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Tzovaras</title> <meta name="description" content="Search results for: Dimitrios Tzovaras"> <meta name="keywords" content="Dimitrios Tzovaras"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" href="https://waset.org"> <img src="https://cdn.waset.org/static/images/wasetc.png" alt="Open Science Research Excellence" title="Open Science Research Excellence" /> </a> <button class="d-block d-lg-none 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action="https://publications.waset.org/abstracts/search"> <div id="custom-search-input"> <div class="input-group"> <i class="fas fa-search"></i> <input type="text" class="search-query" name="q" placeholder="Author, Title, Abstract, Keywords" value="Dimitrios Tzovaras"> <input type="submit" class="btn_search" value="Search"> </div> </div> </form> </div> </div> <div class="row mt-3"> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Commenced</strong> in January 2007</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Frequency:</strong> Monthly</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Edition:</strong> International</div> </div> </div> <div class="col-sm-3"> <div class="card"> <div class="card-body"><strong>Paper Count:</strong> 66</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Dimitrios Tzovaras</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">66</span> A Vehicle Detection and Speed Measurement Algorithm Based on Magnetic Sensors</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Gkekas">Panagiotis Gkekas</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Sougles"> Christos Sougles</a>, <a href="https://publications.waset.org/abstracts/search?q=Dionysios%20Kehagias"> Dionysios Kehagias</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras"> Dimitrios Tzovaras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cooperative intelligent transport systems (C-ITS) can greatly improve safety and efficiency in road transport by enabling communication, not only between vehicles themselves but also between vehicles and infrastructure. For that reason, traffic surveillance systems on the road are of great importance. This paper focuses on the development of an on-road unit comprising several magnetic sensors for real-time vehicle detection, movement direction, and speed measurement calculations. Magnetic sensors can feel and measure changes in the earth’s magnetic field. Vehicles are composed of many parts with ferromagnetic properties. Depending on sensors’ sensitivity, changes in the earth’s magnetic field caused by passing vehicles can be detected and analyzed in order to extract information on the properties of moving vehicles. In this paper, we present a prototype algorithm for real-time, high-accuracy, vehicle detection, and speed measurement, which can be implemented as a portable, low-cost, and non-invasive to existing infrastructure solution with the potential to replace existing high-cost implementations. The paper describes the algorithm and presents results from its preliminary lab testing in a close to real condition environment. Acknowledgments: Work presented in this paper was co-financed by the European Regional Development Fund of the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship, and Innovation (call RESEARCH–CREATE–INNOVATE) under contract no. Τ1EDK-03081 (project ODOS2020). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=magnetic%20sensors" title="magnetic sensors">magnetic sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=vehicle%20detection" title=" vehicle detection"> vehicle detection</a>, <a href="https://publications.waset.org/abstracts/search?q=speed%20measurement" title=" speed measurement"> speed measurement</a>, <a href="https://publications.waset.org/abstracts/search?q=traffic%20surveillance%20system" title=" traffic surveillance system"> traffic surveillance system</a> </p> <a href="https://publications.waset.org/abstracts/151555/a-vehicle-detection-and-speed-measurement-algorithm-based-on-magnetic-sensors" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151555.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">121</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">65</span> A Simple Algorithm for Real-Time 3D Capturing of an Interior Scene Using a Linear Voxel Octree and a Floating Origin Camera</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vangelis%20Drosos">Vangelis Drosos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tsoukalos"> Dimitrios Tsoukalos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tsolis"> Dimitrios Tsolis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We present a simple algorithm for capturing a 3D scene (focused on the usage of mobile device cameras in the context of augmented/mixed reality) by using a floating origin camera solution and storing the resulting information in a linear voxel octree. Data is derived from cloud points captured by a mobile device camera. For the purposes of this paper, we assume a scene of fixed size (known to us or determined beforehand) and a fixed voxel resolution. The resulting data is stored in a linear voxel octree using a hashtable. We commence by briefly discussing the logic behind floating origin approaches and the usage of linear voxel octrees for efficient storage. Following that, we present the algorithm for translating captured feature points into voxel data in the context of a fixed origin world and storing them. Finally, we discuss potential applications and areas of future development and improvement to the efficiency of our solution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=voxel" title="voxel">voxel</a>, <a href="https://publications.waset.org/abstracts/search?q=octree" title=" octree"> octree</a>, <a href="https://publications.waset.org/abstracts/search?q=computer%20vision" title=" computer vision"> computer vision</a>, <a href="https://publications.waset.org/abstracts/search?q=XR" title=" XR"> XR</a>, <a href="https://publications.waset.org/abstracts/search?q=floating%20origin" title=" floating origin"> floating origin</a> </p> <a href="https://publications.waset.org/abstracts/136753/a-simple-algorithm-for-real-time-3d-capturing-of-an-interior-scene-using-a-linear-voxel-octree-and-a-floating-origin-camera" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136753.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">133</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">64</span> Location3: A Location Scouting Platform for the Support of Film and Multimedia Industries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzilopoulos">Dimitrios Tzilopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Symeonidis"> Panagiotis Symeonidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Loufakis"> Michael Loufakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimosthenis%20Ioannidis"> Dimosthenis Ioannidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras"> Dimitrios Tzovaras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The domestic film industry in Greece has traditionally relied heavily on state support. While film productions are crucial for the country's economy, it has not fully capitalized on attracting and promoting foreign productions. The lack of motivation, organized state support for attraction and licensing, and the absence of location scouting have hindered its potential. Although recent legislative changes have addressed the first two of these issues, the development of a comprehensive location database and a search engine that would effectively support location scouting at the pre-production location scouting is still in its early stages. In addition to the expected benefits of the film, television, marketing, and multimedia industries, a location-scouting service platform has the potential to yield significant financial gains locally and nationally. By promoting featured places like cultural and archaeological sites, natural monuments, and attraction points for visitors, it plays a vital role in both cultural promotion and facilitating tourism development. This study introduces LOCATION3, an internet platform revolutionizing film production location management. It interconnects location providers, film crews, and multimedia stakeholders, offering a comprehensive environment for seamless collaboration. The platform's central geodatabase (PostgreSQL) stores each location’s attributes, while web technologies like HTML, JavaScript, CSS, React.js, and Redux power the user-friendly interface. Advanced functionalities, utilizing deep learning models, developed in Python, are integrated via Node.js. Visual data presentation is achieved using the JS Leaflet library, delivering an interactive map experience. LOCATION3 sets a new standard, offering a range of essential features to enhance the management of film production locations. Firstly, it empowers users to effortlessly upload audiovisual material enriched with geospatial and temporal data, such as location coordinates, photographs, videos, 360-degree panoramas, and 3D location models. With the help of cutting-edge deep learning algorithms, the application automatically tags these materials, while users can also manually tag them. Moreover, the application allows users to record locations directly through its user-friendly mobile application. Users can then embark on seamless location searches, employing spatial or descriptive criteria. This intelligent search functionality considers a combination of relevant tags, dominant colors, architectural characteristics, emotional associations, and unique location traits. One of the application's standout features is the ability to explore locations by their visual similarity to other materials, facilitated by a reverse image search. Also, the interactive map serves as both a dynamic display for locations and a versatile filter, adapting to the user's preferences and effortlessly enhancing location searches. To further streamline the process, the application facilitates the creation of location lightboxes, enabling users to efficiently organize and share their content via email. Going above and beyond location management, the platform also provides invaluable liaison, matchmaking, and online marketplace services. This powerful functionality bridges the gap between visual and three-dimensional geospatial material providers, local agencies, film companies, production companies, etc. so that those interested in a specific location can access additional material beyond what is stored on the platform, as well as access production services supporting the functioning and completion of productions in a location (equipment provision, transportation, catering, accommodation, etc.). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20learning%20models" title="deep learning models">deep learning models</a>, <a href="https://publications.waset.org/abstracts/search?q=film%20industry" title=" film industry"> film industry</a>, <a href="https://publications.waset.org/abstracts/search?q=geospatial%20data%20management" title=" geospatial data management"> geospatial data management</a>, <a href="https://publications.waset.org/abstracts/search?q=location%20scouting" title=" location scouting"> location scouting</a> </p> <a href="https://publications.waset.org/abstracts/169034/location3-a-location-scouting-platform-for-the-support-of-film-and-multimedia-industries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/169034.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">71</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">63</span> Intelligent Cooperative Integrated System for Road Safety and Road Infrastructure Maintenance</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Gkekas">Panagiotis Gkekas</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Sougles"> Christos Sougles</a>, <a href="https://publications.waset.org/abstracts/search?q=Dionysios%20Kehagias"> Dionysios Kehagias</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras"> Dimitrios Tzovaras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents the architecture of the “Intelligent cooperative integrated system for road safety and road infrastructure maintenance towards 2020” (ODOS2020) advanced infrastructure, which implements a number of cooperative ITS applications based on Internet of Things and Infrastructure-to-Vehicle (V2I) technologies with the purpose to enhance the active road safety level of vehicles through the provision of a fully automated V2I environment. The primary objective of the ODOS2020 project is to contribute to increased road safety but also to the optimization of time for maintenance of road infrastructure. The integrated technological solution presented in this paper addresses all types of vehicles and requires minimum vehicle equipment. Thus, the ODOS2020 comprises a low-cost solution, which is one of its main benefits. The system architecture includes an integrated notification system to transmit personalized information on road, traffic, and environmental conditions, in order for the drivers to receive real-time and reliable alerts concerning upcoming critical situations. The latter include potential dangers on the road, such as obstacles or road works ahead, extreme environmental conditions, etc., but also informative messages, such as information on upcoming tolls and their charging policies. At the core of the system architecture lies an integrated sensorial network embedded in special road infrastructures (strips) that constantly collect and transmit wirelessly information about passing vehicles’ identification, type, speed, moving direction and other traffic information in combination with environmental conditions and road wear monitoring and predictive maintenance data. Data collected from sensors is transmitted by roadside infrastructure, which supports a variety of communication technologies such as ITS-G5 (IEEE-802.11p) wireless network and Internet connectivity through cellular networks (3G, LTE). All information could be forwarded to both vehicles and Traffic Management Centers (TMC) operators, either directly through the ITS-G5 network, or to smart devices with Internet connectivity, through cloud-based services. Therefore, through its functionality, the system could send personalized notifications/information/warnings and recommendations for upcoming events to both road users and TMC operators. In the course of the ODOS2020 project pilot operation has been conducted to allow drivers of both C-ITS equipped and non-equipped vehicles to experience the provided added value services. For non-equipped vehicles, the provided information is transmitted to a smartphone application. Finally, the ODOS2020 system and infrastructure is appropriate for installation on both urban, rural, and highway environments. The paper presents the various parts of the system architecture and concludes by outlining the various challenges that had to be overcome during its design, development, and deployment in a real operational environment. Acknowledgments: Work presented in this paper was co-financed by the European Regional Development Fund of the European Union and Greek national funds through the Operational Program Competitiveness, Entrepreneurship and Innovation (call RESEARCH–CREATE–INNOVATE) under contract no. Τ1EDK-03081 (project ODOS2020). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=infrastructure%20to%20vehicle" title="infrastructure to vehicle">infrastructure to vehicle</a>, <a href="https://publications.waset.org/abstracts/search?q=intelligent%20transportation%20systems" title=" intelligent transportation systems"> intelligent transportation systems</a>, <a href="https://publications.waset.org/abstracts/search?q=internet%20of%20things" title=" internet of things"> internet of things</a>, <a href="https://publications.waset.org/abstracts/search?q=road%20safety" title=" road safety"> road safety</a> </p> <a href="https://publications.waset.org/abstracts/151556/intelligent-cooperative-integrated-system-for-road-safety-and-road-infrastructure-maintenance" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151556.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">123</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">62</span> Competitiveness and Pricing Policy Assessment for Resilience Surface Access System at Airports</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Considering a worldwide tendency, air transports are growing very fast and many changes have taken place in planning, management and decision making process. Given the complexity of airport operation, the best use of existing capacity is the key driver of efficiency and productivity. This paper deals with the evaluation framework for the ground access at airports, by using a set of mode choice indicators providing key messages towards airport’s ground access performance. The application presents results for a sample of 12 European airports, illustrating recommendations to define policy and improve service for the air transport access chain. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=airport%20ground%20access" title="airport ground access">airport ground access</a>, <a href="https://publications.waset.org/abstracts/search?q=air%20transport%20chain" title=" air transport chain"> air transport chain</a>, <a href="https://publications.waset.org/abstracts/search?q=airport%20access%20performance" title=" airport access performance"> airport access performance</a>, <a href="https://publications.waset.org/abstracts/search?q=airport%20policy" title=" airport policy"> airport policy</a> </p> <a href="https://publications.waset.org/abstracts/56760/competitiveness-and-pricing-policy-assessment-for-resilience-surface-access-system-at-airports" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56760.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">370</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">61</span> An Optimization Modelling to Evaluate Flights Scheduling at Tourist Airports</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Airport’s serving a tourist destination are an essential counterpart of the tourist demand supply chain, and their productivity is related to the region’s attractiveness and is enhanced by the air transport business. In this paper, the evaluation framework of the scheduled flights between two tourist airports is taken into consideration. By adopting a systemic approach, the arrivals from an airport that its connectivity heavily depended on the departures of another major airport are reviewed. The methodology framework, based on inventory control theory and the numerical example, promotes the use of the modelling formulation. The results would be essential for comparison and exercising to other similar cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=airport%20connectivity" title="airport connectivity">airport connectivity</a>, <a href="https://publications.waset.org/abstracts/search?q=inventory%20control" title=" inventory control"> inventory control</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=optimum%20allocation" title=" optimum allocation"> optimum allocation</a> </p> <a href="https://publications.waset.org/abstracts/80747/an-optimization-modelling-to-evaluate-flights-scheduling-at-tourist-airports" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80747.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">334</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">60</span> Analysis of the Probable Maximum Flood in Hydrologic Design Using Different Functions of Rainfall-Runoff Transformation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Evangelos%20Baltas">Evangelos Baltas</a>, <a href="https://publications.waset.org/abstracts/search?q=Elissavet%20Feloni"> Elissavet Feloni</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Karpouzos"> Dimitrios Karpouzos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A crucial issue in hydrologic design is the sizing of structures and flood-control works in areas with limited data. This research work highlights the significant variation in probable maximum flood (PMF) for a design hyetograph, using different theoretical functions of rainfall-runoff transformation. The analysis focuses on seven subbasins with different characteristics in the municipality of Florina, northern Greece. This area is a semi-agricultural one which hosts important activities, such as the operation of one of the greatest fields of lignite for power generation in Greece. Results illustrate the notable variation in estimations among the methodologies used for the examined subbasins. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rainfall" title="rainfall">rainfall</a>, <a href="https://publications.waset.org/abstracts/search?q=runoff" title=" runoff"> runoff</a>, <a href="https://publications.waset.org/abstracts/search?q=hydrologic%20design" title=" hydrologic design"> hydrologic design</a>, <a href="https://publications.waset.org/abstracts/search?q=PMF" title=" PMF"> PMF</a> </p> <a href="https://publications.waset.org/abstracts/72657/analysis-of-the-probable-maximum-flood-in-hydrologic-design-using-different-functions-of-rainfall-runoff-transformation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/72657.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">254</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Investigation of Optical Requirements for Power System Assets Monitoring with Unmanned Aerial Vehicles</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ioana%20Pisica">Ioana Pisica</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Gkritzapis"> Dimitrios Gkritzapis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The significance of UAS in scientific applications has been amply demonstrated in recent years. The combinations of portability and quasi-static positioning by means of flying in close loop path make them versatile and efficient in the inspection of power systems infrastructure. In this paper, we critically assess several platforms and sensor capabilities to identify their pros and cons in relation to the power systems assets to be monitored. In this respect, it is paramount the flights to be conducted by using UAS which bear certain suitable features, such as responsive and easy control, video capturing in real time, autonomous routing of pre-planned flight programming with differentiating payloads. The outcome of this research is a set of optimal requirements for power system assets monitoring with UAS. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=platforms" title="platforms">platforms</a>, <a href="https://publications.waset.org/abstracts/search?q=power%20system" title=" power system"> power system</a>, <a href="https://publications.waset.org/abstracts/search?q=sensors" title=" sensors"> sensors</a>, <a href="https://publications.waset.org/abstracts/search?q=UAVs" title=" UAVs"> UAVs</a> </p> <a href="https://publications.waset.org/abstracts/83718/investigation-of-optical-requirements-for-power-system-assets-monitoring-with-unmanned-aerial-vehicles" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83718.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">285</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Microstructural Interactions of Ag and Sc Alloying Additions during Casting and Artificial Ageing to a T6 Temper in a A356 Aluminium Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Bakavos">Dimitrios Bakavos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tsivoulas"> Dimitrios Tsivoulas</a>, <a href="https://publications.waset.org/abstracts/search?q=Chaowalit%20Limmaneevichitr"> Chaowalit Limmaneevichitr</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aluminium cast alloys, of the Al-Si system, are widely used for shape castings. Their microstructures can be further improved on one hand, by alloying modification and on the other, by optimised artificial ageing. In this project four hypoeutectic Al-alloys, the A356, A356+ Ag, A356+Sc, and A356+Ag+Sc have been studied. The interactions of Ag and Sc during solidification and artificial ageing at 170°C to a T6 temper have been investigated in details. The evolution of the eutectic microstructure is studied by thermal analysis and interrupted solidification. The ageing kinetics of the alloys has been identified by hardness measurements. The precipitate phases, number density, and chemical composition has been analysed by means of transmission electron microscopy (TEM) and EDS analysis. Furthermore, the SHT effect onto the Si eutectic particles for the four alloys has been investigated by means of optical microscopy, image analysis, and the UTS strength has been compared with the UTS of the alloys after casting. The results suggest that the Ag additions, significantly enhance the ageing kinetics of the A356 alloy. The formation of β” precipitates were kinetically accelerated and an increase of 8% and 5% in peak hardness strength has been observed compared to the base A356 and A356-Sc alloy. The EDS analysis demonstrates that Ag is present on the β” precipitate composition. After prolonged ageing 100 hours at 170°C, the A356-Ag exhibits 17% higher hardness strength compared to the other three alloys. During solidification, Sc additions change the macroscopic eutectic growth mode to the propagation of a defined eutectic front from the mold walls opposite to the heat flux direction. In contrast, Ag has no significance effect on the solidification mode revealing a macroscopic eutectic growth similar to A356 base alloy. However, the mechanical strength of the as cast A356-Ag, A356-Sc, and A356+Ag+Sc additions has increased by 5, 30, and 35 MPa, respectively. The outcome is a tribute to the refining of the eutectic Si that takes place which it is strong in the A356-Sc alloy and more profound when silver and scandium has been combined. Moreover after SHT the Al alloy with the highest mechanical strength, is the one with Ag additions, in contrast to the as-cast condition where the Sc and Sc+Ag alloy was the strongest. The increase of strength is mainly attributed to the dissolution of grain boundary precipitates the increase of the solute content into the matrix, the spherodisation, and coarsening of the eutectic Si. Therefore, we could safely conclude for an A356 hypoeutectic alloy additions of: Ag exhibits a refining effect on the Si eutectic which is improved when is combined with Sc. In addition Ag enhance, the ageing kinetics increases the hardness and retains its strength at prolonged artificial ageing in a Al-7Si 0.3Mg hypoeutectic alloy. Finally the addition of Sc is beneficial due to the refinement of the α-Al grain and modification-refinement of the eutectic Si increasing the strength of the as-cast product. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ageing" title="ageing">ageing</a>, <a href="https://publications.waset.org/abstracts/search?q=casting" title=" casting"> casting</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20strength" title=" mechanical strength"> mechanical strength</a>, <a href="https://publications.waset.org/abstracts/search?q=precipitates" title=" precipitates"> precipitates</a> </p> <a href="https://publications.waset.org/abstracts/34561/microstructural-interactions-of-ag-and-sc-alloying-additions-during-casting-and-artificial-ageing-to-a-t6-temper-in-a-a356-aluminium-alloy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/34561.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">497</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> Economic Assessment Methodology to Support Decisions for Transport Infrastructure Development</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou </a> </p> <p class="card-text"><strong>Abstract:</strong></p> The decades after the end of the second War provide evidence that infrastructures investments contibute to economic development, on terms of productivity and income growth. In order to force productivity and increase competitiveness the financing of large transport infrastructure projects are on the top of the agenda in strategic planning process. Such a decision may take form some days to some decades and stakeholders as well as decision makers need tools in order to estimate the economic impact on natioanl economy of such an investment. The key question in such decisions is if the effects caused by the new infrastructure could be able to boost economic development on one hand, and create new jobs and activities on the other. This paper deals with the review of estimation of the mega transport infrastructure projects economic effects in economy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=economic%20impact" title="economic impact">economic impact</a>, <a href="https://publications.waset.org/abstracts/search?q=transport%20infrastructure" title=" transport infrastructure"> transport infrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=strategic%20planning" title=" strategic planning"> strategic planning</a>, <a href="https://publications.waset.org/abstracts/search?q=decision%20making" title=" decision making"> decision making</a> </p> <a href="https://publications.waset.org/abstracts/71631/economic-assessment-methodology-to-support-decisions-for-transport-infrastructure-development" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71631.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">290</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> The Τraits Τhat Facilitate Successful Student Performance in Distance Education: The Case of the Distance Education Unit at European University Cyprus</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Vlachopoulos">Dimitrios Vlachopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Tsokkas"> George Tsokkas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although it is not intended to identify distance education students as a homogeneous group, recent research has demonstrated that there are some demographic and personality common traits among most of them that provide the basis for the description of a typical distance learning student. The purpose of this paper is to describe these common traits and to facilitate their learning journey within a distance education program. The described research is an initiative of the Distance Education Unit at the European University Cyprus (Laureate International Universities) in the context of its action for the improvement of the students’ performance. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=distance%20education%20students" title="distance education students">distance education students</a>, <a href="https://publications.waset.org/abstracts/search?q=successful%20student%20performance" title=" successful student performance"> successful student performance</a>, <a href="https://publications.waset.org/abstracts/search?q=European%20University%20Cyprus" title=" European University Cyprus"> European University Cyprus</a>, <a href="https://publications.waset.org/abstracts/search?q=common%20traits" title=" common traits"> common traits</a> </p> <a href="https://publications.waset.org/abstracts/21141/the-traits-that-facilitate-successful-student-performance-in-distance-education-the-case-of-the-distance-education-unit-at-european-university-cyprus" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/21141.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">486</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Social Dimension of Air Transport Sustainable Development</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20F.%20Sartzetaki"> Maria F. Sartzetaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Air Transport links markets and individuals, making regions more competitive and promoting social and economic development. The assessment of social contribution is the key objective of this paper, focusing on the definition of the components of social dimension and welfare metrics in the national scale. According to a top-down approach, the key dimensions that affect the social welfare are presented. Conventional wisdom is to provide estimations on added value to social issues caused by the air transport development and present the methodology framework for measuring the contribution of transport development in social value chain. Greece is the case study of this paper, providing results from the contribution of air transport infrastructures in national welfare. The application key findings are essential for managers and decision makers to support actions and plans towards economic recovery of an economy presenting strong seasonal characteristics (because of tourism) and suffering from recession. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=air%20transport" title="air transport">air transport</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20coherence" title=" social coherence"> social coherence</a>, <a href="https://publications.waset.org/abstracts/search?q=resilient%20business%20development" title=" resilient business development"> resilient business development</a>, <a href="https://publications.waset.org/abstracts/search?q=socioeconomic%20impact" title=" socioeconomic impact"> socioeconomic impact</a> </p> <a href="https://publications.waset.org/abstracts/91161/social-dimension-of-air-transport-sustainable-development" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/91161.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">221</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Automated 3D Segmentation System for Detecting Tumor and Its Heterogeneity in Patients with High Grade Ovarian Epithelial Cancer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Binas">Dimitrios Binas</a>, <a href="https://publications.waset.org/abstracts/search?q=Marianna%20Konidari"> Marianna Konidari</a>, <a href="https://publications.waset.org/abstracts/search?q=Charis%20Bourgioti"> Charis Bourgioti</a>, <a href="https://publications.waset.org/abstracts/search?q=Lia%20Angela%20Moulopoulou"> Lia Angela Moulopoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Theodore%20Economopoulos"> Theodore Economopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Matsopoulos"> George Matsopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High grade ovarian epithelial cancer (OEC) is fatal gynecological cancer and the poor prognosis of this entity is closely related to considerable intratumoral genetic heterogeneity. By examining imaging data, it is possible to assess the heterogeneity of tumorous tissue. This study proposes a methodology for aligning, segmenting and finally visualizing information from various magnetic resonance imaging series in order to construct 3D models of heterogeneity maps from the same tumor in OEC patients. The proposed system may be used as an adjunct digital tool by health professionals for personalized medicine, as it allows for an easy visual assessment of the heterogeneity of the examined tumor. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=image%20segmentation" title="image segmentation">image segmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=ovarian%20epithelial%20cancer" title=" ovarian epithelial cancer"> ovarian epithelial cancer</a>, <a href="https://publications.waset.org/abstracts/search?q=quantitative%20characteristics" title=" quantitative characteristics"> quantitative characteristics</a>, <a href="https://publications.waset.org/abstracts/search?q=image%20registration" title=" image registration"> image registration</a>, <a href="https://publications.waset.org/abstracts/search?q=tumor%20visualization" title=" tumor visualization"> tumor visualization</a> </p> <a href="https://publications.waset.org/abstracts/139039/automated-3d-segmentation-system-for-detecting-tumor-and-its-heterogeneity-in-patients-with-high-grade-ovarian-epithelial-cancer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/139039.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Gravitationally Confined Relativistic Neutrinos and Mathematical Modeling of the Structure of Pions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Constantinos%20Vayenas">Constantinos Vayenas</a>, <a href="https://publications.waset.org/abstracts/search?q=Athanasios%20Fokas"> Athanasios Fokas</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Grigoriou"> Dimitrios Grigoriou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We use special relativity to compute the inertial and thus gravitational mass of relativistic electron and muon neutrinos, and we find that, for neutrino kinetic energies above 150 MeV/c2, these masses are in the Planck mass range. Consequently, we develop a simple Bohr-type model using gravitational rather than electrostatic forces between the rotating neutrinos as the centripetal force in order to examine the bound rotational states formed by two or three such relativistic neutrinos. We find that the masses of the composite rotational structures formed, are in the meson and baryon mass ranges, respectively. These models contain no adjustable parameters and by comparing their predictions with the experimental values of the masses of protons and pions, we compute a mass of 0.0437 eV/c2 for the heaviest electron neutrino mass and of 1.1 x10-3 eV/c2 for the heaviest muon neutrino mass. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=geons" title="geons">geons</a>, <a href="https://publications.waset.org/abstracts/search?q=gravitational%20confinement" title=" gravitational confinement"> gravitational confinement</a>, <a href="https://publications.waset.org/abstracts/search?q=neutrino%20masses" title=" neutrino masses"> neutrino masses</a>, <a href="https://publications.waset.org/abstracts/search?q=special%20relativity" title=" special relativity"> special relativity</a> </p> <a href="https://publications.waset.org/abstracts/67291/gravitationally-confined-relativistic-neutrinos-and-mathematical-modeling-of-the-structure-of-pions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/67291.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">263</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> Structural Identification for Layered Composite Structures through a Wave and Finite Element Methodology</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rilwan%20Kayode%20Apalowo">Rilwan Kayode Apalowo</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Chronopoulos"> Dimitrios Chronopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> An approach for identifying the geometric and material characteristics of layered composite structures through an inverse wave and finite element methodology is proposed. These characteristics are obtained through multi-frequency single shot measurements. However, it is established that the frequency regime of the measurements does not matter, meaning that both ultrasonic and structural dynamics frequency spectra can be employed. Taking advantage of a full FE (finite elements) description of the periodic composite, the scheme is able to account for arbitrarily complex structures. In order to demonstrate the robustness of the presented scheme, it is applied to a sandwich composite panel and results are compared with that of experimental characterization techniques. Excellent agreement is obtained with the experimental measurements. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=structural%20identification" title="structural identification">structural identification</a>, <a href="https://publications.waset.org/abstracts/search?q=non-destructive%20evaluation" title=" non-destructive evaluation"> non-destructive evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=finite%20elements" title=" finite elements"> finite elements</a>, <a href="https://publications.waset.org/abstracts/search?q=wave%20propagation" title=" wave propagation"> wave propagation</a>, <a href="https://publications.waset.org/abstracts/search?q=layered%20structures" title=" layered structures"> layered structures</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound" title=" ultrasound"> ultrasound</a> </p> <a href="https://publications.waset.org/abstracts/109615/structural-identification-for-layered-composite-structures-through-a-wave-and-finite-element-methodology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/109615.