Several branches of the potential outcome causal inference literature have discussed merits blocking versus complete randomization. Some concluded it can never hurt precision estimates, and some hurt. In this paper, we reconcile these apparently conflicting views, give a more thorough discussion what guarantees no harm, discuss how other aspects blocked design cost, all in terms precision. We d...

In this progress period technicians and companies very often need to simulate some events such as people walking or moving some objects from one place to another. This contribution is focused on one kind of virtual reality (VR) MOCAP (Motion Capture) and on the creation of graphical scripts for the animation of models. VR is used also in the process of workplace design. Firstly, the workplace i...

In this paper, a type-2 fuzzy rule based expert system is developed for stock price analysis. Interval type-2 fuzzy logic system permits us to model rule uncertainties and every membership value of an element is interval itself. The proposed type-2 fuzzy model applies the technical and fundamental indexes as the input variables. This model is tested on stock price prediction of an automotive ma...

Software development is still based on manufactory production, and most of the programming code is still hand-crafted. Software development is very far away from the ultimate goal of industrialization in software production, something which has been achieved long time ago in the other industries. The lack of software industrialization creates an inability to cope with fast and frequent changes ...

In the manufacturing industry, many product characteristics are of one-sided tolerances. The process capability indices C p (u, v) and C l p(u, v) can be used to measure process performance. Most research work related to capability indices assumes no gauge measurement errors. This assumption insufficiently reflects real situations even when advanced measuring instruments are used. In this paper...

purpose: The purpose of this study was to determine the effectiveness of teaching positive thinking skills on decreasing depression among female students of the Sabzevar University of Sabzevar. Methodology: The study population consisted of all female students of Azad University of Sabzevar Branch in the academic year of 97-96, including 30 people who were selected using purposeful sampling. T...