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Статті в журналах з теми "Combined model of electrothermal processes"

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Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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1

Smith, Brian, and Cristina Amon. "Simultaneous Electrothermal Test Method for Pyroelectric Microsensors." Journal of Electronic Packaging 129, no. 4 (August 19, 2007): 504–11. http://dx.doi.org/10.1115/1.2804101.

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Pyroelectric film materials, including polyvinylidene fluoride (PVDF) and its copolymers (e.g., P(VDF/trifluoroethylene)), are attractive candidates for low-cost infrared detection and imaging applications due to their compatibility with complementary metal-oxide semiconductor processing and inexpensive packaging requirements compared to semiconductor-based detectors. The pyroelectric coefficient (p) describes the material’s electric response to a change in sensor temperature and is the main contributor to the sensitivity and detectivity of the system. However, this value can vary greatly with film fabrication and poling processes, and its measurement is often highly coupled to the material’s thermal diffusivity. This paper describes a new approach to film characterization that combines the popular “3-omega” technique for thermal characterization with a modified version of the laser intensity modulation method for determining the film’s pyroelectric coefficient. The new method is capable of simultaneously measuring film conductivity, diffusivity, and pyroelectric coefficient. It could increase the accuracy of the pyroelectric measurements by providing in situ thermal data to the electrical model instead of relying on published values or thermal measurements of a different sample. We also present a fabrication process that can be used to pole and measure a variety of pyroelectric materials and a mathematical framework to study the thermal phenomena of the setup. The thermal model is used to highlight the methodology’s sensitivity to uncertainties in the geometric and material property values of the layers surrounding the pyroelectric film.

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2

Zhukov, Anatoly. "Strategic approaches of combined electrothermal processing of coal and carbonate mineral raw materials for obtainment of highly efficient synthetic energy carriers and non-fuel products." E3S Web of Conferences 56 (2018): 03017. http://dx.doi.org/10.1051/e3sconf/20185603017.

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Coal gasification and the production of gaseous fuels include three principal directions related to the production of fuel gas: 1) composition and heat capacity of the produced gas; 2) gas generator structures; 3) characteristic properties of the obtained alternative product - low CO content and gas toxicity, which allow making full use of this gas for domestic purposes. In industrial processes of coal conversion, the following combined technologies are used most often: - semi-coking + gasification of fixed ash (low-temperature coke); - semi-coking + hydrogenation of liquid product (tar); - gasification + synthesis of high molecular weight hydrocarbons from the produced SYN gas (СО+Н) (Fischer-Tropsch synthesis). The choice of the layout for obtaining SLF (synthetic liquid fuel) can be based on specific conditions, the cost and quality of coal, energy supply, market conditions. The products obtained in the process of gasification and hydrogenation of coals pollute the atmosphere much less than the coal burned in electrical power plants. When implementing the organizational and technological model of innovative production, the first stage includes the following combined approaches for the processing of mineral raw materials and new products: 1. processing of carbonic mineral raw materials: calcium carbide, carbon dioxide (in a gaseous, liquid or solid state); 2. acetylene, plant growth regulators (PGRs), plant protection products (TAKAR). The second stage includes fuel and non-fuel products: 1. synthetic ethyl alcohol (ethanol), antifreeze, ethylene glycol, dichloroethane, synthetic drying oils, acetone, etc .; 2. carbamide (urea), ammonia, nitrogen in gaseous and liquid states, methanol, gasoline, etc.

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3

Simeiko, K. V. "DEVELOPMENT AND VERIFICATION OF APPROPRIATENESS FOR MATHEMATICAL MODEL OF HEAT BALANCE OF ELECTROTHERMAL FLUIDIZED BED REACTOR." Thermophysics and Thermal Power Engineering 41, no. 2 (December 3, 2018): 35–40. http://dx.doi.org/10.31472/ttpe.2.2019.5.

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Supply of heat through combustion of organic fuel is impossible or economically unviable for the raw of high temperature processes due to it’s technological peculiarities. Some of these processes can be carried out in electrothermal fluidized bed reactors. Development of appropriate mathematical model for heat balance will allow prognostication of capacity needed to carry out specific process and improvement of electrothermal fluidized bed reactor. During the development of mathematical model methods of heat-mass exchange theory were applied. Verification of appropriateness for mathematical model was carried out through comparison of experimental results and calculated values of the amount of heat needed to perform the process of methane pyrolysis in electrothermal fluidized bed and coefficient of thermal efficiency of electrothermal fluidized bed reactor. Comparison with real thermochemical process in electrothermal fluidized bed reactor confirms the appropriateness of mathematical model. Average deviation of mathematical model of heat balance and coefficient of thermal efficiency from obtained experimental values is 5…7 % and 6…9 % respectively. Proposed mathematical model can be applied in design of electrothermal fluidized bed reactors.

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4

Vorobiov, L. I., R. V. Serhiienko, Z. A. Burova, and O. A. Nazarenko. "THERMAL PROCESSES MODELING IN QUASI-DIFFERENTIAL CALORIMETER." Industrial Heat Engineering 39, no. 4 (September 28, 2017): 81–87. http://dx.doi.org/10.31472/ihe.4.2017.12.

