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  1. 3 Archives of Foundry Engineering
  2. 2 Journal of Ecological Engineering
  3. 2 Scientific Letters of Rzeszow University of Technology. Mechanics
  4. 2 Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
  5. 1 Archives of Foundry
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  1. 2 Czekaj E.
  2. 2 Garbacz-Klempka A.
  3. 2 Kwak Z.
  4. 1 Akhtaruzzaman Md
  5. 1 Al Mousawi Eman
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1
Content available Implementation of the Quality and Creating GIS Maps for Groundwater in Babylon, Iraq
Al Mousawi Eman, Jahad Udai A., Mahmoud Ammar Shaker, Chabuk Ali, Naje Ahmed Samir, Al-Ansari Nadhir, Laue Jan
Journal of Ecological Engineering
|
2023
|
Vol. 24, nr 8
310--321
EN
In times of water scarcity, groundwater is a vital resource that provides an alternate source of water for human consumption. In Iraq, the quality of rivers has been greatly affected by climate change and the dwindling availability of surface water. Examining and classifying the groundwater in this region is now vital. The present study sought to incorporate the groundwater property data (drinking purpose) with a geographic information system (GIS). Eleven variables were measured in 25 wells to investigate the physio-chemical properties around the Babylon province of Iraq. On the basis of the acceptability of groundwater for drinking, GWQI was categorized into four primary groups in the results. Approximately 28% of the twenty-five wells (1811.04 km2) are of excellent quality, 24% are of good quality (1552.3 km2), 44% are of low quality (2845.9 km2), and 4% are extremely contaminated (2587.2 km2). The average GWQI for the entire study region was 110.7, making it inappropriate for human consumption. It has been determined that approximately 52% of the groundwater from the examined wells can be deemed safe for consumption, although certain measurements surpass the permissible limits. To guarantee that the residents in these areas are supplied with water of superior quality and safety, treatment of the tested groundwater is recommended before use.
2
Content available Method of Calculating a Salary Bonus Based on Performance, Quality of Labour, Difficulty of Work, Discipline and Attendance in a Clothing Company
Amira Lakhal, Nejib Sejri, Fadhel Jaafar
Fibres & Textiles in Eastern Europe
|
2022
|
Vol. 30, no. 1 (151)
3--7
EN
Globally, textile and clothing companies are seeking to increase the export rate by minimising the cost of production. The same goal still applies for Tunisian companies. Nonetheless, production cost is the most but not the only significant factor that increases the competitiveness of a product. Others are important in beating the challenge of global competition. Among these factors are deadlines, economic and social stability, proximity, competence of the workforce and quality. In this study, the SAW method was used to develop a method for the calculation of a salary bonus according to the following criteria: the quality index, performance, difficulty of work, discipline, and attendance. This method improved the skills and wages of the workforce, decreased the absenteeism rate and increased the productivity of the company. The results showed in dependence on the case studied that the quality index varied between-0.053 and 1, performance between 40.5 and 81, the ranking vector between 0.545 and 0.911, and the bonus rate between 0% and 15%. The study reduced the absenteeism rate from 13.25% to 8.3% for direct labour. The quality of production was improved by reducing the defect rate by 8.54% to 4.6%. The efficiency of the chain was also improved by 51% to 67.3%.
3
Ocena konsumencka serów dojrzewających produkowanych z mleka krowiego
Krzysztofik Barbara, Krochmal-Marczak Barbara
Przemysł Spożywczy
|
2021
|
T. 75, nr 10
60--65
PL
Celem pracy była konsumencka ocena serów dojrzewających produkowanych z mleka krowiego. Ocenie poddano sery dojrzewające z Chronioną Nazwą Pochodzenia oraz Chronionym Oznaczeniem Geograficznym. Materiał badawczy stanowiły 4 europejskie, regionalne sery dojrzewające włoski (Parmigiano Reggiano DOP), angielski (Cheddar DOP), szwajcarski (Emmentaler AOP), polski (Ser Koryciński Swojski - CHOG). Z uzyskanych profili jakościowych poszczególnych serów wynika, że najistotniejszym walorem oceny organoleptycznej był miąższ (oczkowanie lub jego brak w strukturze serów), co zostało bardzo wysoko ocenione (4,90 – 3,30 pkt.), a następnie walory smakowo-zapachowe. Jak wynika z badań w serach długo dojrzewających wartość wskaźnika jakości całkowitej (WJC) oscylowała w granicach 4,69 – 4,57 pkt, co świadczy o ich wysokich walorach organoleptycznych, natomiast wartość WJC sera świeżego, leżakującego 4 dni wyniosła 2,82 pkt.
