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Because of their misuse and poor management, antibiotics pose a significant threat to the ecological environment and human health. The development of highly sensitive and effective sensors to detect such environmental contaminants is a crucial and challenging task. As a new class of desirable biocompatible materials, biological metal‐organic frameworks are considered as a viable platform for sensing...
In a cognitive radio network (CRN), when the secondary users (SUs) are battery-powered devices, the concept of energy-efficient design is very important. In this paper, we propose an energy utility function by formulating the achievable data rate of a cooperative CRN in terms of the energy consumption by the CRN. The maximization of the energy utility function is obtained by jointly designing the...
In this paper, we consider a joint optimization of sensing parameter and power allocation for an energy-efficient cognitive radio network (CRN) in which the primary user (PU) is protected. The optimization problem to maximize the energy efficiency of CRN is formulated as a function of two variables, which are sensing time and transmit power, subject to the average interference power to the PU and...
When events happened in a cluster based static wireless sensor network (WSN), those nodes around cluster heads (CHs) have extremely fast power consumption rate since they have to forward all event data to the CHs. This is so called "Hot Spot" problem. Many attempts have been made to solve this problem. CH hybrid mobile strategy (CH HMS) is one of the most effective solutions. CH HMS assumes...
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