47 research outputs found
Probabilistic 21st and 22nd century sea-level projections at a global network of tide-gauge sites
No full textSea-level rise due to both climate change and non-climatic factors threatens coastal settle- ments, infrastructure, and ecosystems. Projections of mean global sea-level (GSL) rise provide insufficient information to plan adaptive responses; local decisions require local projections that accommodate dif- ferent risk tolerances and time frames and that can be linked to storm surge projections. Here we present a global set of local sea-level (LSL) projections to inform decisions on timescales ranging from the com- ing decades through the 22nd century. We provide complete probability distributions, informed by a combination of expert community assessment, expert elicitation, and process modeling. Between the years 2000 and 2100, we project a very likely (90% probability) GSL rise of 0.5 – 1.2 m under representa- tive concentration pathway (RCP) 8.5, 0.4 – 0.9 m under RCP 4.5, and 0.3 – 0.8 m under RCP 2.6. Site-to-site differences in LSL projections are due to varying non-climatic background uplift or subsidence, oceano- graphic effects, and spatially variable responses of the geoid and the lithosphere to shrinking land ice. The Antarctic ice sheet (AIS) constitutes a growing share of variance in GSL and LSL projections. In the global average and at many locations, it is the dominant source of variance in late 21st century projections, though at some sites oceanographic processes contribute the largest share throughout the century. LSL rise dramatically reshapes flood risk, greatly increasing the expected number of “1-in-10” and “1-in-100” year events.Peer reviewe
The effect of optimized lighting conditions on feather pecking and production of laying hens
No full textFeather pecking is one of the major problems in commercially kept laying hens. The current research considers the relevance of colour of light in the feather pecking problem
Graphical User Interface for Silk-A Link Discovery Framework for the Web of Data
No full textThe publication of Linked datasets on the Linked Open Data cloud has been increasing. Only very few of these datasets are interlinked with each other. Lots of tools have been developed for making interlinking between linked datasets. Silk-A Link Discovery Framework is a tool that allows one to do interlinking between data items within different Linked Data sources. The Silk Linking Specification Language (Silk-LSL) allows the user to write a script for specifying conditions that need to be met in order for resource to be interlinked. The Silk- LSL file can be either written by manually or generated with the help of tools. The manual approach requires skilled users and hard work for manually discovering the classes and classes’ properties of the datasets that need to be interlinked. Hence, an automatic approach for solving this problem is needed. This thesis document proposes an application which guides the users through the process of specifying linking conditions during the creation of the Silk LSL program. The tool is called Silk Magic, and helps users in the process of creating an LSL file. The application provides various features for editing linking conditions. These features provide an interactive tree view for specifying the linking conditions that are required in order to generate the file. The Silk Magic application with its three main features: Similarity functions editor, Query Builder editor and Path Expression editor are the main contributions of this Master Thesis.Information ArchitectureWeb Information SystemElectrical Engineering, Mathematics and Computer Scienc
Complete reducibility of the pseudovariety LS1
No full textPalavras-chave: Semigroup; pseudovariety; pseudoword; system of equations; implicit signature; complete tameness; complete reducibility; local semillatice; infinite word.In this paper we prove that the pseudovariety LSl of local semilattices is completely κ-reducible, where κ is the implicit signature consisting of the multiplication and the ω-power. Informally speaking, given a finite equation system with rational constraints, the existence of a solution by pseudowords of the system over LSl implies the existence of a solution by κ-words of the system over LSl satisfying the same constraints.Both authors acknowledge partial support by the project PTDC/MAT/65481/2006. The work of the first author was supported, in part, by Fundação para a Ciência e a Tecnologia (FCT) through the Centro de Matemática da Universidade do Minho, which is partly funded by the European Community Fund FEDER
My Private Lead Service Line
No full textHomeowners’ decisions to replace their lead service lines (LSLs) can be complicated by factors including understanding of the science, perceptions of lead exposure risks, and cost of the work. First-draw and five-minute flush samples may not capture the peak lead concentration, further complicating a customer\u27s replacement decision. In the author\u27s case, sequential sampling indicated that LSL replacement for her home significantly lowered lead concentrations after stagnation
Edible Environmental Enrichments in Littered Housing Systems: Do Their Effects on Integument Condition Differ Between Commercial Laying Hen Strains?
