1,720,970 research outputs found
Plan upravljanja istraživačkim podacima - Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524)
No full textPlan upravljanja istraživačkim podacima za istraživački projekt Hrvatske zaklade za znanost: Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524), za 2. projektno razdoblje (01.02.2022. - 30.06.2023.)
Morfologija i filogenija pikoeukariota i penatnih planktonskih dijatomeja u srednjem i južnom Jadranu
Full text linkThe smallest protists, generally called picoeukaryotes, and planktonic pennate diatoms have received limited attention in world oceans, although they are numerous and important for primary production, biogeochemical cycles and for carbon injection into the deep ocean. In this thesis, represented through seven scientific publications, cultivated planktonic pennate diatoms and picoeukaryotes were investigated with traditional methods (light and electron microscopy, morphometry) and with molecular analyses, including multi-gene phylogenies, and were identified as genera Entomoneis, Pseudo-nitzschia, Haslea and Picochlorum. Detailed investigations of genus Entomoneis resulted with description of seven new species. General picoeukaryotic diversity was addressed by eDNA amplicon sequencing V4 variable region of nuclear 18S rRNA gene. Obtained results identified 95% of the picoeukaryotic community as hetero- or mixotrophic, mostly belonging to parasitic dinoflagellates and radiolarians, while only 5% of the community was represented with photoautotrophic picoeukaryotes belonging to classes of green algae, haptophytes, stramenopiles and cryptophytes. One cultivated Picochlorum sp. strain was subjected to growth rate experiment and pigment and lipid analyses, resulting in interesting and promising data for future biotechnological studies.Najmanji protisti, poznati kao pikoeukarioti i penatne planktonske diatomeje često su zanemareni u istraživanjima svjetskih oceana, iako predstavljaju brojnu i važnu komponentu za primarne proizvodnje, biogeokemijskih ciklusa i značajni su za protok ugljika u duboki ocean. U sklopu ove disertacije kroz sedam znanstvenih publikacija navedene skupine organizama istraživane su tradicionalnim metodama (svjetlosna i elektronska mikroskopija, morfometrija) i molekularnim analizama koje uključuju filogenetske anlize sa više različitih genskih markera te su identificirane kao rodovi Entomoneis, Pseudo-nitzschia, Haslea i Picochlorum. Detaljna analiza roda Entomoneis rezultirala je opisom sedam novih vrsta za znanost. Bioraznolikost ukupne pikoeukariotske zajednice u južnom Jadranu odredila se sekvenciranjem amplikona okolišne DNA i to prema varijabilnoj V4 regiji nuklearnog 18S rRNA gena. Dobiveni rezultati identificirali su 95% pikoeukariotske zajednice kao hetero- ili miksotrofne organizme, većim dijelom pripadajući parazitskim dinoflagelatima i radiolarijama, dok je samo 5% zajednice zastupljeno fotoautotrofnim pikoeukariotima koji pripadaju razredima zelenih algi, haptofita, stramenopila i kriptofita. Jedan kultivirani soj alge Picochlorum sp. istražen je kroz eksperiment određivanja brzine rasta te analizama pigmenta i lipida, što je rezultiralo zanimljivim i obećavajućim rezultatima koji mogu poslužiti kao okosnica za buduće biotehnološke studije
Uloga međujezičnih utjecaja u ovladavanju slovačkim kao stranim jezikom
Full text linkCilj ovog rada je prikazati i istraživanjem ispitati koliko hrvatski kao materinski jezik (J1) ima učinak i utjecaj na ovladavanje slovačkim kao stranim jezikom (J2). Uz pomoć kontrastivne analize, analize pogrešaka i same klasifikacije učeničkih pogrešaka analizirale su se pogreške koje su studenti na početnim stupnjevima učenja slovačkog jezika i književnosti pravili te su se ustvrdili čimbenici koji izazivaju njihov nastanak i naposljetku interferenciju među ova dva srodna jezika. Cilj analize pogrešaka jest ukazati na učestalost učeničkih pogrešaka i samim time dati prijedloge za poboljšanje nastave slovačkog jezika. U radu su istaknuti i čimbenici koji utječu na ovladavanje nekim stranim jezikom te znanstvene metode usvajanja stranih jezika.Cieľom tejto práce je preskúmať a následne poukázať na vplyv chorvátskeho jazyka ako materinského jazyka (J1) na ovládanie slovenského jazyka ako cudzieho jazyka (J2). Pomocou kontrastívnej analýzy, analýzy chýb a klasifikovania chýb študentov boli analyzované chyby, ktoré vznikajú pri používaní jazyka u študentov v počiatočnej fáze výučby predmetu slovenský jazyk a literatúra. Následne boli analyzované faktory spôsobujúce vznik chýb, ale aj rozdiely medzi týmito dvoma príbuznými jazykmi. Cieľom analýzy chýb je poukázať na chyby, ktoré študenti opakovane robia, a v súsvislosti s tým predložiť návrhy na zvýšenie kvality učebného procesu pri ovládaní slovenského jazyka. Práca sa venuje aj faktorom, ktoré ovplyvňujú ovládanie cudzieho jazyka, ako aj vedeckým metódam pre osvojenie si cudzieho jazyka
Plan upravljanja istraživačkim podacima - Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524)
No full textPlan upravljanja istraživačkim podacima za istraživački projekt Hrvatske zaklade za znanost: Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524), za 2. projektno razdoblje (01.02.2022. - 30.06.2023.)
Plan upravljanja istraživačkim podacima - Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524)
No full textPlan upravljanja istraživačkim podacima za istraživački projekt Hrvatske zaklade za znanost: Utjecaj valova vezanih uz otok na primarnu produkciju - ISLAND (IP-2020-02-9524), za 3. projektno razdoblje (01.07.2023. - 24.06.2025.)
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
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