Varun Gupta - Academia.edu (original) (raw)
Papers by Varun Gupta
International Journal of Software Engineering and Its Applications, 2013
ABSTRACT
International Journal of Systems and Service-Oriented Engineering, 2012
2011 Annual IEEE India Conference, 2011
... "Test Case Prioritization Based on Requirements and Risk Factors." ACM SIGSOFT Soft... more ... "Test Case Prioritization Based on Requirements and Risk Factors." ACM SIGSOFT Software Engineering Notes 33(4): 1-5. [9]. R. Malhotra, A. Kaur, Y. Singh (2010). A Hybrid Approach for Regression Testing in Interprocedural Programs. ... [10]. Varun Gupta, M. Srivastav. (2011). ...
Procedia Engineering, 2012
International Journal of Computer Aided Engineering and Technology, 2014
ABSTRACT
International Journal of Computer Aided Engineering and Technology, 2014
ABSTRACT
Environmental Science & Technology, 2013
Biotechnology and Bioengineering, 2008
Pseudomonas fluorescens cultures produce fluorescent siderophores. By utilizing optimal condition... more Pseudomonas fluorescens cultures produce fluorescent siderophores. By utilizing optimal conditions for maximizing siderophore production in shake flask cultures of P. fluorescens, we report successful characterization of the culture broth supernatant as a robust ferric ions biosensor. For characterizing the ferric ions biosensor, we tested the effects of pH, buffers, different ferric salts and possible interference by ferrous ions under different solution conditions. We find that the biosensor is very specific to ferric ions only with sensitivity to concentrations as low as 10 microM. Further, the response time of the biosensor is the shortest (approximately 5 min or smaller) for citrate as the accompanying anion with ferric ions. While the response time is longer than that expected of normal biosensors, it is well compensated by the simplicity and economics of the biosensor production. Extremely low standard deviations in several experimental repeats also highlight the robustness of the ferric ions biosensor. Most importantly, the biosensor is extremely easy to use due to its straightforward spectrophotometric applications. We also show the utility of the biosensor with the high resolution technique of fluorescence microscopy. Finally, we report a novel mechanistic finding that siderophores present in the culture broth supernatants have two distinct optically active sites on them, which can be monitored independently in presence or absence of ferric ions.
The Journal of Chemical Physics, 2011
The electronic spectrum of a cold molecular beam of zirconium dioxide, ZrO(2), has been investiga... more The electronic spectrum of a cold molecular beam of zirconium dioxide, ZrO(2), has been investigated using laser induced fluorescence (LIF) in the region from 17,000 cm(-1) to 18,800 cm(-1) and by mass-resolved resonance enhanced multi-photon ionization (REMPI) spectroscopy from 17,000 cm(-1)-21,000 cm(-1). The LIF and REMPI spectra are assigned to progressions in the Ã(1)B(2)(ν(1), ν(2), ν(3)) ← X̃(1)A(1)(0, 0, 0) transitions. Dispersed fluorescence from 13 bands was recorded and analyzed to produce harmonic vibrational parameters for the X̃(1)A(1) state of ω(1) = 898(1) cm(-1), ω(2) = 287(2) cm(-1), and ω(3) = 808(3) cm(-1). The observed transition frequencies of 45 bands in the LIF and REMPI spectra produce origin and harmonic vibrational parameters for the Ã(1)B(2) state of T(e) = 16,307(8) cm(-1), ω(1) = 819(3) cm(-1), ω(2) = 149(3) cm(-1), and ω(3) = 518(4) cm(-1). The spectra were modeled using a normal coordinate analysis and Franck-Condon factor predictions. The structures, harmonic vibrational frequencies, and the potential energies as a function of bending angle for the Ã(1)B(2) and X̃(1)A(1) states are predicted using time-dependent density functional theory, complete active space self-consistent field, and related first-principle calculations. A comparison with isovalent TiO(2) is made.
ACM SIGSOFT Software Engineering Notes, 2011
Abstract Dynamic coupling metrics for object-oriented software provide scope of coupling measurem... more Abstract Dynamic coupling metrics for object-oriented software provide scope of coupling measurement up to the object level and take into account important and widely used object-oriented features such as inheritance, polymorphism and dynamic binding during ...
