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Journal articles on the topic 'Simulations EM'

Author: Grafiati

Published: 1 February 2023

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1

Shan-Shan, QIN, and YU Zhi-Wu. "Molecular Dynamics Simulations of α-Tocopherol in Model Biomembranes." Acta Physico-Chimica Sinica 27, no. 01 (2011): 213–27. http://dx.doi.org/10.3866/pku.whxb20110109.

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2

Wood. "Contests and Simulations: Tron: Legacy's Connections with Technologies." Journal of Film and Video 66, no. 3 (2014): 31. http://dx.doi.org/10.5406/jfilmvideo.66.3.0031.

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3

Jiang, Hao Lin, Li Ting Wu, Xin Ge Zhang, Qiang Wang, Pei Yu Wu, Che Liu, and Tie Jun Cui. "Computationally Efficient CN-PML for EM Simulations." IEEE Transactions on Microwave Theory and Techniques 67, no. 12 (December 2019): 4646–55. http://dx.doi.org/10.1109/tmtt.2019.2946160.

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4

Caulfield, Thomas R., Batsal Devkota, and Geoffrey C. Rollins. "Examinations of tRNA Range of Motion Using Simulations of Cryo-EM Microscopy and X-Ray Data." Journal of Biophysics 2011 (March 28, 2011): 1–11. http://dx.doi.org/10.1155/2011/219515.

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We examined tRNA flexibility using a combination of steered and unbiased molecular dynamics simulations. Using Maxwell's demon algorithm, molecular dynamics was used to steer X-ray structure data toward that from an alternative state obtained from cryogenic-electron microscopy density maps. Thus, we were able to fit X-ray structures of tRNA onto cryogenic-electron microscopy density maps for hybrid states of tRNA. Additionally, we employed both Maxwell's demon molecular dynamics simulations and unbiased simulation methods to identify possible ribosome-tRNA contact areas where the ribosome may discriminate tRNAs during translation. Herein, we collected >500 ns of simulation data to assess the global range of motion for tRNAs. Biased simulations can be used to steer between known conformational stop points, while unbiased simulations allow for a general testing of conformational space previously unexplored. The unbiased molecular dynamics data describes the global conformational changes of tRNA on a sub-microsecond time scale for comparison with steered data. Additionally, the unbiased molecular dynamics data was used to identify putative contacts between tRNA and the ribosome during the accommodation step of translation. We found that the primary contact regions were H71 and H92 of the 50S subunit and ribosomal proteins L14 and L16.

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Stefani, Joe, Michael Frenkel, Neda Bundalo, Richard Day, and Michael Fehler. "Seam update: Models for EM and gravity simulations." Leading Edge 29, no. 2 (February 2010): 132–35. http://dx.doi.org/10.1190/tle29020132.1.

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6

Ting-Ting, ZHOU, SHI Yi-Ding, and HUANG Feng-Lei. "Thermal Decomposition Mechanism of β-HMX under High Pressures via ReaxFF Reactive Molecular Dynamics Simulations." Acta Physico-Chimica Sinica 28, no. 11 (2012): 2605–15. http://dx.doi.org/10.3866/pku.whxb201208031.

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7

Yates, Evan, Roger Chirurgi, Frosso Adamakos, Rania Habal, Rajnish Jaiswal, Hossein Kalantari, and Getaw Worku Hassen. "Development and Utilization of 3D Printed Material for Thoracotomy Simulation." Emergency Medicine International 2018 (November 15, 2018): 1–8. http://dx.doi.org/10.1155/2018/9712647.

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Medical simulation is a widely used training modality that is particularly useful for procedures that are technically difficult or rare. The use of simulations for educational purposes has increased dramatically over the years, with most emergency medicine (EM) programs primarily using mannequin-based simulations to teach medical students and residents. As an alternative to using mannequin, we built a 3D printed models for practicing invasive procedures. Repeated simulations may help further increase comfort levels in performing an emergency department (ED) thoracotomy in particular, and perhaps this can be extrapolated to all invasive procedures. Using this model, a simulation training conducted with EM residents at an inner city teaching hospital showed improved confidence. A total of 21 residents participated in each of the three surveys [(1) initially, (2) after watching the educational video, and (3) after participating in the simulation]. Their comfort levels increased from baseline after watching the educational video (9.5%). The comfort level further improved from baseline after performing the hands on simulation (71.4%).

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8

Chen, Zai Liang, Sheng Tao Wang, Dong Min Wu, and Ji Ne Wang. "The Modeling and Simulation of Sheet Metal Flexible Manufacturing System Based on eM-Plant." Applied Mechanics and Materials 44-47 (December 2010): 754–57. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.754.

