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Literatura académica sobre el tema "Evasive Manoeuvres"

Autor: Grafiati

Publicado: 10 de marzo de 2023

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Artículos de revistas sobre el tema "Evasive Manoeuvres"

Ahmad, Sharon. "Evasive manoeuvres". Nature Reviews Microbiology 5, n.º 9 (septiembre de 2007): 659. http://dx.doi.org/10.1038/nrmicro1735.

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Ahmad, Sharon. "Evasive manoeuvres". Nature Reviews Immunology 7, n.º 9 (septiembre de 2007): 660–61. http://dx.doi.org/10.1038/nri2157.

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Szlapczynski, Rafal, Przemyslaw Krata y Joanna Szlapczynska. "A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations". Journal of Advanced Transportation 2018 (10 de octubre de 2018): 1–19. http://dx.doi.org/10.1155/2018/3984962.

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A ship encounter can be considered safe if neither of ships’ domains (defined areas around ships) is intruded by other ships. Published research on this includes optimising collision avoidance manoeuvres fulfilling domain-based safety conditions. However, until recently there was no method, using ship’s domain to determine exact moment when a particular collision avoidance manoeuvre can still be successfully performed. The authors have already proposed such method for give-way encounters. In the paper, documenting continuation of the research, another kind of scenarios is considered. This paper is focused on situations where the own ship is the stand-on one and the target is supposed to manoeuvre. The presented method uses a ship’s dynamics model to compute distance necessary for a manoeuvre successful in terms of avoiding domain violations. Additionally, stability-related phenomena and their impact on possible manoeuvres in heavy weather are taken into account. The method and applied models are illustrated in a series of simulation results. The simulations cover various examples of stand-on situations, including encounters in heavy weather conditions. Discussed manoeuvres may be limited to course alteration or may combine turns with speed reduction.

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Happee, Riender, Christian Gold, Jonas Radlmayr, Sebastian Hergeth y Klaus Bengler. "Take-over performance in evasive manoeuvres". Accident Analysis & Prevention 106 (septiembre de 2017): 211–22. http://dx.doi.org/10.1016/j.aap.2017.04.017.

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Tseng, HE, J. Asgari, D. Hrovat, P. van der Jagt, A. Cherry y S. Neads. "Evasive manoeuvres with a steering robot". Vehicle System Dynamics 43, n.º 3 (marzo de 2005): 199–216. http://dx.doi.org/10.1080/0042311042000266775.

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Graffstein, Jerzy. "The Influence of Airplane’s Dynamics and Its’ State of Flight on Safety of an Evasive Manoeuvre Performed to Avoid Moving Obstacles". Pomiary Automatyka Robotyka 26, n.º 1 (21 de marzo de 2022): 33–39. http://dx.doi.org/10.14313/par_243/33.

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The exact identification of essential factors affecting the course of evasive manoeuvre, that has been computed to avoid a collision with moving obstacles, is necessary to ensure a safe passing by a moving obstacle. At the same time, during the evasive manoeuvre the pre-defined separation between the airplane and obstacles is required. The matter of presented work is defined as the analysis of influence of factors on execution of anti collision manoeuvre taking into account deformation of flight trajectory and changes of time histories of distance from the airplane to detected obstacles. Attention has been focused on internal interactions, resulting from the essential changes of the airplane’s behaviour. Discussion has been illustrated by selected results of computer simulations, executed for typical manoeuvres performed to avoid obstacles, while affected by adverse impacts of selected factors. The appropriate guidelines have been proposed, that should counteract these adverse effects on realisation of computed manoeuvre.

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Evdokimenkov, Veniamin N., Dmitriy A. Kozorez y Lev N. Rabinskiy. "Unmanned aerial vehicle evasion manoeuvres from enemy aircraft attack". Journal of the Mechanical Behavior of Materials 30, n.º 1 (1 de enero de 2021): 87–94. http://dx.doi.org/10.1515/jmbm-2021-0009.

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Abstract One of the most important problems associated with the combat use of unmanned aerial vehicles remains to ensure their high survivability in conditions of deliberate countermeasures, the source of which can be both ground-based air defence systems and fighter aircraft. For this reason, the study and optimization of evasive manoeuvres of an unmanned aerial vehicle from an enemy aircraft attack remains relevant. Based on the game approach, the authors of this paper propose an algorithm for guaranteeing control of the trajectory of an unmanned aerial vehicle, which ensures its evasion from an enemy air attack. The study of the influence of tactically significant indicators of the manoeuvrability of an unmanned aerial vehicle on the effectiveness of the evasion manoeuvre was carried out. The model predictions are presented, reflecting the degree of influence of unmanned aerial vehicle manoeuvring capabilities on achieving a positional advantage when solving the problem of evading air enemy attack.

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Stone, Louise. "Evasive manoeuvres from bacteria in urinary tract infection". Nature Reviews Urology 11, n.º 9 (19 de agosto de 2014): 488. http://dx.doi.org/10.1038/nrurol.2014.201.

