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Relevant bibliographies by topics / Variable transport delay

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Academic literature on the topic 'Variable transport delay'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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Journal articles on the topic "Variable transport delay"

1

Leonov, Rafail. "Control objects with variable transport delay." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 1 (February 17, 2021): 122–30. http://dx.doi.org/10.21440/0536-1028-2021-1-122-130.

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Research aim is to analyze a class of automatic control systems at mining and concentrating facilities, where controlling action is the consumption of fuel or substance by a transporting body in order to develop recommendations on stability and control quality improvement. Research methodology consists in working out a model of automatic control system and studying the infl uence of varying transportation delay on the model, which arises in the process of stabilizing the output value of the system of automatic control. The RMS error of output value control was measured on the system’s model wh

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Myers, V., and B. Nolan. "P054: Delay in decision to transfer time for critically ill patients transported by air ambulance in Ontario." CJEM 22, S1 (2020): S83. http://dx.doi.org/10.1017/cem.2020.260.

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Introduction: Delays in definitive management of critically ill patients are known to drive poor clinical outcomes. A scarcely studied time period in interfacility transfer is the time between initial patient presentation and the decision to transfer. This study seeks to identify patient, environmental and institutional characteristics associated with delays in decision to transfer critically ill patients by air ambulance to a tertiary care centre. Methods: Patients >18 years old who underwent emergent air ambulance interfacility transport to a tertiary care centre were included. Patient re

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Micic, Aleksandar, and Miroslav Matausek. "Series pid pitch controller of large wind turbines generator." Serbian Journal of Electrical Engineering 12, no. 2 (2015): 183–96. http://dx.doi.org/10.2298/sjee1502183m.

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For this stable process with oscillatory dynamics, characterized with small damping ratio and dominant transport delay, design of the series PID pitch controller is based on the model obtained from the open-loop process step response, filtered with the second-order Butterworth filter Fbw. Performance of the series PID pitch controller, with the filter Fbw, is analyzed by simulations of the set-point and input/output disturbance responses, including simulations with a colored noise added to the control variable. Excellent performance/robustness tradeoff is obtained, compared to the recently pro

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Yuan, Cao, and Ya Qin Li. "A New Delay-Based Congestion Control for Ad-Hoc Wireless Network." Applied Mechanics and Materials 160 (March 2012): 223–26. http://dx.doi.org/10.4028/www.scientific.net/amm.160.223.

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The traditional congestion control mechanism of transport control protocol (TCP) has been proved cannot satisfy the wireless scenario. The extensive research has been done to understand the drawback of TCP in wireless networks. In this paper, we proposed a new congestion control algorithms for mobile ad-hoc networks (MANET) at the TCP sender side which efficiently adapts to the maximum transmission rate of a mobile wireless link, the new algorithms follow the idea of FAST TCP which uses delay as congestion measure. However, FAST TCP has limitations when used over a dynamic mobile wireless link

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Zhao, Jing, and Yu Shan. "An Influencing Parameters Analysis of District Heating Network Time Delays Based on the CFD Method." Energies 12, no. 7 (2019): 1297. http://dx.doi.org/10.3390/en12071297.

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With the expansion of cities, district heating (DH) networks are playing an increasingly important role. The energy consumption due to the time delay caused by the transport of the medium in the DH network is enormous, especially in large networks. The study of time delay is necessary for the operation and optimization of DH networks. Compared with previous studies of constant flow rates and ideal pipeline (without regard to branches, elbows, variable pipe diameters, etc), this paper simulates a DH network in Tianjin University, China, by establishing the actual engineering model in a Computat

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Y. Anad Alsaleem, Maan, Naors Y. Anad Alsaleem, and Nawfal Ali Zakar. "Network Performance Analysis Based on Network Simulator NS-2." Ibn AL- Haitham Journal For Pure and Applied Science 31, no. 2 (2018): 222. http://dx.doi.org/10.30526/31.2.1951.

