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Expected Likelihood based quality assessment of DOA estimates relies on the underlying signal and noise distributions having likelihood ratio probability density functions for the (unknown) true parameters that are independent of the actual true DOAs. This has been shown, both analytically and practically for a wide range of real and complex Gaussian solutions. Recent studies [1, 2] focusing on compound...
Due to the inherent limitations of the sensor nodes (SNs) and the distributed nature of information in wireless sensor networks (WSNs), energy efficient routing protocols have received significant research attention. Hierarchical routing based on clustering have been proven to be an effective method for energy-efficiency. Moreover, the presence of heterogeneous nodes with varied initial energies can...
We explore an approach to incorporating task and motor thermal dynamics in the selection of actuators for legged robots, using both analytical and simulation methods. We develop a motor model with a thermal component and apply it to a vertical climbing task; in the process, we optimally choose gear ratio and therefore eliminate it as a design parameter. This approach permits an analytical proof that...
This paper presents a mixed-potential integral-equation formulation for analyzing 1-D periodic leaky-wave antennas in layered media. The structures are periodic in one dimension and finite in the other two dimensions. The unit cell consists of an arbitrary-shaped metallic/dielectric structure. The formulation has been implemented in the EIGER™ code in order to obtain the real and complex propagation...
Finding the optimal layout of Automated Material Handling Systems (AMHS) is critical for the design of next generation semiconductor wafer fabs. This paper proposes a greedy heuristic to determine the configuration of a conveyor-based AMHS featuring turntables and crossovers. Using a conveyor-based analytical model, the heuristic identifies the crossover that provides the greater benefit in terms...
This paper presents high performance computing results from applications of the CRAFT CFD® software to complex weapons bay configurations. Several flow control concepts have been developed based on past experience with smaller length-to-depth ratio (L/D) cavities with the intended application being a more complex and longer weapons bay. The goal in this paper is to document work done to build confidence...
A proposed alternative model and an algorithm are presented which will improve the transient stability relay protection schemes. Presently, to replace the SEL-68 stability relay for the SCE Big Creek corridor, relay validation and method review must be performed, but no existing method is capable of handling pre-fault variations of load, power flow direction, and network topology as well as fault...
A dual classification of variable delays 1) by their explicit dependence on time or through a state variable and 2) through their origins as ``pipe'' or ``nonpipe'' problems is presented. Techniques of simulation through standard analog components and, more particularly, transport devices are analyzed and further classification made of the latter to distinguish those suitable for state-variable delay...
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