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Journal articles on the topic 'Prediction ellipse'

Author: Grafiati

Published: 28 May 2022

Last updated: 30 July 2025

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1

Wu, Heng, Yanjie Liu, Chao Wang, and Yanlong Wei. "Global Semantic Localization from Abstract Ellipse-Ellipsoid Model and Object-Level Instance Topology." Remote Sensing 16, no. 22 (2024): 4187. http://dx.doi.org/10.3390/rs16224187.

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Robust and highly accurate localization using a camera is a challenging task when appearance varies significantly. In indoor environments, changes in illumination and object occlusion can have a significant impact on visual localization. In this paper, we propose a visual localization method based on an ellipse-ellipsoid model, combined with object-level instance topology and alignment. First, we develop a CNN-based (Convolutional Neural Network) ellipse prediction network, DEllipse-Net, which integrates depth information with RGB data to estimate the projection of ellipsoids onto images. Seco

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Begnaud, Michael L., Dale N. Anderson, Stephen C. Myers, Brian Young, James R. Hipp, and W. Scott Phillips. "Updates to the Regional Seismic Travel Time (RSTT) Model: 2. Path-dependent Travel-time Uncertainty." Pure and Applied Geophysics 178, no. 2 (2021): 313–39. http://dx.doi.org/10.1007/s00024-021-02657-7.

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AbstractThe regional seismic travel time (RSTT) model and software were developed to improve travel-time prediction accuracy by accounting for three-dimensional crust and upper mantle structure. Travel-time uncertainty estimates are used in the process of associating seismic phases to events and to accurately calculate location uncertainty bounds (i.e. event location error ellipses). We improve on the current distance-dependent uncertainty parameterization for RSTT using a random effects model to estimate slowness (inverse velocity) uncertainty as a mean squared error for each model parameter.

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Liu, Kang, Yonggang Lu, Rubing Bai, et al. "Ellipse Detection with Applications of Convolutional Neural Network in Industrial Images." Electronics 12, no. 16 (2023): 3431. http://dx.doi.org/10.3390/electronics12163431.

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Ellipse detection has a very wide range of applications in the field of industrial production, especially in the geometric detection of metallurgical hinge pins. However, the factors in industrial images, such as small object size and incomplete ellipse in the image boundary, bring challenges to ellipse detection, which cannot be solved by existing methods. This paper proposes a method for ellipse detection in industrial images, which utilizes the extended proposal operation to prevent the loss of ellipse rotation angle features during ellipse regression. Moreover, the Gaussian angle distance

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Cooke, D. H. "On Prediction of Off-Design Multistage Turbine Pressures by Stodola’s Ellipse." Journal of Engineering for Gas Turbines and Power 107, no. 3 (1985): 596–606. http://dx.doi.org/10.1115/1.3239778.

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The variation of extraction pressures with flow to the following stage for high backpressure, multistage turbine designs is highly nonlinear in typical cogeneration applications where the turbine nozzles are not choked. Consequently, the linear method based on Constant Flow Coefficient, which is applicable for uncontrolled expansion with high vacuum exhaust, as is common in utility power cycles, cannot be used to predict extraction pressures at off-design loads. The paper presents schematic examples and brief descriptions of cogeneration designs, with background and theoretical derivation of a

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Chung, David D., and Richard Wolfgramm. "Maxillary arch perimeter prediction using Ramanujan's equation for the ellipse." American Journal of Orthodontics and Dentofacial Orthopedics 147, no. 2 (2015): 235–41. http://dx.doi.org/10.1016/j.ajodo.2014.10.022.

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Zerega, Ryan, Carolyn Killelea, Justin Losciale, Mallory Faherty, and Timothy Sell. "Examination of the Feasibility of a 2-Dimensional Portable Assessment of Knee Joint Stability: A Pilot Study." Journal of Applied Biomechanics 36, no. 6 (2020): 381–89. http://dx.doi.org/10.1123/jab.2020-0024.

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Rupture of the anterior cruciate ligament (ACL) remains extremely common, with over 250,000 injuries annually. Currently, clinical tests have poor utility to accurately screen for ACL injury risk in athletes. In this study, the position of a knee marker was tracked in 2-dimensional planes to predict biomechanical variables associated with ACL injury risk. Three-dimensional kinematics and ground reaction forces were collected during bilateral, single-leg stop-jump tasks for 44 healthy male military personnel. Knee marker position data were extracted to construct 2-dimensional 95% prediction ell

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Liu, Bo, Fengying Yang, Guangzhi Zhang, and Longfei Zhao. "Pre-Stack Fracture Prediction in an Unconventional Carbonate Reservoir: A Case Study of the M Oilfield in Tarim Basin, NW China." Energies 17, no. 9 (2024): 2061. http://dx.doi.org/10.3390/en17092061.

