Wyniki wyszukiwania - BazTech

1

Properties of Slag-Based Geopolymer-Stabilized Indian Lithomargic Soil Using Sugarcane Bagasse Ash for Sustainable Pavement Design

Marathe Shriram, Nieświec Martyna, Bhat Arun Kumar, Shetty Srinath

Studia Geotechnica et Mechanica

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2025

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Vol. 47, nr 1

48--64

EN

This investigation examines the feasibility of stabilizing lithomargic soil subgrades through the utilization of geopolymerized slag (GGBS) and sugarcane bagasse ash (SCBA). Through a series of compaction experiments, the best dry density was obtained by maintaining a constant slag dosage of 10% by weight of the soil while altering the dosage of SCBA. The geopolymeric aqueous solution is produced by combining water glass (Na2SiO3) and caustic soda (NaOH). The soil mixtures were subjected to both unstabilized and stabilized UCS and CBR experiments. The experiments suggest that the strength of subgrade soil enhances with the inclusion of SCBA up to a specific threshold (i.e., 15%), after which it decreases due to a constant dosing of slag. In order to comprehend the hardening performance subsequent to geopolymer stabilization, the microstructural analysis is implemented. The establishment of co-relationships among the strength parameters (UCS and CBR) facilitated the formulation of a simple linear regression model in order to comprehend the relationship among the strength parameters of geopolymer-stabilized lithomargic soil. The long-term effectiveness of mechanical performance was disclosed by the boost of strength performance, as evidenced by the prolonged CBR and UCS achievement. This study also suggests a pavement design that adheres to the Indian Roads Congress principles for low-volume roadways, which results in a substantial reduction (45%) of entire pavement thickness while maintaining performance. The economic benefits of geopolymer stabilization in rural pavement construction were revealed through a comprehensive cost analysis that compared the conventional and modified pavement designs while also maintaining the sustainability element.

2

Zrównoważony rozwój przemysłu w erze cyfrowej: nowe wyzwania i perspektywy dla inżynierów

Biegasiewicz Piotr

Przegląd Techniczny : Gazeta Inżynierska

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2025

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nr 3

24--27

PL

Zrównoważony rozwój opiera się na trzech filarach: dążeniu do wzrostu gospodarczego, poszanowaniu środowiska naturalnego oraz zapewnieniu dobrostanu społeczeństwa. W sytuacji postępującej cyfryzacji i automatyzacji oraz urbanizacji istnieje konieczność poszukiwania innowacyjnych rozwiązań, które będą jednocześnie opłacalne ekonomicznie i przyjazne dla środowiska. Inżynierowie pełnią w tych poszukiwaniach kluczową rolę.

EN

Sustainable development is based on three pillars: pursuing economic growth, respecting the environment and ensuring the well-being of society. With increasing digitalisation and automation and urbanisation, there is a need to search for innovative solutions that are both economically viable and environmentally friendly. Engineers play a key role in this search.

3

Assessing the equivalent spring modelling method of CFS elements encased in ultra-lightweight concrete

Alabedi Ahmed, Hegyi Péter

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2025

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Vol. 73, nr 1

art. no. e151384

EN

An efficient finite element approach was recently developed to analyze encased cold-formed steel (CFS) structures. This new technique replaced encasing material with unidirectional springs, analogous to the Winkler foundation concept, to shorten the analysis time while ensuring accuracy and reliability in predicting the structural behaviour of encased CFS components. In this paper, the validity, and limitations of the simplified spring model to represent outstanding plates were assessed. The investigation demonstrated that the simplified spring model could effectively predict the ultimate load for a wide range of ultra-lightweight concrete moduli (50–250 MPa) with an acceptable error. The analysis indicated that plate elements initially in cross-section class 4 without encasing material become at least class 3, or better as a consequence of encasing. Previously reported experiments were used to evaluate the performance of the ESM. The analysis demonstrated that the ESM can accurately predict the local failure ultimate load of encased CFS sections with an acceptable error percent and significantly less computational effort than a 3D solid model.

