548 research outputs found
Marine Protected Areas in Canada with a Particular Emphasis on Newfoundland: Science, Policy and Implementation at Multiple Institutional Levels
The primary goal of Marine Protected Areas is to conserve and protect part or all of a marine environment through legal or other effective means. MPAs are a global phenomenon that has become part of national level ocean policy and practice in such nations as Australia, Canada, and the US.
Marine protected areas depend, for their success, on the development of an informal network of local policy and practice, which varies among communities. They succeed in circumstances where national policy or legal precedent does not dissolve local policy and practice, and where national policy facilitates and can accommodate local arrangements. The collapse of fisheries in the late 20th century in Canada provided the political impetus and policy framework that increased the capacity of the federal government to accommodate local arrangements in marine waters through Canada’s Oceans Act 1996.
Two Marine Protected Areas, at Eastport and Gilbert Bay, were designated in Newfoundland and Labrador in 2005 under the Oceans Act, and a third, at Leading Tickles, is in the development stage. Eastport has a research program on lobsters in place, Gilbert Bay has a program on ‘golden cod’, but no research program existed at Leading Tickles. DFO Oceans began to collect data and worked closely with community members to develop research priorities, carry out research projects and develop management programs for each MPA. The provincial government was involved as members of the MPA steering committees, and local representatives provided input.
Based on the political momentum for Marine Protected Areas, the second objective of this project was to identify internationally significant science questions for research within Newfoundland and Labrador. Recent research conducted by Memorial University at the Gilbert Bay and Eastport MPAs and the Leading Tickles Area of Interest (AOI) has been a mixture of descriptive and causal science directed at local issues arising within each of the three locations (two MPAs and one AOI). Past research helped to define the scope of some of the science problems in an informal way. This report takes the next step, which is to identify questions significant to both local issues and the understanding of coastal ecosystems by the national and international science community.
Sound scientific evidence is needed to identify whether the intended effects are being achieved and to document accompanying effects. The emerging practice is initial science input followed by devolution of monitoring activities to local communities, with guidance from academic scientists. The effectiveness of these scientists would be increased by national initiatives to develop the capacity to guide locally based monitoring efforts. One potential model for science guidance is that used for environmental impact assessment, where monitoring activities are designed as tests of hypotheses concerning effects stated in an impact assessment
Value first, then price: the new paradigm of B2B buying and selling
Most companies today take an inherently adversarial approach to buying and selling in industrial markets, thereby missing out on opportunities for joint value creation with customers and suppliers. Sales as well as procurement are too obsessed with price and not enough with value. In this paper we present a set of principles that put joint value creation at the centre of the relationship with customers and suppliers. With respect to customers, the value quantification capability is the most important competency of the sales function, i.e. the ability to translate a firm’s competitive advantages into one quantified, monetary value reflecting both qualitative as well as quantitative customer benefits. With respect to suppliers, we call for the creation of new metrics, such as total value of ownership, reflecting innovation, management capabilities, sustainability, and other elements beyond quality, price, and delivery. With value quantification capabilities (sales) and total value of ownership models (procurement) the key element of relationship with both customers and suppliers is value first, then price
What are the patterns of personal learning environments (PLE) for undergraduate students undertaking degrees in nursing.
This is the Core Paper Abstract submitted for the NET conference September 201
Understanding the ecology of the Personally Significant Learning Environment (PSLE): one year on
Background: Personal learning environments (PLE) have been shown to be critical in how students negotiate, manage and experience their learning. Understandings of PLEs are largely restricted by narrow definitions that focus on technology alone. The idea of a PLE is often conflated with virtual learning environments (VLEs). In this presentation, we draw on empirical findings from an international study that spanned four countries. Our findings will be of interest to students, educators, researchers and institutions and will facilitate a more in depth understanding of how to support students to create appropriate PLEs for effectively managing their own learning.
Aims: The study aim was to provide in-depth insights into how undergraduate students of nursing manage and experience learning through a range of formal and informal components that comprise the PLE. It is a longitudinal mixed-method study that incorporates two key phases. The first phase will be the focus of this presentation.
