Physical Sciences and Mathematics Commons^™

An Investigation Of The User Satisfaction Of Customer Relationship Management Program, Sangeun Lee

Senior Honors Theses and Projects

The thesis investigates user satisfaction for Microsoft Dynamics CRM 2011 by conduction surveys to graduate level students. The training manual was developed to guide the way to follow instructions to create an order and an invoice.

From Climate Action To Coalition: Ypsilanti And Emu As Models For Sustainability, Erica Mooney

Senior Honors Theses and Projects

Inspired by leading EMU's engagement with Ypsilanti's climate Action Plan in 2011, a journey began to discovering ways to cultivate healthy relationships through sustainability. How have other universities addressed climate change? How have other municipalities work with schools addressing sustainability? I explored national programs as well as a thorough review of Michigan's other public universitites. This thesis is a mix of best practices research and a proposal to both city and school administrators and stakeholders. Reviewing what other campuses and towns have done to address environmental and social justice, and the complex realms of economic and community development, a coalition …

Genetic Association Testing Of Copy Number Variation, Yinglei Li

Theses and Dissertations--Statistics

Copy-number variation (CNV) has been implicated in many complex diseases. It is of great interest to detect and locate such regions through genetic association testings. However, the association testings are complicated by the fact that CNVs usually span multiple markers and thus such markers are correlated to each other. To overcome the difficulty, it is desirable to pool information across the markers. In this thesis, we propose a kernel-based method for aggregation of marker-level tests, in which first we obtain a bunch of p-values through association tests for every marker and then the association test involving CNV is based on …

On The Dimension Of A Certain Measure Arising From A Quasilinear Elliptic Partial Differential Equation, Murat Akman

Theses and Dissertations--Mathematics

We study the Hausdorff dimension of a certain Borel measure associated to a positive weak solution of a certain quasilinear elliptic partial differential equation in a simply connected domain in the plane. We also assume that the solution vanishes on the boundary of the domain. Then it is shown that the Hausdorff dimension of this measure is less than one, equal to one, greater than one depending on the homogeneity of the certain function. This work generalizes the work of Makarov when the partial differential equation is the usual Laplace's equation and the work of Lewis and his coauthors when …

Decay Estimates On Trace Norms Of Localized Functions Of Schrödinger Operators, Aaron Saxton

Theses and Dissertations--Mathematics

In 1973, Combes and Thomas discovered a general technique for showing exponential decay of eigenfunctions. The technique involved proving the exponential decay of the resolvent of the Schrödinger operator localized between two distant regions. Since then, the technique has been been applied to several types of Schrödinger operators. This dissertation will show that the Combes--Thomas method works well with trace, Hilbert--Schmidt and other trace-type norms. The first result we prove shows exponential decay on trace-type norms of a resolvent of a Schrödinger operator localized between two distant regions. We build on this result by applying the Combes--Thomas method again to …

Ψ-Epistemic Models Are Exponentially Bad At Explaining The Distinguishability Of Quantum States, Matthew S. Leifer

Mathematics, Physics, and Computer Science Faculty Articles and Research

The status of the quantum state is perhaps the most controversial issue in the foundations of quantum theory. Is it an epistemic state (state of knowledge) or an ontic state (state of reality)? In realist models of quantum theory, the epistemic view asserts that nonorthogonal quantum states correspond to overlapping probability measures over the true ontic states. This naturally accounts for a large number of otherwise puzzling quantum phenomena. For example, the indistinguishability of nonorthogonal states is explained by the fact that the ontic state sometimes lies in the overlap region, in which case there is nothing in reality that …

Energy Efficient Security And Privacy Management In Sensor Clouds, Vimal Kumar

Doctoral Dissertations

"Sensor Cloud is a new model of computing for Wireless Sensor Networks, which facilitates resource sharing and enables large scale sensor networks. A multi-user distributed system, however, where resources are shared, has inherent challenges in security and privacy. The data being generated by the wireless sensors in a sensor cloud need to be protected against adversaries, which may be outsiders as well as insiders. Similarly the code which is disseminated to the sensors by the sensor cloud needs to be protected against inside and outside adversaries. Moreover, since the wireless sensors cannot support complex, energy intensive measures, the security and …