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The model of the quasi-differential calorimetric system based on the electrothermal analogy method is proposed. Using the model, the dynamics of average temperatures and heat flow changes in the system elements, the temperature perturbations and the technological parameters spread influences on the measurement error are researched.

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5

Górecki, Krzysztof, and Krzysztof Górski. "SPICE-Aided Compact Electrothermal Model of Impulse Transformers." Applied Sciences 11, no. 19 (September 24, 2021): 8894. http://dx.doi.org/10.3390/app11198894.

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This article proposes a new form of compact electrothermal model of impulse transformers. The proposed model is dedicated for use with SPICE and it is formulated in the network form. It simultaneously takes into account electrical, thermal, and magnetic phenomena occurring in the considered device. Nonlinearity of the core magnetization characteristics and nonlinearity of the heat transfer efficiency are taken into account in this model. The form of the proposed model is shown. Equations of the presented model are given. Experimental verification of the proposed model is performed for selected impulse transformers. Selected results of the performed investigations are presented.

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6

Batrashov, Andrey Borisovich, Alexander Viktorovich Paranin, and Konstantin Gennadyevich Shumakov. "Improvement of mathematical model for calculation of electrothermal processes in a DC catenary suspension." Transport of the Urals, no. 1 (2019): 90–96. http://dx.doi.org/10.20291/1815-9400-2019-1-90-96.

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7

Simeiko, K. V., and M. A. Sidorenko. "REACTOR’S THERMOPHYSICAL CHARACTERISTICS WITH AN ELECTROTHERMAL FLUIDIZED BED AND A COMBINED HEATING METHOD." Energy Technologies & Resource Saving, no. 3 (September 14, 2018): 59–66. http://dx.doi.org/10.33070/etars.3.2018.07.

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To improve the technological features and efficiency of high-temperature processing of the dielectric materials, a reactor design with the electrothermal fluidized bed with a combined heating method was developed at the Institute of Gas of the National Academy of Sciences of Ukraine. The main purpose of this reactor is the process of applying a pyrocarbon coating to quartz sand. The principle-technological scheme of the process is given. Subsequently, quartz sand coated with pyrolytic carbon will be used to produce pure silicon carbide. The authors developed a methodology for calculating the heat balance, which allows estimating the efficiency of the reactor. A method for calculating similarity criteria was chosen for the possibility of comparing the efficiency of heat exchange in a developed reactor with other machines for thermochemical processes. A description of the heat exchange between the fluidized bed and the electrode is proposed. After further experiments, it willbe possible to make final conclusions regarding improving the technological features andincreasing the efficiency of the process of applying a pyrolytic coating to quartz sand, andalso to check the adequacy of the calculation methods. After further experiments, it will bepossible to make final conclusions about improving the technological features and increasing the efficiency of the process of applying a pyrolytic coating to quartz sand. Also, it will allow to check the adequacy of the calculation methods. Bibl. 17, Fig. 2.

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8

Ge, Ji, Yuxiong Cao, Danyu Wu, YongBo Su, Zhi Jin, and Xinyu Liu. "A Combined Model With Electrothermal Coupling and Electromagnetic Simulation for Microwave Multifinger InP-Based DHBTs." IEEE Transactions on Electron Devices 59, no. 3 (March 2012): 673–79. http://dx.doi.org/10.1109/ted.2011.2177987.

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9

Gimsa, Jan, Marco Stubbe, and Ulrike Gimsa. "A short tutorial contribution to impedance and AC-electrokinetic characterization and manipulation of cells and media: Are electric methods more versatile than acoustic and laser methods?" Journal of Electrical Bioimpedance 5, no. 1 (August 8, 2019): 74–91. http://dx.doi.org/10.5617/jeb.557.

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Abstract Lab-on-chip systems (LOCs) can be used as in vitro systems for cell culture or manipulation in order to analyze or monitor physiological cell parameters. LOCs may combine microfluidic structures with integrated elements such as piezo-transducers, optical tweezers or electrodes for AC-electrokinetic cell and media manipulations. The wide frequency band (<1 kHz to >1 GHz) usable for AC-electrokinetic manipulation and characterization permits avoiding electrochemical electrode processes, undesired cell damage, and provides a choice between different polarization effects that permit a high electric contrast between the cells and the external medium as well as the differentiation between cellular subpopulations according to a variety of parameters. It has been shown that structural polarization effects do not only determine the impedance of cell suspensions and the force effects in AC-electrokinetics but can also be used for the manipulation of media with inhomogeneous temperature distributions. This manuscript considers the interrelations of the impedance of suspensions of cells and AC-electrokinetic single cell effects, such as electroorientation, electrodeformation, dielectrophoresis, electrorotation, and travelling wave (TW) dielectrophoresis. Unified models have allowed us to derive new characteristic equations for the impedance of a suspension of spherical cells, TW dielectrophoresis, and TW pumping. A critical review of the working principles of electro-osmotic, TW and electrothermal micropumps shows the superiority of the electrothermal pumps. Finally, examples are shown for LOC elements that can be produced as metallic structures on glass chips, which may form the bottom plate for self-sealing microfluidic systems. The structures can be used for cell characterization and manipulation but also to realize micropumps or sensors for pH, metabolites, cell-adhesion, etc.

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10

Xianhui, He, Gao Chunhua, and Wang Hui. "A Combined Model for Supervisory Control of Continuous Processes." Developments in Chemical Engineering and Mineral Processing 9, no. 1-2 (May 15, 2008): 33–40. http://dx.doi.org/10.1002/apj.5500090205.

