Digital Commons Network^™

Non Invasive Investigation Of Sensorimotor Control For Future Development Of Brain-Machine-Interface (Bmi), Leo Tomasevic

School of Engineering, Computing and Mathematics Theses

My thesis focuses on describing novel functional connectivity properties of the sensorimotor system that are of potential interest in the field of brain-machine interface. In particular, I have investigated how the connectivity changes as a consequence of either pathologic conditions or spontaneous fluctuations of the brain's internal state. An ad-hoc electronic device has been developed to implement the appropriate experimental settings. First, the functional communication among sensorimotor primary nodes was investigated in multiple sclerosis patients afflicted by persistent fatigue. I selected this condition, for which there is no effective pharmacological treatment, since existing literature links this type of fatigue to …

Rogue Waves In Opposite Currents: An Experimental Study On Deterministic And Stochastic Wave Trains, A Toffoli, T Waseda, H Houtani, L Cavaleri, Dm Greaves, M Onorato

School of Engineering, Computing and Mathematics

No abstract provided.

Observations Of Bedforms On A Dissipative Macrotidal Beach, Jon Miles, Antony Thorpe, Paul Russell, Gerd Masselink

School of Engineering, Computing and Mathematics

No abstract provided.

Combining Motion Analysis And Microfluidics--A Novel Approach For Detecting Whole-Animal Responses To Test Substances., Tabitha S. Rudin-Bitterli, Oliver Tills, John I. Spicer, Phil F. Culverhouse, Eric M. Wielhouwer, Michael K. Richardson, Simon D. Rundle

School of Biological and Marine Sciences

Small, early life stages, such as zebrafish embryos are increasingly used to assess the biological effects of chemical compounds in vivo. However, behavioural screens of such organisms are challenging in terms of both data collection (culture techniques, drug delivery and imaging) and data evaluation (very large data sets), restricting the use of high throughput systems compared to in vitro assays. Here, we combine the use of a microfluidic flow-through culture system, or BioWell plate, with a novel motion analysis technique, (sparse optic flow - SOF) followed by spectral analysis (discrete Fourier transformation - DFT), as a first step towards automating …

Minimal Effects Of Waterborne Exposure To Single-Walled Carbon Nanotubes On Behaviour And Physiology Of Juvenile Rainbow Trout (Oncorhynchus Mykiss)., D Boyle, Je Fox, Jm Akerman, Ka Sloman, Tb Henry, Rd Handy

School of Biological and Marine Sciences

Fish behaviours are often considered to be sensitive endpoints of waterborne contaminants, but little attention has been given to engineered nanomaterials. The present study aimed to determine the locomotor and social behaviours of rainbow trout (Oncorhynchus mykiss) during waterborne exposure to single-walled carbon nanotubes (SWCNTs), and to ascertain the physiological basis for any observed effects. Dispersed stock suspensions of SWCNTs were prepared by stirring in sodium dodecyl sulphate (SDS), an anionic surfactant, on an equal w/w basis. Trout were exposed to control (no SWCNT or SDS), 0.25 mg L(-1) SDS (dispersant control), or 0.25 mg L(-1) of SWCNT for 10 …

On The Electrodynamics Of Neural Networks, S Rodrigues, Pb Graben

School of Engineering, Computing and Mathematics

We present a microscopic approach for the coupling of cortical activity, as resulting from proper dipole currents of pyramidal neurons, to the electromagnetic field in extracellular fluid in presence of diffusion and Ohmic conduction. Starting from a full-fledged three-compartment model of a single pyramidal neuron, including shunting and dendritic propagation, we derive an observation model for dendritic dipole currents in extracellular space and thereby for the dendritic field potential that contributes to the local field potential of a neural population. Under reasonable simplifications, we then derive a leaky integrate-and-fire model for the dynamics of a neural network, which facilitates comparison …

Hydroxyapatite, Fluor-Hydroxyapatite And Fluorapatite Produced Via The Sol–Gel Method: Dissolution Behaviour And Biological Properties After Crystallisation, Cj Tredwin, Am Young, Ea Abou Neel, G Georgiou, Jc Knowles

Peninsula Dental School

Hydroxyapatite (HA), fluor-hydroxyapatite (FHA) with varying levels of fluoride ion substitution and fluorapatite (FA) were synthesised by the sol-gel method as possible implant coating or bone-grafting materials. Calcium nitrate and triethyl phosphite were used as precursors under an ethanol-water based solution. Different amounts of ammonium fluoride were incorporated for the preparation of the FHA and FA sol-gels. After heating and powdering the sol-gels, dissolution behaviour was assessed using ion chromatography to measure Ca(2+) and PO4 (3-) ion release. Biological behaviour was assessed using cellular proliferation with human osteosarcoma cells and alamarBlue™ assay. Statistical analysis was performed with a two way …

