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Relevant bibliographies by topics / Numerical Extraction Mechanisms

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Academic literature on the topic 'Numerical Extraction Mechanisms'

Author: Grafiati

Published: 24 May 2025

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Journal articles on the topic "Numerical Extraction Mechanisms"

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Li, Zhao Kun, Hua Mei Bian, Li Juan Shi, and Xiao Tie Niu. "Multiobjective Topology Extraction of the Compliant Mechanisms." Advanced Materials Research 971-973 (June 2014): 1941–48. http://dx.doi.org/10.4028/www.scientific.net/amr.971-973.1941.

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Homogenization or material distribution method based topology optimization will create final topologies in grey level image and saw tooth jump discontinuity boundaries that are not suitable for direct engineering practice, so it is necessary to extract the topological diagram. And a new topology extraction method for compliant mechanisms is presented. In the fist stage, the grey image is transferred into the black-and white finite element topology optimization results. The threshold value meeting to objective function is obtained so that each element is either empty or solid; in the second sta

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EMOTO, Kazuma, Toshiyuki TSUCHIYA, and Yoshinori TAKAO. "Numerical Investigation of Steady and Transient Ion Beam Extraction Mechanisms for Electrospray Thrusters." TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 16, no. 2 (2018): 110–15. http://dx.doi.org/10.2322/tastj.16.110.

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Yang, Junyu, Qianghui Xu, Xuan Kou, et al. "Three-dimensional pore-scale study of methane hydrate dissociation mechanisms based on micro-CT images." Innovation Energy 1, no. 1 (2024): 100015. http://dx.doi.org/10.59717/j.xinn-energy.2024.100015.

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<p>Methane hydrate is a promising source of alternative energy. An in-depth understanding of the hydrate dissociation mechanism is crucial for the efficient extraction. In the present work, a comprehensive set of pore-scale numerical studies of hydrate dissociation mechanisms is presented. Pore-scale lattice Boltzmann (LB) models are proposed to simulate the multiphysics process during methane hydrate dissociation. The numerical simulations employ the actual hydrate sediment pore structure obtained by the micro-CT imaging. Experimental results of xenon hydrate dissociation are compared w

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Tomaszewska, Anna. "The Influence of Molar Extraction in Mandible on the Bone Remodeling Process under Different Chewing Conditions." Acta Mechanica et Automatica 19, no. 1 (2025): 148–52. https://doi.org/10.2478/ama-2025-0017.

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Abstract The aim of this study is to analyze the process of remodeling the mandibular bone in the context of functional adaptation after tooth extraction. The mandible, as a bone structure, undergoes continuous remodeling, allowing it to adapt to changing mechanical conditions. After tooth loss, significant changes occur in the distribution of loading, which can lead to bone resorption in areas with reduced mechanical stimulation and to excessive loading of the remaining teeth. The study utilizes a geometric model of the mandible, taking into account different chewing conditions before and aft

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Nguyen Dang Binh, Thanh, Dung Nguyen Trung, and Duc Hong Ta. "MODELING OF ESSENTIAL OIL EXTRACTION PROCESS: APPLICATION FOR ORANGE, POMELO, AND LEMONGRASS." Vietnam Journal of Science and Technology 56, no. 4A (2018): 182. http://dx.doi.org/10.15625/2525-2518/56/4a/12811.

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ABSTRACT - HCTN - 44In this study, the kinetic models of steam distillation of orange (Citrus Sinensis (L.) Osbeck), pomelo (Citrus grandis L.), and lemongrass (Cymbopogon Citratus) for the recovery of essential oils were developed. The model parameters were estimated based on experimental data and comprehensive kinetic mechanisms of the solid-liquid extraction process. Numerical results showed that, the extraction mechanism of the three materials were best fit to the Patricelli two-stage model in which the diffusion of the oil was followed by the washing step. Moreover, the model parameters o

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Yang, Lei, Haonan Guo, Yu Dai, and Wanheng Chen. "A Method for Complex Question-Answering over Knowledge Graph." Applied Sciences 13, no. 8 (2023): 5055. http://dx.doi.org/10.3390/app13085055.

