Digital Commons Network^™

Bifurcation And Invariant Manifolds Of The Logistic Competition Model, M. Guzowska, Rafael Luís, Saber Elaydi

Mathematics Faculty Research

In this paper we study a new logistic competition model. We will investigate stability and bifurcation of the model. In particular, we compute the invariant manifolds, including the important center manifolds, and study their bifurcation. Saddle-node and period doubling bifurcation route to chaos is exhibited via numerical simulations.

Efficient Approximation For Security Games With Interval Uncertainty, Chris Kiekintveld, Vladik Kreinovich

Departmental Technical Reports (CS)

There are an increasing number of applications of security games. One of the key challenges for this field going forward is to address the problem of model uncertainty and the robustness of the game-theoretic solutions. Most existing methods for dealing with payoff uncertainty are Bayesian methods which are NP-hard and have difficulty scaling to very large problems. In this work we consider an alternative approach based on interval uncertainty. For a variant of security games with interval uncertainty we introduce a polynomial-time approximation algorithm that can compute very accurate solutions within a given error bound.

Assessment Of Functional Impairment In Human Locomotion: A Fuzzy-Motivated Approach, Murad Alaqtash, Thompson Sarkodie-Gyan, Vladik Kreinovich

Departmental Technical Reports (CS)

Many neurological disorders result in disordered motion. The effects of a disorder can be decrease by an appropriate rehabilitation. To make rehabilitation efficient, we need to monitor the patient and check how well he or she improves. In our previous papers, we proposed a fuzzy-based semi-heuristic method of gauging how well a patient improved. Surprisingly, this semi-heuristic method turned out to be more efficient that we expected. In this paper, we provide a justification for this efficiency.

In the future, it is desirable to combine this fuzzy-assessment approach with results by Alavarez-Alvarez, Trivino, and Cordon who use fuzzy techniques …

Constraint Optimization: From Efficient Computation Of What Can Be Achieved To Efficient Computation Of A Way To Achieve The Corresponding Optimum, Ali Jalal-Kamali, Martine Ceberio, Vladik Kreinovich

Departmental Technical Reports (CS)

In many practically useful cases, we know how to efficiently compute the exact range of a function over given intervals (and, possibly, under additional constraints). In other words, we know how to efficiently compute the minimum and maximum of a given function f(x₁, ..., x_n) on any box. From the practical viewpoint, it is important not only to find the value of the corresponding maximum or minimum, but also to know for what values of the parameters x_i this optimum is attained. We prove a general result: that if we can efficiently compute the optimum, …

Why Bernstein Polynomials Are Better: Fuzzy-Inspired Justification, Jaime Nava, Olga Kosheleva, Vladik Kreinovich

Departmental Technical Reports (CS)

It is well known that an arbitrary continuous function on a bounded set -- e.g., on an interval [a,b] -- can be, with any given accuracy, approximated by a polynomial. Usually, polynomials are described as linear combinations of monomials. It turns out that in many computational problems, it is more efficient to represent a polynomial as Bernstein polynomials -- e.g., for functions of one variable, a linear combination of terms (x-a)^k * (b-x)^n-k. In this paper, we provide a simple fuzzy-based explanation of why Bernstein polynomials are often more efficient, and we show how this informal explanation …

Semi-Heuristic Poverty Measures Used By Economists: Justification Motivated By Fuzzy Techniques, Karen Villaverde, Nagwa Albehery, Tonghui Wang, Vladik Kreinovich

Departmental Technical Reports (CS)

To properly gauge the extent of poverty in a country or in a region, economists use semi-heuristic poverty measures such as the Foster-Greer-Thorbecke (FGT) metric. These measures are used because it was empirically shown that they capture the commonsense meaning of the extent of poverty better than previously proposed measures. However, the fact that these measures are better then a few earlier proposed ones does not necessarily mean that these measures are the best possible; so, it is desirable to look for optimal poverty measures. In this paper, we first use fuzzy techniques to provide a commonsense interpretation of FGT …

In The Beginning Was The Word, And The Word Was Fuzzy, Vladik Kreinovich

Departmental Technical Reports (CS)

No abstract provided.