4

A paradigm for building fire safety

Fangrat Jadwiga

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2025

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Vol. 73, nr 2

art. no. e152606

EN

The aim of this study is to describe the fire safety paradigm using the concept of T. Kuhn, its components, and its role and significance for the further development of construction science, particularly the fire safety of buildings. The components of the fire safety paradigm form a complex structure (system) that is presented graphically to illustrate the interconnections and interactions between them. This structure is built by analogy with a three-dimensional coordinate system using linguistic quantities. Currently, it is not yet possible to assign a sequence of numbers representing the coordinates of a point in the space of this system. The three axes of this system determine the major groups of paradigm elements: – fire safety; – components; – activities and inputs. For each group, the components were distinguished and then briefly described and characterized, emphasizing their mutual connections and importance for the fire safety of buildings. Some significant gaps in the systemic approach to fire safety in the EU were discussed and illustrated by the example of the Grenfell Tower fire in London. The paradigm described is universal, and its universality is based on the possession of certain common attributes characteristic of the fire safety environment and their interpretation, as well as on the manner in which fire safety entities implement them. A paradigm shift will result in the introduction of a fire toxicity criterion for the assessment of construction products, which, for unknown reasons, has so far only been implemented in relation to cables. The second necessary amendment is the addition of a requirement for the spread of fires on building facades.

5

Case study: Using lean manufacturing tools to improve the efficiency of the biesse techno line fdt machine

Pawłowska-Nowak Marta, Materna Daniel, Wower Łukasz, Modelski Marek

Zeszyty Naukowe Politechniki Poznańskiej. Organizacja i Zarządzanie

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2024

|

Nr 89

85--114

EN

The article presents a detailed study of the application of lean manufacturing tools at the manufacturing company Alfa to improve the efficiency of the Biesse Techno Line FDT machine. The study focused on using SMED techniques, the 5S methodology, and TPM tools to reduce setup time and increase overall machine performance. The research included process analysis, external and internal setup, transformation, and the implementation of improvements. The operator’'s workstation was also enhanced by applying the 5S methodology to increase efficiency, ergonomics, and safety. The issue of unplanned downtime was resolved through the use of TPM tools and a schedule of activities. The study was designed not only to improve the performance of the Biesse T echno Line FDT machine in wood processing, but also to have a positive impact on aspects of sustainable development. The reduction in setup time contributed to a reduction in energy and material consumption and waste reduction. Additionally, improving the organization of the workstation and eliminating waste contributed to better ergonomics, safety, and employee health. This study aligned with the concept of sustainable development, which aims to achieve economic efficiency, minimize environmental impact, and provide social benefits.

XX

W artykule przedstawiono szczegółowe badanie dotyczące zastosowania narzędzi lean manufacturing w przedsiębiorstwie Alfa w celu poprawy efektywności maszyny Biesse Techno Line FDT. Badanie skupiło się na wykorzystaniu technik SMED, metodyki 5S oraz narzędzia TPM w celu skrócenia czasu przezbrojenia i zwiększenia ogólnej wydajności maszyny. Badanie obejmowało analizę procesu, przezbrojenia zewnętrzne i wewnętrzne, transformację oraz wprowadzenie usprawnień. Poprawiono również stanowisko pracy operatora przez zastosowanie metodyki 5S w celu zwiększenia efektywności, ergonomii i bezpieczeństwa. Problem nieplanowanych przestojów rozwiązano dzięki narzędziu TPM i harmonogramowi czynności. Badanie miało na celu nie tylko poprawę wydajności maszyny Biesse Techno Line FDT w przetwórstwie drzewnym, ale również miało pozytywny wpływ na aspekty zrównoważonego rozwoju. Skrócenie czasu przezbrojenia przyczyniło się do redukcji zużycia energii i materiałów oraz ograniczenia odpadów. Dodatkowo poprawa organizacji stanowiska pracy i eliminacja marnotrawstwa przyczyniły się do polepszenia ergonomii, bezpieczeństwa i zdrowia pracowników. Badanie to miało zgodność z koncepcją zrównoważonego rozwoju, dążąc do osiągnięcia efektywności ekonomicznej, minimalizacji wpływu na środowisko i korzyści społecznych.

6

Sustainability modeling in energy and labor intensity of manufacturing processes

Depczyński Radosław

Zeszyty Naukowe Politechniki Morskiej w Szczecinie

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2024

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nr 80 (152)

32--45

EN

The manufacturing sector plays a pivotal role in global economic growth and improving living standards. However, it faces significant challenges related to environmental degradation and resource depletion due to traditional manufacturing processes. This paper aims to explore the optimization of production processes within the context of sustainable development, focusing on energy intensity, labor intensity, and ergonomics. Through a systematic literature review, the author analyzes various multicriteria decision-making (MCDM) methods applicable to manufacturing, assessing their effectiveness in addressing sustainability challenges. This research reveals that the MCDM approaches can effectively balance the interrelated aspects of energy consumption, labor management, and ergonomic design, leading to enhanced production efficiency and reduced environmental impact. The author hypothesizes that the integration of the MCDM methods will result in improved decision-making processes that foster sustainability in the manufacturing industry. The findings of this study contribute to the ongoing discourse on sustainable manufacturing practices and provide a foundational framework for future research in this area.

