Digital Commons Network^™

Predictors Of Marine Genetic Structure In The Indo-Australian Archipelago, Kathryn M. Mcmahon, Udhi Eko Hernawan

Research Datasets

This is the dataset extracted from 101 publications on 99 marine species from eight taxonomic groups in the Indo Australian Archipelago. Data extracted includes measures of genetic structure and the potential predictors.

Hydrogen Wettability Of Sandstone Reservoirs, Stefan Iglauer, Muhammad Ali, Alireza Keshavarz

Research Datasets

Data set include the data for contact angle data as a function of pressure, temperature and stearic acid concentration in H₂. One exemplary figure is also provided for contact angle measurement in H₂ atmosphere.

Ecu-Ioht, Mohiuddin Ahmed, Surender Byreddy, Anush Nutakki, Leslie F. Sikos, Paul Haskell-Dowland

Research Datasets

In recent times, cyberattacks on Internet of Health Things (IoHT) have continuously been growing, and so it is important to develop robust countermeasures. However, there is a lack of publicly available datasets reflecting cyberattacks on IoHT, mainly due to privacy concerns. To strengthen the cyber security of IoHT, we have developed the dataset, named ECU-IoHT, that is built upon an IoHT environment having different attacks performed that exploit various vulnerabilities. This dataset was designed to help the healthcare security community in analyzing attack behaviour and developing robust countermeasures. To the best of our knowledge, no other publicly available datasets have …

Modelling Mycorrhizal Fungi Dispersal By The Mycophagous Swamp Wallaby (Wallabia Bicolor) [Dataset], Melissa Danks, Natalie Simpson, Todd F. Elliot, C.E. Timothy Paine, Karl Vernes

Research Datasets

Despite the importance of mammal-fungal interactions, tools to estimate the mammal-assisted dispersal distances of fungi are lacking. Many mammals actively consume fungal fruiting bodies, the spores of which remain viable after passage through their digestive tract. Many of these fungi form symbiotic relationships with trees and provide an array of other key ecosystem functions. We present a flexible, general model to predict the distance a mycophagous mammal would disperse fungal spores. We modelled the probability of spore dispersal by combining animal movement data from GPS-telemetry with data on spore gut-retention time. We test this model using an exemplar generalist mycophagist, …

Human Impact Overrides Bioclimatic Drivers Of Red Fox Home Range Size Globally, Michael Main, Robert Davis, David Blake, Harriet Mills, Tim Doherty

Research Datasets

Aim Identifying the variables that influence animal home range size is important for understanding the biological requirements of individuals and their social interactions. Given their often broad distributions, carnivores are model organisms for studying range-wide determinants of home range size. Here we test predictions about environmental determinants of home range size for one of the world’s most widely distributed carnivores, the red fox (Vulpes vulpes).

Location Global

Methods We compiled a database of 70 mean home range estimates from 62 studies and four continents, which we analysed according to site-based temperature, precipitation, environmental productivity and human influence …

Hybrid Zone Barriers Comparative Data Set, David L. Field

Research Datasets

Many recent studies have addressed the mechanisms operating during the early stages of speciation, but surprisingly few studies have tested theoretical predictions on the evolution of strong reproductive isolation (RI). To help address this gap, we first undertook a quantitative review of the hybrid zone literature for flowering plants in relation to reproductive barriers. Then, using Populus as an exemplary model group, we analysed genome-wide variation for phylogenetic tree topologies in both early- and late-stage speciation taxa to determine how these patterns may be related to the genomic architecture of RI. Our plant literature survey revealed variation in barrier complexity …

Floral Display And Habitat Fragmentation: Effects On The Reproductive Success Of The Threatened Mass-Flowering Conospermum Undulatum (Proteaceae), Nicola Delnevo, Eddie Van Etten, Margaret Byrne, William Stock

Research Datasets

1. Fragmentation of natural vegetation is currently one of the largest threats to plant populations and their interactions with pollinators. Plant reproductive susceptibility to habitat fragmentation has been investigated in many species; however, the response of wild mass-flowering species is poorly known, with research limited to mainly boreal plant species.