Study Of User Search Activities With Two Discovery Tools At An Academic Library, Xi Niu, Tao Zhang, Hsin-Liang Chen

Libraries Faculty and Staff Scholarship and Research

The goal of this study was to investigate and compare user search activities of two discovery tools at an academic library. The implementation of a new discovery tool (Primo by Ex Libris) to replace an existing system (VuFind) provided a unique opportunity to collect transaction logs of both systems and examine user search behavior in an empirical test. Results from a transaction log analysis and a user study of this study have contributed to the understanding of users’ search behavior and their preferences and perceptions of the two systems. We find both commonalities and differences between VuFind and Primo for …

On Some Inferential Problems With Recurrent Event Models, Withanage Ajith Raveendra De Mel

Doctoral Dissertations

"Recurrent events (RE) occur in many disciplines, such as biomedical, engineering, actuarial science, sociology, economy to name a few. It is then important to develop dynamic models for their modeling and analysis. Of interest with data collected in a RE monitoring are inferential problems pertaining to the distribution function F of the time between occurrences, or that of the distribution function G of the monitoring window, and their functionals such as quantiles, mean. These problems include, but not limited to: estimating F parametrically or nonparametrically; goodness of fit tests on an hypothesized family of distributions; efficient of tests; regression-type models, …

Smith Falls State Park Forest Enhancement Project For Aspen, Mike Groenewold

Nebraska Game and Parks Commission: White Papers, Conference Presentations, and Manuscripts

A 76-mile stretch of the middle Niobrara River, which includes Smith Falls State Park, is designated as a National Scenic River. This reach of the river is referred to as the biological crossroads of the Midwest as the river’s deeply incised valley is the intersection of a diverse mix of plant communities including several forest and prairie types. The mix of forests supports a rich diversity of species including rare plants such as glacial relict aspen and paper birch.

In recent decades eastern red cedar and ponderosa pine densities have increased substantially in the middle Niobrara River due to fire …

The Utility Of Deformable Image Registration For Small Artery Visualisation In Contrast-Enhanced Whole Body Mr Angiography, Daniel Foley, Jacinta Browne, Xiahai Zhuang, Barry Sheane, Dearbhail O'Driscoll, Daniel Cannon, Niall Sheehy, James Meaney, Andrew Fagan

Articles

Purpose;

An investigation was carried out into the effect of three image registration techniques on the diagnostic image quality of contrast-enhanced magnetic resonance angiography (CE-MRA) images.

Methods Whole-body CE-MRA data from the lower legs of 27 patients recruited onto a study of asymptomatic atherosclerosis were processed using three deformable image registration algorithms. The resultant diagnostic image quality was evaluated qualitatively in a clinical evaluation by four expert observers, and quantitatively by measuring contrast-to-noise ratios and volumes of blood vessels, and assessing the techniques’ ability to correct for varying degrees of motion.

Results The first registration algorithm (‘AIR’) introduced significant stenosis-mimicking …

Data Stories And Pictures; Discovering Lessons And Principles For Statistics And For Life (Abstract), Rafe Donahue

Kenneth C. Schraut Memorial Lectures

Our world is full of data and of analyses of these data. Why are we doing to our data what we are doing to our data?

Performance Modeling And Optimization Techniques For Heterogeneous Computing, Supada Laosooksathit

Doctoral Dissertations

Since Graphics Processing Units (CPUs) have increasingly gained popularity amoung non-graphic and computational applications, known as General-Purpose computation on GPU (GPGPU), CPUs have been deployed in many clusters, including the world's fastest supercomputer. However, to make the most efficiency from a GPU system, one should consider both performance and reliability of the system.

