Wyniki wyszukiwania - BazTech

1

Reduced order averaged small-signal model of a current-fed multi-active bridge converter

Lukianov Mykola, Strzelecki Ryszard

Przegląd Elektrotechniczny

|

2026

|

R. 102, nr 5

9--17

EN

The Current-Fed Multi-Active Bridge (CF-MAB) converter has the potential to be used in multiterminal bidirectional electric vehicle charging stations, where each port must be controlled independently. However, due to the complexity of the converter’s structure and its control system, analyzing the converter and developing the control system presents a significant challenge. Therefore, this paper focuses on the development and validation of a reduced-order small-signal model for the CF-MAB converter. The resulting model shows an error of less than 1% near the analyzed operating points when compared to simulation results. Consequently, the model is used to analyze the PI controller parameters Kp and Ki to ensure stable converter operation.

PL

Przekształtnik typu Current-Fed Multi-Active Bridge (CF-MAB) ma potencjał do zastosowania w wieloterminalowych, dwukierunkowych stacjach ładowania pojazdów elektrycznych, gdzie każdy port musi być sterowany niezależnie. Jednak ze względu na złożoność struktury przekształtnika oraz jej systemu sterowania, analiza przekształtnika i projektowanie systemu sterowania stanowią istotne wyzwanie. W związku z tym niniejsza praca koncentruje się na opracowaniu i weryfikacji modelu małosygnałowego o zredukowanym rzędzie dla przekształtnika CF-MAB. Otrzymany model wykazuje błąd mniejszy niż 1% w pobliżu analizowanych punktów pracy w porównaniu z wynikami symulacji. W konsekwencji model ten został wykorzystany do analizy parametrów regulatora PI, Kp i Ki w celu zapewnienia stabilnej pracy.

2

Urban transformation through connected and automated vehicles: infrastructure, transportation, and societal impacts

Pritom Nixon Deb, Dey Nondon Lal

Zeszyty Naukowe. Transport / Politechnika Śląska

|

2025

|

z. 128

199--235

EN

The interconnected and self-driving vehicles (CAVs) are appearing in a world of human travel, where they promise enhanced safety, better efficiency, and a sustainable approach to transportation. But realizing their potential calls for a complete rethinking of today’s infrastructure and CAVs’ place in it. The research needed for that understanding to happen is very much in its early stages. This article serves as a beginning point for a full-scale study of the issue. It looks at the infrastructure changes that will be required to safely integrate CAVs into our lives, changes that already face several very serious obstacles. It also looks at the future societal and governmental changes the CAVs will force upon us. And it considers all these changes in light of what's become an essential landscape for the CAVs: the cybersecurity threat to the millions of lines of code the vehicles rely upon for their safe functioning. At the end, we'll also flag some gaps in what's known so far and what those gaps could mean for a future informed by the knowledge of the past.

3

Towards green transportation: an evaluation of strategies for carbon emissions mitigation in cement based transportation infrastructure

Alturki Salwan F.

Transport Problems

|

2025

|

T. 20, z. 4

51--64

EN

The cement industry plays an essential role in the development of transportation and logistics infrastructure, yet it continues to be classified as a major industrial source of global carbon dioxide (CO₂) emissions. The cement production process emits nearly 8% of the total anthropogenic emissions, positioning it as the second-highest industrial source of CO₂ emissions behind power generation. As sustainable transportation systems increasingly become a global priority, the decarbonization of cement-based infrastructure has emerged as an urgent challenge. The primary goal of the current study is to offer a comprehensive evaluation of key CO₂ mitigation strategies applicable to cement production, including the adoption of alternative fuels, reducing the ratio of clinker through supplementary cementitious materials, energy efficiency optimization, and carbon capture and storage technologies. This assessment offers a structured and multidimensional comparative assessment of these strategies in the cement industry. Using real-world cost and performance data for a standard 1-Mt/yr European cement plant, the analysis quantifies capital expenditure, levelized cost of abatement (€/t CO₂), CO₂ savings (kt CO₂/yr), and payback periods for each technology. The outcomes reveal that while operational improvements (e.g., alternative fuels use, supplementary cementitious materials) offer low-cost, short-payback solutions with moderate emission reductions, deep decarbonization requires carbon capture and electrification technologies, which remain cost-intensive and technically demanding. A marginal abatement cost curve and additional visual tools are developed to assist industry stakeholders in identifying optimal pathways. A sensitivity analysis on carbon price, discount rate, and electricity cost is conducted, and their effects on the levelized cost of abatement and the net economic benefit across the valuated technologies are quantified to examine the influence of policy and financing conditions. Based on these findings, a strategic roadmap is proposed that sequences near, mid, and long-term interventions. This work aims to support informed decision-making by plant managers, researchers, and policymakers striving toward net-zero goals in transport-related cement applications.

