134 research outputs found
Private car transport and the 10% RES-T target - quantifying the contribution of EVs and biofuels
In 2008, renewable energy accounted for less than 1% of final energy consumption in the Irish transport sector. In order to increase this share to 10% by 2020 as required under EU directive 2009/28/EC, the Irish government has introduced two specific measures: 10% of the transport fleet is to be powered by electricity by 2020, and an obligation on road transport fuel suppliers that biofuels account for a certain portion of their fuel sales. This study forecasts the impact of these existing measures towards meeting the 10% RES-T target by 2020, focussing on private car transport. The methodology presented is derived from a forecast of private car fuel demand based on a technological stock model of Irelandâs fleet. This paper demonstrates the use of this as a tool firstly as an energy forecasting technique and secondly as a method for evaluating the effects of policy measures on the technological composition and consequent renewable energy demand and related CO2emissions of private cars. Technological scenarios examined in this light are electric vehicles, compressed natural gas vehicles and biofuel blendin
Paul G. Leahy, Connor McGookin, Hannah E. Daly
In 2020, the Energy Engineering programme team at University College Cork undertook a redesign of the introductory first-year module in Energy Engineering. The aim was to introduce a more experientially-based learning experience and to allow first-year students greater opportunity to develop and demonstrate performance-based understanding. The key material change to the module was to incorporate design and group work in the first year of the programme. In the Wind Turbine Maker Challenge, groups of 4-5 students were tasked with designing and building a working wind turbine. Students were provided with kits comprising some basic elements of turbines including small generators and gearboxes and simple, flat blades. However, the focus of the exercise was on original design, particularly of the aerodynamic rotor components of the turbines. The participants had to source their own materials for the wind turbine rotors, and were encouraged to use recovered or recycled materials. Students were also asked to consider ethical aspects of wind energy generation. In developing this approach, the conceptualisation of teaching as setting up and facilitating students' performance was to the forefront. The formal classroom instruction was limited to only the core knowledge required to enable students to begin to consider suitable materials, geometries for their turbine designs through hands-on experimentation. Survey feedback from students showed that they had strongly focussed on the environmental and sustainability aspects of the exercise. Students were asked what they thought the goal of the exercise was. Studentsâ reported understandings of the main goal varied widely, for example âLearning how wind turbines workâ and âWorking as a team towards a common goalâ. However, all of the studentsâ reported goals were compatible with the moduleâs learning outcomes
Challenging energy engineering undergraduates with diverse perspectives on nuclear power
As part of an introductory energy engineering undergraduate module at University College Cork, student presentations on a zero-carbon energy plan for Ireland have shown a high preference for nuclear energy, despite a complete absence of nuclear energy from the same module curriculum. Nuclear power has never been built or generated in Ireland, is currently illegal, and faces high levels of public opposition. The origins of a high preference for nuclear energy among undergraduate student engineers is therefore unclear. In response to this high preference for, but critically unengaged view of nuclear power, the authors developed a participatory learning activity for first year undergraduate engineering students to engage with a range of maximally different perspectives on nuclear power. Four different perspectives on whether Ireland needs nuclear power were presented to this yearâs class: definitely yes; definitely no; maybe yes; maybe no. These perspectives involved a number of different framings of nuclear power and ranged across a spectrum from techno-economic to socio-technical. They emphasised to a greater or lesser degree issues around risk, cost, system impacts, timing, social acceptability, and sustainability. The activity took place in a room divided into four quadrants with each quadrant representing one of the four different perspectives on nuclear power. At the start of activity, students were invited to go to the quadrant that best represented their initial views. Each perspective on nuclear power was then delivered in a short expert presentation by one of the co- authors. Throughout these presentations, students were invited to remain in or move from their quadrant as they were persuaded or not by the arguments advanced. At the start of the activity, an overwhelming majority (96%) of the students indicated a yes preference with the majority of these being maybe yes (79%); at the end of the debate the total yes share had significantly decreased (to 54%), with the largest share of the lost vote moving to the maybe no category which finished at 36% (having started at 0%). Overall, there was a greater distribution of students across all four categories than at the start. Evaluations on the activity format were largely positive. Student reasons for changing their views were mostly socio-technical points specific to Ireland that included the electricity system, overall energy needs, costs and expert availability. Closing reflections introduced the idea of a wicked problem and highlighted the importance of values to questions such as âShould Ireland Go Nuclearâ, i.e. avoiding an exclusively narrow scientific framing
Restorative justice with female offenders: The neglected role of gender in restorative conferencing
This article presents findings from a new qualitative study into female offendersâ experiences of restorative conferencing in England and Wales. It is argued that gendered factors of crime and victimization have a definite impact on the restorative conference process, particularly in the areas of complex and interacting needs, differently natured conference engagements, and risks around shame, mental health, and stereotypical ideals of female behavior. For women to reap the full benefits of restorative justice, it is argued that the particular needs and circumstances of female offenders must not only be acknowledged, but also incorporated into the field and mainstreamed into practice
The Effect of Various Doses of Phenylalanine Supplementation on Blood Phenylalanine and Tyrosine Concentrations in Tyrosinemia Type 1 Patients