This dissertation makes four major contributions. First, the two-level checkpoint/restart protocol that aims to reduce the checkpoint and recovery costs with a latency hiding strategy in a system between a CPU (Central Processing Unit) and a GPU is proposed. The experimental results and analysis reveals some benefits, …

Extracting Continuum-Like Deformation And Stress From Molecular Dynamics Simulations, Lili Zhang, John Jasa, George Gazonas, Antoine Jerusalem, Mehrdad Negahban

Department of Mechanical and Materials Engineering: Faculty Publications

We present methods that use results from molecular dynamics (MD) simulations to construct continuum parameters, such as deformation gradient and Cauchy stress, from all or any part of an MD system. These parameters are based on the idea of minimizing the difference between MD measures for deformation and traction and their continuum counterparts. The procedures should be applicable to non-equilibrium and inhomogeneous systems, and to any part of a system, such as a polymer chain. The resulting procedures provide methods to obtain first and higher order deformation gradients associated with any subset of the MD system, and associated expressions for …

The User Attribution Problem And The Challenge Of Persistent Surveillance Of User Activity In Complex Networks, Claudio Taglienti

CCE Theses and Dissertations

In the context of telecommunication networks, the user attribution problem refers to the challenge faced in recognizing communication traffic as belonging to a given user when information needed to identify the user is missing. This is analogous to trying to recognize a nameless face in a crowd. This problem worsens as users move across many mobile networks (complex networks) owned and operated by different providers. The traditional approach of using the source IP address, which indicates where a packet comes from, does not work when used to identify mobile users.

Recent efforts to address this problem by exclusively relying on …

Evaluating Heuristics And Crowding On Center Selection In K-Means Genetic Algorithms, William Mcgarvey

CCE Theses and Dissertations

Data clustering involves partitioning data points into clusters where data points within the same cluster have high similarity, but are dissimilar to the data points in other clusters. The k-means algorithm is among the most extensively used clustering techniques. Genetic algorithms (GA) have been successfully used to evolve successive generations of cluster centers. The primary goal of this research was to develop improved GA-based methods for center selection in k-means by using heuristic methods to improve the overall fitness of the initial population of chromosomes along with crowding techniques to avoid premature convergence. Prior to this research, no rigorous systematic …

Application Of Cellular Automata To Detection Of Malicious Network Packets, Robert L. Brown

CCE Theses and Dissertations

A problem in computer security is identification of attack signatures in network packets. An attack signature is a pattern of bits that characterizes a particular attack. Because there are many kinds of attacks, there are potentially many attack signatures. Furthermore, attackers may seek to avoid detection by altering the attack mechanism so that the bit pattern presented differs from the known signature. Thus, recognizing attack signatures is a problem in approximate string matching. The time to perform an approximate string match depends upon the length of the string and the number of patterns. For constant string length, the time to …

Validating The Octave Allegro Information Systems Risk Assessment Methodology: A Case Study, Corland Gordon Keating

CCE Theses and Dissertations

An information system (IS) risk assessment is an important part of any successful security management strategy. Risk assessments help organizations to identify mission-critical IS assets and prioritize risk mitigation efforts. Many risk assessment methodologies, however, are complex and can only be completed successfully by highly qualified and experienced security experts. Small-sized organizations, including small-sized colleges and universities, due to their financial constraints and lack of IS security expertise, are challenged to conduct a risk assessment. Therefore, most small-sized colleges and universities do not perform IS risk assessments, which leaves the institution's data vulnerable to security incursions. The negative consequences of …

The Diseños Project: A Geospatial Visualization Of The Environmental History Of California, 1769-1892, Rubén Mendoza

SSGS Faculty Publications and Presentations

No abstract provided.

Risk Assessments For New Bioinvasions For The North Sea Region, Josefin Madjidian

NSBWO

This deliverable is a compilation of summaries of four scientific papers that cover different aspects of risks connected to marine bioinvasions in the North Sea Region. One of the papers looks deeper into global shipping and adds several factors to shipping density to describe hotspots for potential invasions and invasion routes. Two of the papers dig into concerns of regional perspective (the Wadden Sea), one developing a model of a specific kind of water body’s vulnerability to non-native, the other dealing with questions related to when a species should be stated as a non-native and when it has become part …

