UScholar Works
 
Filters: School Or College: "College of Engineering" Collection: "ir_uspace"
1 - 25 of 76
Number of results to display per page
CreatorTitleDescriptionSubjectDate
1 Chaudhuri, Reaz A.Three-dimensional singular stress field at the front of a crack and lattice crack deviation (LCD) in a cubic single crystal plateA novel eigenfunction expansion technique, based in part on separation of the thickness variable, is developed to derive three-dimensional asymptotic stress fields in the vicinity of the front of a semi-infinite through-crack weakening an infinite plate made of a homogeneous cubic single crystal. C...2010-05-12
2 Liu, FengSelf-consistent tight-binding methodA self-consistent tight-binding formalism is described. The self-consistency is achieved by the introduction of a chemical hardness matrix and a generalization of the Huckel model to make the tight-binding Hamiltonian an implicit functional of the charge density. Studies of the band structures of d...Tight-binding method; Self-consistency; Huckel model1995-10
3 Regehr, JohnPoster abstract: TinyOS 2.1 adding threads and memory protection to tinyOSThe release of TinyOS 2.0 two years ago was motivated by the need for greater platform flexibility, improved robustness and reliability, and a move towards service oriented application development. Since this time, we have seen the community embrace these efforts and add support for additional hardw...2008-01-01
4 Liu, FengMagnetism of Al-Mn quasicrystalsThe effect of symmetry and concentration of Mn on the magnetism of Al-Mn quasicrystals has been investigated through self-consistent density-functional calculations using molecular clusters and supercell band-structure schemes. A single Mn atom surrounded by 54 Al atoms in an icosahedral or a cuboct...Al-Mn quasicrystals; Self-consistent; Density-functional calculations1993-07
5 Evans, DavidGraphical man/machine communications: May 1967Semiannual technical report for period ending 15 May, 1967.1967-05
6 Mathews, V. John; Schlegel, ChristianComputationally efficient multiuser detection for coded CDMAAbstract: Computationally efficient multiuser detection for coded asynchronous CDMA systems is investigated. The particular receiver studied is a near-far resistant multi-user detector known as the projection receiver (PR) [originally developed in [1, 2]]. The PR perfoms multiple access interference...1997
7 Furse, Cynthia M.New IEEE AP-S education web site: course/lab notes, scholarships, K-12 outreachGreetings from the Snowy West! This month I am pleased to announce a new effort on the part of the IEEE Antennas and Propagation Society Education Committee to collect course and laboratory links relevant to the AP-S community, and compile them in a central location where they can be easily accessed...IEEE AP-S; Education web site; Course notes; Lab notes; K-12 outreach2004
8 Freire, JulianaLegoDB: customizing relational storage for XML documentsXML is becoming the predominant data exchange format in a variety of application domains (supply-chain, scientific data processing, telecommunication infrastructure, etc.). Not only is an increasing amount of XML data now being processed, but XML is also increasingly being used in business-critical...LegoDB; XML Schema2002
9 Liu, FengQuantum size effect on the magnetism of finite systemsThe magnetic moments of the ferromagnetic transition metals Fe, Co, and Ni confined to one-dimensional chains are found to fluctuate with increasing chain length before converging to the infinite limit. This quantum size effect is derived from a simple first-principles theory that we have developed...Quantum size; Finite systems; Ferromagnetic transition metals; Magnetic moments; Fe; Co; Ni; Molecular-orbital approach1990-07
10 Freire, JulianaShreX: managing XML documents in relational databasesWe describe ShreX, a freely-available system for shredding, loading and querying XML documents in relational databases. ShreX supports all mapping strategies proposed in the literature as well as strategies available in commercial RDBMSs. It provides generic (mapping-independent) functions for...ShreX; XML Schema; Mapping strategies2004
11 Seeley, DonnPassword cracking: a game of witsA password cracking algorithm seems like a slow and bulky item to put in a worm, but the worm makes this work by being persistent and efficient. The worm is aided by some unfortunate statistics about typical password choices.Password cracking algorithm; Computer worms1989
12 Evans, DavidGraphical man/machine communications: November 1966Semiannual progress report for period ending 30 November, 1966.1966-11
13 Stevens, KennethCAD directions for high performance asynchronous circuitsThis paper describes a novel methodology for high performance asynchronous design based on timed circuits and on CAD support for their synthesis using Relative Timing. This methodology was developed for a prototype iA32 instruction length decoding and steering unit called RAPPID ("Revolving Asynchro...1999
