Variable speed cascaded doubly fed induction generators (CDFIG) named also double stator induction generators (DSIG) or doubly fed twin stator induction generators (DFTSIG) or also brushless doubly-fed induction generator (BDFIG) can be an attractive alternative to conventional double output wound rotor induction generators. Cascaded doubly fed induction generator (CDFIG) examined in the paper consists of two identical wound rotor induction machines having their rotors mechanically and electrically coupled. The system employs two cascaded induction machines to eliminate the brushes and copper rings in the traditional DFIG. In this case, Cascaded induction generators require lower maintenance. In BDFIG both stators of connected machines are accessible. The control strategy for flexible power flow control is developed. The independent control of the active and reactive power flows is achieved by means of a tow quadrant power converter under the closed-loop stator flux oriented control scheme. The MATLAB simulation software is used for a preliminary investigation of BDFIG.

Variable speed cascaded doubly fed induction generators (CDFIG) named also double stator induction generators (DSIG) or doubly fed twin stator induction generators (DFTSIG) or also brushless doubly-fed induction generator (BDFIG) can be an attractive alternative to conventional double output wound rotor induction generators. Cascaded doubly fed induction generator (CDFIG) examined in the paper consists of two identical wound rotor induction machines having their rotors mechanically and electrically coupled. The system employs two cascaded induction machines to eliminate the brushes and copper rings in the traditional DFIG. In this case, Cascaded induction generators require lower maintenance. In BDFIG both stators of connected machines are accessible. The control strategy for flexible power flow control is developed. The independent control of the active and reactive power flows is achieved by means of a tow quadrant power converter under the closed-loop stator flux oriented control scheme. The MATLAB simulation software is used for a preliminary investigation of BDFIG.

Variable speed cascaded doubly fed induction generators (CDFIG) named also double stator induction generators (DSIG) or doubly fed twin stator induction generators (DFTSIG) or also brushless doubly-fed induction generator (BDFIG) can be an attractive alternative to conventional double output wound rotor induction generators. Cascaded doubly fed induction generator (CDFIG) examined in the paper consists of two identical wound rotor induction machines having their rotors mechanically and electrically coupled. The system employs two cascaded induction machines to eliminate the brushes and copper rings in the traditional DFIG. In this case, Cascaded induction generators require lower maintenance. In BDFIG both stators of connected machines are accessible. The control strategy for flexible power flow control is developed. The independent control of the active and reactive power flows is achieved by means of a tow quadrant power converter under the closed-loop stator flux oriented control scheme. The MATLAB simulation software is used for a preliminary investigation of BDFIG.

In multi-hop ad hoc networks, queuing resources become unavailable under high load. When the traffic increases, the received frames are generally dropped and retransmitted later by the senders after a short timeout. This situation led to more conflicts in accessing the wireless medium and decreases the network performances. In this paper, we propose a new scheme to avoid the bad utilization of wireless medium in high load conditions. Simulations under NS2 have been conducted to study QoS parameters, especially throughput, delay and jitter. The obtained results show that the performances of our proposal are better than those of IEEE 802.11.

In multi-hop ad hoc networks, queuing resources become unavailable under high load. When the traffic increases, the received frames are generally dropped and retransmitted later by the senders after a short timeout. This situation led to more conflicts in accessing the wireless medium and decreases the network performances. In this paper, we propose a new scheme to avoid the bad utilization of wireless medium in high load conditions. Simulations under NS2 have been conducted to study QoS parameters, especially throughput, delay and jitter. The obtained results show that the performances of our proposal are better than those of IEEE 802.11.

The competitiveness of a cement factory depends on the intellectual capital(IC) resources and knowledge management of all the company, as well as on the
ability to use them for competitiveness. But these days the use of the IC and knowledge is not optimal in Algerian enterprises because there is lack of methods
and techniques which give managers some kind of advice how to use properly their own IC/knowledge potential-obviously maximizing advantages for this
company.
It is also the lack of research concerning what each components of both the structure of IC and knowledge influence on gaining competitive advantage and
increasing value of the hole company. the intellectual capital created in the company could have higher efficiency if it is possible to identify all its components
and to know the measurement methods. Also knowledge if used properly increases the value of the company.
The aims of this work is not only to describe all aspects of IC and knowledge management but to present a practical approach to the effective use of both of
them as applied in other companies. We also focus on some determinants of IC/knowledge to give some advices, for employers and employees, about the way
they could increase the value of the company. A comprehensive model of efficiency of IC use which helps in creating values and building competitive
advantage on a large industrial scale.

The competitiveness of a cement factory depends on the intellectual capital(IC) resources and knowledge management of all the company, as well as on the
ability to use them for competitiveness. But these days the use of the IC and knowledge is not optimal in Algerian enterprises because there is lack of methods
and techniques which give managers some kind of advice how to use properly their own IC/knowledge potential-obviously maximizing advantages for this
company.
It is also the lack of research concerning what each components of both the structure of IC and knowledge influence on gaining competitive advantage and
increasing value of the hole company. the intellectual capital created in the company could have higher efficiency if it is possible to identify all its components
and to know the measurement methods. Also knowledge if used properly increases the value of the company.
The aims of this work is not only to describe all aspects of IC and knowledge management but to present a practical approach to the effective use of both of
them as applied in other companies. We also focus on some determinants of IC/knowledge to give some advices, for employers and employees, about the way
they could increase the value of the company. A comprehensive model of efficiency of IC use which helps in creating values and building competitive
advantage on a large industrial scale.