WORK carried out at the United States Naval Air Development Centre indicates that coatings of solid lubricants can considerably cut down wear rates and, consequently, prolong the…
Abstract
WORK carried out at the United States Naval Air Development Centre indicates that coatings of solid lubricants can considerably cut down wear rates and, consequently, prolong the life of tools made from high‐speed steel. Furthermore, reduced machining and tool‐dressing times may be anticipated—so suggests an article by these joint authors in a recent “Molysulfide Newsletter”.
As a movement for alternative means of food production and consumption has grown, so, too, have civic efforts to make alternative food accessible to low-income persons (LIPs)…
Abstract
Purpose
As a movement for alternative means of food production and consumption has grown, so, too, have civic efforts to make alternative food accessible to low-income persons (LIPs). This article examines the impact of alternative food institutions (AFIs) on low-income communities in the United States and Canada, focusing on research published since 2008.
Methodology/approach
Through a three-stage literature search, I created a database of 110 articles that make empirical or theoretical contributions to scholarly knowledge on the relationship of AFIs to low-income communities in North America. I used an in vivo coding scheme to categorize the impacts that AFIs have on LIPs and to identify predominant barriers to LIPs’ engagement with AFIs.
Findings
The impacts of AFIs span seven outcome categories: food consumption, food access and security, food skills, economic, other health, civic, and neighborhood. Economic, social and cultural barriers impede LIPs’ engagement with AFIs. AFIs can promote positive health outcomes for low-income persons when they meet criteria for affordability, convenience and inclusivity.
Implications
This review exposes productive avenues of dialogue between health scholars and medical sociology and geography/environmental sociology. Health scholarship offers empirical support for consumer-focused solutions. Conversely, by constructively critiquing the neoliberal underpinnings of AFIs’ discourse and structure, geographers and sociologists supply health scholars with a language that may enable more systemic interventions.
Originality/value
This article is the first to synthesize research on five categories of alternative food institutions (farmers’ markets, CSAs, community gardens, urban farms, and food cooperatives) across disciplinary boundaries.
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This essay brings structural intimacies – theorised as the meeting of social structural patterns with interpersonal lives – to the border to consider transnational LGBTQ kinships…
Abstract
This essay brings structural intimacies – theorised as the meeting of social structural patterns with interpersonal lives – to the border to consider transnational LGBTQ kinships. Specifically, the paper considers ‘the border’ and its state-driven bio-regulations as a reproductive technology that produces LGBTQ, racial/ethnic and social class inequities through the consolidation of heteronormative, bio-genetic kinship institutions and ideations of family. Structural intimacies harnesses intimacy as both subject and as an analytic lens for queering reproductive sociology that insists on re-conceptualizing institutions central to our lives. Structural intimacies move our analytic gaze from how the border structures sexuality, and vice versa, to consider the border as at once a structural and an affective domain. Structural intimacies is a conceptual tool useful for cross-disciplinary inquiry into the social and structural contexts in which reproductive technologies render meaning, as well as produce families, and to illustrate the analytic necessity of storying both content and method as integral to queer/ing scholarship. Straddling the most proximal forms of daily care and labor patterning everyday intimacies with the policies and practices of the state, the concept of structural intimacies reveals moments of encounter between state institutions with the most intimate components of a person's life and identity, in this case amplified by the bio-politics of the border.
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This paper aims to describe the work of a group of seventh-grade boys in a middle school superhero storytelling project. In this project, the boys, one of whom identified as…
Abstract
Purpose
This paper aims to describe the work of a group of seventh-grade boys in a middle school superhero storytelling project. In this project, the boys, one of whom identified as Latino and five of whom identified as Black, created a voiceless, faceless, raceless superhero named “Mute.” Using a Black feminist theoretical framework, the author considers how the boys authored embodied moments in the construction of their character and in a basketball scene. The author argues that within the narrated space of the story, embodiment functioned as a critical tool for authoring spaces that thwarted and bypassed dominant social narratives.
Design/methodology/approach
The white, female, university-affiliated author was a participant-researcher in the “Mute” group’s ten storytelling sessions. The ethnographic data set collected included fieldnotes, recordings and copies of all the writing and images of the group. The author uses this data to conduct a narrative analysis of the Mute story.
Findings
The author suggests that the group’s authoring of embodiment and choreography in their story makes space outside of the binary stances often available in traditional critical analyses. Instead, the group’s attention to embodied aspects of their character(s) allowed them to refuse either/or positions of such stances and construct a textured reality that existed beyond these bounds.
Originality/value
Black feminist theorists have warned that critical readings are potentially essentializing, risking a reification of the same systems they hope to overturn. The Mute group’s invention of a superhero character and their use of authored embodiment deflected such essentializing readings to imagine a new, more just (story) world. Thus, the author recommends an increased attention to how students are writing and reading embodiment to fully see the everyday ways they are critically working both against and beyond the social narratives that organize their lives.
