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184 results for “variability analysis”
Fig. 6 in Fractal analysis of ostracod shell variability: A comparison with geometric and classic morphometrics
Fig. 6. Location of landmarks chose on Krithe valve for shape analysis.
Supplementary files: Machine Learning Insights into Türkiye's Climate Variability: Predictive Modelling and Spatial Analysis
<p>This dataset and python code were used in the study titled "Machine Learning Insights into Türkiye's Climate Variability: Predictive Modelling and Spatial Analysis".</p>
Effects of thermal fluctuations on biological processes: A meta-analysis of experiments manipulating thermal variability
<p>Thermal variability is a key driver of ecological processes, affecting organisms and populations across multiple temporal scales. Despite the ubiquity of variation, biologists lack a quantitative synthesis of the observed ecological consequences of thermal variability across a wide range of taxa, phenotypic traits, and experimental designs. Here, we conduct a meta-analysis to investigate how properties of organisms, their experienced thermal regime, and whether thermal variability is experienced in either the past (prior to an assay) or present (during the assay) affect performance, relative to the performance of organisms experiencing constant thermal environments. Our results – which draw upon 1,712 effect sizes from 75 studies – indicate that the effects of thermal variability are not unidirectional and become more negative as mean temperature and fluctuation range increase. Exposure to variation in the past decreases performance to a greater extent than variation experienced in the present and increases the costs to performance more than diminishing benefits across a broad set of empirical studies. Further, we identify life history attributes that predictably modify the ecological response to variation. Our findings demonstrate that effects of thermal variability on performance are context-dependent, yet negative outcomes may be heightened in warmer, more variable climates.</p>
Data and code for "Brehm et al. (2023) The complexity of micro- and nanoplastic research in the genus Daphnia – A systematic review of study variability and a meta-analysis of immobilization rates"
<p>All data and R code for</p> <p><strong>Brehm, J., Ritschar, S., Laforsch, C. and Mair, M.M. (2023). The complexity of micro- and nanoplastic research in the genus <em>Daphnia</em> – A systematic review of study variability and a meta-analysis of immobilization rates. <em>Journal of Hazardous Materials</em> 458: 131839. (<a href="https://doi.org/10.1016/j.jhazmat.2023.131839">https://doi.org/10.1016/j.jhazmat.2023.131839</a>)</strong></p> <p><em>Abstract</em></p> <p>In recent years, the number of publications on nano- and microplastic particles (NMPs) effects on freshwater organisms has increased rapidly. Freshwater crustaceans of the genus <em>Daphnia</em> are widely used in ecotoxicological research as model organisms for assessing the impact of NMPs. However, the diversity of experimental designs in these studies makes conclusions about the general impact of NMPs on <em>Daphnia</em> challenging. To approach this, we systematically reviewed the literature on NMP effects on <em>Daphnia</em> and summarized the diversity of test organisms, experimental conditions, NMP properties and measured endpoints to identify gaps in our knowledge of NMP effects on <em>Daphnia</em>. We use a meta-analysis on mortality and immobilization rates extracted from the compiled literature to illustrate how NMP properties, study parameters and the biology of <em>Daphnia</em> can impact outcomes in toxicity bioassays. In addition, we investigate the extent to which the available data can be used to predict the toxicity of untested NMPs based on the extracted parameters. Based on our results, we argue that focusing on a more diverse set of NMP properties combined with a more detailed characterization of the particles in future studies will help to fill current research gaps, improve predictive models and allow the identification of NMP properties linked to toxicity.</p>
A Benchmark Analytical Solution for Variable Viscosity Flow in Fractured Media: Development and Comparative Analysis with Numerical Simulations
<p>This data is associated with <strong>(a) Figure 3.</strong> Comparison between the velocities obtained through analytical calculations and those estimated numerically, and <strong>(b) Figure 4.</strong> Comparison of the BTCs obtained through analytical calculations and those estimated numerically.</p>
Dispersal increases spatial synchrony of populations but has weak effects on population variability: a meta-analysis
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Variable social organisation and breeding system of a social parrot revealed by genetic analysis
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(variable) Frequency-based Layer Identification Procedure (FLIP and vFLIP) for spectrolaminar analysis
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Effects of thermal fluctuations on biological processes: A meta-analysis of experiments manipulating thermal variability
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Data for analysis of variables influencing breeding success in the Canarian houbara
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Data from: Characteristics of university students supported by counseling services: analysis of psychological tests and pulse rate variability