First Results With Twisted Mass Fermions Towards The Computation Of Parton Distribution Functions On The Lattice, C Alexandrou, K Cichy, V Drach, E Garcia-Ramos, K Hadjiyiannakou, K Jansen, F Steffens, C Wiese

School of Engineering, Computing and Mathematics

We report on our exploratory study for the evaluation of the parton distribution functions from lattice QCD, based on a new method proposed in Ref. arXiv:1305.1539. Using the example of the nucleon, we compare two different methods to compute the matrix elements needed, and investigate the application of gauge link smearing. We also present first results from a large production ensemble and discuss the future challenges related to this method.

Variable Response Of Three Trifolium Repens Ecotypes To Soil Flooding By Seawater., Anissia C. White, Timothy D. Colmer, Greg R. Cawthray, Mick E. Hanley

School of Biological and Marine Sciences

BACKGROUND AND AIMS: Despite concerns about the impact of rising sea levels and storm surge events on coastal ecosystems, there is remarkably little information on the response of terrestrial coastal plant species to seawater inundation. The aim of this study was to elucidate responses of a glycophyte (white clover, Trifolium repens) to short-duration soil flooding by seawater and recovery following leaching of salts. METHODS: Using plants cultivated from parent ecotypes collected from a natural soil salinity gradient, the impact of short-duration seawater soil flooding (8 or 24 h) on short-term changes in leaf salt ion and organic solute concentrations was …

A Developmental Approach To Predicting Neuronal Connectivity From Small Biological Datasets: A Gradient-Based Neuron Growth Model., R Borisyuk, Ak Al Azad, D Conte, A Roberts, Sr Soffe

School of Engineering, Computing and Mathematics

Relating structure and function of neuronal circuits is a challenging problem. It requires demonstrating how dynamical patterns of spiking activity lead to functions like cognitive behaviour and identifying the neurons and connections that lead to appropriate activity of a circuit. We apply a "developmental approach" to define the connectome of a simple nervous system, where connections between neurons are not prescribed but appear as a result of neuron growth. A gradient based mathematical model of two-dimensional axon growth from rows of undifferentiated neurons is derived for the different types of neurons in the brainstem and spinal cord of young tadpoles …

Capture Of Fixation By Rotational Flow; A Deterministic Hypothesis Regarding Scaling And Stochasticity In Fixational Eye Movements, Nm Wilkinson, G Metta

School of Engineering, Computing and Mathematics

Visual scan paths exhibit complex, stochastic dynamics. Even during visual fixation, the eye is in constant motion. Fixational drift and tremor are thought to reflect fluctuations in the persistent neural activity of neural integrators in the oculomotor brainstem, which integrate sequences of transient saccadic velocity signals into a short term memory of eye position. Despite intensive research and much progress, the precise mechanisms by which oculomotor posture is maintained remain elusive. Drift exhibits a stochastic statistical profile which has been modeled using random walk formalisms. Tremor is widely dismissed as noise. Here we focus on the dynamical profile of fixational …

Official Statistics Data Integration Using Copulas, L Dalla Valle

School of Engineering, Computing and Mathematics

No abstract provided.

A Step-Wise Process Of Decision-Making Under Uncertainty When Implementing Environmental Policy, Am Knights, F Culhane, Ss Hussain, Kn Papadopoulou, Et Al

School of Biological and Marine Sciences

An ecosystem approach forms the basis of many recent environmental policies. The underlying concept states that decision-makers must consider the environmental, social and economic costs and benefits in the course of deciding whether to implement a management action. Decision-making can be undermined by uncertainty. Here, we discuss potential sources of uncertainty and their effect on an ecosystem approach-driven environmental policy, the factors affecting the choice and potential for management actions to achieve their objectives, the challenges associated with setting realistic and achievable targets, and how we can prioritise management of detrimental activities. We also consider how human challenges such as …

Secondary Diaspora: Cape Verdean Immigration To The Southeastern United States, Jessica Lopes, Brandon Lundy

Faculty Articles

Diasporas are fluid cultural constructs that foster identity, community, and connections over time, distance, and social space. This study explores a derivative secondary diaspora to illustrate how and why diasporas are interesting social phenomena established out of complex socio-cultural, economic, and political conditions. Outside of the large Cape Verdean diaspora of New England, relatively little is known about other U.S. Cape Verdean communities. How do they maintain ties to both the primary diaspora in New England and their Cape Verdean homeland? This research examines second and third wave moves that push and pull individuals and families beyond established diasporic communities. …

Fact Sheet, Yale University Office Of Institutional Research

Fact Sheets

No abstract provided.

