bluuebunny/crossref_metadata_2025_split huggingface dataset:
Adhesively bonded joint brittle fracture assessment via average strain energy density criterion
Authors: Ferro Paolo , Berto Filippo 
Published: September 2020

AbstractThe average strain energy density (ASED) criterion applied to design of notched mechanical components has been achieved a considerable success over the years thanks to its numerous advantages including the need for a relatively coarse mesh, the use of a scalar rather than vector quantity and the ability to compare the strength of parts with different notch angles. It is known that adhesively bonded joints mechanical strength is governed by the stress singularity arising near the intersection between the adhesive‐substrate interface and the free surface of the bonded joint, even without notches. This is due to the different elastic material properties of the adhesive compared to those of the substrate that induces a constitutive stress singularity. This phenomenon makes the strain energy density criterion particularly suitable for the design of bonded joints, as well. This contribution is aimed at applying the ASED criterion to the static strength assessment of bonded joints. Experimental results taken from literature were found in good agreement with those predicted by the ASED approach.
The two‐sided nature of reliance on prior knowledge and on L1/L2 structural similarity in L2 sentence comprehension
Authors: Rosenstein Ofra , Meir Irit , Miller Paul 
Published: September 2020

AbstractThe study explored the contribution of prior knowledge and reliance on L1 syntactic knowledge to L2 written sentence comprehension. Participants, 102 native Hebrew speakers at three education levels (junior high, high school, and postsecondary), answered questions in two sentence categories: Semantically plausible sentences that readers can understand by linking their content words to prior knowledge; semantically neutral sentences, whose comprehension requires adequate syntactic processing. To track the benefits of linguistic transfer from Hebrew (L1) to English (L2), the study manipulated the languages’ cross‐linguistic structural similarity. The results suggest that Hebrew‐speaking students rely on prior knowledge and/or on structural similarities between Hebrew and English to interpret English sentences. When they cannot rely on either of these two factors, they manifest remarkably poor understanding of quite basic English constructions even at the postsecondary level.
Modelling daily catches of silver‐phase European eel (Anguilla anguilla) in two hydropower‐regulated rivers
Authors: Lenihan Eamonn S. , McCarthy T. Kieran , Lawton Colin 
Published: September 2020

AbstractEstimation of silver eel production, Anguilla anguilla L., is fundamental for the management of eel stocks. In the hydropower‐regulated rivers Shannon and Erne, Ireland, production is calculated using catch data from a conservation trap and transport programme. However, in both rivers gaps in silver eel catch datasets tend to occur, which can lead to biases in production estimates. Generalised additive models (GAMs) were used to model daily catch in these rivers based on a variety of environmental variables. Final models for the Shannon and Erne explained 83.7% and 78.8% of deviance in daily catch, respectively. A second model on the Erne included catch from a nearby fishing site in an attempt to increase explanatory power and explained 91.7% of deviance. Although model accuracy was increased, reliance on catch from another site may limit the applicability of the model. Model predictions were combined with estimates of fishing efficiency to predict production for the Shannon (36,210 kg; 0.85 kg/ha) and Erne (66,899–67,047 kg; 2.55–2.56 kg/ha). These values represented a 9.3% and 2.8%–3.0% increase on production estimated from incomplete catch records alone for the Shannon and Erne, respectively.
Importance of metapopulation dynamics to explain fish persistence in a river system
Authors: Bellard Céline , Hugueny Bernard 
Published: September 2020

Abstract

Habitat modification and fragmentation are key factors responsible for fish population decline worldwide. Previous assessments documented a total of 72 species extinctions for the sole class of Actinopterygii. However, global extinctions are difficult to monitor or study based on fossil records. By contrast, local extinctions occurring at the population level are easier to study. Given this context, an important question relates to whether extinction dynamics studied at the local scale can provide useful information to understand extinctions occurring at larger scales. This would be the case if local extinctions were not balanced by recolonisation as in a classic metapopulation. Our aim is thus to explain the observed regional (per basin) persistence of 252 fish populations by testing contribution of local extinction rates and more generally metapopulation dynamics components.

