Under the assumption that the earth movement tendency is a sphere, the author does research about the earthquakes occurrence between 2001 and 2010 which over 6 scales of magnitude on occurred time (UTC), magnitude, lo...Under the assumption that the earth movement tendency is a sphere, the author does research about the earthquakes occurrence between 2001 and 2010 which over 6 scales of magnitude on occurred time (UTC), magnitude, longitude, latitude and other data, then give out the causal relationship of earthquakes and the co-planarity and symmetry theory of earthquake occurrence. Also, the author does empirical analysis in the paper.展开更多
The article presents a miniaturized monopole antenna dedicated to modern flexible electronic systems.The antenna combines three fundamental properties in a single structure.Firstly,it is characterized by a compact siz...The article presents a miniaturized monopole antenna dedicated to modern flexible electronic systems.The antenna combines three fundamental properties in a single structure.Firstly,it is characterized by a compact size compared to the state-of-the-art literature with an overall size of 18×18×0.254 mm3,secondly,the proposed antenna integrates the reconfigurability function of frequency,produced by means of a Positive-IntrinsicNegative(PIN)diode introduced into the radiating element.Thus,the antenna is able to switch between different frequencies and different modes,making it suitable to meet the ever-changing demands of communication systems.third,the antenna is equipped by the property of flexibility.In fact,a conformability test is performed and has demonstrated the stability of the antenna performance under normal and bending conditions.Finally,in order to demonstrate the potential of the proposed antenna,a comparison between the simulated and measured results is made and turned out to be a strong agreement,making the antenna an excellent candidate for future miniaturized rigid and conformal devices.展开更多
文摘Under the assumption that the earth movement tendency is a sphere, the author does research about the earthquakes occurrence between 2001 and 2010 which over 6 scales of magnitude on occurred time (UTC), magnitude, longitude, latitude and other data, then give out the causal relationship of earthquakes and the co-planarity and symmetry theory of earthquake occurrence. Also, the author does empirical analysis in the paper.
基金This work is supported by Taif University Researchers Supporting Project Number TURSP-2020/34,Taif University,Taif,Saudi Arabia.Also,this work is supported by Antenna and Wireless Propagation Group(https://sites.google.com/view/awpgrp)。
文摘The article presents a miniaturized monopole antenna dedicated to modern flexible electronic systems.The antenna combines three fundamental properties in a single structure.Firstly,it is characterized by a compact size compared to the state-of-the-art literature with an overall size of 18×18×0.254 mm3,secondly,the proposed antenna integrates the reconfigurability function of frequency,produced by means of a Positive-IntrinsicNegative(PIN)diode introduced into the radiating element.Thus,the antenna is able to switch between different frequencies and different modes,making it suitable to meet the ever-changing demands of communication systems.third,the antenna is equipped by the property of flexibility.In fact,a conformability test is performed and has demonstrated the stability of the antenna performance under normal and bending conditions.Finally,in order to demonstrate the potential of the proposed antenna,a comparison between the simulated and measured results is made and turned out to be a strong agreement,making the antenna an excellent candidate for future miniaturized rigid and conformal devices.
