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Communication among relevant persons in a right time is a main factor for the success in the area of agriculture industry. We argue that Multi-agent technology can be used to handle the required communication successfully among related persons in the agricultural sector. In the agricultural industry, farmers, buyers, sellers and technical instructors are the key persons and they need to communicate...
Machine Fault Diagnosis and condition monitoring using Acoustic Emission and Vibration Signature is an active research area of much industrial importance. Pre-Processing is an important stage after data acquisition. In this paper we have presented a preprocessing scheme which includes a filter, a smoothing algorithm, a novel segmentation technique and a normalization algorithm which is less affected...
Caching is the most widely used solution to improve the memory access speed of a processor. Behaviour of a cache memory is characterized by several parameters such as the set size, associativity, block size and replacement policy which compose the configuration of the cache. Cache hits and misses encountered by an application are decided by the configuration. While a cache improves the memory performance,...
Compacted Dither Pattern Code (CDPC) is a recently found feature which is successful in irregular shapes based visual depiction. Locally salient dither pattern feature is an attempt to expand the capability of CDPC for both regular and irregular shape based visual depiction. This paper presents an analysis of rotational and scale invariance property of locally salient dither pattern feature with a...
Parallel processing is a complex topic found in computing education and has become an essential topic in the curricula owing to the recent developments in both software and hardware. Ensuring access to parallel computers in order to provide a better education at universities is not guaranteed due to the high cost of these devices. Alternatively, parallel processing can be taught using simulators....
Traditionally ‘Shopping’ is a phenomenon where a customer and the merchant meet face to face in order to exchange goods and services for a payment, in a live environment; that experience cannot be virtualized by online-shopping which cannot give the real feeling of shopping and can create more disadvantages rather than the advantages it introduces. According to observations regarding real-time shopping...
Imperceptibility and the embedding capacity are the two most important aspects to be concerned in any image based steganographic research studies. It is necessarily considered to maximize the amount of embedding capacity while preserving the security against detection by unauthorized people in any steganographic methods. Many research studies have exposed that the modified quantization tables significantly...
In this paper, a nonlinear controller is designed for variable speed wind turbine (WT) where the dynamics of the WT is derived for single mass model. The main aim of the controller is to extract the optimum power capture from the wind and minimize the transient load on low speed shaft. Modified Newton Rapshon (MNR) is used to estimate the effective wind speed and the optimal rotor speed is derived...
A common technique employed to eliminate switching harmonics is programmed SHE (Selective Harmonic Elimination) which requires the solution of a set of nonlinear equations. Typically, the method calculates the switching angles for each modulation depth offline using iterative computations and programmed into a digital processor. These values are recalled on a need basis for a particular application...
This paper proposes a method of condition assessment of generator stator winding insulation by simultaneously fitting time variation of Insulation Resistance (IR) and DC Ramped voltage plots. The insulation conductivity (σ), permittivity (ε) and response function (f(t)) was used for the assessment. A novel model which derived starting from the frequency domain dielectric response is proposed to model...
This paper presents the possibility of using Frequency Domain Dielectric Spectroscopy (FDS) measurement as a condition monitoring tool for Current Transformers (CT). A 132 kV live tank type CT was thermally aged in the laboratory for 840 hours by injecting twice the rated current from the CT's secondary side. The FDS responses were periodically measured and modeled using dielectric response functions...
City logistics is facing the challenging problem of providing a quick-response and on-time delivery service in congested urban areas with frequent traffic jams. The dynamically changing traffic conditions make the predetermined best transportation plans suboptimal and consequently cause increased logistics cost and even greater air pollution. To help the driver determine time-optimal routing solutions...
Real-time robust tracking for multiple non-rigid objects is a challenging task in computer vision research. In recent years, stochastic sampling based particle filter has been widely used to describe the complicated target features of image sequence. In this paper, non-parametric density estimation and particle filter techniques are employed to model the background and track the object. Color feature...
E-Learning becomes widely spread in the past few years because it enables learner to participate in anytime, anyplace personalized training. Designing rich E-Learning environment is an important factor to enhancing the effectiveness of web based education. Therefore the necessity of evaluating the web based E-Learning content is arising. The evaluation of E-Learning content is beneficial for learner...
In this paper we present brain maps constructed for Visualization of Arrow Movement (VAM) mental tasks with EEG signals recorded from 20 locations on the scalp. Method of Common Spatial Patterns (CSP) is employed to generate the spatial maps after filtering raw EEG signals into nine different frequency bands. Separate CSPs were obtained for six subjects who participated in this study. These brain...
Web crawlers are software programs that automatically traverse the hyperlink structure of the world-wide web in order to locate and retrieve information. In addition to crawlers from search engines, we observed many other crawlers which may gather business intelligence, confidential information or even execute attacks based on gathered information while camouflaging their identity. Therefore, it is...
In this paper, a method is proposed to maximize the accuracy during the feature extraction stage in a real time system for hand gesture recognition by escalating the number of parameters of the feature set for support vector machine. Numerous former researches utilized hu moments but they didn't correspond to the complete description of an image, and was suitable only for giving very rough estimation...
Coconut oil has been reported as a potential alternative for mineral oil when used as the power transformer liquid insulation. However, the information on dielectric properties of coconut oil impregnated transformer solid insulation i.e. paper and pressboard are still lacking. This paper presents variations of capacitance and dielectric losses of coconut oil and mineral oil impregnated pressboard...
This paper presents the design and simulation of a quantum tunneling composite (QTC) based tactile sensor structure for gripping force measurement. The design presents a tactile sensing element capable 1-DOF force sensing in the z-direction. QTC is a novel electrically conductive elastomeric matrix-nanostructured nickel powder composite. QTC has extremely large, reversible increases in conductivity...
RC4 is the most widely used stream cipher around. A lot of modifications of RC4 cipher can be seen in open literature. Most of them enhance the secrecy of the cipher and the security levels have been analyzed theoretically by using mathematics. In this paper, a new effective RC4 cipher is proposed and the security analysis has been done using Shannon's Secrecy theories where numerical values are obtained...
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