Erasing Boundaries: Inter-School Collaboration And Its Pedagogical Opportunities, Ian Gallacher, Amy Stein, Robyn A. Boyle, David Thomson

Hofstra Law Faculty Scholarship

Experiential learning is all the rage in legal education today. And yet, educators throughout history have known that involving students in their learning and exposing them to practical applications of what they are learning increases student engagement and retention. But legal education is coming to this way of thinking somewhat late. This article, based on a presentation that the authors gave at the AALS conference in New York in January of 2014, suggests that technology opens up new possibilities for law schools by allowing students from different schools to participate in complex inter-school simulations that can, if carefully prepared, teach …

Evolution Of U.S. Electric Energy Regulation: From Natural Monopoly Regulation To Regulated Competition, Gary Allison

Articles, Chapters in Books and Other Contributions to Scholarly Works

No abstract provided.

Threesource: Reimagining How We Collect And Share Information About Social Issues, Jen Hoyer, Stephen Macdonald

Publications and Research

This chapter examines management of information about social justice issues through discussion of the development and implementation of an online database, threeSOURCE. Managed by the Edmonton Social Planning Council, threeSOURCE is an online research database and library catalog created to help community organizations in the Canadian province of Alberta retrieve information about local social issues that they work to address. Reflections highlight issues related to creation, design, and implementation of a database, examining new ways to think about information delivery in line with the core values of our profession.

An Exploration Of Self-Management Support In The Context Of Palliative Nursing: A Modified Concept Analysis, Bridget Johnson, Liz Rogerson, Jurate Macijauskiene, Aurelija Blaževičienė, Patricia Cholewka

Publications and Research

Background
The role of self-management is often ambiguous, yet, it is an important area in clinical practice for palliative nurses. A clear conceptual understanding, however, of what it represents is lacking.

Method
This paper reports an analysis of the concept of self-management support in palliative nursing. Avant and Walker's method was used to guide this concept analysis. A search of electronic databases (1990–2013), use of internet search engines and supplementary hand searching produced an international data set of reviews, empirical research, editorials, protocols and guidelines.

Results
Based on the analysis self-management support in palliative nursing has been defined as assessing, …

The Experience Of Peer Leadership And Its Impact On Stem Success, A.E. Dreyfuss, Guannian Zeng, Yanna Chen, Janet Liou-Mark

Publications and Research

How do Peer Leaders view their leadership experience? A survey was administered during the Spring 2013 semester to current and former peer leaders at New York City College of Technology (“City Tech”) of the City University of New York (CUNY). The survey examined peer leaders’ perseverance and retention in their science, technology, engineering, or mathematics (STEM) disciplines, and their views on how the facilitation experience had impacted their personal and leadership growth and skills.

Chemistry Students’ Attitudes About Peer-Led Team Learning Workshops: Comparison To The Six Critical Components, A.E. Dreyfuss, Janet Liou-Mark, Leo Gafney

Publications and Research

While tracking students’ performance and perseverance is important to determine the effect of the incorporation of workshops in courses, little has been published on students’ attitudes toward workshops: How do students feel about PLTL workshops? One method of examining this question is through a questionnaire developed by Gafney. This paper will present the results of a three-semester study using this questionnaire on how students view workshop in their introductory chemistry courses.

Students’ Attitudes About Peer-Led Team Learning Workshops In General Chemistry: A Critical Incident Study, A.E. Dreyfuss, Janet Liou-Mark

Publications and Research

How would students respond to open-ended questions regarding their experiences with PLTL workshops? This paper will present the results of a two-semester qualitative study on how students view workshop in their introductory chemistry courses, using Brookfield’s (1995) Critical Incident Questionnaire (CIQ). The five questions probe what stands out in the affirmative and negative, using key words: engaged, distanced, affirmed, puzzled or confused, and surprising. Collecting key moments from students in workshop, after several weeks of meeting, allow a grounded sense of how students view the workshop experience.

