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Mihaela Botez</title> <meta name="description" content="Search results for: Ruxandra Mihaela Botez"> <meta name="keywords" content="Ruxandra Mihaela Botez"> <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 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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="Ruxandra Mihaela Botez"> <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> 59</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: Ruxandra Mihaela Botez</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">59</span> Aerodynamic Coefficients Prediction from Minimum Computation Combinations Using OpenVSP Software</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marine%20Segui">Marine Segui</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez"> Ruxandra Mihaela Botez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> OpenVSP is an aerodynamic solver developed by National Aeronautics and Space Administration (NASA) that allows building a reliable model of an aircraft. This software performs an aerodynamic simulation according to the angle of attack of the aircraft makes between the incoming airstream, and its speed. A reliable aerodynamic model of the Cessna Citation X was designed but it required a lot of computation time. As a consequence, a prediction method was established that allowed predicting lift and drag coefficients for all Mach numbers and for all angles of attack, exclusively for stall conditions, from a computation of three angles of attack and only one Mach number. Aerodynamic coefficients given by the prediction method for a Cessna Citation X model were finally compared with aerodynamics coefficients obtained using a complete OpenVSP study. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerodynamic" title="aerodynamic">aerodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=coefficient" title=" coefficient"> coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=cruise" title=" cruise"> cruise</a>, <a href="https://publications.waset.org/abstracts/search?q=improving" title=" improving"> improving</a>, <a href="https://publications.waset.org/abstracts/search?q=longitudinal" title=" longitudinal"> longitudinal</a>, <a href="https://publications.waset.org/abstracts/search?q=openVSP" title=" openVSP"> openVSP</a>, <a href="https://publications.waset.org/abstracts/search?q=solver" title=" solver"> solver</a>, <a href="https://publications.waset.org/abstracts/search?q=time" title=" time"> time</a> </p> <a href="https://publications.waset.org/abstracts/85268/aerodynamic-coefficients-prediction-from-minimum-computation-combinations-using-openvsp-software" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85268.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">235</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">58</span> Cessna Citation X Performances Improvement by an Adaptive Winglet during the Cruise Flight</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marine%20Segui">Marine Segui</a>, <a href="https://publications.waset.org/abstracts/search?q=Simon%20Bezin"> Simon Bezin</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez"> Ruxandra Mihaela Botez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As part of a ‘Morphing-Wing’ idea, this study consists of measuring how a winglet, which is able to change its shape during the flight, is efficient. Conventionally, winglets are fixed-vertical platforms at the wingtips, optimized for a cruise condition that the airplane should use most of the time. However, during a cruise, an airplane flies through a lot of cruise conditions corresponding to altitudes variations from 30,000 to 45,000 ft. The fixed winglets are not optimized for these variations, and consequently, they are supposed to generate some drag, and thus to deteriorate aircraft fuel consumption. This research assumes that it exists a winglet position that reduces the fuel consumption for each cruise condition. In this way, the methodology aims to find these optimal winglet positions, and to further simulate, and thus estimate the fuel consumption of an aircraft wearing this type of adaptive winglet during several cruise conditions. The adaptive winglet is assumed to have degrees of freedom given by the various changes of following surfaces: the tip chord, the sweep and the dihedral angles. Finally, results obtained during cruise simulations are presented in this paper. These results show that an adaptive winglet can reduce, thus improve up to 2.12% the fuel consumption of an aircraft during a cruise. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerodynamic" title="aerodynamic">aerodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=Cessna" title=" Cessna"> Cessna</a>, <a href="https://publications.waset.org/abstracts/search?q=Citation%20X" title=" Citation X"> Citation X</a>, <a href="https://publications.waset.org/abstracts/search?q=optimization" title=" optimization"> optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=winglet" title=" winglet"> winglet</a> </p> <a href="https://publications.waset.org/abstracts/87020/cessna-citation-x-performances-improvement-by-an-adaptive-winglet-during-the-cruise-flight" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87020.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">243</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">57</span> Propeller Performance Modeling through a Computational Fluid Dynamics Analysis Method</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maxime%20Alex%20Junior%20Kuitche">Maxime Alex Junior Kuitche</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez"> Ruxandra Mihaela Botez</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean-Chirstophe%20Maunand"> Jean-Chirstophe Maunand</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The evolution of aircraft is closely linked to the study and improvement of propulsion systems. Determining the propulsion performance is a real challenge in aircraft modeling and design. In addition to theoretical methodologies, experimental procedures are used to obtain a good estimation of the propulsion performances. For piston-propeller propulsion, the propeller needs several experimental tests which could be extremely demanding in terms of time and money. This paper presents a new procedure to estimate the performance of a propeller from a numerical approach using computational fluid dynamic analysis. The propeller was initially scanned, and then, its 3D model was represented using CATIA. A structured meshing and Shear Stress Transition k-ω turbulence model were applied to describe accurately the flow pattern around the propeller. Thus, the Partial Differential Equations were solved using ANSYS FLUENT software. The method was applied on the UAS-S45’s propeller designed and manufactured by Hydra Technologies in Mexico. An extensive investigation was performed for several flight conditions in terms of altitudes and airspeeds with the aim to determine thrust coefficients, power coefficients and efficiency of the propeller. The Computational Fluid Dynamics results were compared with experimental data acquired from wind tunnel tests performed at the LARCASE Price-Paidoussis wind tunnel. The results of this comparison have demonstrated that our approach was highly accurate. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CFD%20analysis" title="CFD analysis">CFD analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=propeller%20performance" title=" propeller performance"> propeller performance</a>, <a href="https://publications.waset.org/abstracts/search?q=unmanned%20aerial%20system%20propeller" title=" unmanned aerial system propeller"> unmanned aerial system propeller</a>, <a href="https://publications.waset.org/abstracts/search?q=UAS-S45" title=" UAS-S45"> UAS-S45</a> </p> <a href="https://publications.waset.org/abstracts/87348/propeller-performance-modeling-through-a-computational-fluid-dynamics-analysis-method" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87348.