7

Understanding the relationship between firms’ level of knowledge on the smart city concept and the size of the firm – an empirical study

Misiak-Kwit Sandra, Wiścicka-Fernando Małgorzata

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 193

157--168

EN

Purpose: On the one hand, companies become consumers of a smart city, but on the other, they are also co-creators and/or initiators of new goals. The implementation of the smart city concept requires specific knowledge, especially from businesses, who are active participants in the process. The aim of the paper is to gain new knowledge about the relationship between firms’ level of knowledge on the smart city concept and the size of the company. Design/methodology/approach: The survey was carried out in 2021 using the CATI, CAWI interview method on a random sample of 217 companies in the West Pomeranian region in the Republic of Poland. The Chi-square test for independence and the Kruskal-Wallis test were conducted. Findings: A Kruskal-Wallis H test revealed no statistically significant difference in the level of smart city knowledge across the five analyzed groups based on company size. The study results indicate no significant association between company size and the four selected statements regarding smart city concept. The presented data could be the basis for the preparation of an appropriate strategy for sustainable operation, taking into account the important factor, which is people, including entrepreneurs. Research limitations/implications: The authors suggest conducting the same analysis with a larger sample size to generalize the phenomena. The authors believe that it is worth examining the level of knowledge not only of companies from the West Pomeranian voivodeship, but also from all over Poland, which may precisely illustrate the level of understanding of the smart city concept. Practical implications: Research results are important not only for regional policymakers but also for researchers interested in the field of strategic smart city development. Due to changes taking place in the perception of the city’s role, the concept of a smart and sustainable city is becoming increasingly important not only for city authorities but also for businesses. Social implications: The implementation of the smart city concept requires conscious and thoughtful steps, but also created in cooperation with all participants, especially residents and businesses, who are active participants in the process. Originality/value: Addressing a research gap in association between company size and the knowledge about the smart city concept, this study sought to provide valuable insights.

8

The concept of green human resource management in a systematic literature review

Grześ-Bukłaho Justyna, Kłoczko Angelika

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 200

97--117

EN

Purpose: The purpose of this article is to classify scientific research on the concept of green HRM and to identify some emerging directions for future research. Design/methodology/approach: A systematic literature review was conducted based on a bibliometric analysis of the Scopus database. The research process was carried out according to a methodology consisting of six stages. The research query included TITLE-ABS-KEY ("green HRM" OR "green HR" OR "green human resource management"). 340 publication records were qualified for the analysis. Findings: Based on the bibliometric analysis, five research areas were identified: Sustainable HR and environmental management; Sustainable HRM practices and green leadership; Environmental values of green practices; Advancing green citizenship and innovation; Integration of environmental concerns in HRM for sustainable performance. New areas of research that appear in the literature concern the issues of green innovation, green economy, environmental values, pro-environmental behavior, business development, sustainable performance and leadership. Research limitations/implications: Although this study contributes to the literature on the development of HRM concepts, it has some weaknesses that should be noted. These may result from the limitation to the Scopus database and the omission of e.g. gray literature. But also the need to limit the publication to a certain number of characters, so the authors gave up some analyzes (keyword maps or the most popular research methods). Originality/value: This study of systematic literature review presents a comprehensive overview and evolution of the concept of green HRM. The dominant countries, influential authors, research units and journals were indicated. Identifying the most frequently cited articles and the thematic clusters can help researchers and practitioners design their future research and implementation plans.

9

Lessons from the Covid-19 pandemic for European integration

Szypulewska-Porczyńska Alina, Zduńska-Leseux Edyta

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 201

331--339

EN

Purpose: This paper examines the impact of the COVID-19 pandemic on the government's role. The study aims to contribute to the discourse on government intervention and the provision of public goods in a supranational context characterised by diverse socio-economic landscapes and shared policy objectives. Design/methodology/approach: It investigates three dimensions: the temporal evolution of government interventions, the spatial dimensions of the pandemic's impact, and the structural implications for public policy and sustainability. This analysis is based on a comprehensive review of literature, policy documents, and case studies from EU member states. Findings: Findings highlight the significance of long-term strategic planning, international cooperation, and equitable economic systems in managing crises and fostering a sustainable environment. Originality/value: It comprehensively analyses how integrated policy frameworks can enhance crisis resilience, offering practical recommendations for policymakers and contributing to the broader discourse on sustainable development and public governance.

