1,720,967 research outputs found
Review of the University Textbook Entitled “Energy Geographic and Energy Planning” by Béla Munkácsy
Full text linkThe open-source academic book, titled “Energy geographic and energy planning”, contains a mixture of research and teaching, moreover practical experiences of the author. The book focuses the transfer of factual knowledge as well as the synthesis of state-of-the-art knowledge, outline of the scientifically well-established links and environmentally conscious approach. Even though it has been created for university students originally, it can be useful for the younger generation and their teachers, too. The philosophy of the text and drawings provide good foundation to teach geography in a brand-new way
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
A hypovolaemia és oxidatív stressz vizsgálata égési sérülést szenvedett betegek körében = Hypovolaemy and oxidative stress in burned patients
No full textAz égésbetegség ellátásában a nagyfokú ödémaképződést kísérő hypovolaemia megfelelő kezelése jelenleg is kulcsfontossággal bír. Az ödémaképződés hátterében többek között az oxidatív stressz is fontos szerepet játszik.
Célkitűzésünk
annak vizsgálata volt, hogy a különböző folyadékpótlási sémák hogyan adaptálhatók jobban az egyes betegekhez, ezek alkalmazása befolyásolja-e a beteg szervfunkcióit és az égést kísérő oxidatív stresszt. Vizsgáltuk továbbá az oxidatív stressz és az égés kiterjedése közötti összefüggést.
Módszer:
Vizsgálatainkat intenzív osztályunkra felvett betegeken végeztük, akiknél az osztályos folyadékpótlási protokollt 3 órán belül el tudtuk kezdeni. Hemodinamikai mérésekhez transpulmonalis thermodilutiós technikát alkalmaztunk. Az oxidatív stressz nyomon követésére felvételkor, majd az ezt követő 5 napon keresztül a betegek véréből meghatároztuk a fehérvérsejtszámot, a fehérvérsejtek arányának alakulását, a malondialdehid, plazmaszulfhidril-csoportok, redukált glutation szintjét, a mieloperoxidáz, kataláz, szuperoxid dizmutáz enzimek aktivitását. Mértük továbbá a leukocyták szabadgyök-termelését.
Eredmények:
Betegeink szignifikánsan több folyadékot kaptak, mint amit a Parkland-formula előre jelzett (p < 0,05). Az invazív hemodinamikai paraméterek alapján vezetett folyadékterápia mellett az ScvO
2
szignifikánsan magasabb (p < 0,05), míg a szervfunkciós pontszám alacsonyabb volt az óradiuresis alapján resuscitált csoportnál (p < 0,05). A hemodinamikai paraméterek alapján kezelt betegek esetében a granulocyták aránya (p < 0,05), a gyöktermelés maximuma (p < 0,05) szignifikánsan magasabb, a gyöktermelés késése alacsonyabb (p < 0,05) volt.
Következtetések:
Korrekciós faktorok alkalmazásával a Parkland-formula pontosabbá tehető, de a legjobb eredményt az invazív hemodinamika alapján vezetett folyadékterápia biztosítja. Ez elsősorban a prooxidáns státust befolyásolja kedvezően.
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Adequate treatment of the developing hypovolaemy caused by marked oedema formation plays a key role in the care of burned patients. Oxidative stress may be an underlying cause of the excessive oedema formation. The
aim
of the study was to asses how can different resuscitation schemata be adapted better to the requirement of each individual patient. Effect of the use of different schemata on organ-function and developing oxidative stress and correlation between the extent of burn and oxidative stress has also been studied.
Methods:
Patients admitted to our level one intensive ward were involved in the study. Inclusion criterion was the start of our fluid resuscitation schema at least 3 hours after injury. Hemodynamic measurements were performed by transpulmonary thermodilution technique. Blood samples were taken on admission and on the 5 consecutive days thereafter. White blood cell count of the patients, the percentage of granulocytes, lymphocytes and monocytes, the levels of malondialdehyde, protein sulfhydril groups in plasma, reduced gluthation, catalase, and superoxide dismutase enzyme activities, and phorbol-mystrate-acetate induced free radical generating capacity were assessed.
Results:
Significantly more fluid was administered than predicted by the Parkland formula (p < 0.05). Patients in whom fluid resuscitation was guided by invasive hemodynamic parameters ScvO
2
was significantly higher (p < 0.05), multi organ dysfunction scores were lower (p < 0.05) than in the hourly urine output group. Patients whom fluid resuscitation was guided by invasive hemodynamic parameters relative number of the granulocytes and maximal rate of reactive oxygen species production (p < 0.05) were significantly higher (p < 0.05), the lag phases were significantly shorter (p < 0.05).
Conclusions:
With the use of correction factors the Parkland formula can be more precise, still, fluid resuscitation guided by invasive hemodynamic measurements can provide the best results. The type of fluid resuscitation schema influences mainly the pro-oxidant system
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
A Nestlé Nutrition küldetése: segíteni az embereknek, hogy egészségesebben és tovább éljenek
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