Log in

Relevant bibliographies by topics / Histogram of Averaged Time Surfaces / Journal articles

To see the other types of publications on this topic, follow the link: Histogram of Averaged Time Surfaces.

Journal articles on the topic 'Histogram of Averaged Time Surfaces'

Author: Grafiati

Published: 29 September 2021

Last updated: 18 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Histogram of Averaged Time Surfaces.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Böhm, E., V. Banzon, E. D’Acunzo, F. D’Ortenzio, and R. Santoleri. "Adriatic Sea surface temperature and ocean colour variability during the MFSPP." Annales Geophysicae 21, no. 1 (2003): 137–49. http://dx.doi.org/10.5194/angeo-21-137-2003.

Full text

Abstract:

Abstract. Two years and six months of night-time Advanced Very High Resolution Radiometer (AVHRR) sea surface temperature (SST) and daytime Sea viewing Wide Field of view Sensor (SeaWiFS) data collected during the MFSPP have been used to examine spatial and temporal variability of SST and chlorophyll (Chl) in the Adriatic Sea. Flows along the Albanian and the Italian coasts can be distinguished year-round in the monthly averaged Chl but only in the colder months in the monthly averaged SST’s. The Chl monthly-averaged fields supply less information on circulation features away from coastal boun

APA, Harvard, Vancouver, ISO, and other styles

2

Salgadoe, Arachchige, Andrew Robson, David Lamb, and Derek Schneider. "A Non-Reference Temperature Histogram Method for Determining Tc from Ground-Based Thermal Imagery of Orchard Tree Canopies." Remote Sensing 11, no. 6 (2019): 714. http://dx.doi.org/10.3390/rs11060714.

Full text

Abstract:

Obtaining average canopy temperature (Tc) by thresholding canopy pixels from on-ground thermal imagery has historically been undertaken using ‘wet’ and ‘dry’ reference surfaces in the field (reference temperature thresholding). However, this method is extremely time inefficient and can suffer inaccuracies if the surfaces are non-standardised or unable to stabilise with the environment. The research presented in this paper evaluates non-reference techniques to obtain average canopy temperature (Tc) from thermal imagery of avocado trees, both for the shaded side and sunlit side, without the need

APA, Harvard, Vancouver, ISO, and other styles

3

Sun, Deng, Liu, and Deng. "Combination of Spatial and Frequency Domains for Floating Object Detection on Complex Water Surfaces." Applied Sciences 9, no. 23 (2019): 5220. http://dx.doi.org/10.3390/app9235220.

Full text

Abstract:

In order to address the problems of various interference factors and small sample acquisition in surface floating object detection, an object detection algorithm combining spatial and frequency domains is proposed. Firstly, a rough texture detection is performed in a spatial domain. A Fused Histogram of Oriented Gradient (FHOG) is combined with a Gray Level Co-occurrence Matrix (GLCM) to describe global and local information of floating objects, and sliding windows are classified by Support Vector Machines (SVM) with new texture features. Then, a novel frequency-based saliency detection method

APA, Harvard, Vancouver, ISO, and other styles

4

PINARBAŞI, Aysun, and Funda CENGİZ ÇALLIOĞLU. "Electrospinning of PVP Nanofibers and Optimization with Taguchi Experimental Design." Süleyman Demirel Üniversitesi Fen Edebiyat Fakültesi Fen Dergisi 17, no. 2 (2022): 478–95. http://dx.doi.org/10.29233/sdufeffd.1087764.

Full text

Abstract:

The aim of this study is the determination of optimum process parameters which will provide the finest and the most uniform electrospun Polyvinylpyrrolidone (PVP) based nanofibers with Taguchi experimental design. For the designed experimental setup, parameters (solvent type, polymer concentration, voltage, distance between the electrodes, solution feed rate and humidity) were used which effect the electospinning process significantly. For this purpose, the appropriate orthogonal array was selected to determine the factors and levels at Taguchi experimental design application. The experimental

APA, Harvard, Vancouver, ISO, and other styles

5

He, Ci, Rong Lai, Jin Sun, et al. "Adaptive High-Precision 3D Reconstruction of Highly Reflective Mechanical Parts Based on Optimization of Exposure Time and Projection Intensity." Journal of Imaging 11, no. 5 (2025): 149. https://doi.org/10.3390/jimaging11050149.

Full text

Abstract:

This article is used to reconstruct mechanical parts with highly reflective surfaces. Three-dimensional reconstruction based on Phase Measuring Profilometry (PMP) is a key technology in non-contact optical measurement and is widely applied in the intelligent inspection of mechanical components. Due to the high reflectivity of metallic parts, direct utilization of the captured high-dynamic-range images often results in significant information loss in the oversaturated areas and excessive noise in the dark regions, leading to geometric defects and reduced accuracy in the reconstructed point clou

APA, Harvard, Vancouver, ISO, and other styles

6

Liu, Shan, Guanghong Gong, Luhao Xiao, Mengyuan Sun, and Zhengliang Zhu. "Study of rapid face modeling technology based on Kinect." International Journal of Modeling, Simulation, and Scientific Computing 09, no. 01 (2018): 1750054. http://dx.doi.org/10.1142/s1793962317500544.

