Relevant bibliographies by topics / River engineering Computer simulation

Academic literature on the topic 'River engineering Computer simulation'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "River engineering Computer simulation"

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ShahiriParsa, Ahmad, Mohammad Noori, Mohammad Heydari, and Mahmood Rashidi. "Floodplain Zoning Simulation by Using HEC-RAS and CCHE2D Models in the Sungai Maka River." Air, Soil and Water Research 9 (January 2016): ASWR.S36089. http://dx.doi.org/10.4137/aswr.s36089.

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River flooding causes several human and financial casualties. It is necessary to perform research studies and implement subsequent actions consistent with the nature of the river. In order to reduce flood damage, floodplain zoning maps and river cross-sectional boundaries are important to nonstructural measures in planning and optimizing utilization of the areas around the river. Due to the complex behavior of the rivers during floods, computer modeling is the most efficient tool with the least possible cost to study and simulate the behavior of the rivers. In this study, one-dimensional model Hydrologic Engineering Centers–-River Analysis System and two-dimensional model CCHE2D were used to simulate the flood zoning in the Sungai Maka district in Kelantan state, Malaysia. The results of these two models in most sections approximately match. Most differences in the results were in the shape of the river.
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Sekine, M., M. Ukita, and H. Nakanishi. "Systematic Pollutegraph Simulation for Real Scale River Basin." Water Science and Technology 23, no. 1-3 (January 1, 1991): 141–50. http://dx.doi.org/10.2166/wst.1991.0410.

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This study describes the model for predicting the run-off load of pollutants through rivers into eutrophic lakes and inner sea areas. The model is composed of three stages: discharged load prediction; flow-rate prediction; and run-off load prediction. The discharged load in the river basin is estimated by using a pollutant loading factor method. The flow-rate which is necessary for the formula to predict the run-off load, was obtained by a tank model method. The run-off load prediction process consists of two stages: flow-out stage and flow-down stage. The flow-out stage represents the process in which the discharged load, including that from non-point source, flows out through gutters or small streams into the main river. The flow-down stage represents the process in which the flow-out load flows down through the main river to an observing station. There have been many studies dealing with water quality and load of pollutants in rivers. However, only a few of these studies have analyzed the relationship of human activities in the river basins quantitatively. Using this model, a computer program for pollutegraph simulation was constructed and applied to the river Ibo in Hyougo prefecture, JAPAN. The results obtained showed in accordance with the data obtained from field investigation.
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Chen, Sun. "Water Pollution Simulation over a River Basin Using a Computer Graphic Model." Water Science and Technology 24, no. 6 (September 1, 1991): 101–8. http://dx.doi.org/10.2166/wst.1991.0145.

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A Computer Graphic Model (CGM) was realized on a personal computer for the purpose of river water pollution simulation and planning. With the aid of common software AutoCAD, a color map of a complex river system was established and a suite of graphic symbol blocks such as pollution source, water intake, wastewater treatment plant etc. was designed to fit the needs of basin pollution management and planning. A person can insert, move/remove or modify these symbol blocks in the CGM of the river basin freely. While a new idea is confirmed, a simulation program POLSIM (written with AutoLISP) can be started which redraws the river with different width and color by the mean flow quantity and water quality. The result of a case study and a group of photographs is presented. The methodology of CGM makes the planning process of basin water pollution control easier, visual and interactive. CGM is a friendly tool to link the decision maker, planner and system analyst with active graphics.
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Suzuki, M., K. Chihara, M. Okada, H. Kawashima, and S. Hoshino. "Development of Dialog System Model for Eutrophication Control between Discharging River Basin and Receiving Water Body – Case Study of Lake Sagami (Japan)." Water Science and Technology 21, no. 12 (December 1, 1989): 1821–24. http://dx.doi.org/10.2166/wst.1989.0178.

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A computer program based on expert system software was developed and proposed as a prototype model for water management to control eutrophication problems in receiving water bodies (Suzuki etal., 1988). The system has several expert functions: 1. data input and estimation of pollution load generated and discharged in the river watershed; 2. estimation of pollution load run-off entering rivers; 3. estimation of water quality of receiving water bodies, such as lakes; and 4. assisting man-machine dialog operation. The program can be used with MS-DOS BASIC and assembler in a 16 bit personal computer. Five spread sheets are utilized in calculation and summation of the pollutant load, using multi-windows. Partial differential equations for an ecological model for simulation of self-purification in shallow rivers and simulation of seasonal variations of water quality in a lake were converted to computer programs and included in the expert system. The simulated results of water quality are shown on the monitor graphically. In this study, the expert system thus developed was used to estimate the present state of one typical polluted river basin. The river was the Katsura, which flows into Lake Sagami, a lake dammed for water supply. Data which had been actually measured were compared with the simulated water quality data, and good agreement was found. This type of expert system is expected to be useful for water management of a closed water body.
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He, Fei, Qiuying Lai, Jie Ma, Geng Wei, and Weixin Li. "Numerical Simulations of Sudden Oil Spills in Typical Cross-Border Rivers in the Yangtze River Delta Region." Applied Sciences 12, no. 24 (December 19, 2022): 13029. http://dx.doi.org/10.3390/app122413029.

