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Thematische Bibliographien / Simulation à base de processus / Zeitschriftenartikel

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Zeitschriftenartikel zum Thema „Simulation à base de processus“

Autor: Grafiati

Veröffentlicht am 25. Mai 2024

Zuletzt aktualisiert am 31. Juli 2025

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1

Curie, Florence, Annabelle Mas, Julien Perret, Anne Puissant, and Anne Ruas. "Simulation d’un processus de densification du tissu urbain à base d’agents." Revue internationale de géomatique 21, no. 4 (2011): 489–511. http://dx.doi.org/10.3166/rig.15.489-511.

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Lebl, Aleksandar, Dragan Mitić, and Žarko Markov. "A role of Excel program in telecommunication processes simulation." Scientific Technical Review 73, no. 1 (2023): 13–17. http://dx.doi.org/10.5937/str2301013l.

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This paper presents the simulation of mobile telephony systems realized in Excel program. Although primarily intended for other applications, Excel has several advantages over other specialized programs for simulation purposes. Excel application for simulation is illustrated by several examples from already published papers with the main goal to describe the most important part of realized simulations that allows determination of all important characteristics of telecommunication traffic process. Beside traffic process, the Excel application allows a reliable simulation of base station emissio

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3

Charness, Neil. "Psychological Models of Aging: How, Who, and What? A Comment." Canadian Journal on Aging / La Revue canadienne du vieillissement 14, no. 1 (1995): 67–73. http://dx.doi.org/10.1017/s0714980800010503.

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RÉSUMÉSchroots soulève d'importantes questions ayant trait au processus du vieillissement, notamment «De quelle façon devrions-nous étudier le processus du vieillissement?», «Quelles personnes devrions-nous étudier?», et «Quel est le meilleur moyen d'établir les modèles de changement?». J'aborde ces questions en utilisant des analogies dans leur sens large, comme «gérodynamique» et entropie, et je défends une stratégie qui détermine des phénomènes de base pour fournir une explication et utilise la simulation par ordinateur pour modeler ces phénomènes.

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Baillères, Henri. "Liaison entre sylviculture et qualité du bois. A travers la modélisation et les logiciels de simulation." BOIS & FORETS DES TROPIQUES 251 (March 1, 1997): 69–70. https://doi.org/10.19182/bft1997.251.a19934.

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La recherche sur les bois donne aux industriels le moyen d'améliorer la qualité, la durabilité et les performances des produits en bois et à base de bois. Ce second atelier de l’IUFRO, tenu au Kruger National Park (Afrique du Sud), du 26 au 31 août 1996, a permis des échanges entre chercheurs et industriels. Son programme portait sur : formation et qualité du bois, qualification des matériaux, procédés industriels d'élaboration, de conditionnement en amélioration, processus de transformation en optimisation de la production, innovation et développement de la construction.

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Lemogne, C. "L’imagerie cérébrale fonctionnelle : un outil au service de la psychopathologie ?" European Psychiatry 30, S2 (2015): S3—S4. http://dx.doi.org/10.1016/j.eurpsy.2015.09.021.

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La psychopathologie est précieuse pour guider l’application de l’imagerie cérébrale fonctionnelle à l’étude des troubles mentaux. En permettant une approche basée sur les processus mentaux plutôt que sur des catégories diagnostiques (par ex. rumination plutôt que dépression), elle offre l’opportunité d’identifier des biomarqueurs susceptibles d’enrichir la nosographie psychiatrique et de renseigner les stratégies diagnostiques et thérapeutiques. En revanche, savoir si l’imagerie cérébrale fonctionnelle peut être un outil au service de la psychopathologie, c’est-à-dire de la compréhension des p

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Lin, Tzu-Shun, and Fang-Yi Cheng. "Impact of Soil Moisture Initialization and Soil Texture on Simulated Land–Atmosphere Interaction in Taiwan." Journal of Hydrometeorology 17, no. 5 (2016): 1337–55. http://dx.doi.org/10.1175/jhm-d-15-0024.1.

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Abstract This study investigates the effect of soil moisture initializations and soil texture on the land surface hydrologic processes and its feedback on atmospheric fields in Taiwan. The simulations using the Weather Research and Forecasting (WRF) Model with the Noah land surface model were conducted for a 1-month period from 10 August to 12 September 2013 that included two typhoon-induced precipitation episodes and a series of clear-sky days. Soil moisture from the Global Land Data Assimilation System (GLDAS) was utilized to provide the soil moisture initialization process. In addition, upd

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Bursi, Fabio, Andrea Ferrara, Andrea Grassi, and Chiara Ronzoni. "Simulating Continuous Time Production Flows in Food Industry by Means of Discrete Event Simulation." International Journal of Food Engineering 11, no. 1 (2015): 139–50. http://dx.doi.org/10.1515/ijfe-2014-0002.

