Digital Commons Network^™

Clustering Of Search Trajectory And Its Application To Parameter Tuning, Linda Lindawati, Hoong Chuin Lau, David Lo

Research Collection School Of Computing and Information Systems

This paper is concerned with automated classification of Combinatorial Optimization Problem instances for instance-specific parameter tuning purpose. We propose the CluPaTra Framework, a generic approach to CLUster instances based on similar PAtterns according to search TRAjectories and apply it on parameter tuning. The key idea is to use the search trajectory as a generic feature for clustering problem instances. The advantage of using search trajectory is that it can be obtained from any local-search based algorithm with small additional computation time. We explore and compare two different search trajectory representations, two sequence alignment techniques (to calculate similarities) as well as …

Multimedia Recommendation: Technology And Techniques, Jialie Shen, Meng Wang, Shuicheng Yan, Peng Cui

Research Collection School Of Computing and Information Systems

In recent years, we have witnessed a rapid growth in the availability of digital multimedia on various application platforms and domains. Consequently, the problem of information overload has become more and more serious. In order to tackle the challenge, various multimedia recommendation technologies have been developed by different research communities (e.g., multimedia systems, information retrieval, machine learning and computer version). Meanwhile, many commercial web systems (e.g., Flick, YouTube, and Last.fm) have successfully applied recommendation techniques to provide users personalized content and services in a convenient and flexible way. When looking back, the information retrieval (IR) community has a long history …

The Pigou-Dalton Principle And The Structure Of Distributive Justice, Matthew D. Adler

Faculty Scholarship

The Pigou-Dalton (PD) principle recommends a non-leaky, non-rank-switching transfer of goods from someone with more goods to someone with less. This Article defends the PD principle as an aspect of distributive justice --- enabling the comparison of two distributions, neither completely equal, as more or less just. It shows how the PD principle flows from a particular view, adumbrated by Thomas Nagel, about the grounding of distributive justice in individuals' "claims." And it criticizes two competing frameworks for thinking about justice that less clearly support the principle: the veil-of-ignorance framework, and Larry Temkin's proposal that fairer distributions are those concerning …

The Biology And Taxonomy Of Head And Body Lice— Implications For Louse-Borne Disease Prevention, Denise L. Bonilla, Lance A. Durden, Marina E. Eremeeva, Gregory A. Dasch

Environmental Health Sciences: Faculty Publications

Sucking lice (Phthiraptera: Anoplura) are obligate blood-feeding ectoparasites of placental mammals including humans. Worldwide, more than 550 species have been described and many are specific to a particular host species of mammal [1]. Three taxa uniquely parasitize humans: the head louse, body louse, and crab (pubic) louse. The body louse, in particular, has epidemiological importance because it is a vector of the causative agents of three important human diseases: epidemic typhus, trench fever, and louse-borne relapsing fever. Since the advent of antibiotics and more effective body louse control measures in the 1940s, these diseases have markedly diminished in incidence. However, …

2013 Fall Commencement, Georgia Southern University

Commencement Programs

No abstract provided.

Casting Minority Gifted Students: The Pedagogical Impact Of Cinema On The Culture Of Schooling, Deborah F. Burnette

College of Graduate Studies: Theses & Dissertations

African American students are significantly underrepresented in gifted education programs. This dissertation creates a space where gifted education, African American students, media literacy, and teacher perceptions intersect in the field of curriculum studies. Media literacy will be utilized to critique popular films by gifted endorsement teacher-students and myself. Due to the low number of states that require pre-service teachers to study gifted characteristics of children it is left up to gifted teacher endorsement programs to train teachers. By using media literacy to examine films in gifted teacher endorsement programs, I assert that the under-representation of African American students in the …

Do Non-Response Follow-Ups Improve Or Reduce Data Quality?: A Review Of The Existing Literature, Kristen Olson

Department of Sociology: Faculty Publications

The paper systematically reviews existing literature on the relationship between the level of effort to recruit a sampled person and the measurement quality of survey data. Hypotheses proposed for this relationship are reviewed. Empirical findings for the relationship between level of effort as measured by paradata (the number of follow-up attempts, refusal conversion and time in the field) and question-specific item non-response rates, aggregate measures of item non-response rates, response accuracy and various measurement errors on attitudinal questions are examined through a qualitative review.