4

Financial risk assessment based on a dynamic model: a case of shipping investments

Zhykharieva Vlada, Ksandinov Nikos, Kopylova Olha, Vlasenko Olga

Transport Problems

|

2025

|

T. 20, z. 3

203--214

EN

Given the high uncertainty of the external business environment, risk assessment is of particular importance for companies operating in capital-intensive and highrisk sectors such as the shipping industry. This paper proposes a novel methodical approach to financial risk assessment that integrates several complementary methods. The approach is grounded in the development of a fully dynamic financial model that enables the calculation of projected financial indicators and the evaluation of risk through scenario analysis and descriptive statistical methods. The approach is examined using a case study of a new building project for a dry bulk vessel. Based on the financial model and key project drivers, a set of scenarios is constructed, and statistical indicators are derived to quantify the financial risks associated with the volatility of freight rates, operational expenditure levels, and investment financing conditions relevant to shipping companies.

5

Electron-conductive concrete as a self-deicing system

Stefaniuk Damian, Krakowiak Konrad J., Świtała Marcin, Bebłacz Danuta, Przybylski Piotr

Materiały Budowlane

|

2025

|

nr 10

1--10

EN

Electrically conductive concrete (ECC) is an innovative cementitious composite. The principle of operation, conduction mechanisms, and the influence of conductive additives on mechanical and electrical parameters are discussed. Literature results indicate that the use of suitable conductive admixtures reduces the resistivity of such a concrete from 102-106 Ω·m to even below 10⁻¹ Ω·m (ECC), enabling effective heat generation. Examples of laboratory studies, pilot projects, and real-world implementations are presented, taking into account performance efficiency, durability, and practical applicability under winter conditions. Special attention is given to the implementation potential of ECC in Poland. Key technological, organizational, and economic barriers to ECC deployment are also identified, along with suggested directions for future research. ECC is considered to have strong potential to enhance infrastructure resilience to extreme weather events and to reduce winter maintenance costs.

PL

Beton przewodzący prąd (ECC) to innowacyjny kompozyt cementowy. W artykule omówiono zasadę działania materiału, mechanizmy przewodnictwa oraz wpływ rodzaju domieszek przewodzących na parametry mechaniczne i elektryczne. Wyniki badań dostępnych w literaturze wskazują, że zastosowanie odpowiednich dodatków pozwala zmniejszyć rezystywność tradycyjnego betonu z 102-106 Ω·m do nawet 10⁻¹ Ω·m (ECC), co umożliwia efektywne wydzielanie ciepła. Przedstawiono również przykłady badań, wdrożeń pilotażowych i rzeczywistych, uwzględniając efektywność działania, trwałość oraz potencjał praktycznego zastosowania w warunkach zimowych. Szczególną uwagę poświęcono potencjałowi wdrożeniowemu ECC w Polsce. Zidentyfikowano najważniejsze bariery technologiczne, organizacyjne i ekonomiczne wdrażania ECC oraz wskazano potencjalne kierunki dalszych badań. Ocenia się, że ECC umożliwia zwiększanie odporności infrastruktury na zjawiska ekstremalne oraz ograniczanie kosztów jej utrzymania w warunkach zimowych.

6

Typologia oczekiwanie - dyskonfirmacja w ocenie infrastruktury transportowej miejscowości wypoczynkowych

Mroczek-Czetwertyńska Agnieszka, Marcinkowski Jakub, Czetwertyński Sławomir

Gospodarka Materiałowa i Logistyka

|

2025

|

nr 3

2--14

PL

Celem artykułu jest ocena zgodności oczekiwań turystów wobec infrastruktury transportowej w miejscowościach wypoczynkowych z ich rzeczywistymi doświadczeniami. W badaniu zastosowano teorię oczekiwanie–dyskonfirmacja (ECT) oraz test rang Wilcoxona do analizy danych zebranych metodą CAWI na próbie 847 turystów z Polski. Wyniki wskazują na negatywną dyskonfirmację we wszystkich 26 analizowanych zmiennych, przy czym największe rozbieżności dotyczą opłat za parkingi i komunikację oraz dostępności dla osób z niepełnosprawnościami. Na podstawie poziomu oczekiwań, wielkości dyskonfirmacji i siły efektu statystycznego opracowano typologię obejmującą cztery kategorie zmiennych: krytyczne niedociągnięcia, niespełnione nadzieje, niskie oczekiwania oraz ukryte skarby. Typologia ta stanowi praktyczne narzędzie priorytetyzacji inwestycji w infrastrukturę transportową destynacji turystycznych.

