Abstract-A big challenge in the urban cities is that of waste management as there is a rapid growth in the rate of urbanization and thus there is a need of sustainable urban development plans. As the concept of smart cities is very much trending these days and the smart cities cannot be complete without smart waste management system. There needs to be system that gives prior information of the filling of the bin that alerts the municipality so that they can clean the bin on time and safeguard the environment. To avoid all such situations we intend to propose a solution for this problem "Smart Garbage Bin", which will alarm and inform the authorized person when the garbage bin is about to fill. Then message will be send to the authorized person to collect the garbage from the particular area. The authorized person will sends the message from his web application to the garbage collectors by sending a SMS .This system maintain a dry waste and a wet waste separately. This will help to reduce the overflow of the garbage bin and thus keeping the environment clean.

In India Now a days Solid waste management is one of the primary problems that is faced irrespective of the case of developed or under development states. It is seen that most of the garages across the roadside are overloaded because the waste is not collected periodically. It creates unhygienic condition for the people and creates bad odour around the surroundings. Due to this it gives birth to some deadly diseases and causes human illness. Most of the time wet and dry wastes are not separately collected so that proper processing like composting, recycling, incineration cannot be applied to different kinds of waste. This system will help us in garbage management which will results in garbage processing .This systems consist of ultrasonic sensor, infrared sensor for detecting the level of waste, Arduino UNO, microcontroller, Raspberry Pi2 as controlling boards. This system is comprised of ultrasonic sensors to sense the level of garbage in the bin, flame sensor to detect the fire and moisture sensor to separate out wet and dry garbage. By using global system for mobile (GSM) the concerned persons shall be informed through SMS. The status of waste bins can be monitored and this data is transmitted and processed by fast Raspberry Pi3

Electronic voting (e-Voting) has totally replaced the traditional voting system. Due to the rapid growth of computer networks and cloud computing the existing e-Voting system can be replaced with online voting system.When data is on cloud,the major challenge in voting system is confidentiality, security and accuracy. The advances in cryptography can be used to a face these challenges.  The presented work implements Okamoto-Uchiyama algorithm with its additive homomorphic property. This work focuses on serving voting system on large scale of voters. We have made our system more user friendly and faster but secured than existing systems.