EN
The aim of the study was the consumer evaluation of ripening cheeses made of cow’s milk. The ripened cheeses with Protected Designation of Origin and Protected Geographical Indication were assessed. The research material consisted of 4 European, regional ripening cheeses: Italian (Parmigiano Reggiano DOP), English (Cheddar DOP), Swiss (Emmentaler AOP), and Polish (Ser Koryciński Swojski - PGI). According to the evaluators, the obtained quality profiles of individual cheeses showed that the most important organoleptic value turned out to be the evaluation of the flesh, i.e. no eyeleting or its lack in the structure of the discussed cheeses, this fact was very highly rated (4.90 - 3.30 points), and then flavored. As it results from the research in long-ripening cheeses, the value of the total quality index (WJC) oscillated between 4.69 - 4.57 points, which proves their high organoleptic value, while the WJC value of fresh cheese, aged 4 days was 2.82 points.
4
Content available Comparison Study of Water Quality Produced from a Conventional Water Treatment Plant and a Number of Compact Units
Al Saleh Hadeel Ali
Journal of Ecological Engineering
|
2021
|
Vol. 22, nr 5
258--262
EN
Water is very plentiful through the planet in general. Nevertheless, clean drinking water is not always accessible in the proper time or place for sufficient public or ecological use. The water significance is emphasized by the fact that in the past, great cultures have arisen near and along water bodies. Water quality of some purification complexes (compact units) in the Babylon Province (13 compact unit) as compared with Al-Hillah Al Mouahad Project (water treatment plant) was assessed by the Water Quality Index (WQI) methodology. WQI offers a particular number that states the overall water quality at a definite place and period based on many parameters concerning the quality of water. The water produced from the compact units was classified as "good water" according to the WQI classification with the values ranging from 85.4 in Bermana unit to 99.17 in Al-Muamera compact unit. Moreover, the research results showed that the water purification complexes work with efficiency, very close to the performance of large water purification projects and stations, and this means that it is possible to rely on them to obtain good drinking water quality, especially in small or remote areas.
5
Content available remote The dependence of inhomogeneity correction factors on photon beam quality index performed with the Anisotropic Analytical Algorithm
Akhtaruzzaman Md, Kukołowicz Paweł
Polish Journal of Medical Physics and Engineering
|
2020
|
Vol. 26, Iss. 3
127--134
EN
The purpose of the study was to investigate the dependence of tissue inhomogeneity correction factors (ICFs) on the photon beam quality index (QI). Materials and Methods: Heterogeneous phantoms, comprising semi-infinite slabs of the lung (0.10, 0.20, 0.26 and 0.30 g/cm3), adipose tissue (0.92 g/cm3) and bone (1.85 g/cm3) in water, were constructed in the Eclipse treatment planning system. Several calculation models of 6 MV and 15 MV photon beams for quality index (TPR20,10) = 0.670±k*0.01 and TPR20,10 = 0.760±k*0.01, k = -3, -2, -1, 0, 1, 2, 3 respectively were built in the Eclipse. The ICFs were calculated with the anisotropic analytical algorithm (AAA) for several beam sizes and points lying at several depths inside of and below inhomogeneities of different thicknesses. Results: The ICFs increased for lung and adipose tissues with increasing beam quality (TPR20,10), while decreased for bone. Calculations with AAA predict that the maximum difference in ICFs of 1.0% and 2.5% for adipose and bone tissues, respectively. For lung tissue, changes of ICFs of a maximum of 9.2% (6 MV) and 13.8% (15 MV). For points where charged particle equilibrium exists, a linear dependence of ICFs on TPR20,10 was observed. If CPE doesn’t exist, the dependence became more complex. For points inside of the low-density inhomogeneity, the dependence of the ICFs on energy was not linear but the changes of ICFs were smaller than 3.0%. Measurements results carried out with the CIRS phantom were consistent with the calculation results. Conclusions: A negligible dependence of the ICFs on energy was found for adipose and bone tissue. For lung tissue, in the CPE region, the dependence of ICFs on different beam quality indexes with the same nominal energy may not be neglected, however, this dependence was linear. Where there is no CPE, the dependence of the ICFs on energy was more complicated.
