6G Goal-Oriented AI-enabled Learning and Semantic Communication Networks

Rezultaty

Foundations of Reasoning through Semantic-empowered Communications: First results

This deliverable will present functional specification, semantic rules and methods for compatibility in semantic interpretation as a first result in T4.1

Report on test scenarios and validation capabilities

This report details the selected technological components, the deployment timeline, and the validation methodology (T6.1) for the selected innovations issued from WP3-5 that will be implemented in the project’s testbeds.

Exploitation of knowledge and results Plan

This deliverable will indicate the plan on how industry and academia will exploit the results developed during the project’s lifetime and their sustainability for a long-term exploitation.

Control Strategies and Adaptive L1/L2 Functionalities for Semantic Communications: First results

It will present the preliminary findings of T5.1, including the L1/L2 protocols and the associated control signalling that lead to efficient implementation of semantic-empowered communications.

Dissemination, communication, and project website

This deliverable will provide a detailed plan for dissemination activities of the project and details on project website and other dissemination media adopted by the project.

Dissemination and Standardization action plan

This deliverable will include the detailed plan for standardization in 3GPP, ETSI, 6G-SNS pre-standardization WG, 5G-IA, ORAN-SC – RIC and possibly in other standardization bodies as appropriate.

Functional specifications, metrics and KPIs for 6G-GOALS wireless systems analysis: first results

It contains preliminary novel metrics, trade-offs, definitions and KPIs from T2.2.

Semantic data acquisition, representation and compression methodologies: First results

This deliverable will present first results on both theoretical bounds and achievable schemes for semantic-oriented sampling, processing and compression schemes designed in T3.2.

First project management periodic report

It includes the first half of the project’s technical work description and financial monitoring, at the project level and at each WP level. It will include the description of the technical contributions from each partner over the reporting period, as well as the action plan and revised risk management plans.

Reference system, scenarios, use cases analysis and requirements: first results

It contains the first results on reference scenarios, uses cases selection from T2.1.

Quality plan and initial Data Management Plan

It contains a detailed quality plan giving the project guidelines, communication practices, preparation and delivery of progress reports, etc. It will also defines how data generated in the project is exploited, accessed, curated and preserved, based on the template recommended by the EC.

Functional specifications, metrics and KPIs for 6G-GOALS wireless systems analysis: final results

It contains final novel metrics, trade-offs, definitions and KPIs from T2.2.

Publikacje

Transmit or Retransmit: A Tradeoff in Networked Control of Dynamical Processes Over Lossy Channels With Ideal Feedback

Autorzy: Touraj Soleymani, John S. Baras, Deniz Gündüz
Opublikowane w: IEEE Transactions on Information Theory, Numer 70, 2024, ISSN 0018-9448
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TIT.2024.3452976

SCSC: A Novel Standards-Compatible Semantic Communication Framework for Image Transmission

Autorzy: Xue Han, Yongpeng Wu, Zhen Gao, Biqian Feng, Yuxuan Shi, Deniz Gündüz, Wenjun Zhang
Opublikowane w: IEEE Transactions on Communications, 2025, ISSN 0090-6778
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TCOMM.2025.3529221

A Versatile Pilot Design Scheme for FDD Systems Utilizing Gaussian Mixture Models

Autorzy: Nurettin Turan, Benedikt Böck, Benedikt Fesl, Michael Joham, Deniz Gündüz, Wolfgang Utschick
Opublikowane w: IEEE Transactions on Wireless Communications, Numer 24, 2025, ISSN 1536-1276
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2025.3537496

Topological signal processing and learning: Recent advances and future challenges

Autorzy: Elvin Isufi, Geert Leus, Baltasar Beferull-Lozano, Sergio Barbarossa, Paolo Di Lorenzo
Opublikowane w: Signal Processing, Numer 233, 2025, ISSN 0165-1684
Wydawca: Elsevier BV
DOI: 10.1016/J.SIGPRO.2025.109930

Pragmatic Communication for Remote Control of Finite-State Markov Processes

Autorzy: Pietro Talli, Edoardo David Santi, Federico Chiariotti, Touraj Soleymani, Federico Mason, Andrea Zanella, Deniz Gündüz
Opublikowane w: IEEE Journal on Selected Areas in Communications, Numer 43, 2025, ISSN 1558-0008
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JSAC.2025.3559152

Adaptive layer and token selection for efficient fine-tuning of vision transformers

Autorzy: Alessio Devoto, Federico Alvetreti, Jary Pomponi, Paolo Di Lorenzo, Pasquale Minervini, Simone Scardapane
Opublikowane w: Neurocomputing, Numer 654, 2025, ISSN 0925-2312
Wydawca: Elsevier BV
DOI: 10.1016/J.NEUCOM.2025.131216