Pan-Baltic Stakeholders’ Dialogue On Msp : Synthesis Report From Partiseapate Single-Sector Workshops Held In 2013, Anda Ruskele, Ilze Kalvane, Kristina Veidemane, Joanna Przedrzymirska, Angela Schultz-Zehden, Daniel Depellegrin, Nerijus BlažAuskas, Peter Askman, Henrik Nilsson, Jonas Pålsson, Bettina Käppeler, ElīNa Veidemane

PartiSEApate

For a sustainable and integrated planning of the sea space across the Baltic Sea region, planners and stakeholders have to be engaged in holistic, pan-Baltic thinking where the whole Baltic Sea is considered as one ecosystem and one planning space. However MSP related experiences so far shows that interests are often expressed from one sector or one national or regional perspective only. There is a lack of information exchange between the different maritime sectors as well MSP support structures (i.e. data providers and researchers) and spatial planners. And at the same time there is insufficient communication within the sectors at …

Herring : An Analysis Of Spawning Ground Management, Ecological Conditions And Human Impacts In Greifswald Bay, Vistula Lagoon And Hanö Bight., Dariusz P. Fey, Adam M. Lejk, Lena Szymanek, Iwona Psuty, Tomasz Nermer, Friederike Lempe, Harry V. Strehlow, Patrick Polte, Dorothee Moll, Nardine Stybel, Anne Hiller, Michael Van Laak, Henrik Nilsson, Lilitha Pongolini

Books

This book compiles the findings of the HERRING project which was conducted from 2012 until 2015 and part-financed by the EU South Baltic Programme.

The main objective of the HERRING project is to improve the consideration of including herring spawning grounds in coastal management. Herring as a resource recourse would be part of the economic development of coastal areas, and HERRING strongly emphasizes the importance of foster an integrated coastal management in the South Baltic Sea. Three case study areas in Germany, Poland and Sweden serve as the basis of the approach, which can be roughly distinguished in two parts. …

A Non-Erasable Magnetic Memory Based On The Magnetic Permeability, J R. Petrie, K A. Wieland, R A. Burke, G A. Newburgh, J E. Burnette, G A. Fisher, A S. Edelstein

United States Army: Publications

A non-erasable memory based on using differences in the magnetic permeability is demonstrated. The method can potentially store information indefinitely. Initially the high permeability bits were 10–50 μm wide lines of sputtered permalloy (Ni₈₁Fe₁₉) on a glass substrate. In a second writing technique a continuous film of amorphous, high permeability ferromagnetic Metglas (Fe78Si13Bg) was sputtered onto a similar glass substrate. Low permeability, crystalline 50 Jlm wide lines were then written in the film by laser heating. Both types of written media were read by applying an external probe field that is locally modified by the permeability …

The Update, January/February 2014, University Of Northern Iowa. College Of Humanities, Arts And Sciences.

Update

Inside this issue...

-- Name That! App
-- Department News
-- Name That! App
-- School of Music Events
-- UNI Students Write "The World of Kurt Vonnegut"
-- Just Ann: A Musical about the Life and Times of Former Texas Governor, Ann Richards
-- Interpreters Theatre Productions Schedule
-- Student Spotlight: School of Music: Claudia Restrepo:
-- UNI Women's & Gender Studies Presents: CROW Forum
-- Student Spotlight: Mathematics: Benjamin Castle
-- Featured Organization: Construction Management Club
-- Alicia Jessip Receives Diversity Matters Award
-- Coming Up at Theatre UNI: Mauritius & August: Osage County
-- Student Spotlight: Art: …

The Wright Message, 2014-2015, University Of Northern Iowa. Department Of Mathematics.

The Wright Message

Inside this issue:

-- Dear Department Alumni and Friends
-- Around Wright Hall
-- Tenure Stream Faculty 2014 - 2015
-- The 2014 Hari Shankar Lecture
-- New Faculty: Heather Gallivan
-- Faculty Spotlight: Russell Campbell
-- UNI on the March
-- Farewell Tour
-- The Center for Teaching and Learning Mathematics
-- Student Organizations
-- Donor Spotlight: Robert Minch & Mary Bothwick
-- An Interview with Dr. Theron Hitchman
-- Alumni Spotlight: Allysen Lovstuen, Jodi Osthus, & Benjamin Wadsley
-- Addresses by Mathematics Faculty
-- Student Spotlight: Caryn Knight & Emily Stumpff
-- Contributions to an Account - Recognition …

Communiqué: College Of Humanities, Arts & Sciences Alumni Magazine,Volume 3, Winter 2014, University Of Northern Iowa. College Of Humanities, Arts, And Sciences.