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The components of sheet metal FMS are abstracted corresponding eM-Plant object, the sheet metal FMS’s automatic guided vehicle system and parts management system are built in eM-Plant. Adjusting the system parameters in the model, several simulations obtained an ideal simulation result. These research show that, using eM-Plant software to build model and simulate for sheet metal FMS can save time, improve simulation result of sheet metal FMS.

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Chen, Zai Liang, Guang Ju Si, Chuan Yang Wang, and Dian Li Wu. "Parametric Design of Foamed Sheet Die." Advanced Materials Research 201-203 (February 2011): 768–72. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.768.

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The components of sheet metal FMS are abstracted corresponding eM-Plant object, the sheet metal FMS’s automatic guided vehicle system and parts management system are built in eM-Plant. Adjusting the system parameters in the model, several simulations obtained an ideal simulation result. These research show that, using eM-Plant software to build model and simulate for sheet metal FMS can save time, improve simulation result of sheet metal FMS.

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Kathirgamaraju, Adithan, Alexander Tchekhovskoy, Dimitrios Giannios, and Rodolfo Barniol Duran. "EM counterparts of structured jets from 3D GRMHD simulations." Monthly Notices of the Royal Astronomical Society: Letters 484, no. 1 (January 23, 2019): L98—L103. http://dx.doi.org/10.1093/mnrasl/slz012.

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11

Ng, Tang-Tat, Wei Zhou, Gang Ma, and Xiao-Lin Chang. "Damping and Particle Mass in DEM Simulations under Gravity." Journal of Engineering Mechanics 141, no. 6 (June 2015): 04014167. http://dx.doi.org/10.1061/(asce)em.1943-7889.0000889.

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12

Harvey, P. S. "Vertical Accelerations in Rolling Isolation Systems: Experiments and Simulations." Journal of Engineering Mechanics 142, no. 3 (March 2016): 04015091. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001017.

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Gong, Guobin, Colin Thornton, and Andrew H. C. Chan. "DEM Simulations of Undrained Triaxial Behavior of Granular Material." Journal of Engineering Mechanics 138, no. 6 (June 2012): 560–66. http://dx.doi.org/10.1061/(asce)em.1943-7889.0000366.

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Tsai, Ching-Piao, Ching-Ching Yen, and Chang Lin. "Simulations on Skimming Flow over a Vertical Drop Pool." Journal of Engineering Mechanics 140, no. 7 (July 2014): 04014044. http://dx.doi.org/10.1061/(asce)em.1943-7889.0000751.

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15

Chen, Yanni, Ferdinando Marinelli, and Giuseppe Buscarnera. "Influence of Clay Anisotropy on Model Simulations of Wetting Collapse." Journal of Engineering Mechanics 146, no. 2 (February 2020): 04019130. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001703.

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Sala, Davide, Andrea Giachetti, and Antonio Rosato. "Molecular dynamics simulations of metalloproteins: A folding study of rubredoxin from Pyrococcus furiosus." AIMS Biophysics 5, no. 1 (2018): 77–96. http://dx.doi.org/10.3934/biophy.2018.1.77.

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17

Johansen, Tom K., Ralf Doerner, Nils Weimann, Maruf Hossain, Viktor Krozer, and Wolfgang Heinrich. "EM simulation assisted parameter extraction for transferred-substrate InP HBT modeling." International Journal of Microwave and Wireless Technologies 10, no. 5-6 (May 7, 2018): 700–708. http://dx.doi.org/10.1017/s1759078718000636.

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AbstractIn this paper, an electromagnetic (EM) simulation assisted parameter extraction procedure is demonstrated for accurate modeling of down-scaled transferred-substrate InP HBTs. The external parasitic network associated with via transitions and device electrodes is carefully extracted from calibrated three-dimensional EM simulations up to 325 GHz. Following an on-wafer multi-line Through-Reflect-Line calibration procedure, the external parasitic network is de-embedded from the transistor measurements and the active device parameters are extracted in a reliable way. The small-signal model structure augmented with the distributed parasitic network provides accurate small-signal prediction up to 220 GHz.

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18

Yoon, Tecnam. "The Application of Virtual Simulations Using Second Life in a Foreign Language Classroom." Studies in English Language Teaching 2, no. 1 (March 7, 2014): 67. http://dx.doi.org/10.22158/selt.v2n1p67.

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<p><em>The purpose of this paper is to investigate the effects of virtual simulation-based language learning in a foreign language class in Korea. Total 35 1st-year university students in Korea participated in this research to figure out the effect of simulations. A virtual English learning community, ‘Cypris Chat’ in Second Life was selected as a learning tool. For the data collection, a survey questionnaire was distributed and analyzed quantitatively. The result shows that the majority of the students had a positive attitude toward using a virtual simulation in English learning and had better understanding in learning English by experiencing an authentic practice. The first section of this paper provides a general overview of simulations in educational settings through an insightful literature review of the current research in the area. The review includes a comprehensive outlook on simulations, an example of successful classroom integration and some of the considerations researchers have found for their implementation. The latter section addresses the research method, results and conclusions.</em></p>

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19

Tsai, Tzong-Ru, Yuhlong Lio, and Wei-Chen Ting. "EM Algorithm for Mixture Distributions Model with Type-I Hybrid Censoring Scheme." Mathematics 9, no. 19 (October 4, 2021): 2483. http://dx.doi.org/10.3390/math9192483.

