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Journal articles on the topic 'SEM contourss'

Author: Grafiati

Published: 7 July 2024

Last updated: 31 July 2025

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1

Shalaby, Abouzeid M. "Isomorphic Hilbert spaces associated with different complex contours of the $\mathcal{PT}$-symmetric (-x4) theory." International Journal of Modern Physics A 29, no. 11n12 (2014): 1450059. http://dx.doi.org/10.1142/s0217751x14500596.

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In this work, we stress the existence of isomorphisms which map complex contours from the upper half to contours in the lower half of the complex plane. The metric operator is found to depend on the chosen contour but the maps connecting different contours are norm-preserving. To elucidate these features, we parametrized the contour [Formula: see text] considered in Phys. Rev. D 73, 085002 (2006) for the study of wrong sign x4 theory. For the parametrized contour of the form [Formula: see text], we found that there exists an equivalent Hermitian Hamiltonian provided that a2c is taken to be rea

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Eckert, Aubrey, Nevin Martin, Ryan G. Coe, Bibiana Seng, Zacharia Stuart, and Zachary Morrell. "Development of a Comparison Framework for Evaluating Environmental Contours of Extreme Sea States." Journal of Marine Science and Engineering 9, no. 1 (2020): 16. http://dx.doi.org/10.3390/jmse9010016.

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Environmental contours of extreme sea states are often utilized for the purposes of reliability-based offshore design. Many methods have been proposed to estimate environmental contours of extreme sea states, including, but not limited to, the traditional inverse first-order reliability method (I-FORM) and subsequent modifications, copula methods, and Monte Carlo methods. These methods differ in terms of both the methodology selected for defining the joint distribution of sea state parameters and in the method used to construct the environmental contour from the joint distribution. It is often

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Zhou, Han, Yikun Li, Ying Gu, Zetian Shen, Xixu Zhu, and Yun Ge. "A deep learning based automatic segmentation approach for anatomical structures in intensity modulation radiotherapy." Mathematical Biosciences and Engineering 18, no. 6 (2021): 7506–24. http://dx.doi.org/10.3934/mbe.2021371.

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<abstract> <sec><title>Objective</title><p>To evaluate the automatic segmentation approach for organ at risk (OARs) and compare the parameters of dose volume histogram (DVH) in radiotherapy. Methodology: Thirty-three patients were selected to contour OARs using automatic segmentation approach which based on U-Net, applying them to a number of the nasopharyngeal carcinoma (NPC), breast, and rectal cancer respectively. The automatic contours were transferred to the Pinnacle System to evaluate contour accuracy and compare the DVH parameters.</p> </sec> &l

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Poom, Leo. "Visual Inter-Attribute Contour Completion." Perception 30, no. 7 (2001): 855–65. http://dx.doi.org/10.1068/p3222.

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A new visual phenomenon, inter-attribute illusory (completed) contours, is demonstrated. Contour completions are perceived between any combination of spatially separate pairs of inducing elements (Kanizsa-like ‘pacman’ figures) defined either by pictorial cues (luminance contrast or offset gratings), temporal contrast (motion, second-order-motion or ‘phantom’ contours), or binocular-disparity contrast. In a first experiment, observers reported the perceived occurrence of contour completion for all pair combinations of inducing elements. In a second experiment they rated the perceived clarity o

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Director, Hannah M., Adrian E. Raftery, and Cecilia M. Bitz. "Improved Sea Ice Forecasting through Spatiotemporal Bias Correction." Journal of Climate 30, no. 23 (2017): 9493–510. http://dx.doi.org/10.1175/jcli-d-17-0185.1.

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A new method, called contour shifting, is proposed for correcting the bias in forecasts of contours such as sea ice concentration above certain thresholds. Retrospective comparisons of observations and dynamical model forecasts are used to build a statistical spatiotemporal model of how predicted contours typically differ from observed contours. Forecasted contours from a dynamical model are then adjusted to correct for expected errors in their location. The statistical model changes over time to reflect the changing error patterns that result from reducing sea ice cover in the satellite era i

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Baumann, Brian C., Walter Bosch, Amit Bahl, et al. "Development and validation of contouring guidelines for post-cystectomy adjuvant radiation of bladder cancer." Journal of Clinical Oncology 34, no. 2_suppl (2016): 409. http://dx.doi.org/10.1200/jco.2016.34.2_suppl.409.

