The objective of this report is to document the process and summarize the results from the second phase of the pilot implementation of statistical models for measuring the value-added of Bulgarian schools through analysis of the national student' assessments results. This report presents the...

The objective of this report is to describe the process and summarize the results from the pilot implementation of statistical models for measuring the value-added of Bulgarian schools through analysis of the national student' assessments results. This report presents the technical aspects of...

The objective of this report is to describe the process and summarize the results from the pilot implementation of statistical models for measuring the value-added of Bulgarian schools through analysis of the national student’ assessments results. This report presents the technical aspects of...

Abstract We propose modeling COVID-19 infection dynamics using a class of two-type branching processes. These models require only observations on daily statistics to estimate the average number of secondary infections caused by a host and to predict the mean number of the non-observed infected...

The probability for a device to work properly after a certain period of time will be considered using the Strehler-Mildvan model. We will suppose that the functionality of a device depends on an unknown parameter , which decreases progressively in time. The device stops working if goes below a...

The SABER Service Delivery (SABER SD) survey instrument was developed as an initiative to uncover bottlenecks that inhibit student learning in low and middle-income countries and to better understand the quality of education service delivery in a country as well as gaps in policy implementation....

The SABER Service Delivery (SABER SD) survey instrument was developed as an initiative to uncover bottlenecks that inhibit student learning in low and middle-income countries and to better understand the quality of education service delivery in a country as well as gaps in policy implementation....

Bulgaria is undergoing a profound socio-economic transformation brought about by extraordinary demographic change. Between 1950 and 1990, Bulgaria’s population grew from 7.3 million to 8.8 million and then declined to 7.5 million by 2010. Low birth rates and high mortality rates combined with...