6
Content available Groundwater quality composition and its suitability for drinking in long-term irrigated area
Dinka Megersa O.
Journal of Water and Land Development
|
2020
|
no. 44
43--54
EN
This study presents the hydrochemical composition of groundwater under long-term irrigation of Wonji plain (Ethiopia) and its quality status for drinking purpose. Groundwater samples were collected from 30 groundwater monitoring tube wells installed at different parts of the sugarcane plantation and then analysed for the major physico-chemical quality parameters (pH, EC, major cations and anions) following standard test procedures. The status of groundwater for drinking was compared with WHO and other quality standards. Analytical analysis results indicated that majority of the considered quality parameters are rated above the prescribed tolerable limits for drinking set by WHO. About 97% of the water samples has water quality index in the range of very poor to unfit for drinking. The contamination index is in the ranges of low (–1.0) to high (3.6). In general, the groundwater of the area is unsuitable for human consumption without proper treatment such as boiling, chlorination, filtering, distillation, desalinaization, defluoridation, deionization, demineralization (ionexchange) and membrane processes. Since the TDS concentration is relatively small (<2000 ppm), demineralization process alone can be sufficient to bring the water to an acceptable level.
7
Content available Quality index of multi-disc grinding process of grainy biomass
Kruszelnicka Weronika, Idzikowski Adam, Markowska Katarzyna, Kasner Robert
Quality Production Improvement - QPI
|
2019
|
Vol. 1, Iss. 1
503--511
EN
The main aim of the grinding process is size reduction. For such formulated purpose of grinding, the particles dimensions after grinding process are the major quality determinant indicated in many works concerning size reduction. In this paper original quality index integrating size reduction and energy consumption in the grinding process was proposed. The aim of the study is to create method for grinding process quality assessment. The problem was formulated as a question: (1) is it possible to create mathematical description of grinding process quality? (2) what grinding parameters influence on the grinding quality index? To resolve the problem, original quality index was developed and experiment on a multi-disc mill was conducted. On the basis of obtained results it was found that discs angular speed affects the grinding process quality.
8
Content available Propozycja definicji indeksu jakości klimatu akustycznego do oceny stopnia oddziaływania ruchu drogowego w obszarze skrzyżowania
Sordyl J., Brzozowski K.
Autobusy : technika, eksploatacja, systemy transportowe
|
2018
|
R. 19, nr 6
244--248, CD
PL
W artykule przedstawiono propozycję definicji indeksu jakości klimatu akustycznego. Indeks stanowi miarę umożliwiającą ocenę negatywnego oddziaływania ruchu drogowego na klimat akustyczny w najbliższym otoczeniu infrastruktury drogowej. Miara ta będzie przydatna w systemach, których zadaniem jest ocena stopnia oddziaływania transportu drogowego w krótkich okresach czasu. Zaproponowany indeks zastosowano do oceny klimatu akustycznego w obszarze skrzyżowania monitorowanego ze względu na hałas komunikacyjny w czasie bliskim rzeczywistemu.
EN
The article presents a proposal for the definition of the acoustic climate quality index. The index is a measure to assess the negative impact of road traffic on the acoustic climate in the immediate vicinity of the road infrastructure. This measure will be useful in systems whose task is to assess the impact of road transport in short periods of time. The index was used to assess the acoustic climate in the cross-road area monitored due to traffic noise in near real time.
9
Content available The Influence of Selected Refining Methods of AlSi7Mg0.3 Silumin on its Quality Index
Czekaj E., Nykiel J., Kwak Z., Garbacz-Klempka A., Nykiel M.