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The reservoir of the M oilfield in Tarim Basin is an unconventional fracture-cave carbonate rock, encompassing various reservoir types like fractured, fracture-cave, and cave, exhibiting significant spatial heterogeneity. Despite the limited pore space in fractures, they can serve as seepage pathways, complicating the connectivity between reservoirs. High-precision fracture prediction is critical for the effective development of these reservoirs. The conventional post-stack seismic attribute-based approach, however, is limited in its ability to detect small-scale fractures. To address this lim

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Caliendo, Angela M., Mona D. Shahbazian, Carl Schaper, et al. "A Commutable Cytomegalovirus Calibrator Is Required to Improve the Agreement of Viral Load Values between Laboratories." Clinical Chemistry 55, no. 9 (2009): 1701–10. http://dx.doi.org/10.1373/clinchem.2009.124743.

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Abstract Background: Viral load testing for cytomegalovirus (CMV) is an important diagnostic tool for the management of transplant recipients and immunocompromised individuals; however, inconsistency among laboratories in quantitative measurements of viral load limits interinstitutional comparisons. These inconsistencies stem from the lack of assays cleared by the US Food and Drug Administration, the absence of international standards, the wide variety of CMV-extraction and -detection methods, and differences in materials used for calibration. A critical component of standardization is the use

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Nishimoto, H., A. Ohtani, A. Nakai, and H. Hamada. "Generation and prediction methods for circumferential distribution changes in the braiding angle on a cylindrical braided fabric." Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 224, no. 2 (2010): 71–78. http://dx.doi.org/10.1243/14644207jmda281.

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Braided composites have an advantage in that their stiffness distribution can be changed by changing the orientation angle of the fibre bundle, called the ‘braiding angle’. To change the braiding angle on a cylindrical braided fabric, the longitudinal velocity of the mandrel and the angular rate of the spindle in a braider should be changed. However, these changes are only in the longitudinal direction and not in the circumferential direction. A method for generating changes in the circumferential direction is proposed. The method sets an elliptical guide ring to provide fibres towards the lon

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Whang, Allen Jong-Woei, Yi-Yung Chen, Wei-Chieh Tseng, et al. "Pupil Size Prediction Techniques Based on Convolution Neural Network." Sensors 21, no. 15 (2021): 4965. http://dx.doi.org/10.3390/s21154965.

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The size of one’s pupil can indicate one’s physical condition and mental state. When we search related papers about AI and the pupil, most studies focused on eye-tracking. This paper proposes an algorithm that can calculate pupil size based on a convolution neural network (CNN). Usually, the shape of the pupil is not round, and 50% of pupils can be calculated using ellipses as the best fitting shapes. This paper uses the major and minor axes of an ellipse to represent the size of pupils and uses the two parameters as the output of the network. Regarding the input of the network, the dataset is

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Taborri, Juri, Luca Molinaro, Adriano Santospagnuolo, Mario Vetrano, Maria Chiara Vulpiani, and Stefano Rossi. "A Machine-Learning Approach to Measure the Anterior Cruciate Ligament Injury Risk in Female Basketball Players." Sensors 21, no. 9 (2021): 3141. http://dx.doi.org/10.3390/s21093141.

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Anterior cruciate ligament (ACL) injury represents one of the main disorders affecting players, especially in contact sports. Even though several approaches based on artificial intelligence have been developed to allow the quantification of ACL injury risk, their applicability in training sessions compared with the clinical scale is still an open question. We proposed a machine-learning approach to accomplish this purpose. Thirty-nine female basketball players were enrolled in the study. Leg stability, leg mobility and capability to absorb the load after jump were evaluated through inertial se

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Jiang, Li Li, Xi Bin Wei, Xun Liu, and Tao Zeng. "Prediction for Strength of 3D Braided Composites Based on Helix Geometry Model." Applied Mechanics and Materials 387 (August 2013): 64–67. http://dx.doi.org/10.4028/www.scientific.net/amm.387.64.

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A numerical model capable of calculating the strength of 3D braided composites is developed, based on the micro-structure of 3D four-directional braided composites and the assumption of the braiding yarn with a helix configuration and ellipse cross-section. The strength of 3D braided composites have been predicted through a finite multiphase element method (FMEM). Comparison was conducted for those from the present model and experiment. The results are in good agreements with the experimental results in the previous literature. The influences of braiding angle on the strength are also studied.

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Hashemian, B., and HM Shodja. "Effective anti-plane moduli of couple stress composites containing elliptic multi-coated nano-fibers with interfacial damage and variational bounds." International Journal of Damage Mechanics 30, no. 9 (2021): 1351–76. http://dx.doi.org/10.1177/1056789521992087.

