Fuzzy Logic - Retrieval of Data from Database

There has been a complicated relationship associated with fuzzy logic and probability theory. All thetechniques in fuzzy logic discuss possibility theory and probability theory which measure two kinds ofuncertainty. In classical probability theory, a probability measure is a number between 0 and 1. Fuzzy rulebased system consists of a set of fuzzy rules with partially overlapping conditions. This paper demonstrates newmethodologies for predicting an output, when a particular input triggers with multiple fuzzy rules. This paperanalyzes the behavior of width of an interval to represent imprecision of the probability estimates. We alsopropose new applications of possibility theory and probability theory as can be applied to Fuzzy logic

Voice over Internet Protocol (VoIP) Performance Analysis, QoS Measures to Minimize Packet Loss, and Identifying Link Failures during Transmission

VoIP is the recent step of telephony evolution. VoIP stands for Voice over Internet Protocol packets. Voice over the IP network is a general term that refers to any means of converting voice calls into voice data packets that are transmitted over an IP network, either public or private. PSTN is circuit switched and VoIP is packet switched. In circuit switching irrespective of amount information to be sent, full bandwidth is reserved. In VoIP, distance between sender and receiver is not based on geographical distance. The transmission time depends on bandwidth and dynamic routing algorithms adopted. VoIP facilitates voice communication over Internet. One of the problems using VoIP is latency. When packets are sent in different routes, all the packets may not arrive at the same time. This causes latency. To retransmit/download a message all the packets are to be received. Even if one the packets are missing, complete message cannot be formed. This is not the case with PSTN. To overcome this problem, and to make transmission as efficient as PSTN, we adopt dynamic source routing algorithms. Secondly, potentiality decreases with the degradation of QoS. Some of the packets may be lost due to timeout or lack of buffer space. This cause erroneous data received and also requires the retransmission of the same message again and again. In this paper, we present generic algorithms to reduce latency and dynamic routing algorithms to minimize packet loss. Keywords: VoIP, Latency, QoS, Dynamic Source Routing algorithm

MARKOV MODEL: Analyzing its behavior for Uncertainty conditions

Markov model is used to analyze the dynamic behavior of the system in predicting the next state with the previous state. The process of attempting to guess the next character reveals information about the password strategy. In this paper, we give fuzzy inferences about the guessing passwords, by examining with the previous state and computing the possible outcomes of probability of each character. For some problems there cannot be complete solutions. For such problems Fuzzy inferences allow us to evaluate sub expressions. In the present paper, we discuss how to trace out some uncertainty conditions and analyze their behavior using fuzzy inference system and finally test the system for finding steady state behavior in guessing the characters in the password. Keywords: Markov model, Fuzzy sets, Transition matrix, Membership functions, Fuzzy Logi

Mobile Ad hoc Networks – Dangling issues of optimal path strategy

Ad Hoc network is a collection of wireless mobile hosts forming a  temporary network without the aid of any centralized administration, in which individual nodes cooperate by forwarding packets to each other to allow nodes to communicate beyond direct wireless transmission range. Routing is a process of exchanging information from one station to other stations of the network. Routing protocols of mobile ad-hoc network tend to need different approaches from existing Internet protocols because of dynamic topology, mobile host, distributed environment, less bandwidth, less battery power. The key concern is to analyze the ability of moving nodes in the network using Random Direction Mobility model based on the path availability. Key Words: Mobile ad hoc networks, Routing, Path stabilit

A Novel Scheme For Profit Minimization And Resource Distribution To Clients In Cloud

A DSR (double resource renting) system is planned primarily in which short-term leasing and long-term leasing are combined aiming at the present problems. This double leasing system can successfully guarantee the value of facility of all need sand reduce the resource waste importantly. Secondly, a service system is considered as an queuing model and the enactment indicators that affect the profit of our double leasing scheme are analyzed, e.g., the average charge, the ratio of requests that need temporary servers, and so forth. Thirdly, a profit maximization issue is framed for the double leasing system and the optimized configuration of a cloud platform is obtained by resolving the profit maximization issue, a series of calculations are showed to compare the profit of our planned scheme with that of the single leasing system

Cluster Based Neighbor Coverage Relaying (CBNCR)-A Novel Broadcasting Mechanism for Dissemination of Data in VANETs

VANETs are emerging technology that provides road safety, traffic efficiency convenience and comfort to both drivers and passengers. Vehicular Ad hoc Network (VANET) is a subset of Mobile Ad Hoc Networks. In VANETs vehicles are equipped with embedded sensors and wireless communication capabilities providing powerful and potential applications on safety, efficiency and public collaboration while on the road. A Vehicular Sensing Network (VSN) is a type of Wireless Sensor Network (WSN) which performs traffic routing and distributed surveillance. Data dissemination in VSN is used to communicate with neighboring vehicles which requires broadcasting of data to all vehicles in the network. Usually the problem with the broadcasting is redundancy, collision and contention. To improve the reliability of message communication the aforementioned problems are to be minimized. In this paper, we propose Cluster Based Neighbor Coverage Relaying mechanism to efficiently broadcast the data to all nearby vehicles in the network. The architecture combines the features of both Cluster Based Broadcasting and Multi-hop Relaying mechanisms. The targeted approach provides an optimal solution in delivering data over VANETs. Keywords: VANET, Broadcasting, Summary Harvesting, Data dissemination, Cluster based broadcasting, Multi-hop relaying, Cluster Based Neighbor Coverage Relaying (CBNCR)