10

Increasing the level of municipal waste recycling in Poland, on the example of the Krakow metropolis

Ostrowska Justyna, Szyba Marta

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 198

375--391

EN

Purpose: The aim of the article is to analyze the recycling levels achieved in Krakow and the municipalities of the Krakow Metropolis and to identify the factors that influence these results. In order to increase recycling rates in municipalities, a calculation method has been proposed that can help estimate the amount of biodegradable waste composted in households. Design/methodology/approach: To achieve the goal of analyzing recycling levels in municipalities, data from the Local Data Bank of the Central Statistical Office and the Małopolska Marshal's Office were used. The proposed method for calculating the mass of composted biodegradable waste was based on exemplary declarations on composting of biodegradable waste posted on municipal websites and indicators such as the amount of kitchen waste generated/person/year and the amount of green waste generated in kg/m2 of green areas. Findings: The analysis of recycling levels shows the problems that municipalities may have in achieving the limits set by the European Commission. Actions must be taken to increase recycling rates in municipalities, and one of them may be a proposed method for calculating the amount of composted biodegradable waste in households. Failure to achieve recycling levels will result in administrative penalties imposed by the Provincial Inspectorates of Environmental Protection (WIOŚ) and failure to meet sustainable development goals. Research limitations/implications: Municipalities have household declarations regarding composting of biodegradable waste. The continuation of the research concerned checking the correctness of data in municipalities on the size of plots and the area of green areas using satellite maps, e.g. geoportal.gov.pl Practical implications: The work uses an original calculation method, helpful in estimating the amount of biodegradable waste subjected to composting. Municipalities could use this method, which would help estimate the neglected amounts of this type of waste in households. By using the proposed method, the management of the biodegradable waste fraction would be more transparent and reliable, which would help increase the achieved recycling levels. Social implications: The implementation of the proposed solution could change the approach of waste producers to the segregation of municipal waste and influence greater attention during segregating biodegradable waste. Consequently, this would also improve waste management and improve the results in achieving sustainable development goals in municipalities. Originality/value: The article is an attempt of response to the need to achieve higher and higher levels of recycling. The proposed solution has implementation value and is addressed to organizations managing waste management in local government units.

11

Good CSR practices aimed at employees as assessed by Generation Z

Kwarcińska Agnieszka

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 201

195--206

EN

Purpose: The objective of this article is to evaluate selected CSR activities of companies aimed at their employees by potential Generation Z employees. Design/methodology/approach: This article is of theoretical and empirical nature. The implementation of the presented assumption was possible through a critical analysis of the source literature and the performance of primary research of an exploratory nature. The research methodology was based on a two-stage action. Findings: The presented results allowed first of all to notice that in the evaluations of CSR activities of potential employees from Generation Z, the features attributed to people from this generation are often visible. At the same time, it can be seen that their main needs speak through their preferences: to be well prepared for their work, to receive support from experienced employees, to be able to maintain a balance between work and private life and to be able to develop individually. Research limitations/implications: The study has limitations, such as a small, unrepresentative sample and a limited set of practices assessed. A continuation of this type of exploration should also include analyses of intergenerational differences in preferences or compositions of new initiatives currently expected by potential employees. Practical implications: The article highlights the importance of carrying out this type of studies. A set of basic conclusions may serve as a prelude to the preparation of recommendations for employers who plan to work with a group of young people. The choice of specific internships probably depends on the age of the employees, but other determinants should not be overlooked either. It also often makes sense to personalise offers. Social implications: This article addresses the broad issue of CSR. Its intention was primarily to draw attention to the legitimacy of modifying, adjusting, the relevance of CSR activities of enterprises for a group of potential employees from Generation Z. Originality/value: The article presents the current results of the primary research conducted in 2023.