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The Taipu River is an important cross-border river in the Yangtze River Delta region and a direct channel connecting Taihu Lake and Huangpu River. Along the main stream of the Taipu River are many sources of water, such as the Wujiang, Dingzha, and Liantang Rivers. Many boats traverse these rivers transporting a wide variety of goods, including large quantities of oil, chemicals, and other dangerous goods. In the event of accidents on these vessels, spilled cargo will directly threaten the drinking water safety of people in the region. Aiming at simulating and assessing the environmental risks of sudden oil spills in rivers in the Yangtze River Delta region, this paper established a two-dimensional oil spill model of the typical transboundary Taipu River based on the MIKE21 water environment numerical simulation software developed by the Danish Institute of Water Conservancy. The established model will improve emergency response and treatment plans as well as our understanding of river oil spill progressions.
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Awang Ali, Awang Nasrizal, and Junaidah Ariffin. "Model Reliability Assessment: A Hydrodynamic Modeling Approach for Flood Simulation in Damansara Catchment Using InfoWorks RS." Advanced Materials Research 250-253 (May 2011): 3769–75. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.3769.

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This paper presents the flood inundation model using a hydrodynamic approach for flood simulation. A Digital Elevation Model (DEM) for Damansara Catchment was developed and integrated into the InfoWorks River Simulation (RS) program. Hydrographic surveying activity was carried out to collect existing Damansara River cross-section. The 3D flood model was calibrated using the 26th February 2006 and 15th October 2008 flooding event data. The model was validated using the flooding event on 21st March 2007. This computer simulation results produced hydrograph that indicates the capability of the model in dealing with regional flood analysis for future usage in designing structural flood measures.
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Ilich, Nesa. "Improvement of the return flow allocation in the Water Resources Management Model of Alberta Environment." Canadian Journal of Civil Engineering 20, no. 4 (August 1, 1993): 613–21. http://dx.doi.org/10.1139/l93-078.

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This paper describes recent developments related to a new return flow algorithm built into the Water Resources Management Model (WRMM) of Alberta Environmental Protection. An earlier return flow allocation method which was used in the WRMM did not always give satisfactory results. It was essential to fix this problem, since correct modelling of the return flows in overall river basin management is of crucial importance. The new return flow algorithm offers more reliable return flow allocation without detrimental effects on the overall model solution. This model is a major river basin planning tool in western Canada used to analyze responses of a river basin to varying operating policies or structural developments. It is a simulation model with a nested optimization subprogram. As a deterministic, steady state, and surface water allocation model, it normally relies on the estimates of natural flows and water demands throughout the river basin. The WRMM can provide quick simulations of any river basin with any number of components within a microcomputer environment. The model is used in ongoing river basin management studies in Alberta and other western provinces in Canada. Key words: water management, computer modelling, simulation, optimization, irrigation.
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Li, Shuanhu, Jun Yang, and Ziwen Zhang. "Research on 3D International River Visualization Simulation Based on Human-Computer Interaction." Wireless Communications and Mobile Computing 2020 (December 1, 2020): 1–12. http://dx.doi.org/10.1155/2020/8838617.

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With the development of digitalization in various fields, the water conservancy field is gradually developing digital three-dimensional visualization research to promote the development of digital watershed construction. This paper deeply analyzes and discusses the theory and application of three-dimensional visualization of river water scenes and realizes an interactive visual simulation system based on virtual reality technology, which simulates simulation and operation management, which can greatly accelerate the data. The processing speed makes the huge data be effectively utilized to provide visual interaction means for numerical simulation and data analysis, improve the efficiency of numerical calculation, and realize human-computer interaction communication, so that people can observe the phenomena and laws that are difficult to observe by traditional methods. The rationality of the mathematical model is analyzed for effectiveness.
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Vichiantong, Sutatip, Thida Pongsanguansin, and Montri Maleewong. "Flood Simulation by a Well-Balanced Finite Volume Method in Tapi River Basin, Thailand, 2017." Modelling and Simulation in Engineering 2019 (January 15, 2019): 1–13. http://dx.doi.org/10.1155/2019/7053131.

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Flood simulation of a region in southern Thailand during January 2017 is presented in this work. The study area covers the Tapi river, the longest river in southern Thailand. The simulation is performed by applying the two-dimensional shallow water model in the presence of strong source terms to the local bottom topography. The model is solved numerically by our finite volume method with well-balanced property and linear reconstruction technique. This technique is accurate and efficient at solving for complex flows in the wet/dry interface problem. Measurements of flows are collected from two gauging stations in the area. The initial conditions are prepared to match the simulated flow to the measurements recorded at the gauging stations. The accuracy of the numerical simulations is demonstrated by comparing the simulated flood area to satellite images from the same period. The results are in good agreement, indicating the suitability of the shallow water model and the presented numerical method for simulating floodplain inundation.
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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 account daily regulation. This makes it possible to identify and proactively take measures, such as: determining the time to reach the flow along the channel; the establishment of water volume flow in an arbitrary channel; taking emergency measures to regulate the incoming residual volume of water after its termination into the system, in the event of an accident at pumping stations; identification of the nature and direction of channel processes; prevention of undermining of supports and damage to power lines passing through the channel, and many other engineering tasks. The developed tested mathematical model allows in real conditions and in real time to help the operational services of large channels in the operational management of actions, in emergency situations, and the choice of the most effective, at any point in time, measures to minimize the consequences. Analysis of the results of many researchers has created the opportunity for the authors of this article to conclude that the above system of hydrodynamic equations is applicable in mathematical modelling of motion, taking into account the transverse circulation of the flow.
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Dissertations / Theses on the topic "River engineering Computer simulation"

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Cheung, Priscilla 1980. "Charles River City : an educational augmented reality simulation pocket PC game." Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/27096.

