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Journal articles on the topic 'Channel modelling'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Luchi, Rossella, Guido Zolezzi, and Marco Tubino. "Modelling mid-channel bars in meandering channels." Earth Surface Processes and Landforms 35, no. 8 (2010): 902–17. http://dx.doi.org/10.1002/esp.1947.

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Wang, Xiaoyu, Xiaohua Wang, Rongkun Jiang, Weijiang Wang, Qu Chen, and Xinghua Wang. "Channel Modelling and Estimation for Shallow Underwater Acoustic OFDM Communication via Simulation Platform." Applied Sciences 9, no. 3 (2019): 447. http://dx.doi.org/10.3390/app9030447.

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The performance of underwater acoustic (UWA) communication is heavily dependent on channel estimation, which is predominantly researched by simulating UWA channels modelled in complex and dynamic underwater environments. In UWA channels modelling, the measurement-based approach provides an accurate method. However, acquirement of environment data and simulation processes are scenario-specific and thus not cost-effective. To overcome such restraints, this article proposes a comprehensive simulation platform that combines UWA channel modelling with orthogonal frequency division multiplexing (OFD

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Bondar, O. I., O. I. Glukhenky, Yu M. Goryslavets, and O. P. Zapadynchuk. "NUMERICAL MODELLING OF INDUCTION CHANNEL FURNACE THERMAL STATE." Tekhnichna Elektrodynamika 2021, no. 3 (2021): 44–49. http://dx.doi.org/10.15407/techned2021.03.044.

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A mathematical model that describes heat and mass transfer processes in an induction channel furnace is presented. Using the example of a two-phase channel furnace with standard form of channels, the influence of the phase angle between the voltages supplying the furnace inductors on the thermal state of the liquid metal is considered. Values of this angle, which provide minimal melt overheating in channels in comparison with furnace bath have been determined. Ways of intensification of heat and mass transfer processes in two-phase channel furnace have been suggested. References 9, figures 4.

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Chatila, Jean G., and Ron D. Townsend. "Modelling floodplain conveyance in compound channel flows." Canadian Journal of Civil Engineering 22, no. 4 (1995): 660–67. http://dx.doi.org/10.1139/l95-078.

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Floodplain conveyance in compound channel flows is examined through applications of the dynamic flow routing model DWOPER to both laboratory and field data sets. Three different approaches regarding the modelling of off-channel storage are considered, namely, the single-channel approach and two interface-plane methods, which artificially separate main channel flows from floodplain flows, using (i) vertical and (ii) diagonal interface planes. The single-channel method, which views composite flow fields as single units without storage, produced significant differences between simulated and obser

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Abida, Habib, and Ronald D. Townsend. "Parameter optimization in modelling unsteady compound channel flows." Canadian Journal of Civil Engineering 19, no. 3 (1992): 441–46. http://dx.doi.org/10.1139/l92-053.

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Optimization methods are used to estimate data for routing floods through open compound channels (main channels with flood plain zones). These data include the irregular channel section geometry and the varying boundary roughness. Differences between simulated and observed stages and discharges are minimized using three optimization algorithms: Powell's method, Rosenbrock's algorithm, and the Nelder and Meade simplex method. Powells' method performed poorly; however, both the Rosenbrock and simplex methods yielded good results. The estimated data using the Rosenbrock and simplex methods were u

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Yang, Yi Huai. "Channel Modelling for WBANs." Applied Mechanics and Materials 246-247 (December 2012): 346–50. http://dx.doi.org/10.4028/www.scientific.net/amm.246-247.346.

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Development of an appropriate propagation channel model is an important step to design wireless body area network (WBAN). Because the human body has different body shapes (male, female and child), different tissues with different permittivity and conductivity (even the same person at the different age), and limbs positions and postures are changing all the time, this made the in-body channel modelling extremely difficult, if not impossible. There are few publications on implant communication channel models compared to wearable WBAN. In this paper, we present a literature survey on radio channe

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Del Galdo, G., M. Haardt, and C. Schneider. "Geometry-based channel modelling of MIMO channels in comparison with channel sounder measurements." Advances in Radio Science 2 (May 27, 2005): 117–26. http://dx.doi.org/10.5194/ars-2-117-2004.