2. Here we studied twelve remnant populations of the threatened mass-flowering shrub Conospermum undulatum in the southwest Australian biodiversity hotspot, each presenting different population size, level of isolation, and floral display. We assessed the impact of fragmentation on: 1) fruit and seed production; and 2) seed germination. To gain a …

A Geospatiotemporal And Causal Inference Epidemiological Exploration Of Substance And Cannabinoid Exposure As Drivers Of Rising Us Pediatric Cancer Rates, Albert Stuart Reece

Research Datasets

Background: Age-adjusted US total pediatric cancer incidence rates (TPCIR) rose 49% 1975-2015 for unknown reasons. Prenatal cannabis exposure has been linked with several pediatric cancers which together comprise the majority of pediatric cancer types. We investigated whether cannabis use was related spatiotemporally and causally to TPCIR.

Methods: State-based age-adjusted TPCIR data was taken from the CDC Surveillance, Epidemiology and End Results cancer database 2003-2017. Drug exposure was taken from the nationally-representative National Survey of Drug Use and Health, response rate 74.1%. Drugs included were: tobacco, alcohol, cannabis, opioid analgesics and cocaine. This was supplemented by cannabinoid concentration data from the …

Contemporary Epidemiology Of Rising Atrial Septal Defect Trends Across Usa 1991-2016: A Combined Ecological Geotemporospatial And Causal Inferential Study, Albert Stuart Reece

Research Datasets

Background: Cardiovascular anomalies are the largest group of congenital anomalies and the major cause of death in young children, with a range of data linking rising atrial septal defect incidence (ASDI) with prenatal cannabis exposure. Objectives / Hypotheses. Is cannabis associated with ASDI in USA? Is this relationship causal?

Methods: Geospatiotemporal cohort study, 1991-2016. Census populations of adults, babies, congenital anomalies, income and ethnicity. Drug exposure data on cigarettes, alcohol abuse, past month cannabis use, analgesia abuse and cocaine taken from National Survey of Drug Use and Health (78.9% response rate). Cannabinoid concentrations from Drug Enforcement Agency. Inverse probability weighted …

Broad Spectrum Epidemiological Contribution Of Cannabis, Tobacco And Alcohol To The Teratological Profile Of Northern New South Wales: Geospatial And Causal Inference Analysis, Albert Stuart Reece

Research Datasets

Background: Whilst cannabis commercialization is occurring rapidly guided by highly individualistic public narratives, evidence that all congenital anomalies (CA) increase alongside cannabis use in Canada, a link with 21 CA’s in Hawaii, and rising CA’s in Colorado indicate that transgenerational effects can be significant and impact public health. It was therefore important to study Northern New South Wales (NNSW) a known cannabis use centre.

Methods: Design: Cohort. 2008-2015. Setting: NNSW and Queensland (QLD), Australia. Participants. Whole populations. Exposures. Tobacco, Risky Alcohol, Annual cannabis. Source: National Drug Strategy Household Surveys 2010, 2013. Main Outcomes. CA Rates. NNSW-QLD comparisons. Geospatial and causal …

Co-Occurrence Across Time And Space Of Drug- And Cannabinoid- Exposure And Adverse Mental Health Outcomes In The National Survey Of Drug Use And Health Dataset 2: Combined Ecological Geotemporospatial And Causal Inference Analysis, Albert Stuart Reece

Research Datasets

Background: Whilst many studies have linked increased drug and cannabis exposure to adverse mental health (MH) outcomes their effects on whole populations and geotemporospatial relationships are not well understood.

Objectives: Determine: (1) if cannabis use is associated with major MH outcomes ascross space and time, (2) if such impacts are robust to multivariable adjustment and (3) if the relationship is causal.