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Prediction of the anti-plane moduli of solids consisting of a given distribution of unidirectionally aligned elliptic multi-coated fibers with interfacial damage is the focus of this paper. The fibers and their coating layers may be in the order of nano or micro scales. All the constituent phases of the composite are supposed to be described in terms of couple stress elasticity. Accordingly, the bounds for the overall shear moduli of the aforementioned composites are provided by employing the principles of minimum potential and complementary energies. Certain subtleties associated with the ell

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Zou, Qian, Changhua Huang, and Shizhu Wen. "Elastohydrodynamic Film Thickness in Elliptical Contacts With Spinning and Rolling." Journal of Tribology 121, no. 4 (1999): 686–92. http://dx.doi.org/10.1115/1.2834124.

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In this paper, a theoretical model for the film thickness prediction of elastohydrodynamic lubrication of elliptical contacts with spinning and rolling/sliding motions is presented, in which 1) an effective ellipticity ratio ke is introduced to present the ellipse feature instead of the normal ellipticity ratio k in case of that the entraining velocity at the center of contact ellipse is at an angle with minor axis, 2) Roelands and Dowson-Higginson’s equations are adopted to express the influence of pressure upon lubricant viscosity and density, 3) multilevel/multigrid techniques, with low com

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15

Zins, Matthieu, Gilles Simon, and Marie-Odile Berger. "Object-Based Visual Camera Pose Estimation From Ellipsoidal Model and 3D-Aware Ellipse Prediction." International Journal of Computer Vision 130, no. 4 (2022): 1107–26. http://dx.doi.org/10.1007/s11263-022-01585-w.

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Matsueda, Takahiro. "A New Evaluation Method to Calculate Crack Initiation Limit with Modified Crack Aspect Ratios in Notched Specimen of Carbon Steels." Applied Mechanics and Materials 563 (May 2014): 80–84. http://dx.doi.org/10.4028/www.scientific.net/amm.563.80.

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Aspect ratio is a key factor to calculate stress intensity factor (SIF) K using fracture mechanics. While cracks are approximated to be semi-circle or semi-ellipse for simply evaluation, their shapes are changed by stress concentration source. In this study, a new method to modify aspect ratio of a crack at a notch root is proposed. Modified aspect ratio in this method succeeded to decrease prediction error of fatigue crack initiation stress, σw1 which was calculated using experimental value.

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Aghera, Rahul, Hina Desai, Padmaja Sharma, Nirav Dholakiya, and Nishil Agrawal. "Maxillary and Mandibular Arch Perimeter Prediction Using Ramanujan's Equation for the Ellipse-In vitro Study." British Journal of Medicine and Medical Research 17, no. 9 (2016): 1–9. http://dx.doi.org/10.9734/bjmmr/2016/28868.

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18

Li, Jing, Duan Huang, Chuxiang Chen, et al. "Prediction of Forest-Fire Occurrence in Eastern China Utilizing Deep Learning and Spatial Analysis." Forests 15, no. 9 (2024): 1672. http://dx.doi.org/10.3390/f15091672.

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Forest fires are a major natural calamity that inflict substantial harm on forest resources and the socio-economic landscape. The eastern region of China is particularly susceptible to frequent forest fires, characterized by high population density and vibrant economic activities. Precise forecasting in this area is essential for devising effective prevention strategies. This research utilizes a blend of kernel density analysis, autocorrelation analysis, and the standard deviation ellipse method, augmented by geographic information systems (GISs) and deep-learning techniques, to develop an acc

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19

Jara, Daniel, Enrique Ortega, Miguel-Ángel Gómez-Ruano, Matthias Weigelt, Brittany Nikolic, and Pilar Sainz de Baranda. "Physical and Tactical Demands of the Goalkeeper in Football in Different Small-Sided Games." Sensors 19, no. 16 (2019): 3605. http://dx.doi.org/10.3390/s19163605.

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Background: Several studies have examined the differences between the different small-sided game (SSG) formats. However, only one study has analysed how the different variables that define SSGs can modify the goalkeeper’s behavior. The aim of the present study was to analyze how the modification of the pitch size in SSGs affects the physical demands of the goalkeepers. Methods: Three professional male football goalkeepers participated in this study. Three different SSG were analysed (62 m × 44 m for a large pitch; 50 m × 35 m for a medium pitch and 32 m × 23 m for a small pitch). Positional da

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Yu, Yongjian, Guoding Chen, Jishun Li, Yujun Xue, and Bitao Pang. "Prediction Method for the Radial Runout of Inner Ring in Cylindrical Roller Bearings." Mathematical Problems in Engineering 2017 (2017): 1–13. http://dx.doi.org/10.1155/2017/6584561.