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11

Artyukh, L. Yu, A. T. Luk'yanov, and S. E. Nysanbaeva. "Mathematical model of the combined polymerization and crystallization processes." Combustion, Explosion, and Shock Waves 21, no. 6 (November 1985): 703–7. http://dx.doi.org/10.1007/bf01463675.

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12

NAKATSUGAWA, M., M. ANDERSON, and M. L. KAWAS. "A simplified climate model with combined atmospheric-hydrological processes." Hydrological Sciences Journal 41, no. 6 (December 1996): 915–38. http://dx.doi.org/10.1080/02626669609491559.

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13

Morozov, Dmitrij I. ,. "MODEL OF ELECTROTHERMAL PROCESSES IN AN INDUCTION PLANT FOR ZONE HEATING OF A MOVING FERROMAGNETIC BILLET." ELECTRICAL AND COMPUTER SYSTEMS 25, no. 101 (May 10, 2017): 245–52. http://dx.doi.org/10.15276/eltecs.25.101.2017.29.

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14

Loeb, A., and Z. Kaplan. "A theoretical model for the physical processes in the confined high pressure discharges of electrothermal launchers." IEEE Transactions on Magnetics 25, no. 1 (1989): 342–46. http://dx.doi.org/10.1109/20.22561.

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15

Hasen, Saba S., and Ahmed M. Abdulhadi. "Analytical Study of Soret and Dufour effect in the Electro-osmotic peristaltic flow of Rabinowitsch fluid model." Ibn AL- Haitham Journal For Pure and Applied Sciences 34, no. 2 (April 20, 2021): 70–86. http://dx.doi.org/10.30526/34.2.2629.

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The present paper concerned with study the of combined electro-osmotic peristaltic transport with heat and mass transfer which is represented by the Soret and Dufour phenomenon with the presence of the Joule electrothermal heating through a microchannel occupy by Rabinowitsch fluid. The unsteady two-dimensional governing equations for flow with energy and concentration conservation have been formed in a Cartesian coordinate system and the lubrication theory is applied to modify the relevant equations to the problem. The Debye-Hukel linearization approximation is utilizing to modify the electrohydrodynamics problem. The expressions for the axial velocity, the temperature profile, the concentration profile, and the volumetric flow rate are obtained analytically to gain exact solutions, while the numerical integration is used to analyze the pressure rise. The attitude of the Helmholtz-Smoluchowski velocity, the electro-osmotic parameter, the Joule electrothermal heating, the Dufour number, the Soret number, is studied and graphically analyzed. It is showed that the presence of the electric field increased the velocity of the fluid and pressure rise, and it is revealed that the temperature and concentration profile congregate in the center of the channel with increase in the Soret and Dufour number.

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16

Sciberras, Thomas, Marija Demicoli, Ivan Grech, Bertram Mallia, Pierluigi Mollicone, and Nicholas Sammut. "Coupled Finite Element-Finite Volume Multi-Physics Analysis of MEMS Electrothermal Actuators." Micromachines 13, no. 1 (December 22, 2021): 8. http://dx.doi.org/10.3390/mi13010008.

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Microelectromechanical systems (MEMS) are the instruments of choice for high-precision manipulation and sensing processes at the microscale. They are, therefore, a subject of interest in many leading industrial and academic research sectors owing to their superior potential in applications requiring extreme precision, as well as in their use as a scalable device. Certain applications tend to require a MEMS device to function with low operational temperatures, as well as within fully immersed conditions in various media and with different flow parameters. This study made use of a V-shaped electrothermal actuator to demonstrate a novel, state-of-the-art numerical methodology with a two-way coupled analysis. This methodology included the effects of fluid–structure interaction between the MEMS device and its surrounding fluid and may be used by MEMS design engineers and analysts at the design stages of their devices for a more robust product. Throughout this study, a thermal–electric finite element model was strongly coupled to a finite volume model to incorporate the spatially varying cooling effects of the surrounding fluid (still air) onto the V-shaped electrothermal device during steady-state operation. The methodology was compared to already established and accepted analysis methods for MEMS electrothermal actuators in still air. The maximum device temperatures for input voltages ranging from 0 V to 10 V were assessed. During the postprocessing routine of the two-way electrothermal actuator coupled analysis, a spatially-varying heat transfer coefficient was evident, the magnitude of which was orders of magnitude larger than what is typically applied to macro-objects operating in similar environmental conditions. The latter phenomenon was correlated with similar findings in the literature.

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17

Ninness, B. "On the CRLB for Combined Model and Model-Order Estimation of Stationary Stochastic Processes." IEEE Signal Processing Letters 11, no. 2 (February 2004): 293–96. http://dx.doi.org/10.1109/lsp.2003.821752.

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18

Lee, Kwang S., In-Shik Chin, Hyuk J. Lee, and Jay H. Lee. "Model predictive control technique combined with iterative learning for batch processes." AIChE Journal 45, no. 10 (October 1999): 2175–87. http://dx.doi.org/10.1002/aic.690451016.

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19

Alex, J., S. G. E. Rönner-Holm, M. Hunze, and N. C. Holm. "A combined hydraulic and biological SBR model." Water Science and Technology 64, no. 5 (September 1, 2011): 1025–31. http://dx.doi.org/10.2166/wst.2011.472.

