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Tytuł:
Quality Control and Assurance System - INTOSAI Framework of Professional Pronouncements
Autorzy:
Serlikowska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/2143188.pdf
Data publikacji:
2022-04
Wydawca:
Najwyższa Izba Kontroli
Tematy:
quality control
quality assurance
quality control system
INTOSAI standards
IFPP
Opis:
The concept of quality is inextricably related to achieving assigned purposes by an organization in an effective and efficient manner1 . When it comes to high quality of audits, it is manifested primarily by conducting procedures according to standards recognized not only at the national, but also international level2 . Like any term, “quality” needs some explanation as well. The aim of the article is to outline the issues of quality assurance and control according to the current international standards (The INTOSAI Framework of Professional Pronouncements, IFPP). The analysis of the documents indicates imprecision and inconsistency of the existing approach with regard to the separated parts of the above-mentioned system. The following sections of the article refer to the understanding of the issues of quality assurance and control in individual principles, standards and guidelines of INTOSAI in order to finally formulate the concept of the chain quality that can be concluded from these documents.
Źródło:
Kontrola Państwowa; 2022, 67, 2 (403); 154-163
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Quality Control Tools used for Sustainability of Quality
Autorzy:
Demirkaya, Fatih
Powiązania:
https://bibliotekanauki.pl/articles/2200316.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
quality
quality control
7 tools of quality control
quantitative quality control
qualitative quality control
jakość
kontrola jakości
ilościowa kontrola jakości
jakościowa kontrola jakości
Opis:
Quality Control (QC) is an active process that detects defects in a product claimed to be ready for delivery, so it can be said that QC is the key to maintaining quality. Although quantitative quality control methods based on numbers and measurements provide tangible implications with more reliable results, qualitative measurements are also important for the quality control process. When manufacturers apply appropriate quantitative and qualitative quality control methods in their production processes, they can identify problems in products and produce appropriate solutions. In this research, quality control practices are examined and their effects on the sustainability of quality are investigated. In addition, the functioning of Quality Control methods is revealed, and the usage areas and forms of the methods are examined with examples. While evaluating the Quality and Quality Control methods, which are discussed in a wide range, other titles under the title of Quality are also included within the framework of this study. In today's conditions, the improvement of concepts such as time, less cost, and quality production that gains in value in the production process is directly related to the adequacy of quality control. The aim of this paper is to solve the quality problems in the production process of manufacturing organizations by investigating various technical quality control methods used to improve all these concepts. By eliminating the quality problems and minimizing the losses, the profitability level of the organization will be increased, along with this, the quality will be improved and become sustainable.
Źródło:
Archiwum Wiedzy Inżynierskiej; 2022, 7, 1; 21--26
2544-2449
Pojawia się w:
Archiwum Wiedzy Inżynierskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical analysis of production quality, complete blood count, multi-extremal optimization i.e. about estimation of multinomial distrbution
Autorzy:
Zieliński, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/747856.pdf
Data publikacji:
1982
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
quality control, multinomial distribution
Opis:
Artykuł nie zawiera streszczenia
The article contains no abstract
Źródło:
Mathematica Applicanda; 1982, 10, 21
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of Selected Strategies of Statistical Quality Control
Autorzy:
Worwa, K.
Powiązania:
https://bibliotekanauki.pl/articles/409302.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
Statistical Quality Control
Control Strategy
Control Effectiveness
Opis:
The paper presents the results of a comparative analysis of the two methods of statistical quality control of products. That two methods differ from each other mainly by a way of determining a subset of products subjected to inspection. The first of the two methods, hereinafter referred to as the completely random method, is to draw a certain number of products for control of the entire products population. The second method, called the method of drawing from partitions, is a pre-split across the specific products population into smaller parts, called partitions, and then create a representation (sample) of the products subject to control by drawing the products from each partition. The main result of this study is to determine the conditions for which the effectiveness of quality control methods with drawing from partitions is not less than the efficiency of the method with fully random drawing, whereby the efficiency criterion is the likelihood of the event, consisting in the fact that there is at least one incorrect product among the drawn products. The considerations were illustrated by numerical examples, designed to compare the effectiveness of the analyzed methods of quality control.
Źródło:
Research in Logistics & Production; 2015, 5, 4; 337-346
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Quality Control Test for General X-Ray Machine
Autorzy:
AL-Jasim, Ali Kareem
Hulugalle, S.N.C.W.M.P.S.K.
Al-Hamadani, Haider Kamil
Powiązania:
https://bibliotekanauki.pl/articles/1178771.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Quality Assurance
Quality Control
X-Ray Machine
Opis:
The aim of a quality assurance program is to assist a radio-diagnostic facility in consistently obtaining adequate radiological information with a minimum of dose and a minimum of cost. An integrated part of a quality assurance program is quality control ascertaining quality by measurements and other procedures. When procuring equipment, a specification is worked out taking into account all aspects of the performance of the equipment including the desired tolerances of technique factors. In this study the seven tests (beam alignment, beam collimation, reproducibility, accuracy of kv, time accuracy, half value layer (HVL) and leakage) were carried out for the newly installed General X-Ray machine at Nuclear Malaysia and were in the acceptable limits. Such a test will be the responsibility of a qualified physicist or engineer. The status test is carried out in order to establish the functional status of the equipment. The test is performed immediately after the acceptance test or as an integrated part of it. The test will be repeated when repair influencing the functional status has taken place like the acceptance test; the status test will comprise absolute measurements and will likewise be the responsibility of a qualified physicist or engineer.
Źródło:
World Scientific News; 2017, 90; 11-30
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of apriori algorithm in the lamination process in yacht production
Autorzy:
Niksa-Rynkiewicz, Tacjana
Landowski, Michal
Szalewski, Paweł
Powiązania:
https://bibliotekanauki.pl/articles/1585049.pdf
Data publikacji:
2020
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
apriori algorithm
quality control
laminate defects
Opis:
The article specifies the dependence of defects occurring in the lamination process in the production of yachts. Despite great knowledge about their genesis, they cannot be completely eliminated. Authentic data obtained through cooperation with one of the Polish yacht shipyards during the years 2013–2017 were used for the analysis. To perform a simulation, the sample size was observed in 1450 samples, consisting of 6 models of yachts with closed and open deck. Finding the dependence of the occurrence of specific defects will allow for faster procedures and more effective quality control, which will contribute to lower costs. The use of new methods based on artificial intelligence related to Big Data allows for easier observation of dependencies in the complex structure of data from yacht production. The association rules were defined using the algorithm Apriori and define interdependent defects. A number of dependencies were found for the occurrence of production defects not obvious to technologists, but occurring with a high probability of coexistence. The presented research results may allow the planning process of production tasks to be improved.
Źródło:
Polish Maritime Research; 2020, 3; 59-70
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality Control in Aerosol Production
Autorzy:
Fitrzyk, A.
Niemiec, K.
Powiązania:
https://bibliotekanauki.pl/articles/2065006.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
quality control
aerosol
AQL
metal container
Opis:
Aerosol products are present in different industries including cosmetic, technical, household and many more. These products are subject to number of controls both at the pre-production, in-process and post-production stages. Controls at the pre-production stage relate to checking the conformity of individual components that make up the aerosol packaging, as well as raw materials that are used to create the formula. The checks carried out during the production process are mainly focused on the verification of parameters at particular stages of production. Whereas, post-production checks are related to the evaluation of the finished product. Due to the highest share of metal packaging in the aerosol products market, such products are the subject of this article.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 85--91
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discriminant Analysis and Optimization Applied to Vibration Signals for the Quality Control of Rotary Compressors in the Production Line
Autorzy:
Reis, Déborah
Vanzo, Fernanda
Reis, Jorge
Duarte, Marcus
Powiązania:
https://bibliotekanauki.pl/articles/176740.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
discriminant analysis
noise
optimization
quality control
Opis:
In this paper, the applications of the multivariate data analysis and optimization on vibration signals from compressors have been tested on the assembly line to identify nonconforming products. The multivariate analysis has wide applicability in the optimization of weather forecasting, agricultural experiments, or, as in this case study, in quality control. The techniques of discriminant analysis and linear program were used to solve the problem. The acceleration and velocity signals used in this work were measured in twenty-five rotating compressors, of which eleven were classified as good baseline compressors and fourteen with manufacturing defects by the specialists in the final acoustic test of the production line. The results obtained with the discriminant analysis separated the conforming and nonconforming groups with a significance level of 0.01, which validated the proposed methodology.