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Abstract The paper presents a new framework for carrying out simulations of continuous-time stochastic processes by exploiting a discrete event approach. The application scope of this work mainly refers to industrial production processes executed on a continuous flow of material (e.g. food and beverage industry) as well as production processes working on discrete units but characterized by a high speed flow (e.g. automated packaging lines). The proposed model, developed adopting the Discrete EVent system Specification (DEVS) formalism, defines a single generalized base unit able to represent,

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Iatcheva, Ilona, Denitsa Darzhanova, and Nikolina Petkova. "Electric field in a conductive medium – modelling and application." IOP Conference Series: Materials Science and Engineering 1317, no. 1 (2024): 012008. http://dx.doi.org/10.1088/1757-899x/1317/1/012008.

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Abstract The paper presents some specific features of an electric field in a conductive medium, a theoretical base for numerical field modelling using the finite element method and its application in simulation of the processes in real electromagnetic systems. Application examples are presented, concerning simulations of the processes, taking part in contact resistance welding and insulation in the presence of conductive inclusions.

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Barton, G., X. Li, and Gerhard Hirt. "Finite-Element Modeling of Multi-Pass Forging of Nickel-Base Alloys Using a Multi-Mesh Method." Materials Science Forum 539-543 (March 2007): 2503–8. http://dx.doi.org/10.4028/www.scientific.net/msf.539-543.2503.

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Nickel-base alloys are mostly used for high-temperature applications, many of which are heavily loaded safety components. The material properties highly depend on the microstructure, which, in turn, depends on the metal forming process and the heat treatment. FEM integrated microstructure models can satisfactorily describe the grain size development due to dynamic and static recrystallisation during a metal forming processes and the heat treatment. The simulation results obtained from modeled compression experiments are very promising so that consequently, simulations of more sophisticated pro

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Thews, O. "Simulation Analysis of the Influence of Hemodialysis Control Parameters on Exchange Processes during Therapy." International Journal of Artificial Organs 15, no. 4 (1992): 213–21. http://dx.doi.org/10.1177/039139889201500405.

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The effect of dialysis control parameters (dialysate composition, ultrafiltration rate, blood flow rate) on the patient's internal milieu were studied using a mathematical model for the description of the dynamic exchange processes during hemodialysis. This model simulates the electrolyte and water distribution, the acid-base and the oxygenation state as well as the ventilation. The dialysate sodium concentration affects mainly the intra-/ extracellular water and the potassium distribution. The dialysate bicarbonate and acetate concentrations control the acid-base state and the electrolyte dis

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Morrow, Jarrett D., and Brandon W. Higgs. "CallSim: Evaluation of Base Calls Using Sequencing Simulation." ISRN Bioinformatics 2012 (December 12, 2012): 1–10. http://dx.doi.org/10.5402/2012/371718.

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Accurate base calls generated from sequencing data are required for downstream biological interpretation, particularly in the case of rare variants. CallSim is a software application that provides evidence for the validity of base calls believed to be sequencing errors and it is applicable to Ion Torrent and 454 data. The algorithm processes a single read using a Monte Carlo approach to sequencing simulation, not dependent upon information from any other read in the data set. Three examples from general read correction, as well as from error-or-variant classification, demonstrate its effective

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Anglada, Eva, Antton Meléndez, Laura Maestro, and Ignacio Domínguez. "Finite Element Model Correlation of an Investment Casting Process." Materials Science Forum 797 (June 2014): 105–10. http://dx.doi.org/10.4028/www.scientific.net/msf.797.105.

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The achievement of reliable simulations, in the case of complex processes as is the investment casting, is not a trivial task. Their accuracy is significantly related with the knowledge of the material properties and boundary conditions involved, but the estimation of these values usually is highly complex. One helpful option to try to avoid these difficulties is the use of inverse modelling techniques, where experimental temperature measurements are used as base to correlate the simulation models. The research presented hereafter corresponds to the correlation of a finite element model of the

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Zarin-Nejadan, Milad. "Fiscalité, q de Tobin et investissement privé en Suisse." Recherches économiques de Louvain 58, no. 2 (1992): 213–35. http://dx.doi.org/10.1017/s0770451800083688.

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RésuméCette contribution a pour objet d’élaborer un modèle mettant en relation la variable q de Tobin corrigée pour la fiscalité avec le taux d’accumulation du capital dans le but d’évaluer l’effet de l’incitation fiscale sur l’investissement privé en Suisse. L’estimation du modèle sur la base des données portant sur la période d’après-guerre révèle le rô1e mineur joué par la fiscalité dans le processus d’investissement en Suisse. Par ailleurs, d’après les rèsultats de la simulation du modèle sous divers scénarios de réforme fiscale, les instruments fiscaux employés en Suisse, à savoir la mani

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Syuzev, V. V., E. V. Smirnova, and A. V. Proletarsky. "Algorithms of multidimensional random process simulation." Computer Optics 45, no. 4 (2021): 627–37. http://dx.doi.org/10.18287/2412-6179-co-770.