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">353</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">56</span> Design and Validation of an Aerodynamic Model of the Cessna Citation X Horizontal Stabilizer Using both OpenVSP and Digital Datcom</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Marine%20Segui">Marine Segui</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthieu%20Mantilla"> Matthieu Mantilla</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez"> Ruxandra Mihaela Botez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This research is the part of a major project at the Research Laboratory in Active Controls, Avionics and Aeroservoelasticity (LARCASE) aiming to improve a Cessna Citation X aircraft cruise performance with an application of the morphing wing technology on its horizontal tail. However, the horizontal stabilizer of the Cessna Citation X turns around its span axis with an angle between -8 and 2 degrees. Within this range, the horizontal stabilizer generates certainly some unwanted drag. To cancel this drag, the LARCASE proposes to trim the aircraft with a horizontal stabilizer equipped by a morphing wing technology. This technology aims to optimize aerodynamic performances by changing the conventional horizontal tail shape during the flight. As a consequence, this technology will be able to generate enough lift on the horizontal tail to balance the aircraft without an unwanted drag generation. To conduct this project, an accurate aerodynamic model of the horizontal tail is firstly required. This aerodynamic model will finally allow precise comparison between a conventional horizontal tail and a morphed horizontal tail results. This paper presents how this aerodynamic model was designed. In this way, it shows how the 2D geometry of the horizontal tail was collected and how the unknown airfoil’s shape of the horizontal tail has been recovered. Finally, the complete horizontal tail airfoil shape was found and a comparison between aerodynamic polar of the real horizontal tail and the horizontal tail found in this paper shows a maximum difference of 0.04 on the lift or the drag coefficient which is very good. Aerodynamic polar data of the aircraft horizontal tail are obtained from the CAE Inc. level D research aircraft flight simulator of the Cessna Citation X. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerodynamic" title="aerodynamic">aerodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=Cessna" title=" Cessna"> Cessna</a>, <a href="https://publications.waset.org/abstracts/search?q=citation" title=" citation"> citation</a>, <a href="https://publications.waset.org/abstracts/search?q=coefficient" title=" coefficient"> coefficient</a>, <a href="https://publications.waset.org/abstracts/search?q=Datcom" title=" Datcom"> Datcom</a>, <a href="https://publications.waset.org/abstracts/search?q=drag" title=" drag"> drag</a>, <a href="https://publications.waset.org/abstracts/search?q=lift" title=" lift"> lift</a>, <a href="https://publications.waset.org/abstracts/search?q=longitudinal" title=" longitudinal"> longitudinal</a>, <a href="https://publications.waset.org/abstracts/search?q=model" title=" model"> model</a>, <a href="https://publications.waset.org/abstracts/search?q=OpenVSP" title=" OpenVSP"> OpenVSP</a> </p> <a href="https://publications.waset.org/abstracts/84863/design-and-validation-of-an-aerodynamic-model-of-the-cessna-citation-x-horizontal-stabilizer-using-both-openvsp-and-digital-datcom" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/84863.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">373</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">55</span> Development of an Efficient Algorithm for Cessna Citation X Speed Optimization in Cruise</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Georges%20Ghazi">Georges Ghazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Marc-Henry%20Devillers"> Marc-Henry Devillers</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20M.%20Botez"> Ruxandra M. Botez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Aircraft flight trajectory optimization has been identified to be a promising solution for reducing both airline costs and the aviation net carbon footprint. Nowadays, this role has been mainly attributed to the flight management system. This system is an onboard multi-purpose computer responsible for providing the crew members with the optimized flight plan from a destination to the next. To accomplish this function, the flight management system uses a variety of look-up tables to compute the optimal speed and altitude for each flight regime instantly. Because the cruise is the longest segment of a typical flight, the proposed algorithm is focused on minimizing fuel consumption for this flight phase. In this paper, a complete methodology to estimate the aircraft performance and subsequently compute the optimal speed in cruise is presented. Results showed that the obtained performance database was accurate enough to predict the flight costs associated with the cruise phase. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Cessna%20Citation%20X" title="Cessna Citation X">Cessna Citation X</a>, <a href="https://publications.waset.org/abstracts/search?q=cruise%20speed%20optimization" title=" cruise speed optimization"> cruise speed optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=flight%20cost" title=" flight cost"> flight cost</a>, <a href="https://publications.waset.org/abstracts/search?q=cost%20index" title=" cost index"> cost index</a>, <a href="https://publications.waset.org/abstracts/search?q=and%20golden%20section%20search" title=" and golden section search"> and golden section search</a> </p> <a href="https://publications.waset.org/abstracts/85266/development-of-an-efficient-algorithm-for-cessna-citation-x-speed-optimization-in-cruise" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85266.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">292</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">54</span> Cessna Citation X Business Aircraft Stability Analysis Using Linear Fractional Representation LFRs Model</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yamina%20Boughari">Yamina Boughari</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez"> Ruxandra Mihaela Botez</a>, <a href="https://publications.waset.org/abstracts/search?q=Florian%20Theel"> Florian Theel</a>, <a href="https://publications.waset.org/abstracts/search?q=Georges%20Ghazi"> Georges Ghazi</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Clearance of flight control laws of a civil aircraft is a long and expensive process in the Aerospace industry. Thousands of flight combinations in terms of speeds, altitudes, gross weights, centers of gravity and angles of attack have to be investigated, and proved to be safe. Nonetheless, in this method, a worst flight condition can be easily missed, and its missing would lead to a critical situation. Definitively, it would be impossible to analyze a model because of the infinite number of cases contained within its flight envelope, that might require more time, and therefore more design cost. Therefore, in industry, the technique of the flight envelope mesh is commonly used. For each point of the flight envelope, the simulation of the associated model ensures the satisfaction or not of specifications. In order to perform fast, comprehensive and effective analysis, other varying parameters models were developed by incorporating variations, or uncertainties in the nominal models, known as Linear Fractional Representation LFR models; these LFR models were able to describe the aircraft dynamics by taking into account uncertainties over the flight envelope. In this paper, the LFRs models are developed using the speeds and altitudes as varying parameters; The LFR models were built using several flying conditions expressed in terms of speeds and altitudes. The use of such a method has gained a great interest by the aeronautical companies that have seen a promising future in the modeling, and particularly in the design and certification of control laws. In this research paper, we will focus on the Cessna Citation X open loop stability analysis. The data are provided by a Research Aircraft Flight Simulator of Level D, that corresponds to the highest level flight dynamics certification; this simulator was developed by CAE Inc. and its development was based on the requirements of research at the LARCASE laboratory. The acquisition of these data was used to develop a linear model of the airplane in its longitudinal and lateral motions, and was further used to create the LFR’s models for 12 XCG /weights conditions, and thus the whole flight envelope using a friendly Graphical User Interface developed during this study. Then, the LFR’s models are analyzed using Interval Analysis method based upon Lyapunov function, and also the ‘stability and robustness analysis’ toolbox. The results were presented under the form of graphs, thus they have offered good readability, and were easily exploitable. The weakness of this method stays in a relatively long calculation, equal to about four hours for the entire flight envelope. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=flight%20control%20clearance" title="flight control clearance">flight control clearance</a>, <a href="https://publications.waset.org/abstracts/search?q=LFR" title=" LFR"> LFR</a>, <a href="https://publications.waset.org/abstracts/search?q=stability%20analysis" title=" stability analysis"> stability analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=robustness%20analysis" title=" robustness analysis"> robustness analysis</a> </p> <a href="https://publications.waset.org/abstracts/43594/cessna-citation-x-business-aircraft-stability-analysis-using-linear-fractional-representation-lfrs-model" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/43594.