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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, February 2004.
Includes bibliographical references (p. 79).
This thesis has designed and implemented Charles River City, an educational, location-based augmented reality simulation game that uses Pocket PC devices and GPS technology. As mobile devices and processing power become more common and affordable, high school teachers can take advantage of these technological advances to explore new channels for teaching and motivating students. The Charles River City game seeks to engage middle to high school students in learning science in a fun and innovative way. The story and background in the game is loosely based on a previous work called River City, a desktop multi-player virtual simulation game. In Charles River City, students work in teams to investigate the cause of several illnesses in a virtual town. Through interviewing virtual characters, gathering water samples, and analyzing collected data, students learn to think and solve problems as a scientist would. A test run of the game shows that the simulation game is an effective teaching tool that gives students a hands on experience in solving a real world problem that is fun and challenging.
by Priscilla Cheung.
M.Eng.
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Mounir, Adil. "Development of a Reservoir System Operation Model for Water Sustainability in the Yaqui River Basin." Ohio University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1513880139368117.

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Choodegowda, Ravikumar B. "Modeling small reservoirs in the Great Plains to estimate overflow and ground-water recharge." Diss., Kansas State University, 2009. http://hdl.handle.net/2097/4610.

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Doctor of Philosophy
Department of Biological & Agricultural Engineering
James K. Koelliker
Small reservoirs catch and store water for long periods and they decrease streamflow and increase ground-water recharge. A field monitoring program provided the measured water depth for four years in several reservoirs in the Republican River Basin where there are concerns about their aggregate effects in the basin. The daily water budget operation for one reservoir was developed. Daily seepage rates were estimated by using precipitation, inflow and evaporation which was assumed equal to grass reference evapotranspiration (ET0), that average 120 to 150 cm/yr, along with the measured stage-storage and stage-surface area relationships. Two computer simulation modules, written in FORTRAN 95, were developed to estimate 1) overflow and gross seepage and 2) potential for ground-water recharge underneath the reservoir. Required daily input data are precipitation, ET0, and inflow from the watershed area. Required reservoir site characteristics include stage-storage and stage-surface area relationships, a standard seepage rate (S0) at 14 different levels in the reservoir, soil-water and plant-growth characteristics and a monthly crop-residue factor. The gross seepage module calculates water depth that determines daily overflow, the water-surface area for evaporation and the head of water on the 14 levels to cause seepage losses. If a level is not inundated, seepage is zero. If a level is inundated less than 0.3-m, S0 is used. When the water head (hL) on a level exceeds 0.3 m, the seepage rate (SL) is increased by, SL = S0 * (hL/0.3)0.25. This relationship was chosen after testing several exponent values between 0 and 1. The modules were calibrated on one reservoir and verified on two others in northwestern Kansas. Results showed runoff from the watersheds averaged about 1.2 to 1.6 cm/yr from the average annual precipitation of 46 to 62 cm. The three reservoirs reduced streamflow at the reservoir site by 74 to 97%, but 90 to 95% of the retained runoff was calculated to contribute to ground-water recharge. Several sensitivity analyses for model inputs were done. Results showed that, the ratio of the average annual inflow volume from the watershed area to the reservoir storage volume was the most sensitive input variable tested.
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Morvan, Herve P. "Three-dimensional simulation of river flood flows." Thesis, University of Glasgow, 2001. http://theses.gla.ac.uk/6881/.

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This thesis describes the implementation of general Computational Fluid Dynamics (CFD) techniques to laboratory and natural channels under flood flow conditions. Two commercially available codes, TELEMAC and CFX4, have been used in this work. The assessment of CFD for the calculation of flooded channel flow dynamics is carried out by simulating one laboratory test case from the Flood Channel Facility (FCF) Series B. This test case is that of a meandering two-stage channel with a depth ratio of 25% on the flood plain. Results from a computer simulation of experiment B23 are presented with a detailed quantitative comparison of the measured velocity, turbulence and bed shear stress. It supports the conclusion that CFD is able to account for the different flow mechanisms arising from the interaction between inbank and overbank flows in meandering channels. The maximum error in the prediction of the velocity is 10% and the comparisons show the calculations of bed shear stress to be reasonably accurate as well. Numerical tests indicate that the numerical solution is relatively independent of the boundary conditions, and confirm that turbulence transport is of minor importance in the experiment simulated. Numerical results from the simulation of flood flow mechanisms in natural rivers are also presented. It is hoped that these are of value to practitioners. Two 1-km reaches on the River Severn and River Ribble are modelled. They permit the investigation of two-stage channel flow dynamics at a larger scale. The numerical verification process establishes that the scale and the complex nature of the geometry are limiting factors, particularly for the numerical discretization of the domain and the calculation of the variables at the walls. It is however possible to estimate a priori part of the error such constraints generate. Away from the walls, the flow main features seem well predicted. The parallel between the velocity fields observed in river flood flows and those observed in the FCF is evident. Validation against field data suggests that the models are able to reproduce the flow mechanisms and account for bed shear stress variations correctly. Yet a significant level of uncertainty remains when the model predictions are compared against measured point data; more validation work is therefore required.
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Kwon, Jae-Il. "Simulation of turbidity maximums in the York River, Virginia." W&M ScholarWorks, 2005. https://scholarworks.wm.edu/etd/1539616723.

