1,720,957 research outputs found
Properties and application of nodular cast iron in the production of parts agricultural techniques
No full textNodularni lijev je vrsta lijevanog željeza s grafitom unutar svog sastava. Dobija se dodavanjem magnezija u rastaljeno željezo. Magnezij uzrokuje kristalizaciju grafita što dovodi do pojave kuglica. Nodularni lijev karakterizira visoka čvrstoća, žilavost, istezljivost, dinamička izdržljivost te otpornost na trošenje. Zbog ovih karakteristika često se koristi u izradi poljoprivrednih strojeva i uređaja. Proizvodnja nodularnog lijeva od njegovog otkrića prije 60-ak godina kontinuirano raste, a s vremenom se nastoje poboljšati proizvodni postupci i primijeniti nove metode i modeli računalnih simulacija, kako bi se smanjili troškovi i smanjio udio škartnih odljevaka.Nodular cast iron is a type of cast iron with graphite in its composition. It is obtained by adding magnesium to molten iron. Magnesium causes crystallization of graphite, which leads to the appearance of balls. Nodular cast iron is characterized by high strength, toughness, extensibility, dynamic durability and wear resistance. Because of these characteristics, it is often used in the production of agricultural machines and devices. The production of nodular cast iron has been continuously growing since its discovery about 60 years ago, and over time efforts are being made to improve production procedures and apply new methods and computer simulation models, in order to reduce costs and reduce the proportion of scrap castings
Technical Structure of Transport Means in Public Freight Transport by Age
Get PDFTema završnog rada odnosi se na analizu tehničke strukture transportnih sredstava u javnom cestovnom teretnom prometu prema dostupnim podacima s ciljem utvrđivanja postojećeg stanja transportnih sredstava u javnom teretnom cestovnom prometu prema starosti u Republici Hrvatskoj. Prometni sustav karakterizira prostorna i vremenska dimenzija, te on objektivno postoji i moţe se definirati za svaki zemljopisni prostor u bilo kojem vremenskom periodu. Cestovna transportna sredstva su motorna vozila i priključna vozila (prikolice i poluprikolice) kojima se obavlja transport u putničkom, odnosno teretnom prometu. U strukturi cestovnog teretnog voznog parka ustanovljena je prosječna starost: a) za teretna motorna vozila od 57,6 % za vozila starija od 10 godina, b) za priključna cestovna teretna vozila od 66,3 %. Analizom strukture voznog parka u izučavanom razdoblju od 1997. do 2015. godine ustanovljena je najveća zastupljenost izrade kod teretnih motornih vozila od 1997. do 2008. godine s prosječnim udjelom od 82,5 %, a kod priključnih vozila u razdoblju od 2005. do 2009. s prosječnim udjelom od 22,3 %. Prometni potencijal Republike Hrvatske nije u dovoljnoj mjeri iskorišten u pogledu privlačenja međunarodnih prometnih tokova i optimiranog korištenja, prirodnih resursa, a moţe se uočiti zastarjelost voznog parka teretnih cestovnih motornih i priključnih vozila Republike HrvatskeThe topic of the final work relates to the analysis of the technical structure of transport equipment in public road freight traffic according to available data in order to determine the existing state of transport in public freight transport by age in the Republic of Croatia. The traffic system is characterized by spatial and temporal dimensions, and it is objectively present and can be defined for each geographic area at any time. Road transport vehicles are motor vehicles and trailer vehicles (trailers and semi-trailers) which perform transport in passenger or freight traffic. In the structure of the road freight fleet, the average age was established: a) for motor vehicles of 57.6% for vehicles older than 10 years; b) for trailer vehicles of 66.3%. By analyzing the structure of the fleet in the period 1997-2005, the largest representation of car engine cargoes was established from 1997 to 2008 with an average share of 82.5%, and for vehicles in the period from 2005 to 2009 with an average share of 22.3%.. The traffic potential of the Republic of Croatia has not been used to the extent of attracting international traffic flows and optimized use of natural resources, and the obsolescence of the car fleet of cargo motor and motor vehicles of the Republic of Croatia can be observed
Properties and application of nodular cast iron in the production of parts agricultural techniques
