1,720,954 research outputs found
Analysis of utilization heat energy from a cogeneration plant
No full textCilj rada je analiza i mogućnosti iskorištenja otpadne energije radi povećanja iskoristivost
kogeneracijskog postrojenja. Analiza iskorištenja toplinske energije je izrađena na kogeneraciji
„Spin Valis“ koja se nalazi u Požegi. Problem kogeneracije je stvaranje velike količine
proizvedene otpadne topline koja se predaje hladnjacima a zatim okolini. Analiza je pokazala da
je najveća količina neiskorištene topline u ljetnim mjesecima dok je u zimskom periodu ta toplina
manja.
Iskorištenjem otpadne topline smanjile bi se količine emisije stakleničkih plinova,
buduće se ne bih koristili drugi energetski energenti. Uz to smanjenje stakleničkih emisija ostvarila
bih se i financijska ušteda jer bi se koristila otpadna toplina umjesto drugih energenata. Načini na
koji bi se mogla iskoristiti otpadna toplina: grijanje stambenih zgrada, kućanstava i poslovnih
prostora s toplinskim podstanicama, korištenje u sušarama pri sušenju, grijanju plastenika. Osim
što se toplinska energija može iskoristiti za grijanje također se može iskoristiti i za hlađenje pri
korištenju apsorpcijskih dizalica topline.The paper aims to emphasize the possibilities of using waste energy to increase the
efficiency of cogeneration. The analysis of thermal energy utilization was made at the cogeneration
"Spin Wallis" located in Požega. The problem of cogeneration is the creation of a large amount of
waste heat produced which is transferred to the coolers and then to the environment. The analysis
showed that the largest amount of unused heat is in the summer months, while in the winter that
heat is lower.
When heat would be used there would be an energy reduction in greenhouse gases,
because there would not be no needs for using other energy sources. In addition to reducing
greenhouse gas emissions, financial savings would be achieved because waste heat would be used
instead of other energy sources. Ways in which waste heat could be used: heating of residential
buildings, households and business premises with thermal substations, use in dryers during drying,
heating of greenhouses. Apart from the fact that thermal energy can be used for heating, it can also
be used for cooling when using an absorption heat pump
Design, 3D model and calculation of machine for extracting vegetables
No full textU ovom radu željelo se konstruirati te proračunati stroj za vađenje povrća koji će biti efikasan, jednostavan za održavanje i koji ne zahtjeva kompliciranu tehnološku izradu. Prilikom modeliranja, nastojalo se izbjeći komplicirano modeliranje radi jednostavnije tehnološke izrade i manje cijene izrade. Zbog toga je stroj namijenjen malim i srednjim poljoprivrednicima kojima je cijena prihvatljiva.
Model je konstruiran prema određenim zahtjevima i željama. Različiti proračuni i analize rađene su na konstrukciji i dijelovima stroja radi provjere sigurnosti.
Prilikom izrade analize najviše se obratila pozornost na samu konstrukciju, jer ako konstrukcija ne izdrži zadana opterećenja sama funkcionalnost i primjena stroja propada.In this work it was wanted to construct and calculate machine for extracting vegetables that is efficient, simple for maintenance and which does not demands complicated technological production. While designing, it was demand to avoid complicated designing because of simpler technological production and lower prices. Because of that machine is intended for small and middle farmers whom price is acceptable.
Model is constructed by certain demands and wishes. Different calculations and analysis where made on construction and parts of machine for checks on safety.
While making analysis most attention was addressed to frame, because if construction does not submit certain load then functionality and use of machine fail
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
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
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
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