Relevant bibliographies by topics / Quality Assurance Matrix

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Quality Assurance Matrix'

Author: Grafiati
Published: 4 June 2021
Last updated: 7 February 2022

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Journal articles on the topic "Quality Assurance Matrix"

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Trzepieciński, Tomasz, and Jan Jaworski. "QUALITY ASSURANCE OF MACHINE REPAIR IN PRODUCTION PLANTS." Acta Metallurgica Slovaca 23, no. 4 (December 4, 2017): 387. http://dx.doi.org/10.12776/ams.v23i4.1007.

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<p>The paper considers the problem of the assurance of the quality of machine repair in production plants. The primary quality repair index has been described analytically with the help of the arithmetic matrix in which the relationship between the production capacity and the structural and organizational factors of the quality of repair is taken into account. Ratios of input variables and the output relationship with the primary factors of the quality of machine repair were determined using matrix equations that reflect the relationship between design, process and organizational factors, and the basic quality ratios. It has been concluded that the quality of machine repair depends on proper diagnosis, the wear and tear of individual connections of elements, and the technological processes leading to the restoration of the damaged parts and reassembling the machine.</p>
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Long, David. "The Quality Assurance Matrix in Pharmaceutical Research and Development.A Personal View." Quality Assurance Journal 1, no. 1 (September 1996): 17–22. http://dx.doi.org/10.1002/(sici)1099-1786(199609)1:1<17::aid-qaj1>3.0.co;2-8.

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FORBES, LORRY B., ANDRIJANA RAJIC, and ALVIN A. GAJADHAR. "Proficiency Samples for Quality Assurance in Trichinella Digestion Tests." Journal of Food Protection 61, no. 10 (October 1, 1998): 1396–99. http://dx.doi.org/10.4315/0362-028x-61.10.1396.

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A reliable method to produce proficiency samples containing known numbers of Trichinella spiralis cysts for use in quality assurance systems for Trichinella digestion tests was developed and validated. A filtrate containing Trichinella cysts was produced by homogenizing and filtering the muscles of an experimentally infected rat. Using a stereomicroscope and micropipette, intact cysts were removed from the filtrate and were transferred onto an agar substrate to allow accurate counting and subsequent transfer into a sample matrix. The proficiency sample matrix consisted of 20-g balls of lean ground beef and was combined with 80 g of a Trichinella-free muscle tissue to obtain the required 100-g sample weight for the assay. The mean overall larval recovery from 404 proficiency samples was 93.0%. Larval recoveries ≥95, 85, and 75% occurred in 52.4, 84.4, and 94.3%, respectively, of the 404 samples tested. Results indicated that, after a short training period, technicians with no prior experience in digestion techniques performed as well as experienced technicians. The maximum shelf life of proficiency samples was not determined but was at least 3 weeks. Validation data were used to develop panels composed of proficiency samples prepared as described above and to establish guidelines for the interpretation of proficiency panel results.
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Banci Buonamici, F., A. Compagnucci, L. Marrazzo, S. Russo, and M. Bucciolini. "An intercomparison between film dosimetry and diode matrix for IMRT quality assurance." Medical Physics 34, no. 4 (March 20, 2007): 1372–79. http://dx.doi.org/10.1118/1.2713426.

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Li, Bixin, Ying Zhou, Yancheng Wang, and Junhui Mo. "Matrix-based component dependence representation and its applications in software quality assurance." ACM SIGPLAN Notices 40, no. 11 (November 2005): 29–36. http://dx.doi.org/10.1145/1107541.1107546.

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Pearson, Ben. "The clinical governance of multidisciplinary care." International Journal of Health Governance 22, no. 4 (December 4, 2017): 246–50. http://dx.doi.org/10.1108/ijhg-03-2017-0007.

