• Structural Engineering and Mechanics
• /
• 제81권1호
• /
• pp.11-28
• /
• 2022

This paper considers the combination of cyclic and axial loads to investigate the hysteretic performance of H-section 6061-T6 aluminum alloy members. The hysteretic performance of aluminum alloy members is the basis for the seismic performance of aluminum alloy structures. Despite the prevalence of aluminum alloy reticulated shells structures worldwide, research into the seismic performance of aluminum alloy structures remains inadequate. To address this deficiency, we design and conduct cyclic axial load testing of three H-section members based on a reliable testing system. The influence of slenderness ratios and bending direction on the failure form, bearing capacity, and stiffness degradation of each member are analyzed. The experiment results show that overall buckling dominates the failure mechanism of all test members before local buckling occurs. As the load increases after overall buckling, the plasticity of the member develops, finally leading to local buckling and fracture failure. The results illustrate that the plasticity development of the local buckling position is the main reason for the stiffness degradation and failure of the member. Additionally, with the increase of the slenderness ratio, the energy-dissipation capacity and stiffness of the member decrease significantly. Simultaneously, a finite element model based on the Chaboche hybrid strengthening model is established according to the experiment, and the rationality of the constitutive model and validity of the finite element simulation method are verified. The parameter analysis of twenty-four members with different sections, slenderness ratios, bending directions, and boundary conditions are also carried out. Results show that the section size and boundary condition of the member have a significant influence on stiffness degradation and energy dissipation capacity. Based on the above, the appropriate material constitutive relationship and analysis method of H-section aluminum alloy members under cyclic loading are determined, providing a reference for the seismic design of aluminum alloy structures.

• Structural Engineering and Mechanics
• /
• 제72권5호
• /
• pp.569-583
• /
• 2019

Tubular steel sections are widespread all over the world because of their strength and aesthetic appearance. Tubular steel members may exhibit local buckling such as elephant foot or overall buckling under extreme compression load. Recently, external bonding of fiber reinforced polymers (FRP) sheets for strengthening these members has been explored through experimental research. This paper presents three-dimensional nonlinear finite element analysis (FEA) to investigate the structural behavior of strengthening tubular steel members with FRP against local and overall buckling phenomena. Out-of-roundness and out-of-straightness imperfections were introduced to the numerical models to simulate the elephant foot and overall buckling, respectively. The nonlinear analysis preferences such as the integration scheme of the shell elements, the algorithm for solution of nonlinear equations, the loading procedure, the bisection limits for the load increments, and the convergence criteria were set, appropriately enough, to successfully track the sophisticated buckling deformations. The agreement between the results of both the presented FEA and the experimental research was evident. The FEA results demonstrated the power of the presented rigorous FEA in monitoring the plastic strain distribution and the buckling phenomena (initiation and propagation). Consequently, the buckling process was interpreted for each mode (elephant foot and overall) into three sequential stages. Furthermore, the influence of FRP layers on the nonlinear analysis preferences and the results was presented.

• 정보교육학회논문지
• /
• 제21권1호
• /
• pp.151-160
• /
• 2017

본 연구는 대학교 ICT 활용 실태를 분석하고, ICT 활용 관련 변수들간의 관계 및 교수방법과 ICT 활용과의 관련성을 분석하였다. 연구대상은 교육대학교 교수들 중 198명을 무선표집하여 설문조사를 실시하였다. 분석 결과 여성 교수들과 60대 남성 교수들의 컴퓨터 능력 향상을 위한 지원이 필요하고, 경력이 적은 교수들에게 ICT 활용을 위한 지원 프로그램이 필요한 것으로 나타났다. 교수들이 사용하는 교수방법은 직접 교수방법과 토론 중심 교수방법이 가장 많았으며 ICT 활용을 잘 아는 교수들이 토론 형태의 교수방법을 더 많이 활용하고 있었다. 앞으로 교수들은 교수-학습에 활용하기 위한 컴퓨터가 점점 더 어려워질 것으로 예상하고 있었으며, ICT 활용 교육에서 다른 교수들과 협력적인 수업이 보완되어야 하고 효과적인 교수-학습을 위하여 컴퓨터를 학습해야 할 필요성을 느끼고 있는 것으로 나타났다.

