Software Defined Network (SDN) is a new architecture for network management and its main concept is centralizing network management in the network control level that has an overview of the network and determines the forwarding rules for switches and routers (the data level). Although this centralized control is the main advantage of SDN, it is also a single point of failure. If this main contro...

this paper demonstrates design and fabrication o f a mechatronic system for human drowsiness detection. this system can be used in multiple places. for example, in factories, it is used on some dangerous machinery and in cars in order t o prevent the operator o r driver from falling asleep. this system is composed of three parts: (1) mechanical, (2) electrical and (3) image processing system. a...

The doubly fed induction generator (DFIG) is one of the most popular technologies used in wind power systems. With the growing use of DFIGs and increasing power system dependence on them in recent years, protecting of these generators against internal faults is more considered. Loss of excitation (LOE) event is among the most frequent failures in electric generators. However, LOE detection stud...

Channel errors significantly impair the quality of GSM transmitted speech. In this contribution, we first analyze the speech distortions caused by error control failures or due to the basic frame substitution technique used by the GSM Full Rate. In particular, we show how this frame substitution procedure may introduce frame rate harmonics in the speech spectrum. Then we present algorithms that...

background: tuberculosis (tb) is a pandemic disease. it is the second leading cause of death from infectious diseases after human immunodeficiency virus (hiv) in the world . the main objective of this paper was to determine and compare the epidemiology of tb incidence rate and its trend changes during 1990-2010 in six who regions regarding age, gender and income levels. methods: the average ann...

In this paper a fraud detection method is proposed which user behaviors are modeled using two main components namely the un-normal trend analysis component and scenario based component. The extent of deviation of a transaction from his/her normal behavior is estimated using fuzzy membership functions. The results of applying all membership functions on a transaction will then be infused and a f...

Background: Metastasis and recurrence of colorectal cancer after treatment is attributed to stem cells. The aim of this study was to determine the relationship between the expression of stem cell marker CD166 in colorectal cancer by immunohistochemistry and clinicopathologic parameters.Methods: From 2006 to 2012, 121 colectomy specimens of patients with colon cancer that were operated in Babol...