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On Interference Cancellation And Iterative Techniques, Ryuji Kohno, Robert H. Morelos-Zaragoza Jan 2001

On Interference Cancellation And Iterative Techniques, Ryuji Kohno, Robert H. Morelos-Zaragoza

Faculty Publications

Recent research activities in the area of mobile radio communications have moved to third generation (3G) cellular systems to achieve higher quality with variable transmission rate of multimedia information. In this paper, an overview is presented of various interference cancellation and iterative detection techniques that are believed to be suitable for 3G wireless communications systems. Key concepts are space-time processing and space-division multiple access (or SDMA) techniques. SDMA techniques are possible with software antennas. Furthermore, to reduce receiver implementation complexity, iterative detection techniques are considered. A particularly attractive method uses tentative hard decisions, made on the received positions with the …

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An Alternative Use For Bagasse: Stabilizing Agent For Lead Waste, Michael A. Janusa Jan 2001

An Alternative Use For Bagasse: Stabilizing Agent For Lead Waste, Michael A. Janusa

Faculty Publications

Bagasse amounts to one- third of the cane ground and supplies fuel for the generation of steam in raw factories; however, most factories have an excess of bagasse during regular grinding season. Another method for the utilization of bagasse was investigated using bagasse as a stabilizing agent for heavy metal waste solidified /stabilized in cement. Lead nitrate was used as the model heavy me ta l waste with a 10 or 15 per cent lead by weight to cement loading. Samples were cured for 7, 14, and 28 days at 24°C. Samples containing bagasse typically resulted in TCLP extract lead …

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Privatizing Social Security, Jerry W. Markham Jan 2001

Privatizing Social Security, Jerry W. Markham

Faculty Publications

The 2000 presidential election focused attention on an idea that has been surfacing for some time--the privatization of Social Security. Although opposition remains fierce, proposals for privatization have been gradually gaining acceptance as the inadequacy of benefits from the present system become more apparent, and bankruptcy becomes certain in the absence of additional onerous funding. Resistance to privatization largely centers on concerns that existing participants will lose their contributions and that private accounts may result in investment losses, which would leave future pensioners penniless. The disability and survivor benefits of the present Social Security system also raise concerns for the …

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A Two-Stage Decoder For Pragmatic Trellis-Coded M-Psk Modulation Using A Symbol Transformation, Robert H. Morelos-Zaragoza, Advait Mogre Jan 2001

A Two-Stage Decoder For Pragmatic Trellis-Coded M-Psk Modulation Using A Symbol Transformation, Robert H. Morelos-Zaragoza, Advait Mogre

Faculty Publications

A two-stage decoding procedure for pragmatic trellis-coded modulation (TCM) is introduced. It applies a transformation from the received I-channel and Q-channel samples onto points in a two-dimensional (2-D) signal space that contains a coset constellation. For pragmatic TCM over M-PSK signal sets with ν coded bits per symbol, ν=1, 2, the signal points in the coset constellations represent cosets of a B/QPSK signal subset-associated with the coded bits-in the original M-PSK signal constellation. A conventional Viterbi decoder operates on the transformed symbols to estimate the coded bits. After reencoding these bits, the uncoded bits are estimated in a second stage, …

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A Method Of Non-Data-Aided Carrier Recovery With Modulation Identification, Robert H. Morelos-Zaragoza, Kenta Umebayashi, Ryuji Kohno Jan 2001

A Method Of Non-Data-Aided Carrier Recovery With Modulation Identification, Robert H. Morelos-Zaragoza, Kenta Umebayashi, Ryuji Kohno

Faculty Publications

A non-data aided carrier recovery technique using modulation format identification is proposed. This technique can also be interpreted as a modulation identification method that is robust against static phase and frequency offsets. The performance of the proposed technique is studied and analytical expressions derived for the mean acquisition time to detect lock in the cases of M-PSK, M=2,4,8, and 16-QAM modulation, with respect to frequency offset and signal-to-noise ratio. The results are verified with Monte Carlo simulations. The main advantage of the proposed method lies in its simpler implementation and faster lock detection, when compared to conventional methods.