Research design: The first phase comprised a series of focus groups held at each of four institutions in Australia, England, Scotland, Hong Kong and Canada. Ethical approval was obtained at each individual study site. Recruitment at each site was through student emails, flyers and invitations on eLearning sites. Inclusion criteria were that students needed to be enrolled in an undergraduate degree leading to a nurse registration.
An important ethical consideration was that students understood that participation or non-participation would not impact relationships with their academic institutions or study outcomes. Nominal group techniques were used in the focus groups together with providing visual representations of their PLE in the form of a sketch or conceptual map. The themed sticky notes and visual representations were photographed and stored for subsequent analysis. Data were analyzed independently by researchers at each site. This initial analysis was at the broadest level of abstraction in order to identify main emerging categories. Via a series of meetings through voice over IP (VoIP) technologies, investigators were able to employ a process of triangulation to provide and reach a consensus regarding commonalities that appeared from focus groups.
Key Findings: Eight groups comprising a total of 46 students took part in focus groups across the four sites. The findings from the focus groups generated a range of different types of data that were organized into three major themes; technologies, learning modalities and influencing factors.
Technologies included physical items such as; devices; computers; books; journals; newspapers; and furniture; and virtual technology such as; software; applications; and internet resources.
PLEs are influenced by individual learning preferences and the learning contexts that students find themselves in. Participants described how the ways they were expected to learn at university, did not always suit their personal learning preferences. Understanding their own learning style was important to enable an effective PLE and customising learning to suit personal preferences was seen as important.
An individual’s PLE is impacted by external, interpersonal and intrapersonal factors. A PLE is influenced by these factors both individually, and by the interplay between the factors. External factors included the physical, built aspects of the environment and the learner’s ambient environment.
Intrapersonal factors included attitudes, beliefs, preferences and emotions. Interpersonal factors such as how, when and where participants engaged with others also played a significant role in their PLE.
Findings suggest a broader understanding of the term personal learning environment than currently exists. Their PLE was relational and comprised a space with personal meaning and significance to the learner - in support of their educational goals.
Current definitions of PLE do not capture the broader understanding identified by this study, we therefore propose a new term: personally significant learning environment
Bridging the gap between policy and science in assessing the health status of marine ecosystems
Human activities, both established and emerging, increasingly affect the provision of marine ecosystem services that deliver societal and economic benefits. Monitoring the status of marine ecosystems and determining how human activities change their capacity to sustain benefits for society requires an evidence-based Integrated Ecosystem Assessment approach that incorporates knowledge of ecosystem functioning and services). Although, there are diverse methods to assess the status of individual ecosystem components, none assesses the health of marine ecosystems holistically, integrating information from multiple ecosystem components. Similarly, while acknowledging the availability of several methods to measure single pressures and assess their impacts, evaluation of cumulative effects of multiple pressures remains scarce. Therefore, an integrative assessment requires us to first understand the response of marine ecosystems to human activities and their pressures and then develop innovative, cost-effective monitoring tools that enable collection of data to assess the health status of large marine areas. Conceptually, combining this knowledge of effective monitoring methods with cost-benefit analyses will help identify appropriate management measures to improve environmental status economically and efficiently. The European project DEVOTES (DEVelopment Of innovative Tools for understanding marine biodiversity and assessing good Environmental Status) specifically addressed t hese topics in order to support policy makers and managers in implementing the European Marine Strategy Framework Directive. Here, we synthesize our main innovative findings, placing these within the context of recent wider research, and identifying gaps and the major future challenges
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Greek research reactor performance characteristics after addition of beryllium reflector and LEU fuel
