1,720,952 research outputs found
Finding Systematical Transport Solution for Crushed Limestone on Example of AS Kunda Nordic Tsement
No full textPeamiseks probleemiks antud töös oli peagi avatava karjääri ja tehase vaheline süsteemne purustatud lubjakivi transpordilahenduse puudumine. Lisaks puudus hetkel tulevases karjääris infrastruktuur ning pole tehtud ühtegi kalkulatsiooni leidmaks süsteemset transpordilahendust. Käesolevas lõputöös leiti süsteemne transpordilahendus purustatud lubjakivi transportimiseks AS Kunda Nordic Tsemendi Toolse-Lääne karjäärist tehasesse. Töö käigus andis autor ülevaate ettevõtte hetkeolukorrast ja transpordi kasutusest, make-or-buy otsusest, võimalikest transpordilahendustest ja nende komponentidest, ning leidis süsteemseima transpordilahenduse. Vajalike andmete teada saamiseks tegi autor erinevate võtmeisikutega mittestruktureeritud intervjuud ning viis läbi vaatlusi. Intervjuude käigus kogus autor andmeid taristute ehituse, ehituse komponentide ja transpordi hindade kohta. Vaatluste käigus tutvus autor erinevate transpordivahendite töömehhanismiga ning mõõtis tootlikkuse arvutamise jaoks laadimise vahemaid ja kiiruseid. Arvutused koostas autor kopplaaduri, kallurautode, raudtee- ja konveiertranspordi kohta. Autor arvutas välja kopplaaduri tootlikkuse võttes aluseks 12 tunnilise töövahetuse, kopa suuruseks 5,2 kuupmeetrit ning laadimisdistantsiks 50 meetrit. Sellisel juhul on kopplaadur võimeline aastas laadima 1,04 miljonit tonni. Samuti arvutas autor välja sisseostetava teenuse ja oma kopplaaduri omamise hinnavahe kui kopp laeb aastas üks miljon tonni. Sisseostetava teenuse hinnaks kujunes 0,20 eurot/t, laaduri omamise hinnaks kujunes 0,13 eurot/t. Aastase toormevajaduse laadimise korral oma kopaga võidaks ettevõte 70000 eurot. Kallurauto tootlikkuse arvutustes selgus, et vaja läheb 7 veoühikut 12 tunnilise töövahetuse korral. Kallurauto omahinnaks kujunes 0,94 eurot/t ning sisseotsetava teenuse puhul 0,98 eurot/t. Aastase toormevajaduse transportimise korral oma kopplaaduriga ja ettevõtte masinapargiga võidaks aastas 40000 eurot. Konveiertranspordi ehituse maksumuseks kujunes 5 773167 eurot. Arvestades erinevaid hooldus-ja elektrikulusid ning võttes konveieri amortisatsiooni ajaks 30 aastat on ühe tonni transpordi hind karjäärist tehasesse 1,12 eurot/t. Raudtee ehituse hinnaks kujunes 990203 eurot. Raudteetranspordi hinnapakkumise alusel on ühe tonni hind karjäärist tehasesse 1,30 eurot/t. Siinkohal tuleb arvestada raudtee amortisatsiooni ajaks 30 aastat ning raudtee hoolduskulusid. Raudteetranspordi lõpphinnaks koos laadimisega kujunes 1,46 eurot/t. Võrdluse ja analüüsi käigus selgus, et kõige odavam variant on omada kallurautosid ning laadida neid masinaid ettevõtte oma kopplaaduriga. Küll aga autori arvates ei ole selline variant parim. Parimaks variandiks peab autor osta kallurautode teenust sisse ja neid laadida ettevõtte kopplaaduriga. Sellisel juhul oleksid ettevõtet puudutavad riskid maandatud ning ettevõte saab keskenduda oma põhitööle ehk tootmisele ja tootearendusele. Antud järelduste aluseks võttis autor 2015 aasta järsu turumuutuse kui toorme vajadus oli kõigest 500000 tuhat tonni aastas ning 2016 langes see arv veelgi. Sellises olukorras oleks oma autopark üledimensioneeritud ning jooksvad kulud tõuseksid märkimisväärselt seisva autopargi näol. Küll aga sisseostetava teenuse puhul on võimalik kiiresti reageerida turumuutusele, kuna transpordihind on pandud sõltuma toorme kogusest. Sellisel juhul makstakse ainult selle eest, mitu tonni on reaalselt karjäärist tehasesse transporditud.AS Kunda Nordic Tsement is a manufacturing company which main production is cement. For producing cement there are several raw materials needed. One of the raw materials is crushed limestone. At the moment blast limestone is mined from Aru-Lõuna quarry. Due to limestone reserve run out, there is a need for a new quarry. According to geological survey best location for mining limestone is Toolse-Lääne. In Toolse-Lääne quarry the limestone will be mined, loosened and crushed. After all these processes crushed limestone needs to be transported to the factory where it is used for producing cement. At the moment there haven’t been done any calculations for systemical transport solution. The aim of this paper is to find systemical transport solution to transport crushed limestone from quarry to factory. The author investigated different transporting ways and found that possible solutions are: railway transport, tipper truck transport and conveyor transport. To use railway transport there is a need to built two km of railway. To use conveyor mode there is a need to built full conveyor system which is ten km long. For tipper truck transport solution there is no need to built road because it will be built anyway to serve clients and workers. To find the most systemical solution, the author made calculation for each transport mode. Author made three price inquries to identify transport costs. Railway building costs 990203 euros and transport due to offer costs 1,30 euro/t. Final railtransport price is 1,46 euro/t. Conveyor solution building costs 5773167 euros. Final conveyor transport price is 1,12 euro/t. If company buys tipper truck service then price is 1,11 euro/t and if company owns their own tipper trucks then price is 1,07 eurot/t. The result showed that most optimized way is to own seven tipper trucks and one wheel loader. Allthough it is the cheapest way to transport, author doesn’t agree with this kind of result and provides other solution. Author suggestion is that the most reasonable solution is to buy tipper truck service and use companys own wheel loader. The differents between these two solution per year will be 40000 euros total, it is 3,6%. In that way company spreads it’s risks and can focus on producing and merchandising
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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