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">352</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">53</span> Aerodynamic Modelling of Unmanned Aerial System through Computational Fluid Dynamics: Application to the UAS-S45 Balaam</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Maxime%20A.%20J.%20Kuitche">Maxime A. J. Kuitche</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20M.%20Botez"> Ruxandra M. Botez</a>, <a href="https://publications.waset.org/abstracts/search?q=Arthur%20Guillemin"> Arthur Guillemin</a> </p> <p class="card-text"><strong>Abstract:</strong></p> As the Unmanned Aerial Systems have found diverse utilities in both military and civil aviation, the necessity to obtain an accurate aerodynamic model has shown an enormous growth of interest. Recent modeling techniques are procedures using optimization algorithms and statistics that require many flight tests and are therefore extremely demanding in terms of costs. This paper presents a procedure to estimate the aerodynamic behavior of an unmanned aerial system from a numerical approach using computational fluid dynamic analysis. The study was performed using an unstructured mesh obtained from a grid convergence analysis at a Mach number of 0.14, and at an angle of attack of 0°. The flow around the aircraft was described using a standard k-ω turbulence model. Thus, the Reynold Averaged Navier-Stokes (RANS) equations were solved using ANSYS FLUENT software. The method was applied on the UAS-S45 designed and manufactured by Hydra Technologies in Mexico. The lift, the drag, and the pitching moment coefficients were obtained at different angles of attack for several flight conditions defined in terms of altitudes and Mach numbers. The results obtained from the Computational Fluid Dynamics analysis were compared with the results obtained by using the DATCOM semi-empirical procedure. This comparison has indicated that our approach is highly accurate and that the aerodynamic model obtained could be useful to estimate the flight dynamics of the UAS-S45. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aerodynamic%20modelling" title="aerodynamic modelling">aerodynamic modelling</a>, <a href="https://publications.waset.org/abstracts/search?q=CFD%20Analysis" title=" CFD Analysis"> CFD Analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=ANSYS%20FLUENT" title=" ANSYS FLUENT"> ANSYS FLUENT</a>, <a href="https://publications.waset.org/abstracts/search?q=UAS-S45" title=" UAS-S45"> UAS-S45</a> </p> <a href="https://publications.waset.org/abstracts/87370/aerodynamic-modelling-of-unmanned-aerial-system-through-computational-fluid-dynamics-application-to-the-uas-s45-balaam" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87370.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">374</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">52</span> In-Flight Aircraft Performance Model Enhancement Using Adaptive Lookup Tables</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Georges%20Ghazi">Georges Ghazi</a>, <a href="https://publications.waset.org/abstracts/search?q=Magali%20Gelhaye"> Magali Gelhaye</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Botez"> Ruxandra Botez</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Over the years, the Flight Management System (FMS) has experienced a continuous improvement of its many features, to the point of becoming the pilot’s primary interface for flight planning operation on the airplane. With the assistance of the FMS, the concept of distance and time has been completely revolutionized, providing the crew members with the determination of the optimized route (or flight plan) from the departure airport to the arrival airport. To accomplish this function, the FMS needs an accurate Aircraft Performance Model (APM) of the aircraft. In general, APMs that equipped most modern FMSs are established before the entry into service of an individual aircraft, and results from the combination of a set of ordinary differential equations and a set of performance databases. Unfortunately, an aircraft in service is constantly exposed to dynamic loads that degrade its flight characteristics. These degradations endow two main origins: airframe deterioration (control surfaces rigging, seals missing or damaged, etc.) and engine performance degradation (fuel consumption increase for a given thrust). Thus, after several years of service, the performance databases and the APM associated to a specific aircraft are no longer representative enough of the actual aircraft performance. It is important to monitor the trend of the performance deterioration and correct the uncertainties of the aircraft model in order to improve the accuracy the flight management system predictions. The basis of this research lies in the new ability to continuously update an Aircraft Performance Model (APM) during flight using an adaptive lookup table technique. This methodology was developed and applied to the well-known Cessna Citation X business aircraft. For the purpose of this study, a level D Research Aircraft Flight Simulator (RAFS) was used as a test aircraft. According to Federal Aviation Administration the level D is the highest certification level for the flight dynamics modeling. Basically, using data available in the Flight Crew Operating Manual (FCOM), a first APM describing the variation of the engine fan speed and aircraft fuel flow w.r.t flight conditions was derived. This model was next improved using the proposed methodology. To do that, several cruise flights were performed using the RAFS. An algorithm was developed to frequently sample the aircraft sensors measurements during the flight and compare the model prediction with the actual measurements. Based on these comparisons, a correction was performed on the actual APM in order to minimize the error between the predicted data and the measured data. In this way, as the aircraft flies, the APM will be continuously enhanced, making the FMS more and more precise and the prediction of trajectories more realistic and more reliable. The results obtained are very encouraging. Indeed, using the tables initialized with the FCOM data, only a few iterations were needed to reduce the fuel flow prediction error from an average relative error of 12% to 0.3%. Similarly, the FCOM prediction regarding the engine fan speed was reduced from a maximum error deviation of 5.0% to 0.2% after only ten flights. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aircraft%20performance" title="aircraft performance">aircraft performance</a>, <a href="https://publications.waset.org/abstracts/search?q=cruise" title=" cruise"> cruise</a>, <a href="https://publications.waset.org/abstracts/search?q=trajectory%20optimization" title=" trajectory optimization"> trajectory optimization</a>, <a href="https://publications.waset.org/abstracts/search?q=adaptive%20lookup%20tables" title=" adaptive lookup tables"> adaptive lookup tables</a>, <a href="https://publications.waset.org/abstracts/search?q=Cessna%20Citation%20X" title=" Cessna Citation X"> Cessna Citation X</a> </p> <a href="https://publications.waset.org/abstracts/87528/in-flight-aircraft-performance-model-enhancement-using-adaptive-lookup-tables" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/87528.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">264</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">51</span> The Feasibility of Online, Interactive Workshops to Facilitate Anatomy Education during the UK COVID-19 Lockdowns</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Prabhvir%20Singh%20Marway">Prabhvir Singh Marway</a>, <a href="https://publications.waset.org/abstracts/search?q=Kai%20Lok%20Chan"> Kai Lok Chan</a>, <a href="https://publications.waset.org/abstracts/search?q=Maria-Ruxandra%20Jinga"> Maria-Ruxandra Jinga</a>, <a href="https://publications.waset.org/abstracts/search?q=Rachel%20Bok%20Ying%20Lee"> Rachel Bok Ying Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Matthew%20Bok%20Kit%20Lee"> Matthew Bok Kit Lee</a>, <a href="https://publications.waset.org/abstracts/search?q=Krishan%20Nandapalan"> Krishan Nandapalan</a>, <a href="https://publications.waset.org/abstracts/search?q=Sze%20Yi%20Beh"> Sze Yi Beh</a>, <a href="https://publications.waset.org/abstracts/search?q=Harry%20Carr"> Harry Carr</a>, <a href="https://publications.waset.org/abstracts/search?q=Christopher%20Kui"> Christopher Kui</a> </p> <p class="card-text"><strong>Abstract:</strong></p> We piloted a structured series of online workshops on the 3D segmentation of anatomical structures from CT scans. 