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Purpose Providers of health and social care services aim to deliver personalised care that is safe, effective, caring, responsive and well led. Multidisciplinary teams often have to work together, either within or across multiple provider organisations in order to achieve this aim. It is valuable to have a framework of clinical governance for such circumstances that enables a shared assurance of quality. To achieve these aims, the purpose of this paper is to present a clinical governance matrix framework developed by the author’s experiences in clinical practice, in service change and in management and leadership. Design/methodology/approach There are seven pillars of clinical governance; patient and public involvement, staffing and staff management, clinical effectiveness and research, using information and IT, education and training, risk management and audit. These seven pillars of clinical governance can be mapped against the five quality domains of safe, effective, caring, responsive and well led to create a matrix that in turn describes the framework we need for quality assurance. Findings The matrix is populated with outcome measures and these are monitored to achieve balance across the framework. The tool can be used at the level of an individual practitioner all the way up to multiple organisations in collaboration. The detail in each cell of the matrix will change accordingly and critically should be developed and owned by the subject of the framework. Originality/value This clinical governance matrix is presented as a methodology to monitor quality assurance in the settings of health and social care.
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Schneider, C. J., J. D. P. Van Dijk, A. A. C. De Leeuw, P. Wust, and W. Baumhoer. "Quality assurance in various radiative hyperthermia systems applying a phantom with LED matrix." International Journal of Hyperthermia 10, no. 5 (January 1994): 733–47. http://dx.doi.org/10.3109/02656739409022451.

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Badrick, Tony, and Peter Graham. "Can a combination of average of normals and “real time” External Quality Assurance replace Internal Quality Control?" Clinical Chemistry and Laboratory Medicine (CCLM) 56, no. 4 (March 28, 2018): 549–53. http://dx.doi.org/10.1515/cclm-2017-0115.

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Abstract Internal Quality Control and External Quality Assurance are separate but related processes that have developed independently in laboratory medicine over many years. They have different sample frequencies, statistical interpretations and immediacy. Both processes have evolved absorbing new understandings of the concept of laboratory error, sample material matrix and assay capability. However, we do not believe at the coalface that either process has led to much improvement in patient outcomes recently. It is the increasing reliability and automation of analytical platforms along with improved stability of reagents that has reduced systematic and random error, which in turn has minimised the risk of running less frequent IQC. We suggest that it is time to rethink the role of both these processes and unite them into a single approach using an Average of Normals model supported by more frequent External Quality Assurance samples. This new paradigm may lead to less confusion for laboratory staff and quicker responses to and identification of out of control situations.
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Vladzymyrskyy, A. V. "Matrix for direct-to-consumer telemedicine quality assessing." Journal of Telemedicine and E-Health 6, no. 4 (December 30, 2020): 24–44. http://dx.doi.org/10.29188/2542-2413-2020-6-4-34-44.

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Introduction. The growing demand for online medical services, the active inclusion of telemedicine consultations in state health insurance programs, and the general intensive development of telemedicine require a methodology for quality assurance and control. Objective is to develop a methodological basis for a comprehensive assessment of the quality and effectiveness of direct-to-consumer telemedicine consultations. Material and methods. There are sources of primary data: systematizing scientific publications (descriptions of models and methodologies for telemedicine quality assessing); own theoretical researches, accumulated practical experience with of directto-consumer telemedicine. Methods of analysis and synthesis have been use. Results and discussion. The matrix for for direct-to-consumer telemedicine quality assessing has formed. It includes four domains «Accessibility», «Efficiency», «Safety» and «Responsibility» from the standpoint of all participants of the distant interaction processes: patient and/or legal representative; medical consultant; operator of a telemedicine information system; medical organization; health care system (society). The matrix takes into account the aspects of goal-setting and the interests of each participant. There are structured metrics in frame of each domain. Conclusions. The matrix can be used as a basis for scientific research and as a methodology for internal and departmental quality control of medical care provided via telemedicine technologies.
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Koumoulos, Elias, and Costas Charitidis. "Integrity of Carbon-Fibre Epoxy Composites through a Nanomechanical Mapping Protocol towards Quality Assurance." Fibers 6, no. 4 (October 11, 2018): 78. http://dx.doi.org/10.3390/fib6040078.

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The purpose of this study is to assess the integrity of carbon-fibre reinforced plastics (CFRP) comprising of commercial and surface modified CFs through nanomechanical mapping protocol, towards the feasibility of nanoindentation tool as a quality assurance means in a composite manufacturing process. Carbon fibre surface modification was selected for enhancement of the wetting properties of carbon fibres in order to improve the adhesion force between the fibre and the polymer matrix. In all cases, epoxy resin was used as a matrix for the manufacturing of composite samples. Plastic deformation/elastic recovery were recorded (together with viscoelasticity and adhesion-discontinuities and fluctuations during measurement), while elastic modulus values are also mapped. Moreover, the resistance to applied load is assessed and compared for all cases.
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Dissertations / Theses on the topic "Quality Assurance Matrix"

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Mužík, Lukáš. "Nástroje managementu kvality." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254332.