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Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross Jan 2001

Impact Of The Texas Leaf-Cutting Ant (Atta Texana (Buckley) (Order Hymenoptera, Family Formicidae) On A Forested Landscape, David Kulhavy, L. A. Smith, W. G. Ross

Faculty Publications

Atta texana (Buckley), the Texas leaf-cutting ant, rapidly expanded in a harvested forested landscape on sandhills characterized by droughty soils, causing mortality of planted loblolly pine (Pinus taeda (L.)). The site, composed primarily of Quartzipsamments soils classified as thermic coated Typic Quartzipsamments in the Tonkawa soil series, accounts for approximately 5,000 ha in Nacogdoches, Rusk, Panola, and San Augustine Counties in eastern Texas, USA (Dolezel 1980). These soils are characterized by low fertility, rapid permeability, and extreme acid reaction. These sandhills are resistant to erosion and are considered important ground water recharge areas. The distribution of A. texana central …

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A Role For Actin, Cdc1p, And Myo2p In The Inheritance Of Late Golgi Elements In Saccharomyces Cerevisiae, Olivia W. Rossanese, Catherine A. Reinke, Brooke J. Bevis, Adam T. Hammond, Irina B. Sears, James O'Connor, Benjamin S. Glick Jan 2001

A Role For Actin, Cdc1p, And Myo2p In The Inheritance Of Late Golgi Elements In Saccharomyces Cerevisiae, Olivia W. Rossanese, Catherine A. Reinke, Brooke J. Bevis, Adam T. Hammond, Irina B. Sears, James O'Connor, Benjamin S. Glick

Faculty Publications

In Saccharomyces cerevisiae, Golgi elements are present in the bud very early in the cell cycle. We have analyzed this Golgi inheritance process using fluorescence microscopy and genetics. In rapidly growing cells, late Golgi elements show an actin-dependent concentration at sites of polarized growth. Late Golgi elements are apparently transported into the bud along actin cables and are also retained in the bud by a mechanism that may involve actin. A visual screen for mutants defective in the inheritance of late Golgi elements yielded multiple alleles of CDC1. Mutations in CDC1 severely depolarize the actin cytoskeleton, and these …

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Chloropigment Distribution And Transport On The Inner Shelf Off Duck, North Carolina, E.J. D'Sa, S.E. Lohrenz, J.H. Churchill, V.L. Asper, J.L. Largier, A.J. Williams Iii Jan 2001

Chloropigment Distribution And Transport On The Inner Shelf Off Duck, North Carolina, E.J. D'Sa, S.E. Lohrenz, J.H. Churchill, V.L. Asper, J.L. Largier, A.J. Williams Iii

Faculty Publications

No abstract provided.

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Baseball Cards And The Birth Of The Right Of Publicity: The Curious Case Of Haelan Laboratories V. Topps Chewing Gum, J. Gordon Hylton Jan 2001

Baseball Cards And The Birth Of The Right Of Publicity: The Curious Case Of Haelan Laboratories V. Topps Chewing Gum, J. Gordon Hylton

Faculty Publications

No abstract provided.

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The Professional Athlete: Issues In Child Support, Judith G. Mcmullen Jan 2001

The Professional Athlete: Issues In Child Support, Judith G. Mcmullen

Faculty Publications

No abstract provided.

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Lawyer Fiction In The Saturday Evening Post: Ephraim Tutt, Perry Mason, And Middle-Class Expectations, David Ray Papke Jan 2001

Lawyer Fiction In The Saturday Evening Post: Ephraim Tutt, Perry Mason, And Middle-Class Expectations, David Ray Papke

Faculty Publications

No abstract provided.

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Scientific Evidence In Civil And Criminal Cases, Paul C. Giannelli Jan 2001

Scientific Evidence In Civil And Criminal Cases, Paul C. Giannelli

Faculty Publications

No abstract provided.

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The Use Of Placebos In Clinical Trials: Responsible Research Or Unethical Practice?, Sharona Hoffman Jan 2001

The Use Of Placebos In Clinical Trials: Responsible Research Or Unethical Practice?, Sharona Hoffman

Faculty Publications

Developments in medical research have been occurring at a rapidly increasing rate during the past two decades. Expanding budgets, augmented computer capabilities, and new research tools have all dramatically enhanced research technology. Accompanying the proliferation of medical research are increasing concerns about research risks. This article focuses on placebo-controlled clinical trials. The use of placebos enables clinical investigators to compare results from subjects taking an experimental intervention to results from a group that is receiving an inactive substance, such as a sugar pill, in order to determine the efficacy of the new medication. In recent years, some surgeons have also …

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Safeguarding Juror Privacy: A New Framework For Court Policies And Procedures, Paula Hannaford-Agor Jan 2001

Safeguarding Juror Privacy: A New Framework For Court Policies And Procedures, Paula Hannaford-Agor

Faculty Publications

This article briefly discusses the difficulty courts face in balancing the privacy of citizens summoned for jury service with the rights of litigants and the public to information about those individuals. I propose that focusing on the content of the information re­quested of prospective jurors and the purposes for which juror infor­mation is used by courts provides a more helpful analysis than the legal framework traditionally employed in case law. Specifically, I argue that distinguishing between information that is relevant and information that is not relevant to the fairness or im­partiality of prospective jurors should be the primary analytical framework …

