Performance analysis of Internet of Things sensor architectures and security primitives

The paper presents performance analysis of centralised and decentralised architecture of IoT sensor networks. Two most popular security mechanisms for Sensor Networks based on their energy consumption, which may lead to poor performance of the IoT system, are also evaluat-ed. The Internet of Things (IoT) technology aims to improve easy access to the information needed using devices. It has been adopted by many time sensitive systems like self-driving car, automated traffic control system and so on. However, more study requires to understand per-formance level of possible IoT architectures over others. This paper explains different IoT sen-sor network architectures and models decentralised Wireless Senor Networks (WSN) architec-ture. Simulation of these architectures and their popular security primitives are compared in terms of their performance. This study can be a great resource to develop an efficient IoT ar-chitecture and security framework with better performance

Synthesis of Polyphosphazenes by a Fast Perfluoroaryl Azide-Mediated Staudinger Reaction

We report the synthesis of polyphosphazenes by a fast Staudinger reaction between a bis-PFAA (perfluoroaryl azide) and a bis-phospine. Polymerization was completed within 30 min after mixing the two monomers (20 mM) in CH₃CN under ambient conditions to give polyphosphazene with molecular weight of up to over 59 000 and a narrow dispersity (<i>Đ</i>) of 1.1–1.2. This is a significant improvement over the polyphosphazenes obtained from the classic Staudinger reaction which had lower molecular weight (<i>M̅</i>_n = 10 000–25 000) and higher <i>Đ</i> (1.7). This reaction applies to bis-PFAAs and bis-phosphines with either an aromatic or an aliphatic linker. Polarity of the solvent influenced the degree of polymerization, and more polar solvents such as acetonitrile gave higher molecular weight polymer in comparison to less polar solvents such as dichloromethane. The synthesized polyphosphazenes showed high thermal stability, with the aromatic polyphosphazenes giving decomposition temperature and char yield of up to of 441 °C and 53%, respectively

Performance analysis of Internet of Things sensor architectures and security primitives

The paper presents performance analysis of centralised and decentralised architecture of IoT sensor networks. Two most popular security mechanisms for Sensor Networks based on their energy consumption, which may lead to poor performance of the IoT system, are also evaluat-ed. The Internet of Things (IoT) technology aims to improve easy access to the information needed using devices. It has been adopted by many time sensitive systems like self-driving car, automated traffic control system and so on. However, more study requires to understand per-formance level of possible IoT architectures over others. This paper explains different IoT sen-sor network architectures and models decentralised Wireless Senor Networks (WSN) architec-ture. Simulation of these architectures and their popular security primitives are compared in terms of their performance. This study can be a great resource to develop an efficient IoT ar-chitecture and security framework with better performance