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Abstract. In this paper we propose a flexible geometrybased propagation model for wireless communications developed at Ilmenau University of Technology. The IlmProp comprises a geometrical representation of the environment surrounding the experiment and a precise representation of the transmitting and receiving antennas. The IlmProp is capable of simulating Multi-User MIMO scenarios and includes a complete collection of tools to analyze the synthetic channels. In order to assess the potentials as well as the limits of our channel simulator we reconstruct the scenario encountered in a recent me

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Hu, Xiaojian, Shuai Feng, Jiqiong Liu, Aifeng Yang, Guanxiong Wang, and Hui Xu. "Return Mode Selection and Pricing Strategy for a Dual-Channel Retailer." Discrete Dynamics in Nature and Society 2020 (August 1, 2020): 1–20. http://dx.doi.org/10.1155/2020/5261486.

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With the rapid development of e-commerce and the economy, an increasing number of retailers are adopting a dual-channel retail strategy (DCRS), which allows customers to return unsatisfactory products, provided that their complaints are reasonable, and receive a full refund. This paper studies the pricing strategies of an integrated dual-channel retailer (DCR) when it provides return policies to customers, including original channel return, fixed cross-channel return, and relaxed cross-channel return. The relationship between the DCR’s system performance and channel pricing is impacted by cust

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Hewitt, Ian J. "Modelling distributed and channelized subglacial drainage: the spacing of channels." Journal of Glaciology 57, no. 202 (2011): 302–14. http://dx.doi.org/10.3189/002214311796405951.

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AbstractModels are proposed for channelized and distributed flow of meltwater at the base of an ice sheet. The volumes of both channel and distributed systems evolve according to a competition between processes that open drainage space (e.g. sliding over bedrock, melting of the ice) and processes that close it (e.g. viscous creep of the ice due to a positive effective pressure). Channels are generally predicted to have lower water pressure and therefore capture water from the surrounding regions of distributed flow. There is a natural length scale associated with the distributed system that de

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Weng, Jialai, Xiaoming Tu, Zhihua Lai, Sana Salous, and Jie Zhang. "Indoor Massive MIMO Channel Modelling Using Ray-Launching Simulation." International Journal of Antennas and Propagation 2014 (2014): 1–13. http://dx.doi.org/10.1155/2014/279380.

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Massive multi-input multioutput (MIMO) is a promising technique for the next generation of wireless communication networks. In this paper, we focus on using the ray-launching based channel simulation to model massive MIMO channels. We propose one deterministic model and one statistical model for indoor massive MIMO channels, both based on ray-launching simulation. We further propose a simplified version for each model to improve computational efficiency. We simulate the models in indoor wireless network deployment environments and compare the simulation results with measurements. Analysis and

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Szwast, Maciej, and Zbigniew Szwast. "A Mathematical Model of Membrane Gas Separation with Energy Transfer by Molecules of Gas Flowing in a Channel to Molecules Penetrating this Channel from the Adjacent Channel." Chemical and Process Engineering 36, no. 2 (2015): 151–69. http://dx.doi.org/10.1515/cpe-2015-0012.

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Abstract The paper presents the mathematical modelling of selected isothermal separation processes of gaseous mixtures, taking place in plants using membranes, in particular nonporous polymer membranes. The modelling concerns membrane modules consisting of two channels - the feeding and the permeate channels. Different shapes of the channels cross-section were taken into account. Consideration was given to co-current and counter-current flows, for feeding and permeate streams, respectively, flowing together with the inert gas receiving permeate. In the proposed mathematical model it was consid

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Bhattacharya, Subhajit. "Modelling channel partners’ opinions to achieve value-based relationship." Journal of Indian Business Research 11, no. 3 (2019): 220–43. http://dx.doi.org/10.1108/jibr-04-2017-0037.

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PurposeThe present competitive marketing environment demands effective role of distribution channels to create and develop a value-based infrastructure where companies can easily distribute their products into the consumers’ market. Relationship bonding between the channel partners and the company strengthens marketing efficiencies of the distribution function, which is supported by policies of the companies relating to joint business actions and value sharing. Both the tangible functional value and emotional functionalities play a vital role in the continuous success and the growth of distrib

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Tolj, Ivan, Zeljko Penga, Petar Bosnic, and Gojmir Radica. "Proton Exchange Membrane Fuel Cell Flow Field Configuration: Modelling and Experimental Verification." ECS Transactions 108, no. 7 (2022): 143–51. http://dx.doi.org/10.1149/10807.0143ecst.

