• 컴퓨터교육학회논문지
• /
• 제14권6호
• /
• pp.19-30
• /
• 2011

본 연구에서는 $21^{st}$ Century Skills와 Computational thinking의 관점에서 컴퓨터 교육의 특성을 분석하고자 하였다. $21^{st}$ Century Skills는 현세계에서 성공적인 삶을 살아가기 위한 필수 능력으로 학습과 관련하여 비판적 사고, 문제 해결 능력, 통신 능력과 협동 능력이 포함되어 있다. Computational thinking은 오늘날 융합 시대에 요구되는 기초 능력이라 할 수 있으며, 컴퓨터과학 교육의 핵심 개념이라 할 수 있다. 본 연구에서는 먼저, $21^{st}$ Century Skills와 Computational thinking의 특징을 살펴보고, 이러한 것들이 현재 중 고등학교에서 컴퓨터교육을 위해 운영되고 있는 '정보' 과목의 교육과정과 어떻게 관련이 되는지를 분석하였다. 이를 통하여 초 중 고에서의 컴퓨터 교육에 대한 중요성 및 필요성을 도출해냈다.

• 한국전산유체공학회지
• /
• 제21권1호
• /
• pp.1-9
• /
• 2016

Atmospheric icing may have significant effects not only on safety of aircraft in air, but also on performance of wind turbine and power networks on ground. Thus, ice protection measure should be developed to protect these systems from icing hazards. A very efficient method is the electro-thermal de-icing based on a process by which ice accretion is melted and blown away through aerodynamic forces. In this computational study, a state-of-the-art icing code, FENSAP-ICE, was used for the analysis of electro thermal de-icing system. Computational results including detailed conjugate heat transfer analysis were then validated with experimental data. Further, the computational model was applied to the DU21 airfoil section of NREL 5MW wind turbine with calculated heater parameters.

• 한국실내디자인학회논문집
• /
• 제41호
• /
• pp.266-274
• /
• 2003

Synectics is one of several techniques used to enhance brainstorming by taking a more active role and introducing metaphor and structure into the process. It is unclear at what level of specificity this should be formulated as a pattern. This thesis reviews recent computational as well as experimental work on analogical reasoning based on synectics. New results regarding information processing of analogical reasoning stages, major computational models and recent attempts to compare these models are reviewed. Computational models are also discussed in the computational as well as cognitive psychology perspectives. Future directions in analogical reasoning research are proposed. The following import is the need to accommodate the typology and normal assessment in the concrete circumstances where actual reasoning and problem solving take place. In order to get to this end, we used computational models by Thagard who take the stand of ‘Computational Philosophy of Science’, which assumes ‘Weak AI’ to explicate what constitute the very pecularity of Analogical Reasoning.

• Journal of applied mathematics & informatics
• /
• 제27권3_4호
• /
• pp.865-873
• /
• 2009

Goodman([3]) presented the question of finding a best possible upper bound of the form $t(G)\;+\;t(G^c)$, where t(G) denote the number of triangles in given graph G. In this, the form of squares of degrees is appeared and many researches have been pursued as an application related to this. Here, we would like to deal with corollary related to the results of Nikiforov([6]).

• 한국통신학회논문지
• /
• 제34권5C호
• /
• pp.521-526
• /
• 2009

In this paper, a complex-valued recursive least squares escalator filter algorithm with reduced computational complexity for complex-valued signal processing applications is presented. The local tap weight of RLS-ESC algorithm is updated by incrementing its old value by an amount equal to the local estimation error times the local gain scalar, and for the gain scalar, the local input autocorrelation is calculated at the previous time. By deriving a new gain scalar that can be calculated by using the current local input autocorrelation, reduced computational complexity is accomplished. Compared with the computational complexity of the complex-valued version of RLS-ESC algorithm, the computational complexity of the proposed method can be reduced by 50% without performance degradation. The reduced computational complexity of the proposed algorithm is even less than that of the LMS-ESC. Simulation results for complex channel equalization in 64QAM modulation schemes demonstrate that the proposed algorithm has superior convergence and constellation performance.

