Now showing items 687-706 of 1736

    • Identification by laser desorption ionization mass spectroscopy of large fullerenes formed during the growth of single-walled carbon nanotubes in the HiPco process 

      Brinson, Bruce E. (2004)
      Iron catalyzed gas-phased disproportionation of carbon monoxide under high pressure is known to produce carbon Single Walled Nano-Tubes (SWNT). Non-tubular carbon by products and iron encapsulated-graphitic shelled ...
    • An Identification Scheme for the Determination of Systemic Arterial Load Parameters 

      Ling, R.Y.S.; Clark, Jr., J.W.; Srinivasan, R.; Cole, J.S.; Pruett, R.C. (1975-04-20)
      An identification scheme is developed for the determination of several parameters of a modified "Windkessel" model of the systemic arterial system for an individual patient undergoing cardiac catheterization. The scheme ...
    • Image Compression using an Efficient Edge Cartoon + Texture Model 

      Wakin, Michael; Romberg, Justin; Choi, Hyeokho; Baraniuk, Richard G. (2002-04-01)
      Wavelet-based image coders optimally represent smooth regions and isolated point singularities. However, wavelet coders are less adept at representing perceptually important edge singularities, and coding performance ...
    • Image compression using multiscale geometric edge models 

      Wakin, Michael Bruce (2002)
      Edges are of particular interest for image compression, as they communicate important information, contribute large amounts of high-frequency energy, and can generally be described with few parameters. Many of today's most ...
    • Image Compression using Multiscale Geometric Edge Models 

      Wakin, Michael (2002-05-20)
      Edges are of particular interest for image compression, as they communicate important information, contribute large amounts of high-frequency energy, and can generally be described with few parameters. Many of today's most ...
    • Image Data Compression 

      Wei, Dong (1995-05-01)
      Wavelet-based multi-resolution representation has become a cutting-edge technology in the area of image data compression. Though the discrete wavelet transform is closely related to the perfect-reconstruction octave-band ...
    • IMAGE DATA COMPRESSION AND RECONSTRUCTION BASED ON FREQUENCY DOMAIN CONSIDERATIONS AND PARTIAL DIFFERENTIAL EQUATION MODELS 

      CHEN, TING-CHUNG CHARLES (1981)
      The image data compression and reconstruction problems are investigated in this dissertation, and new techniques for their solution are presented. Conventional image transform coding techniques are given a spatial domain ...
    • Image data compression using wavelet decomposition 

      Wei, Dong (1995)
      Wavelet-based multi-resolution representation has become a cutting-edge technology in the area of image data compression. Though the discrete wavelet transform is closely related to the perfect-reconstruction octave-band ...
    • Image enhancement by nonlinear wavelet processing 

      Odegard, Jan E. (1994-10-20)
      In this paper we describe how the theory of wavelet thresholding introduced by Donoho and Johnstone can successfully be applied to two distinct problems in image processing where traditional linear filtering techniques are ...
    • Image Restoration Using the EM Algorithm and Wavelet-Based Complexity Regularization 

      Figueiredo, Mario; Nowak, Robert David (2002-05-20)
      This paper introduces an <i>expectation-maximization</i> (EM) algorithm for image restoration (deconvolution) based on a penalized likelihood formulated in the wavelet domain. Regularization is achieved by promoting a ...
    • Image Super-Resolution for Improved Automatic Target Recognition 

      Wagner, Raymond; Waagen, Donald; Cassabaum, Mary (2004-04-01)
      Infrared imagers used to acquire data for automatic target recognition are inherently limited by the physical properties of their components. Fortunately, image super-resolution techniques can be applied to overcome the ...
    • Imagine: Media Processing with Streams 

      Khailany, Brucek; Dally, William J.; Kapasi, Ujval J.; Mattson, Peter; Namkoong, Jinyung; Owens, John D.; Towles, Brian; Chang, Andrew; Rixner, Scott (2001-03-20)
      The Power-efficient Imagine stream processor achieves performance densities comparable to those of special-purpose embedded processors. Executing programs mapped to streams and kernels, a single Imagine processor is expected ...
    • Imaging and Visual Classification by Knowledge-Enhanced Compressive Imaging 

      Li, Yun (2015-09-10)
      Compressive imaging is a technology that uses multiplexed measurements and the sparsity of many natural images to efficiently capture and reconstruct images. The compressive single pixel camera is one embodiment of such ...
    • Imaging molecular adsorption and desorption dynamics on graphene using terahertz emission spectroscopy 

      Sano, Y.; Kawayama, I.; Tabata, M.; Salek, K.A.; Murakami, H.; Wang, M.; Vajtai, R.; Ajayan, P.M.; Kono, J.; Tonouchi, M. (2014-08-13)
      Being an atomically thin material, graphene is known to be extremely susceptible to its environment, including defects and phonons in the substrate on which it is placed as well as gas molecules that surround it. Thus, any ...
    • Imaging Plasmons with Compressive Hyperspectral Microscopy 

      Lu, Liyang (2015-04-23)
      With the ability of revealing the interactions between objects and electromagnetic waves, hyperspectral imaging in optical microscopy is of great importance in the study of various micro/nano-scale physical and chemical ...
    • Imaging with Terahertz Pulses 

      Dorney, Timothy D.; Johnson, Jon L.; Mittleman, Daniel M.; Baraniuk, Richard G. (2000-07-01)
      Recently, a real-time imaging system based on terahertz (THz) time-domain spectroscopy has been developed. This technique offers a range of unique imaging modalities due to the broad bandwidth, sub-picosecond duration, and ...
    • Imaging with THz Pulses 

      Dorney, Timothy D.; Johnson, Jon L.; Mittleman, Daniel M.; Baraniuk, Richard G. (2000-09-01)
      A real-time imaging system based on terahertz (THz) time-domain spectroscopy has been demonstrated. This technique offers a range of unique imaging modalities due to the broad bandwidth, sub-picosecond duration, and ...
    • Impact of Environmental Variables on the Reduction of Nitric Acid by Proxies for Volatile Organic Compounds Emitted by Motor Vehicles 

      Leong, Y. J.; Rutter, A.P.; Wong, H.Y.; Gutierrez, C.V.; Junaid, M.; Scheuer, E.; Gong, L.; Lewicki, R.; Dibb, J.E.; Tittel, F.K.; Griffin, R.J. (2016)
      Recent work has identified nitric acid (HNO3) as a potential precursor of nitrous acid (HONO), which is an important source of oxidants that regulate ozone and particulate pollution. Recent work in our laboratory has ...
    • The Impact of Exploiting Instruction-Level Parallelism on Shared-Memory Multiprocessors 

      Pai, Vijay S.; Ranganathan, Parthasarathy; Abdel-Shafi, Hazim; Adve, Sarita V. (1999-02-20)
      Current microprocessors incorporate techniques to aggressively exploit instruction-level parallelism (ILP). This paper evaluates the impact of such processors on the performance of shared-memory multiprocessors, both without ...
    • Impact of growth temperature on InAs/GaInSb strained layer superlattices for very long wavelength infrared detection 

      Haugan, H. J.; Brown, G. J.; Elhamri, S.; Mitchel, W. C.; Mahalingam, K.; Kim, M.; Noe, G. T.; Ogden, N. E.; Kono, J. (2012-10-23)
      We explore the optimum growth space for a 47.0A ° InAs/21.5A ° Ga0.75In0.25Sb superlattices (SLs) designed for the maximum Auger suppression for a very long wavelength infrared gap. Our growth process produces a consistent ...