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The motion error of assembled bearing depends on the geometric profile of bearing components. Therefore, it is crucial to establish the relationship between geometric error of bearing components and motion error of assembled bearing, which contributes to improving the rotational accuracy of assembled bearing in the design and machining of the bearing. The main purpose of this research is to propose an accurate method for predicting the radial runout of inner ring based on the geometrical constraint model of cylindrical roller bearings. In the geometrical constraint model, dimension and form er

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21

Wu, Wen Yan, Qiang Liu, Yong Zhou Lin, and Zhi Jian Zong. "Investigation on Rapid Prediction of Elastic Properties for Woven Fabric Composites." Advanced Materials Research 535-537 (June 2012): 247–52. http://dx.doi.org/10.4028/www.scientific.net/amr.535-537.247.

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In order to simplify the performance analysis of woven fabric composites, the parametric micro-geometry model and APDL program are applied on elastic properties prediction. Firstly, the internal microstructure of woven fabric composites were observed using microscope. Seconldy, the parametric micro-geometry model was built using the defined equations to describe the shape of cross-section, the yarn path and their relations in Pro/e software. The cross-section of yarn was defined as ellipse curve ,while the yarn path was defined as sinusoidal and straight lines. Finally, the model was imported

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22

Nikushchenko, Dmitry, Anton Stepin, Ekaterina Nikitina, et al. "A Simplified Method of Iceberg Hydrodynamic Parameter Prediction." Water 15, no. 10 (2023): 1843. http://dx.doi.org/10.3390/w15101843.

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The present article is devoted to the safe operation of oil platforms in difficult ice conditions. To ensure the safety of offshore facilities, it is essential to deviate a drifting iceberg’s trajectory that may lead to an emergency with the help of available technological means. To reliably predict the behaviour of icebergs when they are towed or deviate from their previous course, it is necessary to determine the hydrodynamic and aerodynamic characteristics of the iceberg. This paper proposes a simplified method for determining the hydrodynamic and aerodynamic characteristics of an iceberg.

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Liu, Jianqiang, Hu Tan, Yunming Shi, Yu Ai, Shaoyong Chen, and Chenyang Zhang. "Research on Diagnosis and Prediction Method of Stator Interturn Short-Circuit Fault of Traction Motor." Energies 15, no. 10 (2022): 3759. http://dx.doi.org/10.3390/en15103759.

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The traction motor (TM) is an essential part of the high-speed train, the health condition of which determines the quality and safety of the vehicle. Hence, this study proposed a novel approach to diagnosing and predicting the TM stator interturn short-circuit fault (SISCF). Based on the Park vector (PV) of the stator current, this method could overcome the interference of current sensor errors, null shift, and motor frequency fluctuations in the actual conditions. More specifically, Park’s transformation was used to obtain the PV of the stator current. Then, the PV was fitted to obtain the el

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Sobbouhi, Ali Reza, and Abolfazl Vahedi. "Online synchronous generator out-of-step prediction by ellipse fitting on acceleration power – Speed deviation curve." International Journal of Electrical Power & Energy Systems 119 (July 2020): 105965. http://dx.doi.org/10.1016/j.ijepes.2020.105965.

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SHAHIDIAN, AZADEH, and ARASH GHORBANNIA HASSANKIADEH. "STRESS ANALYSIS OF INTERNAL CAROTID ARTERY WITH LOW STENOSIS LEVEL: THE EFFECT OF MATERIAL MODEL AND PLAQUE GEOMETRY." Journal of Mechanics in Medicine and Biology 17, no. 06 (2017): 1750098. http://dx.doi.org/10.1142/s0219519417500981.

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Stress concentration in carotid stenosis has been proven to assist plaque morphology in disease diagnosis and vulnerability. This work focuses on numerical analysis of stress and strain distribution in the cross-section of internal carotid artery using a 2D structure-only method. The influence of four different idealized plaque geometries (circle, ellipse, oval and wedge) is investigated. Numerical simulations are implemented utilizing linear elastic model along with four hyperelastic constitutive laws named neo-Hookean, Ogden, Yeoh and Mooney–Rivlin. Each case is compared to the real geometry

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Wu, Wenbo, Tianji Zou, Lu Zhang, Ke Wang, and Xuzhi Li. "Similarity-Based Remaining Useful Lifetime Prediction Method Considering Epistemic Uncertainty." Sensors 23, no. 23 (2023): 9535. http://dx.doi.org/10.3390/s23239535.