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> The Landscape of Multilingualism in the Urban Community of Limassol</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antigoni%20Parmaxi">Antigoni Parmaxi</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Nicolaou"> Anna Nicolaou</a>, <a href="https://publications.waset.org/abstracts/search?q=Salomi%20Papadima-Sophocleous"> Salomi Papadima-Sophocleous</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Boglou"> Dimitrios Boglou </a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study provides an overview of the socio linguistic situation of an under-researched city, Limassol, Cyprus, with regard to multilingualism and plurilingualism. More specifically, it explores issues pertaining to multilingualism and plurilingualism in education, the public sphere, economic life, the private sphere, and urban spaces. Through an examination of Limassol’s history of language diversity, as well as through an analysis of the city from a contemporary point of view, the study attempts to portray the multilingual Limassol of yesterday and of today. Findings demonstrate several aspects of multilingualism, such as how communication is achieved among the citizens, how the city encourages multilingualism, as well as what policies and practices are implemented in the various spheres in order to promote intercultural dialogue and mutual understanding. As a result of the findings, suggestions for best practices, introduction or improvement of policies and visions of the city are put forward. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=language%20diversity" title="language diversity">language diversity</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20inclusion" title=" social inclusion"> social inclusion</a>, <a href="https://publications.waset.org/abstracts/search?q=multilingualism" title=" multilingualism"> multilingualism</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20visibility" title=" language visibility"> language visibility</a>, <a href="https://publications.waset.org/abstracts/search?q=language%20policy" title=" language policy "> language policy </a> </p> <a href="https://publications.waset.org/abstracts/28818/the-landscape-of-multilingualism-in-the-urban-community-of-limassol" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28818.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">471</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">50</span> Deterministic Modelling to Estimate Economic Impact from Implementation and Management of Large Infrastructure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou </a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is widely recognised that the assets portfolio development is helping to enhance economic growth, productivity and competitiveness. While numerous studies and reports certify the positive effect of investments in large infrastructure investments on the local economy, still, the methodology to estimate the contribution in economic development is a challenging issue for researchers and economists. The key question is how to estimate those economic impacts in each economic system. This paper provides a compact and applicable methodological framework providing quantitative results in terms of the overall jobs and income generated into the project life cycle. According to a deterministic mathematical approach, the key variables and the modelling framework are presented. The numerical case study highlights key results for a new motorway project in Greece, which is experienced economic stress for many years, providing the opportunity for comparisons with similar cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=quantitative%20modelling" title="quantitative modelling">quantitative modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20impact" title=" economic impact"> economic impact</a>, <a href="https://publications.waset.org/abstracts/search?q=large%20transport%20infrastructure" title=" large transport infrastructure"> large transport infrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20assessment" title=" economic assessment"> economic assessment</a> </p> <a href="https://publications.waset.org/abstracts/80752/deterministic-modelling-to-estimate-economic-impact-from-implementation-and-management-of-large-infrastructure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80752.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">203</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> Impacts on Regional Economy by the Upgrade of Railway Infrastructure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20F.%20Sartzetaki"> Maria F. Sartzetaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transport is often the key driver for growth, especially for regions providing key opportunities for connectivity between busy areas and mature markets. Even though the benefits of transports are essential, limited research is published regarding the linkage of inland transport systems and other business sectors, the spillover effects on regional economy and the overall contribution to regional development. This paper deals with the determination of the key socioeconomic benefits on regions caused by the upgrade and the modernization of a railway corridor. The analysis framework is following a four-step analysis, providing key messages to planners, managers and decision makers. The provided case study is the upgrade of the railway corridor in North Greece, which is a very sensitive region suffering long time from economic stress. The application results are essential for comparisons with other destinations and provide key messages regarding the relationship of railway and economic development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=regional%20development" title="regional development">regional development</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20impact%20assessment%20variables" title=" economic impact assessment variables"> economic impact assessment variables</a>, <a href="https://publications.waset.org/abstracts/search?q=railway%20infrastructure" title=" railway infrastructure"> railway infrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=strategic%20planning" title=" strategic planning"> strategic planning</a> </p> <a href="https://publications.waset.org/abstracts/57171/impacts-on-regional-economy-by-the-upgrade-of-railway-infrastructure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/57171.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">309</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> Urban Growth Prediction Using Artificial Neural Networks in Athens, Greece </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Triantakonstantis">Dimitrios Triantakonstantis</a>, <a href="https://publications.waset.org/abstracts/search?q=Demetris%20Stathakis"> Demetris Stathakis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Urban areas have been expanded throughout the globe. Monitoring and modeling urban growth have become a necessity for a sustainable urban planning and decision making. Urban prediction models are important tools for analyzing the causes and consequences of urban land use dynamics. The objective of this research paper is to analyze and model the urban change, which has been occurred from 1990 to 2000 using CORINE land cover maps. The model was developed using drivers of urban changes (such as road distance, slope, etc.) under an Artificial Neural Network modeling approach. Validation was achieved using a prediction map for 2006 which was compared with a real map of Urban Atlas of 2006. The accuracy produced a Kappa index of agreement of 0,639 and a value of Cramer's V of 0,648. These encouraging results indicate the importance of the developed urban growth prediction model which using a set of available common biophysical drivers could serve as a management tool for the assessment of urban change. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=artificial%20neural%20networks" title="artificial neural networks">artificial neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=CORINE" title=" CORINE"> CORINE</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20atlas" title=" urban atlas"> urban atlas</a>, <a href="https://publications.waset.org/abstracts/search?q=urban%20growth%20prediction" title=" urban growth prediction"> urban growth prediction</a> </p> <a href="https://publications.waset.org/abstracts/24994/urban-growth-prediction-using-artificial-neural-networks-in-athens-greece" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/24994.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">528</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> Real-Time Episodic Memory Construction for Optimal Action Selection in Cognitive Robotics</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Deon%20de%20Jager">Deon de Jager</a>, <a href="https://publications.waset.org/abstracts/search?q=Yahya%20Zweiri"> Yahya Zweiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Makris"> Dimitrios Makris</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The three most important components in the cognitive architecture for cognitive robotics is memory representation, memory recall, and action-selection performed by the executive. In this paper, action selection, performed by the executive, is defined as a memory quantification and optimization process. The methodology describes the real-time construction of episodic memory through semantic memory optimization. The optimization is performed by set-based particle swarm optimization, using an adaptive entropy memory quantification approach for fitness evaluation. The performance of the approach is experimentally evaluated by simulation, where a UAV is tasked with the collection and delivery of a medical package. The experiments show that the UAV dynamically uses the episodic memory to autonomously control its velocity, while successfully completing its mission. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cognitive%20robotics" title="cognitive robotics">cognitive robotics</a>, <a href="https://publications.waset.org/abstracts/search?q=semantic%20memory" title=" semantic memory"> semantic memory</a>, <a href="https://publications.waset.org/abstracts/search?q=episodic%20memory" title=" episodic memory"> episodic memory</a>, <a href="https://publications.waset.org/abstracts/search?q=maximum%20entropy%20principle" title=" maximum entropy principle"> maximum entropy principle</a>, <a href="https://publications.waset.org/abstracts/search?q=particle%20swarm%20optimization" title=" particle swarm optimization"> particle swarm optimization</a> </p> <a href="https://publications.waset.org/abstracts/114710/real-time-episodic-memory-construction-for-optimal-action-selection-in-cognitive-robotics" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/114710.