• The Journal of Korean Association of Computer Education
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• v.11 no.6
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• pp.39-51
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• 2008

There exist many differences between the revised Informatics curriculum in 2007 and the current Informatics curriculum in junior-high school. The revised Informatics curriculum emphasized on the computer science principles and problem solving ability instead of the application program usage. Since the revised Informatics curriculum introduces a new section called 'Problem-solving methods and procedures', which is not included in the current computer curriculum, the development of achievement standards and assessment standards were needed in this section. This paper developed the achievement standards and assessment standards in 'Problem-solving methods and procedures' section in order to give the guideline of the teaching strategies and evaluation methods in the revised Informatics curriculum.

• Knowledge Management Research
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• v.16 no.3
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• pp.65-80
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• 2015

Problems solved by the TRIZ method have been developed and applied in many fields ranging from management as well as engineering. Most of the problems occurring in the construction site should be applied immediately. To solve the problem of building engineering, formulation of the problem solving process using the TRIZ method is needed. This study classified and analyzed the problem solving process of architectural engineering technology in accordance with the procedures of TRIZ, and showed the case of solving problem in the field and the availability of TRIZ theory in architectural engineering. This paper shows that the TRIZ theory can be used as a tool for creative problem solving and cost reduction in architectural engineering.

• Journal of the Korean Operations Research and Management Science Society
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• v.7 no.1
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• pp.11-16
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• 1982

A method is described for the solution of a linearly constrained program with parametric nonlinear objective function. The algorithm proposed in this paper may be regarded as an extension of the simplex method for parametric linear programming. Namely, it specifies the basis at each stage such that feasibility ana optimality of the original problem are satisfied by the optimal solution of the reduced parametric problem involving only nonbasic variables. It is shown that under appropriate assumptions the algorithm is finite. Parametric procedures are also indicated for solving each reduced parametric problem by maintaining the Kuhn-Tucker conditions as the parameter value varies.

• The Journal of Korean Academic Society of Nursing Education
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• v.18 no.1
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• pp.34-42
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• 2012

Purpose: The purpose of this study was to investigate factors which influence the process of problem solving in nursing students during clinical practice. Method: Data were collected by questionnaires from 511 nursing students in from April 10 to June 10, 2011. Data were analyzed by Pearson's correlation coefficients and multiple regression procedures. Result: The values regarding self-leadership (mean 3.62), self-directed learning readiness (mean 3.53) and problem solving process (mean 3.37) were higher than the median. There were significant correlations between all the predictive variables and the process of problem solving. The greatest factors influencing the process of problem solving in nursing students were self-leadership and self-directed learning readiness (54.3%). Conclusion: By using the results of this study as a foundation, nursing education curriculum should be comprised of self-leadership and self-directed learning readiness for improvement of nursing students' problem solving process.

• The Journal of Korean Association of Computer Education
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• v.15 no.1
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• pp.1-11
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• 2012

Developing middle and high students' information literacy and creative problem-solving skills in this information-oriented society is very important and for this reason, the subject of informatics has been established. However, little research on creative problem solving literacy of informatics textbooks has been conducted. Therefore, the purpose of this paper is to quantitatively analyze whether 'problem-solving methods and procedures' parts in informatics textbooks in middle schools present creative problem solving literacy or not and in what degree. Data were quantitatively analyzed using the Gil-Su Choi method. The result of data analysis indicated that all the textbooks turned out to be correct range in the category of the "composition of various learning activities," but got out of range in some categories such as "problem-solving process reflection" and "problem-solving strategy proposal". Also a few textbooks haven't satisfied in important indexes and activities. So, we suggest that more 'problem-solving process reflection' and 'problem-solving strategy proposal' parts should be included in the informatics textbook and more various forms of learning activities be utilized well as the ratio of activities needed primary and high mental processes be kept the balance.