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Renewable Bar Admission: A Template For Making "Professionalism" Real, Jayne W. Barnard Jan 2001

Renewable Bar Admission: A Template For Making "Professionalism" Real, Jayne W. Barnard

Faculty Publications

The citizens of this country should expect no less than the highest degree of professionalism when they have entrusted administration of the rule of law-one of the fundamental tenets upon which our society is based-to the legal profession. Re-examination was not originally required of medical specialists, but [the American Board of Medical Specialties] quickly recognized that a lifetime certification, even with required continuing education provided little incentive for doctors to keep up with new medical knowledge and techniques. Similarly, continuing [legal] education requirements alone are not sufficient to assure the integration of new law and procedure into a lawyer's practice. …

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Fabrication Of Nanometer-Sized Protein Patterns Using Atomic Force Microscopy And Selective Immobilization, Kapila Wadu-Mesthrige, Nabil A. Amro, Jayne C. Garno, Song Xu, Gang Yu Liu Jan 2001

Fabrication Of Nanometer-Sized Protein Patterns Using Atomic Force Microscopy And Selective Immobilization, Kapila Wadu-Mesthrige, Nabil A. Amro, Jayne C. Garno, Song Xu, Gang Yu Liu

Faculty Publications

A new methodology is introduced to produce nanometer-sized protein patterns. The approach includes two main steps, nanopatterning of self-assembled monolayers using atomic force microscopy (AFM)-based nanolithography and subsequent selective immobilization of proteins on the patterned monolayers. The resulting templates and protein patterns are characterized in situ using AFM. Compared with conventional protein fabrication methods, this approach is able to produce smaller patterns with higher spatial precision. In addition, fabrication and characterization are completed in near physiological conditions. The adsorption configuration and bioreactivity of the proteins within the nanopatterns are also studied in situ.

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Colonialism And Landscape In The Americas: Material/Conceptual Transformations And Continuing Consequences, Andrew Sluyter Jan 2001

Colonialism And Landscape In The Americas: Material/Conceptual Transformations And Continuing Consequences, Andrew Sluyter

Faculty Publications

No abstract provided.

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Comparison Of Genomic And Predicted Amino Acid Sequences Of Respiratory And Enteric Bovine Coronaviruses Isolated From The Same Animal With Fatal Shipping Pneumonia, V. N. Chouljenko, X. Q. Lin, J. Storz, K. G. Kousoulas, A. E. Gorbalenya Jan 2001

Comparison Of Genomic And Predicted Amino Acid Sequences Of Respiratory And Enteric Bovine Coronaviruses Isolated From The Same Animal With Fatal Shipping Pneumonia, V. N. Chouljenko, X. Q. Lin, J. Storz, K. G. Kousoulas, A. E. Gorbalenya

Faculty Publications

The complete genome sequences are reported here of two field isolates of bovine coronavirus (BCoV), which were isolated from respiratory and intestinal samples of the same animal experiencing fatal pneumonia during a bovine shipping fever epizootic. Both genomes contained 31028 nucleotides and included 13 open reading frames (ORFs) flanked by 5′- and 3′-untranslated regions (UTRs). ORF1a and ORF1b encode replicative polyproteins pp1a and pp1ab, respectively, that contain all of the putative functional domains documented previously for the closest relative, mouse hepatitis virus. The genomes of the BCoV isolates differed in 107 positions, scattered throughout the genome except the 5′-UTR. Differences …

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Falling Out Of Love With America: The Clinton Impeachment And The Madisonian Constitution, Frank O. Bowman Iii Jan 2001

Falling Out Of Love With America: The Clinton Impeachment And The Madisonian Constitution, Frank O. Bowman Iii

Faculty Publications

First, were the Nixon and Clinton affairs truly as different as my memory makes them? Were the villains of Watergate as villainous and the heroes as heroic as I remember them? Were nearly all the players on both sides of l'affaire Lewinsky as shallow and fatuous as they seemed? Or to put the question in broader historical context, was the impeachment of Bill Clinton truly distinct, not only from Watergate, but from all of the other (fortunately few) occasions on which a president was seriously threatened with removal from office? Second, if the Clinton impeachment really was as bizarre, unprecedented, …

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Does Technology Require New Law?, David D. Friedman Jan 2001