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409 Background: Several organizations are developing clinical trials to evaluate adjuvant radiotherapy (RT) for bladder cancer patients at elevated risk of locoregional failure (LF). However, the clinical target volumes (CTVs) & organs at risk (OARs) for this treatment have not been defined in detail. Our purpose was to define multi-institutional consensus CTVs & OARs for male & female bladder cancer patients undergoing adjuvant RT in clinical trials. Methods: We convened a multi-disciplinary group of bladder cancer specialists from 9 centers in 3 countries. 5 radiation oncologists

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Zhao, Zhouxiang, Hongwu Wu, Meng Zhang, Shiqiang Fu, and Kang Zhu. "Fiber Orientation Reconstruction from SEM Images of Fiber-Reinforced Composites." Applied Sciences 13, no. 6 (2023): 3700. http://dx.doi.org/10.3390/app13063700.

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The orientation of fibers in composites reinforced with short fibers can provide insight into the microstructure of the material and considerably affect its macroscopic characteristics. However, the present standard techniques for detecting fiber orientation and length based on microscopic image processing have faults in practical applications, including high effort, low efficiency, and unreliable measurement results. In this study, a method for measuring fiber orientation based on 3D reconstructions of scanning electron microscope (SEM) images is provided. The geodesic active contour (GAC) mo

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Wrang, Linus, Eirini Katsidoniotaki, Erik Nilsson, Anna Rutgersson, Jesper Rydén, and Malin Göteman. "Comparative Analysis of Environmental Contour Approaches to Estimating Extreme Waves for Offshore Installations for the Baltic Sea and the North Sea." Journal of Marine Science and Engineering 9, no. 1 (2021): 96. http://dx.doi.org/10.3390/jmse9010096.

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At the stage of design load analysis for offshore installations such as wave energy systems, a critical step is the determination of environmental cases to be evaluated for the definition of the characteristic design load. A commonly used methodology for load case selection, applied in multiple studies and recommended by technical specifications and guidelines, is the environmental contour approach. Here, 50-year environmental contours were generated for four study sites located in the North Sea, Skagerrak and the Baltic Sea by considering both observations and hindcast (model) data. For the c

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Mikulić, Antonio, and Joško Parunov. "Environmental Contours in the Adriatic Sea for Design and Analysis of Marine Structures." Journal of Marine Science and Engineering 11, no. 5 (2023): 899. http://dx.doi.org/10.3390/jmse11050899.

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The environmental contours represent an approach for defining extreme environmental conditions, resulting in extreme responses of marine structures with a given return period. Over the past decade, an increasing number of studies have been developed dealing with the methods for defining environmental contours and enhancing their practical application in different marine environments. In the present study, environmental contours describing significant wave heights and peak wave periods are created for the Adriatic Sea. This small semi-enclosed sea basin within the Mediterranean Sea encounters i

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Sichacá, Martín Barajas, and Yutaro Kabata. "Projection of crosscap." International Journal of Geometric Methods in Modern Physics 16, no. 09 (2019): 1950130. http://dx.doi.org/10.1142/s0219887819501305.

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The apparent contour of a surface in [Formula: see text]-space can be investigated in terms of singularity theory. We show the precise bifurcation diagrams of the apparent contours of generic crosscap surfaces with respect to orthogonal projections. Especially, our bifurcation diagrams contain also the information of the projected images of the singular sets of crosscap surfaces.

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Kozma, P., I. Kovács, and G. Benedek. "Late Maturation (Age >5 Years) of Long-Range Spatial Interactions in Humans." Perception 26, no. 1_suppl (1997): 213. http://dx.doi.org/10.1068/v970113.

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We have studied the development of long-range spatial interactions in children (age 5 – 14 years) with normal vision. In our field study involving 410 normal children we used a battery of contour-integration cards that were developed earlier to test amblyopic patients (Kovács, Polat, and Norcia, paper presented at ARVO 1996). Each card consisted of a closed chain of collinearly aligned Gabor patches (contour) and a background of randomly oriented and positioned Gabor patches (noise). Subjects were asked to identify the location of the contour, and also to trace the contour within each card. Th

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Bach, Joachim S. "ENVIRONMENTAL CONTOUR ESTABLISHMENT BASED ON OPENLY AVAILABLE EMODNET WAVE AND WIND DATA FOLLOWING HEFFERNAN AND TAWN METHODOLOGIES." Coastal Engineering Proceedings, no. 37 (September 1, 2023): 37. http://dx.doi.org/10.9753/icce.v37.waves.37.

