Publications scientifiques: Recent submissions

  • Orders of solutions of an n-th order linear differential equation with entire coefficients 
    Belaıdi, Benharrat; Hamouda, Saada (Electronic Journal of Differential Equations, 2001)
    We study the solutions of the differential equation f (n) + An−1(z)f (n−1) + · · · + A1(z)f 0 + A0(z)f = 0, where the coefficients are entire functions. We find conditions on the coefficients so that every solution ...
  • Growth and oscillation of solutions to linear differential equations with entire coefficients having the same order. 
    Belaïdi, Benharrat (Electronic Journal of Differential Equations (EJDE)[electronic only], 2009)
    Line 1 i open parenthesis f closing parenthesis= open brace sub plus infinity comma to the power of minimum to the power of 0 comma open brace j in N: rho sub j open parenthesis f closing parenthesis less plus infinity ...
  • Oscillation of fixed points of solutions of some linear differential equations. 
    Belaïdi, B (Acta Mathematica Universitatis Comenianae, 2008-10-01)
    In this paper, we investigate the relationship between solutions and their derivatives of the differential equation f (k) + A(z)f = 0, k ≥ 2, where A(z) is a transcendental meromorphic function with ρp(A) = ρ > 0 and ...
  • Growth of solutions to linear differential equations with analytic coefficients of [p, q]-order in the unit disc 
    Belaıdi, B (Electron. J. Diff. Equ, 2011-04-01)
    In this article, we study the growth of solutions to complex higherorder linear differential equations in which the coefficients are analytic functions of [p, q]-order in the unit disc.
  • Modeling and enforcing security and service control policies using FlexRFID middleware: Healthcare scenarios 
    Mehdia Ajana El Khaddar; Mhammed Chraib; Hamid Harroud; Mohammed Boulmalf; Mohammed Elkoutbi; Abdelilah Maach (2014 Science and Information Conference, 2014-08-27)
    RFID and WSN technologies are widely used in today’s pervasive computing. In Wireless Sensor Networks, sensor nodes sense the physical environment and send the sensed data to the sink by multi-hops. WSN are used in ...
  • System identification of inventory system using ARX and ARMAX models 
    Sofia Rachad; Benayad Nsiri; Bahloul Bensassi (2015)
    This paper presents a mathematical model of an inventory system from the warehouse of goods Distribution Company using system identification approach. Considering items ordered from suppliers and items shipped to customers, ...
  • An empirical study of wifi security and performance in morocco-wardriving in rabat 
    A Sebbar; SE Boulahya; G Mezzour; M Boulmalf (2016 International Conference on Electrical and Information Technologies (ICEIT), 2016-05-04)
    Morocco is an important regional ICT player that offers interesting investment opportunities to many national and international companies. It is important for these companies to have a good understanding of network performance ...
  • Improved positioning using gsm and gnss tight hybridization 
    Philippe Paimblanc; Wilfried Chauvet; David Bonacci; T Sadiki; F Castanié (Proc. of the European Navigation Conf. on Global Navigation Satellite Systems (ENC–GNSS08), 2008-04)
    Prof. Francis Castanié has got his PhD and his Doctorate of Sciences degree from National Polytechnics Institute of Toulouse (INPT) respectively in 1971 and 1977. He teaches essentially Signal Processing at the undergraduate ...
  • An analytic and experimental study on the impact of jitter playout buffer on the E-model in VoIP quality measurement 
    Olusegun Obafemi; Tibor Gyires; Yongning Tang (The 10th International Conference on Networks, 2011)
    —Over the years, the quality in Voice over IP (VoIP) applications has been defined from the perspective of VoIP service providers but not necessarily from the perspective of end-users. Conversational quality as perceived ...
  • A new secure network architecture to increase security among virtual machines in cloud computing 
    Zakaria Elmrabet; Hamid Elghazi; Tayeb Sadiki; Hassan Elghazi (Advances in Ubiquitous Networking, 2016)
    Cloud computing is a new model of computing which provides scalability, flexibility and on-demand service. Virtualization is one of the main components of the cloud, but unfortunately this technology suffers from ...
