Now showing items 1212-1231 of 1854

    • OpenMP on networks of workstations 

      Lu, Honghui (2001)
      The OpenMP Application Programming Interface (API) is an emerging standard for parallel programming on shared memory architectures. Networks of workstations (NOWs) are attractive parallel programming platforms because of ...
    • Opitmal Phase Kernels for Time-Frequency Analysis 

      Wisur-Olsen, Fridtjof; Baraniuk, Richard G. (1996-05-01)
      We consider the design of kernels for time-frequency distributions through the phase, rather than amplitude, response. While phase kernels do not attenuate troublesome cross-components, they can translate them in the ...
    • Optical and Plasmonic Properties of Metallic Tip /Surface Junctions 

      Ali, Tamer Ashour (2011)
      Reducing symmetry of plasmonic nanostructures allows more in-depth engineering for plasmonic systems to support a range of optical phenomena prohibited by traditional symmetric systems. Symmetry reduction allows for nanoscale ...
    • Optical characterization of single plasmonic nanoparticles 

      Olson, Jana; Dominguez-Medina, Sergio; Hoggard, Anneli; Wang, Lin-Yung; Chang, Wei-Shun; Link, Stephan (2014)
      This tutorial review surveys the optical properties of plasmonic nanoparticles studied by various single particle spectroscopy techniques. The surface plasmon resonance of metallic nanoparticles depends sensitively on the ...
    • Optical Properties of Strongly Coupled Plasmon-Exciton Hybrid Nanostructures 

      Fofang, Nche Tumasang (2012)
      Strongly coupled plasmon-exciton hybrid nanostructures are fabricated and their optical properties are studied. The plasmonic and excitonic systems are gold nanoshells and J-aggregates, respectively. Gold nanoshells are ...
    • Optical spectroscopy and imaging systems for gynecological cancers: from Ultraviolet-C (UVC) to the Mid-infrared 

      Appiah, Benjamin (2011)
      Optical spectroscopy and imaging has proving to be of diagnostic relevance in many organ sites. We use fluorescence and FTIR spectroscopy to study gynecological organ sites and develop classification algorithms for cancer ...
    • Optical systems for point-of-care diagnostic instrumentation: analysis of imaging performance and cost 

      Pierce, Mark C.; Weigum, Shannon E.; Jaslove, Jacob M.; Richards-Kortum, Rebecca; Tkaczyk, Tomasz S. (2014)
      One of the key elements in point-of-care (POC) diagnostic test instrumentation is the optical system required for signal detection and / or imaging. Many tests which use fluorescence, absorbance, or colorimetric optical ...
    • Optically detected terahertz resonance spectroscopy of semiconductor nanostructures 

      Srivastava, Rahul (2005)
      In this dissertation work we have developed an ultracompact optically-detected terahertz resonance (ODTR) spectroscopy system, using quantum cascade lasers (QCLs). This system can be used for investigating various terahertz ...
    • OPTIMAL APPROXIMATION ALGORITHMS FOR DIGITAL FILTER DESIGN 

      LIANG, JUNN-KUEN (1983)
      Several new algorithms are presented for the optimal approximation and design of various classes of digital filters. An iterative algorithm is developed for the efficient design of unconstrained and constrained infinite ...
    • OPTIMAL ARRAYS FOR NARROWBAND BEAMFORMING 

      DE GRAAF, STUART RANDALL (1984)
      We develop equations describing the capability of arbitrary three-dimensional arrays to resolve and detect two narrowband sources using conventional (CONV) beamforming, minimum energy (ME) adaptive beamforming, and linear ...
    • Optimal borehole communication using multicarrier modulation 

      Memarzadeh, Mahsa (2007)
      Transmission of down-hole measurements to the surface while the oil well is being drilled (logging while drilling-LWD-telemetry) is the key to the efficient and successful recovery of hydrocarbon resources. The most promising ...
    • Optimal Choice of the Kernel Function for the Parzen Kernel-type Density Estimators 

      Kazakos, D. (1975-04-20)
      Let W<sub>p</sub><sup>(2)</sup> be the Sobolev space of probability density functions f(X) whose first derivative is absolutely continuous and whose second derivative is in L<sub>p</sub>(- &#8734; ,+ &#8734;), for p &#8712; ...
    • Optimal Detection Using Bilinear Time Frequency and Time Scale Representations 

      Sayeed, Akbar M.; Jones, Douglas L. (1995-12-20)
      Bilinear time-frequency representations (TFRs) and time-scale representations (TSRs) are potentially very useful for detecting a nonstationary signal in the presence of nonstationary noise or interference. As quadratic ...
    • Optimal digital communication of analog signals 

      Memarzadeh, Mahsa; Johnson, Don (2005-03-01)
      In this paper, the problem of optimally communicating analog sources using a bandwidth and power limited digital system is considered. We propose and analyze optimal combined source-channel coding schemes that jointly ...
    • OPTIMAL ESTIMATION FOR BANDLIMITED SIGNALS 

      KOLBA, DEAN PAUL (1979)
      The problem of estimation for bandlimited signals is investigated. The desired estimate is based on a finite number of time samples taken from a measurement interval of length T(,M). With no additional information, the ...
    • Optimal Kernels for Nonstationary Spectral Estimation 

      Sayeed, Akbar M.; Jones, Douglas L. (1995-02-20)
      Current theories of a time-varying spectrum of a nonstationary process all involve, either by definition or by difficulties in estimation, an assumption that the signal statistics vary slowly over time. This restrictive ...
    • Optimal Matrix Multiplication on Fault Tolerant VLSI Arrays 

      Varman, Peter J.; Ramakrishnan, I.V. (1989-02)
      A fault-tolerant array for matrix multiplication that explicitly incorporates mechanisms for easy testability and reconfigurability is described. All signals in the array travel only a constant distance (independent of ...
    • Optimal parallel 2-D FIR digital filter with separable terms 

      Venkatachalam, Vidya; Aravena, Jorge.L. (1997-05-01)
      This paper completely solves the optimal Weighted Least Mean Square (WLMS) design problem using sums of separable terms. For any fixed number of separable terms (less than or equal to the rank of the unconstrained solution), ...
    • Optimal Phase Kernels for Time-Frequency Analysis 

      Wisur-Olsen, Fridtjof (1996-05-01)
      We consider the design of kernels for time-frequency distributions through the phase, rather than amplitude, response. While phase kernels do not attenuate troublesome cross-components, they can translate them in the ...