Collecting Paradata For Measurement Error Evaluations, Kristen Olson, Bryan Parkhurst

Department of Sociology: Faculty Publications

Survey researchers and methodologists seek to have new and innovative ways of evaluating the quality of data collected from sample surveys. Paradata, or data collected for free from computerized survey instruments, have increasingly been used in survey methodological work for this purpose (Couper, 1998). One error source that has been studied using paradata is measurement error, or the deviation of a response from a “true” value (Groves, 1989; Biemer and Lyberg, 2003). Although used in psychological literature since the 1980s (see Fazio, 1990, for an early review) and adapted to telephone interviews by Bassili in the early 1990s (Bassili and …

Network Firewall Dynamics And The Subsaturation Stabilization Of Hiv, Bilal Khan, Kirk Dombrowski, Mohamed Saad, Katherine Mclean, Samuel Friedman

Department of Sociology: Faculty Publications

In 2001, Friedman et al. conjectured the existence of a “firewall effect” in which individuals who are infected with HIV, but remain in a state of low infectiousness, serve to prevent the virus from spreading. To evaluate this historical conjecture, we develop a new graph-theoreticmeasure that quantifies the extent towhich Friedman’s firewall hypothesis (FH) holds in a risk network.We compute this new measure across simulated trajectories of a stochastic discrete dynamical system that models a social network of 25,000 individuals engaging in risk acts over a period of 15 years. The model’s parameters are based on analyses of data collected …

Topological And Historical Considerations For Infectious Disease Transmission Among Injecting Drug Users In Bushwick, Brooklyn (Usa), Kirk Dombrowski, Richard Curtis, Samuel Friedman, Bilal Khan

Department of Sociology: Faculty Publications

Recent interest by physicists in social networks and disease transmission factors has prompted debate over the topology of degree distributions in sexual networks. Social network researchers have been critical of “scale-free” Barabasi-Albert approaches, and largely rejected the preferential attachment, “rich-get-richer” assumptions that underlie that model. Instead, research on sexual networks has pointed to the importance of homophily and local sexual norms in dictating degree distributions, and thus disease transmission thresholds. Injecting Drug User (IDU) network topologies may differ from the emerging models of sexual networks, however. Degree distribution analysis of a Brooklyn, NY, IDU network indicates a different topology than …

Engaging Teenagers With Science Through Comics, Amy N. Spiegel, Julia Mcquillan, Peter Halpin, Camillia Matuk, Judy Diamond

Department of Sociology: Faculty Publications

It is increasingly important for all citizens, and especially youth, to understand how viruses impact our health, communities and environment. Particularly for youth less interested in traditional science learning materials, comics may provide a way to engage teenagers with scientific information about viruses. We compared the impacts of different formats of educational materials on teenagers’ knowledge of, attitudes toward, and engagement with information about viruses. High school students (N = 873) were randomly assigned to read either a high quality comic or essay about viruses. Latent class analysis grouped youth into one of four categories that captured a range from …

Can We Build Behavioral Game Theory?, Gale M. Lucas, Mathew D. Mccubbins, Mark Turner

Faculty Scholarship

The way economists and other social scientists model how people make interdependent decisions is through the theory of games. Psychologists and behavioral economists, however, have established many deviations from the predictions of game theory. In response to these findings, a broad movement has arisen to salvage the core of game theory. Extant models of interdependent decision-making try to improve their explanatory domain by adding some corrective terms or limits. We will make the argument that this approach is misguided. For this approach to work, the deviations would have to be consistent. Drawing in part on our experimental results, we will …

Happiness Surveys And Public Policy: What’S The Use?, Matthew D. Adler

Faculty Scholarship

This Article provides a comprehensive, critical overview of proposals to use happiness surveys for steering public policy. Happiness or “subjective well-being” surveys ask individuals to rate their present happiness, life-satisfaction, affective state, etc. A massive literature now engages in such surveys or correlates survey responses with individual attributes. And, increasingly, scholars argue for the policy relevance of happiness data: in particular, as a basis for calculating aggregates such as “gross national happiness,” or for calculating monetary equivalents for non-market goods based on coefficients in a happiness equation.