Powersearch: Augmenting Mobile Phone Search Through Personalization, Xiangyu Liu

Computer Science and Computer Engineering Undergraduate Honors Theses

Cell phone has become a fundamental element of people's life. People use it to call each other, browse websites, send text messages, etc. Among all the functionalities, the most important and frequently used is the search functionality. Based on ComScore, in July 2008, Google was estimated to host 235 millions searches per day. However, unlike the search on desktop, the search on cell phone has one critical constrain: battery. Cell phone performing a normal Google search, the battery drains very fast. The reason is that when sending a query to and fetching the results from Google, cell phone keeps communicating …

Webtailor: Internet Service For Salient And Automatic User Interest Profiles, John Anderson

Computer Science and Computer Engineering Undergraduate Honors Theses

Website personalization systems seek to give users unique, tailored content and experiences on the Internet. A key feature of these systems is a user profile that represents each user in a way that distinguishes them from others. In current personalization systems, the data used to create these profiles is extremely limited, which leads to a host of problems and ineffectual personalization. The main goal of this thesis is to improve these personalization systems by addressing their lack of data and its poor quality, breadth, and depth. This is accomplished by analyzing and classifying the content of each user's Internet browsing …

Western News, Dec. 1, 2011 , Western Michigan University

Western News (1972-2018)

Story highlights: WMU named among nation's 'Best for Vets' schools; Efforts to improve area water quality changes WMU landscape; Team turns theory into observable science; On Campus with Tracey Kauppila.

The Good 5 Cent Cigar (12/1/2011), University Of Rhode Island

The Good 5 Cent Cigar (Student Newspaper Archives)

This is a digitized, downloadable version of the University of Rhode Island school newspaper.

Factors Influencing Travel Order As Proxy For Leadership And Trade-Offs In Activity Budgets In Lactating And Nonlactating African Savanna Elephants, Malgorzata Wisniewska

Masters Theses & Specialist Projects

Nutritional and energetic needs of female mammals depend upon size or reproductive investment and shape individual activity budgets and behavioral patterns. To maximize nutritional and energetic intake females may increase time allocated to foraging or access resources through risk-prone behaviors, represented as aggression or leadership. Conversely, to minimize nutritional and energetic spending females may engage in risk-averse activities such as resting or nonaggressive social interactions. Females with the highest needs should exhibit activities and behaviors that facilitate the greatest nutritional and energetic returns or highest metabolic savings. The propensity for risk-prone behaviors may be greater among older as well as …

A Dis-Ability Perspective On The Stigmatization Of Dissent: Critical Pedagogy, Critical Criminology, And Critical Animal Studies, Anthony John Nocella

Social Science - Dissertations

This intersectional and interdisciplinary social science qualitative dissertation in six chapters is grounded in critical research and theory for the purpose of engaged public service. This project is grounded in three formal disciplines: education, criminology, and peace and conflict studies. Within those three disciplines, this project interweaves newly emerging fields of study together, including critical animal studies, eco-ability, disability studies, environmental justice, transformative justice, green criminology, anarchist studies, and critical criminology, This dissertation adopts three qualitative methodologies; autoethnography, case study, and critical pedagogy. My project uses the animal advocacy movement as its case study. Using a critical pedagogy methodology, I …

Embedded Assessment: Quality Control Vs. Quality Assurance, Carrie L. Steinlicht, Byron G. Garry

ASEE Best Practice Series Presentations

No abstract provided.