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Stephanie Al Otaiba, Jeanine Clancy-Menchetti and Christopher Schatschneider
More than ever before, researchers and policymakers expect general education classroom to be the first line of defense in efforts to prevent reading difficulties. Preventing…
Abstract
More than ever before, researchers and policymakers expect general education classroom to be the first line of defense in efforts to prevent reading difficulties. Preventing reading difficulties through evidence-based beginning reading instruction research features prominently in the 2002 No Child Left Behind legislation (NCLB; P. L. 107-110) and in the 2004 amendments to the Individuals with Disabilities Act (IDEA). The purpose of this chapter is to describe the experimental and quasi-experimental methodological approaches that have been used to examine the effects of professional development in reading on teachers’ instructional practices and students’ reading outcomes and to evaluate the chain of causal linkage in the more recent studies. The first section of the chapter provides a brief history of relevant research. The second section summarizes findings of the National Reading Panel (NRP, 2000) Report and those of a recent review of the literature (Clancy-Menchetti & Al Otaiba, 2006). The final section synthesizes what we have learned from the research.
Belkallouche Abderrahmane, Tahar Rezoug and Laurent Dala
Aircraft noise is dominant for residents near airports when planes fly at low altitudes such as during departure and landing. Flaps, wings, landing gear contribute significantly…
Abstract
Purpose
Aircraft noise is dominant for residents near airports when planes fly at low altitudes such as during departure and landing. Flaps, wings, landing gear contribute significantly to the total sound emission. This paper aims to present a passive flow control (in the sense that there is no power input) to reduce the noise radiation induced by the flow over the cavity of the landing gear during take-off and landing.
Design/methodology/approach
The understanding of the noise source mechanism is normally caused by the unsteady interactions between the cavity surface and the turbulent flows as well as some studies that have shown tonal noise because of cavity resonances; this tonal noise is dependent on cavity geometry and incoming flow that lead us to use of a sinusoidal surface modification application upstream of a cavity as a passive acoustics control device in approach conditions.
Findings
It is demonstrated that the proposed surface waviness showed a potential reduction in cavity resonance and in the overall sound pressure level at the majority of the points investigated in the low Mach number. Furthermore, optimum sinusoidal amplitude and frequency were determined by the means of a two-dimensional computational fluid dynamics analysis for a cavity with a length to depth ratio of four.
Research limitations/implications
The noise control by surface waviness has not implemented in real flight test yet, as all the tests are conducted in the credible numerical simulation.
Practical implications
The application of passive control method on the cavity requires a global aerodynamic study of the air frame is a matter of ongoing debate between aerodynamicists and acousticians. The latter is aimed at the reduction of the noise, whereas the former fears a corruption of flow conditions. To balance aerodynamic performance and acoustics, the use of the surface waviness in cavity leading edge is the most optimal solution.
Social implications
The proposed leading-edge modification it has important theoretical basis and reference value for engineering application it can meet the demands of engineering practice. Particularly, to contribute to the reduce the aircraft noise adopted by the “European Visions 2020”.
Originality/value
The investigate cavity noise with and without surface waviness generation and propagation by using a hybrid approach, the computation of flow based on the large-eddy simulation method, is decoupled from the computation of sound, which can be performed during a post-processing based on Curle’s acoustic analogy as implemented in OpenFOAM.
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Bonita L. Betters-Reed and Lynda L. Moore
When we take the lens of race, ethnicity, gender, and class to the collected academic work on women business owners, what does it reveal? What do we really know? Are there…
Abstract
When we take the lens of race, ethnicity, gender, and class to the collected academic work on women business owners, what does it reveal? What do we really know? Are there differing definitions of success across segments of the women businessowner demographics? Do the challenges faced by African American women entrepreneurs differ from those confronting white female entrepreneurs? Do immigrant female women businessowners face more significant institutional barriers than their counterparts who have been U.S. citizens for at least two generations? Are there similar reasons for starting their businesses?
The various physical and surface‐chemical factors which might affect the lubricating action of molybdenum disulphide are discussed; the importance of particle size and shape are…
Abstract
The various physical and surface‐chemical factors which might affect the lubricating action of molybdenum disulphide are discussed; the importance of particle size and shape are emphasized. Up to date thoughts on lubrication mechanism are examined together with various environmental factors which can affect its industrial use. Recent Climax development work, particularly with respect to MoS2 greases concludes the paper.
James M Kendra and Tricia Wachtendorf
The World Trade Center disaster generated many of the features seen in other disasters in the U.S., including post-disaster convergence. We conceptualize emergency management…
Abstract
The World Trade Center disaster generated many of the features seen in other disasters in the U.S., including post-disaster convergence. We conceptualize emergency management activities as taking place within a multilocational “response milieu,” and we suggest that the study of convergence should focus on the negotiated legitimacy of people in and wishing to enter it. We discuss the five types of personal convergers and how the access of each of these groups to the response milieu was related to their legitimation status. We then identify two additional forms of convergence: supporters or fans, and those who came to mourn or to memorialize. We conclude by discussing implications for policy.