Physical Sciences and Mathematics Commons^™

Hadamard Ideals And Hadamard Matrices With Circulant Core, I. S. Kotsireas, C. Koukouvinos, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

Computational Algebra methods have been used successfully in various problems in many fields of Mathematics. Computational Algebra encompasses a set of powerful algorithms for studying ideals in polynomial rings and solving systems of nonlinear polynomial equations efficiently. The theory of Grobner bases is a cornerstone of Computational Algebra, since it provides us with a constructive way of computing a kind of a particular basis of an ideal which enjoys some important properties. In this paper we introduce the concept of Hadamard ideals in order to establish a new approach to the construction of Hadamard matrices with circulant core. Hadamard ideals …

Hadamard Ideals And Hadamard Matrices With Two Circulant Cores, I. S. Kotsireas, C. Koukouvinos, Jennifer Seberry

Faculty of Informatics - Papers (Archive)

We apply Computational Algebra methods to the construction of Hadamard matrices with two circulant cores, given by Fletcher, Gysin and Seberry. We introduce the concept of Hadamard ideal, to systematize the application of Computational Algebra methods for this construction. We use the Hadamard ideal formalism to perform exhaustive search constructions of Hadamard matrices with two circulant cores for the twelve orders 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52. The total number of such Hadamard matrices is proportional to the square of the parameter. We use the Hadamard ideal formalism to compute the proportionality constants for …

Synchronized Flicker Measurement For Flicker Transfer Evaluation In Power Systems, S. Perera, Duane Robinson, S. Elphick, D. Geddey, N. Browne, V. Smith, V. J. Gosbell

Faculty of Informatics - Papers (Archive)

Voltage fluctuations caused by rapidly changing loads, such as arc furnaces, can propagate to different parts of a power system. Although the flicker level at its origin can be high, levels that are measured at other sites are subject to attenuation, a process that is influenced by fault levels, transformer impedances, line impedances, and composition of the connected loads. This paper presents the methodology, measurement results, and data analysis in relation to synchronized flicker measurements carried out in a high-voltage (HV)/medium-voltage (MV) power system which contains an arc furnace supplied by a dedicated feeder connected to the HV busbar. The …

A Pixel-Based Robust Image Watermarking System, Wenming Lu, Wanqing Li, Rei Safavi-Naini, Philip Ogunbona

Faculty of Informatics - Papers (Archive)

Robust image watermarking systems are required to be resistant to geometric attacks in addition to common image processing tasks, such as JPEG compression. However, robustness against geometric attacks, such as rotation, scaling and translation, still remains one of the most challenging research topics in image watermarking. We propose a new pixel-based watermarking system in which a binary logo is embedded, a bit per pixel, in the pixel domain of an image. The encoder of the proposed system is based on a sliding window embedding scheme that applies the local average quantization index modulation (QIM), to achieve geometric attack robustness. The …

On-Demand Partial Schema Delivery For Multimedia Metadata, S. J. Davis, I. S. Burnett

Faculty of Informatics - Papers (Archive)

XML is a popular approach to interoperable exchange of Multimedia metadata between a wide range of devices. This paper explores extending the use of the Remote XML Exchange Protocol (previously proposed by the authors) as a mechanism to provide efficient interaction with complex Multimedia XML documents and their associated schemas. This is particularly applicable to users with limited application complexity devices and/or limited bandwidth connections. Many XML documents do not fully utilize all the information present in a given schema; thus, users download substantial redundant information for the current application. This paper introduces the use of RXEP for the transmission …

Format-Independent Multimedia Streaming, Joseph Thomas-Kerr, I. Burnett, C. H. Ritz

Faculty of Informatics - Papers (Archive)

The Bitstream Binding Language (BBL) is a new technology developed by the authors and being standardized by MPEG, which describes how multimedia content and metadata can be mapped onto streaming formats. This paper describes a particular application of BBL - format-independent multimedia streaming. This means that streaming servers no longer require additional software modules in order to support new content formats as they are introduced. Instead, the server requires only a BBL description of the mapping between the content format and the stream, and any content in the new format may then be delivered by the streaming server. This approach …

Large Deviations For Stochastic Systems With Memory, Salah-Eldin A. Mohammed, Tusheng Zhang

Articles and Preprints

We establish a large deviations principle for stochastic delay equations driven by small multiplicative white noise. Both upper and lower large deviations estimates are obtained.

