1,720,956 research outputs found
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
Vegetation Ecology and Land Use/ Land Cover Changes in Selected Afromontane Forests Along Gibe–Omo Watershed, Southwest Ethiopia
No full textThis study was aimed to investigate plant diversity and community analyses of the
Afromontane forests at Tiro Boter Becho (TBB) and Chebera Churchura National Park
(CCNP) and analyze LU/LC changes of the two study areas. Systematic sampling
technique was applied to vegetation and environmental data collection. Vascular plants
encountered in each plot were recorded and identified. In addition, soil samples were
taken from each plot and analyzed for pH, organic matter, cation exchange capacity,
total nitrogen, available phosphorus and texture. Land use land cover changes of the
two study sites were analyzed from the period 1984–2015 using geographic
information system and remote sensing techniques. 204 and 144 plant species were
recorded from TBB and CCNP respectively. Five and four plant communities were
identified at the Afromontane forests of TBB and CCNP respectively. The density of
woody species was 1902 stems.ha–1 in TBB and 1562 stems.ha–1 in CCNP. Whereas,
the Basal area of woody species was 72.98 m2ha–1 in TBB and 73.81 m2ha–1 in CCNP.
Four LU/LC types were identified in TBB and five LU/LC types were identified in
CCNP. In the period of 1984–2000, Forest and Agriculture & Settlement showed
increasing trends in TBB. But Woodland and Shrub/Bushland showed decreasing
trends. In the period 2000–2015, Agriculture & Settlement and Shrub/Bushland showed
increasing trends. But Forest and Woodland showed a remarkable loss. In CCNP,
Forest, Grassland and Agriculture & Settlement showed increasing trends in the period
of 1984–2000. But Woodland and Water body showed decreasing trends. In the period
2000–2015, Agriculture & Settlement, Grassland and Water body showed increasing
trends. Whereas Forest and Woodland showed decreasing trends. A decreasing trend
in vegetation and increasing trend in Agriculture and Settlement is an indication of
high demand of land for cultivation and settlement. Integrated watershed management
approach should be in place to manage the entire watershed. Furthermore, effective
enforcement of forest laws/policies, fair involvement of local communities in forest
management, delineation of the forest buffer zone and improve the use of modern
stoves for efficient energy consumption must be carried out at a local level to ensure
the sustainability of natural forest
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
Clinical profile and outcome of st- segment Elevation myocardial infarction patients presented To jimma university medical center, jimma, Southwest Ethiopia: a two year retrospective study
No full textBackground: ST-segment elevation myocardial infarction (STEMI) is one of the most
deadly kinds of acute coronary syndrome (ACS), accounting for one of the leading causes of
mortality worldwide. STEMI continues to raise internationally, with a major impact on low
and middle-income countries, particularly Africa, due to inadequate healthcare infrastructure
and patients' late presentation. Despite the expansion of the disease magnitude, clinical
profile and outcome of STEMI is not thoroughly investigated in resource constraint settings
like Ethiopia.
Objective: The study was conducted to assess the clinical profile and outcome of patients
presented with ST segment elevation myocardial infarction at JUMC.
Method: A retrospective cross-sectional study design was conducted from STEMI patient’s
medical chart record that fulfill the inclusion criteria using a structured questioner to assess
the clinical profile and outcome at JUMC from November 1, 2022 to December 31, 2024.
The collected data were checked, entered and analyzed using SPSS software version 27 and
P-value less than 0.05 was considered as statistically significant.
Result: A total of 73 patients were diagnosed with STEMI and met the inclusion criteria and
included in the study. The M: F ratio was 3.88:1, with 58 (79.5%) being male. The median
age was 60 years (IQR 45-70). A total of 62 patients out of 73, or 84.9% of the total,
reported having chest pain. The average duration between the onset of symptoms and
hospital presentation was 91.33 hours (3.8 days). Approximately 67 patients (91.8%) had
echocardiography performed and 8.2% of patients had LVEF <30%. Every patient received
dual antiplatelet (aspirin and clopidogrel), and 12.3% of patients received thrombolytic
therapy. The in-hospital mortality was 13.7%. Predictors of in hospital mortality in JUMC
were killip class (P=0.016) and major arrhythmias (P=0.04).
Conclusion: The medical management of patients with STEMI was in accordance with
international guidelines, even though only nine patients received thrombolytic and none
received PCI. STEMI patients have a delayed presentation to the hospital from the onset of
symptoms, and their risk profiles are comparable to those of the developed world, but their
mortality rates are higher. Having an arrhythmia and higher killip class were found to be
independent predictors of in-hospital mortality at Jimma University Medical Cente
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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