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Johnsson, Carl y Aliaksei Laureshyn. "Identification of evasive manoeuvres in traffic interactions and conflicts". Traffic Safety Research 3 (20 de septiembre de 2022): 000012. http://dx.doi.org/10.55329/erqd8683.

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The study presents a simple and easy to implement method for detection of the evasive action start in traffic interactions. The method is based on comparison of the studied trajectory with a reference set of ‘unhindered’ trajectories, interpreting the start of evasive action as the moment when no more similarities can be found. The suggested algorithm performs well for primary interactions when road users arrive in an unhindered state. It fails, however, in case of secondary interactions. Explorative application of the method on a large dataset of normal and conflict traffic situations concludes that traffic conflicts occur more frequently in secondary interactions, presumably due to higher cognitive load on the involved road users. Despite the limitations, the method can be used both for the safety studies based on traffic conflicts and for more general quantification and visualisation of the road user behaviour.

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Dawson, J. W., W. Kutsch y R. M. Robertson. "Auditory-evoked evasive manoeuvres in free-flying locusts and moths". Journal of Comparative Physiology A: Sensory, Neural, and Behavioral Physiology 190, n.º 1 (1 de enero de 2004): 69–84. http://dx.doi.org/10.1007/s00359-003-0474-3.

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Tesis sobre el tema "Evasive Manoeuvres"

Happee, Riender, Christian Gold, Jonas Radlmayr, Sebastian Hergeth y Klaus Bengler. "Take-over performance in evasive manoeuvres". Elsevier, 2017. https://publish.fid-move.qucosa.de/id/qucosa%3A72267.

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We investigated after effects of automation in take-over scenarios in a high-end moving-base driving simulator. Drivers performed evasive manoeuvres encountering a blocked lane in highway driving. We compared the performance of drivers 1) during manual driving, 2) after automated driving with eyes on the road while performing the cognitively demanding n-back task, and 3) after automated driving with eyes off the road performing the visually demanding SuRT task. Both minimum time to collision (TTC) and minimum clearance towards the obstacle disclosed a substantial number of near miss events and are regarded as valuable surrogate safety metrics in evasive manoeuvres. TTC proved highly sensitive to the applied definition of colliding paths, and we prefer robust solutions using lane position while disregarding heading. The extended time to collision (ETTC) which takes into account acceleration was close to the more robust conventional TTC. In line with other publications, the initial steering or braking intervention was delayed after using automation compared to manual driving. This resulted in lower TTC values and stronger steering and braking actions. Using automation, effects of cognitive distraction were similar to visual distraction for the intervention time with effects on the surrogate safety metric TTC being larger with visual distraction. However the precision of the evasive manoeuvres was hardly affected with a similar clearance towards the obstacle, similar overshoots and similar excursions to the hard shoulder. Further research is needed to validate and complement the current simulator based results with human behaviour in real world driving conditions. Experiments with real vehicles can disclose possible systematic differences in behaviour, and naturalistic data can serve to validate surrogate safety measures like TTC and obstacle clearance in evasive manoeuvres.

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Kittane, Santusht Vasuki y Preetham Harinath. "An evasive manoeuvre assist function for over-reactive drivers". Thesis, KTH, Fordonsdynamik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-243293.

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Previous studies have shown that many drivers are unable to provide the right amount of steering torque when facing an imminent collision with an upcoming obstacle. In some cases, drivers under-react i.e., they provide too low steering inputs and thus collide with the obstacle in front; in other cases, drivers might apply a higher steering input than necessary, potentially resulting in the vehicle leaving the road or losing stability. The EMA function is an active safety feature which has the sole objective of providing steering torque interference when performing such a manoeuvre. The motivation for the thesis work is to overcome some limitations of the existing MA function which does not incorporate the ability to differentiate driver reactions. In this thesis, an Evasive Manoeuvre Assist (EMA) function is designed to adapt to both types of the drivers, by an optimised steering torque overlay. The existing current EMA function is always amplifying the driver steering inputs using a feed-forward controller. The focus of this thesis work is to identify and dene a proper steering sequence reference model for closed-loop feedback control design. A simple single-point preview model is designed first to calculate the reference steering angle. A few test scenarios are set-up using the IPG CarMakerTMsimulation tool. The reference model is then tuned with respect to the amplitude and frequency by batch simulations to obtain the optimal steering prole. A feedback controller is then designed using this reference model. The controller is implemented in a real-time environment, using a Volvo rapid-prototype test vehicle. Preliminary variation tests have shown that the developed controller can enhance both an over-reacting and under-reacting driver's performance during an evasive manoeuvre, by applying assistance/resistance EPAS torque timely. The designed EMA function is shown to accommodate different driver reactions and provide intuitive torque interference. As opposed to the earlier notion that the EMA function only assists the driver with an additional steering wheel torque, it was shown that the optimal steering torque overlay might be in the form of assistance or resistance.

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Leyva, Pedro Huertas. "Study of motorcyclist’s behaviour during emergency braking in the perspective of training for safety". Doctoral thesis, 2018. http://hdl.handle.net/2158/1129272.