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A sequencing batch reactor (SBR) model was developed consisting of six continuous stirred tank reactors which describe the hydraulic flow patterns occurring in different SBR phases. The model was developed using the results of computational fluid dynamics (CFD) simulation studies of an SBR reactor under a selection of dynamic operational phases. Based on the CFD results, the model structure was refined and a simplified ‘driver’ model to allow one to mimic the flow pattern driven by the external operational conditions (influent, aeration, mixing) was derived. The resulting model allows the modeling of biological processes, settlement and hydraulic conditions of cylindrical SBRs.

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20

Effebi, K. R., H. Jupsin, C. Keffala, and J. L. Vasel. "A model for anaerobic ponds combining settling and biological processes." Water Science and Technology 67, no. 12 (June 1, 2013): 2663–69. http://dx.doi.org/10.2166/wst.2013.152.

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This work presents an approach to an anaerobic pond model by combining the stoichiometry of the hydrolysis and acidogenic processes of the main constituents of wastewater, i.e. carbohydrates, proteins, and lipids, grouped as a ‘combined substrate’ with a previously published settling model (see ‘Suspended solids settling and half removal time in stabilization ponds (Tunisia)’ by Effebi et al. (2011)). This approach includes biomass production. Coupling the kinetics and stoichiometry of the previous processes with the usual methanogenic model, we developed an anaerobic pond model. This paper gives the stoichiometry of the different chemical reactions that occur during the degradation of a conventional influent (corresponding to what we define as a ‘combined substrate’) of domestic wastewater and the model's first results.

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21

Jaluria, Yogesh. "Combined experimental and numerical approach to model, design and optimize thermal processes." International Journal of Computational Methods and Experimental Measurements 6, no. 4 (November 3, 2017): 625–34. http://dx.doi.org/10.2495/cmem-v6-n4-625-634.

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22

Schaarup-Jensen, K., and T. Hvitved-Jacobsen. "Dissolved Oxygen Stream Model for Combined Sewer Overflows." Water Science and Technology 22, no. 10-11 (October 1, 1990): 137–46. http://dx.doi.org/10.2166/wst.1990.0298.

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Dissolved oxygen (DO) depletion in receiving streams during combined sewer overflows (CSO) is aphenomenon which comprises dry weather processes, including photosynthesis, and wet weather impacts. During a CSO event a distinction between immediate and delayed DO consumption in the stream caused by biodegradation of soluble and particulate organics, respectively, is made. Two DO models have been developed in order to simulate the combined dry weather and wet weather effects. The first one is a simplified model based on the concept of an extended Streeter-Phelps equation and the second one is an advanced model, which is made from two integrated parts a hydro dynamic and a transport-dispersion model. The structure of the two models is described and model results are compared and evaluated.

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23

Amar, Abdelhamid, Bouchaïb Radi, and Hami El Abdelkhalak. "Electrothermal Reliability of the High Electron Mobility Transistor (HEMT)." Applied Sciences 11, no. 22 (November 13, 2021): 10720. http://dx.doi.org/10.3390/app112210720.

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The main objective of our paper is to propose an approach to studying the mechatronic system’s reliability through the reliability of their high electron mobility transistors (HEMT). The operating temperature is one of the parameters that influences the characteristics of the transistor, especially the electron mobility that represents an advantage over other transistor’s families. Several factors can influence this temperature. Thanks to thermal modeling, it is possible to determine the factors representing a great impact on the operating temperature, such as the power dissipation at the active area of the transistor and the reference temperature above the substrate. In our reliability study, these analytical methods, such as First and Second Order Reliability Methods (FORM and SORM, respectively), were used to analyze the HEMT reliability. Thanks to the coupling between two models—the reliability model coded on Matlab and the thermal modeling with Comsol multiphysics software—the reliability index and the failure probability of the studied system were evaluated.

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24

Dursun, Mehtap, and Nazli Goker. "Fuel Provider Evaluation Using a Combined Decision Aid Model." MATEC Web of Conferences 292 (2019): 01019. http://dx.doi.org/10.1051/matecconf/201929201019.

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Energy is a basic need for achieving quality of life and the level of welfare. Chemical or nuclear energy are released as heat in the wake of a reaction between fuel and other substances. Heat is used for warming, cooking, or industrial processes. This paper presents an integrated multiple criteria decision making framework for fuel provider selection in food industry. Evaluation factors are named as lead time, reliability, sustainability, cost, service quality, location and warranties. To demonstrate the robustness of the application, a numerical illustration is provided by conducting a case study in food industry of Turkey.

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25

van Schagen, Kim, Luuk Rietveld, Alex Veersma, and Robert Babuška. "Model-based pH monitor for sensor assessment." Water Science and Technology 60, no. 3 (July 1, 2009): 709–15. http://dx.doi.org/10.2166/wst.2009.353.

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Owing to the nature of the treatment processes, monitoring the processes based on individual online measurements is difficult or even impossible. However, the measurements (online and laboratory) can be combined with a priori process knowledge, using mathematical models, to objectively monitor the treatment processes and measurement devices. The pH measurement is a commonly used measurement at different stages in the drinking water treatment plant, although it is a unreliable instrument, requiring significant maintenance. It is shown that, using a grey-box model, it is possible to assess the measurement devices effectively, even if detailed information of the specific processes is unknown.

