| | Creator | Title | Description | Subject | Date |
|---|
| 1 |  | Sarofim, Adel F.; Pugmire, Ronald J. | 13C NMR analysis of soot produced from model compounds and a coal | Soot samples, including the associated organics, produced from an Illinois No. 6 coal (five samples) and two model compounds, biphenyl (three samples) and pyrene (two samples), have been studied by 13C NMR methods. The coal soot data served as a guide to selection of the temperature range that would... | 13C NMR; Biphenyl; Aromatic cluster size | 2001 |
| 2 | | Smith, Grant D.; Borodin, Oleg; Bedrov, Dmitro | 13C NMR spin-lattice relaxation and conformational dynamics in a 1,4-polybutadiene melt | We have performed molecular dynamics (MD) simulations of a melt of 1,4-polybutadiene (PBD, 1622 Da) over the temperature range 400?273 K. 13C NMR spin?lattice relaxation times (T1) and nuclear Overhauser enhancement (NOE) values have been measured from 357 to 272 K for 12 different resonances. The T... | Polybutadiene melt; 13C NMR; Spin-lattice relaxation; Conformational dynamics; Molecular dynamics simulation | 2001 |
| 3 |  | Myers, Chris J. | A standard-cell self-timed multiplier for energy and area critical synchronous systems | This paper describes the design of a standard-cell self-timed multiplier for use in energy and area critical synchronous systems. The area of this multiplier is bounded by N rather than N2 as seen in more traditional combinational parallel array designs, where N is the word size. Energy has a polyn... | | 2001 |
| 4 |  | Mathews, V. John | An adaptive channel estimator for CDMA systems in multipath fading channels | ABSTRACT CDMA systems in multipath fading channels need to estimate channel parameters for coherent detection of the transmitted signals. In this paper we present a simple but effective channel estimation algorithm that can be incorporated into most types of multiuser receivers to obtain good dete... | | 2001 |
| 5 |  | Stevens, Kenneth; Myers, Chris J. | An asynchronous instruction length decoder | This paper describes an investigation of potential advantages and pitfalls of applying an asynchronous design methodology to an advanced microprocessor architecture. A prototype complex instruction set length decoding and steering unit was implemented using self-timed circuits. [The Revolving Async... | | 2001 |
| 6 |  | Myers, Chris J.; Stevens, Kenneth | An asynchronous instruction length decoder | Abstract-This paper describes an investigation of potential advantages and pitfalls of applying an asynchronous design methodology to an advanced microprocessor architecture. A prototype complex instruction set length decoding and steering unit was implemented using self-timed circuits. [The Revolvi... | | 2001 |
| 7 |  | Myers, Chris J. | Analog decoding of product codes | A design approach is presented for soft-decision decoding of block product codes ("block turbo codes") using analog computation with MOS devices. Application of analog decoding to large code sizes is also considered with the introduction of serial analog interfaces and pipeline schedules. | | 2001 |
| 8 |  | Myers, Chris J.; Schlegel, Christian | Analog MAP decoder for (8, 4) hamming code in subthreshold CMOS | Abstract - An all-MOS analog tail-biting MAP decoder is presented for an (8,4) Hamming code. The decoder implements a probability propagation algorithm using subthreshold CMOS networks. Physical results verify the expected behavior of the decoderand demonstrate robustness of analog decoding circuit... | | 2001 |
| 9 |  | Myers, Chris J.; Schlegel, Christian | Analog MAP decoder for (8, 4) hamming code in subthreshold CMOS | An all-MOS analog implementation of a MAP decoder is presented for the (8, 4) extended Hamming code. This paper describes the design and analysis of a tail-biting trellis decoder implementation using subthreshold CMOS devices. A VLSI test chip has recently returned from fabrication, and preliminary ... | | 2001 |
| 10 |  | Mathews, V. John | Blind identification of bilinear systems | Abstract This paper is concerned with the blind identification of bilinear systems excited by higher-order white noise. Unlike prior work that restricted the bilinear system model to simple forms and required the excitation to be Gaussian distributed, the results of this paper are applicable to a m... | | 2001 |
| 11 |  | Lighty, Joann; Sarofim, Adel F. | Carbon dioxide effects on metal vaporization during coal combustion | Coal combustion products may take one of two forms. Residual ash (> 1 micron) is formed by particle shrinkage and breaking during combustion. Some material will vaporize and later recondense. During recondensation, these molecules have a high affinity for submicron particles because of the large sur... | Coal combustion products; Metal vaporization; Carbon dioxide; Residual ash | 2001 |
| 12 |  | Johnson, Christopher R.; Parker, Steven G.; Whitaker, Ross T.; Hansen, Charles D. | Computational field visualization | Today, scientists, engineers, and medical researchers routinely use computers to simulate complex physical phenomena. Such simulations present new challenges for computational scientists, including the need to effectively analyze and visualize complex three-dimensional data. As simulations become mo... | Volume rendering; Isosurface extraction; Ray tracing; Multi-field visualizations | 2001 |
| 13 |  | Miller, Jan D. | Conformation of chemisorbed oleate at a calcite surface | The surface chemistry of the calcite/oleate flotation system was examined by in situ FT-NIR/IRS. Spectra of combination and overtone bands of aliphatic stretching vibrations revealed gauche/trans conformational changes that occurred solely as a function of temperature. The conformational changes wer... | chemisorption; oleate; calcite; gauche/trans conformation; rotational isomerism | 2001 |