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Measuring the similarity between two trajectories is fundamental and essential for the similarity-based remaining useful life (RUL) prediction. Most previous methods do not adequately account for the epistemic uncertainty caused by asynchronous sampling, while others have strong assumption constraints, such as limiting the positional deviation of sampling points to a fixed threshold, which biases the results considerably. To address the issue, an uncertain ellipse model based on the uncertain theory is proposed to model the location of sampling points as an observation drawn from an uncertain

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Odle, Brooke M., Lisa M. Lombardo, Musa L. Audu, and Ronald J. Triolo. "Experimental Implementation of Automatic Control of Posture-Dependent Stimulation in an Implanted Standing Neuroprosthesis." Applied Bionics and Biomechanics 2019 (March 14, 2019): 1–11. http://dx.doi.org/10.1155/2019/2639271.

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Knowledge of the upper extremity (UE) effort exerted under real-world conditions is important for understanding how persons with motor or sensory disorders perform the postural shifts necessary to complete many activities of daily living while standing. To this end, a feedback controller, named the “Posture Follower Controller”, was developed to aid in task-dependent posture shifting by individuals with spinal cord injury standing with functional neuromuscular stimulation. In this experimental feasibility study, the controller modulated activation to the paralyzed lower extremity muscles as a

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Harris, T. A., and Wei Kuei Yu. "Lundberg-Palmgren Fatigue Theory: Considerations of Failure Stress and Stressed Volume." Journal of Tribology 121, no. 1 (1999): 85–89. http://dx.doi.org/10.1115/1.2833815.

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Load ratings and fatigue life prediction of rolling bearings is based on the Lundberg-Palmgren theory first published in Sweden in 1947. The basic equation of this theory includes the stressed volume of material in the bearing raceway subsurfaces as a major parameter. This volume of material is simplistically determined to have a nearly rectangular subsurface cross-sectional area bounded by the length of the maximum contact area ellipse and the depth at which the maximum failure-causing stress occurs. The latter stress is assumed to be effective over this area. In fact, a distribution of stres

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Janeković, I., and M. Kuzmić. "Numerical simulation of the Adriatic Sea principal tidal constituents." Annales Geophysicae 23, no. 10 (2005): 3207–18. http://dx.doi.org/10.5194/angeo-23-3207-2005.

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Abstract. The primary goal of this study was to incorporate data-derived harmonic constants into a complex dynamic model using a form of variational data assimilation, with a view to improve the prediction of 7 dominant tidal constituents in the Adriatic Sea. Firstly, harmonic-constant data for 6 Adriatic stations were fed into a steady-state, 3-D, forward/inverse model to furnish optimal boundary conditions (OBCs). Calculated OBCs were then used to derive individual constituent responses, as well as to synthesise seven-constituent boundary conditions for the time stepping, 3-D model. A separa

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Margutti, Ana V. B., Jacqueline P. Monteiro, and José S. Camelo. "Reference distribution of the bioelectrical impedance vector in healthy term newborns." British Journal of Nutrition 104, no. 10 (2010): 1508–13. http://dx.doi.org/10.1017/s000711451000245x.

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Bioelectrical impedance vector analysis (BIVA) is a new method that is used for the routine monitoring of the variation in body fluids and nutritional status with assumptions regarding body composition values. The aim of the present study was to determine bivariate tolerance intervals of the whole-body impedance vector and to describe phase angle (PA) values for healthy term newborns aged 7–28 d. This descriptive cross-sectional study was conducted on healthy term neonates born at a low-risk public maternity. General and anthropometric neonatal data and bioelectrical impedance data (800 μA–50

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Zhao, Bolin. "Seeking optimal parameters for achieving a lightweight reservoir computing: A computational endeavor." Electronic Research Archive 30, no. 8 (2022): 3004–18. http://dx.doi.org/10.3934/era.2022152.

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<abstract><p>Reservoir computing (RC) is a promising approach for <italic>model-free</italic> prediction of complex nonlinear dynamical systems. Here, we reveal that the randomness in the parameter configurations of the RC has little influence on its short-term prediction accuracy of chaotic systems. This thus motivates us to articulate a new reservoir structure, called homogeneous reservoir computing (HRC). To further gain the optimal input scaling and spectral radius, we investigate the forecasting ability of the HRC with different parameters and find that there is an

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Handayani, Martuti Dwi, Fitrian Rayasari, Munaya Fauziah, Wati Jumaiyah, and Amelia Asmara. "Faktor Prediksi yang Berhubungan dengan Tingkat Kelelahan pada Pasien Diabetes Melitus Tipe 2." Journal of Telenursing (JOTING) 5, no. 2 (2023): 2623–31. http://dx.doi.org/10.31539/joting.v5i2.7515.

