Abhishek Majumder

An approach to optimize the EDM process parameters using desirability-based multi-objective PSO

The present work deals with the prediction of optimal parametric data-set with maximum material removal rate (MRR) and a minimum electrode wear ratio (EWR) during Electrical discharge machining (EDM) of AISI 316LN Stainless Steel. For this purpose, empirical models showing relation between inputs and outputs were developed using response surface methodology. Desirability-based multi-objective particle swarm optimization-original, desirability-based multi-objective particle swarm optimization-inertia weight, and desirability-based multi-objective particle swarm optimization-constriction factor are then used to estimate the optimal process parameters for maximum MRR and minimum EWR. The results obtained by applying these three desirability-based multi-objective particle swarm optimization (DMPSO) algorithms are compared. From the comparison and confirmatory experiment, it can be observed that DMPSO-CF is the most efficient algorithm for the optimization of EDM parameters.

Profile based access control model in cloud computing environment

Cloud computing is now a day a very lucrative technology due to its efficiency, cost effectiveness, flexibility, scalability and pay-per-use. But with these advantages many new problems have been introduced and some existing problems have become so much critical. One of the existing problems that have become critical in cloud environment is access control. Access control is a procedure that allows a user to access data or file from system. There are several access policies which have to be followed by the users for accessing any kind of data from a server. In cloud environment there are many access control models. In this paper a new access control model namely Profile Based Access Control Model (PrBAC) has been proposed. There are several problems for accessing data like high access time, high searching cost and problem of data redundancy. Another problem of access control models is that the Data Owner (DO) must be always online when user wants to access data from cloud server. By PrBAC all these problems are minimized.

Design and Analysis of a Dynamic Mobility Management Scheme for Wireless Mesh Network

Seamless mobility management of the mesh clients (MCs) in wireless mesh network (WMN) has drawn a lot of attention from the research community. A number of mobility management schemes such as mesh network with mobility management (MEMO), mesh mobility management (M3), and wireless mesh mobility management (WMM) have been proposed. The common problem with these schemes is that they impose uniform criteria on all the MCs for sending route update message irrespective of their distinct characteristics. This paper proposes a session-to-mobility ratio (SMR) based dynamic mobility management scheme for handling both internet and intranet traffic. To reduce the total communication cost, this scheme considers each MCs session and mobility characteristics by dynamically determining optimal threshold SMR value for each MC. A numerical analysis of the proposed scheme has been carried out. Comparison with other schemes shows that the proposed scheme outperforms MEMO, M3, and WMM with respect to total cost.

A Forward Pointer based mobility management scheme for multi-hop multi-path wireless mesh network

Now-a-days with the increasing number of mesh clients it has become a challenging task to provide uninterrupted internet connectivity for the clients. To solve this problem several mobility management schemes such as iMesh and MEMO, have been proposed. The major drawbacks of these schemes are: larger handoff delay and higher signaling overhead. A new mobility management scheme named Forward Pointer Based Routing (FPBR) is proposed here and an analytical comparison is made with iMesh and MEMO. FPBR achieves low handoff latency and less signaling overhead. Moreover, FPBR supports multipath routing. This increases the reliability of the network.

A tree based mobility management scheme for wireless mesh network

The importance of wireless mesh network is increasing day by day with the popularity of hand held devices. But like other wireless networks, one major problem of wireless mesh network is maintenance of network connectivity to the mobile nodes in-spite-of their random movement. For solving this problem, several mobility management schemes such as Infrastructure-mode Wireless Mesh Network (iMesh), MEsh networks with Mobility management (MEMO), Wireless mesh Mobility Management (WMM) and Mesh Mobility Management (M3) have been proposed. But the difficulty with these existing schemes is their high communication cost. In this paper a tree based proactive mobility management scheme has been proposed for handling both internet and intranet traffic. A numerical analysis of the proposed scheme has been carried out. Finally, the scheme has been compared with iMesh, MEMO and WMM.

Implementation of enhanced forward pointer-based mobility management scheme for handling internet and intranet traffic in wireless mesh network

To implement WMN, IEEE 802.11s has been developed. The routing protocol for selecting a path between two mesh stations in IEEE 802.11s is hybrid wireless mesh protocol (HWMP). But mobility of external stations has not been considered in IEEE 802.11s. For handling movement of clients, many mobility management schemes have been proposed. Some of such schemes are: ANT, Mesh Mobility Management (M

Classification of Seamless Handoff Process in Wifi Network Based on Radios

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Standard Deviation Method Based PSO: An Instigated Approach to Optimize Multi-Objective Manufacturing Process Parameters

3), Infrastructure Mesh (iMesh), SMesh, MEsh networks with MObility management (MEMO), Wireless mesh Mobility Management (WMM), Static Anchor Scheme, Dynamic Anchor Scheme, LMMesh, Session-to-Mobility-Ratio based Scheme and Forward Pointer-Based Mobility Management Scheme (FPBR). But none of the schemes except FPBR have been integrated with IEEE 802.11s for providing mobility support to the external stations. FPBR has been proposed to enhance IEEE 802.11s for providing mobility support to external stations, but it can support internet traffic only. In WMN both internet and intranet traffic to and from the external station is important. In this paper, an improved version of FPBR named Enhanced FPBR (EFPBR) Scheme has been introduced to handle both internet and intranet traffic. Both EFPBR and HWMP have been numerically analyzed. HWMP and EFPBR schemes are simulated and the performances are compared. From the performance comparison, it can be observed that EFPBR performs better than that of IEEE 802.11s concerning throughput, end-to-end delay, routing overhead and average handoff cost. The number of route management packets transferred per handoff measured from numerical analysis and simulation has also been compared.