Does Technology Require New Law?, David D. Friedman

Faculty Publications

Technological change affects the law in at least three ways: (1) by altering the cost of violating and enforcing existing legal rules; (2) by altering the underlying facts that justify legal rules; and (3) by changing the underlying facts implicitly assumed by the law, making existing legal concepts and categories obsolete, even meaningless. The legal system can choose to ignore such changes. Alternatively, it may selectively alter its rules legislatively or via judicial interpretation. In this essay I first discuss, as an interesting historical example, past technological changes relevant to copyright law and the law's response. I then go on …

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A Preliminary Assessment Of Tidal Flooding Along The New Hampshire Coast: Past, Present And Future, Larry G. Ward, Jamie R. Adams Jan 2001

A Preliminary Assessment Of Tidal Flooding Along The New Hampshire Coast: Past, Present And Future, Larry G. Ward, Jamie R. Adams

Faculty Publications

This report presents the results of a preliminary study that examines several critical coastal issues for New Hampshire including sea level fluctuations (past, present and future), shoreline migrations, and tidal flooding. Included are: 1) an analysis of sea level changes over the Holocene and resulting shoreline migrations, 2) an assessment of low-lying areas with elevations below selected tidal flooding datums in coastal areas, and 3) an assessment of increases in low-lying areas that are potentially at risk to tidal flooding over the next century due to sea level rise.

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Effect Of Ph And Salt Bridges On Structural Assembly: Molecular Structures Of The Monomer And Intertwined Dimer Of The Eps8 Sh3 Domain, K. V. Radha Kishan, M. E. Newcomer, T. H. Rhodes, S. D. Guilliot Jan 2001

Effect Of Ph And Salt Bridges On Structural Assembly: Molecular Structures Of The Monomer And Intertwined Dimer Of The Eps8 Sh3 Domain, K. V. Radha Kishan, M. E. Newcomer, T. H. Rhodes, S. D. Guilliot

Faculty Publications

The SH3 domain of Eps8 was previously found to form an intertwined, domain-swapped dimer. We report here a monomeric structure of the EPS8 SH3 domain obtained from crystals grown at low pH, as well as an improved domain-swapped dimer structure at 1.8 Å resolution. In the domain-swapped dimer the asymmetric unit contains two "hybrid-monomers." In the low pH form there are two independently folded SH3 molecules per asymmetric unit. The formation of intermolecular salt bridges is thought to be the reason for the formation of the dimer. On the basis of the monomer SH3 structure, it is argued that Eps8 …

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The Asymptotic Equivalence Of The Fisher Information Matrices For Type I And Type Ii Censored Data From Location-Scale Families, Luis A. Escobar, William Q. Meeker Jan 2001

The Asymptotic Equivalence Of The Fisher Information Matrices For Type I And Type Ii Censored Data From Location-Scale Families, Luis A. Escobar, William Q. Meeker

Faculty Publications

Type I and Type II censored data arise frequently in controlled laboratory studies concerning time to a particular event (e.g., death of an animal or failure of a physical device). Log-location-scale distributions (e.g., Weibull, log-normal, and loglogistic) are commonly used to model the resulting data. Maximum likelihood (ML) is generally used to obtain parameter estimates when the data are censored. The Fisher information matrix can be used to obtain large-sample approximate variances and covariances of the ML estimates or to estimate these variances and covariances from data. The derivations of the Fisher information matrix proceed differently for Type I (time …

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Ebusiness In The Forest Products Industry: A Comparison Of The United States And Canada, R. P. Vlosky, O. T. Pitis Jan 2001

Ebusiness In The Forest Products Industry: A Comparison Of The United States And Canada, R. P. Vlosky, O. T. Pitis

Faculty Publications

This study compares eBusiness capabilities of the forest products industries in the United States and Canada. Structural and functional factors limiting or encouraging eBusiness development, attitudes and perceived value of eBusiness, concerns and possible impacts of eBusiness on traditional business practices were studied. Results indicate that high potential exists for eBusiness to flourish in the forest products sectors in both these countries. However, the study indicated that Canadian respondents were further along in Internet implementation in 1998 relative to their U.S. counterparts. In addition, Canadian respondents had a higher degree of satisfaction in achieving the desired benefits of using the …

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A Two-Level Implementation For Lushootseed Morphology, Deryle W. Lonsdale Jan 2001

A Two-Level Implementation For Lushootseed Morphology, Deryle W. Lonsdale

Faculty Publications

This paper describes the implementatio of a computer system that processes Lushootseed word forms. Built on the two-level model and leveraging finite-state technology, the system is able both to parse surface forms to arives at the underlying morphemic decomposition, and to generate surface forms given such a representation. Components of the system are discussed including the lexicon architecture, rule formulation and specification, ans the word-structurer grammar. Issues relevant to processing Lushootseed are discussed including reduplication, allomorphic variation, inflectional and derivational affixation, and morphophonemic alternations.