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Two of the most important processes in cohesive sediment transport, erosion rate and settling velocity, were the focus of this study. Settling velocities were estimated by the Owen tube method and the acoustic Doppler velocimeter (ADV) method. A novel erosion model, namely a constant erosion rate model, was implemented in a three-dimensional hydrodynamic eutrophication model (HEM-3D) to simulate the turbidity maximums in the York River system, Virginia. Two one-month periods of model simulations were conducted to mimic typical dry (November--December, 2001) and wet (March--April, 2002) seasons. In order to have enough data to verify the model, four slack water surveys were carried out during each period to measure salinity and total suspended solid (TSS) profiles. Because of the unexpected extremely low freshwater discharge during both those periods, all survey results showed similar salinity and TSS distributions. The estuarine turbidity maximums were abnormally located about 30 km upstream from West Point, with TSS concentrations on the order of 102 mg/L. Laboratory Owen tube experiments showed that the settling velocity was related to the TSS concentration, highlighting the importance of sediment availability on settling velocity and the less important salinity effect. The estimated settling velocities from four sets of ADV field measurements were much higher than that from the Owen tube laboratory experiments and better reproduced the turbidity maxima for slackwater simulations. These suggested that turbulence may have a dominant effect on settling velocity, and the ADV method seems to be an effective and suitable way to estimate the settling velocity in turbulence dominated environments. Based on a newly found erosion behavior, a constant erosion rate model was implemented in a three-dimensional numerical model such that erosion occurs only during accelerating phases of the tide. Specifically, the Four Factor Model was suggested that consists of (i) a reference constant erosion rate, (ii) hydrodynamic effects, (iii) spatial variability of the bed condition, and (iv) temporal variability of the bed condition. The Four Factor Model successfully simulated the turbidity maximums in the York River system.
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Reda, Luiz de Lima. "Simulation and control of stormwater impacts on river water quality." Thesis, Imperial College London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338878.

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Downes, Richard J. "Computer simulation of form-roll design." Thesis, Aston University, 1991. http://publications.aston.ac.uk/11903/.

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Changes in modern structural design have created a demand for products which are light but possess high strength. The objective is a reduction in fuel consumption and weight of materials to satisfy both economic and environmental criteria. Cold roll forming has the potential to fulfil this requirement. The bending process is controlled by the shape of the profile machined on the periphery of the rolls. A CNC lathe can machine complicated profiles to a high standard of precision, but the expertise of a numerical control programmer is required. A computer program was developed during this project, using the expert system concept, to calculate tool paths and consequently to expedite the procurement of the machine control tapes whilst removing the need for a skilled programmer. Codifying the expertise of a human and the encapsulation of knowledge within a computer memory, destroys the dependency on highly trained people whose services can be costly, inconsistent and unreliable. A successful cold roll forming operation, where the product is geometrically correct and free from visual defects, is not easy to attain. The geometry of the sheet after travelling through the rolling mill depends on the residual strains generated by the elastic-plastic deformation. Accurate evaluation of the residual strains can provide the basis for predicting the geometry of the section. A study of geometric and material non-linearity, yield criteria, material hardening and stress-strain relationships was undertaken in this research project. The finite element method was chosen to provide a mathematical model of the bending process and, to ensure an efficient manipulation of the large stiffness matrices, the frontal solution was applied. A series of experimental investigations provided data to compare with corresponding values obtained from the theoretical modelling. A computer simulation, capable of predicting that a design will be satisfactory prior to the manufacture of the rolls, would allow effort to be concentrated into devising an optimum design where costs are minimised.
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Hoffmann, Nicole Andrea. "Computer simulation of fire-sprinkler interaction." Thesis, University of Greenwich, 1990. http://gala.gre.ac.uk/6369/.

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The research work presented herein addresses the problem of the mathematical modelling of fire and fire-sprinkler scenarios. This involved the numerical simulation of two-phase, three-dimensional, buoyant, turbulent, recirculating flows. The simulations were carried out in two successive and distinct stages. The first stage dealt with the modelling of buoyant hot turbulent gas flows generated by a fire within room-sized compartments. These single phase studies were based on the field modelling approach to fire simulation. The second part of the study involved the introduction of the cold water droplets through a single sprinkler head, thus, extending the scenario into the more complex two-phase regime. This led to expanding the single-phase fire model to take account of two concurrently present phases, ie. gas/liquid. The strategy used to model the twophase process was the Eulerian-Eulerian technique or volume-fraction method. In order to take into account the physics involved in this process, interphase friction or drag was considered. Furthermore, due to the large difference in temperatures between the hot gases and the cold water droplets it was necessary to introduce interphase heat transfer. Due to the subsequent evaporation of the water droplets interphase mass transfer was also accounted for. Models for both steady-state and time-dependent situations were developed, whereby experimental results of transient fire-sprinkler tests were used for validation. The simulations performed indicated the creation of extremely complex flow fields within the compartments both prior and during sprinkler activation. Phenomena such as the significant cooling of the hot combustion gases caused by the active sprinkler and the evaporation of water droplets have also been predicted. This has been verified by the experimental data. Thus, it can be concluded that the models outlined herein are capable of simulating the complex two-phase fire-sprinkler scenarios. The need for subsequent investigative studies into such areas as the effect of using different auxiliary relationships eg. heat transfer, sprinkler characteristics and gridspacing has been highlighted. In order to complete the validation process, further experimental data needs to be made available. This two-phase technique has proven to be very computationally intensive with simulations requiring days of CPU time. 'Mis is clearly unacceptable. However, it is suggested that parallel computing technology may provide a means for reducing the CPU time involved to hours. It can be concluded that though the model developed requires further investigation and refinements, it provides a basis for a practical and useful fire engineering tool.
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Lian, Guoping. "Computer simulation of moist agglomerate collisions." Thesis, Aston University, 1994. http://publications.aston.ac.uk/14297/.

