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Cluster computing has been widely used in various fields from academics to industry because of its technical advantages. Recently, cloud computing become more attractive, as cluster computing is one of the core basements of cloud computing. However, the development of cluster-based system is hard without relative knowledge such as networking, workload distribution, fault tolerant, etc. Thus, various...
Autonomous landing is a challenging and important task for rotorcraft-based unmanned aerial vehicle (RUAV). This paper presents an autonomous landing algorithm for RUAV. The accurate landing is achieved by generating reference trajectory using near-minimum-time maneuver method and tracked with Lyapunov stabilizing approach. Along with this the testing environment for RUAV is developed to validate...
This paper is about one more method for the hand gesture recognition algorithms. Described system in this paper doesn't require wearing any device or gloves for the subject's hand. For detecting hand motion, simple stereo camera is needed. The actual difference of suggested method in this paper with previous works is we are using grayscale histogram to define depth threshold of calculated disparity...
Efficient traffic control systems are required in towns and cities around the world. As the number of vehicles increase, and new infrastructure is less viable; high levels of mobility become essential. This work proposes a strategy for Intelligent Transportation Systems (ITS), in particular for the task of adaptive signal management. This approach is based on Complex Event Processing (CEP). Event...
User Created Robots (UCRs) are personal robots that consist of toy blocks. Usually user controls UCR via short-range wireless communications such as IR, ZigBee, Bluetooth and so on. However, this current technology has some spatial limitations. UCR remote control system gives extension of UCR related services and activities. Also this system allows in conjunction with e-education services and other...
This paper proposes a classification method based on Complex Event Processing (CEP) for mammogram images. For breast cancer detection and early prevention, several factors must be considered. Mammogram is important and effective in breast cancer diagnosis. The Radiologist must analyze visually, based on his expertise, to determine whether it is cancer or not. We explore the use of CEP for breast cancer...
In Unmanned Aerial Vehicle system, the application software is large and becoming hard to meet the real-time application. UAV system may suffer faults in the controlled plant as well as in the execution platform. The execution platforms support a modern real-time embedded system, but distributed architecture is made of heterogeneous components that may incur transient or permanent faults. In the proposed...
This paper is to survey video encryption algorithms field which becomes as an important field nowadays. As an increasing rate of applying video is getting high, the security of video data becomes more important. In this paper listed several famous encryption schemes which have their own advantages and cryptographic stability. Three main classes of video encryption techniques are studied. Given encryption...
Secure data transmission and data routing are critical in designing cluster based sensor network. This paper presents a secure energy efficient dynamic routing scheme (SEEDR) for wireless sensor networks. SEEDR uses a symmetric cryptography algorithm to support security. The dynamic key exchange protocol based on DH (Diffie-Hellman) algorithm is proposed, with non blocking OVSF codes. Our analytical...
This paper uses Model Predictive Control (MPC) technique to generate a safe motion plan for model helicopter. MPC is a feedback control scheme in which a trajectory optimization is solved at each time step. The first control input of the optimal sequence is applied and the optimization is repeated at each subsequent step. Recent developments in modeling helicopter motion planning have shown that trajectory...
Social networks has changed the way we use Web. There is a huge amount of data created and generated by users. There is an obvious question about who owns your data you created. Can you take your data (FOAF information, bookmarks, tags, photos etc) as you leave the service? Browsing, tagging and bookmarking pattern can easily raise the issues of privacy. People are separated over many existing social...
Cloud computing has emerged as a popular computing model to support processing volumetric data using clusters of commodity computers. Nowadays computational world is opting for pay-for-use models and hype and discussion aside, there remains no canonical definition of cloud computing. In this paper we proposed a wide spectrum of taxonomy for cloud computing, aiming at a better understanding of the...
This paper presents a novel method based on fractal features for the classification of mammogram images. For recognition of regions and objects in the natural scenes, there is always a need for features, which are invariant, and they provide a good set of descriptive values for the region. There are numerous methods available to estimate parameters from the images of the fractal surface. In this paper...
Artificial Neural Networks (ANNs) are widely applied nowadays for classification, identification, control, diagnostics, recognition, etc. They can be implemented for identification of dynamic systems. The concept of ANN is highly used in design and simulation of control system of Unmanned Aerial Vehicles (UAVs). Controller design for UAV is subject to time varying and non-linear model parameters....
Many products with embedded electronic systems demand high reliability and high security, such that they can be trusted to operate in safety-critical applications. Safe and secure system engineering requires designers to consider all the consequences of errors and intrusions in their systems in addition to normal modes of operation. The proposed system for embedded control system meets the requirements...
A Grid is a large-scale, geographically distributed hardware and software infrastructure for flexible, secure, and coordinated sharing of vast amounts of heterogeneous resources within large, dynamic and distributed communities of users belonging to virtual organizations, to enable solving of complex scientific problems. From the perspective of one computer, such network partitioning may appear as...
The computational world is becoming very large and complex. Cloud Computing has emerged as a popular computing model to support processing large volumetric data using clusters of commodity computers. According to J.Dean and S. Ghemawat [1], Google currently processes over 20 terabytes of raw Web data. It's some fascinating, large-scale processing of data that makes your head spin and appreciate the...
Web 2.0 provides functionality of social content based on data generated by users. Users spend their time by browsing content and look for interesting contents using keyword search. Those contents are posted and shared for their interesting tastes by like-minded people. New and popular contents, keywords, or recommendations may also be offered to users by their friends. People are separated over many...
To handle the complexity in avionic systems, the application software are large and becoming hard to meet the real-time capabilities. The proposed architecture for avionics control system meets the requirements of fault tolerance as a major issue. Fault tolerance proposed in this paper is based on redundancy; permanent faults are covered by hardware replication, transient faults, and fault detection...
We report the observation of low-frequency oscillations (LFOs) in the range 165-180 MHz in a 1.5-MW 110-GHz gyrotron operating in 3-mus pulses. The oscillations have been measured by a capacitive probe located just before the entrance to the cavity. The LFOs are observed only in a narrow region of beam parameter space, at voltages between 45 and 60 kV, where no microwave emission occurs. When the...
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