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26

Sun, Jian, Lingwei Lu, Binliang Lin, and Lu Liu. "Processes of dike-break induced flows: A combined experimental and numerical model study." International Journal of Sediment Research 32, no. 4 (December 2017): 465–71. http://dx.doi.org/10.1016/j.ijsrc.2017.09.002.

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27

Knoth, Oswald. "A parcel model for the combined treatment of microphysical and multiphase chemical processes." Atmospheric Environment 39, no. 23-24 (July 2005): 4331–40. http://dx.doi.org/10.1016/j.atmosenv.2005.02.037.

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28

Robson, Dominic T., Andreas C. W. Baas, and Alessia Annibale. "A combined model of aggregation, fragmentation, and exchange processes: insights from analytical calculations." Journal of Statistical Mechanics: Theory and Experiment 2021, no. 5 (May 1, 2021): 053203. http://dx.doi.org/10.1088/1742-5468/abfa1d.

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29

Wang, Lei, Si-Di Gong, Jing Wen, and Ci Hui Yang. "An Improved Electrical Switching and Phase-Transition Model for Scanning Probe Phase-Change Memory." Journal of Nanomaterials 2016 (2016): 1–5. http://dx.doi.org/10.1155/2016/8078165.

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Scanning probe phase-change memory (SPPCM) has been widely considered as one of the most promising candidates for next-generation data storage devices due to its fast switching time, low power consumption, and potential for ultra-high density. Development of a comprehensive model able to accurately describe all the physical processes involved in SPPCM operations is therefore vital to provide researchers with an effective route for device optimization. In this paper, we introduce a pseudo-three-dimensional model to simulate the electrothermal and phase-transition phenomena observed during the SPPCM writing process by simultaneously solving Laplace’s equation to model the electrical process, the classical heat transfer equation, and a rate equation to model phase transitions. The crystalline bit region of a typical probe system and the resulting current-voltage curve obtained from simulations of the writing process showed good agreement with experimental results obtained under an equivalent configuration, demonstrating the validity of the proposed model.

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30

Shcherba, A. A., A. D. Podoltsev, I. M. Kucheriava, V. M. Zolotarev, and R. V. Bilianin. "TWO APPROACHES TO THE COMPUTATION OF ELECTROTHERMAL PROCESSES AT INDUCTION HEATING OF MOVING INGOTS – BY FIELD THEORY AND THERMAL CIRCUIT THEORY." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 59 (September 20, 2021): 5–10. http://dx.doi.org/10.15407/publishing2021.59.005.

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The model for the computation of thermal processes in induction heating installations with moving ingots is developed using equivalent thermal circuits. The controlled current sources as additional elements in the model are used to take into account the convective heat transfer along the moving ingot. The model is implemented in the program Matlab/Simulink and makes it possible to determine the temperature distribution along the ingot under steady-state heating conditions. The results are compared with data obtained by the alternative method which is based on the electromagnetic and thermal field theory and realized in the Comsol program. As shown the computational results by two methods concerning the temperature distribution along the ingot are in good agreement. The existing advantages and shortcomings of the used approaches are discussed. Ref. 8, fig. 3, table.

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31

Shcherba, A. A., O. D. Podoltsev, Y. V. Peretiatko, V. M. Zolotarov, and R. V. Bilianin. "CALCULATION OF ELECTROTHERMAL PROCESSES IN THE INDUCTION CHANNEL FURNACE IN THE STEADY-STATE OPERATION BASED ON THE THEORY OF THERMAL CIRCUITS." Praci Institutu elektrodinamiki Nacionalanoi akademii nauk Ukraini 2021, no. 60 (December 10, 2021): 5–11. http://dx.doi.org/10.15407/publishing2021.60.005.

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Based on the theory of thermal circuits, a computer model of an induction channel furnace has been developed, which is used to obtain industrial copper wire rods in the mode of continuous casting. The model allows calculating the established electrothermal processes considering the flows of cold and molten metal in its core. In the developed thermal model, it is proposed to consider the convection fluxes of heat in the metal using controlled current sources. The temperature distribution in the active zone of the channel furnace is calculated, and the influence of the mass flow of metal at the inlet and outlet of the furnace on the non-uniformity of temperature distribution in the active zone is shown. The obtained results allow determining the required electric power of the furnace at different values of the flow rate of the metal that moves continuously through its core while heating to a given temperature. The developed model is relatively easy to implement, using the Matlab/Simulink package, and allows online to estimate the melt temperature in different zones depending on the electric power consumed by the furnace and the metal consumption at the outlet of the furnace, as well as to determine rational modes of its operation. Ref. 7, fig. 4.

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Baseri, Hamid, and Moosa Belali-Owsia. "A novel hybrid ICA-ANFIS model for prediction of manufacturing processes performance." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 231, no. 2 (August 3, 2016): 181–90. http://dx.doi.org/10.1177/0954408915585256.

