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Dominika Siwiec
Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstancow Warszawy Rzeszow 12, 35-959 Rzeszow, Poland

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Journal article
Published: 13 August 2021 in Sustainability
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Dynamic changes in customers’ expectations and unfavorable climate changes have generated the need to consider such aspects in the process of creating new products and the modernization of existing products. Simultaneously including customers’ expectations and environmental impact is a key element of the sustainable development of products. Enterprises attempt, within their awareness and possibilities, to apply the idea of sustainability; they do this more or less methodically. As such, an instrument to support decision-making in the area of product development is still needed because it would both be desirable for customers and have less of a negative effect on the natural environment. The purpose of this study was to develop a model that supports decision-making in the development of products while considering sustainability. The model determines the key criteria of the product, criteria states (current and future), and their positive correlations (e.g., achieving high levels of product quality and no (or a reduction in) destructive impact on the environment). To reduce the fuzzy decision-making environment, multiplicative decision methods with the fuzzy Saaty scale were implemented. These methods were the fuzzy analytic hierarchy process (FAHP) and the fuzzy technique for order of preference by similarity to ideal solution (FTOPSIS). The model is able to support qualitative–environment decisions in the development of any product.

ACS Style

Dominika Siwiec; Andrzej Pacana. Model Supporting Development Decisions by Considering Qualitative–Environmental Aspects. Sustainability 2021, 13, 9067 .

AMA Style

Dominika Siwiec, Andrzej Pacana. Model Supporting Development Decisions by Considering Qualitative–Environmental Aspects. Sustainability. 2021; 13 (16):9067.

Chicago/Turabian Style

Dominika Siwiec; Andrzej Pacana. 2021. "Model Supporting Development Decisions by Considering Qualitative–Environmental Aspects." Sustainability 13, no. 16: 9067.

Journal article
Published: 27 July 2021 in Sustainability
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Crushing is one of the most energy-consuming technological processes. The purpose of grinding is to achieve the desired grain size of mineral raw materials. The process of grinding consists of many factors, for example, the size and form of crushed grains, as well as their mutual arrangement inside the crushing machine chamber, the technological parameters of the crusher, the material properties, and the speed of the moving grains. One of the key parameters of the aggregate is its resistance to grinding. Resistance to grinding is related to the strength of the products made from aggregates subjected to grinding, which affects the overall quality of these products. Therefore, the aim of this study is to analyze the impact of the crushing of natural aggregate on the LA crumbling strength index. Two types of aggregates were analyzed—natural gravel and natural pebbles crushed in a crusher. Aggregates were acquired from two mines belonging to the plant Kruszgeo S.A. in Rzeszów, i.e., ZEK (Zakład Eksploatacji Kruszywa) Ostrów and ZEK Strzegocice II. The aggregate crushing process was carried out for 4–8 mm and 10–14 mm fractions using cone crushers of the 1044 type. Aggregate crushing was carried out in a Los Angeles drum, in accordance with the requirements of EN 1097-2:2020. The analysis showed that for grits of the 10–14 mm fraction, the lower values of the LA indices were obtained, which allows for obtaining a bigger index of crushing strength than in the case of crushing using the 4–8 mm fraction. This analysis showed how important the process of grinding aggregates is and, thus, the appropriate selection of fractions for the grit crushing process for the aggregate strength on grinding. Subjecting the aggregate to the grinding process results in an improvement in the crushing strength indicator, thus obtaining better strength parameters of the products manufactured from the aggregates subjected to the process of crushing (for example, concrete). The originality of the study is an analysis of key Polish aggregates and the crushing strength index.

ACS Style

Andrzej Pacana; Dominika Siwiec; Lucia Bednarova; Marian Sofranko; Olga Vegsoova; Martin Cvoliga. Influence of Natural Aggregate Crushing Process on Crushing Strength Index. Sustainability 2021, 13, 8353 .