The Cuoricino And Cuore Double Beta Decay Experiments, R. Ardito, C. Arnaboldi, D. R. Artusa, F.T. Avignone Iii, M. Balata, I. Bandac, M. Barucci, J.W. Beeman, F. Bellini, C. Brofferio, C. Bucci, S. Capelli, F. Capozzi, L. Carbone, S. Cebrian, M. Clemenza, C. Cosmelli, O. Cremonesi, R.J. Creswick, I. Dafinei, A. De Waard, M. Diemoz, M. Dolinski, H.A. Farach, F. Ferroni, E. Fiorini, S.J. Freedman, G. Frossati, C. Gargiulo, A. Giuliani, P. Gorla, E. Guardincerri, T. Gutierrez, E. E. Haller, K. M. Heeger, I. G. Irastorza, E. Longo, R. Maruyama, S. Morganti, S. Nisi, C. Nones, E. B. Norman, A. Nucciotti, Nu Xu, E. Olivieri, P. Ottonello, M. Pallavicini, E. Palmieri, M. Pavan, M. Pedretti, G. Pessina, S. Pirro, E. Previtali, L. Risegari, C. Rosenfeld, S. Sangiorgio, M. Sisti, A. R. Smith, L. Torres, G. Ventura, L. Zanotti

Physics

After an introduction on the various experimental techniques to be adopted in searches for double beta decay, the new approach based on the use of cryogenic low temperature detectors is described. The present results are reported on the limit for neutrinoless double beta decay of n¹³⁰Te obtained with the large bolometric detector CUORICINO. This setup consists of 44 cubic crystals of natural TeOn₂ with 5 cm sides and 18 crystals of 3 × 3 × 6 cmn³. Four of these latter crystals are made with isotopically enriched materials: two in n¹²⁸Te and two …

Tme Volume 3, Number 2

The Mathematics Enthusiast

No abstract provided.

Scwds Briefs: Volume 22, Number 2 (July 2006 )

Southeastern Cooperative Wildlife Disease Study: Publications

SCWDS BRIEFS
July 2006
USDA Publishes Final CWD Rule
Chronic Wasting Disease (CWD) Herd Certification Program and Interstate Movement of Farmed or Captive Deer
International Avian Influenza Conferences
Highly pathogenic avian influenza (HPAI) H5N1 viruses
HPAI H5N1
Two New NIH Grants & Three New Grad Students
Trypanosoma cruzi
Chagas disease (American trypanosomiasis)
Dr. Susan Little
Borrelia lonestari
Southern Tick- Associated Rash Illness (STARI)
Amblyomma americanum, the lone star tick
Dr. Michael Yabsley
Protozoal Epidemics Among Frogs in Georgia
Rana heckscheri
Perkinsus-like protozoan
Polymerase chain reaction (PCR)
Parasite & Disease Problems in Mourning Doves
West Nile virus
Ascardia columbae
Trichomonas gallinae …

Radiative Recombination And Ultralong Exciton Photoluminescence Lifetime In Gan Freestanding Film Via Two-Photon Excitation, Yongchun Zhong, Kam Sing Wong, Weili Zhang, David C. Look

Physics Faculty Publications

We have measured the photoluminescence (PL) lifetime of a freestanding GaN film using one-photon and two-photon excitations to demonstrate the dramatic difference in exciton recombination dynamics at the surface and in the bulk. An ultralong exciton PL lifetime of 17.2 ns at 295 K is observed from a GaN freestanding film using two-photon excitation, whereas less than 100 ps lifetime is observed for one-photon excitation, suggesting that nonradiative processes from surface defects account for the short PL lifetime measured. A monotonic increase in two-photon excited PL lifetime with increasing temperature and the linear dependence of the exciton lifetime with emission …

Survival Of White Marlin (Tetrapturus Albidus) Released From Commercial Pelagic Longline Gear In The Western North Atlantic, David W. Kerstetter, John E. Graves

Marine & Environmental Sciences Faculty Articles

To estimate postrelease survival of white marlin (Tetrapturus albidus) caught incidentally in regular commercial pelagic longline fishing operations targeting swordfish and tunas, short-duration popup satellite archival tags (PSATs) were deployed on captured animals for periods of 5-43 days. Twenty (71.4%) of 28 tags transmitted data at the preprogrammed time, including one tag that separated from the fish shortly after release and was omitted from subsequent analyses. Transmitted data from 17 of 19 tags were consistent with survival of those animals for the duration of the tag deployment. Postrelease survival estimates ranged from 63.0% (assuming all nontransmitting tags were …

Refuge Update – July/August 2006, Volume 3, Number 4

RefugeUpdate (USFWS-NWRS)

Table of Contents:
Taking the Bighorns Home, page 9
Focus on . . . Transportation, page 10-18
Living and Learning the Desert, page 21
Studying Bats, Coast to Coast, page 24

Adsorption Of Hydrogen Molecules On The Platinum-Doped Boron Nitride Nanotubes, Xiaojun Wu, J.L. Yang, Xiao Cheng Zeng

