1,720,961 research outputs found
Phenomenon of water in mining - gold panning, findings of ore mills in Slovakia.
No full textFajta, M. 2015: Phenomenon of water in mining - gold panning, findings of ore mills in Slovakia. [Master's thesis] Water has always been closely associated with the mining and processing of precious metals. Either it served as a secondary source from which gold was gained by gold-washing, or as a tool for further processing of primary mined ore. Thesis is divided into two sections which describe both of these options. In the first part, thesis deals with gold-panning. It describes sources for the history study of gold-panning in Slovakia and it presents current state of research. On the basis of historical knowledge from "De Re Metallica libri XII." (G. Agricola 1556) are presented the different types of chutes, which are used for gold-washing. This section also includes excursion about mining archaeology and excursion about origin and appearance of gold in Slovakia. The second part describes different steps in the processing of primary mined ores. Since there was no archaeological research of medieval facilities for processing ores in Slovakia, in the paper are presented examples of two researches of mining facilities from Czech Republic. In the chapters describing processing of ores is the biggest attention devoted to ore mills. The most common evidence for the existence of such mills are..
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Fenomén vody v hornictví - rýžování zlata, nálezy rudných mlýnů na Slovensku
No full textFajta, M. 2015: Fenomén vody v baníctve - ryžovanie zlata, nálezy rudných mlynov na Slovensku [Diplomová práca] Voda bola vždy úzko spojená s ťažbou a spracovaním drahých kovov. Buď slúžila ako sekundárny zdroj, z ktorého sa ryžovaním získavalo zlato alebo ako nástroj k ďalšej úprave primárne ťažených rúd. Práca je tak rozdelená na dve časti popisujúce obe z týchto možnosti. V prvej časti práca pojednáva o ryžovaní, prameňom k jeho štúdiu, histórii tejto činnosti na Slovensku a predkladá súčasný stav bádania. Na základe dobových poznatkov od G. Agricolu (1556) sú predstavené jednotlivé druhy splavov, ktoré sa na ryžovanie používali. Súčasťou tejto časti sú aj exkurzy o montánnej archeológii a o pôvode výskytoch zlata na území Slovenska. V druhej časti práca popisuje jednotlivé kroky pri spracovávaní primárne vyťažených rúd. Keďže stredoveké zariadenia určené k tomuto spracovávaniu neboli na Slovensku ešte predmetom výskumu, v práci sú prezentované dva z takýchto skúmaných areálov z územia Českej republiky. V rámci spracovávania rúd je najväčšia pozornosť venovaná rudným mlynom. Najčastejšími dokladmi existencie takýchto mlynov sú mlynské kamene. Tie sa svojimi sústredenými ryhami, ako aj svojou mohutnosťou líšia od stredovekých kameňov k mletiu obilia. Posledné kapitoly práce sú venované takýmto...Fajta, M. 2015: Phenomenon of water in mining - gold panning, findings of ore mills in Slovakia. [Master's thesis] Water has always been closely associated with the mining and processing of precious metals. Either it served as a secondary source from which gold was gained by gold-washing, or as a tool for further processing of primary mined ore. Thesis is divided into two sections which describe both of these options. In the first part, thesis deals with gold-panning. It describes sources for the history study of gold-panning in Slovakia and it presents current state of research. On the basis of historical knowledge from "De Re Metallica libri XII." (G. Agricola 1556) are presented the different types of chutes, which are used for gold-washing. This section also includes excursion about mining archaeology and excursion about origin and appearance of gold in Slovakia. The second part describes different steps in the processing of primary mined ores. Since there was no archaeological research of medieval facilities for processing ores in Slovakia, in the paper are presented examples of two researches of mining facilities from Czech Republic. In the chapters describing processing of ores is the biggest attention devoted to ore mills. The most common evidence for the existence of such mills are...Ústav pro archeologiiInstitute of ArchaeologyFilozofická fakultaFaculty of Art
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Človek a montánna krajina neskorého stredoveku a novoveku : príklad Banskej Štiavnice
No full textThere are several disciplines including environmental archaeology that address the current topic of environmental protection. Mining and metallurgical activities have always had a negative impact on nature (heaps of waste rock and slag, contamination of watercourses, gas fumes from smelters…), yet nature has always been able to cope with these human interventions. The wider region of Banská Štiavnica, a UNESCO World Heritage Site, is a proof of this. The area was particularly affected by these activities in the period between the 16th and 18th centuries. The relics can still be seen today in the landscape, but especially on mining maps in the archive. The ideological dilemma regarding the impact of mining and metallurgy on nature and people is associated not only with the 20th and 21st centuries but was, paradoxically, already topical in the 16th century. It was aptly elaborated by G. Agricola, a well-known scholar and metallurgist who, on the one hand, pointed out the harmful effects of these activities but was also able to evaluate their benefits.Aktuálnou témou ochrany životného prostredia sa zaoberajú viaceré vedné odbory, medzi nimi aj archeológia (environmental archeology). Banská a hutnícka činnosť človeka vždy negatívne vplývala na prírodu (haldy hlušiny a trosky, kontaminácia vodných tokov, plynové splodiny z hút...), avšak príroda sa s týmito zásahmi človeka vždy vedela vyrovnať. Dôkazom toho je aj širší región Banskej Štiavnice, turisticky atraktívny, zapísaný na listinu UNESCO. Táto oblasť bola atakovaná uvedenou činnosťou najmä v období v období 16.–18. storočia. Relikty možno vidieť dodnes v teréne, ale najmä na vyobrazeniach banských máp v archíve. Názorová dilema o vplyve baníctva a hutníctva na prírodu a človeka nie je známa len pre 20.–21. storočie, ale takou bola paradoxne už v 16. storočí. Veľmi výstižne ju spracoval známy autor o baníctve a hutníctve G. Agricola, ktorý na jednej strane poukázal na škodlivé vplyvy tejto činnosti, ale vedel zhodnotiť aj jej prínos
Research into a Castle Chapel at the Staré Mesto Location, Banská Štiavnica
No full textNa kopci ležiacom nad Banskou Štiavnicou sa dlhodobo odkrýva stredoveký hrad a technické zariadenia 12.–17. storočia, súvisiace s ťažbou a spracovaním rúd drahých kovov. Na vrcholovej polohe bol v rokoch 2009–2012 odkrytý pôdorys kaplnky s rozmermi 8 × 3,5 m (vnútorná svetlosť), datovanej pomocou bohatého zastúpenia výrazných fragmentov architektonických článkov 14. storočia. V roku 2012 sa realizovala analýza vzoriek uhlíkov z parapety okna metódou C14, ktorá datuje zánik kaplnky do polovice 15. storočia. To úplne korešponduje aj s archívnymi údajmi o vojenskom útoku na mesto v roku 1442.A medieval castle and its technical facilities from the 12th–17th centuries connected with the mining and processing of ores of precious metals have been investigated on a hill above the town of Banská Štiavnica. In 2009–2012 a ground plan of a chapel with dimensions of 8 × 3.5 m was revealed on the site, dated with the use of multiple and distinct fragments of architectural elements to the 14th century. Analysis of carbon samples from a window sill by means of the carbon dating method was carried out in 2012, placing the decline of the chapel in the mid-15th century. This information fully corresponds to archive records concerning a military attack on the town in 1442
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