To address this aim, we used the annual extinction probability of 252 regional populations of up to 14 species inhabiting 18 coastal rivers, which became isolated c. 8,500 years ago. We specifically compared extinction probabilities obtained by seven theoretical models to investigate whether regional extinction rates (i.e. loss from a river system) were correlated to local extinction rates (i.e. loss from an occupied site) and the role of metapopulation dynamics to explain regional persistence.

Using empirical data, we showed the importance of variables related to metapopulation dynamics to explain extinction rates across the 18 river systems. As expected, the regional extinction rate decreased with the colonisation rate, area, metapopulation size, and percentage of occupied localities. By contrast, an inconsistent relationship emerged between regional and local extinction rates, as species with high local extinction rates were not particularly prone to regional extinction.

Our results provide strong support for the contribution of colonisation rates to explain persistence. Overall, our results show that the equilibrium number of occupied localities could be a good predictor of the long‐term persistence of metapopulations in rivers. Finally, our results suggest the importance of connectivity to maintain sustainable populations within the river system.
Beyond ecological opportunity: Prey diversity rather than abundance shapes predator niche variation
Authors: Sánchez‐Hernández Javier , Finstad Anders G. , Arnekleiv Jo Vegar , Kjærstad Gaute , Amundsen Per‐Arne 
Published: September 2020

AbstractEcological opportunity (i.e. the diversity of available resources) has a pivotal role in shaping niche variation and trophic specialisation of animals. However, ecological opportunity can be described with regard to both diversity and abundance of resources. The degree to which these two components contribute to niche variation remains unexplored.To address this, we used an extensive dataset on fish diet and benthic invertebrate diversity and density from 73 sampling events in three Norwegian rivers in order to explore realised trophic niches and the response of dietary niche variation along gradients of resource diversity (potential trophic niches), resource density (as a proxy of resource abundance) and fish density (as a proxy of inter‐ and intra‐specific competition) in a freshwater top predator (the brown trout,Salmo truttaL.).Linear models indicated that individual and population niche variation increased with increasing ecological opportunity in terms of prey diversity. However, no simple cause‐and‐effect associations between niche indices and prey abundance were found. Our multiple regression analyses indicated that the abundance of certain resources (e.g. Chironomidae) can interact with prey diversity to determine individual and population realised trophic niches. Niche variation (within‐individual component and inter‐individual diet variation) decreased with increasing inter‐ and intra‐specific competition.This study extends prevailing trophic ecology theory by identifying diversity, rather than density, of available prey resources as a primary driver of niche variation in fish of temperate riverine systems with no extensive resource limitation. The study also shows that ecological opportunity may mask the direction of the effect (compression or expansion) of competition on niche variation when food resources are diverse.Our study provides novel empirical insight to the driving forces behind niche variation and reveals that diversity, rather than density, of available prey resources may be a primary driver of niche variation in freshwater fish. Our study supports the view that a broader potential trophic niche promotes broader realised trophic niche variation by individuals, which leads to individual niche diversification by opening access to alternatives resources, resulting in a concomitant rise in the realised trophic niche width of the population.
Better desiccated than eaten by fish: Distribution of anurans among habitats with different risks to offspring
Authors: Kloskowski Janusz 
Published: September 2020

Abstract

Freshwater species with complex life cycles face a trade‐off between the risks of offspring mortality due to desiccation in temporary habitats and due to predators common in long‐duration habitats, especially fish. In real‐world conditions, intermediate‐gradient areas that are highly suitable for some ecological specialists are often limited. I examined the relative significance of drivers of the permanence–predation gradient in habitat selection by pond‐breeding anurans.