Full text

Abstract:

This paper improves the algorithm of point cloud filtering and registration in 3D modeling, aiming for smaller sampling error and shorter processing time of point cloud data. Based on collaborative sampling among several Kinect devices, we analyze the deficiency of current filtering algorithm, and use a novel method of point cloud filtering. Meanwhile, we use Fast Point Feature Histogram (FPFH) algorithm for feature extraction and point cloud registration. Compared with the aligning process using Point Feature Histograms (PFH), it only takes 9[Formula: see text]min when the number of points is

APA, Harvard, Vancouver, ISO, and other styles

7

Vaitiekūnas, Mantas, Darius Jegelevičius, Andrius Sakalauskas, and Simonas Grybauskas. "Automatic Method for Bone Segmentation in Cone Beam Computed Tomography Data Set." Applied Sciences 10, no. 1 (2019): 236. http://dx.doi.org/10.3390/app10010236.

Full text

Abstract:

Due to technical aspects of Cone Beam Computed Tomography (CBCT), the automatic methods for bone segmentation are not widely used in the clinical practice of endodontics, orthodontics, oral and maxillofacial surgery. The aim of this study was to evaluate method’s accuracy for bone segmentation in CBCT data sets. The sliding three dimensional (3D) window, histogram filter and Otsu’s method were used to implement the automatic segmentation. The results of automatic segmentation were compared with the results of segmentation performed by an experienced oral and maxillofacial surgeon. Twenty patie

APA, Harvard, Vancouver, ISO, and other styles

8

Devenport, William J., and Roger L. Simpson. "Time-depeiident and time-averaged turbulence structure near the nose of a wing-body junction." Journal of Fluid Mechanics 210 (January 1990): 23–55. http://dx.doi.org/10.1017/s0022112090001215.

Full text

Abstract:

The behaviour of a turbulent boundary layer on a flat surface as it encounters the nose of a cylindrical wing mounted normal to that surface is being investigated. A three-component laser anemometer has been developed to measure this highly turbulent three-dimensional flow. Measurements of all the non-zero mean-velocity and Reynolds-stress components have been made with this instrument in the plane of symmetry upstream of the wing. These data have been used to estimate some of the component terms of the turbulence kinetic energy equation. Histograms of velocity fluctuations and short-time cros

APA, Harvard, Vancouver, ISO, and other styles

9

Keller, Clifford H., and Terry T. Takahashi. "Representation of Temporal Features of Complex Sounds by the Discharge Patterns of Neurons in the Owl's Inferior Colliculus." Journal of Neurophysiology 84, no. 5 (2000): 2638–50. http://dx.doi.org/10.1152/jn.2000.84.5.2638.

Full text

Abstract:

The spiking pattern evoked in cells of the owl's inferior colliculus by repeated presentation of the same broadband noise was found to be highly reproducible and synchronized with the temporal features of the noise stimulus. The pattern remained largely unchanged when the stimulus was presented from spatial loci that evoke similar average firing rates. To better understand this patterning, we computed the pre-event stimulus ensemble (PESE)—the average of the stimuli that preceded each spike. Computing the PESE by averaging the pressure waveforms produced a noisy, featureless trace, suggesting

APA, Harvard, Vancouver, ISO, and other styles

10

Visutsak, Porawat. "Marching Cubes and Histogram Pyramids for 3D Medical Visualization." Journal of Imaging 6, no. 9 (2020): 88. http://dx.doi.org/10.3390/jimaging6090088.

Full text

Abstract:

This paper aims to implement histogram pyramids with marching cubes method for 3D medical volumetric rendering. The histogram pyramids are used for feature extraction by segmenting the image into the hierarchical order like the pyramid shape. The histogram pyramids can decrease the number of sparse matrixes that will occur during voxel manipulation. The important feature of the histogram pyramids is the direction of segments in the image. Then this feature will be used for connecting pixels (2D) to form up voxel (3D) during marching cubes implementation. The proposed method is fast and easy to

APA, Harvard, Vancouver, ISO, and other styles

11

Gudyma, T. S., Yu L. Krutskii, E. A. Maximovskiy, N. Yu Cherkasova, N. I. Lapekin, and T. V. Larina. "Synthesis of B<sub>4</sub>C–TiB<sub>2</sub> composition powder mixtures by carbidobor reduction using nanofibrous carbon for ceramic fabrication." Powder Metallurgy аnd Functional Coatings 17, no. 2 (2023): 35–45. http://dx.doi.org/10.17073/1997-308x-2023-2-35-45.

Full text

Abstract:

The results of the researching process of obtaining composition powder material B4C–TiB2 by carbide reduction of titanium dioxide, using carbon reducing agent – carbon nanofibers, are presented. Furthermore, the results of studying of some properties of ceramics made using the synthesized powder are presented. The synthesis of composite materials was carried out in an induction crucible furnace for 20 min in the temperature range of 1200–1900 °C in an argon atmosphere. It has been established that the optimum temperature of the synthesis is 1650 °C, irrespective of the batch composition. The c

APA, Harvard, Vancouver, ISO, and other styles

12

Bawa, Parveen, and Blair Calancie. "Rate-coding of spinal motoneurons with high-frequency magnetic stimulation of human motor cortex." Canadian Journal of Physiology and Pharmacology 82, no. 8-9 (2004): 740–48. http://dx.doi.org/10.1139/y04-069.