12

Environmental and social aspects of sustainable development – a case study of food companies including consumer attitudes and behavior

Garbowska Bożena, Radzymińska Monika

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

|

z. 192

255--273

EN

Purpose: Competing for increasing numbers and more conscious consumers, as well as the emergence of new generations on the market, necessitates the continuous improvement of knowledge about pro-environmental and pro-social consumer attitudes and behavior. Therefore, this study attempts to: - identify the type of actions taken within the framework of sustainable development by selected food brands, - assess the pro-environmental and pro-social attitudes of young consumers purchasing food products, - determine whether environmental and social aspects are a criterion for food choice among young consumers. Design/methodology/approach: The research was conducted in two stages. In the first, an analysis was made of messages posted on the websites of selected food brands. In the second, a quantitative survey was conducted among young consumers (n = 420) by indirect online survey measurement, using a survey questionnaire posted on Google form. Findings: Young consumers have positive pro-environmental and pro-social attitudes. According to the respondents, the social involvement of companies influences the positive image and popularity of the products offered. Nevertheless, almost half of all consumers declared reluctance to pay more for the purchase of goods whose producers are involved in philanthropic and pro-environmental activities. This suggests that, in the opinion of this segment of respondents, it is entrepreneurs who should take financial responsibility for their actions by not raising the prices of the products they sell. It has been shown that concern for others by purchasing socially committed brands and the environmental friendliness of the product have lower rankings in the hierarchy of food product selection factors. Research limitations/implications: The research was conducted on a narrow subject basis, so the results obtained cannot be generalized to the entire segment of young consumers. The scope of the presented research is also limited. The results of the research should be considered as a pilot. Practical implications: The findings are relevant to managers implementing brand sustainability campaigns in the food production sector. They point to the need to continue such activities aimed at fostering altruistic and pro-environmental attitudes among the society. Originality/value: This study highlights that sustainability encompasses a wide range of activities with diverse ways of communicating value to consumers.

13

Data-driven approach in sustainable city management

Radziszewska Aleksandra

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 193

405--419

EN

Purpose: This study aims to examine the relationships between the use of data-driven solutions in key areas of sustainable city management (urban planning, mobility and transportation management, and environment protection) and city’s position in the global smart cities ranking (the IESE Cities in Motion Index). Design/methodology/approach: A case study methodology is adopted to examine and compare the possibilities of implementing data-driven approaches in sustainable city management, in order to gain a better understanding of this new urban phenomenon. Data and information about data-driven smart city initiatives have been collected from secondary sources. The presented case studies were explored through desk research using online resources, such as the web pages of smart city initiatives. Smart Cities were selected based on their rankings in the IESE Cities in Motion Index 2022. In addition, multiple regressions were used to identify the relationship between the independent variables (environment protection, mobility and transportation management, urban planning) and dependent variable-value of city’s ranking in the IESE Cities in Motion Index. Findings: The results illustrate that the majority of cities use data-driven solutions in all categories to improve city management, efficiency and achieve sustainability goals. All research hypotheses have been accepted, therefore data-driven solutions implemented in all key areas of sustainable city management (urban planning, mobility and transportation management, and environment protection) positively influence performance of achieving sustainability goals. Research limitations/implications: The selection of a limited number of case studies is a limitation of this research. It is therefore important to explore the potential of data-driven smart city solutions in urban development and city management in more detail by considering more cases. Future research should explore the impacts of other variables related to sustainability, which can determinate performance of sustainable city management. A future study should try to validate the result by using a wider sample. Originality/value: The conducted research combines quantitative and quantitative analysis in order to identify the determinants of effective achievement of sustainable development goals in city management. This study provides a form of grounding for further discussion to debate over big data computing on forms of the operational functioning, planning, design, development, and governance of smart sustainable cities in the future.