| 14 |  | Stevens, Kenneth | Congruent weak conformance | Congruent weak conformance is a property between formal models capturing the desired relationship between a specification and its implementation by allowing unused and redundant circuitry and tolerating unspec4jied behavior in the unreachable state space. By providing greater flexibility in design t... | | 2001 |
| 15 |  | Zhang, Lixin | Description of functionality of the impulse memory controller | This document describes the functionality and control flow models for each component of the impulse main memory controller. | Impulse memory controller | 2001 |
| 16 |  | Miller, Jan D. | Dispersed oil impact on froth stability in flotation | Foam stability in flotation has been studied for more than half of the last century, however, the mechanisms responsible for the defoaming action of many presently used reagents are not completely understood. This research presents oil flotation data, which may be used in the evaluation of aqueous ... | froth control; foam control; oil flotation; polyoxyethylene 10 lauryl ether (C12E 10); isobutylcarbinol (MIBC) | 2001 |
| 17 |  | Balasubramonian, Rajeev | Dynamically allocating processor resources between nearby and distant ILP | Modern superscalar processors use wide instruction issue widths and out-of-order execution in order to increase instruction-level parallelism (ILP). Because instructions must be committed in order so as to guarantee precise exceptions, increasing ILP implies increasing the sizes of structures s... | Instruction-level parallelism; Microarchitecture; Primary thread; Future thread; Instruction reuse buffer | 2001 |
| 18 |  | Myers, Chris J. | Efficient exact two-level hazard-free logic minimization | Abstract This paper presents a new approach to two-level hazard-free sum-of-products logic minimization. No currently available minimizers for single-output literal-exact two-level hazard-free logic minimization can handle large circuits without synthesis times ranging up over thousands of seconds.... | | 2001 |
| 19 |  | Bedrov, Dmitro; Smith, Grant D. | Exploration of conformational phase space in polymer melts: a comparison of parallel tempering and conventional molecular dynamics simulations | Parallel tempering molecular dynamics simulations have been performed for 1,4-polybutadiene polymer melts in the 323 K-473 K temperature domain at atmospheric pressure. The parallel tempering approach provides a vast improvement in the equilibration and sampling of conformational phase space for ... | Polymer melts; 1,4-polybutadiene; Conformational phase space; Parallel tempering | 2001 |
| 20 |  | Gopalakrishnan, Ganesh | Formal specification of the virtual component interface standard in the unified modeling language | As part of our charge from the Virtual Sockets Interface Alliance we search for a notation in which standards documents can be precisely specified. We approach the specification for standard problem in the context of the Virtual Component Interface Standard. We propose six orthogonal axes of specifi... | Unified Modeling Language | 2001 |
| 21 |  | Chatterjee, Prosenjit; Gopalakrishnan, Ganesh | Formally specifying memory consistency models and automatically generating executable specifications | Memory ordering properties of shared memory multiprocessors are more subtle and less well understood than cache coherence. These properties tend to be processor or platform specific and are not always formally specified. It is difficult to compare even those platforms whose memory ordering propert... | Computer memory; Memory consistency models; Memory ordering; Shared memory multiprocessors | 2001 |
| 22 |  | Myers, Chris J. | Framework of timed trace theoretic verification revisited | This paper develops a framework to support trace theoretic verification of timed circuits and systems. A theoretical foundation for classifying timed traces as either successes or failures is developed. The concept of the semimirror is introduced to allow conformance checking thus supporting hierarc... | | 2001 |
| 23 |  | Johnson, Christopher R. | Grid-enabling problem solving environments: a case study of SCIRun and NetSolve | Combining the functionality of NetSolve, a grid-based middleware solution, with SCIRun, a graphically-based problem solving environment (PSE), yields a platform for creating and executing grid-enabled applications. Using this integrated system, hardware and/or software resources not previously ac... | Grid computing; SCIRun; NetSolve; Problem solving environment; Numerical libraries; Parallel programming (Computer science) | 2001 |
| 24 |  | Hansen, Charles D.; Hollerbach, John M. | Improved calibration Framework for electromagnetic tracking devices | Electromagnetic trackers have many favorable characteristics but are notorious for their sensitivity to magnetic field distortions resulting from metal and electronic equipment in the environment. We categorize existing tracker calibration methods and present an improved technique for reducing stati... | Electromagnetic tracking; Tracking devices | 2001 |
| 25 |  | Guilkey, James Edward | Improved contact algorithm for the material point method and application to stress propagation in granular material | Contact between deformable bodies is a difficult problem in the analysis of engineering systems. A new approach to contact has been implemented using the Material Point Method for solid mechanics, Bardenhagen, Brackbill, and Sulsky (2000a). Here two improvements to the algorithm are described. The f... | Contact algorithm; Material point method; Wave propagation; Granular material; Solid mechanics | 2001 |
