Digital Commons Network^™

A Validation Study For A New Erosion Model To Predict Erosive Airfoil Defouling, Arthur Rudek, David Muckenhaupt, Thomas Zitzmann, Gerald Russ, Barry Duignan

Articles

A new defouling erosion model for Lagrangian particle tracking is used to predict defouling of amor-phous, heterogeneous coatings such as those typically found in aircraft compressors. The main problem description, the mathematical formulation and the underpinning experiment of the model are presented in a previous communication by the authors. In this work, the Ansys CFX implementation of the model is described and an experiment is presented for the validation of the model. Air flows laden with a number of dry-ice particles are observed in an optically accessible stream channel containing a flat plate target. The defouling process of these particles …

Finite Element Simulation Of Head Impacts In Mixed Martial Arts, Stephen Tiernan, Aidan Meagher, David O'Sullivan Dr, Eoin O'Kelly Dr

Articles

This study determined brain stress and strain in an unhelmeted sport and correlated this with concussive injuries. Thirteen MMA athletes were fitted with the MiG2.0 Stanford instrumented mouthguard. The mouthguard records linear acceleration and angular velocity in 6 degrees of freedom. Angular acceleration was calculated by differentiation. All events were video recorded, time stamped and reported impacts confirmed. 298 impacts above 10g were recorded during sparring sessions and 153 impacts in competitive events. The competitive events resulted in five concussions which were diagnosed by a medical doctor. The impact with the highest angular acceleration from each sparring session and competitive …

Concussion And The Severity Of Head Impacts In Mixed Martial Arts, Stephen Tiernan, Aidan Meagher, David O'Sullivan, Eoin O'Keefe, Eoin O'Kelly, Eugene Wallace, Colin Doherty, Mathew Campbell, Yuzhe Liu, August Domel

Articles

Background: Concern about the consequences of head impacts in US football motivated researchers to investigate and develop instrumentation to measure the severity of these impacts. However, the severity of head impacts in unhelmeted sports is largely unknown as miniaturised sensor technology has only recently made it possible to measure these impacts in vivo.

Aim: The objective of this study was to measure the linear and angular head accelerations in impacts in mixed martial arts (MMA), and correlate these with concussive injuries.

Methods: Thirteen MMA fighters were fitted with the Stanford instrumented mouthguard (MiG2.0). The mouthguard records linear acceleration and angular …

Opinion-Mining On Marglish And Devanagari Comments Of Youtube Cookery Channels Using Parametric And Non-Parametric Learning Models, Sonali Shah, Abhishek Kaushik, Shubham Sharma, Janice Shah

Articles

No abstract provided.

Measuring The Mathematical Problem Solving And Procedural Skills Of Students In An Irish Higher Education Institution – A Pilot Study, Fiona Faulkner, Mark Prendergast, Cormac Breen, Michael Carr

Articles

In 2010 the Irish second level mathematics curriculum underwent a period of significant change when a new mathematics curriculum was introduced. Some preliminary research has been carried out into the impact, if any, that this mathematics curriculum is having on students mathematics performance which have suggested that students’ procedural skills are declining year on year however their problem solving skills may have improved (Treacy and Faulkner 2015). Additional research in this area also highlighted that students willingness to engage in problem solving activities may have improved (Prendergast et al 2017). However preliminary analysis on the impact of the reformed mathematics …

Opening The Black Box Of Artificial Intelligence For Clinical Decision Support: A Study Predicting Stroke Outcome, Esra Zihni, Vince Istan Madai, Michelle Livne, Ivana Galinovic, Ahmed A. Khalil, Jochen B. Fiebach, Dietmar Frey

Articles

State-of-the-art machine learning (ML) artificial intelligence methods are increasingly leveraged in clinical predictive modeling to provide clinical decision support systems to physicians. Modern ML approaches such as artificial neural networks (ANNs) and tree boosting often perform better than more traditional methods like logistic regression. On the other hand, these modern methods yield a limited understanding of the resulting predictions. However, in the medical domain, understanding of applied models is essential, in particular, when informing clinical decision support. Thus, in recent years, interpretability methods for modern ML methods have emerged to potentially allow explainable predictions paired with high performance. To our …

A Conceptual Framework For Digital Civics Pedagogy Informed By The Philosophy Of Information, Estelle Clements

Articles

Purpose – The purpose of this paper is to draw on the philosophy of information, specifically the work of Luciano Floridi, to argue that digital civics must fully comprehend the implications of the digital environment, and consequently an informational ontology, to deliver to students an education that will prepare them for full participation as citizens in the infosphere.