Peer Leaders’ Views On A General Chemistry Workshop Program, A.E. Dreyfuss, Janet Liou-Mark

Publications and Research

How do Peer Leaders feel about their role organizationally? What motivates them to serve? Peer Leaders are the heartbeat of the PLTL instructional model. To improve any PLTL program, feedback from Peer Leaders is necessary and beneficial. Their experiences, ideas, and honest critiques will assist in shaping the program to meet its ultimate goal: To ensure all students are engaged in their learning process through an active community setting.

Technology And Wonder In Thirteenth-Century Iberia And Beyond, Christopher B. Swift

Publications and Research

As the desire for affective experiences of the sacred increased in communities across Europe in the late Middle Ages, the Christian faithful crafted lifelike, mechanized figures of Christ, the Virgin Mary, and saints for use in religious festivals. Although each devotional culture evidences unique body/object relationships and meanings, in general animated ritual objects encouraged lay participation in the celebration of saints and the Passion by engaging the senses, and, consequently, an emotional sense of God. In this essay I investigate the ritual alliances between moveable, prop-like saints and their Iberian devotees, in particular the performative meanings that arose from encounters …

Southwinds - Spring 2014

Southwinds: The Literary and Arts Magazine of Missouri S&T

THE LITERARY AND ARTS MAGAZINE OF MISSOURI UNIVERSITY OF SCIENCE AND TECHNOLOGY SPRING 2014 Southwinds is sponsored by the Department of English & Technical Communication

Report And Recommendations Of The Balance Of Crop Research Working Group Of The National Agricultural Research, Extension, Education And Economics (Nareee) Advisory Board, Mark Mclellan, Leo Holt, Twilya L'Ecuyer, Robert Taylor, Julia Sabin, Milo Shult, Anne Marie Thro, Paul Heisey

Biology Faculty Publications and Presentations

In December of 2012, the President’s Council of Advisors on Science & Technology (PCAST) issued a report to the President on Agricultural Preparedness and the Agriculture Research Enterprise. The PCAST report recognizes the long-term history of public investment in agricultural research. The report also recognized significant private investment into agricultural research. Significantly, the report is adamant that the agricultural research enterprise is not prepared to meet the challenges of the 21st century. The report cited two reasons:

1. too little competitive research and
2. an imbalance of research priorities between private and public funding sources.

This report addresses the latter issue.

Members …

Longitudinal Shear Resistance Of Composite Slabs Containing Crumb Rubber In Concrete Toppings, Niall Holmes, Kevin Dunne, John O'Donnell

Articles

This paper investigates the behaviour and longitudinal shear capacity of metal deck composite slabs with the inclusion of crumb rubber in the concrete toppings. The ability of the slabs to act compositely is governed by the shear interaction between the concrete topping and the profiled steel deck. Results here show that crumb rubber concrete (CRC) improve the overall shear bond capacity between the steel deck and topping following an experimental study on full scale loading tests in accordance with Eurocode 4. The results confirm that composite slabs incorporating crumb rubber had no effect on the longitudinal shear resistance with similar …

A Review Of The Hl-93 Bridge Traffic Load Model Using An Extensive Wim Database, Cathal Leahy, Eugene J. Obrien, Bernard Enright, Donya Hajializadeh

Articles

HL-93, the current bridge traffic load model used in the United States, is examined here. Weigh-in-motion from 17 sites in 16 states, and containing 74 million truck records, is used to assess the level of consistency in the characteristic load effects implied by the HL-93 model. The load effects of bending moment and shear force are considered on single-lane and two-lane same-direction slab and girder bridges with a range of spans. It is found that the ratio of WIM-implied to HL-93 load effect varies considerably from one load effect to another. An alternative model is proposed which achieves improvements in …

Aerocom: Winter 2014, John D. Odegard School Of Aerospace Sciences

Aerocom: John D. Odegard School of Aerospace Sciences Alumni Magazine

No abstract provided.

Novel Computational Approaches Characterizing Knee Physiotherapy, Wangdo Kim, Antonio P. Veloso, Duarte Araújo, Sean S. Kohles

Biology Faculty Publications and Presentations

A knee joint’s longevity depends on the proper integration of structural components in an axial alignment. If just one of the components is abnormally off-axis, the biomechanical system fails, resulting in arthritis. The complexity of various failures in the knee joint has led orthopedic surgeons to select total knee replacement as a primary treatment. In many cases, this means sacrificing much of an otherwise normal joint. Here, we review novel computational approaches to describe knee physiotherapy by introducing a new dimension of foot loading to the knee axis alignment producing an improved functional status of the patient. New physiotherapeutic applications …