No abstract

No abstract

<p>This paper aims to present the details regarding telecommunication network security through cryptology protocols. The data was based on scientific data collection and the quantitative method was adopted. The questionnaire was developed and the primary respondents were approached who were working in 4 telecommunication networking companies namely Huawei, Ericsson, SK Telecom and Telefonica. The sample size of the research was 60 participants and the statistical analysis was used to analyze research. The finding shows that cryptology protocol such as SSH, SSL, Kerberos PGP and SET are implemented within the companies in order to secure network.</p>

An enhanced design for a GaN/AlGaN HFET is proposed in this study, the proposed design is the multi-layered metal stack design of a HFET using the metals and thicknesses of Ti (250Å)-Al (750Å)-Ti (100Å)-Al (750Å)-Ti (100Å)-Au (250Å). This novel design has been proposed before and is an enhancement of the traditional Ti-Al-Ti-Au. The aim of the prosed design was to obtain better ohmic contact performance with the Ti-Al and multi-layering being the difference between the two. The two HFETs are expected to perform differently with the proposed design showing better ohmic metalization, consistent with past results and which have been proven using MATLAB simulation of its performance. The Ti-Al multi-layer metal stack returned a resistance value of 3.23 Ωmm while the traditional model had values of 3.40 Ωmm. The proposed Ti-Al multi-layer model also had better performance in terms of current densities with a value of 0.12 AmmG 1 compared to the traditional design that had 0.08 AmmG 1 . Al mole fraction was observed to have a direct effect on leakage performance, leakage being an important performance factor. The MATLAB results showed convergence, falling within the 1×10G 10 and 1×10G 6 . The results were also comparable to those from past research.