Objective <p>Mental health is an essential issue during adolescence. The number of students who use counseling services is increasing in universities. We attempted to confirm the characteristics of the students who access counseling services using both psychological tests and pulse rate variability (PRV) for better support for students' academic success.</p> Methods <p>We recruited the participants for this study from the students who had counseling sessions at Kanazawa University (Group S). As a control group, we also recruited students who had no experience in counseling services (Group H). We obtained health information from the database of annual health checkups. Participants received the Wechsler Adult Intelligence Scale (WAIS) III, Autism-Spectrum Quotient (AQ), Sukemune-Hiew (S-H) Resilience Test, and State-Trait Anxiety Inventory-JYZ (STAI). We also studied the SF-12v2 Health Survey. As a physiological test, we examined the spectral analyses of pulse rate variability (PRV) by accelerating plethysmography. We performed a linear analysis of PRV for LF, HF, and LF/HF as indexes of autonomic nervous function. We also conducted a non-linear analysis of PRV for the largest Lyapunov exponent (LLE). Additionally, we examined participants' blood for autoantibodies against glutamate decarboxylase (GAD) 65.</p> Results <p>A total of 105 students participated in this study. Group S had 37 participants (Male: 26, Female: 11), and Group H had 68 participants (Male: 27, Female 41). <a name="_Hlk24561145">There were five males and one female who had diagnoses of autism spectrum disorder (ASD), and three males and no female with attention deficit hyperactivity disorder (ADHD) by medical institutes in Group S. Additionally, four males and two females had diagnoses of ASD with ADHD by medical institutes in Group S.</a> A male with ASD in Group S had epilepsy. The students of Group S had characteristics as follows: 1) lower power of WMI despite high Full-Scale IQ, 2) higher ASD traits especially in Male, 3) lower resilience powers, 4) higher anxiety trait, 5) lower QOL in Role/social component in both Male and Female, 6) lower QOL in Mental component in Male 7) shifting of autonomic nervous balance toward higher sympathetic activity.</p> Conclusion <p>We could confirm the characteristics of students who visited counseling rooms for mental support. We also found gender differences in specificities of Group S. The educational system is changing rapidly to adjust social requests. These changes make conflict with the features of students of Group S. We should think about appropriate supports for the students who would pioneer the future of humanity.</p>
Data from: Analysis of morphological variability in the clam shrimp Eosestheria middendorfii (Crustacea, Spinicaudata) from the Lower Cretaceous of China, and its implications for spinicaudatan taxonomy
Unresolved taxonomic issues regarding spinicaudatans, clam shrimps that formed the most abundant faunal element in the lacustrine Barremian to Aptian Yixian Formation, have hampered palaeoecological and evolutionary interpretations of this key fossil group. Here, we analyse morphological variability in East Asian clam-shrimp taxa by quantifying: (1) size and shape; and (2) ornamental features (radial lirae distances). Intergeneric variability was examined using 51 specimens of various East Asian Mesozoic taxa, 16 of which were chosen for a taxonomic revision of the 10 species described from the Yixian Formation of western Liaoning. Geometric morphometrics proved to be effective for the separation of genera, while the quantification of ornamental features was species-diagnostic. Various authors have previously indicated the possibility that East Asian clam-shrimp species have been split excessively, a criticism that has been confirmed by our analyses. According to our results, four of the ten species described from the Yixian Formation are valid, of which one might represent a junior synonym of Diestheria jeholensis; five taxon names represent junior synonyms of Eosestheria middendorfii (Jones), and one a nomen dubium. According to lirae distances and analysis of shape, Eosestheria fuxinensis, the original type species of Eosestheria, is synonymous with the type of Diestheria. Therefore, a new type species for Eosestheria is warranted and here fixed as E. middendorfii. This taxonomic revision questions the high level of clam-shrimp diversity recognized within the Yixian Formation, and indicates that many of the species described in fact represent various ontogenetic stages of E. middendorfii.
Data from: Phylogeny of Mycoplasma bovis isolates from Hungary based on multi locus sequence typing and multiple-locus variable-number tandem repeat analysis
Background: Mycoplasma bovis is an important pathogen causing pneumonia, mastitis and arthritis in cattle worldwide. As this agent is primarily transmitted by direct contact and spread through animal movements, efficient genotyping systems are essential for the monitoring of the disease and for epidemiological investigations. The aim of this study was to compare and evaluate the multi locus sequence typing (MLST) and the multiple-locus variable-number tandem-repeat (VNTR) analysis (MLVA) through the genetic characterization of M. bovis isolates from Hungary. Results: Thirty one Hungarian M. bovis isolates grouped into two clades by MLST. Two strains had the same sequence type (ST) as reference strain PG45, while the other twenty nine Hungarian isolates formed a novel clade comprising five subclades. Isolates originating from the same herds had the same STs except for one case. The same isolates formed two main clades and several subclades and branches by MLVA. One clade contained the reference strain PG45 and three isolates, while the other main clade comprised the rest of the strains. Within-herd strain divergence was also detected by MLVA. Little congruence was found between the results of the two typing systems. Conclusions: MLST is generally considered an intermediate scale typing method and it was found to be discriminatory among the Hungarian M. bovis isolates. MLVA proved to be an appropriate fine scale typing tool for M. bovis as this method was able to distinguish closely related strains isolated from the same farm. We recommend the combined use of the two methods for the genotyping of M. bovis isolates. Strains have to be characterized first by MLST followed by the fine scale typing of identical STs with MLVA.