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This study aims to prove self-management factors, self-efficacy, and PSIA conditions as a prediction of the level of fatigue of diabetes ellipse cross-station patients. The results showed a relationship between age (p = 0.0001) and the time it was diagnosed (p = 0.0005). HB1AC (P = 0,0005), Self Management (P = 0.0001), Self Efficacy (P = 0,0001), and Psychological Conditions (P = 0,0005). CONCLUSION: the level of fatigue in patients with type 2 diabetes mellitus in friendship hospitals is relatively highly influenced by age variables, long diagnoses, HB1AC, self-management, self-efficacy, and

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Fu, Chunling, Lin Zhou, Zhentao Hu, Yong Jin, Ke Bai, and Chen Wang. "LEACH-MTC: A Network Energy Optimization Algorithm Constraint as Moving Target Prediction." Applied Sciences 11, no. 19 (2021): 9064. http://dx.doi.org/10.3390/app11199064.

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When some nodes cooperatively track moving targets in a wireless sensor network, some things including network working node selection and network energy consumption are influenced. Thus, this paper proposes an improved algorithm LEACH-MTC (LEACH with Moving Target Constraint) based on low energy adaptive clustering hierarchy protocol (LEACH). First, based on the two-step linearization of the nonlinear dynamic model, the state of the nonlinear moving target is predicted by the extended Kalman filter (EKF). Second, combining the state prediction of the moving target and the performance of collab

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Luo, Tao, Gangwei Fan, Shizhong Zhang, Shang Ren, Yibo Fan, and Ruiliang Shen. "A Coal Bump Risk Assessment and Prediction Model Based on Multiparameter Indices." Geofluids 2022 (March 16, 2022): 1–10. http://dx.doi.org/10.1155/2022/2090809.

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Coal bump, a common dynamic disaster in mining of deep coal resources, its assessing and predicting is an important component in safety management. This paper presents a model to assess and predict coal bump risk based on multiparameter indices. A new energy accumulation index S was proposed by considering acoustic emission and electromagnetic emission signal characteristics in mine shocks. Combined with indices E (energy of microseisms) and N (frequency of microseisms) of microseismic monitoring, a static and dynamic coal bump risk assessment and prediction model was established. We studied c

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Zhang, Biao, Shikuan Song, Chenghu Jing, and Dong Xiang. "Displacement prediction and optimization of a non-circular planetary gear hydraulic motor." Advances in Mechanical Engineering 13, no. 11 (2021): 168781402110626. http://dx.doi.org/10.1177/16878140211062690.

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The non-circular planetary gear hydraulic motor is a low-speed and high-torque hydraulic motor with excellent performance. It has the characteristics of a wide speed range, low weight and is widely used in various fields. Aiming to solve the problem of there being no intuitive formula for calculating the displacement of the non-circular planetary gear hydraulic motor at present, based on the analysis of the effects of structural parameters on the displacement of the motor, this paper proposes a formula for calculating the displacement of a non-circular planetary gear hydraulic motor when the p

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Guardeño, Rafael, Manuel J. López, Jesús Sánchez, Alberto González, and Agustín Consegliere. "A Robust Reactive Static Obstacle Avoidance System for Surface Marine Vehicles." Sensors 20, no. 21 (2020): 6262. http://dx.doi.org/10.3390/s20216262.

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This paper is centered on the guidance systems used to increase the autonomy of unmanned surface vehicles (USVs). The new Robust Reactive Static Obstacle Avoidance System (RRSOAS) has been specifically designed for USVs. This algorithm is easily applicable, since previous knowledge of the USV mathematical model and its controllers is not needed. Instead, a new estimated closed-loop model (ECLM) is proposed and used to estimate possible future trajectories. Furthermore, the prediction errors (due to the uncertainty present in the ECLM) are taken into account by modeling the USV’s shape as a tim

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Yang, B. D., J. J. Chen, and C. H. Menq. "Prediction of Resonant Response of Shrouded Blades With Three-Dimensional Shroud Constraint." Journal of Engineering for Gas Turbines and Power 121, no. 3 (1999): 523–29. http://dx.doi.org/10.1115/1.2818504.

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In this paper, the three-dimensional shroud contact kinematics of a shrouded blade system is studied. The assumed blade motion has three components, namely axial, tangential, and radial components, which result in a three dimensional relative motion across the shroud interface. The resulting relative motion can be decomposed into two components. The first one is on the contact plane and can induce stick-slip friction. The other component is perpendicular to the contact plane and can cause variation of the contact normal load and, in extreme circumstances, separation of the two contacting surfa

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Roşca, Radu, Petru Cârlescu, and Ioan Ţenu. "A semi-empirical traction prediction model for an agricultural tyre, based on the super ellipse shape of the contact surface." Soil and Tillage Research 141 (August 2014): 10–18. http://dx.doi.org/10.1016/j.still.2014.03.007.

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Akbar, Aulia Ifnu, Zulfahrizal Zulfahrizal, and Agus Arip Munawar. "Desain dan Uji Performansi Instrument Berbasis Teknologi Laser Photo-Accoustics untuk Uji Cepat Kualitas Mangga." Jurnal Ilmiah Mahasiswa Pertanian 2, no. 3 (2017): 308–20. http://dx.doi.org/10.17969/jimfp.v2i3.3720.