Anuran oviposition was investigated at the community level in fish pond landscapes with only three types of habitat, permanent fish‐containing ponds and highly desiccation‐prone pools, either fishless or recently emptied of fish and with fish odour (fish cue). Altogether, 65 ponds/pools, interspersed in four clusters, were examined for the presence of egg masses.

Bufo bufo was the only species preferring permanent ponds. Egg masses of Rana sp. (Rana arvalis/Rana temporaria) occurred in all fishless pools, and less frequently in the ponds. Bufotes viridis and long larval period species Pelobates fuscus and Hyla orientalis oviposited almost exclusively in fishless pools. Fish‐cue pools were avoided by all species. Anuran richness was higher in fishless pools than in permanent ponds. Species distribution between the two habitats was nested, with both common and rare species occurring in fishless pools.

The results indicate the primacy of offspring predation risk over hydroperiod constraints in oviposition decision‐making by fish‐intolerant anurans. The absence of some species from ponds and pools with fish or fish cues shows that non‐consumptive interactions may better explain the scarcity of anuran larvae in waters dominated by fish than actual consumption. The strict avoidance of fish habitats despite their proximity to fishless patches indicates fine‐scale assessment of predation risk. However, rigid habitat selection against fish predation on offspring may prove maladaptive if habitats with high desiccation risk are the main alternative and are indiscriminately preferred. Maintenance of fishless wetlands with a hydroperiod sufficient to allow completion of metamorphosis should be a conservation priority for anuran diversity in areas where fishless habitats are limited.
Structure and parameter uncertainty in centennial projections of forest community structure and carbon cycling
Authors: Shiklomanov Alexey N. , Bond‐Lamberty Ben , Atkins Jeff W. , Gough Christopher M. 
Published: September 2020

AbstractSecondary forest regrowth shapes community succession and biogeochemistry for decades, including in the Upper Great Lakes region. Vegetation models encapsulate our understanding of forest function, and whether models can reproduce multi‐decadal succession patterns is an indication of our ability to predict forest responses to future change. We test the ability of a vegetation model to simulate C cycling and community composition during 100 years of forest regrowth following stand‐replacing disturbance, asking (a) Which processes and parameters are most important to accurately model Upper Midwest forest succession? (b) What is the relative importance of model structure versus parameter values to these predictions? We ran ensembles of the Ecosystem Demography model v2.2 with different representations of processes important to competition for light. We compared the magnitude of structural and parameter uncertainty and assessed which sub‐model–parameter combinations best reproduced observed C fluxes and community composition. On average, our simulations underestimated observed net primary productivity (NPP) and leaf area index (LAI) after 100 years and predicted complete dominance by a single plant functional type (PFT). Out of 4,000 simulations, only nine fell within the observed range of both NPP and LAI, but these predicted unrealistically complete dominance by either early hardwood or pine PFTs. A different set of seven simulations were ecologically plausible but under‐predicted observed NPP and LAI. Parameter uncertainty was large; NPP and LAI ranged from ~0% to >200% of their mean value, and any PFT could become dominant. The two parameters that contributed most to uncertainty in predicted NPP were plant–soil water conductance and growth respiration, both unobservable empirical coefficients. We conclude that (a) parameter uncertainty is more important than structural uncertainty, at least for ED‐2.2 in Upper Midwest forests and (b) simulating both productivity and plant community composition accurately without physically unrealistic parameters remains challenging for demographic vegetation models.
Spatial implications of digitization: State of the field and research agenda
Authors: Haefner Lukas , Sternberg Rolf 
Published: September 2020