Communiqué: College of Humanities, Arts & Sciences Alumni Magazine

Inside this issue:

-- Dean's Message
-- The Oldest Literary Magazine in the Country
-- Even the King Plays Jazz
-- Briefs: Humanities and Fine Arts
-- Inari and a Land Between Two Rivers
-- By the Light
-- The American Way of Eating
-- Kristallnacht: Threads of Memories
-- Finding a Voice
-- CHAS Applause
-- Transitions
-- News in Short
-- 3D Printer: Dimensional Opportunities
-- Americorps: Iowa Energy Efficiency
-- Yager Award
-- Salamanders, Snakes and Turtles, Oh My!
-- Titan: One Man's Search for Answers from a Moon
-- Plant, Grow, Harvest: UNI's Panther Plot
-- …

Structure And Function Of Preq1 Riboswitches, Catherine D. Eichhorn, Mijeong Kang, Juli Feigon

Chemistry Department: Faculty Publications

PreQ₁ riboswitches help regulate the biosynthesis and transport of PreQ₁ (7-aminomethyl-7- deazaguanine), a precursor of the hypermodified guanine nucleotide queuosine (Q), in a number of Firmicutes, Proteobacteria, and Fusobacteria. Queuosine is almost universally found at the wobble position of the anticodon in asparaginyl, tyrosyl, histidyl and aspartyl tRNAs, where it contributes to translational fidelity. Two classes of PreQ₁ riboswitches have been identified (PreQ₁-I and PreQ₁-II), and structures of examples from both classes have been determined. Both classes form H-type pseudoknots upon PreQ₁ binding, each of which has distinct unusual features and modes …

Vibrational Spectroscopy: Disease Diagnostics And Beyond, Hugh Byrne, Kamila Ostrowska, Haq Nawaz, Jennifer Dorney, Aidan Meade, Franck Bonnier, Fiona Lyng

Books/Book Chapters

Summary

This chapter outlines some developments in the applications of vibrational spectroscopy for disease diagnostics and demonstrates how the applications of the spectroscopic techniques can be extended to the analysis and evaluation of disease aetiology and the mechanisms of interaction and the cellular and subcellular responses to, for example chemotherapeutic agents and nanoparticles. The primary emphasis is on Raman spectroscopy, although some examples are based on infrared absorption spectroscopy. The studies presented are chosen to illustrate how a range of multivariate analytical techniques can be employed to maximize the potential benefits of the complex spectral information obtained from tissue or …

Optically Tunable Bound States In The Continuum, Yingyue Boretz, Gonzalo Ordonez, Satoshi Tanaka, Tomio Petrosky

Scholarship and Professional Work - LAS

We demonstrate the existence of tunable bound states in the continuum (BICs) in a one-dimensional quantum wire with two impurities induced by an intense monochromatic radiation field. We find that there is an interesting type of BIC due to the Fano interference between two optical transition channels, in addition to the ordinary BIC due to geometrical interference between electron wave functions emitted by impurities. In both cases the BIC can be achieved by tuning the frequency of the radiation field. Evidence of the BIC can be obtained by observing the absorption rate of a probe photon.

An Empirical Study Of The Impact Of Idioms On Phrase Based Statistical Machine Translation Of English To Brazilian-Portuguese, Giancarlo Salton, Robert J. Ross, John D. Kelleher

Conference papers

This paper describes an experiment to evaluate the impact of idioms on Statis- tical Machine Translation (SMT) process using the language pair English/Brazilian- Portuguese. Our results show that on sen- tences containing idioms a standard SMT system achieves about half the BLEU score of the same system when applied to sentences that do not contain idioms. We also provide a short error analysis and out- line our planned work to overcome this limitation.