Archives of Foundry Engineering
|
2018
|
Vol. 18, iss. 2
72--78
EN
The publication presents the comparison of selected refining methods (gaseous and/or flux) based on mechanical properties of the obtained secondary silumin EN AC-AlSi7Mg0.3 (in accordance to the European Standard PN-EN 1706:2011). The point of reference was a similar primary alloy produced using pure batch materials. The mechanical properties measured in room temperature were used to calculate the materials quality index. The research showed, that properly carried out refinement process of secondary (recycled) alloys can bring their quality indexes close to those of their primary materials. The goal was to assess the efficiency of selected refining methods when applied to the examined group of casting silumins, by measuring the basic mechanical properties (in room temperature) before and after refining. The practical aspect was to choose an effective (ecologically, technologically and economically) method of refining of secondary EN AC-AlSi7Mg0.3 alloy used to cast car rims for JN METAL company in Ostowiec Świętokrzyski (Poland).
10
Content available Effect of Alloy Additions on the Structure and Mechanical Properties of the AlSi7Mg0.3 Alloy
Pisarek B. P., Rapiejko C., Szymczak T., Pacyniak T.
Archives of Foundry Engineering
|
2017
|
Vol. 17, iss. 1
137--142
EN
The study presents the results of the investigations of the effect of Cu, Ni, Cr, V, Mo and W alloy additions on the microstructure and mechanical properties of the AlSi7Mg0.3 alloy. The examinations were performed within a project the aim of which is to elaborate an experimental and industrial technology of producing elements of machines and devices complex in their construction, made of aluminium alloys by the method of precision investment casting. It was demonstrated that a proper combination of alloy additions causes the crystallization of complex intermetallic phases in the silumin, shortens the SDAS and improves the strength properties: Rm, Rp0.2,HB hardness. Elevating these properties reduces At, which, in consequence, lowers the quality index Q of the alloy of the obtained casts. Experimental casts were made in ceramic moulds preliminarily heated to 160 °C, into which the AlSi7Mg0.3 alloy with the additions was cast, followed by its cooling at ambient temperature. With the purpose of increasing the value of the quality index Q, it is recommended that the process of alloy cooling in the ceramic mould be intensified and/or a thermal treatment of the casts be performed (ageing) (T6).
11
Content available Quality Index of the AlSi7Mg0.3 Aluminium Casting Alloy Depending on the Heat Treatment Parameters
Czekaj E., Zych J., Kwak Z., Garbacz-Klempka A.
Archives of Foundry Engineering
|
2016
|
Vol. 16, iss. 3
25--28
EN
Issues connected with high quality casting alloys are important for responsible construction elements working in hard conditions. Traditionally, the quality of aluminium casting alloy refers to such microstructure properties as the presence of inclusions and intermetallic phases or porosity. At present, in most cases, Quality index refers to the level of mechanical properties – especially strength parameters, e.g.: UTS, YS, HB, E (Young’s Modulus), K1c (stress intensity factor). Quality indexes are often presented as a function of density. However, generally it is known, that operating durability of construction elements depends both on the strength and plastic of the material. Therefore, for several years now, in specialist literature, the concept of quality index (QI) was present, combines these two important qualities of construction material. The work presents the results of QI research for casting hypoeutectic silumin type EN AC-42100 (EN AC-AlSi7Mg0.3), depending on different variants of heat treatment, including jet cooling during solution treatment.
12
Komputerowe metody oceny systemu dystrybucji paliw przy zastosowaniu wektorowego wskaźnika jakości
Montusiewicz J.
Logistyka
|
2014
|
nr 3
4497--4506
PL
W pracy zaprezentowano wybrane metody wspomagania wyboru przy wykorzystaniu wektorowego wskaźnika jakości, które można zastosować przy wielokryterialnej ocenie systemu dystrybucji paliw. Przedstawiono metody już znane: Metodę leksykograficzną, ELECTRE III, MAPPAC i ORESTE oraz metody autorskie: Zmodyfikowaną metodę leksykograficzną oraz Metodę wyznaczania rozwiązań kompromisowych. Pierwsza z nich umożliwia uporządkowanie ocenianych wariantów w ranking, zaś druga pozwala na wygenerowanie podzbioru rozwiązań kompromisowych przy zachowaniu preferencji określających ważność rozważanych wskaźników jakości. Wykorzystując dane z artykułu wykonano oceny systemu dystrybucji paliw przy zastosowaniu metod autorskich, a uzyskane wyniki zestawiono z wynikami zamieszczonymi w literaturze. Przeprowadzona analiza porównawcza pokazała, że zaproponowane metody charakteryzują się bardziej zrozumiałym mechanizmem działania, są prostsze w użyciu, a uzyskane wyniki niosą w sobie więcej praktycznych informacji.