Źródło:
Archives of Acoustics; 2019, 44, 1; 79-87
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality Control in Improving Product and Service Quality
Kontrola jakości w doskonaleniu jakości produktów i usług
Autorzy:
Ahmad, Muhammad Nuzul
Powiązania:
https://bibliotekanauki.pl/articles/24085344.pdf
Data publikacji:
2023
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
quality
control
quality control
improvement
jakość
kontrola
kontrola jakości
doskonalenie
Opis:
Quality control is a system that facilitates companies make certain that their products or services meet specific first-rate requirements. Quality is defined as the diploma of excellence or superiority that a products or services possesses, whilst control is the method of tracking, inspecting, and comparing products and services to ensure they meet unique necessities. Quality control is the system of mixing these two standards to make sure that products and services meet the preferred level of quality. This article examines the role of quality control in improving service or product quality. It provides definitions of quality, control, and quality control and explains the different types of control and quality control that organizations can use to improve the quality of their products or services. There are various sorts of control, which includes direct control, technical control, and bureautical control, and every kind focuses on different aspects of the quality control technique. Also, there are different types of quality control, which include internal and external quality control. By implementing quality control measures, organizations can perceive and deal with quality issues earlier than they come to be primary issues. This article also high- lights the benefit of quality control, including increased customer satisfaction, improved efficiency and reduced cost. It also addresses the challenges and limitations of quality control, and the need for continuous evaluation and improvement. At the end, quality control is an important tool for organizations looking to improve the quality of their products or services, increase customer satisfaction, and maintain a competitive advantage in the market.
Kontrola jakości to system, który umożliwia firmom upewnienie się, że ich produkty lub usługi spełniają określone wymagania jakościowe. Jakość definiuje się jako stopień doskonałości lub wyższości, jaką produkt lub usługa posiada, podczas gdy kontrola to metoda monitorowania, badania i porównywania produktów i usług w celu zapewnienia, że spełniają one określone wymagania. Kontrola jakości to proces łączenia tych dwóch kryteriów w celu zapewnienia, że produkty i usługi spełniają pożądany poziom jakości. W tym artykule omówiono rolę kontroli jakości w poprawie jakości usług lub produktów. Przedstawiono definicje jakości, kontroli i kontroli jakości oraz wyjaśniono różne rodzaje kontroli i kontroli jakości, których organizacje mogą użyć do poprawy jakości swoich produktów lub usług. Istnieją różne rodzaje kontroli, w tym bezpośrednia kontrola, kontrola techniczna i kontrola biurokratyczna, a każdy rodzaj skupia się na innych aspektach procesu kontroli jakości. Istnieją również różne rodzaje kontroli jakości, w tym wewnętrzna i zewnętrzna kontrola jakości. Dzięki wdrożeniu działań kontroli jakości organizacje mogą wykryć i rozwiązać problemy jakościowe, zanim staną się one poważnymi kwestiami. Artykuł ten podkreśla korzyści wynikające z kontroli jakości, w tym zwiększoną satysfakcję klientów, poprawę efektywności i zmniejszenie kosztów. Przedstawia również wyzwania i ograniczenia kontroli jakości oraz potrzebę ciągłej oceny i poprawy. W końcu, kontrola jakości jest ważnym narzędziem dla organizacji, które szukają sposobów na poprawę jakości swoich produktów lub usług, zwiększenie satysfakcji klientów i utrzymanie konkurencyjnej pozycji na rynku.
Źródło:
Archiwum Wiedzy Inżynierskiej; 2023, 8, 1; 18--21
2544-2449
Pojawia się w:
Archiwum Wiedzy Inżynierskiej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwarunkowania aplikacyjne koncepcji punktów sterowania jakością na przykładzie usług pralniczych
Conditions of application points of quality control on the example of the laundry service
Autorzy:
Grudowski, Piotr
Muchlado, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/1830415.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska
Tematy:
quality management
quality control
quality control points
laundry services
zarządzania jakością
sterowanie jakością
punkty sterowania jakością
usługi pralnicze
Opis:
The article presents the characteristics of the process in a professional dry cleaning. The target was the identification and description of the essential points of quality control in this type of process. It also presents information on how to formalize actions resulted in the effects of a particular organization providing laundry services.
W artykule tym zaprezentowano charakterystykę procesu w profesjonalnej pralni chemicznej. Jako cel przyjęto identyfikację i opis zasadniczych punktów sterowania jakością (PSJ) w tego typu procesach. Przedstawiono też informacje, jak działania formalizujące PSJ przełożyły się na efekty konkretnej organizacji świadczącej usługi pralnicze.
Źródło:
Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka; 2016, 2, 17; 55-63
2084-6495
Pojawia się w:
Przedsiębiorstwo we współczesnej gospodarce - teoria i praktyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykrywanie zmian struktury kosztów kontroli jakości z wykorzystaniem testów permutacyjnych
On the Changes in the Cost Structure Detection with the Permutation Tests Use
Autorzy:
Chmielińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/592473.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
Jakość produktu
Kontrola jakości
Koszty kontroli jakości
Testy statystyczne
Product quality
Quality control
Quality control cost
Statistical tests
Opis:
The quality control aiming to provide a desired level of quality of produced products, requires bearing significant expenses. The structure of expenditure spent on quality assurance, due to its multidimensional nature, should be known and constantly monitored in order to detect the changes taking place therein. In this paper a proposal for a method to verify the hypothesis about the stability of the cost structure is presented. The method applies a statistical testing procedure based on permutations. In the presented example the real data coming from the acceptance inspection carried out in factory in Silesia have been used.
Źródło:
Studia Ekonomiczne; 2014, 189; 67-76
2083-8611
Pojawia się w:
Studia Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Considerations on Energy Deposition with the BAM-Fallhammer
Autorzy:
Von Oertzen, A.
Lehmann, T.
Powiązania:
https://bibliotekanauki.pl/articles/358904.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
explosives
impact sensitivity
BAM-Fallhammer
quality control
Opis:
The BAM-Fallhammer is a mechanical device to test the impact sensitivity of explosives and to determine a sensitiveness level. By its construction it transforms potential energy into kinetic energy of an impacting hammer, then hitting the sample. Ideally the entire potential energy is available at the moment of impact and the supporting base is infinitely rigid. By this study we want to quantify how much a real Fallhammer deviates from the ideal concept, and what the differences between different Fallhammers in different laboratories are. This information has never been collected in a consistent way. The aim of the authors is to develop guidance on the mechanical properties of the Fallhammer, which can be used for different purposes such as internal quality control, validation of the correct functioning of the Fallhammer, preparation of Round-Robin tests and similar. An established and verified mechanical status of a Fallhammer would greatly improve the quality and comparability of results and Round-Robin tests on the impact sensitivity of explosives.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 2; 273-288
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limitation of Manufacturing Defects of the Selected Product in the Glass Mill
Autorzy:
Konopek, Sonia
Zarębska, Joanna
Żabińska, Iwona
Powiązania:
https://bibliotekanauki.pl/articles/2064545.pdf
Data publikacji:
2021
Wydawca:
STE GROUP
Tematy:
quality control
qualitative methods
defectiveness
glass products
Opis:
In the era of global market and internationalization of enterprises, an extremely important element influencing the competitiveness of companies is ensuring high quality of manufactured products, taking into account the requirements and expectations of buyers. At the moment when defects appear in the manufactured product, the production plant ceases to meet the expectations of customers. Not only is this related to the costs of production or complaints, but above all to the loss of credibility and good customer opinion. It is extremely important to identify and analyze the causes of this phenomenon as soon as possible, without allowing it to repeat itself. The problem of manufacturing defects becomes even more important when it poses a threat to the health or life of the customer. This also applies to products manufactured for the purposes of food protection. This article presents the results of the research that enabled the development of a method to reduce the production defects of a selected product in a glass factory. In order to achieve the goal, an analysis of the production process of the selected glass packaging was carried out, which allowed to identify defects and determine the causes and effects of their formation. Based on the presented research results, improvement measures have been proposed, consisting in developing a new organization of work in the area of quality control.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 453--464
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane metody oceny kontroli jakości wyrobu gotowego
Selected methods for quality control assessment of a finished product
Autorzy:
Szałek, Agnieszka
Madej-Kiełbik, Logina
Powiązania:
https://bibliotekanauki.pl/articles/2052654.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Skórzanego
Tematy:
metody kontroli jakości
system jakości
kontrola jakości
pobieranie próbek masek
quality control methods
quality system
quality control
sampling for testing
Opis:
W artykule opisano metody stosowane w celach kontroli jakości produkowanych wyrobów - masek medycznych w zakładzie produkcyjnym. Jednym z rozwiązań mających na celu poprawę jakości produkowanych masek medycznych oraz nadzoru nad produkcją jest wprowadzenie tzw. naukowej organizacji pracy (NOP). W artykule omówiono ogólne zasady postępowania podczas kontroli jakościowo – pomiarowej maski medycznej typu II. W trakcie procesu kontroli jakości masek stosowano dwie metody badawcze – wizualną oraz laboratoryjną. Metody te pozwoliły na uzyskanie najbardziej miarodajnych wyników, a tym samym umożliwiły w szybki i rzetelny, ale nie skomplikowany sposób, zareagować w przypadku powstałych, widocznych uszkodzeń celem wytworzenia powtarzalnego, a jednocześnie wysokiej jakości wyrobu.