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An expectation–maximization (EM) likelihood estimation procedure is proposed to obtain the maximum likelihood estimates of the parameters in a mixture distributions model based on type-I hybrid censored samples when the mixture proportions are unknown. Three bootstrap methods are applied to construct the confidence intervals of the model parameters. Monte Carlo simulations are conducted to evaluate the performance of the proposed methods. Simulation results show that the proposed methods can perform well to obtain reliable point and interval estimation results. Three examples are used to illustrate the applications of the proposed methods.

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20

Wilson, D. W., B. M. W. Tsui, and H. H. Barrett. "Noise properties of the EM algorithm. II. Monte Carlo simulations." Physics in Medicine and Biology 39, no. 5 (May 1, 1994): 847–71. http://dx.doi.org/10.1088/0031-9155/39/5/005.

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21

Glück, Ferenc. "EM field, tracking and scattering simulations for the KATRIN experiment." Journal of Physics: Conference Series 410 (February 8, 2013): 012039. http://dx.doi.org/10.1088/1742-6596/410/1/012039.

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22

Plazinic, Ana, Milka Potrebic, Dejan Tosic, and Milan Plazinic. "Compact microwave triple-mode bandpass filter in planar technology." Serbian Journal of Electrical Engineering 14, no. 2 (2017): 217–28. http://dx.doi.org/10.2298/sjee170117003p.

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This paper introduces a novel microwave planar filter design using triple?mode resonator. In order to achieve the filter size reduction we use the multilayer technology. The structure consists of two dielectric layers separated by a common ground plane. The triple ? mode resonator consists of two dualmode resonators which are placed on different sides of dielectric layers. Electrical connection between the two resonators is realized by using a via-hole. We use the dual-mode resonator with the short circuited central stub. The filter is designed for the center frequency of 1 GHz. In order to reduce the simulation time for the filter design, we propose a new circuit model, because the circuitlevel simulations are significantly faster than three-dimensional electromagnetic (3D EM) simulations. The 3D filter structure is decomposed into domains and each of them is modeled by a microwave network. The results of the 3D EM simulation and circuit-level simulation are in good agreement.

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23

Shi, Liang, and DongHun Yeo. "Large Eddy Simulations of Model-Scale Turbulent Atmospheric Boundary Layer Flows." Journal of Engineering Mechanics 143, no. 9 (September 2017): 06017011. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001281.

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24

Aricioglu, Burak, and Abdullah Ferikoglu. "Thermal Effects of 5G Frequency EM Waves on Ocular Tissue." Applied Computational Electromagnetics Society 36, no. 4 (May 10, 2021): 386–97. http://dx.doi.org/10.47037/2020.aces.j.360404.

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This research article aims to investigate the thermal effects on human eye due to exposure of EM (electromagnetic) field at 5G frequencies. A secondary purpose of the article is to show that SPICE, one of the most commonly used tools in circuit analysis, can be used to solve complex EM and bioheat transfer problems. Both electric field and temperature distributions in human eye are simulated with transmission line modelling (TLM) method. Also, finite element method (FEM) calculations are carried out for comparison. Temperature distributions are calculated for 30 minutes of EM radiation exposure. As a subject of the simulation, a human is chosen that the power density of incoming field at the human eye is assumed as the maximum of the ICNIRP general public exposure limits. A good consistency between TLM and FEM based simulations is found. A new transmission line model based on Debye parametric model is generated for simulation of EM field distribution in the tissues. With this generated transmission line, the results for the frequencies of interest can be obtained via single simulation. Also, a new transmission line model is developed for the temperature distribution simulation in which the effects of noncompressible fluid flow such as non-unidirectional blood flow in tissues and flow in aqueous humor are taken into consideration.

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25

Campos, Cláudia Rejane Jacondino de, Edna Cristina Sodré Lima, and Luciana Barros Pinto. "Complexo Convectivo de Mesoescala observado em 27/11/2002 no nordeste da Argentina." Anuário do Instituto de Geociências 31, no. 2 (December 1, 2008): 23–32. http://dx.doi.org/10.11137/2008_2_23-32.

