We draw attention to two problems associated with the use of instrumental variables (IV), the importance of which for empirical work has not been fully appreciated. First, the use of instruments that ...

Data can be presented in many ways that make it quicker and easier to read. In this section we will look at some of these ways. It is important to choose the best way to present data. A line graph can ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International stock ...

Although I'm pretty much allergic to finance and business news in the evening bulletins, I do look forward to Alan Kohler's segment on the ABC News because no one deals with graphs on telly better ...

Abstract: The ionosphere presents a significant challenge for the satellite-based augmentation system (SBAS) due to its unpredictable ionospheric variations affecting satellite single-frequency signal ...

Abstract: Fluid antenna systems (FAS) achieve spatial diversity through multiple closely spaced antenna ports, but the spatial correlation among these ports complicates accurate performance analysis.

Clinical Care Department, Ministry of Health, Lusaka District Health Office, Lusaka, Zambia. This study aimed to determine TB prevalence among Lusaka public transport bus station users (drivers, ...