Communications in Computer and Information Science, 2009
Abstract. The comprehension of a program is largely dependent on the spatial abilities of the pro... more Abstract. The comprehension of a program is largely dependent on the spatial abilities of the programmers. Some spatial complexity measures have been pro-posed in the literature to estimate the effort required in the process of software comprehension. Two of the widely discussed ...
ACM SIGSOFT Software Engineering Notes, 2009
Abstract Spatial complexity measures help in the estimation of the effort re-quired in the proces... more Abstract Spatial complexity measures help in the estimation of the effort re-quired in the process of program comprehension. These spatial com-plexity measures have been proposed for procedure-oriented software as well as object-oriented software. In this paper, an at- ...
2006 International Conference on Advanced Computing and Communications, 2006
Abstract The software comprehension is an important activity that influences a variety of softwar... more Abstract The software comprehension is an important activity that influences a variety of software engineering tasks. Software comprehension is required when a software engineer maintains, reuses, and reengineers software systems. In order to understand a program, ...
Communications in Computer and Information Science, 2010
Abstract. Indian Tribal Medicinal Documents date back to around 1920's and has not been ... more Abstract. Indian Tribal Medicinal Documents date back to around 1920's and has not been explored much before. This paper attempts to structure these documents by extracting their ontology semi automatically and help in their an-notations with the ontological concepts. It outlines our ...
Journal of Computer Science and Technology, 2009
The grouping of correlated classes into a package helps in better organization of modern object-o... more The grouping of correlated classes into a package helps in better organization of modern object-oriented software. The quality of such packages needs to be measured so as to estimate their utilization. In this paper, new package coupling metrics are proposed, which also take into consideration the hierarchical structure of packages and direction of connections among package elements. The proposed measures have been validated theoretically as well as empirically using 18 packages taken from two open source software systems. The results obtained from this study show strong correlation between package coupling and understandability of the package which suggests that proposed metrics could be further used to represent other external software quality factors.
Journal of Systems Architecture, 2011
Journal of Computer Science and Technology, 2009
Journal of Computer Science and Technology, 2010
Abstract Software metrics help us to make meaningful estimates for software products and guide us... more Abstract Software metrics help us to make meaningful estimates for software products and guide us in taking managerial and technical decisions. However, conventional static metrics have been found to be inadequate for modern object-oriented software due to the presence of object-...
Plastic and Reconstructive Surgery, 2014
International Journal of Software Engineering and Its Applications, 2013
ABSTRACT
International Journal of Systems and Service-Oriented Engineering, 2012
2011 Annual IEEE India Conference, 2011
... "Test Case Prioritization Based on Requirements and Risk Factors." ACM SIGSOFT Soft... more ... "Test Case Prioritization Based on Requirements and Risk Factors." ACM SIGSOFT Software Engineering Notes 33(4): 1-5. [9]. R. Malhotra, A. Kaur, Y. Singh (2010). A Hybrid Approach for Regression Testing in Interprocedural Programs. ... [10]. Varun Gupta, M. Srivastav. (2011). ...
Procedia Engineering, 2012
International Journal of Computer Aided Engineering and Technology, 2014
ABSTRACT
International Journal of Computer Aided Engineering and Technology, 2014
ABSTRACT
Environmental Science & Technology, 2013
Biotechnology and Bioengineering, 2008
Pseudomonas fluorescens cultures produce fluorescent siderophores. By utilizing optimal condition... more Pseudomonas fluorescens cultures produce fluorescent siderophores. By utilizing optimal conditions for maximizing siderophore production in shake flask cultures of P. fluorescens, we report successful characterization of the culture broth supernatant as a robust ferric ions biosensor. For characterizing the ferric ions biosensor, we tested the effects of pH, buffers, different ferric salts and possible interference by ferrous ions under different solution conditions. We find that the biosensor is very specific to ferric ions only with sensitivity to concentrations as low as 10 microM. Further, the response time of the biosensor is the shortest (approximately 5 min or smaller) for citrate as the accompanying anion with ferric ions. While the response time is longer than that expected of normal biosensors, it is well compensated by the simplicity and economics of the biosensor production. Extremely low standard deviations in several experimental repeats also highlight the robustness of the ferric ions biosensor. Most importantly, the biosensor is extremely easy to use due to its straightforward spectrophotometric applications. We also show the utility of the biosensor with the high resolution technique of fluorescence microscopy. Finally, we report a novel mechanistic finding that siderophores present in the culture broth supernatants have two distinct optically active sites on them, which can be monitored independently in presence or absence of ferric ions.