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">156</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Competitor Analysis to Quantify the Benefits and for Different Use of Transport Infrastructure</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20F.%20Sartzetaki"> Maria F. Sartzetaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Different transportation modes have key operational advantages and disadvantages, providing a variety of different transport options to users and passengers. This paper reviews key variables for the competition between air transport and other transport modes. The aim of this paper is to review the competition between air transport and other transport modes, providing results in terms of perceived cost for the users, for destinations high competitiveness for all transport modes. The competitor analysis variables include the cost and time outputs for each transport option, highlighting the level of competitiveness on high demanded Origin-Destination corridors. The case study presents the output of a such analysis for the OD corridor in Greece that connects the Capital city (Athens) with the second largest city (Thessaloniki) and the different transport modes have been considered (air, train, road). Conventional wisdom is to present an easy to handle tool for planners, managers and decision makers towards pricing policy effectiveness and demand attractiveness, appropriate to use for other similar cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=competitor%20analysis" title="competitor analysis">competitor analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=transport%20economics" title=" transport economics"> transport economics</a>, <a href="https://publications.waset.org/abstracts/search?q=transport%20generalized%20cost" title=" transport generalized cost"> transport generalized cost</a>, <a href="https://publications.waset.org/abstracts/search?q=quantitative%20modelling" title=" quantitative modelling"> quantitative modelling</a> </p> <a href="https://publications.waset.org/abstracts/80755/competitor-analysis-to-quantify-the-benefits-and-for-different-use-of-transport-infrastructure" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80755.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">247</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Experimental Investigation of Cold-Formed Steel-Timber Board Composite Floor Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Samar%20Raffoul">Samar Raffoul</a>, <a href="https://publications.waset.org/abstracts/search?q=Martin%20Heywood"> Martin Heywood</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Moutaftsis"> Dimitrios Moutaftsis</a>, <a href="https://publications.waset.org/abstracts/search?q=Michael%20Rowell"> Michael Rowell</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper comprises an experimental investigation into the structural performance of cold formed steel (CFS) and timber board composite floor systems. The tests include a series of small-scale pushout tests and full-scale bending tests carried out using a refined loading system to simulate uniformly distributed constant load. The influence of connection details (screw spacing and adhesives) on floor performance was investigated. The results are then compared to predictions from relevant existing models for composite floor systems. The results of this research demonstrate the significant benefits of considering the composite action of the boards in floor design. Depending on connection detail, an increase in flexural stiffness of up to 40% was observed in the floor system, when compared to designing joists individually. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cold%20formed%20steel%20joists" title="cold formed steel joists">cold formed steel joists</a>, <a href="https://publications.waset.org/abstracts/search?q=composite%20action" title=" composite action"> composite action</a>, <a href="https://publications.waset.org/abstracts/search?q=flooring%20systems" title=" flooring systems"> flooring systems</a>, <a href="https://publications.waset.org/abstracts/search?q=shear%20connection" title=" shear connection"> shear connection</a> </p> <a href="https://publications.waset.org/abstracts/103664/experimental-investigation-of-cold-formed-steel-timber-board-composite-floor-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/103664.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">129</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">44</span> Pregnancy Outcomes in Patients With Inflammatory Bowel Disease: Retrospective Data From a Greek National Registry</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Evgenia%20Papathanasiou">Evgenia Papathanasiou</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgios%20Kokkotis"> Georgios Kokkotis</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgios%20Axiaris"> Georgios Axiaris</a>, <a href="https://publications.waset.org/abstracts/search?q=Theodoros%20Argyropoulos"> Theodoros Argyropoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikos%20Viazis"> Nikos Viazis</a>, <a href="https://publications.waset.org/abstracts/search?q=Olga%20Giouleme"> Olga Giouleme</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantinos%20Gkoumas"> Konstantinos Gkoumas</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%91nthia%20Gatopoulou"> Αnthia Gatopoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%91ggelos%20Theodoulou"> Αggelos Theodoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgios%20Theocharis"> Georgios Theocharis</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%91ngeliki%20Theodoropoulou"> Αngeliki Theodoropoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Caria%20%CE%9Aalogirou"> Μaria Κalogirou</a>, <a href="https://publications.waset.org/abstracts/search?q=Pantelis%20Karatzas"> Pantelis Karatzas</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Aonstantinos%20%CE%9Aatsanos"> Κonstantinos Κatsanos</a>, <a href="https://publications.waset.org/abstracts/search?q=Theodora%20Kafetzi"> Theodora Kafetzi</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Aonstantinos%20%CE%9Aarmiris"> Κonstantinos Κarmiris</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%91nastasia%20%CE%9Aourikou"> Αnastasia Κourikou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%99oannis%20E%20%CE%9Aoutroubakis"> Ιoannis E Κoutroubakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Liatsos"> Christos Liatsos</a>, <a href="https://publications.waset.org/abstracts/search?q=Gerassimos%20J.%20Mantzaris"> Gerassimos J. Mantzaris</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Dicoletta%20%CE%9Cathou"> Νicoletta Μathou</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgia%20Bellou"> Georgia Bellou</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Michalopoulos%20%CE%91ikaterini%20%CE%9Cantaka"> George Michalopoulos Αikaterini Μantaka</a>, <a href="https://publications.waset.org/abstracts/search?q=Penelope%20Nikolaou"> Penelope Nikolaou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Cichael%20Oikonomou"> Μichael Oikonomou</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Polymeros"> Dimitrios Polymeros</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Papatheodoridis"> George Papatheodoridis</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%95vdoxia%20Stergiou"> Εvdoxia Stergiou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Aonstantinos%20Soufleris"> Κonstantinos Soufleris</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%95pameinondas%20Skouloudis"> Εpameinondas Skouloudis</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%9Caria%20Tzouvala"> Μaria Tzouvala</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgia%20Tsiolakidou"> Georgia Tsiolakidou</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%95ftychia%20Tsironi"> Εftychia Tsironi</a>, <a href="https://publications.waset.org/abstracts/search?q=Styliani%20Tsafaraki"> Styliani Tsafaraki</a>, <a href="https://publications.waset.org/abstracts/search?q=Kalliopi%20Foteinogiannopoulou"> Kalliopi Foteinogiannopoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantina%20Chalakatevaki"> Konstantina Chalakatevaki</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%91ngeliki%20Christidou"> Αngeliki Christidou</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20K.%20Christodoulou"> Dimitrios K. Christodoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Giorgos%20Bamias"> Giorgos Bamias</a>, <a href="https://publications.waset.org/abstracts/search?q=Spyridon%20Michopoulos"> Spyridon Michopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=%CE%95vanthia%20Zampeli"> Εvanthia Zampeli</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Background: Inflammatory bowel disease (IBD) commonly affects female patients of reproductive age, making the interaction between fertility, pregnancy and IBD an important issue in disease management. The effect of disease activity on the outcome of pregnancy and its impact on neonatal growth is a field of intense research. Close follow-up of pregnant IBD patients by a multidisciplinary team improves maternal and neonatal outcomes. Aim – Methods: Α national retrospective study of pregnancies in women with IBD between 2010-2020 was carried out in 22 IBD reference centers in Greece. Patient characteristics such as disease profile, type of treatment, and disease activity during gestation were analyzed in correlation to the method of delivery, pregnancy outcomes, as well as breastfeeding and offspring health. Results: Two-hundred and twenty-three pregnancies in 175 IBD patients were registered in the study. 