Authors:A. Sheikhi-Garjan, A. Hosseini-Gharalari, M. Mahjob, M. Rashid, Q. Sabahi, M. Safari, F. Jalilyan and R. Arbabtafti
accuracy and spray coverage evaluation . Appl. Eng. Agric. , 10 , 463 – 470 .
Donskoff , M. ( 1996 ): Prospects for international cooperation of Sunn Pest research and control . FAO Plant Production and Protection Paper, Rome, Italy, No. , 138
in the processing of proprioceptive stimuli, for example, with respect to its accuracy ( 13 ).
A number of methods have been developed to measure various aspects of proprioceptive acuity or accuracy. Concerning the position of the joints, one
There are two components involved in evaluating age by luminescence. One is the equivalent dose determined from luminescence measurements on mineral crystals (usually quartz or feldspar) extracted from the material to be dated. The other is the dose rate to which the crystals have been exposed throughout antiquity. The age is then the ratio (equivalent dose)/(dose rate). Factors which influence the accuracy of the two components, and so the accuracy of the age, are discussed. Limiting factors are identified in order to recognize aspects of measurement on which future development must concentrate to achieve an improvement in accuracy of age determination.
issue recommendations. In “ Checking similarity measures against researchers’ perception of relatedness ” section, we define an evaluation protocol for measuring the accuracy of recommendations according to researchers’ perception. It allows us to assess
An INAA procedure for routine analysis of rock samples is described. Samples are irradiated using a rotating sample holder.
Measurement of the induced gamma activity is performed using an automatic gamma spectrometer and the elemental concentrations
are calculated by a computer. The analytical error is discussed and the precision and accuracy evaluated experimentally. An
average error of ±3–5% without considering counting statistics is obtained. Results for 19 elements in 8 international standard
rocks are reported. A short discussion of the cost of the analysis is included.
Citations in five leading environmental science journals were examined for accuracy. 24.41% of the 2,650 citations checked
were found to contain errors. The largest category of errors was in the author field. Of the five journals Conservation Biology
had the lowest percentage of citations with errors and Climatic Change had the highest. Of the citations with errors that
could be checked in Web of Science, 18.18% of the errors caused a search for the cited article to fail. Citations containing
electronic links had fewer errors than those without.
Authors:Aniko Maraz, Orsolya Király and Zsolt Demetrovics
. , Reitsma , J. B. , Bruns , D. E, Gatsonis , C. A. , Glasziou , P. P. , Irwig , L. M. , Lijmer , J. G. , Moher , D. , Rennie , D. & de Vet , H. C. ( 2003 ). Towards complete and accurate reporting of studies of diagnostic accuracy: The
Authors:F. De Corte, A. Simonits, A. De Wispelaere and J. Hoste
The present paper deals with the accuracy and applicability of the k0-standardization technique in NAA. Topics included are: user-oriented outline of the method, relevant nuclear data (k0, Q0, tc.), the non-1/E epithermal flux distribution, small detector separations and/or extended source geometries, (n, ) reactions with a Westcott-g1, primary interferences, subsequent (interrupted) irradiations, the non-constancy of the neutron flux during irradiation, and a final account of the accuracy. Although the paper is written in terms of the k0-methodology, a good deal of the considerations can be transferred to most types of single-comparator standardization.
The basic assumptions of activation analysis are that the induced radioactivity is proportional to the amount of analyte,
and that the quantity of radioactivity can be related simply to the number of counts observed. Quantitative measurement of
activity (and of its uncertainty) is not always simple, especially when accuracy better than a few percent is sought. Recent
work with 77Ge and 76As has demonstrated that the accuracy of half-lives in the literature is sometimes insufficient. Despite these and other problems,
quantitative understanding and documentation of uncertainties can be accomplished, providing demonstrable quality assurance
and supporting claims of traceability to the Système International.