Now showing items 923-942 of 1050

  • Study of the Equivalent Electron Drift Field Characteristics in LiNb0<sub>3</sub> by Phase Holography 

    Kim, Dae M.; Shah, Rajiv R.; Rabson, Thomas A.; Tittel, Frank K. (1976-06-20)
    An analysis of the diffraction efficiency of photorefractive holograms in ferroelectric crystals is shown to provide a novel technique for determining the nature and magnitude of the equivalent electron drift field. For ...
  • Sub-quarter micron contact hole fabrication using annular illumination 

    Erdelyi, Miklos; Bor, Zsolt; Szabo, Gabor; Cavallaro, Joseph R.; Smayling, Michael C.; Tittel, Frank K.; Wilson, William L. (1996-03-01)
    Details of an experimental demonstration of a contact hole imaging system are reported in which the depth of focus is increased by a factor of about 3.5 using annular illumination. Due to spatial filtering and nonlinearity ...
  • Submicron Optical Lithography Based on a New Interferometric Phase Shifting Technique 

    Kido, Motoi; Szabo, Gabor; Cavallaro, Joseph R.; Wilson, William L.; Smayling, Michael C.; Tittel, Frank K. (1995-08-01)
    This paper reports the computer simulation and experimental demonstration of a new phase shifting technique based on interferometry that is especially suited for deep ultraviolet (UV) microlithography. Significant resolution ...
  • Submicron Optical Lithography Based on Interferometric Phase Shifting 

    Cavallaro, Joseph R.; Tittel, Frank K.; Wilson, William L. Jr. (1995-01-01)
    One of the most critical processing steps in the fabrication of integrated circuits is microlithography. The design of high density DRAMs requires the accurate patterning of submicron structures. The manufacturability of ...
  • Subspace-based channel estimation for code division multiple access communication systems 

    Bensley, Stephen E; Aazhang, Behnaam (1996-08-20)
    We consider the estimation of channel parameters for code-division multiple access (CDMA) communication systems operating over channels with either single or multiple propagation paths. The multiuser channel estimation ...
  • Subspace-based Tracking of Multipath Channel Parameters for CDMA Systems 

    Sengupta, Chaitali; Cavallaro, Joseph R.; Aazhang, Behnaam (1998-09-20)
    In this paper, we evaluate several issues in the application of subspace based methods to tracking channel parameters in Code Division Multiple Access (CDMA) communication systems, in the presence of multipath fading. We ...
  • Super-Resolution mbPAINT for Optical Localization of Single-Stranded DNA 

    Chen, Jixin; Bremauntz, Alberto; Kisley, Lydia; Shuang, Bo; Landes, Christy F. (2013)
    We demonstrate the application of superlocalization microscopy to identify sequence-specific portions of single-stranded DNA (ssDNA) with sequence resolution of 50 nucleotides, corresponding to a spatial resolution of 30 ...
  • Surflets: A Sparse Representation for Multidimensional Functions Containing Smooth Discontinuities 

    Chandrasekaran, Venkat; Wakin, Michael; Baron, Dror; Baraniuk, Richard G. (2004-07-01)
    Discontinuities in data often provide vital information, and representing these discontinuities sparsely is an important goal for approximation and compression algorithms. Little work has been done on efficient representations ...
  • The Surprising in Vivo Instability of Near-IR-Absorbing Hollow Au-Ag Nanoshells 

    Goodman, Amanda M.; Cao, Yang; Urban, Cordula; Neumann, Oara; Ayala-Orozco, Ciceron; Knight, Mark W.; Joshi, Amit; Nordlander, Peter; Halas, Naomi J. (2014)
    Photothermal ablation based on resonant illumination of near-infrared-absorbing noble metal nanoparticles that have accumulated in tumors is a highly promising cancer therapy, currently in multiple clinical trials. A crucial ...
  • A Survey of NASA and Military Standards on Fault Tolerance and Reliability Applied to Robotics 

    Cavallaro, Joseph R.; Walker, Ian D. (1994-03-01)
    There is currently increasing interest and activity in the area of reliability and fault tolerance for robotics. This paper discusses the application of Standards in robot reliability, and surveys the literature of relevant ...
  • Symmetrizing the Kullback-Leibler Distance 

    Johnson, Don; Sinanovic, Sinan (2001-03-20)
    We define a new distance measure - the resistor-average distance - between two probability distributions that is closely related to the Kullback-Leibler distance. While the Kullback-Leibler distance is asymmetric in the ...
  • Synthesis of Linear Multivariable Regulators 

    Cheng, Lin-Fu; Pearson, J.B. (1980-02-01)
    This paper generalizes the results obtained by the authors in [1] and presents new results on the construction of proper controllers for linear multivariable regulators. These results appear to lead to efficient computational ...
  • A Systolic VLSI Architecture for Complex SVD 

    Hemkumar, Nariankadu D.; Cavallaro, Joseph R. (1992-05-20)
    A systolic algorithm for the SVD of arbitrary complex matrices, based on the cyclic Jacobi method with "parallel ordering" is presented. A novel two-step, two-sided unitary transformation scheme, tailored to the use of ...
  • Tagged Architecture and the Semantics Programming Languages: Extensible Types 

    Feustel, Edward A. (1975-11-20)
    This research note suggests that before we design hardware or software for the task of problem solving, we re-evaluate the task of problem solving in terms of the linguistic constituents which will be required and the ...
  • Tagged Architectures and Protection: Message Systems 

    Feustel, Edward A. (1975-10-20)
    Recent work in extensible programming languages and operating systems by Redell, Lampson, Hewitt, and others coupled with developments in distributed computer systems motivates a study in models of the implementation of ...
  • TAP Channel Measurement: Fundamentals, Goals, and Plans 

    Steger, Christopher (2004-05-01)
    Before we can realize the potential of the TAP (Transit Access Point) project, we must first understand the channel in which we will operate. Specifically, very little information exists on the characteristics of elevated ...
  • Task Partitioning Wireless Base-station Receiver Algorithms on Multiple DSPs and FPGAs 

    Rajagopal, Sridhar; Jones, Bryan Allen; Cavallaro, Joseph R. (2000-10-20)
    This paper presents a multiprocessor solution to meet real-time requirements of implementing advanced algorithms for multiuser channel estimation and detection for third and fourth generation wireless base-station receivers. ...
  • TCP-Africa: An Adaptive and Fair Rapid Increase Rule for Scalable TCP 

    King, Ryan; Baraniuk, Richard G.; Riedi, Rudolf H. (2005-03-01)
    High capacity data transfers over the Internet routinely fail to meet end-to-end performance expectations. The default transport control protocol for best effort data traffic is currently TCP, which does not scale well to ...
  • TCP/IP traffic dynamics and network performance: A lesson in workload modeling, flow control and trace-driven simulations 

    Joo, Youngmi; Ribeiro, Vinay Joseph; Feldmann, Anja; Gilbert, Anna; Willinger, Walter (2001-04-20)
    The main objective of this paper is to demonstrate in the context of a simple TCP/IP-based network that depending on the underlying assumptions about the inherent nature of the dynamics of network traffic, very different ...
  • TEMPLAR: A Wavelet-Based Framework for Pattern Learning and Analysis 

    Scott, Clayton; Nowak, Robert David (2001-04-20)
    Despite the success of wavelet decompositions in other areas of statistical signal and image processing, current wavelet-based image models are inadequate for modeling patterns in images, due to the presence of unknown ...