EN

The aim of the article is to assess the alignment between tourists’ expectations regarding transport infrastructure in resort towns and their actual experiences. The study applied Expectation- Confirmation Theory (ECT) and the Wilcoxon signed rank test to analyse data collected using the CAWI method from a sample of 847 tourists from Poland. The results indicate negative disconfirmation across all 26 analysed variables, with the largest discrepancies concerning parking and public transport fees, as well as accessibility for people with disabilities. Based on the level of expectations, magnitude of disconfirmation, and strength of statistical effect, a typology comprising four categories of variables was developed: critical shortcomings, unmet hopes, low expectations, and hidden gems. This typology serves as a practical tool for prioritizing investments in transport infrastructure of tourist destinations.

7

Infrastruktura mikromobilności a preferencje turystów w polskich miejscowościach wypoczynkowych

Mroczek-Czetwertyńska Agnieszka

Gospodarka Materiałowa i Logistyka

|

2025

|

nr 2

25--34

PL

W artykule przedstawiono wyniki badań własnych dotyczących wpływu infrastruktury mikromobilności na preferencje turystów w polskich miejscowościach wypoczynkowych. Celem badania była identyfikacja elementów infrastrukturalnych istotnych dla rozwoju mikromobilności w miejscowościach wypoczynkowych w Polsce. Wykorzystując model regresji logistycznej w badaniu przeprowadzonym na próbie 1000 respondentów, zidentyfikowano sześć kluczowych czynników wpływających na postrzeganie mikromobilności. Najsilniejszymi predyktorami pozytywnego postrzegania okazały się: dostępność wypożyczalni rowerów i hulajnóg, infrastruktura towarzysząca ścieżkom rowerowym oraz jakość dróg w miejscowości wypoczynkowej. Wyniki wskazują, że dla rozwoju mikromobilności w destynacjach turystycznych konieczne jest zapewnienie kompleksowej infrastruktury oraz uwzględnienie lokalnych uwarunkowań. Szczególnie jest to ważne w kontekście koncepcji odwróconej piramidy mobilności, której implementacja wymaga zrozumienia preferencji turystów oraz stopniowego wprowadzania rozwiązań ograniczających dominację transportu samochodowego na rzecz bardziej zrównoważonych form przemieszczania się.

EN

This article presents the results of our own research on the impact of micromobility infrastructure on tourist preferences in Polish holiday destinations. The aim of the study was to identify the infrastructural elements important for the development of micromobility in resorts in Poland. Using a logistic regression model in a study conducted on a sample of 1000 respondents, six key factors influencing the perception of micromobility were identified. The strongest predictors of positive perception were: availability of bicycle and scooter rentals, infrastructure accompanying cycling paths, and road quality in the holiday destination. The results indicate that for the development of micromobility in tourist destinations, it is necessary to provide comprehensive infrastructure and take local conditions into account. This is particularly important in the context of the inverted mobility pyramid concept, the implementation of which requires understanding tourist preferences and gradually introducing solutions that limit the dominance of car transport in favor of more sustainable forms of movement.

8

Public investment disbursement in transport infrastructure construction: current situation and solutions

Dung Nguyen Thi Tuyet, Toan Nguyen Quoc

Archives of Civil Engineering

|

2025

|

Vol. 71, nr 1

127--140

EN

Public investment is one of the important and decisive factors for the economic development process in Vietnam. It involves the government’s investment in public programs, projects, and investment subjects. The medium-term public investment plan for the period of 2021-2025 needs VND 2.87 million billion, focusing on priority sectors that are important and key to the economy, including transport infrastructure. The budget allocated for the transport sector accounts for the highest proportion (42.9%) but the development of modern and synchronized infrastructure has not yet met requirements. Currently, the disbursement work is slow and encounters many obstacles, affecting the effectiveness of capital utilization. According to the report of the Ministry of Transport, the disbursement rate of transport works in the period of 2016-2020 reached 69%. Therefore, this article analyzes the current situation of disbursement in transport infrastructure construction through reports of State management agencies, previous studies, uses SPSS software to quantify the criteria affecting this work. Furthermore, solutions for accelerating the public investment disbursement in transport infrastructure construction are proposed.