Tyrosinemia type 1 (TT1) treatment with 2-(2-nitro-4-trifluormethyl-benzyl)-1,3-cyclohexanedione (NTBC) and a phenylalanine-tyrosine restricted diet is associated with low phenylalanine concentrations. Phenylalanine supplementation is prescribed without comprehensive consideration about its effect on metabolic control. We investigated the effect of phenylalanine supplementation on bloodspot phenylalanine, tyrosine, NTBC and succinylacetone. Eleven TT1 patients received 0, 20 and 40 mg/kg/day phenylalanine supplementation with the phenylalanine-tyrosine free L-amino acid supplements. Bloodspots were collected before breakfast, midday and evening meal. Differences between study periods, sample times and days within a study period were studied using (generalized) linear mixed model analyses. Twenty and 40 mg/kg/day phenylalanine supplementation prevented daytime phenylalanine decreases (p = 0.05) and most low phenylalanine concentrations, while tyrosine concentrations increased (p <0.001). Furthermore, NTBC and succinylacetone concentrations did not differ between study periods. To conclude, 20 mg/kg/day phenylalanine supplementation can prevent most low phenylalanine concentrations without increasing tyrosine to concentrations above the target range or influencing NTBC and succinylacetone concentrations, while 40 mg/kg/day increased tyrosine concentrations to values above the targeted range. Additionally, this study showed that the effect of phenylalanine supplementation, and a possible phenylalanine deficiency, should be assessed using pre-midday meal blood samples that could be combined with an overnight fasted sample when in doubt
Working with female offenders in restorative justice frameworks: Effective and ethical practice
Despite a recent increase in restorative justice practice in the criminal justice system, to date there has been no in-depth consideration of the impact of gender in these settings. This paper presents findings from a unique qualitative study on female offendersâ experiences of restorative conferencing in England and Wales, drawing on interviews with practitioners who have worked with female cases, as well as with women who have gone through a restorative justice conference in a perpetrator capacity. Gender specific factors, suggested to be especially valuable for practitioners to consider when delivering effective and ethical restorative conferences with female offenders, are outlined
âYou just have to work with what youâve gotâ Practitioner research with precarious migrant families
This is an accepted manuscript of an article published by Taylor and Francis in Practice on 09/10/2017, available online: https://doi.org/10.1080/09503153.2017.1385756
The accepted version of the publication may differ from the final published version.Undocumented migrant families experience high levels of food poverty, exclusion from mainstream benefits, and sometimes from social work services. This is an under-researched area for social work in the UK, and there is no statutory guidance for social workers on supporting undocumented migrants. Practitioner research is one way of âvisibilisingâ their experiences. Six migrant families accessing a voluntary sector stay and play project were interviewed using a practitioner research model of semi-structured interviews on the themes of food, access to services and children. The research found that families responded to their situation with a seemingly contradictory strategy of resignation and resilience. The implications for practitioners working with this user group are considered, and suggestions for support services for this group of families are offered
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A dietary feedback system for the delivery of consistent personalized dietary advice in the web-based multicenter Food4Me study
Background: Despite numerous healthy eating campaigns, the prevalence of diets high in saturated fatty acids, sugar, and salt and low in fiber, fruit, and vegetables remains high. With more people than ever accessing the Internet, Web-based dietary assessment instruments have the potential to promote healthier dietary behaviors via personalized dietary advice.
Objective: The objectives of this study were to develop a dietary feedback system for the delivery of consistent personalized dietary advice in a multicenter study and to examine the impact of automating the advice system.
Methods: The development of the dietary feedback system included 4 components: (1) designing a system for categorizing
nutritional intakes; (2) creating a method for prioritizing 3 nutrient-related goals for subsequent targeted dietary advice; (3)
constructing decision tree algorithms linking data on nutritional intake to feedback messages; and (4) developing personal feedback
reports. The system was used manually by researchers to provide personalized nutrition advice based on dietary assessment to 369 participants during the Food4Me randomized controlled trial, with an automated version developed on completion of the study.
Results: Saturated fatty acid, salt, and dietary fiber were most frequently selected as nutrient-related goals across the 7 centers.
Average agreement between the manual and automated systems, in selecting 3 nutrient-related goals for personalized dietary
advice across the centers, was highest for nutrient-related goals 1 and 2 and lower for goal 3, averaging at 92%, 87%, and 63%,
respectively. Complete agreement between the 2 systems for feedback advice message selection averaged at 87% across the centers.
Conclusions: The dietary feedback system was used to deliver personalized dietary advice within a multi-country study. Overall, there was good agreement between the manual and automated feedback systems, giving promise to the use of automated systems
for personalizing dietary advice
Genetic risk and a primary role for cell-mediated immune mechanisms in multiple sclerosis.
Multiple sclerosis is a common disease of the central nervous system in which the interplay between inflammatory and neurodegenerative processes typically results in intermittent neurological disturbance followed by progressive accumulation of disability. Epidemiological studies have shown that genetic factors are primarily responsible for the substantially increased frequency of the disease seen in the relatives of affected individuals, and systematic attempts to identify linkage in multiplex families have confirmed that variation within the major histocompatibility complex (MHC) exerts the greatest individual effect on risk. Modestly powered genome-wide association studies (GWAS) have enabled more than 20 additional risk loci to be identified and have shown that multiple variants exerting modest individual effects have a key role in disease susceptibility. Most of the genetic architecture underlying susceptibility to the disease remains to be defined and is anticipated to require the analysis of sample sizes that are beyond the numbers currently available to individual research groups. In a collaborative GWAS involving 9,772 cases of European descent collected by 23 research groups working in 15 different countries, we have replicated almost all of the previously suggested associations and identified at least a further 29 novel susceptibility loci. Within the MHC we have refined the identity of the HLA-DRB1 risk alleles and confirmed that variation in the HLA-A gene underlies the independent protective effect attributable to the class I region. Immunologically relevant genes are significantly overrepresented among those mapping close to the identified loci and particularly implicate T-helper-cell differentiation in the pathogenesis of multiple sclerosis
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