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10,767 results for “Contribution”
Fig. 6 in Contribution to the Siberian Chrysididae (Hymenoptera). Part 2.
Fig. 6. Hedychridium propodeale Rosa, sp. n., holotype, ♀: A – head, frontal view; B –
Figure 4 in Contribution to the Pachylaelapidae (Acari: Mesostigmata) fauna in some parts of Guilan province of Iran
Figure 4. Ventral idiosoma of Onchodellus squamosus (female). Scale bar = 100 μm.
Figure 1 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 1. Deinodryinus brasiliensis sp. nov. (A) Habitus, lateral view; (B) Head, frontal view; (C) Head, dorsal view; (D) Pronotum, mesoscutum and mesoscutellum, dorsal view; (E) Mesosoma, lateral view; (F) Propodeum, posterior view. Scale bars: 1.0 mm.
Figure 3 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 3. Fore wing and protarsus of holotypes of Deinodryinus species. (A, C) Deinodryinus brasiliensis sp. nov. (A, fore wing, C, fore tarsus); (B, D) Deinodryinus mexicanus sp. nov. (B, fore wing, D, fore tarsus). Scale bars: 1.0 mm.
Figure 5 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 5. Eletromicrography of female species of Lonchodryinus Kieffer and Deinodryinus. (A-B) Lonchodryinus tricolor Brazil, Aracatu (BA): (A) Mesosoma (except propodeum), dorsal view; (B) Chela; (C) Chela, Deinodryinus mexicanus sp. nov.; (D) Chela, Deinodryinus brasiliensis sp. nov. Scale bars: (A) 500 µm; (B-D) 200 µm.
Figure 7 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 7. Geographic distribution of Lonchodryinus tricolor in the Neotropical region: red circle, type locality; blue circle, records presented by Olmi & Virla, 2014; green circle, new records; yellow circle, records presented by Martins et al., 2015.
Figure 2 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 2. Deinodryinus mexicanus sp. nov. (A) Habitus, lateral view; (B) Head, frontal view; (C) Head, dorsal view; (D) Pronotum, mesoscutum and mesoscutellum, dorsal view; (E) Mesosoma, lateral view; (F) Propodeum, posterior view. Scale bars: (A-E) 1.0 mm (F) 0.5 mm.
Figure 4 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 4. Lonchodryinus tricolor Kieffer. (A-D) Female from Brazil, Aracatu (BA): (A) Habitus, lateral view; (B) Head, frontal view; (C) Pronotum, mesoscutum and mesoscutellum, dorsal view; (D) Head, dorsal view. (E-F) Holotype (MNHN, EY 11379): (E) Habitus, lateral view; (F) Labels. Scale bars: 1.0 mm.
Figure 6 in Contribution to the knowledge of the Neotropical Anteoninae (Hymenoptera, Dryinidae), with the descriptions of two new species and new records
Figure 6. Geographic distribution of new species of Deinodryinus from the Neotropical region: Deinodryinus brasiliensis sp. nov.: red circle, holotype; blue circle, paratypes; Deinodryinus mexicanus sp. nov.: red squash, holotype; blue squash, paratype.