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Abstrak: Kandungan kadar gula pada buah mangga selalu dilakukan metode destruktif yaitu dengan cara mangga diperas sari buahnya dan dilihat oBrix dengan menggunakan alat refraktometer. Penelitian ini bertujuan untuk merancang alat laser Photo-Acoustics (LPAS) untuk mendeteksi cepat kadar gula pada buah mangga. Penelitian ini menggunakan alat laser He-Ne dan self developed LPAS single beam dengan sensor piezoelectric transducer dan bahan penelitian ini adalah mangga jenis udang yang diperoleh dari kebun sare Aceh Besar. Penelitian ini menggunakan model prediksi yang dibangun dengan menggunakan

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Zhu, Tao, Jian-Guo Zhou, and Jin-Qi Hao. "Experimental Studies on the Changes in Resistivity and Its Anisotropy Using Electrical Resistivity Tomography." International Journal of Geophysics 2012 (2012): 1–10. http://dx.doi.org/10.1155/2012/142069.

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Three measuring lines were arranged on one of free planes of magnetite cuboid samples. Apparent resistivity data were acquired by MIR-2007 resistivity meter when samples were under uniaxial compression of servocontrol YAW-5000F loadingmachine in laboratory. Then we constructed the residual resistivity images using electrical resistivity tomography (ERT) and plotted the diagrams of apparent resistivity anisotropy coefficient (ARAC)λ∗and the included angleαbetween the major axis of apparent resistivity anisotropy ellipse and the axis of load with pressure and effective depth. Our results show th

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Qiao, Zhi, Xi Yang, Jun Liu, and Xinliang Xu. "Ecological Vulnerability Assessment Integrating the Spatial Analysis Technology with Algorithms: A Case of the Wood-Grass Ecotone of Northeast China." Abstract and Applied Analysis 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/207987.

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This study evaluates ecological vulnerability of the wood-grass ecotone of northeast China integrating the spatial analysis technology with algorithms. An assessment model of ecological vulnerability is developed applying the Analytical Hierarchy Process. The composite evaluation index system is established on the basis of the analysis of contemporary status and potential problems in the study area. By the application of the evaluation model, ecological vulnerability index is calculated between 1990 and 2005. The results show that ecological vulnerability was mostly at a medium level in the st

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Dos Santos, Dayane Aparecida, Karen Priscila De Lima, Paulo Henrique Março, and Patrícia Valderrama. "UV spectroscopy and multi-product multivariate calibration in the determination of the total acidity in industrialized juices." Revista Brasileira de Pesquisa em Alimentos 6, no. 1 (2015): 1. http://dx.doi.org/10.14685/rebrapa.v6i1.177.

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<p>The determination of the total acid using UV spectroscopy and multi-product multivariate calibration is presented as an alternative to the conventional method through potentiometric titration. The model was developed including different products (fruit nectar of different flavors and light fruit nectar) where outliers samples were identified and excluded. Partial least squares (PLS) regression was used in order to build the model. Accuracy, represented by the values of the Root Mean Squared Errors of Calibration (RMSEC) and Prediction (RMSEP) were 0.0641 and 0.0534 mg/100 mL, respecti

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Wang, Yan, Ge Chen, Jie Yang, Zhipeng Gui, and Dehua Peng. "A submesoscale eddy identification dataset in the northwest Pacific Ocean derived from GOCI I chlorophyll a data based on deep learning." Earth System Science Data 16, no. 12 (2024): 5737–52. https://doi.org/10.5194/essd-16-5737-2024.

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Abstract. This paper presents a dataset on the identification of submesoscale eddies, derived from high-resolution chlorophyll a data captured by GOCI I in the northwest Pacific Ocean. Our methodology involves a combination of digital image processing, filtering, and object detection techniques, along with a specific chlorophyll a image enhancement procedure to extract essential information about submesoscale eddies. This information includes their time, polarity, geographical coordinates of the eddy center, eddy radius, coordinates of the upper left and lower right corners of the prediction b

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Tian, Erming, Pingping Qu, Caleb K. Stein, Gareth J. Morgan, Bart Barlogie, and Joshua Epstein. "Defining Risk of MGUS and AMM Progression to Myeloma By Ig Heavy-Chain FISH." Blood 124, no. 21 (2014): 3408. http://dx.doi.org/10.1182/blood.v124.21.3408.3408.