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In this paper, I present methodologies and routines for inference of environmental contours based on openly available data from the European EMODnet service, specifically wind and wave timeseries from oil platform 6200146. The conditional marginal distribution models, known as environmental contours, is established based on measured wind and wave heights, at platform 6200146 located in the North Sea. The data is provided through the openly available data platform, EMODnet. The environmental contour model is established by fitting univariate distributions to each data-series independently, wher

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Freedman, Eric G. "The Role of Diatonicism in the Abstraction and Representation of Contour and Interval Information." Music Perception 16, no. 3 (1999): 365–87. http://dx.doi.org/10.2307/40285797.

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Previous research on melody recognition indicates that listeners can recognize contour information when melodies are retained for brief intervals and can recognize interval information of melodies held in longterm memory. However, past research has failed to control for the diatonicism and familiarity of the melodies. In three experiments, the relative contributions of contour and interval information during the abstraction of novel diatonic and nondiatonic sequences are examined. Listeners recognize the melodic contours of melodies held over an extended retention interval. Additionally, liste

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Lakshmanan, N., B. K. Raghuprasad, N. Gopalakrishnan, R. Sreekala, and G. V. Rama Rao. "Comparative study on damage identification from Iso-Eigen-Value-Change contours and smeared damage model." Structural Engineering and Mechanics 35, no. 6 (2010): 735–58. http://dx.doi.org/10.12989/sem.2010.35.6.735.

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Zhao, Rongchang, Min Wu, Xiyao Liu, Beiji Zou, and Fangfang Li. "Orientation Histogram-Based Center-Surround Interaction: An Integration Approach for Contour Detection." Neural Computation 29, no. 1 (2017): 171–93. http://dx.doi.org/10.1162/neco_a_00911.

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Contour is a critical feature for image description and object recognition in many computer vision tasks. However, detection of object contour remains a challenging problem because of disturbances from texture edges. This letter proposes a scheme to handle texture edges by implementing contour integration. The proposed scheme integrates structural segments into contours while inhibiting texture edges with the help of the orientation histogram-based center-surround interaction model. In the model, local edges within surroundings exert a modulatory effect on central contour cues based on the co-

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Zamorov, V., M. Zamorova, D. Krupko, N. Matvienko, Y. Leonchyk, and Y. Kvach. "Shape Analysis of Otoliths of the Round goby, Neogobius melanostomus (Gobiiformes, Gobiidae), from the Black Sea Basin." Zoodiversity 55, no. 4 (2021): 317–30. http://dx.doi.org/10.15407/zoo2021.04.317.

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The aim of this study was to assess the discriminability of the stocks of the round goby Neogobius melanostomus based on the shape of its otoliths. Recent otolith-shape-based species and stock discrimination studies were using otolith contours in sagittal plane and we are following this approach. We hypothesized the possibility of existence of several geographically separated populations of the round goby. Round gobies have been sampled from different locations of the North-Western Black Sea, otoliths were removed in course of the full biological analysis and photographed in sagittal plane. Pr

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Weisbuch, François, and Jirka Schatz. "Characterizing interlayer edge placement with SEM contours." Journal of Micro/Nanolithography, MEMS, and MOEMS 18, no. 02 (2019): 1. http://dx.doi.org/10.1117/1.jmm.18.2.021203.

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Hui, Wang, and Du Yingqiong. "An integrated level set model with active contours for image segmentation." International Journal of Computer Science Issues 17, no. 1 (2020): 1–10. https://doi.org/10.5281/zenodo.3987094.

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By incorporating the merits of the geodesic active contour (GAC) model and the Chan-Vese (C-V) model, an integrated level set model with active contours is proposed, which can comprehensively utilize edge information and statistic region information of the image. First a flexible edge detection function is designed, which inspired by the idea of total variation (TV) norm. Then a new speed function based on the statistic region information in and out of active contours is constructed, and correspondingly a new level set formulation is obtained. Finally, the model of this paper is proposed which

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Kodur, V. K. R., B. A. Ghani, M. A. Sultan, T. T. Lie, and M. El-Shayeb. "A model for evaluating the fire resistance of contour-protected steel columns." Structural Engineering and Mechanics 12, no. 5 (2001): 559–72. http://dx.doi.org/10.12989/sem.2001.12.5.559.