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Improper design of flow field channels may lead to water stagnation and flooding and may therefore lead to a poor fuel cell performance. The main purpose of this work is to investigate liquid water formation inside the flow field of the proton exchange membrane (PEM) fuel cell and to find optimal flow field configuration such as: number of channels, channel width to rib ratio and channel depth. To achieve this goal advanced numerical model of PEM fuel cell was developed. Model was simulated in Fluent, using computational fluid dynamics (CFD). Based on the obtained simulation results, graphite

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Sherlock, D., G. Weir, and K. Dodds. "ANALOG RESERVOIR MODELLING OF CHANNEL SANDS." APPEA Journal 45, no. 1 (2005): 439. http://dx.doi.org/10.1071/aj04034.

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This paper outlines the results of analog modelling of a sandy deepwater channel reservoir to gain insight into issues of uncertainty in reservoir simulations and their seismic expression. The project is unique in that it integrates seismic and reservoir engineering research in a controlled laboratory environment. Unlike numerical modelling investigations, this laboratory-based modelling study provides real data that does not rely on assumptions and is, therefore, a useful case study for comparing the actual production and seismic response against numerical predictions.The 1 m2 model comprised

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Chen, Michael J., Yvonne M. Stokes, Peter Buchak, Darren G. Crowdy, and Heike Ebendorff-Heidepriem. "Microstructured optical fibre drawing with active channel pressurisation." Journal of Fluid Mechanics 783 (October 13, 2015): 137–65. http://dx.doi.org/10.1017/jfm.2015.570.

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The use of channel pressurisation in drawing microstructured optical fibres (MOFs) potentially allows for fine control of the internal structure of the fibre. By applying extra pressure inside the channels it is possible to counteract the effect of surface tension which would otherwise act to close the channels in the fibre as it is drawn. This paper extends the modelling approach of Stokes et al. (J. Fluid Mech., vol. 755, 2014, pp. 176–203) to include channel pressurisation. This approach treats the problem as two submodels for the flow, one in the axial direction along the fibre and another

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Long, Zhecheng. "Optical Wireless Systems Channel Modelling." Journal of Computer and Communications 10, no. 03 (2022): 66–85. http://dx.doi.org/10.4236/jcc.2022.103005.

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Wilson, R., S. O'Brien, D. Galaba, and J. Leighton. "Storage channel modelling in simulink." IEEE Transactions on Consumer Electronics 49, no. 1 (2003): 158–67. http://dx.doi.org/10.1109/tce.2003.1205470.

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Jaržemskis, Andrius. "THE MODELLING OF FACTORS DETERMINING THE GOODS AND TRAFFIC FLOWS MOVEMENT IN A LOGISTICAL SYSTEM." TRANSPORT 18, no. 1 (2003): 18–22. http://dx.doi.org/10.3846/16483840.2003.10414058.

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The purpose of this atticle is to model the factors determining the goods traffic along the logistical channels located in various geopolitical regions on the basis of the transport network. The attention is focused on theoretical presumption of logistical channels formation in a logistical system. In this modeling the factors which determine the formation of the goods flow along the subsystems of the entire logistical system from the geopolitical point of view are defined. In this model the competitiveness of a logistical channel is determined by its technological, economical, legal character

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Tolj, Ivan, Zeljko Penga, Petar Bosnic, and Gojmir Radica. "Proton Exchange Membrane Fuel Cell Flow Field Configuration: Modelling and Experimental Verification." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1532. http://dx.doi.org/10.1149/ma2022-01351532mtgabs.