AbstractDigitization is an influential megatrend that is quickly and comprehensively transforming economic spaces worldwide. Its disruptive power has not yet been fully developed but, despite a lack of topical empirical or theoretical research, it nevertheless seems clear that it will significantly affect the economic order within and between economic spaces and places. Currently, digitization is high on the policy agenda in many countries. Several related programs and initiatives combine expansion and improvement of digital infrastructure with efforts to reduce spatial economic inequality and to facilitate a general catch‐up process for lagging (often rural) regions. However, the idea that digitization can reduce spatial inequality remains highly controversial. This study aims to focus on the economic geography implications of digitization and to enrich the existing literature in two ways. First, the study overviews the state of research on the spatial consequences of digitization. Deploying a comprehensive literature review, this section discusses the primary theoretical and empirical results from two contradictory narratives on the ability of digitization to reinforce the death of distance and thus reduce spatial inequality. Second, we develop a research agenda concerning select fields of research that could appropriately be addressed in the future by economic geographers. These fields include spatial economic digitization effects, digital competencies, entrepreneurial activities, and innovation activities in both urban and rural regions. Closing the research gaps would contribute to the development of much‐needed policy measures.
6. FROM DECOLONIAL INDIGENOUS KNOWLEDGES TO VERNACULAR IDEAS IN SOUTHEAST ASIA
Authors: PARREÑAS JUNO SALAZAR 
Published: September 2020

ABSTRACTRelations between humans and orangutans in present‐day Malaysia show the historiographic and ethnographic problem of using the term “Indigenous knowledge.” Iban and Malay relationships with nonhuman animals are intersubjective and informed by particular subject formations, and indigeneity explains only one kind of relation. To analyze their relations simply in terms of decolonial Indigenous knowledge would be a culturally imperialist act from the Americas: decoloniality is specific to the development of racialization in the West via white settler colonialism, antiblack enslavement, and anti‐Indigenous exploitation and genocide. Instead, this article draws from southern African historical sources and Southeast Asian ethnographic sources to advocate a historiography and ethnography of vernaculars, both vernacular knowledge and vernacular ignorance, in order to avoid autochthonous and potentially xenophobic claims.
8. FINDING DECOLONIAL METAPHORS IN POSTCOLONIAL HISTORIES
Authors: ANDERSON WARWICK 
Published: September 2020

ABSTRACTThis is a reflection on the close relations of the writing of postcolonial histories and recent decolonial critiques, and on the tensions between them. Postcolonial historical analysis often has been preoccupied with hybridity and mixture, conjugation and adaptation, exchange and interaction—with subversions of sovereignty in contact zones, borderlands, and on the beach. As a structuralist formulation, decolonial historical binarism in contrast echoes Indigenous politics of self‐determination, even suggesting at times an ontological decoupling of settler and Indigenous histories and practices. Stringent decolonization of historical inquiry—implying the sabotage and superseding of settler colonial linguistic, narrative, and temporal conventions and the disturbing of standardized assumptions about evidence, agency, and authorship—would give us an epistemic assemblage perhaps not recognizable as “history.” Even if desirable, is that imaginable now except as metaphor or ideal?
THE DYNAMIC AND DISTRIBUTIONAL ASPECTS OF IMPORT TARIFFS
Authors: Lechthaler Wolfgang , Mileva Mariya 
Published: September 2020

AbstractWe use a dynamic trade model with two sectors and two types of workers to analyze the optimal setting of income‐generating tariffs. We study dynamic and distributional aspects focusing on the time horizon of policymakers and workers. The level of tariffs preferred by workers depends on the sector where they are employed as well as their skill class, with the relative weight of both aspects determined by the time horizon of the workers. Unskilled workers in the unskilled‐intensive sector are the ones most in favor of protectionism and might even benefit from a trade war.
STRUCTURAL CHANGE AND AGGREGATE EMPLOYMENT FLUCTUATIONS IN CHINA
Authors: Yao Wen , Zhu Xiaodong 
Published: September 2020