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In this work were analyzed the synoptic situations associated to a Mesoscale Convective Complex (CCM), observed on 11/27/2002 in the northeast of Argentina. Infrared imagery from GOES-8 and simulations from BRAMS regional model were used. The model simulation, with three hours issues, allowed detailing the behavior of the meteorological variables in large scale that affect the MCC life cycle, being able to reproduce the suitable conditions to its beginning, development and dissipation. The results showed that the MCC studied presented similar characteristics to those observed by several authors

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26

Alonso-Eugenio, Victor, Victor Guerra, Santiago Zazo, and Ivan Perez-Alvarez. "Software-in-Loop Simulation Environment for Electromagnetic Underwater Wireless Sensor Networks over STANAG 5066 Protocol." Electronics 9, no. 10 (October 1, 2020): 1611. http://dx.doi.org/10.3390/electronics9101611.

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In this work, the development of a software-in-loop platform to carry out Underwater Wireless Sensor Network (UWSN) simulations using a real-time STANAG 5066 stack is presented. The used protocol stack is part of a real-world implementation of an underwater wireless node based on ElectroMagnetic (EM) Underwater Radio Frequency Communication (EM-URFC), framed within Spanish Government’s project HERAKLES. The main objective of this work was to assess the suitability of this software-in-loop approach for carrying out realistic UWSN simulations. In addition to a detailed description of the simulation process, several simulations considering an illustrative network topology are performed, analyzing the impact of different critical parameters on the network performance. The conclusions suggest that the developed software-in-loop platform is suitable to carry out UWSN network tests using a real-world implementation of the STANAG 5066 stack. Moreover, other real-time protocol stacks may be easily adapted with minor modifications.

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27

ELIASSON, BENGT. "FULL-SCALE SIMULATIONS OF IONOSPHERIC LANGMUIR TURBULENCE." Modern Physics Letters B 27, no. 08 (March 13, 2013): 1330005. http://dx.doi.org/10.1142/s0217984913300056.

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This brief review is devoted to full-scale numerical modeling of the nonlinear interactions between electromagnetic (EM) waves and the ionosphere, giving rise to ionospheric Langmuir turbulence. A numerical challenge in the full-scale modeling is that it involves very different length- and time-scales. While the EM waves have wavelengths of the order 100 meters, the ionospheric Langmuir turbulence involving electrostatic waves and nonlinear structures can have wavelengths below one meter. A full-scale numerical scheme must resolve these different length- and time-scales, as well as the ionospheric profile extending vertically hundreds of kilometers. To overcome severe limitations on the timestep and computational load, a non-uniform nested grid method has been devised, in which the EM wave is represented in space on a relatively coarse grid with a spacing of a few meters, while the electrostatic wave turbulence is locally resolved on a much denser grid in space at the critical layer where the turbulence occurs. Interpolation and averaging schemes are used to communicate values of the EM fields and current sources between the coarse and dense grids. In this manner, the computational load can be drastically decreased, making it possible to perform full-scale simulations that cover the different time- and space-scales. We discuss the simulation methods and how they are used to study turbulence, stimulated EM emissions, particle acceleration and heating, and the formation of artificial ionospheric plasma layers by ionospheric Langmuir turbulence.

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Squires, John R., Kevin S. McKelvey, and Leonard F. Ruggiero. "A Snow-tracking Protocol Used to Delineate Local Lynx, Lynx canadensis, Distributions." Canadian Field-Naturalist 118, no. 4 (October 1, 2004): 583. http://dx.doi.org/10.22621/cfn.v118i4.60.

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Determining Canada Lynx (Lynx canadensis) distribution is an important management need, especially at the southern extent of the species range where it is listed as threatened under the U. S. Endangered Species Act. We describe a systematic snowtrack based sampling framework that provides reliable distribution data for Canada Lynx. We used computer simulations to evaluate protocol efficacy. Based on these simulations, the probability of detecting lynx tracks during a single visit (8 km transect) to a survey unit ranged from approximately 0.23 for surveys conducted only one day after snowfall, to 0.78 for surveys conducted 7 days after a snowfall. If the survey effort was increased to three visits, then detection probabilities increased substantially from 0.58 for one day after snowfall to about 0.95 for surveys conducted 7 days after a snowfall. We tested the protocol in the Garnet Range, Montana, where most lynx were radio-collared. We documented a total of 189 lynx tracks during two winters (2001-2003). Lynx distribution based on snow-track surveys was coincident with the area defined through radio telemetry. Additionally, we conducted snow-track surveys in areas of western Wyoming where lynx were believed present but scarce. We detected a total of six lynx tracks during three winters (1999-2002). In Wyoming , where lynx presence was inferred from a few tracks, we verified species identification by securing genetic samples (hairs from daybeds) along track-lines.

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29

Chiozzi, Andrea, Gabriele Milani, and Antonio Tralli. "Fast Kinematic Limit Analysis of FRP-Reinforced Masonry Vaults. II: Numerical Simulations." Journal of Engineering Mechanics 143, no. 9 (September 2017): 04017072. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001268.