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The subject of this thesis is the selection and implementation of new quality management tools in the selected engineering company INOX SERVIS s.r.o. The theoretical part deals with the different tools and methods of quality management and the analysis of current situation. Obtained information were used in the application of tools in the manufacturing process. Implementation was evaluated and other variants of possible process improvements were established.
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Lindqvist, Richard. "Geometrical and dimensional Measurement Planning : - a systematic and holistic approach." Licentiate thesis, KTH, Mätteknik och optik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-42163.

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För att försäkra sig om den slutliga kvaliteten på maskinbearbetade komponenter måste tillverkande företag mäta och verifiera de geometriska och dimensionella egenskaperna på komponenter innan dem skickas vidare nedströms till den mer värdeskapande monteringen. Det är idag vanligt att den geometriska och dimensionella mätningen och verifieringen uppstår varje gång då en maskin ställs om, när man startar om eller startar upp en ny produktionslina eller då en produktionsprocess ändras. Produktionsteknisk mätteknik och resultat från utförda mätningar används sedan som indata för statistisk processtyrning och övervakning av produktionsprocesser. Syftet med vår forskning har varit att först ta fram en nulägesbild av mätteknisk beredning inom fordons- och flygindustrin och utifrån den identifiera framtida trender med behovsanalys och gap. Utifrån analysen har vi sedan utforskat och utvecklat en modell och metodik för mätteknisk mät- och styrbarhetsberedning. I denna licentiat avhandling har vi utforskat området geometrisk och dimensionell mät- och styrbarhetsberedning (GMCP - Geometrical and dimensional Measurement and Controllability Planning). Vi presenterar en nulägesanalys av området och vi presenterar en teori med modell och ramverk för GMCP. Vidare har vi utforskat en metodik och verktyg benämnd kvalitetssäkringsmatris (QAM - Quality Assurance Matrix) och som vi lyfter fram i denna avhandling. I slutet av avhandlingen presenteras och diskuteras dem hittills uppnådda resultaten från forskningen och i det sista kapitlet dras slutsatser och den fortsatta forskningen inom ”SIMET-GICP” projektet presenteras.
In order to ensure final product quality on machined components, manufacturing enterprises must measure and inspect the geometrical and dimensional characteristics of components before they go into higher-value assemblies. Commonly, the geometrical and dimensional measurement and inspection occurs every time at machine tool set-up, when a line is restarted or if the production process is changed. Production metrology and results from production measurements is used as input data for statistical process control and monitoring of production processes. The purpose of our research has been to firstly perform a state of the art analysis in the area of measurement planning applied in the automotive and aerospace industry. The output from the state of the art study has then been used to identify future trends and needs including a gap analysis. Then we used the analysis to explore and develop a model and methodology for measurement and controllability planning.   In this licentiate thesis we have explored the area of GMCP (Geometrical and dimensional Measurement and Controllability Planning). As a major result in this thesis a state of the art survey on GMCP is presented. Based on the state of the art study a theory and model framework for GMCP has been explored and a methodology and tool called QAM (Quality Assurance Matrix) is highlighted in this thesis. In the end of the thesis we present and discuss the present research results we have accomplished and in the final chapter we draw conclusions and outline the continued research within the SIMET-GICP project.
QC 20111027
SIMET 1
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Křížová, Blanka. "Nástroje managementu kvality." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232118.

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Diploma thesis introduces new quality management tools in a selected project--oriented company. In order to achieve this, analysis of current situation was done first, that is described in the theoretical part. Overall evaluation together with proposal of other possibilities to improve the manufacturing process was carried out after implementing the selected method.
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Nilsagård, Filippa, and Sigrid Lindholm. "Kvalitetssäkring av kravställd dokumentation : En fallstudie utförd på Saab Dynamics." Thesis, Uppsala universitet, Institutionen för samhällsbyggnad och industriell teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-444693.

