Wyniki wyszukiwania - Biblioteka Nauki

1

O problemach zapewniania jakości opracowań projektowych.

100%

Łunarski J.

Technologia i Automatyzacja Montażu

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2005

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tom nr 2

2-2

2

Manufacturing and quality assurance of lightweight parts in mass production

80%

Kroll L. , Czech A. , Wallasch R.

Journal of Machine Engineering

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2018

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tom Vol. 18, No. 3

42--55

EN

Production-related preliminary damage and residual stresses have significant effects on the functions and the damage development in fiber composite components. For this reason, it is important, especially for the safety-relevant components, to check each item. This task becomes a challenge in the context of serial production, with its growing importance in the field of lightweight components. The demand for continuous-reinforced thermoplastic composites increases in various industrial areas. According to this, an innovative Continuous Orbital Winding (COW) process was carried out within the framework of the Federal Cluster of Excellence EXC 1075 “MERGE Technologies for Multifunctional Lightweight Structures”. COW is aiming for mass-production-suited processing of special semi-finished fiber reinforced thermoplastic materials. This resource-efficient and function-integrated manufacturing process contains a combination of thermoplastic tape-winding with automated thermoplastic tape-laying technology. The process has a modular concept, which allows implementing other special applications and technologies, e.g. integration of different sensor types and high-speed automated quality inspection. The results show how to control quality and improve the stability of the COW process for large-scale production. This was realized by developing concepts of a fully integrated quality-testing unit for automatic damage assessment of composite structures. For this purpose, the components produced in the COW method have been examined for imperfections. This was performed based on obtained results of non-destructive or destructive materials testing.

3

Quality assurance in environmental technology verification (ETV): analysis and impact on the EU ETV pilot programme performance

80%

Molenda M. , Ratman-Kłosińska I.

Management Systems in Production Engineering

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2018

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tom nr 1 (26)

49--54

EN

Many innovative environmental technologies never reach the market because they are new and cannot demonstrate a successful track record of previous applications. This fact is a serious obstacle on their way to the market. Lack of credible data on the performance of a technology causes mistrust of investors in innovations, especially from public sector, who seek effective solutions however without compromising the technical and financial risks associated with their implementation. Environmental technology verification (ETV) offers a credible, robust and transparent process that results in a third party confirmation of the claims made by the providers about the performance of the novel environmental technologies. Verifications of performance are supported by high quality, independent test data. In that way ETV as a tool helps establish vendor credibility and buyer confidence. Several countries across the world have implemented ETV in the form of national or regional programmes. ETV in the European Union was implemented as a voluntary scheme if a form of a pilot programme. The European Commission launched the Environmental Technology Pilot Programme of the European Union (EU ETV) in 2011. The paper describes the European model of ETV set up and put to operation under the Pilot Programme of Environmental Technologies Verification of the European Union. The goal, objectives, technological scope, involved entities are presented. An attempt has been made to summarise the results of the EU ETV scheme performance available for the period of 2012 when the programme has become fully operational until the first half of 2016. The study was aimed at analysing the overall organisation and efficiency of the EU ETV Pilot Programme. The study was based on the analysis of the documents the operation of the EU ETV system. For this purpose, a relevant statistical analysis of the data on the performance of the EU ETV system provided by the European Commission was carried out.

4

Quality assurance in radon SSNTD measurements : PHE experience

80%

Wasikiewicz J. M.

Nukleonika

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2020

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tom Vol. 65, No. 2

105--110

EN

More than 40 years ago, Public Health England (PHE and its predecessor organizations) established a radon laboratory to deliver services for radon measurements in homes and workplaces in the UK [1]. A key factor in developing these services was to set up stringent quality control and assurance protocols to enable the delivery of reliable and accurate results. There are nearly 40 checkpoints in the process, most exceeding 94% pass rate, starting from a quality check of poly-allyl diglycol carbonate (PADC) polymer and ending with a result modified by seasonal and occupancy correction factors. This work aims to show how to obtain the reliable results of radon measurements.

5

Evaluation of SRS MapCHECK with StereoPHAN phantom as a new pre-treatment system verification for SBRT plans

80%

Sadowski B. M. , Fillmann M. , Szałkowski D. , Kukołowicz P.

Polish Journal of Medical Physics and Engineering

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2022

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tom Vol. 28, Iss. 2

84--89

EN

Introduction: The aim of this study was to evaluate the new 2-Dimensional diode array SRS MapCHECK (SunNuclear, Melbourne, USA) with dedicated phantom StereoPHAN (SunNuclear, Melbourne, USA) for the pre-treatment verification of the stereotactic body radiotherapy (SBRT). Material and methods: For the system, the short and mid-long stability, dose linearity with MU, angular dependence, and field size dependence (ratio of relative output factor) were measured. The results of verification for 15 pre-treatment cancer patients (5 brains, 5 lungs, and 5 livers) performed with SRS MapCHECK and EBT3 Gafchromic films were compared. All the SBRT plans were optimized with the Eclipse (v. 15.6, Varian, Palo Alto, USA) treatment planning system (TPS) using the Acuros XB (Varian, Palo Alto, USA) dose calculation algorithm and were delivered to the Varian EDGE® (Varian, Palo Alto, USA) accelerator equipped with a high-definition multileaf collimator. The 6MV flattening-filter-free beam (FFF) was used. Results: Short and mid-long stability of SRS MapCHECK was very good (0.1%-0.2%), dose linearity with MU and dependence of the response of the detector on field size results were also acceptable (for dose linearity R2 = 1 and 6% difference between microDiamond and SRS MapCHECK response for the smallest field of 1 × 1 cm2). The angular dependence was very good except for the angles close to 90° and 270°. For pre-treatment plan verification, the gamma method was used with the criteria of 3% dose difference and 3 mm distance to agreement (3%/3 mm), and 2%/2 mm, 1%/1 mm, 3%/1 mm, and 2%/1 mm. The highest passing rate for all criteria was observed on the SRS MapCHECK system. Conclusions: It is concluded that SRS MapCHECK with StereoPHAN has sufficient potential for pre-treatment verification of the SBRT plans, so that verification of stereotactic plans can be significantly accelerated.

6

Elements of quality assurance system in nutrient and dissolved oxygen analyses

80%

Danowska B. , Drgas N. , Łysiak-Pastuszak E. , Piechowska B.

Oceanological Studies

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2000

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tom Vol. 29, No. 4

15-25

EN

In 1994, the Environmental Committee of the Helsinki Commission recommended that all laboratories providing data within the monitoring programmes of the Baltic Sea (HELCOM BMP) and HELCOM CMP (HELCOM COMBINE since 1996) should implement quality assurance system in monitoring activities. Quality assurance system includes validation of applied analytical methods, that is evaluation of measurement errors (measurement uncertainty) under current laboratory conditions. Some elements of quality assurance system implemented at the Marine Chemistry Laboratory of the Institute of Meteorology and Water Management in Gdynia are presented regarding method validation, i.e. experimental determination of precision, bias and detection limit of analytical methods in use and experimental determination of measurement uncertainty related to sampling for nutrient analyses. Results of internal quality control are also presented as well as results of international analytical proficiency tests in which the laboratory participates as a form of external quality control.

7

Miary jakości wykonania jako parametry rozkładów zmiennych decyzyjnych

80%

Lis A. , Lis M.

Management

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2001

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tom Vol. 5, no 2

127-132

PL

W pracy przedstawiono i omówiono miary jakości wykonania odzwierciedlające parametry rozkładów zmiennych decyzyjnych. Pierwszą miarą, którą zaprezentowano jest wadliwość rozumiana jako parametr rozkładu dwupunktowego i rozkładów pochodnych. Należy zaznaczyć, iż rozkład zmiennej losowej zerojedynkowej ma jeden parametr i jest nim prawdopodobieństwo zajścia jednego z dwóch możliwych zdarzeń. Kolejną, którą zastosowano jest rozkład Poissona, którą to miarę odniesiono do przeciętnej liczby wad w jednostce produktu. Rozkład Poissona ma zastosowanie dla zdarzeń zachodzących niezwykle rzadko, zdarzeń z małym prawdopodobieństwem przy dużej ilości niezależnych prób.

EN

This composition introduce measures of quality realisation reflecting parameters of variable schedule decisions. First presented measure, is defectiveness understood as parameter of two points schedule and of derivative schedule. It should be mark, that fate variable schedule zero-one has only one parameter and it is probability of incident one from two possible events. Following, it is used Poisson's schedule which achieved the average numbers of defects in individual product. Poisson's schedule is useful for events reaching rather unusual with little probability of large quantities independent tests.

8

Interlaboratory analytical performance studies : a way to estimate measurement uncertainty

80%

Łysiak-Pastuszak E.

Oceanologia

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2004

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tom No. 46 (3)

427-438

EN

Comparability of data collected within collaborative programmes became the key challenge of analytical chemistry in the 1990s, including monitoring of the marine environment. To obtain relevant and reliable data, the analytical process has to proceed under a well-established Quality Assurance (QA) system with external analytical proficiency tests as an inherent component. A programme called Quality Assurance in Marine Monitoring in Europe (QUASIMEME) was established in 1993 and evolved over the years as the major provider of QA proficiency tests for nutrients, trace metals and chlorinated organic compounds in marine environment studies. The article presents an evaluation of results obtained in QUASIMEME Laboratory Performance Studies by the monitoring laboratory of the Institute of Meteorology and Water Management (Gdynia, Poland) in exercises on nutrient determination in seawater. The measurement uncertainty estimated from routine internal quality control measurements and from results of analytical performance exercises is also presented in the paper.

9

Droga do certyfikatu jakości ISO 9001

80%

Brenek D. , Trojanowska E.

Management

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1998

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tom nr 4

165-173

PL

W artykule opisano etapy wprowadzania systemu jakości opartego na międzynarodowych normach ISO 9001. Normy te przedstawiono jako jeden z czynników, który decyduje o utrzymaniu się na rynku danego przedsiębiorstwa, podejmującego działania w kierunku certyfikacji swojego systemu jakości. Starano się podkreślić, że nowe podejście do jakości związane jest z przyjęciem istotnych wymagań, dotyczących kierowania ludźmi, zaangażowania całego kierownictwa i personelu, pracy zespołowej w przedsiębiorstwie. Szczególną uwagę zwrócono na rolę kierownictwa a także na potrzebę przeprowadzania wielu szkoleń. Omówiono także znaczenie prowadzenia auditów wewnętrznych i systematycznej, zgodnej z normą dokumentacji systemu. Zwrócono uwagę na korzyści wynikające z wprowadzenia systemu jakości ISO 900 l, nie zapominając o zagrożeniach i trudnościach z utrzymaniem wysokiej jakości.

10

Feasibility of output quality assurance considering gantry angle using “Stealth Chamber”

80%

Miura H. , Takeichi F. , Enosaki T. , Yamada K. , Ozawa S. , Nagata Y.

Polish Journal of Medical Physics and Engineering

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2021

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tom Vol. 27, Iss. 4

299--302

EN

Purpose: This study was conducted to demonstrate the feasibility of X-ray output constancy quality assurance (QA) of a linear accelerator for various gantry angles using the Stealth Chamber. Methods: The X-ray output constancy of a Varian TrueBeam STx was evaluated under various gantry angles and a 10 × 10 cm2 field size using a Stealth Chamber. Specifically, 10X and 10X-flattening-filter-free beams with dose rates of 600 and 2400 monitor units (MU)/min, respectively, were used. The Stealth Chamber was attached to the gantry head, and irradiation was performed every 45° for gantry angles of 0-315°. To evaluate the variations in the output constancy with respect to the gantry angle, the acquired values were normalized to the value corresponding to a 0° gantry angle. The obtained results were utilized to determine the correction factors for all gantry angles. To verify the correction factors, additional measurements were performed for five days. Results: The maximum variation in the output constancy measurement relative to the output constancy at a 0° gantry angle was found to be approximately 4.0% for both energy beams at a gantry angle of 180°. Furthermore, the measured values were dependent on the gantry angle. Upon applying the correction factor, the variation in the output constancy with respect to the gantry angle was less than 0.5%. Conclusions: Output constancy QA using the Stealth Chamber for various gantry angles was found to be feasible with the application of a correction factor.

11

Methodology for determining machine quality points. Case study

80%

Wojciechowski A.

Research in Logistics & Production

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2018

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tom Vol. 8, No. 3

263--274

EN

The article addresses issues related to quality assurance in manufacturing companies based on the guidelines of quality maintenance pillar under the Total Productive Maintenance concept. The first part of the article presents the methodological steps for determining machine quality points. The second part contains a case study on the implementation of methodology in the manufacturing plant in the lighting industry. The article shows a positive influence of the methodology on the reduction of quality defects in the examined plant.

12

QualitySpy: a framework for monitoring software development processes

80%

Jureczko M. , Magott J.

Journal of Theoretical and Applied Computer Science

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2012

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tom Vol. 6, nr 1

35-45

EN

The growing popularity of highly iterative, agile processes creates increasing need for automated monitoring of the quality of software artifacts, which would be focused on short terms (in the case of eXtreme Programming process iteration can be limited to one week). This paper presents a framework that calculates software metrics and cooperates with development tools (e.g. source version control system and issue tracking system) to describe current state of a software project with regard to its quality. The framework is designed to support high level of automation of data collection and to be useful for researchers as well as for industry. The framework is currently being developed hence the paper reports already implemented features as well as future plans. The first release is scheduled for July.

13

Preliminary Results of the First Quality Assurance Project in Rectal Cancer in Poland

80%

Mroczkowski P. , Hać S. , Mik M. , Berut M. , Dziki Ł. , Kube R. , Śledziński Z. , Lippert H. , Dziki A.

Polish Journal of Surgery

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2011

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tom 83

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nr 3

144-149

EN

When compared with other EU countries, Poland is in the last place in terms of efficacy of rectal cancer treatment. In order to remedy this situation, in 2008 Polish centres were given the opportunity to participate in an international programme for evaluating the treatment efficacy.The aim of the study was to present the results obtained during the first two years of research.Material and methods. The study protocol covered 71 questions concerning demographic data, diagnostics, risk factors, peri- and post-operative complications, histopathology, and treatment plan at discharge. The patient and unit data were kept confidential.Results. From 1 January 2008 to 30 December 2009, there were 709 patients recorded, of which 55.9% were males. At least one risk factor was found in approx. 3/4 of patients, while approx. 1/3 of patients were classified to group 3 and 4 according to ASA. The mean distance of the tumour from the anal margin was 8.5 cm; approx. 70% of patients were in the clinical stages cT3 and cT4; metastases were observed in 18.8%. Transrectal endoscopic ultrasonography (TREUS) was performed in 23.7% of patients, magnetic resonance imaging (MRI) in 2.5% and computed tomography (CT) scan - in 48.1%. In close to half of the patients, anterior or low anterior resection of the rectum was performed, and abdominoperineal resection in 1/4 of the patients. Anastomotic leakage was seen in 3.8% of patients, while 1.8% died during hospitalisation.Conclusions. It should be strived after that all the centres undertaking the treatment of rectal cancer should participate in the quality assurance programme. This should enable the achievement of good therapeutic results in patients with rectal cancer treated in Polish centres.

14

Cost Effectiveness of Software Defect Prediction in an Industrial Project

80%

Hryszko J. , Madeyski L.

Foundations of Computing and Decision Sciences

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2018

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tom Vol. 43, No. 1

7--35

EN

Software defect prediction is a promising approach aiming to increase software quality and, as a result, development pace. Unfortunately, the cost effectiveness of software defect prediction in industrial settings is not eagerly shared by the pioneering companies. In particular, this is the first attempt to investigate the cost effectiveness of using the DePress open source software measurement framework (jointly developed by Wroclaw University of Science and Technology, and Capgemini software development company) for defect prediction in commercial software projects. We explore whether defect prediction can positively impact an industrial software development project by generating profits. To meet this goal, we conducted a defect prediction and simulated potential quality assurance costs based on the best possible prediction results when using a default, non-tweaked DePress configuration, as well as the proposed Quality Assurance (QA) strategy. Results of our investigation are optimistic: we estimated that quality assurance costs can be reduced by almost 30% when the proposed approach will be used, while estimated DePress usage Return on Investment (ROI) is fully 73 (7300%), and Benefits Cost Ratio (BCR) is 74. Such promising results, being the outcome of the presented research, have caused the acceptance of continued usage of the DePress-based software defect prediction for actual industrial projects run by Volvo Group.

15

Zapewnienie jakości w Siłach Zbrojnych RP po wstąpieniu Polski do NATO

80%

Berdowski J. B. , Maludy-Stolarz N.

Problemy Jakości

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2002

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tom R. 34, nr 6

22-29

EN

In majority of NATO-countries, the special military products are bought from the suppliers possessing the quality management systems only. The common group of documents, called STANAG 4107, includes GQA principles (Governmental Quality Assurance) and additional standards based on military AQAP regulations, The national Office of Military Standardization Service (BWSN) presented the adaptive, internal methodology for such performance, in consideration of mutual conformity needs applied on that field. In the national defense sector act 12 certification bodies (unities) testing products and 24 accredited research laboratories, which help significantly in achievement of assured goals. The benefits belong to all parts involved, specially to manufacturers, who being certified suppliers for military sector, can use this situation in marketing aims on the "civillian markets" as well. The present situation, with future view on the development of this area, is in article widely presented. The recommendations and conclusions are included.

16

Zapewnianie jakości podczas uruchamiania produkcji nowego wyrobu

80%

Czyżewski B.

Problemy Jakości

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2006

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tom R. 38, nr 7

9-15

EN

The author points out the fact that the launch of a product mass production should be preceded by complete development of product type quality and production quality. He goes on to specify the determiners of the level of standard compliance. Those are presented in the 5M+E layout (Man, Machine, Material, Method, Measurement, Environment).

17

IEC/EN standards relating to diagnostic radiology equipment, and testing according to these standards

70%

Porubszky T. , Barsai J.

Polish Journal of Medical Physics And Engineering

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2008

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tom 14

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nr 2

99-111

EN

The paper gives an outlook of history, present and future of international (IEC) and European (EN) standards relating to diagnostic radiology equipment. These standards may be safety, quality assurance or performance standards; all of them include testing methods. Elaboration and publication of a new series of safety standards is in progress.Acceptance and conformance testing activity of the accredited Radiohygiene Department Laboratory of NRIRR according to these standards is reported.

18

QAM: proposed model for quality assurance in CBSS

70%

Kharb L.

Advances in Science and Technology. Research Journal

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2015

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tom Vol. 9, nr 27

50--57

EN

Component-based software engineering (CBSE) / Component-Based Development (CBD) lays emphasis on decomposition of the engineered systems into functional or logical components with well-defined interfaces used for communication across the components. Component-based software development approach is based on the idea to develop software systems by selecting appropriate off-the-shelf components and then to assemble them with a well-defined software architecture. Because the new software development paradigm is much different from the traditional approach, quality assurance for component-based software development is a new topic in the software engineering research community. Because component-based software systems are developed on an underlying process different from that of the traditional software, their quality assurance model should address both the process of components and the process of the overall system. Quality assurance for component-based software systems during the life cycle is used to analyze the components for achievement of high quality component-based software systems. Although some Quality assurance techniques and component based approach to software engineering have been studied, there is still no clear and well-defined standard or guidelines for component-based software systems. Therefore, identification of the quality assurance characteristics, quality assurance models, quality assurance tools and quality assurance metrics, are under urgent need. As a major contribution in this paper, I have proposed QAM: Quality Assurance Model for component-based software development, which covers component requirement analysis, component development, component certification, component architecture design, integration, testing, and maintenance.

19

Quality Control and Assurance System - INTOSAI Framework of Professional Pronouncements

70%

Serlikowska A.

Kontrola Państwowa

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2022

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tom 67

|

nr 2 (403)

154-163

EN

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.

20

EDUCATIONAL EFFECTIVENESS AND QUALITY ASSURANCE IN ALTERNATIVE EDUCATION

70%

Заболотна О.

Педагогічні науки: теорія, історія, інноваційні технології

|

2014

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nr 9(43)

224-237

EN

The article deals with the issue of quality assurance in alternative schools in EU countries. The goal of the research in general is to compare alternative education systems in traditional EU countries and those joining during two last enlargements in terms of school environment using Early Childhood Environmental Rating Scale (ECERS). The research was carried out at two stages – theoretical and practical. For the years 2008 – 11 the author has studied the theoretical approaches to alternative education and peculiarities of legislation in 4 EU countries and Ukraine. The author visited 34 alternative schools of different kinds in Poland, France, Germany, and Bulgaria and collected data for the comparative analysis. The results were presented at ECER 2011 in Berlin.