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30

Mathiazhagan, S., and S. Anup. "Atomistic Simulations of Length-Scale Effect of Bioinspired Brittle-Matrix Nanocomposite Models." Journal of Engineering Mechanics 144, no. 11 (November 2018): 04018104. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001533.

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31

Silva, Francimar Natália, Marco Aurélio Marques Ferreira, Felipe Luis Santiago Pazzini, and Luiz Antônio Abrantes. "ABORDAGEM DETERMINÍSTICA E DE SIMULAÇÃO DE RISCO COMO INSTRUMENTOS DE ANÁLISE DE VIABILIDADE FINANCEIRA EM INVESTIMENTOS IMOBILIÁRIOS." Revista de Negócios 12, no. 3 (February 24, 2008): 03. http://dx.doi.org/10.7867/1980-4431.2007v12n3p03-17.

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Nowadays, the real state market is one of the most significant sections of the Brazilian economy being considered great employment generator and income. This facilitates to move great volumes of financial resources, due its high level of sectorial interrelation. This way, the success of the investment in real state enterprises is fundamental, because this is an key-activity for the national development. Because of that, it makes necessary a previous analysis of financial viability so that the entrepreneur has larger safety taking his decision. However, there are few works specifically linked to the real state section exist. Like this, the present study had a objective to accomplish an analysis of financial viability, complemented by simulations of risk of a project of a real state investment, which consists of the construction of three residential buildings in the municipal district of Viçosa. The financial analysis was accomplished by the methods of evaluation of real state projects and, for the risk analysis was used the technique of Monte Carlo' simulation, using the program @RISK.. The minimum rate of attractively (MRA) considered in the case studied was 1.5%. From the financial analysis, the following data were obtained: payback in the 19th month; liquid present value (LPV) of R$250,688.57; rate of internal returns (RIR) of 5.42% per month and profit index (PI) of 1.27. The result of the simulations, indicated for the exit variables, LPV, RIR and PL medium values of R$ 194.899, 30.5% a month and of 1.26, respectively. For the distributions of accumulated probabilities it can be concluded that this project of real state investment is financially viable and it has low risk. As conclusion, the process of simulation techniques in the generation of information has extreme importance for taking decisions. Key Words: Financial viability. Simulations of risk. Real state investment.

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Ptak, Paweł. "Application of Dasylab in Teaching Electrical Engineering." SOCIETY, INTEGRATION, EDUCATION. Proceedings of the International Scientific Conference 4 (May 18, 2015): 490. http://dx.doi.org/10.17770/sie2015vol4.416.

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<p class="Abstract"><em><span lang="EN-US">The teaching of subjects connected with electricity, such as electrotechnics or electronics is an important part of school and technical university curricula. Due to the recent development of computer technology, laboratory exercises can be performed through simulation. Such simulations can be performed in a virtual environment measurement. <br /> The paper presents an example simulation process of a measuring system in the software environment DasyLab.</span></em></p>

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33

Ivanchenko, Vladimir, Alexander Bagulya, Samer Bakr, Marilena Bandieramonte, Denis Bernard, Marie-Claude Bordage, Helmut Burkhardt, et al. "Geant4 electromagnetic physics progress." EPJ Web of Conferences 245 (2020): 02009. http://dx.doi.org/10.1051/epjconf/202024502009.

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The Geant4 electromagnetic (EM) physics sub-packages are a component of LHC experiment simulations. During long shutdown 2 for LHC, these packages are under intensive development and we report progress of EM physics in Geant4 versions 10.5 and 10.6, which includes faster computation, more accurate EM models, and extensions to the validation suite. New approaches are developed to simulate radiation damage for silicon vertex detectors and for configuration of multiple scattering per detector region. Improvements in user interfaces developed for low-energy and the Geant4-DNA project are used also for LHC simulation optimisation.

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Zandoná, Vitor Caetano Almeida, Sergio Deitos Bittencourt, Moisés De Mattos Dias, Monir Goethel Borba, Eduardo Luis Schneider, José Carlos Krause de Verney, José Lesina Cézar, Luiz Carlos Gertz, and Lirio Schaeffe. "ESTUDO DE MATERIAIS MAGNÉTICOS MACIOS SINTERIZADOS PARA APLICAÇÃO EM SERVOMOTORES." Revista Tecnologia e Tendências 11, no. 1 (September 15, 2020): 170. http://dx.doi.org/10.25112/rtt.v11i1.2297.