Goal-Oriented Source Coding and Filtering for Vehicular Communications

Autorzy: Jose Manuel Gimenez-Guzman, Israel Leyva-Mayorga, Petar Popovski
Opublikowane w: IEEE Internet of Things Journal, Numer 11, 2024, ISSN 2327-4662
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JIOT.2024.3367438

Process-and-Forward: Deep Joint Source-Channel Coding Over Cooperative Relay Networks

Autorzy: Chenghong Bian, Yulin Shao, Haotian Wu, Emre Ozfatura, Deniz Gündüz
Opublikowane w: IEEE Journal on Selected Areas in Communications, 2025, ISSN 0733-8716
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JSAC.2025.3531579

Private Collaborative Edge Inference via Over-the-Air Computation

Autorzy: Selim F. Yilmaz, Burak Hasircioğlu, Li Qiao, Denız Gündüz
Opublikowane w: IEEE Transactions on Machine Learning in Communications and Networking, Numer 3, 2025, ISSN 2831-316X
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TMLCN.2025.3526551

IEEE Communications Letters

Autorzy: Inacio de Souza, Joao Henrique; Saggese, Fabio; Soret, Beatriz; Popovski, Petar
Opublikowane w: IEEE Communications Letters, 2025, ISSN 1089-7798
Wydawca: IEEE
DOI: 10.1109/LCOMM.2025.3591962

Toward Understanding Federated Learning over Unreliable Networks

Autorzy: Chenyuan Feng; Ahmed Arafa; Zihan Chen; Mingxiong Zhao; Tony Q. S. Quek; Howard H. Yang
Opublikowane w: IEEE Transactions on Machine Learning in Communications and Networking, 2025, ISSN 2831-316X
Wydawca: IEEE
DOI: 10.1109/TMLCN.2024.3511475

Deep Joint Source-Channel Coding for Adaptive Image Transmission Over MIMO Channels

Autorzy: Haotian Wu, Yulin Shao, Chenghong Bian, Krystian Mikolajczyk, Deniz Gündüz
Opublikowane w: IEEE Transactions on Wireless Communications, Numer 23, 2024, ISSN 1536-1276
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3422794

A Theory of Semantic Communication

Autorzy: Yulin Shao, Qi Cao, Deniz Gündüz
Opublikowane w: IEEE Transactions on Mobile Computing, Numer 23, 2024, ISSN 1536-1233
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TMC.2024.3406375

Alternating Minimization Schemes for Computing Rate-Distortion-Perception Functions with <i>f</i>-Divergence Perception Constraints

Autorzy: Giuseppe Serra, Photios A. Stavrou, Marios Kountouris
Opublikowane w: IEEE Transactions on Information Theory, 2025, ISSN 0018-9448
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TIT.2025.3604602

Over-the-Air Inference Through Analog Computation Over Multi-hop MIMO Networks

Autorzy: Chenghong Bian, Meng Hua, Deniz Gündüz
Opublikowane w: IEEE Wireless Communications Letters, 2025, ISSN 2162-2337
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/LWC.2025.3602209

A Deep Joint Source-Channel Coding Scheme for Hybrid Mobile Multi-Hop Networks

Autorzy: Chenghong Bian, Yulin Shao, Deniz Gündüz
Opublikowane w: IEEE Journal on Selected Areas in Communications, Numer 43, 2025, ISSN 1558-0008
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JSAC.2025.3559134

Transmit or Retransmit: A Tradeoff in Networked Control of Dynamical Processes Over Lossy Channels With Ideal Feedback

Autorzy: Touraj Soleymani, John S. Baras, Deniz Gündüz
Opublikowane w: IEEE Transactions on Information Theory, Numer 70, 2024, ISSN 0018-9448
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TIT.2024.3452976

Explainable AI in 6G O-RAN: A Tutorial and Survey on Architecture, Use Cases, Challenges, and Future Research

Autorzy: Bouziane Brik, Hatim Chergui, Lanfranco Zanzi, Francesco Devoti, Adlen Ksentini, Muhammad Shuaib Siddiqui, Xavier Costa-Pèrez, Christos Verikoukis
Opublikowane w: IEEE Communications Surveys & Tutorials, 2024, ISSN 1553-877X
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/COMST.2024.3510543

Opportunistic Information-Bottleneck for Goal-Oriented Feature Extraction and Communication

Autorzy: Francesco Binucci; Paolo Banelli; Paolo Di Lorenzo; Sergio Barbarossa
Opublikowane w: IEEE Open Journal of the Communications Society, 2024, ISSN 2644-125X
Wydawca: IEEE
DOI: 10.48550/arxiv.2404.09218