122 with Crohn’s disease (CD). Median age during diagnosis was 25.6 years (12-44), with median disease duration of 7.4 years (0-23). One-hundred and twenty-nine patients (58%) were recorded during their first pregnancy. Early pregnancy termination was reported by 48 patients (22%). Pregnancy as a result of in vitro fertilization (IVF) occurred in 15 cases (6.7%). At the beginning of gestation, 165 patients (74%) were under treatment: 48 with anti-TNF agents (29%), 43 with azathioprine (26%), 101 with 5-aminosalicylic acid formulations (61%) and 12 with steroids (7%). We recorded 49 cases of IBD flares (22%) during pregnancy. Two-thirds of them (n=30) were in remission at the onset of the pregnancy. Almost half of them (n=22) required corticosteroid treatment. Patients with ulcerative colitis (UC) were in greater risk of disease flare during pregnancy (p<0.001). All but 3 pregnancies (99.1%) resulted in uncomplicated delivery. In 147 cases (67.1%), cesarean delivery was performed. Two late fetal deaths (0.9%) were reported, both in patients with continuously active disease since the beginning of pregnancy. After delivery, 75 patients (34%) presented with a disease flare, which was associated with active disease at the beginning of pregnancy (p <0.001). Conclusion: The majority of female, Greek IBD patients, had a favorable pregnancy outcome. Active inflammation during gestation and UC diagnosis were associated with a negative impact on pregnancy outcomes. The results of this study are in favor of the continuation of IBD treatment during pregnancy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=pregnancy" title="pregnancy">pregnancy</a>, <a href="https://publications.waset.org/abstracts/search?q=ulcerative%20colitis" title=" ulcerative colitis"> ulcerative colitis</a>, <a href="https://publications.waset.org/abstracts/search?q=Crohn%20disease" title=" Crohn disease"> Crohn disease</a>, <a href="https://publications.waset.org/abstracts/search?q=flare" title=" flare"> flare</a> </p> <a href="https://publications.waset.org/abstracts/166205/pregnancy-outcomes-in-patients-with-inflammatory-bowel-disease-retrospective-data-from-a-greek-national-registry" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166205.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">87</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Evaluation Framework for Investments in Rail Infrastructure Projects</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20F.%20Sartzetaki"> Maria F. Sartzetaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transport infrastructures are high-cost, long-term investments that serve as vital foundations for the operation of a region or nation and are essential to a country’s or business’s economic development and prosperity, by improving well-being and generating jobs and income. The development of appropriate financing options is of key importance in the decision making process in order develop viable transport infrastructures. The development of transport infrastructure has increasingly been shifting toward alternative methods of project financing such as Public Private Partnership (PPPs) and hybrid forms. In this paper, a methodological decision-making framework based on the evaluation of the financial viability of transportation infrastructure for different financial schemes is presented. The framework leads to an assessment of the financial viability which can be achieved by performing various financing scenarios analyses. To illustrate the application of the proposed methodology, a case study of rail transport infrastructure financing scenario analysis in Greece is developed. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rail%20transport%20infrastructure" title="rail transport infrastructure">rail transport infrastructure</a>, <a href="https://publications.waset.org/abstracts/search?q=financial%20viability" title=" financial viability"> financial viability</a>, <a href="https://publications.waset.org/abstracts/search?q=scenario%20analysis" title=" scenario analysis"> scenario analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=rail%20project%20feasibility" title=" rail project feasibility"> rail project feasibility</a> </p> <a href="https://publications.waset.org/abstracts/71639/evaluation-framework-for-investments-in-rail-infrastructure-projects" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/71639.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">278</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">42</span> Comparison of Transparent Nickel Doped Cobalt Sulfide and Platinum Counter Electrodes Used in Quasi-Solid State Dye Sensitized Solar Cells</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitra%20Sygkridou">Dimitra Sygkridou</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Karageorgopoulos"> Dimitrios Karageorgopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Elias%20Stathatos"> Elias Stathatos</a>, <a href="https://publications.waset.org/abstracts/search?q=Evangelos%20Vitoratos"> Evangelos Vitoratos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Transparent nickel doped cobalt sulfide was fabricated on a SnO2:F electrode and tested as an efficient electrocatalyst and as an alternative to the expensive platinum counter electrode. In order to investigate how this electrode could affect the electrical characteristics of a dye-sensitized solar cell, we manufactured cells with the same TiO2 photoanode sensitized with dye (N719) and employing the same quasi-solid electrolyte, altering only the counter electrode used. The cells were electrically and electrochemically characterized and it was observed that the ones with the Ni doped CoS2 outperformed the efficiency of the cells with the Pt counter electrode (3.76% and 3.44% respectively). Particularly, the higher efficiency of the cells with the Ni doped CoS2 counter electrode (CE) is mainly because of the enhanced photocurrent density which is attributed to the enhanced electrocatalytic ability of the CE and the low charge transfer resistance at the CE/electrolyte interface. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nickel%20doped%20cobalt%20sulfide" title="nickel doped cobalt sulfide">nickel doped cobalt sulfide</a>, <a href="https://publications.waset.org/abstracts/search?q=counter%20electrodes" title=" counter electrodes"> counter electrodes</a>, <a href="https://publications.waset.org/abstracts/search?q=dye-sensitized%20solar%20cells" title=" dye-sensitized solar cells"> dye-sensitized solar cells</a>, <a href="https://publications.waset.org/abstracts/search?q=quasi-solid%20state%20electrolyte" title=" quasi-solid state electrolyte"> quasi-solid state electrolyte</a>, <a href="https://publications.waset.org/abstracts/search?q=hybrid%20organic-inorganic%20materials" title=" hybrid organic-inorganic materials"> hybrid organic-inorganic materials</a> </p> <a href="https://publications.waset.org/abstracts/29157/comparison-of-transparent-nickel-doped-cobalt-sulfide-and-platinum-counter-electrodes-used-in-quasi-solid-state-dye-sensitized-solar-cells" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29157.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">759</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">41</span> Tapered Double Cantilever Beam: Evaluation of the Test Set-up for Self-Healing Polymers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eleni%20Tsangouri">Eleni Tsangouri</a>, <a href="https://publications.waset.org/abstracts/search?q=Xander%20Hillewaere"> Xander Hillewaere</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20Garoz%20G%C3%B3mez"> David Garoz Gómez</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Aggelis"> Dimitrios Aggelis</a>, <a href="https://publications.waset.org/abstracts/search?q=Filip%20Du%20Prez"> Filip Du Prez</a>, <a href="https://publications.waset.org/abstracts/search?q=Danny%20Van%20Hemelrijck"> Danny Van Hemelrijck</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Tapered Double Cantilever Beam (TDCB) is the most commonly used test set-up to evaluate the self-healing feature of thermoset polymers autonomously activated in the presence of crack. TDCB is a modification of the established fracture mechanics set-up of Double Cantilever Beam and is designed to provide constant strain energy release rate with crack length under stable load evolution (mode-I). In this study, the damage of virgin and autonomously healed TDCB polymer samples is evaluated considering the load-crack opening diagram, the strain maps provided by Digital Image Correlation technique and the fractography maps given by optical microscopy. It is shown that the pre-crack introduced prior to testing (razor blade tapping), the loading rate and the length of the side groove are the features that dominate the crack propagation and lead to inconstant fracture energy release rate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=polymers" title="polymers">polymers</a>, <a href="https://publications.waset.org/abstracts/search?q=autonomous%20healing" title=" autonomous healing"> autonomous healing</a>, <a href="https://publications.waset.org/abstracts/search?q=fracture" title=" fracture"> fracture</a>, <a href="https://publications.waset.org/abstracts/search?q=tapered%20double%20cantilever%20beam" title=" tapered double cantilever beam"> tapered double cantilever beam</a> </p> <a href="https://publications.waset.org/abstracts/62650/tapered-double-cantilever-beam-evaluation-of-the-test-set-up-for-self-healing-polymers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/62650.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">351</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">40</span> Management Directions towards Social Responsibility in Special Population Groups by Airport Enterprises: The Case of Autism </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20J.%20Dimitriou">Dimitrios J. Dimitriou</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20F.%20Sartzetaki"> Maria F. Sartzetaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Simoni%20K.