For Authors                                          ISSN(e) : 2278-4721           ISSN(p):2319-6483

Information and communication technologies (ICT) have affected all area in a society. Human can learn quickly and accurately from the internet. The aim of this study was to investigate what the problematic internet usage of ICT teachers. Therefore, the present study investigated the problematic internet usage, who worked as an ICT teacher in secondary schools in Turkey. The data collection tools of the study are "Personal Information Form" designed by the researcher, and Problematic Internet Usage Scale. Descriptive statistics, t-test, ANOVA and Pearson correlation test were used for the statistical analysis of the data. The sample group of this study comprised of 119 ICT teachers. At the end of the research, it was found that male ICT teachers received higher scores in problematic internet usage scale when compared to the female ICT teachers.
Participants who had been serving as an ICT teacher for six years and more received higher scores in problematic internet usage level when compared to the other groups.

KEY WORD: ICT teachers, internet, problematic internet usage

Deep drawing is one of the important sheet forming process used to make cup shaped components. In sheet metal forming, it is essential that the formed components are to be free from any defects such as undesired thinning, fracture, wrinkles or shape distortion etc. The die tryouts to achieve the defect free components will result in high cost of tooling and set up. Now a days numerical simulation is widely used to eliminate the costly trails. The accuracy of such simulations depends on the input parameters of the simulation. In this work, a parametric study was carriedout for the selection of appropriate input parameters for the finite element simulation such as material model, number of integration points and type of element that could ultimately lead to a reduction in lead time in the design of deep drawing process. The material considered for the study was Super duplex stainless steel sheet of grade (S32750). A commercially available finite element code Dynaform/Lsdyna was used in the simulation. The punch stem diameter, depth of drawing and the blank diameter were selected according to the benchmark specification given in Numisheet'2002.The results of experimentation and simulation were compared for the validity of simulation approach.

KEY WORD: Deep drawing, Dynaform, Finite element Simulation, Super duplex stainless steel

Scientific computation aims to analyze and predict natural and engineered phenomena for human understanding. Specific quantification of physical variables requires annotations of physical units, either basic or derived. State-of-the-art computation uses the object-oriented programming (OOP) features using a number of processing cores. In translating scientific governing equations to computer programming, developers are still responsible to use and convert physical units to provide meaningful results. In this paper, we indicate some incoherency of SI units and propose possible ways to minimize unintended numerical errors. We use standard Fortran 90 as a programming language and discuss how physical units can be specified and checked during code compilations and executions.

KEY WORD: ............