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The main aim of the PhD activity here presented is to understand PTW’s riders behaviour in risky scenarios, when the time to collision is short and evasive manoeuvers are required. This research focus on the identification of the key components of control skills, together with perception skills, required for a high performance and also for effective training interventions that can reduce the number of PTW collisions or mitigate their consequences. Preliminary results from this research based on in-depth accident data revealed collision at intersections as one of the biggest threats to motorcyclists and weak braking during emergency events as one of the most common reactions. Furthermore, the first part of the research showed that different patterns can be identified among riders after analyzing two naturalistic studies from riders on Powered Two Wheelers scooter-style in Florence and cyclists on e-bike in Gothenburg. The thesis presents a procedure designed to study the performance of riders in emergency situations based on: interaction with a constantly changing environment, dynamics of a two-wheeled vehicle, and capability of the rider. Results from field experiments in a controlled scenario with riders of different level of competencies revealed that the procedure defined can detect patterns from high skilled riders different from low skilled riders. In addition, the results provided key values that can be used to level skill classification. The characterization of the patterns of the riders of different skills is presented including two models, one that predicts the braking performance and another model that estimates the risk of loss control of the rider, both based on the rider’s interaction with the vehicle. Finally a tool interface based on the performance models is designed to support training tasks prescribing objective feedback to the riders to enhance training for safety. The thesis presents some directions for future research in skills acquisition, naturalistic studies and applications for training that stem from the results. Furthermore, the outcomes of this research can support providing insights for future designs of safety systems, such as advanced braking systems tailored to the patterns of each rider.

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Capítulos de libros sobre el tema "Evasive Manoeuvres"

van Lookeren Campagne, Gijs y Derong Yang. "A Nonlinear Model Predictive Control Based Evasive Manoeuvre Assist Function". En Lecture Notes in Mechanical Engineering, 1166–74. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-07305-2_108.

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Yang, D., M. Jonasson, T. Halleröd y R. Johansson. "Evaluation of an evasive manoeuvre assistance system at imminent side collisions". En Advanced Vehicle Control AVEC’16, 55–60. CRC Press/Balkema, P.O. Box 11320, 2301 EH Leiden, The Netherlands, e-mail: Pub.NL@taylorandfrancis.com, www.crcpress.com – www.taylorandfrancis.com: Crc Press, 2016. http://dx.doi.org/10.1201/9781315265285-10.

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Harinath, Preetham, Santusht Vasuki Kittane, Derong Yang, Lars Drugge y Mats Jonasson. "An Adapted Evasive Manoeuvre Assist Function for Over-Reactive and Under-Reactive Drivers". En Lecture Notes in Mechanical Engineering, 1017–26. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38077-9_118.

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Crawford, Dorothy H. "7. Persistent viruses". En Viruses: A Very Short Introduction, 75–91. Oxford University Press, 2018. http://dx.doi.org/10.1093/actrade/9780198811718.003.0008.

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‘Persistent viruses’ explains how some viruses have evolved strategies for overcoming immune mechanisms and survive inside their host for prolonged periods, even for a lifetime. Evasion strategies encompass three basic manoeuvres: finding a niche in which to hide from immune attack, manipulating immune processes to benefit the virus, and outwitting immune defences by mutating rapidly. Most persistent viruses have evolved to cause mild or even asymptomatic infections, since a life-threatening disease would not only be detrimental to the host, but would also deprive the virus of its home. The herpesvirus family, retrovirus family, HIV-1, and hepatitis viruses are described in detail.

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Actas de conferencias sobre el tema "Evasive Manoeuvres"

Bortoluzzi, Daniele, Francesco Biral, Enrico Bertolazzi, Paolo Bosetti y Fabrizio Zendri. "Influence of Vehicle Model Complexity in Autonomous Emergency Manoeuvre Planning". En ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68659.

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In this paper the effectiveness of an optimal reference manoeuvre is analysed w.r.t. the complexity of the vehicle model used within the optimal control algorithm. The optimal reference manoeuvre is computed by means of a Nonlinear Receding Horizon planning (NRHP) strategy which is based on a simplified vehicle model. The reference manoeuvre is tracked by a controller implemented on a low level faster loop. The system is able to perform autonomously lane change and obstacle avoidance manoeuvres by tracking the computed reference one. The quality of the performed manoeuvres depends on the reference manoeuvre and consequently on the vehicle model used by the NRHP. For manoeuvres with low or mild lateral accelerations reduced order models might yield realistic and reliable reference manoeuvres. However, critical conditions (e.g. evasive manoeuvre) require a manoeuvre planner able to catch highly non-linear vehicle dynamics that characterizes such situations. On the other hand, being the NRHP computational cost generally high and related to the number of equations of the mathematical model, a trade-off between computational efficiency and model complexity is required. The work analyses the reference manoeuvres produced by two vehicle models of increasing complexity used as reference within the NRHP. Optimal planner performance evaluation on evasive manoeuvre in critical conditions will be presented with simulations results.

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Anderson, D. y D. G. Thomson. "Simulating effectiveness of helicopter evasive manoeuvres to RPG attack". En SPIE Defense, Security, and Sensing, editado por Eric J. Kelmelis. SPIE, 2010. http://dx.doi.org/10.1117/12.849520.

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