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The article discusses two approaches to modeling signals and processes: the method of filter construction and the trigonometric method. It is shown that the later approach is more promising, since an increase in the signal/process representation dimension mathematically means adding a term to the basis function formula, which gives access to fast simulation algorithms. Examples of algorithms for multidimensional simulation of random processes using two methods are given and a software system that implements these algorithms is described. The results provided by the software system will allow y

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Moskalev, Dmitrii, Andrei Kozlov, Uliana Salgaeva, Victor Krishtop, and Anatolii Volyntsev. "Applicability of the Effective Index Method for the Simulation of X-Cut LiNbO3 Waveguides." Applied Sciences 13, no. 11 (2023): 6374. http://dx.doi.org/10.3390/app13116374.

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Photonic integrated circuits (PIC) find applications in the fields of microwaves, telecoms and sensing. Generally, PICs are fabricated on a base of isotropic materials such as SOI, Si3N4, etc. However, for some applications, anisotropic substrates such as LiNbO3 are used. A thin film of LiNbO3 on an insulator (LNOI) is a promising material platform for complex high-speed PICs. The design and simulation of PICs on anisotropic materials should be performed using rigorous numerical methods based on Maxwell’s equations. These methods are characterized by long calculation times for one simulation i

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Makhmanazarov, Ramdas, Ilya Tseplyaev, Sergey Shipilov, and Natalya Krivova. "Estimation of SAR Average in Rats during 5G NR Chronic Exposure." Applied Sciences 14, no. 1 (2023): 208. http://dx.doi.org/10.3390/app14010208.

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To study physiological reactions in the brain and skin of higher mammals exposed to chronic radiofrequency radiation, specific absorption ratio (SAR) determination is required and time-consuming numerical methods are used. The paper deals with the estimation of the whole-body specific absorption rate (SAR) in rats chronically exposed to external electromagnetic fields, as well as the development of a laboratory setup simulating the operation of a fifth-generation 5G New Radio base station (with a signal bandwidth of 15 MHz and a carrier frequency of 2.4 GHz). The paper presents a modified meth

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Breit, M., B. Pfeifer, C. Baumgartner, R. Modre-Osprian, B. Tilg, and M. Visvanathan. "Systematic Analysis of Signaling Pathways Using an Integrative Environment." Methods of Information in Medicine 46, no. 03 (2007): 386–91. http://dx.doi.org/10.1160/me0399.

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Summary Introduction: Understanding the biological processes of signaling pathways as a whole system requires an integrative software environment that has comprehensive capabilities. The environment should include tools for pathway design, visualization, simulation and a knowledge base concerning signaling pathways as one. In this paper we introduce a new integrative environment for the systematic analysis of signaling pathways. Methods: This system includes environments for pathway design, visualization, simulation and a knowledge base that combines biological and modeling information concern

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Khudayarov, B. A., KH M. Komilova, and F. ZH Turaev. "Numerical Simulation of Vibration of Composite Pipelines Conveying Pulsating Fluid." International Journal of Applied Mechanics 11, no. 09 (2019): 1950090. http://dx.doi.org/10.1142/s175882511950090x.

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Vibration problems of pipelines made of composite materials conveying pulsating flow of gas and fluid are investigated in the paper. A dynamic model of motion of pipelines conveying pulsating fluid flow supported by a Hetenyi’s base is developed taking into account the viscosity properties of the structure material, axial forces, internal pressure and Winkler’s viscoelastic base. To describe the processes of viscoelastic material strain, the Boltzmann–Volterra integral model with weakly singular hereditary kernels is used. Using the Bubnov–Galerkin method, the problem is reduced to the study o

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Kloppenborg, Thomas, Marco Schikorra, Michael Schomäcker, and A. Erman Tekkaya. "Numerical Optimization of Bearing Length in Composite Extrusion Processes." Key Engineering Materials 367 (February 2008): 47–54. http://dx.doi.org/10.4028/www.scientific.net/kem.367.47.

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The decrease of the bearing length in extrusion processes results in increasing of the material flow and offers, through this, the possibility for manipulation and optimization. This paper presents a simulation based optimization technique which uses this effect for optimizing the material flow in direct extrusion processes. Firstly, the method is used in a multi-extrusion process with equal pitch circle profiles, then in an extrusion process of an asymmetric profile. Furthermore, a composite extrusion process is analyzed where endless wires of high strength steel are embedded in a base materi

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Bindu, M. D., P. S. Tide, and A. B. Bhasi. "Numerical Studies on Temperature and Material Flow During Friction Stir Welding using Different Tool Pin Profiles." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 83, no. 1 (2021): 91–104. http://dx.doi.org/10.37934/arfmts.83.1.91104.

