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Sougles</title> <meta name="description" content="Search results for: Christos Sougles"> <meta name="keywords" content="Christos Sougles"> <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="Christos Sougles"> <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> 45</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Christos Sougles</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</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">44</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> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">43</span> Investigation of the Mechanical Performance of Carbon Nanomembranes for Water Separation Technologies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marinos%20Dimitropoulos">Marinos Dimitropoulos</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20Trakakis"> George Trakakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolaus%20Meyerbr%C3%B6ker"> Nikolaus Meyerbröker</a>, <a href="https://publications.waset.org/abstracts/search?q=Raphael%20Dalpke"> Raphael Dalpke</a>, <a href="https://publications.waset.org/abstracts/search?q=Polina%20Angelova"> Polina Angelova</a>, <a href="https://publications.waset.org/abstracts/search?q=Albert%20Schnieders"> Albert Schnieders</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Pavlou"> Christos Pavlou</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Kostaras"> Christos Kostaras</a>, <a href="https://publications.waset.org/abstracts/search?q=Costas%20Galiotis"> Costas Galiotis</a>, <a href="https://publications.waset.org/abstracts/search?q=Konstantinos%20Dassios"> Konstantinos Dassios</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Intended for purifying water, water separation technologies are widely employed in a variety of contemporary household and industrial applications. Ultrathin Carbon Nanomembranes (CNMs) offer a highly selective, fast-flow, energy-efficient water separation technology intended for demanding water treatment applications as a technological replacement for biological filtration membranes. The membranes are two-dimensional (2D) materials with sub-nm functional pores and a thickness of roughly 1 nm; they may be generated in large quantities on porous supporting substrates and have customizable properties. The purpose of this work was to investigate and analyze the mechanical characteristics of CNMs and their substrates in order to ensure the structural stability of the membrane during operation. Contrary to macro-materials, it is difficult to measure the mechanical properties of membranes that are only a few nanometers thick. The membranes were supported on atomically flat substrates as well as suspended over patterned substrates, and their inherent mechanical properties were tested with atomic force microscopy. Quantitative experiments under nanomechanical loading, nanoindentation, and nano fatigue demonstrated the membranes' potential for usage in water separation applications. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=carbon%20nanomembranes" title="carbon nanomembranes">carbon nanomembranes</a>, <a href="https://publications.waset.org/abstracts/search?q=mechanical%20properties" title=" mechanical properties"> mechanical properties</a>, <a href="https://publications.waset.org/abstracts/search?q=AFM" title=" AFM"> AFM</a> </p> <a href="https://publications.waset.org/abstracts/165834/investigation-of-the-mechanical-performance-of-carbon-nanomembranes-for-water-separation-technologies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165834.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">85</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> 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">41</span> A Parallel Implementation of k-Means in MATLAB</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Dimitris%20Varsamis">Dimitris Varsamis</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Talagkozis"> Christos Talagkozis</a>, <a href="https://publications.waset.org/abstracts/search?q=Alkiviadis%20Tsimpiris"> Alkiviadis Tsimpiris</a>, <a href="https://publications.waset.org/abstracts/search?q=Paris%20Mastorocostas"> Paris Mastorocostas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this work is the parallel implementation of k-means in MATLAB, in order to reduce the execution time. Specifically, a new function in MATLAB for serial k-means algorithm is developed, which meets all the requirements for the conversion to a function in MATLAB with parallel computations. Additionally, two different variants for the definition of initial values are presented. In the sequel, the parallel approach is presented. Finally, the performance tests for the computation times respect to the numbers of features and classes are illustrated. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=K-means%20algorithm" title="K-means algorithm">K-means algorithm</a>, <a href="https://publications.waset.org/abstracts/search?q=clustering" title=" clustering"> clustering</a>, <a href="https://publications.waset.org/abstracts/search?q=parallel%20computations" title=" parallel computations"> parallel computations</a>, <a href="https://publications.waset.org/abstracts/search?q=Matlab" title=" Matlab"> Matlab</a> </p> <a href="https://publications.waset.org/abstracts/80503/a-parallel-implementation-of-k-means-in-matlab" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/80503.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">385</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> Destruction of Atherosclerotic Plaque Using Pulse Ultrasound with a Planar Rectangular Ultrasound Transducer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christakis%20Damianou">Christakis Damianou</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Christofi"> Christos Christofi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nicos%20Mylonas"> Nicos Mylonas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of the proposed study was to evaluate mechanical mode ultrasound using a flat rectangular (3x10 mm2) MRI compatible transducer operating at 5 MHz for destroying atherosclerotic plaque. The system was tested initially in a Hydroxyapatite-polyalactide (HA/PLA) model. An optimized protocol was decided and then applied in atherosclerotic plaque of a rabbit. The plaque in the rabbit was created using a high cholesterol diet. The atherosclerotic plaque was imaged using MRI. This study shows that the destruction of atherosclerotic plaque is feasible. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mri" title="mri">mri</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasound" title=" ultrasound"> ultrasound</a>, <a href="https://publications.waset.org/abstracts/search?q=atherosclerotic" title=" atherosclerotic"> atherosclerotic</a>, <a href="https://publications.waset.org/abstracts/search?q=plaque" title=" plaque"> plaque</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse" title=" pulse"> pulse</a> </p> <a href="https://publications.waset.org/abstracts/11014/destruction-of-atherosclerotic-plaque-using-pulse-ultrasound-with-a-planar-rectangular-ultrasound-transducer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11014.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">303</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> Capacity Optimization in Cooperative Cognitive Radio Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mahdi%20Pirmoradian">Mahdi Pirmoradian</a>, <a href="https://publications.waset.org/abstracts/search?q=Olayinka%20Adigun"> Olayinka Adigun</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Politis"> Christos Politis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Cooperative spectrum sensing is a crucial challenge in cognitive radio networks. Cooperative sensing can increase the reliability of spectrum hole detection, optimize sensing time and reduce delay in cooperative networks. In this paper, an efficient central capacity optimization algorithm is proposed to minimize cooperative sensing time in a homogenous sensor network using OR decision rule subject to the detection and false alarm probabilities constraints. The evaluation results reveal significant improvement in the sensing time and normalized capacity of the cognitive sensors. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooperative%20networks" title="cooperative networks">cooperative networks</a>, <a href="https://publications.waset.org/abstracts/search?q=normalized%20capacity" title=" normalized capacity"> normalized capacity</a>, <a href="https://publications.waset.org/abstracts/search?q=sensing%20time" title=" sensing time"> sensing time</a> </p> <a href="https://publications.waset.org/abstracts/25670/capacity-optimization-in-cooperative-cognitive-radio-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25670.