We study the problem of approximately transforming a sample from a source statistical model to a sample from a target statistical model without knowing the parameters of the source model, and construct several computa...
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Unmanned Aerial Vehicles (UAVs) have been recently leveraged in massive amount of Internet of Things (IoT) applications. However, given the stringent limitations of UAVs, investigating their performance in terms of th...
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Human Activity Recognition (HAR) is a crucial area of research in the fields of health and human-machine interaction. Smartphones have emerged as a popular choice for HAR due to their ubiquitous nature in daily life. ...
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As more renewables join and contribute to the power system, Inverter Based Resources (IBR) are adding challenges to the protective system. The relatively small power output of these generators and the corresponding fa...
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ISBN:
(纸本)9781837241521
As more renewables join and contribute to the power system, Inverter Based Resources (IBR) are adding challenges to the protective system. The relatively small power output of these generators and the corresponding fault currents they produce present problems for traditional protective relaying schemes, causing relay mal-operation, and issues with protective system coordination and operation. The majority of distribution protection schemes are based on over-current protection, where when a current threshold is exceeded, a trip signal is generated by the relay indicating a fault. The addition of distributed generation to the power system complicates protective relaying in a number of ways: the magnitude of the fault current will be altered based upon the location of the fault relative to the IBR, and the response of the IBR sources to a fault will be much different than the traditional synchronous generator. The biggest change that the introduction of an IBR to an existing system produces is that the currents experienced during a fault by the protection system will not be the same as the system was originally designed for, since the IBR sources have a much lower fault current with IBR fault currents typically in the 1.2 - 1.5 p.u. range. The relatively low fault current of IBR sources present a difficulty in differentiating faults from increased loads. Additionally negative sequence relays may fail in the presence of IBR’s due to the negligible negative sequence current produced by the IBR during a *** sources may also alter the flow of fault current from what the protective system was designed around. This paper presents a novel method to allow the sub-cycle detection, and determination of the relative location, of asymmetrical ground faults (single line to ground and double line to ground) in systems containing IBR sources through the use of phasor analysis of the zero sequence current. Least Error Squares Estimation is then applied to the fault currents to g
The open source Verilog-To-Routing (VTR) tool flow can produce legal placement solutions for arbitrarily complex FPGA architectures and is thus widely used for novel device development as well as CAD tool research. VT...
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The autonomous driving industry is expected to grow by over 20 times in the coming decade and, thus, motivate researchers to delve into it. The primary focus of their research is to ensure safety, comfort, and efficie...
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The autonomous driving industry is expected to grow by over 20 times in the coming decade and, thus, motivate researchers to delve into it. The primary focus of their research is to ensure safety, comfort, and efficiency. An autonomous vehicle has several modules responsible for one or more of the aforementioned items. Among these modules, the trajectory planner plays a pivotal role in the safety of the vehicle and the comfort of its passengers. The module is also responsible for respecting kinematic constraints and any applicable road constraints. In this paper, a novel online spatial-temporal graph trajectory planner is introduced to generate safe and comfortable trajectories. First, a spatial-temporal graph is constructed using the autonomous vehicle, its surrounding vehicles, and virtual nodes along the road with respect to the vehicle itself. Next, the graph is forwarded into a sequential network to obtain the desired states. To support the planner, a simple behavioral layer is also presented that determines kinematic constraints for the planner. Furthermore, a novel potential function is also proposed to train the network. Finally, the proposed planner is tested on three different complex driving tasks, and the performance is compared with two frequently used methods. The results show that the proposed planner generates safe and feasible trajectories while achieving similar or longer distances in the forward direction and comparable comfort ride. IEEE
Soft Errors and Hardware Trojans (HT) constitute a major reliability concern, and their combination can pose an even more challenging threat to circuit security. The main idea of this paper is to identify the optimal ...
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Distributed denial-of-service (DDoS) attacks can significantly impair the network’s availability, and recent statistics show that 30% of cyber-attacks are based on network intrusion, with 27% of incidents occurring i...
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Metaheuristic algorithms are essential for solving complex optimization problems in different fields. However, the difficulty in comparing and rating these algorithms remains due to the wide range of performance metri...
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Timing analysis is a crucial verification method employed throughout the entire design cycle of integrated circuits. However, the increasing complexity of modern designs, driven by aggressive technology scaling, neces...
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