Digital Commons Network^™

Discrete-Time Recurrent Neural Network And Its Application To Compression Of Infra-Red Spectrum, Leong-Kwan Li, Sally S. L. Shao

Mathematics and Statistics Faculty Publications

We study the discrete-time recurrent neural network that derived from the Leaky-integrator model and its application to compression of infra-red spec- trum. Our results show that the discrete-time Leaky-integrator recurrent neural network (RNN) model can be used to approximate the continuous-time model and inherit its dynamical characters if a proper step size is chosen. Moreover, the discrete-time Leaky-integrator RNN model is absolutely stable. By developing the double discrete integral method and employing the state space search algorithm for the discrete-time recurrent neural network model, we demonstrate with quality spectra regenerated from the compressed data how to compress the infra-red spectrum …

A Machine Made Of Words: Our Incompletely Theorized Constitution, Gregory Brazeal

Faculty Publications

No abstract provided.

Transition From Higher Education To The Labor Market: Unemployment Among Graduates From The Gender Perspective In The Palestinian Territory, Saleh Alkafri

Poverty, Gender, and Youth

This research highlights and identifies the factors affecting the low potential of female graduates entering the labor market in the Palestinian Territories, despite their achievements in education. The results show that employers’ attitudes limit the occupations and activities that women can engage in, and delays in obtaining work often lead women out of the labor market. However, the report also shows that the problem of unemployment among graduates is worse in specific areas and disciplines where education and training do not match the requirements of the labor market. Given this general trend, Palestinian decisionmakers face extraordinary challenges to provide opportunities …

On Socle-Regularity And Some Notions Of Transitivity For Abelian P-Groups, Brendan Goldsmith, Peter Danchev

Articles

In the present work the interconnections between various notions of transitivity for Abelian p-groups and the recently introduced concepts of socle-regular and strongly socle-regular groups are studied.

Bayesian Inference For Exponential Random Graph Models, Alberto Caimo, Nial Friel

Articles

Exponential random graph models are extremely difficult models to handle from a statistical viewpoint, since their normalising constant, which depends on model parameters, is available only in very trivial cases. We show how inference can be carried out in a Bayesian framework using a MCMC algorithm, which circumvents the need to calculate the normalising constants. We use a population MCMC approach which accelerates convergence and improves mixing of the Markov chain. This approach improves performance with respect to the Monte Carlo maximum likelihood method of Geyer and Thompson (1992).

Aligning Game Activity With Educational Goals: Following A Constrained Design Approach To Instructional Computer Games, Brett E. Shelton, Jon Scoresby

Instructional Technology and Learning Sciences Faculty Publications

We discuss the design, creation and implementation of an instructional game for use in a high school poetry class following a commitment to an educational game design principle of alignment. We studied groups of instructional designers and an interactive fiction computer game they built. The game was implemented in a 9th grade English classroom to see if the designed alignments were realized in the classroom. Results from observations and collected design artifacts suggest the alignment theory created extra challenges and rewards for the game designers. They encountered tensions between creating an exciting game-like atmosphere with inventive programming techniques while …

The Constitutional Feedback Loop: Why No State Institution Typically Resolves Whether A Law Is Constitutional And What, If Anything, Should Be Done About It, Daniel D. Domenico

Denver Law Review

No abstract provided.

On Graded Prime And Primary Submodules, Kürşat Hakan Oral, Ünsal Teki̇r, Ahmet Göksel Ağargün

Turkish Journal of Mathematics

Let G be a multiplicative group. Let R be a G-graded commutative ring and M a G-graded R-module. Various properties of graded prime submodules and graded primary submodules of M are discussed. We have also discussed the graded radical of graded submodules of multiplication graded R-modules.

A Note On Weighted A_P(G)-Modules, Serap Öztop

Turkish Journal of Mathematics

Let G be a locally compact abelian group and w be a weight function on G. In this paper, we show that the space A_{p,w}(G) is a Banach module over the Figà-Talamanca Herz algebra A_p(G) and study the multiplier space from A_p(G) to A_{p,w}(G).

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.

On Almost Complex Structures In The Cotangent Bundle, Ari̇f Sali̇mov, Aydin Gezer, Seher Aslanci

Turkish Journal of Mathematics

E. M. Patterson and K. Yano studied vertical and complete lifts of tensor fields and connections from a manifold M_n to its cotangent bundle T^{\ast} (M_n). Afterwards, K. Yano studied the behavior on the cross-section of the lifts of tensor fields and connections on a manifold M_n to T^{\ast} (M_n) and proved that when \varphi defines an integrable almost complex structure on M_n, its complete lift ^C \varphi is a complex structure. The main result of the present paper is the following theorem: Let \varphi be an almost complex structure on a Riemannian manifold M_n. Then the complete lift ^C …

Rotational Embeddings In E^4 With Pointwise 1-Type Gauss Map, Kadri̇ Arslan, Bengü Kiliç Bayram, Betül Bulca, Young Ho Ki̇m, Cengi̇zhan Murathan, Günay Öztürk

Turkish Journal of Mathematics

In the present article we study the rotational embedded surfaces in E^4. The rotational embedded surface was first studied by G. Ganchev and V. Milousheva as a surface in E^4. The Otsuki (non-round) sphere in E^4 is one of the special examples of this surface. Finally, we give necessary and sufficient conditions for the flat Ganchev-Milousheva rotational surface to have pointwise 1-type Gauss map.

