Missing data in test result tables can significantly impact the analysis quality, especially in relation to technical sciences, where the mechanism generating missing data is often non-random, and their presence depends on the non-observed part of studied variables. In such cases, the application of an inappropriate method for dealing with missing data will lead to bias in the estimated distribution parameters.
The article presents a relatively simple method to implement in dealing with missing data generated as a result of the MNAR mechanism, which utilizes the censored random variable. This procedure does not modify the variable distribution form, which is why it ensures objective and efficient estimation of distribution parameters within studies affected by certain restrictions of technical or physical nature (censored distribution), with a relatively low workload. Furthermore, it does not require the application of specialized software. A prerequisite for using this method is the knowledge of the frequency and cause of missing data.
The method for estimating the random variable censored distribution parameters was shown based on the example of studying the leachability of selected heavy metals from a hardening slurry. The analysis results were compared with classical methods for dealing with missing data, such as, ignoring missing data observations (listwise or pairwise deletion), single imputation and stochastic regressive imputation.

Certain chemical parameters such pH, specific electric conductivity (SpC) and concentrations of chloride ions (Cl-) have been analysed in samples of precipitation collected close to the Polish Polar Station at Hornsund (PPS), SW Spitsbergen. On the basis of seasonal data from years 1993-1994 and 1998-1999, some differences are apparent from the two sets. There is also a marked difference in the seasonal results, especially with respects to pH values; summer precipitation (pH of which can be as low as 3.78) is much more acidic than winter. This was particularly notable in respect of the summer of 1993, and was presumably the result of a relatively unusual atmospheric circulation and a high influx of airborne contaminants from Europe. The wide variation in specific electrical conductivity measurements is considered to be related to variations in wind direction and speed. That precipitation the highest total dissolved salts, of 11.7 mm w.e. (water equivalent), (November 1993), provided 10.7 g of salt per square metre of tundra near the Polish Polar Station. The proximity of the sea, consequently the development of marine aerosols, largely determines the chemical nature of the precipitation. Thus, variations in the chloride ion concentrations during the study periods more or less reflect the variations in the marine aerosol influences on the nature of the polluted precipitation. An analysis of the atmospheric circulation reveals that the most acid precipitation occurs most frequently in the C-8 type of circulation (cyclonic S + SW) and also, less so, for type C-3 (anticyclonic S + SW).

Under the name of ‘pivot derivation’, this article reconsiders a phenomenon known by Arab grammarians and lexicographers as well as by Arabists and Semitists: the derivation of a secondary lexical family from a primary one, via a morphologically ambiguous form. Through the examples of ma‘īn, masīḥ and ma/isāḥa, and a rereading of Mez (1906), it proposes several extensions of this type of derivation, made possible not only by homophony but also by homography or phonetic accidents, and compatible with the borrowing from other languages.

This article discusses Benedict the XVI’s charting of the formation and history of Europe around a mission to reign as a sacred duty for the sake of Human Dignity in the light of Edith Stein’s insights into the relationship between community formation and objective values. First, an account of Ratzinger’s understanding of Europe as a concept of political geography is given. Secondly is discussed the mission at the heart of the formation of Europe according to Ratzinger, and how such a mission would, according to Stein, be particularly suited for shaping a people and a continent. The third section discusses Ratzinger’s understanding of Human Dignity in the light of Stein’s understanding of values.