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614 result(s) for "E. Gentry"
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Social dynamics of core members in mixed-species bird flocks change across a gradient of foraging habitat quality
Social associations within mixed-species bird flocks can promote information flow about food availability and provide predator avoidance benefits. The relationship between flocking propensity, foraging habitat quality, and interspecific competition can be altered by human-induced habitat degradation. Here we take a close look at sociality within two ecologically important flock-leader (core) species, the Carolina chickadee ( Poecile carolinensis ) and tufted titmouse ( Baeolophus bicolor ), to better understand how degradation of foraging habitat quality affects mixed-species flocking dynamics. We compared interactions of free ranging wild birds across a gradient of foraging habitat quality in three managed forest remnants. Specifically, we examined aspects of the social network at each site, including network density, modularity, and species assortativity. Differences in the social networks between each end of our habitat gradient suggest that elevated levels of interspecific association are more valuable in the habitat with low quality foraging conditions. This conclusion is supported by two additional findings: First, foraging height for the subordinate Carolina chickadee relative to the tufted titmouse decreased with an increase in the number of satellite species in the most disturbed site but not in the other two sites. Second, the chickadee gargle call rate, an acoustic signal emitted during agonistic encounters between conspecifics, was relatively higher at the high-quality site. Collectively, these results suggest an increase in heterospecific associations increases the value of cross-species information flow in degraded habitats.
The future of just war : new critical essays
\"Just War scholarship has adapted to contemporary crises and situations. But its adaptation has spurned debate and conversation--a method and means of pushing its thinking forward. Now the Just War tradition risks becoming marginalized. This concern may seem out of place as Just War literature is proliferating, yet this literature remains welded to traditional conceptualizations of Just War. Caron E. Gentry and Amy E. Eckert argue that the tradition needs to be updated to deal with substate actors within the realm of legitimate authority, private military companies, and the questionable moral difference between the use of conventional and nuclear weapons. Additionally, as recent policy makers and scholars have tried to make the Just War criteria legalistic, they have weakened the tradition's ability to draw from and adjust to its contemporaneous setting. The essays in The Future of Just War seek to reorient the tradition around its core concerns of preventing the unjust use of force by states and limiting the harm inflicted on vulnerable populations such as civilian noncombatants. The pursuit of these challenges involves both a reclaiming of traditional Just War principles from those who would push it toward greater permissiveness with respect to war, as well as the application of Just War principles to emerging issues, such as the growing use of robotics in war or the privatization of force. These essays share a commitment to the idea that the tradition is more about a rigorous application of Just War principles than the satisfaction of a checklist of criteria to be met before waging \"just\" war in the service of national interest\"-- Provided by publisher.
The impact of different radiology report formats on patient information processing: a systematic review
Background Since radiology reports are primarily written for health professionals, patients may experience difficulties understanding jargon and terminology used, leading to anxiety and confusion. Objectives This review evaluates the impact of different radiology report formats on outcomes related to patient information processing, including perception, decision (behavioral intention), action (actual health behavior), and memory (recall of information). Methods PubMed, Web of Science, EMBASE, and PsycInfo were searched for relevant qualitative and quantitative articles describing or comparing ways of presenting diagnostic radiology reports to patients. Two reviewers independently screened for relevant articles and extracted data from those included. The quality of articles was assessed using the Mixed Methods Appraisal Tool. Results Eighteen studies, two qualitative and sixteen quantitative, were included. Sixteen studies compared multiple presentation formats, most frequently traditional unmodified reports ( n  = 15), or reports with anatomic illustrations ( n  = 8), lay summaries ( n  = 6) or glossaries ( n  = 6). Glossaries, illustrations, lay summaries, lay reports or lay conclusions all significantly improved participants’ cognitive perception and perception of communication of radiology reports, compared to traditional reports. Furthermore, these formats increased affective perception (e.g., reduced anxiety and worry), although only significant for lay reports and conclusions. Conclusion Modifying traditional radiology reports with glossaries, illustrations or lay language enhances patient information processing. Key Points Question Identifying the impact of different radiology report formats on outcomes related to patient information processing to enhance patient engagement through online access to radiology reports. Findings Lay language summaries, glossaries with patient-oriented definitions, and anatomic illustrations increase patients’ satisfaction with and understanding of their radiology reports. Clinical relevance To increase patients’ satisfaction, perceived usefulness and understanding with radiology reports, the use of lay language summaries, glossaries with patient-oriented definitions, and anatomic illustrations is recommended. These modifications decrease patients’ unnecessary insecurity, confusion, anxiety and physician consultations after viewing reports.