AMA Style

Andrzej Pacana, Dominika Siwiec, Lucia Bednarova, Marian Sofranko, Olga Vegsoova, Martin Cvoliga. Influence of Natural Aggregate Crushing Process on Crushing Strength Index. Sustainability. 2021; 13 (15):8353.

Chicago/Turabian Style

Andrzej Pacana; Dominika Siwiec; Lucia Bednarova; Marian Sofranko; Olga Vegsoova; Martin Cvoliga. 2021. "Influence of Natural Aggregate Crushing Process on Crushing Strength Index." Sustainability 13, no. 15: 8353.

Journal article
Published: 16 May 2021 in Sustainability
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The main factor that conditions the success of organizations is the development of products oriented toward customer satisfaction. An additional attribute of organizations is the use of sustainable development rules. The use of these rules and the simultaneous desire to create high-quality products encourage organizations to apply different methods to, for example, eliminate waste. This study aimed to develop a method to determine the research sample size required to predict a product’s quality level, taking into account current customers’ expectations. This method was developed by modifying a procedure to determine the research sample size as part of the calculated estimator of the mean value in the general population. Based on the concept of product sustainability development, the goal of the developed method was to determine the number of potential customers (respondents) needed to provide product requirements, which were then processed and used to predict the quality level of the product. This method was applied to simultaneously test a number of hypotheses, determine the test power, and detect statistically significant differences for several relationships of the sample sizes and the test power. This was achieved using universal hypotheses and the popular alternative-punctual (MAP) method. Testing of the proposed method showed that it was able to predict the quality level of products based on current expectations of customers.

ACS Style

Dominika Siwiec; Andrzej Pacana. A Pro-Environmental Method of Sample Size Determination to Predict the Quality Level of Products Considering Current Customers’ Expectations. Sustainability 2021, 13, 5542 .

AMA Style

Dominika Siwiec, Andrzej Pacana. A Pro-Environmental Method of Sample Size Determination to Predict the Quality Level of Products Considering Current Customers’ Expectations. Sustainability. 2021; 13 (10):5542.

Chicago/Turabian Style

Dominika Siwiec; Andrzej Pacana. 2021. "A Pro-Environmental Method of Sample Size Determination to Predict the Quality Level of Products Considering Current Customers’ Expectations." Sustainability 13, no. 10: 5542.

Journal article
Published: 01 May 2021 in System Safety: Human - Technical Facility - Environment
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An occupational risk assessment is one of the main processes to assure a safe and healthy workplace. It was shown, that this process is particularly important in the cause of industrial enterprises, in which the number of accidents is the largest. In these enterprises, one of the most often practiced methods is the PN-N-18002 method. However, it was concluded this method has some limitations. They concern the way of assessing the risks in the traditional number scale, which is less precise than the fuzzy triangular number (using in FAHP). Therefore, the aim is to improve the process of assessment in industrial enterprises by integrated the PN-N-18002 method with the FAHP method (Fuzzy Analytic Hierarchy Process). The test of the proposed method was made for three machine operator positions used to aggregate extraction in one of the Podkarpacie enterprises. These positions were: loader operator (Ł-34), digger operator (CAT 323), dredge operator (300/250 KREBS 10/8). The concept of the method was to identify in a precise way what is the greatest extent danger to the operators of these workplaces. It was shown, that it is the work at height. It was concluded, that this method can be practice to risk assessment of other workplaces, among others from industrial enterprises. The originality is the integrated risk assessment method (PN-N-18002) with the fuzzy multicriteria decision method (FAHP) as part of achieving the precise results of risk assessment.

ACS Style

Dominika Siwiec; Artur Woźny; Andrzej Pacana. An Improving the Occupational Risk Assessment in Industrial Enterprises. System Safety: Human - Technical Facility - Environment 2021, 3, 260 -267.

AMA Style

Dominika Siwiec, Artur Woźny, Andrzej Pacana. An Improving the Occupational Risk Assessment in Industrial Enterprises. System Safety: Human - Technical Facility - Environment. 2021; 3 (1):260-267.