The Journal of Chemical Physics, 2011
The electronic spectrum of a cold molecular beam of zirconium dioxide, ZrO(2), has been investiga... more The electronic spectrum of a cold molecular beam of zirconium dioxide, ZrO(2), has been investigated using laser induced fluorescence (LIF) in the region from 17,000 cm(-1) to 18,800 cm(-1) and by mass-resolved resonance enhanced multi-photon ionization (REMPI) spectroscopy from 17,000 cm(-1)-21,000 cm(-1). The LIF and REMPI spectra are assigned to progressions in the Ã(1)B(2)(ν(1), ν(2), ν(3)) ← X̃(1)A(1)(0, 0, 0) transitions. Dispersed fluorescence from 13 bands was recorded and analyzed to produce harmonic vibrational parameters for the X̃(1)A(1) state of ω(1) = 898(1) cm(-1), ω(2) = 287(2) cm(-1), and ω(3) = 808(3) cm(-1). The observed transition frequencies of 45 bands in the LIF and REMPI spectra produce origin and harmonic vibrational parameters for the Ã(1)B(2) state of T(e) = 16,307(8) cm(-1), ω(1) = 819(3) cm(-1), ω(2) = 149(3) cm(-1), and ω(3) = 518(4) cm(-1). The spectra were modeled using a normal coordinate analysis and Franck-Condon factor predictions. The structures, harmonic vibrational frequencies, and the potential energies as a function of bending angle for the Ã(1)B(2) and X̃(1)A(1) states are predicted using time-dependent density functional theory, complete active space self-consistent field, and related first-principle calculations. A comparison with isovalent TiO(2) is made.
ACM SIGSOFT Software Engineering Notes, 2011
Abstract Dynamic coupling metrics for object-oriented software provide scope of coupling measurem... more Abstract Dynamic coupling metrics for object-oriented software provide scope of coupling measurement up to the object level and take into account important and widely used object-oriented features such as inheritance, polymorphism and dynamic binding during ...
Communications in Computer and Information Science, 2009
Abstract. The comprehension of a program is largely dependent on the spatial abilities of the pro... more Abstract. The comprehension of a program is largely dependent on the spatial abilities of the programmers. Some spatial complexity measures have been pro-posed in the literature to estimate the effort required in the process of software comprehension. Two of the widely discussed ...
ACM SIGSOFT Software Engineering Notes, 2009
Abstract Spatial complexity measures help in the estimation of the effort re-quired in the proces... more Abstract Spatial complexity measures help in the estimation of the effort re-quired in the process of program comprehension. These spatial com-plexity measures have been proposed for procedure-oriented software as well as object-oriented software. In this paper, an at- ...
2006 International Conference on Advanced Computing and Communications, 2006
Abstract The software comprehension is an important activity that influences a variety of softwar... more Abstract The software comprehension is an important activity that influences a variety of software engineering tasks. Software comprehension is required when a software engineer maintains, reuses, and reengineers software systems. In order to understand a program, ...
Communications in Computer and Information Science, 2010
Abstract. Indian Tribal Medicinal Documents date back to around 1920's and has not been ... more Abstract. Indian Tribal Medicinal Documents date back to around 1920's and has not been explored much before. This paper attempts to structure these documents by extracting their ontology semi automatically and help in their an-notations with the ontological concepts. It outlines our ...
Journal of Computer Science and Technology, 2009
The grouping of correlated classes into a package helps in better organization of modern object-o... more The grouping of correlated classes into a package helps in better organization of modern object-oriented software. The quality of such packages needs to be measured so as to estimate their utilization. In this paper, new package coupling metrics are proposed, which also take into consideration the hierarchical structure of packages and direction of connections among package elements. The proposed measures have been validated theoretically as well as empirically using 18 packages taken from two open source software systems. The results obtained from this study show strong correlation between package coupling and understandability of the package which suggests that proposed metrics could be further used to represent other external software quality factors.
Journal of Systems Architecture, 2011
Journal of Computer Science and Technology, 2009
Journal of Computer Science and Technology, 2010
Abstract Software metrics help us to make meaningful estimates for software products and guide us... more Abstract Software metrics help us to make meaningful estimates for software products and guide us in taking managerial and technical decisions. However, conventional static metrics have been found to be inadequate for modern object-oriented software due to the presence of object-...
Plastic and Reconstructive Surgery, 2014