Coupled Hydrologic and Biogeochemical Responses of Nitrate Export in a Tile‐Drained Agricultural Watershed Revealed by SAS Functions and Nitrate Isotopes
The combination of high nitrogen (N) inputs on tile‐drained agricultural watersheds contributes to excessive nitrate (NO3−) loss to surface‐ and groundwater systems. This study combined water age modeling based on StorAge Selection functions and NO3− isotopic analysis to examine the underlying mechanisms driving NO3− export in an intensively tile‐drained mesoscale watershed typical of the U.S. Upper Midwest. The water age modeling revealed a pronounced inverse storage effect and strong young water preference under high‐flow conditions, emphasizing evolving water mixing behavior driven by groundwater fluctuation and tile drain activation. Integrating NO3− concentration‐isotope‐discharge relationships with water age dynamics disentangled the interactions between flow path variations and subsurface N cycling in shaping seasonally variable NO3− export regimes at the watershed scale. Based on these results, a simple transit time‐based and isotope‐aided NO3− transport model was developed to estimate the timescales of watershed‐scale NO3− reactive transport. Model results demonstrated variable NO3− source availability and a wetness dependence for denitrification, indicating that interannual NO3− chemostasis is driven by coupled and proportional responses of soil NO3− production, denitrification, and flow path activation to varying antecedent wetness conditions. These findings suggest that intensively tile‐drained Midwestern agricultural watersheds function as both N transporters and transformers and may respond to large‐scale mitigation efforts within a relatively short timeframe. Collectively, the results of this study demonstrate the potential of integrated water age modeling and NO3− isotopic analysis to advance the understanding of macroscale principles governing coupled watershed hydrologic and N biogeochemical functions.
Phosphorus Transport Pathways to Streams in Tile-Drained Agricultural Watersheds
Agriculture is a major nonpoint source of phosphorus (P) in the Midwest, but how surface runoff and tile drainage interact to affect temporal concentrations and fluxes of both dissolved and particulate P remains unclear. Our objective was to determine the dominant form of P in streams (dissolved or particulate) and identify the mode of transport of this P from fields to streams in tile-drained agricultural watersheds. We measured dissolved reactive P (DRP) and total P (TP) concentrations and loads in stream and tile water in the upper reaches of three watersheds in east-central Illinois (Embarras River, Lake Fork of the Kaskaskia River, and Big Ditch of the Sangamon River). For all 16 water year by watershed combinations examined, annual flow-weighted mean TP concentrations were >0.1 mg L-1, and seven water year by watershed combinations exceeded 0.2 mg L-1. Concentrations of DRP and particulate P (PP) increased with stream discharge; however, particulate P was the dominant form during overland runoff events, which greatly affected annual TP loads. Concentrations of DRP and PP in tiles increased with discharge, indicating tiles were a source of P to streams. Across watersheds, the greatest DRP concentrations (as high as 1.25 mg L-1) were associated with a precipitation event that followed widespread application of P fertilizer on frozen soils. Although eliminating this practice would reduce the potential for overland runoff of P, soil erosion and tile drainage would continue to be important transport pathways of P to streams in east-central Illinois.
Beyond Mothers, Monsters, Whores
Beyond Mothers, Monsters, Whores takes the suggestion in Mothers, Monsters, Whores that it is important to see genderings in characterizations of violent women, and to use critique of those genderings to retheorize individual violence in global politics. It begins by demonstrating the interdependence of the personal and international levels of global politics in violent women's lives, but then shows that this interdependence is inaccurately depicted in gender-subordinating narratives of women's violence. Such narratives, the authors argue, are not only normatively problematic on the surface but also intersect with other identifiers, such as race, religion, and geopolitical location.
