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In this digitalised world where every information is stored, the data a are growing exponentially. It is estimated that data are doubles itself every two years. Geospatial data are one of the prime contributors to the big data scenario. There are numerous tools of the big data analytics. But not all the big data analytics tools are capabilities to handle geospatial big data. In the present paper, it has been discussed about the recent two popular open source geospatial big data analytical tools i.e. Spatial-Hadoop and GeoSpark which can be used for analysis and process the geospatial big data in efficient manner. It has compared the architectural view of SpatialHadoop and GeoSpark. Through the architectural comparison, it has also summarised the merits and demerits of these tools according the execution times and volume of the data which has been used.

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ABTRACTNowadays there is a brief usage and dependability of pulsating features of the smart devices. So there is a need of connecting these devices through internet to explore their functionality. In the world of Smart homes there exists different systems but failed to provide many functionalities like controlling the devices remotely, overhead in communication, and energy efficiency. This paper delivers the solution to the constraint of the existing systems. The monitoring and controlling of smart organized homes environmental and safety parameters a Wi-Fi based WSN system is designed. A lightweight MQTT protocol is used for interactions between devices and user. The user can flawlessly control and monitor the devices via Android Application using a Graphical User Interface (GUI) remotely.

ABTRACTEnergy is a serious resource parameter in Wireless Sensor Networks. Utilizing energy in an effectual manner is a challenging task in Wireless Sensor Networks. This paper presents an overview on various energy efficient routing protocols which fulfills the criteria of QoS parameters. Various energy effective and QoS based routing protocols have been compared. To improve the QoS in a network, data fusion and data accumulation is considered to be one of major energy saving technique. The routing protocols based on data aggregation, reduced cost routing and secure routing are also discussed in detail. Simulation tools like NS2, NS3, OMNET etc can be used to evaluate the network performance.

ABTRACT MANET is a kind of Adhoc network with mobile, and wireless nodes. Because of its distinct features like dynamic topology, hop-by-hop communications and easy and quick setup, MANETs encountered lots of challenges allegorically routing, security and clustering. The security challenges arise due to MANET's self configuration and self maintenance capabilities. In this paper, we present an elaborate view of issues in MANET security. Based on MANET's special characteristics, we define three security parameters for MANET. In addition we divided MANET security into two different aspects and discussed each one in detail. A comprehensive analysis in security aspects of MANET and routing approaches is presented. In addition, defeating approaches against attacks have been evaluated in some essential metrics. After analyses and evaluations, future scope of work has been presented.