EN
The study presents selected methods of assisting choice while using the vector quality index, which can be applied to the multicriteria evaluation of the fuel distribution system. It discusses the already familiar procedures, such as the Lexicographical Method, ELECTRE III, MAPPAC and ORESTE, as well as such authoring approaches as the Modified Lexicographical Method and the Compromise Solutions Method. The first of them makes it possible to arrange the evaluated variants into a ranking order, and the second allows to generate a subset of compromise solutions while keeping the preferences determining the validity of the quality indices considered. Using the data from the article, evaluations of the fuel distribution system were made by means of the authoring methods, and the results obtained were compared with those available in the literature. The comparative analysis carried out has shown that the proposed methods are characterised by a more comprehensible working mechanism and are simpler in application, while the achieved results carry more practical information.
13
Content available Wskaźnik jakości produkowanego betonu a niezawodność w odniesieniu do próby o małej liczebności
Skrzypczak I., Buda-Ożóg L.
Budownictwo i Architektura
|
2014
|
Vol. 13, nr 2
135--141
PL
Kryteria zgodności dla próby o liczebności n=3 wykazują liczne wady [5,6,7] i mogą wpływać na obniżenie poziomu jakości produkowanego betonu, a w konsekwencji do zbyt dużego ryzyka odbiorcy (inwestora, użytkownika). Dlatego oceniono wpływ liczebności próby na zdefiniowany wskaźnik jakości produkowanego betonu oraz określono wpływ liczebności próby i odchylenia standardowego na wskaźnik niezawodności konstrukcji żelbetowych. Analizę wpływu kontroli zgodności na poziom niezawodności realizowanych konstrukcji żelbetowych przeprowadzono dla słupa ściskanego. Otrzymane w wyniku obliczeń wartości wskaźnika niezawodności potwierdzają poprawność zaproponowanej w artykule metody definiowania jakości produkowanego betonu oraz formuły wskaźnika jakości produkowanego betonu
EN
Compliance criteria for the sample size n = 3 have a lot of disadvantages [5,6,7] and they can affect the reduction of quality of produced concrete and, consequently, they can cause too much risk of the recipient (the investor) side. Therefore, the effect of the sample size on the defined quality index of produced concrete has been evaluated. The effect of the sample size and standard deviation on the reliability index of reinforced concrete structures has also been determined.The impact analysis of compliance criteria on the reliability index of reinforced concrete structures was conducted for a compression column. The obtained values of the reliability index results confirm the correctness of the quality index formula and concrete quality proposed in method of defining.
14
Content available remote Formation of quality indexes of machine details on the basis of technological inheritance
Vasiliev A., Kheifetz M., Koukhta S., Prement G.
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
|
2008
|
z. 73 [253]
291-298
EN
From positions of technological inheritance of operational parameters actions on quality management of products of mechanical engineering are offered. The mathematical model of inheritance of quality indexes in life cycle of the product, describing various modes of behavior is developed by manufacture and application of technical systems. Use of mathematical model at computer designing gives ample opportunities for reduction of expenses at manufacturing and operation of constructive - complex products of mechanical engineering.
15
Content available remote Mechanizm konstytuowania wskaźników jakości wyrobów maszynowych
Szabajkowicz W.
Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika
|
2006
|
z. 67 [230]
29-36
16
Content available remote Wskaźnik jakości odlewów ze stopu Al-Si
Orłowicz A. W., Mróz M.
Archiwum Odlewnictwa
|
2004
|
R. 4, nr 14
363-368
PL
Wskaźnik jakości - Q jest coraz częściej stosowany w praktyce przemysłowej do oceny efektu szybkości krystalizacji, dodatków stopowych i obróbki cieplnej na plastyczność i wytrzymałość na rozciąganie stopu AI-7SiMg [1-3]. W pracy przedstawiono wyniki badań nad poprawą wskaźnika jakości stopu drogą zmiany składu chemicznego i poprzez obróbkę cieplną.
EN
The quality index introduced on empirical grounds is widely used by the casting industry as tool for predicting the effect of solidification rate, chemical additions and heat treatment on the ductility and tensile strength of AI-7Si-Mg casting alloys. The paper presents the results of the effect of the chemical composition and heat treatment on the increase of the quality index Al-Si alloy.
17
Content available The universal quality index for medical images
Lisowska A., Kotarski W.
Journal of Medical Informatics & Technologies
|
2002
|
Vol. 3
MI199--206
EN
The aim of this paper is to propose a new quality index which measures the distance between a reference (source) image and its corrupted copy in the way as Human Visual System (HVS) does. The new quality index called the Mean Weighted Quality Index (MW) is defined with the help of the well known easy calculated indexes. The experiments performed on a number of medical images confirmed usefulness of the new index.
18
Content available remote Analiza wskaźników jakości procesów przeróbczych jako kryteriów sterowania
Trybalski K.
Gospodarka Surowcami Mineralnymi
|
2002
|
T. 18, z. 1
25-39
PL
W pracy przedstawiono analizę wskaźników jakości procesów przeróbczych pod kątem ich użyteczności dla zadań sterowania. Podano opis przeróbczego układu technologicznego. Podano kryteria jakości stosowane w optymalizacji parametrycznej oraz dynamicznej, a także właściwości jakie powinny spełniać. Przedstawiono wymagania stawiane wskaźnikom oceny procesów przeróbczych, podano również wskaźniki oceny i funkcje celu dla wybranych procesów: flotacji i mielenia.
EN
The analysis of quality indexes of mineral processes from the perspective of their utility for controlling tasks has used in the parametrical and dynamical optimization have been given as well as properties which they shall fulfiled. Requirements for appreciation indexes of mineral processes were presented and appreciation indexes and goal functions for selected processes (flotation and milling) were given.
19
Content available remote Próba zastosowania ilościowego kryterium oceny jakości ochrony czasowej maszyn rolniczych
Ambroziak W., Stężała S.
Problemy Inżynierii Rolniczej
|
1999
|
R. 7, nr 4
61-68
PL
Zastosowano metodę oceny jakości ochrony czasowej maszyn rolniczych za pomocą opracowanego przez autorów holenderskich ujednoliconego kryterium, polegającego na określeniu współczynnika jakości ochrony czasowej Woc, wynikającego z częstotliwości stosowania operacji składających się na ochronę czasową tych maszyn. Dokonano takiej oceny w 80 gospodarstwach rolnych. Stwierdzono, że przyjęty jako kryterium jakości ochrony czasowej maszyn rolniczych wskaźnik Woc, umożliwia dokonanie ilościowej oceny w każdym gospodarstwie oraz porównanie jakości ochrony czasowej w różnych gospodarstwach nie tylko krajowych, lecz również zagranicznych, stosujących te same kryteria.
EN
A method, based on a Dutch unified criterion, was proposed to estimate the quality of temporary protection against corrosion in agricultural machines. The method consists in determination of a temporary protection quality index Woc related to the frequency of operations necessary to be performed for effective temporary protection of the machines. The method was applied to survey the agricultural machines on 80 farms. It was stated that the Woc index assumed as a criterion for estimating temporary machine protection enabled to make such quantitative evaluation and comparison of its quality on any farm, either in Poland abroad, with the use of the same method.
20
Content available remote Punktowa ocena jakości bojowej broni strzeleckiej
Kowalczyk A.
Problemy Techniki Uzbrojenia
|
1998
|
R. 27, nr 65
153--163
PL
W komunikacie przedstawiono metodę obliczania wskaźnika jakości bojowej broni strzeleckiej w postaci liczby niemianowanej z przedziału [01]. Jest to wskaźnik uogólniony ujmujący łącznie liczbowe i opisowe cechy bojowe broni oraz współczynniki wagi tych cech obliczone na podstawie ocen wystawionych przez reprezentatywną populację użytkowników broni strzeleckiej. Metoda umożliwia utworzenie list rankingowych broni zgodnych z uśrednioną statystycznie opinią użytkowników.
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