scholarly journals The Basic Concepts of Quality Control Reference: Interval Studies, Diagnostic Efficiency, and Method Evaluation in Quality Control

2018 ◽  
Author(s):  
Ayed Dera
Keyword(s):  
Quality Control ◽  
Reference Interval ◽  
Diagnostic Efficiency ◽  
Method Evaluation ◽  
Basic Concepts

Alternative method evaluation of internal quality control in the Clinical Laboratory of Pontifical Catholic University of Goiás

2018 ◽  
Vol 50 (1) ◽  
Author(s):  
Fernando de Almeida Dias ◽  
Kassya Lopes Epaminondas Martins ◽  
Sérgio Henrique Nascente Costa
Keyword(s):  
Quality Control ◽  
Clinical Laboratory ◽  
Internal Quality Control ◽  
Internal Quality ◽  
Method Evaluation ◽  
Catholic University ◽  
Alternative Method

The role of precision in determining the performance of a thyrotropin assay in diagnosing hyperthyroidism.

1988 ◽  
Vol 34 (7) ◽  
pp. 1464-1467 ◽  
Author(s):  
T J Wilke ◽  
D J Utley
Keyword(s):  
Lower Limit ◽  
Diagnostic Performance ◽  
Reference Interval ◽  
Major Determinant ◽  
Analytical Sensitivity ◽  
Diagnostic Efficiency ◽  
Immunometric Assay ◽  
Coefficients Of Variations ◽  
The Relationship

Abstract We examined the relationship between analytical sensitivity, precision at the lower limit of the reference interval, and diagnostic performance in hyperthyroidism for one radioimmunoassay and five immunometric assay kits for thyrotropin. The analytical sensitivity of these kits extended from 0.05 to 1.56 milli-int. units/L. Diagnostic efficiencies of the immunometric assays, in discriminating between euthyroidism and hyperthyroidism, ranged between 93% and 98%. There was a highly significant correlation (r = 0.99, P less than 0.001) between analytical sensitivity and diagnostic efficiency. The between-assay coefficients of variations, at the lower limit of the reference interval, ranged from 26% to 87%. There was no correlation (r = 0.36) between precision, at this concentration, and diagnostic efficiency. We conclude that analytical sensitivity and not precision is the major determinant in controlling the diagnostic performance of a thyrotropin assay in hyperthyroidism.

SOME BASIC CONCEPTS OF QUALITY CONTROL∗

1998 ◽  
Vol 10 (4) ◽  
pp. 697-699
Author(s):  
George D. Edwards
Keyword(s):  
Quality Control ◽  
Basic Concepts

Differential equations

2020 ◽  
Author(s):  
Galina Zhukova
Keyword(s):  
Quality Control ◽  
Differential Equations ◽  
Ordinary Differential Equations ◽  
Boundary Value Problems ◽  
Stability Theory ◽  
Arbitrary Order ◽  
Educational Institutions ◽  
Course Material ◽  
The Subject ◽  
Basic Concepts

The textbook presents the theory of ordinary differential equations constituting the subject of the discipline "Differential equations". Studied topics: differential equations of first, second, arbitrary order; differential equations; integration of initial and boundary value problems; stability theory of solutions of differential equations and systems. Introduced the basic concepts, proven properties of differential equations and systems. The article presents methods of analysis and solutions. We consider the applications of the obtained results, which are illustrated on a large number of specific tasks. For independent quality control mastering the course material suggested test questions on the theory, exercises and tasks. It is recommended that teachers, postgraduates and students of higher educational institutions, studying differential equations and their applications.

A Single Students' Experience for Visualizing Completely a Semester Subject

2016 ◽  
Vol 853 ◽  
pp. 1-6
Author(s):  
Álvaro Gómez-Parra ◽  
J. Salguero ◽  
Moisés Batista ◽  
P. Mayuet ◽  
Miguel Álvarez ◽  
...  
Keyword(s):  
Material Processing ◽  
Quality Control ◽  
Teaching Experience ◽  
Process Performance ◽  
Innovative Teaching ◽  
Material Processing Technology ◽  
Knowledge Area ◽  
The Subject ◽  
Basic Concepts ◽  
Manufacturing Engineering

Manufacturing Engineering Processes Knowledge Area has developed an innovative teaching experience in order to give, only in one session, a complete view of a basic subject, Manufacturing Engineering. This experience has been developed on the basis of making a cube constructed in card by groups of students. Starting from this, the different steps of a manufacturing process have been identified, as well as the necessity of establishing a quality control for any of them. Moreover, the different material processing technology types have been distinguished, the concept of process performance has been introduced and the different possibilities for sequential and/or parallel processing have been analyzed. On the basis of this, the students have built the topics program of the subject, justifying its competences distribution. In the same way, the students have defined the related basic concepts. At the end of the course, a questionnaire containing the basic cognitive concepts was answered by them, 100% successfully.