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Saab is a global company that primarily operates in the defense industry. The study is conducted at the Project office within the Development Department at Saab Dynamics. In a GAP analysis carried out by Saab Dynamics, one of the company's processes has proved to be unclear. The process that has been noted as problematic concerns how Saab Dynamics receives, reviews and approves and stores technical documentation that accompanies incoming deliveries. The study aims to clarify how the Development Department and the Purchasing Department collaborate on the work step and clarify how quality assurance of required documentation takes place in the current situation and how it can be improved. In the study, theory of total quality management, organizational theory as well as processes and Lean have been used. The case study has a qualitative approach as the focus aims to get a holistic view of the working methods on a specific process at Saab Dynamics that has been studied. The method used to collect data is documentation review and interviews of employees at the company. The result describes an unclear division of responsibilities regarding the work step between the Purchasing and Development Department and there is no clear process for quality assurance of required documentation. In order to have an efficient process, Saab Dynamics needs to eliminate the variation and waste that currently exists. Finally, an implementation proposal is presented for a standardized process for the work step.
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Books on the topic "Quality Assurance Matrix"

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Barbara, Steinhoff, and Blasius Helga, eds. Herbal medicinal products: Scientific and regulatory basis for development, quality assurance and marketing authorisation. Suttgart: Medpharm Scientific Publishers, 2003.

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American Society for Quality Control. Energy & Environmental Quality Division. International Committee., ed. International matrix of nuclear quality assurance program requirements. Milwaukee, WI: ASQC Quality Press, 1995.

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Committee, American Society for Quality Control Energy &. Environmental Quality Division International. International Matrix of Nuclear Quality Assurance Program Requirements (ASQC Briefing Series) (Asqc Briefing Series). Amer Society for Quality, 1995.

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Ramzan, Iqbal. Phytotherapies: Efficacy, Safety, and Regulation. Wiley & Sons, Incorporated, John, 2015.

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Ramzan, Iqbal. Phytotherapies: Efficacy, Safety, and Regulation. Wiley & Sons, Incorporated, John, 2015.

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Ramzan, Iqbal. Phytotherapies: Efficacy, Safety, and Regulation. Wiley & Sons, Incorporated, John, 2015.

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Yarnell, Eric, Kathy Abascal, and G. M. D. Hooper Carol. Botanical Medicine: Efficacy, Quality Assurance and Regulation. Mary Ann Liebert, 1999.

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Book chapters on the topic "Quality Assurance Matrix"

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Kern, Robert, Hans Thies, Cordula Bauer, and Gerhard Satzger. "Quality Assurance for Human-Based Electronic Services: A Decision Matrix for Choosing the Right Approach." In Current Trends in Web Engineering, 421–24. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-16985-4_39.

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"Quality Assurance of Metal-Matrix Composites." In Composites, 726–30. ASM International, 2001. http://dx.doi.org/10.31399/asm.hb.v21.a0003437.

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Hibbert, D. Brynn. "Introduction to Quality in the Analytical Chemistry Laboratory." In Quality Assurance in the Analytical Chemistry Laboratory. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195162127.003.0005.

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To understand quality of chemical measurements, one needs to understand something about measurement itself. The present edition of the International Vocabulary of Basic and General Terms in Metrology (ISO 1993, term 2.1) defines a measurement as a “set of operations having the object of determining a value of a quantity.” Quantity is defined as an “attribute of a phenomenon, body or substance that may be distinguished qualitatively and determined quantitatively” (ISO 1993, term 1.1). Typical quantities that a chemist might be interested in are mass (not weight), length, volume, concentration, amount of substance (not number of moles), current, and voltage. A curse of chemistry is that there is only one unit for amount of substance, the mole, and perhaps because “amount of substance” is verbally unwieldy and its contraction “amount” is in common nonscientific usage, the solecism “number of moles” is ubiquitous and has led to general confusion between quantities and units. The term “measurand,” which might be new to some readers, is the quantity intended to be measured, so it is correct to say of a numerical result that it is the value of the measurand. Do not confuse measurand with analyte. A test material is composed of the analyte and the matrix, and so the measurand is physically embodied in the analyte. For example, if the measurand is the mass fraction of dioxin in a sample of pig liver, the dioxin is the analyte and the liver is the matrix. A more rigorous approach of defining a quantity in terms of, System – Component; kind of quantity, has been under discussion in clinical medicine for some time. This concept of specifying a quantity has recently been put on a sound ontological footing by Dybkaer (2004). A measurement result typically has three components: a number and an uncertainty with appropriate units (which may be 1 and therefore conventionally omitted). For example, an amount concentration of copper might be 3.2 ± 0.4 μmol L-1. Chapter 6 explains the need to qualify an uncertainty statement to describe what is meant by plus or minus (e.g., a 95% confidence interval), and the measurand must also be clearly defined, including speciation, or isomeric form. Sometimes the measurement is defined by the procedure, such as “pH 8 extractable organics.”
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Costa, Mauricio Magalhães, Peter van Dam, Mahmoud Danaei, Paulo Roberto Leal, and Daniel Leal. "Reconstructive and Oncoplastic Surgery." In Breast cancer: Global quality care, edited by Hans Junkermann, Wolfgang Buchberger, Sylvia Heywang-Köbrunner, Michael Michell, Alexander Mundinger, Carol Benn, and Sophia Zackrisson, 157–65. Oxford University Press, 2019. http://dx.doi.org/10.1093/med/9780198839248.003.0014.