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With climate change crisis the research community is forced to consider other alternatives for energy production. Therefore, renewable energy sources are today considered as the main replacement for fossil fuels in the future. Proton exchange membrane (PEM) fuel cells are gaining more attention as main power sources for powering various vehicles, such as cars, forklifts, golfcarts etc. [1, 2]. European Commission (EC) recognized the importance of the fuel cell and hydrogen technology and their inevitable role in reducing greenhouse gas emission by further encouraging hydrogen fuel cell integra

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Shokirov, B., B. Norkulov, Kh Nishanbaev, M. Khurazbaev, and B. Nazarov. "Computer simulation of channel processes." E3S Web of Conferences 97 (2019): 05012. http://dx.doi.org/10.1051/e3sconf/20199705012.

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The article discusses the results of numerical studies of flow movement with a sharp change in the channel parameters. The numerical study of the flow in the channels and rivers creates the possibility of a multivariate forecast of channel processes, rivers, and requires minimal expenditures. The purpose of the study is to determine the main objectives and directions of research in the area under consideration. A mathematical model and a computer program have been developed that allow solving a wide range of tasks for modelling currents in the channels of various difficulties, taking into acco

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Das, Namita, and Kaushik Chandra Deva Sarma. "Channel Potential Modelling of Surrounded Channel Junction Less Field Effect Transistor." Journal of Nanoelectronics and Optoelectronics 17, no. 2 (2022): 211–17. http://dx.doi.org/10.1166/jno.2022.3186.

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An analytical model for potential in channel region is obtained for a Surrounded channel junction-less field effect transistor. Two dimensional Poisson’s equation has been solved to obtain the mathematical potential modelling. The dependence of channel potential on gate voltage, gate oxide thickness, type of gate dielectric, doping concentration, channel length is shown. The model is fully analytical in nature and suitable for compact modelling. The potential model developed is compared with results obtained from TCAD numerical simulation results.

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Pätzold, Matthias, and Carlos A. Gutierrez. "Modelling and Analysis of Nonstationary Vehicle-to-Infrastructure Channels with Time-Variant Angles of Arrival." Wireless Communications and Mobile Computing 2018 (2018): 1–9. http://dx.doi.org/10.1155/2018/6396173.

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In mobile radio channel modelling, it is generally assumed that the angles of arrival (AOAs) are independent of time. This assumption does not in general agree with real-world channels in which the AOAs vary with the position of a moving receiver. In this paper, we first present a mathematical model for the time-variant AOAs. This model serves as the basis for the development of two nonstationary multipath fading channels models for vehicle-to-infrastructure communications. The statistical properties of both channel models are analysed with emphasis on the time-dependent autocorrelation functi

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Novak, Roman. "Viability of Numerical Full-Wave Techniques in Telecommunication Channel Modelling." Journal of communications software and systems 16, no. 4 (2020): 269–78. http://dx.doi.org/10.24138/jcomss.v16i4.1041.

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In telecommunication channel modelling the wavelength is small compared to the physical features of interest, therefore deterministic ray tracing techniques provide solutions that are more efficient, faster and still within time constraints than current numerical full-wave techniques. Solving fundamental Maxwell&amp;apos;s equations is at the core of computational electrodynamics and best suited for modelling electrical field interactions with physical objects where characteristic dimensions of a computing domain is on the order of a few wavelengths in size. However, extreme communication

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Lotsari, Eliisa, Varyl Thorndycraft, and Petteri Alho. "Prospects and challenges of simulating river channel response to future climate change." Progress in Physical Geography: Earth and Environment 39, no. 4 (2015): 483–513. http://dx.doi.org/10.1177/0309133315578944.

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Due to the predicted impacts of future climate on hydrology, morphological changes to river channels are expected. Quantifying the magnitudes and rates of future channel change is important for sustainable river channel management. To date, reviews of simulation approaches for investigating river channels and the modelling of environmental change impacts on channel form and process have focused on contemporary process or palaeo perspectives. Hence, herein we review numerical modelling approaches available for reach-scale simulation of future river channels and the predicted in-channel hydro- a

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Balroo, Shuaib Ahmed. "Role of Omni Channel Attributes and Perceived Behavioral Control in Omni Channel Selection." Journal of Economics, Management and Trade 29, no. 11 (2023): 90–103. http://dx.doi.org/10.9734/jemt/2023/v29i111165.