33 participants were recruited from four UK universities for two-day workshops between 2020 and 2021. Open-source software (3D-Slicer) was used. We hypothesized that active participation via real-time screen-sharing and voice-communication via Discord would enable improved engagement and learning, despite national lockdowns. Written feedback indicated positive learning experiences, with subjective measures of anatomical understanding and software confidence improving. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=medical%20education" title="medical education">medical education</a>, <a href="https://publications.waset.org/abstracts/search?q=workshop" title=" workshop"> workshop</a>, <a href="https://publications.waset.org/abstracts/search?q=segmentation" title=" segmentation"> segmentation</a>, <a href="https://publications.waset.org/abstracts/search?q=anatomy" title=" anatomy"> anatomy</a> </p> <a href="https://publications.waset.org/abstracts/142850/the-feasibility-of-online-interactive-workshops-to-facilitate-anatomy-education-during-the-uk-covid-19-lockdowns" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/142850.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">50</span> EU Integratıon Impact over the Real Convergence</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Badoiu%20Mihaela%20Catalina">Badoiu Mihaela Catalina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Main focus of COHESION policy was reducing social and economic disparities between member states and regions, sustainable development and equal opportunities. In this perspective, the present study intend to analyze the evolution of the European architecture and its direct impact over the real convergence in the member states. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cooperation" title="cooperation">cooperation</a>, <a href="https://publications.waset.org/abstracts/search?q=European%20union" title=" European union"> European union</a>, <a href="https://publications.waset.org/abstracts/search?q=member%20states" title=" member states"> member states</a>, <a href="https://publications.waset.org/abstracts/search?q=cohesion%20policy" title=" cohesion policy"> cohesion policy</a> </p> <a href="https://publications.waset.org/abstracts/23580/eu-integration-impact-over-the-real-convergence" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/23580.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">459</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">49</span> A Clinician’s Perspective on Electroencephalography Annotation and Analysis for Driver Drowsiness Estimation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Aursulesei">Ruxandra Aursulesei</a>, <a href="https://publications.waset.org/abstracts/search?q=David%20O%E2%80%99Callaghan"> David O’Callaghan</a>, <a href="https://publications.waset.org/abstracts/search?q=Cian%20Ryan"> Cian Ryan</a>, <a href="https://publications.waset.org/abstracts/search?q=Diarmaid%20O%E2%80%99Cualain"> Diarmaid O’Cualain</a>, <a href="https://publications.waset.org/abstracts/search?q=Viktor%20Varkarakis"> Viktor Varkarakis</a>, <a href="https://publications.waset.org/abstracts/search?q=Alina%20Sultana"> Alina Sultana</a>, <a href="https://publications.waset.org/abstracts/search?q=Joseph%20Lemley"> Joseph Lemley</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Human errors caused by drowsiness are among the leading causes of road accidents. Neurobiological research gives information about the electrical signals emitted by neurons firing within the brain. Electrical signal frequencies can be determined by attaching bio-sensors to the head surface. By observing the electrical impulses and the rhythmic interaction of neurons with each other, we can predict the mental state of a person. In this paper, we aim to better understand intersubject and intrasubject variability in terms of electrophysiological patterns that occur at the onset of drowsiness and their evolution with the decreasing of vigilance. The purpose is to lay the foundations for an algorithm that detects the onset of drowsiness before the physical signs become apparent. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=electroencephalography" title="electroencephalography">electroencephalography</a>, <a href="https://publications.waset.org/abstracts/search?q=drowsiness" title=" drowsiness"> drowsiness</a>, <a href="https://publications.waset.org/abstracts/search?q=ADAS" title=" ADAS"> ADAS</a>, <a href="https://publications.waset.org/abstracts/search?q=annotations" title=" annotations"> annotations</a>, <a href="https://publications.waset.org/abstracts/search?q=clinician" title=" clinician"> clinician</a> </p> <a href="https://publications.waset.org/abstracts/156014/a-clinicians-perspective-on-electroencephalography-annotation-and-analysis-for-driver-drowsiness-estimation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/156014.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">115</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">48</span> Numerical Methods for Topological Optimization of Wooden Structural Elements</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Daniela%20Tapusi">Daniela Tapusi</a>, <a href="https://publications.waset.org/abstracts/search?q=Adrian%20Andronic"> Adrian Andronic</a>, <a href="https://publications.waset.org/abstracts/search?q=Naomi%20Tufan"> Naomi Tufan</a>, <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Erba%C8%99u"> Ruxandra Erbașu</a>, <a href="https://publications.waset.org/abstracts/search?q=Ioana%20Teodorescu"> Ioana Teodorescu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The proposed theme of this article falls within the policy of reducing carbon emissions imposed by the ‘Green New Deal’ by replacing structural elements made of energy-intensive materials with ecological materials. In this sense, wood has many qualities (high strength/mass and stiffness/mass ratio, low specific gravity, recovery/recycling) that make it competitive with classic building materials. The topological optimization of the linear glulam elements, resulting from different types of analysis (Finite Element Method, simple regression on metamodels), tests on models or by Monte-Carlo simulation, leads to a material reduction of more than 10%. This article proposes a method of obtaining topologically optimized shapes for different types of glued laminated timber beams. The results obtained will constitute the database for AI training. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=timber" title="timber">timber</a>, <a href="https://publications.waset.org/abstracts/search?q=glued%20laminated%20timber" title=" glued laminated timber"> glued laminated timber</a>, <a href="https://publications.waset.org/abstracts/search?q=artificial-intelligence" title=" artificial-intelligence"> artificial-intelligence</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=carbon%20emissions" title=" carbon emissions"> carbon emissions</a> </p> <a href="https://publications.waset.org/abstracts/187654/numerical-methods-for-topological-optimization-of-wooden-structural-elements" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187654.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">39</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">47</span> A Challenge of the 3ʳᵈ Millenium: The Emotional Intelligence Development</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Florentina%20Hahaianu">Florentina Hahaianu</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Negrescu"> Mihaela Negrescu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The analysis of the positive and negative effects of technology use and abuse in Generation Z comes as a necessity in order to understand their ever-changing emotional development needs. The article quantitatively analyzes the findings of a sociological questionnaire on a group of students in social sciences. It aimed to identify the changes generated by the use of digital resources in the emotional intelligence development. Among the outcomes of our study we include a predilection for IT related activities – be they social, learning, entertainment, etc. which undermines the manifestation of emotional intelligence, especially the reluctance to face-to-face interaction. In this context, the issue of emotional intelligence development comes into focus as a solution to compensate for the undesirable effects that contact with technology has on this generation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20resources" title="digital resources">digital resources</a>, <a href="https://publications.waset.org/abstracts/search?q=emotional%20intelligence" title=" emotional intelligence"> emotional intelligence</a>, <a href="https://publications.waset.org/abstracts/search?q=generation%20Z" title=" generation Z"> generation Z</a>, <a href="https://publications.waset.org/abstracts/search?q=students" title=" students"> students</a> </p> <a href="https://publications.waset.org/abstracts/92373/a-challenge-of-the-3-millenium-the-emotional-intelligence-development" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/92373.