Informatics Publishing Limited

Vadhri Suryanarayana ¹, M. V. L. N. Raja Rao ², P. Bhaskara Reddy ³, G. Ravindra Babu ⁴

Affiliations
1 Dept. of CSE and MCA, NRI Institute of Technology, Agiripalli(V), Vijayawada, A.P, IN
2 Dept. of IT, Gudlavalleru Engineering College, Gudlavalleru, A.P., IN
3 MLR Institutions, Hyderabad, A.P., IN
4 Dept. of CS and E, S.C.C.E.T, Hyderabad, A.P., IN

Abstract

Image Retrieval system is an effective and efficient tool for managing large image databases. A content based image retrieval system allows the user to present a query image in order to retrieve images stored in the database according to their similarity to the query image. In this paper content based image retrieval method is used on digital image data set. The main objective of this paper is to evaluate the retrieval system based on Hybrid features. The texture features are extracted by using pyramidal wavelet transform and the shape features are extracted by using Fourier descriptor. And the hybrid technique is the combination of both texture and shape. The major advantage of such an approach is that little human intervention is required. It is ascertained that the performance is superior when the image retrieval based on the Hybrid features, and better results than primitive set.

Keywords

Feature Extraction, Hybrid Features, Image Retrieval.

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V. Radhika Devi ¹, P. Bhaskara Reddy ²

Affiliations
1 Dept.of Science and Humanities, MLR Institute of Technology, IN
2 Dept of ECE, MLR Institute of Technology, IN

Abstract

In recent times, Class-room Assessment Techniques (CATs) have gained momentum in the engineering education. Class-room Assessment Techniques are intended to evaluate the depth of knowledge gained by a student in a particular subject. Class-room Assessment Techniques are understandably useful in development/improvement of curriculum, as these are critical to determine the effectiveness of programs. When first designing a curriculum, it is important to begin by designing the rubrics for assessment. The RISE (Review, Identify, Strengthen, Evaluate)will help to identify the primary goal of the assessment and how can they be modified to improve the quality of engineering education. A well carried out assessment will provide an observable outcome. Without conducting an area specific assessment, it is impossible to know with any certainty what factors are most responsible for not attaining the desired outcome. Therefore, it is likely that assessments created without specific rubrics may not target the appropriate problem factors and will fail. Following from this, it is important that in order for any program to be effective, a proper assessment technique should be designed before the program is rolled out. This paper summarizes the findings of a project investigating the impact of assessment methods on the quality of engineering education. The key findings elaborated in this paper, concern the impact of existing methods of assessment and trends in the outcomes observed.

Keywords

Class Room Assessment Techniques, Rubrics, Review, Identify, Strengthen, Evaluate.

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K. Satish Reddy ¹, K. Praveen Kumar ², P. Bhaskara Reddy ³

Affiliations
1 Department of ECE, Vardhaman College of Engineering, Hyderabad-501218, IN
2 Department of ECE, DRKIST, JNTUH, Hyderabad-500043, IN
3 Department of ECE, MLRIT, Hyderabad-500043, IN

Abstract

The substrate permittivity and loss tangent are critical parameters in controlling band width, efficiency and radiation pattern of micro strip patch antenna. Present paper rectangular patch antenna is designed using a wide range of dielectric materials having same permittivity but with different loss tangent values. A comprehensive study of radiation characteristics of this rectangular patch antenna is investigated. Results such as resonance frequency, bandwidth, gain, return loss, input and impedance are presented.

Keywords

Dielectric Constant, Loss Tangent, Rectangular Patch Antenna, Co-Axial Feed.

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