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Joseph Jeyaraj Joanna,Wald Navé,Harland Tony 서울대학교 교육연구소 2021 Asia Pacific Education Review Vol.22 No.3
Higher education institutions are seen as pivotal for fostering national economic growth in a globalised knowledge economy. Conducting research is an important aspect of that role, and there is pressure on institutions to increase their knowledge production, as well as to ofer advanced research degrees. This requires academics with doctoral level qualifcation who research in their feld. Research productivity is important for institutions because it contributes to prestige and better rankings in league tables, which result in more or better resources. This qualitative study examines the notion of ‘turning teachers into academics’ through the experiences of lecturers in a teaching-focused institution in Malaysia seeking university status. Becoming research active requires resources and a supportive environment that were largely unavailable, and so participants experienced an unhealthy intensifcation of their academic work and struggled to do research or complete their PhD qualifcations. The study showed that a successful transition required teachers to be genuinely motivated to do research and the institutions to provide adequate support. Under current circumstances of ferce competition between institutions and the inability to compromise teaching allocations, it is not clear how, or if, such a transition can happen without adversely afecting staf wellbeing.
A new method for progressive collapse analysis of RC frames
Reza Abbasnia,Foad Mohajeri Nav,Nima Usefi,Omid Rashidian 국제구조공학회 2016 Structural Engineering and Mechanics, An Int'l Jou Vol.60 No.1
During the recent years, resistance mechanisms of reinforced concrete (RC) buildings against progressive collapse are investigated extensively. Although a general agreement is observed about their qualitative behavior in technical literature, there is not such a comprehensive point of view regarding the quantitative methods for predicting collapse resistance of RC members. Therefore, in the present study a simplified theoretical method is developed in order to predict general behavior of RC frames under the column removal scenario. In the introduced method, the robustness of the frame is extracted based on the capacity of the beams. The proposed method expresses ultimate arching and catenary capacities of the beams and also obtains the corresponding vertical displacements. Based on the calculated capacities, the introduced method also provides a quantitative assessment of structural robustness and determines whether or not the collapse occurs. The capability of the method is evaluated using experimental results in the literature. The evaluation study indicates that the proposed theoretical procedure can establish a reliable foundation for progressive collapse assessment of RC frame structures.
Rashidian, Omid,Abbasnia, Reza,Ahmadi, Rasool,Nav, Foad Mohajeri Korea Concrete Institute 2016 International Journal of Concrete Structures and M Vol.10 No.4
Many experimental studies have evaluated the in-plane behavior of reinforced concrete frames in order to understand mechanisms that resist progressive collapse. The effects of transverse beams, frames and slabs often are neglected due to their probable complexities. In the present study, an experimental and numerical assessment is performed to investigate the effects of transverse beams on the collapse behavior of reinforced concrete frames. Tests were undertaken on a 3/10-scale reinforced concrete sub-assemblage, consisting of a double-span beam and two end columns within the frame plane connected to a transverse frame at the middle joint. The specimen was placed under a monotonic vertical load to simulate the progressive collapse of the frame. Alternative load paths, mechanism of formation and development of cracks and major resistance mechanisms were compared with a two-dimensional scaled specimen without a transverse beam. The results demonstrate a general enhancement in resistance mechanisms with a considerable emphasis on the flexural capacity of the transverse beam. Additionally, the role of the transverse beam in restraining the rotation of the middle joint was evident, which in turn leads to more ductile behavior. A macro-model was also developed to further investigate progressive collapse in three dimensions. Along with the validated numerical model, a parametric study was undertaken to investigate the effects of the removed column location and beam section details on the progressive collapse behavior.
Progressive Collapse of Exterior Reinforced Concrete Beam–Column Sub-assemblages
Omid Rashidian,Reza Abbasnia,Rasool Ahmadi,Foad Mohajeri Nav 한국콘크리트학회 2016 International Journal of Concrete Structures and M Vol.10 No.4
Many experimental studies have evaluated the in-plane behavior of reinforced concrete frames in order to understand mechanisms that resist progressive collapse. The effects of transverse beams, frames and slabs often are neglected due to their probable complexities. In the present study, an experimental and numerical assessment is performed to investigate the effects of transverse beams on the collapse behavior of reinforced concrete frames. Tests were undertaken on a 3/10-scale reinforced concrete sub-assemblage, consisting of a double-span beam and two end columns within the frame plane connected to a transverse frame at the middle joint. The specimen was placed under a monotonic vertical load to simulate the progressive collapse of the frame. Alternative load paths, mechanism of formation and development of cracks and major resistance mechanisms were compared with a two-dimensional scaled specimen without a transverse beam. The results demonstrate a general enhancement in resistance mechanisms with a considerable emphasis on the flexural capacity of the transverse beam. Additionally, the role of the transverse beam in restraining the rotation of the middle joint was evident, which in turn leads to more ductile behavior. A macro-model was also developed to further investigate progressive collapse in three dimensions. Along with the validated numerical model, a parametric study was undertaken to investigate the effects of the removed column location and beam section details on the progressive collapse behavior.