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The retailing industry worldwide is transitioning from multi-channel retailing to omni channel retailing. In contrast to multi-channel retailing which provides offerings through different and separate channels, all channels are essentially well integrated in omni channel retailing. In the middle eastern region, the transition from multi-channel to omni channel retailing is rapidly taking place in Saudi Arabia. However, managing channels synergistically for providing seamless customer experience is proving out to be challenging task for omni channel retailers. What omni channel attributes are v

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Yang-jun, WANG, and YIN Tai-ju. "Numerical forward Modelling of River-dominated Deltas." Applied Science and Innovative Research 4, no. 1 (2020): p16. http://dx.doi.org/10.22158/asir.v4n1p16.

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A delta is a type of sedimentary system that is closely related to oil and gas. Shallow-lake delta deposits in the Mesozoic-Cenozoic strata of China are of particular interest. This delta has significant oil and gas reserves that are developed widely. Based on a numerical simulation of the sand body of the shallow-lake delta, this study analyzes the influence of various sediment conditions on the sand-body development. The formation and distribution rules of the sand body are concluded and verified, and the results can effectively guide the exploration and development of oil and gas resources.

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De FABRITIIS, G., J. VILLÀ-FREIXA, and P. V. COVENEY. "MULTISCALE MODELLING OF PERMEATION THROUGH MEMBRANE CHANNELS USING PREGENERATED MOLECULAR DYNAMICS TRAJECTORIES." International Journal of Modern Physics C 18, no. 04 (2007): 511–19. http://dx.doi.org/10.1142/s0129183107010747.

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Permeation of small molecules across membrane channels can be measured by a multiscale computational protocol based on Brownian dynamics and the potential of mean force formalism. In this article we look at ways to compute the potential of mean force by reusing pre-existing molecular dynamics trajectories via a protocol centered on instantaneous forward/reverse transformations. We apply the method to the energetics of water across the narrow channel formed by Gramicidin A and reproduce several features of the energy barrier across the channel albeit at a coarse level of detail due to limits im

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Wang, Jun, Xianxue Cheng, and Shuhua Zhang. "Low Carbon Distribution Channel Coordination with a Capital-Constrained Retailer." Discrete Dynamics in Nature and Society 2018 (August 1, 2018): 1–13. http://dx.doi.org/10.1155/2018/9579348.

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Capital constraints exist in many supply chains. We examine a low carbon distribution channel that consists of a manufacturer and a retailer, in which the retailer is constrained by capital. The retailer can be financed by bank credit from a competitive bank market. A Stackelberg model is developed to analyze the integrated decision-making process of ordering, financing, and emission reduction. By comparing the decentralized and centralized channels, we obtain that the manufacturer’s green technology investment should be linearly proportional to the retailer’s order quantity in both channels.

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Szosland, Janusz. "MODELLING THE STRUCTURAL BARRIER ABILITY OF WOVEN FABRICS." AUTEX Research Journal 3, no. 3 (2003): 102–10. http://dx.doi.org/10.1515/aut-2003-030302.

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Abstract Woven fabrics with their full, systematically arranged and non-stochastic structure, are the subject of increasing interest as barriers to fluids, radiation, micro-particles, and micro-organisms. The structure of woven fabrics, which is characterised by inter-thread channels of predetermined shape and location, is especially important. Some procedures for designing channel shape and methods for sealing barrier woven fabrics are presented.

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Yan, Wei, Youwei Li, Ying Wu, and Mark Palmer. "A Rising E-Channel Tide Lifts All Boats? The Impact of Manufacturer Multichannel Encroachment on Traditional Selling and Leasing." Discrete Dynamics in Nature and Society 2016 (2016): 1–18. http://dx.doi.org/10.1155/2016/2898021.

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Organizing and managing channels of distribution is an important marketing task. Due to the emergence of electronic commerce on the Internet, e-channel distribution systems have been adopted by many manufacturers. However, academic and anecdotal evidence both point to the pressures arising from this new e-channel manufacturing environment. Question marks therefore remain on how the addition of this e-channel affects the traditional marketing strategies of leasing and selling. We set up several two-period dual-channel models in which a manufacturer sells a durable product through both a manufac

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Akinniyi, Akinade Olutayo, Awofolaju Tolulope Tola, and Oladepo Olatunde. "Modelling of Land Mobile Satellite Channel to Counter Channel Outage." International Journal of Distributed and Parallel systems 8, no. 2 (2017): 1–21. http://dx.doi.org/10.5121/ijdps.2017.8201.