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">206</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">46</span> Simulink Library for Reference Current Generation in Active DC Traction Substations</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Popescu">Mihaela Popescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexandru%20Bitoleanu"> Alexandru Bitoleanu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper is focused on the reference current calculation in the compensation mode of the active DC traction substations. The so-called p-q theory of the instantaneous reactive power is used as theoretical foundation. The compensation goal of total compensation is taken into consideration for the operation under both sinusoidal and nonsinusoidal voltage conditions, through the two objectives of unity power factor and perfect harmonic cancelation. Four blocks of reference current generation implement the conceived algorithms and they are included in a specific Simulink library, which is useful in a DSP dSPACE-based platform working under Matlab/Simulink. The simulation results validate the correctness of the implementation and fulfillment of the compensation tasks. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=active%20power%20filter" title="active power filter">active power filter</a>, <a href="https://publications.waset.org/abstracts/search?q=DC%20traction" title=" DC traction"> DC traction</a>, <a href="https://publications.waset.org/abstracts/search?q=p-q%20theory" title=" p-q theory"> p-q theory</a>, <a href="https://publications.waset.org/abstracts/search?q=Simulink%20library" title=" Simulink library"> Simulink library</a> </p> <a href="https://publications.waset.org/abstracts/27955/simulink-library-for-reference-current-generation-in-active-dc-traction-substations" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27955.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">673</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">45</span> Modeling the Saltatory Conduction in Myelinated Axons by Order Reduction</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Barbulescu">Ruxandra Barbulescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Ioan"> Daniel Ioan</a>, <a href="https://publications.waset.org/abstracts/search?q=Gabriela%20Ciuprina"> Gabriela Ciuprina</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The saltatory conduction is the way the action potential is transmitted along a myelinated axon. The potential diffuses along the myelinated compartments and it is regenerated in the Ranvier nodes due to the ion channels allowing the flow across the membrane. For an efficient simulation of populations of neurons, it is important to use reduced order models both for myelinated compartments and for Ranvier nodes and to have control over their accuracy and inner parameters. The paper presents a reduced order model of this neural system which allows an efficient simulation method for the saltatory conduction in myelinated axons. This model is obtained by concatenating reduced order linear models of 1D myelinated compartments and nonlinear 0D models of Ranvier nodes. The models for the myelinated compartments are selected from a series of spatially distributed models developed and hierarchized according to their modeling errors. The extracted model described by a nonlinear PDE of hyperbolic type is able to reproduce the saltatory conduction with acceptable accuracy and takes into account the finite propagation speed of potential. Finally, this model is again reduced in order to make it suitable for the inclusion in large-scale neural circuits. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=action%20potential" title="action potential">action potential</a>, <a href="https://publications.waset.org/abstracts/search?q=myelinated%20segments" title=" myelinated segments"> myelinated segments</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20models" title=" nonlinear models"> nonlinear models</a>, <a href="https://publications.waset.org/abstracts/search?q=Ranvier%20nodes" title=" Ranvier nodes"> Ranvier nodes</a>, <a href="https://publications.waset.org/abstracts/search?q=reduced%20order%20models" title=" reduced order models"> reduced order models</a>, <a href="https://publications.waset.org/abstracts/search?q=saltatory%20conduction" title=" saltatory conduction"> saltatory conduction</a> </p> <a href="https://publications.waset.org/abstracts/83613/modeling-the-saltatory-conduction-in-myelinated-axons-by-order-reduction" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/83613.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">161</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> Automatic MC/DC Test Data Generation from Software Module Description</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sekou%20Kangoye">Sekou Kangoye</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexis%20Todoskoff"> Alexis Todoskoff</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Barreau"> Mihaela Barreau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modified Condition/Decision Coverage (MC/DC) is a structural coverage criterion that is highly recommended or required for safety-critical software coverage. Therefore, many testing standards include this criterion and require it to be satisfied at a particular level of testing (e.g. validation and unit levels). However, an important amount of time is needed to meet those requirements. In this paper we propose to automate MC/DC test data generation. Thus, we present an approach to automatically generate MC/DC test data, from software module description written over a dedicated language. We introduce a new merging approach that provides high MC/DC coverage for the description, with only a little number of test cases. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=domain-specific%20language" title="domain-specific language">domain-specific language</a>, <a href="https://publications.waset.org/abstracts/search?q=MC%2FDC" title=" MC/DC"> MC/DC</a>, <a href="https://publications.waset.org/abstracts/search?q=test%20data%20generation" title=" test data generation"> test data generation</a>, <a href="https://publications.waset.org/abstracts/search?q=safety-critical%20software%20coverage" title=" safety-critical software coverage"> safety-critical software coverage</a> </p> <a href="https://publications.waset.org/abstracts/29445/automatic-mcdc-test-data-generation-from-software-module-description" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29445.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">441</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> Practical Methods for Automatic MC/DC Test Cases Generation of Boolean Expressions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sekou%20Kangoye">Sekou Kangoye</a>, <a href="https://publications.waset.org/abstracts/search?q=Alexis%20Todoskoff"> Alexis Todoskoff</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Barreau"> Mihaela Barreau</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Modified Condition/Decision Coverage (MC/DC) is a structural coverage criterion that aims to prove that all conditions involved in a Boolean expression can influence the result of that expression. In the context of automotive, MC/DC is highly recommended and even required for most security and safety applications testing. However, due to complex Boolean expressions that often embedded in those applications, generating a set of MC/DC compliant test cases for any of these expressions is a nontrivial task and can be time consuming for testers. In this paper we present an approach to automatically generate MC/DC test cases for any Boolean expression. We introduce novel techniques, essentially based on binary trees to quickly and optimally generate MC/DC test cases for the expressions. Thus, the approach can be used to reduce the manual testing effort of testers. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=binary%20trees" title="binary trees">binary trees</a>, <a href="https://publications.waset.org/abstracts/search?q=MC%2FDC" title=" MC/DC"> MC/DC</a>, <a href="https://publications.waset.org/abstracts/search?q=test%20case%20generation" title=" test case generation"> test case generation</a>, <a href="https://publications.waset.org/abstracts/search?q=nontrivial%20task" title=" nontrivial task"> nontrivial task</a> </p> <a href="https://publications.waset.org/abstracts/29442/practical-methods-for-automatic-mcdc-test-cases-generation-of-boolean-expressions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/29442.