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NS-2 is a tool to simulate networks and events that occur per packet sequentially based on time and are widely used in the research field. NS-2 comes with NAM (Network Animator) that produces a visual representation it also supports several simulation protocols. The network can be tested end-to-end. This test includes data transmission, delay, jitter, packet-loss ratio and throughput. The Performance Analysis simulates a virtual network and tests for transport layer protocols at the same time with variable data and analyzes simulation results based on the network simulator NS-2.

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Dadashzadeh and Ergun. "An Integrated Variable Speed Limit and ALINEA Ramp Metering Model in the Presence of High Bus Volume." Sustainability 11, no. 22 (2019): 6326. http://dx.doi.org/10.3390/su11226326.

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Under many circumstances, when providing full bus priority methods, urban transport officials have to operate buses in mixed traffic based on their road network limitations. In the case of Istanbul's Metrobus lane, for instance, when the route comes to the pre-designed Bosphorus Bridge, it has no choice but to merge with highway mixed traffic until it gets to the other side. Much has been written on the relative success of implementing Ramp Metering (RM), for example ALINEA (‘Asservissement line´ aire d’entre´ e autoroutie’) and Variable Speed Limits (VSL), two of the most widely-used “merging

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Nishiguchi, Sho, Haruka Inada, Izumi Kitagawa, and Yasuharu Tokuda. "Factors associated with a delayed diagnosis of pulmonary embolism." Diagnosis 3, no. 1 (2016): 37–41. http://dx.doi.org/10.1515/dx-2016-0001.

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AbstractAcute pulmonary embolism (PE) is frequently a fatal disease. The clinical presentation of PE is variable and frequently nonspecific, and there is commonly a diagnostic delay. We aimed to investigate factors associated with the delay in the diagnosis of PE.Data from patients with PE were collected from January 2011 to December 2013 in an acute care teaching hospital. Time-to-diagnosis, evaluated by obtaining a diagnostic computed tomography scan, was then analyzed by the Cox proportional hazard model for examining factors associated with time to the diagnosis of PE. Independent variable

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Yao, Ronghan, Wensong Zhang, and Meng Long. "MODELLING AND SENSITIVITY ANALYSIS OF UNCOORDINATED PAIRED INTERSECTIONS WITH LEFT-TURN BAYS." Transport 35, no. 3 (2020): 283–99. http://dx.doi.org/10.3846/transport.2020.12271.

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Left-turn bays are often installed on the road segment between paired intersections. Such left-turn bays may reduce the approach capacities and impact on one another. Four optimization models are put forward for uncoordinated paired intersections with left-turn bays. The phase effective green times and the left-turn bay lengths are the decision variables, maximizing the intersection capacities, minimizing the intersection delays and both of them are respectively regarded as different objective functions, and minimizing the total delay for paired intersections is viewed as another objective fun

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Hampson, Michele. "Raising standards in relation to Section 136 of the Mental Health Act 1983." Advances in Psychiatric Treatment 17, no. 5 (2011): 365–71. http://dx.doi.org/10.1192/apt.bp.110.008250.

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SummaryDespite the guidance published in revised Codes of Practice and by the Royal College of Psychiatrists, implementation of Section 136 of the Mental Health Act 1983 is still variable. Government funding in England to establish places of safety in psychiatric facilities has been effective but custody suites are still used excessively, especially for those who are brought in intoxicated. Patients feel criminalised by this use of custody suites and by the use of police vehicles rather than ambulance transport for conveyance to the place of safety. There is often a delay in commencing the ass

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Dissertations / Theses on the topic "Variable transport delay"

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Laurain, Thomas. "Synthèse de contrôleurs avancés pour les systèmes quasi-LPV appliqués au contrôle de moteurs automobiles." Thesis, Valenciennes, 2017. http://www.theses.fr/2017VALE0033/document.

