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Artykuły w czasopismach na temat "Trajectoire de lanceur"
Maqueda, Francis. "L’angoisse du lanceur dans la trajectoire du poids". Santé mentale au Québec 14, nr 1 (19.10.2006): 45–53. http://dx.doi.org/10.7202/031487ar.
Pełny tekst źródłaKida, T., K. Matsuzaki, I. Yokota, N. Kawase, K. Masatoshi, H. Inoue, K. Yuji i in. "POS0875 LATENT TRAJECTORY MODELING OF PULMONARY ARTERY PRESSURE IN SYSTEMIC SCLEROSIS: A RETROSPECTIVE COHORT STUDY". Annals of the Rheumatic Diseases 81, Suppl 1 (23.05.2022): 732.2–733. http://dx.doi.org/10.1136/annrheumdis-2022-eular.2192.
Pełny tekst źródłaQuincy-Lefebvre, Pascale. "Les campagnes de presse : un creuset militant pour l'enfance. L'engagement d'Alexis Danan, reporter à Paris-Soir dans les années trente." Revue d’histoire de l’enfance « irrégulière » N° 13, nr 1 (1.01.2011): 25–43. http://dx.doi.org/10.3917/rhei.013.0025.
Pełny tekst źródłaHundert, Amos, Christy Woolcott, Jon Dorling, Britney Benoit i Marsha Campbell-Yeo. "Classification of Individual Pain Response Trajectories Following Medically Indicated Heel Lances in Preterm Infants During Their NICU Admission". Clinical Journal of Pain 38, nr 3 (17.12.2021): 151–58. http://dx.doi.org/10.1097/ajp.0000000000001011.
Pełny tekst źródłaLaidlaw, Sheonad, i Emma Carduff. "29 Multi-disciplinary palliative care for men living with duchenne: a qualitative interview study". BMJ Supportive & Palliative Care 8, nr 3 (wrzesień 2018): 370.3–371. http://dx.doi.org/10.1136/bmjspcare-2018-mariecurie.29.
Pełny tekst źródłaKwok, Kaitlyn, Neha Sati, Louis Dron i Srinivas Murthy. "Data flow within global clinical trials: a scoping review". BMJ Global Health 7, nr 4 (kwiecień 2022): e008128. http://dx.doi.org/10.1136/bmjgh-2021-008128.
Pełny tekst źródłaTong, Xinting, Xiaohui Zhang, Rui Feng, Jinhu Lin i Hua Wang. "Numerical simulation of continuous bubbles motion behavior with different lance spacings". Thermal Science, nr 00 (2022): 204. http://dx.doi.org/10.2298/tsci220813204t.
Pełny tekst źródłaBeck, Douglas L., i Jedidiah J Grisel. "Cognitive screenings in otolaryngology? The time has come". Journal of Otolaryngology-ENT Research 14, nr 2 (2022): 56–60. http://dx.doi.org/10.15406/joentr.2022.14.00507.
Pełny tekst źródłaBrulois, Vincent. "S’engager pour engager : dynamique professionnelle des communicateurs internes". Revue Communication & professionnalisation, nr 7 (1.02.2019): 10–28. http://dx.doi.org/10.14428/rcompro.v7i1.18163.
Pełny tekst źródłaZhang, Yujie, i Chaoran Yu. "Bibliometric Evaluation of Publications (2000-2020) on the Prognosis of Gastric Cancer". INQUIRY: The Journal of Health Care Organization, Provision, and Financing 58 (styczeń 2021): 004695802110560. http://dx.doi.org/10.1177/00469580211056015.
Pełny tekst źródłaRozprawy doktorskie na temat "Trajectoire de lanceur"
Nayet, Aymeric. "Improvement of a trajectory optimization software for future Ariane missions". Electronic Thesis or Diss., Sorbonne université, 2022. http://www.theses.fr/2022SORUS591.
Pełny tekst źródłaThis thesis work is about the improvement of an ArianeGroup in-house software dedicated to the optimization of launcher trajectories. The original version is able to find a minimum consumption trajectory for an upper stage of a three-stage launcher outside the atmosphere in one or two boosts through a fully automatic method. The goal is to build on this existing work to create a method capable of finding an upper stage trajectory for a two-stage launcher. The specificity is that the stage has a lower initial velocity, a heavier mass and it is ignited at a lower altitude. The improvements also concern the addition of a maximum thermal flux constraint, a ballistic duration constraint and a fairing jettisoning constraint on a thermal flux criterion. Moreover, the new software is now able to target different combinations of orbital parameters. We take advantage of the work done on two-stage launchers to make the software capable of jettisoning a lower stage and thus optimizing the transfer of a three-stage launcher since the ejection of boosters. All these improvements are based on subsequent mathematical developments and novelties about hybrid optimal control problems, in particular when the dynamics of the problem is that of the flight of a launcher
Cerf, Max. "Optimisation de trajectoires spatiales. Vol d'un dernier étage de lanceur - Nettoyage des débris spatiaux". Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00736748.
