this study deals with the visibility, influence rate of diffrent links in virtual universities websites. the current community research is consisted of websites of 21 non medical universities websites and 8 websites of iran medical universities. the websites have been retrieved by the use of searchin and goolge webometic tools and are downloaded on personal computers to analyze their links. the...

The SpectrumWare project is applying a software oriented approach to wireless communication and distributed signal processing. Advances in processor and analog-to-digital conversion technology have made it possible to implement virtual radios that directly sample wide bands of the RF spectrum, and process these samples in application software. The elimination of dedicated hardware introduces tr...

Testing of analog and mixed signal circuit has often given bottleneck in the system design. Studies based on the simulation results have been presented by many authors. In this study an intelligent virtual instrument system design for the diagnosis of parametric faults in mixed signal analog circuit is presented. A benchmark R2R digital to analog converter mixed signal circuit is used for fault...

Blind detection of a desired user’s signal in a periodic long-code (PLC) direct sequence code division multiple access (DS-CDMA) system is considered. A code-constrained inverse filter criterion (IFC)-based blind detector for short-code CDMA signals to detect a desired user’s signal was recently presented by Tugnait and Li (July 2001). In PLC CDMA systems, a user signal may be treated as the su...

background: in-service education is one of the best and major methods to provide, train and improve the performance of the staffs. this study aims to determine the strengths and weaknesses of the virtual trainings from the staffs' perspective of mashhad university of medical sciences. methods: this is a cross-sectional study conducted among staffs from different parts of the therapy depart...

A multipath enabled singular value decomposition (SVD) algorithm is presented, which will allow computation of wideband (polynomial) singular values, and hence, the signal+noise and noise subspaces. Polynomial singular values are ordered according to total energy. The number of sources can be estimated using the scalar total energy values. Results using both simulated data on the computer and a...

Human pulse signal is a very important signal of human body. By analyzing pulse signal one can determine any kind of abnormality related to human body. Both invasive and non invasive methods are there to acquire pulse signal for analysis. Out of these, non invasive methods are preferred because they are painless and safe. This paper describes the process and steps of acquiring the pulse signal ...

The emergence of mobile broadband technology provides a valuable service for users to transfer media content, surf the internet, and stream video on their mobile. Higher datarate capability depends on a strong signal from a base station and capacity from the network. 70-90% of wireless high data-rate demand is located inside buildings. A traditional macro base stations thin capacity blanket is ...

We present a transmission-mode confocal laser scanning microscope system based on the use of second-harmonic generation (SHG) for signal detection. Our method exploits the quadratic intensity dependence of SHG to preferentially reveal unscattered signal light and reject out-of-focus scattered background. The SHG crystal acts as a virtual pinhole that remains self-aligned without the need for de...

In the present contribution the problem of signal interception in a virtual MIMO scenario is considered. A possible distributed signal interception algorithm which is able to detect and discriminate between two similar OFDM signals is analyzed. Distributed and stand-alone algorithms are compared through simulations in a multipath environment and the different levels of cooperation required amon...