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Lehar, Steven. "Directional Harmonic Theory: A Computational Gestalt Model to Account for Illusory Contour and Vertex Formation." Perception 32, no. 4 (2003): 423–48. http://dx.doi.org/10.1068/p5011.

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Visual illusions and perceptual grouping phenomena offer an invaluable tool for probing the computational mechanism of low-level visual processing. Some illusions, like the Kanizsa figure, reveal illusory contours that form edges collinear with the inducing stimulus. This kind of illusory contour has been modeled by neural network models by way of cells equipped with elongated spatial receptive fields designed to detect and complete the collinear alignment. There are, however, other illusory groupings which are not so easy to account for in neural network terms. The Ehrenstein illusion exhibit

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Shi, Y. J., S. Wang, Z. J. Jakubek, and B. Simard. "A vacuum ultraviolet laser single-photon zero kinetic energy photoelectron spectroscopic study of the 2E3/2 ground electronic state of CH3Br+." Canadian Journal of Chemistry 82, no. 6 (2004): 1077–82. http://dx.doi.org/10.1139/v04-051.

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The vacuum ultraviolet laser single-photon zero kinetic energy (ZEKE) photoelectron spectrum of the [Formula: see text]2E3/2 ground electronic state of the methyl bromide cation is reported. The spectrum is dominated by the origin band 000 of the transition [Formula: see text]2E3/2 ← [Formula: see text]1A1. In addition, the 210 band and the 311 hot band are observed. All observed bands show similar rotational contours. Simulation of the rotational contour of the origin band yields the first ionization energy of methyl bromide (85 031.2 ± 1.0 cm1) and the rotational constants of the cation in

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Wardani, Dianita, Agus Khumaidi, Rizal Fahmi, Imah Luluk Kusminah, and Basuki Rahmat. "Coating Inspection on Sea Transportation Equipment (Ship) Using Image Processing." Indonesian Journal of Innovation Multidisipliner Research 2, no. 2 (2024): 225–33. http://dx.doi.org/10.69693/ijim.v2i2.133.

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Research in the last decade, particularly in this research there are methods and steps for completion, namely 4 process steps, including: First of all, take samples and image data from the parts of the ship that are being repaired and maintained, Then, in making the prototype tool resulting from the coating, it is assembled using several tools, mini PC is installed with a web camera, next the image for the observation further processes and processed using the edge method contours detection with the help of cany to obtain the contrast and contour from the ship's hull. For next process, uses Neu

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Bravo, Mary, Randolph Blake, and Sharon Morrison. "Cats see subjective contours." Vision Research 28, no. 8 (1988): 861–65. http://dx.doi.org/10.1016/0042-6989(88)90095-8.

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Bostanci, Derya, Serdar Yedier, Dilek Türker, and Ali İşmen. "Morphological variability of otolith organs in three congeneric Pagellus species." Oceanological and Hydrobiological Studies 53, no. 1 (2024): 88–101. http://dx.doi.org/10.26881/oahs-2024.1.10.

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Morphological features of sagittal otoliths in Pagellus acarne, P. bogaraveo, and P. erythrinus samples collected from the Aegean Sea were used to assess the variability both between Pagellus species and between otolith pairs employing scanning electron microscopy (SEM) and contour shape analysis. Twenty-one otolith morphological characters were compared in detail using SEM analysis. Twelve of these characters differ between Pagellus species and are suitable for distinguishing between the three congeneric Pagellus species. Wavelet functions of otolith contour shape were compared for six Pagell

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Croonen, W. L. M., and P. F. M. Kop. "Tonality, Tonal Scheme, and Contour in Delayed Recognition of Tone Sequences." Music Perception 7, no. 1 (1989): 49–67. http://dx.doi.org/10.2307/40285448.

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Two experiments were conducted to test Bartlett and Dowling's conclusion (1980) that the key of a tone sequence strongly influences recognition for short retention intervals, that the influence decreases with increasing retention time, and that the importance of the melodic interval information increases during the retention interval. Five different retention times were used (1,5,8,15, and 30 sec), together with standard tone sequences with a clear tonal scheme and two different contours (two or four directional contour changes). Subjects with moderate musical experience were able to discrimin

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Bonta, Steven. "The lens of firstness: Shamanic/Aboriginal culture as cosmos-sign." Semiotica 2018, no. 221 (2018): 143–73. http://dx.doi.org/10.1515/sem-2016-0139.