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Resumo Este trabalho teve por objetivo o estudo de ligas sinterizadas a partir de Fe puro, FeP, FeSi e FeNi obtidas a partir do processo da Metalurgia do Pó e sua aplicação em núcleos de rotor e estator de servomotores, operando com corrente elétrica de armadura de alta freqüência, reduzindo assim, nestas frequências, as correntes parasitas, as quais causam perda de potência nestas máquinas. O estudo compreendeu obtenção de curvas de histerese destas diversas ligas, ensaios para avaliação de perdas elétricas e simulação em software de elementos finitos para obtenção de fluxo de entreferro e conjugado eletromagnético (torque). Os estudos teóricos e simulações foram realizados em um servomotor de topologia convencional e os testes foram realizados comparativamente a servomotores com núcleos obtidos a partir de chapas de aço laminadas. Nas simulações realizadas estaticamente, o torque instantâneo e o fluxo magnético no núcleo de Fe1%P resultaram valores próximos em relação às tradicionais chapas de aço laminadas. O núcleo de Fe1%P apresentou torque instantâneo de 1,59 N.m e fluxo magnético de 1,70 T e o núcleo de chapas de aço laminadas, respectivamente, 1,65 N.m e 1,66 T.Palavras-chave: Metalurgia do Pó. Servomotores. Simulação por elementos finitos. ABSTRACT This work aimed to study sintered alloys from pure Fe, FeP, FeSi and FeNi obtained by Powder Metallurgy process, and its application in rotor and stator cores of servomotors, operating with armature electric current in high frequency, thus reducing, in these frequencies, eddy currents, which cause loss of power in these machines. The study comprised obtaining hysteresis curves from these different alloys, tests to evaluate electrical losses and simulation in finite element software to obtain airflow and electromagnetic conjugate (torque). Theoretical studies and simulations were performed on a conventional topology of servomotor, and the tests were carried out comparatively to servomotors with cores obtained from rolled steel sheets. In the simulations performed statically, the instantaneous torque and the magnetic flux in the Fe1%P core resulted close values in relation to the traditional laminated steel sheets. The Fe1%P core had an instantaneous torque of 1.59 N.m and a magnetic flux of 1.70 T and the core of rolled steel sheets, respectively, 1.65 N.m and 1.66 T.Keywords: Powder Metallurgy. Servomotors. Finite Element Simulation.

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35

Yoo, Sungjun, Hanjoong Kim, Gangil Byun, and Hosung Choo. "Estimation of Detection Performance for Vehicle FMCW Radars Using EM Simulations." Journal of Electromagnetic Engineering and Science 19, no. 1 (January 31, 2019): 13–19. http://dx.doi.org/10.26866/jees.2019.19.1.13.

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36

Liao, Chenyi, Ye Liu, Dinglin Zhang, and Guohui Li. "Multiscale simulations of large complexes in conjunction with cryo-EM analysis." Current Opinion in Structural Biology 72 (February 2022): 27–32. http://dx.doi.org/10.1016/j.sbi.2021.07.008.

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37

Pietrenko-Dabrowska, Anna, and Slawomir Koziel. "Antenna Modeling Using Variable-Fidelity EM Simulations and Constrained Co-Kriging." IEEE Access 8 (2020): 91048–56. http://dx.doi.org/10.1109/access.2020.2993951.

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Xu, Xinlu, Peicheng Yu, Samual F. Martins, Frank S. Tsung, Viktor K. Decyk, Jorge Vieira, Ricardo A. Fonseca, Wei Lu, Luis O. Silva, and Warren B. Mori. "Numerical instability due to relativistic plasma drift in EM-PIC simulations." Computer Physics Communications 184, no. 11 (November 2013): 2503–14. http://dx.doi.org/10.1016/j.cpc.2013.07.003.

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Zhao, Chao-Fa, and Niels P. Kruyt. "Particle and Continuum Rotations of Granular Materials: Discrete-Element Method Simulations and Experiment." Journal of Engineering Mechanics 147, no. 11 (November 2021): 04021090. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001997.

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Shibata, Masaru, and Kenta Hotokezaka. "Merger and Mass Ejection of Neutron Star Binaries." Annual Review of Nuclear and Particle Science 69, no. 1 (October 19, 2019): 41–64. http://dx.doi.org/10.1146/annurev-nucl-101918-023625.

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Mergers of binary neutron stars and black hole–neutron star binaries are among the most promising sources for ground-based gravitational-wave (GW) detectors and are also high-energy astrophysical phenomena, as illustrated by the observations of GWs and electromagnetic (EM) waves in the event of GW170817. Mergers of these neutron star binaries are also the most promising sites for r-process nucleosynthesis. Numerical simulation in full general relativity (numerical relativity) is a unique approach to the theoretical prediction of the merger process, GWs emitted, mass ejection process, and resulting EM emission. We summarize the current understanding of the processes of neutron star mergers and subsequent mass ejection based on the results of the latest numerical-relativity simulations. We emphasize that the predictions of the numerical-relativity simulations agree broadly with the optical and IR observations of GW170817.