• 의학교육논단
• /
• 제25권1호
• /
• pp.3-16
• /
• 2023

Unlike in the past, standards for the quantity and quality of work expected from medical school faculty are continuously rising, causing changes and stress in various areas. This highlights the need for career development among medical school faculty for professional, personal, organizational, and societal reasons. The role of medical school faculty has become more diverse, leading to an increase in the types and levels of competencies required. Medical schools must support their faculty members with diverse identities in fully utilizing their capabilities to achieve the institution's mission. Furthermore, societal changes suggest that career development for medical school faculty will become even more crucial in the future. To achieve this, both individuals and organizations must make efforts and play appropriate roles. For this purpose, medical schools use a combination of promotion and tenure evaluations and faculty development programs, while individual faculty members follow a career path within the medical school environment. Medical school faculty must be able to meet the evolving demands at each stage of their careers. It is important for professors, who engage in career development, to have a clear sense of their identity and values, and to prioritize their career goals. Medical schools should also ensure that the implicit messages they convey align with the organization's explicit values. Finally, proactively preparing for future changes in society and generations is essential from a long-term perspective.

• 융합정보논문지
• /
• 제9권10호
• /
• pp.163-169
• /
• 2019

본 연구의 목적은 대학교에서 PBL 수업을 우수하게 운영하는 교수들의 수업운영 전략을 탐색하는 것이다. 이를 위해 충남에 위치한 B대학에서 2017년 1학기, 2학기, 2018년 1학기동안 PBL 우수 사례자로 선정된 교수 6명이 작성한 수업결과 보고서와 사례발표회 발표 자료를 활용하여 수업운영 전략 관련 내용을 귀납적 분석방법을 통해 분석하였다. 연구결과 PBL 우수 사례자로 선정된 교수들은 수업운영 시 교실문화, 학습촉진, 평가의 3개 영역과 관련하여 13개의 전략을 사용하고 있음이 규명되었다. 향후 필요한 연구와 지원을 제안하면 다음과 같다. 첫째, PBL을 우수하게 운영하는 교수들의 수업운영 전략에 대한 연구가 보다 확대되어야 한다. 둘째, PBL을 우수하게 운영하는 교수들과 일반교수들의 운영전략에 관한 비교연구가 수행되어야 한다. 셋째, 조직 차원에서 PBL을 우수하게 운영하는 교수들의 수업운영 전략을 공유할 수 있는 시스템이 지원되어야 한다.

• The Korean Journal of Ceramics
• /
• 제5권1호
• /
• pp.82-86
• /
• 1999

For nonconducting perovskite titanates ATiO3 and A'1/2A"1/2TiO3, 5 ferroelectric members were discriminated from 17 quantum paraelectric members via average mass of A ions m(A): ferroelectric for m(A)〉110 a.u. and quantum paraelectric for m(A)<100 a.u. An intuitive explanation of the origin of the discrimination is given concenrned with the ferroelectric soft modes in perovskite ATiO3. Based on the above discrimination, trial synthesis of ferroelectric candiate substances are presented.

• Journal of Information Science Theory and Practice
• /
• 제1권1호
• /
• pp.27-41
• /
• 2013

We investigated how bibliometric indicators such as publication count and citation count affect the assessment of research performance by computing various bibliometric scores of the works of Korean LIS faculty members and comparing the rankings by those scores. For the study data, we used the publication and citation data of 159 tenure-track faculty members of Library and Information Science departments in 34 Korean universities. The study results showed correlation between publication count and citation count for authors with many publications but the opposite evidence for authors with few publications. The study results suggest that as authors publish more and more work, citations to their work tend to increase along with publication count. However, for junior faculty members who have not yet accumulated enough publications, citations to their work are of great importance in assessing their research performance. The study data also showed that there are marked differences in the magnitude of citations between papers published in Korean journals and papers published in international journals.

