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Deadline constrained packet scheduling and transmission are important in real-time multimedia applications. This is because packets missing their deadlines would become useless and are frequently dropped, which seriously degrade the quality of service (QoS). As the utilization of Internet of Things has become mature, multimedia data transmission is a key component to promote the QoS of citizens. To...
To further extend the scaling trend of traditional CMOS technology, many hybrid architectures integrating emerging device technologies have been proposed recently. Among them, memristor based cross-point memory (MBCPM) demonstrates great potential in data storage and computation. However, accessing a cross-point memory inevitably induces currents flowing through those unselected cells, called as sneak...
As an important form of comprehensive utilization of urban underground space, the urban underground business district effectively relieves the land shortage bottleneck in the process of urbanization meeting the requirements of land intensive use. However due to the characteristics of the safety management, major safety accidents have been occurring one after another recently, so it has been a problem...
Coverage area and network lifetime are major problems in wireless multimedia sensor networks (WMSNs). In order to optimize the network coverage, we propose a coverage-enhancing algorithm based on overlap-sense ratio. By adjusting the sensing direction of the nodes, the coverage area is increased with the reduction of computational complexity. In addition, a modified strategy is presented to shut off...
Cognitive radio (CR) is a novel technology that promises to improve spectrum efficiency by allowing secondary users (SUs) to dynamically access spectrum without using by primary users. With offering great flexibility and software reconfigurability, unsecured CR can be easily manipulated to attack legacy users on both control and data channels. In this paper, we explore anti-jamming schemes based on...
This paper addresses the problem of estimating the odor path which is most likely taken by the odor patch detected by the concentration sensor on a mobile robot moving in an indoor dynamic airflow environment. The odor path estimation is useful for plume tracing and odor source declaration. A novel algorithm for odor path likelihood mapping in the dynamic airflow environment is proposed. The algorithm...
Robot-assisted urban search and rescue is an emerging topic in the field of robotics and it calls for new approaches of control. The focus of this work is the application of fuzzy logic in the grasping of objects with unknown characteristics such as rigidity and surface texture. In the task of disaster response, a rescue robot will encounter both living and non-living objects in the field. Then, the...
The future of robotics is not limited to factories and homes, and is extending to robot-assisted urban search and rescue. This paper proposes a new application of neural networks in this emerging field of research. Specifically, a neural network with feedforward architecture using the backpropagation learning algorithm is implemented in order to determine the positioning of a robotic gripper that...
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