The article presents methods used to control the quality of manufactured products – such as medical face masks. One of the methods of improving the quality of manufactured medical masks and production supervision is the use of the so-called Management and Organizational Science (MOS). The article discusses the general rules of conduct for quality and measurement control of type II medical mask. Two mutually complementary - visual and laboratory research methods were used in the mask quality control process. These methods made it possible to obtain the most reliable results, and to react quickly and reliably, yet not in a too complicated manner, in the event of occurrence of a visible product defect in order to produce a repeatable and high-quality products.
Źródło:
Technologia i Jakość Wyrobów; 2021, 66; 20-32
2299-7989
Pojawia się w:
Technologia i Jakość Wyrobów
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of quality control of the graphite process on the example of a company from the automotive industry
Autorzy:
Pacana, Andrzej
Czerwińska, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/326857.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
production process
quality control
visual quality control
PFMEA method
proces produkcyjny
kontrola jakości
wizualna kontrola jakości
metoda PFMEA
Opis:
The visual method is one of the most important control methods in spite of the developing information technologies and very high automation of the production process. The aim of the article is to analyze the quality control of a selected part of the production process of pistons for passenger cars, for which the visual method is used, and to evaluate the application of this method as well as its influence on the improvement of the presented production process. The analysis made it possible to assess the impact of the type of non-compliance and location on the effectiveness of controls. Thanks to the analysis carried out, the dominant influence of factors, which depend on the person performing the control, on the effectiveness of the control was found.
Źródło:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska; 2019, 134; 171-180
1641-3466
Pojawia się w:
Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical properties of a control design of controls provided by supreme chamber of control
Autorzy:
Zieliński, Wojciech
Powiązania:
https://bibliotekanauki.pl/articles/453333.pdf
Data publikacji:
2010
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
statistical quality control
alternative rating
experimental design
Opis:
In statistical quality control objects are alternatively rated. It is of interest to estimate a fraction of negatively rated objects. One of such applications is a quality control provided by Supreme Chamber of Control (NIK) to find out a percentage of abnormalities in the work among others of tax offices. Mathematical details of experimental designs for alternatively rated phenomena are given in Karliński (2003). There are given requirements for sample sizes, numbers of negative rates, accuracy of estimation and error risks. In the paper, some statistical properties of given plans are investigated.
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2010, 11, 1; 158-166
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality control and inspection of bevel gears of the aircraft gearbox utilizing the ATOS 3D scanner
Autorzy:
Marciniec, A.
Budzik, G.
Dziubek, T.
Grzelka, M.
Powiązania:
https://bibliotekanauki.pl/articles/248064.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
bevel gears
3D scanning
quality control
Opis:
Quality control gears o aircraft gearbox has become a key component in today's manufacturing process. Optical 3D scanning, based on the principle of fringe projection, has proven to be both an accurate and cost-effective alternative delivering more dimensional information to aid in quality control and process optimization by creating more meaningful measuring reports. The ATOS 3D BLUE LIGHT optical scanner has a unique capability of being user-configurable to address various measuring requirements. This is accomplished via the user’s ability to change measuring volumes in minutes, in order to increase scan data resolution or increase the measuring field of view. The paper present the opportunity to automate the measurement process of bevel gears, using coordinated optical scanner ATOS 3D "white light" version and "blue light" version. Using coordinate measuring technique, you can specify a set of methods and procedures for the designation of the complex dimensions of physical objects and transform them into a computer program space of coordinate measuring devices. The topics included in the article are intended to show the capabilities of the device used to improve the measurement process and shorten its time, and hence, lower its costs in both version of ATOS Scanner. Another thing described in the paper is the impact of measurement performance in automatic mode on the quality of performance - the numerical image of scanned surface, from the standpoint of accuracy and number of collected data points in the shortest time. The article includes an analysis of conditions related to the measurement works, such as the process of preparing the model and measurement equipment and data processing capacity.
Źródło:
Journal of KONES; 2012, 19, 1; 261-266
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production and quality control of 65Zn radionuclide
Autorzy:
Rowshanfarzad, P.
Jalilian, A.
Sabet, M.
Powiązania:
https://bibliotekanauki.pl/articles/148866.pdf
Data publikacji:
2005
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
zinc-65
production
cyclotron
radiochemical separation
quality control
Opis:
Zinc-65 was produced in the Nuclear Research Center for Agriculture and Medicine (NRCAM) by the bombardment of natural copper targets with 30 MeV protons via the 65Cu(p,n)65Zn nuclear reaction. Natural copper was used instead of enriched 65Cu because of the quick decay of undesired radioisotopes. It was also more desirable for cost effectiveness. Cross-section calculations were performed by ALICE nuclear code and the results were compared with the experimental data given in the literature, which showed good agreement. A 160 mi m copper layer target was bombarded with a 150 miA current of 30 MeV protons for 20 min, which resulted in 170 MBq activity of 65Zn product. The yield was 3.4 MBq/miAh. The concentration of the product was 6.8 MBq/ml. Radiochemical separation was carried out by anion exchange chromatography with the yield of about 98%. Quality control of the final product showed a radionuclide purity of more than 98% and no traces of possible impurities (copper) were detected by a colorimetric method with a 1 ppm detection limit using dithizone as the reagent. The materials used for targetry and chemical separation were quite cost-effective.
Źródło:
Nukleonika; 2005, 50, 3; 97-103
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assay of the Insensitive High Explosive 3-Nitro-1,2,4-triazol-5-one (NTO) by Acid-Base Titration
Autorzy:
Nandi, A. K.
Singh, S. K.
Kunjir, G. M.
Singh, J.
Mandal, A. K.
Pandey, R. K.
Powiązania:
https://bibliotekanauki.pl/articles/358351.pdf
Data publikacji:
2013
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
NTO
purity
acid-base titration
HPLC
quality control
Opis:
The insensitive high explosive 3-nitro-1,2,4-triazol-5-one (NTO) is a weak acid (pKa 3.76) due to the labile N–H bond. The weakly acidic character of this compound is exploited for its assay by aqueous acid-base titration. The NTO sample was dissolved in water and the resultant solution was titrated against 0.07 N NaOH solution using phenolphthalein as indicator. Regular batch samples were assayed by this method and the results were compared with those obtained by the HPLC method. The aqueous acid-base titration method was found to be suitable for the quality control of the product.
Źródło:
Central European Journal of Energetic Materials; 2013, 10, 1; 113-122
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wielofunkcyjna ocena jakości urządzeń technologicznych i wyrobów
Multifunctional quality estimation of technological devices and products
Autorzy:
Gawlik, J.
Sładek, J.
Ryniewicz, A.
Kowalski, M.
Gąska, A.
Powiązania:
https://bibliotekanauki.pl/articles/269750.pdf
Data publikacji:
2010
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
kontrola jakości
tomografia komputerowa
quality control
computer tomography
Opis:
W pracy przedstawiono wybrane zagadnienia dotyczące oceny jakości procesów technologicznych oraz wyrobów. Przedstawiono sposoby oceny jakości za pomocą wskaźników zdolności maszyn i urządzeń na bazie metodyki SPC. Zamieszczono także ocenę dokładności wyrobów z wykorzystaniem rentgenowskiej tomografii komputerowej. Do oceny zaproponowano wzorce przestrzenne oraz strategię umożliwiającą porównanie urządzeń pomiarowych względem siebie i ocenę dokładności odwzorowania badanych wyrobów.
Chosen aspects of quality estimation of technological processes and products were presented in this paper. Methods of quality estimation which use process and machine capability indices according to SPC framework were also presented. Next part of paper concerns topics connected with products accuracy evaluation using Computed Tomography. Spatial standards were proposed to use in accuracy evaluation. Paper also shows strategy of comparison of different metrological devices in order to evaluate accuracy of shape mapping of measured products.
Źródło:
Inżynieria Maszyn; 2010, R. 15, z. 3; 20-34
1426-708X
Pojawia się w:
Inżynieria Maszyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Influence of Choice of Methods of Checking on Total Quality Control Costs
Wpływ wyboru metody sprawdzania na całkowite koszty kontroli jakości
Autorzy:
Chmielińska, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/905656.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
statistical quality control
acceptance sampling
acceptance sampling costs
Opis:
Acceptance sampling is commonly used in factories, because it decreases the probability of giving defective batch to the customer. From two distinguished ways of acceptance sampling, more frequently in practice is used an attribute sampling method. The purpose of this article is to emphasize the benefits of using acceptance sampling by variables.
