Noman Islam

A review of wireless sensors and networks' applications in agriculture

Due to advancement in technologies and reduction in size, sensors are becoming involved in almost every field of life. Agriculture is one of such domains where sensors and their networks are successfully used to get numerous benefits. Selection of sensors and their effective utilization to solve agricultural domain problems has been an arduous task for novice users due to unavailability of conglomerated information in literature. The aim of this paper is to review the need of wireless sensors in Agriculture, WSN technology and their applications in different aspects of agriculture and to report existing system frameworks in agriculture domain.

Security Issues in Mobile Ad Hoc Network

Mobile Ad hoc Networks (MANET) are infrastructure-less networks characterized by lack of prior configuration and the hostile environments. Their unique properties make them a natural candidate for situations where unplanned network establishment is required. However this flexibility leads to a number of security challenges. Security in MANET is a very complex job and requires considerations on the issues spanning across all the layers of communication stack. This chapter reviews the security problem in MANET. It provides an updated account of the security solutions for MANET with detailed discussions on secure routing, intrusion detection system and key management problems. The chapter is concluded with a comprehensive security solution for MANET.

Semantic Web: Choosing the right methodologies, tools and standards

Semantic Web is a succession of the current world wide web in which all the contents, resources and services over the web will have well-defined meanings. Due to this well-defined semantics, semantic web will enable the automated processing of web contents by machines. To achieve this vision; a number of methodologies, tools and standards for semantic web have been proposed during last few years. In this paper, a critical review of these constituents of semantic web has been presented. In particular, a comparative analysis of ontology languages, ontology tools, ontology development methodologies and semantic web services is done. In addition, some missing research areas have also been also highlighted in which further research work should be carried out.

FIPA and MASIF standards: a comparative study and strategies for integration

Software Agents are autonomous piece of code that acts on behalf of its user to achieve the goals of the user. They are considered as one of the most vital components of semantic web. To facilitate the development of software agents for real world applications, a number of frameworks have been proposed. Over the years, we have seen the emergence of two agents development standards i.e. FIPA and MASIF. These standards provide specifications and guidelines to developers of frameworks in constructing any agent framework. In this paper, we have provided a comparative study of existing agent standards i.e. FIPA and MASIF. We have highlighted their missing features and provided guidelines on how any agent developer can incorporate these missing features in building agent applications. Based on our study, we have concluded that these two standards are complementary to each other. We have also discussed the integration strategies that have been proposed in literature to combine these two standards.

Service discovery in Mobile Ad hoc networks using Association Rules Mining

Service Discovery in Mobile Ad hoc Networks (MANET) is a difficult task because of the dynamic nature of such networks. The availability of the services in MANET varies with respect to time and location. However, the service discovery requests issued by a consumer in one session are correlated, in most of the cases. If we can find out the correlation among the services and piggyback one service response with others in advance, we can gain improvement in performance. By utilizing this correlation property among service discovery requests, we have proposed a novel approach to Service Discovery in Mobile Ad hoc Networks. We have simulated the proposed approach in JIST/SWANS simulator and the results have shown significant performance improvement.

A survey of data management issues & frameworks for mobile ad hoc networks

Data Management is the execution of a pool of activities on a set of data to conform to the end user data requisitions. MANET is an emerging discipline of computer networks in which a group of roaming hosts spontaneously establishes the network among themselves. The employment of data management in MANET can engender a number of useful applications. However, data management in MANET is a taxing job as it requires deliberation on a number of research issues (e.g. knowledge representation, knowledge discovery, caching, and security etc.). This paper provides a detailed account of the data management problem and its issues, which is lacking in current literature. Along with highlighting the current solutions available for various issues of data management, it also presents a comparative analysis of existing data management frameworks and also points out future research directions

HANDY: a hybrid association rules mining approach for network layer discovery of services for mobile ad hoc network

Mobile ad hoc network (MANET) is an infrastructure-less network formed between a set of mobile nodes. The discovery of services in MANET is a challenging job due to the unique properties of network. In this paper, a novel service discovery framework called hybrid association rules based network layer discovery of services for ad hoc networks (HANDY) has been proposed. HANDY provides three major research contributions. At first, it adopts a cross-layer optimized design for discovery of services that is based on simultaneous discovery of services and corresponding routes. Secondly, it provides a multi-level ontology-based approach to describe the services. This resolves the issue of semantic interoperability among the service consumers in a scalable fashion. Finally, to further optimize the performance of the discovery process, HANDY recommends exploiting the inherent associations present among the services. These associations are used in two ways. First, periodic service advertisements are performed based on these associations. In addition, when a response of a service discovery request is generated, correlated services are also attached with the response. The proposed service discovery scheme has been implemented in JIST/SWANS simulator. The results demonstrate that the proposed modifications give rise to improvement in hit ratio of the service consumers and latency of discovery process.

Performance Analysis of TCP and UDP over Mobile Ad hoc Network

In the network computing domain, mobile ad hoc networks (MANETs) have gained prominence during the recent years. These networks have been used in almost all domains of today’s life; especially in military and emergency operations. However, these application areas demand higher performance. It has been observed that better performance can’t be achieved without improved network management and the detailed network performance awareness. In this direction, this research work investigates the behavior of mobile ad hoc network under two transport protocols i.e. Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). The work analyzes various parameters such as bandwidth, throughput, jitter and out of order delivery etc. A test-bed has been established in university campus and the data transferred over the network is analyzed using iperf performance monitoring tool. There are two types of wireless networks [1, 2]. At one end, the wireless network can be established with the help of centralized entities called access points. The nodes communicate with each other via these access points. In the second category of wireless network i.e. wireless ad hoc network, the nodes discover and communicate with each other in peer to peer fashion without the help of any dedicated entity. In ad hoc network the nodes simultaneously work as a host as well as a router. The nodes are responsible themselves for different network operations. Sometimes ad hoc network can include fixed infrastructure as well. Such networks are called wireless mesh network (WMN). In WMN, there are stable nodes connected with each other in mesh fashions called as mesh routers. There are mesh clients that connect with mesh routers for communication purposes. If the participating nodes of an ad-hoc network are all mobile and can move freely anywhere, they are called mobile Performance Analysis of TCP and UDP over Mobile Ad hoc Network Keywords—ad hoc network; Iperf; performnce analysis; TCP; UDP.