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Ma thèse en automatique s’inscrit dans la thématique de recherche «Transport» du LAMIH. L’objectif est d’améliorer le fonctionnement des moteurs thermiques (essence), notamment en réduisant la consommation et la pollution. Face à cet enjeu écologique et économique, et compte tenu des nouvelles normes et des stratégies court-termistes de l’industrie (scandale Volkswagen...), de nouveaux contrôleurs doivent être conçus pour piloter l’arrivée d’air et d’essence au sein du moteur. En considérant l’aspect hautement non-linéaire du système, la représentation Takagi-Sugeno et le background théorique

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Sunnegårdh, Erik. "Adaptiv katalysatormodell för reglering." Thesis, Vehicular Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1459.

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<p>This master’s thesis describes the development of a model of the catalystsystem aiming at control by an MPC. A well functioning model, which is suitable in control purpose, is important while emission legislation become more and more hard to fulfill for the car manufacturers. Much research has been done in the field of physical modeling of the system, but in this work a linear adaptive time discrete ARX-model is developed and validated.</p><p>The systems tendency to change its dynamic during usage implies that the model must be adaptive. The developed model proved to be well functioning and

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Duquette, Jean. "The potential benefits of combined heat and power based district energy grids." Thesis, 2017. http://hdl.handle.net/1828/7818.

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In this dissertation, an assessment is conducted of the potential benefits of combined heat and power (CHP) based district energy (DE) grids in energy systems of different scale having significant fossil fuel fired electrical generation capacity. Three studies are included in the research. In the first study, the potential benefits of expanding CHP-based DE grids in a large scale energy system are investigated. The impacts of expanding wind power systems are also investigated and a comparison between these technologies is made with respect to fossil fuel utilization and CO2 emissions. A mo

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Books on the topic "Variable transport delay"

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Huyakorn, P. S. VAM2D--variably saturated analysis model in two dimensions: Version 5.0 with hysteresis and chained decay transport : documentation and user's guide. Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1989.

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Huyakorn, P. S. VAM2D--variably saturated analysis model in two dimensions: Version 5.0 with hysteresis and chained decay transport : documentation and user's guide. Division of Engineering, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1989.

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3

Huyakorn, P. S. VAM2D--variably saturated analysis model in two dimensions: Version 5.2 with hysteresis and chained decay transport : documentation and user's guide. Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1991.

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4

Huyakorn, P. S. VAM2D--variably saturated analysis model in two dimensions: Version 5.2 with hysteresis and chained decay transport : documentation and user's guide. Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1991.

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5

B, Kool J., Wu Y. S, U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Applications., and HydroGeoLogic Inc, eds. VAM2D--variably saturated analysis model in two dimensions: Version 5.2 with hysteresis and chained decay transport : documentation and user's guide. Division of Regulatory Applications, Office of Nuclear Regulatory Research, U.S. Nuclear Regulatory Commission, 1991.

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Book chapters on the topic "Variable transport delay"

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Fodrek, Peter, Michal Blaho, Martin Foltin, Matúš Lichý, and Tomáš Murgaš. "Linux Based Real-Time Control over Industrial Networks." In Handbook of Research on Industrial Informatics and Manufacturing Intelligence. IGI Global, 2012. http://dx.doi.org/10.4018/978-1-4666-0294-6.ch015.

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This chapter deals with industrial networked control systems. These systems are the most modern means of industrial control. The current approach contains several problems. Mostly discussed problem in the control theory is a network-caused variable transport delay problem. On the software point of view there is problem of the system latency, which limits time period of the discrete control. State of art research in hardware part of the system shows that latency source and transport delay variations are caused by unpredictable hardware behavior as well. Another problem is the control system security. This was the case of the Mexico gulf oil rig disaster in 2010, as well as Iran nuclear program three months later the same year, caused by worm attack at its centrifuges. Therein lies the question; how can security issues be avoided? The authors demonstrate how via using GNU/Linux, which solves timing correctness by their project of the plasma cutting machine design.