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Abstract: Breast reconstruction has evolved over the last century, especially with the advent of new technologies including anatomical implants, expanders, and, most recently, acellular dermal matrix. The development of techniques ranging from free/pedicle flaps, implant-based reconstruction, fat grafting, and oncoplastic surgery have also played a major part in the success of this field. It is important that patients are informed about the possibility of having some type of reconstructive surgery in a second stage. The surgery should be performed by someone with the required training, either a plastic or oncoplastic surgeon, and this is an important quality assurance issue for the patient. Immediate breast reconstruction is gaining wide acceptance. However, secondary reconstruction is also a valid instrument, and in many cases, it is a reference standard procedure.
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Khimicheva, Ganna, and Antonina Volivach. "THE MATHEMATICAL MODEL FOR ESTIMATING THE PROBABILITY OF RISK OF INCOMPETENT SPECIALIST GRADUATION." In Integration of traditional and innovative scientific researches: global trends and regional aspect. Publishing House “Baltija Publishing”, 2020. http://dx.doi.org/10.30525/978-9934-26-001-8-2-12.

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The article presents the results of research for the mathematical model for estimating the probability of risk of incompetent specialist graduation. The mechanisms and tools to determine the probability of risk of incompetent specialist graduation have been developed in the course of the research. The goal tree method has been used as a mechanism to determine the relationship between the structural components of the educational process and the educational program. Using this method, the structuring of 9 criteria by which the educational program quality is evaluated has been carried out. That is, its strengths and weaknesses have been identified. In turn, as a tool for estimating the probability of an educational process (educational program) risks and the graduation of an incompetent specialist, it has been proposed to use a regression mathematical model. To build a mathematical model, an active experiment, a qualimetric approach, a method of regression analysis, and 16 conditional educational programs that met the "Standards and Guidelines for Quality Assurance in the European Higher Education Area" (ESG) have been used. The construction of the model has been carried out according to a specially designed scheme, which included 5 stages. In the first stage, a group of experts was formed and their consistency was determined with the help of the "HEI Experts" software. In the second stage, six groups of indicators were identified, which further estimated the educational process (educational program) quality. For this purpose, the experts used the method of pairwise comparison to select 9 unit indicators, which further estimated the levels of compliance of 16 conditional educational programs. The estimation was conducted according to standardized quality indicators that are inherent in the real educational process (educational program). In the third stage, a robust plan of the experiment was constructed using the method of pseudo-random LP-τ numbers uniformly distributed in multidimensional space. According to the plan, a working matrix of the experiment was formed. Then, the group of experts formed in the first stage carried out the percentage estimation of the probability of risk of incompetent specialist graduation. In the fourth stage, a mathematical model was built using the PRIAM (planning, regression, and model analysis) software. This model allows us to assess nine factors that affect the probability of risk of incompetent specialist graduation. In the fifth stage, the statistical characteristics of the model were tested. According to the test results, it was proved that the model is informative, adequate, and stable, both in terms of structure and calculations. At the same stage, the marginal surfaces were constructed and the forces of influence of regressors (indicators) on the probability of risk of competent/incompetent specialist graduation were determined. According to the results of research, it has been proved that such indicators as compliance of the applicants (bachelors) level with the second Master's level and the level of considering labor market employers (stakeholders) requirements have the strongest impact on the competence of the future specialists. The proposed model allows us to estimate the factors influencing the efficiency (effectiveness) of the educational process and to determine the probability of the risk of competent/incompetent specialist graduation.
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Conference papers on the topic "Quality Assurance Matrix"