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Knowledge Graph Question-Answering (KGQA) has gained popularity as an effective approach for information retrieval systems. However, answering complex questions involving multiple topic entities and multi-hop relations presents a significant challenge for model training. Moreover, existing KGQA models face difficulties in extracting constraint information from complex questions, leading to reduced accuracy. To overcome these challenges, we propose a three-part pipelined framework comprising question decomposition, constraint extraction, and question reasoning. Our approach employs a novel ques

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Ban, Marko, and Neven Duic. "Adaptation of n-heptane autoignition tabulation for complex chemistry mechanisms." Thermal Science 15, no. 1 (2011): 135–44. http://dx.doi.org/10.2298/tsci100514077b.

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The adaptation of auto-ignition tabulation for effective use of complex chemical mechanisms will be presented in this paper. Taking cool flame ignition phenomenon into account could improve numerical simulations of combustion in compression ignition engines. Current approaches of successful simulation of this phenomenon are based on the extraction of ignition delay times, heat releases and also reaction rates from tabulated data dependant on four parameters: temperature, pressure, equivalence ratio and exhaust gasses mass fraction. The methods described here were used to create lookup tables i

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Ilic, Bojana, and Magdalena Djordjevic. "Understanding mass hierarchy in different energy loss mechanisms through heavy flavor data." EPJ Web of Conferences 276 (2023): 02017. http://dx.doi.org/10.1051/epjconf/202327602017.

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The theoretical analysis of experimental observations, such as the mass hierarchy effect, often neglects some ingredients, which may have a significant impact. The forthcoming measurements at RHIC and LHC will generate heavy flavor data with unprecedented precision, providing an opportunity to utilize high-p⊥ heavy flavor data to analyze the interaction mechanisms in QGP. To this end, we use our recently developed DREENA framework based on the dynamical energy loss formalism. We present: i) How to disentangle the signature of different interaction mechanisms (radiative and collisional energy l

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He, Siyuan, Fan Zhang, Weidong Hu, Lei Zhuang, Xingbin Ye, and Guoqiang Zhu. "Investigation of Range Profiles from a Simplified Ship on Rough Sea Surface and Its Multipath Imaging Mechanisms." International Journal of Antennas and Propagation 2012 (2012): 1–6. http://dx.doi.org/10.1155/2012/894198.

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The range profiles of a two-dimension (2 D) perfect electric conductor (PEC) ship on a wind-driven rough sea surface are derived by performing an inverse discrete Fourier transform (IDFT) on the wide band backscattered field. The rough sea surface is assuming to be a PEC surface. The back scattered field is computed based on EM numerical simulation when the frequencies are sampled between 100 MHz and 700 MHz. Considering the strong coupling interactions between the ship and sea, the complicated multipath effect to the range profile characteristics is fully analyzed based on the multipath imagi

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Qiao, Yu, Jie Zhang, Qiangqiang He, et al. "Truthful Profit Maximization Mechanisms for Mobile Crowdsourcing." Wireless Communications and Mobile Computing 2022 (January 22, 2022): 1–13. http://dx.doi.org/10.1155/2022/8859905.

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Crowdsourcing is an effective tool to allocate tasks among workers to obtain a cumulative outcome. Algorithmic game theory is widely used as a powerful tool to ensure the service quality of a crowdsourcing campaign. By this paper, we consider a more general optimization objective for the budget-free crowdsourcer, profit maximization, where profit is defined as the difference between the benefit obtained by crowdsourcer and payments to workers. Based on the framework of random sampling and profit extraction, we proposed a strategy-proof profit-oriented mechanism for our problem, which also sati

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Dissertations / Theses on the topic "Numerical Extraction Mechanisms"

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Chapalain, Thomas. "Investigating the representation of numerosity in humans and convolutional neural networks using high-variability photorealistic stimuli." Electronic Thesis or Diss., université Paris-Saclay, 2025. http://www.theses.fr/2025UPASG020.