Design/methodology/approach – Introducing this philosophy for use in education, the research discusses the ethical implications of ontological change in the digital age; informational organisms and their interconnectivity; and concepts of agency, both organic and artificial in digitally mediated civic interactions and civic …

Irish Agricultural Land Sales And Rental Prices, Frank Harrington

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There have been many commentaries on the Irish agricultural land market, but regrettably for those of us interested in it there have been limited reliable data to test our theories. Given the importance of agriculture to the Irish economy and society, it is surprising how little reliable primary data exists about the Irish agricultural land market. To help address this lack of data the Society of Chartered Surveyors Ireland (SCSI) and Teagasc are publishing a 50-year dataset of agricultural land sales and rentals to complement the SCSI member survey data.

Expectations Of Artificial Intelligence And The Performativity Of Ethics: Implications For Communication Governance, Aphra Kerr, Marguerite Barry, John D. Kelleher

Articles

This article draws on the sociology of expectations to examine the construction of expectations of ‘ethical AI’ and considers the implications of these expectations for communication governance. We first analyse a range of public documents to identify the key actors, mechanisms and issues which structure societal expectations around artificial intelligence (AI) and an emerging discourse on ethics. We then explore expectations of AI and ethics through a survey of members of the public. Finally, we discuss the implications of our findings for the role of AI in communication gover- nance. We find that, despite societal expectations that we can design …

Finding Common Ground For Citizen Empowerment In The Smart City, John D. Kelleher, Aphra Kerr

Articles

Corporate smart city initiatives are just one example of the contemporary culture of surveillance. They rely on extensive information gathering systems and Big Data analysis to predict citizen behaviour and optimise city services. In this paper we argue that many smart city and social media technologies result in a paradox whereby digital inclusion for the purposes of service provision also results in marginalisation and disempowerment of citizens. Drawing upon insights garnered from a digital inclusion workshop conducted in the Galapagos islands, we propose that critically and creatively unpacking the computational techniques embedded in data services is needed as a first …

Use Of Confocal Raman Microscopy To Characterise Ethyl Cyanoacrylate Adhesive Depth Curing, Kevin Raheem, John Cassidy, Tony Betts, Bernard Ryan

Articles

In situ spatial temporal measurement of monomer conversion during adhesive bondline curing remains a challenging area. The aim of this work was to demonstrate the effectiveness of using confocal Raman microscopy in a specially configured experimental set-up, as a versatile tool for measuring monomer concentration changes as a function of both time and adhesive bond depth during ethyl cyanoacrylate polymerisation. This also allowed monitoring of the extent of polymerisation at the adhesive substrate interface independently of the bulk bondline polymerisation region. Key kinetic parameters such as inhibition time tlag, rate of reaction Rmax and extent of reaction [at]max were obtained …

Outstanding Reviewers For Analyst In 2019, Royal Society Of Chemistry

Articles

We would like to take this opportunity to thank all of Analyst's reviewers, and in particular highlight the Outstanding Reviewers for the journal in 2019, as selected by the editorial team for their significant contribution to Analyst. We announce our Outstanding Reviewers annually and each receives a certificate to give recognition for their contribution. The reviewers have been chosen based on the number, timeliness and quality of the reports completed over the last 12 months.

Essential Oils As Additives In Active Food Packaging, Shubham Sharma, Sandra Barkauskaite, Amit Jaiswal, Swarma Jaiswal

Articles

Food packaging can be considered as a passive barrier that protects food from environmental factors such as ultraviolet light, oxygen, water vapour, pressure and heat. It also prolongs the shelf-life of food by protecting from chemical and microbiological contaminants and enables foods to be transported and stored safely. Active packaging (AP) provides the opportunity for interaction between the external environment and food, resulting in extended shelf-life of food. Chemoactive packaging has an impact on the chemical composition of the food product. The application of natural additive such as essential oils in active packaging can be used in the forms of …

Festivals, Public Space And Cultural Inclusion : Public Policy Insights, Bernadette Quinn, Alba Colombo, Kristina Lindström, David Mcgillivray, Andrew Smith

Articles

This paper investigates if and how cities conceive of festivals staged in outdoor public space as a means of achieving cultural inclusion policy objectives. The inclusion of culture in the UN Sustainable Development Goals (SDGs) creates an imperative for cities to scrutinize their approaches to making their cities inclusive. Festivals offer potential in this regard and this study examines the ways that Barcelona, Dublin, Glasgow, Gothenburg and London incorporate festivals into cultural inclusion policies. It relies on secondary research to critically analyse a range of current policy documents, informed by Ball’s ideas about policy contexts: (a) of influence, (b) of …