Chicago/Turabian Style

Dominika Siwiec; Artur Woźny; Andrzej Pacana. 2021. "An Improving the Occupational Risk Assessment in Industrial Enterprises." System Safety: Human - Technical Facility - Environment 3, no. 1: 260-267.

Journal article
Published: 22 April 2021 in Energies
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Rational decision-making requires assessing the advantages and disadvantages of options, including nonmarket effects (such as environmental effects). This also applies to strategic decision-making in the industrial sector to select alternative renewable energy source (RES). Often, a variety of criteria can be used to select a renewable energy source, whereas no ideal family of criteria for renewable energy selection for industry has been defined in the literature. It was concluded that there is a need to support the actions of industrial development based on RES, which will contribute significantly to overcoming the limitations of the negative effect on the environment in terms of greenhouse gas emissions. There is a clear need for a systematic and polyvalent multicriteria approach to planning in industry. Therefore, a method for choosing the preferred renewable source of electricity for industry has been developed, which considers key criteria of RES choice: Expert opinions, the costs of obtaining the energy and maintaining energy installations, and the volume of electricity from RES. This article offers a modified multicriteria selection method based on a fuzzy analytic hierarchy process (fuzzy AHP) and the technique for preference by similarity to an ideal solution (TOPSIS), integrated with a qualitative price analysis (ACJ). This new method was tested through a case study on selecting a preferred RES in Polish industrial conditions. The research results indicate that the proposed method of choosing the preferred renewable energy source can be used in industrial enterprises that strive to meet their energy needs in accordance with the principles of social responsibility.

ACS Style

Robert Ulewicz; Dominika Siwiec; Andrzej Pacana; Magdalena Tutak; Jarosław Brodny. Multi-Criteria Method for the Selection of Renewable Energy Sources in the Polish Industrial Sector. Energies 2021, 14, 2386 .

AMA Style

Robert Ulewicz, Dominika Siwiec, Andrzej Pacana, Magdalena Tutak, Jarosław Brodny. Multi-Criteria Method for the Selection of Renewable Energy Sources in the Polish Industrial Sector. Energies. 2021; 14 (9):2386.

Chicago/Turabian Style

Robert Ulewicz; Dominika Siwiec; Andrzej Pacana; Magdalena Tutak; Jarosław Brodny. 2021. "Multi-Criteria Method for the Selection of Renewable Energy Sources in the Polish Industrial Sector." Energies 14, no. 9: 2386.

Journal article
Published: 16 December 2020 in Energies
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The concept of sustainable economic development takes into account economic, social and environmental aspects and strives to achieve balance between them. One of the basic areas where it is required to revalue the current views on sustainable development is energy. The growing public awareness of environmental protection forces changes in this industry. Despite the global nature of this problem, its solution is perceived differently in various regions of the world. The unquestionable leader in introducing the idea of sustainable development economy is the European Union, where the energy sector is of key importance for the effectiveness of this process. In order to assess the sustainable energy development of the European Union countries, studies were conducted based on 13 selected indicators characterizing this sector in terms of energy, economy and environment. In order to assess the specificity of the European Union countries, these indicators were additionally compared to the gross domestic product value and the number of inhabitants of individual countries. For these cases, multi-criteria analyses were carried out using the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. It allowed the authors to rank the European Union countries in terms of their adaptation to a sustainable energy economy. Based on the determined values of indicators versus the gross domestic product and the number of inhabitants of the countries in question, these countries were also divided into similar groups with the use of the Kohonen artificial neural networks. These groups can pursue a common energy policy in the field of sustainable development. The aim of the research was to present a new approach to the assessment of sustainable energy development of the European Union countries. The extensive ratio analysis (13 indicators of the sustainable energy development), including the economic and demographic potential of individual countries, and the use of modern tools made it possible to acquire new knowledge in the field of sustainable energy development in the European Union countries. The results should be utilized for more effective sustainable energy development of the European Union countries.

