Titlebook: Omnidirectional Slots Antenna; Junping Geng Book 2021 Shanghai Jiao Tong University Press, Shanghai and Springer Nature Singapore Pte Ltd.

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conical frustum. By introducing the PIN diode into the slot, the antenna of the coaxial wire with slot array can radiate the reconfigurable directional beam by switching the states of the PIN diodes. By introdu978-981-15-9091-7978-981-15-9089-4

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Junping Gengross the gun divide. Ultimately, this re-framing may inform policies to reduce gun violence in the United States. Finally, we discuss the broader policy implications of this framing of the gun debate and stress the importance of considering the safety needs of all people, not simply one group or the

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Junping Gengrnment. While much has changed since the eighteenth century, for better and for worse, human nature has not changed. The fundamental principles of our regime, and the understanding of human nature on which those principles are based, can still be grasped today. Once grasped, they can be defended. Su

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Junping Gengross the gun divide. Ultimately, this re-framing may inform policies to reduce gun violence in the United States. Finally, we discuss the broader policy implications of this framing of the gun debate and stress the importance of considering the safety needs of all people, not simply one group or the

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