The past year has seen explosive growth in internet traffic. Currently, the most common way of accessing the internet is via the switching systems and the interoffice trunk facilities of the Public Switched Telephone Network (PSTN). The PSTN was designed to carry voice calls that have an average call holding time of about 3 minutes. The nominal 3 minute call assumption pervades all aspects of t...

We consider a system of two separate finite-buffer M/M/1 queues served by a single server, where the switching mechanism between the queues is thresholdbased, determined by the queue which is not being served. Applications may be found in data centers, smart traffic-light control and human behavior. Specifically, whenever the server attends queue i (Qi ) and the number of customers in the other...

There is an imperative need to understand how, where and when traffic accidents occur in order to develop appropriate accident reduction strategies. An improved understanding of the location, time and reasons for traffic accidents makes a significant contribution to preventing them. Traffic accident occurrences have been extensively studied from different spatial and temporal points of view usi...

Abstract. Extraction of interesting knowledge from large spatial databases is an important task in the development of spatial database systems. Spatial data mining is the branch of data mining that deals with spatial (location) data. Analyzing the huge amount (usually terabytes) of spatial data obtained from large databases such as credit card payments, telephone calls, environmental records, c...

Fast and accurate network traffic identification is becoming essential for network management, high quality of service control and early detection of network traffic abnormalities. Techniques based on statistical features of packet flows have recently become popular for network classification due to the limitations of traditional port and payload based methods. In this paper, we propose a metho...

Internet telephony (or VoIP) has been viewed in two different ways. First, some hold that it is largely similar to earlier architectural changes in the PSTN, continuing the transition from analog to circuit-switched digital and now to packet-switched transmission. Others believe that Internet telephony is primarily another Internet application that happens to interconnect with a “legacy” networ...

background: traffic accidents are the main cause of death and disability in the world and iran. the injuries caused by traffic accidents may result in severe limitations and worst outcomes in various aspects of lives of traffic accident injured people and their families. therefore, understanding their experiences is very important to design better programs with regard to their treatment and ret...

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Current electricity tariffs for retail rarely provide incentives for intelligent demand response of flexible customers. Such customers could otherwise contribute to balancing supply and demand in future smart grids. This paper proposes an innovative risk-sharing tariff to incentivize intelligent customer behavior. A two-step parameterized payment scheme is proposed, consisting of a prepayment b...