Digital Commons Network^™

Aquatic Ecosystems Of The Anthropocene: Limnology And Microbial Ecology Of Mine Pit Lakes, Melanie L. Blanchette, Mark A. Lund

Research outputs 2014 to 2021

Mine pit lakes (‘pit lakes’) are new aquatic ecosystems of the Anthropocene. Potentially hundreds of meters deep, these lakes are prominent in the landscape and in the public consciousness. However, the ecology of pit lakes is underrepresented in the literature. The broad goal of this research was to determine the environmental drivers of pelagic microbe assemblages in Australian coal pit lakes. The overall experimental design was four lakes sampled three times, top and bottom, in 2019. Instrument chains were installed in lakes and measurements of in situ water quality and water samples for metals, metalloids, nutrients and microbe assemblage were …

Wellbeing Of Breastfeeding Women In Australia And New Zealand During The Covid‐19 Pandemic: A Cross‐Sectional Study, Vanessa S. Sakalidis, Alethea Rea, Sharon L. Perrella, Jacki Mceachran, Grace Collis, Jennifer Miraudo, Stuart A. Prosser, Lisa Y. Gibson, Desiree Silva, Donna T. Geddes

Research outputs 2014 to 2021

During the COVID‐19 pandemic, breastfeeding women have experienced restricted access to support, placing them at increased risk of mental health concerns and limited breastfeeding assistance. This study investigated the effect of the pandemic on feeding choices and maternal well-being amongst breastfeeding mothers living in Australian and New Zealand. We conducted a cross-sectional online survey that examined feeding methods, maternal mental wellbeing, worries, challenges, and positive experiences during the pandemic. Most women were exclusively breastfeeding (82%). Partial breastfeeding was associated with perceived low milk supply and longer pregnancy duration during the pandemic. Reduced mental health and wellbeing was associated with lower …

Rgb-D Data-Based Action Recognition: A Review, Muhammad Bilal Shaikh, Douglas Chai

Research outputs 2014 to 2021

Classification of human actions is an ongoing research problem in computer vision. This review is aimed to scope current literature on data fusion and action recognition techniques and to identify gaps and future research direction. Success in producing cost-effective and portable vision-based sensors has dramatically increased the number and size of datasets. The increase in the number of action recognition datasets intersects with advances in deep learning architectures and computational support, both of which offer significant research opportunities. Naturally, each action-data modality—such as RGB, depth, skeleton, and infrared (IR)—has distinct characteristics; therefore, it is important to exploit the value of …

Family, School And Community Educational Partnerships: Development Of A Comprehensive Program For The United Arab Emirates, Sherin M. Abu Shamon

Dissertations

Family, school and community educational partnerships (FSCEPs) contribute significantly to the development and growth of students. In the United Arab Emirates (UAE), this has not received due consideration. This study aimed to evaluate current FSCEPs practices and develop a comprehensive, culturally appropriate program for the UAE. A three-phase mixed method design was used: exploratory sequential design phase, developmental phase using the Delphi Method, and a pilot to test the proposed model. Structured and semi-structured interviews, observation and case study surveys were used to investigate current FSCEPs implementation; barriers and opportunities influencing practices and partnerships, and recommendations from participants. Data was …

Sleep Characteristics And Mood Of Professional Esports Athletes: A Multi-National Study, Sangha Lee, Daniel Bonnar, Brandy Roane, Michael Gradisar, Ian C. Dunican, Michele Lastella, Gemma Maisey, Sooyeon Suh

Research outputs 2014 to 2021

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. Esports is becoming increasingly professionalized, yet research on performance management is remarkably lacking. The present study aimed to investigate the sleep and mood of professional esports athletes. Participants were 17 professional esports athletes from South Korea (N = 8), Australia (N = 4), and the United States (N = 5) who played first person shooter games (mean age 20 ± 3.5 years, 100% male). All participants wore a wrist-activity monitor for 7–14 days and completed subjective sleep and mood questionnaires. Participants had a median total sleep time of 6.8 h and …

Topological Design Of Pentamode Lattice Metamaterials Using A Ground Structure Method, Zuyu Li, Zhen Luo, Lai-Chang Zhang, Chun-Hui Wang

