An Energy Saving Multi-Directional Routing Protocol for Mobile Ad-hoc Networks

The limited battery energy is an important consideration in the effective operation of an Ad- hoc network. We propose a protocol named as Energy Saving Multi Directional Routing (ESMDR) that provides a lower energy cost effective routing solution. The performance evaluation of our protocol is carried out using a statistically collected data over Dynamic Source Routing (DSR) and Ad-Hoc On-Demand Distance Vector (AODV) protocol. Analysis exhibits a clear edge over the existing protocol

A cognitive approach for evaluating the usability of Storage as a Service in Cloud Computing Environment

Cloud computing is a style of computing which thrives users requirements by delivering scalable, on-demand and pay-per-use IT services. It offers different service models, out of which Storage as a Service (StaaS) is the fundamental block of Infrastructure cloud that fulfills user’s excess demand of elastic computing resources.  But considering the competitive business scenario choosing the best cloud storage provider is a difficult task. Thus, usability is considered to be the key performance indicator which evaluates the better cloud storage based on user’s satisfaction. This paper aims to focus on the usability evaluation of StaaS providers namely Google drive, Drop box and One drive. This paper proposed a fuzzy based AHP model for measuring user satisfaction. Usability evaluation is carried out based on user feedback through Interview and Questionnaire method. Analysis of user feedback is done based on the fuzzy approach in order to remove vaguness. Whereas, AHP model is used for measuring satisfaction degree of the different cloud storage services and it solves the problem of selecting best cloud storage

A quantitative approach to evaluate usability of academic websites based on human perception

AbstractIn this competitive world, websites are considered to be a key aspect of any organization’s competitiveness. In addition to visual esthetics, usability of a website is a strong determinant for user’s satisfaction and pleasure. However, lack of appropriate techniques and attributes for measuring usability may constrain the usefulness of a website. To address this issue, we conduct a statistical study to evaluate the usability and accessibility levels of three popular academic websites based on human (user) perception. Two types of usability evaluation techniques were employed in this study. First one is Questionnaire-based evaluation and second one is performance-based evaluation. Usability assessment was performed by analyzing the results from the observed task success rates, task completion times, post-task satisfaction ratings and feedback. We also investigate the possibility of there being any impact of task completion times on participant’s satisfaction levels. The results of the questionnaire based evaluation were observed to be consistent with the results of performance-based evaluation. Accessibility evaluation was carried out by testing the degree of compliance of the web pages as per WCAG 2.0 guidelines

A Novel Test Case Design Technique Using Dynamic Slicing of UML Sequence Diagrams

We present a novel methodology for test case generation based on UML sequence diagrams. We create message dependence graphs (MDG) from UML sequence diagrams. Edge marking dynamic slicing method is applied on MDG to create slices. Based on the slice created with respect to each predicate on the sequence diagram, we generate test data. We formulate a test adequacy criterion named slice coverage criterion. Test cases that we generate achieves slice coverage criterion. Our approach achieves slice test coverage with few test cases. We generate effective test cases for cluster level testing