14

Attitudes of Polish consumers toward sustainable logistics – pilot studies

Hanus Gabriela

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

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z. 195

177--188

EN

Purpose: The main objective of this article is to identify and analyze the attitudes of Polish consumers toward practices related to sustainable logistics. Design/methodology/approach: The results will be based on empirical research concerning attitudes toward practices related to sustainable logistics in a research sample of 130 consumers. The research was conducted in November 2023 and covered the entire area of Poland. Findings: The vast majority of respondents are positive when assessing their ecological attitude. Therefore, they have specific preferences in the field of urban transportation. Most often they use electric bicycles or scooters. In addition, they prefer goods to be delivered to parcel machines. They appreciate when shipments are combined into one delivery or the switching of paper transport documents into electronic ones. Priority solutions in sustainable logistics include, in the opinions of consumers, organizing intelligent and ecological warehouses and modernizing the transport fleet. In addition, almost half of the respondents assessed that they are aware of greenwashing in the logistics industry and in their opinion the phenomenon is mainly manifested by the abuse of not insignificant formations in the field of sustainable development. Research limitations/implications: Among the limitations of the research are the small sample size of the empirical study, as well as the limited nature of the survey questionnaire. Practical implications: This research has provided a lot of practical information that can be used in the business environment. Firstly, companies knowing consumer preferences can better adjust their marketing strategies to meet expectations, as well as develop more attractive product offerings. In addition, the research points to the need for public campaigns to educate consumers about sustainable logistics, as well as greenwashing. Social implications: This research can be a systemic shift toward more environmentally and socially responsible practices in both the private and public sectors. By influencing public attitudes, corporate behavior, policy development, and quality of life, it can contribute to building a more sustainable and resilient society for future generations. Originality/value: Up-to-date knowledge of consumer attitudes toward sustainable logistics activities is particularly important for both the business and government communities.

15

Assessment of the relationship between the occurrence of CSR instruments and industry 4.0 pillars in manufacturing companies in Poland

Skórnóg Damian

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2024

|

z. 195

531--543

EN

Purpose: The purpose of this article is to assess the relationship between the CSR (Corporate Social Responsibility) instruments used and the implemented pillars of Industry 4.0 in manufacturing companies in Poland. Design/methodology/approach: Literature review, survey questionnaire research, correlation analysis. Findings: The article describes the correlations between the CSR instruments used and the implemented Pillars of Industry 4.0 in manufacturing companies in Poland, based on the research conducted using a survey questionnaire. Subjecting the results of the questionnaires, to correlation analysis, made it possible to isolate the most strongly correlated pairs of variables, juxtaposing CSR Instruments and Industry 4.0 Pillars. The overall level of correlation is not at a very high level, which may indicate a moderate or differentiated relationship between CSR and Industry 4.0 Pillars. Despite such results, it was possible to observe distinctive pairs of variables that significantly stand out from the others. These include pairs such as Socially Engaged - Incremental Manufacturing, Investment in Ecology - Cybersecurity and Eco-labeling - Big Data. Despite the existing limitations, the area of research presented in the paper can inspire further research to identify the relationship between CSR and Industry 4.0. Originality/value: An assessment of the relationship between the CSR (Corporate Social Responsibility) instruments used and the implemented pillars of Industry 4.0 in manufacturing companies in Poland, which may inspire further research in this area.

16

Odsalanie wody morskiej wykorzystując proces destylacji membranowej : możliwości i szanse

Gontarek-Castro Emilia

Wiadomości Chemiczne

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2024

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[Z] 78, 3-4

303--320

PL

Problem dostępu do czystej wody na świecie staje się coraz bardziej poważny. Rozwój nowych zasobów wodnych jest kluczowy dla zapewnienia wystarczającej ilości wody pitnej dla ludzi i zwierząt, a także do zaspokojenia potrzeb przemysłowych, rolniczych i innych sektorów gospodarki. Istnieje wiele innowacyjnych rozwiązań, które mogą pomóc w rozwiązaniu tego problemu. Destylacja membranowa (ang. membrane distillation, MD) to obiecująca technologia odsalania wody morskiej ze względu na zdolność przetwarzania wód o wysokim zasoleniu i możliwość wykorzystania ciepła odpadowego lub alternatywnych źródeł energii. Jednakże, praktyczne zastosowania membran do MD są ograniczone przez niski przepływ pary wodnej i problem z porastaniem i zanieczyszczeniami na membranie. Z tego powodu, w ostatnim czasie wzrosło zainteresowanie opracowywaniem nowych materiałów membranowych o zwiększonej hydrofobowości w celu poprawy wydajności odsalania. Niniejsza praca, przedstawia przegląd danych literaturowych dotyczących destylacji membranowej, możliwości jej zastosowania i szans na jej transformację zgodnie z zasadami zielonej chemii i zrównoważonego rozwoju.

