针对Web应用系统的特点,在自动化测试生命周期方法学(Automated Test Life Cycle Methodology,ATLM)基础上并结合软件工程的思想提出了一种有效的Web应用性能测试过程即性能测试工程,从工程学的角度对性能测试的全过程进行了全面的分析...针对Web应用系统的特点,在自动化测试生命周期方法学(Automated Test Life Cycle Methodology,ATLM)基础上并结合软件工程的思想提出了一种有效的Web应用性能测试过程即性能测试工程,从工程学的角度对性能测试的全过程进行了全面的分析和探讨,并结合实际案例,对所提出的理论进行了验证。展开更多
The determinations of flexural behavior of some engineering structures are based on different theories and equations, but it has been observed that some of these equations may not give true representation. This work h...The determinations of flexural behavior of some engineering structures are based on different theories and equations, but it has been observed that some of these equations may not give true representation. This work has looked into the difference that may occur between theoretical and experimental results. An experimental test carried out on models of waffle and solid slabs structures were described and results from twenty test samples are presented. Each specimen was subjected to an incremental axial loading of 1 kN interval after 28 days of casting. The flexural moments, deflections and crack width at failure were obtained. The experimental flexural crack and theoretical flexural cracks for both types of slabs were compared. The result for flexural moments for waffle was 5.526 kNm, while solid slab was 3.684 kNm. The deflections showed that waffle slabs has 3.64 mm while solid has 9.28 mm, hence waffle has a higher structural stiffness than solid slabs, but the flexural cracks did not give the same results especially for the estimated crack width. It was concluded that estimated results based on developed equations may not be accurate because it is based on ideal situation.展开更多
An experimental study was conducted on three models of solar collectors having an absorber made of concrete designed and built in the TPL （Thermal Process Laboratory）. A sequence of tests was performed on these mode...An experimental study was conducted on three models of solar collectors having an absorber made of concrete designed and built in the TPL （Thermal Process Laboratory）. A sequence of tests was performed on these models for the two air circulation models （forced and natural） in order to compare their thermal performance. The results are presented in terms of useful energy, stored energy and thermal efficiency of each model.展开更多
文摘针对Web应用系统的特点,在自动化测试生命周期方法学(Automated Test Life Cycle Methodology,ATLM)基础上并结合软件工程的思想提出了一种有效的Web应用性能测试过程即性能测试工程,从工程学的角度对性能测试的全过程进行了全面的分析和探讨,并结合实际案例,对所提出的理论进行了验证。
文摘The determinations of flexural behavior of some engineering structures are based on different theories and equations, but it has been observed that some of these equations may not give true representation. This work has looked into the difference that may occur between theoretical and experimental results. An experimental test carried out on models of waffle and solid slabs structures were described and results from twenty test samples are presented. Each specimen was subjected to an incremental axial loading of 1 kN interval after 28 days of casting. The flexural moments, deflections and crack width at failure were obtained. The experimental flexural crack and theoretical flexural cracks for both types of slabs were compared. The result for flexural moments for waffle was 5.526 kNm, while solid slab was 3.684 kNm. The deflections showed that waffle slabs has 3.64 mm while solid has 9.28 mm, hence waffle has a higher structural stiffness than solid slabs, but the flexural cracks did not give the same results especially for the estimated crack width. It was concluded that estimated results based on developed equations may not be accurate because it is based on ideal situation.
文摘An experimental study was conducted on three models of solar collectors having an absorber made of concrete designed and built in the TPL （Thermal Process Laboratory）. A sequence of tests was performed on these models for the two air circulation models （forced and natural） in order to compare their thermal performance. The results are presented in terms of useful energy, stored energy and thermal efficiency of each model.