The GRR-1 is a 5-MW pool-type, light-water-moderated and-cooled reactor fueled with MTR-type fuel elements. Recently received Be reflector blocks will soon be added to the core to add additional reactivity until fresh LEU fuel arrives. REBUS-3 xy fuel cycle analyses, using burnup dependent cross sections, were performed to assist in fuel management decisions for the water- and Be-reflected HEU nonequilibrium cores. Cross sections generated by EPRI-CELL have been benchmarked to identical VIM Monte Carlo models. The size of the Be-reflected LEU core has been reduced to 30 elements compared to 35 for the HEU water-reflected core, and an equilibrium cycle calculation has been performed
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Use of silicide fuel in the Ford Nuclear Reactor - to lengthen fuel element lifetimes
Based on economic considerations, it has been proposed to increase the lifetime of LEU fuel elements in the Ford Nuclear Reactor by raising the {sup 235}U plate loading from 9.3 grams in aluminide (UAl{sub x}) fuel to 12.5 grams in silicide (U{sub 3}Si{sub 2}) fuel. For a representative core configuration, preliminary neutronic depletion and steady state thermal hydraulic calculations have been performed to investigate core characteristics during the transition from an all-aluminide to an all-silicide core. This paper discusses motivations for this fuel element upgrade, results from the calculations, and conclusions
A new method for assessing the recyclability of powders within Powder Bed Fusion process
Recycling metallic powders used in the additive manufacturing (AM) process is essential for reducing the process cost, manufacturing time, energy consumption, and metallic waste. In this paper, the focus is on pore formation in recycled powder particles of stainless steel 316L during the selective laser melting process. We have introduced the concept of optimizing the powder bed's printing area in order to see the extent of the affected powders during the 3D-printing process. X-ray Computed Tomography (XCT) is used to characterize the pores inside the particles. The results from image processing of the tomography (rendered in 3D format) indicate a broader pore size distribution and a higher pore density in recycled powders compared to their virgin counterparts. To elucidate on this, the Electron Dispersion spectroscopy (EDX) analysis and Synchrotron-based Hard X-ray Photoelectron Spectroscopy (HAXPES) were performed to reveal the chemical composition distribution across the pore area and bulk of the recycled powder particles. Higher concentrations of Fe, Cr, and Ni were recorded on the interior wall of the pore in recycled particles and higher Mn, S and Si concentrations were recorded in the outer layer around the pore area and on the surface of the recycled particle. The pore formation in recycled powder is attributed to out-diffusion of Mn, S and Si to the outer surface as a result of the incident laser heat during the AM process due to higher electron affinity of such metallic elements to oxygenation. HAXPES analysis shows a higher MnO concentration around the pore area which impedes the in-diffusion of other elements into the bulk and thereby helps to creates a void. The inside wall of the pore area (dendrites), has a higher concentration of Fe and Cr oxide. We believe the higher pore density in recycled powders is due, at least in part to composition redistribution, promoted by laser heat during the AM process. Nanoindentation analyses on both virgin and recycled powder particles shows a lower hardness and higher effective modulus in the recycled powder particles attributed to the higher porosity in recycled powders
Human Female Genital Tract Infection by the Obligate Intracellular Bacterium Chlamydia trachomatis Elicits Robust Type 2 Immunity
While Chlamydia trachomatis infections are frequently asymptomatic, mechanisms that regulate host response to this intracellular Gram-negative bacterium remain undefined. This investigation thus used peripheral blood mononuclear cells and endometrial tissue from women with or without Chlamydia genital tract infection to better define this response. Initial genome-wide microarray analysis revealed highly elevated expression of matrix metalloproteinase 10 and other molecules characteristic of Type 2 immunity (e.g., fibrosis and wound repair) in Chlamydia-infected tissue. This result was corroborated in flow cytometry and immunohistochemistry studies that showed extant upper genital tract Chlamydia infection was associated with increased co-expression of CD200 receptor and CD206 (markers of alternative macrophage activation) by endometrial macrophages as well as increased expression of GATA-3 (the transcription factor regulating TH2 differentiation) by endometrial CD4+ T cells. Also among women with genital tract Chlamydia infection, peripheral CD3+ CD4+ and CD3+ CD4- cells that proliferated in response to ex vivo stimulation with inactivated chlamydial antigen secreted significantly more interleukin (IL)-4 than tumor necrosis factor, interferon-γ, or IL-17; findings that repeated in T cells isolated from these same women 1 and 4 months after infection had been eradicated. Our results thus newly reveal that genital infection by an obligate intracellular bacterium induces polarization towards Type 2 immunity, including Chlamydia-specific TH2 development. Based on these findings, we now speculate that Type 2 immunity was selected by evolution as the host response to C. trachomatis in the human female genital tract to control infection and minimize immunopathological damage to vital reproductive structures. © 2013 Vicetti Miguel et al
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