Research outputs 2014 to 2021

Pentamode metamaterials are a new class of artificially engineering three-dimensional lattice composites. There exist a few types of pentamode metamaterials that are dominated by ad hoc design motifs, while a systematic design approach is still missing. This paper will present an efficient topological optimization methodology to discover a series of novel pentamode lattice microarchitectures over a range of effective material properties. Firstly, the necessary and sufficient condition that is required for elasticity constants of pentamode micro lattices with at least elastically orthotropic symmetry is derived. Secondly, a general mathematical formulation for design optimization of such pentamode micro lattices is developed. …

Characterization And Analysis Of Naturally Fractured Gas Reservoirs Based On Stimulated Reservoir Volume And Petro-Physical Parameters, Ali Al-Rubaye, Ahmed Al-Yaseri, Muhammad Ali, Hisham Ben Mahmud

Research outputs 2014 to 2021

© 2021, The Author(s). Fracture is one of the most important geological phenomena that affect the production of hydrocarbon compounds in broken carbonate reservoirs. However, fracture controlling factors must be combined with well data to achieve accurate fracture modeling. Therefore, structural data, drilling data, well flow diagrams, cores data, wells production data, and dynamic reservoir data have been considered here. Finally, by combining the above-mentioned information and through statistical and mathematical methods, the mechanism of fracture creation, general trends, and dominant fracture patterns are determined. These patterns are directly related to the tectonic regime and the stresses governing the region. …

Accessing The Effect Of Renewables On The Wholesale Power Market, Mohammad Nure Alam

Research outputs 2014 to 2021

© 2021, Econjournals. All rights reserved. The purpose of this paper is to examine how rising wind energy generation (in MWh) impact the wholesale power market’s volatility (in SEK) across four bidding regions in Sweden. Prior investigations show that though the increase in electricity production from wind energy lowers the average day-ahead electricity wholesale prices, however, uncertainty and volatility of market price could rise due to wind energy’s intermittent nature. This study results show that Swedish power market experiences higher price volatility in long-run frequency when the generation of wind electricity increases. The reason for this high and volatile electricity …

Detecting Sex-Related Changes To The Metabolome Of A Critically Endangered Freshwater Crayfish During The Mating Season, Emily Lette, Quinton Burnham, Nathan Lawler, Pierre Horwitz, Mary C. Boyce, David I. Broadhurst, Rodney Duffy, Annette Koenders

Research outputs 2014 to 2021

Captive breeding is a vital tool in the conservation of highly endangered species, as it is for the Margaret River hairy marron, Cherax tenuimanus, from the south west of Australia. A close relative, Cherax cainii, has almost completely displaced C. tenuimanus in the wild and is a successful aquaculture species, whereas C. tenuimanus has performed poorly in captivity. We used untargeted liquid chromatography-mass spectrometry to obtain metabolomic profiles of female and male C. tenuimanus held in controlled aquarium conditions during their reproductive period. Using repeated haemolymph sampling we tracked the metabolomic profiles of animals just prior to and …

Experimental Investigation And Comparison Of The Thermal Performance Of Additively And Conventionally Manufactured Heat Exchangers, Ana Vafadar, Ferdinando Guzzomi, Kevin Hayward

Research outputs 2014 to 2021

Air heat exchangers (HXs) are applicable in many industrial sectors because they offer a simple, reliable, and cost-effective cooling system. Additive manufacturing (AM) systems have sig-nificant potential in the construction of high-efficiency, lightweight HXs; however, HXs still mainly rely on conventional manufacturing (CM) systems such as milling, and brazing. This is due to the fact that little is known regarding the effects of AM on the performance of AM fabricated HXs. In this research, three air HXs comprising of a single fin fabricated from stainless steel 316 L using AM and CM methods—i.e., the HXs were fabricated by both direct …

Open Education Exploration Grant: Leah Nillas, Leah Nillas

Ames Library Awards

No abstract provided.