17

Sustainable multi-criteria decision port development framework

Županović Dino, Gundić Ana, Zekić Astrid, Mavra Tomislav

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2024

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Vol. 18 No. 4

831--845

EN

The specific features of various ports create difficulties for county port authorities in Zadar County and other coastal regions of Croatia in effectively performing daily tasks like managing, maintaining, constructing, and operating ports. The reason for this is the increased presence of various elements that directly affect decision-making regarding the port's progress. Therefore, it has been acknowledged that it is necessary to establish a methodology that allows decision-makers (county port authorities) to make objective decisions regarding the future direction of port development. This article presents a methodology proposal based on the AHP (Analytical Hierarchy Process) method of multi-criteria decision-making. When determining the methodology, special attention was paid to the decision-makers, who were found to possess specific professional knowledge in their activity but rarely possess prior expertise in multi-criteria decision-making. Hence, it was crucial to establish a methodology that would be both straightforward and suitable for adoption by decision-makers themselves. The AHP method, aided by a wide range of easily accessible and even cost-free tools, facilitates this through its visual representation of goals, criteria, sub-criteria, interconnections, and subsequent outcomes. This approach ensures the feasibility of ongoing monitoring throughout the decision-making process. Ultimately, the proposed methodology was verified on the examples of five port areas based on conducted empirical research, which, with their properties, satisfy different directions of development. At the same time, the obtained results confirm its applicability.

18

Super seven “S” trends (SSST) that shape the future of Philippine global ports

Baylon A. M.

TransNav : International Journal on Marine Navigation and Safety of Sea Transportation

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2024

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Vol. 18 No. 1

161--167

EN

The paper presents the port investments and initiatives the Philippine Port Authority spearheaded, including financial performance and operational highlights. The extensive readings on the Philippine Port Authority (PPA) report, online searches, documentary analysis, observations from the press, etc., and interviews were evaluated and divided into Seven Super "S" Trends (SSS-T). This 7S-T includes STEMS, SIZE or SCALE, SPEED, SMARTNESS, SUSTAINABILITY, SAFETY and SECURITY, SCARCITY, and SUPPLY, which together would influence the future of global ports. These "S" Trends will be explained in light of current (2017–2018) projects, trends, best practices, and port investments that are being started and carried out in the Philippines despite obstacles and difficulties. The paper concludes with a few closing thoughts. The views and analysis set out in this paper are those of the author(s) and not the official viewpoint of the Philippine Port Authority (PPA) unless otherwise the statement(s) of the person(s) have been quoted "in toto." The analyses provided in this paper are ideas and interpretations of the author(s) as maritime educators and researchers and are solely intended for academic discourse. Although the Seven Super Trends (SST) may use different terms, they may represent the same trends seen by port specialists because trends in ports are a global concern.

19

Assessing the impact of land cover and land use change on urban infrastructure resilience in Abuja, Nigeria: a case study from 2017 to 2022

Adewumi Rowland, Agbasi Okechukwu Ebuka

Structure and Environment

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2024

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Vol. 16, no. 1

6--17

EN

The remarkable feature of rapid urbanisation, which has fundamentally altered the distribution of land cover and land use (LULC), is what sets the contemporary era apart. The impact of these modifications on the resilience of Abuja’s metropolitan infrastructure from 2017 to 2022 is examined in this study. Our study examined the dynamic changes in LULC using information from remote sensing, geospatial analysis software, and land cover categorization techniques. The findings indicate major changes in Abuja’s topography, including a decrease in the number of water bodies, a decrease in the number of trees, the expansion of urban areas, changes in agricultural land use, and fluctuations in the amount of grazing land. The previously mentioned changes have significant consequences for urban infrastructure resilience, affecting various sectors such as water supply, transportation, housing, utilities, and food distribution systems. The infrastructure supporting water supply and sanitation may be severely stretched as the number of water bodies decreases, affecting the quantity and quality of accessible water supplies. As metropolitan areas expand, greater strain is placed on transportation infrastructure, exacerbating traffic congestion and complicating road maintenance difficulties. Changes in agricultural land use can have an impact on food production and distribution, hence affecting food security. Deforestation can cause ecological deterioration, affecting a variety of aspects such as temperature regulation, biological diversity, and atmospheric purity. Adaptive approaches, green infrastructure, and adopting sustainable urban design can all strengthen the resilience of urban infrastructure, according to this study. The significance of renewable energy adoption, community participation, green building laws, the establishment of public-private partnerships, integrated water resource management, and data-driven decision-making is emphasised. Improving legal frameworks that prioritise resilience and sustainability is critical. It is critical to have a complete grasp of the complicated links between changes in LULC, and the resilience of urban infrastructure in order to enable educated urban design and decision-making processes. Policymakers and urban planners may address and minimise the negative consequences of climate change while improving the overall quality of life in cities by using sustainable development practises. The findings of this study have the potential to dramatically improve Abuja’s people’s well-being and sustainability, especially given the variety of urban difficulties they encounter.

