Now showing items 421-440 of 2796

• #### Compact all-fiber quartz-enhanced photoacoustic spectroscopy sensor with a 30.72 kHz quartz tuning fork and spatially resolved trace gas detection ﻿

(2016)
An ultra compact all-fiber quartz-enhanced photoacoustic spectroscopy (QEPAS) sensor using quartz tuning fork (QTF) with a low resonance frequency of 30.72 kHz was demonstrated. Such a sensor architecture has the advantages ...
• #### Compact CH4 sensor system based on a continuous-wave, low power consumption, room temperature interband cascade laser ﻿

(2016)
A tunable diode laser absorption spectroscopy-based methane sensor, employing a dense-pattern multi-pass gas cell and a 3.3 μm, CW, DFB, room temperature interband cascade laser (ICL), is reported. The optical integration ...
• #### Compact Hardware Accelerator for Functional Verification and Rapid Prototyping of 4G Wireless Communication Systems ﻿

(2004-11-01)
In this paper, we propose an FPGA-based hardware accelerator platform with Xilinx Virtex-II V3000 in a compact PCMCIA form factor. By partitioning the complex algorithms in the 4G simulator to the hardware accelerator, ...
• #### A compact mid-infrared dual-gas CH4/C2H6 sensor using a single interband cascade laser and custom electronics ﻿

(2017)
A compact mid-infrared (MIR) dual-gas sensor system was demonstrated for simultaneous detection of methane (CH4) and ethane (C2H6) using a single continuous-wave (CW) interband cascade laser (ICL) based on tunable laser ...
• #### Compact solar autoclave based on steam generation using broadband light-harvesting nanoparticles ﻿

(2013)
The lack of readily available sterilization processes for medicine and dentistry practices in the developing world is a major risk factor for the propagation of disease. Modern medical facilities in the developed world ...
• #### Compact sound-speed sensor for quartz enhanced photoacoustic spectroscopy based applications ﻿

(2015)
A compact sound-speed sensor based on a phase difference method was developed. The sensor employs a U-shaped stainless steel tube with two holes located on its front and back ends, which serves as a sound wave guide. The ...
• #### Compact TDLAS based sensor design using interband cascade lasers for mid-IR trace gas sensing ﻿

(2016)
Two compact TDLAS sensor systems based on different structural optical cores were developed. The two optical cores combine two recent developments, gallium antimonide (GaSb)-based ICL and a compact multipass gas cell (MPGC) ...
• #### A comparative study of multiple accessing schemes ﻿

(1997-11-20)
We compare the performance of different accessing schemes (frequency division, time division and code division) for the uplink in a wireless communication system. We assume an additive white Gaussian noise channel with ...
• #### Comparing and Combining Read Miss Clustering and Software Prefetching ﻿

(2001-09-20)
None
• #### A Comparison of High Order Interpolation Nodes for the Pyramid ﻿

(2015)
The use of pyramid elements is crucial to the construction of efficient hex-dominant meshes [M. Bergot, G. Cohen, and M. Duruflé, J. Sci. Comput., 42 (2010), pp. 345--381]. For conforming nodal finite element methods with ...
• #### Comparison of laser-produced plasma target materials for pumping the 109 nm xenon(2+) Auger laser ﻿

(1995)
Short wavelength lasers have many potential applications in scientific and engineering fields. The goal of this research was to improve the output energy of the Xe$\sp{2+}$ 109 nm laser. We compared cadmium, copper, gold, ...
• #### COMPARISON OF TWO NOVEL LIST SPHERE DETECTOR ALGORITHMS FOR MIMO-OFDM SYSTEMS ﻿

(2006-09-01)
In this paper, the complexity and performance of two novel list sphere detector (LSD) algorithms are studied and evaluated in multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system. ...
• #### Competing mechanisms and scaling laws for carbon nanotube scission by ultrasonication ﻿

(2012)
Dispersion of carbon nanotubes (CNTs) into liquids typically requires ultrasonication to exfoliate individuals CNTs from bundles. Experiments show that CNT length drops with sonication time (or energy) as a power law t?m. ...
• #### Competitive Parallel Disk Prefetching and Buffer Management1 ﻿

(2000)
We provide a competitive analysis framework for online prefetching and buffer management algorithms in parallel IrO systems, using a read-once model of block references. This has widespread applicability to key IrO-bound ...
• #### Compilation Order Matters: Exploring the Structure of the Space of Compilation Sequences Using Randomized Search Algorithms ﻿

(2004-06-18)
Most modern compilers operate by applying a fixed sequence of code optimizations, called a compilation sequence, to all programs. Compiler writers determine a small set of good, general-purpose, compilation sequences by ...
• #### Compiler Driven Architecture Design Space Exploration for DSP Workloads: A Study in Software Programmability Versus Hardware Acceleration ﻿

(2009-11-01)
Wireless communications and video kernels contain vast instruction and data level parallelism that can far outstrip programmable high performance DSPs. Hardware acceleration of these bottlenecks is commonly done at the ...
• #### Compiler Support for Machine-Independent Parallelization of Irregular Problems ﻿

(1994-12-01)
Data-parallel languages, such as HIGH PERFORMANCE FORTRAN or FORTRAND, provide a machine-independent data-parallel programming paradigm in which the applications programmer uses a dialect of a sequential language annotated ...
• #### Compiler Support for Software Prefetching ﻿

(1998-03-02)
Due to the growing disparity between processor speed and main memory speed, techniques that improve cache utilization and hide memory latency are often needed to help applications achieve peak performance. Compiler-directed ...
• #### Compiler Support for Work-Stealing Parallel Runtime Systems ﻿

(2010-03-03)
Multiple programming models are emerging to address an increased need for dynamic task parallelism in multicore shared-memory multiprocessors. Examples include OpenMP 3.0, Java Concurrency Utilities, Microsoft Task Parallel ...
• #### Compiling dynamic languages via typed functional languages ﻿

(2007-10-19)
Dynamic languages enable rapid prototyping, while statically typed languages offer early error-detection and efficient execution. As a result, the usual practice in software development is to build a prototype in a dynamic ...