Results 101 to 110 of about 2,420,038 (307)

FSO Detection using differential signaling in outdoor correlated-channels condition [PDF]

, 2016
In this letter, we introduce a detection technique based on differential signaling scheme for outdoor free space optical communications. This method requires no channel state information (CSI) and does not suffer from the computational load compared with
Ghassemlooy, Zabih, Bhatnagar, Manav R., Zvanovec, Stanislav, Bhatnagar, Manav, Khalighi, Mohammad-Ali, Khalighi, Mohammad Ali, Mansour Abadi, Mojtaba   +6 more
core   +1 more source

Mapping the Innovation DNA of Agribusiness Firms: A Multi‐Method Analysis of Strategic Capabilities and Performance

Agribusiness, EarlyView.
ABSTRACT Innovation is essential for competitiveness in agribusiness facing dynamic environments. This study examines how market orientation, marketing, relational, and social capabilities influence innovation performance. Using data from 751 Spanish firms and a multi‐method approach that integrates Structural Equation Modeling (PLS‐SEM), Necessary ...
Beatriz Corchuelo Martínez‐Azúa, Alvaro Dias   +1 more
wiley   +1 more source

Statistics of surface gravity wave turbulence in the space and time domains [PDF]

, 2010
We present experimental results on simultaneous space–time measurements for the gravity wave turbulence in a large laboratory flume. We compare these results with predictions of the weak turbulence theory (WTT) based on random waves, as well as with ...
Nazarenko, Sergey, Denissenko, Petr, Lukaschuk, Sergei, McLelland, Stuart   +3 more
core   +1 more source

Benchmarking Data‐Driven Control of Octopus‐Inspired Soft Arms in Underwater Environment

Advanced Intelligent Systems, EarlyView.
Underwater soft robots present safe, compliant interaction, yet reproducible control remains scarce. This work presents an open benchmark for octopus‐inspired arms: a smooth, velocity‐diverse data‐collection scheme produces a compact dataset to train a vanilla policy.
Muhammad Sunny Nazeer, Yasmin Tauqeer Ansari, Emanuele Solfiti, Baljinder Singh Bal, Matteo Lo Preti, Barbara Mazzolai, Cecilia Laschi   +6 more
wiley   +1 more source

Shannon Entropy of Laguerre-Gaussian Correlated Schell-Model Beams in Underwater Turbulence

Photonics
This study examines the evolution of Shannon entropy, a key measure of uncertainty and disorder, in a Laguerre-Gaussian correlated Schell-model (LGcSM) beam under ocean turbulence.
Zhiyuan Hu, Ruilin Liu, Wenjie Yin, Jiayi Yu, Yangjian Cai, Rong Lin   +5 more
doaj   +1 more source

Characterization of optical fiber imaging bundles for swept-source optical coherence tomography [PDF]

, 2011
Fiber imaging bundles have been investigated for use in endoscopic optical coherence tomography (OCT) systems, to obviate the requirement for scanning components within the endoscope probe section.
Helen D. Ford, Ralph P. Tatam, Tatam, Ralph P., Ford, Helen D.   +3 more
core   +1 more source

Lost in aggregation? On the importance of local food price data for food poverty estimates

American Journal of Agricultural Economics, EarlyView.
Abstract This paper explores within‐country variations in food price dynamics and food poverty estimates by employing local market price data and national consumer price index (CPI) data. Our results show that national CPI data may be useful for approximating national trends but they fail to detect and identify spatial variations in local trends, which
Stephan Dietrich, Valerio Giuffrida, Bruno Martorano, Georg Schmerzeck, Marco Tiberti   +4 more
wiley   +1 more source

Design, Characterisation, and Demonstration of a Hot-Air-Based Optical Turbulence Generator [PDF]

, 2022
The performance of free-space optical communication links is impaired by atmospheric effects such as optical turbulence. Several techniques are being investigated for emulating the effects of turbulence in the laboratory.
Okonkwo, C.M., van Vliet, V., van den Hout, M., van den Hout, M.; id_orcid, van der Heide, S., Okonkwo, C.M.; id_orcid, van Vliet, V.; id_orcid   +6 more
core   +1 more source

Research on Heat Transfer Enhancement of Spiral Grooved Tube Heat Exchangers Based on CFD and Artificial Intelligence

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Driven by the energy crisis and carbon neutrality goals, high‐efficiency heat exchange equipment has become a core demand in the industrial sector. The spiral grooved double‐pipe heat exchanger exhibits significant heat transfer enhancement advantages, yet it requires balancing heat transfer efficiency and pressure loss.
Yueyun Yang, Wei Li, Xiuzhi Xi, Neng Gao
wiley   +1 more source

Frequency dissemination with free-space optical links [PDF]

, 2010
Optical clock technology is very certain to be integrated in the next high precision time standards. The demand for higher accuracy in time synchronization makes the use of free-space optical links necessary for frequency dissemination, especially if ...
Mata Calvo, Ramon, Giggenbach, Dirk, Moll, Florian   +2 more
core