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">447</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> In vitro Cytotoxicity Study on Silver Powders Synthesized via Different Routes</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Otilia%20Ruxandra%20Vasile">Otilia Ruxandra Vasile</a>, <a href="https://publications.waset.org/abstracts/search?q=Ecaterina%20Andronescu"> Ecaterina Andronescu</a>, <a href="https://publications.waset.org/abstracts/search?q=Cristina%20Daniela%20Ghitulica"> Cristina Daniela Ghitulica</a>, <a href="https://publications.waset.org/abstracts/search?q=Bogdan%20Stefan%20Vasile"> Bogdan Stefan Vasile</a>, <a href="https://publications.waset.org/abstracts/search?q=Roxana%20Trusca"> Roxana Trusca</a>, <a href="https://publications.waset.org/abstracts/search?q=Eugeniu%20Vasile"> Eugeniu Vasile</a>, <a href="https://publications.waset.org/abstracts/search?q=Alina%20Maria%20Holban"> Alina Maria Holban</a>, <a href="https://publications.waset.org/abstracts/search?q=Carmen%20Mariana%20Chifiriuc"> Carmen Mariana Chifiriuc</a>, <a href="https://publications.waset.org/abstracts/search?q=Florin%20Iordache"> Florin Iordache</a>, <a href="https://publications.waset.org/abstracts/search?q=Horia%20Maniu"> Horia Maniu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Engineered powders offer great promise in several applications, but little information is known about cytotoxicity effects. The aim of the current study was the synthesis and cytotoxicity examination of silver powders using pyrosol method at temperatures of 600°C, 650°C and 700°C, respectively sol-gel method and calcinations at 500°C, 600°C, 700°C and 800°C. We have chosen to synthesize and examine silver particles cytotoxicity due to its use in biological applications. The synthesized Ag powders were characterized from the structural, compositional and morphological point of view by using XRD, SEM, and TEM with SAED. In order to determine the influence of the synthesis route on Ag particles cytotoxicity, different sizes of micro and nanosilver synthesized powders were evaluated for their potential toxicity. For the study of their cytotoxicity, cell cycle and apoptosis have been done analysis through flow cytometry on human colon carcinoma cells and mesenchymal stem cells and through the MTT assay, while the viability and the morphological changes of the cells have been evaluated by using cloning studies. The results showed that the synthesized silver nanoparticles have displayed significant cytotoxicity effects on cell cultures. Our synthesized silver powders were found to present toxicity in a synthesis route and time-dependent manners for pyrosol synthesized nanoparticles; whereas a lower cytotoxicity has been measured after cells were treated with silver nanoparticles synthesized through sol-gel method. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ag" title="Ag">Ag</a>, <a href="https://publications.waset.org/abstracts/search?q=cytotoxicity" title=" cytotoxicity"> cytotoxicity</a>, <a href="https://publications.waset.org/abstracts/search?q=pyrosol%20method" title=" pyrosol method"> pyrosol method</a>, <a href="https://publications.waset.org/abstracts/search?q=sol-gel%20method" title=" sol-gel method"> sol-gel method</a> </p> <a href="https://publications.waset.org/abstracts/25784/in-vitro-cytotoxicity-study-on-silver-powders-synthesized-via-different-routes" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25784.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">594</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> Generalized Rough Sets Applied to Graphs Related to Urban Problems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihai%20Rebenciuc">Mihai Rebenciuc</a>, <a href="https://publications.waset.org/abstracts/search?q=Simona%20Mihaela%20Bibic"> Simona Mihaela Bibic</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Branch of modern mathematics, graphs represent instruments for optimization and solving practical applications in various fields such as economic networks, engineering, network optimization, the geometry of social action, generally, complex systems including contemporary urban problems (path or transport efficiencies, biourbanism, & c.). In this paper is studied the interconnection of some urban network, which can lead to a simulation problem of a digraph through another digraph. The simulation is made univoc or more general multivoc. The concepts of fragment and atom are very useful in the study of connectivity in the digraph that is simulation - including an alternative evaluation of k- connectivity. Rough set approach in (bi)digraph which is proposed in premier in this paper contribute to improved significantly the evaluation of k-connectivity. This rough set approach is based on generalized rough sets - basic facts are presented in this paper. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=%28bi%29digraphs" title="(bi)digraphs">(bi)digraphs</a>, <a href="https://publications.waset.org/abstracts/search?q=rough%20set%20theory" title=" rough set theory"> rough set theory</a>, <a href="https://publications.waset.org/abstracts/search?q=systems%20of%20interacting%20agents" title=" systems of interacting agents"> systems of interacting agents</a>, <a href="https://publications.waset.org/abstracts/search?q=complex%20systems" title=" complex systems"> complex systems</a> </p> <a href="https://publications.waset.org/abstracts/77919/generalized-rough-sets-applied-to-graphs-related-to-urban-problems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77919.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">243</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> The Impact of Environmental Factors on the Water Quality of the Lakes in Bistrița Basin, Romania</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Alina%20Stanciu">Mihaela Alina Stanciu</a>, <a href="https://publications.waset.org/abstracts/search?q=Daniel%20Toma"> Daniel Toma</a> </p> <p class="card-text"><strong>Abstract:</strong></p> With a touristic and economic potential among the highest in our country, Neamț County has a large number of impressive storage lakes (Izvoru Muntelui – Bicaz, Bâtca Doamnei, Vaduri, Pângărați), with high hydrographic capacities, but also a diversity of biotopes and habitats. Being an area with frequent exceedances of environmental quality indicators, we analyzed in this work their impact on the water quality parameters in three of the most visited lakes of Neamț County: Bâtca Doamnei, Vaduri, and Pângărați. An additional reason is the risk of the water eutrophication process in these lakes, representing one of the first six most important pollution problems worldwide. During the research carried out over a period of four years (2020 – 2024), we identified the major sources of water pollution for the mentioned reservoirs. We analyzed the type of impact produced by each source separately, and we proposed preventiong and control measures detailed according to their action on water quality parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=ecosystem" title="ecosystem">ecosystem</a>, <a href="https://publications.waset.org/abstracts/search?q=environment" title=" environment"> environment</a>, <a href="https://publications.waset.org/abstracts/search?q=eutrophication" title=" eutrophication"> eutrophication</a>, <a href="https://publications.waset.org/abstracts/search?q=lakes" title=" lakes"> lakes</a>, <a href="https://publications.waset.org/abstracts/search?q=nutrients" title=" nutrients"> nutrients</a>, <a href="https://publications.waset.org/abstracts/search?q=pollution" title=" pollution"> pollution</a>, <a href="https://publications.waset.org/abstracts/search?q=water%20quality" title=" water quality"> water quality</a> </p> <a href="https://publications.waset.org/abstracts/188437/the-impact-of-environmental-factors-on-the-water-quality-of-the-lakes-in-bistrita-basin-romania" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/188437.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">29</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> Trends and Priorities for the Fishing Sector in the Republic of Moldova </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Munteanu%20Pila"> Mihaela Munteanu Pila</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Abstract The Republic of Moldova has a high potential for commercial growth of fish, due to its rich natural resources. Every year, national actions are implemented for the development and improvement of wetlands through acclimatization of hydrobionts, cleaning of adjacent waste areas and repopulation with valuable fish species. Due to aggressive environmental factors, anthropogenic factors, poaching or insufficient financial resources allocated to the authorities, there is a strong degradation of aquatic resources in the area. The main issue of the study is to identify priority areas for the development of fish farming in the area and maintain potential reserves to increase the efficiency of fish production in the pond. The rational operation of pond-type reservoirs will make it possible to maintain the breeding base of many fish species and will in future become a valuable source of local marketable products, in order to increase the productivity of fish in ponds and exploit the region's resources. The research looked at the problems that led to a decline in local fish production and identified a number of long-term measures needed to develop aquaculture. <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=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=Republic%20of%20Moldova" title=" Republic of Moldova"> Republic of Moldova</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=""></a>, <a href="https://publications.waset.org/abstracts/search?q=fisheries" title=" fisheries"> fisheries</a>, <a href="https://publications.waset.org/abstracts/search?q=" title=" "> </a>, <a href="https://publications.waset.org/abstracts/search?q=productivity" title=" productivity"> productivity</a> </p> <a href="https://publications.waset.org/abstracts/128164/trends-and-priorities-for-the-fishing-sector-in-the-republic-of-moldova" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128164.