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AbstractHaving identified previously (Bonta 2015) the Peircean Category Firstness as the semiotic basis (or cultural Prime Symbol) for Australian Aboriginal culture, this paper examines the “lens” of Firstness as it is manifest in a variety of aboriginal (or “Shamanic”) cultures worldwide. By studying the semiotic contours of religion, language, social organization, and art, we find systemic prioritization of Firstness in its various manifestations, across a wide range of aboriginal cultures from Australia to the Indian Subcontinent to aboriginal Siberia and the New World. Shamanic culture, de

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XIE, ZHIFENG. "NULL ZIG-ZAG WILSON LOOPS IN $\mathcal{N}=4$ SYM." Modern Physics Letters A 25, no. 08 (2010): 627–39. http://dx.doi.org/10.1142/s0217732310032093.

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In planar [Formula: see text] supersymmetric Yang–Mills theory we have studied one kind of (locally) BPS Wilson loops composed of a large number of light-like segments, i.e. null zig-zags. These contours oscillate around smooth underlying spacelike paths. At one-loop in perturbation theory, we have compared the finite part of the expectation value of null zig-zags to the finite part of the expectation value of non-scalar-coupled Wilson loops whose contours are the underlying smooth spacelike paths. In arXiv:0710.1060 [hep-th] it was argued that these quantities are equal for the case of a rect

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Yoo, Joon-Taek, Kyum Joon Park, Kyunglee Lee, and Dasom Lee. "A First Study on Distribution Characteristics of Common Dolphin in Korean Waters: A Study Using Data Collected during the Past 20 Years." Journal of Marine Science and Engineering 11, no. 9 (2023): 1635. http://dx.doi.org/10.3390/jmse11091635.

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The common dolphin (Delphinus delphis) is the second-most bycaught species in Korean waters. To provide key information about their habitat boundaries and hotspots for spatial conservation and management, the spatial use of this species was examined using data obtained from sighting and bycatch surveys of cetaceans in the past 20 years. The 95% minimum convex polygon and 95% density contour of fixed-kernel analysis suggested that the boundary of the home range of common dolphins is limited to the coastal region (Busan–Sokcho) of the East Sea/Sea of Japan. From 50% density contours drawn by ker

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Prabowo, Aditya Rio, Dong Myung Bae, and Jung Min Sohn. "Behavior Prediction of Ship Structure due to Side Impact Scenario by Dynamic-Nonlinear Finite Element Analysis." Applied Mechanics and Materials 862 (January 2017): 253–58. http://dx.doi.org/10.4028/www.scientific.net/amm.862.253.

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The development of safety has become issue especially for marine and ocean vessels. However, the limitless possibilities of various phenomenon on the sea, make the observation and prediction of ship structure are continuously needed. Side impact is one of those phenomenon. Due to the complexity of ship structure, this phenomenon occurs and produces high nonlinearities, which influence the extent and contour of structural behavior. Such interesting phenomenon was reviewed and studied in present paper using dynamic finite element analysis as the effect of the dependent characteristic of phenomen

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Chernomorets, Darya Andreevna, Andrey Alekseevich Chernomorets, Evgeniya Vitalievna Bolgova, and Maria Aleksandrovna Petina. "On estimating the size of informative fragments in the sea surface images." Research result. Information technologies 9, no. 2 (2024): 3–11. http://dx.doi.org/10.18413/2518-1092-2024-9-2-0-1.

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The paper proposes a solution to one of the problems arising in the construction of modern traffic safety systems in marine areas, namely, estimating the size of informative fragments in the image, which it seems advisable to use when detecting foreign objects on the sea surface image. It is proposed to estimate the size of informative fragments based on calculating the average distance between the contours of the wave elements visible in the image, such as their crests, depressions, etc. The contours of these wave elements are determined based on the Canny operator. The estimation of the size

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Gervino, Gianpiero, Giovanni Mana, and Carlo Palmisano. "The ellipsoidal nested sampling and the expression of the model uncertainty in measurements." International Journal of Modern Physics B 30, no. 15 (2016): 1541002. http://dx.doi.org/10.1142/s0217979215410027.