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Abstract Interphase FISH analysis using probes for the immunoglobulin heavy chain constant region (IGHC) and variable regions (IGHV) revealed that plasma cells from healthy individuals and from patients with plasma cell (PC) dyscrasias had different patterns of signal-combinations of the two probes. We hypothesized that these patterns indicate diagnostic and prognostic significance. Patients and Methods: Bone marrow specimens from 39 healthy donors, 111 patients with MGUS, 89 patients with AMM, and 96 patients with MM were examined using interphase FISH with probes for IGHC and IGHV simultaneo

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Tian, H. M., W. Z. Chen, C. S. Ma, D. S. Yang, and X. J. Tan. "Energy Release Analysis of a Severe Rockburst in a Headrace Tunnel Crossing a Tectonic Stress Zone." Shock and Vibration 2019 (September 9, 2019): 1–9. http://dx.doi.org/10.1155/2019/8959845.

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When tunneling in a hard and brittle rock mass within a tectonic stress zone, dynamic failure of rock mass-rockburst may occur. Considering the occurrence of rockburst is generally induced by a sudden release of storage elastic energy, a numerical analysis based on the geotechnical conditions of the headrace tunnels of the Neelum–Jhelum hydroelectric project was carried out to investigate the variations of the storage elastic energy of surrounding rock mass during excavation in the tectonic stress zone. As expected, the numerical results show that the storage elastic energy concentration zones

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Jing, Xiaodong, Xusheng Li, Donghui Zhang, Wangjia Liu, Wanchang Zhang, and Zhijie Zhang. "Forecast Zoning of Forest Fire Occurrence: A Case Study in Southern China." Forests 15, no. 2 (2024): 265. http://dx.doi.org/10.3390/f15020265.

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Forest fires in the southern region of China pose significant threats to ecological balance, human safety, and socio-economic stability. Forecast zoning the occurrence of these fires is crucial for timely and effective response measures. This study employs the random forest algorithm and geospatial analysis, including kernel density and standard deviation ellipse methods, to predict forest fire occurrences. Historical fire data analysis reveals noteworthy findings: (i) Decreasing Trend in Forest Fires: The annual forest fire count in the southern region exhibits a decreasing trend from 2001 to

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Lieng, Phatpisey, and Kiattisak Sangpradit. "Study on duck weight estimation by using image processing." E3S Web of Conferences 187 (2020): 02001. http://dx.doi.org/10.1051/e3sconf/202018702001.

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The objective of this research was to process digital image to investigate the possibility of ducks weight estimation based on the software LabVIEW with the vision builder. In this study the images were record by the top-view camera. An ellipse fitting algorithm was applied to localize ducks within the stall. Estimating duck weight consists of these steps. First, image acquisition. Second, counts pixel of the samples. Third calculate duck weight by using samples pixel as the output. Results from this study showed that, the estimated ducks weight by using digital photos had 3.27% of the error w

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Yu, Xiu-Wei, Hao Wang, and Zhong-Wei Wang. "Analysis of yarn fiber volume fraction in textile composites using scanning electron microscopy and X-ray micro-computed tomography." Journal of Reinforced Plastics and Composites 38, no. 5 (2018): 199–210. http://dx.doi.org/10.1177/0731684418811943.

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Variation of yarn fiber volume fraction, induced by the compression between adjacent yarns during the manufacturing process of textile composites, is difficult to be determined by using a single imaging method. A method combining scanning electron microscopy and micro-computed tomography is proposed to quantify the variation of yarn fiber volume fraction of textile composites, which is decomposed into systematic trend and stochastic deviation. The method takes the advantages of high resolution of scanning electron microscopy and wide 3D view of micro-computed tomography. Average fiber cross-se

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Na, Myung Hwan, Wan Hyun Cho, Sang Kyoon Kim, and In Seop Na. "Automatic Weight Prediction System for Korean Cattle Using Bayesian Ridge Algorithm on RGB-D Image." Electronics 11, no. 10 (2022): 1663. http://dx.doi.org/10.3390/electronics11101663.

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Weighting the Hanwoo (Korean cattle) is very important for Korean beef producers when selling the Hanwoo at the right time. Recently, research is being conducted on the automatic prediction of the weight of Hanwoo only through images with the achievement of research using deep learning and image recognition. In this paper, we propose a method for the automatic weight prediction of Hanwoo using the Bayesian ridge algorithm on RGB-D images. The proposed system consists of three parts: segmentation, extraction of features, and estimation of the weight of Korean cattle from a given RGB-D image. Th

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Zhou, Libo, Wenbo Li, Yuexin Han, Yanjun Li, and Dongquan Liu. "Numerical simulation for magnetic field analysis and magnetic adsorption behavior of ellipse magnetic matrices in HGMS: Prediction magnetic adsorption behavior via numerical simulation." Minerals Engineering 167 (June 2021): 106876. http://dx.doi.org/10.1016/j.mineng.2021.106876.

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