• International Journal of Advanced Culture Technology
• /
• 제9권4호
• /
• pp.40-51
• /
• 2021

This study was conducted with the aim of constructing a unified model according to the structure of qualification types of lifelong education professionals for the disabled. The research method consisted of procedures in which literature analysis and expert meetings were constructed in connection with each other. The contents of the study were suggested from the classification of qualification types into professional teacher type and coordinator type by focusing on special education and rehabilitation, which are related convergence fields that affect the qualification training of lifelong education professionals for the disabled. The two convergence fields, such as special education and rehabilitation welfare, lead to a separate application base from the perspective of education and welfare for the qualification of lifelong education professionals for the disabled, and finally confusion and conflict in the nature and contents of the curriculum and related services. A dichotomy structure system in which this phenomenon results in a divided type of qualification training for lifelong education professionals with disabilities was composed of several samples. In this regard, the curriculum and related services that can build convergence fields related to lifelong education for the disabled were reflected in the context of priority through the criteria that should be emphasized from the standpoint of the disabled in the overall category of establishing lifelong education support system for the disabled. In addition, by forming four qualification criteria centering on this, the common convergence field was composed of special education, thereby enhancing the aspect of inclusion in the rehabilitation welfare field and specific convergence into lifelong education for the disabled. As a result, the two qualification types were unified.

• 융합보안논문지
• /
• 제3권1호
• /
• pp.51-57
• /
• 2003

본 논문에서는 공통평가기준 기반 보호프로파일의 보안기능요구사항 개발 방법을 침입탐지시스템 보호프로파일 개발 과정을 중심으로 제시함으로써, IT 제품 및 시스템 보호프로파일 개발시 각 설정 단계별 세부적인 개발 방법에 관하여 논한다.

• 융합보안논문지
• /
• 제2권2호
• /
• pp.137-142
• /
• 2002

정보보호시스템 공통평가기준이 고시되고 CCRA 가입이 활발하게 추진되면서 평가보증등급(EAL)에 관한 관심이 증대되고 있다. 본 논문에서는 기존의 프로세스 평가 기준들이 취하고 있던 평가 등급과 공통평가기준의 평가보증등급을 비교함으로써 정보보호시스템 평가에 활용되고 있는 평가보증등급이 가지고 있는 특징들을 확인하였다.

• 융합보안논문지
• /
• 제6권4호
• /
• pp.133-140
• /
• 2006

IT 제품 개발환경에 대한 보안수준을 점검하기 위해서는 IT 제품 개발환경에 존재하는 취약성과 각종 위협 요인을 분석하고 정보보호 수준을 정확히 평가하고 이를 개선시킬 방향을 제시하는 기준과 평가 도구가 필요하다. 또한 이를 위해 관련분야에 대한 정보보호 수준을 평가하고 개선할 수 있는 평가 지표나 기준과 이를 실제 IT 제품 개발환경에 적용할 수 있는 평가방법론이 연구되어야 한다. 본 연구는 IT 제품 개발 환경의 보안수준을 점검하기 위한 확인 도구를 개발하는 것을 목표로 하고 있다.

• 한국화재소방학회논문지
• /
• 제6권1호
• /
• pp.17-22
• /
• 1992

We have derived the general transfer equation for governing the continuity, energy transfer, mass and momentum transfer, and turbulent energy dissipation rate within the fire compartment which has the 800t fire source at the center of the floor. The governing transfer equations have been descretized using the finite volume approach and numerically experimented under the SIMPLE algorithm. In order for the SIMPLE algorithm approach to be physically reliable, the test results are compared with those of Morita's SOR Method using Conjugate Residual Method and found to be close to physical values though the computational convergence time still remains to be upgraded. The treatment of source terms in the system of finite difference equations has been critical in order to converge the governing equations within the appropriate time steps. The criteria of convergence allowance for the whole domain have been checked and the sudden change of the non-linear effects from the source term have been avoided. The criteria has been allowed to be for 5$\times$10$^{-5}$ .

• 한국전산구조공학회:학술대회논문집
• /
• 한국전산구조공학회 2001년도 가을 학술발표회 논문집
• /
• pp.183-190
• /
• 2001

Topology optimization. has been evolved into a very efficient conceptual design tool and has been utilized into design engineering processes in many industrial parts. In recent years, topology optimization has become the focus of structural optimization design and has been researched and widely applied both in academy and industry. Traditional topology optimization has been using homogenization method and optimality criteria method. Homogenization method provides relationship equation between structure which includes many holes and stiffness matrix in FEM. Optimality criteria method is used to update design variables while maintaining that volume fraction is uniform. Traditional topology optimization has advantage of good convergence but has disadvantage of too much convergency time and additive checkerboard prevention algorithm is needed. In one way to solve this problem, element remove method is presented. Then, it is applied to many examples. From the results, it is verified that the time of convergence is very improved and optimal designed results is obtained very similar to the results of traditional topology using 8 nodes per element.

• 한국산업융합학회 논문집
• /
• 제21권6호
• /
• pp.317-327
• /
• 2018

The perception of earthquake in Korea has changed due to the earthquake that occurred in Gyeongju and Pohang, and the earthquake has become an important factor in infrastructure management. Damage to infrastructures in the event of an earthquake is extensive. In particular, damage to infrastructures that perform public function used to spread to the whole area. From the point of view of earthquake disaster prevention, it is very important for the public to define what infrastructures are important management targets and to prepare a countermeasure. In this study, we propose a method to evaluate the importance of infrastructure to effectively manage infrastructures for earthquakes. For this purpose, important factors for the railway bridges, power generation and electric power facilities, and apartment complexes are suggested. AHP analysis is conducted to suggest priorities. In addition, the evaluation criteria for infrastructure importance are presented.

• 대한수학회지
• /
• 제51권6호
• /
• pp.1155-1175
• /
• 2014

We present a unified local and semilocal convergence analysis for secant-type methods in order to approximate a locally unique solution of a nonlinear equation in a Banach space setting. Our analysis includes the computation of the bounds on the limit points of the majorizing sequences involved. Under the same computational cost our semilocal convergence criteria can be weaker; the error bounds more precise and in the local case the convergence balls can be larger and the error bounds tighter than in earlier studies such as [1-3,7-14,16,20,21] at least for the cases of Newton's method and the secant method. Numerical examples are also presented to illustrate the theoretical results obtained in this study.

• Industrial Engineering and Management Systems
• /
• 제3권1호
• /
• pp.63-70
• /
• 2004

In this paper, we consider the adjustment of convergence on Color Display Tube (CDT). Convergence is a measure of how well the red, green and blue beams are physically aligned with each other to strike the same area on the screen. When misconvergence (convergence error) occurs, one way of compensating it is to attach several ferrite sheets on the inner part of Deflection Yoke (DY). We suggest an optimization model of misconvergence compensation process and report test results for 81 DY samples. As a result, more than 90% of the samples could be made to satisfy the required convergence criteria.

• 대한기계학회논문집A
• /
• 제27권7호
• /
• pp.1210-1216
• /
• 2003

Topology optimization is applied to determine the layout of a structural component with a specified frequency by minimizing the difference between the specified structural frequency and a given frequency. The homogenization design method is employed and the topology design problem is solved by the optimality criteria method. The value of a weighting factor in the optimality criteria plays an important role in this topology design problem. The modified optimality criteria method approximated by using the binomial expansion is suggested to determine the suitable value of the weighting factor, which makes convergence stable. If a given frequency is set as an excited frequency, it is possible to avoid resonance by moving away the specified structural frequency from the given frequency. The results of several test problems are compared with previous works and show the validity of the proposed algorithm.