Flocking propensity by satellites, but not core members of mixed-species flocks, increases when individuals experience energetic deficits in a poor-quality foraging habitat
Mixed-species bird flocks are complex social systems comprising core and satellite members. Flocking species are sensitive to habitat disturbance, but we are only beginning to understand how species-specific responses to habitat disturbance affect interspecific associations in these flocks. Here we demonstrate the effects of human-induced habitat disturbance on flocking species' behavior, demography, and individual condition within a remnant network of temperate deciduous forest patches in Indiana, USA. Specifically, we characterized the following properties of two core species, Carolina chickadees (Poecile carolinensis) and tufted titmice (Baeolophus bicolor), across a secondary-forest disturbance gradient: foraging time budgets, home range size, fat scores, fledgling counts, survival rates, and abundance. We also report fat scores for two satellite species that flock with the core study species: white-breasted nuthatches (Sitta carolinensis) and downy woodpeckers (Dryobates pubescens). Finally, we assess mixed-species flock sizes and composition, in addition to avian predator call rates, across the disturbance gradient. Foraging time budgets and home range size were highest and fat scores were lowest for core species in the most-disturbed site. Fat scores of two satellite species followed the same pattern. Additionally, the number of tufted titmice fledglings and winter survival rate of Carolina chickadees were lowest at the most-disturbed site. These results suggest that core species in the most-disturbed site experienced energetic deficits. Moreover, cumulative calling rate of raptors was lowest at the most-disturbed site, and none of the individual raptor species call rates were higher at the most-disturbed site-suggesting that perception of predation risk does not contribute to these patterns. Surprisingly, the satellites continued associating with mixed species flocks through the breeding season at the most-disturbed site. Total flock size and interspecific association patterns were otherwise consistent across the gradient. The fact that satellites continued to flock with core species during the breeding season suggests foraging niche expansion resulting from mixed-species flocking is important in disturbed sites even beyond the winter season. Our study reveals mechanisms underlying flock composition of birds surviving in remnant forest and links the mechanisms to degradation of foraging habitat. These findings offer important insight into the relative impact potential of forest disturbance on mixed-species flocks in the North Temperate Zone.
This American Moment
This American Moment focuses on the concept of anxiety politics by arguing that America is in crisis. Those who uphold or participate in racist and misogynist politics are threatened by changes to the status quo, such as the economic gains made by women and therefore respond with reactivity and defensiveness. This book examines first, the Black Lives Matter campaign as the latest disruption of the raced structures that define America and the anxious reactions that seek to protect and maintain the race structures; second, the particular economic, bodily, and reproductive health vulnerabilities that women face that have amalgamated into America’s War on Women as anxious reactions to maintain patriarchy; and, finally, the how racism and misogyny unwittingly and rather unexpectedly led to the election of Trump and opened the door to fascism in the United States. The book argues that these are all destructive outcomes of anxiety and responds by envisioning a creative intervention: arguing that an alternative response to anxiety is to think creatively about our relationships, society, and politics. The author poses this as feminist Christian realism, an update of Reinhold Niebuhr’s Christian realism, arguing that religious approaches still have a place in politics and international relations.
Trap States in Reduced Colloidal Titanium Dioxide Nanoparticles Have Different Proton Stoichiometries
Added electrons and holes in semiconducting (nano)­materials typically occupy “trap states,” which often determine their photophysical properties and chemical reactivity. However, trap states are usually ill-defined, with few insights into their stoichiometry or structure. Our laboratory previously reported that aqueous colloidal TiO2 nanoparticles prepared from TiCl4 + H2O have two classes of electron trap states, termed Blue and Red. Herein, we show that the formation of Red from oxidized TiO2 requires 1e – + 1H+, while Blue requires 1e – + 2H+. The two states are in a protic equilibrium, Blue ⇌ Red + H+, with K eq = 2.65 mM. The Blue states in the TiO2 NPs behave just like a soluble molecular acid with this K eq as their K a, as supported by solvent isotope studies. Because the trap states have different compositions, their population and depopulation occur with the making and breaking of chemical bonds and not (as commonly assumed) just by the movement of electrons. In addition, the direct observation of a 2H+/1e – trap state contradicts the emerging H atom transfer (1H+/1e –) paradigm for oxide/solution interfaces. Finally, this work emphasizes the importance of chemical stoichiometries, not just electronic energies, in understanding and directing the reactivity at solid/solution interfaces.