PL

Współczesną erę wyróżnia niezwykle szybka urbanizacja, która zasadniczo zmieniła rozkład pokrycia terenu i użytkowania gruntów (LULC). W niniejszym badaniu przeanalizowano wpływ tych zmian na odporność infrastruktury metropolitalnej Abudży w latach 2017-2022. Dynamiczne zmiany LULC zbadano przy użyciu informacji z teledetekcji, oprogramowania do analizy geoprzestrzennej oraz technik kategoryzacji pokrycia terenu. Wyniki wskazują na poważne zmiany w topografii Abudży, w tym spadek liczby zbiorników wodnych, spadek liczby drzew, ekspansję obszarów miejskich, zmiany w użytkowaniu gruntów rolnych i wahania w ilości pastwisk. Zmiany te mają znaczące konsekwencje dla odporności infrastruktury miejskiej, wpływając na różne sektory, takie jak zaopatrzenie w wodę, transport, mieszkalnictwo, usługi komunalne i systemy dystrybucji żywności. Infrastruktura wspierająca zaopatrzenie w wodę i urządzenia sanitarne może być poważnie obciążona, ponieważ malejąca liczba zbiorników wodnych odbija się na ilości i jakości dostępnych zasobów wody. Wraz z rozwojem obszarów metropolitalnych rośnie obciążenie infrastruktury transportowej, co zwiększa natężenie ruchu i komplikuje utrzymanie dróg. Zmiany w użytkowaniu gruntów rolnych wpływają na produkcję i dystrybucję żywności, a tym samym na bezpieczeństwo żywnościowe. Wylesianie może powodować pogorszenie stanu środowiska, wpływając na regulację temperatury, różnorodność biologiczną i czystość atmosfery. Według naszych badań podejście adaptacyjne, zielona infrastruktura i przyjęcie zrównoważonego projektowania urbanistycznego mogą wzmocnić odporność infrastruktury miejskiej. Podkreśla się znaczenie energii odnawialnej, udziału społeczności, przepisów dotyczących zielonego budownictwa, ustanowienia partnerstw publiczno-prywatnych, zintegrowanego zarządzania zasobami wodnymi i podejmowania decyzji w oparciu o dane. Kluczowe znaczenie ma poprawa ram prawnych, które powinny priorytetowo traktować kwestie odporności miejskiej oraz zrównoważonego rozwoju. Świadome projektowanie urbanistyczne i procesy decyzyjne możliwe są jedynie przy zrozumieniu skomplikowanych powiązań między zmianami w LULC a odpornością infrastruktury miejskiej. Zastosowanie praktyk zrównoważonego rozwoju umożliwi decydentom i urbanistom zminimalizowanie negatywnych konsekwencji zmian klimatycznych oraz podniesienie ogólnej jakości życia w miastach. Wyniki tego badania mogą potencjalnie znacznie poprawić dobrobyt i zrównoważony rozwój mieszkańców Abudży, zwłaszcza biorąc pod uwagę różnorodność napotykanych przez nich trudności miejskich.

20

Optimizing Energy Efficiency and Environmental Sustainability in Gas Distribution Station: A Comprehensive Analysis and Technological Solutions

Misevičiūtė Violeta, Rogoža Artur, Tučkus Rapolas

Rocznik Ochrona Środowiska

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2024

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Tom 26

251--263

EN

Abstract: It is important to address the world‘s energy crisis, increasing energy demand and changing climate by finding ways to recover unused energy and minimise primary and secondary energy use and emissions. The natural gas sector, which consists of the transmission network and gas distribution stations, is an important part of the global and Lithuanian energy sector. However, due to the operating principle of gas pressure regulators, the energy potential of high-pressure gas is not efficiently utilized in gas distribution stations. As a result, natural gas boilers are used for gas preheating, and gas distribution stations cause additional environmental pollution. This study aims to find ways to optimise the efficiency of gas distribution stations and reduce their negative environmental impact by identifying areas where energy is wasted and proposing alternative technological solutions: turbine expander (as an alternative for gas pressure regulator), ground heat pumps, solar collectors and photovoltaic solar cells (as gas preheating alternatives). The best alternative technological solution for the gas distribution station is evaluated based on energy efficiency, economic viability, and environmental impact (3E criteria).