1. Statistical principles, quality system standards, six sigma, service 2. Charts, graphs, sampled data as foundational statistical tools 3. Attribute charting systems 4. The P chart steps for constructing attribute data 5. Attributes, checklists and charting 6. SPC, X-bar and R, variable charting 7. Cp and Cpk definitions and capability 8. Quality characteristic foundations, changing relations...

clinical laboratory results play an important role in helping physicians in diagnosis and treatment. in view of the direct effect of the working methods on the quality of data in the laboratory, quality control of data and results in the biochemistry ward of laboratory includes taking into account all the factors and variables relating to all the pre-analytical, analytical and post-analytical s...

in this paper, first the available single charting methods, which have been proposed to detect simultaneous shifts in a single process mean and variance, are reviewed. then, by designing proper simulation studies these methods are evaluated in terms of in-control and out-ofcontrol average run length criteria (arl). the results of these simulation experiments show that the ewma and ewms methods ...

background evaluation of the accuracy and performance of sonography units needs tissue-mimicking phantoms. these phantoms play an important role by simulating soft tissues, obviating the need to experiment on humans or animals. objectives to present a simple sonographic phantom for quality control and training purposes. materials and methods the presented phantom consists of a two-part plexigla...

a simple inexpensive con!nuous quality control method, by means of eight basic blood coun!ng parameters, obtained from automated hematology analyzers, using pa!ent samples, is described. a few samples with low, normal and high values were selected and introduced to the instrument early in the morning as the first count, the results of which are plo#ed on the appropriate chart as dots. the same ...

Auditing provides essential security control in computer systems by keeping track of all access attempts, including both legitimate and illegal attempts. This phase can be useful the context audits, where eventual misbehaving parties held accountable. Blockchain technology provide trusted auditability required for systems. In this paper, we propose a distributed Attribute-Based Access Control (...