Data from: Multiple origins of lipid-based structural colors contribute to a gradient of fruit colors in Viburnum (Adoxaceae)
<p>Structural color is poorly known in plants relative to animals. In fruits, only a handful of cases have been described, including in <em>Viburnum</em> <em>tinus</em> where the blue color results from a disordered multilayered reflector made of lipid droplets. Here, we examine the broader evolutionary context of fruit structural color across the genus <em>Viburnum</em>. We obtained fresh and herbarium fruit material from 30 <em>Viburnum</em> species spanning the phylogeny and used transmission electron microscopy, optical simulations, and ancestral state reconstruction to (1) identify the presence/absence of photonic structures in each species, (2) understand the mechanism producing structural color in newly identified species, (3) relate the development of cell wall structure to reflectance in <em>V</em>. <em>dentatum</em>, and (4) describe the evolution of cell-wall architecture across <em>Viburnum</em>. We identify at least two (possibly three) origins of blue fruit color in <em>Viburnum</em>, both of which produce large photonic structures made of lipid droplets embedded in the cell wall and which reflect blue light. Examining species that may exhibit structural color in combination with anthocyanin and carotenoid pigments, rather than focusing on the most extreme examples, will yield further insights into the diversity, ecology and evolution of fruit color.</p>
The dataset of five chloroplast regions used in: A contribution to Gymnosphaera (Cyatheaceae) in mainland Asia: Two new species, reinstatement of Cyathea bonii, and their phylogenetic positions
<p><em>Gymnosphaera</em> represents a minor lineage within the scaly tree-fern family Cyatheaceae. Tropical and subtropical mainland Asia is a main distribution area of <em>Gymnosphaera</em>. However, the species diversity of <em>Gymnosphaera</em> is currently incompletely known in mainland Asia due to lacking critical revision. Here we present new findings of species diversity and their relationships with mainland Asian <em>Gymnosphaera</em> based on field surveys, the examination of herbarium collections, and phylogenetic analyses of sequences of multiple chloroplast and nuclear regions. Two new species, <em>G. saxicola</em> from southwestern Yunnan and <em>G. bachmaensis</em> from central Vietnam are established. Traditionally recognized <em>G. podophylla </em>is revealed to be a complex, from which <em>G. bonii</em> is reinstated as a distinct species. Our phylogenetic analyses identified four clades within <em>Gymnosphaera</em> in mainland Asia: <em>G. denticulata</em> clade, <em>G. gigantea</em> clade, <em>G. podophylla </em>clade, and <em>G. salletii </em>clade. The new species <em>G. saxicola,</em> which is special for its saxicolous habitat, was resolved as a sister to <em>G. austroyunnanensis</em> in the <em>G. salletii</em> clade. The newly discovered <em>G. bachmaensis</em>, which is characterized especially by the spathulate frond, was positioned in the <em>G. podophylla</em> clade, being sister to <em>G. bonii</em>. The mountainous region from south-central Vietnam northwards to western Yunnan is a diverse center of <em>Gymnosphaera</em> and more species of this group are probably to be discovered there.</p>
Input and Output files for "Contributions to Streamflow and Sea Level Rise in High Mountain Asia from 2003-2009 Glacier Recession"
<p>All files below were prepared by Collin B. Lawrence. </p> <p>All ARCIDs correspond to the HydroSHEDS Dataset for Asia (Lehner et al., 2008). (http://www.hydrosheds.org/)</p> <p>GLDAS data are from the Global Land Data Assimilation System (Rodell et al., 2004). (https://ldas.gsfc.nasa.gov/gldas/)</p> <p>Q_JJA_(model) contains three columns: 1) ARCID, 2) subsurface and surface runoff for that particular reach, and 3) accumulated subsurface and surface runoff. All flows are in m<sup>3</sup> s<sup>-1</sup>, and are averaged for the months of June, July, and August from the years 2003 – 2009. CLM, MOSAIC, NOAH, and VIC were the subset of models used from the Global Land Data Assimilation System (GLDAS).</p> <p>Q_annual_(model) contains three columns: 1) ARCID, 2) subsurface and surface runoff for that particular reach, and 3) accumulated subsurface and surface runoff. All flows are in m<sup>3</sup> s<sup>-1</sup>, and are yearly averages for the years 2003 – 2009. CLM, MOSAIC, NOAH, and VIC were the subset of models used from the Global Land Data Assimilation System (GLDAS).</p> <p>phi_i_JJA is the accumulated subsurface and surface runoff for the CLM, MOSAIC, NOAH, and VIC model average. The June, July, and August output was averaged over the years 2003 – 2009. Column 1 is ARCID and the accumulated runoff is expressed in m<sup>3</sup> s<sup>-1</sup>.</p> <p>phi_i_JJA_err is the standard error of the model mean in phi_i_JJA.</p> <p>phi_g_JJA contains the accumulated glacier recession flow in m<sup>3</sup> s<sup>-1 </sup>for the months of June, July, August from 2003 - 2009.</p> <p>phi_g_JJA_err is the standard error of the model mean in phi_g_JJA.</p> <p>phi_g_annual contains the annually averaged accumulated glacier recession flow in m<sup>3</sup> s<sup>-1 </sup>for 2003 – 2009.</p> <p>lambda.csv contains the fraction of streamflow from glacier recession.</p>
Stack Overflow's Hidden Nuances: How Does Zip Code Define User Contribution?