%20Lintzerakou"> Simoni K. Lintzerakou </a> </p> <p class="card-text"><strong>Abstract:</strong></p> Air transport links markets and individuals, promoting social and economic development. The review of management direction towards social responsibility and especially for the enhancement of passengers with autism is the key objective of this paper. According to a top-down approach, the key dimensions that affect the basic principles and directions of airport enterprises management towards social responsibility for the case of passengers with autism are presented. Conventional wisdom is to present actions undertaken in improving accessibility for special population groups and highlight the social dimension in the management of transport hubs. The target is to focus on transport hubs serving special groups of passengers such as passengers with autism and highlight good practices and motivate transport infrastructure management authorities and decision makers to promote the social footprint of transport. The highlights and key findings are essential for managers and decision makers to support actions and plans towards management of airport enterprises towards social responsibility, focusing on the case of passengers traveling with Autism Spectrum Disorder (ASD). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=social%20responsibility" title="social responsibility">social responsibility</a>, <a href="https://publications.waset.org/abstracts/search?q=special%20groups" title=" special groups"> special groups</a>, <a href="https://publications.waset.org/abstracts/search?q=airport%20enterprises" title=" airport enterprises"> airport enterprises</a>, <a href="https://publications.waset.org/abstracts/search?q=AUTISM" title=" AUTISM "> AUTISM </a> </p> <a href="https://publications.waset.org/abstracts/104491/management-directions-towards-social-responsibility-in-special-population-groups-by-airport-enterprises-the-case-of-autism" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/104491.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">129</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">39</span> Geochemical and Mineralogical Characteristics of Soils in Areas Affected by the Fires of August 2021 at the Ilia Prefecture Greece</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dionisios%20Panagiotaras">Dionisios Panagiotaras</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavlos%20Avramidis"> Pavlos Avramidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Papoulis"> Dimitrios Papoulis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dionysios%20Koulougliotis"> Dionysios Koulougliotis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dionisis%20C.%20Christodoulopoulos"> Dionisis C. Christodoulopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitra%20Lekka"> Dimitra Lekka</a>, <a href="https://publications.waset.org/abstracts/search?q=Despoina%20Nifora"> Despoina Nifora</a>, <a href="https://publications.waset.org/abstracts/search?q=Denisa%20Drouvari"> Denisa Drouvari</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandra%20Skalioti"> Alexandra Skalioti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study delineates the geochemical and mineralogical characteristics of soils collected from woodland and forest areas affected by the fires of August 2021 at the Ilia prefecture, Greece. The mineralogical composition of the samples consists of quartz, calcite, albite, oligoclase, anorthite (feldspars), smectite, kaolinite and illite (clays). Quartz ranges from 38.21% to 57.49% with an average of 48.43%, calcite ranges from 2.55% to 25.09% with an average of 13.92%, feldspars ranges from 7.76% to 25.87% with an average of 17.02% and clays ranges from 4.39% to 43.43% with an average of 20.63%. Geochemical analyses of the soil samples applied for total organic carbon (TOC), total nitrogen (TN), total phosphorous (TP), Cu, Zn, Mn and Fe. Statistical analysis of the data shows a positive correlation between clays and Zn, Mn, Fe. TOC and TN show a strong positive correlation, while Fe shows a strong negative correlation with calcite. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=soils" title="soils">soils</a>, <a href="https://publications.waset.org/abstracts/search?q=geochemistry" title=" geochemistry"> geochemistry</a>, <a href="https://publications.waset.org/abstracts/search?q=mineralogy" title=" mineralogy"> mineralogy</a>, <a href="https://publications.waset.org/abstracts/search?q=woodland" title=" woodland"> woodland</a>, <a href="https://publications.waset.org/abstracts/search?q=forest" title=" forest"> forest</a> </p> <a href="https://publications.waset.org/abstracts/173706/geochemical-and-mineralogical-characteristics-of-soils-in-areas-affected-by-the-fires-of-august-2021-at-the-ilia-prefecture-greece" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/173706.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">95</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">38</span> Polarity Classification of Social Media Comments in Turkish </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Migena%20Ceyhan">Migena Ceyhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Zeynep%20Orhan"> Zeynep Orhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Karras"> Dimitrios Karras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> People in modern societies are continuously sharing their experiences, emotions, and thoughts in different areas of life. The information reaches almost everyone in real-time and can have an important impact in shaping people’s way of living. This phenomenon is very well recognized and advantageously used by the market representatives, trying to earn the most from this means. Given the abundance of information, people and organizations are looking for efficient tools that filter the countless data into important information, ready to analyze. This paper is a modest contribution in this field, describing the process of automatically classifying social media comments in the Turkish language into positive or negative. Once data is gathered and preprocessed, feature sets of selected single words or groups of words are build according to the characteristics of language used in the texts. These features are used later to train, and test a system according to different machine learning algorithms (Naïve Bayes, Sequential Minimal Optimization, J48, and Bayesian Linear Regression). The resultant high accuracies can be important feedback for decision-makers to improve the business strategies accordingly. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=feature%20selection" title="feature selection">feature selection</a>, <a href="https://publications.waset.org/abstracts/search?q=machine%20learning" title=" machine learning"> machine learning</a>, <a href="https://publications.waset.org/abstracts/search?q=natural%20language%20processing" title=" natural language processing"> natural language processing</a>, <a href="https://publications.waset.org/abstracts/search?q=sentiment%20analysis" title=" sentiment analysis"> sentiment analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20media%20reviews" title=" social media reviews"> social media reviews</a> </p> <a href="https://publications.waset.org/abstracts/129050/polarity-classification-of-social-media-comments-in-turkish" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129050.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">146</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">37</span> A Low-Cost Air Quality Monitoring Internet of Things Platform</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20Spandonidis">Christos Spandonidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Stefanos%20Tsantilas"> Stefanos Tsantilas</a>, <a href="https://publications.waset.org/abstracts/search?q=Elias%20Sedikos"> Elias Sedikos</a>, <a href="https://publications.waset.org/abstracts/search?q=Nektarios%20Galiatsatos"> Nektarios Galiatsatos</a>, <a href="https://publications.waset.org/abstracts/search?q=Fotios%20Giannopoulos"> Fotios Giannopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Papadopoulos"> Panagiotis Papadopoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolaos%20Demagos"> Nikolaos Demagos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Reppas"> Dimitrios Reppas</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Giordamlis"> Christos Giordamlis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present paper, a low cost, compact and modular Internet of Things (IoT) platform for air quality monitoring in urban areas is presented. This platform comprises of dedicated low cost, low power hardware and the associated embedded software that enable measurement of particles (PM2.5 and PM10), NO, CO, CO<sub>2</sub> and O<sub>3</sub> concentration in the air, along with relative temperature and humidity. This integrated platform acts as part of a greater air pollution data collecting wireless network that is able to monitor the air quality in various regions and neighborhoods of an urban area, by providing sensor measurements at a high rate that reaches up to one sample per second. It is therefore suitable for Big Data analysis applications such as air quality forecasts, weather forecasts and traffic prediction. The first real world test for the developed platform took place in Thessaloniki, Greece, where 16 devices were installed in various buildings in the city. In the near future, many more of these devices are going to be installed in the greater Thessaloniki area, giving a detailed air quality map of the city. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=distributed%20sensor%20system" title="distributed sensor system">distributed sensor system</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20monitoring" title=" environmental monitoring"> environmental monitoring</a>, <a href="https://publications.waset.org/abstracts/search?q=Internet%20of%20Things" title=" Internet of Things"> Internet of Things</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20cities" title=" smart cities"> smart cities</a> </p> <a href="https://publications.waset.org/abstracts/129799/a-low-cost-air-quality-monitoring-internet-of-things-platform" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/129799.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">146</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Dimitrios%20Tzovaras&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" class="pt-3 pb-2"> <div class="container"> <div style="background-color:#f5f5f5;" class="p-3"> <div class="row"> <div class="col-md-2"> <ul 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