This paper describes the requirements for building accessible user interface for users with autism spectrum disorders (ASD) and presents the user interface (UI) of Open Book, a reading assistive tool for people with A...This paper describes the requirements for building accessible user interface for users with autism spectrum disorders (ASD) and presents the user interface (UI) of Open Book, a reading assistive tool for people with ASD. The requirements are extracted from both existing research on improving reading comprehension for people with ASD, and from the feedback of users and clinical professionals. The findings are applied in practice to create the user interface of Open Book tool. Key screens of the user interface are presented. It is implied that the features of the UI for people with ASD can be successfully applied to improving overall accessibility of any graphical user interface.展开更多
It has been analyzed the influence of the tectonic ambient shear stress value on response spectrum based on the previous theory. Based on the prediction equation BJF94 presented by the famous American researchers, CLB...It has been analyzed the influence of the tectonic ambient shear stress value on response spectrum based on the previous theory. Based on the prediction equation BJF94 presented by the famous American researchers, CLB20, a new prediction formula is proposed by us, where it is introduced the influence of tectonic ambient shear stress value on response spectrum. BJF94 is the prediction equation, which mainly depends on strong ground motion data from western USA, while the prediction equation SEA99 is based on the strong ground motion data from exten-sional region all over the world. Comparing these two prediction equations in detail, it is found that after BJF94′s prediction value lg(Y) minus 0.16 logarithmic units, the value is very close to SEA99′s one. This case demonstrates that lg(Y) in extensional region is smaller; the differences of prediction equation are mainly owe to the differences of tectonic ambient shear stress value. If the factor of tectonic ambient shear stress value is included into the pre-diction equation, and the magnitude is used seismic moment magnitude to express, which is universal used around the world, and the distance is used the distance of fault project, which commonly used by many people, then re-gional differences of prediction equation will become much less, even vanish, and it can be constructed the uni-versal prediction equation proper to all over the world. The error in the earthquake-resistant design in China will be small if we directly use the results of response spectrum of USA (e.g. BJF94 or SEA99).展开更多
基于传统的极化敏感阵列多重信号分类(multiple signal classification,MUSIC)空间谱估计测向算法,提出了结合极化滤波与斜投影算子的极化域-空域二维联合空间谱估计超分辨测向算法。与传统极化MUSIC空间谱估计算法相比,所提算法根据接...基于传统的极化敏感阵列多重信号分类(multiple signal classification,MUSIC)空间谱估计测向算法,提出了结合极化滤波与斜投影算子的极化域-空域二维联合空间谱估计超分辨测向算法。与传统极化MUSIC空间谱估计算法相比,所提算法根据接收到的混叠脉冲信号的时域、极化域特性,进行信号前沿段与叠加段的分段波达方向(direction of arrival,DOA)估计。在估计出前沿段信号极化域与空域参数后,以此对信号叠加段进行极化滤波与斜投影算子处理,更为准确地估计了目标雷达与诱饵的DOA。仿真实验结果表明,该算法可有效抑制诱饵信号的影响,提高目标雷达信号DOA估计的准确度,实现多目标分辨。展开更多
文摘This paper describes the requirements for building accessible user interface for users with autism spectrum disorders (ASD) and presents the user interface (UI) of Open Book, a reading assistive tool for people with ASD. The requirements are extracted from both existing research on improving reading comprehension for people with ASD, and from the feedback of users and clinical professionals. The findings are applied in practice to create the user interface of Open Book tool. Key screens of the user interface are presented. It is implied that the features of the UI for people with ASD can be successfully applied to improving overall accessibility of any graphical user interface.
基金National Natural Science Foundation of China (49874010)
文摘It has been analyzed the influence of the tectonic ambient shear stress value on response spectrum based on the previous theory. Based on the prediction equation BJF94 presented by the famous American researchers, CLB20, a new prediction formula is proposed by us, where it is introduced the influence of tectonic ambient shear stress value on response spectrum. BJF94 is the prediction equation, which mainly depends on strong ground motion data from western USA, while the prediction equation SEA99 is based on the strong ground motion data from exten-sional region all over the world. Comparing these two prediction equations in detail, it is found that after BJF94′s prediction value lg(Y) minus 0.16 logarithmic units, the value is very close to SEA99′s one. This case demonstrates that lg(Y) in extensional region is smaller; the differences of prediction equation are mainly owe to the differences of tectonic ambient shear stress value. If the factor of tectonic ambient shear stress value is included into the pre-diction equation, and the magnitude is used seismic moment magnitude to express, which is universal used around the world, and the distance is used the distance of fault project, which commonly used by many people, then re-gional differences of prediction equation will become much less, even vanish, and it can be constructed the uni-versal prediction equation proper to all over the world. The error in the earthquake-resistant design in China will be small if we directly use the results of response spectrum of USA (e.g. BJF94 or SEA99).
文摘基于传统的极化敏感阵列多重信号分类(multiple signal classification,MUSIC)空间谱估计测向算法,提出了结合极化滤波与斜投影算子的极化域-空域二维联合空间谱估计超分辨测向算法。与传统极化MUSIC空间谱估计算法相比,所提算法根据接收到的混叠脉冲信号的时域、极化域特性,进行信号前沿段与叠加段的分段波达方向(direction of arrival,DOA)估计。在估计出前沿段信号极化域与空域参数后,以此对信号叠加段进行极化滤波与斜投影算子处理,更为准确地估计了目标雷达与诱饵的DOA。仿真实验结果表明,该算法可有效抑制诱饵信号的影响,提高目标雷达信号DOA估计的准确度,实现多目标分辨。