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">633</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> A Conceptual Analysis of Teams’ Climate Role in the Intrapreneurial Process</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Georgia%20C.%20Kosta">Georgia C. Kosta</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20S.%20Nicolaidis"> Christos S. Nicolaidis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The present paper discusses the role of teams’ climate in the intrapreneurial process. Intrapreneurship, which corresponds for entrepreneurship in existing organizations, puts special emphasis on climate as an influential factor of the intrapreneurial behavior. Although climate exists at every level and in every subgroup of the organizational structure, research focuses mainly on the study of climate that characterizes organization as a whole. However, the climate of a work team may differ radically from the organizational climate, and in fact it can be far more influential. The paper provides a conceptual analysis of organizational climate from the intrapreneurial point of view, and sheds light upon teams’ climate role in the intrapreneurial posture. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=entrepreneurship" title="entrepreneurship">entrepreneurship</a>, <a href="https://publications.waset.org/abstracts/search?q=innovation" title=" innovation"> innovation</a>, <a href="https://publications.waset.org/abstracts/search?q=intrapreneurship" title=" intrapreneurship"> intrapreneurship</a>, <a href="https://publications.waset.org/abstracts/search?q=organizational%20climate" title=" organizational climate"> organizational climate</a>, <a href="https://publications.waset.org/abstracts/search?q=teams%E2%80%99%20climate" title=" teams’ climate"> teams’ climate</a> </p> <a href="https://publications.waset.org/abstracts/78834/a-conceptual-analysis-of-teams-climate-role-in-the-intrapreneurial-process" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/78834.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">282</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> Substrate Coupling in Millimeter Wave Frequencies</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vasileios%20Gerakis">Vasileios Gerakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Fontounasios%20Christos"> Fontounasios Christos</a>, <a href="https://publications.waset.org/abstracts/search?q=Alkis%20Hatzopoulos"> Alkis Hatzopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A study of the impact of metal guard rings on the coupling between two square metal pads is presented. The structure is designed over a bulk silicon substrate with epitaxial layer, so the coupling through the substrate is also involved. A lightly doped profile is adopted and is simulated by means of an electromagnetic simulator for various pad distances and different metal layers, assuming a 65 nm bulk CMOS technology. The impact of various guard ring design (geometrical) parameters is examined. Furthermore, the increase of isolation (resulting in reduction of the noise coupling) between the pads by cutting the ring, or by using multiple rings, is also analyzed. S parameters are used to compare the various structures. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=guard%20rings" title="guard rings">guard rings</a>, <a href="https://publications.waset.org/abstracts/search?q=metal%20pad%20coupling" title=" metal pad coupling"> metal pad coupling</a>, <a href="https://publications.waset.org/abstracts/search?q=millimeter%20wave%20frequencies" title=" millimeter wave frequencies"> millimeter wave frequencies</a>, <a href="https://publications.waset.org/abstracts/search?q=substrate%20noise" title=" substrate noise"> substrate noise</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a> </p> <a href="https://publications.waset.org/abstracts/26875/substrate-coupling-in-millimeter-wave-frequencies" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/26875.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">538</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">36</span> Detect QOS Attacks Using Machine Learning Algorithm</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christodoulou%20Christos">Christodoulou Christos</a>, <a href="https://publications.waset.org/abstracts/search?q=Politis%20Anastasios"> Politis Anastasios</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A large majority of users favoured to wireless LAN connection since it was so simple to use. A wireless network can be the target of numerous attacks. Class hijacking is a well-known attack that is fairly simple to execute and has significant repercussions on users. The statistical flow analysis based on machine learning (ML) techniques is a promising categorization methodology. In a given dataset, which in the context of this paper is a collection of components representing frames belonging to various flows, machine learning (ML) can offer a technique for identifying and characterizing structural patterns. It is possible to classify individual packets using these patterns. It is possible to identify fraudulent conduct, such as class hijacking, and take necessary action as a result. In this study, we explore a way to use machine learning approaches to thwart this attack. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=wireless%20lan" title="wireless lan">wireless lan</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20of%20service" title=" quality of service"> quality of service</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=class%20hijacking" title=" class hijacking"> class hijacking</a>, <a href="https://publications.waset.org/abstracts/search?q=EDCA%20remapping" title=" EDCA remapping"> EDCA remapping</a> </p> <a href="https://publications.waset.org/abstracts/184408/detect-qos-attacks-using-machine-learning-algorithm" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184408.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">61</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">35</span> The Efficiency of the Use of Medical Bilingual Dictionary in English Language Teaching in Vocational College</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zorana%20Jurinjak">Zorana Jurinjak</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Alexopoulos"> Christos Alexopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this paper is to examine the effectiveness of using a medical bilingual dictionary in teaching English in a vocational college. More precisely, to what extent the use of bilingual medical dictionary in relation to the use of Standard English bilingual dictionaries influences the results on tests, and thus the acquisition of better competence of students mastering the subject terminology. Secondary interest in this paper would be to raise awareness among students and teachers about the advantages of dictionary use. The experiment was conducted at College of Applied Health Sciences in Ćuprija on a sample of 90 students. The respondents translated three medical texts with 42 target terms. Statistical analyses of the data obtained show that the differences in average time and correct answers favor the students who used medical dictionary. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilingual%20medical%20dictionary" title="bilingual medical dictionary">bilingual medical dictionary</a>, <a href="https://publications.waset.org/abstracts/search?q=standard%20english%20bilingual%20dictionary" title=" standard english bilingual dictionary"> standard english bilingual dictionary</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20terminology" title=" medical terminology"> medical terminology</a>, <a href="https://publications.waset.org/abstracts/search?q=EOS" title=" EOS"> EOS</a>, <a href="https://publications.waset.org/abstracts/search?q=ESP" title=" ESP"> ESP</a> </p> <a href="https://publications.waset.org/abstracts/148251/the-efficiency-of-the-use-of-medical-bilingual-dictionary-in-english-language-teaching-in-vocational-college" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/148251.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">110</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">34</span> Feasibility Study for Removing Atherosclerotic Plaque Using the Thermal Effects of a Planar Rectangular High Intensity Ultrasound Transducer</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christakis%20Damianou">Christakis Damianou</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Christofi"> Christos Christofi</a>, <a href="https://publications.waset.org/abstracts/search?q=Nicos%20Mylonas"> Nicos Mylonas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this paper was to conduct a feasibility study using a flat rectangular (3x10 mm2) MRI compatible transducer operating at 5 MHz for destroying atherosclerotic plaque using the thermal effects of ultrasound in in vitro models. A parametric study was performed where the time needed to ablate the plaque was studied as a function of Spatial Average Temporal Average (SATA) intensity, and pulse duration. The time needed to ablate plaque is directly related to intensity, and pulse duration. The temperature measured close to the artery is above safe limits and therefore thermal ultrasound does not have a place in removing plaques in arteries. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ultrasound" title="ultrasound">ultrasound</a>, <a href="https://publications.waset.org/abstracts/search?q=atherosclerotic" title=" atherosclerotic"> atherosclerotic</a>, <a href="https://publications.waset.org/abstracts/search?q=plaque" title=" plaque"> plaque</a>, <a href="https://publications.waset.org/abstracts/search?q=pulse" title=" pulse"> pulse</a> </p> <a href="https://publications.waset.org/abstracts/2442/feasibility-study-for-removing-atherosclerotic-plaque-using-the-thermal-effects-of-a-planar-rectangular-high-intensity-ultrasound-transducer" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/2442.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">293</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">33</span> Dark Tourism and Local Development. Creating a Dark Urban Route</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20N.%20Tsironis">Christos N. Tsironis</a>, <a href="https://publications.waset.org/abstracts/search?q=Loanna%20Mitaftsi"> Loanna Mitaftsi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Currently, the various forms of tours and touristic visits to destinations associated with the “dark” facets of the past constitute one of the most dynamic fields of touristic initiatives and economic development. This analysis focuses on the potential development of urban dark routes. It aims a) to shed light to touristic, social, and ethical considerations and to describe some of the trends and links combining heritage and dark tourism in post-pandemic societies and b) to explore the possibilities of developing a new and polymorphic form of dark tourism in Thessaloniki, Greece, a distinctive heritage destination. The analysis concludes with a detailed dark route designed to serve a new, polymorphic and sustainable touristic product that describes a dark past with places, sights, and monuments and narrates stories and events stigmatized by death, disaster, and violence throughout the city’s history. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=dark%20tourism" title="dark tourism">dark tourism</a>, <a href="https://publications.waset.org/abstracts/search?q=dark%20urban%20route" title=" dark urban route"> dark urban route</a>, <a href="https://publications.waset.org/abstracts/search?q=local%20development" title=" local development"> local development</a>, <a href="https://publications.waset.org/abstracts/search?q=polymorphic%20tourism" title=" polymorphic tourism"> polymorphic tourism</a> </p> <a href="https://publications.waset.org/abstracts/139755/dark-tourism-and-local-development-creating-a-dark-urban-route" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/139755.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">213</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">32</span> Determining the Target Level of Knowledge of English as a Foreign Language in Higher Education</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Zorana%20Z.%20Jurinjak">Zorana Z. Jurinjak</a>, <a href="https://publications.waset.org/abstracts/search?q=Nata%C5%A1a%20B.%20Luki%C4%87"> Nataša B. Lukić</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20G.%20Alexopoulos"> Christos G. Alexopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Although in the last few decades, English as a foreign language has been a compulsory subject in almost all colleges and universities in Serbia, students who enter the first year come with different levels of knowledge, which is immense task and a burden on teachers not only which literature and how to conduct classes in heterogeneous groups but also how to evaluate and assess the progress.This paper aims to discuss the issue of determining the target level of knowledge of English as a foreign language in higher education in Serbia due to the great need for these levels to equalize. The research was conducted at several colleges and universities where first-year students took a placement test, and we also carried out a review and comparison of the literature used in teaching English in those schools. We hope that this research will not only raise the awareness of those in charge when making curriculums, but also that ways will be found to assimilate these differences in knowledge and establish the criteria in assessment. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=higher%20education" title="higher education">higher education</a>, <a href="https://publications.waset.org/abstracts/search?q=EFL" title=" EFL"> EFL</a>, <a href="https://publications.waset.org/abstracts/search?q=levels%20of%20knowledge" title=" levels of knowledge"> levels of knowledge</a>, <a href="https://publications.waset.org/abstracts/search?q=evaluation" title=" evaluation"> evaluation</a>, <a href="https://publications.waset.org/abstracts/search?q=assessment" title=" assessment"> assessment</a> </p> <a href="https://publications.waset.org/abstracts/193446/determining-the-target-level-of-knowledge-of-english-as-a-foreign-language-in-higher-education" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/193446.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">11</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">31</span> Improving the LDMOS Temperature Compensation Bias Circuit to Optimize Back-Off</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonis%20Constantinides">Antonis Constantinides</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Yiallouras"> Christos Yiallouras</a>, <a href="https://publications.waset.org/abstracts/search?q=Christakis%20Damianou"> Christakis Damianou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The application of today's semiconductor transistors in high power UHF DVB-T linear amplifiers has evolved significantly by utilizing LDMOS technology. This fact provides engineers with the option to design a single transistor signal amplifier which enables output power and linearity that was unobtainable previously using bipolar junction transistors or later type first generation MOSFETS. The quiescent current stability in terms of thermal variations of the LDMOS guarantees a robust operation in any topology of DVB-T signal amplifiers. Otherwise, progressively uncontrolled heat dissipation enhancement on the LDMOS case can degrade the amplifier’s crucial parameters in regards to the gain, linearity, and RF stability, resulting in dysfunctional operation or a total destruction of the unit. This paper presents one more sophisticated approach from the traditional biasing circuits used so far in LDMOS DVB-T amplifiers. It utilizes a microprocessor control technology, providing stability in topologies where IDQ must be perfectly accurate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=LDMOS" title="LDMOS">LDMOS</a>, <a href="https://publications.waset.org/abstracts/search?q=amplifier" title=" amplifier"> amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=back-off" title=" back-off"> back-off</a>, <a href="https://publications.waset.org/abstracts/search?q=bias%20circuit" title=" bias circuit"> bias circuit</a> </p> <a href="https://publications.waset.org/abstracts/11313/improving-the-ldmos-temperature-compensation-bias-circuit-to-optimize-back-off" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/11313.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">339</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">30</span> Development Strategies for Building Smart Cities: The Case of Kalampaka, Greece</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20Stamopoulos">Christos Stamopoulos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nowadays, the technological evolution has brought changes and new requirements not only on human’s life but also on the environment in which they live. Cities have begun to be organized in new ways which comply with contemporary living standards. The aim of this paper was to present the characteristics and to introduce good construction strategies of smart cities around the world. Also, a case study of the city of Kalampaka and its residents was surveyed. More specifically, residents’ knowledge about smart cities and their opinion for future progress was examined. Statistical analysis showed that residents’ knowledge about smart cities was fairly good (48% knew the phrase 'smart city'). However, respondents believe that the appearance of the city of Kalampaka needs improvement in many areas (the 75% are disappointed with the current appearance of the city). Furthermore, regression analysis showed that the value of the environmental sustainability is greatly influenced by the energy saving, as well as, innovation has an impact on the level of quality of life, while older people seem satisfied with administration’s efforts for development. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=development" title="development">development</a>, <a href="https://publications.waset.org/abstracts/search?q=economy" title=" economy"> economy</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=governance" title=" governance"> governance</a>, <a href="https://publications.waset.org/abstracts/search?q=quality%20of%20life" title=" quality of life"> quality of life</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20city" title=" smart city"> smart city</a> </p> <a href="https://publications.waset.org/abstracts/70253/development-strategies-for-building-smart-cities-the-case-of-kalampaka-greece" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/70253.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">336</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">29</span> A Novel Design in the Use of Planar Transformers for LDMOS Based Amplifiers in Bands II, III, DRM+, DVB-T and DAB+</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Antonis%20Constantinides">Antonis Constantinides</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Yiallouras"> Christos Yiallouras</a>, <a href="https://publications.waset.org/abstracts/search?q=Christakis%20Damianou"> Christakis Damianou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The coaxial transformer-coupled push-pull circuitry has been used widely in HF and VHF amplifiers for many decades without significant changes in the topology of the transformers. Basic changes over the years concerned the construction and turns ratio of the transformers as has been imposed upon the newer technologies active devices demands. The balun transmission line transformers applied in push-pull amplifiers enable input/output impedance transformation, but are mainly used to convert the balanced output into unbalanced and the input unbalanced into balanced. A simple and affordable alternative solution over the traditional coaxial transformer is the coreless planar balun. A key advantage over the traditional approach lies in the high specifications repeatability; simplifying the amplifier construction requirements as the planar balun constitutes an integrated part of the PCB copper layout. This paper presents the performance analysis of a planar LDMOS MRFE6VP5600 Push-Pull amplifier that enables robust operation in Band III, DVB-T, DVB-T2 standards but functions equally well in Band II, for DRM+ new generation transmitters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=amplifier" title="amplifier">amplifier</a>, <a href="https://publications.waset.org/abstracts/search?q=balun" title=" balun"> balun</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20impedance" title=" complex impedance"> complex impedance</a>, <a href="https://publications.waset.org/abstracts/search?q=LDMOS" title=" LDMOS"> LDMOS</a>, <a href="https://publications.waset.org/abstracts/search?q=planar-transformers" title=" planar-transformers"> planar-transformers</a> </p> <a href="https://publications.waset.org/abstracts/30154/a-novel-design-in-the-use-of-planar-transformers-for-ldmos-based-amplifiers-in-bands-ii-iii-drm-dvb-t-and-dab" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30154.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">440</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">28</span> An Optimized Method for 3D Magnetic Navigation of Nanoparticles inside Human Arteries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Evangelos%20G.%20Karvelas">Evangelos G. Karvelas</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Liosis"> Christos Liosis</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreas%20Theodorakakos"> Andreas Theodorakakos</a>, <a href="https://publications.waset.org/abstracts/search?q=Theodoros%20E.%20Karakasidis"> Theodoros E. Karakasidis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present work, a numerical method for the estimation of the appropriate gradient magnetic fields for optimum driving of the particles into the desired area inside the human body is presented. The proposed method combines Computational Fluid Dynamics (CFD), Discrete Element Method (DEM) and Covariance Matrix Adaptation (CMA) evolution strategy for the magnetic navigation of nanoparticles. It is based on an iteration procedure that intents to eliminate the deviation of the nanoparticles from a desired path. Hence, the gradient magnetic field is constantly adjusted in a suitable way so that the particles’ follow as close as possible to a desired trajectory. Using the proposed method, it is obvious that the diameter of particles is crucial parameter for an efficient navigation. In addition, increase of particles' diameter decreases their deviation from the desired path. Moreover, the navigation method can navigate nanoparticles into the desired areas with efficiency approximately 99%. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=computational%20fluid%20dynamics" title="computational fluid dynamics">computational fluid dynamics</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD" title=" CFD"> CFD</a>, <a href="https://publications.waset.org/abstracts/search?q=covariance%20matrix%20adaptation%20evolution%20strategy" title=" covariance matrix adaptation evolution strategy"> covariance matrix adaptation evolution strategy</a>, <a href="https://publications.waset.org/abstracts/search?q=discrete%20element%20method" title=" discrete element method"> discrete element method</a>, <a href="https://publications.waset.org/abstracts/search?q=DEM" title=" DEM"> DEM</a>, <a href="https://publications.waset.org/abstracts/search?q=magnetic%20navigation" title=" magnetic navigation"> magnetic navigation</a>, <a href="https://publications.waset.org/abstracts/search?q=spherical%20particles" title=" spherical particles"> spherical particles</a> </p> <a href="https://publications.waset.org/abstracts/131811/an-optimized-method-for-3d-magnetic-navigation-of-nanoparticles-inside-human-arteries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/131811.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">142</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">27</span> Enhancing Precision Agriculture through Object Detection Algorithms: A Study of YOLOv5 and YOLOv8 in Detecting Armillaria spp.</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20Chaschatzis">Christos Chaschatzis</a>, <a href="https://publications.waset.org/abstracts/search?q=Chrysoula%20Karaiskou"> Chrysoula Karaiskou</a>, <a href="https://publications.waset.org/abstracts/search?q=Pantelis%20Angelidis"> Pantelis Angelidis</a>, <a href="https://publications.waset.org/abstracts/search?q=Sotirios%20K.%20Goudos"> Sotirios K. Goudos</a>, <a href="https://publications.waset.org/abstracts/search?q=Igor%20Kotsiuba"> Igor Kotsiuba</a>, <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Sarigiannidis"> Panagiotis Sarigiannidis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the past few decades, the rapid growth of the global population has led to the need to increase agricultural production and improve the quality of agricultural goods. There is a growing focus on environmentally eco-friendly solutions, sustainable production, and biologically minimally fertilized products in contemporary society. Precision agriculture has the potential to incorporate a wide range of innovative solutions with the development of machine learning algorithms. YOLOv5 and YOLOv8 are two of the most advanced object detection algorithms capable of accurately recognizing objects in real time. Detecting tree diseases is crucial for improving the food production rate and ensuring sustainability. This research aims to evaluate the efficacy of YOLOv5 and YOLOv8 in detecting the symptoms of Armillaria spp. in sweet cherry trees and determining their health status, with the goal of enhancing the robustness of precision agriculture. Additionally, this study will explore Computer Vision (CV) techniques with machine learning algorithms to improve the detection process’s efficiency. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Armillaria%20spp." title="Armillaria spp.">Armillaria spp.</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=precision%20agriculture" title=" precision agriculture"> precision agriculture</a>, <a href="https://publications.waset.org/abstracts/search?q=smart%20farming" title=" smart farming"> smart farming</a>, <a href="https://publications.waset.org/abstracts/search?q=sweet%20cherries%20trees" title=" sweet cherries trees"> sweet cherries trees</a>, <a href="https://publications.waset.org/abstracts/search?q=YOLOv5" title=" YOLOv5"> YOLOv5</a>, <a href="https://publications.waset.org/abstracts/search?q=YOLOv8" title=" YOLOv8"> YOLOv8</a> </p> <a href="https://publications.waset.org/abstracts/162593/enhancing-precision-agriculture-through-object-detection-algorithms-a-study-of-yolov5-and-yolov8-in-detecting-armillaria-spp" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/162593.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">113</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">26</span> The Nexus between Wind Energy, Biodiversity Protection and Social Acceptance: Evidence of Good Practices from Greece, Latvia, and Poland</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20Bouras">Christos Bouras</a>, <a href="https://publications.waset.org/abstracts/search?q=Eirini%20Stergiou"> Eirini Stergiou</a>, <a href="https://publications.waset.org/abstracts/search?q=Charitini%20Karakostaki"> Charitini Karakostaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Vasileios%20Tzanos"> Vasileios Tzanos</a>, <a href="https://publications.waset.org/abstracts/search?q=Vasileios%20Kokkinos"> Vasileios Kokkinos</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Wind power represents a major pathway to curtailing greenhouse gas emissions and thus reducing the rate of climate change. A wind turbine runs practically emission-free for 20 years, representing one of the most environmentally sustainable sources of energy. Nevertheless, environmental and biodiversity concerns can often slow down or halt the deployment of wind farms due to local public opposition. This opposition is often fueled by poor relationships between wind energy stakeholders and civil society, which in many cases led to conflictual protests and property damage. In this context, addressing these concerns is essential in order to facilitate the proliferation of wind farms in Europe and the phase-out of fossil fuels from the energy mix. The aim of this study is to identify a number of good practices and cases to avoid increasing biodiversity protection at all stages of wind farms’ lifecycle in three participating countries, namely Greece, Latvia, and Poland. The results indicate that although available technological solutions are already being exploited worldwide, in these countries, there is still room for improvement. To address this gap, a set of policy recommendations is proposed to accomplish the wind energy targets in the near future while simultaneously mitigating the pertinent biodiversity risks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=biodiversity%20protection" title="biodiversity protection">biodiversity protection</a>, <a href="https://publications.waset.org/abstracts/search?q=environmental%20impact" title=" environmental impact"> environmental impact</a>, <a href="https://publications.waset.org/abstracts/search?q=social%20acceptance" title=" social acceptance"> social acceptance</a>, <a href="https://publications.waset.org/abstracts/search?q=wind%20energy" title=" wind energy"> wind energy</a> </p> <a href="https://publications.waset.org/abstracts/166833/the-nexus-between-wind-energy-biodiversity-protection-and-social-acceptance-evidence-of-good-practices-from-greece-latvia-and-poland" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166833.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">25</span> Leveraging Hyperledger Iroha for the Issuance and Verification of Higher-Education Certificates</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vasiliki%20Vlachou">Vasiliki Vlachou</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Kontzinos"> Christos Kontzinos</a>, <a href="https://publications.waset.org/abstracts/search?q=Ourania%20Markaki"> Ourania Markaki</a>, <a href="https://publications.waset.org/abstracts/search?q=Panagiotis%20Kokkinakos"> Panagiotis Kokkinakos</a>, <a href="https://publications.waset.org/abstracts/search?q=Vagelis%20Karakolis"> Vagelis Karakolis</a>, <a href="https://publications.waset.org/abstracts/search?q=John%20Psarras"> John Psarras</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Higher Education is resisting the pull of technology, especially as this concerns the issuance and verification of degrees and certificates. It is widely known that education certificates are largely produced in paper form making them vulnerable to damage while holders of such certificates are dependent on the universities and other issuing organisations. QualiChain is an EU Horizon 2020 (H2020) research project aiming to transform and revolutionise the domain of public education and its ties with the job market by leveraging blockchain, analytics and decision support to develop a platform for the verification and sharing of education certificates. Blockchain plays an integral part in the QualiChain solution in providing a trustworthy environment to store, share and manage such accreditations. Under the context of this paper, three prominent blockchain platforms (Ethereum, Hyperledger Fabric, Hyperledger Iroha) were considered as a means of experimentation for creating a system with the basic functionalities that will be needed for trustworthy degree verification. The methodology and respective system developed and presented in this paper used Hyperledger Iroha and proved that this specific platform can be used to easily develop decentralize applications. Future papers will attempt to further experiment with other blockchain platforms and assess which has the best potential. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=blockchain" title="blockchain">blockchain</a>, <a href="https://publications.waset.org/abstracts/search?q=degree%20verification" title=" degree verification"> degree verification</a>, <a href="https://publications.waset.org/abstracts/search?q=higher%20education%20certificates" title=" higher education certificates"> higher education certificates</a>, <a href="https://publications.waset.org/abstracts/search?q=Hyperledger%20Iroha" title=" Hyperledger Iroha"> Hyperledger Iroha</a> </p> <a href="https://publications.waset.org/abstracts/127503/leveraging-hyperledger-iroha-for-the-issuance-and-verification-of-higher-education-certificates" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/127503.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">141</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">24</span> Sustainable Supply Chain Management Practices, Challenges, and Opportunities: A Case Study of Small and Medium-Sized Enterprises Within the Oil and Gas Sector</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Igho%20Ekiugbo">Igho Ekiugbo</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Papanagnou"> Christos Papanagnou</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The energy sector continues to face increased scrutiny due to climate change challenges emanating from the burning of fossil fuels, such as coal, oil, and gas. These climate change challenges have motivated industry practitioners and researchers alike to gain an interest in the way businesses operate. This paper aimed to investigate and assess how small and medium-sized enterprises (SMEs) are reducing the impact of their operations, especially those within their supply chains, by assessing the sustainability practices they have adopted and implemented as well as the benefits and challenges of adopting such practices. Data will be collected from SMEs operating across the downstream oil and gas sector in Nigeria using questionnaire surveys. To analyse the data, confirmatory factor analysis and regression analysis will be performed. This method is deemed more suitable and appropriate for testing predefined measurements of sustainable supply chain practices as contained in the extant literature. Preliminary observations indicate a consensus on the awareness of the sustainability concept amongst the target participants. To the best of our knowledge, this paper is among the first to investigate the sustainability practices of SMEs operating in the Nigerian oil and gas sector and will therefore contribute to the sustainability and circular economic literature. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=small%20and%20medium-sized%20enterprises" title="small and medium-sized enterprises">small and medium-sized enterprises</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainability%20practices" title=" sustainability practices"> sustainability practices</a>, <a href="https://publications.waset.org/abstracts/search?q=supply%20chains" title=" supply chains"> supply chains</a>, <a href="https://publications.waset.org/abstracts/search?q=sustainable%20supply%20chain%20management" title=" sustainable supply chain management"> sustainable supply chain management</a>, <a href="https://publications.waset.org/abstracts/search?q=corporate%20sustainability" title=" corporate sustainability"> corporate sustainability</a>, <a href="https://publications.waset.org/abstracts/search?q=oil%20and%20gas" title=" oil and gas"> oil and gas</a>, <a href="https://publications.waset.org/abstracts/search?q=business%20performance" title=" business performance"> business performance</a> </p> <a href="https://publications.waset.org/abstracts/165338/sustainable-supply-chain-management-practices-challenges-and-opportunities-a-case-study-of-small-and-medium-sized-enterprises-within-the-oil-and-gas-sector" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/165338.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">127</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">23</span> Visual Inspection of Road Conditions Using Deep Convolutional Neural Networks</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christos%20Theoharatos">Christos Theoharatos</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitris%20Tsourounis"> Dimitris Tsourounis</a>, <a href="https://publications.waset.org/abstracts/search?q=Spiros%20Oikonomou"> Spiros Oikonomou</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreas%20Makedonas"> Andreas Makedonas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper focuses on the problem of visually inspecting and recognizing the road conditions in front of moving vehicles, targeting automotive scenarios. The goal of road inspection is to identify whether the road is slippery or not, as well as to detect possible anomalies on the road surface like potholes or body bumps/humps. Our work is based on an artificial intelligence methodology for real-time monitoring of road conditions in autonomous driving scenarios, using state-of-the-art deep convolutional neural network (CNN) techniques. Initially, the road and ego lane are segmented within the field of view of the camera that is integrated into the front part of the vehicle. A novel classification CNN is utilized to identify among plain and slippery road textures (e.g., wet, snow, etc.). Simultaneously, a robust detection CNN identifies severe surface anomalies within the ego lane, such as potholes and speed bumps/humps, within a distance of 5 to 25 meters. The overall methodology is illustrated under the scope of an integrated application (or system), which can be integrated into complete Advanced Driver-Assistance Systems (ADAS) systems that provide a full range of functionalities. The outcome of the proposed techniques present state-of-the-art detection and classification results and real-time performance running on AI accelerator devices like Intel’s Myriad 2/X Vision Processing Unit (VPU). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=deep%20learning" title="deep learning">deep learning</a>, <a href="https://publications.waset.org/abstracts/search?q=convolutional%20neural%20networks" title=" convolutional neural networks"> convolutional neural networks</a>, <a href="https://publications.waset.org/abstracts/search?q=road%20condition%20classification" title=" road condition classification"> road condition classification</a>, <a href="https://publications.waset.org/abstracts/search?q=embedded%20systems" title=" embedded systems"> embedded systems</a> </p> <a href="https://publications.waset.org/abstracts/116793/visual-inspection-of-road-conditions-using-deep-convolutional-neural-networks" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/116793.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">134</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">22</span> The Greek Version of the Southampton Nostalgia Scale: Psychometric Properties in Young Adults and Associations with Life Satisfaction, Positive and Negative Emotions, Time Perspective and Wellbeing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Eirini%20Petratou">Eirini Petratou</a>, <a href="https://publications.waset.org/abstracts/search?q=Pezirkianidis%20Christos"> Pezirkianidis Christos</a>, <a href="https://publications.waset.org/abstracts/search?q=Anastassios%20Stalikas"> Anastassios Stalikas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nostalgia is characterized as a mental state of human’s emotional longing for the past that activates both positive and negative emotions. The bittersweet emotions that are activated by nostalgia aid psychological functions to humans and are depended on the type of stimuli that evoke nostalgia but also on the nostalgia activation context. In general, despite that nostalgia can be activated and experienced by all people; however, it differs both in terms of nostalgia experience but also nostalgia frequency. As a matter of fact, nostalgia experience along with nostalgia frequency differs according to the level of the nostalgia proneness. People with high nostalgia proneness tend to experience nostalgia more intensely and frequently than people with low nostalgia proneness. Nostalgia proneness is considered as a basic individual difference that affects the experience of nostalgia, and it can be measured by the Southampton Nostalgia Scale (SNS); a psychometric instrument that measures human’s nostalgia proneness consisting of seven questions that assess a person’s attitude towards nostalgia, the degree of experience or tendency to nostalgic feelings and the nostalgia frequency. In the current study, we translated, validated and calibrated the SNS in Greek population (N = 267). For the calibration process, we used several scales relevant to positive dimensions, such as life satisfaction, positive and negative emotions, time perspective and wellbeing. A confirmatory factor analysis revealed the factors that provide a good Southampton Nostalgia Proneness model fit for young adult Greek population. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nostalgia%20proneness" title="nostalgia proneness">nostalgia proneness</a>, <a href="https://publications.waset.org/abstracts/search?q=nostalgia" title=" nostalgia"> nostalgia</a>, <a href="https://publications.waset.org/abstracts/search?q=psychometric%20instruments" title=" psychometric instruments"> psychometric instruments</a>, <a href="https://publications.waset.org/abstracts/search?q=psychometric%20properties" title=" psychometric properties"> psychometric properties</a> </p> <a href="https://publications.waset.org/abstracts/100958/the-greek-version-of-the-southampton-nostalgia-scale-psychometric-properties-in-young-adults-and-associations-with-life-satisfaction-positive-and-negative-emotions-time-perspective-and-wellbeing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/100958.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">151</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">21</span> A Literature Review on Emotion Recognition Using Wireless Body Area Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christodoulou%20Christos">Christodoulou Christos</a>, <a href="https://publications.waset.org/abstracts/search?q=Politis%20Anastasios"> Politis Anastasios</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The utilization of Wireless Body Area Network (WBAN) is experiencing a notable surge in popularity as a result of its widespread implementation in the field of smart health. WBANs utilize small sensors implanted within the human body to monitor and record physiological indicators. These sensors transmit the collected data to hospitals and healthcare facilities through designated access points. Bio-sensors exhibit a diverse array of shapes and sizes, and their deployment can be tailored to the condition of the individual. Multiple sensors may be strategically placed within, on, or around the human body to effectively observe, record, and transmit essential physiological indicators. These measurements serve as a basis for subsequent analysis, evaluation, and therapeutic interventions. In conjunction with physical health concerns, numerous smartwatches are engineered to employ artificial intelligence techniques for the purpose of detecting mental health conditions such as depression and anxiety. The utilization of smartwatches serves as a secure and cost-effective solution for monitoring mental health. Physiological signals are widely regarded as a highly dependable method for the recognition of emotions due to the inherent inability of individuals to deliberately influence them over extended periods of time. The techniques that WBANs employ to recognize emotions are thoroughly examined in this article. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=emotion%20recognition" title="emotion recognition">emotion recognition</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20body%20area%20network" title=" wireless body area network"> wireless body area network</a>, <a href="https://publications.waset.org/abstracts/search?q=WBAN" title=" WBAN"> WBAN</a>, <a href="https://publications.waset.org/abstracts/search?q=ERC" title=" ERC"> ERC</a>, <a href="https://publications.waset.org/abstracts/search?q=wearable%20devices" title=" wearable devices"> wearable devices</a>, <a href="https://publications.waset.org/abstracts/search?q=psychological%20signals" title=" psychological signals"> psychological signals</a>, <a href="https://publications.waset.org/abstracts/search?q=emotion" title=" emotion"> emotion</a>, <a href="https://publications.waset.org/abstracts/search?q=smart-watch" title=" smart-watch"> smart-watch</a>, <a href="https://publications.waset.org/abstracts/search?q=prediction" title=" prediction"> prediction</a> </p> <a href="https://publications.waset.org/abstracts/184420/a-literature-review-on-emotion-recognition-using-wireless-body-area-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184420.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">50</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">20</span> Contrast-to-Noise Ratio Comparison of Different Calcification Types in Dual Energy Breast Imaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vaia%20N.%20Koukou">Vaia N. Koukou</a>, <a href="https://publications.waset.org/abstracts/search?q=Niki%20D.%20Martini"> Niki D. Martini</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20P.%20Fountos"> George P. Fountos</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20M.%20Michail"> Christos M. Michail</a>, <a href="https://publications.waset.org/abstracts/search?q=Athanasios%20Bakas"> Athanasios Bakas</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioannis%20S.%20Kandarakis"> Ioannis S. Kandarakis</a>, <a href="https://publications.waset.org/abstracts/search?q=George%20C.%20Nikiforidis"> George C. Nikiforidis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Various substitute materials of calcifications are used in phantom measurements and simulation studies in mammography. These include calcium carbonate, calcium oxalate, hydroxyapatite and aluminum. The aim of this study is to compare the contrast-to-noise ratio (CNR) values of the different calcification types using the dual energy method. The constructed calcification phantom consisted of three different calcification types and thicknesses: hydroxyapatite, calcite and calcium oxalate of 100, 200, 300 thicknesses. The breast tissue equivalent materials were polyethylene and polymethyl methacrylate slabs simulating adipose tissue and glandular tissue, respectively. The total thickness was 4.2 cm with 50% fixed glandularity. The low- (LE) and high-energy (HE) images were obtained from a tungsten anode using 40 kV filtered with 0.1 mm cadmium and 70 kV filtered with 1 mm copper, respectively. A high resolution complementary metal-oxide-semiconductor (CMOS) active pixel sensor (APS) X-ray detector was used. The total mean glandular dose (MGD) and entrance surface dose (ESD) from the LE and HE images were constrained to typical levels (MGD=1.62 mGy and ESD=1.92 mGy). On average, the CNR of hydroxyapatite calcifications was 1.4 times that of calcite calcifications and 2.5 times that of calcium oxalate calcifications. The higher CNR values of hydroxyapatite are attributed to its attenuation properties compared to the other calcification materials, leading to higher contrast in the dual energy image. This work was supported by Grant Ε.040 from the Research Committee of the University of Patras (Programme K. Karatheodori). <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=calcification%20materials" title="calcification materials">calcification materials</a>, <a href="https://publications.waset.org/abstracts/search?q=CNR" title=" CNR"> CNR</a>, <a href="https://publications.waset.org/abstracts/search?q=dual%20energy" title=" dual energy"> dual energy</a>, <a href="https://publications.waset.org/abstracts/search?q=X-rays" title=" X-rays"> X-rays</a> </p> <a href="https://publications.waset.org/abstracts/63600/contrast-to-noise-ratio-comparison-of-different-calcification-types-in-dual-energy-breast-imaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/63600.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">357</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">19</span> Management Prospects of Winery By-Products Based on Phenolic Compounds and Antioxidant Activity of Grape Skins: The Case of Greek Ionian Islands</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marinos%20Xagoraris">Marinos Xagoraris</a>, <a href="https://publications.waset.org/abstracts/search?q=Iliada%20K.%20Lappa"> Iliada K. Lappa</a>, <a href="https://publications.waset.org/abstracts/search?q=Charalambos%20Kanakis"> Charalambos Kanakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitra%20Daferera"> Dimitra Daferera</a>, <a href="https://publications.waset.org/abstracts/search?q=Christina%20Papadopoulou"> Christina Papadopoulou</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgios%20Sourounis"> Georgios Sourounis</a>, <a href="https://publications.waset.org/abstracts/search?q=Charilaos%20Giotis"> Charilaos Giotis</a>, <a href="https://publications.waset.org/abstracts/search?q=Pavlos%20Bouchagier"> Pavlos Bouchagier</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20S.%20Pappas"> Christos S. Pappas</a>, <a href="https://publications.waset.org/abstracts/search?q=Petros%20A.%20Tarantilis"> Petros A. Tarantilis</a>, <a href="https://publications.waset.org/abstracts/search?q=Efstathia%20Skotti"> Efstathia Skotti</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The aim of this work was to recover phenolic compounds from grape skins produced in Greek varieties of the Ionian Islands in order to form the basis of calculations for their further utilization in the context of the circular economy. Isolation and further utilization of phenolic compounds is an important issue in winery by-products. For this purpose, 37 samples were collected, extracted, and analyzed in an attempt to provide the appropriate basis for their sustainable exploitation. Extraction of the bioactive compounds was held using an eco-friendly, non-toxic, and highly effective water-glycerol solvent system. Then, extracts were analyzed using UV-Vis, liquid chromatography-mass spectrometry (LC-MS), FTIR, and Raman spectroscopy. Also, total phenolic content and antioxidant activity were measured. LC-MS chromatography showed qualitative differences between different varieties. Peaks were attributed to monomeric 3-flavanols as well as monomeric, dimeric, and trimeric proanthocyanidins. The FT-IR and Raman spectra agreed with the chromatographic data and contributed to identifying phenolic compounds. Grape skins exhibited high total phenolic content (TPC), and it was proved that during vinification, a large number of polyphenols remained in the pomace. This study confirmed that grape skins from Ionian Islands are a promising source of bioactive compounds, suggesting their utilization under a bio-economic and environmental strategic framework. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=antioxidant%20activity" title="antioxidant activity">antioxidant activity</a>, <a href="https://publications.waset.org/abstracts/search?q=grape%20skin" title=" grape skin"> grape skin</a>, <a href="https://publications.waset.org/abstracts/search?q=phenolic%20compounds" title=" phenolic compounds"> phenolic compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20recovery" title=" waste recovery"> waste recovery</a> </p> <a href="https://publications.waset.org/abstracts/134702/management-prospects-of-winery-by-products-based-on-phenolic-compounds-and-antioxidant-activity-of-grape-skins-the-case-of-greek-ionian-islands" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/134702.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">148</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">18</span> Deficit Drip Irrigation in Organic Cultivation of Aromatic Plant</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vasileios%20A.%20Giouvanis">Vasileios A. Giouvanis</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20D.%20Papanikolaou"> Christos D. Papanikolaou</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitrios%20S.%20Dimakas"> Dimitrios S. Dimakas</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria%20A.