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La capacité à estimer rapidement le nombre d'éléments dans une scène sans compter explicitement a fait l'objet de nombreuses recherches.Les études expérimentales et les modèles computationnels ont cherché à révéler les mécanismes permettant au cerveau humain de percevoir la numérosité d'un seul coup d'œil. Les récentes avancées en imagerie, incluant l'IRM fonctionnelle, l'analyse multivariée et la modélisation du champ récepteur des neurones, ont permis d'en apprendre davantage sur la manière dont l'information numérique est encodée dans le cerveau. En particulier, ces travaux ont mis en lumiè

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Bylin, Johan. "Best practice of extracting magnetocaloric properties in magnetic simulations." Thesis, Uppsala universitet, Materialteori, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-388356.

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In this thesis, a numerical study of simulating and computing the magnetocaloric properties of magnetic materials is presented. The main objective was to deduce the optimal procedure to obtain the isothermal change in entropy of magnetic systems, by evaluating two different formulas of entropy extraction, one relying on the magnetization of the material and the other on the magnet's heat capacity. The magnetic systems were simulated using two different Monte Carlo algorithms, the Metropolis and Wang-Landau procedures. The two entropy methods proved to be comparably similar to one another. Both

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Book chapters on the topic "Numerical Extraction Mechanisms"

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Schulz, H., C. Schwab, and W. L. Wendland. "An Extraction Technique for Boundary Element Methods." In Notes on Numerical Fluid Mechanics (NNFM). Vieweg+Teubner Verlag, 1996. http://dx.doi.org/10.1007/978-3-322-89941-5_18.

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Baysal, Kudret, Tobias Schafhitzel, Thomas Ertl, and Ulrich Rist. "Extraction and Visualization of Flow Features." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-01106-1_30.

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Shen, Lawrence K., and An-Nan Chien. "Numerical Solution and Extraction of Design Parameter Curves for a Nonlinear Dynamic System." In Computational Mechanics ’88. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-61381-4_310.

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Chemnitz, Alexander, and Thomas Sattelmayer. "Calculation of the Thermoacoustic Stability of a Main Stage Thrust Chamber Demonstrator." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_15.

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Abstract The stability behavior of a virtual thrust chamber demonstrator with low injection pressure loss is studied numerically. The approach relies on an eigenvalue analysis of the Linearized Euler Equations. An updated form of the stability prediction procedure is outlined, addressing mean flow and flame response calculations. The acoustics of the isolated oxidizer dome are discussed as well as the complete system incorporating dome and combustion chamber. The coupling between both components is realized via a scattering matrix representing the injectors. A flame transfer function is applied to determine the damping rates. Thereby it is found that the procedure for the extraction of the flame transfer function from the CFD solution has a significant impact on the stability predictions.

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Lacroix, Zoé, Arnaud Sahuguet, and Raman Chandrasekar. "Information extraction and database techniques: A user-oriented approach to querying the web." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 1998. http://dx.doi.org/10.1007/bfb0054231.

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Send, Wolfgang. "Stroke-Wing Engine with Dual Wings for Extracting Power from an Airstream." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-27279-5_77.

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Schollenberger, Michael, and Thorsten Lutz. "Comparison of Different Methods for the Extraction of Airfoil Characteristics of Propeller Blades as Input for Propeller Models in CFD." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-79561-0_3.

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Carrigan, Tobias D., and James P. Talbot. "Extracting Information from Axle-Box Acceleration: On the Derivation of Rail Roughness Spectra in the Presence of Wheel Roughness." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-70289-2_29.

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Solazzi, Luigi, and Nicola Pellegrini. "Design and Numerical Study of a 2-DoF Mechanism for Efficient Wave Energy Extraction in Onshore Application." In Proceedings of I4SDG Workshop 2021. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87383-7_1.

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Xie Shejuan, Tian Mingming, Pei Cuixiang, Chen Hong-En, Chen Zhenmao, and Takagi Toshiyuki. "Composite Defects Evaluation Using the Hybrid NDT Methods of PECT and EMAT." In Studies in Applied Electromagnetics and Mechanics. IOS Press, 2017. https://doi.org/10.3233/978-1-61499-767-2-139.