Semantic V2X Communications for Image Transmission in 6G Systems

Autorzy: Jose Manuel Gimenez-Guzman, Israel Leyva-Mayorga, Petar Popovski
Opublikowane w: IEEE Network, Numer 38, 2024, ISSN 0890-8044
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/MNET.2024.3420214

AirNet: Neural Network Transmission Over the Air

Autorzy: Mikolaj Jankowski, Deniz Gündüz, Krystian Mikolajczyk
Opublikowane w: IEEE Transactions on Wireless Communications, Numer 23, 2024, ISSN 1536-1276
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3388329

Transformer-Aided Wireless Image Transmission With Channel Feedback

Autorzy: Haotian Wu, Yulin Shao, Emre Ozfatura, Krystian Mikolajczyk, Deniz Gündüz
Opublikowane w: IEEE Transactions on Wireless Communications, Numer 23, 2024, ISSN 1536-1276
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3386052

Unified Timing Analysis for Closed-Loop Goal-Oriented Wireless Communication

Autorzy: Lintao Li, Anders E. Kalør, Petar Popovski, Wei Chen
Opublikowane w: IEEE Transactions on Wireless Communications, 2025, ISSN 1536-1276
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TWC.2024.3525087

Massive Digital Over-the-Air Computation for Communication-Efficient Federated Edge Learning

Autorzy: Li Qiao, Zhen Gao, Mahdi Boloursaz Mashhadi, Deniz Gündüz
Opublikowane w: IEEE Journal on Selected Areas in Communications, Numer 42, 2024, ISSN 0733-8716
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JSAC.2024.3431572

Graph Neural Networks over the Air for Decentralized Tasks in Wireless Networks

Autorzy: Zhan Gao, Deniz Gündüz
Opublikowane w: IEEE Transactions on Signal Processing, 2025, ISSN 1053-587X
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/TSP.2025.3534685

6G: the catalyst for artificial general intelligence

Autorzy: Emilio Calvanese Strinati
Opublikowane w: Nature Reviews Electrical Engineering, 2024, ISSN 2948-1201
Wydawca: Springer Nature
DOI: 10.1038/S44287-024-00090-1

Joint Source–Channel Coding: Fundamentals and Recent Progress in Practical Designs

Autorzy: Deniz Gündüz, Michèle A. Wigger, Tze-Yang Tung, Ping Zhang, Yong Xiao
Opublikowane w: Proceedings of the IEEE, 2024, ISSN 0018-9219
Wydawca: Institute of Electrical and Electronics Engineers (IEEE)
DOI: 10.1109/JPROC.2024.3477331

Energy-Aware Joint Orchestration of 5G and Robots: Experimental Testbed and Field Validation

Autorzy: Groshev, Milan; Zanzi, Lanfranco; Delgado Pinillos, Carmen; Xi, Li; de la Oliva, Antonio; Costa-Pérez, Xavier
Opublikowane w: IEEE Transactions on Network and Service Management, 2025
Wydawca: IEEE
DOI: 10.5281/ZENODO.15308285

Sustainability in SNS JU Projects - Targets, Methodologies, Trade-offs and Implementation Considerations Towards 6G Systems

Autorzy: Rezaki, Ali; Trichias, Konstantinos; Mesodiakaki, Agapi; Gavras, Anastasius; Aseeva, Anna; Berardinelli, Gilberto; Osman, Hassan; Gutiérrez Terán, Jesús; Petersen, Katrina; Gramaglia, Marco; Katz, Marcos; Bezzi, Margot; Ghoraishi, Mir
Opublikowane w: 2025
Wydawca: Zenodo
DOI: 10.5281/ZENODO.15555292

Sustainability in SNS JU Projects - Targets, Methodologies, Trade-offs and Implementation Considerations Towards 6G Systems

Autorzy: Rezaki, Ali; Trichias, Konstantinos; Mesodiakaki, Agapi; Gavras, Anastasius; Aseeva, Anna; Berardinelli, Gilberto; Osman, Hassan; Gutiérrez Terán, Jesús; Petersen, Katrina; Gramaglia, Marco; Katz, Marcos; Bezzi, Margot; Ghoraishi, Mir
Opublikowane w: 2025
DOI: 10.5281/ZENODO.15555292