9

An approach to transport infrastructure design using a two-step method based on modified ant colony optimization

Korzeń Mariusz, Kruszyna Maciej

Archives of Civil Engineering

|

2025

|

Vol. 71, nr 2

67--82

EN

The main purpose of the paper is to develop a tool to effectively support the transport infrastructure planning process. The novel method is based on modified ant colony optimization and is used for evaluating new infrastructure sections in the public transport. The section could contain a single route as well as a combination of two or more routes. The authors propose a two-step evaluation. Step one uses a modified ant colony optimization to evaluate a single underground route. As a result, for each route, the effort that artificial ants have to cover the routes is obtained. Such effort is calculated considering the distance, total length, number of inhabitants, and areas with access to the rail network. In step two, the proposed routes are combined to create variants. The evaluation of combining routes use additional parameters like crossing time or travel time in alternative means. The case study located in one of the biggest agglomerations in Poland shows the method’s utility in the evaluation of options for a railway tunnel. The analyses show that all criteria have an influence on the results and that the new, two steps method gives an intriguing effect. The presented methodology contains novel elements and their implementation to specific transport infrastructure elements. The results are contrasted with an algorithm based on multi-criteria analysis, which showed the greater complexity of the proposed approach.

PL

Głównym celem pracy jest opracowanie narzędzia, które umożliwi efektywne wsparcie w procesie planowania infrastruktury transportowej głównie pod kątem transportu zbiorowego. Nowatorska metoda opiera się na zmodyfikowanym algorytmie mrówkowym i jest wykorzystywana do oceny proponowanych nowych odcinków infrastruktury. Ocenie mogą podlegać warianty składające się z jednej lub więcej tras, co stanowi duży atut proponowanego narzędzia. Autorzy proponują dwuetapową ocenę. W kroku pierwszym przy użyciu zmodyfikowanego algorytmu mrówkowego oceniane są pojedyncze trasy. W rezultacie dla każdej trasy uzyskuje się wysiłek, jaki wirtualne mrówki muszą włożyć na pokonanie jej. Wysiłek ten jest obliczany bazując na odległości, potencjału pasażerskiego, atrakcyjności obszarów oraz dostępności do sieci kolejowej. W kroku drugim proponowane trasy są łączone w warianty. Bazując na wartościach otrzymanych w kroku pierwszym, dla każdego wariantu wyliczana jest zmodyfikowana wartość wysiłku. W tym celu wykorzystuje się dodatkowe kryteria oceny związane z czasem przejazdu oraz kosztem realizacji. Studium przypadku zlokalizowane jest we Wrocławiu i dotyczy problemu utworzenia nowego odcinka średnicowego. Otrzymane wyniki pokazują użyteczność metody w ocenie wariantów tunelu kolejowego. Ważną kwestią jest również to, że wszystkie kryteria mają wpływ na ocenę końcową. Przedstawiona metodyka zawiera nowatorskie elementy i ich implementację do konkretnych elementów infrastruktury transportowej. Otrzymane wyniki zestawiono z algorytmem opartym na analizie wielokryterialnej. Wykazało to większą złożoność proponowanego narzędzia, a tym samym lepsze przeanalizowanie problemu.

10

Users’ satisfaction with intercity bus terminal quality in Lagos state, Nigeria

Salisu Umar Obafemi, Gafar Mubarak Olabanji, Akanmu Ayobami Ademola, Sanni Sekinat Motunrayo, Fasina Simeon Oluwagbenga

Zeszyty Naukowe. Transport / Politechnika Śląska

|

2024

|

z. 123

277--302

EN

Globally, efficient intercity public transport relies on well-designed and high-quality terminal facilities and services to enhance accessibility, mobility, and safety for passengers and freight. Despite governmental efforts, bus terminals in Nigerian urban areas are becoming hotspots for unregulated activities and traffic chaos. In response, this study investigates users’ satisfaction with Lagos State's intercity bus terminal quality, analysing socio-economic profiles, satisfaction levels with quality of terminal facilities (QoTF) and services (QoTS), and challenges impacting terminal operations. Using a cross-sectional survey, 200 questionnaires were distributed to terminal users, employing a multistage sampling technique. Descriptive (weighted mean analysis) and inferential (multiple linear regression [MLR] analysis) statistics were employed for data analysis. Results indicate that the majority of respondents are male, aged below 40, and permanent terminal users. Satisfaction is noted with 13 out of 24 parameters of QoTF, with top-ranking parameters including parking space, restaurant facilities, and waste disposal facilities. However, dissatisfaction is expressed with 8 out of 14 parameters of QoTS. Least-satisfied QoTS parameters include staff attitudes, passenger safety, and bus service reliability. Top-rated challenges affecting terminal operations are security concerns, sanitation facility deficiencies and insufficient passenger amenities. MLR analysis indicates a significant influence of terminal facilities on overall service satisfaction (F= 2.899, p= 0.000 <0.05). In conclusion, enhancing both terminal facilities and services is crucial for efficient operations in Lagos State's bus terminals. Recommendations include improving security measures, sanitary infrastructure and staff training to address user concerns and enhance satisfaction.