ACS Style

Magdalena Tutak; Jarosław Brodny; Dominika Siwiec; Robert Ulewicz; Peter Bindzár. Studying the Level of Sustainable Energy Development of the European Union Countries and Their Similarity Based on the Economic and Demographic Potential. Energies 2020, 13, 6643 .

AMA Style

Magdalena Tutak, Jarosław Brodny, Dominika Siwiec, Robert Ulewicz, Peter Bindzár. Studying the Level of Sustainable Energy Development of the European Union Countries and Their Similarity Based on the Economic and Demographic Potential. Energies. 2020; 13 (24):6643.

Chicago/Turabian Style

Magdalena Tutak; Jarosław Brodny; Dominika Siwiec; Robert Ulewicz; Peter Bindzár. 2020. "Studying the Level of Sustainable Energy Development of the European Union Countries and Their Similarity Based on the Economic and Demographic Potential." Energies 13, no. 24: 6643.

Journal article
Published: 01 September 2020 in Zeszyty Naukowe Politechniki Częstochowskiej Zarządzanie
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ACS Style

Dominika Siwiec; Andrzej Pacana; Politechnika Rzeszowska im. Ignacego Łukasiewicza Wydział Budowy Maszyn i Lotnictwa. WYKORZYSTANIE TECHNIK ZARZĄDZANIA DO IDENTYFIKACJI ŹRÓDŁA NIEZGODNOŚCI USZKODZEŃ MECHANICZNYCH. Zeszyty Naukowe Politechniki Częstochowskiej Zarządzanie 2020, 39, 36 -48.

AMA Style

Dominika Siwiec, Andrzej Pacana, Politechnika Rzeszowska im. Ignacego Łukasiewicza Wydział Budowy Maszyn i Lotnictwa. WYKORZYSTANIE TECHNIK ZARZĄDZANIA DO IDENTYFIKACJI ŹRÓDŁA NIEZGODNOŚCI USZKODZEŃ MECHANICZNYCH. Zeszyty Naukowe Politechniki Częstochowskiej Zarządzanie. 2020; 39 (1):36-48.

Chicago/Turabian Style

Dominika Siwiec; Andrzej Pacana; Politechnika Rzeszowska im. Ignacego Łukasiewicza Wydział Budowy Maszyn i Lotnictwa. 2020. "WYKORZYSTANIE TECHNIK ZARZĄDZANIA DO IDENTYFIKACJI ŹRÓDŁA NIEZGODNOŚCI USZKODZEŃ MECHANICZNYCH." Zeszyty Naukowe Politechniki Częstochowskiej Zarządzanie 39, no. 1: 36-48.

Case report
Published: 21 July 2020 in Sustainability
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To conduct, in an effective way, the non-destructive testing (NDT) of products—in particular, the fluorescent penetrant inspection (FPI)—remains a challenge. Therefore, the aim of this work is to propose the method of support in the choice of a fluorescent penetrant to be used in FPI research. In the results of the usage of the proposed procedure, it is demonstrated that it is possible to reduce the negative impacts on the environment by FPI processes (through sustainability), while including other criteria, i.e., financial, security, productive (Industry 4.0), and societal (Society 5.0) criteria. The essence of the proposed method is to integrate two methods of decision support. These were the analytic hierarchy process (AHP) method and the cost–quality analysis (AKJ). Using the AHP method, the quality level of fluorescent penetrant (to the satisfaction of the customer)—which included the sustainability criteria—are calculated. These criteria include natural environment, reactivity, combustibility, level of sensitivity, and type of washing (emulsification). Then, with the help of the AKJ, the most favorable penetrant—in terms of quality and cost—is calculated and, thus, indicated. This choice must include the concept of sustainable development. Therefore, this method can be used to choose fluorescent penetrants in manufacturing and service enterprises which carry out FPI.