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In this paper, a hybrid nondestructive testing (NDT) method combined with the pulsed eddy current testing (PECT) method and the electromagnetic acoustic transducer (EMAT) method has been proposed and validated through numerical simulations and experiments. First, a numerical code is developed for the simulation of hybrid EMAT/PECT signals. Second, based on the numerical simulation, the influences of the eddy current induced by the excitation coil and the eddy current due to the velocity effect of the ultrasonic wave are compared and analyzed. Third, several signal separation and extraction methods are proposed on the basis of the spectral analysis and filtering strategies. Finally, hybrid EMAT/PECT experiments are conducted. Based on the numerical and experimental results, the proposed hybrid PECT/EMAT NDT method is demonstrated both high detectability and high efficiency.

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Conference papers on the topic "Numerical Extraction Mechanisms"

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Bataee, M., M. C. Chai, Z. Bennour, R. Carter, Z. Hamdi, and A. M. Hassan. "CO2-Driven Geothermal Energy Extraction in the Baram Basin, Sarawak: Insights from Numerical Reservoir Simulations." In SPE Conference at Oman Petroleum & Energy Show. SPE, 2024. http://dx.doi.org/10.2118/218756-ms.

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Abstract This progress report focuses on the potential for geothermal energy extraction in Malaysia, particularly in the Sabah and Sarawak sedimentary basins. Despite the region's rich deep reservoirs, development in this area has been limited. Our study emphasizes the extraction of geothermal energy from the Sarawak Basin's geothermal reservoirs through CO2 injection. We primarily investigate sandstone formations, analyzing their properties and the feasibility of hot water extraction using CO2. The report provides a theoretical framework to understand the primary recovery mechanisms for fluid

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Piya, Cecil, Indraneel Sircar, James D. Van de Ven, and David J. Olinger. "Numerical Modeling of Liquid Piston Gas Compression." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10621.

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Prior research has shown that the use of liquid-pistons in place of conventional solid pistons within gas compression technologies can significantly improve the efficiency of gas compression. The liquid-piston provides the prospect for a consistent and high rate of heat extraction from the compressed gas during system operation. Consequently, the input power requirements during each individual compression are lowered. To validate this concept, analytical studies of the thermal-fluids and heat transfer mechanisms during gas compression were performed. The analysis involved the development of a

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Eremin, M. O., A. Yu Peryshkin, L. D. Pavlova, and V. N. Fryanov. "Numerical assessment of the stability of security pillars during the development of adjacent extraction columns of an inclined seam." In Physical Mesomechanics of Materials. Physical Principles of Multi-Layer Structure Forming and Mechanisms of Non-Linear Behavior. Novosibirsk State University, 2022. http://dx.doi.org/10.25205/978-5-4437-1353-3-173.

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Masud, Nahian, and Chris Qin. "Numerical Study on Semi-Active Flapping Hydrofoils for Energy Extraction Using Overset Mesh." In ASME 2024 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2024. https://doi.org/10.1115/imece2024-147330.

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Abstract The exploitation of flapping hydrofoils presents a promising avenue for harnessing hydrokinetic energy in riverine and tidal environments. Unlike traditional rotational mechanisms, flapping hydrokinetic devices offer several advantages, including simpler foil geometries, reduced structural demands, improved hydrodynamic performance, suitability for shallow waters, and lower impacts on aquatic ecosystems. While previous numerical studies have mainly focused on hydrofoils with fully prescribed motions, this research introduces a semi-active strategy that allows the heaving motion of a N

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Esmaeili, Sajjad, Seyed Emad Siadatifar, Mohammad Mesbah, Brij Maini, and Apostolos Kantzas. "Experimental and Numerical Study of Asphaltene Deposition and Precipitation in the Vapor Extraction Process." In SPE Canadian Energy Technology Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/212769-ms.