High resolution, interactive, or animated versions of illustrations used in the paper "Quantifying the Dunkelflaute: An analysis of variable renewable energy droughts in Europe"
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Supplementary files to article "Intra- and interexaminer measurement variability analysis of an orthodontic gauge device to determine incisor occlusal surface angles in the horse"
<p>Supplementary files to article "Intra- and interexaminer measurement variability analysis of an orthodontic gauge device to determine incisor occlusal plane angles in the horse" submitted to Veterinary Sciences - Veterinary Surgery (Section) - Current Research in Equine Dentistry (Special Issue); submitted 31st May 2022</p>
Supplementary data- Detailed Geogenic Radon Potential Mapping Using Geospatial Analysis of Multiple Geo-variables. A Case Study from a High-Risk Area in SE Ireland.
<p>Supplementary Data: all the data produced and used, statistical analysis, mathematical proofs diagnostic tests, regression models and additional charts and tables</p> <p>Detailed Geogenic Radon Potential Mapping Using Geospatial Analysis of Multiple Geo-variables. A Case Study from a High-Risk Area in SE Ireland. </p>
FIGURE 7 in Taxonomic revision of Cypridopsis silvestrii comb. nov. (Ostracoda, Crustacea) from Patagonia, Argentina with morphometric analysis of their intraspecific shape variability and sexual dimorphism
FIGURE 7. Nonmetric Multidimensional Scaling (n-MDS) plot for male and female outlines, normalized for area from ET lake. Inset shows superposition of the virtual mean shape outline of males (light blue) and females (black).
FIGURE 5. Cypridopsis silvestrii comb. nov. A in Taxonomic revision of Cypridopsis silvestrii comb. nov. (Ostracoda, Crustacea) from Patagonia, Argentina with morphometric analysis of their intraspecific shape variability and sexual dimorphism
FIGURE 5. Cypridopsis silvestrii comb. nov. A. Hemipenis (UNC-PMIC 160 male). B. T1 (UNC-PMIC 153 ES female). C. Lpp (UNC-PMIC 161 male). D. Rpp (UNC-PMIC 161 male). E Zenker organ (UNC-PMIC 160 male). F. T2 (UNC-PMIC 153 ES female). G. Genital hooks (UNC-PMIC 154 ES female). H. T3 (UNC-PMIC 153 ES female). I.UR (UNC-PMIC 154 ES female). Scale bar: 100 µm.
FIGURE 1 in Taxonomic revision of Cypridopsis silvestrii comb. nov. (Ostracoda, Crustacea) from Patagonia, Argentina with morphometric analysis of their intraspecific shape variability and sexual dimorphism
FIGURE 1. Geographic location of the surveyed lakes. The upper left map shows Argentina with the Patagonian region in dark grey. The lower left map shows the sampled region with the four surveyed areas (black boxes), which correspond to the regions A, B, C, and D. Grey polygons correspond to water bodies (surveyed in black). The legends indicate the altitude in meters above sea level (masl) based on a digital elevation model (DEM; source www.earthexplorer.usgs.gov.gov), where the upper (A and B), and lower (C and D) panels share the same scale.
FIGURE 2. Cypridopsis silvestrii comb. nov. A in Taxonomic revision of Cypridopsis silvestrii comb. nov. (Ostracoda, Crustacea) from Patagonia, Argentina with morphometric analysis of their intraspecific shape variability and sexual dimorphism
FIGURE 2. Cypridopsis silvestrii comb. nov. A ES female RV external view (UNC-PMIC 149). B ET female RV external view (UNC-PMIC 153). C ET male RV external view (UNC-PMIC 158). D–E ES female LV external view (PMIC 148). F ET male LV external view (UNC-PMIC 158), G ET female Cp dorsal view (UNC-PMIC 154). H ET male Cp dorsal view (UNC- PMIC 159). I–K ES female RV internal view (PMIC 149). L–N ES female LV internal view (UNC-PMIC 148). O ET female Cp ventral view (UNC-PMIC 155). P ETC RV external view (UNC-PMIC 162). Q ETC LV internal view (UNC-PMIC 163). R He female LV internal view (UNC-PMIC 164). Scale bar= 300 µm; E= 50 µm and I, K, L, N= 100 µm.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.