11

Transport system planning: interaction between capacity utilization and traffic congestion in Nigeria

Aderibigbe Oluwayemi-Oniya, Gumbo Trynos, Deji Joseph

Transport Problems

|

2024

|

T. 19, z. 2

47--55

EN

One of the greatest challenges most developing countries are facing is the need to improve the transportation systems in their cities. In achieving this, emphasis has been put on the role of infrastructure development to improve the mobility of residents and reduce the negative externalities, such as traffic congestion, associated with most cities in both developed and developing countries. Hence, this study evaluates the impact traffic volume, in relation to available infrastructure capacity, has on traffic congestion, within the dynamics of a rapidly developing urban environment. Though there appears to be a consistent state of slow-moving traffic on two of the roads studied, traffic congestion is not critical, which suggests that available infrastructure is being appropriately utilized. This study found a statistically significant negative relationship between capacity utilization and traffic congestion levels.

12

Green Areas That Accompany Transport Infrastructure Facilities: Biodiversity and Social Functions in Urban Space

Pięt Agata

Teka Komisji Urbanistyki i Architektury Oddział PAN w Krakowie

|

2024

|

T. 52/2

625--645

EN

Contemporary cities face many challenges, including climate change, which adversely affects the environment and biodiversity. Efforts are made to maintain existing and design new green areas, which, in addition to ecological benefits, also have a positive impact on the health and well-being of residents. Elements of nature are introduced in cities in various ways, as well as in new, not entirely obvious locations, e.g., as accompanying facilities related to transport. The study of three cases of green area solutions accompanying transport infrastructure facilities in the context of enhancing urban biodiversity and fulfilling social functions is the main subject of this work. The functional and spatial layouts of the areas and their position in relation to the ground level will also be analysed. An additional aim is to present current emerging trends in urban green areas design, characterized by the reuse of abandoned and undeveloped areas, the combination of functions and the integration with architecture and infrastructure facilities. The method of analysing source materials on the discussed examples was used and the site visits were carried out in 2013 (High Line), 2022 (Salesforce Transit Center Park) and 2023 (Platform Park). The analysis has shown that, regardless of the location of the transport infrastructure in relation to the level of the ground, the time of its construction and the way in which it is connected to the surroundings, there are great opportunities to introduce green spaces as an accompanying transport infrastructure which can affect biodiversity and the implementation of social functions in cities.

PL

Współczesne miasta stoją przed wieloma wyzwaniami związanymi m.in. ze zmianami klimatycznymi, które wpływają niekorzystnie na stan środowiska, a także na bioróżnorodność. Dąży się do utrzymania istniejących oraz projektowania nowych terenów zieleni, które oprócz korzyści ekologicznych wpływają również pozytywnie na zdrowie i samopoczucie mieszkańców. Elementy natury są wprowadzane w miastach na różne sposoby, a także w nowych, nie do końca oczywistych lokalizacjach, np. jako towarzyszące obiektom związanym z komunikacją. Główny cel artykułu to studium trzech przypadków terenów zieleni towarzyszących obiektom infrastruktury transportowej w kontekście zwiększenia bioróżnorodności w miastach i realizacji funkcji społecznych. Analizom poddano również rozwiązania funkcjonalno-przestrzenne obszarów i ich położenie względem poziomu terenu. Celem dodatkowym jest przedstawienie bieżących kształtujących się nurtów projektowania terenów zieleni w miastach, które cechuje ponowne wykorzystanie opuszczonych i niezagospodarowanych przestrzeni, łączenie funkcji, integracja z architekturą i obiektami infrastruktury. Zastosowano metodę analizy materiałów źródłowych dotyczących każdego z omawianych założeń, a także przeprowadzono wizje lokalne w latach 2013 (High Line), 2022 (Salesforce Transit Centre Park) i 2023 (Platform Park). Przeprowadzona analiza wykazała, że niezależnie od usytuowania infrastruktury transportowej względem poziomu terenu, jej czasu powstania i powiązania z otoczeniem, istnieją duże możliwości wprowadzania terenów zieleni jako funkcji towarzyszącej, mogącej wpływać zarówno na bioróżnorodność, jak i realizowanie funkcji społecznych w miastach.

