Now showing items 1020-1039 of 2173

• #### Laser-assisted metalorganic chemical vapor deposition of zinc selenide ﻿

(1992)
Laser-assisted metalorganic chemical vapor deposition (LMOCVD) has been used to grow epitaxial zinc selenide at temperatures as low as 200$\sp\circ$C. The metalorganic sources, dimethylzinc (DMZ) and diethylselenide (DESe), ...
• #### Laser-assisted metalorganic chemical vapor deposition of zinc sulfide ﻿

(1997)
Laser-assisted metalorganic chemical vapor deposition (MOCVD) was used to grow crystalline zinc sulfide at temperatures as low as 200$\sp\circ$C. The metalorganic sources, dimethylzinc and diethylsulfide, were photodissociated ...
• #### A Lateral Flow Assay for Quantitative Detection of Amplified HIV-1 RNA ﻿

(2012-09-21)
Although the accessibility of HIV treatment in developing nations has increased dramatically over the past decade, viral load testing to monitor the response of patients receiving therapy is often unavailable. Existing ...
• #### Lattice Algorithms for Compression Color Space Estimation in JPEG Images ﻿

(2001-08-01)
JPEG (Joint Photographic Experts Group) is an international standard to compress and store digital color images [5]. Given a color image that was previously JPEG-compressed in some hidden color space, we aim to estimate ...
• #### Layered Dynamic Fault Detection and Tolerance for Robots ﻿

(1993-05-01)
Fault tolerance is increasingly important for space and hazardous environment robotics. Robots need to quickly detect and tolerate internal failures in order to continue performing their tasks without the need for immediate ...
• #### LDPC Code Design for Half-Duplex Decode-and-Forward Relaying ﻿

(2005-09-01)
We propose LDPC code designs for the half-duplex relay channel. Our designs mimic the information theoretic random coding scheme for decode-and-forward relaying. An important advantage of our scheme is that it is built ...
• #### LDPC Code Design for OFDM Channel: Graph Connectivity and Information Bits Positioning ﻿

(2005-07-01)
We present an optimized channel coding scheme for OFDM transmission. In the future wireless standards such IEEE 802.11n, frame error rates (FER) as low as 0.0001 are targeting. Irregular LDPC codes have excellent performance ...
• #### LDPC Code Design for Relay Channel in Time-Division mode ﻿

(2006-06-01)
We address the problem of LDPC code design for relay channel in time-division mode based on a distributed strategy: In the first time slot, the source transmits part of the codeword. The relay and the destination receive ...
• #### LDPC Code-Design for the Relay Channel ﻿

(2006-02-01)
We propose LDPC code designs for the half-duplex relay channel. Our designs are derived from the information theoretic random coding scheme for decode-and-forward relaying. An important advantage of our scheme is that it ...
• #### LDPC Code-Design for the Relay Channel ﻿

(2006-06-01)
We propose LDPC code designs for the half-duplex relay channel. Our designs are derived from the information theoretic random coding scheme for decode-and-forward relaying. An important advantage of our scheme is that it ...
• #### Learning minimum volume sets with support vector machines ﻿

(2006-09-01)
Given a probability law P on d-dimensional Euclidean space, the minimum volume set (MV-set) with mass beta , 0 < beta < 1, is the set with smallest volume enclosing a probability mass of at least beta. We examine the use ...
• #### Least square digital filter design in the frequency domain ﻿

(1991)
This thesis develops new methods for obtaining optimal frequency domain approximation in the design of digital filters. The approach uses a squared error approximation criterion and allows a transition band in the desired ...
• #### Leveraging synthetic biology for tissue engineering applications ﻿

(2014)
Restoration of damaged tissues and organs requires precise control of cellular processes at the molecular level. Synthetic biology offers genetic tools that can be used to program the molecular biology of the cell, thereby ...
• #### Lifting Construction of Non-Linear Wavelet Transforms ﻿

(1998-10-01)
This paper analyzes non-linear wavelet transforms using the lifting construction. The lifting construction exploits a spatial-domain, prediction-error interpretation of the wavelet transform and provides a powerful framework ...
• #### Lightweight Silicon-based Security: Concept, Implementations, and Protocols ﻿

(2013-09-16)
Advancement in cryptography over the past few decades has enabled a spectrum of security mechanisms and protocols for many applications. Despite the algorithmic security of classic cryptography, there are limitations in ...
• #### A Limitation of the Kernel Method for Joint Distributions of Arbitrary Variables ﻿

(1996-02-01)
Recently, Cohen has proposed a construction for joint distributions of arbitrary physical quantities, in direct generalization of joint time-frequency representations. Actually this method encompasses two approaches, one ...
• #### Limited Memory Block Krylov Subspace Optimization for Computing Dominant Singular Value Decompositions ﻿

(2013)
In many data-intensive applications, the use of principal component analysis and other related techniques is ubiquitous for dimension reduction, data mining, or other transformational purposes. Such transformations often ...
• #### The Limiting Density of a Nonlinear System ﻿

(1974-10-20)
The RC filter-hard limiter-RC filter nonlinear system shown in Fig. 1 is the subject of this paper. Because of computational difficulties implicated in the analysis of the above system, only its response to the zero mean ...
• #### Limits and Capabilities of Cooperative Diversity: A Network and Protocol Perspective ﻿

(2011)
Physical-layer cooperation has been demonstrated to vastly improve wireless link reliability and end-to-end throughput by exploiting spatial diversity. Nevertheless, its performance in operational networking environments ...
• #### Limits of acoustic waveguide communication ﻿

(2006)
A new method of wireless data telemetry in oil well services uses compressional acoustic waves to transmit data along the drill string. The compressional acoustic waves are produced as coded wave trains by an acoustic ...