scholarly journals Appraisal of the domestic kit «MICMICRO » for antimicrobial susceptibility testing by serial microdilution method

2020 ◽  
pp. 231-236
Author(s):  
Anna A. Samoilova ◽  
L.A. Kraeva ◽  
I.V. Likhachev ◽  
E.V. Rogacheva ◽  
V.N. Verbov ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Quality Control ◽  
Susceptibility Testing ◽  
New Technologies ◽  
Clinical Laboratory ◽  
Clinical Isolates ◽  
Internal Quality ◽  
Diagnostic Efficiency ◽  
Microdilution Method ◽  
Reference Strains

Objective. To assess efficiency of the “MIC-MICRO” kit developed in the Department of New Technologies of the Saint-Petersburg Pasteur Institute, on reference strains and clinical bacterial isolates. Materials and Methods. In order to assess the “MIC-MICRO” kit, several options of its execution were used, including different groups of antibiotics: aztreonam, amikacin, gentamicin, colistin, meropenem, nitrofurantoin, chloramphenicol, cefotaxime, ceftriaxone, ciprofloxacin, erythromycin. In order to determine the range of antibiotic values, the EUCAST-2020 database was used. The quality control of adsorbed antibiotics was carried out using reference strains: Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 29213 and Escherichia coli NCTC 13846 (colistin-resistant). Acceptable and target ranges of MIC values for control strains are evaluated according to “Regular and extended internal quality control for determining MIC and disk diffusion according to EUCAST recommendations” (v10.0). A total of 28 clinical isolates of K. pneumoniae obtained from patients with nosocomial infections in St. Petersburg hospitals in 2018–2019 was used in the study. The coordination of test results was obtained in accordance with GOST R ISO 20776-1-2010. Susceptibility testing results were interpreted in accordance with EUCAST recommendations (v10.0). Results. The MIC values in relation to the reference strains obtained using the “MIC-MICRO” kit were determined in the range of recommended values of the EUCAST-2020 standard. The results obtained in relation to clinical isolates of K. pneumoniae showed that the sensitivity categories determined using the developed kit and the serial microdilution method were the same for all the studied strains. The percentage of colistin-resistant isolates (MIC > 2 mg/ml) in the serial microdilution method and determined using the “MIC-MICRO” kit was 35.7%. The percentage of susceptible strains was also similar for two types of methods (64.3%). Conclusions. Colistin susceptibility testing of K. pneumoniae strains using the “MIC-MICRO” diagnostic kit and the reference serial microdilution method in a tablet, showed comparable results. Diagnostic efficiency, ease to use and simple interpretation of results make it possible to use the developed “MIC-MICRO” kit in clinical laboratory practice.

Preschool education

2022 ◽  
Author(s):  
Sergeevna Irina
Keyword(s):  
Quality Control ◽  
Preschool Children ◽  
Developmental Disabilities ◽  
Child Development ◽  
Preschool Education ◽  
History Of ◽  
Basic Concepts ◽  
Specialty Program ◽  
Children With Developmental Disabilities

The purpose of the textbook is to form a circle of basic concepts included in the topic of preschool education, to give an overview of the existing features of working with preschool children for future employees of this field of education. The history of the development of preschool pedagogy abroad and in our country is described in detail, the calendar of child development is given, the issues of the specifics of working with children with developmental disabilities are considered, recommendations are given on the organization of various activities within the framework of the work, and attention is paid to the issues of quality control of preschool education. It is addressed to students studying under the specialty program 44.02.01 "Preschool education".

The mathematical analysis. Volume 2

2020 ◽  
Author(s):  
Galina Zhukova ◽  
Margarita Rushaylo
Keyword(s):  
Field Theory ◽  
Quality Control ◽  
Fourier Series ◽  
Mathematical Analysis ◽  
Differential Calculus ◽  
Analytic Geometry ◽  
Postgraduate Students ◽  
Several Variables ◽  
Basic Concepts ◽  
Control Knowledge

The aim of the tutorial is to help students to master the basic concepts and methods of the study of calculus. In volume 2 we study analytic geometry in space; differential calculus of functions of several variables; local, conditional, global extrema of functions of several variables; multiple, curvilinear and surface integrals; elements of field theory; numerical, power series, Taylor series and Maclaurin, and Fourier series; applications to the analysis and solution of applied problems. Great attention is paid to comparison of these methods, the proper choice of study design tasks, analyze complex situations that arise in the study of these branches of mathematical analysis. For self-training and quality control knowledge given test questions. For teachers, students and postgraduate students studying mathematical analysis.

Sign in / Sign up

Export Citation Format

Share Document