Kontrola odbiorcza jest powszechnie stosowana w przedsiębiorstwach produkcyjnych, gdyż zmniejsza ona prawdopodobieństwo przekazania klientowi wadliwej partii produktów. Z wyróżnionych dwóch sposobów kontroli odbiorczej częściej wykorzystywana w praktyce jest kontrola według oceny alternatywnej. Celem niniejszego artykułu jest podkreślenie korzyści wynikających ze stosowania liczbowych planów kontroli odbiorczej.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2013, 285
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Which control chart is the best for the particleboard industry: Shewhart, CUSUM or EWMA?
Autorzy:
Kurt, Rifat
Karayilmazlar, Selman
Powiązania:
https://bibliotekanauki.pl/articles/2067430.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
Tematy:
Statistical Quality Control
particleboard industry
Shewhart
CUSUM
EWMA
Opis:
In this study, control charts were prepared using data received from a particleboard manufacturer to determine the factors that impair quality, and the most suitable control charts for the company were specified accordingly. The study material consisted of the tensile strength values of boards taken from a factory over three months. Shewhart, CUSUM and EWMA control charts were used for variable quantities to achieve the targeted quality level. It was concluded from the research that interdependent and independent evaluation of the data observed during particleboard manufacturing was required; therefore, the combined use of CUSUM and Shewhart control charts was proposed.
Źródło:
Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2021, 64, 208; 95--117
1644-3985
Pojawia się w:
Drewno. Prace Naukowe. Doniesienia. Komunikaty
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
(Brak) kontroli jakości urządzeń ultrasonograficznych
(Lack of) quality control of ultrasound devices
Autorzy:
Jędrzejewska, Monika
Węckowski, Bartosz
Jankowski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2146813.pdf
Data publikacji:
2021
Wydawca:
Indygo Zahir Media
Tematy:
ultrasonografia
kontrola jakości
sonda
ultrasonography
quality control
probe
Opis:
Kontrola jakości aparatury ultrasonograficznej budzi wiele kontrowersji. W Polsce opiera się ona na błędnym założeniu, że ultrasonografia jest nieszkodliwa, nie powinna zatem podlegać takiej kontroli jak metody diagnostyczne bazujące na promieniowaniu jonizującym. Powyższe nie eliminuje jednak potrzeby prowadzenia testów kontroli jakości. Kryterium braku szkodliwości nie zmienia faktu, że nieprawidłowe funkcjonowanie systemu obrazowania może stanowić zagrożenie dla zdrowia i życia pacjentów ze względu na błędną diagnozę. W artykule zaproponowano schemat postępowania w zakresie oceny ultrasonografów, sond, protokołu pomiarowego oraz uzyskanych wyników i weryfikacji poprawności rejestracji obrazu.
The quality control of the ultrasound equipment is controversial. In Poland, it is based on the erroneous assumption that ultrasonography is harmless, therefore it should not be subject to such control as diagnostic methods based on ionizing radiation. However, the above does not eliminate the need to conduct quality control tests. The non-harmfulness criterion does not change the fact that improper functioning of the imaging system may pose a threat to the health and life of patients due to incorrect diagnosis. The article proposes a procedure for the assessment of ultrasound scanners, probes, measurement protocol, the obtained results and verification of the correctness of image registration.
Źródło:
Inżynier i Fizyk Medyczny; 2021, 10, 1; 69--75
2300-1410
Pojawia się w:
Inżynier i Fizyk Medyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A human quality control system in furniture manufacturing – a pilot study
Autorzy:
Śmietańska, Katarzyna
Podziewski, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/24072084.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
human visual quality control
melamine-faced MDF
milling
Opis:
A human quality control system in furniture manufacturing – a pilot study. The article presents the results of pilot studies in which an attempt was made to check what the subjectivity of visual inspection looks like during the control of MDF delamination process in the milling process. 100% match of assessors’ scores was obtained only with low (VB = 0–0.08mm) and high (VB = 0.3–0.33mm) tool wear. In addition, the impact of gender on the results was significant. Women rated items less restrictively. Based on the results obtained, one can expect a problem with subjectivity when using a single-person human quality control system.
Kontrola jakości przez człowieka w produkcji mebli - badanie pilotażowe. W artykule zaprezentowano wyniki badań pilotażowych, w których podjęto próbę sprawdzenia jak wygląda problem podmiotowość kontroli wzrokowej podczas kontroli procesu delaminacji MDF w procesie frezowania. Stuprocentową zgodność ocen sędziów otrzymano jedynie przy niskim (VB=0–0,08mm) oraz wysokim (VB=0,3–0,33 mm) zużyciu narzędzia. Ponadto wpływ płci na wyniki okazał się istotny. Kobiety oceniały przedmioty mniej restrykcyjnie. Na podstawie otrzymanych wyników można spodziewać się problemu z subiektywnością w przypadku zastosowania jednoosobowego systemu kontroli jakości przez człowieka.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 108; 93--96
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical basis of service sphere influence on quality and living standard of the population
Autorzy:
Bektemirov, Abdumalik
Powiązania:
https://bibliotekanauki.pl/articles/1178061.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Service
effect
life standard
quality control
service types
Opis:
This paper makes theoretical analyses on service sphere of Uzbekistan with deep scrutinizes. Moreover, investigations on quality and living standard of the population make possible conclusions over effects on topic. Furthermore, investigations make theoretical suggestions on service field while showing up better recommendations as whole.
Źródło:
World Scientific News; 2018, 95; 149-158
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the reliability of measurement testing
Autorzy:
Volodarsky, E. T.
Warsza, Z. L.
Kosheva, L. A.
Idźkowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/114587.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
quality control
reliability assessment
measurement inspection
decision making
Opis:
There is proposed the application of an auxiliary quantity, homogeneous with the measured one, in the quality control of an object made with the use of measuring channel and processing and decision making module. The result of processing of this quantity in the measurement channel is applied for the additive and multiplicative correction of decision limits. This allows to reduce the impact of imperfect processing characteristics of measuring channel. The significant effectiveness of such correction, at different ratio of the components of processing error is presented. The influence of errors of forming auxiliary quantity is also considered.
Źródło:
Measurement Automation Monitoring; 2015, 61, 5; 136-139
2450-2855
Pojawia się w:
Measurement Automation Monitoring
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
APPLICATION OF ION PAIR RP–HPLC METHOD IN PHARMACEUTICAL QUALITY CONTROL DISSOLUTION TESTING FOR SIMULTANEOUS ESTIMATION OF COMBINED TABLET DOSAGE FORMS WITH ACETYLSALICYLIC ACID AND GLYCINE
Autorzy:
Kowalska, Malgorzata K.
Wozniak, Magdalena
Kijek, Michal
Krawczyk, Monika
Janas, Slawomir
Powiązania:
https://bibliotekanauki.pl/articles/895575.pdf
Data publikacji:
2018-06-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
quality control
method validation
acetylsalicylic acid
glycine
dissolution
Opis:
The aim of the paper was to present the possibility of applying the novel method (RP-HPLC ion pair method) for the simultaneous dissolution determination of combined tablet dosage form containing acetylsalicylic acid and glycine in pharmaceutical industry. The samples were gradient eluted using a Pursuit XS Ultra C18 column (150x3.0 mm, with a particle size of 2.8µm) with variable composition of mobile phase A (1-heptanesulfonic acid sodium salt aqueous solution (2.8 g/L), pH 2.2 ± 0.05 adjusted with orthophosphoric acid) and phase B (methanol). The detection was carried out at 210 nm with a consist flow rate of 0.4 mL min−1. The method was validated by determining precision (repeatability and intermediate precision), accuracy, specificity, linearity, range, system suitability, robustness and stability in accordance with ICH guidelines. The method was accurate, precise and linear within the range of 0.03 – 0.18 mg mL−1 for acetylsalicylic acid and 0.016 – 0.096 mg mL−1 for glycine. The method is simple, convenient and suitable for analyzing acetylsalicylic acid and glycine in pharmaceutical formulations. The method could also be used for routine assay determination after small modification of sample preparation.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 3
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
PURITY DETERMINATION OF THE STARTING MATERIALS USED IN THE SYNTHESIS OF PHARMACEUTICAL SUBSTANCES
Autorzy:
Groman, Aleksandra
Stolarczyk, Elżbieta
Mucha, Mariola
Powiązania:
https://bibliotekanauki.pl/articles/895661.pdf
Data publikacji:
2019-02-28
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
quality control
Imatinib
BOSENTAN
gas chromatography
method validation
Opis:
High requirements on the API quality mean that the quality control of the starting material is crucial to the manufacturing process of drug substances. Three sensitive methods for the purity determination of the following starting materials: ethylene glycol (method I), 3-acetylpyridine (method II) and 4-chloromethyl-5-methyl-1,3-dioxol-2-one (method III) used in the synthesis of selected drug substances were developed using GC-FID techniques. All the methods were validated according to the International Conference on Harmonization guidelines. The correlation coefficient values were found about 0.99. The obtained RSD values from the replicate injections in the range of 20 - 120% of the nominal concentration ensured the precision.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 1; 29-35
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production, quality control and initial imaging studies of [82mRb]RbCl for PET studies
Autorzy:
Rowshanfarzad, P.
