A four-port wideband cavity-backed antenna is presented for indoor base stations applications. The composed of a square open cavity with an X-shaped isolating block and 4 feeding monopoles symmetrically orthogonally arranged in the aperture cavity. novel methodology based on Characteristic Modes Analysis (CMA) used identifying modes which are contributing to coupling. As result this analysis, p...

Abstract Delineation of homogenous precipitation regions can be rather challenging when considerable spatial variability and seasonality exist within a large geographic domain. This study aims to investigate redefine the spatio-temporal clusters Turkey by K-means clustering at different time scales. The monthly 234 stations for 1980–2020 period was included. Five are identified period, while va...

In 1998 and as part of a science cooperation and technology transfer effort, the Hydrologic Research Center (HRC) and collaborators designed and implemented at the Panama Canal Authority (PCA) a prototype forecasting system for the real time rainfall forecasting over a number of small sub-catchments of the 3,200-sqkm mountainous Panama Canal Watershed in Panama (Figure 1). The system (called PA...

BACKGROUND To explain the possible effects of exposure to weather conditions on population health outcomes, weather data need to be calculated at a level in space and time that is appropriate for the health data. There are various ways of estimating exposure values from raw data collected at weather stations but the rationale for using one technique rather than another; the significance of the ...