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">114</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> Particular Features of the First Romanian Multilingual Dictionaries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Mocanu">Mihaela Mocanu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Romanian multilingual dictionaries – also named polyglot, plurilingual or polylingual dictionaries, have known a slow yet constant development starting with the end of the 17th century, when the first such work is attested, to the present time, when we witness a considerable increase of the number of polyglot dictionaries, especially the terminological ones. This paper aims at analyzing the context in which the first Romanian multilingual dictionaries were issued, as well as and the organization and structure particularities of the first lexicographic works of this type. The irretrievable loss of some of these works as well as the partial conservation of others renders the attempt to retrace the beginnings of Romanian lexicography extremely difficult. The research methodology is part of a descriptive and analytical approach based on two types of sources, subject to contrastive analysis: the notes made by the initiators of lexicographic projects and the testimonies of their contemporaries, respectively, along with the specialized studies regarding the history of the old Romanian lexicography. The analysis of the contents has indicated that these dictionaries lacked a scientific apparatus in the true sense of the phrase, failed to obey unitary organizational criteria, being limited, most of the times, to mere inventories of words, where the Romanian term was assigned its correspondent in other languages. Motivated by practical reasons, the first multilingual dictionaries were aimed at the clerics their purpose being to ensure the translators’ fidelity towards the original religious texts, regarded as sacred. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Romanian%20lexicography" title="Romanian lexicography">Romanian lexicography</a>, <a href="https://publications.waset.org/abstracts/search?q=multilingual%20dictionary" title=" multilingual dictionary"> multilingual dictionary</a>, <a href="https://publications.waset.org/abstracts/search?q=terminology" title=" terminology"> terminology</a>, <a href="https://publications.waset.org/abstracts/search?q=language" title=" language"> language</a> </p> <a href="https://publications.waset.org/abstracts/46990/particular-features-of-the-first-romanian-multilingual-dictionaries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/46990.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">292</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> NENU2PHAR: PHA-Based Materials from Micro-Algae for High-Volume Consumer Products</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Enrique%20Moliner">Enrique Moliner</a>, <a href="https://publications.waset.org/abstracts/search?q=Alba%20Lafarga"> Alba Lafarga</a>, <a href="https://publications.waset.org/abstracts/search?q=Isaac%20Herraiz"> Isaac Herraiz</a>, <a href="https://publications.waset.org/abstracts/search?q=Evelina%20Castellana"> Evelina Castellana</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Mirea"> Mihaela Mirea</a> </p> <p class="card-text"><strong>Abstract:</strong></p> NENU2PHAR (GA 887474) is an EU-funded project aimed at the development of polyhydroxyalkanoates (PHAs) from micro-algae. These biobased and biodegradable polymers are being tested and validated in different high-volume market applications including food packaging, cosmetic packaging, 3D printing filaments, agro-textiles and medical devices, counting on the support of key players like Danone, BEL Group, Sofradim or IFG. At the moment the project has achieved to produce PHAs from micro-algae with a cumulated yield around 17%, i.e. 1 kg PHAs produced from 5.8 kg micro-algae biomass, which in turn capture 11 kg CO₂ for growing up. These algae-based plastics can therefore offer the same environmental benefits than current bio-based plastics (reduction of greenhouse gas emissions and fossil resource depletion), using a 3rd generation biomass feedstock that avoids the competition with food and the environmental impacts of agricultural practices. The project is also dealing with other sustainability aspects like the ecodesign and life cycle assessment of the plastic products targeted, considering not only the use of the biobased plastics but also many other ecodesign strategies. This paper will present the main progresses and results achieved to date in the project. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=NENU2PHAR" title="NENU2PHAR">NENU2PHAR</a>, <a href="https://publications.waset.org/abstracts/search?q=Polyhydroxyalkanoates" title=" Polyhydroxyalkanoates"> Polyhydroxyalkanoates</a>, <a href="https://publications.waset.org/abstracts/search?q=micro-algae" title=" micro-algae"> micro-algae</a>, <a href="https://publications.waset.org/abstracts/search?q=biopolymer" title=" biopolymer"> biopolymer</a>, <a href="https://publications.waset.org/abstracts/search?q=ecodesign" title=" ecodesign"> ecodesign</a>, <a href="https://publications.waset.org/abstracts/search?q=life%20cycle%20assessment" title=" life cycle assessment"> life cycle assessment</a> </p> <a href="https://publications.waset.org/abstracts/157868/nenu2phar-pha-based-materials-from-micro-algae-for-high-volume-consumer-products" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/157868.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">90</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> Radiation Protection Study for the Assessment of Mixed Fields Ionizing Radiation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Avram%20Irina">Avram Irina</a>, <a href="https://publications.waset.org/abstracts/search?q=Coiciu%20Eugenia-Mihaela"> Coiciu Eugenia-Mihaela</a>, <a href="https://publications.waset.org/abstracts/search?q=Popovici%20Mara-Georgiana"> Popovici Mara-Georgiana</a>, <a href="https://publications.waset.org/abstracts/search?q=Mitu%20Iani%20Octavian"> Mitu Iani Octavian</a> </p> <p class="card-text"><strong>Abstract:</strong></p> ELI-NP stands as a cutting-edge facility globally, hosting unique radiological setups. It conducts experiments leveraging high-power lasers capable of producing extremely brief 10 PW pulses on two fronts. Moreover, it houses an exceptional gamma beam system with distinctive spectral characteristics. The facility hosts various experiments across designated experimental areas, encompassing ultra-short high-power laser tests, high-intensity gamma beam trials, and combined experiments utilizing both setups. The facility hosts a dosimetry laboratory, which recently obtained accreditation, where the radiation safety group employs a host of different types of detectors for monitoring the personnel, environment, and public exposure to ionizing radiation generated in experiments performed. ELI-NP's design was shaped by radiological protection assessments conducted through Monte Carlo simulations. The poster exemplifies an assessment conducted using the FLUKA code in an experimental area where a high-power laser system is implemented, and the future diagnostic system for variable energy gamma beams will soon be operational. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=radiation%20protection" title="radiation protection">radiation protection</a>, <a href="https://publications.waset.org/abstracts/search?q=Monte%20Carlo%20simulation" title=" Monte Carlo simulation"> Monte Carlo simulation</a>, <a href="https://publications.waset.org/abstracts/search?q=FLUKA" title=" FLUKA"> FLUKA</a>, <a href="https://publications.waset.org/abstracts/search?q=dosimetry" title=" dosimetry"> dosimetry</a> </p> <a href="https://publications.waset.org/abstracts/179173/radiation-protection-study-for-the-assessment-of-mixed-fields-ionizing-radiation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/179173.