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MILNE, J. A., and D. A. SEAR. "Modelling river channel topography using GIS." International Journal of Geographical Information Science 11, no. 5 (1997): 499–519. http://dx.doi.org/10.1080/136588197242275.

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Damgaard, Jesper, Nick Dodd, Lisa Hall, and Tim Chesher. "Morphodynamic modelling of rip channel growth." Coastal Engineering 45, no. 3-4 (2002): 199–221. http://dx.doi.org/10.1016/s0378-3839(02)00034-0.

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Lewis, Rebecca, and Richard Barrett-Jolley. "Modelling Ion Channel Behaviour in Chondrocytes." Biophysical Journal 100, no. 3 (2011): 91a. http://dx.doi.org/10.1016/j.bpj.2010.12.705.

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Burger, Martin. "Inverse problems in ion channel modelling." Inverse Problems 27, no. 8 (2011): 083001. http://dx.doi.org/10.1088/0266-5611/27/8/083001.

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Lucas, H., M. H. Aslami, Farell, and Ferryanto. "Modelling of flow characteristics in the access channel of Bali tourism port using DualSPHysics." IOP Conference Series: Earth and Environmental Science 1324, no. 1 (2024): 012047. http://dx.doi.org/10.1088/1755-1315/1324/1/012047.

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Abstract The access channel is a structure formed as a basin on the seabed. Based on previous studies, excessive sediment accumulation in shipping lanes or access channels carried by ocean floor currents is one of the factors that cause damage to the hull under the ship. Therefore, this study aims to investigate the characteristics of seabed currents that cross the access channel. This research was carried out by modelling the numerical test of the access channel model using the Smoothed Particle Hydrodynamics (SPH) method with DualSPHysics software. The results of this study show the movement

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Miramirkhani, Farshad, and Murat Uysal. "Channel modelling for indoor visible light communications." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190187. http://dx.doi.org/10.1098/rsta.2019.0187.

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Visible light communication (VLC) allows the dual use of light-emitting diodes (LEDs) for wireless communication purposes in addition to their primary purpose of illumination. As in any other communication system, realistic channel modelling is a key for VLC system design, analysis and testing. In this paper, we present a comprehensive survey of indoor VLC channel models. In order to set the background, we start with an overview of infrared (IR) channel modelling, which has received much attention in the past, and highlight the differences between visible and IR optical bands. In the light of

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Pudasaini, S. P., Y. Wang, and K. Hutter. "Modelling debris flows down general channels." Natural Hazards and Earth System Sciences 5, no. 6 (2005): 799–819. http://dx.doi.org/10.5194/nhess-5-799-2005.

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Abstract. This paper is an extension of the single-phase cohesionless dry granular avalanche model over curved and twisted channels proposed by Pudasaini and Hutter (2003). It is a generalisation of the Savage and Hutter (1989, 1991) equations based on simple channel topography to a two-phase fluid-solid mixture of debris material. Important terms emerging from the correct treatment of the kinematic and dynamic boundary condition, and the variable basal topography are systematically taken into account. For vanishing fluid contribution and torsion-free channel topography our new model equations

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Thomas, Ian W., John D. Collinson, and Colin M. Jones. "Depositional Modelling of UK North Sea Alba Field Reservoir." Energy Exploration & Exploitation 10, no. 4-5 (1992): 300–320. http://dx.doi.org/10.1177/014459879201000408.

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The Alba Field is contained within block 16/26 of the Central North Sea of the United Kingdom. This oil field was discovered in 1984 by Chevron UK Ltd with the 16/26–5 well and has been appraised by 16 wells and sidetracks. The field is currently being developed and is scheduled to achieve first production around the end of 1993. A 3-D seismic survey, acquired in 1989, has greatly enhanced delineation of the field. It is a NW-SE trending linear feature approximately 5.25 miles (8.5 kms) in length with adjacent satellite structures. The reservoir sands comprise the Nauchlan Member of the Alba F

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Zhao, Yan-Fei, Yong Wang, and Guo-Qiang Shi. "The Impact of Consumers’ Peer-Induced Fairness Concerns on Mixed Retail and E-Tail Channels." Discrete Dynamics in Nature and Society 2020 (November 16, 2020): 1–15. http://dx.doi.org/10.1155/2020/9023470.