Year-End Individual Taxation Report, Annette M. Nellen, E. Cook, K. Fava, E. Gershman, J. Hagy, J. Horn, D. Moore, D. Newman, T. Newman, K. Rubin

Faculty Publications

Several actions by Congress and the IRS aimed to reduce improper claims of the earned income tax credit by increasing preparer penalties and due diligence procedures. * Litigation over restricted stock-based compensation focused on the proper date of the stock's market valuation and the effect of company and SEC restrictions on disposition of the stock. * The Tax Court applied the IRS's recent practice of allowing professional gamblers to deduct ordinary and reasonable nonwagering business expenses over their gambling winnings, overturning a 1951 case holding. * The Tax Court also held that limited partners of a limited partnership who perform …

Leadership Tactics: Enabling Quality Social Exchange And Organizational Citizenship Behavior, Unnikammu Moideenkutty, Stuart M. Schmidt

Organization Management Journal

We examined the relationship between leaders’ positive and negative influence tactics and their subordinates’ organizational citizenship behavior (OCB) directed toward them as well as the quality of the social exchange with them in westernized Middle Eastern organizations. In this study, we used data from 202 supervisor–subordinate dyads in the Sultanate of Oman. Our findings supported the hypothesis that positive leader influence tactics would be positively associated with affirmative social exchange (represented by a combination of leader–member exchange (LMX) and trust) and subordinates’ OCB directed toward supervisors. However, while negative leader influence tactics were related negatively to social exchange, they were …

Wavelength Dependence Of Transverse Mode Coupling With/Without E-Block Of Gan Laser Cavity, K. Lal, G. Chavoor, Xiaomin Jin

Electrical Engineering

Transverse mode wavelength dependence in the gallium nitride (GaN) laser cavity is a new topic. Modal analysis simulations are run to optimize the blue GaN-based laser diode with a wavelength of 400, 430, and 460 nm. It is shown that the optical confinement factor (OCF) has a strong dependence on wavelength of emission and electron-block (e-block) thickness. The OCF can be changed from 4.9% at a 460-nm wavelength to 7.6% at 400 nm, which is a 55% difference. The effect of adding an e-block layer of different widths is also investigated with results showing that an e-block layer can change …

Digital Commons Annual Report, Brad Matthies

Digital Collections Reports

The Digital Commons Annual Report is a document that interested parties may use as a means of monitoring the yearly progress of the Butler University Libraries’ institutional repository.

The Setonian, December 1, 2011, Seton Hall University

2011

No abstract provided.

Overview Of Contrast Data Mining As A Field And Preview Of An Upcoming Book, Guozhu Dong, James Bailey

Kno.e.sis Publications

This report provides an overview of the field of contrast data mining and its applications, and offers a preview of an upcoming book on the topic. The importance of contrasting is discussed and a brief survey is given covering the following topics: general definitions and terminology for contrast patterns, representative contrast pattern mining algorithms, applications of contrast mining for fundamental data mining tasks such as classification and clustering, applications of contrast mining in bioinformatics, medicine, blog analysis, image analysis and subgroup mining, results on contrast based dataset similarity measure, and on analyzing item interaction in contrast patterns, and open research …

Computing Inconsistency Measure Based On Paraconsistent Semantics, Pascal Hitzler, Yue Ma, Guilin Qi

Computer Science and Engineering Faculty Publications

Measuring inconsistency in knowledge bases has been recognized as an important problem in several research areas. Many methods have been proposed to solve this problem and a main class of them is based on some kind of paraconsistent semantics. However, existing methods suffer from two limitations: (i) they are mostly restricted to propositional knowledge bases; (ii) very few of them discuss computational aspects of computing inconsistency measures. In this article, we try to solve these two limitations by exploring algorithms for computing an inconsistency measure of first-order knowledge bases. After introducing a four-valued semantics for first-order logic, we define an …

December 2011, Lori Gwyn, Berva Pool, Aileen Aiello

SWOSU OSP

No abstract provided.