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.

Cover And Contents

Turkish Journal of Mathematics

No abstract provided.

A Secure Online Payment System, Shristi Pant

Theses and Dissertations--Computer Science

An online payment system allows a customer to make a payment to an online merchant or a service provider. Payment gateways, a channel between customers and payment processors, use various security tools to secure a customer’s payment information, usually debit or credit card information, during an online payment. However, the security provided by a payment gateway cannot completely protect a customer’s payment information when a merchant also has the ability to obtain the payment information in some form. Furthermore, not all merchants provide a secure payment environment to their customers and, despite having a standard payment policy, adhere to it. …

Checkpointing And Recovery In Distributed And Database Systems, Jiang Wu

Theses and Dissertations--Computer Science

A transaction-consistent global checkpoint of a database records a state of the database which reflects the effect of only completed transactions and not the re- sults of any partially executed transactions. This thesis establishes the necessary and sufficient conditions for a checkpoint of a data item (or the checkpoints of a set of data items) to be part of a transaction-consistent global checkpoint of the database. This result would be useful for constructing transaction-consistent global checkpoints incrementally from the checkpoints of each individual data item of a database. By applying this condition, we can start from any useful checkpoint of …

Now For The Science Bit: Implementing Community-Based Learning In Chemistry, Claire M. Mcdonnell, Patricia Ennis, Leslie Shoemaker

Articles

Purpose – The purpose of this paper is to contribute to the understanding of student learning from community engagement by critically assessing the implementation of this pedagogical approach in the context of teaching and learning chemistry and also evaluating the role of personal development in student-community engagement.

Design/methodology/approach – A case study on the implementation since 2007 of community-based learning (also called service-learning) projects in an academic department in Ireland is presented. Analysis of assessment grades, student reflective accounts and evaluation questionnaires informs this work as does a recently completed self-assessment of our activities using Shumer’s Self-Assessment for Service Learning. …

Inside College Of Humanities And Fine Arts, Winter 2011, University Of Northern Iowa. College Of Humanities And Fine Arts.

Inside: College of Humanities and Fine Arts

Inside this issue:

-- Message from the Dean
-- CHFA News in Short
-- Applause
-- Transitions
-- CHFA Responds with Global Initiatives
-- Student Excellence
-- Fourth Annual CHFA Graduate Research Symposium
-- Around the College
-- Alumni Features
-- Class Notes
-- Message from the Development Director

2011 Lynn University Men's Baseball Media Guide, Lynn University Athletics

Athletics Media Guides

The 2011 Lynn University Men’s Baseball Media Guide is a product of the Lynn University Sports Information Office.

The Wright Message, 2011-2012, University Of Northern Iowa. Department Of Mathematics.

The Wright Message

Inside this issue:

-- Dear Department Alumni and Friends
-- Around Wright Hall
-- New College
-- Programs Revision
-- Math ≠ 800
-- Baumler Mathematics Education Scholarship
-- Two Retire
-- Putnam Exam
-- Math Ed Lab - Then and now
-- 2011 - 2012 Tenure-Stream Faculty
-- Making an Impact
-- The Question
-- Spotlight on Undergraduates
-- Projects and Grants
-- P.S.M. Program in Industrial Mathematics
-- Actuarial Science Alumni
-- Department of Mathematics Contribution Form
-- Department of Mathematics Funds

An Advanced Controller For A Semi-Active Wheelchair Suspension, David J. Smith

Master's Theses

An Advanced Controller for a Semi-Active Wheelchair Suspension was designed, built and tested.  The suspension consisted of a Goodyear 1S3-011 air spring, IQ Valves high speed proportional solenoid valve, and a custom made accumulator.  Several controller designs specific to semi-active suspensions were designed and tested.  The controllers investigated were skyhook, acceleration driven damping, and a combined control law employing both a dual and single sensor version.  The implementation of skyhook control suffered performance degradation from the idealization due to particular elements of hardware, however acceleration driven damping showed a marked and statistically significant improvement over skyhook control, in hardware, by …

Using R To Build And Assess Network Models In Biology, Gregg Hartvigsen

Biology

In this paper we build and analyze networks using the statistical and programming environment R and the igraph package. We investigate random, small-world, and scale-free networks and test a standard problem of connectivity on a random graph. We then develop a method to study how vaccination can alter the structure of a disease transmission network. We also discuss a variety of other uses for networks in biology. © EDP Sciences, 2011.