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Abstract Vapor Extraction (VAPEX) is one of the most promising solvent-based methods to tackle the issues associated with SAGD. Asphaltene precipitation due to solvent injection and its in-situ upgrading plays an essential role in VAPEX. As the VAPEX chamber expands laterally and vertically, the speed of the front movement and the angle of the chamber boundary varies. This research investigates the rate of asphaltene precipitation and deposition in VAPEX using different solvents. In this research, three VAPEX experiments are carried out in a physical model using bitumen and three solvents (pro

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Jian, Wu, Zhou Libo, Jiang Yao, et al. "Experimental and Numerical Investigation on Fracture Propagation Sensitivity Parameters in Deep Coal Seams." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0917.

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ABSTRACT: Hydraulic fracturing is the primary method for increasing hydrocarbon production in the extraction of deep coal bed methane. Understanding the initiation and propagation mechanisms of hydraulic fractures in deep coal seams, as well as developing design principles for hydraulic fracturing operations, can improve the efficiency of such operations. This study aims to identify the key factors affecting hydraulic fracture initiation and propagation in deep coal seams through indoor experiments and numerical simulations of deep coal seam wells. The study conducted an indoor experiment on h

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Su, Wei, Zhiliang Wang, Miao Li, and Linfang Shen. "The Coupling Mechanisms of Seepage and Heat Transfer in Rock Fractures in Enhanced Geothermal Systems Based on the Lattice Boltzmann Method." In ASME 2024 43rd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/omae2024-130931.

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Abstract The coupling mechanism of seepage and heat transfer in high-temperature rock fractures controls the heat extraction ability of enhanced geothermal systems. Utilising the lattice Boltzmann method, a numerical model is proposed to capture this coupling, accounting for fluid temperature’s influence on kinematic viscosity and thermal diffusion coefficient in rough fractures. The model’s validity is confirmed through a classic example. The effect of rough fracture surface on the coupling mechanism of seepage and heat transfer was analysed. The relationship between the roughness of the frac

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Moreira, Debora C., Gherhardt Ribatski, and Satish G. Kandlikar. "Review of Enhancement Techniques With Vapor Extraction During Flow Boiling in Microchannels." In ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/icnmm2020-1068.

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Abstract Flow boiling heat transfer in microchannels can remove high heat loads from restricted spaces with high heat transfer coefficients and minimum temperature gradients. However, many works still report problems with instabilities, high pressure drop and early critical heat flux, which hinder its possible applications as thermal management solutions. Much comprehension on the phenomena concerning flow boiling heat transfer is still missing, therefore many investigations rely on empirical methods and parametric studies to develop novel configurations of more efficient heat sinks. Neverthel

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Liu, Rui, Xuelin Dong, and Deli Gao. "Numerical Simulation of Enhancing Coalbed Methane Recovery by RF Heating with Small Spacing Well Pattern." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0087.

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ABSTRACT: In recent years, electromagnetic (EM) heating excitation technology has been widely concerned in the exploitation of Coalbed methane (CBM). However, the heating volume of a single antenna in a vertical well is limited and cannot meet the needs of large-scale development. From the perspective of multi-well and multi-antenna, this paper establishes a mathematical model of radio frequency (RF) heating coupled with EM field and temperature field of small-spacing well pattern, comprehensively analyzes the average temperature and heating efficiency of coal seam heated by RF, reveals the in

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Dang, Yike, Zheng Yang, Shangtong Yang, and Junlong Shang. "Thermal Damage in Crystalline Rocks: The Role of Heterogeneity in Mechanical Performance and Fracture Mechanisms." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0106.

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ABSTRACT: Investigating thermally treated rocks' mechanical properties and failure processes is crucial for advancing geothermal energy storage and extraction technologies. Naturally occurring rocks typically exhibit inherent flaws and fractures. Nevertheless, existing studies on the impact of thermal treatment on rock damage predominantly utilize intact rock specimens, either through numerical simulations or experimental approaches. This research introduces the Grain-Based model (GBM) to represent the complex shapes of mineral grains accurately and incorporates the heterogeneity of grain size

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