Full text

Abstract:

Rate-coding in spinal motoneurons was studied using high-frequency magnetic stimulation of the human motor cortex. The subject made a weak contraction to cause rhythmic (i.e., tonic) discharge of a single motor unit in flexor (or extensor) carpi radialis or tibialis anterior, while the motor cortical representation of that muscle was stimulated with brief trains of pulses from a Pyramid stimulator (4 Magstim units connected by 3 BiStim modules). An "m@n" stimulus train consisted of m number of pulses (1–4), with an interpulse interval (IPI) of n ms (1–6). Peristimulus time histograms were cons

APA, Harvard, Vancouver, ISO, and other styles

13

Bylina, I. S. "Features of the Formation and Growth Films Based of PbTe on Mica." Фізика і хімія твердого тіла 16, no. 4 (2015): 685–91. http://dx.doi.org/10.15330/pcss.16.4.685-691.

Full text

Abstract:

The results of comprehensive research vapor-phase condensate on based of PbTe, deposited on mica substrates method of the open evaporation in a vacuum. The analysis of AFM-images constructed histogram distribution of nanostructures on the surface of the film at normal (h) and lateral (D) size. The dependence of the average sizes of nanocrystals in normal (hm) and lateral (Dm) to the substrate surface direction of deposition time τ. Confirmed root dependence medium size of the duration deposition. The analysed feature changes of the form factor of objects on the surface from technological param

APA, Harvard, Vancouver, ISO, and other styles

14

SCHULZ, BEN JESKO, KURT BINDER, and MARCUS MÜLLER. "FLAT HISTOGRAM METHOD OF WANG–LANDAU AND N-FOLD WAY." International Journal of Modern Physics C 13, no. 04 (2002): 477–94. http://dx.doi.org/10.1142/s0129183102003243.

Full text

Abstract:

We present a method for estimating the density of states of a classical statistical model. The algorithm successfully combines the Wang–Landau flat histogram method with the N-fold way in order to improve the efficiency of the original single-spin-flip version. We test our implementation of the Wang–Landau method with the two-dimensional nearest neighbor Ising model for which we determine the tunneling time and the density of states on lattices with sizes up to 50 × 50. Furthermore, we show that our new algorithm performs correctly at right edges of an energy interval over which the density of

APA, Harvard, Vancouver, ISO, and other styles

15

Itami, Masato, and Shin-ichi Sasa. "Singular behaviour of time-averaged stress fluctuations on surfaces." Journal of Statistical Mechanics: Theory and Experiment 2018, no. 12 (2018): 123210. http://dx.doi.org/10.1088/1742-5468/aaf31c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Trahtemberg, Uriel, Tova Hallas, Yehonatan Segman, et al. "New Paradigm of Personalized Glycemic Control Using Glucose Temporal Density Histograms." Journal of Diabetes Science and Technology 13, no. 4 (2019): 708–17. http://dx.doi.org/10.1177/1932296818821423.

Full text

Abstract:

Background: Current methods used to assess glycemic control use averaged measures and provide little information on the glycemic pathology of the patients. In this article we propose visual tools and their related mathematical formulas that allow for improved characterization of the glycemic behavior and achieve better glycemic control. Methods: We present a reanalysis of published data, based on SMBG measurements from clinical trials of both men and women older than 18 years who were either healthy volunteers, prediabetes, or type 1 or type 2 diabetes. New graphic visualizations of glycemia a

APA, Harvard, Vancouver, ISO, and other styles

17

Islam, Md Mojahidul, Ahsan-Ul Ambia, A. O. M. Asaduzzaman, Md Shohidul Islam, and Md Atiqur Rahman. "Object Defect Detection Using Histogram Analysis and Spearman’s Correlation Coefficient." International Journal of Research and Scientific Innovation XI, no. IV (2024): 137–42. http://dx.doi.org/10.51244/ijrsi.2024.1104010.

Full text

Abstract:

In modern manufacturing industry, Automatic defect detection is becoming an attractive alternative to Human Inspection. Automatic defect detection on object surfaces is a compelling process. For accurate automated inspection and classification, computer vision image processing system has been widely used in manufacturing industries. In this article, we proposed histogram based automatic defect detection that process three objects at a time. In the first step we collect image from the camera, perform preprocessing, segmentation then we used histogram and Spearman’s correlation coefficient to fi

APA, Harvard, Vancouver, ISO, and other styles

18

Caron, Jerome, and Denis Jacquet. "Infrared Specular Reflection Spectroscopy of Rough Metallic Substrates." Applied Spectroscopy 59, no. 7 (2005): 904–11. http://dx.doi.org/10.1366/0003702054411698.

