Results 91 to 100 of about 35,355 (308)

Scientometric Analysis of Published Scientific Productions in the Field of Satellite Constellations [PDF]

open access: yesفصلنامه علوم و فناوری فضایی
Satellite constellations consist of similar satellites distributed in a specific orbital pattern to accomplish a joint mission. They are commonly used for global telecommunications, positioning, and remote sensing missions.
Hossein Eftekhari   +3 more
doaj   +1 more source

Optical-SDMA for Broadband Aeronautical Communications"

open access: yes, 2003
Broadband communication for aircraft passengers is facing one of the most promising markets of near future. While currently systems introduced in L and Ku band are already limited in bandwidth considering service provisioning to several airline fleets ...
Giggenbach, Dirk   +3 more
core  

Optimal Configuration for Satellite PEPs using a Reliable Service on Top of a Routers-Assisted Approach [PDF]

open access: yes, 2009
Routers-assisted congestion control protocols, also known as Explicit Rate Notification (ERN) protocols, implement complex algorithms inside a router in order to provide both high link utilization and high fairness.
Dino Martin Lopez-Pacheco   +4 more
core   +1 more source

What drives animal responses to high severity fire? The role of functional traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux   +3 more
wiley   +1 more source

Strategic Innovation for Sustainability: A Conceptual Model Linking Digitalization, Social Dynamics, and Climate Change Mitigation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT This study addresses a significant research gap in the literature by systematically reviewing and synthesizing the interplay between social dynamics, environmental changes, and organizational innovation. Although prior research has explored these dimensions in isolation, the integrative framework remains lacking.
Gagan Deep Sharma   +4 more
wiley   +1 more source

for Land Mobile Satellite Communications

open access: yes, 2007
The performance of a mobile satellite communications link can be determined by the propagation path between a satellite and mobile users. Some of the most important factors are multipath propagation and vegetative shadowing.
Satellite Communications   +3 more
core  

Symbolic or Substantive Action: Intent, Effort, and Results

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Many firms have made ambitious climate pledges since the Paris Agreement of 2015. These pledges may be symbolic or substantive, but the literature is fragmented in defining these two terms. We propose a conceptual framework with three frames to delineate symbolic from substantive action: Intent—underlying motivations for engaging in climate ...
Vincent Xinyi Gu   +1 more
wiley   +1 more source

A Study on Fuel Estimation Algorithms for a Geostationary Communication & Broadcasting Satellite [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2000
It has been developed to calculate fuel budget for a geostationary communication and broadcasting satellite. It is quite essential that the pre-launch fuel budget estimation must account for the deterministic transfer and drift orbit maneuver ...
Jong Won Eun
doaj  

Circular Economy Pathways for Airport Climate Change Mitigation

open access: yesBusiness Strategy and the Environment, EarlyView.
ABSTRACT Airport operators face growing climate‐change pressures; the circular economy offers pathways to reduce impacts and recover resources. We examine how airport operators apply the circular economy in practice. We use an exploratory qualitative multicase design based on practitioner‐generated documents (e.g., press releases and sustainability ...
Michele Oppioli   +3 more
wiley   +1 more source

Orbit Determination Error Analysis for the KOMPSAT [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1998
Orbit error analysis was performed for the GPS navigation solutions and ground station tracking data of the KOMPSAT (Korea Multi-Purpose SATellite), which will be launched in 1999 for cartography of Korean peninsula as main mission. A least square method
Jeong-Sook Lee, Byoung-Sun Lee
doaj  

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