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Barkouk, Hamid, and El Mokhtar En-Naimi. "Intelligent Transport Systems Services in VANETs and Case Study in Urban Environment." In Innovative Applications of Big Data in the Railway Industry. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-3176-0.ch008.

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The VANET (Vehicular Ad hoc Network) is a collection of mobile nodes forming a temporary network on variable topology, operating without base station and without centralized administration. Communication is possible between vehicles within each other's radio range as well as with fixed components on road side infrastructure. The characteristics of VANET network that distinguishes it from other ad hoc networks, such as high mobility and communication with the infrastructure to support security or comfort applications, have prompted researchers to develop models and mobility specific protocols. The main goal of this chapter is firstly to compare the performance of three Ad hoc routing protocols: OLSR, AODV and DSDV, and secondly to examine the impact of varying mobility, density and pause time on the functionality of these protocols. The results of this chapter demonstrate that AODV have better performance in terms of Throughput and Packets Delivery Rate (PDR), whereas OLSR have best performance in terms of Packet Delivery Time (Delay).

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Zhu, Yang, and Miroslav Krstic. "Full-State Feedback of Uncertain Multi-Input Systems." In Delay-Adaptive Linear Control. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691202549.003.0007.

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This chapter investigates adaptive control for uncertain multi-input LTI systems with distinct discrete actuator delays. In parallel with the single-input case in the third chapter, four types of basic uncertainties come with multi-input LTI time-delay systems. Different combinations of the four uncertainties above result in different design difficulties. For example, when the full-state measurement of the transport PDE state is available, the global stabilization is acquired, whereas when the actuator state is not measurable and the delay value is unknown at the same time, the problem is not solvable globally, since the problem is not linearly parameterized. The chapter then summarizes the different collections of uncertainties for the multi-input case. When some of the four variables are unknown or unmeasured, the basic idea of certainty-equivalence-based adaptive control is to use an estimator (a parameter estimator or a state estimator) to replace the unknown variables in the PDE-based framework in the previous chapter, and carefully select their adaptive update laws based on Lyapunov-based analysis.

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Van Genuchten, M. Th, and E. A. Sudicky. "Recent Advances in Vadose Zone Flow and Transport Modeling." In Vadose Zone Hydrology. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195109900.003.0010.

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The fate and transport of a variety of chemicals migrating from industrial and municipal waste disposal sites, or applied to agricultural lands, is increasingly becoming a concern. Once released into the subsurface, these chemicals arc subject to a large number of simultaneous physical, chemical, and biological processes, including sorption-desorption, volatilization, and degradation. Depending upon the type of organic chemical involved, transport may also be subject to multiphase flow that involves partitioning of the chemical between different fluid phases. Many models of varying degree of complexity and dimensionality have been developed during the past several decades to quantify the basic physicochemical processes affecting transport in the unsaturated zone. Models for variably saturated water flow, solute transport, aqueous chemistry, and cation exchange were initially developed mostly independently of each other, and only recently has there been a significant effort to couple the different processes involved. Also, most solute transport models in the past considered only one solute. For example, the processes of adsorption- desorption and cation exchange were often accounted for by using relatively simple linear or nonlinear Freundlich isotherms such that all reactions between the solid and liquid phases were forced to be lumped into a single distribution coefficient, and possibly a nonlinear exponent. Other processes such as precipitation-dissolution, biodegradation, volatilization, or radioactive decay were generally simulated by means of simple first- and/or zero-order rate processes. These simplifying approaches were needed to keep the mathematics relatively simple in view of the limitations of previously available computers. The problem of coupling models for water flow and solute transport with multicomponent chemical equilibrium and nonequilibrium models is now increasingly being addressed, facilitated by the introduction of more powerful computers, development of more advanced numerical techniques, and improved understanding of the underlying transport processes. One major frustrating issue facing soil scientists and hydrologists in dealing with the unsaturated zone, both in terms of modeling and experimentation, is the overwhelming heterogeneity of the subsurface environment.

