Results 31 to 40 of about 12,220 (308)

Scheduling an Agile Earth Observation Satellite with a Defined Mission Using Discrete Event Supervisory Control [PDF]

open access: yesعلوم، فناوری و کاربردهای فضایی, 2023
Finding the best possible scheduling to maximize observations and transfer them to the ground station as a function of satellite characteristics, orbital mechanics, attitude control system, field of view and observational objectives, is very important ...
Arda Afzali, Bahman Ghorbani Vaghei
doaj   +1 more source

A Study on Orbital Mechanics [PDF]

open access: yesInternational Journal of Trend in Scientific Research and Development, 2018
Space craft to solar system bodies must deal with multiple deviations under the in uence of gravity. The motion of satellite in one of the types of conic section strongly depends upon escape velocity. The goal of this paper is to nd the trajectory of satellite by analysing orbits eccentricity and or bital parameters.
N. Gayathri, S. Mahalakshmi
openaire   +2 more sources

Manifold dynamics in the restricted three body problem and applications to orbital mechanics [PDF]

open access: yes, 2022
openDynamics of the restricted three body problem and numerical methods useful to calculate the tube manifolds of periodic orbits around the collinear Lagrange points and the heteroclinic transfers between such ...
GOMIERO, GUGLIELMO
core  

Developing a New Explicit Guidance Method for the Trajectory Correction of Sub-Orbital Modules [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2013
This paper presents an explicit guidance method which could be used in the problems of orbit correction for sub-orbital modules. This method is based on solving the Lambert problem.
A. R. Alemi Naeeni, J. Roshanian
doaj  

State-Dependent Molecular Dynamics

open access: yesMolecules, 2014
This paper proposes a new mixed quantum mechanics (QM)—molecular mechanics (MM) approach, where MM is replaced by quantum Hamilton mechanics (QHM), which inherits the modeling capability of MM, while preserving the state-dependent nature of QM.
Ciann-Dong Yang, Hung-Jen Weng
doaj   +1 more source

Ring Vibrations to Sense Anionic Ibuprofen in Aqueous Solution as Revealed by Resonance Raman

open access: yesMolecules, 2022
We unravel the potentialities of resonance Raman spectroscopy to detect ibuprofen in diluted aqueous solutions. In particular, we exploit a fully polarizable quantum mechanics/molecular mechanics (QM/MM) methodology based on fluctuating charges coupled ...
Sara Gómez   +4 more
doaj   +1 more source

Bound State Solution of Dirac Equation for Generalized Pöschl-Teller plus Trigomometric Pöschl-Teller Non- Central Potential Using SUSY Quantum Mechanics

open access: yesJournal of Mathematical and Fundamental Sciences, 2014
The bound state solution of the Dirac equation for generalized PöschlTeller and trigonometric Pöschl-Teller non-central potentials was obtained using SUSY quantum mechanics and the idea of shape invariance potential.
Suparmi, Cari
doaj   +1 more source

Dental microwear reveals mammal-like chewing in the neoceratopsian dinosaur Leptoceratops gracilis [PDF]

open access: yesPeerJ, 2016
Extensive oral processing of food through dental occlusion and orbital mandibular movement is often cited as a uniquely mammalian trait that contributed to their evolutionary success.
Frank J. Varriale
doaj   +2 more sources

The Prediction of Thermo Physical, Vibrational Spectroscopy, Chemical Reactivity, Biological Properties of Morpholinium Borate, Phosphate, Chloride and Bromide Ionic Liquid: A DFT Study [PDF]

open access: yesInternational Journal of New Chemistry, 2019
In the light of computational chemistry, based on morpholinium cation-based Ionic Liquid, their different types of physical, chemical, and biological properties is highlighted.
Ajoy Kumer   +3 more
doaj   +1 more source

Semi-analytical solution for the optimal low-thrust deflection of near-Earth objects

open access: yes, 2009
This paper presents a semi-analytical solution of the asteroid deviation problem when a low-thrust action, inversely proportional to the square of the distance from the sun, is applied to the asteroid.
Vasile, M.   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy