Sustainability performance assessment: models, approaches, and applications toward interdisciplinary and integrated solutions (SPA 2023) -- "University equity": students' facilities in major tourism destination towns -- Downscaling NUA: Matera new urban structure -- Enhancing territorial and community resilience through a structured institutional governance: the Resilience HUB of the Province of Potenza -- Sustainable Approaches in Water Tariff Design to Reduce Water Service Divide -- Identification of patterns of socio-economic and spatial processes via Principal Component Analysis and Clustering Algorithms. The Case study of Southern Italy -- Modeling of landscape for the integration of agrivoltaics using a GIS approach -- Tourism ecosystem domains -- Sustainable tourism ecosystem balancing territorial values: a place-based perspective -- The design of local actions toward EU2050 targets performed on Municipal Budgets -- An assessment of built-up areas trend among EU27 small Municipalities -- Innovation ecosystem: the added value in a unique UNESCO city -- Innovation ecosystem: the added value in a unique UNESCO city -- SuperABLE: Matera accessible for all -- "Back to the villages": design sustainable development scenarios for in-land areas. - Smart, Safe and Health Cities (SSHC 2023) -- Towards an urban smart mobility: preliminary results of an experimental investigation in Artena -- A preliminary effort to develop a framework of distance decay functions for new urban active mobility -- How to Ensure Walkable Pedestrian Paths? An Assessment in the Largo Felice Area of Cagliari (Italy) -- Modelling crime dynamics and risky places: a basic combination of crime theories and Space Syntax to evaluate spatial crime impedance -- Digital data in support of innovation for urban practice: women-inclusive walkable cities - Naples, a case study -- Measuring the Potential for Meaningful Usability of Spaces: The Case Studies of Two Social Housing Districts in Cagliari, Italy -- Smart and Sustainable Island Communities (SSIC 2023) -- Environmental and Economic Analysis of Using Recycled Concrete Aggregates in Composite Steel-Concrete Slabs -- Tourism Governance for Reaching Sustainability Objectives in Insular Territories - Case Study Dodecanese Islands' Complex, Greece -- Public Participation Project for the Sustainability of the Greek Island Gavdos -- Building Island Communities of Practice for Achieving Local Sustainable Cultural Tourism Objectives -- The integrated project of an energy and sustainable community as an input for urban regeneration and development -- Evaluation of urban spaces through the integration of Universal Design and Microsimulation: the case study of the Marina district in Cagliari (Italy) -- Assessing Tourism Environmental Sustainability in Mediterranean Insular Destinations - Case Study Zakynthos Island -- Recycling of Beached Posidonia Oceanica in the Construction Sector -- Overtourism as an emerging threat for sustainable island communities - Exploring indicative examples from the South Aegean Region, Greece. - Smart Transport and Logistics - Smart Supply Chains (SmarTransLog 2023) -- Rail ports as nodal gateways in the sea - land connections and the challenges of sustainable globalized markets -- How the Business Model impacts on the sustainability of fashion companies -- RFID and Counterfeiting: An Analysis of Current Trends in The Fashion Industry -- Bibliometric Analysis of Railways Transport Infrastructures for Supporting Tourism -- Circular economy and reverse logistics: a circularity matrix for the analysis of sustainable business models -- Ports of the future - Smartness and Sustainability (SmartPorts 2023) -- Methodologies for sustainable development of TEN-T/RFC corridors and core ports: economic impactsgenerated in port-related areas -- Sustainable development of railway corridors: methods and models for High Speed Rail (HSR) demand analysis -- Methodologies for sustainable development of TEN-T/RFC corridors and core ports: settlement capacity of industrial firms in port related areas -- Methodologies for sustainable development of TENT/ RFC corridors and core ports: estimation of time-series economic impact -- Evaluating the environmental sustainability of an intermodal freight logistics chain using the GLEC Framework -- A review of port KPIs considering safety, environment, and productivity as the three dimensions of port sustainability -- The Port - City Relations in the era of hybridization -- Methodologies for sustainable development of TEN-T/RFC corridors and core ports: workers mobility between urban and port-related areas -- Methodologies for sustainable development of TEN-T/RFC corridors and core ports: the role of governance in the export time optimization -- Methodologies for sustainable development of TEN-T/RFC corridors and core ports: public incentives for industrial activities location in port related areas.

This nine-volume set LNCS 14104 - 14112 constitutes the refereed workshop proceedings of the 23rd International Conference on Computational Science and Its Applications, ICCSA 2023, held at Athens, Greece, during July 3-6, 2023. The 350 full papers and 29 short papers and 2 PHD showcase papers included in this volume were carefully reviewed and selected from a total of 876 submissions. These nine-volumes includes the proceedings of the following workshops: Advances in Artificial Intelligence Learning Technologies: Blended Learning, STEM, Computational Thinking and Coding (AAILT 2023); Advanced Processes of Mathematics and Computing Models in Complex Computational Systems (ACMC 2023); Artificial Intelligence supported Medical data examination (AIM 2023); Advanced and Innovative web Apps (AIWA 2023); Assessing Urban Sustainability (ASUS 2023); Advanced Data Science Techniques with applications in Industry and Environmental Sustainability (ATELIERS 2023); Advances in Web Based Learning (AWBL 2023); Blockchain and Distributed Ledgers: Technologies and Applications (BDLTA 2023); Bio and Neuro inspired Computing and Applications (BIONCA 2023); Choices and Actions for Human Scale Cities: Decision Support Systems (CAHSC-DSS 2023); and Computational and Applied Mathematics (CAM 2023).