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In this paper, we consider the problems of identifying the most appropriate model for a given physical system and of assessing the model contribution to the measurement uncertainty. The above problems are studied in terms of Bayesian model selection and model averaging. As the evaluation of the “evidence” [Formula: see text], i.e., the integral of Likelihood × Prior over the space of the measurand and the parameters, becomes impracticable when this space has [Formula: see text] dimensions, it is necessary to consider an appropriate numerical strategy. Among the many algorithms for calculating

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Danilatos, G. D. "Gas-flow field in the environmental SEM." Proceedings, annual meeting, Electron Microscopy Society of America 50, no. 2 (1992): 1298–99. http://dx.doi.org/10.1017/s0424820100131127.

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The study of the gas flow in the environmental SEM (ESEM) is important both for the instrument design and for determining the environmental conditions around the specimen. Some results from such a study were published previously and the present report is a continuation from the same work. The Monte Carlo simulation method for the gas flow was used. Of particular importance is the question on the flow field contours as the specimen approaches the pressure limiting aperture (PLA) and the question on the mass density of the supersonic jet formed above the plane of the PLA and on the mass density

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Wei, Xueyun, Wei Zheng, Caiping Xi, and Shang Shang. "Shoreline Extraction in SAR Image Based on Advanced Geometric Active Contour Model." Remote Sensing 13, no. 4 (2021): 642. http://dx.doi.org/10.3390/rs13040642.

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Rapid and accurate extraction of shoreline is of great significance for the use and management of sea area. Remote sensing has a strong ability to obtain data and has obvious advantages in shoreline survey. Compared with visible-light remote sensing, synthetic aperture radar (SAR) has the characteristics of all-weather and all-day working. It has been well-applied in shoreline extraction. However, due to the influence of natural conditions there is a problem of weak boundary in extracting shoreline from SAR images. In addition, the complex micro topography near the shoreline makes it difficult

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Oktaviani, Nadya, Prayudha Hartanto, Ratna Sari Dewi, et al. "Coastline Accuracy Assessment Developed By Using Multi Data Source." Journal of Applied Geospatial Information 7, no. 1 (2023): 762–68. http://dx.doi.org/10.30871/jagi.v7i1.4761.

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Coastline Modeling Accuracy Assessment Developed By Using from Multi-Source Data. The coastal regions need to be developed because many big cities in Indonesia are located in these areas. However, it is crucial to determine the distance from the beach that is safe as the requirement for development along the coastal zone. The term of the beach is very closely affiliated with the coastline. The method of determining the coastline continues to be developed to fulfill the many needs related to the coastline. The coastline has a dynamic position. The land contour along the coast and the tide's sta

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Li, Ce, Yunyan Du, Fuyuan Liang, Jiawei Yi, and V. Chris Lakhan. "A GIS-based method for depicting the characteristics of mesoscale eddies: a case study in the Northern South China Sea." Canadian Journal of Earth Sciences 52, no. 9 (2015): 746–56. http://dx.doi.org/10.1139/cjes-2014-0177.

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The paper presents a geographical information system (GIS)-based method for depicting the characteristics, particularly the internal structures and evolutionary processes, of mesoscale eddies. This was done by examining topologic relations among closed sea surface height (SSH) contours that were reconstructed from the Naval Research Laboratory Navy layered ocean model (NLOM). Different scenarios of the topological relations among the contour lines permitted the identification of the outermost outline of eddies and the depiction of the number of cores in each mesoscale oceanic eddy. With full c

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Musekamp, Jens, Thorsten Reiber, Holger Claus Hoche, Matthias Oechsner, Matthias Weigold, and Eberhard Abele. "Influence of LPBF-Surface Characteristics on Fatigue Properties of Scalmalloy®." Metals 11, no. 12 (2021): 1961. http://dx.doi.org/10.3390/met11121961.

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Laser powder bed fusion (LPBF) has indisputable advantages when designing new components with complex geometries due to toolless manufacturing and the ability to manufacture components with undercuts. However, fatigue properties rely heavily on the surface condition. In this work, in-process surface parameters (three differing contour parameter sets) and post-process surface treatments, namely turning and shot peening, are varied to investigate the influence of each treatment on the resulting fatigue properties of LPBF-manufactured specimens of the aluminium–magnesium–scandium alloy Scalmalloy

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Tinney, Charles. "The effect of nozzle contour on the vibroacoustic loads that form from high area ratio rocket nozzles during sea level launch." Journal of the Acoustical Society of America 153, no. 3_supplement (2023): A42. http://dx.doi.org/10.1121/10.0018085.