13

Cyberbezpieczeństwo w transporcie szynowym – wyzwania i rozwiązania, w tym podsumowanie konferencji IT/OT w Transporcie Szynowym

Pawlik Marek

Przegląd Komunikacyjny

|

2024

|

R. 79, nr 1

2--6

PL

Artykuł przedstawia wyzwania i rozwiązania w zakresie cyberbezpieczeństwa transportu szynowego bazując na prezentacjach i dyskusjach jakie miały miejsce podczas Konferencji Naukowo-Technicznej IT/OT w Transporcie Szynowym 2023, która miała miejsce w dniach 29-31 stycznia 2024 r. Tak jak podczas konferencji artykuł rozpoczyna się od przedstawienia wyzwania z lotu ptaka, przechodzi do krótkiego przeglądu omawianych kwestii szczegółowych by dojść do sposobów budowania kompetencji pracowników oraz wytycznych dla cyberbezpieczeństwa kolei.

EN

Paper presents challenges and solutions regarding rail transport cybersecurity on the basis of the presentations and discussions that took place during the IT/OT in Rail Transport 2023 Scientific and Technical Conference, which took place on the 29th -31st January 2024. As at the conference, paper starts with helicopter view of the state of the art of cybersecurity in rail transport, proceeds to an overview of the specific issues discussed during conference, to reach the ways appropriate for staff competence building and guidelines for railway cybersecurity.

14

Evaluation in the Transport Sector and SDGs

Venezia Elisabetta, Zakowska Lidia

Inżynieria Mineralna

|

2024

|

Vol. 2, no. 2

art. no. 54

EN

This paper aims to verify the impact of transport infrastructures and services on realisation the UN sustainable development goals. The purpose is to propose a methodological literature review of the evaluation tools, on one side, and an analysis of case studies referred to some European countries, in particular Italy and Poland with the geographic dimension of the urban scale. This research gives evidence to the most recent methodologies which help evaluators and policy-makers to measure the link between the transport endowment and public expense allocated on this sector and how they contribute to reach SDGs. Therefore the research questions are: - how do we measure and evaluate the impact of the transport sector on SDGs? What has been done in Europe to reach the SDGs? Do we have best practices in Europe at urban level with regard to local transport? The results highlight that the methodologies currently in use are extremely refined and allow us to capture the measurement of impacts and results in terms of SDGs. The scientific methodological review therefore helps us to select the right metrics for each local administration involved. Further, the results obtained indicate that the European Union countries have been improving their transport impact in the last years, even though there are still significant territorial imbalances. The case studies highlight these results. This is particularly true for those inefficient countries, whose results suggest they should improve the transport sustainability mainly by reducing the greenhouse gas emissions, and increasing the sharing mobility in favor of collective modes.

PL

Niniejszy artykuł ma na celu weryfikację wpływu infrastruktury transportowej i usług na realizację celów zrównoważonego rozwoju ONZ. Celem jest zaproponowanie metodologicznego przeglądu literatury dotyczącego narzędzi oceny oraz analizy studiów przypadków odnoszących się do niektórych krajów europejskich, w szczególności Włoch i Polski, z uwzględnieniem wymiaru geograficznego skali miejskiej. Badania te dostarczają dowodów na najnowsze metodologie, które pomagają oceniającym i decydentom zmierzyć związek między infrastrukturą transportową a wydatkami publicznymi przeznaczonymi na ten sektor oraz jak przyczyniają się one do osiągnięcia celów zrównoważonego rozwoju. W związku z tym pytania badawcze brzmią: - jak mierzymy i oceniamy wpływ sektora transportowego na cele zrównoważonego rozwoju? Co udało się osiągnąć w Europie w celu realizacji celów zrównoważonego rozwoju? Czy mamy najlepsze praktyki w Europie na poziomie miejskim w zakresie transportu lokalnego? Wyniki podkreślają, że metodyka obecnie stosowana jest niezwykle wyrafinowana i pozwala uchwycić pomiar wpływu i wyników w kontekście celów zrównoważonego rozwoju. Przegląd metodologii naukowej pomaga w doborze odpowiednich wskaźników для każdej zaangażowanej administracji lokalnej. Dodatkowo uzyskane wyniki wskazują, że kraje Unii Europejskiej poprawiają swój wpływ transportowy w ostatnich latach, mimo że nadal istnieją znaczące nierówności terytorialne. Przykłady przypadków podkreślają te wyniki. Dotyczy to szczególnie tych krajów nieefektywnych, których wyniki sugerują, że powinny poprawić zrównoważenie transportu przede wszystkim przez redukcję emisji gazów cieplarnianych oraz zwiększenie mobilności wspólnej na rzecz trybów zbiorowych.

