• Journal of applied mathematics & informatics
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• v.41 no.5
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• pp.1085-1102
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• 2023

In this study the magneto hydrodynamic (MHD) micro polar fluid flow of a viscous incompressible fluid past a porous medium in the presence of chemical reaction is considered. This work is devoted to investigate the Soret effect and Electromagnetic radiation effect and analyze analytically. In the energy equation the applied magnetic field strength and in the concentration equation the Soret effect are incorporated. The basic PDE (partial differential equations) are reduced to ODE (ordinary differential equations) using non dimensional variables. Then the analytical solution of the dimensionless equations are found using perturbation technique. The features of the fluid flow parameters are analyzed, discussed and explained graphically. The graphical solutions are found using MATLAB R2019b. Skin friction coefficient at the wall, Couple stress coefficient at the plate and the local surface heat flux are also thoroughly examined. Overall, this study sheds light on the complex interplay between physical parameters in the behavior of MHD micro-polar fluid past a porous medium in the presence of chemical reaction.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.801-802
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• 2023

시큐어 코딩은 해킹 등 사이버 공격의 원인인 보안 취약점을 제거해 안전한 소프트웨어를 개발하는 SW 개발 기법을 의미한다. 개발자의 실수나 논리적 오류로 인해 발생할 수 있는 문제점을 사전에 차단하여 대응하고자 하는 것이다. 그러나 현재 시큐어 코딩에는 오탐과 미탐의 문제가 발생한다는 단점이 있다. 따라서 본 논문에서는 오탐과 미탐이 발생하는 단점을 해결하고자 머신러닝 알고리즘을 활용하여 AI 기반으로 개발자의 실수나 논리적 오류를 탐지하는 시큐어 코딩 도구를 만들고자 한다. 다양한 모델을 사용하여 보안 취약점을 모아놓은 Juliet Test Suite를 전처리하여 학습시켰고, 정확도를 높이기 위한 과정 중에 있다. 향후 연구를 통해 정확도를 높여 정확한 시큐어 코딩 점검 도구를 개발할 수 있을 것이다.

• Journal of Navigation and Port Research
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• v.48 no.2
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• pp.88-96
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• 2024

This study examined challenges posed by two ferry routes, namely, Likoni and Mtongwe crossings, in the Mombasa Channel and their impact on navigational safety. Utilizing the Environmental Stress (ES) model, this study analyzed current ship traffic and assessed stress levels imposed by ferry crossing traffic on navigators. ES values revealed significant stress at these ferry crossings attributed to varying transit speeds. Standardizing transit speeds at two ferry passages can reduce high stress levels, presenting a viable solution. Furthermore, the IWRAP Mk2 simulation underscores crossing collisions as a significant concern, particularly at Likoni and Mtongwe crossings, due to increased ferry traffic. This research offers valuable insights for stakeholders, such as the Kenya Ports Authority (KPA), to develop targeted safety measures and enhance the flow of ship traffic in the channel.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.5
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• pp.523-530
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• 2016

Human mind can be divided by conscious and nonconscious. The action that can be seen by eyes express of conscious world, but brain researchers tell us that the world of nonconscious more occupied than world of conscious. In this paper, we divide conscious and nonconscious of world in basic love model of Romeo and Juliet, and then we represent complex number for the conscious and nonconscious. We also display as time series and phase plane for their behavior. Finally, we confirms the existence of nonlinear characteristics in their behavior.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.7
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• pp.845-850
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• 2015

Love which is one of the emotional of mankind, has been studied in sociology and psychology as a matter of great concern. Through such a research, the researchers have provided the basic mathematical model for love model, we cannot find nonlinear characteristics through the basic love model. Therefore, in this paper, in order to find nonlinear behaviors in the basic love model, we apply external force to the basic love model. Then we confirm the existence of nonlinear behaviors through time series and phase portrait. We also confirm that this nonlinear behaviors have the periodic doubling, chaotic phenomena and periodic process which are very similar to typical chaotic occurrence phenomena.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.2
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• pp.343-348
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• 2020

During 50 years, the chaotic theory has begun to research with concerning in Mathematics and physics, and it has extended the fields to of engineering and social science. Recently, chaotic theory has progressed as a type of fusion research fused with natural science and social science. Such fused research includes problems for addiction, happiness of human, problem happened between family and love affairs between man and woman. In this paper, we consider the external environment based on love model which is one among fusion research, and when we consider colored noise in the external environment, we verify how the chaotic pattern is affected in the love model through time series and phase portrait.

