Configuration of software product line is often a more laborious process than anticipated before. One major difficulty with software product line engineering is unavailability of standardize configuration process model that reduces the adverse affects of configuration related issues and problems such as requirements conflicts of same/multiple stages, complexity of conflicts resolution, adhoc te...

In this paper, we study two approaches for tuning parameters of optimization algorithms: off-line and on-line tuning. The goal of tuning is to find an appropriate configuration of an algorithm, where a configuration is a specific setting of all parameters. In off-line tuning, the appropriate configuration is chosen after a preliminary phase. In on-line tuning, the configuration might be changed...

Digital holography (DH) is the direct recording of the Fresnel or Fourier holograms using a CCD or CMOS camera and is considered as an alternative to the optical holography which uses a film or a plate involving wet-chemical or other processes. However, the poor pixel resolution of CCD or CMOS cameras as compared to that of holographic films gives poor depth resolution for images which in turn ...

The stability of electrostatic drift waves in a closed field line configuration in collisionality regimes ranging from collisional to collisionless is compared. The maximum sustainable pressure gradient is found to be dependent on the ratio of the temperature and density gradients (h[d ln T/d ln n). The eigenmodes are seen to be flute-like. The stability boundary was found to be similar when bo...

In Product Line Engineering (PLE), product configuration describes the process of developing a product according to user requirements, by reuse from a Product Line model (PLM). The problem is that there are so many products in a PL that it is impossible to specify all of them explicitly. Then, when a user makes a decision (e.g. require or reject a reusable artifact), this can be contradictory w...