space trajectory
Hybrid behavioural-based multi-objective space trajectory optimization
... in space trajectory design: Gage et ...low-thrust trajectory design [15, 16], Gurfil et ...low-thrust trajectory design [18], and Dachwald et ...
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On testing global optimization algorithms for space trajectory design
... test cases, and an analysis of the relationship between the heuristics implemented in some global optimization algorithms and the main characteristics of the test cases under investigation. The identification of common ...
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An inflationary differential evolution algorithm for space trajectory optimization
... In this paper we define a discrete dynamical system that governs the evolution of a population of agents. From the dynamical system, a variant of Differential Evolution is derived. It is then demonstrated that, under ...
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Analysis of some global optimization algorithms for space trajectory design
... In theory, given a limited computational effort, we would like to know the probability that an optimization algorithm A finds the global optimum of a given problem p. However, such a probability does not necessarily ...
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Discrete Mechanics and Optimal Control for Space Trajectory Design
... this trajectory, presented by Koon, Lo, Marsden, and Ross [27, 28], utilized differential correction to generate a tra- jectory with a small, mid-course ∆V of 34 m/s valid for the real dynamics of the solar system ...
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Inverse dynamics and trajectory tracking control of a new six degrees of freedom spatial 3-RPRS parallel manipulator
... task-space trajectory tracking control ...The trajectory planner provides the desired task-space coordinates namely time trajectories of the task-space position, velocity, and ...
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Correcting the Variations of BOLD Signal Due to Susceptibility Gradients and Its Application
... If all tissue had the same susceptibility, then there will be no susceptibility-in- duced magnetic field gradients and no wrong echo time. However, in real cases, there are gradients in the magnetic field due to magnetic ...
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Ascent trajectory optimisation for a single-stage-to-orbit vehicle with hybrid propulsion
... difficult space trajectory design problems, for instance those where the search space has a (multi) funnel-like ...search space, resulting in a variable number of solution ...
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Testing approaches for global optimization of space trajectories
... of space trajectory design problems can be found in two studies by the University of Reading [5] and by the University of Glasgow ...in space trajectory ...
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Vol 62, No 3 (2019)
... in space on a certain trajectory at a certain ...(space, trajectory and speed - singular if it is a single-degree or plural system, if the material system has several degrees of freedom ...
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FLEXIBLE SHARING IN DHT BASED P2P NETWORKS USING METADATA OF RESOURCE
... three-dimensional space is applied to the singularity analysis, coordinate of all possible stable positions are substituting into the Jacobian, position-singular points under given orientation condition are ...
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Research and experiment of a novel flower transplanting device using hybrid-driven mechanism
... Figure 14 Comparison of theoretical and simulation trajectories To ensure the experimental effect and the motion accuracy of the mechanism, the present study uses a servomotor to simulate the uniform motion of a ...
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Optimized design and experiments of a rotary-extensive-type flowerpot seedling transplanting mechanism
... The objective of this work was to develop a structurally simple and low-cost flowerpot seedling transplanting mechanism using the mechanical principle that is capable of satisfying flowerpot transplanting requirements, ...
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Detecting Noise in Chaotic Signals through Principal Component Matrix Transformation
... In order to find the measure that is more sus- ceptible to noise-alteration of data vectors di- rectional distribution in p-subspace, we refer to equivalent formulation of PCA as a process that defines m orthonormal ...
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Mixing quantum and classical mechanics
... where k 8 and x 8 are the n-dimensional classical momentum and position vectors. Under this constraint the quantum part of the mixed distribution remains a pure state at all times, and the classical part is always ...
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Optimization of Adaptation - A Multi-objective Approach for Optimizing Changes to Design Parameters
... a trajectory, and its resulting perfor- mances in the objective space (Error, Cost), as defined previously, are trajec- tories as ...each trajectory by an auxiliary func- tion ...
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Rare behavior of growth processes via umbrella sampling of trajectories
... in trajectory space that concentrates trajectories near a desired region in order parameter space; see also Appendix ...(b) Trajectory ensembles of the coin-toss model and of its reference ...
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Physical Modeling of economic systems: Classical and Quantum Economies
... trajectories p(t)) to the moving of material particles of the physical sys- tem (described by trajectories x(t)), which is also subject to a certain principle of maximization. This is what our confidence in conceptual ...
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A general framework for using aggregation in visual exploration of movement data
... In the S×S-aggregation, the moves are grouped only according to their origin and destination places irrespective of the time when they occurred. To take into account also the time, the whole time span is divided into ...
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A Bayesian Mixed-Effects Model to Learn Trajectories of Changes from Repeated Manifold-Valued Observations
... In Yang et al. (2011) and Delor et al. (2013), the authors addressed this problem by introducing time shifts in their statistical analysis. In Durrleman et al. (2009, 2013), time reparametrizations called time warps ...
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