Full text

Abstract:

A study of the infrared reflectance of rough metallic surfaces is presented. We show that one reflectance measurement, made in the specular direction under specific conditions, allows the accurate calculation of the shape of the roughness histogram. As a theoretical background, we use modified expressions from Kirchhoff theory for surface scattering. To illustrate our method, we present experimental results obtained with surfaces having a multimode histogram, which means having several different populations with distinct peaks. For these surfaces, we observe oscillations in the regularly decre

APA, Harvard, Vancouver, ISO, and other styles

19

Jaber, Hanadi, Mofeed rashid, and Luigi Fortuna. "Interactive Real-Time Control System for The Artificial Hand." Iraqi Journal for Electrical and Electronic Engineering 16, no. 1 (2020): 1–10. http://dx.doi.org/10.37917/ijeee.16.1.8.

Full text

Abstract:

In recent years, the number of researches in the field of artificial limbs has increased significantly in order to improve the performance of the use of these limbs by amputees. During this period, High-Density surface Electromyography (HD-sEMG) signals have been employed for hand gesture identification, in which the performance of the classification process can be improved by using robust spatial features extracted from HD-sEMG signals. In this paper, several algorithms of spatial feature extraction have been proposed to increase the accuracy of the SVM classifier, while the histogram oriente

APA, Harvard, Vancouver, ISO, and other styles

20

Kabalyk, M. A. "Textural characteristics of subchondral bone in osteoarthritis." Kazan medical journal 97, no. 4 (2016): 518–23. http://dx.doi.org/10.17750/kmj2016-518.

Full text

Abstract:

Aim. To assess the relationship between textural characteristics of the subchondral bone and standard X-ray data, to determine markers of subchondral bone remodeling in gonarthrosis.Methods. The studied group included 92 patients aged 66.1±10.5 years with I-IV grades osteoarthritis by the Kellgren, in the comparison group - 24 volunteers aged 29.6±5.96 years without clinical or radiological signs of gonarthrosis. Standard digital X-ray of the knee joint was performed. On the image, the area of interest was chosen, including a portion of the subchondral bone of 48±2×90±4 pixels of size. Accordi

APA, Harvard, Vancouver, ISO, and other styles

21

Guan, Senlin, Kimiyasu Takahashi, Keiko Nakano, Koichiro Fukami, and Wonjae Cho. "Real-Time Kinematic Imagery-Based Automated Levelness Assessment System for Land Leveling." Agriculture 13, no. 3 (2023): 657. http://dx.doi.org/10.3390/agriculture13030657.

Full text

Abstract:

Many cropping systems, notably for rice or soybean production, rely largely on arable land levelness. In this study, an automated levelness assessment system (ALAS) for evaluating lowland levelness is proposed. The measurement accuracy of total station, real-time kinematic (RTK) receiver, and RTK unmanned aerial vehicle (UAV) instruments used at three study sites was evaluated. The ALAS for assessing the levelness of agricultural lowlands (rice paddy fields) was then demonstrated using UAV-based imagery paired with RTK geographical data. The ALAS (also a program) enabled the generation of an o

APA, Harvard, Vancouver, ISO, and other styles

22

Bartlett, P., P. N. Pusey, and R. H. Ottewill. "Colloidal crystallization under time-averaged zero gravity." Langmuir 7, no. 2 (1991): 213–15. http://dx.doi.org/10.1021/la00050a001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Liu, Xinlong, Weimin Huang, and Eric W. Gill. "Wave Height Estimation from Shipborne X-Band Nautical Radar Images." Journal of Sensors 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/1078053.

Full text

Abstract:

A shadowing-analysis-based algorithm is modified to estimate significant wave height from shipborne X-band nautical radar images. Shadowed areas are first extracted from the image through edge detection. Smith’s function fit is then applied to illumination ratios to derive the root mean square (RMS) surface slope. From the RMS surface slope and the mean wave period, the significant wave height is estimated. A data quality control process is implemented to exclude rain-contaminated and low-backscatter images. A smoothing scheme is applied to the gray scale intensity histogram of edge pixels to

APA, Harvard, Vancouver, ISO, and other styles

24

Raga, A. C., J. Cantó, and A. Castellanos-Ramírez. "ASYMPTOTIC INTERNAL WORKING SURFACES OF PERIODICALLY VARIABLE JETS." Revista Mexicana de Astronomía y Astrofísica 57, no. 1 (2021): 147–55. http://dx.doi.org/10.22201/ia.01851101p.2021.57.01.10.

Full text

Abstract:

We present a derivation based on the “center of mass formalism”; of the asymptotic behaviour of internal working surfaces produced in a variable HerbigHaro (HH) jet. We obtain the general solution for an arbitrary periodic ejection time-variability, and then show examples for a limited set of functional forms for the velocity and density time-evolutions. Finally, we derive a prescription for obtaining the time-averaged mass loss rate from observations of knots along an HH jet (based on the asymptotic solution), and apply it to derive the mass loss rate of the HH 1 jet.

APA, Harvard, Vancouver, ISO, and other styles

25

Nagaoka, H., A. Tanaka, and Y. Toriizuka. "Measurement of effective shear stress working on flat-sheet membrane by air-scrabbling." Water Supply 3, no. 5-6 (2003): 423–28. http://dx.doi.org/10.2166/ws.2003.0198.