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Conference papers on the topic "Variable transport delay"

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Bajonero Canonico, Ezequiel, Ewout van der Laan, Sjirk Koekebakker, and Maarten Steinbuch. "A new Robust Delay-Variable Repetitive Controller with application to media transport in a printer." In 2012 IEEE International Symposium on Intelligent Control (ISIC). IEEE, 2012. http://dx.doi.org/10.1109/isic.2012.6398277.

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Diagne, Mamadou, Nikolaos Bekiaris-Liberis, and Miroslav Krstic. "Time- and State-Dependent Input Delay-Compensated Bang-Bang Control of a Screw Extruder for 3D Printing." In ASME 2015 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/dscc2015-9630.

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We extend the recently developed delay-compensated “Bang-Bang” control design methodology for control of the nozzle output flow rate of isothermal screw-extruder-based 3D printing processes to the non-isothermal case, in which, the viscosity of the material that convects in the extruder chamber varies with time, resulting in periodic fluctuations of the material’s transport speed. We model the dynamics of the material convection in the extruder chamber with a nonlinear system with an input delay that simultaneously depends on the state and the time variable to account for the time variations o

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Laurain, Thomas, Zsofia Lendek, Jimmy Lauber, and Reinaldo M. Palhares. "Transforming variable transport delays into fixed ones: An application to a conveyor belt problem." In 2018 Annual American Control Conference (ACC). IEEE, 2018. http://dx.doi.org/10.23919/acc.2018.8431427.

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Rucker, Gregory G. "Estimating Fate and Transport of Multiple Contaminants in the Vadose Zone Using a Multi-Layered Soil Column and Three-Phase Equilibrium Partitioning Model." In The 11th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2007. http://dx.doi.org/10.1115/icem2007-7150.

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Soils at waste sites must be evaluated for the potential of residual soil contamination to leach and migrate to the groundwater beneath the disposal area. If migration to the aquifer occurs, contaminants can travel vast distances and pollute drinking water wells, thus exposing human receptors to harmful levels of toxins and carcinogens. To prevent groundwater contamination, a contaminant fate and transport analysis is necessary to assess the migration potential of residual soil contaminants. This type of migration analysis is usually performed using a vadose zone model to account for complex g

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Uzol, Oguz, Yi-Chih Chow, Joseph Katz, and Charles Meneveau. "Average Passage Flow Field and Deterministic Stresses in the Tip and Hub Regions of a Multi-Stage Turbomachine." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38598.

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This paper continues our effort to study the dynamics of deterministic stresses in a multistage turbomachine using experimental data. Here we focus on the tip and hub regions and compare them to mid span data obtained in previous studies. The analysis is based on data obtained in PIV measurements performed in the second stage of a two-stage turbomachine. A complete data set is obtained using blades and fluid with matched optical index of refraction. Previous measurements at mid span have shown that at mid span and close to design conditions, the deterministic kinetic energy is smaller than the

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Tomic, Aleksandar, and Shahani Kariyawasam. "Comparison of PIR to PIPESAFE-Based 1% Lethality Zones for Natural Gas Pipelines." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33477.

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A lethality zone due to an ignited natural gas release is often used to characterize the consequences of a pipeline rupture. A 1% lethality zone defines a zone where the lethality to a human is greater than or equal to 1%. The boundary of the zone is defined by the distance (from the point of rupture) at which the probability of lethality is 1%. Currently in the gas pipeline industry, the most detailed and validated method for calculating this zone is embodied in the PIPESAFE software. PIPESAFE is a software tool developed by a joint industry group for undertaking quantitative risk assessments

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Reports on the topic "Variable transport delay"

1

Huyakorn, P. S., J. B. Kool, and J. B. Robertson. VAM2D--Variably saturated analysis model in two dimensions: Version 5. 0 with hysteresis and chained decay transport: Documentation and user's guide. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/5947809.

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