Attila Akac

Mr. Attila Akac

Transport Economics & Environment, CERTH (Centre for Research and Technology Hellas), Athens, Attikí, Greece
orcid
avatar
Co-authors
avatar
Following
avatar
Followers

Research Focus & Metrics

Explore full metrics on Scilit

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
5 February 2024 in Sustainability
Verified
Journal Article
Open access
PDF file
AAAfroditi Anagnostopoulou
Afroditi Anagnostopoulou
DTDimitrios Tolikas
Dimitrios Tolikas
Evangelos D SpyrouEvangelos D Spyrou
Evangelos D Spyrou
AAAttila Akac
Attila Akac
Vassilios KappatosVassilios Kappatos
Vassilios Kappatos
In this paper, a decision-making tool is proposed that can utilize different strategies to deal with passenger flows in airport terminals. A simulation model has been developed to investigate these strategies, which can be updated and modified based on the current requirements of an airport terminal. The proposed tool could help airport managers and relevant decision makers proactively mitigate potential risks and evaluate crowd management strategies. The aim is to eliminate risk factors due to overcrowding and minimize passenger waiting times within the terminal to provide a seamless, safe and satisfying travel experience. Overcrowding in certain areas of the terminal makes it difficult for passengers to move freely and increases the risk of accidents (especially in the event of an emergency), security problems and service interruptions. In addition, long queues can lead to frustration among passengers and increase potential conflicts or stress-related incidents. Based on the derived results, the optimized routing of passengers using modern technological solutions is the most promising crowd management strategy for a sample airport that can handle 800 passengers per hour.
12 April 2023 in Scientific Reports
Verified
Journal Article
Open access
PDF file
ANAnja Nielsen
Anja Nielsen
JMJakob Michelmann
Jakob Michelmann
AAAttila Akac
Attila Akac
KPKristel Palts
Kristel Palts
AZAnne Zilles
Anne Zilles
OLOve Langeland
Ove Langeland
Open Science enhances information sharing and makes scientific results of transport research more transparent and accessible at all levels and to everyone allowing integrity and reproducibility. However, what future impacts will Open Science have on the societal, environmental and economic development within the transport sector? Using the Future Wheel methodology, we conducted a workshop with transport experts from both industry and academia to answer this question. The main findings of this study point in the direction of previous studies in other fields, in terms of increased innovation, increased efficiency, economic savings, more equality, and increased participation of citizens. In addition, we found several potential transport specific impacts: lower emission, faster travel times, improved traffic safety, increased awareness for transport policies, artificial intelligence improving mobility services. Several potential negative outcomes of Open Science were also identified by the expert group: job loss, new types of risks, increased cost, increased conflicts, time delays, increased inequality and increased energy consumption. If we know the negative outcomes it is much easier to put in place strategies that are sustainable for a broader stakeholder group, which also increase the probability of taking advantage of all the positive impacts of Open Science.
1 November 2021 in IOP Conference Series: Earth and Environmental Science
Verified
Conference Paper
Open access
DNDimitrios Nalmpantis
Dimitrios Nalmpantis
EGEvangelos Genitsaris
Evangelos Genitsaris
VAVasiliki Amprasi
Vasiliki Amprasi
AAAttila Akac
Attila Akac
AAAfroditi Anagnostopoulou
Afroditi Anagnostopoulou
The purpose of this paper is the optimization of an online shared freight transportation service platform with the use of Conjoint Analysis for the region of Balkan – Mediterranean. A Choice-Based Conjoint analysis was performed amongst the partners of the INTERREG Balkan-Med SCOPE project in order to optimize such a platform which is under development in the frame of the project. The results show that the best possible configuration of the platform should be offered at least in the local language, on a website, in the form of an auction platform, the charging should be done per shipment, and its range should be European / international. Moreover, selecting the right levels for each attribute is of crucial importance for the success of a freight transportation service platform, as the best configuration has a market share that is above 100% of the second-best configuration, according to the market simulation that was performed. Therefore, tools as Conjoint Analysis should be incorporated in the planning and design of such products in order to have the best marketable results for shippers, carriers, and consumers; a product that is customized according to their needs and preferences.
4 November 2020
Verified
Book Chapter
Closed access
PDF file
AAAttila Akac
Attila Akac
AAAfroditi Anagnostopoulou
Afroditi Anagnostopoulou
Dimitrios NalmpantisDimitrios Nalmpantis
Dimitrios Nalmpantis
1 December 2022 in IOP Conference Series: Earth and Environmental Science
Verified
Conference Paper
Open access
AAAttila Akac
Attila Akac
KTKonstantina Tsiatsiou
Konstantina Tsiatsiou
AAAngelos Angelakakis
Angelos Angelakakis
Road transportation sector is responsible for 21.8% of EU’s CO2eq emissions forcing the shift to a de-carbonised mobility scheme, whilst maintaining competitiveness and satisfying the increasing demand mobility needs. Thus, the development of electric vehicles (EVs) and the investigation of alternative fuels by the research community have emerged. Hydrogen is considered a good substitute fuel for the road transport sector if it is produced from renewable energy sources. Several cities have already started to replace a percentage of their conventional public transport fleet with fuel-cell electric vehicles (FCEV). This paper provides a detailed presentation of several best practices applied in small-medium scale European cities and regions. Best practices are investigated from a city-centred point of view to provide a clearer understanding of the hydrogen initiatives performed in the specific areas. The selected scenarios have demonstrated and implemented different state-of-the-art hydrogen applications in the hydrogen mobility supply chain, which could be potentially tested in other regions with similar geographical, economical and transport activities. Finally, the outcomes of this review study identify different challenges, barriers and opportunities of hydrogen mobility applications which other cities should take into consideration before investing in this technology.
1 November 2021 in IOP Conference Series: Earth and Environmental Science
Verified
Conference Paper
Open access
DNDimitrios Nalmpantis
Dimitrios Nalmpantis
EGEvangelos Genitsaris
Evangelos Genitsaris
VAVasiliki Amprasi
Vasiliki Amprasi
AAAttila Akac
Attila Akac
AAAfroditi Anagnostopoulou
Afroditi Anagnostopoulou
The purpose of this paper is to hierarchize the importance of the attributes of an online shared freight transportation service platform with the use of Multi-Actor Multi-Criteria Analysis (MAMCA). A MAMCA was performed amongst the partners of the INTERREG Balkan-Med SCOPE project in order to hierarchize the attributes of such a platform which is under development in the frame of the project. The results show that all the actors agree that the most important criterion is the Service, i.e., the services that the platform will provide. The research institute and the chambers actors agree that the second most important criterion is Access, i.e., the interface of the platform, while the university actor thinks that Range is the second most important criterion, i.e., the service area of the platform. Probably, the actors who are closer to the market understand better the needs, requirements, and preferences of the users than academia, and that once you set up the platform for a specific Range, it can be easily expanded to cover more areas in the future. Nevertheless, it has to be underlined that these results have been derived by a very small sample, i.e., the partners of the SCOPE project and probably a broader MAMCA, including more stakeholders, should be performed in order to validate them.