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Small-Angle X-Ray Studies Of Soot Inception And Growth, Jan P. Hessler, Soenke Seifert, Randall E. Winans, Thomas H. Fletcher Jan 2001

Small-Angle X-Ray Studies Of Soot Inception And Growth, Jan P. Hessler, Soenke Seifert, Randall E. Winans, Thomas H. Fletcher

Faculty Publications

The high spectral intensity of X-rays produced by the undulator at the Basic Energy Sciences Synchrotron Radiation Center of Argonne's Advanced Photon Source has allowed us to perform small-angle X-ray scattering (SAXS) studies of the initial distribution of soot particles formed by various fuels. SAXS provides an in situ probe of the morphology of soot in the region between 1 and 100 nm and complements the ex situ technique of electron microscopy. The basic aspects of SAXS and its potential are illustrated with measurement on a laminar flame of acetylene in air. The more complex fuel toluene has been studied …

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Simulation Of Coal Pyrolysis In Plasma Jet By Cpd Model, Yajun Tian, Kechang Xie, Suyu Zhu, Thomas H. Fletcher Jan 2001

Simulation Of Coal Pyrolysis In Plasma Jet By Cpd Model, Yajun Tian, Kechang Xie, Suyu Zhu, Thomas H. Fletcher

Faculty Publications

Reaction of coal in a plasma jet is complex and extremely rapid, and acetylene and carbon monoxide are the main products in the pyrolysis gas. Coal pyrolysis is assumed as the first step reaction when coal is injected into hot plasma jet with initial average temperature of 3700 K. Chemical percolation devolatilization (CPD) is employed first to simulate this procedure in mechanism. The calculation results indicate coal pyrolysis rate in plasma jet is very fast and the retention time of coal staying in reactor is only several milliseconds. Comparing the calculation with experiment result, it was concluded that the CPD …

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A Non-Authoritative Educational Metadata Ontology For Filtering And Recommending Learning Objects, David Wiley, Mimi M. Recker Jan 2001

A Non-Authoritative Educational Metadata Ontology For Filtering And Recommending Learning Objects, David Wiley, Mimi M. Recker

Faculty Publications

Digital libraries populated with learning objects are becoming popular tools in the creation of instructional technologies. Many current efforts to create standard metadata structures that facilitate the discovery and instructional use of learning objects recommend a single, authoritative metadata record per version of the learning object. However, as we argue in this paper, a single metadata record -- particularly one with fields that emphasize knowledge management and technology, while evading instructional issues -- provides information insufficient to support instructional utilization decisions. To put learning objects to instructional use, users must examine the individual objects, forfeiting the supposed benefits of the …

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Index Of Utah Construction Company / Utah International Collection, 1900-1984 Ms 100, J. Michael Hunter Jan 2001

Index Of Utah Construction Company / Utah International Collection, 1900-1984 Ms 100, J. Michael Hunter

Faculty Publications

This is a detailed index of the Utah Construction / Utah International Collection or Manuscript Collection 100 (MS 100) housed in Special Collections at the Stewart Library, Weber State University. The collection comprises 275 boxes of records chronicling the activities of Utah Construction Company/Utah International. From these files comes a history of worldwide construction and mining activities undertaken by the company for nearly a century. Records of the Administrative Departments: meeting announcements, minutes, agendas, and financial files pertaining to the Board of Directors and Executive Committee. The collection also includes organizational charts, financial data, annual reports, daybooks, journals, ledgers, legal …

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Measurement Of Open Beauty Production In Photoproduction At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari Jan 2001

Measurement Of Open Beauty Production In Photoproduction At Hera, J. Breitweg, S. Chekanov, M. Derrick, D. Krakauer, S. Magill, B. Musgrave, A. Pellegrino, J. Repond, R. Stanek, R. Yoshida, Margarita C. K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, G. Levi, A. Margotti, T. Massam, R. Nania, F. Palmonari

Faculty Publications

The production and semi-leptonic decay of heavy quarks have been studied in the photoproduction process e+p → e+ + dijet + e- + X with the ZEUS detector at HERA using an integrated luminosity of 38.5 pb-1. Events with photon-proton centre-of-mass energies, Wγp, between 134 and 269 GeV and a photon virtuality, Q2, less than 1 GeV2 were selected requiring at least two jets of transverse energy Ejet1(2)T > 7(6) GeV and an electron in the final state. The electrons were identified by employing the ionisation energy loss measurement. The contribution of beauty quarks was determined using the transverse momentum of …

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