• The Journal of the Korea Contents Association
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• v.13 no.9
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• pp.440-447
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• 2013

Recently corpus linguistic analyses enable researchers to examine meanings and structural features of data, that is not detected intuitively. While the potential of corpus linguistic techniques has been established and demonstrated for non-literary data, corpus stylistic analyses have been rarely performed in terms of the analysis of literature. Specifically this paper explores keywords and their role in text analysis, which is primary part of corpus linguistic analyses. This paper focuses on the application of techniques from corpus linguistics and the interpretation of results. This paper addresses the question of what is to be gained from keyword analysis by scrutinizing keywords in Shakespeare's Romeo and Juliet.

• International Journal of Knowledge Content Development & Technology
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• v.11 no.2
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• pp.23-36
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• 2021

Makerspace offers an innovative way for university libraries to render services and achieve its core objectives. However, there is low level of adoption in Nigerian university libraries, hence the need to investigate the personnel's perception towards makerspace as an innovative learning platform. To achieve this, the descriptive research design was used to elicit data with the aid of a structured questionnaire, from the 96 library personnel in John Harris Library, University of Benin. Of the 96 copies of questionnaire distributed, 68 copies were returned and analyzed using descriptive statistics. The results showed that the library personnel were familiar with makerspace even though they still require more information about it. Also, that makerspace gives students the opportunity to acquire ew skill and enhances collaboration among learners. Moreover, the study revealed that budget constraints, high cost and maintenance of equipments, erratic power supply and lack of staff training are some of the perceived challenges to makerspace implementation. Consequently, the study revealed that university libraries should strategize on how to increase allocation of funds, organize makerspace webinar for personnel, ensure stable electricity supply and create a dedicated space for makerspace in the library. In conclusion, makerspace will provide students with the technological exposure and creative abilities required for the future, and as such effective planning should be made for its deployment and sustainability in Nigerian university libraries.

• Journal of the Korean Institute of Intelligent Systems
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• v.25 no.4
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• pp.313-318
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• 2015

Recently, it is emphasized importance of family. The new husband and wife are created by caused marriage, they organize new family including wife's home and husband's home. As a result, they conflict or accomplish peace with new family. Such a researchers mainly have been studied in the social science side. Because there is no mathematical modeling which is one of the natural science, for family relationship, it is not provide to reveal the behavioral phenomena between families fundamentally. In this paper, one of the nonlinear research for social subject, we modify love model of Romeo and Juliet. Then we propose novel family relationship model for parent-in-law and daughter (or son)-in-law relation. We also confirm chaotic behavior or nonlinear behavior by time series and phase portrait.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.1
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• pp.663-668
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• 2017

This study was conducted to examine the possibility of developing a drawing course in online education and to assess the satisfaction and dissatisfaction of students. The drawing class consisted of a conceptual understanding of the drawing, learning actual techniques and performing drawing tasks. This course was rated on the content satisfaction scale and the course evaluation scale when it was developed in 2014 and partially modified in 2016. Both the content satisfaction and lecture evaluation showed similar scores to the average for all subjects in the school. Specifically, 'organization of content' received good reviews, while 'interaction' received a low rating in the content satisfaction scale. Additionally, 'enthusiasm' and 'response sincerity of teacher' received high ratings, but 'overall satisfaction' was low in the course evaluation scale. Finally, the self-assessment of students was also low. These results indicate that students want more practice and more active interactions.