Results 71 to 80 of about 5,543,577 (334)
Free-space optical delay line using space-time wave packets
Nature Communications, 2020 Delay lines are a critical part of future optical communications. Here, the authors create a delay line in free space by tuning the group velocities of multiple inline space-time wavepackets to introduce different delays.
Murat Yessenov +3 more
doaj +1 more source
Stretching factors, metrics and train tracks for free products
, 2015 In this paper we develop the metric theory for the outer space of a free product of groups. This generalizes the theory of the outer space of a free group, and includes its relative versions.
Francaviglia, Stefano, Martino, Armando
core +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
A survey of free space optical networks
Digital Communications and Networks, 2017 Free Space Optical (FSO) networks, also known as optical wireless networks, have emerged as viable candidates for broadband wireless communications in the near future.
In Keun Son, Shiwen Mao
doaj +1 more source
Public space and free action: Foucault vs. Lefebvre [PDF]
Sociologija, 2012 In this paper we will try to offer a systematic insight into the relation of everyday practices and public space. By examining the work of two of the most influential authors in this field, Foucault and Lefebvre, we will try to provide a theoretical ...
Prodanović Srđan, Krstić Predrag
doaj +1 more source
Lipschitz-free spaces over compact subsets of superreflexive spaces are weakly sequentially complete
, 2017 Let $M$ be a compact subset of a superreflexive Banach space. We prove that the Lipschitz-free space $\mathcal{F}(M)$, the predual of the Banach space of Lipschitz functions on $M$, has the Pe{\l}czy\'nski's property ($V^\ast$).
Aharoni +42 more
core +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Comparative Analysis of Free Space Optics and Single Mode Fiber [PDF]
, 2016 In this paper we have done comparative analysis of free space optics and single mode fibre optical channels system. Performance study is done for variable ranges 1km, 50km and 100km for the FSO and SMF channels.
Vijay, J. (Jayprakash) +1 more
core
Approximation properties and Schauder decompositions in Lipschitz-free spaces
, 2012 We prove that the Lipschitz-free space over a doubling metric space has the bounded approximation property. We also show that the Lipschitz-free spaces over $\ell_1^N$ or $\ell_1$ have monotone finite-dimensional Schauder ...
Lancien, Gilles, Pernecka, Eva
core +3 more sources
In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS
FEBS Letters, EarlyView.We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka +11 more
wiley +1 more source