AbstractIn developed countries, aggregate employment is strongly procyclical and almost as volatile as output. In China, the correlation of aggregate employment and output is close to zero, and the volatility of aggregate employment is very low. We argue that the key to understanding aggregate employment fluctuations in China is labor reallocation between the agricultural and nonagricultural sectors, and that the income effect plays an important role in determining the labor reallocation dynamics in both the long run and short run.
Review of smartphone mobile applications for skin cancer detection: what are the changes in availability, functionality, and costs to users over time?
Authors: Kong Fleur W. , Horsham Caitlin , Ngoo Alexander , Soyer H. Peter , Janda Monika 
Published: September 2020

AbstractSmartphone applications (apps) are available to consumers for skin cancer prevention and early detection. This study aims to review changes over time in the skin cancer apps available to consumers as well as their functionality and costs. Apps for the prevention of skin cancer were searched on two major smartphone app stores (Android and iOS) in June 2019. The number, functionality, ratings, and price of the apps were described and compared to similar reviews of the skin cancer app market from 2014 to 2017. Overall, the June 2019 search identified 66 apps. Of 39 apps found in 2014, 30 were no longer available in 2019 representing an attrition rate of 77%; of 43 apps available in 2017, attrition was 46.5%. In 2019, 63.6% (n = 42/66) of apps were free to download compared to 53.5% (n = 23/43) in 2017. Input from clinician/professional bodies was evident for 47.0% (n = 31/66) of the apps in 2019 compared to 34.9% (15/43) in 2017. The most common app functionality offered in 2019 was monitoring/tracking of lesions at 48.5% (n = 32/66). Since 2014, there has been a steady increase in the number of apps available for the general public to support the prevention or early detection of skin cancers. There continues to be a high turnover of apps, and many apps still appear to lack clinician input and/or evidence for their safety and value.
γδ T cells and inflammatory skin diseases
Authors: Jee Mia Hamilton , Mraz Veronika , Geisler Carsten , Bonefeld Charlotte Menné 
Published: September 2020

AbstractApproximately 25% of the population suffers from skin diseases. The most common forms of skin diseases are the inflammatory skin diseases such as allergic contact dermatitis, psoriasis, and atopic dermatitis. These diseases are described as T cell–mediated diseases induced by either allergens or autoantigens. Classically, the focus has been on the role of αβ T cells, but it is becoming increasingly clear that γδ T cells play a central role in inflammatory skin diseases. In particular, an important role of IL‐17A–producing γδ T cells in these inflammatory skin diseases has been shown in various disease models in mice. Interestingly, various epidermal proteins, which appear to be linked to inflammatory conditions in the skin by yet undescribed mechanisms, are expressed by specific subsets of thymic epithelial cells and mutations in these proteins seem to affect γδ T cell development. The focus of this review is how mutations in epidermal proteins affect γδ T cell development and how γδ T cells, and in particular of IL‐17A–producing γδ T cells, contribute to inflammatory skin diseases such as allergic contact dermatitis, psoriasis, and atopic dermatitis.
A light‐touch routing optimization tool (RoOT) for vaccine and medical supply distribution in Mozambique
Authors: P.G. Petroianu Larissa , Zabinsky Zelda B. , Zameer Mariam , Chu Yi , Muteia Mamiza M. , Resende Mauricio G.C. , Coelho Aida L. , Wei Jiarui , Purty Turam , Draiva Abel , Lopes Alvaro 
Published: September 2020

AbstractPlanning vaccine distribution in rural and urban poor communities is challenging, due in part to inadequate vehicles, limited cold storage, road availability, and weather conditions. The University of Washington and VillageReach jointly developed and tested a user‐friendly, Excel spreadsheet based optimization tool for routing and scheduling to efficiently distribute vaccines and other medical commodities to health centers across Mozambique. This paper describes the tool and the process used to define the problem and obtain feedback from users during the development. The distribution and routing tool, named route optimization tool (RoOT), uses an indexing algorithm to optimize the routes under constrained resources. Numerical results are presented using five datasets, three realistic and two artificial datasets. RoOT can be used in routine or emergency situations, and may be easily adapted to include other products, regions, or logistic problems.