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Data warehouse provides architecture and tools for business executive to systematically organize, understand and use their data to make strategic decision. On the other hand, XML is used for e-commerce and Internet based application. Since many organizations use web for their business purpose, researches has been done for integrating XML data into data warehouse. This paper illustrates an approach...
This article presents a linear approximation approach to the fuzzy goal programming (FGP) formulation of solving multiobjective decision making (MODM) problems with chance constraints. In the proposed approach, first the chance constraints are converted into their deterministic equivalent in the decision making environment. Then, the individual best and worst solutions of each of the objectives are...
In this paper, an optimal aggregation and counter-aggregation (drill-down) methodology is proposed on multidimensional data cube. The main idea is to aggregate on smaller cuboids after partitioning those depending on the cardinality of the individual dimensions. Based on the operations to make these partitions, a Galois Connection is identified for formal analysis that allow to guarantee the soundness...
We modify the macroscopic equations proposed by Valet and Fert for current perpendicular to the plane of a magnetic bilayer. Considering different spin bands for the spin-up and spin-down electrons, we calculate the charge accumulation near the interface along with the spin accumulation. This gives rise to a voltage drop at the interface, and causes the resistance to depend on the relative degree...
The ability to scalably measure one-way packet loss across different network paths is vital to IP network management. However, the effectiveness of active-measurement techniques depends on being able to deploy measurement hosts at appropriate locations, and to inject necessary amounts of probe traffic without impacting the performance of interest. On the other hand, existing passive-measurement methods...
This article describes a goal programming (GP) procedure for proper allocation of teaching personnel to the teaching departments for smooth functioning of the academic activities of a university. In the academic resource planning context, both the crisp and fuzzy goal objectives which are frequently involved with the problem are discussed. Again, certain ratios in the fractional forms which are inherently...
Disturbance observer proposed in this paper estimates the equivalent input disturbance and modifies control law to reject it. A reduced order observer is used to estimate disturbance from the input-output measurement when subject to large disturbance. Convergence of disturbance estimator is decided by the observer gain, which is selected through sufficient condition for stability. Simulation studies...
Wireless Sensor Network (WSN) is characterized with limited battery power and limited computation capability. Sensor nodes which produce a data set that is different from their counter parts are called Outlier nodes. For example, in a particular room, if we expect temperature of 25degC and if we receive a temperature reading of 73degC. This is called outlier data and the node which produces this data...
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