Jalilian, A.
Kiyomarsi, M.
Sabet, M.
Karimian, A.
Moradkhani, S.
Mirzaii, M.
Powiązania:
https://bibliotekanauki.pl/articles/146165.pdf
Data publikacji:
2006
Wydawca:
Instytut Chemii i Techniki Jądrowej
Tematy:
rubidium-82m
quality control
animal study
cyclotron
Opis:
Rubidium-82m was prepared via 15.4 MeV proton irradiation of a krypton-82 gaseous target (30% enrichment). Washing the target chamber with hot water yielded a Rb-82m containing solution, which was further purified using short column chromatography in order to remove organic/inorganic impurities. The flowthrough was formulated in normal saline for injection. Radionuclide, radiochemical and chemical purity tests were performed prior to administration to rats for imaging (radiochemical yield: 95-97%, radiochemical purity > 97%). Preliminary dual-head coincidence studies were performed to determine the distribution of [82mRb]Rb in normal rats. For biodistribution studies, Rb-81 was injected to rats and tracer accumulation in heart, GI and bladder was determined after sacrification in time intervals. A yield of 1.3 GBq at EOB, 235.7 MBq/mAh was obtained.
Źródło:
Nukleonika; 2006, 51, 4; 209-215
0029-5922
1508-5791
Pojawia się w:
Nukleonika
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data mining model for quality control of primary aluminum production process
Autorzy:
Horvath, M.
Vircikova, E.
Powiązania:
https://bibliotekanauki.pl/articles/406754.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
quality control analysis
data mining
multivariate autocorrelated process
quality improvement
Opis:
Traditional statistical process control approaches are less effective in dealing with multivariate and autocorrelated processes. With the continual increase in process complexity, this inefficiency is becoming more apparent. A special type of multivariate and autocorrelated process is a process occurring within a heterogeneous production environment (a variety of types of machines, pots, etc. used for the same task). This makes the quality control of such processes more difficult. The approach presented in the paper utilizes time series fitting, cluster analysis and association mining in relation to a single data mining model for the analysis of complex multivariate autocorrelated processes. The aim is to divide the production cells (machines, pots, etc.) into groups exhibiting similar behaviors. This can then be used for more effective quality control of the entire process and afterwards to analyze the reasons for this behavior. This paper includes someof the results obtained from applying the model to an actual multivariate high autocorrelated process, the production of primary aluminum using the Hall-Heroult electrolysis process. The Hall-Heroult electrolysis process is a continual process that is ongoing in several pots simultaneously. The average plant operates 300 pots. Therefore, the quality control of such a complex process faces many issues concerning monitoring and problem diagnosis. The paper describes a method for dividing the pots into control groups exhibiting similar behaviors, which can then be used in the planning phase of the quality control analysis and to make improvements within these groups and thereby within the whole process.
Źródło:
Management and Production Engineering Review; 2012, 3, 4; 47-53
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria approach to comparison of inspection allocation for multi-product manufacturing systems in make-to-order sector
Autorzy:
Korytkowski, P.
Wiśniewski, T.
Zaikin, O.
Powiązania:
https://bibliotekanauki.pl/articles/971015.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
production line
queuing network
quality control
make-to-order
Opis:
This paper studies multi-product production manufacturing systems with in-line quality control. Quality control is carried at inspection stations located within a production line. Quality control has an impact on performance of the system: throughput decreases and resource utilization increases. Production lines are modeled as a multi-product Open Jackson Network, where stochastic character of routing is a result of quality control operations. Quality inspection can result in feedback to a work station of the manufacturing system. The approach developed allows for comparing different inspection allocations using three principal indices: overall cost, lead-time and equipment utilization.
Źródło:
Control and Cybernetics; 2010, 39, 1; 97-116
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geostatystyczna analiza parametrów złoża węgla brunatnego w funkcji postępów projektowanej eksploatacji
Geostatistical analysis of lignite deposit parameters in the function of the operation progress
Autorzy:
Wasilewska-Błaszczyk, M.
Naworyta, W.
Powiązania:
https://bibliotekanauki.pl/articles/216460.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Gospodarki Surowcami Mineralnymi i Energią PAN
Tematy:
węgiel brunatny
geostatystyka
sterowanie jakością
lignite
geostatistics
quality control
Opis:
Przedmiotem badań była analiza jakości kopaliny w planowanym do zagospodarowania złożu węgla brunatnego Gubin. Analizy i ich wyniki odnoszące się do długoterminowego planowania eksploatacji mają istotne znaczenie dla określenia parametrów technologicznych elektrowni, w której będzie produkowana energia na bazie węgla brunatnego ze złoża Gubin. Oszacowanie średniej miąższości pokładów (M) i wartości opałowej węgla (Qir) wykonano dla obszarów złoża w granicach pięcioletnich postępów eksploatacji dla dwóch planowanych do eksploatacji pokładów węgla II i IV. Szacowanie średnich wartości parametrów i prognozę błędów tych oszacowań wykonano z wykorzystaniem metody krigingu poligonowego, opartej na założeniach krigingu zwyczajnego w odmianie blokowej. Oszacowana w pięcioletnich okresach eksploatacji średnia miąższość pokładu II przyjmuje wartości od 9,5 do 13,8 m, natomiast pokładu IV od 5,6 do 15,6 m. Zakres średnich wartości opałowych węgla w granicach projektowanych pięcioletnich postępów eksploatacji w obu pokładach jest zbliżony i przyjmuje wartości: w pokładzie II od 8,5 do 9,7 MJ/kg, w pokładzie IV od 8,1 do 10,4 MJ/kg. Parametry w obydwu pokładach naprzemiennie przyjmują średnie wartości maksymalne i minimalne. W pięcioletnich okresach eksploatacji, w których w pokładzie II obserwuje się niską wartość opałową węgla, w pokładzie IV przeciwnie, występują wartości wysokie. Dzięki temu zjawisku możliwe jest utrzymanie wartości opałowej złoża na określonym poziomie poprzez odpowiednie mieszanie węgla dostarczanego z obydwu pokładów. Korzystny efekt równoległej eksploatacji obydwu pokładów ilustrują przedstawione na wykresach wypadkowe wielkości miąższości pokładów II i IV oraz wartości opałowych węgla. [...]
The subject of this paper is an analysis of the lignite quality parameters in the Gubin lignite deposit. Analyses relate to long-term operation plan. Results of analyses are important for determining the technological parameters of the power plant, which will produce energy basing on the Gubin lignite deposit. The average value of lignite parameters has been estimated for areas within the planned five-year progress of the operation. Analyses were performed for two lignite beds – II and IV, which has been designed for parallel exploitation. The estimation of the parameters average values together with the estimation errors has been calculated using the polynomial kriging method, based on the assumptions of ordinary kriging in a variation of the block kriging. The estimated five-year operating periods in the average thickness of the seam II takes values from 9.5 to 13.8 m; in case of the seam IV – from 5.6 to 15.6 m. Ranges of calorific values estimated in five-year periods in the both seams are similar, and takes values in the seam II of 8.5 to 9.7 MJ/kg; in the seam IV from 8.1 to 10.4 MJ/kg. The parameters of both deposit seams take the average maximum and minimum values alternately. In periods, in which the lignite of the seam II has a low calorific value in the seam IV on the contrary values are high. Thus random phenomenon is possible to maintain the calorific value at the certain level mixing the lignite supplied from the both exploited seams. The total calorific value illustrate the beneficial effect resulting from parallel operation of seams II and IV. [...]
Źródło:
Gospodarka Surowcami Mineralnymi; 2015, 31, 3; 77-91
0860-0953
Pojawia się w:
Gospodarka Surowcami Mineralnymi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vision-based Online Defect Detection of Polymeric Film via Structural Quality Metrics
Autorzy:
Rawashdeh, Nathir
Hazaveh, Paniz
Altarazi, Safwan
Powiązania:
https://bibliotekanauki.pl/articles/2201189.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
industrial inspection
quality control
defect detection
polymer film
vision
Opis:
Nondestructive and contactless online approaches for detecting defects in polymer films are of significant interest in manufacturing. This paper develops vision-based quality metrics for detecting the defects of width consistency, film edge straightness, and specks in a polymeric film production process. The three metrics are calculated from an online low-cost grayscale camera positioned over the moving film before the final collection roller and can be imple mented in real-time to monitor the film manufacturing for process and quality control. The objective metrics are calibrated to correlate with an expert ranking of test samples, and results show that they can be used to detect defects and measure the quality of polymer films with satisfactory accuracy.
Źródło:
Management and Production Engineering Review; 2023, 14, 1; 61--71
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors related to musculoskeletal disorders in quality control palm workers at palm purchasing establishments in Sichon District, Nakhon Si Thammarat, Thailand
Autorzy:
Mongkonkansai, J.