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A three dimensional computational fluid dynamics (CFD) model has been developed to study the effect of tool pin profile on the material flow and temperature development in friction stir welding (FSW) of high specific strength AA 7068 alloy. Numerical simulations were carried out using a RNG k-e turbulence model. Three tool pin profiles, viz. cylindrical, conical and straight cylindrical threaded were considered for the simulation. The temperature distribution and material flow pattern obtained from the simulation were compared for different pin profiles. Simulation results predicted Temperatur

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Fortin, J. P., R. Moussa, C. Bocquillon, and J. P. Villeneuve. "Hydrotel, un modèle hydrologique distribué pouvant bénéficier des données fournies par la télédétection et les systèmes d'information géographique." Revue des sciences de l'eau 8, no. 1 (2005): 97–124. http://dx.doi.org/10.7202/705215ar.

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Les processus hydrologiques variant dans l'espace et dans le temps en fonction de la variabilité spatio-temporelle des entrées météorologiques et de l'occupation du sol ainsi que de la variabilité spatiale de la topographie et de la nature du terrain, un modèle conçu pour bénéficier des données provenant de la télédétection et des SIG a été développé. Les principaux objectifs poursuivis étaient: l'application au plus grand nombre de bassins possible, une sélection d'algorithmes permettant de tenir compte des données disponibles, un minimum d'étalonnage, la facilité de transfert d'un bassin à l

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Verdete, Bogdan Marian, Corneliu Rontescu, and Tudor George Alexandru. "Capturing the temperature gradients of GMAW hardfacing processes by employing CFD and FEM simulation procedures." MATEC Web of Conferences 373 (2022): 00065. http://dx.doi.org/10.1051/matecconf/202237300065.

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Hardfacing is carried out whenever a local improvement of the mechanical properties of metallic parts is demanded. In this regard, gas metal arc welding technology is one of the most popular choices. One decisive factor of the welded joint quality is governed by the heat affected zone. The present paper proposes a simulation methodology that can be employed for capturing the temperature gradients in any location of the base metal, when such information is required. The model was developed by using ANSYS Workbench simulation software and is based on coupled CFD and Transient Thermal analysis. I

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Caldwell, Peter, and Christopher S. Bretherton. "Large Eddy Simulation of the Diurnal Cycle in Southeast Pacific Stratocumulus." Journal of the Atmospheric Sciences 66, no. 2 (2009): 432–49. http://dx.doi.org/10.1175/2008jas2785.1.

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Abstract This paper describes a series of 6-day large eddy simulations of a deep, sometimes drizzling stratocumulus-topped boundary layer based on forcings from the East Pacific Investigation of Climate (EPIC) 2001 field campaign. The base simulation was found to reproduce the observed mean boundary layer properties quite well. The diurnal cycle of liquid water path was also well captured, although good agreement appears to result partially from compensating errors in the diurnal cycles of cloud base and cloud top due to overentrainment around midday. At all times of the day, entrainment is fo

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Mazal, Jan, Jan Zezula, Josef Procházka, and Dalibor Procházka. "The use of modeling and simulation in the development process optimization of the Armed Forces of the Czech Republic." Vojenské rozhledy 31, no. 4 (2022): 140–58. http://dx.doi.org/10.3849/2336-2995.31.2022.04.140-158.

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The article contributes to a more efficient use of the theoretical, technological and application base, especially to the improvement of decision-making processes at the strategic level. It offers a methodological framework for solving the armed forces capability optimization problem by implementing modeling, simulation and operations research tools and theories.

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TALAMUCCI, F. "FREEZING PROCESSES IN SATURATED SOILS." Mathematical Models and Methods in Applied Sciences 08, no. 01 (1998): 107–38. http://dx.doi.org/10.1142/s0218202598000068.

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When a soil saturated with water is subject to freezing, a volume expansion can generally be observed. The increase in volume is due not only to the different densities of water and ice, but mainly to a water migration process that is transported from the base of the soil up to an intermediate region where the change of phase occurs. It is generally accepted that a transition region, called frozen fringe, where ice and water coexist in the porous space, separates the unfrozen from the frozen part of the soil. Immediately over the frozen fringe a pure segregated layer of ice (ice lens) can form

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Zhang, Zekun, Yong Peng, Miao Zhang, Quanjun Yin, and Qun Li. "An Approach for Deployment of Service-Oriented Simulation Run-Time Resources." Applied Sciences 13, no. 20 (2023): 11341. http://dx.doi.org/10.3390/app132011341.

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The requirements for low latency and high stability in large-scale geo-distributed training simulations have made cloud-edge collaborative simulation an emerging trend. However, there is currently limited research on how to deploy simulation run-time resources (SRR), including edge servers, simulation services, and simulation members. On one hand, the deployment schemes of these resources are coupled and have mutual impacts. It is difficult to ensure overall optimum by deploying these resources separately. On the other hand, the pursuit of low latency and high system stability is often challen

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Sweeder, Ryan D., Deborah G. Herrington, and Jessica R. VandenPlas. "Supporting students’ conceptual understanding of kinetics using screencasts and simulations outside of the classroom." Chemistry Education Research and Practice 20, no. 4 (2019): 685–98. http://dx.doi.org/10.1039/c9rp00008a.

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Simulations have changed chemistry education by allowing students to visualize the motion and interaction of particles underlying important chemical processes. With kinetics, such visualizations can illustrate how particles interact to yield successful reactions and how changes in concentration and temperature impact the number and success of individual collisions. This study examined how a simulation exploring particle collisions, or screencast employing the same simulation, used as an out-of-class introduction helped develop students’ conceptual understanding of kinetics. Students either man

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Zeng, Zhiping, Ji Hu, Xudong Huang, et al. "Research on Fatigue Damage Evolution of the Base Plate Structure of China Railway Track System III Type Slab Ballastless Track under Heavy Haul Train Load." Applied Sciences 12, no. 3 (2022): 1694. http://dx.doi.org/10.3390/app12031694.

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To meet the transportation requirements of heavy-haul trains, it is necessary to consider the use of prestressed reinforced concrete ballastless tracks. Therefore, the CRTSIII SBT (China Railway Track System III-type slab ballastless track) has been considered for its convenient construction and geometric adjustment. Considering the problems existing in the base plate of CRTSIII SBT in heavy-haul applications, an indoor test and simulation were conducted to explore the cracking phenomenon of the base plate concrete under fatigue load. The reliability of the simulation was verified through the

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Herron, Jonathan B. T., Andrew Harbit, and James A. T. Dunbar. "Subduing the killer - sepsis; through simulation." BMJ Evidence-Based Medicine 24, no. 1 (2018): 26–29. http://dx.doi.org/10.1136/bmjebm-2018-110960.

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Few pathophysiological processes have a higher morbidity and mortality than sepsis. Implementing effective strategies to improve these poor outcomes remains a challenge. Previous work has shown improvements using single and multifaceted approaches, many with inclusion of sepsis training for doctors and nurses. However, previous work has not necessarily trained all those involved in the recognition and treatment of sepsis. After sepsis simulation training using cognitive-constructivist teaching methods, reaudit demonstrated highly significant improvement in ‘sepsis-six’ delivery. This study fou

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Tarichko, V.I., and A. Lagerev Igor. "Dynamics simulation and experimental analysis of a mobile cable car base station's mechanical transmissions." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 6, no. 2 (2020): 318–26. https://doi.org/10.22281/2413-9920-2020-06-02-318-326.

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The article presents the results of simulation and experimental studies of the working processes of transmissions of base stations of mobile cable cars. Mobile cable cars based on special wheeled or tracked chassis are designed for transportation of goods in difficult conditions. Considered the basic scheme of the mobile transmission cable cars. The mathematical model of transmission working processes is presented. The results of modeling with the use of different mathematical models are compared. To confirm the adequacy of the presented mathematical model, experimental studies of transmission

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Baptista, António José, Dulce Maria Rodrigues, and Luís Filipe Menezes. "Influence of the Weld on the Mechanical Behaviour of Tailor Welded Blanks." Materials Science Forum 514-516 (May 2006): 1493–500. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1493.

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In new car production, an innovative method to produce strong and light panels consists in applying Tailor Welded Blanks (TWBs) in the body-in-white base structure. Since the fusion welding processes can induce significant changes in the material properties of the base materials, an important question is whether the weld bead has a significant influence on the overall behaviour of the welded blanks. In this work, some preliminary conclusions on this subject were achieved based on results of the numerical simulation of simple mechanical tests: tensile, shear and simple bending. The numerical si

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Ageenkov, E. V., A. A. Sitnikov, and E. N. Vodneva. "Results of Mathematical Simulation of Transient Processes for the Sea Shelf Conditions." Russian Geology and Geophysics 63, no. 7 (2022): 802–15. http://dx.doi.org/10.2113/rgg20204260.

