• Bulletin of the Korean Chemical Society
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• v.7 no.5
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• pp.388-391
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• 1986

There are lipid phase theories and aqueous phase theories among the theories of anesthesia. For water clusters induced by anesthetizing molecules, the interaction energies are calculated using an empirical potential function and correlated with the anesthetizing partial pressures for mice. A good agreement was obtained with the theory that the water clusters around anesthetics play an important role on the anesthetic actions.

• Communications of the Korean Mathematical Society
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• v.36 no.4
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• pp.641-650
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• 2021

The notions of skew-commuting/commuting/semi-commuting/skew-centralizing/semi-centralizing mappings play an important role in ring theory. ${\mathfrak{C}}^*$-algebras with these properties have been studied considerably less and the existing results are motivating the researchers. This article elaborates the structure of prime rings and ${\mathfrak{C}}^*$-algebras satisfying certain functional identities involving automorphisms.

• Korean Journal of Mathematics
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• v.27 no.2
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• pp.445-463
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• 2019

Let C[0, T] denote the space of continuous real-valued functions on [0, T]. On the space C[0, T], we introduce a Banach algebra of series of functions which are generalized Fourier-Stieltjes transforms of measures of finite variation on the product of simplex and Euclidean space. We evaluate analytic Feynman integrals of the functions in the Banach algebra which play significant roles in the Feynman integration theory and quantum mechanics.

• Communications of the Korean Mathematical Society
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• v.37 no.3
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• pp.649-658
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• 2022

In this paper, we introduce the notion of a left-almost-zero groupoid, and we generalize two axioms which play important roles in the theory of BCK-algebra using the notion of a projection. Moreover, we investigate a Smarandache disjointness of semi-leftoids.

• Journal of Korea Game Society
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• v.17 no.5
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• pp.19-26
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• 2017

A game player experiences gameplay that game designer sets in play space according to goal of a game. Player's experiential behaviors are affected by the space structure of game level and its arrangements. Therefore, it is an important process to understand and analyze the space structure of game level at the initial stage of game designing. In this paper, we was aimed to analyze the space structure and components of FPS game level based on space theory. To attain the objective, observation was carried out on a total of 204 levels in 3 different kinds of FPS games and the difference in the distribution of spatial composition factors by the goal of a game level was identified. As a result of the analysis, experiential behaviors in the play space show a clear difference according to the goal of the game level and the space structure that derives this is different.

• Journal of Korea Game Society
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• v.10 no.6
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• pp.89-96
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• 2010

To identify characteristics of social network farm game based on smart phone platform, this study analyzed how social network play experience connects with the space of farm game. The play experience of social network farm game based on smart phone platform is mainly composed of three modules for cultivating, placing environment, extending space. This study categorized space for external perspective space, internal perspective space, symbolic design space according to space experience theory and researched play experience in these spaces. In farm game players perceive space by fixed point of view, and make their own space a standard unit for reinterpreting and rearranging modules. In this process the space played subjective role not only background to bring co-work play is essential in social network game.

• Journal of The Korean Association of Information Education
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• v.14 no.4
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• pp.517-525
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• 2010

Because the existing Skemp's play activities learning has only been done on the offline, the hassles of learning paper production, the understanding of achievement levels, and the difficulty of feedback and compensation have been pointed out as a serious problem. Therefore, the aim of this study is to develop web-based learning tool applied the Skemp's play activities for elementary school students who learn mathematical skills easily in the web environment. To demonstrate the effectiveness of implemented web-based learning tool, we have analyzed questionnaire survey conducted for academic achievement of the third grade elementary school students. The analysis results show that for improving the ability of multiplication and division operation, the learning using web-based tool applied the Skemp's play activities is more effective than the learning based on the existing educational process and the result is statistically significant at the 5% significance level.

• (The) Research of the performance art and culture
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• no.40
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• pp.137-161
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• 2020

In this article, I examined the conflict of youth reflected in Bae Bong Ki's plays based on theory of 'conflict'. Bae Bong Ki has been questioning the 'youth rights' in determining the content of performances, along with 'the magnetic field of college entrance examination' where most of the youth feel under huge pressure in his play. In the and , I focused on the students with the highest grade and the students with the lowest grade in the context of university entrance examination. Students who are struggling to keep the grades up are captured in this play as the educational reality of adolescents in distress. The situation of the top and bottom students is different, but both top and bottom students were too stressful to go to school. And 'the rights of the youth in deciding the content of the performance' in was a difficult topic because it collides with the right for the teacher to educate. It is expected that many plays will be created reflecting the conflict of youth in the future, and youth theater as well as discussions upon it will be enriched.

• Applied Microscopy
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• v.47 no.3
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• pp.187-202
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• 2017

The classical electron band theory is a powerful tool to describe the electronic structures of solids. However, the band theory and corresponding density functional theory become inappropriate if a system comprises localized electrons in a scenario wherein strong electron correlations cannot be neglected. $SrRuO_3$ is one such system, and the partially localized d-band electrons exhibit some interesting behaviors such as enhanced effective mass, spectral incoherency, and oppression of ferromagnetism and itinerancy. In particular, a Metal-Insulator transition occurs when the thickness of $SrRuO_3$ approaches approximately four unit cells. In the computational studies, irrespective of the inclusion of on-site Hubbard repulsion and Hund's coupling parameters, correctly depicting the correlation effects is difficult. Because the oxygen atoms and the symmetry of octahedra are known to play important roles in the system, scrutinizing both the electronic band structure and the lattice system of $SrRuO_3$ is required to find the origin of the correlated behaviors. Transmission electron microscopy is a promising solution to this problem because of its integrated functionalities, which include atomic-resolution imaging and electron energy loss spectroscopy.

• Journal of the Korean Operations Research and Management Science Society
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• v.29 no.4
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• pp.159-173
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• 2004

Instant Messenger is a communication tool which allows instant real-time connection between parties through Internet Compared to the most popular Internet communication tool. email. the messenger allows people to check network presence of other parties and to connect in real time among multiple parties. Mostly due to the convenience it provides. use of instant messengers has increased tremendously not only for personal purpose but also for business purpose. However. firms are agonizing about the real impact of instant messenger usage among employees. whether the impact is positive or negative in terms of the productivity, Applying the theory of reasoned action (TRA) and technology acceptance model (TAM). this study sets UP perceived ease of use. perceived usefulness and cultural orientation of individuals as antecedents of adoption and use of the messenger application, Also. the impacts of messenger usage are measured as task productivity and intimacy among colleagues. This study presents several findings about the instant messenger, First. perceived ease of use. and usefulness play important roles in raising the adoption level of instant messenger. Also. culture propensity also maintains strong influence towards the actual usage of the messenger. Among cultural variables. innovativeness, supportiveness and outcome orientation reveal strong positive impacts on adoption and use of the messenger. On the dependent side. use of instant messenger seems to have a strong direct impact on task productivity as well as indirect impact through intimacy. Implications are discussed.