Results 1 to 10 of about 551,491 (329)

Computation of Zagreb and atom-bond connectivity indices of certain families of dendrimers by using automorphism group action [PDF]

Journal of the Serbian Chemical Society, 2017
In QSAR/QSPR studies, topological indices are utilized to predict the bioactivity of chemical compounds. In this paper, the closed forms of different Zagreb indices and atom–bond connectivity indices of regular dendrimers G[n] and H[n] in terms of a ...
Ahmad Uzma, Ahmad Sarfraz, Yousaf Rabia
doaj   +1 more source

Use of Sentinel-1 Multi-Configuration and Multi-Temporal Series for Monitoring Parameters of Winter Wheat

Remote Sensing, 2021
The present study aims to investigate the potential of multi-configuration Sentinel-1 (S-1) synthetic aperture radar (SAR) images for characterizing four wheat parameters: total fresh mass (TFM), total dry mass (TDM), plant heights (He), and water ...
Azza Gorrab, Maël Ameline, Clément Albergel, Frédéric Baup   +3 more
doaj   +1 more source

Observational data and orbits of the comets discovered at the Vilnius Observatory in 1980–2006 and the case of the comet 322P

Open Astronomy, 2022
This article is devoted to the discovery of comets at the Vilnius Observatory together with the orbital analysis of dynamically interesting comets, namely 322P. We studied the orbital evolution of comet 322P with and without non-gravitational effects. It
Włodarczyk Ireneusz, Černis Kazimieras
doaj   +1 more source

Analysis of Scattering Angle Sampling by Multi-Angle Imaging Polarimeters for Different Orbit Geometries

Frontiers in Remote Sensing, 2022
Per the 2017–2027 Decadal Survey for Earth Science and Applications from Space, many resources are being dedicated to identifying the most cost-effective and appropriate space-based approaches to aid in answering important questions related to the roles ...
Sabrina N. Thompson, Bastiaan van Diedenhoven, Peter R. Colarco, Patricia Castellanos, Eric Lian, J. Vanderlei Martins   +5 more
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Izviđanje satelitskih komunikacija u funkciji savremenih operacija / Reconnaissance of satellite communications in contemporary operations [PDF]

Vojnotehnički Glasnik, 2004
Raspoloživi vojni resursi u bilo kojoj kategoriji nisu kritični u mirnodopskom periodu, jer se dimenzionišu za ratno naprezanje određenog nivoa. Međutim, u uslovima izvođenja borbenih dejstava postoje ekstremi u zahtevima za angažovanjem, koje sistemi ne
Slaviša Đukanović
doaj   +1 more source

SQUARE2: Spacecraft in QUAdrature for Solar Exploration—A Mission Concept for Synergetic Observations of the Sun and Heliosphere

Frontiers in Astronomy and Space Sciences, 2022
SQUARE2 is the acronym for Spacecraft in QUAdrature for solaR Exploration, and is a mission concept for multi-instrumental two-point observations of the Sun and its environment. It stems from the need to have two probes that are systematically in orbital
D. Telloni
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On the Dynamic Geometry of Kasner Quadrilaterals with Complex Parameter

Mathematics, 2022
We explore the dynamics of the sequence of Kasner quadrilaterals (AnBnCnDn)n≥0 defined via a complex parameter α. We extend the results concerning Kasner triangles with a fixed complex parameter obtained in earlier works and determine the values of α for
Dorin Andrica, Ovidiu Bagdasar
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Evolution of ambiguous numbers under the actions of a Bianchi group

Journal of Taibah University for Science, 2020
In this paper we study some combinatorial properties of biquadratic irrational number field ${\mathbb{Q}}( {i,\sqrt{3} } ) $, under the action of a Bianchi group ${\Gamma _3} = PSL({2,{O_3}} ) $.
Awais Yousaf, Hanan Alolaiyan, Abdul Razaq, Muhammad Younis   +3 more
doaj   +1 more source

A unified framework for the orbital structure of bars and triaxial ellipsoids [PDF]

, 2015
We examine a large random sample of orbits in two self-consistent simulations of N-body bars. Orbits in these bars are classified both visually and with a new automated orbit classification method based on frequency analysis.
Adams F. C., Binney J., Brown J. S., Caleb Abbott, Combes F., Contopoulos G., Corsini E. M., Debattista V. P., Debattista V. P., Deibel A. T., Hemsendorf M., Juntai Shen, Lauer T. R., Li B., Martinet L., Meidt S. E., Merritt D., Merritt D., Monica Valluri, Onken C. A., Papaphilippou Y., Papaphilippou Y., Patsis P. A., Pfenniger D., Pfenniger D., Poon M. Y., Sellwood J. A., Sellwood J. A., Shen J., Toomre A., Valluri M., Valluri M., Valluri M., Victor P. Debattista   +33 more
core   +2 more sources

A Note on Graphs with Prescribed Orbit Structure

Entropy, 2019
This paper presents a proof of the existence of connected, undirected graphs with prescribed orbit structure, giving an explicit construction procedure for these graphs. Trees with prescribed orbit structure are also investigated.
Abbe Mowshowitz, Matthias Dehmer, Frank Emmert-Streib   +2 more
doaj   +1 more source