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Abstract —Electrical exploration measurements in water areas and on land are carried out to study the electromagnetic (EM) properties of geological formations. A distinctive feature of aquatic electrical exploration is associated with the specific influence of a water column. Numerical calculations of the EM signal of the transient process for electrical lines in the axial region of the source under the conditions of marine waters with a depth of 50 to 250 m are presented in order to demonstrate how an induced polarization (IP) signal manifests itself in a transient process signal on different

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Naumov, Vitalii, Ievhen Nagornyi, and Yana Litvinova. "Model of multimodal transport node functioning." Archives of Transport 36, no. 4 (2015): 43–54. http://dx.doi.org/10.5604/08669546.1185202.

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To increase the efficiency of transport nodes functioning taking into account the logistics management principles it is necessary to optimize the structure and capacity of transport nodes' production resources, and to develop such a method for calculating of joint schedules for vehicles and freight hubs of the transport node, which takes into account stochastic nature of the parameters of material and informational flows. For solving the problems of optimal management of transport nodes functioning processes it is proposed to use the specific efficiency indicator, which is determined as a rati

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Godzhaev, Zakhid, Sergey Senkevich, Ivan Malakhov, and Sergey Uyutov. "Development of a mathematical model of the oscillatory system of agricultural mobile power equipment with attachments for the creation of their adaptive springing systems." E3S Web of Conferences 413 (2023): 02042. http://dx.doi.org/10.1051/e3sconf/202341302042.

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A mathematical model of oscillations of a mobile energy means (MEM) is presented and investigated. The proposed MEM oscillation model makes it possible to determine the positions of the MEM center of mass points in various situations on a support base (agrophone) with a different microprofile. Differential equations have been compiled for computer simulation. The solution of differential equations describing the oscillations of the MEM during its movement in a compound with attachments, as well as a computational experiment-simulation modeling were performed in the software complexes Mathcad a

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Wang, Houzhi, You Wu, Jun Yang, and Haopeng Wang. "Numerical Simulation on Reflective Cracking Behavior of Asphalt Pavement." Applied Sciences 11, no. 17 (2021): 7990. http://dx.doi.org/10.3390/app11177990.

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Cracks are one of the main problems that plague road workers. A correct understanding of the internal crack propagation mechanism of asphalt pavement will help road workers evaluate the road’s working status more comprehensively and make more reasonable decisions in design, construction, and maintenance work. This paper established a three-dimensional asphalt pavement layered model using the software ABAQUS and fracture mechanics theory and the extended finite element method were used to explore the mechanical response of the pavement base layer’s preset reflective cracks. This paper investiga

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NIZAMUTDINOV, M. M., and V. V. ORESHNIKOV. "MODELING OF ADAPTIVE BEHAVIOR PROPERTIES OF PARTICIPANTS OF SOCIO-ECONOMIC PROCESSES." Izvestia Ufimskogo Nauchnogo Tsentra RAN, no. 3 (September 30, 2021): 55–60. http://dx.doi.org/10.31040/2222-8349-2021-0-3-55-60.

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The article deals with the issues of modeling socio-economic systems at the regional level. A promising direction in this area is the use of an agent-based approach based on taking into account the features and a certain autonomy of the behavior of interacting agents. Moreover, one of their key properties is the ability to adapt to changing conditions of functioning. Proceeding from this, in order to solve the problems of increasing the efficiency of developing strategic decisions, it is necessary to develop tools to support management decisions, which will be based on the use of an adaptive s

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Bondarenko, Iryna, Alessandro Severino, Isaac Oyeyemi Olayode, Tiziana Campisi, and Larysa Neduzha. "Dynamic Sustainable Processes Simulation to Study Transport Object Efficiency." Infrastructures 7, no. 9 (2022): 124. http://dx.doi.org/10.3390/infrastructures7090124.

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The development of reliability theory has led to the setting of tasks requiring consideration of the efficiency and functional safety of technical objects of transport over the life cycle. The paper demonstrates the possibility of using the universal laws of elastic wave theory to describe natural phenomena occurring in complex dynamic systems, on the examples of solving issues arising in the interaction of rolling stock and the railway track. The accounting of the time component and the ability of elastic waves to propagate energy in time and space allowed considering any interaction process

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Cazelles, B., and D. Fontvieille. "Modélisation d'un système lotique pollué par une charge organique : prise en compte de l'activité des microorganismes benthiques." Revue des sciences de l'eau 2, no. 4 (2005): 511–41. http://dx.doi.org/10.7202/705041ar.

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Les études entreprises depuis 1982 sur un petit cours d'eau pollué par une forte charge organique, ont servi de base au développement d'un modèle mathématique destiné à appréhender le fonctionnement des mécanismes d'auto-épuration. L'écriture du modèle a débuté par la description de l'écoulement du cours d'eau et des mécanismes de transports associés. Deux sous-modèles ont été utilisés dans ce but : un sous-modèle hydrodynamique dérivé du modèle de Saint-Venant et un sous-modèle de transport, constitué par l'équation classique de convection-dispersion. Ces deux sous-modèles sont appliqués à un

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Gai, Deng Yu, Yu Zhao Chu, Qing Fen Li, and Qun Xia Li. "Process Optimization of Large Turbine Blade Casting Base on Numerical Simulation." Applied Mechanics and Materials 16-19 (October 2009): 535–39. http://dx.doi.org/10.4028/www.scientific.net/amm.16-19.535.