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In order to reduce the manufacturing process variability and improve the production yield, it is important to predict the performance of manufacturing process. The adaptive neuro-fuzzy inference system (ANFIS) is a powerful network which can predict the output parameters of manufacturing process. However, design of ANFIS needs trial and errors to select the best structure. In this study, an imperialistic competitive algorithm has been used to determine the ANFIS architecture to reach minimum values of the prediction error. In order to evaluate the performance of this combined method, two illustrative examples of manufacturing processes have been used. Results indicated that the combined method has superiority in prediction of output, rather than previous developed ANFIS models and so it can be applied for modeling of the other manufacturing processes.

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33

Lian, Ruiqing, Yiran You, Yong Li, and Shiwei Su. "GENERATION-LOAD-STORAGE COOPERATIVE OPTIMIZATION SCHEDULING OF COMBINED HEAT AND POWER SYSTEM CONSIDERING WIND POWER UNCERTAINTY AND DEMAND RESPONSE." Tekhnichna Elektrodynamika 2021, no. 6 (October 21, 2021): 41–50. http://dx.doi.org/10.15407/techned2021.06.041.

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The problem of wind power abandonment in the north areas of China is serious, which is mainly caused by the uncertainty of wind power and the "thermoelectric coupling" characteristics of cogeneration units. Aiming at this problem, this paper establishes the optimal scheduling model of generation-load-storage coordination in the electrothermal joint system with the goal of minimizing the amount of wind power discarded and the total scheduling cost of the system. Firstly, the responsive electrical and thermal loads on the demand side are divided into three types according to their types, namely, translatable, transferrable and reducible, and the demand response models are constructed to improve the fineness of the optimization on the demand side. Then, the scenario method is used to solve the uncertainty problem of wind power. Meanwhile, the influence of the energy storage side on system scheduling is considered. Finally, the results based on examples verify the effectiveness of the proposed model in promoting the absorptive of wind power and improving the overall economic benefit of the system. References 23, figures 8, table 1.

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Movchan, A. A. "Combined model of phase-structural deformation of shape memory alloys." Deformation and Fracture of Materials, no. 11 (November 2020): 2–10. http://dx.doi.org/10.31044/1814-4632-2020-11-2-10.

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A combined model of inelastic deformation of shape-memory alloys for phase and structural transformations is proposed, taking into account the fundamental difference between these two mechanisms and the influence of the first mechanism on the second. In contrast to the known analogs, the model allows for non-monotonic loading processes to exceed the long arc of phase-structural deformation (an analogue of the Odqvist parameter in the theory of plasticity) of the intensity of crystallographic deformation of the phase transition.

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Steinstraeter, Matthias, Tobias Heinrich, and Markus Lienkamp. "Effect of Low Temperature on Electric Vehicle Range." World Electric Vehicle Journal 12, no. 3 (August 10, 2021): 115. http://dx.doi.org/10.3390/wevj12030115.

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A significant disadvantage of battery electric vehicles compared to vehicles with internal combustion engines is their sharply decreased driving range at low temperatures. Two factors are primarily responsible for this decreased range. On the one hand, the energy demand of cabin heating needs to be supplied by the vehicle’s battery since less waste heat is available from the powertrain, which could be used to cover heating demands. On the other hand, a limited capability to recuperate at low temperatures serves to protect the battery from accelerated aging, which ultimately leads to less energy regeneration. This paper analyzes the impact of both factors separately on a battery electric vehicle’s driving range. Additionally, this paper provides technical requirements for the implementation of an electrothermal recuperation system. Such a system has the potential to reduce the impact of both abovementioned factors on driving range by enabling the direct usage of regeneratable energy for heating when battery charging is limited under cold conditions. The presented analysis is based on BMW i3 and Tesla Model 3 datasets, which combined cover more than 125 trips in and around Munich at different ambient conditions. The results show that the range can decrease by up to 31.9% due to heating and by up to 21.7% due to limited recuperation, which gives a combined maximum range decrease of approximately 50% under cold conditions. Additionally, it was found that a heater with a short reaction time in the lower millisecond range and a power capability of 20 kW would be sufficient for an electrothermal recuperation system to enable the utilization of unused regenerative braking potentials directly for heating.

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36

Rayapati, Narayana P., Mahesh V. Panchagnula, and John Peddieson. "APPLICATION OF POPULATION BALANCE MODEL TO COMBINED ATOMIZATION AND EVAPORATION PROCESSES IN DENSE SPRAYS." Atomization and Sprays 23, no. 6 (2013): 505–23. http://dx.doi.org/10.1615/atomizspr.2013007388.

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NAKATSUGAWA, Makoto, and M. L. KAVVAS. "The Study of Climate Change Using a Simplified Model with Combined Atmospheric-Hydrologic Processes." PROCEEDINGS OF HYDRAULIC ENGINEERING 36 (1992): 513–20. http://dx.doi.org/10.2208/prohe.36.513.

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38

Naryongo, Raphael, Philip Ngare, and Anthony Waititu. "European Option Pricing under Wishart Processes." Journal of Mathematics 2021 (July 10, 2021): 1–24. http://dx.doi.org/10.1155/2021/7411885.

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This study deals with a single risky asset pricing model whose volatility is described by Wishart affine processes. This multifactor model with two dependency matrices describing the correlation between the asset dynamic and Wishart processes makes it more flexible enough to fit the market data for short or long maturities. The aim of the study is to derive and solve the call option pricing problem under the double Wishart stochastic volatility model. The Fourier transform techniques combined with perturbation methods are employed in order to price the European call options. The numerical illustrations on pricing predictions show similar behavior of price movements under the double Wishart model with respect to the market price.

