Results 71 to 80 of about 10,661 (216)

Effect of Pointing Errors on the Performance of Hybrid FSO/RF Networks

IEEE Access, 2019
The performance of a free space optics (FSO) transmission suffers from the atmospheric turbulence and the attenuation in foggy environment. By employing relay nodes, the error rate and the coverage area of the FSO communication system can be ...
Shubha Sharma, A. S. Madhukumar, R. Swaminathan   +2 more
doaj   +1 more source

Long‐Term Metabolic Outcomes Following Bariatric Surgery: A Systematic Review, Meta‐Analysis, and Meta‐Regression

Obesity Reviews, EarlyView.
ABSTRACT Bariatric surgery (BS) has short‐ and medium‐term benefits in improving metabolic syndrome (MetS) components, but its long‐term impact remains incompletely characterized. This systematic review and meta‐analysis aimed to quantify the long‐term effects of BS (≥ 5 years) on fasting blood glucose (FBG), HDL cholesterol, triglycerides (TG), waist ...
Bernardo Paz Barboza, Pietro Ferrara, Lisa Ye, Lorenzo Losa, Gianluca Perseghin, Giovanni Cesana, Paolo Berta, Lorenzo Giovanni Mantovani   +7 more
wiley   +1 more source

Coherent optical binary polarisation shift keying heterodyne system in the free-space optical turbulence channel [PDF]

, 2011
In this paper, analytical and simulation results for the bit error rate (BER) performance and fading penalty of a coherent optical binary polarization shift keying (2PolSK) heterodyne system adopted for a free space optical (FSO) communication link ...
Z. Ghassemlooy, Tang, Xuan, S. Rajbhandari, Lee , Chung Ghiu, Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, W.O. Popoola, C.G. Lee, Popoola, Wasiu O., Rajbhandari, Sujan, Lee, Chung Ghiu, X. Tang, Ghassemlooy , Zabih   +12 more
core   +1 more source

Machine Learning Techniques In Wdm-Fso Systems: Comparative Study

Syrian Journal for Science and Innovation
Free space optical (FSO) communication has recently received much attention from researchers due to its great advantages. FSO offers large bandwidth, ease of installation and deployment, security compared to other wireless communications, and FSO systems
Ranim Younes, Mohammad Nassr
doaj   +1 more source

There Is Always a Bigger Fish. Determinants of Power Perceptions in Swiss Biodiversity Policy

Policy Studies Journal, EarlyView.
ABSTRACT The Advocacy Coalition Framework (ACF) views power as crucial in policy processes, but the nature of coalition power, its determinants, and how to empirically measure it remain understudied. In this article, we use a mixed method approach and social network analysis to explore power relationships in the biodiversity policy subsystem in ...
Alix d'Agostino, Jascha Egli, Daniel Kübler   +2 more
wiley   +1 more source

Bureaucratic Politics and Aid Allocation: Evidence From the US Agency for International Development

Regulation &Governance, EarlyView.
ABSTRACT We examine the impact of bureaucratic politics within the US Agency for International Development on the allocation of its development assistance. Existing studies of aid allocation have focused on donor interests, recipient needs, and recipient merit without accounting for the bureaucratic decision‐making process that helps determine these ...
Gus Greenstein, Mirko Heinzel
wiley   +1 more source

Bootstrapped low complex iterative LDPC decoding algorithms for free-space optical communication links

EURASIP Journal on Wireless Communications and Networking, 2023
In recent years, much research has been devoted to free-space optical communication (FSO). The unregulated spectrum, low implementation costs, and robust security of FSO systems all are of great importance which lead to a wide range of applications for ...
Albashir A. Youssef
doaj   +1 more source

Do Family Changes Constitute a Comprehensive Demographic Shift? A Comparison of the Spatial Dynamics of Five Family Changes in Switzerland (1969–2023)

Tijdschrift voor Economische en Sociale Geografie, EarlyView.
Abstract Several theories have been proposed to explain the family changes that have occurred in Europe since the mid‐1960s. It is often assumed that as these changes occurred simultaneously; they have a common origin and represent the same demographic shift.
Adrita Banerjee, Yoann Doignon, Oumar Mbath, Amira Hamieh, Philippe Wanner   +4 more
wiley   +1 more source

Istical Characterization of Aerosols' Liquid Water Content and Visibility for Terrestrial FSO Links

, 2012
Liquid water content (LWC) is a microphysical parameter which is used to characterize fog/cloud and other particulates. In the absence of precipitation higher amount of LWC depicts dense fog, significantly reducing visibility and causing performance ...
Muhammad Saeed Khan, Erich Leitgeb, Martin Grabner, Carlo Capsoni, Vaclav Kvicera, Roberto Nebuloni   +5 more
core   +1 more source

The cranial, mandibular, and hyoid anatomy of softshell turtles (Trionychidae): A revised character list for phylogenetic analysis

The Anatomical Record, Volume 309, Issue 10, Page 2790-2837, October 2026.
Abstract Softshell turtles (Pan‐Trionychidae) are an early branching clade of hidden‐necked turtles (Cryptodira) with a rich fossil record extending back to the Early Cretaceous. The evolutionary history of softshell turtles is still unresolved because of their conservative morphology combined with high levels of polymorphism related to morphological ...
Léa C. Girard, Walter G. Joyce
wiley   +1 more source