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3-D velocity and temperature fields of mold filling and solidification processes of large turbine blade casting were simulated. It indicated that the velocity field of upright casting is faster and steadier than lying casting. The deformation was predicted and the rule of deformation was reflected by analyzing stress field during solidification of upright casting. The casting processes were optimized, and then applied to produce castings.

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Gaidzhurov, P. P., N. A. Saveleva, and E. V. Trufanova. "Numerical simulation of the behavior of kinematically unstable slopes under dynamic influences." Advanced Engineering Research 21, no. 4 (2022): 300–307. http://dx.doi.org/10.23947/2687-1653-2021-21-4-300-307.

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Introduction. The concept of estimating the dynamic parameters of the “base — weakened layer — block” system is proposed, taking into account the physical nonlinearity of the material and the kinematic method of excitation of vibrations. In accordance with this approach, the physical nonlinearity of the base and block material is considered using the Drucker- Prager model. The weakened layer is modeled by 3D spring finite elements. The verification procedure of the proposed methodology is carried out on the example of the dynamic calculation of the “base — weakened layer — slope” system.Materi

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Deng, Liang, Sergej Mozgovoy, Jens Hardell, Braham Prakash, and Mats Oldenburg. "Implementation of Wear Models for Stamping Tools under Press Hardening Conditions Based on Laboratory Tests." Advanced Materials Research 1063 (December 2014): 339–42. http://dx.doi.org/10.4028/www.scientific.net/amr.1063.339.

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Tool wear occurring in press hardening processes receives insufficient attention since its corresponding measurements and full-scale experiments are complicated and expensive. This paper presents a study of tool wear in press hardening based on laboratory experiments and FE-simulations. Two experimental laboratory setups depending on the contact conditions in press hardening build the base for the wear models implemented in the FE-simulation to predict wear depths. The highest wear depth is found at the radius of the stamping tool and the discrepancies in wear predictions based on the two diff

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Panferov, Anatolii Dmitrievich, and Alexey Vladimirovich Makhankov. "Simulation of the effect of short optical pulses on graphene." Program Systems: Theory and Applications 10, no. 1 (2019): 47–58. http://dx.doi.org/10.25209/2079-3316-2019-10-1-47-58.

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The interaction of high-frequency pulsed electric fields with graphene is currently the subject of intense research. The paper presents the results of testing a software system for modeling such processes using the example of ultrashort laser pulses of the optical range with different polarizations. The authors develop the system on a base of a new theoretical approach based on the quantum kinetic equation. The approach contains a computational model for a new system of ordinary differential equations with non-linearly dependent on time and problem parameters coefficients. The need to analyze

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Berroug, Fatiha, El Khadir Lakhal, Mohamed El Omari, and Hamid El Qarnia. "Simulation numérique des besoins énergétiques d’une serre agricole sous le climat de Marrakech - Maroc." Journal of Renewable Energies 13, no. 1 (2023): 133–48. http://dx.doi.org/10.54966/jreen.v13i1.184.

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Dans ce travail, on présente un modèle du bilan énergétique d’une serre agricole basé sur un ensemble d’équations théoriques intégrant les processus d’échanges thermiques entre les différentes composantes de la serre en tenant compte du couvert végétal. Le modèle ainsi développé prend en considération les conditions météorologiques instantanées du lieu de plantation de la serre (température, humidité, radiations solaires, vitesse du vent). Le système d’équations non linéaires obtenu est résolu par la méthode itérative de Newton-Raphson. Elle permet de prédire les paramètres climatiques suivant

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Abe, S., J. H. Adams, D. Allard, et al. "EUSO-Offline: A comprehensive simulation and analysis framework." Journal of Instrumentation 19, no. 01 (2024): P01007. http://dx.doi.org/10.1088/1748-0221/19/01/p01007.

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Abstract The complexity of modern cosmic ray observatories and the rich data sets they capture often require a sophisticated software framework to support the simulation of physical processes, detector response, as well as reconstruction and analysis of real and simulated data. Here we present the EUSO-Offline framework. The code base was originally developed by the Pierre Auger Collaboration, and portions of it have been adopted by other collaborations to suit their needs. We have extended this software to fulfill the requirements of Ultra-High Energy Cosmic Ray detectors and very high energy

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Li, Xin, Zhi Xiong Zhang, Jian Zhong Shang, and Yu Jun Cao. "Research on Angular Variation for Aeroplane-Assembly Base on State Space Model." Applied Mechanics and Materials 278-280 (January 2013): 149–54. http://dx.doi.org/10.4028/www.scientific.net/amm.278-280.149.