• 인터넷정보학회논문지
• /
• 제20권6호
• /
• pp.85-93
• /
• 2019

Computational Science and Engineering is a convergence study that understands and solves complex problems such as science, engineering, and social phenomena through modeling using computing resources. Computational science and engineering combines algorithms, computational and informatics, and infrastructure. The importance of computational science is increasing with the improvement of computer performance and the development of large data processing technology. In Korea, Korea Institute of Science and Technology Information (KISTI) has been developing national computational science engineering software and utilization technology by combining basic science and computing technology through EDISON project. The EDISON project builds an open EDISON platform and integrates and services information systems in seven areas of computational science and engineering (computational thermal fluids, nanophysics, computational chemistry, structural dynamics, computational design, and computational medicine). Using this, we have established a web-based curriculum to lay the groundwork for fostering scientific talent and commercializing computational science and engineering software. The purpose of this study is to derive the quality characteristic factors of computational science platform and to empirically examine the effect on user satisfaction. This paper examines how the quality characteristics of information systems, the computational science engineering platform, affect the user satisfaction by modifying the research questions according to the propensity of the computational science platform by referring to the success factors of DeLone and McLean's information system. Based on the results of this study, we will suggest strategic implications for platform improvement by searching the priority of quality characteristics of computational science platform.

• 융합정보논문지
• /
• 제11권1호
• /
• pp.167-174
• /
• 2021

본 연구의 목적은 컴퓨팅 사고력 수업이 대학생의 학습몰입과 협력적 자기효능감에 미치는 영향을 살펴보고 이를 통해 교양교육으로써 컴퓨팅 사고력 수업 효과를 탐색하는 데 있다. 본 연구를 위해 충남의 4년제 대학 1학년 학생 177명을 대상으로 학습몰입과 협력적 자기효능감 설문을 시행하였다. 수집된 자료는 Stata IC 14를 사용하여 ��2 test와 t-test 분석을 시행하였다. 본 연구를 통해 도출된 결과는 다음과 같다. 첫째, 컴퓨팅 사고력 수업을 수강한 학생의 학습몰입은 수강하지 않은 학생과 비교해 유의(t=3.837 p<.001)하게 높게 나타났다. 둘째, 컴퓨팅 사고력 수업을 수강한 학생의 협력적 자기효능감은 수강하지 않은 학생과 비교해 유의(t=2.277 p<.01)하게 높게 나타났다. 따라서 컴퓨팅 사고력 수업은 학습몰입과 협력적 자기효능감에 긍정적인 영향을 미치는 것으로 나타났다. 이와 같은 연구 결과를 바탕으로 컴퓨팅 사고력 수업의 중요성과 효과, 논의와 시사점을 제시하였다.

• 한국전산유체공학회지
• /
• 제15권2호
• /
• pp.55-61
• /
• 2010

A dependence of weighting parameter in preconditioning method for solving low Mach number flow with incompressible flow nature is investigated. The present preconditioning method employs a finite-difference method applied Roe‘s flux difference splitting approximation with the MUSCL-TVD scheme and 4th-order Runge-Kutta method in curvilinear coordinates. From the computational results of benchmark flows through a 2-D backward-facing step duct it is confirmed that there exists a suitable value of the weighting parameter for accurate and stable computation. A useful method to determine the weighting parameter is introduced. With this method, high accuracy and stable computational results were obtained for the flow with low Mach number in the range of Mach number less than 0.3.

• 한국가시화정보학회지
• /
• 제4권1호
• /
• pp.8-13
• /
• 2006

Fire simulation has been developed for decades to analyze fire cases and provide a tool to study fundamental fire dynamics and combustion. There are three way of fire simulation which are a full scale simulation, an experimental simulation and a computational simulation. In case of a full scale simulation, because a higher cost, a higher risk, more efforts are needed, a demand for it has been decreased. But recently a demand for an experimental simulation and a computational simulation has been increased. A computational simulation has several advantages; lower cost, short period, many case studies, more visual results, a quantitative result and etc. FDS(Fire Dynamics Simulator) which has been developed in BFRL(Building and Fire Research Laboratory), NIST(National Institute of Standards and Technology) is a popular world wide code for fire simulation. Lack of accurate predictions by the model could lead to erroneous conclusions with regard to fire safety. All results should be evaluated by the informed judgment of the qualified user.

• 동력기계공학회지
• /
• 제17권6호
• /
• pp.33-39
• /
• 2013

It is very important to analyze the dynamic responses of the shell structures from the viewpoint of the design of shell structures with a variety of axisymmetric loadings. In this paper, the computational algorithm for the dynamic response analysis of an cylindrical shell with axisymmetric loading is formulated by the transfer mass coefficient method based on the transfer of mass coefficient. After the computational programs for obtaining the dynamic responses of cylindrical shells with axisymmetric loading are made by the transfer mass coefficient method and the finite element method, the computational results by both methods are compared. From the computational results, we can confirm that the transfer mass coefficient method has the effectiveness in the dynamic response analyses of cylindrical shells with a variety of axisymmetric loadings.