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As the resources in Grid computing environment are more heterogeneous, geographically distributed, complex and owned by different organizations they are more prone to failures and hence in Grid computing environment, application scheduling is very crucial. There are various techniques used to deal and recover from the failure. One of the most efficient and usable approach is Check pointing. Generally,...
The prognosis and diagnosis of evaluating the oil quality for high voltage electrical power transformers for maintenance is ever-demanding. The durability of transformers function is somewhat driven by the excellence of its insulation which degrades with time because of changes in temperature and content of moisture. The accurate diagnoses of faults in early stages and the efficient assessment of...
With the integration of DGs to utility side, drastic changes in fault current occurs across the system at different locations in a microgrid. In this paper different types of faults in microgrid system are investigated through simulation using Simulink-MatLab. The impacts of inverter interfaced DGs on fault current and importance of adaptive protection issues for islanded and utility microgrid are...
The fault current at a particular node in microgrid system varies depending upon its grid connected and islanded mode of operations. In this scenario microgrid the function of microgrid central protection unit becomes challenging to maintain its simplicity and reliability during protection coordination. To make protection system more reliable and to minimize complexity and dependency of central adaptive...
Finding location in wireless sensor network (WSN) is a basic and crucial issue because sensed data without location information is useless. Mainly localization algorithms can be categorized into two classes: range-free and range-based. Range-free algorithms are more cost-effective than range based schemes; an additional ranging hardware is needed in range based algorithms. In this paper, we present...
Efficient use of energy resources is the one of most challenging research issue in wireless sensor networks, because the battery limits the lifetime of the sensor nodes. To enhance the energy efficiency the clustering hierarchical architecture is most favorable approach. In clustering, the network is divided into sections known as clusters and each cluster selects a leader among the cluster members...
Sensor networks have emerged a very dynamic and effective field in wireless communication for low cost and ultra low power regime. Efficient deployment, relocation of sink, routing topology and energy management of sensor nodes are very essential for reliable and uniform energy utilization in the network. The fixed sink topology has a limitation of fast energy depletion of nearby nodes to the sink...
The paper describes the different level in asymmetrical cascaded multilevel inverter using various level-shifted carrier-based PWM techniques. And with Series and parallel combination of switches helps in reducing the semiconductor current and voltage rating. The laod taken is IM load. For different levels, No. of H Bridge are increased to get the desired result. Simulation technique that is MATLAB-SIMULINK...
A large number of transformers of various voltage and capacity ratings are used in distribution system. Large and medium capacity transformers use mineral oil for cooling. Small capacity transformers for outdoor application are oil filled whereas for indoor applications dry type or synthetic oil filled transformers are generally used. A huge quantity of crude oil is imported for producing petrol,...
In Grid computing environment application scheduling is very crucial because the resources are more heterogeneous, geographically distributed, complex and owned by different organizations, they are more prone to failures. Generally, during application/job scheduling only performance factor of resources are considered. But if a node with high computational power also have high failure rate, then there...
Wireless sensor networks are highly valuable for many location - sensitive applications. Ordinarily, with the location of only a few sensors whose location is already known, localization algorithms work for estimation of remaining sensor positions. In this paper, Flower Pollination (FP) algorithm is used for WSN localization problem. The node's position calculated using FP algorithm is compared with...
Relevant information retrieval from the www mainly depends on the technique and efficiency of a crawler. So crawlers must be capable enough to understand the text and context of a link which they are going to crawl. Anchor text contains a very useful information to know about the target web page. Because knowledge about the target web page content helps the crawlers to decide their preferences of...
The element failure detection of antenna arrays is a practical issue in communication field. The sidelobe power level increases to an unacceptable level due to element failure conditions. In this paper, the problem of antenna array failure detection has been solved using Bat Algorithm (BA). A fitness function has been developed to obtain the error between degraded sidelobe pattern and estimated sidelobe...
Cloud computing is basically to perform computation on a centralized facility provided by third party. It also provides storage facilities operated by the third party. Cloud computing allows us to hire entire platform for software development, hardware resources or setup a platform in house. Cloud computing offers everything as-a-service. It provides infrastructure as-a-service, platform as-a-service,...
Link Context Analysis has been widely explored for determining the context of the target web page. But most of the researchers have only considered descriptive or meaningful anchor text and left the undiscriptive anchor text. By researching the World Wide Web it is analyzed that a good percentage of web pages can be reached by following the undescriptive anchor text. So an algorithm has been proposed...
In every organization, fast information access and making right decisions based on the information accessed is very important. A good data warehouse provides efficient information extraction and decision making. In this paper focus is on the estimation of quality of data warehouse conceptual models using quality metrics. An empirical study is performed on the data collected using various statistical...
Nowadays usages of web is increasing at a fast pace. Most of web pages contain text written in natural language. Humans can read web pages and understand them, but the inherent meaning is not available in a structured form that computers can interpret. The understanding of the meaning of text is indispensable to make machines to better understand text in human language. This paper presents an approach...
In this paper, the problem of antenna array failure has been addressed using Differential Evolution (DE) Algorithm by controlling only the amplitude excitation of array elements. A fitness function has been formulated to obtain the error between pre-failed pattern and measured pattern and this function has been minimized using DE. Numerical example of large number of element failure has been considered...
In Grid computing environment, as the resources are more heterogeneous, geographically distributed, complex and owned by different organizations, they are more prone to failures. Application scheduling in such a environment is very crucial. Generally, during application/job scheduling only performance factor of resources are considered. But if a node with high computational power also have high failure...
In recent years, semantic search for relevant documents on web has been an important topic of research. Many semantic web search engines have been developed like Ontolook, Swoogle, etc that helps in searching meaningful documents presented on semantic web. The concept of semantic similarity has been widely used in many fields like artificial intelligence, cognitive science, natural language processing,...
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