No full textNodularni lijev je vrsta lijevanog željeza s grafitom unutar svog sastava. Dobija se dodavanjem magnezija u rastaljeno željezo. Magnezij uzrokuje kristalizaciju grafita što dovodi do pojave kuglica. Nodularni lijev karakterizira visoka čvrstoća, žilavost, istezljivost, dinamička izdržljivost te otpornost na trošenje. Zbog ovih karakteristika često se koristi u izradi poljoprivrednih strojeva i uređaja. Proizvodnja nodularnog lijeva od njegovog otkrića prije 60-ak godina kontinuirano raste, a s vremenom se nastoje poboljšati proizvodni postupci i primijeniti nove metode i modeli računalnih simulacija, kako bi se smanjili troškovi i smanjio udio škartnih odljevaka.Nodular cast iron is a type of cast iron with graphite in its composition. It is obtained by adding magnesium to molten iron. Magnesium causes crystallization of graphite, which leads to the appearance of balls. Nodular cast iron is characterized by high strength, toughness, extensibility, dynamic durability and wear resistance. Because of these characteristics, it is often used in the production of agricultural machines and devices. The production of nodular cast iron has been continuously growing since its discovery about 60 years ago, and over time efforts are being made to improve production procedures and apply new methods and computer simulation models, in order to reduce costs and reduce the proportion of scrap castings
Properties and application of nodular cast iron in the production of parts agricultural techniques
No full textNodularni lijev je vrsta lijevanog željeza s grafitom unutar svog sastava. Dobija se dodavanjem magnezija u rastaljeno željezo. Magnezij uzrokuje kristalizaciju grafita što dovodi do pojave kuglica. Nodularni lijev karakterizira visoka čvrstoća, žilavost, istezljivost, dinamička izdržljivost te otpornost na trošenje. Zbog ovih karakteristika često se koristi u izradi poljoprivrednih strojeva i uređaja. Proizvodnja nodularnog lijeva od njegovog otkrića prije 60-ak godina kontinuirano raste, a s vremenom se nastoje poboljšati proizvodni postupci i primijeniti nove metode i modeli računalnih simulacija, kako bi se smanjili troškovi i smanjio udio škartnih odljevaka.Nodular cast iron is a type of cast iron with graphite in its composition. It is obtained by adding magnesium to molten iron. Magnesium causes crystallization of graphite, which leads to the appearance of balls. Nodular cast iron is characterized by high strength, toughness, extensibility, dynamic durability and wear resistance. Because of these characteristics, it is often used in the production of agricultural machines and devices. The production of nodular cast iron has been continuously growing since its discovery about 60 years ago, and over time efforts are being made to improve production procedures and apply new methods and computer simulation models, in order to reduce costs and reduce the proportion of scrap castings
The Impact of Transport Insurance on Transport Logistics Development
No full textTransportno osiguranje je grana osiguranja u okviru koje se osiguravaju imovinski interesi izloženi prijevoznim i drugim transportnim rizicima. Ono je bitan faktor u svim poslovnim djelatnostima, a posebice u logističkim procesima prijevoza i osiguranja robe jer efikasno razrađena prijevozna logistika kvalificira tvrtke na konkurentno tržište te pruža učinkovitu logističku uslugu. Prilikom svake razmjene tereta važno je ugovoriti određeno osiguranje kako bi roba bila isporučena kupcu onakva kakvu je prijevoznik preuzeo od prodavatelja. Ukoliko dođe do štete, ugovaratelj osiguranja podnosi odštetni zahtjev, a osiguravajuće društvo pokreće proces likvidacije štete.Transport insurance is a branch of insurance in which interests of goods exposed to transport risks are insured. It is an important factor in all business activities, especially in the logistics processes of transport and insurance of goods, because efficiently developed transport logistics qualifies companies to a competitive market and provides an efficient logistics service. During each exchange of cargo, it's important to arrange certain insurance so that products are delivered to the buyer as the carrier has taken over from the seller. If damage occurs, the policyholder submits a claim for damages, and the insurance company initiates the process of liquidation of the damage
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
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