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Search Results: 1 - 10 of 281 matches for " Ritu Sibal "
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Applications of different metaheuristic techniques for finding optimal tst order during integration testing of object oriented systems and their comparative study
Chayanika Sharma,Ritu Sibal
Computer Science , 2014, DOI: 10.7321/jscse.v3n.12.1
Abstract: In recent past, a number of researchers have proposed genetic algorithm (GA) based strategies for finding optimal test order while minimizing the stub complexity during integration testing. Even though, metaheuristic algorithms have a wide variety of use in various medium to large size optimization problems [21], their application to solve the class integration test order (CITO) problem [12] has not been investigated. In this research paper, we propose to find a solution to CITO problem by the use of a GA based approach. We have proposed a class dependency graph (CDG) to model dependencies namely, association, aggregation, composition and inheritance between classes of unified modeling language (UML) class diagram. In our approach, weights are assigned to the edges connecting nodes of CDG and then these weights are used to model the cost of stubbing. Finally, we compare and discuss the empirical results of applying our approach with existing graph based and metaheuristic techniques to the CITO problem and highlight the relative merits and demerits of the various techniques.
Applying Genetic Algorithm for Prioritization of Test Case Scenarios Derived from UML Diagrams
Sangeeta Sabharwal,Ritu Sibal,Chayanika Sharma
International Journal of Computer Science Issues , 2011,
Abstract: Software testing involves identifying the test cases which discover errors in the program. However, exhaustive testing of software is very time consuming. In this paper, a technique is proposed to prioritize test case scenarios by identifying the critical path clusters using genetic algorithm. The test case scenarios are derived from the UML activity diagram and state chart diagram. The testing efficiency is optimized by applying the genetic algorithm on the test data. The information flow metric is adopted in this work for calculating the information flow complexity associated with each node of the activity diagram and state chart diagram. If the software requirements change, the software needs to be modified and this requires re - testing of the software. Hence, to take care of requirements change, a stack based approach for assigning weights to the nodes of activity diagram and state chart diagram has also been proposed. In this paper, we have extended our previous work of generating test case scenarios from activity diagram by also considering the concurrent activities in nested activity diagram.
Applying Genetic Algorithm for Prioritization of Test Case Scenarios Derived from UML Diagrams
Chayanika Sharma,Sangeeta Sabharwal,Ritu Sibal
Computer Science , 2014,
Abstract: Software testing involves identifying the test cases whichdiscover errors in the program. However, exhaustive testing ofsoftware is very time consuming. In this paper, a technique isproposed to prioritize test case scenarios by identifying the critical path clusters using genetic algorithm. The test case scenarios are derived from the UML activity diagram and state chart diagram. The testing efficiency is optimized by applying the genetic algorithm on the test data. The information flow metric is adopted in this work for calculating the information flow complexity associated with each node of the activity diagram and state chart diagram.
A Survey on Software Testing Techniques using Genetic Algorithm
Chayanika Sharma,Sangeeta Sabharwal,Ritu Sibal
Computer Science , 2014,
Abstract: The overall aim of the software industry is to ensure delivery of high quality software to the end user. To ensure high quality software, it is required to test software. Testing ensures that software meets user specifications and requirements. However, the field of software testing has a number of underlying issues like effective generation of test cases, prioritisation of test cases etc which need to be tackled. These issues demand on effort, time and cost of the testing. Different techniques and methodologies have been proposed for taking care of these issues. Use of evolutionary algorithms for automatic test generation has been an area of interest for many researchers. Genetic Algorithm (GA) is one such form of evolutionary algorithms. In this research paper, we present a survey of GA approach for addressing the various issues encountered during software testing.
A Survey on Software Testing Techniques using Genetic Algorithm
Chayanika Sharma,Proffesoor. Sangeeta Sabharwal,Asst. Professor Ritu Sibal
International Journal of Computer Science Issues , 2013,
Abstract: The overall aim of the software industry is to ensure delivery of high quality software to the end user. To ensure high quality software, it is required to test software. Testing ensures that software meets user specifications and requirements. However, the field of software testing has a number of underlying issues like effective generation of test cases, prioritisation of test cases etc which need to be tackled. These issues demand on effort, time and cost of the testing. Different techniques and methodologies have been proposed for taking care of these issues. Use of evolutionary algorithms for automatic test generation has been an area of interest for many researchers. Genetic Algorithm (GA) is one such form of evolutionary algorithms. In this research paper, we present a survey of GA approach for addressing the various issues encountered during software testing
After Marcos: The Scenario of Reality
Danilo F. Sibal
Kasarinlan : Philippine Journal of Third World Studies , 1986,
Abstract: Review of the book The Philippines after Marcos edited by R.J. May and Francisco Nemenzo.
Looking Back on a Life and History
Danilo F. Sibal
Kasarinlan : Philippine Journal of Third World Studies , 1985,
Abstract: Review of the book The Making of a Subversive: A Memoir by Hernando J. Abaya.
Compression of MR Images Using DWT by Comparing RGB and YCbCr Color Spaces  [PDF]
Agrawal Jayprkash, Ritu Vijay
Journal of Signal and Information Processing (JSIP) , 2013, DOI: 10.4236/jsip.2013.44046
Abstract: This paper consists of a lossy image compression algorithm dedicated to the medical images doing comparison of RGB and YCbCr color space. Several lossy/lossless transform coding techniques are used for medical image compression. Discrete Wavelet Transform (DWT) is one such widely used technique. After a preprocessing step (remove the mean and RGB to YCbCr transformation), the DWT is applied and followed by the bisection method including thresholding, the quantization, dequantization, the Inverse Discrete Wavelet Transform (IDWT), YCbCr to RGB transform of mean recovering. To obtain the best compression ratio (CR), the next step encoding algorithm is used for compressing the input medical image into three matrices and forward to DWT block a corresponding containing the maximum possible of run of zeros at its end. The last step decoding algorithm is used to decompress the image using IDWT that is applied to get three matrices of medical image.
An Unusual Cause of Hepatic Portal Venous Gas  [PDF]
Nizar Talaat, Ritu Gupta
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.35061
Abstract:

A 27-years-old female with history of venous thromboembolism secondary to Lupus anticoagulant presented with sudden onset of chest pain and dyspnea. A CT angiogram of the chest showed superior vena caval (SVC) obstruction with anterior chest wall venous collaterals and hepatic portal vein gas (HPVG), which resolved without intervention on a repeated CT-scan of the abdomen. Previously, HPVG was considered to be a dangerous radiologic sign, however with the advancement in imaging technology more benign causes are being identified. This case highlights that this finding alone, if found, does not indicate aggressive management and that clinical correlation should be considered if found.

On Propagation of Rayleigh Type Surface Wave in a Micropolar Piezoelectric Medium  [PDF]
Baljeet Singh, Ritu Sindhu
Open Journal of Acoustics (OJA) , 2016, DOI: 10.4236/oja.2016.64004
Abstract: In the present paper, the governing equations of a linear transversely isotropic micropolar piezoelectric medium are specialized for x-z plane after using symmetry relations in constitutive coefficients. These equations are solved for the general surface wave solutions in the medium. Following radiation conditions in the half-space, the particular solutions are obtained, which satisfy the appropriate boundary conditions at the stress-free surface of the half-space. A secular equation for Rayleigh type surface wave is obtained. An iteration method is applied to compute the non-dimensional wave speed of the Rayleigh surface wave for specific material parameters. The effects of piezoelectricity, non-dimensional frequency and non-dimensional material constant, charge free surface and electrically shorted surface are shown graphically on the wave speed of Rayleigh wave.
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