Subramanian Sumathy

Bio: Subramanian Sumathy is an academic researcher from VIT University. The author has contributed to research in topics: Lean burn & Spark-ignition engine. The author has an hindex of 2, co-authored 3 publications receiving 6 citations.

Dispersed dummy selection approach for location‐based services to preempt user‐profiling

Abstract: Location‐based services (LBS) provide specific personalized services based on the location information provided by the user. Disclosing the users' private data is a challenging issue prevailing in LBS. Users become victims of online user‐profile disclosure risks when they continuously utilize the services and attempt to disclose private data. The proposed dispersed dummy selection‐based approaches such as dispersed dummy selection including actual location (DDSIA) and dispersed dummy selection excluding actual location (DDSEA) avert user‐profiling issue. The dummy locations are chosen based on the auxiliary information of the location, user, and physical dispersion. The auxiliary information about the location is fetched from the local fog servers, and auxiliary information about the user is stored and retrieved from the cloud storage. An anonymous circular area is considered to ensure the dummy locations are dispersed, and the user‐location correlations get dissipated. The detailed analysis of the proposed approaches is explored with the real‐world map data, and its effectiveness is verified with simulations using Matlab. In addition, the qualitative analysis tests the resistance of the dummies against human observations. The results obtained substantiate that the proposed approaches are efficient in terms of dispersion degree and resistance to human observations that avert user profiling.

An Overview of the Classification, Production and Utilization of Biofuels for Internal Combustion Engine Applications

Abstract: Biofuel, a cost-effective, safe, and environmentally benign fuel produced from renewable sources, has been accepted as a sustainable replacement and a panacea for the damaging effects of the exploration for and consumption of fossil-based fuels. The current work examines the classification, generation, and utilization of biofuels, particularly in internal combustion engine (ICE) applications. Biofuels are classified according to their physical state, technology maturity, the generation of feedstock, and the generation of products. The methods of production and the advantages of the application of biogas, bioalcohol, and hydrogen in spark ignition engines, as well as biodiesel, Fischer–Tropsch fuel, and dimethyl ether in compression ignition engines, in terms of engine performance and emission are highlighted. The generation of biofuels from waste helps in waste minimization, proper waste disposal, and sanitation. The utilization of biofuels in ICEs improves engine performance and mitigates the emission of poisonous gases. There is a need for appropriate policy frameworks to promote commercial production and seamless deployment of these biofuels for transportation applications with a view to guaranteeing energy security.

Lubrication, emissions, and performance analyses of LPG and petrol in a motorbike engine: a comparative study

Abstract: The increased level of air pollution has caused the automobile industry to investigate alternate greener fuels to make vehicles more environmentally friendly. This study focuses on the perf...