Browsing PhD Theses by Issue Date
Now showing items 21-40 of 73
-
Bandwidth considerations in miniaturized rectangular dielectric resonator antennas: experimental validation
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)In this thesis, an issue of bandwidth is considered in a rectangular dielectric resonator antenna (RDRA). Two techniques (merging of modes and stacking) of bandwidth im- provement are introduced with miniaturized resonator. ... -
Multi-modal design of an intelligent transportation system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)An Intelligent Transportation System (ITS) plays a major role in generating ne grained vehicular tra c information for city wide or larger region. The real time tra c informa-tion is used to optimize tra c movement in a ... -
Efficient methodologies for package/housing effect on active MMIC and signal integrity problems
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)There has been a great demand in a Computer Aided Design (CAD) tool with a capability of design and analysis of gigahertz system having active Monolithic Microwave -
Novel techniques for auto-inpainting in heritage reconstruction
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)Digital reconstruction of ruined historic monuments and heritage sites can help in visualizing how these may have existed in the past. Also, such a process requires no physical alteration to the existing monuments. This ... -
Crying for a reason : a signal processing based approach for infant cry analysis and classification
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)The present work in this thesis is directed towards understanding the reason of crying of an infant using signal processing approaches. Infant cry analysis and classification is a non-invasive method of analyzing the infant ... -
Similarity preserving dimensionality reduction for image data
(Dhirubhai Ambani Institute of Information and Communication Technology, 2016)Data collection and storage capabilities have increased manifold in last few decades,leading to information overload. Number of variables used to represent each data observation is called dimension of the data and dealing ... -
Design of countermeasures for spoofed speech detection system
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Automatic Speaker Verification (ASV) systems are vulnerable to speech synthesisand voice conversion techniques due to spoofing attacks.Recently, to encourage thedevelopment of anti-spoofing measures or countermeasures for ... -
Secure and efficient dealing with node capture attack in wireless sensor networks
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Wireless Sensor Networks (WSN) have found enormous applications in various areas of day-to-day life such as in health-care, battle-field surveillance and disaster management. The communication amongst the sensor nodes ... -
Wavelets and filter banks: novel approaches for real and complex-valued transform designs
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Processing of natural images stored as 2-D discrete signals is an inevitable task in almost all areas of image processing. In order to have the desired processing results, directional image representation can be considered ... -
Design of QbE-STD System: audio representation and matching perspective
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)The retrieval of the spoken document and detecting the query (keyword) within the audio document have attained huge research interest. The problem of retrieving audio documents and detecting the query (keyword) using a ... -
Dense disparity estimation using stereo images
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)"“Stereo vision” refers to the ability to infer information on the three-dimensional (3D) structure and distance/depth of a scene using two images captured from different view-points. It imitates one of the tasks performed ... -
Efficient, revocable and auditable access over encrypted cloud data
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Cloud data outsourcing services can potentially help reduce the IT budget of organizations. However, they pose significant risks to the security and privacy of the data as the data is outsourced to untrusted third-party ... -
Design and analysis of distortion reduction techniques in direct conversion receiver
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Direct-conversion is alternative wireless receiver architecture to the well-established super heterodyne architecture. Direct-conversion receiver (DCR) can offer highly integrated, low-power and low-cost hardware Solutions ... -
Signal processing methods for robust heart rate estimation from multimodal physiological signals
(Dhirubhai Ambani Institute of Information and Communication Technology, 2017)Cardiovascular diseases are the major cause of world-wide mortality. Heart rate (HR) and heart rate variability (HRV) are important health parameters to monitor functioning of heart of cardiac patients. Multimodal physiological ... -
Design and analysis of schemes for privacy preserving cloud storage services
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Public cloud storage services have become the leading choice for individuals and organizations to store their data, as the service provides the benefits of availability and reliability together at a reduced cost. While ... -
From extractive to abstractive summarization: a journey
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Research in the field of text summarisation has primarily been dominated by investigationsof various sentence extraction techniques with a significant focus towards news articles.In this thesis, we intend to look beyond ... -
Variants of orthogonal neighborhood preserving projections for image recognition
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)With the increase in the resolution of image capturing sensors and data storagecapacity, a huge increase in image data is seen in past decades. This informationupsurge has created a huge challenge for machines to perform ... -
Developing a framework of agriculture knowledge management process in Indian context
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)In the current economy of global competition, many organizations are using knowledge as one of the means to gain sustainable competitive advantage. Knowledge is becoming a critical success factor for organizational ... -
Auditory representation learning
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Representation learning (RL) or feature learning has a huge impact in the field of signal processing applications. The goal of the RL approaches is to learn the meaningful representation directly from the data that can be ... -
Between insularity and cosmopolitanism: a study on the relation between Urban Space and Urban Identity in modern Baroda
(Dhirubhai Ambani Institute of Information and Communication Technology, 2018)Located in the State of Gujarat, the city of Baroda or Vadodara is described a Sanskarnagri, the state's cultural capital and a cosmopolitan urban space. This thesis challenges this image of Vadodara and its current city ...