  • A planning algorithm for distributed manufacturing 
    Tibor Gyires; Balakrishnan Muthuswamy ([1993] Proceedings International Conference on Intelligent and Cooperative Information, 1993-05-12)
    Distributed manufacturing (DM), downsizing, and outsourcing are becoming increasingly popular. Processes in manufacturing a product may be distributed at d@ererat (geographical) sites. A production plan in such ...
  • Context-based services discovery in mobile environments 
    Y, Bouzid; H Harroud; M Boulmalf; A Karmouch (2009 International Conference on Telecommunications, 2005-05-25)
    Mobile and Ubiquitous computing have increased the need for mobile users to expect accessing preferred services, whenever they want and wherever they are. Users do not have to explicitly specify and configure their ...
  • An approach to avoid traffic congestion using VANET 
    Hamza, Toulni; Benayad, Nsiri; Mohammed, Boulmalf; Mohammed, Bakhouya; Tayeb, Sadiki (2014 International Conference on Next Generation Networks and Services (NGNS), 2014-05-28)
    Roads’ overload remains a major challenge although they are constantly expanded in order to increase their capacity and improve their efficiency. This tends to cause many problems: environmentally, economically and ...
  • Using active networking for congestion control in high-speed networks with self-similar traffic 
    Tibor, Gyires (Smc 2000 conference proceedings. 2000 ieee international conference on systems, man and cybernetics.'cybernetics evolving to systems, humans, organizations, and their complex interactions'(cat. no. 0, 2000)
    Various papers discuss the impact of burstiness on network congestion. Their conclusions are that congested periods can be quite long with packet losses that are heavily concentrated. Several conventional methods have ...
  • FlexRFID middleware in the supply chain: strategic values and challenges 
    Mehdia, E Ajana; Hamid, Harroud; Mohammed, Boulmalf; Mohammed, Elkoutbi (nternational Journal of Mobile Computing and Multimedia Communications (IJMCMC), 2011-04-01)
    Radio Frequency Identification (RFID) was used since the Second World War to identify “friend or foe” aircrafts. Recently, it is becoming an enabling wireless technology which is widely employed in a number of application ...
  • Rfid middleware design and architecture 
    Mehdia, Ajana El Khaddar; Mohammed, Boulmalf; Hamid, Harroud; Mohammed, Elkoutbi (Designing and Deploying RFID Applications, 2011-06-15)
  • Real-time system specifications based on uml scenarios and timed petri nets 
    Mohammed, Elkoutbi; Mohamed, Bennani; Rudolf, K Keller; M, Boulmalf (the 2nd IEEE International Symposium on Signal Processing and Information Technology (ISSPIT'02),(Morocco), 2002-11)
    In this paper, we suggest a requirement engineering process for real-time systems that yields a formal specification of the system using timed Petri nets. Scenarios are acquired in form of sequence diagrams as defined ...
  • Blind submarine seismic deconvolution for long source wavelets 
    Benayad, Nsiri; Thierry, Chonavel; Jean-Marc, Boucher; Hervé, Nouzé (IEEE Journal of Oceanic Engineering, 2007-07)
    In seismic deconvolution, blind approaches must be considered in situations where reflectivity sequence, source wavelet signal, and noise power level are unknown. In the presence of long source wavelets, strong interference ...
  • Internet traffic modeling with lévy flights 
    György, Terdiky; Tibor, Gyires (Seventh International Conference on Networking (icn 2008), 2008-04-13)
    Measurements of local and wide-area network traffic in the 90's established the relation between burstiness and self-similarity of network traffic. Several papers demonstrated that the widely used Poisson based models could ...
  • Dynamic channel assignment in IEEE 802.11 g 
    Mohammed, Boulmalf; Tarik, Aouam; Hamid, Harroud (2008 International Wireless Communications and Mobile Computing Conference, 2008-08-06)
    In this paper, we propose a dynamic channelassignment algorithm which minimizes the total interferences between Access Points (APs) of a Wireless Local Area Network (WLAN), while maintaining the Signal to Interferences ...

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