• The Mathematical Education
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• v.58 no.1
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• pp.79-99
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• 2019

This study is a study to collect information about 'Limitations of functions' related learning. Especially, this study was conducted on three students who can find answers by algebraic procedure in the process of extreme problem solving. Students have had the experience of converting from their algebraic procedures to graphical expressions. This shows how they reflect on their algebraic procedures. This study is a study that observes these parts. To accomplish this, twelfth were teaching experiment in three high school students. And we analyzed the contents related to the research topic of this study. Through this, students showed the difference of expressions in the method of finding limits by using algebraic interpretation methods and graphs. In addition, we examined the connectivity of the limitations of functions problem solving process of functions using algebraic procedures and graphs in the process of converting algebraic expressions to graph expressions. This study is a study of how students construct limit concepts. As in this study, it is meaningful to accumulate practical information about students' limit conceptual composition. We hope that this study will help students to study limit concept development process for students who have no limit learning experience in the future.

• Structural Engineering and Mechanics
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• v.14 no.3
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• pp.263-285
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• 2002

This paper presents a numerical procedure for solving initial-value problems using the special functions which belong to a class of Rvachev's basis functions $R_{bf}$ based on algebraic and trigonometric polynomials. Because of infinite derivability of these functions, derivatives of all orders, required by differential equation of the problem and initial conditions, are used directly in the numerical procedure. The accuracy and stability of the proposed numerical procedure are proved on an example of a single degree of freedom system. Critical time step was also determined. An algorithm for solving multiple degree of freedom systems by the collocation method was developed. Numerical results obtained by $R_{bf}$ functions are compared with exact solutions and results obtained by the most commonly used numerical procedures for solving initial-value problems.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.13 no.1
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• pp.13-20
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• 2009

The IPSAP which is a finite element analysis program has been developed for high parallel performance computing. This program consists of various analysis modules - stress, vibration and thermal analysis module, etc. The M orthogonal block Lanczos algorithm with shiftinvert transformation is used for solving eigenvalue problems in the vibration module. And the multifrontal algorithm which is one of the most efficient direct linear equation solvers is applied to factorization and triangular system solving phases in this block Lanczos iteration routine. In this study, the performance enhancement procedures of the IPSAP are composed of the following stages: 1) communication volume minimization of the factorization phase by modifying parallel matrix subroutines. 2) idling time minimization in triangular system solving phase by partial inverse of the frontal matrix and the LCM (least common multiple) concept.

• Journal of the Korea Safety Management & Science
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• v.6 no.2
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• pp.141-154
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• 2004

The objective of this paper is to develop the efficient heuristic method for solving the minimum makespan problem of the job shop scheduling. The proposed heuristic method is based on a constraint satisfaction problem technique and a improved randomizing search algorithm. In this paper, ILOG programming libraries are used to embody the job shop model, and a constraint satisfaction problem technique is developed for this model to generate the initial solution. Then, a improved randomizing search algorithm is employed to overcome the increased search time of constrained satisfaction problem technique on the increased problem size and to find a improved solution. Computational experiments on well known MT and LA problem instances show that this approach yields better results than the other procedures.

• Communications of Mathematical Education
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• v.24 no.1
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• pp.67-106
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• 2010

This paper tries to analyze how effective the problem posing method through Brainwriting can be on mathematical problem solving and creativity as a way to seek a new pedagogy to enhance student problem solving levels and creativity in mathematics. The findings of the study can be summarized as follows: First, the Brainwriting problem posing method improved students' abilities to alter problems, suggest new problems from multi-perspectives, and solve them. All procedures for such were obtained through discussions among group members. Second, the Brainwriting problem posing method resulted in positive effects on fluency and originality among components of creativity, but not on flexibility. That is, studying mathematics with this method helped students develop creativity levels not in terms of flexibility but of fluency and originality. Third, the interest rate in mathematics learning rose for those who studied mathematics by adopting the Brainwriting problem posing method. Finally, this study caused the Brainwriting problem posing method to be more deeply understood and appreciated from a new perspective.