Digital Age Of Consent And Age Verification: Can They Protect Children?, Liliana Pasquale, Paola Zippo, Cliona Curley, Brian O'Neill, Marina Mongiello

Articles

Children are increasingly accessing social media content through mobile devices. Existing data protection regulations have focused on defining the digital age of consent, in order to limit collection of children’s personal data by organizations. However, children can easily bypass the mechanisms adopted by apps to verify their age, and thereby be exposed to privacy and safety threats. We conducted a study to identify how the top 10 social and communication apps among underage users apply age limits in their Terms of Use. We also assess the robustness of the mechanisms these apps put in place to verify the age of …

Fabrication Of Dielectric Elastomers With Improved Electromechanical Properties Using Silicone Rubber And Walnut Polyphenols Modified Dielectric Particles, Liang Jiang, Yuhao Wang, Shipeng Wen, Yanfen Zhou, Qingdao University, Stephen Jerrams

Articles

In this work, polyphenolic extract from walnut green husks (denoted as walnut polyphenols), which is an abun-dant agroindustrial residue/waste, was used to modify barium titanate (BT) particles in the preparation of sili-cone rubber (SR) based dielectric elastomer (DE) composites with enhanced electromechanical performance.By employing walnut polyphenols modification, the dispersibility of BT particles in the SR matrix and the com-patibility between BT and SR were greatly improved, which resulted in enhanced mechanical performance ofthe DE composites. Dielectric property measurement showed that DE composites containing walnut polyphenolsmodified BT particles (WNBT) had higher dielectric constants and lower dielectric losses than that of DEs …

Madison V. Alabama: An Analysis And Future Considerations, Kaleb Byars

Articles

In 1985, Vernon Madison killed a police officer in Alabama. At trial, an Alabama jury convicted Madison of capital murder, and the trial court sentenced him to death. While awaiting his execution, Madison suffered strokes and was diagnosed with several mental disorders, including vascular dementia. Madison averred these disorders, particularly vascular dementia, rendered him unable to remember committing his crime. Accordingly, Madison petitioned to stay his execution, arguing his disorders rendered him mentally incompetent. Particularly, Madison argued the inability to remember committing the murder prevented him from understanding his conviction. ...

Part I of this Article has introduced the facts …

Cultural Linguistics And Treaty Language: A Modernized Approach To Interpreting Treaty Language To Capture The Tribe's Understanding, Barbara Cosens

Articles

Language is a reflection of a thought world. A worldview that has been shaped by place to describe one's identity in space and time does not equate to species relatedness as a default to know one another. In the legal system of the United States, there is acknowledgement of treaties in colonized lands that there are rights granted from the tribes and not to them, and those rights are land-based. Yet, the Indigenous voice is dead before arrival, before it enters the room of science, justice, academe, or otherwise. The exclusion of Indigenous peoples at the table of knowledge and …

Rucho For Minimalists, Benjamin Plener Cover

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No abstract provided.

Leading Through Collaboration: A Tribute To Distinguished Professor Barbara Cosens, Donald L. Burnett Jr.

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No abstract provided.

The Wild Atlantic Way: A Tourism Journey, Kevin A. Griffin, Gerard Dunne

Articles

The Wild Atlantic Way is possibly the most celebrated, high profile tourism initiative to be launched in Ireland in recent years. It consists of a defined touring route along the western seaboard, one of the most scenic, remote, and sensitive stretches of Irish landscape. This paper presents the principal findings from a survey of 341 tourism and hospitality product providers along the Wild Atlantic Way. The main aim of the research was to investigate the perceived impacts (economic, environmental, and socio-cultural) of this new tourism initiative on the local areas through which it passes. The results paint a generally positive …

Negative Curvature Hollow Core Fiber Based All-Fiber Interferometer And Its Sensing Applications To Temperature And Strain, Dejun Liu, Wei Li, Qiang Wu, Haoyu Zhao, Fengzi Ling, Ke Tian, Changyu Shen, Fangfang Wei, Wei Han, Gerald Farrell, Yuliya Semenova, Pengfei Wang

Articles

Negative curvature hollow core fiber (NCHCF) is a promising candidate for sensing applications; however, research on NCHCF based fiber sensors starts only in the recent two years. In this work, an all-fiber interferometer based on an NCHCF structure is proposed for the first time. The interferometer was fabricated by simple fusion splicing of a short section of an NCHCF between two singlemode fibers (SMFs). Both simulation and experimental results show that multiple modes and modal interferences are excited within the NCHCF structure. Periodic transmission dips with high spectral extinction ratio (up to 30 dB) and wide free spectral range (FSR) …

