209 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Universidade Federal de PernambucoBR21 papers
- Universidade Federal de Santa MariaBR16 papers
- University of Maryland, College ParkUS9 papers
- University of CalgaryCA8 papers
- University of California San DiegoUS7 papers
- Brookhaven National LaboratoryUS6 papers
- Kent State UniversityUS6 papers
- Laboratoire d'Informatique en Images et Systèmes d'InformationFR6 papers
- University of MinnesotaUS6 papers
- Institut National des Sciences Appliquées de LyonFR5 papers
- Pennsylvania State UniversityUS5 papers
- Russian Academy of SciencesRU5 papers
20 papers · 1 filter
Can photonic crystals be homogenized in higher bands?
Vadim A. Markel, Igor Tsukerman
We consider conditions under which photonic crystals (PCs) can be homogenized in the higher photonic bands and, in particular, near the -point. By homogenization we mean introdu…
Energy-Efficient Power Allocation in Cognitive Radio Systems with Imperfect Spectrum Sensing
Gozde Ozcan, M. Cenk Gursoy, Nghi Tran +1
This paper studies energy-efficient power allocation schemes for secondary users in sensing-based spectrum sharing cognitive radio systems. It is assumed that secondary users first…
Accurate Force Field Parameters and pH Resolved Surface Models for Hydroxyapatite to Understand Structure, Mechanics, Hydration, and Biological Interfaces
Tzu-Jen, Hendrik Heinz
Mineralization of bone and teeth involves interactions between biomolecules and hydroxyapatite. Associated complex interfaces and processes remain difficult to analyze at the 1 to…
A test of optimal laser impulsion for controlling population within the , polyad of
L. Santos, N. Iacobellis, M. Herman +3
Optimal control theory has been employed to populate separately two dark states of the acetylene polyad , by indirect coupling via the ground state. Relevant level e…
Nonasymptotic Homogenization of Periodic Electromagnetic Structures: Uncertainty Principles
Igor Tsukerman, Vadim A. Markel
We show that artificial magnetism of periodic dielectric or metal/dielectric structures has limitations and is subject to at least two "uncertainty principles". First, the stronger…
ÆtherFlow: Principled Wireless Support in SDN
Muxi Yan, Jasson Casey, Prithviraj Shome +2
Software Defined Networking (SDN) drastically changes the meaning and process of designing, building, testing, and operating networks. The current support for wireless net- working…
Interior gradient estimates for quasilinear elliptic equations
Truyen Nguyen, Tuoc Phan
We study quasilinear elliptic equations of the form in bounded domains in , . The vector field…
Plasma Wave Instabilities in Non-Equilibrium Graphene
Chinta M. Aryal, Ben Yu-Kuang Hu, Antti-Pekka Jauho
We study two-stream instabilities in a non-equilibrium system in which a stream of electrons is injected into doped graphene. As with equivalent non-equilibrium parabolic band syst…
En route to a multi-model scheme for clinker comminution with chemical grinding aids
R. K. Mishra, D. Geissbuhler, H. A. Carmona +7
We present a multi-model simulation approach, targeted at understanding the behavior of comminution and the effect of grinding aids (GAs) in industrial cement mills. On the atomist…
Multi-beam 4 GHz Microwave Apertures Using Current-Mode DFT Approximation on 65 nm CMOS
V. Ariyarathna, S. Kulasekera, A. Madanayake +4
A current-mode CMOS design is proposed for realizing receive mode multi-beams in the analog domain using a novel DFT approximation. High-bandwidth CMOS RF transistors are employed…
Three-dimensional coordinates of individual atoms in materials revealed by electron tomography
Rui Xu, Chien-Chun Chen, Li Wu +11
Crystallography, the primary method for determining the three-dimensional (3D) atomic positions in crystals, has been fundamental to the development of many fields of science. Howe…
Finite groups with an irreducible character of large degree
Nguyen Ngoc Hung, Mark L. Lewis, Amanda A. Schaeffer Fry
Let be a finite group and the degree of a complex irreducible character of , then write where is a nonnegative integer. We prove that …
Local gradient estimates for degenerate elliptic equations
Luan Hoang, Truyen Nguyen, Tuoc Phan
This paper is focused on the local interior -regularity for weak solutions of degenerate elliptic equations of the form $\text{div}[\mathbf{a}(x,u, \nabla u)] +b(x, u…
The Intermediate Neutrino Program
C. Adams, J. R. Alonso, A. M. Ankowski +186
The US neutrino community gathered at the Workshop on the Intermediate Neutrino Program (WINP) at Brookhaven National Laboratory February 4-6, 2015 to explore opportunities in neut…
The character degree ratio and composition factors of a finite group
Mark L. Lewis, Hung Ngoc Nguyen
For a finite non-abelian group let $\rat(G)$ denote the largest ratio of degrees of two nonlinear irreducible characters of . We prove that the number of non-abelian composi…
A Row-parallel 88 2-D DCT Architecture Using Algebraic Integer Based Exact Computation
A. Madanayake, R. J. Cintra, D. Onen +4
An algebraic integer (AI) based time-multiplexed row-parallel architecture and two final-reconstruction step (FRS) algorithms are proposed for the implementation of bivariate AI-en…
A Discrete Tchebichef Transform Approximation for Image and Video Coding
P. A. M. Oliveira, R. J. Cintra, F. M. Bayer +2
In this paper, we introduce a low-complexity approximation for the discrete Tchebichef transform (DTT). The proposed forward and inverse transforms are multiplication-free and requ…
Improved 8-point Approximate DCT for Image and Video Compression Requiring Only 14 Additions
U. S. Potluri, A. Madanayake, R. J. Cintra +3
Video processing systems such as HEVC requiring low energy consumption needed for the multimedia market has lead to extensive development in fast algorithms for the efficient appro…
Multi-Beam RF Aperture Using Multiplierless FFT Approximation
D. Suarez, R. J. Cintra, F. M. Bayer +3
Multiple independent radio frequency (RF) beams find applications in communications, radio astronomy, radar, and microwave imaging. An -point FFT applied spatially across an arr…
Facets of the Balanced Minimal Evolution Polytope
Stefan Forcey, Logan Keefe, William Sands
A phylogenetic tree is a way to organize a finite set of species, individuals or other sources of related data. The species for which we have existing DNA data make up the set of l…