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An accurate assessment of the vibro-acoustic loads that form during startup of large area ratio rocket nozzles is important for sea-level launch vehicle design and certification. These loads are driven principally by various flow and shock patterns that form inside the nozzle, which are unique to the nozzle contour. This presentation will review a number of laboratory-scale measurements of different nozzle contours and configurations reported by Baars and Tinney, Exp. Fluids, (2013), Donald et al. AIAA Journal (2014), Canchero etal. AIAA Journal (2016), and Rojo et al. AIAA Journal (2016) as i

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Colas-Blaise, Marion. "Texte, textualisation et pratique : Le devenir de l'énonciation." Semiotica 2017, no. 219 (2017): 293–314. http://dx.doi.org/10.1515/sem-2017-0065.

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RésuméConvoquant le cadre théorique de la sémiotique (post-)greimassienne, cette contribution se propose de cibler quelques-unes des étapes ayant marqué la réflexion sur l’énonciation depuis les années 1970–1980, avant d’esquisser les contours d’une sémiotique de l’énonciation comme pratique située. Ainsi, après avoir rappelé que la théorie de l’énonciation « énoncée » (Greimas et Courtés 1979) invite à repérer les marques laissées dans le texte par l’énonciation, qui est présupposée, virtuelle et hypothétique, nous visons à rendre compte de la dynamique de la constitution du texte (textualisa

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Wei, Hui, and Jingmeng Li. "Computational Model for Global Contour Precedence Based on Primary Visual Cortex Mechanisms." ACM Transactions on Applied Perception 18, no. 3 (2021): 1–21. http://dx.doi.org/10.1145/3459999.

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The edges of an image contains rich visual cognitive cues. However, the edge information of a natural scene usually is only a set of disorganized unorganized pixels for a computer. In psychology, the phenomenon of quickly perceiving global information from a complex pattern is called the global precedence effect (GPE). For example, when one observes the edge map of an image, some contours seem to automatically “pop out” from the complex background. This is a manifestation of GPE on edge information and is called global contour precedence (GCP). The primary visual cortex (V1) is closely related

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Lebedev, P. P., O. V. Mayorova, and U. E. Skorobogatova. "Spatial connections of elements on digital maps." Zemleustrojstvo, kadastr i monitoring zemel' (Land management, cadastre and land monitoring), no. 6 (May 31, 2025): 360–64. https://doi.org/10.33920/sel-4-2406-06.

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Li, Da, Botao Xie, Tao Liu, Zhuolantai Bai, Bigui Huang, and Junrong Wang. "Response Extremes of Floating Offshore Wind Turbine Based on Inverse Reliability and Environmental Contour Method." Journal of Marine Science and Engineering 12, no. 6 (2024): 1032. http://dx.doi.org/10.3390/jmse12061032.

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Floating structures are subject to complex marine conditions. To ensure their safety, reliability analysis needs to be conducted during the design phase. However, because of the complexity of traditional full long-term analysis, the environmental contour method (ECM) based on the inverse reliability method, which can combine accuracy and efficiency, is extensively used. Due to the unique environment in the South China Sea, the probabilistic characteristics of three-dimensional (3D) environmental parameters of wind, wave and current are investigated. The ECs of the target sea are established vi

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Azisah, Nadya Nur, Kaharuddin Kaharuddin, and Abdul Muis Said. "SUPRASEGMENTAL SOUNDS PRODUCED BY THE STUDENTS OF ENGLISH EDUCATION DEPARTMENT AT UIN ALAUDDIN MAKASSAR." English Language Teaching for EFL Learners 3, no. 1 (2021): 40. http://dx.doi.org/10.24252/elties.v3i1.19091.

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This study aims to see the extent the ability of students to pronounce English words who have studied English for many years and studied phonetics, then compare it with the pronunciation of native English speakers. The benefit of this research is that it can increase students' awareness in improving their speaking skills by trying to find new strategies to support their skill improvement. Phonetic and phonology theory is used as concept of this study. The research uses descriptive qualitative method with data collection techniques through recording to retrieve the audio of the samples and nati

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Lin, Manqing, Lan Zhang, Xiqi Liu, Yuanyou Xia, Jiaqi He, and Xiaosu Ke. "The Meso-Analysis of the Rock-Burst Debris of Rock Similar Material Based on SEM." Advances in Civil Engineering 2020 (April 3, 2020): 1–13. http://dx.doi.org/10.1155/2020/9168908.