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With the rapid development of e-commerce, online retailing has become an important part of the market. In order to improve market competitiveness and increase market share, more and more retailers have opened both regular offline channel and online e-tail channel to sell products. Then how to price becomes an urgent problem for upstream manufacturers and dual-channel retailers when there is price competition between regular channel and e-tail channel, especially when consumers have peer-induced fairness concerns. However, linking consumers’ behavioral factors such as fairness concerns to prici

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Kucera, Pavel. "On Analogue TMR System." International Journal of Organizational and Collective Intelligence 3, no. 4 (2012): 1–18. http://dx.doi.org/10.4018/ijoci.2012100101.

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This chapter presents a reliability model of the TMR (Triple Modular Redundancy) system based on analogue measurement channels. While reliability modelling of the standard TMR system (based on digital channels) has been well described in many previous publications, an applicable reliability solution for analogue measurement channels is still missing. First, the structure of analogue measurement channel is described in this chapter. Then, the reliability model of the wiring system is introduced. Next, the standard TMR model is presented and its reliability model is mentioned. An analogue TMR me

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Qian, Yu. "Signal Processing and Channel Modelling for 5G Millimeter-Wave Communication Environment." Volume 31, Issue 3 31, no. 3 (2024): 137–50. http://dx.doi.org/10.20532/cit.2023.1005746.

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Compared to frequency bands below 6 GHz, 5G millimeter waves offer several advantages, including a large bandwidth, minimal null delay, and flexible null port configuration. To comprehend the channel characteristics of 5G millimeter-wave technology, conducting channel measurements on it is essential. Hence, to ensure precise 5G millimeter-wave channel measurements and facilitate channel modelling, this study recommends utilizing a phased array antenna-based method for the channel measurement. The experimental outcomes demonstrated that the shadow fading term of the actual measurement data foll

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Vidal, Catarina, Virgínia Infante, Yoann Lage, and Pedro Vilaça. "Modelling Microstructural Effects on the Mechanical Behaviour of a Friction Stirred Channel Aluminium Alloy." Key Engineering Materials 577-578 (September 2013): 37–40. http://dx.doi.org/10.4028/www.scientific.net/kem.577-578.37.

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Friction stir channelling (FSC) is a relatively new solid-state manufacturing technology able to produce conformal channels in a monolithic plate in a single step. During the FSC process the metal workpiece material is softened by the heat energy generated from dissipation during: plastic deformation, internal material flow and frictional work between the tool and the metal workpiece. The mechanical performance of a friction stirred channel aluminium alloy is affected by microstructure surrounding the channel. A new methodology that simulates a realistic 2D microstructure from experimental met

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Chen, Ming-fei, Yan-qiu Liu, Yang Song, and Qi Sun. "A Contract Coordination Model of Dual-Channel Delivery between UAVs and Couriers Considering the Uncertainty of Delivery for Last Mile." Discrete Dynamics in Nature and Society 2019 (December 8, 2019): 1–11. http://dx.doi.org/10.1155/2019/6214359.

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For the traditional last-kilometer delivery, commodities are sent from the distribution center to the distribution transfer station, which are then delivered by the couriers from the distribution transfer station to the consumers. This single distribution channel cannot prioritize services for consumers closer to the distribution center, resulting in a waste of distribution resources. To deal with the last-kilometer delivery problem, this paper attempts to build a dual-channel distribution system consisting of UAVs and couriers. And the impact of the market allocation proportion on the expecte

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Nowogoński, Ireneusz. "Emporal and Spatial Variability of Rainfall in Modelling of Stormwater Outflows." Civil and Environmental Engineering Reports 29, no. 4 (2019): 267–78. http://dx.doi.org/10.2478/ceer-2019-0060.