But is individual well-being equivalent to happiness? The happiness literature tends to blur …

College Student Pathways To The Stem Disciplines, Mark Engberg, Gregory C. Wolniak

Education: School of Education Faculty Publications and Other Works

Background/Context: As concerns mount about the shortage of students entering science, technology, engineering, and math (STEM) careers, policy makers throughout the United States are contemplating strategies to maintain and enhance our nation's economic vitality and international competitiveness. Within this policy and program environment, researchers have focused considerable attention on improving STEM education at different stages of the educational pipeline, yet we lack evidence on how resources from one educational setting may influence outcomes in a successive educational setting. Purpose/Objective/Research Question/Focus: The purpose of the study is to examine individual- and school-level factors that influence students' pathways to the STEM fields …

Teacher Role Breadth And Its Relationship To Student-Reported Teacher Support, Kate L. Phillippo, Susan Stone

Education: School of Education Faculty Publications and Other Works

This study capitalizes on a unique, nested data set comprised of students ("n" = 531) and teachers ("n" = 45) in three high schools that explicitly incorporated student support roles into teachers' job descriptions. Drawing from research on student-teacher relationships, teacher effects on student outcomes, and role theory, this study explored correlates of teachers' role definition. In particular, it considered role breadth, or the degree to which teachers defined their roles to include the provision of various forms of social and emotional support to students. We hypothesized that teachers' role breadth would relate to student perceptions of teacher support and …

Container Shipping Risk Management: A Case Study Of Taiwan Container Shipping Industry, Chia-Hsun Chang

Plymouth Business School Theses

Whilst container shipping has become increasingly important over the past few decades due to its obvious advantages, container shipping companies have faced various risks from different sources in their operations. Systematic academic studies on this topic are few; and in light of this, this study aims to systematically explore and analyse the risks in container shipping operations and to examine the applicable risk mitigation strategies in a logistics perspective, including information flow, physical flow, and payment flow. This thesis uses Taiwan container shipping industry as a case study, and borrows four steps of risk management as the main method, which …

Fluid Fractals: Leadership At The Apex Of Local Authority In England, Smita Tripathi

Plymouth Business School Theses

Purpose: This thesis aims to explore the complex phenomenon of leadership at the apex of democratically elected local authority in England. It makes sense of the social construction of leadership as perceived and enacted by senior appointed officers (hereinafter officers), elected members (hereinafter members) and key stakeholders – the voices from the apex and their understandings and interpretations. Design/methodology/approach: The thesis examines leadership literature through the paradigm of constructivism-interpretivism, making sense of transcripts of the semi-structured interviews with officers, members and stakeholders engaged in local authority work. Dominant/mainstream theories of leadership offer limited help to understanding the relational, processual constructions …

Election Data Visualisation, Elena Long

Plymouth Business School Theses

Visualisations of election data produced by the mass media, other organisations and even individuals are becoming increasingly available across a wide variety of platforms and in many different forms. As more data become available digitally and as improvements to computer hardware and software are made, these visualisations have become more ambitious in scope and more user-friendly. Research has shown that visualising data is an extremely powerful method of communicating information to specialists and non-specialists alike. This amounts to a democratisation of access to political and electoral data. To some extent political science lags behind the progress that has been made …

Rural Non-Farm Livelihood Diversification And Poverty Reduction In Nigeria, Paul Agu Igwe

Plymouth Business School Theses

The aim of this research is to provide analysis of the rural non-farm sector in Nigeria by investigating inter-linkages between farm and non-farm activities. By critical analysis using quantitative and qualitative research methods to investigate farm and non-farm sectors, the research attempts to reveal the complex linkages between these activities undertaken by rural households. The analysis employs household surveys aimed at collecting primary data undertaken to investigate various aspects of rural livelihoods including sources of income, employment, diversification and determinants of household income. The research provides analysis of Rural Micro and Small Enterprises (RMSEs) in the non-farm sector. It investigates …

