720 research outputs found
The Play in the System
What does artistic resistance look like in the twenty-first century, when disruption and dissent have been co-opted and commodified in ways that reinforce dominant systems? In The Play in the System Anna Watkins Fisher locates the possibility for resistance in artists who embrace parasitismâtactics of complicity that effect subversion from within hegemonic structures. Fisher tracks the ways in which artists on the marginsâfrom hacker collectives like Ubermorgen to feminist writers and performers like Chris Krausâhave willfully abandoned the radical scripts of opposition and refusal long identified with anticapitalism and feminism. Space for resistance is found instead in the mutually, if unevenly, exploitative relations between dominant hosts giving only as much as required to appear generous and parasitical actors taking only as much as they can get away with. The irreverent and often troubling works that result raise necessary and difficult questions about the conditions for resistance and critique under neoliberalism today
The Power of Play: The Portrayal and Performance of Race in Video Games
Part of the Volume on the Ecology of Games: Connecting Youth, Games, and LearningThe chapter addresses the following question: in what ways do young people's interactions with video games influence how and what they learn about race? We begin by examining one of the most heavily marketed genres in the video games marketplace, what we call "urban/street" games. Specifically, we consider how these games, and the richly detailed and textured urban landscapes they present, establish powerful learning environments that help situate how young gamers understand, perform, and reproduce race and ethnicity. Next, we focus on the aesthetic and narrative properties of one of the most controversial yet successful video games franchises in America, Grand Theft Auto. More precisely, we consider how Grand Theft Auto teaches dominant attitudes and assumptions about race and racial Otherness through racialized pedagogical zones (RPZs). In the final section of the paper we expand the discussion of race and games to include concerns about access to and participation in digital media culture
Simulation of the Sampling Distribution of the Mean Can Mislead
Although the use of simulation to teach the sampling distribution of the mean is meant to provide students with sound conceptual understanding, it may lead them astray. We discuss a misunderstanding that can be introduced or reinforced when students who intuitively understand that âbigger samples are betterâ conduct a simulation to explore the effect of sample size on the properties of the sampling distribution of the mean. From observing the patterns in a typical series of simulated sampling distributions constructed with increasing sample sizes, students reasonablyâbut incorrectlyâconclude that, as the sample size, n, increases, the mean of the (exact) sampling distribution tends to get closer to the population mean and its variance tends to get closer to 2 / , where 2 is the population variance. We show that the patterns students observe are a consequence of the fact that both the variability in the mean and the variability in the variance of simulated sampling distributions constructed from the means of N random samples are inversely related, not only to N, but also to the size of each sample, n. Further, asking students to increase the number of repetitions, N, in the simulation does not change the patterns
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Fair Use in the Visual Arts: Lesson Plans for Librarians
The authors guide art information professionals in crafting learning experiences that empower students to understand copyright and take advantage of fair use in their art, design, and academic practices. The College Art Associationâs Code of Best Practices in Fair Use for the Visual Arts, endorsed by ARLIS/NA in 2015, is a key document that has the potential to transform the use of images in the visual arts. Education will be an essential part of the integration of the Code into the visual arts, and art information professionals are well positioned to teach fair use and the Code. This book was created to further ARLIS/NAâs mission to support the evolving role of art information professionals, which increasingly includes copyright and fair use instruction. The lesson plans in this book will help those new to copyright instruction teach the Code through engaging activities and assignments. The lesson plans are also meant to inspire teachers experienced with fair use instruction through creative ideas and new ways to integrate copyright instruction into art classes, digital humanities projects, and design education
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A moving mesh finite element method and its application to population dynamics
The moving mesh finite element method (MMFEM) is a highly useful tool for the numerical solution of partial differential equations. In particular, for reaction-diffusion equations and multi-phase equations, the method provides the ability to track features of interest such as blow-up, the ability to track a free boundary, and the ability to model a dynamic interface between phases. This is achieved through a geometric conservation approach, whereby the integral of a suitable quantity is constant within a given patch of elements, but the footprint
and location of those elements are dynamic. We apply the MMFEM to a variety of systems, including for the first time to various forms of the Lotka-Volterra competition equations. We derive a Lotka-Volterra based reaction-diffusion-aggregation system with two phases, representing spatially segregated species separated by a competitive interface. We model this system using the MMFEM, conserving an integral of population density within each patch of elements. We demonstrate its feasibility as a tool for ecological studies
Historical Geomorphological Research of a Ligurian Coastal Floodplain (Italy) and Its Value for Management of Flood Risk and Environmental Sustainability
The alluvial plain of the Entella River (Eastern Liguria), historically affected by damaging
flood events, has been heavily modified over the past 250 years by human activity and natural
processes. A qualitative and quantitative analysis of the morphological and land use evolution of the
Entella floodplain since the 18th century was carried out using base maps and aerial photos ranging
from 1758 to 2016. These diverse sources were Geographical Information System (GIS) georeferenced.