Full text

Abstract:

This study is aimed at elucidating the mechanism by which rising air bubbles induce shear stress on a vertically set flat plate. Shear stress was directly measured changing air flow rate and viscosity of water. The time-series data showed strong fluctuation sometimes showing downward direction values (opposite to bubble flow direction). Time-averaged shear stress values were approximately double the water flow induced shear stress values in all experimental conditions. Histograms of the shear stress variation data were fitted well to the normal distribution curve and mean plus three times of s

APA, Harvard, Vancouver, ISO, and other styles

26

Kaupert, Kevin A. "An Evaluation of Impeller Blade Torque During an Impeller–Diffuser Interaction." Journal of Fluids Engineering 126, no. 6 (2004): 960–65. http://dx.doi.org/10.1115/1.1839929.

Full text

Abstract:

An evaluation of the torque on an impeller blade interacting with a diffuser blade is presented. Comparisons of time averaged quantities are made between computed and measured results. The calculation of the impeller blade torque was based on the axial moment from fluid forces acting on a control volume surrounding an impeller blade passage. Unsteady flow field contributions were incorporated in the computational model. Results are compared to numerical predictions of the impeller blade torque based on pressure and shear stress terms integrated over the blade and wall surfaces. From the fluid

APA, Harvard, Vancouver, ISO, and other styles

27

Fastowicz, Jarosław, and Krzysztof Okarma. "Quality Assessment of Photographed 3D Printed Flat Surfaces Using Hough Transform and Histogram Equalization." JUCS - Journal of Universal Computer Science 25, no. (6) (2019): 701–17. https://doi.org/10.3217/jucs-025-06-0701.

Full text

Abstract:

Automatic visual quality assessment of objects created using additive manufacturing processes is one of the hot topics in the Industry 4.0 era. As the 3D printing becomes more and more popular, also for everyday home use, a reliable visual quality assessment of printed surfaces attracts a great interest. One of the most obvious reasons is the possibility of saving time and filament in the case of detected low printing quality, as well as correction of some smaller imperfections during the printing process. A novel method presented in the paper can be successfully applied for the assessment of

APA, Harvard, Vancouver, ISO, and other styles

28

Klymenko, Victor, and Naomi Weisstein. "Figure and Ground in Space and Time: 1. Temporal Response Surfaces of Perceptual Organization." Perception 18, no. 5 (1989): 627–37. http://dx.doi.org/10.1068/p180627.

Full text

Abstract:

The figure – ground organization of an ambiguous bipartite pattern can be manipulated by altering the temporal-frequency content of the two regions of the pattern. Ambiguous patterns in which the two regions of each pattern contained sine-wave gratings of either 8, 4, 1, or 0.5 cycles deg−1 undergoing contrast reversal at rates of 0, 3.75, 7.5, or 15 Hz were tested for figure–ground organization under conditions of equated space-averaged and time-averaged luminance and perceived contrast. All combinations of temporal-frequency differences between the two regions were tested at each spatial fre

APA, Harvard, Vancouver, ISO, and other styles

29

Alves, Patrícia, Joana Maria Moreira, João Mário Miranda, and Filipe José Mergulhão. "Analysing the Initial Bacterial Adhesion to Evaluate the Performance of Antifouling Surfaces." Antibiotics 9, no. 7 (2020): 421. http://dx.doi.org/10.3390/antibiotics9070421.

Full text

Abstract:

The aim of this work was to study the initial events of Escherichia coli adhesion to polydimethylsiloxane, which is critical for the development of antifouling surfaces. A parallel plate flow cell was used to perform the initial adhesion experiments under controlled hydrodynamic conditions (shear rates ranging between 8 and 100/s), mimicking biomedical scenarios. Initial adhesion studies capture more accurately the cell-surface interactions as in later stages, incoming cells may interact with the surface but also with already adhered cells. Adhesion rates were calculated and results shown that

APA, Harvard, Vancouver, ISO, and other styles

30

Jung, I. S., P. M. Ligrani, and J. S. Lee. "Effects of Bulk Flow Pulsations on Phase-Averaged and Time-Averaged Film-Cooled Boundary Layer Flow Structure." Journal of Fluids Engineering 123, no. 3 (2001): 559–66. http://dx.doi.org/10.1115/1.1383972.

Full text

Abstract:

Flow structure in boundary layers film cooled from a single row of round, simple angle holes, and subject to bulk flow pulsations, is investigated, including phase-averaged streamwise velocity variations, and alterations of time-averaged flow structure. The bulk flow pulsations are in the form of sinusoidal variations of velocity and static pressure, and are similar to flow variations produced by potential flow interactions and passing shock waves near turbine surfaces in gas turbine engines. Injection hole length to diameter ratio is 1.6, time-averaged blowing ratio is 0.50, and bulk flow pul

APA, Harvard, Vancouver, ISO, and other styles

31

Durant, Szonya, Alejandra Donoso-Barrera, Sovira Tan, and Alan Johnston. "Moving from spatially segregated to transparent motion: a modelling approach." Biology Letters 2, no. 1 (2005): 101–5. http://dx.doi.org/10.1098/rsbl.2005.0379.