15

How to achieve sustainable operation of transport infrastructure development: a case study of 30 transport infrastructure projects in China

Chen Jie, Ma Chongsen

Archives of Civil Engineering

|

2024

|

Vol. 70, nr 4

521--534

EN

Transport infrastructure projects are distinguished by their high levels of investment, lengthy construction periods, and reliance on government subsidies during operation. These factors have far-reaching impacts, not only on the sustainable operation and success of the projects themselves, but also on the orderly functioning of society and the sustainable development of the economy. As such, it is of paramount importance to thoroughly investigate the sustainable operation of transport infrastructure. This paper examines the impact of sustainable operation on transport infrastructure by analysing 30 projects in China’s transport infrastructure sector. The study employs the qualitative comparative analysis method. To achieve the aim of this paper, we identified five dimensions for assessing a project’s sustainability. These include the economic environment of the construction site, operational market demand, government support capacity, and enterprise management level. This analysis offers valuable guidance for future engineering projects. Finally, the study identified seven strategies for achieving sustainable operation of the project. The findings revealed that the economic development status, population size, and government subsidies of the construction site do not effectively promote sustainable operation of the project. Rather, they can hinder enterprises’ market competitiveness. The study’s results can assist decision-makers in determining the feasibility of implementing sustainable management practices in the new project. Examine the factors that influence the achievement of sustainable business while enhancing the operational efficiency of ongoing initiatives. This research aims to produce a valuable addition to risk assessments in sustainable operation research and the advancement of transportation infrastructure reduction.

16

Development and financing of infrastructure investments to shape sustainable and resilient mobility

Motowidlak Urszula, Motowidlak Tomasz

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

|

2023

|

z. 170

349--370

EN

Purpose: The aim of the study is to identify the essential attributes that determine the development of a sustainable, innovative and resistant to disruption transport infrastructure and to answer two research questions: How to shape models for the development of sustainable and innovative transport infrastructure, while maintaining the logistic continuity of mobility and transport systems? and What actions should organizations take in the conditions of permanent change in order to maintain operational efficiency and cost-effectiveness of implemented investments, not only thinking about the possible return of the pandemic, but also about increasingly difficult access to resources, climate change and social needs? Design/methodology/approach: The research methods and techniques used included, among others: content analysis, cause and effect analysis, selected methods of qualitative and quantitative analysis, which were used to present and discuss the results of the study. Findings: Searching for methods of operationalization of the implementation of the assumptions of the new development paradigm, a conceptual framework for the model of sustainable development of transport infrastructure was developed. EU programs and instruments supporting the financing of activities in the field of development of sustainable, innovative and resilient transport infrastructure were reviewed. Attributes were indicated so that the development would strive for the simultaneous implementation of economic, social and environmental goals. Research limitations/implications: The study did not measure the sustainability of infrastructure investments in transport. The precondition for successfully performing such a task is the availability of an accurate data set and the selection of appropriate measurement indicators. This has implications for future research. Practical implications: One of the key challenges in cities is making decisions about investments in the development of economically effective, environmentally safe and socially important transport infrastructure. Hence, the development of algorithmic approaches that allow the use of the proposed qualitative model may contribute to improving the efficiency in making investment decisions.Originality/value: The originality of the conducted research was achieved through its measurable character. The proposed model can contribute to the improvement of decision-making tools in the field of allocation of public and other funds for investments, so that they contribute to the sustainability of mobility systems.

17

Identifying the current status of land transport infrastructure in Vietnam to support cross-border flows in southeast Asia (phase 1 conclusions)

Doński-Lesiuk Jakub

Transport Problems

|

2023

|

T. 18, z. 3

151--162

EN

This article presents selected aspects of the existing land infrastructure system in Vietnam that are important for cross-border transport. The aim of this paper is to present the results of the first phase of the study, which includes the analysis of the condition of the logistics infrastructure that supports the processes of international trade in goods. This phase includes the identification and initial assessment of the usefulness of the components of the logistics system in terms of its functionality and economic efficiency. The results define the scope of work necessary for the proper preparation of the logistics system in Vietnam for the needs related to ensuring the desirable efficiency of logistics corridors connecting Vietnam with China and neighboring regional markets of the Association of Southeast Asian Nations.