Towards 6G Architecture: Key Concepts, Challenges, and Building Blocks

Autorzy: Gramaglia, Marco, Bulakci, Ömer, Li Xi, Gavras Anastasius, Ericson Mårten, Kerboeuf Sylvaine, Larrabeiti David, Ghoraishi Mir, Mesodiakaki Agapi, Koumaras Harilaos, Robitzsch Sebastian, Asensio Garriga, Rodrigo Skarmeta, Gómez Antonio, Tsolkas, Dimitris
Opublikowane w: 2025
Wydawca: Zenodo

European Vision for the 6G Network Ecosystem

Autorzy: Uusitalo, Mikko; Bernardos, Carlos Jesus; Kaloxylos, Alexandros; Bourse, Didier Arnaud; Norp, Toon; Lønsethagen, Håkon; Hecker, Artur; Rugeland, Patrik; Papagianni, Chrysa; Bulakci, Ömer; Li, Xi; Ericson, Mårten; Anton-Haro, Carles; Massod Khorsandi, Baha
Opublikowane w: 2024
Wydawca: Zenodo
DOI: 10.5281/ZENODO.14230482

Quantum Semantic Communications for Graph-Based Models

Autorzy: N. Nunavath, M. I. Habibie, E. Calvanese Strinati, R. Bassoli, and F. H. P. Fitzek
Opublikowane w: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2025
Wydawca: IEEE
DOI: 10.1109/SPAWC60668.2024.10694659

GLOBECOM 2024 - 2024 IEEE Global Communications Conference

Opublikowane w: 2025
Wydawca: IEEE
DOI: 10.1109/GLOBECOM52923.2024

Optimization for Semantic-Aware Resource Allocation Under CPT-Based Utilities

Autorzy: Symeon Vaidanis, Photios A. Stavrou, Marios Kountouris
Opublikowane w: 2025 IEEE 26th International Workshop on Signal Processing and Artificial Intelligence for Wireless Communications (SPAWC), 2025
Wydawca: IEEE
DOI: 10.1109/SPAWC66079.2025.11143243

Wireless Point Cloud Transmission

Autorzy: Chenghong Bian, Yulin Shao, Deniz Gündüz
Opublikowane w: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2024
Wydawca: IEEE
DOI: 10.1109/SPAWC60668.2024.10694621

Learning Sheaf Laplacian Optimizing Restriction Maps

Autorzy: Leonardo Di Nino, Sergio Barbarossa, Paolo Di Lorenzo
Opublikowane w: 2024 58th Asilomar Conference on Signals, Systems, and Computers, 2025
Wydawca: IEEE
DOI: 10.1109/IEEECONF60004.2024.10942997

Relative Representations of Latent Spaces enable Efficient Semantic Channel Equalization

Autorzy: Tomás Hüttebräucker, Simone Fiorellino, Mohamed Sana, Paolo Di Lorenzo, Emilio Calvanese Strinati
Opublikowane w: 2025
Wydawca: IEEE
DOI: 10.1109/GCWKSHP64532.2024.11100849

Batch Selection and Communication for Active Learning with Edge Labeling

Autorzy: Victor Croisfelt, Shashi Raj Pandey, Osvaldo Simeone, Petar Popovski
Opublikowane w: 2024 IEEE International Conference on Communications Workshops (ICC Workshops), 2024
Wydawca: IEEE
DOI: 10.1109/ICCWORKSHOPS59551.2024.10615928

Pragmatic Goal-Oriented Communications Under Semantic-Effectiveness Channel Errors

Autorzy: Tomás Huttebraucker, Mohamed Sana, Emilio Calvanese Strinati
Opublikowane w: 2024 IEEE 21st Consumer Communications & Networking Conference (CCNC), 2024
Wydawca: IEEE
DOI: 10.1109/CCNC51664.2024.10454728

Goal-Oriented Communications Based on Recursive Early Exit Neural Networks

Autorzy: Jary Pomponi, Mattia Merluzzi, Alessio Devoto, Mateus Pontes Mota, Paolo Di Lorenzo, Simone Scardapane
Opublikowane w: 2024 58th Asilomar Conference on Signals, Systems, and Computers, 2025
Wydawca: IEEE
DOI: 10.1109/IEEECONF60004.2024.10942792

Optimizing RIS Impairments through Semantic Communication

Autorzy: Nour Hello, Mattia Merluzzi, Emilio Calvanese Strinati, Luca Sanguinetti
Opublikowane w: 2024 IEEE Globecom Workshops (GC Wkshps), 2025
Wydawca: IEEE
DOI: 10.1109/GCWKSHP64532.2024.11100987

Network Digital Twin for 5G-Enabled Mobile Robots

Autorzy: Luis Roda Sanchez, Lanfranco Zanzi, Xi Li, Guillem Gari, Xavier Costa Perez
Opublikowane w: 2025 IEEE Wireless Communications and Networking Conference (WCNC), 2025
Wydawca: IEEE
DOI: 10.48550/ARXIV.2502.02253