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This thesis considers the computer simulation of moist agglomerate collisions using the discrete element method (DEM). The study is confined to pendular state moist agglomerates, at which liquid is presented as either absorbed immobile films or pendular liquid bridges and the interparticle force is modelled as the adhesive contact force and interstitial liquid bridge force. Algorithms used to model the contact force due to surface adhesion, tangential friction and particle deformation have been derived by other researchers and are briefly described in the thesis. A theoretical study of the pendular liquid bridge force between spherical particles has been made and the algorithms for the modelling of the pendular liquid bridge force between spherical particles have been developed and incorporated into the Aston version of the DEM program TRUBAL. It has been found that, for static liquid bridges, the more explicit criterion for specifying the stable solution and critical separation is provided by the total free energy. The critical separation is given by the cube root of liquid bridge volume to a good approximation and the 'gorge method' of evaluation based on the toroidal approximation leads to errors in the calculated force of less than 10%. Three dimensional computer simulations of an agglomerate impacting orthogonally with a wall are reported. The results demonstrate the effectiveness of adding viscous binder to prevent attrition, a common practice in process engineering. Results of simulated agglomerate-agglomerate collisions show that, for colinear agglomerate impacts, there is an optimum velocity which results in a near spherical shape of the coalesced agglomerate and, hence, minimises attrition due to subsequent collisions. The relationship between the optimum impact velocity and the liquid viscosity and surface tension is illustrated. The effect of varying the angle of impact on the coalescence/attrition behaviour is also reported. (DX 187, 340).
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Afshari, Tork Shahabeddin. "Derivation and Application of Idealized Flow Conditions in River Network Simulation." Thesis, The City College of New York, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13422984.

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Streamflow information is essential for many important uses across a broad range of scales, including global water balances, engineering design, flood forecasting, reservoir operations, navigation, water supply, recreation, and environmental management.

Natural streams are characterized by changes in cross-section geometry, slope, and geophysical properties (bed-roughness, channel slope, etc.) along their reaches. Variations in the shape and size of the channel bed geometry result from several interacting features of the river system including the effect of different flow regimes, slope, sediment load, etc. Simplifying the river bed geometries could reduce the burden of assembling the required data, so implementing less detailed routing procedures could lower the computational burden. “At-a-station” hydraulic geometry (AHG) relationships are power-law functions which relate river discharge to key the hydraulics (i.e., velocity, depth, width, and flow area). The AHG relations have been introduced and discussed among researchers, engineers, and geomorphologist since the '50s based upon a limited number of observations made over few flow monitoring stations across the United States.

This doctoral thesis starts with an introduction to statistical data filtering procedures that are being trained and tested over both synthetic and realistic data followed by being applied over ~4000 U.S. Geological Survey’s river monitoring stations to compute AHG parameters based upon robust discharge-hydraulic measures. Given “refined” dataset, estimated AHG parameters are combined with morphological (channel pattern, channel slope, etc.) and geophysical features at a site. Doing so, potential interrelation among independent and dependent variables will be highlighted. Accordingly, given some assumptions, it is verified how well channel morphology and hydraulic components are intertwined and combined with AHG parameters and how categorizing river monitoring stations according to these characteristics will be practical and useful for further studies. For instance, the application of AHG parameters in modifying numerical hydraulic routing coefficients will result in an improvement in predictability of flood routing schemes (here, Muskingum-Cunge). The thesis will be concluded by the analysis of trade-off between computation time and accuracy or complexity vs. simplicity among advanced, hydrodynamic (HEC-RAS 2D) vs. low-complexity (AutoRoute and HAND) models that is also an alternative way to affirm the advantage of idealizing or simplifying a hydraulic system over-relying on time- and energy-costly approaches.

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Books on the topic "River engineering Computer simulation"

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He gong mo xing liang ce yu kong zhi ji shu. Beijing: Zhong guo shui li shui dian chu ban she, 2010.

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Yujun, Yi, and Wang Xingkui, eds. Liu yu xu ni fang zhen mo ni. Beijing: Ke xue chu ban she, 2011.

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Huval, C. J. Ship navigation simulation study, Southwest Pass Entrance, Mississippi River. [Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1996.

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Webb, Dennis W. Ship navigation simulation study, southern branch of the Elizabeth River, Norfolk, Virginia. [Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1995.

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Franz, Delbert D. Full Equations (FEQ) model for the solution of the full, dynamic equations of motion for one-dimensional unsteady flow in open channels and through control structures. Mountain View, Calif: U.S. Dept. of the Interior, U.S. Geological Survey, 1997.

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Webb, Dennis W. Ship navigation simulation study, southern branch of the Elizabeth River, Gilmerton and Interstate 64 bridges, Norfolk, Virginia. [Vicksburg, Miss: U.S. Army Engineer Waterways Experiment Station, 1995.

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7

Molinas, Albert. User's manual for BRI-STARS (BRidge Stream Tube model for Alluvial River Simulation). McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center, 2000.