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39

Horner, Mark W., and Morton E. O'Kelly. "A Combined Cluster and Interaction Model: The Hierarchical Assignment Problem." Geographical Analysis 37, no. 3 (July 2005): 315–35. http://dx.doi.org/10.1111/j.1538-4632.2005.00567.x.

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40

Ogassawara, Jéssica Fernanda, Samuel Beskow, Mauricio Dai Prá, Maíra Martim de Moura, Marcelle Martins Vargas, Venkatesh Mohan Merwade, and Carlos Rogério de Mello. "Applicability of geomorphological approaches combined with the modified Clark’s model for flood hydrograph estimation." CATENA 213 (June 2022): 106200. http://dx.doi.org/10.1016/j.catena.2022.106200.

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41

Lazaridis, M., A. Spyridaki, S. Solberg, J. Smolík, V. Zdímal, K. Eleftheriadis, V. Aleksanropoulou, O. Hov, and P. G. Georgopoulos. "Mesoscale modeling of combined aerosol and photo-oxidant processes in the Eastern Mediterranean." Atmospheric Chemistry and Physics 5, no. 4 (March 21, 2005): 927–40. http://dx.doi.org/10.5194/acp-5-927-2005.

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Abstract. Particulate matter and photo-oxidant processes in the Eastern Mediterranean have been studied using the UAM-AERO mesoscale air quality model in conjunction with the NILU-CTM regional model. Meteorological data were obtained from the RAMS prognostic meteorological model. The modeling domain includes the eastern Mediterranean area between the Greek mainland and the island of Crete. The modeling system is applied to study the atmospheric processes in three periods, i.e. 13–16 July 2000, 26–30 July 2000 and 7–14 January 2001. The spatial and temporal distributions of both gaseous and particulate matter pollutants have been extensively studied together with the identification of major emission sources in the area. The modeling results were compared with field data obtained in the same period. The objective of the current modeling work was mainly to apply the UAM-AERO mesoscale model in the eastern Mediterranean in order to assess the performed field campaigns and determine that the applied mesoscale model is fit for this purpose. Comparison of the modeling results with measured data was performed for a number of gaseous and aerosol species. The UAM-AERO model underestimates the PM10 measured concentrations during summer and winter campaigns. Discrepancies between modeled and measured data are attributed to unresolved particulate matter emissions. Particulate matter in the area is mainly composed by sulphate, sea salt and crustal materials, and with significant amounts of nitrate, ammonium and organics. During winter the particulate matter and oxidant concentrations were lower than the summer values.

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42

Shetty, Keerthi S., and Annappa B. "Transcriptional processes: Models and inference." Journal of Bioinformatics and Computational Biology 16, no. 05 (October 2018): 1850023. http://dx.doi.org/10.1142/s0219720018500233.

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Many biochemical events involve multistep reactions. One of the most important biological processes that involve multistep reaction is the transcriptional process. Models for multistep reaction necessarily need multiple states and it is a challenge to compute model parameters that best agree with experimental data. Therefore, the aim of this work is to design a multistep promoter model which accurately characterizes transcriptional bursting and is consistent with observed data. To address this issue, we develop a model for promoters with several OFF states and a single ON state using Erlang distribution. To explore the combined effects of model and data, we combine Monte Carlo extension of Expectation Maximization (MCEM) and delay Stochastic Simulation Algorithm (DSSA) and call the resultant algorithm as delay Bursty MCEM. We apply this algorithm to time-series data of endogenous mouse glutaminase promoter to validate the model assumptions and infer the kinetic parameters. Our results show that with multiple OFF states, we are able to infer and produce a model which is more consistent with experimental data. Our results also show that delay Bursty MCEM inference is more efficient.

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43

Benmoussa, Rachid, Charkaoui Abdelkabir, Achraf Abd, and Marouane Hassou. "Capability/maturity based model for logistics processes assessment." International Journal of Productivity and Performance Management 64, no. 1 (January 12, 2015): 28–51. http://dx.doi.org/10.1108/ijppm-08-2012-0084.

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Purpose – The purpose of this paper is to study how a general standardized processes assessment capability/maturity model, such as Capability Maturity Model Integration (CMMI), can be combined to a standardized benchmark of logistics processes best practices, such as FD X50-604, to propose a new approach that evaluates logistics processes capability/maturity. Design/methodology/approach – First, an analysis study of CMMI model and X50-604 standard is performed. In order to prove their coherence, a deep comparative analysis of CMMI and X50-604 practices is conducted. As illustration, the paper focuses on a particular application of this approach to evaluate capability/maturity of distribution logistics activities. An industrial case study that aims the validation of this particular application is finally conducted in a furniture company. Findings – The authors estimate that the paper findings provide an operational guide for industrials to evaluate their distribution processes that is a practical, verifiable, repeatable and extensible to other logistics process areas and an interesting opportunity to evolve the standard FD X50-604 regarding CMMI requirements to assess capability/maturity of logistics processes. Originality/value – In general, the few capability/maturity-driven models analyzed in literature present some limits that do not allow their diffusion in the industrial level, especially in logistics. This study proposes a new approach based on standards that provide an operational guide for industrials to evaluate their distribution processes based on capability/maturity concept.

