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33 results for “Surface texture”
Haptic Saliency Model for Rigid Textured Surfaces
<p>When touching an object, we focus more on some of its parts rather than touching the whole object’s surface, i.e. some parts are more salient than others. Here we investigated how different physical properties of rigid, plastic, relieved textures determine haptic exploratory behavior. We produced haptic stimuli whose textures were locally defined by random distributions of four independent features: amplitude, spatial frequency, orientation and isotropy. Participants explored two stimuli one after the other and in order to promote exploration we asked them to judge their similarity. We used a linear regression model to relate the features and their gradients to the exploratory behavior (spatial distribution of touch duration). The model predicts human behavior significantly better than chance, suggesting that exploratory movements are to some extent driven by the low level features we investigated. Remarkably, the contribution of each predictor changed as a function of the spatial scale in which it was defined, showing that haptic exploration preferences are spatially tuned, i.e. specific features are most salient at different spatial scales.</p> <p>Metzger, A., Toscani, M., Valsecchi, M. & Drewing, K. (2018) Haptic saliency model for rigid textured surfaces. In Prattichizzo, D., Shinoda, H., Tan, H. Z., Ruffaldi, E. & Frisoli, A. (Eds.), Haptics: Science, Technology, and Applications, 11th International Conference, EuroHaptics 2018, Pisa, Italy, June 13-16, 2018, Proceedings, Part I (pp. 389–400). Springer International Publishing, Cham.</p> <p> </p> <p>Data of the experiment is stored in a zip file, containing all data relative to the publication. The 'movement' folder containes participnts' movement data. The 'stimuli' folder containes the 2D and 3D models of the stimuli. </p> <p>Explanaition and coding of the data is provided in the file VARIABLE_CODES.txt.</p>
Confocal surface texture analysis included in the paper Paixao et al. 2021 - QI. (supplemental to SOM2)
<p>This upload contains all final reports and data of the Confocal surface texture analysis done with ConfoMap and included in the paper Paixao et al. 2021. The Middle Paleolithic Ground Stones Tools of Nesher Ramla Unit V (Southern Levant): a multi-scale use-wear approach for assessing the assemblage functional variability. Quaternary International. (https://doi.org/10.1016/j.quaint.2021.06.009)</p> <p> </p> <p>Pre-print: https://osf.io/gyvw8/</p> <p> </p> <p>Instructions to download all files at once are given here: <a href="https://doi.org/10.5281/zenodo.4011952">https://doi.org/10.5281/zenodo.4011952</a></p>
Figure 15. Histology underlying grossly smooth surface patterns. A in Growth and textural ageing in long bones of the American alligator Alligator mississippiensis (Crocodylia: Alligatoridae)
Figure 15. Histology underlying grossly smooth surface patterns. A, slight surface undulations (arrows) associated grossly with shallow dimples (FWC 40854, femur section b). B, smooth surface underlain by zone of lamellar bone (FWC 40583, humerus section c). C, smooth surface underlain by annulus. Arrows indicate annuli throughout cortex (FWC LGS8, tibia section d). Scale bars = 230 µm.
Figure 14. Histology underlying porous surface patterns. A in Growth and textural ageing in long bones of the American alligator Alligator mississippiensis (Crocodylia: Alligatoridae)
Figure 14. Histology underlying porous surface patterns. A, zone of fibrolamellar bone underlying etched porous surface (FWC 40723, tibia section c). B, fibrolamellar zone with large radial channels (arrow) underlying surface with overprinted dotted and etched porosity (FWC 40723, femur section c). C, longitudinal channels underlying radiating fibrous region, with arrows indicating channels intersecting and recently incorporated into the bone surface (FWC LGS4, femur section d). D, channels in varying orientations underlying dotted porous surface (FWC LGS1, femur section c). E, zone of lamellar bone underlying dotted porous surface (FWC 40583, humerus section c). Scale bars = 230 µm.
Figure 13 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 13. Histology underlying grossly smooth surface textures in transverse section. A, single-layered fibrolamellar cortex (DMNH 83592, tibiotarsus section c). B, three-layered cortex with a central fibrolamellar core and endosteal and periosteal lamellar bone (DMNH 83591, femur section e). M, medullary cavity; P, osteogenic layer of periosteum. Scale bars: A = 50 µm; B = 92 µm.
Figure 6. A in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 6. A, very faint transverse wrinkles, indicated by arrows (DMNH 82228, tibiotarsus). B, a more prominent transverse wrinkled texture pattern (DMNH 82910, femur). C, scattered pores, examples indicated by arrows, on an otherwise nonporous surface (DMNH 82729, femur). D, rugose texture (DMNH 82944, femur). E, areas of rugose texture on an otherwise smooth surface (DMNH 80847, humerus). Scale bars = 1 cm.
Figure 5 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 5. Examples of striated, fibrous, and porous texture patterns. A, longitudinal striations with (top) and without (bottom) transverse struts (DMNH 83589, tibiotarsus). B, fibrous texture (DMNH 78603, humerus). C, shorter-grained fibrous texture, intermediate between (B) and (D) (DMNH 82727, humerus). D, dotted pattern of porous texture (DMNH 82727, femur). E, rough grainy texture lacking distinct individual pores (DMNH 82247, femur). Scale bars = 1 cm.
Figure 12. Juvenile bone DMNH 83585 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 12. Juvenile bone DMNH 83585 in longitudinal section. A, longitudinal to slightly oblique channels intersecting the bone surface (arrows) in the distal region of the shaft (tibiotarsus region d). B, oblique channels intersecting the bone surface (arrows) just proximal to the midshaft region (tibiotarsus region b). C, irregular channels in the midshaft region (tibiotarsus region c). M, medullary cavity; P, periosteum. Scale bars = 92 µm.