Additional information on land-use change was gathered from historical documents and recent
research reports. The main transformations to the floodplain include morphological changes,
e.g., narrowing, channelization, displacement of the river channel and the advance of the coastal line
due to fills and embankments. In addition, there has been very significant urbanization with loss
of vegetated and agricultural areas. Our results indicate the primary role of human disturbance on
morphological changes and landscape modifications of the coastal floodplain, particularly over the
last 200 years. Furthermore, the historical geomorphological and cartographical analysis we adopted
to reconstruct the floodplain transformation represents an essential tool in flood risk mitigation and
environmental sustainability management, particularly in an urbanized coastal plain historically
affected by floods
A validated methodology for the prediction of heating and cooling energy demand for buildings within the Urban Heat Island: Case-study of London
This is the post-print version of the final paper published in Solar Energy. The published article is available from the link below. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. Copyright @ 2010 Elsevier B.V.This paper describes a method for predicting air temperatures within the Urban Heat Island at discreet locations based on input data from one meteorological station for the time the prediction is required and historic measured air temperatures within the city. It uses London as a case-study to describe the method and its applications. The prediction model is based on Artificial Neural Network (ANN) modelling and it is termed the London Site Specific Air Temperature (LSSAT) predictor. The temporal and spatial validity of the model was tested using data measured 8 years later from the original dataset; it was found that site specific hourly air temperature prediction provides acceptable accuracy and improves considerably for average monthly values. It thus is a very reliable tool for use as part of the process of predicting heating and cooling loads for urban buildings. This is illustrated by the computation of Heating Degree Days (HDD) and Cooling Degree Hours (CDH) for a WestâEast Transect within London. The described method could be used for any city for which historic hourly air temperatures are available for a number of locations; for example air pollution measuring sites, common in many cities, typically measure air temperature on an hourly basis.EPSR
The role and scope of contemporary midwifery practice in Australia: A scoping review of the literature
Problem:
Little is known about the breadth of midwifery scope within Australia, and few midwives work to their full scope of practice.
Background:
Midwives in Australia are educated and professionally accountable to work in partnership with childbearing women and their families, yet they are currently hindered from practicing within their full scope of practice by contextual influences.
Aims:
To perform a scoping review of the literature to map out the role and scope of contemporary midwifery practice in Australia
To identify any key issues that impact upon working within the full scope of midwifery practice in the Australian context
Methods:
A scoping review of the literature guided by the Arksey and OâMalleyâs five-stage methodological framework, and the âbest fitâ framework synthesis using the Nursing and Midwifery Board of Australiaâs Midwifery Standards for Practice.
Findings:
Key themes that emerged from the review included Partnership with women; The professional role of the midwife; and Contextual influences upon midwifery practice.
Discussion:
Tensions were identified between the midwifery scope of practice associated with optimal outcomes for women and babies supported by current evidence and the actual role and scope of most midwives employed in models of care in the current Australian public healthcare system.
Conclusions:
There is a mismatch between the operational parameters for midwifery practice in Australia and the evidence-based models of continuity of midwifery carer that are associated with optimal outcomes for childbearing women and babies and the midwives themselves
Diagnostic accuracy of 3.0-T magnetic resonance T1 and T2 mapping and T2-weighted dark-blood imaging for the infarct-related coronary artery in Non-ST-segment elevation myocardial infarction
Background: Patients with recent nonâSTâsegment elevation myocardial infarction commonly have heterogeneous characteristics that may be challenging to assess clinically.
Methods and Results: We prospectively studied the diagnostic accuracy of 2 novel (T1, T2 mapping) and 1 established (T2âweighted short tau inversion recovery [T2WâSTIR]) magnetic resonance imaging methods for imaging the ischemic area at risk and myocardial salvage in 73 patients with nonâSTâsegment elevation myocardial infarction (mean age 57±10 years, 78% male) at 3.0âT magnetic resonance imaging within 6.5±3.5 days of invasive management. The infarctârelated territory was identified independently using a combination of angiographic, ECG, and clinical findings. The presence and extent of infarction was assessed with late gadolinium enhancement imaging (gadobutrol, 0.1 mmol/kg). The extent of acutely injured myocardium was independently assessed with native T1, T2, and T2WâSTIR methods. The mean infarct size was 5.9±8.0% of left ventricular mass. The infarct zone T1 and T2 times were 1323±68 and 57±5 ms, respectively. The diagnostic accuracies of T1 and T2 mapping for identification of the infarctârelated artery were similar (P=0.125), and both were superior to T2WâSTIR (P<0.001). The extent of myocardial injury (percentage of left ventricular volume) estimated with T1 (15.8±10.6%) and T2 maps (16.0±11.8%) was similar (P=0.838) and moderately well correlated (r=0.82, P<0.001). Mean extent of acute injury estimated with T2WâSTIR (7.8±11.6%) was lower than that estimated with T1 (P<0.001) or T2 maps (P<0.001).
Conclusions: In patients with nonâSTâsegment elevation myocardial infarction, T1 and T2 magnetic resonance imaging mapping have higher diagnostic performance than T2WâSTIR for identifying the infarctârelated artery. Compared with conventional STIR, T1 and T2 maps have superior value to inform diagnosis and revascularization planning in nonâSTâsegment elevation myocardial infarction.
Clinical Trial Registration: URL: http://www.clinicaltrials.gov. Unique identifier: NCT02073422
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