Developing A Thesis And Utilizing Supporting Evidence, Leah Kind

Writing Bootcamp Unit

Allow students more experience with formulating a thesis statement and drawing on specific textual evidence to support it. Students can utilize any reading they are familiar with—this familiarity allows them to already have knowledge of the piece’s content, and ability to use the most appropriate points as support. This activity assumes some prior exposure to and practice with thesis statements.

The Design And Modification Of A Sputter System For Dc Reactive Sputtering Of Alumina And Zirconia Thin Films, Diane Van Ho

LSU Master's Theses

Yttria-stabilized zirconia (7% YSZ) is the most used material for thermal barrier coatings (TBCs) to reduce the conductive heat transfer on turbine blades, but it is not resistant to infrared radiation. In order to reduce radiation heat transfer, alternating materials, such as alumina and zirconia, can be used to fabricate multi-layer coatings in which each layer is optimized to reflect a targeted range of wavelength. This research aims to fabricate these multi-layer coatings by reactive magnetron sputtering. Reactive magnetron sputtering is the sputtering of an elemental target in the presence of a reactive gas that will react with the target …

Fault Detection In Process Control Plants Using Principal Component Analysis, Vamshi Krishna Kandula

LSU Master's Theses

The aim of this thesis is to use a statistical method (principal component analysis) to detect a fault in a system. PCA is a dimensionality reduction technique that is used here. First the PCA algorithm was implemented on a simple two dimensional random data to reduce its dimensionality. Then the algorithm was implemented on a three dimensional data from a linear first order process and introduce some white noise later on and compare the results with that under normal operating conditions, thus determining the presence of a fault. Then data from a real time plant is considered for testing. This …

Smart Access Control System With Behavioral Profiling And Dynamic Pin Concept, Lohit Penubaku

LSU Master's Theses

Since ancient time, an access control device has been used for securing valuable properties as well as lives from threatening peoples. The most representative security device is Lock/Key. Recently, those security device technologies have been improved tremendously and provided various types of security methods. Nevertheless, these methods are not individually perfect to provide optimal security so that in recent years many such methods have been combined and used together to provide the required level of security. However, such combination can enhance security for limited number of users only but very difficult to provide scalable security with the number of users …

Interpretation Of Power Phenomena In Three Phase Systems With Neutral Using Instantaneous Reactive Power P-Q Theory, Rahul Anil Kantharia

LSU Master's Theses

The Instantaneous Reactive power (IRP) p-q theory considered as a major power theory as well as a primary fundamental for switching compensator control in three-phase systems, is analyzed in order to verify its ability to describe and identify the power properties or power phenomena in a 3pN system with asymmetrical and non-sinusoidal voltages along with unbalanced loads. This analysis is an outcome of the misinterpretations of power phenomena in three-wire circuits shown by IRP p-q theory under non-sinusoidal conditions. Different load and supply conditions such as balanced, unbalanced and Harmonic generating loads along with asymmetrical and non-sinusoidal voltages are assumed …

The Design Of A Computer System To Determine The Causes Of Edema Using Magnetic Resonance Spectroscopy, Carl Allen Fink

LSU Master's Theses

Diabetes is a growing problem in the U.S.A., closely linked to the current obesity epidemic. Two common complications of diabetes, osteomyelitis of the foot, and Charcot's joint, are impossible to differentiate via traditional Magnetic Resonance Imaging. The background of Magnetic Resonance Spectroscopy, which transforms the time-domain MRI signal into the frequency domain spectrum, is explored, and its use to aid in this differentiation is proposed. Artificial Neural Networks can be employed to evaluate the MRS data and to automate the process.

Treatment Effects Of Attention Process Training For An Individual With Idiopathic Parkinson's Disease, Erin Renee' Guillory

LSU Master's Theses

Parkinson’s disease (PD) is characterized by a degeneration of the substantia nigra, resulting in a loss of dopaminergic neurons. Cognitive impairments, evident in 72% of people with PD (PWP) are indicated by deficits in visuospatial capacity, memory, executive functioning, and attention (Cooper, Sagar, Jordan, Harvey, & Sullivan, 1991; Duffy, 2005). Unfortunately, to date, there is little research that demonstrates improvement of these cognitive processes, particularly those affecting memory recall and attentional skills. The purpose of this study was to examine the effects of utilizing Attention Process Training (APT; Sohlberg & Mateer, 2005), a therapeutic protocol designed for individuals who have …

Effect Of Sediment Slurry Application On Selected Aspects Of Sulfur, Iron, And Manganese Biogeochemistry In A Coastal Louisiana Marsh, Martin Kyle Maxwell

LSU Master's Theses

Coastal wetlands, long recognized to be among the most productive ecosystems on the planet, are being lost at a disturbingly high rate in coastal Louisiana due to both eustatic sea-level rise and land subsidence. A number of approaches have been proposed for reducing wetland loss and restoring deteriorated wetlands, among which the addition of sediment to increase marsh surface elevation is promising. However, little is known about how the added sediment affects the biogeochemistry of marsh sediment. The objective of this study was to determine the effects of sediment slurry addition on sulfur, iron, and manganese biogeochemistry in a subsiding …