Nis2 As A Broadband Saturable Absorber For Ultrafast Pulse Lasers, Pengfei Wang, Han Zhang, Yu Yin, Qiuyun Ouyang, Yujin Chen, Elfed Lewis, Gerald Farrell, Masaki Tokurakawa, Sulaiman Wadi Harun, Cong Wang, Shi Li

Articles

Nickel disulfide (NiS2) has recently been found to possess strong nonlinear saturable absorption properties. This feature is highly attractive for nonlinear photonics applications. Ultrafast pulse generation is successfully demonstrated in this article for both Ytterbium- and Erbium-doped fibre lasers using micro-fibre deposited nickel disulfide (NiS2) as a saturable absorber (SA). The fabricated SA device has a modulation depth of 23% at 1.06 μm and 30.8% at 1.55 μm. Stable dissipative soliton operation was achieved at 1064.5 nm with a pulse duration of 11.7 ps and another stable conventional soliton pulse train was also obtained at 1560.2 nm with a pulse …

Intense Mid-Infrared Emission At 3.9 Μm In Ho3+-Doped Zbya Glasses For Potential Use As A Fiber Laser, Haiyan Zhao, Ruicong Wang, Xin Wang, Shijie Jia, Yaxian Fan, Elfed Lewis, Gerald Farrell, Shunbin Wang, Pengfei Wang

Articles

Intense mid-infrared emission at 3.9 µm in Ho3+-doped ZBYA glasses with direct upper laser level (Ho3+ : 5 I5) pumping at a wavelength of 888 nm is reported for the first time, to the best of our knowledge. Spectroscopic parameters were determined using the Judd–Ofelt theory and the measured absorption spectrum. The maximum emission cross section of the Ho3+-doped ZBYA glass is estimated to be 2.7 × 10−21 cm2 at 3906 nm. Additionally, fluorescence spectra and lifetimes of ZBYA glasses with different Ho3+ ion doping concentrations were measured. The results provide theoretical and experimental basis for better selection of rare-earth-doped …

Gender-Related Differences In Flood Risk Perception And Behaviours Among Private Groundwater Users In The Republic Of Ireland, Cillian P. Mcdowell, Luisa Andrade, Eoin O'Neill, Kevin O'Malley, Jean O'Dwyer, Paul Hynds

Articles

Extreme weather events including flooding can have severe personal, infrastructural, and economic consequences, with recent evidence pointing to surface flooding as a pathway for the microbial contamination of private groundwater supplies. There is a pressing need for increasingly focused information and awareness campaigns to highlight the risks posed by extreme weather events and appropriate subsequent post-event actions. To date, little is known about the presence, directionality or magnitude of gender-related differences regarding flood risk awareness and behaviour among private groundwater users, a particularly susceptible sub-population due to an overarching paucity of infrastructural regulation across many regions. The current study investigated …

A Tribute To Professor Monique Lillard, John E. Rumel

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No abstract provided.

The Historical Evolution Of The Methodology For Quantifying Federal Reserved Instream Water Rights For American Indian Tribes, Dylan R. Hedden-Nicely

Articles

From the earliest days of their relationship with the United States, the tribes from the region today referred to as the Northwestern United States have been steadfast in their effort to protect the land, waters, plants, and animals of their traditional homelands. That effort is not coincidental; North America's indigenous people have a singular relationship to the environment they have been a part of for millennia. In particular, they have relied on the streams of their territory for food, fiber, transportation, recreation, cultural, and spiritual sustenance. As a result, through litigation, restoration, and conservation management, tribes have focused on maintaining …

Indigenous Rights And Climate Change: The Influence Of Climate Change On The Quantification Of Reserved Instream Water Rights For American Indian Tribes, Dylan R. Hedden-Nicely

Articles

The people indigenous to the Western portion of the lands now referred to as North America have relied on aquatic species for physical, cultural, and spiritual sustenance for millennia. Such indigenous peoples, referred to in the American legal system as Indian tribes, are entitled to water rights for fish habitat pursuant to the Winters Doctrine, which holds that the federal government impliedly reserved water rights for tribes when reservations were created. Recently, the methodology for quantifying these rights has been the Instream Flow Incremental Methodology (IFIM) and/or one of its major components, the Physical Habitat Simulation Model (PHABSIM). These models …

Leading Through Collaboration: A Tribute To Distinguished Professor Barbara Cosens, Dylan R. Hedden-Nicely

Articles

No abstract provided.

Kidnapping Reconsidered: Courts Merger Tests Inadequately Remedy The Inequities Which Developed From Kidnapping's Sensationalized And Racialized History, Samuel P. Newton

Articles

No abstract provided.