<p>Collective intelligence constitutes a foundational element within online community question-and-answering (CQA) platforms, such as Stack Overflow, being the source of most programming-related issues. Despite this relevance, concerns remain regarding issues surrounding user participation. Precedent research tends to focus on simple numerical measurements to analyse participation, which may sideline the inherent, subtler aspects.</p> <p>The proposed study aims to bridge this gap by operationalising 11 distinct metrics to represent user participation, behaviour, and community value across different regions of the USA. The study also conducts inductive content analysis to understand the impact of regional contextual factors on users' knowledge sharing patterns.</p> <p>This replication package is provided for those interested in further examining our research methodology.</p>
Stack Overflow's Hidden Nuances: How Does Zip Code Define User Contribution?
<p>--Collective intelligence constitutes a foundational element within online community question-and-answering (CQA) platforms, such as Stack Overflow, being the source of most programming-related issues. Despite this relevance, concerns remain regarding issues surrounding user participation. Precedent research tends to focus on simple numerical measurements to analyse participation, which may sideline the inherent, subtler aspects.</p> <p>The proposed study aims to bridge this gap by operationalising 11 distinct metrics to represent user participation, behaviour, and community value across different regions of the USA. The study also conducts inductive content analysis to understand the impact of regional contextual factors on users' knowledge sharing patterns.</p> <p>This replication package is provided for those interested in further examining our research methodology.</p>
Elevated perceived stress in university students due to COVID-19 pandemic: Potential contributing factors in a propensity-score matched sample
<p><strong>Open Data and Open Materials of: </strong></p> <p><strong>Elevated perceived stress in university students due to COVID-19 pandemic: Potential contributing factors in a propensity-score matched sample. </strong></p> <p><strong><em>Scandinavian Journal Of Psychology</em>.</strong></p> <p><strong>Abstract</strong></p> <p><strong>Objective</strong>: Onset of the Coronavirus Disease 2019 (COVID)-pandemic has increased students’ perceived burdens. The current study aimed to examine COVID-related changes and to identify potential factors that contribute to students’ stress.</p> <p><strong>Method</strong>: Adopting a cross-sectional cohort-study design, we examined perceived stress, depressive and anxiety symptoms with a specific focus on the role of study-related variables such as perceived study-related demands, study-related resources, academic procrastination, and stress enhancing beliefs. Two cohorts (<em>N</em><sub>pre-COVID</sub>=2175;<em>N</em><sub>COVID</sub>=959) were recruited at the same university and matched with regard to their propensity score (age, gender, semester).</p> <p><strong>Results</strong>: Compared to the pre-COVID cohort, university students in the COVID-cohort reported more perceived stress, more depressive and anxiety symptoms, more academic procrastination due to fear of failure, more stress-enhancing beliefs, more distress due to the housing situation, and more perceived study-related challenges (Cohen’s <em>d</em>=.15–.45). A stepwise regression analysis identified depressive symptoms, procrastination due to fear of failure, general self-efficacy, increased study demands, perceived difficulties with to self-organised learning, distress due to housing, and stress enhancing beliefs as predictors of perceived stress in the COVID-cohort.</p> <p><strong>Discussion</strong>: Findings suggest that the switch to online-only education increased the study-related burden for students, primarily due to exams being replaced by a greater amount of regular coursework and imposing demands on self-organised learning. Possibly, stress enhancing beliefs and procrastination due to fear of failure might have been elevated due to less opportunity for social referencing and lack of felt social support by peer students.</p> <p><strong>Conclusion</strong>: Experienced increased burden in students during the COVID pandemic was mostly accounted for by the lack of perceived individual resources rather than by the increase in objective study-related demands.</p>
Data from: The neurodevelopmental genes alan shepard and Neuroglian contribute to female mate preference in African Drosophila melanogaster