Full text

Abstract:

Motion transparency, in which patterns of moving elements group together to give the impression of lacy overlapping surfaces, provides an important challenge to models of motion perception. It has been suggested that we perceive transparent motion when the shape of the velocity histogram of the stimulus is bimodal. To investigate this further, random-dot kinematogram motion sequences were created to simulate segregated (perceptually spatially separated) and transparent (perceptually overlapping) motion. The motion sequences were analysed using the multi-channel gradient model (McGM) to obtain

APA, Harvard, Vancouver, ISO, and other styles

32

dos Santos, Elizaldo Domingues, Marco Paulsen Rodrigues, Thiago Smith V. C. de Andrade, Liércio André Isoldi, Francis Henrique Ramos França, and Luiz Alberto Oliveira Rocha. "Numerical Study of Different Closure Approaches for Prediction of Forced Convective Turbulent Cylindrical Cavity Flows." Defect and Diffusion Forum 366 (April 2016): 166–81. http://dx.doi.org/10.4028/www.scientific.net/ddf.366.166.

Full text

Abstract:

The present work exhibits a numerical study comparing the fluid dynamic and thermal fields of turbulent, three-dimensional forced convective cylindrical cavity flows obtained with Large Eddy Simulation (LES) and Reynolds-Averaged Navier Stokes (RANS). In the latter approach, three different closure models are employed: Reynolds Stress Model (RSM), standard k – ε and standard k - ω. It is considered a three-dimensional, incompressible, turbulent fluid flow at the steady state with ReD = 22,000 and Pr = 0.71. The main purpose is to investigate whether discrepancies are noticed in time-averaged a

APA, Harvard, Vancouver, ISO, and other styles

33

Hu, Dongyang, Chen Wang, Di Li, Weiyu Xu, and Xiangchao Zhang. "Vibration Deformation Measurement and Defect Identification Based on Time-Averaged Digital Holography." Photonics 12, no. 4 (2025): 373. https://doi.org/10.3390/photonics12040373.

Full text

Abstract:

Based on time-averaged digital holography, a vibration deformation measurement system was designed and a full process reconstruction and identification strategy was developed for detecting the micro-defects in optical materials. Through the double beam expansion setting and off-axis imaging adjustments, it is suitable for measuring optical materials with non-specular surfaces by double exposure shots. The scheme was applied to optical sandwich composites and 3D printed glass. Abnormal amplitudes occur at the defects due to different resonance frequencies, resulting in anomalous vibrations unde

APA, Harvard, Vancouver, ISO, and other styles

34

Ngo Thanh, Binh, Minh Ngo Van, Linh Vu Ngoc, and Dung Pham Tuan. "Crack detection on concrete surfaces using the YOLOv8 quantization model." Transport and Communications Science Journal 76, no. 4 (2025): 489–503. https://doi.org/10.47869/tcsj.76.4.4.

Full text

Abstract:

The condition of concrete structures’ surfaces, most importantly the condition of cracks on the surface and their development over time, is an important and common criterion used to diagnose health conditions and determine their service life. Rapid collection, identification, and monitoring of concrete structures’ surfaces to assess the condition of bridge structures requires a fast-acting system that can meet the actual speed of the inspection process. This article introduces a YOLOv8 quantization model for rapid crack detection in concrete structures, leveraging GPU acceleration suitable for

APA, Harvard, Vancouver, ISO, and other styles

35

Sari, Filiz, and Ali Burak Ulas. "Deep Learning Application in Detecting Glass Defects with Color Space Conversion and Adaptive Histogram Equalization." Traitement du Signal 39, no. 2 (2022): 731–36. http://dx.doi.org/10.18280/ts.390238.

Full text

Abstract:

Manually detecting defects on the surfaces of glass products is a slow and time-consuming process in the quality control process, so computer-aided systems, including image processing and machine learning techniques are used to overcome this problem. In this study, scratch and bubble defects of the jar, photographed in the studio with a white matte background and a -60° peak angle, are investigated with the Yolo-V3 deep learning technique. Obtained performance is 94.65% for the raw data. Color space conversion (CSC) techniques, HSV and CIE-Lab Luv, are applied to the resulting images. V channe

APA, Harvard, Vancouver, ISO, and other styles

36

Mahmud, Kashif, Gregoire Mariethoz, Andy Baker, and Pauline C. Treble. "Hydrological characterization of cave drip waters in a porous limestone: Golgotha Cave, Western Australia." Hydrology and Earth System Sciences 22, no. 2 (2018): 977–88. http://dx.doi.org/10.5194/hess-22-977-2018.

Full text

Abstract:

Abstract. Cave drip water response to surface meteorological conditions is complex due to the heterogeneity of water movement in the karst unsaturated zone. Previous studies have focused on the monitoring of fractured rock limestones that have little or no primary porosity. In this study, we aim to further understand infiltration water hydrology in the Tamala Limestone of SW Australia, which is Quaternary aeolianite with primary porosity. We build on our previous studies of the Golgotha Cave system and utilize the existing spatial survey of 29 automated cave drip loggers and a lidar-based flow

APA, Harvard, Vancouver, ISO, and other styles

37

Ashraf, Ahmed. "SELECTING THE MESH FOR MODELLING THE COMBUSTION OF A STATIONARY SOLID FUEL BED IN ANSYS FLUENT." Energy Systems 9, no. 3 (2024): 7–23. https://doi.org/10.34031/es.2024.3.001.