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Dongre, Prateek Kumar, Stephan Havemann, Peter Hargrave, Angiola Orlando, Rashmikant Sudiwala, Christopher Thomas, David Goldie, and Stafford Withington. "End-to-End Instrument Performance Simulation System (EIPS) Framework: Application to Satellite Microwave Atmospheric Sounding Systems." Remote Sensing 11, no. 12 (June 14, 2019): 1412. http://dx.doi.org/10.3390/rs11121412.

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This article presents a generic flexible framework for an End-to-end Instrument Performance Simulation System (EIPS) for satellite atmospheric remote sensing instruments. A systematic process for developing an end-to-end simulation system based on Rodgers’ atmospheric observing system design process has been visualised. The EIPS has been developed to support the quantitative evaluation of new satellite instrument concepts in terms of performance simulations, design optimisation, and trade-off analysis. Important features of this framework include: fast radiative transfer simulation capabilities (fast computation and line-by-line like simulations), applicability across the whole electromagnetic (EM) spectrum and a number of integrated retrieval diagnostics. Because of its applicability across the whole EM spectrum, the framework can be usefully applied to synergistic atmospheric retrieval studies. The framework is continually developing and evolving, and finding applications to support and evaluate emerging instrument and mission concepts. To demonstrate the framework’s flexibility in relation to advanced sensor technologies in the microwave range, a novel superconducting transition edge sensor (TES) -based multi-spectral microwave instrument has been presented as an example. As a case study, the performance of existing multi-spectral-type microwave instruments and a TES-technology-based multi-spectral microwave instrument has been simulated and compared using the developed end-to-end simulation framework.

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Kraus, Daniel, Konrad Diwold, Jesús Pestana, Peter Priller, and Erich Leitgeb. "Towards a Recommender System for In-Vehicle Antenna Placement in Harsh Propagation Environments." Sensors 22, no. 17 (August 23, 2022): 6339. http://dx.doi.org/10.3390/s22176339.

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This paper presents a novel approach to improving wireless communications in harsh propagation environments to achieve higher overall reliability and durability of wireless battery powered sensor systems in the context of in-vehicle communication. The goal is to investigate the physical layer and establish an antenna recommendation system for a specific harsh environment, i.e., an engine compartment of a vehicle. We propose the usage of electromagnetic (EM) and ray tracing simulations as a computationally cost-effective method to establish such a recommendation system, which we test by means of an experimental testbed—or test environment—that consists of both a physical, as well as its identical simulation, model. A pool of antennas is evaluated to identify and verify antenna behavior and properties at specified positions in the harsh environment. We use a vector network analyzer (VNA) for accurate measurements and a received signal strength indicator (RSSI) for a first estimation of system performance. Our analysis of the experimental measurements and its EM simulation counterparts shows that both types of data lead to equivalent antenna recommendations at each of the defined positions and experimental conditions. This evaluation and verification process by measurements on an experimental testbed is important to validate the antenna recommendation process. Our results indicate that—with properly characterized antennas—such measurements can be substituted with EM simulations on an accurate EM model, which can contribute to dramatically speeding up the antenna positioning and selection process.

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Cooper, Dylan D., Adam B. Wilson, Gretchen N. Huffman, and Aloysius J. Humbert. "Medical Students' Perception of Residents as Teachers: Comparing Effectiveness of Residents and Faculty During Simulation Debriefings." Journal of Graduate Medical Education 4, no. 4 (December 1, 2012): 486–89. http://dx.doi.org/10.4300/jgme-d-11-00269.1.

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Abstract Background Simulation can enhance undergraduate medical education. However, the number of faculty facilitators needed for observation and debriefing can limit its use with medical students. The goal of this study was to compare the effectiveness of emergency medicine (EM) residents with that of EM faculty in facilitating postcase debriefings. Methods The EM clerkship at Indiana University School of Medicine requires medical students to complete one 2-hour mannequin-based simulation session. Groups of 5 to 6 students participated in 3 different simulation cases immediately followed by debriefings. Debriefings were led by either an EM faculty volunteer or EM resident volunteer. The Debriefing Assessment for Simulation in Healthcare (DASH) participant form was completed by students to evaluate each individual providing the debriefing. Results In total, 273 DASH forms were completed (132 EM faculty evaluations and 141 EM resident evaluations) for 7 faculty members and 9 residents providing the debriefing sessions. The mean total faculty DASH score was 32.42 and mean total resident DASH score was 32.09 out of a possible 35. There were no statistically significant differences between faculty and resident scores overall (P = .36) or by case type (Ptrauma = .11, Pmedical = .19, Ppediatrics = .48). Conclusions EM residents were perceived to be as effective as EM faculty in debriefing medical students in a mannequin-based simulation experience. The use of residents to observe and debrief students may allow additional simulations to be incorporated into undergraduate curricula and provide valuable teaching opportunities for residents.

