Plastic products have gained universal uses not only in food, clothing and shelter, but also in the transportation, construction, medical and leisure industries. There is a growing demand for biobased and biodegradable polymers as a solution to problems concerning the energy resources, the global environment and the solid waste management. Research on biobased and biodegradable plastics and polymers has been carried out worldwide with the aim of achieving a balance between human activities and the natural environments.

Wireless networks are progressively becoming more affordable, due to its vulnerability to Jamming (DOS attack) which disrupt the operation of broadcasting system, this paper aims to implement NS-2 simulator by adding new layer named "Multi-Radio Layer" to support multi-radio multichannel in order to increase network capacity and implement jamming defender model to improve the resiliency of multi-radio networks against jamming attack using channel hopping and error correcting code (ECC), also construct reactive jammer model to achieve the risk of jamming attack on wireless networks. The paper investigates the performance of our simulation model and verifies the mathematical model introduced by [1]. The results showed by this paper are similar to that mathematical model.

This paper introduces ATPMAT which is an open source Matlab-based toolbox to automate many tasks done in ATP faced by researchers and engineers. The toolbox provides a rich set of M-files that is GPL based to change ATP files and run ATP from within Matlab without interacting with ATP or ATPDraw. The toolbox provides a systematic way not only to change one ATP file but to batch process ATP files to create a batch of faults, line switching or lightning strike cases for any line. The heart of the toolbox is a data translator that interprets the contents of the ATP file and inserts appropriate lines of code to accommodate changes requested by the user. The toolbox then commits changes to ATP file according to user input and then run ATP from within Matlab. The output of the toolbox is a set of mat files each of which contains the voltages and currents from both ends of the line under study. The mat files are saved in a folder specified by the user.