Thanapop, C.
Madardam, U.
Cheka, A.
Epong, A.
Arwae, A.
Powiązania:
https://bibliotekanauki.pl/articles/2085624.pdf
Data publikacji:
2020
Wydawca:
Instytut Medycyny Wsi
Tematy:
musculoskeletal disorders
quality control palm workers
palm purchasing establishments
Opis:
Introduction and objective. The palm quality selection process has risks of problems in ergonomics. The aim of this research is to study the factors related to musculoskeletal disorders in quality control palm workers at palm purchasing establishments in Sichon District, Nakhon Si Thammarat, Thailand. Materials and method. A cross-sectional study was conducted with 50 workers with musculoskeletal disorders, as assessed by the Bureau of Occupational and Environmental Disease, Ministry of Public Health, Thailand. Ergonomic risk assessment was performed using the Rapid Entire Body Assessment (REBA), and the data studied with the help of descriptive statistics and chi-square analyses. All data were analyzed using SPSS version 19. Results. The sample included 96% of males with an average age of 34.2 years (SD=11.09). The participants used pickup trucks to transport palm oil from the plantation. 72% of the workers had worked at the plantation for 4.9±4.9 years; 54% did not work overtime. The average amount of palm oil collection for palm quality control was 23.5±11.3 tons/day. Quality control palm workers using sidecars (28%) were found to be moderately at risk, and those using trucks (72%) were at a high level of risk. The prevalence of musculoskeletal disorders after one year at work was 78%. The amount of palm oil controlled per day, working overtime, car type used for transport, and ergonomics risk level, were significantly related to musculoskeletal disorders in quality control palm workers (p-value <0.05). Conclusions. The results indicate a need for the top management and health-related personnel to promote occupational health and safety measures for quality control palm workers.
Źródło:
Annals of Agricultural and Environmental Medicine; 2020, 27, 2; 207-210
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving Production Efficiency of Large Size Molds as a Result of Innovative Quality Control Process
Autorzy:
Skowron-Grabowska, B.
Jasiński, J.
Jasińska, A.
Beňo, P.
Paško, J.
Powiązania:
https://bibliotekanauki.pl/articles/2064993.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
spotting process
quality control
large size molds
OEE index
Opis:
One of the basic elements of the technological chain of manufacturing products in the European Union is the metal processing sector, which is one of the dynamically developing industries. An important department in the aforementioned sector is the production of unconventional, large-size injection molds and tools weighing more than 10 tons. Very often large-size components in the production process must be precisely checked and subjected to appropriate corrective actions at the quality control stage, in order to avoid non-compliance with customer requirements, and thus increased costs related to reducing production efficiency, logistics of large-size elements from the customer back to the manufacturer of the mold in order to correct it, and also complaints of the final product connected with dimensional changes and surface defects in the casting process. This paper presents a case study of the implementation of the innovative quality control process to verify the production of large-size molds for aluminum high pressure casting with the spotting press machine, allowing for product quality improvement. The introduction of the innovative press for spotting molds to the quality control stage also leads to the improvement of production efficiency, which was confirmed by the results of an increase of the OEE coefficient in the entire production process. In addition, a significant reduction in the production time of products was achieved, and the cost of the mold production process was lowered.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 457--465
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biobank Łódź – population based biobank at the University of Łódź, Łódź, Poland
Autorzy:
Dobrowolska, Sylwia
Michalska-Madej, Joanna
Słomka, Marcin
Sobalska-Kwapis, Marta
Strapagiel, Dominik
Powiązania:
https://bibliotekanauki.pl/articles/895829.pdf
Data publikacji:
2019-06-04
Wydawca:
Gdański Uniwersytet Medyczny
Tematy:
biobank
population biobank
sample quality control
BBMRI-ERIC
data
Opis:
Biobank Laboratory of the University of Lodz is a unit in the organizational structure of the Department of Molecular Biophysics at the Faculty of Biology and Environmental Protection. It was established in 2014 as one of the results of the TESTOPLEK project. One of the main goals of the unit is to collect and share biological material of human origin and related clinical and survey data. Moreover, Biobank Laboratory conducts work in the field of genetics and molecular biology on human biological material. Biobank Laboratory gathers over 40.000 samples such as DNA, FFPE, saliva, together with their data. Data about collections is available for researchers in directories e.g. BBMRI-ERIC Directory 4.0. Since 2014, the unit belongs to the national Consortium BBMRI.pl, and since 2017 it executes a project entitled Research Infrastructure for Biobanks and Biomolecular Resources BBMRI-ERIC, co-creating the Polish Network of Biobanks. Biobank Laboratory is focused on cooperation with domestic and foreign scientific institutions and medical units, as well as entities from the local, business and public sector.
Źródło:
European Journal of Translational and Clinical Medicine; 2019, 2, 1; 85-95
2657-3148
2657-3156
Pojawia się w:
European Journal of Translational and Clinical Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of a colourimetric method for quality control of sausage products produced using chitinous food additives
Autorzy:
Murashеv, Sergey V.
Elena A. Gorlach, Elena A. Gorlach
Chertov, Alexander N.
Gorbunova, Elena V.
Kiprushkina, Elena I.
Powiązania:
https://bibliotekanauki.pl/articles/1034110.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Tematy:
calcium
dietary supplement
dry-cured sausage
quality control
‘Hizitel’
Opis:
A crucial technological task that must be solved in the production of sausage products is to stabilize the product’s red colour. In this paper, we propose a scheme to determine the most significant parameters of the quality of dry-cured sausages by their colour characteristics. For this purpose, colour digital images were obtained, which were further processed using two classical colour representation systems: RGB and xyY. We monitored changes in pH and the ratio of water to dry matter in meat products. These crucial sausage properties were changed by introducing chitin-containing supplements into their recipes, which allowed us to solve two tasks simultaneously. The first comprises, as already mentioned, changing the properties of sausages to obtain correlations with colour characteristics. The second is to enrich meat products with chitin complex for preventive purposes to improve people’s nutrition. The construction of correlation dependencies using each coordinate separately in two colour systems showed that each system (RGB and xyY) has one colour channel with a maximum correlation coefficient. This is due to the colour features of sausages, which can be represented to the greatest extent with the help of only one colour coordinate in the considered colour representation systems (RGB and xyY). Using these colour coordinates will allow one to achieve maximum measurement accuracy. Thus, two tasks are being solved: the enrichment of food with dietary supplement and the development of a method to control their content.
Źródło:
Progress on Chemistry and Application of Chitin and its Derivatives; 2020, 25; 151-163
1896-5644
Pojawia się w:
Progress on Chemistry and Application of Chitin and its Derivatives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of extreme control system of coal cleaning in jigs
Sintez ehkstremalnojj sistemy upravlenija processom obogashhenija uglja v otsadohnojj mashine
Autorzy:
Pismensky, A.
Ulshin, V.
Powiązania:
https://bibliotekanauki.pl/articles/792639.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
control system
coal cleaning
coal preparation
quality control
beneficiation process
automatic device
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 2
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the manufacturing process of aluminium RIMS
Autorzy:
Czerwińska, Karolina
Pacana, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1831328.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
management engineering
quality engineering
quality control
inżynieria zarządzania
inżynieria jakości
kontrola jakości
Opis:
The aim of the study was to indicate the reasons for non-compliance of aluminium rim castings and, using quality management instruments (Pareto-Lorenzo diagram and 5WHy method?), elimination or reduction of non-compliant products. The object of the research was an aluminium rim, while the diagnostic process of the object of the research was based on the quality control of the chemical composition of the casting, the control of mechanical properties and the control of the continuity of the material structure by radiographic and microscopic methods. On the basis of the research carried out, it was found that a sensitive casting area is the front edge of the rim rim - a significant number of porosity clusters were identified in this area. The reason for their occurrence was also specified - too rapid flooding of moulds, which resulted in gassing of the alloy. The identified cause had its origins in human resources mismanagement, namely the lack of training of the newly recruited employee. So far, the company has not carried out analyses of quality problems with the use of a sequential quality management methodology, so the implemented corrective actions have not always led to the full achievement of quality objectives. The presented sequential method, which is a combination of diagnostic and control tests and quality management instruments, is a universal way to monitor the level of quality of products and to quickly correct nonconformities.
Źródło:
System Safety : Human - Technical Facility - Environment; 2021, 3, 1; 38-46
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality management of aluminum pistons with the use of quality control points
Autorzy:
Ostasz, Grzegorz
Czerwińska, Karolina
Pacana, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/409751.pdf
Data publikacji:
2020
Wydawca:
STE GROUP
Tematy:
aluminum piston
non-destructive testing
production process
quality control point
quality management
Opis:
The publication analyses the way of managing and improving the quality of the production process of aluminum pistons for internal combustion engines. The aim of the article is to propose a method of analysis of the effectiveness of individual control methods used in the process of controlling the aluminium piston. Thanks to the location of a control point with the highest share of product non-compliance detection in the production process, it is possible to reduce quality control points by less effective points, which will contribute to lower costs or shorten the time of production processes. In view of the increasing demands on the efficiency of the checkpoints for components in internal combustion engines, the issue is important and topical.