14 Christensen, Douglas A.; Herron, James N.Evanescent coupling in a waveguide fluoroimmunosensorA key factor in the analysis of evanescently-coupled optical sensors, such as the planar waveguide immunosensor analyzed here, is the efficiency of coupling between the optical waveguide modes and the fluorescent sources located on the surface of the waveguide. This is an important parameter in dete...Evanescent coupling; Waveguide; Fluoroimmunosensor1992
15 Christensen, Douglas A.; Vincent, G. MichaelFiberoptic laser angioplasty probe with optical steerabilityWe have designed and bench tested an optically steerable fiberoptic probe for use in laser angioplasty. The unique feature of this design is the use of a gradient-index (GRIN) lens attached to the distal end of a seven-fiber bundle. By selecting which fiber of the bundle is illuminated by the source...Fiberoptic probe; GRIN lens; Steerability1990
16 Christensen, Douglas A.Plasma-etched polymer waveguides for intrachip optical interconnectsOptical intrachip communication offers the potential advantages of high speed and lack of electrical interference. We report on progress made on an interconnect design using GaAs LEDs, polymer waveguides, and photodiodes in a silicon substrate. The polymer waveguides are fabricated in polyimide or p...Polymer waveguides; Intrachip interconnects; LEDs1998
17 Christensen, Douglas A.; Herron, James N.Comparison of robust coupling techniques for planar waveguide immunosensorsWe have analyzed and fabricated two different coupling schemes to meet the requirements for a convenient means of coupling into a planar waveguide immunosensor that is relatively insensitive to beam alignment. These are the "launch" coupler and the grating coupler. Each possesses advantages and dis...Planar waveguide immunosensors; Fluorescence; Launch coupler; Grating coupler1993
18 Christensen, Douglas A.Laser diode coherence length variation with drive current: a tool for dispersion measurementsA visible light (670nm) laser diode was used as a variable coherence length source to measure dispersion characteristics in single-mode fibers. The diode's spectral width, measured against increasing drive current, was found to change from about 16 nanometers to less than 0.2 nanometer. The corresp...Laser diode; Fiber interferometry1992
19 Brunvand, Erik L.Practical advances in asynchronous design and in asynchronous/synchronous interfacesAsynchronous systems are being viewed as an increasingly viable alternative to purely synchronous systems. This paper gives an overview of the current state of the art in practical asynchronous circuit and system design in four areas: controllers, datapaths, processors, and the design of asynchr...1999
20 Evans, DavidGraphical man/machine communications: May 1969Semi-Annual Technical Report 1 December 1968 - 30 May 19691969-05
21 Stringfellow, Gerald B.Order and surface processes in III-V semiconductor alloysSemiconductor alloys have become increasingly useful during the last four decades because, through the use of alloys, the properties of semiconductors can be tailored by varying the composition to precisely match the requirements for specific electronic and photonic devices.Semiconductor alloys; Transmission-electron-diffraction pattern; Organometallic Vaper-phase epitaxy1997
22 Christensen, Douglas A.; Andrade, Joseph D.Improved sensitivity in ellipsometry of thin biochemical films by employing sublayersEllipsometry is widely used for investigating the optical properties of thin films on planar substrates, including films of adsorbed proteins or polymers. The average thickness and effective refractive index of the adsorbed layer are calculated by measuring the A and ¥ ellipsometry parameters. Unfo...Biochemical films; SiO2 sublayer1990
23 Stevens, KennethAlgorithms for MIS vector generation and pruningIgnoring the effect of simultaneous switching for logic gates causes silicon failures for high performance microprocessor designs. The main reason to omit this effect is the run time penalty and potential over-conservatism. Run times are directly proportional to the vector sizes. Efficient algorithm...2006
24 Regehr, JohnInterface contracts for TinyOSTinyOS applications are built with software components that communicate through narrow interfaces. Since components enable fine-grained code reuse, this approach has been successful in creating applications that make very efficient use of the limited code and data memory on sensor network nodes. How...2007-01-01
25 Harrison, Reid R.Validation of adaptive threshold spike detector for neural recordingWe compare the performance of algorithms for automatic spike detection in neural recording applications. Each algorithm sets a threshold based on an estimate of the background noise level. The adaptive spike detection algorithm is suitable for implementation in analog VLSI; results from a proof-of-...Spike detection; Neural recording; Ation potential; VLSI2004-01-01
1 - 25 of 76