Results 291 to 300 of about 516,287 (323)
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Comments on the observability of coronal variations
Solar Physics, 1988The observable variability of spectral lines in the soft X-ray and XUV region is discussed. Rapid variability of coronal emission, both in flaring and non-flaring structures, has been reported and is particularly prominent when high spatial resolution is available.
Leon Golub +3 more
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Observer Variation in Bronchographic Diagnosis
The British Journal of Radiology, 1958Observer variation* in the interpretation of chest radiographs has been estimated by a number of workers (Birkelo, Chamberlain, Phelps, Schools, Zacks and Yerushalmy, 1947; Cochrane and Garland, 1952; Fletcher and Oldham, 1949; Garland, 1949; Springett, 1956; Stradling and Johnston, 1953; Yerushalmy, Harkness, Cope and Kennedy, 1950; Yerushalmy ...
Peter Stradling, Bryan Gandevia
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Observer Variation in Abdominal CT
Investigative Radiology, 1984Observer performance in radiologic interpretation has traditionally been based upon Receiver Operating Characteristic (ROC) analysis. A statistical method that evaluates the reproducibility or consistency of radiologic interpretation is presented. Since this method is not based upon pathologic verification, it cannot be used to assess accuracy of ...
Ivan F. Majesky +3 more
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Observer variation in skeletal radiology
Skeletal Radiology, 1983The factors that affect observer variation in bone radiology are analysed from data in the literature and on the basis of studies carried out at McMaster University on the hands and sacroiliac joints. A plea is made for presenting results in terms of Kappa statistics so that agreement due purely to chance is eliminated.
W M Park, W P Cockshott
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Observations of Irradiance Variations
Space Science Reviews, 2000Since November 1978 a complete set of total solar irradiance (TSI) measurements from space is available, yielding a time series of 21 years. From measurements made by different space radiometers (HF on NIMBUS-7, ACRIM I on SMM, ACRIM II on UARS and VIRGO on SOHO) a composite record of TSI can be compiled.
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Observer variation in the assessment of resin composite
Dental Materials, 1998The aim of this study was to compare the type of information obtained from log-linear modelling vs Cohen's kappa statistics on observer variation in the assessment of marginal adaptation in composite inlays and amalgam restorations.Marginal adaptation of Class II resin composite inlays and amalgam restorations was clinically assessed by two observers ...
Tobi, H. +3 more
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Intra‐observer and inter‐observer variation of Hertel exophthalmometry
Ophthalmic and Physiological Optics, 2009AbstractPurpose: This study investigated the intra‐observer and inter‐observer variation of Hertel exophthalmometry.Methods: Seventy normal Chinese adults had bilateral exophthalmometry performed by two examiners. The two examiners were masked to the measurement results.
Andrew K. C. Lam +3 more
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Inter-observer and intra-observer variation in bone histomorphometry
Calcified Tissue International, 1986Inter-observer variation has been examined for a number of histomorphometric indices in 20 normal human iliac crest biopsies. Quantitation was performed using an eye-piece graticule and eye-piece micrometer. The same sections were examined by two observers and the methodology was identical. Intra-observer variation was also assessed.
S. Vedi, J E Compston, A. J. Stellon
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Observed variations of monopile foundation stiffness
2015The soil-structure stiffness of monopile foundations for offshore wind turbines has a high impact on the fatigue loading during normal operating conditions. Thus, a robust design must consider the evolution of pile-soil stiffness over the lifetime of the wind farm.
Kallehave, Dan +2 more
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Laser Resurfacing: Observations and Variations
International Journal of Cosmetic Surgery and Aesthetic Dermatology, 2000Laser resurfacing has become increasingly popular among cosmetic surgeons and the public during the last decade. Numerous brands and types of lasers are available. Countless choices of postsurgical wound care methods and mechanisms are available. New technology and variable practice patterns have resulted in less standardized care.
Paul J. Weber +2 more
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