Refactoring is a technique to make a computer program more readable and maintainable. A bad smell is an indication of some setback in the code, which requires refactoring to deal with. Many tools are available for detection and removal of these code smells. These tools vary greatly in detection methodologies and acquire different competencies. In this work, we studied different code smell detection tools minutely and try to comprehend our analysis by forming a comparative of their features and working scenario. We also extracted some suggestions on the bases of variations found in the results of both detection tools.

Requirements validation makes sure that the requirements written in software requirements specification (SRS) must be complete and consistent and are according to the customer's needs. It ensures the validity of user requirements by eliminating ambiguities and inconsistencies from SRS. Several techniques for requirements validation have been discussed in the literature. This paper gives an overview of requirements validation techniques which have been practicing in industry, which includes requirements inspections, requirements prototyping, requirements testing and viewpoint-oriented requirements validation. This paper also highlights pros and cons of these techniques. In requirements testing, special attention is given to TCD inspections.

There are several tools available for code clones detection and removal. Over the last few years much research has been done on assessment of these tools. Every tool has its efficiencies and deficiencies which researchers tried to evaluate. But the imperative point that we observed while analyzing these assessments is that there is no benchmark defined in this context so far. There is no clear picture that depicts which tool is better than the other and why? This paper is a contribution in this scaffold. Two clone detection tools SolidSDD and CCFinderX are evaluated and a comparison of these two is on hand here. Some experiments are performed on an open source software i.e. VLC media player, and it is revealed how different clone detection tools provide different results when study the same system. Reasons for these variations in results are endeavor to find out at this juncture.