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3,587 result(s) for "Lewis, Rebecca"
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Making sense of literacy scholarship : approaches to synthesizing literacy research
\"This book is a roadmap to the key decisions, processes, and procedures to use when synthesizing qualitative literacy research. Covering the major types of syntheses-including the dissertation literature review, traditional literature review, integrative literature review, meta-synthesis, and meta-ethnography-Compton-Lilly, Rogers, and Ellison offer techniques and frameworks to use when making sense of a large body of scholarship. Addressing the standard and untraditional forms a research synthesis can take, the authors provide clear and practical examples of synthesis designs and techniques, and consider how epistemological, ontological, and ethical questions arise when designing and adapting a research synthesis. The extensive appendices feature sample literature reviews, guidance on communication with editors of journals, useful charts, and more. The authors' critical reflection and analysis demonstrates how a research synthesis is not simply a means to an end, but rather reflects each scholar's interests, target audience, and message. This book is crucial reading for undergraduate and graduate students, as well as early career and more experienced researchers in literacy education\"-- Provided by publisher.
Aggression, rank and power
Thorlief Schjelderup-Ebbe's seminal paper on the 'pecking' order of chickens inspired numerous ethologists to research and debate the phenomenon of dominance. The expansion of dominance to the broader concept of power facilitated disentangling aggression, strength, rank and power. Aggression is only one means of coercing other individuals, and can sometimes highlight a lack of power. The fitness advantages of aggression may only outweigh the costs during periods of uncertainty. Effective instruments of power also include incentives and refusals to act. Moreover, the stability of the power relationship might vary with the instruments used if different means of power vary in the number and types of outcomes achieved, as well as the speed of accomplishing those outcomes. In well-established relationships, actions or physiological responses in the subordinate individual may even be the only indicator of a power differential. A focus on strength, aggression and fighting provides an incomplete understanding of the power landscape that individuals actually experience. Multiple methods for constructing hierarchies exist but greater attention to the implications of the types of data used in these constructions is needed. Many shifts in our understanding of power were foreshadowed in Schjelderup-Ebbe's discussion about deviations from the linear hierarchy in chickens. This article is part of the theme issue 'The centennial of the pecking order: current state and future prospects for the study of dominance hierarchies'.
Traveling the blue road : poems of the sea
Gorgeous illustrations surround a collection of poetry written for children about the magic, beauty, and promise of sea voyages. Compiled and edited by award-winning poet Lee Bennett Hopkins, the poems describe how the sea has historically shone as a metaphor for hope and despair and served as a pathway for people searching for new life, including poems about the pilgrims coming to the New World, the Mariel boatlift, the Vietnamese boat people, a Dutch slave ship, the current migration situation in the Mediterranean, and the voyage of the St. Louis.
Female Power in Primates and the Phenomenon of Female Dominance
Sex-biased power structures are common in human and nonhuman primate societies. \"Female dominance\" is a term applied to a wide range of female-biased power structures. However, the full extent of this variation remains obscure because an adequate vocabulary of power has not been adopted consistently. Female power occurs throughout primates and other animals, even in male-dominant societies, but the legacy of patriarchy persists in primatologists' use of language and implicit assumptions about intersexual power. While explanations for the occurrence of female power can be accommodated within existing ethological theory, many hypotheses seeking to explain the evolution of female power are narrowly focused on particular taxa. Theories about primate social evolution would benefit from a synthesis of the disparate literature on power, increased emphasis on intersexual social relationships, and comparative studies that include the full behavioral diversity of primates and other mammals.
Writing programs, collaborations, and partnerships : transcending boundaries
\"This book demonstrates how to develop and engage in successful academic collaborations that are both practical and sustainable across campuses and within local communities. Authored by experienced writing program administrators, this edited collection includes a wide range of information addressing collaborative partnerships and projects, theoretical explorations of collaborative praxis, and strategies for sustaining collaborative initiatives. Contributors offer case studies of writing program collaborations and honestly address both the challenges of academic collaboration and the hallmarks of successful partnerships.\"--Publisher description.
