• Structural Engineering and Mechanics
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• 제67권4호
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• pp.337-346
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• 2018

The purpose of this study is to investigate thermal post-buckling analysis of a laminated composite beam subjected under uniform temperature rising with temperature dependent physical properties. The beam is pinned at both ends and immovable ends. Under temperature rising, thermal buckling and post-buckling phenomena occurs with immovable ends of the beam. In the nonlinear kinematic model of the post-buckling problem, total Lagrangian approach is used in conjunction with the Timoshenko beam theory. Also, material properties of the laminated composite beam are temperature dependent: that is the coefficients of the governing equations are not constant. In the solution of the nonlinear problem, incremental displacement-based finite element method is used with Newton-Raphson iteration method. The effects of the fibber orientation angles, the stacking sequence of laminates and temperature rising on the post-buckling deflections, configurations and critical buckling temperatures of the composite laminated beam are illustrated and discussed in the numerical results. Also, the differences between temperature dependent and independent physical properties are investigated for post-buckling responses of laminated composite beams.

• 수완나부미
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• 제7권1호
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• pp.59-76
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• 2015

This paper proposes an approach in Southeast Asian studies using a post-colonial framework in the study of post-colonial Southeast Asia. This framework is based on the sociology of knowledge that analyzes the dialectical relationship between science, ideology, and discourse. Post-colonial studies is critical of the concept of universality in science and posits that a scientific statement of a society cannot stand alone, but is made by authors themselves who produce, use, and claim the so-called scientific statement. Several concepts in post-colonial theories can be used to develop area studies, i.e. colonial discourse, subaltern, mimicry, and hybridity. Therefore, this study also explores these concepts to develop a more comprehensive understanding of Southeast Asian culture. The development of post-colonial theories can be used to respond to the hegemony of social theories from Europe and the United States. The main contribution of area studies in the field of the social sciences and humanities is in revealing the hidden interests behind the universal social sciences.

• Wind and Structures
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• 제25권4호
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• pp.343-360
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• 2017

The post-flutter state of streamlined steel box girder is studied in this paper. Firstly, the nonlinear aerodynamic self-excited forces of the bridge deck cross section were investigated by CFD dynamic mesh technique and then the nonlinear flutter derivatives were identified on this basis. Secondly, based on the 2-degree-of-freedom (DOF) coupling flutter theory, the torsional amplitude and the nonlinear flutter derivatives were introduced into the traditional direct flutter calculation method, and the original program was improved to the "post-flutter state analysis program" so that it can predict not only the critical flutter velocity but also the movement of the girder in the post-flutter state. Finally, wind tunnel tests were set to verify the method proposed in this paper. The results show that the effect of vertical amplitude on the nonlinear flutter derivatives is negligible, but the torsional amplitude is not; with the increase of wind speed, the post-flutter state of streamlined steel box girder includes four stages, namely, "little amplitude zone", "step amplitude zone", "linearly growing amplitude zone" and "divergence zone"; damping ratio has limited effect on the critical flutter velocity and the steady state response in the post-flutter state; after flutter occurs, the vibration form is a single frequency vibration coupled with torsional and vertical DOF.

• 기독교교육논총
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• 제70권
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• pp.11-35
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• 2022

본 연구의 목적은 기독교교육학의 실천신학적 접근에 대한 연구로서 실천신학적 접근의 유형에 따른 아홉 가지 교육목회 유형을 제시하는데 있다. 이를 위해 사역의 현장으로서 교회, 사회 이외에 개인적 자아의 차원과 사역을 강조하고자 하며, 이미 논의된 철학적이며 신학적 관점에서의 개인적 실존적 차원, 발달심리학적 관점에서의 삶의 주기 신학의 차원 이외에 사회문화적 차원에서 포스트 디지털 시대가 주는 함의에 기초하고자 한다. 포스트 디지털 시대는 디지털의 인간화로 말미암는 친인간적 디지털 문화를 의미하며, 따뜻한 디지털 문화를 특징으로 하는 시대를 말한다. 이와 연관된 세대를 포스트 디지털 세대라고 한다. 포스트 디지털 세대를 위한 교육목회는 기존의 교회적 차원 및 사회적 차원과 함께 개인적 차원을 포함한다. 세 가지의 교육목회 현장에 대해 간학문적 특성에 따라 비판적 과학적 방법, 비판적 고백적 방법, 비판적 상관 관계적 방법 등으로 아홉 가지의 교육목회 유형이 분류된다. 아홉 가지의 교육목회 유형들에 따른 포스트 디지털 세대가 함양해야 할 대표적인 핵심역량들은 미디어 리터러시, 관계적 정체성, 의사소통, 하이터치, 제자로서의 삶, 매체활용, 통합적 소명, 협업능력, 그리고 다문화 가정 아동 및 청소년의 사회적 회복탄력성 등이다. 포스트 디지털 시대에 포스트 디지털 세대를 위한 교육목회는 역량들에 대한 함양을 필요로 한다.