Xiao Cheng Zeng Publications

Adsorption of hydrogen molecules on platinum-doped single-walled zigzag (8,0) boron nitride (BN) nanotube is investigated using the density-functional theory. The Pt atom tends to occupy the axial bridge site of the BN tube with the highest binding energy of −0.91 eV. Upon Pt doping, several occupied and unoccupied impurity states are induced, which reduces the band gap of the pristine BN nanotube. Upon hydrogen adsorption on Pt-doped BN nanotube, the first hydrogen molecule can be chemically adsorbed on the Pt-doped BN nanotube without crossing any energy barrier, whereas the second hydrogen molecule has to overcome a small energy barrier of …

Hyperspherical Close-Coupling Calculations For Electron-Capture Cross Sections In Low-Energy Ne¹⁰⁺ +H (1s) Collisions, P. Barragan, Anh-Thu Le, C. D. Lin

Physics Faculty Research & Creative Works

We present total and partial electron-capture cross sections for Ne¹⁰⁺ +H (1s) collisions at energies from 0.01 eV to 1 keV using the hyperspherical close-coupling method. Good agreements with the previous calculations by the classical-trajectory Monte-Carlo method are found for total capture cross section, but not for partial cross sections, especially below about 200 eV/amu. We found that the total cross section is mainly due to the population of n=7 channels and only at energies above 50 eV/amu n = 5,6 channels begin to contribute to the total cross section.

Stochastic Propagation Modeling And Early Detection Of Malicious Mobile Code, Xin Xu

Doctoral Dissertations

Epidemic models are commonly used to model the propagation of malicious mobile code like a computer virus or a worm. In this dissertation, we introduce stochastic techniques to describe the propagation behavior of malicious mobile code. We propose a stochastic infection-immunization (INIM) model based on the standard Susceptible-Infected-Removed (SIR) epidemic model, and we get an explicit solution of this model using probability generating function (pgf.). Our experiments simulate the propagation of malicious mobile code with immunization. The simulation results match the theoretical results of the model, which indicates that it is reliable to use INIM model to predict the propagation …

Effects Of Annealing Conditions On Ferroelectric Nanomesa Self-Assembly, Mengjun Bai, Matt Poulsen, Stephen Ducharme

Stephen Ducharme Publications

We report the results of studies of the effects of annealing conditions on the morphology of ferroelectric nanomesas. The nanomesa patterns were fabricated by self-assembly from continuous ultra-thin Langmuir–Blodgett films of copolymers of vinylidene fluoride and trifluoroethylene. Annealing in the paraelectric phase induced surface reorganization into disc-shaped ferroelectric nanomesas approximately 9 nm thick and 100 nm in diameter. Several factors affect the nanomesa dimensions, such as polymer composition, substrate material, deposition conditions, and annealing temperature. The height and diameter of the nanomesas both increase with increasing annealing temperature. Annealing studies in the ferroelectric–paraelectric coexistence region show that only the paraelectric …

Neural Network Based Decentralized Excitation Control Of Large Scale Power Systems, Wenxin Liu, Ganesh K. Venayagamoorthy, Donald C. Wunsch, David A. Cartes, Jagannathan Sarangapani

Electrical and Computer Engineering Faculty Research & Creative Works

This paper presents a neural network (NN) based decentralized excitation controller design for large scale power systems. The proposed controller design considers not only the dynamics of generators but also the algebraic constraints of the power flow equations. The control signals are calculated using only local signals. The transient stability and the coordination of the subsystem controllers can be guaranteed. NNs are used to approximate the unknown/imprecise dynamics of the local power system and the interconnections. All signals in the closed loop system are guaranteed to be uniformly ultimately bounded (UUB). Simulation results with a 3-machine power system demonstrate the …

Field Studies Of Hydrophobic Filter Pack Performance In Free Product Monitoring And Recovery, Nathan J. Brandner

Masters Theses

Multiple field experiments were conducted to determine the performance of hydrophobic filter packs, compared to the hydrophilic industry standard filter pack in free product hydrocarbon recovery. Laboratory and field studies have been previously performed in support of enhancing free product hydrocarbon recovery with the use of hydrophobic filter pack designs. This study was an attempt to test the efficacy of using hydrophobic filter pack materials to enhance free product recovery.

Six recovery wells were installed at three field sites, each site utilizing a pair of recovery wells, one hydrophobic and one hydrophilic, to compare their performances. Fine-grained hydrophobic filter pack …

Interspecies Comparison Of Pentosidine Accumulation And Its Correlation With Age In Birds, Jesse A. Fallon, Robert L. Cochrane, Brian Dorr, Hillar Klandorf

United States Department of Agriculture Wildlife Services: Staff Publications

Recent studies suggest that a linear correlation exists between the age of individual birds and accumulation of the advanced glycation endproduct pentosidine (Ps). We compared Ps accumulation in skin tissue of Ruffed Grouse (Bonasa umbellus) and Double-crested Cormorants (Phalacrocorax auritus). Skin samples were taken from the breasts of 52 Ruffed Grouse of known ages ranging from a few days to 10 years. Skin was cleaned of feathers and adipose tissue, acid hydrolyzed, and measured for collagen content via hydroxyproline spectrophotometric assay. Pentosidine concentrations were determined using reverse-phase high-performance liquid chromatography. Fluorescent detection (excitation: 310 nm, emission: …