Full text

Abstract:

The choice of model parameters and calculation grid for the model of combustion of a fixed layer of solid fuel is considered. The models included in the calculation and their main parameters are presented. The comparison of the obtained modelling results using different meshes is carried out. The adequacy of combustion modelling was checked by comparing the averaged composition of gases and their temperature in the output window with the values obtained by calculation of fuel combustion; the averaged SO2 and NO content in the output window with the results of emission calculations and combusti

APA, Harvard, Vancouver, ISO, and other styles

38

Haruyama, Y., T. Kazamaki, A. Mori, and H. Mori. "Evaluation of Various Approximate Solutions for Fluid Inertia Effects on the Dynamic Performance of a Stepped Thrust Bearing." Journal of Tribology 107, no. 1 (1985): 39–45. http://dx.doi.org/10.1115/1.3261000.

Full text

Abstract:

Based on the Navier-Stokes equations in which the pressure is assumed to be constant across the film thickness, various approximate solutions and the exact one for the dynamic performance of an infinitely wide, stepped thrust bearing in a laminar flow regime are presented under the assumption of a small harmonic vibration. From comparison of the approximate solutions with the exact one, it is concluded that some kind of averaging approach in which the time dependent term is treated exactly while the convective inertia terms are averaged out across the film thickness gives close approximations

APA, Harvard, Vancouver, ISO, and other styles

39

AlRowaily, Mofleh Hannuf, Hamzah Arof, and Imanurfatiehah Ibrahim. "Luminosity and Contrast Adjustment of Fundus Images with Reflectance." Applied Sciences 13, no. 5 (2023): 3312. http://dx.doi.org/10.3390/app13053312.

Full text

Abstract:

This paper presents an automatic correction method for luminosity and contrast variation in fundus images. Sixty retina or fundus images with different levels of reflectance are selected from online databases and used to assess the effectiveness of the proposed method. There are five stages in the approach, and they are image input, filtering, luminosity correction, histogram stretching and post-processing. First, a color fundus image is read as input, and its three color components, red (R), green (G) and blue (B), are separated into different channels or arrays. Next, the eye region, or the

APA, Harvard, Vancouver, ISO, and other styles

40

Guo, Wei, Yusheng Tong, Yurong Huang, Yuanyuan Wang, and Jinhua Yu. "A High-Efficiency Super-Resolution Reconstruction Method for Ultrasound Microvascular Imaging." Applied Sciences 8, no. 7 (2018): 1143. http://dx.doi.org/10.3390/app8071143.

Full text

Abstract:

The emergence of super-resolution imaging makes it possible to display the microvasculatures clearly using ultrasound imaging, which is of great importance in the early diagnosis of cancer. At present, the super-resolution performance can only be achieved when the sampling signal is long enough (usually more than 10,000 frames). Thus, the imaging time resolution is not suitable for clinical use. In this paper, we proposed a novel super-resolution reconstruction method, which is proved to have a satisfactory resolution using shorter sampling signal sequences. In the microbubble localization ste

APA, Harvard, Vancouver, ISO, and other styles

41

Lu, Zhixin. "Composition Analysis and Identification of Ancient Glass Products Based on Hierarchical Clustering." Highlights in Science, Engineering and Technology 21 (December 4, 2022): 262–70. http://dx.doi.org/10.54097/hset.v21i.3169.

Full text

Abstract:

The ancient glass is very easy to be affected and weathered by the burial environment. During the weathering process, there will be a lot of exchange between internal elements and environmental elements, and the composition of glass will also change in proportion, which will affect the judgment of its category; This paper mainly deals with data based on hierarchical clustering analysis and the optimization model of hierarchical clustering analysis.First, the chi square test is used to analyze the data of the four variables. Based on whether the P significance value is less than 0.05, it is fur

APA, Harvard, Vancouver, ISO, and other styles

42

Zauner, L., A. Bahr, T. Kozák, et al. "Time-averaged and time-resolved ion fluxes related to reactive HiPIMS deposition of Ti-Al-N films." Surface and Coatings Technology 424 (October 2021): 127638. http://dx.doi.org/10.1016/j.surfcoat.2021.127638.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Iizuka, Satoru, Kazuma Sakuta, Wataru Suzukawa, Kohgi Kato, and Takuma Gohda. "Handling of fine-particles by time-averaged particle driving method in plasmas." Thin Solid Films 515, no. 9 (2007): 4182–86. http://dx.doi.org/10.1016/j.tsf.2006.02.052.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

Demoli, Nazif, and Dalibor Vukicevic. "Detection of hidden stationary deformations of vibrating surfaces by use of time-averaged digital holographic interferometry." Optics Letters 29, no. 20 (2004): 2423. http://dx.doi.org/10.1364/ol.29.002423.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Seo, H. J., J. S. Lee, and P. M. Ligrani. "Effects of Bulk Flow Pulsations on Film Cooling From Different Length Injection Holes at Different Blowing Ratios." Journal of Turbomachinery 121, no. 3 (1999): 542–50. http://dx.doi.org/10.1115/1.2841349.

