In this paper,the small-signal modeling of the Indium Phosphide High Electron Mobility Transistor(InP HEMT)based on the Transformer neural network model is investigated.The AC S-parameters of the HEMT device are train...In this paper,the small-signal modeling of the Indium Phosphide High Electron Mobility Transistor(InP HEMT)based on the Transformer neural network model is investigated.The AC S-parameters of the HEMT device are trained and validated using the Transformer model.In the proposed model,the eight-layer transformer encoders are connected in series and the encoder layer of each Transformer consists of the multi-head attention layer and the feed-forward neural network layer.The experimental results show that the measured and modeled S-parameters of the HEMT device match well in the frequency range of 0.5-40 GHz,with the errors versus frequency less than 1%.Compared with other models,good accuracy can be achieved to verify the effectiveness of the proposed model.展开更多
随着传感、信号处理和通信技术的快速发展,关于网络控制系统(Networked control systems,NCSs)的研究引起了极大的关注.本文拟回顾关于网络控制系统的最新研究进展.为揭示反馈通信网络对控制系统的影响,主要讨论了为满足不同控制目的所...随着传感、信号处理和通信技术的快速发展,关于网络控制系统(Networked control systems,NCSs)的研究引起了极大的关注.本文拟回顾关于网络控制系统的最新研究进展.为揭示反馈通信网络对控制系统的影响,主要讨论了为满足不同控制目的所需的各种网络条件,例如:在时变信道的环境下,保证线性系统可镇定性所需的最低编码率;在间断观测的环境下,保证卡尔曼滤波器稳定性的临界丢包条件;在时不变连接图的环境下,达到线性多自主体系统趋同性所需的网络拓扑结构;在通信资源有限的情况下,基于事件驱动的采样与控制方法等.展开更多
成功制备出高品质的三元Ag In S2量子点。通过配体交换法将油溶性Ag In S2量子点转为水溶性量子点,通过d BSA修饰水溶性量子点形成配位体壳,使量子点具有更好的稳定性(4周)。从透射电子显微镜(TEM)观察到d BSA修饰后的量子点的粒径增加...成功制备出高品质的三元Ag In S2量子点。通过配体交换法将油溶性Ag In S2量子点转为水溶性量子点,通过d BSA修饰水溶性量子点形成配位体壳,使量子点具有更好的稳定性(4周)。从透射电子显微镜(TEM)观察到d BSA修饰后的量子点的粒径增加,分散性较好,并且在可见光区域有明显的光致发光。用叶酸对d BSA-MPA量子点进行修饰,并通过傅立叶变换红外光谱进行了验证。将得到的FA-d BSA-MPA纳米复合材料应用于能与叶酸受体特异性结合的乳腺癌细胞中,并在荧光倒置显微镜中检测到量子点成功对乳腺癌细胞进行了标记。与d BSA-MPA量子点相比,表面被叶酸修饰后的量子点与癌细胞的结合效率显著提高。展开更多
基金Supported by the National Natural Science Foundation of China(62201293,62034003)the Open-Foundation of State Key Laboratory of Millimeter-Waves(K202313)the Jiangsu Province Youth Science and Technology Talent Support Project(JSTJ-2024-040)。
文摘In this paper,the small-signal modeling of the Indium Phosphide High Electron Mobility Transistor(InP HEMT)based on the Transformer neural network model is investigated.The AC S-parameters of the HEMT device are trained and validated using the Transformer model.In the proposed model,the eight-layer transformer encoders are connected in series and the encoder layer of each Transformer consists of the multi-head attention layer and the feed-forward neural network layer.The experimental results show that the measured and modeled S-parameters of the HEMT device match well in the frequency range of 0.5-40 GHz,with the errors versus frequency less than 1%.Compared with other models,good accuracy can be achieved to verify the effectiveness of the proposed model.
文摘随着传感、信号处理和通信技术的快速发展,关于网络控制系统(Networked control systems,NCSs)的研究引起了极大的关注.本文拟回顾关于网络控制系统的最新研究进展.为揭示反馈通信网络对控制系统的影响,主要讨论了为满足不同控制目的所需的各种网络条件,例如:在时变信道的环境下,保证线性系统可镇定性所需的最低编码率;在间断观测的环境下,保证卡尔曼滤波器稳定性的临界丢包条件;在时不变连接图的环境下,达到线性多自主体系统趋同性所需的网络拓扑结构;在通信资源有限的情况下,基于事件驱动的采样与控制方法等.
文摘成功制备出高品质的三元Ag In S2量子点。通过配体交换法将油溶性Ag In S2量子点转为水溶性量子点,通过d BSA修饰水溶性量子点形成配位体壳,使量子点具有更好的稳定性(4周)。从透射电子显微镜(TEM)观察到d BSA修饰后的量子点的粒径增加,分散性较好,并且在可见光区域有明显的光致发光。用叶酸对d BSA-MPA量子点进行修饰,并通过傅立叶变换红外光谱进行了验证。将得到的FA-d BSA-MPA纳米复合材料应用于能与叶酸受体特异性结合的乳腺癌细胞中,并在荧光倒置显微镜中检测到量子点成功对乳腺癌细胞进行了标记。与d BSA-MPA量子点相比,表面被叶酸修饰后的量子点与癌细胞的结合效率显著提高。
