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Weak and exact domination in distributed systems

Larbi Afifi, El Magri, Abdelhaq Jai
2010 International Journal of Applied Mathematics and Computer Science  
Weak and exact domination in distributed systems In this work, we introduce and examine the notion of domination for a class of linear distributed systems.  ...  We give the main algebraic properties of such relations, as well as characterizations of exact and weak domination. We also study the case of actuators, and various situations are examined.  ...  Acknowledgment The authors wish to thank the Academy Hassan II of Sciences and Technics for its support to the Systems Theory Network.  ... 
doi:10.2478/v10006-010-0031-5 fatcat:qtp5vuixkrbnhppbampxlskjly

Domination in Controlled and Observed Distributed Parameter Systems

L. Afifi, M. Joundi, E. M. Magri, A. El Jai
2013 Intelligent Control and Automation  
Finally, we study the relationship between the notion of domination and the compensation one, in the exact and weak cases.  ...  We consider and we study a general concept of domination for controlled and observed distributed systems.  ...  number of sensors, the exact and weak domination are equivalent.  ... 
doi:10.4236/ica.2013.42026 fatcat:kmk4fc2rg5em7oapv2po5gormu

An extended regional classification of distributed systems

Larbi Afifi, Meriem Joundi, El Mostafa Magri, Abdelhaq El Jai
2013 International Journal of Mathematical Analysis  
Finally, we study the relationship between the notion of regional domination and the regional compensation one, in the exact and weak cases.  ...  We consider and we study a general concept of regional domination for controlled and observed distributed systems.  ...  The following result deriving from proposition 2, gives characterizations of exact and weak domination in the case of actuators.  ... 
doi:10.12988/ijma.2013.13134 fatcat:qgswxfyo4naqfpkdnsxay5ukme

Domination in hyperbolic distributed systems

Larbi Afifi, Meriem Joundi, El Mostafa Magri, Abdelhaq El Jai
2013 International Journal of Mathematical Analysis  
We define the weak and exact regional domination for input operators in the case a of class of controlled systems. We give characterization results and the main properties of such relations.  ...  This work concerns the regional analysis of linear distributed systems. It is an extension of the notion of domination to the regional case.  ...  The notion of domination has been introduced firstly in [2] for lymped (finite dimension) systems. Concerning distributed systems, the notions of weak and exact domination are introduced in [3] .  ... 
doi:10.12988/ijma.2013.38208 fatcat:oqligekewvg6rbremobauus2vy

Subject Index

2006 Journal of Discrete Algorithms  
time isotonic and unimodal regression in the L 1 and L ∞ norms, 676 Multi-tasking systems On Multi-threaded Metrical Task Systems, 401 Multicut in trees Exact algorithms and applications for Tree-like  ...  dominating set Distributed algorithms for weighted problems in sparse graphs, 588 Minimum-weight independent set Distributed algorithms for weighted problems in sparse graphs, 588 Monotonic Linear  ... 
doi:10.1016/s1570-8667(06)00094-3 fatcat:e5in7ez4svbdlcjyzzev4xkzhm

An exact expression for symbol-error rate of multipulse PPM technique in free-space optics with gamma-gamma channels

Ahmed E. Morra, Haitham S. Khallaf, Hossam M. H. Shalaby, Zen Kawasaki
2013 Proceedings of the 2013 18th European Conference on Network and Optical Communications & 2013 8th Conference on Optical Cabling and Infrastructure (NOC-OC&I)  
In this paper, we derive both exact and approximate expressions for the average symbol-error rate (SER) of free-space optics systems adopting multipulse PPM (MPPM) technique in gamma-gamma channels.  ...  Our expressions are then verified by getting the same results using lognormal and exponential channel expressions where lognormal and exponential distributions are valid only for weak and strong turbulence  ...  The authors would like to thank Egyptian Ministry of Higher Education (MoHE) and Egypt-Japan University of Science and Technology (E-JUST) for their support.  ... 
doi:10.1109/noc-oci.2013.6582873 fatcat:w4dpppdq5nc35i6cre6eupcgou

Dynamics and decoherence of two cold bosons in a one-dimensional harmonic trap

Tomasz Sowiński, Mirosław Brewczyk, Mariusz Gajda, Kazimierz Rzążewski
2010 Physical Review A. Atomic, Molecular, and Optical Physics  
We show that if initially the center of mass and relative degrees of freedom are entangled then the Gross-Pitaevskii equation fails to reproduce the exact dynamics and entanglement is produced dynamically  ...  Making use of the exact solution of the eigenvalue problem of a particle in the delta-like potential we study time evolution of initially separable state of two particles.  ...  in time and compared to exact solutions.  ... 
doi:10.1103/physreva.82.053631 fatcat:wqdnlr6nczbrtph4ca2meeyjz4

Page 1322 of The Journal of Chemical Physics Vol. 30, Issue 5 [page]

1959 The Journal of Chemical Physics  
The Problem of Weak and Strong Links in Degradation R. K. ParuriaA AND V. S.  ...  Exact expressions are also derived for the higher moments of distribution.  ... 