Effectiveness Of A Motion-Activated Laser Hazing System For Repelling Captive Canada Geese, Scott J. Werner, Larry Clark

United States Department of Agriculture Wildlife Services: Staff Publications

Effective management techniques are needed to disperse Canada geese (Branta canadensis) and reduce the human–wildlife conflicts associated with high population densities. We evaluated the effectiveness of a motion-activated laser hazing system for repelling captive Canada geese. The system decreased occupancy of 8 pairs of geese on the treated subplot by 83% during habituation trials. When an additional pair of geese were added to the experiment, occupancy of the treated subplot decreased .92% during each of the 20 nights of the extended habituation test. Avoidance (conditioned during the test) remained ,80% of pretreatment levels during the 2 days immediately following the …

Wmi Outdoor News Bulletin * July 2006, Volume 60, No. 7

Wildlife Management Institute Outdoor News Bulletin

Contents:

New refuge policies finally make it across the finish line

USDA creates NRCS Agricultural Wildlife Conservation Center

NRCS assists woodcock restoration in the Northeast

More on 72nd Conference Special Sessions

Global warming is culprit in western forest fires?

ONB survey

Worth reading: Of Mice and Mountain Lions: The Adventures of a Wildlife Biologist

Fall 2006 Nova Southeastern University Farquhar College Of Arts And Sciences Student Catalog, Nova Southeastern University

Undergraduate Programs Course Catalogs

No abstract provided.

Image Interpolation By Two-Dimensional Parametric Cubic Convolution, Jiazheng Shi, Stephen E. Reichenbach

School of Computing: Faculty Publications

Cubic convolution is a popular method for image interpolation. Traditionally, the piecewise-cubic kernel has been derived in one dimension with one parameter and applied to two-dimensional (2-D) images in a separable fashion. However, images typically are statistically nonseparable, which motivates this investigation of nonseparable cubic convolution. This paper derives two new nonseparable, 2-D cubic-convolution kernels. The first kernel, with three parameters (designated 2D-3PCC), is the most general 2-D, piecewise-cubic interpolator defined on [-2, 2] x [-2, 2] with constraints for biaxial symmetry, diagonal (or 90 rotational) symmetry, continuity, and smoothness. The second kernel, with five parameters (designated 2D-5PCC), relaxes the …

Cs 765: Foundations Of Neurocomputation, Mateen M. Rizki

Computer Science & Engineering Syllabi

This course is designed to help you develop a solid understanding of neural network algorithms and architectures. At the end of this course you should be able to read and critically evaluate most neural network papers published in major journals, (e.g. IEEE Transaction on Neural Networks, Neural Networks, and Neural Computation). In addition, you should be able to implement a broad range of network architectures and learning algorithms for a variety of applications.

Cs 480/680: Comparative Languages, Krishnaprasad Thirunarayan

Computer Science & Engineering Syllabi

This course will introduce fundamental concepts and paradigms underlying the design of modern programming languages. For concreteness, we study the details of an object-oriented language (e.g. Java), and a functional language (e.g., Scheme). The overall goal is to enable comparison and evaluation of existing languages. The programming assignments will be coded in Java 5 and in Scheme.

Cs 466/666: Formal Languages And Automata, Krishnaprasad Thirunarayan

Computer Science & Engineering Syllabi

This course introduces the theory of formal languages and automata. The primary focus is on the two methods of defining languages: using generators (e.g., grammars/regular expressions) and using recognizers (e.g., finite state machines). Along with presenting the fundamentals, this course will develop and examine relationships among the various specification methods for the regular languages and the context-free languages, in detail. Overall, we plan to cover the first seven chapters of the text book.

Cs 209: Computer Programming For Business Ii, Dennis Kellermeier

Computer Science & Engineering Syllabi

CS 209 is the second of a two quarter sequence in programming for business students. It is required for Management Information Science majors. The courses are designed to help students achieve a high degree of facility in intermediate level programming.

Cs 240: Computer Science - I, Ronald F. Taylor

Computer Science & Engineering Syllabi

Basic concepts of programming and programming languages are introduced. Emphasis is on structured programming and stepwise refinement. For CS/CEG majors with familiarity of a high-level programming language. Prerequisite: MTH 130 (Precalculus) or MPL 5. 4 credit hours.

Cs 205-07: Computer Literacy And Office Automation, John P. Herzog

Computer Science & Engineering Syllabi

Basic computer terminology, word processing, spreadsheets, databases, and graphics.