Full text

Abstract:

Bulk flow pulsations in the form of sinusoidal variations of velocity and static pressure at injectant Strouhal numbers from 0.8 to 10.0 are investigated as they affect film cooling from a single row of simple angle holes. Similar flow variations are produced by potential flow interactions and passing shock waves near turbine surfaces in gas turbine engines. Time-averaged temperature distributions, phase-averaged temperature distributions, adiabatic film cooling effectiveness values, and iso-energetic Stanton numbers show that important alterations to film cooling protection occur as pulsation

APA, Harvard, Vancouver, ISO, and other styles

46

Oreopoulos, Lazaros, Robert F. Cahalan, and Steven Platnick. "The Plane-Parallel Albedo Bias of Liquid Clouds from MODIS Observations." Journal of Climate 20, no. 20 (2007): 5114–25. http://dx.doi.org/10.1175/jcli4305.1.

Full text

Abstract:

Abstract The authors present the global plane-parallel shortwave albedo bias of liquid clouds for two months, July 2003 and January 2004. The cloud optical properties necessary to perform the bias calculations come from the operational Moderate Resolution Imaging Spectroradiometer (MODIS) Terra and MODIS Aqua level-3 datasets. These data, along with ancillary surface albedo and atmospheric information consistent with the MODIS retrievals, are inserted into a broadband shortwave radiative transfer model to calculate the fluxes at the atmospheric column boundaries. The plane-parallel homogeneous

APA, Harvard, Vancouver, ISO, and other styles

47

Rojas, R., L. Feyen, A. Dosio, and D. Bavera. "Improving pan-european hydrological simulation of extreme events through statistical bias correction of RCM-driven climate simulations." Hydrology and Earth System Sciences Discussions 8, no. 2 (2011): 3883–936. http://dx.doi.org/10.5194/hessd-8-3883-2011.

Full text

Abstract:

Abstract. In this work we asses the benefits of removing bias in climate forcing data used for hydrological climate change impact assessment at pan-European scale, with emphasis on floods. Climate simulations from the HIRHAM5-ECHAM5 model driven by the SRES-A1B emission scenario are corrected for bias using a histogram equalization method. As predictand for the bias correction we employ gridded interpolated observations of precipitation, average, minimum, and maximum temperature from the E-OBS data set. Bias removal transfer functions are derived for the control period 1961–1990. These are sub

APA, Harvard, Vancouver, ISO, and other styles

48

Tomita, Yutaka, Minoru Tomita, Istvan Schiszler, et al. "Moment Analysis of Microflow Histogram in Focal Ischemic Lesion to Evaluate Microvascular Derangement after Small Pial Arterial Occlusion in Rats." Journal of Cerebral Blood Flow & Metabolism 22, no. 6 (2002): 663–69. http://dx.doi.org/10.1097/00004647-200206000-00004.

Full text

Abstract:

The authors' high-spatial-resolution optical method was used to examine microvascular derangement in a focal cerebral cortex lesion in 12 Sprague-Dawley rats anesthetized with α-chloralose-urethane. A pial artery (approximately 40- to 50-μm diameter) was occluded by laser-beam cauterization (n = 6). Diluted carbon black suspension was injected into the internal carotid artery, and images in a 2-mm x 2-mm region of interest during tissue dye-dilution were recorded. Sequential frames were analyzed with Matlab software to evaluate blood distribution and mean transit time, affording a two-dimensio

APA, Harvard, Vancouver, ISO, and other styles

49

Colino, Enrique, Jorge Garcia-Unanue, Leonor Gallardo, Carl Foster, Alejandro Lucia, and Jose Luis Felipe. "Mechanical Properties of Treadmill Surfaces and Their Effects on Endurance Running." International Journal of Sports Physiology and Performance 15, no. 5 (2020): 685–89. http://dx.doi.org/10.1123/ijspp.2019-0539.

Full text

Abstract:

Purpose: To characterize, for the first time, the mechanical properties of treadmill surfaces along with a practical interpretation of their influence on physiological and perceived demands during endurance running compared with other widely used surfaces such as asphalt and tartan tracks. Methods: Ten experienced male endurance runners performed a 40-minute running bout at a preferred constant speed on 3 different surfaces (after a randomized, counterbalanced order with a 7-d interval between trials): asphalt, tartan, or treadmill. Shock absorption, vertical deformation, and energy restitutio

APA, Harvard, Vancouver, ISO, and other styles

50

Domnisoru, L. "On the long-term hydroelastic global structural response evaluation of a 100000 tdw oil-tanker." IOP Conference Series: Materials Science and Engineering 1182, no. 1 (2021): 012020. http://dx.doi.org/10.1088/1757-899x/1182/1/012020.

Full text

Abstract:

Abstract In this paper, the hydroelastic analysis for a 100000 tdw oil-tanker, with a length of 240 m, operation reference speed of 15 knots, on two loading cases full cargo and ballast, is developed. For a realistic approach of the dynamic response, the oil-tanker is considered under random waves’ loads, requiring several steps in the process of the short-term and long-term global structural analysis. The random waves have Longuet-Higgins formulation, with first-order harmonics by ITTC power density spectrum, with maximum wave significant height 12 m, and second-order interference waves’ harm

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!