Domination of Discrete Distributed Systems

L. Afifi, M. Joundi, K. Lasri, E.M. Magri, Samira El Yacoubi, Larbi Afifi, El Hassan Zerrik, Abdessamad Tridane
2015 ESAIM Proceedings and Surveys  
The domination is an original way for systems classification, based on input and output operators. In this paper, we consider first a class of controlled discrete distributed parameter systems (DPS).  ...  We give various characterizations and the main properties in the general case, and then by means of the choice of actuators and sensors.  ...  case, the exact and the weak dominations are equivalent.  ... 
doi:10.1051/proc/201549001 fatcat:pigthpbgtnat7h65fw6ha4f3ry

2kF-Friedel to4kF-Wigner oscillations in one-dimensional Fermi gases under confinement

Gao Xianlong
2012 Physical Review A. Atomic, Molecular, and Optical Physics  
The results are compared against the exact analytical and the exact diagonalization method.  ...  For both unpolarized and polarized systems, a threshold of the short-range interaction strength can be found where Nf-peak Wigner oscillations of a 4k_F wave vector appear in the density profile (N_f is  ...  It is a pleasure to thank Giovanni Vignale, Marco Polini, Shu Chen, and Wei Li for several useful discussions.  ... 
doi:10.1103/physreva.86.023616 fatcat:7x4y4fy5qrbbfccngaudov7ray

Performance Analysis of Both Shot- and Thermal-Noise Limited MultiPulse PPM Receivers in Gamma–Gamma Atmospheric Channels

Ahmed E. Morra, Haitham S. Khallaf, Hossam M. H. Shalaby, Zen Kawasaki
2013 Journal of Lightwave Technology  
The atmospheric turbulence is modeled by a gamma-gamma distribution, which is suitable for both weak and strong turbulence.  ...  For the shotnoise limited system, both exact and approximate expressions of the average symbol-error rate (SER) of the system are obtained.  ...  The atmospheric turbulence is modeled by a gamma-gamma distribution, which is suitable for both weak and strong turbulence.  ... 
doi:10.1109/jlt.2013.2278692 fatcat:faexxyk5ufaozgaxkqmgvlo4sa

A Literature Survey on Performance of Free Space Optical Communication Links under Strong Turbulence

M. Shunmuga Lakshmi
2012 IOSR Journal of Electronics and Communication Engineering  
This literature survey deals with the BER performance and turbulence effects on FSO links in the existing method.  ...  In the existing method, many ideas have been proposed to analyze the performance of FSO links. To mitigate the effect of turbulence, error control codes and spatial diversity are used.  ...  In this case, fluctuations in the intensity dominates and greatly affect system performance. If the normalized receiver aperture diameter is large, then the phase noise will be dominated.  ... 
doi:10.9790/2834-0350509 fatcat:wehe4k56dzfxdlboq5qa535rqi

Kohn–Sham approach to quantum electrodynamical density-functional theory: Exact time-dependent effective potentials in real space

Johannes Flick, Michael Ruggenthaler, Heiko Appel, Angel Rubio
2015 Proceedings of the National Academy of Sciences of the United States of America  
In this work, we numerically construct the exact electron-photon Kohn-Sham potentials for a prototype system which consists of a trapped electron coupled to a quantized electromagnetic mode in an optical  ...  We observe peak and step structures in the effective potentials, which can be attributed solely to the quantum nature of light, i.e., they are real-space signatures of the photons.  ...  After t = 2 ps, the beyond-dipole correction becomes the dominant part in v Mxc ðrtÞ and we find a dominating peak in the 2D surface plot.  ... 
doi:10.1073/pnas.1518224112 pmid:26627715 pmcid:PMC4687533 fatcat:i6jgrhfgvzhh3dpamyai53jec4

Unified performance analysis of mixed line of sight RF-FSO fixed gain dual-hop transmission systems

Emna Zedini, Imran Shafique Ansari, Mohamed-Slim Alouini
2015 2015 IEEE Wireless Communications and Networking Conference (WCNC)  
In particular, we derive new unified closed-form expressions for the cumulative distribution function, the probability density function, the moment generation function, and the moments of the end-toend  ...  Based on these formulas, we offer exact closed-form expressions for the outage probability, the higher-order amount of fading, and the average bit-error rate of a variety of binary modulations in terms  ...  Another dominant factor affecting the reliability of FSO channels is building sway caused by thermal expansion, wind loads, and weak earthquakes [7] , [8] .  ... 
doi:10.1109/wcnc.2015.7127443 dblp:conf/wcnc/ZediniAA15 fatcat:gajjuzp4fvahbnx7zol737epja

Unified Performance Analysis of Mixed Line of Sight RF-FSO Fixed Gain Dual-Hop Transmission Systems [article]

Emna Zedini, Imran Shafique Ansari, Mohamed-Slim Alouini
2014 arXiv   pre-print
signal-to-noise ratio of these systems in terms of the Meijer's G function.  ...  In particular, we derive new unified closed-form expressions for the cumulative distribution function, the probability density function, the moment generation function, and the moments of the end-to-end  ...  Another dominant factor affecting the reliability of FSO channels is building sway caused by thermal expansion, wind loads, and weak earthquakes [7] , [8] .  ... 
arXiv:1404.1269v1 fatcat:jb6otjzdvzg3rn2przsl4h5sd4
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