ACS Style

Andrzej Pacana; Dominika Siwiec; Lucia Bednárová. Method of Choice: A Fluorescent Penetrant Taking into Account Sustainability Criteria. Sustainability 2020, 12, 5854 .

AMA Style

Andrzej Pacana, Dominika Siwiec, Lucia Bednárová. Method of Choice: A Fluorescent Penetrant Taking into Account Sustainability Criteria. Sustainability. 2020; 12 (14):5854.

Chicago/Turabian Style

Andrzej Pacana; Dominika Siwiec; Lucia Bednárová. 2020. "Method of Choice: A Fluorescent Penetrant Taking into Account Sustainability Criteria." Sustainability 12, no. 14: 5854.

Journal article
Published: 01 March 2020 in System Safety: Human - Technical Facility - Environment
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The analysis of product quality is an indispensable action in developing enterprises. In case of mechanical products, the non-destructive tests (NDT) are effective way to make control. Non-destructive tests allow making assessing product quality without destroying it. Due to the dynamically growing requirements of customers and necessary, the improvement actions for demanding organizations important is to make a complex analysis of quality products. Such an action was proposed to a production and service company located in Podkarpacie region of Poland. The aim was to analyze the quality of the mechanical lever and improvement the process of non-destructive tests, in order to identify the source of nonconformity with using quality management techniques. These activities were to demonstrate that the sequence (NDT and selected quality management techniques) would allow the detection of unconformities on the product surface and also identify the source of this unconformity. In the enterprise, the quality research of the product using fluorescent and magnetic-powder methods was made. After identified the unconformity on the product the additional actions which could point the source of unconformity were not practicing. The proposition of improvement in the NTD was use appropriately selected quality management techniques (Ishikawa diagram and 5Why method) after identified the unconformity. The mechanical lever was tested, which its surface using the magnetic-powder method was analyzed. After identified unconformity (scratch) using the Ishikawa diagram, the potential causes were identified and four main causes were selected (i.e.: uncleaned pattern, impurities during production, poor molding mass, poorly carried out product production method). It has been shown that sequence of NDT, Ishikawa diagram and 5Why method allows to identify the unconformity on product surface and source its creation. This sequence could be practicing to analyze other product in production and services enterprises.

ACS Style

Dominika Siwiec; Andrzej Pacana; Renata Dwornicka. Quality Analysis of the Mechanical Lever and Improvement of Non-Destructive Testing Process. System Safety: Human - Technical Facility - Environment 2020, 2, 299 -306.

AMA Style

Dominika Siwiec, Andrzej Pacana, Renata Dwornicka. Quality Analysis of the Mechanical Lever and Improvement of Non-Destructive Testing Process. System Safety: Human - Technical Facility - Environment. 2020; 2 (1):299-306.

Chicago/Turabian Style

Dominika Siwiec; Andrzej Pacana; Renata Dwornicka. 2020. "Quality Analysis of the Mechanical Lever and Improvement of Non-Destructive Testing Process." System Safety: Human - Technical Facility - Environment 2, no. 1: 299-306.

Conference paper
Published: 01 January 2020 in METAL 2020 Conference Proeedings
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ACS Style

Dominika Siwiec; Renata Dwornicka; Andrzej Pacana. improving the process of achieving required microstructure and mechanical properties of 38mnvs6 steel. METAL 2020 Conference Proeedings 2020, 1 .

AMA Style

Dominika Siwiec, Renata Dwornicka, Andrzej Pacana. improving the process of achieving required microstructure and mechanical properties of 38mnvs6 steel. METAL 2020 Conference Proeedings. 2020; ():1.

Chicago/Turabian Style

Dominika Siwiec; Renata Dwornicka; Andrzej Pacana. 2020. "improving the process of achieving required microstructure and mechanical properties of 38mnvs6 steel." METAL 2020 Conference Proeedings , no. : 1.