Results 71 to 80 of about 8,972 (224)

ROLE OF SOIL AND CLIMATE CHARACTERISTICS IN THE FORMATION OF RADIOACTIVE CONTAMINATION OF MUSHROOMS

Радиационная гигиена, 2017
The present work is devoted to an analysis of the regularities of 137Cs accumulation by forest mushrooms after the Chernobyl accident and the role of physical-chemical soil characteristics and climate characteristics in the formation of radioactive ...
M. Kaduka, V. Shutov, G. Bruk, M. Balonov   +3 more
doaj  

Axicons in FSO Systems

, 2010
This paper studies the possibility of using axicons in Free Space Optics (FSO) systems. The behavior of the pseudo- Bessel beams generated by "logarithmic" and "linear" axicons, with or without stops, was analyzed through the Huygens-Fresnel integral of diffraction in cylindrical coordinates.
Ambrosio, Leonardo A., Zamboni-Rached, Michel, Hernández-Figueroa, Hugo E.   +2 more
openaire   +2 more sources

The Limits of Regulatory Capture: Explaining the UK Payment Protection Insurance Mis‐Selling Scandal

Public Administration, EarlyView.
ABSTRACT To what extent does regulatory agencies' failure to protect the public from harm result from undue industry influence? We argue that “regulatory capture” is invoked too easily to explain regulatory failure. To re‐examine the relationship between regulatory capture and regulatory failure, we use process‐tracing to study UK regulatory decision ...
Eva Heims
wiley   +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

Non-orthogonal multiple access for FSO backhauling [PDF]

2018 IEEE Wireless Communications and Networking Conference (WCNC), 2018
This paper has been submitted to IEEE WCNC ...
Marzieh Najafi, Vahid Jamali, Panagiotis D. Diamantoulakis, George K. Karagiannidis, Robert Schober   +4 more
openaire   +2 more sources

Experimental study of bit error rate of free space optics communications in laboratory controlled turbulence

, 2010
This paper reports experimental results for the performance of an free space optical (FSO) communication link employing different modulation schemes under the influence of the atmospheric scintillation.
Z. Ghassemlooy, E. Leitgeb, Adebanjo, Olusegun, O. Adebanjo, S. Ansari, S. Rajbhandari, Ghassemlooy, Zabih, Ansari, S., Leitgeb, Erich, Rajbhandari, Sujan, H. Le-Minh, Ijaz, Muhammad, M. Ijaz, Le Minh, Hoa   +13 more
core   +1 more source

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

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

PDF Comparison based on Various FSO Channel Models under Different Atmospheric Turbulence

Al-Khawarizmi Engineering Journal, 2023
Recently, wireless communication environments with high speeds and low complexity have become increasingly essential. Free-space optics (FSO) has emerged as a promising solution for providing direct connections between devices in such high-spectrum ...
Mahdi A. Atiyah, Lwaa Faisal Abdulameer, Gaurav Narkhedel   +2 more
doaj   +1 more source