Results 41 to 50 of about 503,018 (197)
Wide-Angle, Multiplexed Backscatter Communications Using a Dynamic Metasurface-Backed Luneburg Lens
IEEE AccessBackscatter communications is attractive for its low power requirements due to the lack of actively radiating components; however, commonly used devices are typically limited in range and functionality.
Samuel Kim +4 more
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A solution to the complement of the generalized Luneburg lens problem
Communications Physics, 2021 Spherically-symmetric lenses can create sharp virtual images, but a general expression for their refractive index profiles had not yet been developed.
Nelson J. G. Fonseca +2 more
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Luneburg Lens and Wave Theory [PDF]
The Journal of the Acoustical Society of America, 1967 The wave theory for an underwater Luneburg lens is discussed in terms of a generalized wave equation, which differs from the ordinary wave equation in that it contains a term involving the gradient of the material density of the lens. We then consider the special case where, to a first approximation, the density of the lens has a constant value equal ...
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Stock Market Reactions to Climate Risk Events: A Systematic Literature Review and Research Agenda
Business Strategy and the Environment, EarlyView.ABSTRACT As global warming intensifies, climate risks' impact on firm value has become a critical concern for academia and investors. This systematic literature review analyzes 50 event studies in this research field, classifying them by climate risk type.
Mario Schuster, Rainer Lueg
wiley +1 more source
Business Strategy and the Environment, EarlyView.ABSTRACT This study investigates the bi‐directional relationship between corporate sustainability and environmental uncertainty, focusing on key moderators that shape firms' strategic responses. Using fixed‐effects regressions with S&P 500 data (LSEG Refinitiv Workspace, 2005–2022), we present two key findings.
Felix Peter Thiesen, Rainer Lueg
wiley +1 more source
Plasmonic metasurface Luneburg lens
Photonics Research, 2019 We present a new design of a plasmonic Luneburg lens made from a gradient-index metasurface that was constructed with an array of nanometer-sized holes in a dielectric thin film. The fabricated structure consists of a planar lens with a diameter of 8.7 μm composed of a rectangular array of holes with a periodicity of 300 nm.
C. E. Garcia-Ortiz +8 more
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Business Strategy and the Environment, EarlyView.ABSTRACT Firms increasingly disclose environmental product information. Yet little is known about how the format of such information shapes consumer responses. This research examines how the degree of numerical precision in environmental product information influences consumers' responses, particularly their purchase intentions and willingness to pay ...
Jacob Hörisch, Tim Schroll
wiley +1 more source
Prospects for poor-man’s cloaking with low-contrast all-dielectric optical elements [PDF]
Journal of the European Optical Society-Rapid Publications, 2009 We discuss the prospects for low-contrast all-dielectric cloaking and offer a simple picture illustrating the basic obstacle for perfect cloaking without materials with an effective double-negative response.
Mortensen Niels Asger +2 more
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IEEE Photonics Journal, 2022 In this paper, a novel dielectric metasurface-inspired multi-beam directional Luneburg lens is proposed as a wireless power transfer medium at 5G mm-wave band.
Basudev Majumder +3 more
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Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT This study examines the relationship between board independence and corporate social responsibility (CSR) outcomes. Based on legitimacy theory, we conducted a structured literature review of 167 archival studies to analyze the influence of board independence on CSR performance and reporting.
Patrick Velte
wiley +1 more source