177,661 research outputs found
Anaesthesia Management for Awake Craniotomy: Systematic Review and Meta-Analysis
No full textBackground
Awake craniotomy (AC) renders an expanded role in functional neurosurgery. Yet, evidence
for optimal anaesthesia management remains limited. We aimed to summarise the latest
clinical evidence of AC anaesthesia management and explore the relationship of AC fail ures on the used anaesthesia techniques.
Methods
Two authors performed independently a systematic search of English articles in PubMed
and EMBASE database 1/2007-12/2015. Search included randomised controlled trials
(RCTs), observational trials, and case reports (n>4 cases), which reported anaesthetic
approach for AC and at least one of our pre-specified outcomes: intraoperative seizures,
hypoxia, arterial hypertension, nausea and vomiting, neurological dysfunction, conversion
into general anaesthesia and failure of AC. Random effects meta-analysis was used to esti mate event rates for four outcomes. Relationship with anaesthesia technique was explored
using logistic meta-regression, calculating the odds ratios (OR) and 95% confidence inter vals [95%CI].
Results
We have included forty-seven studies. Eighteen r
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
New floristic records in the Balkans: 1
No full textUdgivelsesdato: April 2006New chorological data are presented for 95 species and subspecies from Albania (report no. 80), Bosnia &Herzegovina (70, 82), Bulgaria (15-30, 72-75, 83-95), Greece (1-14, 31-69), and Serbia & Montenegro (70,71, 76-79, 81, 82). The taxa belong to the following families: Amaranthaceae (2, 15, 16), Amaryllidaceae(38), Apiaceae (17, 18, 47, 80, 83, 84), Asclepiadaceae (85), Asteraceae (29, 31, 86-91), Brassicaceae(3, 48, 70), Campanulaceae (49, 71, 76), Cannabaceae (72), Caprifoliaceae (4), Caryophyllaceae (19,20, 32, 33, 50-52), Chenopodiaceae (5), Cyperaceae (28, 78), Dipsacaceae (34, 53, 54), Fabaceae (6-8, 21, 22, 55, 69), Guttiferae (56), Iridaceae (39-41), Juncaceae (13), Lamiaceae (57-61), Liliaceae (42-46, 68), Linaceae (62), Ophioglossaceae (1), Orchidaceae (94), Orobanchaceae (63), Papaveraceae (92),Plantaginaceae (9), Poaceae (79, 95), Polygonaceae (93), Ranunculaceae (14, 23, 24, 35), Rhamnaceae(9), (79, 95), (93), (14, 23, 24, 35), (64), Rosaceae (65), Rubiaceae (66), Scrophulariaceae (25, 26, 36, 73, 77, 81), Solanaceae (10, 11, 74),Thymelaeaceae (30, 67, 82), Valerianaceae (37), Verbenaceae (12), Violaceae (27) and Vitaceae (75).(30, 67, 82), (37), (12), (27) and (75).First reports for countries are: Albania - Eryngium serbicum (80), Bulgaria - Parthenocissus quinquefolia (75), Greece - Gonocytisus dirmilensis (69), Littorella uniflora (9) and Verbena aristigera(75), Greece - (69), (9) and (12); Serbia & Montenegro - Campanula moravica (76), Daphne malyana (82), Lindernia dubia(77) and Poa timoleontis (79). Gonocytisus dirmilensis and Verbena aristigera are new for Europe.The publication includes contributions by B. Biel & Kit Tan (1-13), N. Böhling (14), D. Dimitrov & V.Vutov (15-28), R. Dimova & V. Vladimirov (29-30), Kit Tan & G. Vold (31-46), Kit Tan, G. Vold, G. Iatrou &G. Sfikas (47-68), Kit Tan, M. Vural & A. Strid (69), D. Lakušic & V. Stevanovic (70-71), A. Petrova (72-75),V. Randelovic, B. Zlatkovic, N. Randelovic & M. Juškovic (76-79), V. Stevanovic & S. Vukoijicic (80-81), V.Stevanovic & B. Zlatkovic (82) and V. Vladimirov (83-95).</p
Effect of atmospheric ageing on volatility and ROS of biodiesel exhaust nano-particles
No full textGenerally, the magnitude of pollutant emissions from diesel engines is ultimately coupled to the structure of fuel molecules. The presence of oxygen, level of unsaturation and the carbon chain length of respective molecules influence the combustion chemistry. It is speculated that increased oxygen content in the fuel may lead to the increased oxidative potential (Stevanovic, S. 2013). Also, upon the exposure to UV and ozone in the atmosphere, the chemical composition of the exhaust is changed. The presence of an oxidant and UV is triggering the cascade of photochemical reactions as well as the partitioning of semi-volatile compounds between the gas and particle phase. To gain an insight into the relationship between the molecular structures of the esters, their volatile organic content and the potential toxicity of diesel exhaust particulate matter, measurements were conducted on a modern common rail diesel engine. This research also investigates the contribution of atmospheric conditions on the transfer of semi-volatile fraction of diesel exhaust from the gas phase to the particle phase and the extent to which semi-volatile compounds (SVOCs) are related to the oxidative potential, expressed through the concentration of reactive oxygen species (ROS) (Stevanovic, S. 2013)..
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
MATLAB/Octave Implementation of Recommendation ITU-R P.1812
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.1812-5 with a path-specific propagation prediction method for point-to-area terrestrial services in the frequency range 30 MHz to 3000 MHz.
This version of the code corresponds to the reference version of the code approved by ITU-R Working Party 3K and published on ITU-R SG 3 Software, Data, and Validation Web Page as digital supplement to Recommendation ITU-R P.1812-5
MATLAB/Octave Implementation of Recommendation ITU-R P.452
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.452-16 with a prediction procedure for the evaluation of interference between stations on the surface of the Earth at frequencies above about 0.1 GHz.
This version of the code corresponds to the reference version approved by ITU-R Working Party 3M and published on ITU-R SG 3 Software, Data, and Validation Web Page as a digital supplement to Recommendation ITU-R P.452-16
MATLAB/Octave Implementation of Recommendation ITU-R P.1546
No full textMATLAB/Octave software implementation of Recommendation ITU-R P.1546-6 with a method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 4000 MHz.
This version of the code corresponds to the reference version of the code approved by ITU-R Working Party 3K and published on ITU-R SG 3 Software, Data, and Validation Web Page as digital supplement to Recommendation ITU-R P.1546
Letter from R. R. Zellick, Assistant Trust Officer, Anglo California National Bank of San Francisco, to Joseph R. Goodman, October 2, 1942
No full textLetter from R. R. Zellick, Assistant Trust Officer at The Anglo California National Bank of San Francisco, to Joseph R. Goodman, regarding property owned by Dave Tatsuno. Zellick mentions a dispute between current tenants and Tatsuno, and that Tatsuno has asked Goodman to help locate trustworthy tenants.Personal correspondence, organizational records, government documents, publications, and other papers created or collected by Joseph R. Goodman documenting the forced removal and incarceration of Japanese Americans during World War II, as well as organized resistance to incarceration. Included in the collection are records of the Japanese Young Men's Christian Association and the Japanese American Citizens' League in San Francisco, including papers of the Japanese YMCA's executive secretary Lincoln Kanai; Sakai family papers; Goodman's correspondence to and from Japanese American incarcerees, organizations opposing forced removal and incarceration of Japanese Americans, the War Relocation Authority, and others; publications, photographs, and ephemera from the Topaz Relocation Center, where Goodman taught high school; War Relocation Authority records and publications; and newspaper clippings, pamphlets, and reports about forced removal and incarceration created by various government, religious, and civic organizations, in California and nationwide
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