Soft Partitioning of Latent Space for Semantic Channel Equalization

Autorzy: Tomás Hüttebräucker, Mohamed Sana, Emilio Calvanese Strinati
Opublikowane w: 2024 19th International Symposium on Wireless Communication Systems (ISWCS), 2024
Wydawca: IEEE
DOI: 10.1109/ISWCS61526.2024.10639062

LISAC: Learned Coded Waveform Design for ISAC with OFDM

Autorzy: Chenghong Bian; Yumeng Zhang; Deniz Gündüz
Opublikowane w: 2025 IEEE Wireless Communications and Networking Conference (WCNC), 2025
Wydawca: IEEE
DOI: 10.1109/WCNC61545.2025.10978729

Enabling Edge Artificial Intelligence via Goal-oriented Deep Neural Network Splitting

Autorzy: Francesco Binucci, Mattia Merluzzi, Paolo Banelli, Emilio Calvanese Strinati, Paolo Di Lorenzo
Opublikowane w: 2024 19th International Symposium on Wireless Communication Systems (ISWCS), 2024
Wydawca: IEEE
DOI: 10.1109/ISWCS61526.2024.10639178

Coexistence of Pull and Push Communication in Wireless Access for IoT Devices

Autorzy: Sara Cavallero, Fabio Saggese, Junya Shiraishi, Shashi Raj Pandey, Chiara Buratti, Petar Popovski
Opublikowane w: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2024
Wydawca: IEEE
DOI: 10.1109/SPAWC60668.2024.10694005

Semantic Channel Equalizer: Modelling Language Mismatch in Multi-User Semantic Communications

Autorzy: Sana, Mohamed; Strinati, Emilio Calvanese
Opublikowane w: GLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023
Wydawca: IEEE
DOI: 10.48550/arxiv.2308.03789

Adaptive Semantic Token Selection for AI-native Goal-oriented Communications

Autorzy: Alessio Devoto, Jary Pomponi, Simone Petruzzi, Paolo Di Lorenzo, Simone Scardapane
Opublikowane w: 2024 IEEE Globecom Workshops (GC Wkshps), 2025
Wydawca: IEEE
DOI: 10.1109/GCWKSHP64532.2024.11100347

2025 IEEE Wireless Communications and Networking Conference (WCNC)

Opublikowane w: 2025, ISSN 1558-2612
Wydawca: IEEE
DOI: 10.1109/WCNC61545.2025.10978729

Semantic Communication Enhanced by Knowledge Graph Representation Learning

Autorzy: N. Hello, P. Di Lorenzo, E. Calvanese Strinati
Opublikowane w: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2024
Wydawca: IEEE
DOI: 10.1109/SPAWC60668.2024.10694291

Analyzing α-divergence in Gaussian Rate-Distortion-Perception Theory

Autorzy: Martha V. Sourla, Giuseppe Serra, Photios A. Stavrou, Marios Kountouris
Opublikowane w: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2024
Wydawca: IEEE
DOI: 10.1109/SPAWC60668.2024.10694296

Remote Estimation of Markov Processes over Costly Channels: On Implicit Information Benefits

Autorzy: Edoardo D. Santi, Touraj Soleymani, Deniz Gündüz
Opublikowane w: GLOBECOM 2024 - 2024 IEEE Global Communications Conference, 2025
Wydawca: IEEE
DOI: 10.1109/GLOBECOM52923.2024.10901661

Building the Self-Improvement Loop: Error Detection and Correction in Goal-Oriented Semantic Communications

Autorzy: Peizheng Li, Xinyi Lin, Adnan Aijaz
Opublikowane w: 2024 IEEE Conference on Standards for Communications and Networking (CSCN), 2025
Wydawca: IEEE
DOI: 10.1109/CSCN63874.2024.10849728

EcoPull:Sustainable IoT Image Retrieval Empowered by TinyML Models

Autorzy: Thorsager, Mathias; Croisfelt, Victor; Shiraishi, Junya; Popovski, Petar
Opublikowane w: Thorsager, M, Croisfelt, V, Shiraishi, J & Popovski, P 2024, EcoPull : Sustainable IoT Image Retrieval Empowered by TinyML Models. in GLOBECOM 2024 - 2024 IEEE Global Communications Conference. IEEE (Institute of Electrical and Electronics Engineers), pp. 5066-5071. https://doi.org/10.1109/GLOBECOM52923.2024.10901782, 2024
Wydawca: IEEE
DOI: 10.1109/GLOBECOM52923.2024.10901782

Rezultaty

Publikacje

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