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Nadia, Belu, Misztal Agnieszka, and Ionescu Laurentiu Mihai. "Quality Assurance Matrix as the advanced generation of quality control." In 2016 International Conference on Economics and Management Innovations. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/icemi-16.2016.3.

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Jung, Hyun Joon. "Quality assurance in crowdsourcing via matrix factorization based task routing." In the 23rd International Conference. New York, New York, USA: ACM Press, 2014. http://dx.doi.org/10.1145/2567948.2567951.

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Zhang, Fuqiang, Junli Li, Gang Chen, and Jiaju Man. "Assessment of Color Video Quality with Singular Value Decomposition of Complex Matrix." In 2009 Fifth International Conference on Information Assurance and Security. IEEE, 2009. http://dx.doi.org/10.1109/ias.2009.144.

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Moss, Chantrice, Suman Chakrabarti, and David W. Scott. "Parts quality management: Direct part marking of data matrix symbol for mission assurance." In 2013 IEEE Aerospace Conference. IEEE, 2013. http://dx.doi.org/10.1109/aero.2013.6497372.

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Witten, Matthew, and Owen Clancey. "An evolutionary algorithm for optimization of affine transformation parameters for dose matrix warping in patient-specific quality assurance of radiotherapy dose distributions." In 2012 IEEE Congress on Evolutionary Computation (CEC). IEEE, 2012. http://dx.doi.org/10.1109/cec.2012.6256139.

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Hsu, David K., Peter K. Liaw, and George Y. Baaklini. "Comparison of NDE Results and Correlation With Microstructural Characteristics of NiFeAl/Wf." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-489.

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Metal matrix composites (MMC) and intermetallic matrix composites (IMC) are materials of complex structure. Nominally defect-free, as-manufactured MMC requires nondestructive evaluation (NDE) for quality assurance and process monitoring purposes. In this work, three NDE techniques — ultrasonics, eddy current, and X-ray radiography — were applied to un-damaged NiFeAI/Wf coupons. Images of the coupons were obtained using the three techniques. The NDE results were compared among themselves, and correlations were sought between these results and microstructural features of the specimen. Consistencies were found among the NDE results and a strong correlation was found between the spatial variation of fiber density and the NDE signals.
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Toyoda, Shunsuke, Sota Goto, Yasushi Kato, Satoru Yabumoto, and Akio Sato. "Recent Development of HFW Linepipe With a High-Quality Weld Seam Suitable for Sour Service Environments." In 2014 10th International Pipeline Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/ipc2014-33206.

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Based on the appreciable progress being made in quality control and assurance technology for the electric resistance welding process, the number of applications for high-frequency electric resistance welded (HFW) linepipe in highly demanding, severe environments, such as offshore and sour environments, has gradually increased. Resistance to hydrogen-induced cracking (HIC) is the most important property for a linepipe to possess for use in sour environments. However, resistance to HIC, especially along the longitudinal weld seam, has not yet been fully related to metallurgical factors. In this study, to clarify the effects of inclusions on the sour resistance properties of X60- to X70-grade steels, their resistances to HIC were numerically simulated. For the simulation, the steels were assumed to have a yield strength of 562 MPa and a tensile strength of 644 MPa. To estimate the effect of nonmetallic inclusions, a virtual inclusion was situated at the center of a 10-mm-thick HIC test specimen. Tests were performed using NACE test solution A. The crack propagation rate was calculated as a function of the content of diffusible hydrogen, the diameter of the inclusion, and the fracture toughness of the matrix after hydrogen absorption. In the propagation calculation, the resistance to chemical reactions at the interface of the inclusion matrix was also considered to be a delaying factor. By assuming a resistance to chemical reactions at the interface, the crack propagation rate could be fitted to the actual HIC propagation rate. Based on the numerical simulation results, HFW linepipe with a high-quality weld seam was developed. Controlling the morphologies and distributions of oxides generated during the welding process is the key factor for improving the resistance to HIC. Using a combination of optimized chemical composition, microstructure and oxide content, the weld seam of the developed X70-grade HFW steel pipe showed excellent resistance to HIC.
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Wei, X., J. R. Mallon, L. F. Correa, M. R. Dorfman, and F. Ghasripoor. "Microstructure and Property Control of CoNiCrAlY Based Abradable Coatings for Optimal Performance." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p0407.

