Abstract- ing this paper new factorization techniques for computation of the Operational Space Mass Matrix (A) and its inverse (A-l) are developed. Starting with a new factorization of the inverse of...
Novel Highly Parallel and Systolic Architectures using Quantum Dot-Based Hardware (2008)
Amir Fijany, Benny N. Toomarian, Matthew Spotnitz
In this paper, we present novel parallel architectures based on Quantum-dot Cellular Automata (QCA) hardware. We show that the QCA, by allowing co-planar line crossing, overcomes a major limitation...
Amir Fijany, Mark Milman, David Redding
In this paper massively parallel algorithms and architectures for real-time wavefront control of a dense adaptive optic system (’SXLENE) are presented. We have already shown that the computation of...
Partial Differential Equations on the Intel Touchstone Delta Supercomputer (2008)
Nikzad Toomarian, Amir Fijany, Jacob Barhen, Nikzad Toomarian, Amir Fijany, Jacob Barhen
Evolutionary partial differential actuations are usually solved by discretization in time and space, and by applying a marching in time procedure to data and algorithms potentially parallelized in...
Novel Highly Parallel and Systolic Architectures using Quantum Dot-Based Hardware (2008)
Amir Fijany, Benny N. Toomarian, Matthew Spotnitz
VLSI technology has made possible the integration of massive number of components (processors, memory, etc.) into a single chip. In VLSI design, memory and processing power are relatively cheap and...
Abstract- ing this paper parallel O(Log N) algorithms for dynamic simulation of single closed-chain rigid multibody system as specialized to the case of a robot manipulator in contact with the...
Novel Model-Based Diagnosis Approaches for Advanced IVHM Systems (2008)
Amir Fijany, Farrokh Vatan, Anthony Barrett, Ryan Mackey
Over the past decade, the number of Earth orbiters and deep space probes has grown dramatically and is expected to continue in the future as miniaturization technologies drive spacecraft to become...
New Approaches for Efficient Solution of Hitting Set Problem (2008)
A new method for solving the hitting set problem is proposed. This method is based on the mapping of the problem onto an integer programming optimization problem. This new approach provides an...
New approach for efficient diagnosis of large and complex space systems (2008)
We propose a novel algorithmic approach and present a new algorithm for solving the diagnosis problem. We report the results of the performance of the new algorithm and compare them with the...
Paolo Fiorini, Amir Fijany, Antal Bejczy
In the last forty years, land mines have become one of the most serious threats to civilian populations in several parts of the world. To address this problem, humanitarian de-mining activities are...
Simulation and experiments on (2007)
Jianwei Che, Michael N Gardos, Amir Fijany
friction and wear of diamond: a material for MEMS and NEMS application
Dixit, Sunil, Brown, Steve, Fijany, Amir, Park, Han, Mackey, Ryan, James, Mark, ...
This paper will describe recent advances in ISHM technologies made through collaboration between NASA and industry. In particular, the paper will focus on past, present, and future technology...
New high performance algorithmic solution for diagnosis problem (2006)
In this paper we address the problem of generating the minimal diagnosis from the conflicts. This problem can be formulated as the well-known Hitting Set Problem. Our approach starts by mapping the...
Quantum dots cellular automata: fault tolerant logic gates and wires (2005)
Fijany, Amir, Toomarian, Benny N.
NASA
New approaches for efficient solution of hitting set problem (2005)
A new method for solving the hitting set problem is proposed. This method is based on the mapping of the problem onto an integer programming optimization problem. this new approach provides an...
NASA/TM—2005-213849 Intelligent Elements for the ISHM Testbed and Prototypes (ITP) Project (2005)
William A. Maul, Mark Schwabacher, Michael Watson, Ryan Mackey, Amir Fijany, Luis Trevino, ...
Since its founding, NASA has been dedicated to the advancement of aeronautics and space
In this paper, fast time- and Space -Parallel agorithms for solution of linear parabolic PDEs are developed. It is shown that the seemingly strictly serial iterations of the time-stepping procedure...
In this paper parallel 0(log N) algorithms for dynamic simulation of single closed-chain rigid multibody system as specialized to the case of a robot manipulatoar in contact with the environment are...
Massively Parallel Algorithms for Solution of Schrodinger Equation (2004)
Fijany, Amir, Barhen, Jacob, Toomerian, Nikzad
In this paper massively parallel algorithms for solution of Schrodinger equation are developed. Our results clearly indicate that the Crank-Nicolson method, in addition to its excellent numerical...
This paper presents the development and analysis of a wavefront control strategy for a dense adaptive optics system with segmented primary mirror.
Toomarian, Nikzad, Fijany, Amir, Barhen, Jacob
This paper presents the implementation of a new class of massively parallel algorithms for solving certain time-dependent partial differential equations (PDEs) on massively parallel-supercomputers.
A Class of Unconditionally Stable Explicit Methods for Solution of Acoustic Wave Equations (2004)
Fijany, Amir, Aminzadeh, Fred, Stefani, Joseph P, Messina, Paul C.
In this paper, we we analyze a number of tie-breaking staragegies for GSAT and evaluate the strategies for GSAT and evaluate the strategies empirically usuing randomly generated 3-SAT instances from...
Fijany, Amir, Djouani, Karim, Fried, George, Pontnau, Jean
In this paper a new factorization technique for computation of inverse of mass matrix, and the operational space mass matrix, as arising in implementation of the operational space control scheme, is...
Jaramillo-Botero, Andres, Goddard, William A III, Fijany, Amir
The advances in theory and computing technology over the last decade have led to enormous progress in applying atomistic molecular dynamics (MD) methods to the characterization, prediction, and...
Çağin, Tahir, Che, Jianwei, Gardos, Michael N., Fijany, Amir
To date most of the microelectromechanical system (MEMS) devices have been based on silicon. This is due to the technological know-how accumulated on the manipulation, machining and manufacturing of...
Tahir Çagin, Material For Mems, Jianwei Che, Michael N. Gardos, Amir Fijany
. To date most of the microelectromechanical system (MEMS) devices have been based on silicon. This is due to the technological know-how accumulated on the manipulation, machining and manufacturing...
Quantum Wavelet Transforms: Fast Algorithms and Complete Circuits (1998)
Fijany, Amir, Williams, Colin P.
The quantum Fourier transform (QFT), a quantum analog of the classical Fourier transform, has been shown to be a powerful tool in developing quantum algorithms. However, in classical computing there...
This paper presents the development and analysis of a wavcfront control strategy for a dense adaptive optics systcm with segmented primary mirror. Systems of this type represent a substantial...
Amir Fijany, Michael A. Jensent, Yahya Rahmat-samiit, Jacob Barhen
In this paper, we present a novel strategy for incorporating massive parallelism into the solution of Maxwell’s equations using finite-difference time-domain methods. In a departure from previous...
Fast Time and Space Parallel Algorithms for Solution (1974)
Of Parabolic Partial, Amir Fijany
this paper, fast time- and space-parallel algorithms for solution