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44

Lazaridis, M., A. Spyridaki, S. Solberg, J. Smolík, V. Ždímal, K. Eleftheriadis, V. Aleksandropoulou, O. Hov, and P. G. Georgopoulos. "Mesoscale modeling of combined aerosol and photo-oxidant processes in the eastern Mediterranean." Atmospheric Chemistry and Physics Discussions 4, no. 5 (September 21, 2004): 5455–514. http://dx.doi.org/10.5194/acpd-4-5455-2004.

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Анотація:

Abstract. Particulate matter and photo-oxidant processes in the Eastern Mediterranean have been studied using the UAM-AERO mesoscale air quality model in conjunction with the NILU-CTM regional model. Meteorological data were obtained from the RAMS prognostic meteorological model. The modeling domain includes the eastern Mediterranean area between the Greek mainland and the island of Crete. The modeling system is applied to study the atmospheric processes in three periods, i.e. 13–16 July 2000, 26–30 July 2000 and 7–14 January 2001. The spatial and temporal distributions of both gaseous and particulate matter pollutants have been extensively studied together with the identification of major emission sources in the area. The modeling results were compared with field data obtained in the same period. Comparison of the modeling results with measured data was performed for a number of gaseous and aerosol species. The UAM-AERO model underestimates the PM10 measured concentrations during summer but better comparison has been obtained for the winter data.

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45

Vollertsen, Jes, Thorkild Hvitved-Jacobsen, Iain McGregor, and Richard Ashley. "Aerobic microbial transformations of pipe and silt trap sediments from combined sewers." Water Science and Technology 38, no. 10 (November 1, 1998): 249–56. http://dx.doi.org/10.2166/wst.1998.0408.

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A conceptual model for wastewater quality changes during transport in sewers is presented. The model concept includes reaeration and main aerobic and anaerobic microbial processes in water phase and sewer biofilm. Emphasis is on microbial transformations of heterotrophic biomass and soluble and particulate fractions of organic substrate; the inclusion of sulfate respiration in the model concept is outlined. The model concept has been tested in gravity sewers as well as in pressure mains. Oxygen utilization rate measurements of wastewater samples from sewers are used for model calibration. The model is exemplified as a tool for evaluation of wastewater quality changes in an intercepting gravity sewer. The model concept can be used in the design process of sewers taking into account quality aspects. It is recommended to consider sewer processes when addressing functioning of the sewer, wastewater treatment and combined sewer overflow effects.

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46

Jitviriya, Wisanu, Masato Koike, and Eiji Hayashi. "Emotional Model for Robotic System Using a Self-Organizing Map Combined with Markovian Model." Journal of Robotics and Mechatronics 27, no. 5 (October 20, 2015): 563–70. http://dx.doi.org/10.20965/jrm.2015.p0563.

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<div class=""abs_img""> <img src=""[disp_template_path]/JRM/abst-image/00270005/13.jpg"" width=""300"" /> Behavioral/emotional expression system</div> In our research, we have focused on investigating the application of brain-inspired technology by developing a robot with consciousness resembling that of a human being. The goal was to enhance intelligent behavior/emotion, and to facilitate communication between human beings and robots. We sought to increase the robot’s behavioral/emotional intelligence capabilities so that it could distinguish, adapt and react to changes in the environment. In this paper, we present a behavioral/emotional expression system designed to work automatically by two processes. The first is a classification of behavior and emotions by determining the winner node based on Self-Organizing Map (SOM) learning. For the second, we propose a stochastic emotion model based on Markov theory in which the probabilities of emotional state transition are updated with affective factors. Finally, we verified this model with a conscious behavior robot (Conbe-I), and confirmed the effectiveness of the proposed system with the experimental results in a realistic environment. </span>

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47

Stanley, Melinda A., and James E. Maddux. "Cognitive Processes in Health Enhancement: Investigation of a Combined Protection Motivation and Self-Efficacy Model." Basic and Applied Social Psychology 7, no. 2 (June 1986): 101–13. http://dx.doi.org/10.1207/s15324834basp0702_2.

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48

Alliluev, Il’ya Aleksandrovich, Evgenii Mikhailovich Vechkanov, Irina Alekseevna Sorokina, Yuliya Nikolaevna Kalyuzhnaya, and Valerii Valentinovich Vnukov. "Radical Processes and Antioxidant Status Rattus Norvegicus in Combined Effect of Injuries and Model Hyperhomocysteinemia." UNIVERSITY NEWS. NORTH-CAUCASIAN REGION. NATURAL SCIENCES SERIES, no. 3 (2016): 31–35. http://dx.doi.org/10.18522/0321-3005-2016-3-31-35.

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49

Siemssen, Rinnert, and Klaus W. Lange †. "Monitoring two-phase mixing in a 1:7 scale model reactor during combined blowing processes." Steel Research 60, no. 7 (July 1989): 291–300. http://dx.doi.org/10.1002/srin.198901656.

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50

Zuev, A. V., and P. V. Prosuntsov. "Model of the Structure of Fibrous Heat-Insulating Materials for Analyzing Combined Heat Transfer Processes." Journal of Engineering Physics and Thermophysics 87, no. 6 (November 2014): 1374–85. http://dx.doi.org/10.1007/s10891-014-1140-z.

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