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The optimized stellarator is an attractive concept for which the averaged particle radial drift is zero, and the single particle loss can be significantly reduced. But for the reactor design, global physics such as turbulent transport also…

Plasma Physics · Physics 2026-05-05 Xishuo Wei , Handi Huang , Haotian Chen , Hongxuan Zhu , Zhe Bai , Samuel Williams , Zhihong Lin

One of the fundamental problems in spacecraft trajectory design is finding the optimal transfer trajectory that minimizes the propellant consumption and transfer time simultaneously. We formulate this as a multi-objective optimal control…

Systems and Control · Electrical Eng. & Systems 2022-12-15 Nikolaus Vertovec , Sina Ober-Blöbaum , Kostas Margellos

The main problems in modeling interacting galaxies are the extended parameter space and the fairly high CPU costs of self-consistent N-body simulations. Therefore, traditional modeling techniques suffer from either extreme CPU demands or…

Astrophysics · Physics 2007-05-23 Ch. Theis , Ch. Gerds , Ch. Spinneker

This paper develops a framework that models and optimizes the operations of complex on-orbit servicing infrastructures involving one or more servicers and orbital depots to provide multiple types of services to a fleet of geostationary…

Optimization and Control · Mathematics 2025-08-20 Tristan Sarton du Jonchay , Hao Chen , Onalli Gunasekara , Koki Ho

A deep-space exploration mission with low-thrust propulsion to rendezvous with multiple asteroids is investigated. Indirect methods, based on the optimal control theory, are implemented to optimize the fuel consumption. The application of…

Instrumentation and Methods for Astrophysics · Physics 2016-03-09 Fanghua Jiang , Gao Tang

Recent advances in LLM-guided evolutionary computation, particularly AlphaEvolve (Novikov et al., 2025; Georgiev et al., 2025), have demonstrated remarkable success in discovering novel mathematical constructions and solving challenging…

Neural and Evolutionary Computing · Computer Science 2025-11-25 Valentin Khrulkov , Andrey Galichin , Denis Bashkirov , Dmitry Vinichenko , Oleg Travkin , Roman Alferov , Andrey Kuznetsov , Ivan Oseledets

This work focuses on minimum-time low-thrust orbit transfers from a prescribed low Earth orbit to a specified low lunar orbit. The well-established indirect formulation of minimum-time orbit transfers is extended to a multibody dynamical…

Earth and Planetary Astrophysics · Physics 2024-06-04 Alessandro Beolchi , Mauro Pontani , Chiara Pozzi , Elena Fantino

Consider the spatial restricted three-body problem, as a model for the motion of a spacecraft relative to the Sun-Earth system. We focus on the dynamics near the equilibrium point $L_1$, located between the Sun and the Earth. We show that…

Dynamical Systems · Mathematics 2025-09-25 Amadeu Delshams , Marian Gidea , Pablo Roldan

Preliminary spacecraft trajectory optimization is a parameter dependent global search problem that aims to provide a set of solutions that are of high quality and diverse. In the case of numerical solution, it is dependent on the original…

Optimization and Control · Mathematics 2024-12-31 Ryne Beeson , Anjian Li , Amlan Sinha

This study investigates the effectiveness of Genetic Algorithms (GAs) in solving both linear and nonlinear systems of equations, comparing their performance to traditional methods such as Gaussian Elimination, Newton's Method, and…

Neural and Evolutionary Computing · Computer Science 2024-09-26 Samson Odan

A novel framework is proposed for quality of experience (QoE)-driven deployment and dynamic movement of multiple unmanned aerial vehicles (UAVs). The problem of joint non-convex three-dimensional (3D) deployment and dynamic movement of the…

Signal Processing · Electrical Eng. & Systems 2019-06-12 Xiao Liu , Yuanwei Liu , Yue Chen

Materials-by-design has been historically challenging due to complex process-microstructure-property relations. Conventional analytical or simulation-based approaches suffer from low accuracy or long computational time and poor…

Materials Science · Physics 2023-10-24 Xiao Shang , Zhiying Liu , Jiahui Zhang , Tianyi Lyu , Yu Zou

All-vs-all orbital evolutionary simulations for the low Earth orbit (LEO) simulate the long term evolution of the LEO environment. Although these simulations typically offer the highest fidelity, they are also highly computationally…

Earth and Planetary Astrophysics · Physics 2025-03-12 Enrico M. Zucchelli , Daniel Jang , Richard Linares

In this paper we present a fast method based on successive convexification for generating fuel-optimized spacecraft rendezvous trajectories in the presence of mixed-integer constraints. A recently developed paradigm of state-triggered…

Optimization and Control · Mathematics 2019-06-13 Danylo Malyuta , Taylor P. Reynolds , Michael Szmuk , Behcet Acikmese , Mehran Mesbahi

Generative Engine Optimization (GEO) is rapidly reshaping digital marketing paradigms in the era of Large Language Models (LLMs). However, current GEO strategies predominantly rely on Retrieval-Augmented Generation (RAG), which inherently…

Artificial Intelligence · Computer Science 2026-04-07 XinYu Zhao , ChengYou Li , XiangBao Meng , Kai Zhang , XiaoDong Liu

Astrometric discovery of sub-stellar mass companions orbiting stars is exceedingly hard due to the required sub-milliarcsecond precision, limiting the application of this technique to only a few instruments on a target-per-target basis as…

Earth and Planetary Astrophysics · Physics 2023-06-21 B. Holl , A. Sozzetti , J. Sahlmann , P. Giacobbe , D. Ségransan , N. Unger , J. B. Delisle , D. Barbato , M. G. Lattanzi , R. Morbidelli , D. Sosnowska

As the deployment of low carbon transportation technologies, specifically electric vehicles (EVs), is increasing, the concept of their eco-driving is gaining significant attention. Contrary to the eco-driving techniques used in conventional…

Systems and Control · Electrical Eng. & Systems 2021-01-01 Mukesh Gautam , Narayan Bhusal , Mohammed Benidris , Poria Fajri

A computational approach is developed for the design of continuous low thrust transfers in the planar circular restricted three-body problem. The transfer design method of invariant manifolds is extended with the addition of continuous low…

Optimization and Control · Mathematics 2015-10-12 Shankar Kulumani , Taeyoung Lee

This work presents the first application of the method of Genetic Algorithms (GAs) to data analysis for the Laser Interferometer Space Antenna (LISA). In the low frequency regime of the LISA band there are expected to be tens of thousands…

General Relativity and Quantum Cosmology · Physics 2014-11-17 Jeff Crowder , Neil J. Cornish , Lucas Reddinger

The protoplanetary discs of T Tauri and Herbig Ae/Be stars have been studied by using geometric disc models to fit their spectral energy distribution (SED). The simulations provide means to reproduce the signatures of different…

Astrophysics · Physics 2009-11-13 A. Hetem , J. Gregorio-Hetem