In August 2010 Facebook launched Places, a locationbased service that allows users to check into points of interest and share their physical whereabouts with friends. The friends who see these events in their News Feed can then respond to these check-ins by liking or commenting on them. These data consisting of the places people go and how their friends react to them are a rich, novel dataset. ...

abstract angstrom-prescott equation is one of the most commonly used methods for the estimation of global solar radiation (rs) based on sunshine hours. the critical step in the application of this method's is the calibration of its coefficients for each region. although the coefficients of the equation have been calibrated in different parts of the world, the effect of different time scales has...

News materials are reports on events occurring in a given time and location. Looking at the influence of individual event, an event that has news reported worldwide is strategically more important than one that is only covered by local news agencies. In fact, news coverage of an event can accurately determine the event’s importance and potential impact on the society. In this paper, we present ...

Lyme disease is caused by the spirochete Borrelia burgdorferi. Depending on the stage of illness, infection may be limited to the skin or involve the cardiac, nervous and musculoskeletal systems. Herein, we report a case of Lyme disease in a 23-year-old woman from North of Iran (Mazandaran) in early-localized stage of erythema chronicum migrans. The diagnosis was confirmed by the presence of se...

the variability of temperature and precipitation is regarded as one of the main characteristics of the climate.precipitation and its results, especially results such as droughts, vary on different temporal and spatial scales. thepurpose of this paper is to determine the frequency of the inter-annual variability of the driest month in north-westiran. in order to obtain the best results, we used ...