Research Interests:
Pulsed laser generated Fe plasma plumes have been studied near the target surface using time-resolved imaging. A fast gated intensified CCD camera is used to capture the images with a gate width of 2 ns. The plasma plumes were generated... more
Pulsed laser generated Fe plasma plumes have been studied near the target surface using time-resolved imaging. A fast gated intensified CCD camera is used to capture the images with a gate width of 2 ns. The plasma plumes were generated using a Q-switched Nd-YAG laser at 1064 nm with a fluence of ˜2 kJ/cm2. The expansion studies were done up to a distance of about 5 mm from the target surface. The snow plow and the shock wave models were fitted to the experimental data to estimate the ablation parameters and to study plasma expansion dynamics (i.e. velocity and kinetic temperature) at Ar ambient gas pressure of 1 mbar. The high magnification near-target imaging results showed that the axial plume expansion velocity is about ˜106 ms-1. A strong shock is also captured near the target at few tens of nano-seconds, which was not observable with moderate magnification.
Research Interests:
Research Interests:
ABSTRACT In an investigating study to trace the productivity changes of a commercial software project, which uses incremental and iterative development model, we've found evidence that attributes such as staffing stability,... more
ABSTRACT In an investigating study to trace the productivity changes of a commercial software project, which uses incremental and iterative development model, we've found evidence that attributes such as staffing stability, design compatibility/ adaptability to incremental and iterative development, and integration and testing would have significant impact on modifying the productivity outcome - either positive or negative. In this report, we will present an empirical analysis to review, evaluate, and discuss these influential attributes in regard of their correlations with productivity in incremental and iterative software development. We also hope that our approach and results would contribute to initiate more research in this subject area.
ABSTRACT For a software project to succeed, acceptable quality must be achieved within an acceptable cost, providing business value to the customers, and keeping delivery time short. Software testing is a strenuous and expensive process... more
ABSTRACT For a software project to succeed, acceptable quality must be achieved within an acceptable cost, providing business value to the customers, and keeping delivery time short. Software testing is a strenuous and expensive process and is often not organized to maximize business value. In this article, we propose a practical value based software testing method which aligns the internal test process with the value objectives coming from the customers and the market. Our case study in a real-life business project shows that this method helps manage testing process effectively and efficiently.
... There are several sets of standards that are either published or still under development. The first published set is ISO 27001 standards, which discusses the specification for Information Security Management System, or ISMS. ...
General software cost parameters such as size, effort distribution, and productivity are necessarily imprecise due to variations by domain. To improve this situation, empirical software cost analysis using the primary US DoD cost database... more
General software cost parameters such as size, effort distribution, and productivity are necessarily imprecise due to variations by domain. To improve this situation, empirical software cost analysis using the primary US DoD cost database has been segmented by domain. This analysis supports a software cost estimation metrics manual for improvements in acquisition policies, procedures and tools. We have addressed the