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The grid is an heterogeneous distributed environment, it has many new characteristics that are different with the traditional Internet, for example, it have many users and resources. These characteristics have decided complexity of the grid safety mechanism. Thus security is an important element of the practical of grid computing technology. In paper, we described a hybrid model of authentication...
This paper proposes an improved soft switched synchronous buck converter in a fixed load condition. The switching energy can be fully recovered during current commutation phase in the gate driver while the diode conduction losses in the low and high side switches can be substantially reduced by employing additional L and C resonant in the circuit. Using PSpice simulation, the optimization technique...
The carrier velocity for 2-dimensional (2-D) p-type nanostructure was simulated in this paper. According to the energy band diagram, the effective mass (m*) in the p-type silicon is mostly dominated by heavy hole because of the large gap between heavy hole and light hole in k = 0. The carrier concentration calculation for 2-D, based on the Fermi-Dirac statistic on the order of zero (F0 ), was applied...
This paper presents the study of electromagnetic interference effect from power line noise in Malaysia to electrocardiograph (ECG) signal. The study includes the design of ECG circuits that is used to eliminate the power line noise from the signal. The ECG system basically is a combination of instrumentation amplifier, high pass filter, low pass filter, and notch filter. There are several other circuits...
Vertical MOSFETs device have one important disadvantage, which is higher overlap capacitances such as the separated gate-source and gate-drain parasitic capacitances (CGSO and CGDO), which is known to be most crucial to the high-frequency/speed performance but very hard to extract. In this paper presents parameter extraction techniques to create an extended BSIM model card of vertical p-MOSFETs for...
This paper presents the general design of microstrip antennas using artificial neural networks for rectangular patch geometry. The design consists of synthesis in the forward side and then analyzed as the reverse side of the problem. In this work, the neural network is employed as a tool in design of microstrip antennas. The neural network training algorithms are used in simulation of results for...
The process of meta-scheduling is a key feature in the architecture of typical computational grids. Many meta-schedulers have reached maturity obstacles that slow down their use. On one hand, some meta-schedulers are tied to an environment requiring users to adopt the whole infrastructure in order to use them. On the other hand, remaining meta-schedulers are difficult to deploy. Generally speaking,...
Over the past few decades, unprecedented growth in wireless communications, networking and video-coding technologies have stimulate numerous applications such as video on demand and interactive video telephony. Ultrawideband technology (UWB) which offers high data rate with low transmit power, becomes a very promising wireless platform for video transmission. Recently, cognitive radio (CR) technology...
An autonomous robot finds applications in process industries to perform control operations such as manipulation of valves, especially in hazardous environments. This would require localization and mapping capabilities for efficient navigation, coupled with a dexterous arm for manipulation of the valves. Dynamic path planning and obstacle avoidance are the necessary requirements for autonomous navigation...
Critical chain project management (CCPM) has been introduced in 1997 by Goldratt which was known for its theory, theory of constraint. Since then CCPM attracted a great attention both in academic world and execution communities. One of the most controversial points of the CCPM which is a subject of critics is the way it suggests for activity duration estimation. This paper proposes a new method for...
Because of continuous changes in the market and the todaypsilas competitiveness world, most of manufacturing firms are competing for meeting demand, increasing quality and decreasing costs. Today, manufacturing firms are required to select a suitable flexible manufacturing system (FMS) to keep their share of the market. We propose a procedure for evaluating the flexible manufacturing systems based...
Due to the inherent complexity of many real-world problems, classification models have become an important tool for solving pattern recognition tasks in many disciplines such as medicine, finance and management. Accuracy and transparency are two important criteria that should be satisfied by any classification model. In this paper, a transparent and relatively accurate classifier is developed using...
An appropriate pre-processing algorithm in classification is not only of great importance with respect to classifier choice, but also would be more crucial. In this paper, a pre-processing step is proposed in order to increase accuracy of classification. The aim of this approach is finding a transformation matrix causes classes to be more discriminable by transforming data into the new space and consequently,...
Nowadays, content distribution is of high attention in peer to peer information systems. There are two main problems that could be mentioned in this context. The first problem is how to disseminate fragments of information efficiently and the next is to avoid missing same rare fragments towards end of download. For overcoming these problems, a new mechanism is presented in this paper which uses gossip...
Reduced ordered binary decision diagram (ROBDD) is a memory-efficient data structure which is used in many applications such as synthesis, digital system, verification, testing and VLSI-CAD. The size of an ROBDD for a function can be increased exponentially by the number of independent variables of the function that is called ldquomemory explosion problemrdquo. The choice of the variable ordering...
This paper presents the detailed account on the control design of a buck converter driven dc motor. Proportional-integral (PI) and proportional-integral-type fuzzy logic controller (PI-type FLC) are the techniques proposed in this investigation to control the speed of a dc motor. The dynamic system composed from converter/motor is considered in this investigation and derived in the state-space and...
An abstract interpretation of an adaptive neural network is where each cell is considered as an agent that has internal states and interaction rules along with a set of strategies that modulates its internal states and its interaction with neighboring agents. While the internal states are governed by the processing equation, the selection of strategies is governed by the learning equations. Adaptivity...
A call center is an organizational unit where inbound calls are received or outbound calls placed for the purposes of sales, support, advice and other business transactions. By applying knowledge management solutions, we can meet call centerspsila challenges and gain benefits of reduced training costs, improved call handling and greater flexibility. This paper describes a solution to agent mediated...
In beyond 3G networks, the adequate design of the transmission network that diverts the data traffic of the NodeBs to the core network is an important challenge. Due to the deployment of new radio access technologies, and the dramatic traffic increase, the network operators tend to apply traffic aggregation techniques within their transmission network to reach higher utilization. This paper presents...
This paper presents the use of anti-sway angle control approaches for a two-dimensional gantry crane with disturbances effect in the dynamic system. Delayed feedback signal (DFS) and proportional-derivative (PD) controller are the techniques used in this investigation to actively control the sway angle of the rope of gantry crane system. A nonlinear overhead gantry crane system is considered and the...
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