Stability And Classification Performance Of Feature Selection Techniques, Huanjing Wang, Taghi Khoshgoftaar, Qianhui Liang

Computer Science Faculty Publications

Feature selection techniques can be evaluated based on either model performance or the stability (robustness) of the technique. The ideal situation is to choose a feature selec- tion technique that is robust to change, while also ensuring that models built with the selected features perform well. One domain where feature selection is especially important is software defect prediction, where large numbers of met- rics collected from previous software projects are used to help engineers focus their efforts on the most faulty mod- ules. This study presents a comprehensive empirical ex- amination of seven filter-based feature ranking techniques (rankers) applied to …

Faculty Senate Monthly Packet December 2011, Portland State University Faculty Senate

Faculty Senate Monthly Packets

The December 2011 Monthly packet includes the December agenda and appendices and the Faculty Senate minutes and attachments from the meeting held November 2011

Quantifying Computer Network Security, Ian Burchett

Masters Theses & Specialist Projects

Simplifying network security data to the point that it is readily accessible and usable by a wider audience is increasingly becoming important, as networks become larger and security conditions and threats become more dynamic and complex, requiring a broader and more varied security staff makeup. With the need for a simple metric to quantify the security level on a network, this thesis proposes: simplify a network’s security risk level into a simple metric. Methods for this simplification of an entire network’s security level are conducted on several characteristic networks. Identification of computer network port vulnerabilities from NIST’s Network Vulnerability Database …

V.32 | Uup Insight, Theresa. Kist, United University Professions

UUP Insight

Newsletter of the Stony Brook Chapter of the United University Professions | v. : ill. ; 28 cm (original analog pub.),UUP Professional Perspective | Insight | UUP Newsletter | UUP/SB Newsletter

The Role Of University-Industry Collaboration In Regional Economic Development, Ranjana Srevatsan

Dissertations

Innovation has played an important role in the economic development of regions. It is believed that research collaboration between university and industry has a positive influence on regional growth and development. This research explores the role of university-industry collaboration in regional economic development at the metropolitan level. The collaboration between university and industry is examined through two measures: Industrial research funding (IRF) to universities and science and engineering graduates (SEG). The research is divided into two models. The first model studied the combined effect of the metropolitan statistical areas (MSAs) and studied the influence of IRF and SEG on per …

Flood Routing In Natural Channels Using Muskingum Methods, Safa Elbashir

Other resources

The accuracy of flood routing is an important subject for research in hydrology and hydraulics. Accurate information of the flood peak attenuation and the duration of the high water levels obtained by channel routing are of most importance in flood forecasting operations and flood protection works (Subramanya, 2008). This study implements two hydrological methods for channel routing, the basic Muskingum and the constant coefficient Muskingum-Cunge methods on the River Brosna, Co. Offaly in Ireland. Previous researches have reported the simplicity and applicability of these methods on most natural streams within certain limits. These limitations are encountered in the River Brosna …

Social Burden, Social Venture Or Social Responsibility? A Reflection On Csr In China And Csr Strategy Suggestions For Multinational Companies In China, Mantian Wang, Rongming Ren, Guiyi Hu, Hongyong Lu, Ilan Alon

Faculty Publications

Thirty years into its reform and opening, the People’s Republic of China (referred to as China) has become aware of many international practices, including corporate social responsibility (CSR). Yet FOR Chinese enterprises, CSR seems similar to the heavy social burdens of THE state-owned enterprises (SOEs). The “cradle-to-grave” welfare system, notorious but standard in THE planned economy, played a role in the failure of most SOEs to compete with the new, burgeoning private sector. Although laws were promulgated to free the SOEs from their “social burdens,” the new township enterprises set a different example. Some of the latter even profited from …

Voices Newsletter, December 2011, University Of Northern Iowa. Center For Multicultural Education.

Voices Newsletter

Inside this issue:

-- Snapshots in Dim Lighting
-- President Ben Allen
-- President of UNI's Black Student Union
-- La Mission Movie Review
-- Upcoming Events