This contribution describes work done on alarm processing and alarm handling analyses based on signal filtering and validation by a control system from a project delivered to an industrial partner.New knowledge developed during this research is being tested further under real conditions and is contributing to the recommendations for alarm design improvements with the aim of implementing them into our project with an industrial partner.
The article aims to present the results of the analysis of eight Neolithic ceramic figurines from the Lengyel culture settlement Těšetice-Kyjovice – Sutny, Czech Republic. We indicated the possibilities for acquiring analytical data, although destructive methods were unacceptable. We included methods neglected to date, but widely available in the common archaeological laboratory. Information on the composition of the ceramic matrix, the provenance of inclusions, the techniques used for shaping, firing, operating and discarding are all of key importance for advancing the discussion on the nterpretational potential of ceramic anthropomorphic figurines from typological and religionist discourses to analytically-focused discussions supported by hard data. Two serious factors have thus far prevented the widespread use of analytical methods: the destructive nature of the evidential analyses, which is contradictory to heritage protection and general awareness of the value and rarity of such finds. The second factor relates to the prohibitive cost of analyses when applied to a statistically robust number of samples. On the other hand, in the absence of broad mapping of measurable data, we will remain dependent on only individually published analyses of isolated samples, typically from a different culture, period or geographical territory. We believe the use of non- and semi-destructive methods offers a solution. With the aim of achieving the lowest destructive impact, we conducted an analysis of eight ceramic figurines by use-wear analysis, high resolution 3D analysis, portable-X-ray fluorescence (p-XRF) measurements and microscopy of polished sections.
The question of mining under the main haulage level as a way by which in some cases coal reserves can be effectively extracted is still discussed. The paper introduces advantages and disadvantages of this method. It presents examples of the bedding of a seam in a limited depth under level, for example 50 m, when the opening by the under level mining method is obviously more advantageous. Special attention is given to risks of ventilation short circuit which are higher in this method compared to classical opening. The paper also gives a brief economical reflection allowing to determine the efficiency of under level mining.
AbstraktOtázka podpatrového dobývání, jako způsobu, kterým lze v určitých případech efektivně vytěžit uhelné zásoby, je stále diskutována. V uvedeném příspěvku se uvádějí výhody i nevýhody této metody. Jsou uvedeny příklady uložení slojí do omezené hloubky pod patrem, například 50 m, kdy je příprava sloje podpatrovým dobýváním zřejmě výhodnější. Upozorňuje se také na rizika větrního zkratu, které je u této metody, oproti klasické otvírce, vyšší. V práci je také uvedena stručná ekonomická úvaha, podle které lze určit efektivnost podpatrového dobývání.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.