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In this paper the exam results of the subject “Applied Mathematics for Informatics” from the last 10 years have been analysed. The exam has two parts: written test and oral exam. The grades of the students of the subject Applied Mathematics for Informatics formerly Methods of Operation Research have been low for a long time. We want to know if this is due to the quality of the tests or due to reducing the number of hours of contact teaching or due to the mathematical character of the subject and to the unpopularity of such kind of subjects or some other factors, for instance. Based on the bad results, students have also initiated a change in the scoring system. This article builds on our paper at the conference ERIE 2013. The main goals of this paper are to find out if the grades have had the tendency to decline during the years and to evaluate the validity, reliability, difficulty, and discrimination power of the tests.

We address the issue of managing beef herds from the perspective of small‐scale farmers and propose an optimization model applicable to the conditions of the Czech Republic. Our research focused on optimization under existing system conditions with established procedures. We present a linear programming model of beef herd development over a 10‐year period that considers the limited capacity of small‐scale farms. The key decision‐making variables represent the acquisition of heifers and the selection of heifers for fattening and breeding. For 102 selected scenarios, we demonstrate the impact of proper heifer acquisition and farmers' profit sensitivity on the key parameters. For the key parameters, we identify thresholds that determine the sustainability of small‐scale Czech beef farms. The proposed model demonstrates the crucial impact of subsidies on the profitability of beef farms. A 24% decrease in subsidies is shown to be the threshold at which a farmer's optimal strategy is to leave the market. [ABSTRACT FROM AUTHOR]

In this paper the exam results of the subject "Applied Mathematics for Informatics" (formerly Methods of Operation Research) from the last 13 years have been analysed. The exam has two parts: written test and oral exam. The grades of the students of the subject have been low for a long time. We would like to know if the low grades are due to the quality of the tests or due to a reducing number of hours of contact teaching. Another reason of low grades can be due to the mathematical character of the subject and to the unpopularity of such kind of subjects. Based on the bad results, students have also initiated a change in the scoring system. This article builds on our paper at the conference ERIE 2013. The main goals of this paper are to find out if the grades have had the tendency to decline during the years and to evaluate the validity, reliability, difficulty, and discrimination power of the tests. [ABSTRACT FROM AUTHOR]