<p>Mate choice is a key trait that determines fitness for most sexually reproducing organisms, with females often being the choosy sex. Female preference often results in strong selection on male traits that can drive rapid divergence of traits and preferences between lineages, leading to reproductive isolation. Despite this fundamental property of female mate choice, very few loci have been identified that contribute to mate choice and reproductive isolation. We used a combination of population genetics, quantitative complementation tests, and behavioral assays to demonstrate that alan shepard and Neuroglian contribute to female mate choice, and could contribute to partial reproductive isolation between populations of Drosophila melanogaster. Our study is among the first to identify genes that contribute to female mate preference in this historically important system, where female preference is an active premating barrier to reproduction. The identification of loci that are primarily known for their roles in neurodevelopment provides intriguing questions of how female mate preference evolves in populations via changes in sensory system and higher learning brain centers.</p>
Code for: Landform and lithospheric development contribute the assembly of mountain floras in China
<p>Although it is well documented that mountains tend to exhibit high biodiversity, how geological processes affect the assemblage of montane floras is a matter of ongoing research. Here, we explore landform-specific differences among montane floras based on a dataset comprising 17,576 angiosperm species representing 140 Chinese mountain floras, which we define as the collection of all angiosperm species growing on a specific mountain. Our results show that igneous bedrock (granitic and karst-granitic landforms) is correlated with higher species richness and phylogenetic overdispersion, while the opposite is true for sedimentary bedrock (karst, Danxia, and desert landforms), which is correlated with phylogenetic clustering. Furthermore, we show that landform type was the primary determinant of the assembly of evolutionarily older species within floras, while climate was a greater determinant for younger species. Our study indicates that landform type not only affects montane species richness, but also contributes to the composition of montane floras. To explain the assembly and differentiation of mountain floras, we propose the 'floristic geo-lithology hypothesis', which highlights the role of bedrock and landform processes in montane floristic assembly and provides insights for future research on speciation, migration, and biodiversity in montane regions.</p>
Research data on health facility-level factors that contribute to delayed diagnosis of cervical cancer
<p>In Kenya, cervical cancer is the 2nd commonly diagnosed type of cancer and the top cause of cancer-related deaths among women. Globally, over 50% of cervical cancer diagnoses are made late, with this proportion rising to 80% in developing countries. Poor Health systems can cause delays in diagnosis, thus, this study focused on determining the health facility-level factors that contribute to delayed diagnosis among cervical cancer patients at the Kenyatta National Hospital (KNH). An analytical cross-sectional mixed method study was adopted to collect data on hospital and referral experiences from 139 cervical cancer patients systematically sampled at KNH, using a semi-structured questionnaire. Associations between the stage at diagnosis and hospital and referral experiences were tested using a logistic regression model at 95% Confidence Interval. 86 (61.9%) were diagnosed at advanced stages III and IV. The potential predictors for delayed diagnosis were; More number of hospital referral times (p-value=0.000), Facing referral challenges (p-value=0.041), Longer time taken for diagnosis appointment (p-value=0.059), and Longer time taken for diagnostic results (p-value=0.007) in the bivariate analysis. More number of hospital referral times (p-value=0.001) and longer time taken for diagnostic results (p-value=0.025), were significantly associated with delayed diagnosis of cervical cancer in the multivariate logistic regression test model. Referral challenges included misdiagnosis, cost of diagnosis, and prolonged diagnosis appointments. The study concluded that the cause of delays in diagnosis for most patients is due to poor health and referral systems and inadequate medical personnel and diagnosis equipment. This study recommends improving referral systems and encouraging partnerships to decentralize diagnostic centers and equipment and train more expertise on cervical cancer.</p>
Рис. 3. Система Животных Ламарка [по: Ламарк, 1955]. in Contribution of Georges Cuvier and Jean-Baptiste de Lamarck to development of the system of Mollusca
Рис. 3. Система Животных Ламарка [по: Ламарк, 1955].
Fig. 1 in Contribution of Georges Cuvier and Jean-Baptiste de Lamarck to development of the system of Mollusca
Fig. 1. Georges Cuvier, an official portrait (http:// www.napoleon-empire.com/pictures/cuvier.php).
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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.