Optimising Supply Chain Performance Via Information Sharing And Coordinated Management, Wei Xu

Plymouth Business School Theses

Supply chain management has attracted much attention in the last decade. There has been a noticeable shift from a traditional individual organisation-based management to an integrated management across the supply chain network since the end of the last century. The shift contributes to better decision making in the supply chain context, as it is necessary for a company to cooperate with other supply chain members by utilising relevant information such as inventory, demand and resource capacity. In other words, information sharing and coordinated management are essential mechanisms to improve supply chain performance. Supply chains may differ significantly in terms of …

“Read The Text, As If!” The Reading Retention Strategy, Kent Divoll, Sandra Browning

International Journal for the Scholarship of Teaching & Learning

Students do not always read what is expected in college courses (Berry, Cook, Hill, & Stevens, 2010; Phillips & Phillips, 2007; Sikorski et al., 2002) or they read to cram for an exam or quiz (Clump, Bauer, & Bradley, 2004). The Reading Retention Strategy (RRS) is designed to motivate students to read and assist students in understanding the main points of the readings. The RRS includes students interacting with peers to reinforce and check their responses to prompting questions. Participants included two education professors and their 54 students enrolled in two sections of a four week summer course. The results …

Minority Women In Stem: A Valuable Resource In The Global Economy, Ezella Mcpherson, Diane R. Fuselier-Thompson

Journal of the International Association for the Study of the Global Achievement Gap (Archived)

While there is an expected demographic shift of the ethnic minority population in the United States to become the majority population by 2020, few minority women successfully attain baccalaureate degrees in science, technology, engineering, and mathematical (STEM) fields. To address this gap, this article employs critical race feminism and narrative analysis methods to examine minority women’s challenges while pursuing undergraduate STEM degrees. Findings suggest that limited access to the field, isolation and alienation, and affordability create barriers that result in many minority women leaving STEM majors. Implications for practice include targeted institutional efforts to increase recruitment and retention efforts towards …

Synthesis, Characterization, And Luminescence Of Zinc(Ii) And Cadmium(Ii) Coordination Complexes: [Zn(Phen)_2(Ch_3coo)](Clo_4), [Zn(Bpy)_2(Clo_4)](Clo_4), And [Cd(Phen)_2(No_3)_2], İbrahi̇m Kani̇, Mehmet Kurtça

Turkish Journal of Chemistry

Three metal complexes, [Zn(phen)_2(CH_3COO)](ClO_4) (1), [Zn(bpy)_2(ClO_4)](ClO_4) (2), and [Cd(phen)_2 (NO_3)_2] (3) (phen = 1,10-phenanthroline, bpy = 2,2 {Abedini, 2005 #222} -bipyridine), were synthesized and their structures were determined by single-crystal X-ray diffraction analyses. In 1, Zn(II) is coordinated by 4 nitrogen atoms from 2 phen molecules and 2 oxygen atoms from 1 acetato to form an octahedral configuration. In 2, Zn(II) has pentacoordination geometry with chelating 2 bpy and 1 perchlorato ion. In 3, phen and NO_3^- serve as bidentate ligands coordinating to Cd(II) through their nitrogen and oxygen atoms to form 8 coordination. Three-dimensional frameworks of complexes 1--3 are …

Determination Of Pb(Ii) In Natural Water With Dibromo-P-Methyl-Sulfonazo By The Light-Absorption Ratio Variation Approach, Jie Zhang

Turkish Journal of Chemistry

Pb ions can react sensitively with dibromo-p-methylsulfonazo (DMSA) to form a blue complex, whose absorption is maximal at 630 nm. By means of the light-absorption ratio variation approach (LARVA), the direct determination of Pb was developed in 0.3 M nitric acid and plots of \Delta A_r^{-1} vs. c_{Pb}^{-1} are linear where \Delta A_r is the light-absorption ratio variation and c_{Pb} Pb(II) concentration is between 0 and 5.0 mg/L. The limit of detection (3\sigma) of Pb(II) is only 0.02 mg/L. This method was applied to direct analysis of natural water with satisfactory results.

