BACKGROUND We report our results for the systematic recording of all errors in a standard clinical laboratory over a 1-year period. METHODS Recording was performed using a commercial database program. All individuals in the laboratory were allowed to report errors. The testing processes were classified according to function, and errors were classified as pre-analytical, analytical, post-analy...

BACKGROUND Quality management systems should cover all the steps involved in the overall testing and non-testing processes. AIM To identify quality indicators for extra-analytical processes in the clinical laboratory and to specify acceptability limits, in order to provide a useful tool for continuous improvement of laboratory service. METHODS A literature review by Medline search was perfo...

In the context of adaptive DS-CDMA transmissions, we study average performance of a link adaptation based on the maximization of the minimum information rate subject to a target bit error rate for erroneous frames. Analytical expressions and bounds are derived when Rayleigh fading environment is assumed. Results are also compared to a link adaptation strategy based on the total throughput maxim...

The error of measuring the total interaction coefficients of turbid media using collimated light transmission was estimated with an analytical expression, which was verified with accurate Monte Carlo simulations. The expression is based on the Henyey-Greenstein phase function of scattering and the probabilities of non-scattered and singly scattered photons transmitted through a tissue slab with...

Microprobe monazite dating has been increasingly used to constrain the timing of deformation and metamorphism because of the potential to date very small monazite domains (down to 5 Am or less) in structural and petrologic context. This paper presents an analytical strategy, presentation format, and error considerations for microprobe monazite dating. The strategy involves highresolution compos...

Codeword-stabilized codes are a general class of quantum codes that includes stabilizer codes and many families of nonadditive codes with good parameters. For such a nonadditive code correcting all t-qubit errors, we propose an algorithm that employs a single measurement to test all errors located on a given set of t qubits. Compared with exhaustive error screening, this reduces the total numbe...

Approximate query processing is often based on analytical methodologies able to provide fast responses to queries. As a counterpart, the approximate answers are affected with a small quantity of error. Nowadays, these techniques are being exploited in data warehousing environments, because the queries devoted to extract information involve high-cardinality relations and, therefore, require a hi...