Figure 7 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 7. Examples of nonpenetrating longitudinal and smooth texture patterns. A, shallow longitudinal grooves (DMNH 82732, humerus). B, shallow surface dimples (DMNH 82730, femur). C, generally smooth texture with extremely faint longitudinal grooves (DMNH 82730, tibiotarsus). D, completely smooth surface (DMNH 82730, humerus). Scale bars = 1 cm.
Figure 3 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 3. Results of the cluster analyses of bone landmark characters. The distance metric is normalized percent disagreement. Complete linkage method (farthest neighbour). All specimen designations are DMNH catalogue numbers. The numbers in parentheses represent ontogenetic stages. Femur: DMNH 78500 differs from 'All Others' only in the lack of character 10 (medial scar for M. flexor perforati II and IV). Tibiotarsus: DMNH 83058 differs from 'All Others' only in the lack of character 13 (peroneal sulcus). Humerus: DMNH 78603 differs from 'All Others' only in the lack of character 12 (bicipital crest).
Figure 14 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 14. Irregular resorptive surface with large erosion bays lined by numerous osteoclasts (arrows), seen in transverse section (DMNH 83592, tibiotarsus section a). P, periosteum. Scale bar = 92 µm.
Figure 1 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 1. Locations of thin sections used in the autocontrol study. A, femur; B, tibiotarsus. Labelled lines indicate the positions of transverse sections. Longitudinal sections are designated based on the transverse lines they intersect.
Figure 11 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 11. Transverse sections of immature long bones. A, single-layered fibrolamellar cortex (DMNH 83586, femur section c). B, active incorporation of channels at the surface of the fibrolamellar cortex (DMNH 83586, tibiotarsus section c). C, stratified fibrolamellar cortex (DMNH 83586, tibiotarsus section c). D, circularly orientated oblique channels in outer regions of fibrolamellar cortex (DMNH 83589, femur section d). B, blood vessel with erythrocytes; L, lymphatic vessel; M, medullary cavity; P, osteogenic layer of periosteum. The space within P is a preparation artefact. Scale bars: A, D = 230 µm; B = 50 µm; C = 92 µm.
Figure 4 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 4. Relationships between the percentage adult size based on element length and the percentage maturity based on parsimony and cluster analyses.
Figure 9 in Bone surface texture as an ontogenetic indicator in long bones of the Canada goose Branta canadensis (Anseriformes: Anatidae)
Figure 9. Relationships between texture type and parsimony-based and cluster-based percentage maturity indices. The circle diameter is proportional to the number of specimens.
Supporting data for 'Chemically Reduced Graphene Oxide based Aerogels (rGOAs) - insight on the surface and textural functionalities dependent on handling the synthesis factors'
<p>Experimental data for the 'Chemically Reduced Graphene Oxide based Aerogels (rGOAs) - insight on the surface and textural functionalities dependent on handling the synthesis factors' manuscript/publication.</p> <p>Package contains following data:<br> 1. File with description of the experimental conditions for rGOAs synthesis, format: .pdf, number of files: 1 <br> 2. Data of Boehm titration for graphene oxide used for synthesis of rGOAs, format: .txt, number of files: 12<br> 3. Fourier-transform infrared spectra of rGOA samples and GO used for synthesis, format: .csv, number of files: 16<br> 4. Raw chromatograms of test probes for rGOA samples, format .txt, number of files: 15 folder with 11 files in each</p> <p> </p>
Raw data of surface texture parameter values (incl. output of statistical tests).
<p>This is the raw data (supplement 3) of the publication with the title "Prey size reflected in tooth wear – a comparison of two wolf populations from Sweden and Alaska" written by: Ellen Schulz-Kornas, Mirella H. Skiba and Thomas M. Kaiser and accepted for publication as manuscript RSFS-2023-0070.R1 in the journal Interface Focus on 2-April 2024.</p> <p> </p>
Beyond the Surface: Exploring Ancient Plant Food Processing through Confocal Microscopy and 3D Surface Texture Analysis
<p>This repository contains the raw data and code to reproduce the analyses presented in the paper "Beyond the Surface: Exploring Ancient Plant Food Processing through Confocal Microscopy and 3D Surface Texture Analysis" by Zupancich et al.</p> <p>The repositiory includes:</p> <ul> <li>CSV files containing the raw data of 3D surface measurement of experimental active and passive tools utilised in processing cereals and legumes.</li> <li>Rmarkdown files of the code utilised to perform the analyses</li> </ul>
In-Line Measurement of the Surface Texture of Rolls Using Long Slender Piezoresistive Microprobes
<p>Raw data from the article "In-Line Measurement of the Surface Texture of Rolls Using Long Slender Piezoresistive Microprobes" published in <em>Journal of Sensors and Sensor Systems</em> on 05 Sep 2021<br> <br> All factory measurements were made with the "G" microprobe. In laboratory measurements both the "G" and "W" microprobes were used.</p>
Self-propagation of reactive Al/Ni multilayers with textured surface topography
<p>Reactive multilayer systems (RMS) were fabricated by magnetron sputtering deposition of Al and Ni nanolayers on a copper substrate with textured surface topography, the copper substrate was subsequently removed in order to obtain free-standing RMS. The morphology of the substrate surface impacted the microstructure of the produced RMS, therefore the RMS have a textured surface. The samples were papered with a surface texture in different orientations (0°, 45°, and 90°). Besides RMS with the same characteristics were prepared on Si wafer (flat surface) in order to compare the propagation behavior of the RMS with a textured surface and RMS with a relatively flat surface. During the ignition test, the propagation front was recorded by a High-Speed camera with a resolution of 50,000 fps. In the videos, it is possible to observe the effect of the textured surface of the RMS on the propagation front of the reaction.</p>
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Allen Brain Atlas
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