Contribution Of Electronic Theses And Dissertations (Etds) By The Central Universities Of Northeast India To The Shodhganga Project Of Inflibnet: An Evaluative Study, Ankita Saloi

Library Philosophy and Practice (e-journal)

The present study attempts to evaluate the contributions made by the central universities of Northeast India to the open access repository of Shodhganga by INFLIBNET. Out of total 10 central universities of Northeast India, 9 Universities have already signed with MoU of Shodhganga repository and all are contributing their theses and dissertations to this project. North Eastern Hill University (NEHU) made the first initiative to signed MoU with Shodhganga and it has the highest numbers of 2,093 contributions in the repository and ranked 1st among all the central universities of Northeast India. Department of Education of North Eastern Hill University …

Bibliometric Dimensions Of Research In Social Sciences: An Empirical Analysis Of Indian Central Universities, Namita Mahapatra, Jyotshna Sahoo

Library Philosophy and Practice (e-journal)

This paper evaluates the performance of the 14 most productive Central Universities in Social Sciences research. The study is based on the Scopus Indexing database for the period from 2009 to 2018 where the total records retrieved were 7278. Results revealed that journal articles were the most preferred form of publication with 4293 (59%) research papers and the mean annual growth rate of publications was 1.01 while the Mean RGR (Relative Growth Rate) and DT (Doubling Time) were 0.314 and 2.751 respectively. The total number of citations received was 38456 with 5.77 mean citations per paper. Out of the total …

A Bibiliometric Analysis Of The Journal Of Computers In Human Behavior: 1985–2019, Mohsen Jalali

Library Philosophy and Practice (e-journal)

Background: The Journal of Computers in Human Behavior published its first issue in 1985. This study presents a general overview of the journal from 1985 until 2019 using bibliometric indicators to assess its performance.

Methods: The data for this study, dating between 1985 and 2019, was extracted from Scopus database. All the information was exported in CSV format for data analysis. Additionally, Visualization was done by VOS viewer software and applying techniques such as Co-occurrence of keywords, Co-citation of journals, and bibliographic coupling of countries.

Results: The results show that the Journal of Computers in Human Behavior has experienced a …

Chemometrics Using R, David T. Harvey

Chemistry & Biochemistry Faculty Publications

Although you may not yet know what we mean by the term chemometrics, you almost certainly make routine use of chemometric techniques in your classes and labs: reporting an average result for several trials of an experiment or creating a calibration curve and using it to find an analyte’s concentration are two examples of chemometric methods analysis with which you almost certainly are familiar. The goal of this textbook is to provide an introduction to chemometrics suitable for the undergraduate chemistry curriculum at the junior or senior level; indeed, much of this textbook's content, including many of the examples and …

Covert Computation In Staged Self-Assembly: Verification Is Pspace-Complete, David Caballero, Timothy Gomez, Robert Schweller, Tim Wylie

Computer Science Faculty Publications

Staged self-assembly has proven to be a powerful abstract model of self-assembly by modeling laboratory techniques where several nanoscale systems are allowed to assemble separately and then be mixed at a later stage. A fundamental problem in self-assembly is Unique Assembly Verification (UAV), which asks whether a single final assembly is uniquely constructed. This has previously been shown to be Π^{p}₂-hard in staged self-assembly with a constant number of stages, but a more precise complexity classification was left open related to the polynomial hierarchy.
Covert Computation was recently introduced as a way to compute a function while hiding the input …

Majorization And Minimal Energy On Spheres, Oleg R. Musin

School of Mathematical & Statistical Sciences Faculty Publications

In the present paper, we consider the majorization theorem (also known as Karamata's inequality) and the respective minima of the majorization (the so-called M-sets) for f-energy potentials of m-point configurations on the unit sphere. In particular, we show the optimality of regular simplexes, describe some M-sets of small cardinality, define and discuss spherical f-designs.

The Role Of Stereotype Threat In Ethnically Minoritized Students' Science Motivation: A Four-Year Longitudinal Study Of Achievement And Persistence In Stem, Delaram A. Totonchi, Tony Perez, You-Kyung Lee, Kristy A. Robinson, Lisa Linnenbrink-Garcia

STEMPS Faculty Publications

Grounded in expectancy-value and stereotype threat theories, this four-year longitudinal study examined associations between changes in stereotype threat and motivation (self-efficacy, task values, and perceived costs) among 425 undergraduates from racial/ethnic groups typically underrepresented in science, technology, engineering, and mathematics (STEM). Growth analyses indicated that students' stereotype threat and perceived cost of studying science increased during college, whereas science self-efficacy, intrinsic value, and attainment value declined. Parallel growth analyses suggested that higher initial stereotype threat related to a faster decline in attainment value and faster increase in perceived costs throughout college. Higher initial levels and a steeper increase in stereotype …

New Amphibian And Reptile Distribution Records From Eastern South Dakota, Usa, Drew R. Davis