Evolutionary trends in host physiology outweigh dietary niche in structuring primate gut microbiomes
Over the past decade several studies have reported that the gut microbiomes of mammals with similar dietary niches exhibit similar compositional and functional traits. However, these studies rely heavily on samples from captive individuals and often confound host phylogeny, gut morphology, and diet. To more explicitly test the influence of host dietary niche on the mammalian gut microbiome we use 16S rRNA gene amplicon sequencing and shotgun metagenomics to compare the gut microbiota of 18 species of wild non-human primates classified as either folivores or closely related non-folivores, evenly distributed throughout the primate order and representing a range of gut morphological specializations. While folivory results in some convergent microbial traits, collectively we show that the influence of host phylogeny on both gut microbial composition and function is much stronger than that of host dietary niche. This pattern does not result from differences in host geographic location or actual dietary intake at the time of sampling, but instead appears to result from differences in host physiology. These findings indicate that mammalian gut microbiome plasticity in response to dietary shifts over both the lifespan of an individual host and the evolutionary history of a given host species is constrained by host physiological evolution. Therefore, the gut microbiome cannot be considered separately from host physiology when describing host nutritional strategies and the emergence of host dietary niches.
Does Zipf’s law of abbreviation shape birdsong?
In human languages, words that are used more frequently tend to be shorter than words that are used less frequently. This pattern is known as Zipf’s law of abbreviation. It has been attributed to the principle of least effort – communication is more efficient when words that are used more frequently are easier to produce. Zipf’s law of abbreviation appears to hold in all human languages, and recently attention has turned to whether it also holds in animal communication. In birdsong, which has been used as a model for human language learning and development, researchers have focused on whether more frequently used notes or phrases are shorter than those that are used less frequently. Because birdsong can be highly stereotyped, have high interindividual variation, and have phrase repertoires that are small relative to human language lexicons, studying Zipf’s law of abbreviation in birdsong presents challenges that do not arise when studying human languages. In this paper, we describe a new method for assessing evidence for Zipf’s law of abbreviation in birdsong, and we introduce the R package ZLAvian to implement this method. We used ZLAvian to study Zipf’s law of abbreviation in the songs of 11 bird populations archived in the open-access repository Bird-DB. We did not find strong evidence for Zipf’s law of abbreviation in any population when studied alone, but we found evidence for Zipf’s law in a synthetic analysis across all populations. Overall, the negative concordance between phrase length and frequency of use in birdsong was several times weaker than the negative concordance between word length and frequency of use in written human languages. The method and the results we present here offer a new foundation for researchers studying if or how the principle of least effort shapes animal communication.
Hypofractionated radiotherapy in locally advanced bladder cancer: an individual patient data meta-analysis of the BC2001 and BCON trials
Two radiotherapy fractionation schedules are used to treat locally advanced bladder cancer: 64 Gy in 32 fractions over 6·5 weeks and a hypofractionated schedule of 55 Gy in 20 fractions over 4 weeks. Long-term outcomes of these schedules in several cohort studies and case series suggest that response, survival, and toxicity are similar, but no direct comparison has been published. The present study aimed to assess the non-inferiority of 55 Gy in 20 fractions to 64 Gy in 32 fractions in terms of invasive locoregional control and late toxicity in patients with locally advanced bladder cancer. We did a meta-analysis of individual patient data from patients (age ≥18 years) with locally advanced bladder cancer (T1G3 [high-grade non-muscle invasive] or T2–T4, N0M0) enrolled in two multicentre, randomised, controlled, phase 3 trials done in the UK: BC2001 (NCT00024349; assessing addition of chemotherapy to radiotherapy) and BCON (NCT00033436; assessing hypoxia-modifying therapy combined with radiotherapy). In each trial, the fractionation schedule was chosen according to local standard practice. Co-primary endpoints were invasive locoregional control (non-inferiority margin hazard ratio [HR]=1·25); and late bladder or rectum toxicity, assessed with the Late Effects Normal Tissue Task Force-Subjective, Objective, Management, Analytic tool (non-inferiority margin for absolute risk difference [RD]=10%). If non-inferiority was met for invasive locoregional control, superiority could be considered if the 95% CI for the treatment effect excluded the null effect (HR=1). One-stage individual patient data meta-analysis models for the time-to-event and binary outcomes were used, accounting for trial differences, within-centre correlation, randomised treatment received, baseline variable imbalances, and potential confounding from relevant prognostic factors. 