• The Journal of Asian Finance, Economics and Business
• /
• 제8권1호
• /
• pp.1017-1030
• /
• 2021

Constructed upon Knowledge Management (KM) processes, the current study aims to investigate the interrelationship between Knowledge Sharing (KS) attitude among the faculty members and KM processes in higher education institutes (HEIs) in Pakistan along with the intervening role of subjective norms between KM processes and KS attitude. This research incorporated the theory of Planned Behavior (TPB) and the theory of Reasoned Action (TRA) to conceptualize the KS behavior by using a sample frame of 302 academic and administrative staff from research-based HEIs in Quetta, Pakistan. A questionnaire-based survey was conducted on permanent faculty members from different universities of Quetta, Pakistan. The finding of the study shows a positive attitude among the researchers. The study empirically examined the interface between KM processes and KS attitude and higher education performance while providing valuable insights into the prevailing literature by investigating the mediating role of subject norms. The impact of subjective norms on KS attitude and KM process indicates the importance and basic determinant in organizational premises and improvement of skills of faculty management in HEIs. The partial mediation also reveals the importance of subjective norms in the development of faculty members' KM and KS attitude process.

• International Journal of Knowledge Content Development & Technology
• /
• 제12권1호
• /
• pp.67-83
• /
• 2022

This study aims to evaluate some academic institutional repositories (IRs) in Ghana. Data were collected using observation and interview methods by examining the various websites of seven (7) selected academic institutional repositories in Ghana. The findings revealed that the University of Ghana, Legon, leads records count of the seven Institutional Repository (IRs) examined. Dspace was the prioritized software for managing and preserving the digital contents of these IRs. Theses, dissertations and research articles were the leading contents deposited on the IRs. The majority of the IRs have incorporated RSS (Rich Site Summary or Really Simple Syndication) feeds on their IRs with few using other Web 2.0 features. English was the only interface language used on all the IRs. From the interview, the findings revealed that most of the faculty members did not use the IR very often and 9(42.9) also indicated that, they have never deposited their materials on the IR. Faculty members again indicated that, inadequate ICT connectivity and infrastructure, unreliable power supply, Copyrights and intellectual rights, financial constrain, inadequate advocacy and training on the importance of IRs to faculty and users were the major challenges of academic libraries in operating IRs in Ghana.

• 한국임상약학회지
• /
• 제31권4호
• /
• pp.285-292
• /
• 2021

Background: Recently, the Korean Association of Pharmacy Education has been focusing on competency-based education (CBE) and has established required areas of competencies to improve the graduation competency. However, competency-based assessment (CBA) tools for implementing CBE have not yet been developed for faculty members and students to successfully access the assessment tests. Moreover, the faculty members in charge in pharmacy schools have encountered various barriers in recruiting individuals with integrated clinical experience to act as virtual patients. Therefore, this study aimed to identify the advantages and limitations of applying CBA tool and faculty assessors in the development of CBE to ensure the reliability of this assessment. Methods: Utilizing CBA tool, the students' communication skills and styles were assessed. students and faculty assessors were surveyed to evaluate the advantages and limitations of the CBA tool. Results: 8 assessors and 96 students participated in this study. 100% (8/8) of the faculty assessors and 77.4% (65/84) of the students reported that CBA tool is valuable to assess and improve student's ability. 90.5% (76/84) of the students felt confident in applying knowledge to patient-centered care. CBA tool can be a valuable for the instructors in identifying the competency level of students but can also be associated with limitations in implementation to ensure the objectivity and reliability of the CBA. Conclusions: The CBA tool can be valuable in assessing the level of students' competency. Faculty assessors have the advantage of well-prepared themselves for patient roles, so that the time and cost required may be minimized.