School of Earth, Environmental, & Marine Sciences Faculty Publications

Over recent years, the continued collection of voucher specimens has helped to better document the distributions of South Dakota’s amphibians and reptiles. Despite large increases in our knowledge of these distributions, it remains clear that gaps in our understanding remain. Here, I report 17 new county records of six species of amphibians and reptiles from eastern South Dakota (east of the Missouri River) that are the result of fieldwork conducted in September 2020. The majority of these records are from the northern portions of the James River Lowland, Missouri Coteau, and Drift Plains ecoregions (Bryce et al. 1998), which are …

Importance Of Low-Relief Nursery Habitat For Reef Fishes, Michael A. Dance, Ray R. Rooker, Richard Kline, Antonietta Quigg, Gregory R. Stunz, R. J. David Wells, Kirsten Lara, Jessica Lee, Bobbie Suarez

School of Earth, Environmental, & Marine Sciences Faculty Publications

Coastal restoration projects to mitigate environmental impacts have increased global demand for sand resources. Unfortunately, these resources are often extracted from sand/shell banks on the inner continental shelf, resulting in significant alteration or loss of low-relief reefs in coastal oceans. Experimental reefs (oyster shell, limestone rubble, composite) were deployed in the western Gulf of Mexico to assess their potential value as nurseries for newly settled reef fishes. Occurrence, abundance, and species richness of juvenile fishes were significantly higher on all three types of low-relief reefs compared with unconsolidated sediment. Moreover, reefs served as nursery habitat for a range of reef …

The North Sky And The Otherworld: Journeys Of The Dead In The Neolithic Considered, Frank Prendergast

Book/Book Chapter

The majority of Irish passage tombs (c. 230) predominantly date to the Middle Neolithic (c. 3600–3000 BC). A small number of summit cairns may also contain passage tombs because of their round form, proximity and intervisibility. The island’s passage tombs and related cairns share distinguishing characteristics – elevated siting, visibility and long-range views of distant horizons in varying directions of the compass. This chapter presents the findings of the first scenic analysis of the horizon and views at these sites recorded at an island scale. The method uses measured orientations of horizon sectors related to observed variation in horizon range. …

You Can't Lose A Game If You Don't Play The Game: Exploring The Ethics Of Gamification In Education, Dympna O'Sullivan, Ioannis Stavrakakis, Damian Gordon, Andrea Curley, Brendan Tierney, Emma Murphy, Michael Collins, Anna Becevel

Articles

Gamification has been hailed as a meaningful solution to the perennial challenge of sustaining student attention in class. It uses facets of gameplay in an educational context, including things such as points, leaderboards and badges. These are clearly efforts to make the student experience more entertaining and engaging, but nonetheless, they are also clearly digital nudges and attempts to change the students’ behaviours and attitudes to a specific set of concepts, and in which case they must, and should, be subject to the same ethical scrutiny as any other form of persuasion technique, as they may be unintentionally eroding the …

Hublinked: A Curriculum Mapping Framework For Industry, Paul Doyle, Cathy Ennis, Anna Becevel, Stephane Maag, Radu Dobrin, Mojca Ciglarič, Yunia Choi, Alan Fahey, Deirdre Lillis

Conference Papers

A key aim of HubLinked is to improve the effectiveness of University-Industry linkages between CS faculties and ICT companies. One of the problems identified as core to the Project was to match Learning Outcomes from different curricula with the requirements dictated by the ICT industry with the final aim to enhance students Graduate Skills and employability. Based on agreed core U-I linkage attributes, lower-level curriculum L0s have been designed and reviewed by industry partners. To enable the replication of this process, a tool was designed to make the comparison of graduates' skills from different institutions easily accessible. Using this tool …

Sustainable International Engagement Using A Partner Co-Hosted Teaching Model, Brian Gillespie, Paul Doyle, Zy Jiang, Darryl Humble

Conference Papers

Internationalisation is a significant activity of Higher Education Institutions (HEIs) worldwide and is typically embedded within the aims, ambitions, vision, and strategy of the institution. It incorporates the policies and procedures required to facilitate participation within a global academic environment, and is often considered to be a transformative process that impacts practices in teaching and learning, research, and administration. With formal protocols to establish partnerships, such as memoranda of understanding and articulation agreements, the business of formally creating international partnerships is well defined. However, the motivations, corresponding metrics and key performance indicators (KPIs) of successful partnerships are not as well …

