against the range-dependent accuracy of the tracking radar measurements including range, elevation and bearing angles, a new hybrid adaptive kalman filter is proposed to enhance the performance of the radar aided strapdown inertial navigation system (ins/radar). this filter involves the concept of residual-based adaptive estimation and adaptive fading kalman filter and tunes dynamically the fil...

in this paper, an optimal control of quadratic performance index with nonlinear constrained is presented. the sine-cosine wavelet operational matrix of integration and product matrix are introduced and applied to reduce nonlinear differential equations to the nonlinear algebraic equations. then, the newton-raphson method is used for solving these sets of algebraic equations. to present ability ...

Advances in computer technology have dramatically increased raytrace speeds in optical engineering software. Increases in raytrace speed have, in turn, led to new methods for evaluating optical system performance. Designers traditionally evaluate imaging system performance with spot diagrams, MTF plots, ray aberration plots, and distortion plots. These tools are invaluable for two reasons: 1) t...

Contract Number 65A0010. Any opinions expressed herein do not necessarily reflect those of the California Department of Transportation. The author acknowledges the many helpful comments and suggestions received during the course of the research from personnel in the Caltrans Aeronautics Program and New Technology and Research Program.

There is increasing interest in comparing Canada’s health system internationally. Enhancing accountability and promoting benchmarking and mutual learning are among the reasons for looking at how health system performance varies across countries. Although there are methodological challenges in terms of having consistent and comparable data, there is value in understanding how Canadian results co...

This paper covers the design and performance of a radically new valve system now being used in semi-hermetic compressors. The discharge valve, trademarked the "Discus Valve," is made from a high temperature polymeric material. This valve, together with a unique laminated steel valve plate and a ring-type suction valve, provides large flow areas, low clearance volumes, and high efficiency. The d...

this paper presents numerical calculations for podded propulsion system using vortex theory and potential panel method. the method discretizes the surface boundary of the body (propeller +pod+strut) and obtained the vortex and propeller surface and potential on strut and pod. a model propeller and strut are considered for these calculations and the results of pressure distribution, flow field a...

The explosive growth of the Internet in recent years has created a heretofore unprecedented demand for system performance. In many cases, system administrators have been left scrambling, trying to understand the performance issues raised by the loads and new technologies they are facing. This paper suggests methods for analyzing system performance potential, prioritizing the search for bottlene...