An Evaluation Of A Nursing Leadership Simulation Experience Using Multitrait Multimethod Matrix, Toby Embry

Doctoral Dissertations

The MTMM approach was used to evaluate construct validity of three nursing leadership traits (prioritization, delegation, and patient care management) across four assessment methods (multiple-choice tests--MCT, oral questioning-- OQ, high fidelity--HFS, and low fidelity simulation--LFS). Using a correlational descriptive design a 21-item MCT exam, a 21-item oral question instrument, a patient care HFS, and three LFS stations were embedded into a two hour objectively structured clinical examination (OSCE) assessment environment whose aim was to compare traditional assessment methods (MCT and OQ) in nursing education to burgeoning assessment methods (HFS and LFS). Generated scores from 137 senior-level baccalaureate nursing students at …

Thermo-Elasto-Plastic Behavior Of Biaxially Loaded Steel Beam-Columns Inducing Those From World Trade Center Towers, Yanhong Zhao

Civil & Environmental Engineering Theses & Dissertations

An experimental and theoretical investigation into the behavior of biaxially loaded steel beam-columns is conducted including the effects of high temperature. Systems of materially nonlinear differential equations of beam-column equilibrium are first formulated for both ambient and high temperature conditions. An iterative finite integral procedure is formulated and programmed to solve the governing differential equations. To check the validity of the theoretically predicted behavior and strength of the beam-columns, a series of forty-two laboratory tests are conducted at both ambient and high temperature up to 950°F. Upon achieving a good agreement between the predicted beam-column behavior and that observed in …

Embodied Conflict Resolution: Resurrecting Roleplay-Based Curricula Through Dance, Nadja Alexander, Michelle Lebaron

All Faculty Publications

Moving on from the authors’ seminal 2009 critique of the overuse of role-plays in negotiation teaching, "Death of the Role-Play" (chapter 13 in Rethinking Negotiation Teaching), Alexander and LeBaron have taken the rapidly increasing enthusiasm for experiential learning in a new direction: multiple intelligences. Their particular interest is in a use of experiential learning that focuses on kinesthetic intelligence, employing actual physical movement, particularly dance, to unlock creativity in other mental domains, as well as to encourage authentic participation by people whose skills are not primarily verbal or mathematical. Those who may be inclined to be skeptical should note that …

Out On The Land: Income, Subsistence Activities, And Food Sharing Networks In Nain, Labrador, Kirk Dombrowski, Emily Channell, Bilal Khan, Joshua Moses, Evan Misshula

Publications and Research

In recent Inuit ethnography, a major concern has been how and to what extent contemporary Inuit participate in and depend on subsistence activities, particularly in the context of increasing wage employment and growing participation in the cash economy. This paper provides an analysis of these activities in the predominately Inuit community of Nain, Labrador. Using social network data and demographic information collected between January and June 2010, we examine the interconnections between subsistence activities—obtaining “country food” through activities such as hunting, fishing, and collecting—with access to the means of obtaining subsistence resources (such as snow mobiles, cabins, and boats), employment …

Proximity Heating Effects In Power Cables, Jonathan Blackledge, Eugene Coyle, Kevin O'Connell

Articles

Researchers at Technological University Dublin (DIT) have developed a new modelling system for evaluating the two and three dimensional heating effects in power cables due to harmonic distortion and proximity field effects.

Three Dimensional Simulation Of The Radiation Field Patterns Generated By An Integrated Antenna, Jonathan Blackledge, Bazar Babajanov

Articles

Simulating the electromagnetic field patterns generated by integrated antennas uses in mobile phones, for example, is fundamental to understanding their transmission characteristics and thereby engineering designs that optimize the directional properties of electromagnetic propagation. Modern integrated antennas have complex three-dimensional geometry designed to optimize their performance in terms of their multi-band and multi -modal attributes. This geometry, coupled with their close proximity to other component of the device (such as the battery and Printed Circuit Board, for example) produce complex field patterns due to the scattering of the electric (and magnetic) field within a spatial domain that is the same …