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Molinas, Albert. User's manual for BRI-STARS (BRidge Stream Tube model for Alluvial River Simulation). McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center, 2000.

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Molinas, Albert. User's manual for BRI-STARS (BRidge Stream Tube model for Alluvial River Simulation). McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center, 2000.

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Molinas, Albert. User's manual for BRI-STARS (BRidge Stream Tube model for Alluvial River Simulation). McLean, VA: U.S. Dept. of Transportation, Federal Highway Administration, Research, Development, and Technology, Turner-Fairbank Highway Research Center, 2000.

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Book chapters on the topic "River engineering Computer simulation"

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Qamar, M. Z., M. K. Verma, A. P. Meshram, and Neena Isaac. "Numerical Simulation of Desilting Chamber Using Flow 3D." In River and Coastal Engineering, 177–86. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05057-2_16.

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Kori, Santosh, and Prabhat Chandra. "Numerical Simulation of Wave Conditions for Mangrol Fishing Harbour." In River and Coastal Engineering, 161–68. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-05057-2_14.

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Doi, Masao. "Computer Simulation of Polymers." In Macromolecular Science and Engineering, 287–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-58559-3_19.

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Evgrafov, Alexander N., and Gennady N. Petrov. "Computer Simulation of Mechanisms." In Advances in Mechanical Engineering, 45–56. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-53363-6_6.

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Suresh Paul, Joseph, and Subha Gouri Raveendran. "Simulation Overview." In SpringerBriefs in Electrical and Computer Engineering, 19–32. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25483-8_2.

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Wei, Daming. "Whole Heart Modeling and Computer Simulation." In Bioelectric Engineering, 81–117. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-0-387-49963-5_3.

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Ghasem, Nayef. "Simulation of Entire Processes." In Computer Methods in Chemical Engineering, 417–26. 2nd ed. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003167365-9.

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Budde, Carlos E., Pedro R. D’Argenio, and Holger Hermanns. "Rare Event Simulation with Fully Automated Importance Splitting." In Computer Performance Engineering, 275–90. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23267-6_18.

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Bernad, Cristina, Pedro J. Roig, Salvador Alcaraz, Katja Gilly, and Sonja Filiposka. "Edge Performance Analysis Challenges in Mobile Simulation Scenarios." In Computer Performance Engineering, 151–66. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-25049-1_10.

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Soiguine, Alex. "Computer Simulation Via Direct Modeling." In Lecture Notes in Electrical Engineering, 123–32. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-85437-3_11.

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Conference papers on the topic "River engineering Computer simulation"

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Khan, M., M. Iqbal, and J. Quaicoe. "A Technology Review and Simulation Based Performance Analysis of River Current Turbine Systems." In 2006 Canadian Conference on Electrical and Computer Engineering. IEEE, 2006. http://dx.doi.org/10.1109/ccece.2006.277821.

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Blanco, Juan C., and Carlos F. Rodríguez. "Optimal Design of a River Boat Simulator." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70456.

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Motion simulation platforms are mechanical devices designed to replicate the dynamics of a given vehicle. They are very attractive for training individuals such as drivers, pilots or passengers. This paper describes the dimensional synthesis of a river boat simulator that consists of a section of the boat (hull) mounted over a 3 DOF parallel robot with a passive weight compensator (3UPS + PU). Given that the dynamic performance of the robot depends strongly on its geometry, an optimization strategy was applied to find its optimal configuration. The optimization objective was to minimize the dynamic requirements of the driving actuators while accomplishing a typical simulation routine. We present the virtual work formulation of the simulator dynamics, which was previously verified with a multi-body software model. This formulation is used in an optimization methodology based on Genetic Algorithms. Different optimal configurations were found related to the set of constraints and sub-spaces of variables considered by the optimization formulation.
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Dong, Yongqiang, and Liping Sun. "Computer simulation and analysis of deepwater Steel Catenary Riser." In Mechanical Engineering and Information Technology (EMEIT). IEEE, 2011. http://dx.doi.org/10.1109/emeit.2011.6023281.

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Shang, Weicheng, Bojun Wang, and Yanping Yang. "Energy consumption analysis of passive buildings in the Yangtze River Delta based on PKPM-PHEnergy simulation." In International Conference on Electronic Information Engineering, Big Data, and Computer Technology (EIBDCT 2022), edited by Xuexia Ye and Guoqiang Zhong. SPIE, 2022. http://dx.doi.org/10.1117/12.2635388.

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Melanz, Daniel, Hammad Mazhar, and Dan Negrut. "Gauging Military Vehicle Mobility Through Many-Body Dynamics Simulation." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34400.

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This paper describes a modeling, simulation, and visualization framework aimed at enabling physics-based analysis of ground vehicle mobility. This framework, called Chrono, has been built to leverage parallel computing both on distributed and shared memory architectures. Chrono is both modular and extensible. Modularity stems from the design decision to build vertical applications whose goal is to reduce the end-to-end time from vision-to-model-to-solution-to-visualization for a targeted application field. The extensibility is a consequence of the design of the foundation modules, which can be enhanced with new features that benefit all the vertical applications. Two factors motivated the development of Chrono. First, there is a manifest need of modeling approaches and simulation tools to support mobility analysis on deformable terrain. Second, the hardware available today has improved to a point where the amount of sheer computer power, the memory size, and the available software stack (productivity tools and programming languages) support computing on a scale that allows integrating highly accurate vehicle dynamics and physics-based terramechanics models. Although commercial software is available nowadays for simulating vehicle and tire models that operate on paved roads; deformable terrain models that complement the fidelity of present day vehicle and tire models have been lacking due to the complexity of soil behavior. This paper demonstrates Chrono’s ability to handle these difficult mobility situations through several simulations, including: (i) urban operations, (ii) muddy terrain operations, (iii) gravel slope operations, and (iv) river fording.
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Blanco, Juan C., and Carlos F. Rodri´guez. "Configuration Optimization of a Boat Simulation Platform for a Mobile User." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-38759.