Managing A Mega-Project To Explore And Enhance Careers: Insights From Global Entrepreneurial Talent Management 3, Alison Pearce, Brian Harney, Mark Bailey, Katarzyna Dziewanowska, Janine Bosak, Peter Pease, Brenda Stalker, Dimitra Skoumpopoulou, Paul Doyle, Samuel Clegg, Alireza Shokri, Suzanne Crane, Susan O'Donnell, Rose Quan, Ilsang Ko, Katarina K. Mihelič, Robert Kaše, Matej Černe, Julie Brückner, John Mcmackin, Szu-Hsin Wu, Jose Aldo Valencia Hernandez, Huan Sun

Other

Contemporary careers are changing and face many challenges. This creates a need for innovative cross-cultural and multidisciplinary research. In this chapter, twenty-three participants in a European/South Korean research mega-project provide an overview of their diverse experiences of trans-national, trans-sectoral, and trans-generational work. First, the project’s architects explore the context and rationale in five countries, selection of partners, securing funding and the underpinning principles of ‘strategic entrepreneurship’ and ‘multi-sociation’. Key workstream leaders then outline the project content, including diplomacy in research design, reflecting gender, ensuring impact, capturing learning, communicating to various audiences. Major aspects of Implementation are described: quality management, managing …

Near-Field Propagation Analysis For Vivaldi Antenna Design: Insight Into The Propagation Process For Optimizing The Directivity, Integrity Of Signal Transmission, And Efficiency, Ha Hoang, Matthias John, Patrick Mcevoy, Max Ammann

Articles

Refined optimization of complex curve–linear-shaped radiators, such as traveling-wave Vivaldi antennas, can be achieved by considering simulated near fields to interpret in detail the structural influences of a design. The relationships between the space and time distributions of electromagnetic (EM) energy clusters and the geometric features are revealed with appropriate use of impulse response analysis combined with the multiple signal classification (MUSIC) algorithm. This article reports a deeper approach when applied to the adjustment of the geometric features of a traveling-wave antenna based on an analysis of near-field propagation features.

Attitudes Of Community College Faculty Toward Online Foreign Language Courses, Erika Dale Stevens

Electronic Theses and Dissertations Archive

This study examined the attitudes that Tennessee community college faculty hold toward online foreign language courses and the predictive correlational relationship between those attitudes and advising behaviors of the faculty in regard to online foreign language courses. According to the Reasoned Action Approach, formerly the Theory of Reasoned Action, attitudes, perceived social norm, and perceived behavioral control can be used to determine behavioral intention, which can predict future actions. The data collected from this cross-sectional descriptive and predictive correlational study was analyzed using a hierarchical multiple regression analysis to determine if there is a correlation between faculty attitudes, perceived social …

Exploring The Moderating Role Of Ethnic Identity In The Relation Between Adolescent Stress And Life Satisfaction, Allyson Topps

Electronic Theses and Dissertations Archive

Research in the field of positive psychology has expanded knowledge about factors that contribute to well-being. Less attention has focused on the role of ethnic identity in youths reactions to environmental factors and perceived life experiences. This study examined the potential protective effect of ethnic identity in the relation between adolescents normative social stressors (family and peer) and a minority stressor (perceived discrimination) and life satisfaction. Data was collected via self-report measures from 417 adolescents (age range 14 to 18, 63.0% girls) at a public high school in the mid-south region of the United States. Moderation analyses were conducted in …

Statistical Methods For Patterns And Interconnections Between Variables With Applications In Epigenetics Data, Jiajing Wang

Electronic Theses and Dissertations Archive

Epigenetics is one possible mechanism explaining the disease heritability withoutchanging DNA sequence. DNA methylation (DNAm), as an epigenetic factor with amemory of environmental exposure, may potentially explain the existing missingheritabability. Learning the patterns of DNAm transmission at different CpG sites andstudying the interconnection among the transmitted CpG sites is beneficial to diseaseprediction and prevention. In my dissertation, I will focus on two perspectives to study thetransmission of DNA methylation: clustering and network.The first project describes a nested Bayesian clustering method to identify DNAmethylation (DNAm) sites (CpG sites) such that DNAm is transmitted from onegeneration to the next, and to study …

Measurinig Elementary Teacher Concerns About Integrating English Language Arts And Music In The Common-Core Classroom, Hilary Robb Dow Ward

Electronic Theses and Dissertations Archive

Leadership & Policy Studies