Pełny tekst źródłaCerf, Max. "Optimisation de trajectoires spatiales : vol d’un dernier étage de lanceur, nettoyage des débris spatiaux". Paris 6, 2012. http://www.theses.fr/2012PA066367.
Pełny tekst źródłaThe work addresses two space trajectories optimization problems : the flight of a launcher upper stage and the collecting of space debris. For these two problems the goal is to develop resolution methods and softwares usable in an industrial framework. Flight of a launcher upper stage. For the problem of a launcher upper stage flight, two continuation approaches are envisioned from models simplifications. The first approach consists in solving the flat Earth problem with uniform gravity, then to come back to the round Earth problem through a double continuation on the gravity and on the earth curvature. The second approach consists in solving the impulsive problem, corresponding to an infinite thrust level, then to come back to the continuous thrust problem through a continuation on the thrust level. The goal is to define a solving procedure as automatic as possible for various instances of the real problem : launcher configuration, targeted orbit. Space debris collecting. The selection of the debris and the visiting order is a shortest path problem in a time-dependent valuated graph. A generic strategy reduces the optimal control problem to a nonlinear programming problem of finite dimension, which can be coupled to the path problem. A local linearization around an initial solution allows to set up a Branch and Bound algorithm. The reference solution is then updated with the linearized solution. Iterating on the linearization-resolution process from the pre-optimized initialization allows converging to the solution of the global problem
Vachon, Alexandre. "Trajectographie d'un lanceur de satellites basée sur la commande prédictive". Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/29554/29554.pdf.
Pełny tekst źródłaThis thesis deals with the exo-atmospheric trajectory of a space launcher. The solution is obtained by solving a constrained optimization problem : the two-point boundary value problem. The solution is the required actions to reach the desired position and velocity while consuming the least energy as possible. These actions must comply with the constraints imposed by the dynamics and the structure of the vehicle. Also, for a space launcher, the control is limited to the thrust orientation. To solve this problem, this project is divided into three distinct parts : modeling the dynamics, obtaining a reference trajectory and the guidance function. The first part, the modeling, is the definition of an accurate and realistic model of the space launcher translational dynamics. Therefore, it requires the application of Newton's second law on the launcher center of mass. In this thesis, this is carried out using three different representations. The representation using a full quaternion is new to this field of application and fills the hole between the two others. With the model of the vehicle to be guided, it becomes possible to define a reference trajectory governed by this model. To do it, this project proposes a direct optimization where the thrust orientation is discretized and becomes the unknown of the optimization problem. The criterion of this optimization problem includes terms for a priori knowledge of the trajectory improving the convergence properties of the optimization. The optimization problem also includes constraints, relaxed by slack variables, on the injection orbit. The resulting trajectory is used as reference in a trajectory tracking guidance function. The trajectory tracking is a way to circumvent the resolution of the two-point boundary value problem, which accelerates the resolution to fit in on-board computing capabilities. The algorithms developed in this thesis are based on predictive control in which the outputs of predictive model are the instantaneous orbital parameters of the trajectory. A first algorithm uses a non-linear model for prediction while two others are rather based on a linear time-varying representation and a linear fractional representation. These three algorithms are compared to a conventional space launcher guidance solution, which directly solves the two-point boundary value problem. Even if the developped algorithms give a more accurate orbit and a less consuming trajectory, their computationnal time and poor robustness properties do not make them a viable alternative to the comparison solution.
Części książek na temat "Trajectoire de lanceur"
"lance olsen". W Divergent Trajectories, 160–81. Ohio State University Press, 2017. http://dx.doi.org/10.2307/j.ctv1503fwj.15.
Pełny tekst źródłaTrouillet, Pierre-Yves. "Les lances de Muruga à Maurice. Trajectoires d’un hindouisme tamoul". W Indianité et créolité à l’île Maurice, 169–97. Éditions de l’École des hautes études en sciences sociales, 2014. http://dx.doi.org/10.4000/books.editionsehess.22882.
Pełny tekst źródłaStreszczenia konferencji na temat "Trajectoire de lanceur"
David, Regis A., i Brian D. Jensen. "Modeling DNA Motion Under Electrostatic Repulsion Within a Living Cell". W ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87413.
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