Results 81 to 90 of about 4,185,262 (226)

SpaceMed: Immersive interdisciplinary academic training for the future of human space exploration

open access: yes
Experimental Physiology, EarlyView.
Damian M. Bailey   +13 more
wiley   +1 more source

Green Innovation and Firm Efficiency: The Role of Institutional Quality in Italian High‐Tech Manufacturing Sectors

open access: yesBusiness Strategy and the Environment, Volume 35, Issue 6, Page 7867-7885, September 2026.
ABSTRACT The aim of this research is to verify whether institutional quality affects the relationship between green innovation and firm efficiency within the high‐tech manufacturing sectors. To estimate jointly the parameters of a stochastic frontier and the coefficients of a model explaining technical inefficiency, we employed the one‐step estimation ...
Mariarosaria Agostino   +2 more
wiley   +1 more source

Consensus SE(3)-Constrained Extended Kalman Filter for Close Proximity Orbital Relative Pose Estimation

open access: yesAerospace
In this paper, a recently proposed SE(3)-constrained extended Kalman filter (EKF) is extended to formulate a strategy for relative orbit estimation in a space-based sensor network. The resulting consensus SE(3)-constrained EKF utilizes space-based sensor
S. Mathavaraj, Eric A. Butcher
doaj   +1 more source

The Influence of J2 on Formation Flying of Micro-Satellites in Low Near Equatorial Orbits

open access: yesJournal of Advances in Information Technology, 2014
Taking into considerations the effect of the Earth’s oblateness parameters, particularly J2, the present work assess such influence on the formation flight of micro satellites in near equatorial low orbits. The modified Clohessy-Wiltshire equations
Harijono Djojodihardjo
doaj   +1 more source

A Review on Polymer Bonding Through Interdiffusion and Role of Deformation‐Acceleration

open access: yesMacromolecular Materials and Engineering, Volume 311, Issue 9, September 2026.
Polymer bonding is reframed through deformation‐induced bonding, an energy‐efficient route that joins polymer films without conventional heat‐intensive or adhesive‐based processing. By comparing established bonding methods with deformation‐induced bonding, this review highlights potential energy and cost savings while identifying opportunities across ...
Ajay Vallabh, John G. Tsavalas
wiley   +1 more source

Reduced attitude synchronization of rigid spacecraft with guaranteed performance

open access: yesFranklin Open
This paper addresses the problem of reduced attitude synchronization, specifically focusing on the coordination of pointing directions between two spacecraft modeled as rigid bodies.
Geethu I., Rakesh R. Warier
doaj   +1 more source

The Evolution of Autonomous Systems for Planetary Cave Exploration: A Review

open access: yesJournal of Field Robotics, Volume 43, Issue 6, Page 4094-4115, September 2026.
ABSTRACT The exploration of Subsurface Access Points (SAPs), such as lava tubes on the Moon and Mars, has gained significant interest due to their potential as stable environments shielded from surface radiation and temperature extremes. These sites are considered high‐value targets for detecting water and signs of ancient life, and assessing their ...
Sarah Swinton   +4 more
wiley   +1 more source

Low magnetic disturbance analysis and testing of a novel proof mass type for gravitational reference sensor system

open access: yesAdvances in Mechanical Engineering, 2019
The proof mass used for gravitational-wave or Earth-gravity-field detection is usually comprised of materials such as gold–platinum alloys, which have a high density and low magnetic susceptibility, in order to reduce the magnetic disturbance produced by
Zeyang Zhao, Zhaokui Wang, Yulin Zhang
doaj   +1 more source

Key Technical Fields and Future Outlooks of Space Manipulators: A Survey

open access: yesSmartBot, Volume 2, Issue 3, September 2026.
This paper systematically reviews the technological development of space manipulators, emphasizing the unique challenges posed by space environments. It examines four areas: structural design, modeling, planning, and control, while introducing typical ground test platforms.
Gang Chen   +12 more
wiley   +1 more source

Dynamics Modeling of Spacecraft Formation Flying and Evaluating the Models Accuracy under the Effects of Relative Distance, Eccentricity and Earth Gravitational Perturbation [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2012
Relative motion of satellites in a formation can be studied in several forms of dynamics models. In this paper, some of the most applicable models each implying particular assumptions, constraints and specifications are described in Cartesian and orbital
M. Navabi, M. Barati
doaj  

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