Now showing items 844-863 of 2384

    • Gold Nanoparticle Aggregation for Quantification of Oligonucleotides: Optimization and Increased Dynamic Range 

      Cordray, Michael S.; Amdahl, Matthew; Richards-Kortum, Rebecca R. (2012)
      A variety of assays have been proposed to detect small quantities of nucleic acids at the point-of-care. One approach relies on target-induced aggregation of gold nanoparticles functionalized with oligonucleotide sequences ...
    • Gold Nanoparticle Delivery of Modified CpG Stimulates Macrophages and Inhibits Tumor Growth for Enhanced Immunotherapy 

      Lin, Adam Yuh; Almeida, Joao Paulo Mattos; Bear, Adham; Liu, Nathan; Luo, Laureen (2013)
      Gold nanoparticle accumulation in immune cells has commonly been viewed as a side effect for cancer therapeutic delivery; however, this phenomenon can be utilized for developing gold nanoparticle mediated immunotherapy. ...
    • Gold nanoshells: Optical properties and femtosecond electron dynamics 

      Averitt, Richard Douglas (1998)
      The chemistry, optical properties, and femtosecond electron dynamics of gold nanoshells are described. The gold nanoshells consist of Au-coated Au$\sb2$S nanoparticles prepared via aqueous phase chemistry using HAuCl$\sb4$ ...
    • Golden-Eye: A server-side location-sensing system for wireless LANs 

      Tao, Ping (2004)
      Determining the location of a wireless client is a key problem for location-aware systems and for security applications. Many recent studies have used Bayesian methods to determine location from wireless LAN signals, but ...
    • GPU Accelerated Reconfigurable Detector and Precoder for Massive MIMO SDR Systems 

      Li, Kaipeng (2015-12-02)
      We present a reconfigurable GPU-based unified detector and precoder for massive MIMO software-defined radio systems. To enable high throughput, we implement the linear minimum mean square error detector/precoder and further ...
    • GPU Accelerated Scalable Parallel Decoding of LDPC Codes 

      Wang, Guohui; Wu, Michael; Sun, Yang (2011-11-01)
      This paper proposes a flexible low-density parity-check (LDPC) decoder which leverages graphic processor units (GPU) to provide high decoding throughput. LDPC codes are widely adopted by the new emerging standards for ...
    • A GPU Implementation of a Real-Time MIMO Detector 

      Wu, Michael; Gupta, Siddharth; Sun, Yang; Cavallaro, Joseph R. (2009-10-01)
      Multiple-input multiple-output (MIMO) is an existing technique that can significantly increase throughput of the system by employing multiple antennas at the transmitter and the receiver. Realizing maximum benefit from ...
    • GPU-based Acceleration of Symbol Timng Recovery 

      Kim, Scott C.; Plishker, William L.; Bhattacharyya, Shurva S.; Cavallaro, Joseph R. (2012-12-20)
      This paper presents a novel implementation of graphics processing unit (GPU) based symbol timing recovery using polyphase interpolators to detect symbol timing error. Symbol timing recovery is a compute intensive procedure ...
    • A GPU-based preconditioned Newton-Krylov solver for flexible multibody dynamics 

      Serban, Radu; Melanz, Daniel; Li, Ang; Stanciulescu, Ilinca; Jayakumar, Paramsothy; Negrut, Dan (2015)
      This paper describes an approach to numerically approximate the time evolution of multibody systems with flexible (compliant) components. Its salient attribute is that at each time step, both the formulation of the system ...
    • GR-FET application for high-frequency detection device 

      Mahjoub, Akram M.; Nicol, Alec; Abe, Takuto; Ouchi, Takahiro; Iso, Yuhei; Kida, Michio; Aoki, Noboyuki; Miyamoto, Katsuhiko; Omatsu, Takashige; Bird, Jonathan P.; Ferry, David K.; Ishibashi, Koji; Ochiai, Yuichi (2013)
      A small forbidden gap matched to low-energy photons (meV) and a quasi-Dirac electron system are both definitive characteristics of bilayer graphene (GR) that has gained it considerable interest in realizing a broadly ...
    • Gradient Estimation for Sensitivity Analysis and Adaptive Multiuse Interface Rejection in Code-division Multiple-access Systems 

      Mandayam, Narayan B.; Aazhang, Behnaam (1997-07-20)
      In this paper, we consider a direct-sequence code-division multiple-access (DS-CDMA) system in the framework of a discrete-event dynamic system (DEDS) in order to optimize the system performance. Based on this formulation, ...
    • Gradient estimation for stochastic optimization of optical code-division multiple-access systems. II. Adaptive detection 

      Mandayam, Narayan B.; Aazhang, Behnaam (1997-05-20)
      For pt.I see ibid., vol.15, no.4, p.731-41 (1997). We develop infinitesimal perturbation analysis (IPA)-based stochastic gradient algorithms for deriving optimum detectors with the average probability of bit error being ...
    • Gradient Estimation for Stochastic Optimization of Optical Code-Division Multiple-Access Systems: Part I -- Generalized Sensitivity Analysis 

      Mandayam, Narayan B.; Aazhang, Behnaam (1997-05-20)
      For optimizing the performance of optical code-division multiple-access (CDMA) systems, there is a need for determining the sensitivity of the bit-error rate (BER) of the system to various system parameters. Asymptotic ...
    • Graphene Ambipolar Multiplier Phase Detector 

      Yang, Xuebei; Liu, Guanxiong; Rostami, Masoud; Balandin, Alexander A.; Mohanram, Kartik (2011-10)
      We report the experimental demonstration of a multiplier phase detector implemented with a single top-gated graphene transistor. Ambipolar current conduction in graphene transistors enables simplification of the design ...
    • Graphene as an atomically thin interface for growth of vertically aligned carbon nanotubes 

      Rao, Rahul; Chen, Gugang; Arava, Leela Mohana Reddy; Kalaga, Kaushik; Ishigami, Masahiro; Heinz, Tony F.; Ajayan, Pulickel M.; Harutyunyan, Avetik R. (2013)
      Growth of vertically aligned carbon nanotube (CNT) forests is highly sensitive to the nature of the substrate. This constraint narrows the range of available materials to just a few oxide-based dielectrics and presents a ...
    • Graphene Photonic Devices for Terahertz and Mid-Infrared 

      Gao, Weilu (2013-11-08)
      Graphene and other strictly two-dimensional materials are the rising stars on the horizon of material science, condensed matter physics and engineering. The richness of optical and electronic properties of graphene attract ...
    • Graphene–protein field effect biosensors: glucose sensing 

      Viswanathan, Sowmya; Narayanan, Tharangattu N.; Aran, Kiana; Fink, Kathryn D.; Paredes, Jacobo; Ajayan, Pulickel M.; Filipek, Slawomir; Miszta, Przemyslaw; Tekin, H. Cumhur; Inci, Fatih; Demirci, Utkan; Li, Pingzuo; Bolotin, Kirill I.; Liepmann, Dorian; Renugopalakrishanan, V. (2015)
      Chronic diseases are becoming more prevalent, and the complexities of managing patients continue to escalate, since their care must be balanced between the home and clinical settings. Diabetes is the most advanced example, ...
    • Graphical Models via Univariate Exponential Family Distributions 

      Yang, Eunho; Ravikumar, Pradeep; Allen, Genevera I.; Liu, Zhandong (2015)
      Undirected graphical models, or Markov networks, are a popular class of statistical models, used in a wide variety of applications. Popular instances of this class include Gaussian graphical models and Ising models. In ...
    • Half-Duplex Estimate-and-Forward Relaying: Bounds and Code Design 

      Chakrabarti, Arnab; de Baynast, Alexandre; Sabharwal, Ashutosh; Aazhang, Behnaam (2006-07-01)
      We propose a coding scheme for half-duplex estimate-and-forward relaying. Our first contribution is to present an achievable rate for the estimate-and-forward protocol. We also derive the achievable rate for the special ...
    • Half-Duplex Estimate-and-Forward Relaying:Bounds and Code Design 

      Chakrabarti, Arnab; de Baynast, Alexandre; Sabharwal, Ashutosh; Aazhang, Behnaam (2006-01-01)
      We propose a coding scheme for half-duplex estimate-and-forward relaying. Our first contribution is to present an achievable rate for the estimate-and-forward protocol. We also derive the achievable rate for the special ...