• Journal of applied mathematics & informatics
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• v.7 no.1
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• pp.125-137
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• 2000

A solution of the findpath problem in which a moving object in required to avoid moving obstacles and move to the designated target in the plane is porcided via the second method of Lyapunov. This paper presents an new control designed by a family of piecewise Lyapunov functions to solve a findpath problem and gives some simultion results of that.

• Korean Journal of Mathematics
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• v.32 no.1
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• pp.183-193
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• 2024

In this paper, a new class of bi-univalent functions that are described by Gegenbauer polynomials is presented. We obtain the estimates of the Taylor-Maclaurin coefficients |m₂| and |m₃| for each function in this class of bi-univalent functions. In addition, the Fekete-Szegö problems function new are also studied.

• Journal of Microbiology and Biotechnology
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• v.28 no.3
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• pp.473-481
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• 2018

Owing to its high protein secretion capacity, simple nutritional requirements, and GRAS (generally regarded as safe) status, Bacillus licheniformis is widely used as a host for the industrial production of enzymes, antibiotics, and peptides. However, as compared with its close relative Bacillus subtilis, little is known about the physiology and stress responses of B. licheniformis. To explore its temperature-stress metabolome, B. licheniformis strains ATCC 14580 and B186, with respective optimal growth temperatures of $42^{\circ}C$ and $50^{\circ}C$, were cultured at $42^{\circ}C$, $50^{\circ}C$, and $60^{\circ}C$ and their corresponding metabolic profiles were determined by gas chromatography/mass spectrometry and multivariate statistical analyses. It was found that with increased growth temperatures, the two B. licheniformis strains displayed elevated cellular levels of proline, glutamate, lysine, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, and octadecanoic acid, and decreased levels of glutamine and octadecenoic acid. Regulation of amino acid and fatty acid metabolism is likely to be associated with the evolution of protective biochemical mechanisms of B. licheniformis. Our results will help to optimize the industrial use of B. licheniformis and other important Bacillus species.

• International Journal of Computer Science & Network Security
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• v.21 no.12
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• pp.61-64
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• 2021

The work is devoted to the problem of modernization of the higher education system of Ukraine through the integration of higher education institutions into the European Higher Education Area. Based on the analysis of statistical data, a conclusion was made about the collapse of the higher education system of Ukraine due to a number of problems, which negatively affects the formation of human capital. The importance of international cooperation with the EU in the field of education for the modernization of higher education is substantiated. The institutional principles of formation are investigated, the main priorities of its development at the present stage are determined. The legal bases of European integration of higher education in Ukraine are analyzed. An analysis of the development of international cooperation of Ukrainian universities and their participation in European educational programs. There is a positive tendency to increase the activity of Ukrainian universities in international cooperation, which increases their position in international rankings. Weaknesses of integration processes are revealed and directions of improvement of higher education are offered.

• Journal of the Semiconductor & Display Technology
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• v.9 no.4
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• pp.71-76
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• 2010

According to recent changes in industry for semiconductor devices, a low-temperature treatment has become a necessity. These changes relate to size refinement and the development of new materials. While variation in cooling efficiency does not affect the yield when using a high-temperature treatment, uniform cooling efficiency is necessary avoid "inconsistencies/bends" in low temperature treatments. However it is difficult to increase temperature stabilization in low temperature treatments. In this paper, using CFD (Computer Fluid Dynamics), we analyze and manipulate the design and input of the low-temperature system to attempt to control for temperature variations within the quartz tube, of which airflow appears to be a predominant factor. This simulation includes variable inputs such as airflow rate, head pressure, and design manipulations in the S.C.U. (Super Cooling Unit).

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.1007-1009
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• 2009

In this paper, to introduce synthetic concept of electronic cash that it solved disability elements of e-money issued by existing operators. In addition, a wireless network offers enhanced features due to RFID-technology. Moreover, The mobile phones, easy deployment, equipped with electronic money functions and should be give a convenience of mutual gift. Finally, To introduce concept of coin purse that it gets out of the inconvenience possession and loss of the concerns, casting cost about coin.

• 대한공업교육학회지
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• v.34 no.2
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• pp.20-41
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• 2009

The purpose of this study was to propose conceptual Structure of the study of industrial education based on the concepts and characteristics of industrial education. Therefore, the study was conducted through literature research. 1) The characteristic of industrial education in the study was proposed as 'subject for occupational competence in the industrial technology' on the educational purpose. 2) The characteristic of industrial education in the study was proposed as 'subject for practical knowledge in the industrial/engineering technology' on the structure of knowledge. 3) The characteristic of industrial education in the study as was proposed as 'subject for technological problem solving in the system design and engineering context' on the educational methodology 4) The characteristic of industrial education in the study was proposed as 'design, building, testing and troubleshooting' on the educational process.

• The Journal of the Convergence on Culture Technology
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• v.6 no.1
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• pp.419-424
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• 2020

This study was to examine the educational satisfaction of students majoring in music education and provided suggestions to the college of education, Korea. First of all, 152 students majoring in music education in university, Korea, were surveyed. Second, the SPSS 22 for Windows program was used to conduct technical statistical analysis: independent sample t-test, one-way variance analysis, and cross-analysis. The result was that there were significant differences in the educational satisfaction, depending on the gender, school year, career-hopping professions, and individual efforts of students. College of Education has a huge impact on society as an institution that trains pre-service teachers who will teach future students. Therefore, based on the results of the study, I hope that the college of education will serve as fundamental institutes for the training of pre-service teachers.

• Journal of The Korean Association of Information Education
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• v.11 no.2
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• pp.167-176
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• 2007

The world is changing fast from the information society to the knowledge society as the amount of knowledge exploded over through development of the information communication technology. In this situation, mobile learning based on the mobile devices (PDAs, Cellular phone, Tablet PC, etc) offers the opportunity to assist each individual and group to learn anytime, anywhere. The purpose of this study is to discuss development direction of game styled contents for mobile learning. we introduce the development direction and prototypes of mobile learning contents focused on game-styled activities as the alternative to make up for the weak points of the mobile devices.

• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.259-270
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• 2024

This paper introduces a fundamental investigation into the establishment of a framework for integrating fieldwork into special education teacher preparation programs. This paper introduces a comprehensive framework for the implementation of semester-based practicum systems in special education teacher training programs. The paper delineates essential stages including preparation, adaptation, responsibility readiness, mutual responsibility, and evaluation, emphasizing the importance of collaboration, hands-on training, and feedback interactions. Moreover, the study delves into practical learning frameworks such as the Experiential Learning Model, Sociocultural Theory, and the Apprenticeship of Observation Model. It highlights their significance in connecting theoretical concepts with practical applications and in cultivating reflective practices among pre-service special education teachers. Moreover, the study explores two significant practicum models, namely the Class-Academy Model and the Professional Development Schools (PDS) Model, examining their elements, advantages, and impacts on teacher education programs. The paper provides valuable insights into improving the preparation of special education teachers by incorporating structured practicum experiences and innovative models that blend theoretical knowledge with practical application.