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Salles, Leandro De Almeida, Jorge Enoch Furquim Werneck Lima, Henrique Marinho Leite Chaves, Sara Ferrigo, and Heloisa Do Espirito Santo Carvalho. "Impacts of Using Different Soil Databases on Streamflow Simulation in an Experimental Rural Catchment of the Brazilian Savanna (Impactos do Uso de Diferentes Bases de Dados na Simulação da Vazão em uma Represa Experimental Rural da Savanna Brasileira)." Revista Brasileira de Geografia Física 8, no. 1 (October 18, 2015): 187. http://dx.doi.org/10.26848/rbgf.v8.1.p187-195.

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The purpose of this study was to analyze the soil database influence on streamflow simulation using the SWAT model in the experimental catchment of the Pipiripau river (235 km²), located in Brazilian savanna (Cerrado biome). To achieve this goal, two databases were used, one developed with data collected nearby the Pipiripau region (SDB1), and another one with data from literature (SDB2). The evaluation was performed using a streamflow historical time series of 10 years (1989-1998), on monthly and daily basis. The analysis was made without calibration, using only the results from SWATs first simulation, as it was applied in an ungagged basin. For daily simulations, the Nash & Sutcliffe model efficiency (NSE), the adapted Nash & Sutcliffe model efficiency (ANSE), and the Percent Bias (PBIAS) were respectively -11.88, -11.80, and -23.15% for SDB1, and -9.94, -9.88, and -84.72, for SDB2. For the monthly simulations, the NSE, ANSE, and PBIAS results were, respectively,-1.78, -2.98, and -24.53% for SDB1, and 6.51, 9.88, and -84.72 for SDB2. Even if the PBIAS analysis and the annual water budget results for the SDB1 simulations had better results, the negative values of NSE and ANSE indicates that, without calibration, the simulations failed to represent observed data. It is remarkable that the use of SDB1 visibly improved daily baseflow simulations during the rainy season. The results indicate the importance of developing specific soil databases for different regions, as well as research on other parameters in order to improve SWATs physical basis.

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Ray, Kanan Bala, Sushanta Kumar Mandal, and Shivalal Patro. "Low Power FGSRAM Cell Using Sleepy and LECTOR Technique." Indonesian Journal of Electrical Engineering and Computer Science 4, no. 2 (November 1, 2016): 333. http://dx.doi.org/10.11591/ijeecs.v4.i2.pp333-340.

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<em>In this paper floating gate MOS (FGMOS) along with sleep transistor technique and leakage control transistor (LECTOR) technique has been used to design low power SRAM cell. Detailed investigation on operation, analysis and result comparison of conventional 6T, FGSRAM, FGSLEEPY, FGLECTOR and FGSLEEPY LECTOR has been done. All the simulations are done in Cadence Virtuoso environment on 45 nm standard CMOS technology with 1 V power supply voltage. Simulation results show that FGSLEEPY LECTOR SRAM cell consumes very low power and achieves high stability compared to conventional FGSRAM Cell</em>

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Wu, Q. X., and Z. X. Yang. "Novel Undrained Servomechanism in Discrete-Element Modeling and Its Application in Multidirectional Cyclic Shearing Simulations." Journal of Engineering Mechanics 147, no. 3 (March 2021): 04020155. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001896.

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Ling, Hoe I., Songtao Yang, Dov Leshchinsky, Huabei Liu, and Christopher Burke. "Finite-Element Simulations of Full-Scale Modular-Block Reinforced Soil Retaining Walls under Earthquake Loading." Journal of Engineering Mechanics 136, no. 5 (May 2010): 653–61. http://dx.doi.org/10.1061/(asce)em.1943-7889.0000108.

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Jolley, Craig C., Stephen A. Wells, Petra Fromme, and M. F. Thorpe. "Fitting Low-Resolution Cryo-EM Maps of Proteins Using Constrained Geometric Simulations." Biophysical Journal 94, no. 5 (March 2008): 1613–21. http://dx.doi.org/10.1529/biophysj.107.115949.

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Raffo, Antonio, Valeria Vadala, Hiroshi Yamamoto, Ken Kikuchi, Gianni Bosi, Norihiko Ui, Kazutaka Inoue, and Giorgio Vannini. "A New Modeling Technique for Microwave Multicell Transistors Based on EM Simulations." IEEE Transactions on Microwave Theory and Techniques 68, no. 7 (July 2020): 3100–3110. http://dx.doi.org/10.1109/tmtt.2019.2961078.

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Ren, Qiang, Qingtao Sun, Luis Tobon, Qiwei Zhan, and Qing Huo Liu. "EB Scheme-Based Hybrid SE-FE DGTD Method for Multiscale EM Simulations." IEEE Transactions on Antennas and Propagation 64, no. 9 (September 2016): 4088–91. http://dx.doi.org/10.1109/tap.2016.2578308.

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