Methods: Ecological cohort study of National Survey of Drug Use and Health (NSDUH) geographically-linked substate-shapefiles 2010-2012 and 2014-2016 supplemented by five-year US American Community Survey. Drugs: cigarettes, alcohol abuse, last-month cannabis use and last-year cocaine use. MH: any mental …

Plans To Pedagogy Activity Report 2019: What Impact Does ‘Innovative’ Furniture Have On Student Engagement And Teacher Practices?, Julia Morris, Wesley Imms

Research outputs 2014 to 2021

Phase One of this project, conducted during the 2019 academic year, used an A-B-A withdrawal design to rotate (terms 2, 3 and 4) the furniture in five primary school classrooms1 from ‘innovative’ to ‘traditional’ furniture arrangements2. Three-weekly repeated measures were taken across the year of (1) student perceptions of their cognitive and behavioural engagement, (2) teacher actions in these classrooms, and (3) photographs by students of their preferred furniture, with annotations explaining this preference. Once-a-term measures included (4) teachers completing a Teacher Mind Frames survey, and (5) teachers participating in a structured interview with the researchers...

‘Coronated’ Consumption In The Viral Market, Soonkwan Hong

Michigan Tech Publications, Part 1

The universal exposure to the virus has disrupted institutions, redefined values, and reshaped systems, including the market. Idling, uncertainty, and liquidity encapsulate the ever-precarious individual lives and the reflexive socio-politico-cultural changes. These conditions and consequences nonetheless create paradoxical opportunities in the viral market. The new meaning of connectivity that promotes high-viscosity relationships and high-visibility identities will transform the market to better acknowledge and support humans and the new sociality.

How To Achieve Efficiency And Accuracy In Discrete Element Simulation Of Asphalt Mixture: A Drf-Based Equivalent Model For Asphalt Sand Mortar, Yu Liu, Peifeng Su, Miaomiao Li, Hui Yao, Junfu Liu, Mei Xu, Xiaodong Zhou, Zhanping You

Michigan Tech Publications, Part 1

The clump-based discrete element model is one of the asphalt mixture simulation methods, which has the potential to not only predict mixture performance but also simulate particle movement during compaction, transporting, and other situations. However, modelling of asphalt sand mortar in this method remains to be a problem due to computing capacity. Larger-sized balls (generally 2.0-2.36 mm) were usually used to model the smaller particles and asphalt binder, but this replacement may result in the mixture's unrealistic volumetric features. More specifically, replacing original elements with equal volume but larger size particles will increase in buck volume and then different particle …

Use Agreements And Economic Performance Of U.S. Airports, Fecri Karanki

Transportation Logistics and Finance

In the U.S., airport use agreements are developed based on three common rate-setting approaches: the residual, compensatory, and hybrid methods. Under a residual agreement, the financial risk of the host airport is borne by the signatory airlines, and in return, the signatory airlines pay reduced user fees. Under a compensatory agreement, however, the airport bears its own financial risks and offers no reduced user fees to airlines. A hybrid agreement combines the features of residual and compensatory agreements. Under a hybrid agreement, the airport usually bears its own financial risks in terminal operations while the signatory airlines take over the …

Impact Of Public Transit And Walkability On Quality Of Life And Equity Analysis In Terms Of Access To Non-Work Amenities In The United States, Muhammad Asif Khan

Transportation Logistics and Finance

The past literature suggest that transportation can impact quality of life (QOL) both directly and indirectly. The first part of this dissertation attempted to comprehensively evaluate the impact of transportation (specifically public transit, and walkability) along with physical built environment, and sociodemographic indicators on community QOL, and overall life satisfaction (OLS) of an individual living in his community. The study used an advanced technique of structural equation modeling (SEM) to evaluate the impact of these factors on community QOL and individual’s OLS. The study results revealed that physical built environment, public transit need for a community, perceived public transit importance …

Three Essays On Shared Micromobility, Ali Rahim-Taleqani

Transportation Logistics and Finance

Shared micromobility defines as the shared use of light and low-speed vehicles such as bike and scooter in which users have short-term access on an as-needed basis. As shared micromobility, as one of the most viable and sustainable modes of transportation, has emerged in the U.S. over the last decade., understanding different aspects of these modes of transportation help decision-makers and stakeholders to have better insights into the problems related to these transportation options. Designing efficient and effective shared micromobility programs improves overall system performance, enhances accessibility, and is essential to increase ridership and benefit commuters. This dissertation aims to …