Źródło:
Management Systems in Production Engineering; 2020, 1 (28); 29-33
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experiments with three-dimensional radar reflectivity data assimilation into the COAMPS model
Autorzy:
Jakubiak, B.
Szturc, J.
Ośródka, K.
Jurczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/108601.pdf
Data publikacji:
2014
Wydawca:
Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Tematy:
weather radar
numerical weather prediction
radar reflectivity
quality control
assimilation
Opis:
High temporal and spatial resolution of radar measurements enables to continuously observe dynamically evolving meteorological phenomena. Three-dimensional (3D) weather radar reflectivity data assimilated into the numerical weather prediction model has the potential to improve initial description of the atmospheric model state. The paper is concentrated on the development of radar reflectivity assimilation technique into COAMPS mesoscale model using an Ensemble Kalman Filter (EnKF) type assimilation schemes available in Data Assimilation Research Testbed (DART) programming environment. Before weather radar data enter into the assimilation system, the measurement errors are eliminated through quality control procedures. At first artifacts associated with non-meteorological errors are removed using the algorithms based on analysis of reflectivity field pattern. Then procedures for correction of the reflectivity data are employed, especially due to radar beam blockage and attenuation in rain. Each of the correction algorithms is connected with generation of the data quality characteristic expressed quantitatively by so called quality index (QI). In order to avoid transformation of data uncertainty into assimilation scheme only the radar gates successfully verified by means of the quality algorithms were employed in the assimilation. The proposed methodology has been applied to simulate selected intense precipitation events in Poland in May and August 2010.
Źródło:
Meteorology Hydrology and Water Management. Research and Operational Applications; 2014, 2, 1; 43-54
2299-3835
2353-5652
Pojawia się w:
Meteorology Hydrology and Water Management. Research and Operational Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigating individual differences with qualitative research methods: Results of a meta-analysis of leading applied linguistics journals
Autorzy:
Albert, Ágnes
Csizér, Kata
Powiązania:
https://bibliotekanauki.pl/articles/2143611.pdf
Data publikacji:
2022-06-21
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
qualitative research
individual differences
quality control
meta-analysis
systematic review
Opis:
The aim of the present article is to provide a systematic review of qualitative studies in the leading journals of our field focusing on their distributional properties in the various journals as well as topic choice and selected quality control issues. In order to achieve this aim, we carried out a systematic review of research articles published in leading journals in our field, namely, Applied Linguistics, Language Learning, Language Teaching Research, Studies in Second Language Acquisition and Modern Language Journal between 2016 and 2020. Our sample contains 93 articles in which researchers employed qualitative research methods or mixed methods including a qualitative component. Our main results indicate that there is great variation among journals in terms of the number of qualitative studies. As for topic considerations, some traditional individual difference variables seem to have a dominant role, with cognitive processes involved in language acquisition gaining some ground as well. Concerning quality control issues, there could be room for improvement with regard to reporting the quality control measures, including the tools employed in the studies. Based on our results, we can conclude that a more systematic understanding of acceptable processes in the field of applied linguistics could increase not only the number of qualitative articles published but also their topical importance.
Źródło:
Studies in Second Language Learning and Teaching; 2022, 12, 2; 303-335
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Visual inspection as one of the important elements of the quality control
Autorzy:
Szklarzyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/111761.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
quality control
visual control
BOST method
kontrola jakości
kontrola wizualna
metoda BOST
Opis:
Quality control of the production process allows to detect incompatibilities. One of the key elements of quality control is a visual inspection. The object of the research is to determine the essential elements having an impact on visual inspections. Research was carried out according to the BOST method designed at the Institute of Production Engineering, Technical University of Czestochowa.
Źródło:
Production Engineering Archives; 2014, 2, 1; 9-11
2353-5156
2353-7779
Pojawia się w:
Production Engineering Archives
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Kryteria jakościowe stosowane w umowach o świadczenie usług przewozowych w dużych miastach i sposoby ich kontroli
Quality criteria applied in the contracts for transport services in big cities and methods of its controlling
Autorzy:
Ciastoń-Ciulkin, A.
Powiązania:
https://bibliotekanauki.pl/articles/193556.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
transport zbiorowy
jakość
kryteria jakościowe
kontrola jakości
public transport
quality
quality criteria
quality control
Opis:
W Polsce, zasady zawierania umów na świadczenie usług przewozowych w publicznym transporcie zbiorowym reguluje Ustawa o publicznym transporcie zbiorowym z dnia 16 grudnia 2010 r . Zgodnie z ustawą każda umowa przewozowa powinna zawierać w swojej treści m.in. warunki dotyczące norm jakości oraz podnoszenia jakości usług świadczonych w zakresie publicznego transportu zbiorowego. W związku z tym artykuł stanowi przegląd stosowanych kryteriów jakościowych w umowach przewozowych zawieranych w dużych miastach w Polsce (powyżej 250 tys. mieszkańców). Analizie poddano 9 aktualnie obowiązujących umów przewozowych w Warszawie, Krakowie, Łodzi, Wrocławiu, Poznaniu, Gdańsku, Gdyni, Katowicach i Lublinie. W pierwszej części artykułu przedstawiono kryteria jakościowe wymagane do spełnienia przez przewoźników w poszczególnych miastach, natomiast w drugiej części artykułu zaprezentowano sposoby kontroli realizacji usług przewozowych pod kątem tych kryteriów. Najczęściej stosowane kryteria jakościowe pogrupowane zostały w cztery zestawy ocenianych cech jakości: punktualności kursowania pojazdów, niezawodności kursowania pojazdów, jakości taboru (kompletność oznakowania, stan techniczny, czystość pojazdu) oraz jakości obsługi przez prowadzącego pojazd (technika jazdy, sposób zatrzymywania się na przystankach, kultura i obsługa pasażerów, właściwe pełnienie obowiązków służbowych). Przedstawiono również dodatkowe kryteria jakościowe charakterystyczne dla poszczególnych miast. W sposób syntetyczny przedstawiono sposoby przeprowadzania kontroli jakości świadczonych usług przewozowych w poszczególnych miastach. Najczęściej kontrola jakości usług przewozowych odbywa się poprzez identyfikację pojedynczych nieprawidłowości lub poprzez określenie prostych wskaźników statystycznych na podstawie ciągu obserwacji. Zaprezentowano również powiązania wyników kontroli jakości usług przewozowych z wynagrodzeniem za ich świadczenie.
In Poland rules for contracting transport services in public transport are normalized in The Act of law of December 16, 2010 on collective public transport. According to this regulation all contracts should include – among others – conditions relating to the quality norms and improvement of services quality of collective public transport. Thus, the article is a review of quality criteria applied in the transport contracts in big Polish cities (more than 250 thousand inhabitants). Nine transport contracts currently legally binding in Warsaw, Krakow, Łódź, Wrocław, Poznań, Gdańsk, Gdynia, Katowice and Lublin have been analyzed. In the first part of the article quality criteria expected from the carriers in particular cities have been presented and in the second part of the article methods of controlling of transport services in the light of above criteria have been described. The most frequently applied quality control criteria have been divided in four sets of quality features: punctuality of courses, reliability of courses, quality of rolling stocks (completeness of markings, technical conditions, vehicle cleanness) and service quality of engine driver (motorman) (technique of driving and stop a train at the stations, sophistication – personal attitude of the staff). Also additional quality criteria typical for individual cities have been presented. Synthetically methods of transport service’s quality control in particular cities have been presented. The most often service’s quality control is held through identification of single incorrectness’s or through defining simple statistical indicators based on sequences of observations. Also connections between results of the control of the service quality and payment for those services have been presented.
Źródło:
Transport Miejski i Regionalny; 2013, 4; 31-40
1732-5153
Pojawia się w:
Transport Miejski i Regionalny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality analysis in the supply chain of transported LNG
Autorzy:
Czerwińska, Karolina
Pacana, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/101776.pdf
Data publikacji:
2019
Wydawca:
Instytut Polityki Energetycznej im. Ignacego Łukasiewicza
Tematy:
supply chain
natural gas
liquefied natural gas
LNG
quality control
Opis:
The natural gas market has changed over the last few years. The approach to commercial relations hitherto was conditioned by the method of supply of this raw material, which was mainly carried out using gas pipelines. Taking into account the fact that natural gas has a six hundred times higher energy density in the form of LNG than in uncompressed form, it is economically justified to transport the resource by more than just traditional gas pipelines. Maritime transport of LNG has become an alternative means of delivering volumes to areas with insufficient gas resources. The article presents general methods of settlement and quality control of LNG in marine loading and receiving terminals. The types of measurements used in LNG settlements carried out on ships and on land are analysed. The aim of the paper was to analyse the way of ensuring and supervising the quality of LNG transported to the ship and to design an assessment form and monitor the stability of the quality level of LNG supplies with the use of a single measurement control card. It is proposed to use a two-track numerical stabilisation control card for single measurements and a mobile range IX-MR (Xi-MR).