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Abstract The article presents issues related to modeling of the rainfall-runoff phenomenon. As factors influencing the simulation results, the velocity and direction of precipitation relative to the drainage basin were indicated. The possibility of underestimating the cross-sections of rainwater channels as a result of overlapping rain wave directions and the dominant flow direction in the rainwater channel network was pointed out. The research results to date indicate a reduction in the symptoms of this phenomenon as the complexity of the channel network increases. The final verification was

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Krishnaiah, Arkanti. "Finite Element Modelling of Copper by Equal Channel Angular Extrusion." Advanced Materials Research 941-944 (June 2014): 2313–16. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.2313.

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Equal channel angular extrusion (ECAE) is a severe plastic deformation (SPD) method for obtaining bulk nanostructured materials. The ECAE die consists of two equal channels that intersect at an angle, usually between 90o and 135o. . In the present study, the plastic deformation behavior of copper during the ECAE process with 120o die was investigated. To analyze the deformation behavior and the related strain distributions in the specimen, the commercial FE code ABAQUS has been used. The properties of the materials are strongly dependent on the shear plastic deformation behavior during equal c

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Kharchenko, Volodymir, Bo Wang, Andrii Grekhov, and Anna Leschenko. "MODELLING THE SATELLITE COMMUNICATION LINKS WITH ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING." TRANSPORT 31, no. 1 (2015): 22–28. http://dx.doi.org/10.3846/16484142.2014.1003599.

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Global technologies of data transmission in real time are developing constantly. Therefore, modelling of messages transmission through satellite constellations is an actual problem. In this paper the original model of a communication channel ‘Vehicle-to-Satellite-to-Ground Station’ based on principles of the IEEE 802.11a standard is designed using MatLab Sіmulіnk software. The model allows simulating data transmission with data rate from 6 to 54 Mbit/s using adaptive modulation. Two types of channels were analysed for uplink/downlink modulation – a free space path losses with phase/frequency o

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Ramulu, Malothu, and Arkanti Krishnaiah. "The Effect of Die Channel Angles and their Combination on Plastic Deformation of Pure Copper during Equal Channel Angular Pressing Using Finite Element Modelling." Advanced Engineering Forum 31 (February 2019): 63–69. http://dx.doi.org/10.4028/www.scientific.net/aef.31.63.

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It was investigated the effect of die channel angles and their combination on plastic deformation of pure copper during ECAP under friction and frictionless conditions using 2-D elastic-plastic finite element modelling. A sound knowledge obtained for the plastic deformation (material flow) and understood the relationships between plastic deformations. The modelling results suggested that strain inhomogeneity was lesser in channel angle 120o than channel angle 90o and pressing load as well as strain decrease with increasing die channel angle. The friction influence in case of combination of cha

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Zharkov, Ya Е., Sh T. Zhorzholiani, А. А. Sergeev, A. V. Agafonov, A. Y. Gorodkov, and L. A. Bockeria. "Experimental and model study of swirling fluid flow in a converging channel as a simulation of blood flow in the heart and aorta." Доклады Российской академии наук. Науки о жизни 515, no. 2 (2024): 104–21. http://dx.doi.org/10.31857/s2686738924020191.

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The study of swirling flows in channels corresponding to the static approximation of flow channels of the heart and major vessels with a longitudinal-radial profile zR2 = const and a concave streamlined surface at the beginning of the longitudinal coordinate has been carried out. A comparative analysis of the flow structure in channel configurations zRN = const, where N = –1; 1; 2; 3, in the absence and presence of a concave surface was carried out. The numerical modelling was compared with the results of hydrodynamic experiments on the flow characteristics and the shape of the flow lines. The

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Konz, M., M. Chiari, S. Rimkus, et al. "Sediment transport modelling in a distributed physically based hydrological catchment model." Hydrology and Earth System Sciences Discussions 7, no. 5 (2010): 7591–631. http://dx.doi.org/10.5194/hessd-7-7591-2010.

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Abstract. Sediment transport and erosion processes in channels are important components of water induced natural hazards in alpine environments. A distributed hydrological model, TOPKAPI, has been developed to support continuous simulations of river bed erosion and deposition processes. The hydrological model simulates all relevant components of the water cycle and non-linear reservoir methods are applied for water fluxes in the soil, on the surface and in the channel. The sediment transport simulations are performed on a sub-grid level, which allows for a better discretization of the channel

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