No full textThe aim of this study was to investigate the effect of additional enrichment materials (EMs; pecking stones and alfalfa bales) on the occurrence of plumage damage, skin injuries, and toe injuries, with an emphasis on the possible differences between commercial hybrid strains of laying hens. During rearing (weeks 1–18, 16 compartments, 4000 pullets) and laying periods (weeks 21–72, 24 compartments, 2808 hens) in a littered housing system, EMs were permanently provided to the study groups (EXP), while control groups (CON) did not receive additional EM. In a two-factorial study design (two groups with four strains) with 351 hens per variant, the brown egg-laying Lohmann Brown classic (LB) and Bovans Brown (BB) strains as well as the white egg-laying Lohmann Selected Leghorn classic (LSL) and Dekalb White (DW) strains were investigated. Compared to the CON, the EXP showed reduced body mass during rearing (p < 0.001) and reduced albumen consistency in the laying period (p < 0.001). Regarding integument condition, the LSL in the EXP showed more toe injuries than in the CON (p = 0.018). Remarkably, genotype-environment interactions between strains and groups were evident (p < 0.001). In groups with an EM supply, plumage damage decreased in LB (p ≤ 0.033) and LSL (p ≤ 0.005) but increased in BB (p ≤ 0.003). Moreover, there were fewer skin injuries in LSL (p = 0.001) but more in BB (p = 0.001) in groups with access to EM. In view of the diverging effects between strains, future practical recommendations for laying hen husbandry should be strain-specific.:Introduction
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Medullary bone attributes in aged Lohmann LSL-lite layers fed different levels of calcium and top-dressed 25-hydroxy vitamin D3
No full textStructural bone depletion over the course of lay cycle predisposes hens to skeletal problems. We investigated the effects of dietary calcium (Ca) and top-dressed 25-hydroxy vitamin D3 (25OHD3) on attributes [relative weight, ash content (AC), and ash concentration (ACN)] in whole ulna, femur, tibia, and subparts of femur and tibia (epiphysis, medullary, and cortical) in 74-wk-old Lohmann LSL-lite layers. Four levels of Ca (3.0%, 3.5%, 4.0%, and 4.5%) and three levels of 25OHD3 (0, 69, and 138 μg kg−1) were tested. All diets had basal level of 3300 IU of vitamin D3 kg−1. Eighty-four, 74-wk-old hens were placed in individual cages, and 13 spare hens were sacrificed for baseline samples. Diets (n = 7) were fed to 81 wks of age, and hens were sacrificed for bone samples. There were no (P > 0.05) diet effects on whole bone attributes. Interaction (P < 0.05) between Ca and 25OHD3 on femur subparts was such that 25OHD3 linearly increased medullary ACN and concomitantly decreased cortical ACN at all Ca levels. In tibia, 25OHD3 (P < 0.05) increased AC and ACN in medullary and reduced these parameters in cortical. The results suggested that subparts and not whole medullary bone attributes are more amenable to dietary interventions in aged hens.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
A scoping review of the use of lab streaming layer framework in virtual and augmented reality research
No full textThis version of the article has been accepted for publication in Virtual Reality, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s10055-023-00799-8. © The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature 2023. This article will be embargoed until 05/02/2024.The use of multimodal data allows excellent opportunities for human–computer interaction research and novel techniques regarding virtual and augmented reality (VR/AR) experiences. Collecting, coordinating, and synchronizing a large amount of data from multiple VR/AR hardware while maintaining a high framerate can be a daunting task, despite the compelling nature of multimodal data. The Lab Streaming Layer (LSL) is an open-source framework that enables the synchronous collection of various types of multimodal data, unlike existing expensive alternatives. However, despite its potential, this framework has not been fully adopted by the VR/AR research community. In this paper, we present a guideline of the LSL framework’s use in VR/AR research as well as report current trends by performing a comprehensive literature review on the subject. We extract 549 publications using LSL from January 2015 to March 2022. We analyze types of data, displays, and targeted application areas. We describe in-depth reviews of 38 selected papers and provide use of LSL in the VR/AR research community while highlighting benefits, challenges, and future opportunities.This work was supported by grants from the National Institute of General Medical Sciences (P20 GM103446) from the National Institutes of Health, National Science Foundation (2222663), Unidel Foundation, University of Delaware College of Engineering, University of Delaware Research Foundation, Amazon Research Awards, and the Natural Sciences and Engineering Research Council of Canada (RGPIN-2022-03294)
A COMPARISON OF FPGA IMPLEMENTATIONS OF THE A PRIORI ERROR- FEEDBACK LSL ALGORITHM USING LOGARITHMIC ARITHMETIC
No full textThis work was supported by the Ministry of Education of the Czech republic under Project LN00B096 This report constitutes an unrefined manuscript, which is intended to be submitted for publication. Any opinions and conclusions expressed in this report are those of the author(s) and do not necessarily represent the views of the Institute.
Changes in ripening-related quality traits of long shelf life tomatoes as influenced by water deficit and short-term postharvest storage
No full textThe diversity preserved within the European long shelf life tomato landraces (LSL) is a unique source to design high quality tomato products better adapted to changing environmental conditions and, thereby, to reduce food losses. The adaptation of LSL to water deficit (WD) management practices and their postharvest keeping ability can be used as tools to concomitantly enhance fruit quality and sustainable production. In this study, we investigated the effect of WD conditions and the plant growing environment (open field vs. tunnel) on quality traits of two genotypes of the Penjar LSL variety (modern hybrid (MV) and landrace (LR)). Changes in ripening-related quality traits (fruit ethylene production, respiration rate, firmness, color, soluble solids content, titratable acidity and the content of antioxidants, as well as specific sugars and acids) in response to the different preharvest factors were evaluated at the time of harvest and after a short period of storage (30 days), following actual commercial practices. Significant differences among genotypes were encountered for most quality traits at the time of harvest and higher intra- and inter-environment heterogeneity was observed in the LR than in the MV genotype. In general, Penjar tomatoes exhibit a low physiological activity (ethylene production, 0.56–1.33 µL kg-1 h-1, respiration rate: 0.015–0.026 mg CO2 kg-1 h-1) at harvest. In both genotypes, WD increased to a different extent the fruit external color (redness, lightness) as well as the sensory (SSC) and nutritional (antioxidant capacity) fruit profiles. By contrast, the growing environment had little impact on most fruit quality traits. Postharvest storage only led to a slight reduction in the fruit respiration and ethylene production, lower sugars and acids content, enhanced color and no firmness changes. Overall, the results from this study demonstrate that selecting the appropriate genotypes is the most important step towards the design of high-quality LSL tomatoes, while WD and short-term storage can be used by farmers as a strategy to differentiate the product quality in specific market niches.This research was funded by the Department of Agriculture of the Generalitat de Catalunya
(grant number 562102820162A) and by Federació Selmar and Cooperativa Conca de la Tordera who
managed the experimental fields. The author Joan Casals is a Serra Hunter Fellow.Postprint (published version