• 문화기술의 융합
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• 제9권5호
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• pp.481-486
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• 2023

본 연구에서는 간호 대학생이 가상현실을 적용하여 여성건강간호학 실습 교육과정을 적용한 후 메타인지와 비판적 사고에 미치는 교육효과를 질적, 양적으로 혼합연구 방법으로 분석하였다. 본 연구의 설계는 단일군 사전사후 검증을 사용한 양적 연구와 개별 심층 면담을 활용하여 내용 분석한 질적 연구를 활용한 수렴적 혼합연구이다. 양적 연구 결과 메타인지는 가상현실 프로그램 적용 후에 사후 104.16±12.98, 사전 98.59±18.09 (t=1.85, p=.030)로 사후 점수가 사전 점수에 비해 통계적으로 유의하게 높았다. 비판적 사고능력은 프로그램 적용 후에 사후 101.66±7.18, 사전 99.18±15.13 (t=1.00, p=.108)로 통계적으로 유의한 차이가 없었다. 그러므로 가상현실을 활용한 여성건강간호학 실습 교육은 간호대학생의 메타인지를 증진하는 데 도움을 줄 수 있어 간호학 실습 교육으로 활용할 가치가 있다.

• 한국IT서비스학회지
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• 제3권1호
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• pp.117-126
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• 2004

In this study an evaluation method is proposed, with the strong relationship between the ante and post audit works evaluation. The ante evaluation does in general and systematic ways, with past audit results and proposals. The criteria-based evaluation is used for the audit activities and outputs. The critical success factors for the projects applies to the activities evaluation and product evaluation framework to the output. The ante and post evaluation have the cross evaluation items to be the whole and continuous one. Eighteen common evaluation items are derived, with their own evaluation elements in detail, which have only differences of the actually done and expectations between the ante and post. The proposed evaluation makes the ante and post one to be related with each other in a systematic and objective ways, to enhance the reliability of audit results and effectiveness of the audit.

• Steel and Composite Structures
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• 제35권4호
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• pp.567-578
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• 2020

Based on third-order shear deformation shell theory, the present paper investigates post-buckling properties of eccentrically stiffened metal foam curved shells/panels having initial geometric imperfectness. Metal foam is considered as porous material with uniform and non-uniform models. The single-curve porous shell is subjected to in-plane compressive loads leading to post-critical stability in nonlinear regime. Via an analytical trend and employing Airy stress function, the nonlinear governing equations have been solved for calculating the post-buckling loads of stiffened geometrically imperfect metal foam curved shell. New findings display the emphasis of porosity distributions, geometrical imperfectness, foundation factors, stiffeners and geometrical parameters on post-buckling properties of porous curved shells/panels.

• Structural Engineering and Mechanics
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• 제75권6호
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• pp.701-711
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• 2020

This papers studies nonlinear stability and post-buckling behaviors of geometrically imperfect metal foam doubly-curved shells with eccentrically stiffeners resting on elastic foundation. Metal foam is considered as porous material with uniform and non-uniform models. The doubly-curved porous shell is subjected to in-plane compressive loads as well as a transverse pressure leading to post-critical stability in nonlinear regime. The nonlinear governing equations are analytically solved with the help of Airy stress function to obtain the post-buckling load-deflection curves of the geometrically imperfect metal foam doubly-curved shell. Obtained results indicate the significance of porosity distribution, geometrical imperfection, foundation factors, stiffeners and geometrical parameters on post-buckling characteristics of porous doubly-curved shells.

• Journal of Dental Anesthesia and Pain Medicine
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• 제23권1호
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• pp.53-53
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• 2023

• Tuberculosis and Respiratory Diseases
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• 제85권4호
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• pp.358-360
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• 2022