18

The place and role of freight transport in the Polish economy against the background of the European Union

Menes Maciej

Transport Samochodowy

|

2022

|

z. 2

10--16

EN

The article synthetically characterizes the Polish freight transport sector compared to its counterpart in the European Union. The article presents the changes during the years 1990-2019 taking place in the number of various types of transport means used, belonging to Poland and 27 European Union countries. The volume and structure of the freight transport performance of Poland and the European Union as well as the changes taking place in them over the last 30 years were also characterised. The reasons for changes in the structure of freight transport performance in Poland were analysed. Various types of transport infrastructure in Poland were described and analysed, and the changes taking place in it were presented. The impact of EU funds on changes in the transport infrastructure of Poland was also described.

PL

Artykuł syntetycznie charakteryzuje sektor polskiego transportu towarowego na tle jego odpowiednika w Unii Europejskiej. Artykuł przedstawia zmiany w latach 1990-2019 zachodzące w ilości eksploatowanych różnego rodzaju środków transportu należących do Polski oraz 27 krajów Unii Europejskiej. Scharakteryzowano również wielkość i strukturę pracy przewozowej transportu towarowego Polski i Unii Europejskiej oraz zachodzące w nich na przestrzeni ostatnich 30 lat zmiany. Przeanalizowano powody zmian w strukturze pracy przewozowej transportu towarowego w Polsce. Opisano i poddano analizie różnego typu infrastrukturę transportową Polski oraz przedstawiono zachodzące w niej na przestrzeni 30 lat zmiany. Opisano również wpływ unijnych środków na zmiany zachodzące w infrastrukturze transportowej na terenie Polski.

19

Identification of factors related to transport entrepreneurship influencing the economic development of Ukraine

Riepina Inna, Ligonenko Larysa, Sadovnyk Oleksandr, Dzyubenko Lyubov, Kovtun Vita

Transport Problems

|

2022

|

T. 17, z. 4

151--163

EN

The integration of Ukraine’s economy into the European space requires the dynamic and balanced development of all its sectors, especially the transport sector. The purpose of the research is to identify the factors related to transport entrepreneurship that affect the economic development of Ukraine, in particular regarding the formation of added value (gross regional product). The paper presents the author’s definition of transport entrepreneurship as an independent, systematic, and risky entrepreneurial activity in providing transport services. The results revealed a negative trend in the formation of the added value of the transport enterprises of Ukraine, both in terms of value and as a percentage of GDP. This prompted the authors to determine the factors affecting the formation of gross added value (gross regional product) by transport enterprises of Ukraine to further develop proposals aimed at their activation. Four models were created in the first stage of the research to achieve the goal. These models are based on gross regional product in transport, warehousing, postal and courier activities; gross regional product in transport, warehousing, and postal and courier activities per capita; gross value added in transport, warehousing, and postal and courier activities; and gross value added in transport, warehousing, and postal and courier activities per capita. In the second stage of the research, the fifth model with the highest correlation coefficients was built, which made it possible to identify the factors of negative and positive influence on the formation of gross added value (gross regional product) by transport enterprises in Ukraine. Based on the results, a number of measures are proposed to stimulate factors of positive influence and neutralize negative influence. The proposed tools for identifying the factors related to transport entrepreneurship that affect the economic development of Ukraine can serve as markers for the formation of the country’s post-war strategy in the field of transport entrepreneurship.

20

Transport and transport infrastructure of Ukraine in the pre-war period (2010-2021)

Radchenko Oleksandr, Kuczabski Aleksander, Boychuk Alina, Klimovych Serhiy

Prace Komisji Geografii Komunikacji PTG

|

2022

|

nr 25(2)

7--17

EN

The article researches the development state of transport and transport infrastructure in Ukraine over last years. The research findings specify the topicality of the issue solution concerning the enhancement of transport and transport infrastructure in the conditions of structural, energy and financial crises, as well as considering a destructive influence of COVID-19 pandemic, occupation of Crimea, an anti-terrorist operation in East of Ukraine and a full-scale intervention of the Russian Federation started on February 24, 2022. Such methods of improving transport and transport infrastructure development in Ukraine have been offered under the research findings: the increase of public administration level with regard to all aspects of transport infrastructure; the use of proactive management; activation of searches and implementation of investment projects; introduction of an institute of public- private partnership on transport; partial and temporary decrease of tax burden; the development of complex solutions for transport services consumers under the infrastructure areas; optimization of transport pricing, etc.