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Abstract A CoNiCrAlY-hBN/Polyester material has recently been developed for clearance control applications in gas turbine compressors that use titanium alloy blades. While engine tests serve as the final evaluation of the coating performance, quality assurance laboratories and production shops would rely upon the more readily available coating hardness values to predict performance. This paper will focus on the reproducibility of coating macrohardness with a plasma spray process. It is shown that plasma spray parameters affect the hardness of CoNiCrAlY-hBN/Polyester coatings by changing the level of polyesters retained in the coating and the volume percentage of metallic matrix. The correlation between hardness, retained polyester level and microstructure of these coatings is captured in a coating hardness map from which desired microstructure and polyester entrapment are determined. Based on the understanding of the correlation between coating hardness and microstructural features, the use of additional criteria other than hardness such as retained polyester level and non-metallic portion of the coating is recommended in order to assure the quality of the coating more effectively.
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9

Clark, Alastair S., and Zdenko Jurjevic. "Fast Simulation of Dynamic Behaviour of Heavy Duty Gas Turbines for Quality Improvement and Reduced Design Cycle Time." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-27382.

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ALSTOM has made big improvements in simulating the dynamic behaviour of the GT (rotor, bearings and structural parts), in terms of displacements and forces by developing a 2 stage approach comprising a simplified physical model and detailed calculations using finite elements condensed into a matrix super element (substructuring). The models from each have been validated against frequency measurements. The simplified approach provides a fast overview in terms of sensitivity analysis of basic physical influences. It accurately reflects the generic dynamic behaviour of both rotor and structure. Reducing the FE-calculation time by a factor of 10 has enabled the influence of small or large modifications to individual part designs on the dynamic behaviour of the GT to be understood to the highest level of detailed design features. Calculated frequency results from modal and forced response calculations are compared to measurements within a 2% margin. In particular the focus is on the improvements in the quality of the finite element modelling with more detailed features and more accurate identification of eigenfrequencies and coupled modes. Validation work comprises the modal analysis of single parts and subassemblies as well as matching mode shapes and frequencies of complete gas turbine. Models are used to evaluate design improvements prior to engine testing or implementation in field engines in order to comply with prescribed exclusion zones, to be introduced as early as the concept stage as well as providing project teams with overviews for planning and decision making. Future developments to include Modal Assurance Criteria and rapid post-processing will further reduce design cycle time and improve quality in terms of the consistency and repeatability with regard to mode shape recognition.
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10

Nomaguchi, Yutaka, Kousuke Nakashima, and Kikuo Fujita. "Knowledge Management Framework for Design Verification Process With Computer-Aided Engineering Analysis." In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28670.

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Computer-based engineering analysis has become an essential means for verifying an engineering design. Its effects depend on not only available computational methods and computer performance but also what models and conditions are given to the computation. Their explicit representation and management must become a forefront and serious task of computer-aided design activities for their better documentation, more appropriate quality assurance, wider utilization, etc. This paper proposes a framework for representing and managing the knowledge involved in engineering analysis modeling for design verification. The computation-based design consists of the two phases, engineering analysis for understanding physical phenomena and design verification based on its results. The management format of the engineering analysis modeling process, which is named EAMM (Engineering Analysis Modeling Matrix), is introduced for the first phase. The process structure of design verification and classification of designer’s decision making are discussed for the second phase by referring the framework of EAMM. gIBIS (graphical Issue-Based Information System) model, which is a format for describing argumentation, is adopted for representing the process structure and the designer’s decision makings. A design process of a micro mixing mechanism demonstrates the potential and the promise of a proposed framework.
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Reports on the topic "Quality Assurance Matrix"

1

Gas generation matrix depletion quality assurance project plan. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/674670.

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