the nature of attitude patterns regarding dying process exhibited in the elderly persons who lived in the community setting. Method: Q methodology was applied. Ten elderly were selected from the senior centers and requested to answer open ended questions by using written questionnaires. Additionally, 12 other elderly from different senior centers were interviewed in depth, and their statements were recorded via voice pen by researchers to derive Q-population. From the 120 Q-population, 33 Q-sample were selected. 22 P-sample were rated by 1 to 9 point scale respectively for Q-sorting. For Q-type analysis, pc QUNAL was used. Result: Three types of attitude patterns were identified, which were valuing dignity, seeking provision of nature, and avoiding of dying process. Conclusion: The significance of this study is as follows : Discovery of 3 attitude patterns of elderly toward dying, better understanding about elderly's perspectives for favorable dying, and informations for possible development of nursing strategies for elderly who is facing death.

• Journal of applied mathematics & informatics
• /
• v.36 no.5_6
• /
• pp.567-574
• /
• 2018

Let $f:f(z)=z+{\sum^{{\infty}}_{n=2}}a_nz^n$ be analytic in the open unit disc E. Then f is said to belong to the class $M_{\alpha}$ of alpha-convex functions, if it satisfies the condition ${\Re}\{(1-{{\alpha})}{\frac{zf^{\prime}(z)}{f(z)}}+{{\alpha}}{\frac{(zf^{\prime}(z))^{\prime})}{f^{\prime}(z)}}\}$ > 0, ($z{\in}E$). In this paper, we introduce and study q-analogue of the class $M_{\alpha}$ by using concepts of Quantum Analysis. It is shown that the functions in this new class $M(q,{\alpha})$ are q-starlike. A problem related to q-Bernardi operator is also investigated.