782 patients with known fractionation schedules (456 from the BC2001 trial and 326 from the BCON trial; 376 (48%) received 64 Gy in 32 fractions and 406 (52%) received 55 Gy in 20 fractions) were included in our meta-analysis. Median follow-up was 120 months (IQR 99–159). Patients who received 55 Gy in 20 fractions had a lower risk of invasive locoregional recurrence than those who received 64 Gy in 32 fractions (adjusted HR 0·71 [95% CI 0·52–0·96]). Both schedules had similar toxicity profiles (adjusted RD −3·37% [95% CI −11·85 to 5·10]). A hypofractionated schedule of 55 Gy in 20 fractions is non-inferior to 64 Gy in 32 fractions with regard to both invasive locoregional control and toxicity, and is superior with regard to invasive locoregional control. 55 Gy in 20 fractions should be adopted as a standard of care for bladder preservation in patients with locally advanced bladder cancer. Cancer Research UK.
Terrestriality and bacterial transfer: a comparative study of gut microbiomes in sympatric Malagasy mammals
The gut microbiomes of mammals appear to mirror their hosts’ phylogeny, suggesting host-driven microbial community assembly. Yet, much of this evidence stems from comparative studies of distinct wild or captive populations that lack data for disentangling the relative influences of shared phylogeny and environment. Here, we present phylogenetic and multivariate analyses of gut microbiomes from six sympatric (i.e., co-occurring) mammal species inhabiting a 1-km 2 area in western Madagascar—three lemur and three non-primate species—that consider genetic, dietary, and ecological predictors of microbiome functionality and composition. Host evolutionary history, indeed, appears to shape gut microbial patterns among both closely and distantly related species. However, we also find that diet—reliance on leaves versus fruit—is the best predictor of microbiome similarity among closely related lemur species, and that host substrate use—ground versus tree—constrains horizontal transmission via incidental contact with feces, with arboreal species harboring far more distinct communities than those of their terrestrial and semi-terrestrial counterparts.
Assessing the impact of wildlife conservation areas on human well-being
Effective wildlife conservation is inextricably linked to the well-being of people living in and around conservation areas. Historically, conservationists have focused on a narrow range of externally defined socio-economic proxies for human well-being, failing to provide the affected population with the opportunity to assess their own life and connection to local conservation interventions. If conservation area assessments do not faithfully detect the complex and multidimensional nature of human well-being, conservation policies and practices may be misaligned with the core objectives of conservation and detrimental to the rights and livelihoods of local communities. To address this concern, we evaluated the relationship between income, multidimensional poverty, and human well-being in 594 households (1,362 individuals) bordering Kirindy Mitea National Park, Madagascar. The vast majority of local community members (86% of households) lived below the international poverty line of 2.15 US$ per day, and nearly all (95% of households) were multidimensionally ‘impoverished,’ enduring severe health, education, and living standards deprivation. Human well-being, measured using the Global Person Generated Index (GPGI), was low, with a median of 5.25 (IQR 3.25–7.00; scale range: 0.00–10.00). Higher income was associated with lower multidimensional poverty (χ² = 14.57, df = 3, p = 0.002, ε² = 0.02) and higher well-being (ρ = 0.14, p < 0.001), but multidimensional poverty was unrelated to well-being (χ² = 3.81, df = 3, p = 0.283, ε² = 0.001). Perceptions of the park were largely negative: more than 80% of households reported no benefit to income or overall well-being, and costs such as displacement and loss of access to land and resources were widely cited. Local priorities for improving well-being centered on employment, financial assistance, food security, and agricultural support, complemented by strong demand for improved healthcare, education, and community infrastructure. Our study highlights substantial human costs associated with stringent environmental protections and illustrates the importance of integrating assessments of human well-being together with socio-economic evaluations of conservation areas.