Źródło:
Energy Policy Studies; 2019, 2 (4); 3-18
2545-0859
Pojawia się w:
Energy Policy Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative application of quality methods in the homogeneity assessment of the F-16 aircraft group in terms of generated noise
Autorzy:
Misztal, Agnieszka
Szymanski, Grzegorz M.
Misztal, Wojciech
Komorski, Pawel
Powiązania:
https://bibliotekanauki.pl/articles/2087027.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
noise measurements
F-16 aircraft
homogeneity assessment
quality control methods
Opis:
Given the high-power concentration of combustion engines used in military aviation, it is reasonable to measure the instantaneous surges in the sound pressure level. Therefore, a research question was raised regarding the differences in this level for various aircraft engines of the same type (F100-PW-229) to assess their size and statistical significance. The aim of the paper is to discuss the attempt to check the significant difference between the parameters of the acoustic level generated by the aircraft engines. The measurements were carried out for 32 engines of the F-16 Block 52+ multirole aircraft during takeoff process. The parameters of noise in the point system and in the octave distribution were subject to analysis. Statistical methods dedicated to assessing production stability, i.e. the Shewhart chart, were applied. The results of the analysis showed that the discrepancies generally do not exceed a value of +/− 3σ . Therefore, it can be concluded that the analogous results for F-16 noise are homogeneous. Thus, the Shewhart chart method proved useful for assessing the homogeneity of these measurements.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 2; 187--199
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ wybranych czynników ergonomicznych na skuteczność kontroli jakości
Influence of selected ergonomic factors on the effectiveness of quality control
Autorzy:
Wachowiak, F.
Kujawińska, A.
Powiązania:
https://bibliotekanauki.pl/articles/269469.pdf
Data publikacji:
2013
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
ergonomia
środowisko pracy
kontrola jakości
ergonomics
work environment
quality control
Opis:
W artykule przedstawiono wyniki badań wpływu wybranych czynników ergonomicznych na skuteczność kontroli jakości w przedsiębiorstwie produkcyjnym z branży drzewnej. Wykazano, że dostosowanie środowiska pracy do wymagań i zaleceń ergonomii wpływa na skuteczność kontroli jakości, mierzoną frakcją wyrobów niezgodnych w stosunku do wyrobów zgodnych w kontrolowanej partii produkcyjnej.
In this article, authors shown the influence of selected ergonomics factors on the effectiveness of quality control. Demonstrate a significant role of human in quality improvement. In product realization, project findings relate to a specific product, in production processes. The designed quality must be transferred to produced quality. The key of success is to respect the findings of project, to keep on the high level maintained quality of enterprise resources – machinery, equipment, infrastructure, technologies, processes, working conditions, and also prepare a person to work – in the meaning of ergonomics. Full use of technical capabilities of fixed assets, in the meaning of maximal quality level, depends on interaction between man and machine, technical objects. People are a factor, without which production could not be implemented. The human potential, next to substantive and financial potential, is the main part of production potential of the enterprises. From many reasons, also physical, and mental strength, human being is much more defective, than technical elements. “Biological machine” is not the same as technical machine. All the non-conformance, that are the result of the human factor, are coming from bad projected system, not adapted to human. It is not a bad will of employee (of course without all extreme situations). Ergonomics, as a science, is responsible for adaptation of technical conditions to human. The humanization of processes has got an important influence on quality in production processes. Ishikawa says “People are the creators of quality”. Authors says: Ergonomics is the creator of quality.
Źródło:
Inżynieria Maszyn; 2013, R. 18, z. 1; 51-59
1426-708X
Pojawia się w:
Inżynieria Maszyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved calibration uncertainty assessment technique in coordinate metrology considering thermal influences
Autorzy:
Mussatayev, Meirbek
Huang, Meifa
Nurtas, Marat
Arynov, Azamat
Powiązania:
https://bibliotekanauki.pl/articles/2052177.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
coordinate measuring machine
coordinate metrology
uncertainty
quality control
thermal influence
Opis:
Reliable measurement uncertainty is a crucial part of the conformance/nonconformance decision-making process in the field of Quality Control in Manufacturing. The conventional GUM-method cannot be applied to CMM measurements primarily because of lack of an analytical relationship between the input quantities and the measurement. This paper presents calibration uncertainty analysis in commercial CMM-based Coordinate Metrology. For the case study, the hole-plate calibrated by the PTB is used as a workpiece. The paper focuses on thermo-mechanical errors which immediately affect the dimensional accuracy of manufactured parts of high-precision manufacturers. Our findings have highlighted some practical issues related to the importance of maintaining thermal equilibrium before the measurement. The authors have concluded that the thermal influence as an uncertainty contributor of CMM measurement result dominates the overall budgets for this example. The improved calibration uncertainty assessment technique considering thermal influence is described in detail for the use of a wide range of CMM users.
Źródło:
Metrology and Measurement Systems; 2021, 28, 4; 609--626
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Endoscopic Ultrasonography (EUS) in Preoperative Staging of Gastric Cancer - Demand and Reality
Autorzy:
Meyer, Lutz
Meyer, Frank
Schmidt, Uwe
Gastinger, Ingo
Lippert, Hans
Powiązania:
https://bibliotekanauki.pl/articles/1396626.pdf
Data publikacji:
2012-02-01
Wydawca:
Index Copernicus International
Tematy:
endoscopic ultrasonography (EUS)
gastric cancer
quality control
multicenter observational study
Opis:
Exact pretherapeutic staging is considered to be essential for decision-making in the therapeutic algorithm of gastric cancer.The aim of the study was to characterize the role and value of EUS in the diagnostic and therapeutic management of gastric cancer in daily surgical practice.Material and methods. Thousand one hundred thirty nine patients with primary gastric cancer from 80 hospitals of each profile of care were enrolled in this systematic clinical prospective multicenter observational study over a time period of 12 months. The characteristics of the diagnostic management, in particular, of EUS were documented. The preoperative EUS findings were compared with the T stage (T1 to T4) and the N category (N+ or N-) revealed by the histopathologic investigation of the surgical specimen. By the mean of X2 test, the impact of EUS on the therapeutic decision-making was determined.Results. Pretherapeutic EUS was only performed in 27.4% (n=312) of all patients. Overall, the diagnostic accuracy for the T stage was 42.6% in average. The subgroup analysis showed the following results: T1, 31.5%; T2, 42.6%; T3, 65.2%; T4, 17.6%. The correct predictive value of the N category was 71.3% reaching a sensitivity of 69.7% and a specificity of 73.3%. Overstaging was observed in 45.8%, understaging in only 10.8%. Additional diagnostic information by EUS was only provided in 4.7% of subjects.Conclusions. The present study indicates the variability, limited reliability and only moderate acceptance of EUS in diagnosing gastric cancer in daily practice. In particular, the prediction of the T stage does not reach the data reported in the literature, which were mostly achieved in specific EUS studies.
Źródło:
Polish Journal of Surgery; 2012, 84, 3; 152-157
0032-373X
2299-2847
Pojawia się w:
Polish Journal of Surgery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Audit narzędziem doskonalenia
Audit as an improvement process
Autorzy:
Wawrzyniak, J.
Małolepszy, H.
Powiązania:
https://bibliotekanauki.pl/articles/238112.pdf
Data publikacji:
2010
Wydawca:
Instytut Technologii Bezpieczeństwa Moratex
Tematy:
audyt
doskonalenie systemu jakości
kontrola jakości
audit
quality management system improvement
quality control
Opis:
W referacie zostaną omówione zagadnienia dotyczące procesu doskonalenia systemu jakości organizacji oraz rola i wpływ auditu na doskonalenie. Przybliżone zostaną definicje związane z auditem, jego etapami i rodzajami. Zostaną omówione zasady przeprowadzenia auditu, gromadzenia dowodów auditowych oraz rola auditora w systemie jakości organizacji.
The paper shall discuss the matters regarding the process of improving the quality system of an organisation, as well as the role and impact od the audit o the improvement. Some definitions related to the audit, its stages and kinds are made familiar. The rules of audit execution, gathering the audit evidences and the role of auditor in the organisational quality system shall be discussed.
Źródło:
Techniczne Wyroby Włókiennicze; 2010, R. 18, nr 1/2, 1/2; 29-33
1230-7491
Pojawia się w:
Techniczne Wyroby Włókiennicze
Dostawca treści:
Biblioteka Nauki
Artykuł
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