Results 111 to 120 of about 17,683 (311)

Laser guide stars and turbulence profiling for extremely large telescopes [PDF]

, 2006
The next generation of ground based telescopes, the so-called extremely large telescopes, will offer a significant leap in sensitivity and resolution compared to current telescopes. They also present a range of technical challenges.
Butterley, Timothy
core  

A bound state attractor in optical turbulence

Physica D: Nonlinear Phenomena
We study numerically the nonintegrable dynamics of coherent, solitonic, nonlinear waves, in a spatially nonlocal nonlinear Schrodinger equation relevant to realistic modelling of optical systems: the Schrodinger-Helmholtz equation. We observe a single oscillating, coherent solitary wave emerging from a variety of initial conditions.
Clément Colléaux, Jonathan Skipp, Sergey Nazarenko, Jason Laurie   +3 more
openaire   +3 more sources

Dynamic Spillovers Between FinTech, Blockchain, and Green Finance: A Quantile Connectedness Approach

Business Strategy and the Environment, EarlyView.
ABSTRACT This paper explores how financial innovation and environmental sustainability intersect by analyzing spillovers between FinTech, blockchain energy use, and green finance. Using a Quantile Vector Autoregression (QVAR) framework, we examine weekly data from 2018 to 2024 across 11 digital, environmental, and macro‐financial indices.
Mehmet Sahiner, Sisi Sung, James Devlin
wiley   +1 more source

Conception and development of an adaptive optics testbed for free-space optical communication

, 2009
Optical free space communications are an efficient approach to transmit high data-rates with small antennas and low power consumption over large distances. Possible scenarios are links between satellites, up- and down-links from and to ground stations as
Moll, Florian
core  

Effective Benchmarks for Optical Turbulence Modeling

Artificial Intelligence for the Earth Systems
Abstract Optical turbulence poses a significant challenge for communication, directed energy, and imaging systems, particularly in the atmospheric boundary layer. Effective modeling of optical turbulence is crucial for the development and deployment of these systems, yet the lack of standardized evaluation tools and benchmark datasets
Christopher Jellen, Charles Nelson, Cody Brownell, John Burkhardt   +3 more
openaire   +2 more sources

Fueling Tomorrow: Scenario Planning for the Future of Gas Stations

Business Strategy and the Environment, EarlyView.
ABSTRACT Transport electrification is reshaping the service infrastructures that mediate everyday mobility, yet most electrification scenario studies remain macrolevel and offer limited insight into how incumbent forecourt (gas‐station) networks can adapt under deep uncertainty.
Joao Gabriel Rosa, Fabiano Armellini, Jean‐Marc Robert   +2 more
wiley   +1 more source

Multiple Wavelength Free-Space Laser Communications

, 2003
Free-space optical communications systems in the atmosphere, based on intensity modulation and direct detection, are heavily affected by fading caused by turbulence cells of varying scale and motion.
Perlot, Nicolas, Hennes Henniger, Giggenbach, Dirk, Nicolas Perlot, Henniger, Hennes, Florian David, Robert Purvinskis, David, Florian, Dirk Giggenbach, Purvinskis, Robert   +9 more
core   +1 more source

Too Complex to Control? How Firms Navigate Scope 3 Governance Under Institutional Uncertainty

Business Strategy and the Environment, EarlyView.
ABSTRACT As Scope 3 emissions make up the largest share of many firms' carbon footprints, firms face growing pressure to manage emissions beyond their direct control. Ongoing revisions of the CSRD, the GHG Protocol, and the SBTi Net‐Zero Standard further increase regulatory and methodological uncertainty.
Victoria Fohrer, Alexander Stierstorfer, Florian Gilljam   +2 more
wiley   +1 more source

Current optical technologies for wireless access

, 2009
The objective of this paper is to describe recent activities and investigations on free-space optics (FSO) or optical wireless and the excellent results achieved within SatNEx an EU-framework 6th programme and IC 0802 a COST action.
Sheikh Muhammed, S., Ghassemlooy, Zabih, Javornik, Tomaz, Kandus, Gorazd, Awan, Muhammad, Brandl, P., Capsoni, Carlo, Leitgeb, Erich, Nebuloni, R.   +8 more
core  

The Moral Manager in the Market: How CFOs' Ethical Intelligence Drives ESG Investment in Emerging Economies' Dual Markets

Business Strategy and the Environment, EarlyView.
ABSTRACT What propels a CFO in an emerging economy to champion ESG investments when formal regulations are weak? Moving beyond structural explanations, we provide a behavioural account arguing that a manager's internal ethical compass—moral intelligence (MI)—is a key driver.
AmirHossein ArminKia, Davood Askarany, Seyed Hamed Fahimifard, Seyedeh Kimia Shafahi Moghadam, Seyed Shayan Alavi   +4 more
wiley   +1 more source