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Motion simulation platforms are mechanical devices designed to replicate the dynamics of a given vehicle. These devices are very attractive for training individuals as drivers, pilots or passengers. In the case of river boats, the simulator consists of a section of the boat (hull) mounted over a 3 DOF parallel robot with a passive mass compensator (3UPS + PU). If users have mobility in the hull, an uncertainty in the position of the upper platform’s center of mass is produced. This variation may generate excessive loads on the robot that can be prevented by an adequate placement of the hull over the robot. Dynamic calculations, based on measurements of the real boat in motion, are computed by numerical simulations in SimMechanics. Three methodologies are presented for optimizing the configuration of a boat simulation platform. First, a manual procedure is developed in which critical cases are intuitively detected and evaluated. Then, two multi-variable optimization algorithms are used to systematically obtain the best position and orientation (pose) of the boat section: Genetic Algorithms and low discrepancy sequences. The pose is the design variable; the average forces are the objective functions and the maximum difference between the average forces is the fitness function. The article describes the design problem, the proposed optimization methodologies and simulation results for the optimal configuration.
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Yu, Le, and Shaohua Zhong. "Numerical simulation and optimization of automobile rivet nut cold forming." In 2nd IYSF Academic Symposium on Artificial Intelligence and Computer Engineering, edited by Wei Qin. SPIE, 2021. http://dx.doi.org/10.1117/12.2623152.

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Zoghi-Moghadam, Mohamad, Charles B. Watkins, Ali Sadegh, and Dan Dunlap. "Simulation of Stand-Up Lift Truck Accidents to Evaluate Their Design and Operator Training Implications." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-32463.

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OSHA regulations mandate that operators of stand-up rider lift trucks be trained to jump clear of the truck in overturn accidents. Operator compartment doors have been considered as a design modification to protect operators against lower leg injuries in some other types of stand-up rider accidents. However, they restrict the ability of operators to rapidly jump clear and must be evaluated against the injuries that operators can incur by remaining in the truck. This paper describes computer simulation by a newly developed biodynamic model and testing with anthropomorphic test devices and actual trucks to advance the state of knowledge concerning injury potential in tip-over and off-the-dock accidents. Implications of the results for design as well as for OSHA training regulations are discussed.
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Lang, Donogh W., Kieran Murphy, and Michael Lane. "Development of a New On-Board Tool for Planning Drilling Riser Operations in High Current Environments." In ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2007. http://dx.doi.org/10.1115/omae2007-29252.

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With drilling and exploration occurring in ever deeper waters and harsh environmental conditions, the ability to properly plan critical operations such as deployment and retrieval of the drilling riser becomes increasingly important. Particularly in deepwater high current environments, deployment and retrieval operations can be limited by the length of time it takes to deploy or retrieve the riser and the danger of the riser joints binding in the diverter housing. These limitations can have significant impact on both operations and riser integrity. Drilling contractors have devised a number of means of conducting operations in high current environments in order to increase operational up-time and mitigate the risks involved. One approach is drift-running, where the drilling rig is positioned upstream of the well at the start of the deployment operation and the rig is allowed to drift in a controlled manner to the well as the riser is deployed. This procedure effectively reduces the current loading on the riser, thereby allowing the riser to be deployed without risk of binding in the diverter housing. This paper describes an on-board simulation tool designed for use on dynamically-positioned (DP) drilling rigs that can be used to plan deployment/retrieval and drift-running operations. The tool is a development of an on-board drift-off simulator that has been in operation on-board the latest generation of DP drillships for some time. The simulator uses a fully-coupled 3D finite element (FE) model of the riser system, thereby allowing accurate determination of the riser response to current loading. The simulator computes the angle of the riser in the diverter housing throughout the deployment/retrieval process. Additionally, the simulator can compute the optimum drift speed of the vessel to minimise the riser angle. Based on the results of these simulations, the on-board tool can determine the feasibility of deploying or retrieving the riser and can compute the required vessel track for carrying out drift-running operations. The tool allows on-board personnel to plan these operations using either prevailing or forecast metocean conditions. The key features of the on-board simulator are discussed, with particular emphasis on the procedure used to compute the drift-running track for the drilling rig during riser deployment. The benefits of the system in planning deployment/retrieval operations are illustrated by means of a number of case-studies.
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Kaslusky, Scott F., Kent S. Udell, and Glenn E. McCreery. "Numerical Modeling of Steam Injection Into Saturated Porous Media." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-1568.