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In order to explore the specimen failure characteristics during rock-burst under different gradient stress conditions, in this paper, a novel experimental technique was proposed; a common series of tests under two gradient stress paths were conducted on rock similar material specimens using the true-triaxial gradient and hydraulic-pneumatic combined test apparatus. And plaster was used as the rock similar material. In the experimental process, several rock-burst debris with area sizes of 100 mm2 were collected, and the fractal dimensions of typical detrital section crystal contours were analyz

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陆, 佳艳. "License Plate Location Based on Morphology and Contour Recognition." Software Engineering and Applications 10, no. 04 (2021): 542–48. http://dx.doi.org/10.12677/sea.2021.104058.

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Alakoz, V. V. "The development and implementation of programs for the use and protection of agricultural lands in the regional projects for the development of agriculture and agricultural clusters, and state regulation of agricultural lands fertility." Zemleustrojstvo, kadastr i monitoring zemel' (Land management, cadastre and land monitoring), no. 5 (April 19, 2021): 325–30. http://dx.doi.org/10.33920/sel-04-2105-01.

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Land legislation - the Land Code of the Russian Federation, the Federal Law " Land Management", the Federal Law "Turnover of Agricultural Lands", the Federal Law "State Regulation of Agricultural Lands Fertility" proclaimed the obligation of state authorities, local governments, legal entities and individuals realize their activities with preservation of land as the most important component of the environment and a natural resource, and carry out measures for the reproduction of the fertility of agricultural lands. There are proclamations, but no effective economic, administrative mechanisms a

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Sethi, Gaurav, and B. S. Saini. "Computer Aided Diagnosis of Abdomen Diseases Using Curvelet Transform." International Journal of Image and Graphics 16, no. 03 (2016): 1650013. http://dx.doi.org/10.1142/s0219467816500133.

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Abdomen related diseases are responsible of many deaths every year. These deaths can be reduced by early diagnosis of abdomen diseases. Computer aided diagnosis (CAD) can play vital role in early detection of diseases. Hence, a novel CAD is proposed in this paper that can diagnose abdomen diseases like Hepatocellular carcinoma, cysts and Calculi using statistical curvelet texture descriptors. The proposed CAD is divided into four stages: (a) Image segmentation using active contours, (b) feature extraction, (c) feature selection and (d) abdomen disease classification. The regions of interest (R

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Natasya, Dea Fitri, Entin Daningsih, and Anisyah Yuniarti. "Distribution of Ferns at Different Heights in Gunung Raya Protected Forest, West Kalimantan." BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan 12, no. 2 (2024): 238. http://dx.doi.org/10.22373/biotik.v12i2.25239.

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Abstract: Ferns are a type of biodiversity that is spread to live on the forest floor and plays an important role in ecological functions, such as humus formation, protecting soil from erosion, and maintaining soil moisture. This study aims to determine the distribution of fern species at different heights in the Gunung Raya Protection Forest, Temajuk Village and their potential for the community. The method in this study, namely the cruising method to observe ferns on soil contours with an altitude of 25-125 meters above sea level, 125-225 meters above sea level, and 225-325 meters above sea

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Weinberger, Norman M., and Thomas M. McKenna. "Sensitivity of Single Neurons in Auditory Cortex to Contour: Toward a Neurophysiology of Music Perception." Music Perception 5, no. 4 (1988): 355–89. http://dx.doi.org/10.2307/40285407.

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The responses of single neurons in the primary (AI) and secondary (AII) auditory cortical fields of waking cats were recorded during presentation of sequences of five iso-intensity tones. Tonal contour was varied by employing sequences that either increased or decreased monotonically in frequency, or in which contour was non-monotonic. The vast majority of neurons in both auditory fields (84%) exhibited sensitivity to tonal contour, that is, the response to at least one frequency (usually more) in a sequence differed significantly between two or more types of contour. Although all of the mecha

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Mulder, Thierry, Emmanuelle Ducassou, Vincent Hanquiez, et al. "Contour current imprints and contourite drifts in the Bahamian archipelago." Sedimentology 66, no. 4 (2019): 1192–221. http://dx.doi.org/10.1111/sed.12587.

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Abraham, Zubin, Pang-Ning Tan, Perdinan, Julie A. Winkler, Shiyuan Zhong, and Malgorzata Liszewska. "Contour regression: A distribution-regularized regression framework for climate modeling." Statistical Analysis and Data Mining: The ASA Data Science Journal 7, no. 4 (2014): 272–81. http://dx.doi.org/10.1002/sam.11222.

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