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Abstract. Variation modeling is one of the most significant tools for assembly variation analysis. Considering dimension and geometric errors, and part situation errors, the error source that affects assembly accuracy is classified into two types: error of geometric location and orientation, error of geometric form. And unify these different types of error or deviation by the concept of Virtual Fixture. So a rigid assembly state space model is developed for stream of variation analysis in multi-station assembly processes. And an aeroplane-cabin-assembly process is analyzed in this model. The d

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Caparros-Mancera, Julio Jose, Cesar Antonio Rodríguez, Ángel Mariano Rodríguez-Pérez, and Jose Antonio Hernández-Torres. "MODELING AND SIMULATION OF INDUSTRIAL PROCESSES = Modelado y simulación de procesos industriales." Advances in Building Education 8, no. 1 (2024): 46–60. http://dx.doi.org/10.20868/abe.2024.1.5233.

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Este artículo presenta una metodología didáctica aplicada a los estudios de ingeniería. A partir del uso de herramientas digitales se desarrolla una metodología para modelar y simular un proceso de fabricación industrial. La metodología comienza con el análisis del proceso de fabricación, por lo que los estudiantes realizan una aproximación analítica al modelado del sistema productivo analizado. A continuación, se utiliza una herramienta digital para modelar dicho sistema en base a los parámetros previamente analizados. Con la simulación del modelo, los estudiantes de ingeniería analizan los r

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Wang, Qiang, Qi Shu, Alexandra Bozec, et al. "Impact of increased resolution on Arctic Ocean simulations in Ocean Model Intercomparison Project phase 2 (OMIP-2)." Geoscientific Model Development 17, no. 1 (2024): 347–79. http://dx.doi.org/10.5194/gmd-17-347-2024.

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Abstract. This study evaluates the impact of increasing resolution on Arctic Ocean simulations using five pairs of matched low- and high-resolution models within the OMIP-2 (Ocean Model Intercomparison Project phase 2) framework. The primary objective is to assess whether a higher resolution can mitigate typical biases in low-resolution models and improve the representation of key climate-relevant variables. We reveal that increasing the horizontal resolution contributes to a reduction in biases in mean temperature and salinity and improves the simulation of the Atlantic water layer and its de

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Shi, Hong Yan, Ming Zhe Yuan, and Tian Ran Wang. "Design of Biodiesel Production Processes by Base-Catalyzed Transesterification." Advanced Materials Research 512-515 (May 2012): 510–14. http://dx.doi.org/10.4028/www.scientific.net/amr.512-515.510.

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A lot of efforts have been carried out to develop an alternative fuel for the current energy and environment questions. Biodiesel which is synthesized by transesterification of plant oils and animal fat is a real alternative fuel for its renewable and lower emissions. Currently, biodiesel production by the base-catalyzed transesterification of the vegetable oil and methanol is widely utilized in the world. This paper studies the design of biodiesel production with the glycerol phase separation processes, through installing a decanter between reactors and adding methanol and NaOH batch optimiza

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Cha, Woon-Yong, Se-Bin Im, Jae-Won Kim, and Dae-Gwan Kang. "The Simulation of the Dynamic Characteristics of Friction Stir Welding and the Structural Deflection of Base Materials." Applied Sciences 12, no. 19 (2022): 9847. http://dx.doi.org/10.3390/app12199847.

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Friction stir welding requires an optimized process because the quality of the weld can vary depending on the dynamic characteristics of the welding tool. In addition, controlling the structural deflection of the base material according to the load of the welding tool is important. In this study, the structural deflection of thin base material according to the dynamic characteristics of the welding tool was confirmed using dynamic simulation. The generated deflection was controlled through the fixing clamp, and the results according to the rotation and progress speed of the welding tool were c

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Senfter, Thomas, Manuel Berger, Markus Schweiberer, Serafin Knitel, and Martin Pillei. "An Experimentally Validated CFD Code to Design Coandă Effect Screen Structures." Applied Sciences 13, no. 9 (2023): 5762. http://dx.doi.org/10.3390/app13095762.

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Coandă effect screen structures are used to protect hydropower turbines in mountainous regions from impurities of different sizes. To save time during the design phase, computational fluid dynamics simulations (CFD) can support experimental investigations. Experimental investigations and 2D CFD simulations are performed on the base of the Coandă effect screen structure. Flow rates of 7 m3/h, 8 m3/h, and 9 m3/h are simulated, captured by a camera system in the experiments, and compared. In the experimental setting, the fill level of the Coandă rake is measured. For comparison, the RMSE of the y

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