%20Sakellariou-Makrantonaki"> Maria A. Sakellariou-Makrantonaki</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In countries with limited water resources, where the irrigation demands are higher than the 70% of the total water use, the demand for fresh water increases while the quality of this natural resource is downgraded. The aromatic and pharmaceutical plants hold a high position in the culture of the most civilizations through the centuries. The ‘Mountain Tea,’ species of the Greek flora, is part of a series of aromatic plants and herbs that are famous for their pharmaceutical properties as well as their byproducts and their essential oils. The aim of this research was to study the effects of full and deficit irrigation on the growing and productive characteristics of organically cultivated ‘Mountain Tea’ (Sideritis raeseri). The research took place at the University of Thessaly farm in Velestino, Magnesia - Central Greece, during the year 2017, which was the third growing season. The experiment consisted of three treatments in three replications. The experimental design was a fully randomized complete block. Surface drip irrigation was used to irrigate the experimental plots. In the first treatment, the 75% (deficit irrigation) of the daily water needs was applied. In the second treatment, the 100% (full irrigation) of the daily water needs was applied. The third treatment was not irrigated (rainfed). The crop water needs were calculated according to the daily measured evapotranspiration (ETc) using the Penman-Monteith method (FAO 56). The plants’ height, fresh and dry biomass production were measured. The results showed that only the irrigated ‘Mountain Tea’ can be cultivated at low altitude areas with satisfactory results. Moreover, there are no statistically significant differences (P < 0.05) at the growing and productive characteristics between full and deficit irrigation treatments, which proves that by deficit irrigation, an important amount of irrigation water can be saved. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=mountain%20tea" title="mountain tea">mountain tea</a>, <a href="https://publications.waset.org/abstracts/search?q=surface%20drip%20irrigation" title=" surface drip irrigation"> surface drip irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=deficit%20irrigation" title=" deficit irrigation"> deficit irrigation</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20saving" title=" water saving"> water saving</a> </p> <a href="https://publications.waset.org/abstracts/87754/deficit-drip-irrigation-in-organic-cultivation-of-aromatic-plant" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87754.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">163</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">17</span> Solid Phase Micro-Extraction/Gas Chromatography-Mass Spectrometry Study of Volatile Compounds from Strawberry Tree and Autumn Heather Honeys</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marinos%20Xagoraris">Marinos Xagoraris</a>, <a href="https://publications.waset.org/abstracts/search?q=Elisavet%20Lazarou"> Elisavet Lazarou</a>, <a href="https://publications.waset.org/abstracts/search?q=Eleftherios%20Alissandrakis"> Eleftherios Alissandrakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20S.%20Pappas"> Christos S. Pappas</a>, <a href="https://publications.waset.org/abstracts/search?q=Petros%20A.%20Tarantilis"> Petros A. Tarantilis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Strawberry tree (Arbutus unedo L.) and autumn heather (Erica manipuliflora Salisb.) are important beekeeping plants of Greece. Six monofloral honeys (four strawberry tree, two autumn heather) were analyzed by means of Solid Phase Micro-Extraction (SPME, 60 min, 60 oC) followed by Gas Chromatography coupled to Mass Spectrometry (GC-MS) for the purpose of assessing the botanical origin. A Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS) fiber was employed, and benzophenone was used as internal standard. The volatile compounds with higher concentration (μg/ g of honey expressed as benzophenone) from strawberry tree honey samples, were α-isophorone (2.50-8.12); 3,4,5-trimethyl-phenol (0.20-4.62); 2-hydroxy-isophorone (0.06-0.53); 4-oxoisophorone (0.38-0.46); and β-isophorone (0.02-0.43). Regarding heather honey samples, the most abundant compounds were 1-methoxy-4-propyl-benzene (1.22-1.40); p-anisaldehyde (0.97-1.28); p-anisic acid (0.35-0.58); 2-furaldehyde (0.52-0.57); and benzaldehyde (0.41-0.56). Norisoprenoids are potent floral markers for strawberry-tree honey. β-isophorone is found exclusively in the volatile fraction of this type of honey, while also α-isophorone, 4-oxoisophorone and 2-hydroxy-isophorone could be considered as additional marker compounds. The analysis of autumn heather honey revealed that phenolic compounds are the most abundant and p-anisaldehyde; 1-methoxy-4-propyl-benzene; and p-anisic acid could serve as potent marker compounds. In conclusion, marker compounds for the determination of the botanical origin for these honeys could be identified as several norisoprenoids and phenolic components were found exclusively or in higher concentrations compared to common Greek honey varieties. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=SPME%2FGC-MS" title="SPME/GC-MS">SPME/GC-MS</a>, <a href="https://publications.waset.org/abstracts/search?q=volatile%20compounds" title=" volatile compounds"> volatile compounds</a>, <a href="https://publications.waset.org/abstracts/search?q=heather%20honey" title=" heather honey"> heather honey</a>, <a href="https://publications.waset.org/abstracts/search?q=strawberry%20tree%20honey" title=" strawberry tree honey"> strawberry tree honey</a> </p> <a href="https://publications.waset.org/abstracts/136002/solid-phase-micro-extractiongas-chromatography-mass-spectrometry-study-of-volatile-compounds-from-strawberry-tree-and-autumn-heather-honeys" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/136002.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">200</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">16</span> The Axonal Connectivity of Motor and Premotor Areas as Revealed through Fiber Dissections: Shedding Light on the Structural Correlates of Complex Motor Behavior</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Spyridon%20Komaitis">Spyridon Komaitis</a>, <a href="https://publications.waset.org/abstracts/search?q=Christos%20Koutsarnakis"> Christos Koutsarnakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Evangelos%20Drosos"> Evangelos Drosos</a>, <a href="https://publications.waset.org/abstracts/search?q=Aristotelis%20Kalyvas"> Aristotelis Kalyvas</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This study opts to investigate the intrinsic architecture, morphology, and spatial relationship of the subcortical pathways implicated in the connectivity of the motor/premotor cortex and SMA/pre-SMA complex. Twenty normal, adult, formalin-fixed cerebral hemispheres were explored through the fiber micro-dissection technique. Lateral to medial and medial to lateral dissections focused on the area of interest were performed in a tandem manner and under the surgical microscope. We traced the subcortical architecture, spatial relationships, and axonal connectivity of four major pathways: a) the dorsal component of the SLF (SLF-I) was found to reside in the medial aspect of the hemisphere and seen to connect the precuneus with the SMA and pre-SMA complex, b) the frontal longitudinal system (FLS) was consistently encountered as the natural anterior continuation of the SLF-II and SLF-III and connected the premotor and prefrontal cortices c) the fronto-caudate tract (FCT), a fan-shaped tract, was documented to participate in connectivity of the prefrontal and premotor cortices to the head and body of the caudate nucleus and d) the cortico-tegmental tract(CTT) was invariably recorded to subserve the connectivity of the tegmental area with the fronto-parietal cortex. No hemispheric asymmetries were recorded for any of the implicated pathways. Sub-segmentation systems were also proposed for each of the aforementioned tracts. The structural connectivity and functional specialization of motor and premotor areas in the human brain remain vague to this day as most of the available evidence derives either from animal or tractographic studies. By using the fiber-microdissection technique as our main method of investigation, we provide sound structural evidence on the delicate anatomy of the related white matter pathways. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=neuroanatomy" title="neuroanatomy">neuroanatomy</a>, <a href="https://publications.waset.org/abstracts/search?q=premotor" title=" premotor"> premotor</a>, <a href="https://publications.waset.org/abstracts/search?q=motor" title=" motor"> motor</a>, <a href="https://publications.waset.org/abstracts/search?q=connectivity" title=" connectivity"> connectivity</a> </p> <a href="https://publications.waset.org/abstracts/133298/the-axonal-connectivity-of-motor-and-premotor-areas-as-revealed-through-fiber-dissections-shedding-light-on-the-structural-correlates-of-complex-motor-behavior" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/133298.pdf" target="_blank" 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