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Determined by the development of new types of routing protocols, the process of designing of the new topologies had radically changed the last years. At the modern time this designing process should take into account all the existing services and also the ones that could be implemented in the future if we keep in mind the fact that at present we witness an amazing development of the traffic generated...
Dynamic Multipoint IPsec VPNs (DMVPN) is a software optimization technique proposed firstly by the Cisco Company to overcome the limitations of the classical Virtual Private Network (VPN) implementations. In this paper, we discuss and simulate a DMVPN phase2 (spoke to spoke tunnel). The implementation and simulation is carried in GNS3 network simulation software.
This paper presents a numerical method in order to measure and analyze the charging characteristics of storage batteries for PV power systems. The measurement data is retrieved from the PV modules by a specific data acquisition system. A numerical algorithm developed in the Matlab/Simulink environment is used to model the charging characteristics of the batteries connected to a PV system. Through...
This paper proposes an advanced software application for parking services. It's aim is to offer a modern solution for car drivers in order to reserve in advance and to find the optimum solution for a parking place near the destination. A real time communication system and original algorithms are implemented. The proposed software application eliminates the time spent for finding a parking space, reduces...
This paper deals with the mathematical model to assess the performances of photovoltaic (PV) cells. The PV system characteristics are modeled and analyzed by using the curve fitting method referred to the different connections of PV cells and different solar irradiance. The results are compared with those resulting from measured data in a real case. Specific LabVIEW™ and Matlab™ software applications...
The work develops an analytical model for HBT's Gummel plots, based on thermionic-field-emission theory. This new model is easier to apply for usual HBT's Gummel characterization. Its validity was demonstrated by analysis of the experimental results of silicon nitride passivated InP/InGaAs heterojunction bipolar transistors.
This work presents a new explanation of the abnormal injection phenomena at emitter-base junction of the silicon nitride passivated InP-based heterojunction bipolar transistors. We have suggested that the emitter mesa sidewall is accumulated and that thermionic field emission from this zone becomes the principal component of the collector current. The proposed theoretical model is in good agreement...
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