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Abstract The Steam Enhanced Extraction (SEE) process is being considered for removal of volatile organic contaminants contained in the fractured basalt rocks which lie above the Snake River aquifer at the Idaho National Engineering and Environmental Laboratory (INEEL). In this work the computer code M2NOTS (Multiphase Multi-component Non-isothermal Organic Transport Simulator) was used to simulate an experiment which tracked the movement of a steam condensation front through glass blocks separated by glass beads. The experiment was designed to represent steam injection into highly fractured basalt. For grid spacing equal to the block size heat transfer from the fractures to the blocks was severely under predicted, resulting in an over prediction of the condensation front velocity. A method was developed to accurately simulate the propagation of a steam condensation front through a fractured porous media using grid spacing equal to the block dimension. The method accounts for non-equilibrium conduction within a grid node, allowing the grid spacing to be increased well beyond the local equilibrium restriction. Simulation results compare well with the experimental results, validating the non-equilibrium model, and also indicating that M2NOTs can be effectively used to model the steam enhanced extraction process in fractured porous media.
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Reports on the topic "River engineering Computer simulation"

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Nakano, Aiichiro, Rajiv K. Kalia, and Priya Vashishta. Computer Simulation of Strain Engineering and Photonics Semiconducting Nanostructure on Parallel Architectures. Fort Belvoir, VA: Defense Technical Information Center, February 2000. http://dx.doi.org/10.21236/ada384426.

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Dobranich, D. SAFSIM theory manual: A computer program for the engineering simulation of flow systems. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10115531.

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Semerikov, Serhiy, Illia Teplytskyi, Yuliia Yechkalo, Oksana Markova, Vladimir Soloviev, and Arnold Kiv. Computer Simulation of Neural Networks Using Spreadsheets: Dr. Anderson, Welcome Back. [б. в.], June 2019. http://dx.doi.org/10.31812/123456789/3178.

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The authors of the given article continue the series presented by the 2018 paper “Computer Simulation of Neural Networks Using Spreadsheets: The Dawn of the Age of Camelot”. This time, they consider mathematical informatics as the basis of higher engineering education fundamentalization. Mathematical informatics deals with smart simulation, information security, long-term data storage and big data management, artificial intelligence systems, etc. The authors suggest studying basic principles of mathematical informatics by applying cloud-oriented means of various levels including those traditionally considered supplementary – spreadsheets. The article considers ways of building neural network models in cloud-oriented spreadsheets, Google Sheets. The model is based on the problem of classifying multi-dimensional data provided in “The Use of Multiple Measurements in Taxonomic Problems” by R. A. Fisher. Edgar Anderson’s role in collecting and preparing the data in the 1920s-1930s is discussed as well as some peculiarities of data selection. There are presented data on the method of multi-dimensional data presentation in the form of an ideograph developed by Anderson and considered one of the first efficient ways of data visualization.
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Markova, Oksana, Serhiy Semerikov, and Maiia Popel. СoCalc as a Learning Tool for Neural Network Simulation in the Special Course “Foundations of Mathematic Informatics”. Sun SITE Central Europe, May 2018. http://dx.doi.org/10.31812/0564/2250.

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The role of neural network modeling in the learning сontent of special course “Foundations of Mathematic Informatics” was discussed. The course was developed for the students of technical universities – future IT-specialists and directed to breaking the gap between theoretic computer science and it’s applied applications: software, system and computing engineering. CoCalc was justified as a learning tool of mathematical informatics in general and neural network modeling in particular. The elements of technique of using CoCalc at studying topic “Neural network and pattern recognition” of the special course “Foundations of Mathematic Informatics” are shown. The program code was presented in a CofeeScript language, which implements the basic components of artificial neural network: neurons, synaptic connections, functions of activations (tangential, sigmoid, stepped) and their derivatives, methods of calculating the network`s weights, etc. The features of the Kolmogorov–Arnold representation theorem application were discussed for determination the architecture of multilayer neural networks. The implementation of the disjunctive logical element and approximation of an arbitrary function using a three-layer neural network were given as an examples. According to the simulation results, a conclusion was made as for the limits of the use of constructed networks, in which they retain their adequacy. The framework topics of individual research of the artificial neural networks is proposed.
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Tarko, Andrew P., Mario A. Romero, Vamsi Krishna Bandaru, and Cristhian Lizarazo. TScan–Stationary LiDAR for Traffic and Safety Applications: Vehicle Interpretation and Tracking. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317402.

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To improve traffic performance and safety, the ability to measure traffic accurately and effectively, including motorists and other vulnerable road users, at road intersections is needed. A past study conducted by the Center for Road Safety has demonstrated that it is feasible to detect and track various types of road users using a LiDAR-based system called TScan. This project aimed to progress towards a real-world implementation of TScan by building two trailer-based prototypes with full end-user documentation. The previously developed detection and tracking algorithms have been modified and converted from the research code to its implementational version written in the C++ programming language. Two trailer-based TScan units have been built. The design of the prototype was iterated multiple times to account for component placement, ease of maintenance, etc. The expansion of the TScan system from a one single-sensor unit to multiple units with multiple LiDAR sensors necessitated transforming all the measurements into a common spatial and temporal reference frame. Engineering applications for performing traffic counts, analyzing speeds at intersections, and visualizing pedestrian presence data were developed. The limitations of the existing SSAM for traffic conflicts analysis with computer simulation prompted the research team to develop and implement their own traffic conflicts detection and analysis technique that is applicable to real-world data. Efficient use of the development system requires proper training of its end users. An INDOT-CRS collaborative process was developed and its execution planned to gradually transfer the two TScan prototypes to INDOT’s full control. This period will be also an opportunity for collecting feedback from the end user and making limited modifications to the system and documentation as needed.
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