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Volume 11, Issue 3 (Fall 2021)
Abstract
Aims Building information modeling (BIM) is a process based on three-dimensional model that has provided tools to change the educational and professional approach. The purpose of this study is to test an active and constructive educational structure with a focus on the BIM approach and the application of this method in promoting the performance and creativity of architecture students in building technology courses.
Methods The research test was performed by quasi-experimental method with experimental and control groups using pretest and posttest. Pre-test was performed by Torrance creativity test and two design tasks and Mann-Whitney U test was used for post-test.
Findings The findings of the analysis of pre-test results did not show a significant difference between the two groups. But by conducting a post-test, the experimental group in the indicators of concept technicality, coordination of executive issues, site technical plan, quantity and quality of phase two plans, executive details, presentation of design and overall score had a significant advantage over the control group.
Conclusion The results show that the use of the proposed educational method was effective in improving the overall performance of students in the experimental group and had a significant advantage over the performance of the control group. Regarding the promotion of studentschr('39') creativity, no significant difference and superiority was observed between the two groups, but the average ranks of students in the experimental group were significantly better than the control group. Therefore, the research results confirm the increase in studentschr('39') learning using this educational approach.
Y. Maaref, H.a. Pakravan, Kh. Jafarpur,
Volume 19, Issue 7 (July 2019)
Abstract
During the last 3 decades, different therapeutic methods have been used for cancer treatment. Hyperthermia is one of these methods, which destroys the tumor cells with applying temperatures about 41-46°C. Thermal ablations of hepatic tumors near large blood vessels are affected by the heat sink effect of blood vessels. In this study, the heat sink effect of blood vessels on hepatic mono-polar radiofrequency and microwave ablation was investigated. The simulation is performed by numerical solution of bio-heat transfer equation with equations of electrical current or electromagnetic waves. To analyze the heat sink effect of blood vessels, the tissue is modeled with and without blood vessel. The fraction of necrotic tissue is determined for 3 different diameters of blood vessels including 5, 10, and 15 mm. The results show that when the applicator distance to the blood vessel is less than or equal to 8 mm, the necrotic value significantly decreases and the heat sink effect becomes important; however, for distances larger than 30 mm, the necrotic value does not change and the heat sink effect is diminished. The heat sink effect increases with blood vessel diameter due to the blood flow increase. In addition, the results indicated that
the microwave ablation is less affected by the heat sink effect in comparison with the mono-polar radiofrequency.