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">74</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 Ultimate Challenge of Teaching Nursing</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Crin%20N.%20Marcean">Crin N. Marcean</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20A.%20Alexandru"> Mihaela A. Alexandru</a>, <a href="https://publications.waset.org/abstracts/search?q=Eugenia%20S.%20Cristescu"> Eugenia S. Cristescu</a> </p> <p class="card-text"><strong>Abstract:</strong></p> By definition, nursing means caring. It is a profession within the health care sector focused on the care of individuals, families, and communities so they may attain, maintain or recover optimal health and quality of life. However, there is a subtle difference between the two: nursing is widely considered as an art and a science, wherein caring forms the theoretical framework of nursing. Nursing and caring are grounded in a relational understanding, unity, and connection between the professional nurse and the patient. Task-oriented approaches challenge nurses in keeping care in nursing. This challenge is on-going as professional nurses strive to maintain the concept, art, and act of caring as the moral centre of the nursing profession. Keeping the care in nursing involves the application of art and science through theoretical concepts, scientific research, conscious commitment to the art of caring as an identity of nursing, and purposeful efforts to include caring behaviours during each nurse-patient interaction. The competencies, abilities, as well as the psycho-motor, cognitive, and relational skills necessary for the nursing practice are conveyed and improved by the nursing teachers’ art of teaching. They must select and use the teaching methods which shape the personalities of the trainers or students, enabling them to provide individualized, personalized care in real-world context of health problems. They have the ultimate responsibility of shaping the future health care system by educating skilful nurses. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=art%20of%20nursing" title="art of nursing">art of nursing</a>, <a href="https://publications.waset.org/abstracts/search?q=health%20care" title=" health care"> health care</a>, <a href="https://publications.waset.org/abstracts/search?q=teacher-student%20relationship" title=" teacher-student relationship"> teacher-student relationship</a>, <a href="https://publications.waset.org/abstracts/search?q=teaching%20innovations" title=" teaching innovations"> teaching innovations</a> </p> <a href="https://publications.waset.org/abstracts/30152/the-ultimate-challenge-of-teaching-nursing" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/30152.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">497</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">34</span> Study on the Presence of Protozoal Coinfections among Patients with Pneumocystis jirovecii Pneumonia in Bulgaria</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Nina%20Tsvetkova">Nina Tsvetkova</a>, <a href="https://publications.waset.org/abstracts/search?q=Rumen%20Harizanov"> Rumen Harizanov</a>, <a href="https://publications.waset.org/abstracts/search?q=Aleksandra%20Ivanova"> Aleksandra Ivanova</a>, <a href="https://publications.waset.org/abstracts/search?q=Iskra%20Rainova"> Iskra Rainova</a>, <a href="https://publications.waset.org/abstracts/search?q=Nina%20Yancheva-Petrova"> Nina Yancheva-Petrova</a>, <a href="https://publications.waset.org/abstracts/search?q=Dimitar%20Strashimirov"> Dimitar Strashimirov</a>, <a href="https://publications.waset.org/abstracts/search?q=Raina%20Enikova"> Raina Enikova</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Videnova"> Mihaela Videnova</a>, <a href="https://publications.waset.org/abstracts/search?q=Eleonora%20Kaneva"> Eleonora Kaneva</a>, <a href="https://publications.waset.org/abstracts/search?q=Iskren%20Kaftandjiev"> Iskren Kaftandjiev</a>, <a href="https://publications.waset.org/abstracts/search?q=Viktoria%20Levterova"> Viktoria Levterova</a>, <a href="https://publications.waset.org/abstracts/search?q=Ivan%20Simeonovski"> Ivan Simeonovski</a>, <a href="https://publications.waset.org/abstracts/search?q=Nikolay%20Yanev"> Nikolay Yanev</a>, <a href="https://publications.waset.org/abstracts/search?q=Georgi%20Hinkov"> Georgi Hinkov</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The Pneumocystis jirovecii (P. jirovecii) and protozoan of the genera Acanthamoeba, Cryptosporidium, and Toxoplasma gondii are opportunistic pathogens that can cause life-threatening infections in immunocompromised patients. Aim of the study was to evaluate the coinfection rate with opportunistic protozoal agents among Bulgarian patients diagnosed with P. jirovecii pneumonia. Thirty-eight pulmonary samples were collected from 38 patients (28 HIV-infected) with P. jirovecii infection. P. jirovecii DNA was detected by real-time PCR targeting the large mitochondrial subunit ribosomal RNA gene. Acanthamoeba was determined by genus-specific conventional PCR assay. Real-time PCR for the detection of a Toxoplasma gondii and Cryptosporidium DNA fragment was used. Pneumocystis DNA was detected in all 38 specimens; 28 (73.7%) were from HIV-infected patients. Three (10,7%) of them were co-infected with T. gondii and 1 (3.6%) with Cryptosporidium. In the group of non-HIV-infected (n=10), Cryptosporidium DNA was detected in an infant (10%). Acanthamoeba DNA was not found in the tested samples. The current study showed a relatively low rate of coinfections of Cryptosporidium spp./T. gondii and P. jirovecii in the Bulgarian patients studied. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=coinfection" title="coinfection">coinfection</a>, <a href="https://publications.waset.org/abstracts/search?q=opportunistic%20protozoal%20agents" title=" opportunistic protozoal agents"> opportunistic protozoal agents</a>, <a href="https://publications.waset.org/abstracts/search?q=Pneumocystis%20jirovecii" title=" Pneumocystis jirovecii"> Pneumocystis jirovecii</a>, <a href="https://publications.waset.org/abstracts/search?q=pulmonary%20infections" title=" pulmonary infections"> pulmonary infections</a> </p> <a href="https://publications.waset.org/abstracts/151450/study-on-the-presence-of-protozoal-coinfections-among-patients-with-pneumocystis-jirovecii-pneumonia-in-bulgaria" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/151450.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">154</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> ISMARA: Completely Automated Inference of Gene Regulatory Networks from High-Throughput Data</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Piotr%20J.%20Balwierz">Piotr J. Balwierz</a>, <a href="https://publications.waset.org/abstracts/search?q=Mikhail%20Pachkov"> Mikhail Pachkov</a>, <a href="https://publications.waset.org/abstracts/search?q=Phil%20Arnold"> Phil Arnold</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreas%20J.%20Gruber"> Andreas J. Gruber</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Zavolan"> Mihaela Zavolan</a>, <a href="https://publications.waset.org/abstracts/search?q=Erik%20van%20Nimwegen"> Erik van Nimwegen</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Understanding the key players and interactions in the regulatory networks that control gene expression and chromatin state across different cell types and tissues in metazoans remains one of the central challenges in systems biology. Our laboratory has pioneered a number of methods for automatically inferring core gene regulatory networks directly from high-throughput data by modeling gene expression (RNA-seq) and chromatin state (ChIP-seq) measurements in terms of genome-wide computational predictions of regulatory sites for hundreds of transcription factors and micro-RNAs. These methods have now been completely automated in an integrated webserver called ISMARA that allows researchers to analyze their own data by simply uploading RNA-seq or ChIP-seq data sets and provides results in an integrated web interface as well as in downloadable flat form. For any data set, ISMARA infers the key regulators in the system, their activities across the input samples, the genes and pathways they target, and the core interactions between the regulators. We believe that by empowering experimental researchers to apply cutting-edge computational systems biology tools to their data in a completely automated manner, ISMARA can play an important role in developing our understanding of regulatory networks across metazoans. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=gene%20expression%20analysis" title="gene expression analysis">gene expression analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=high-throughput%20sequencing%20analysis" title=" high-throughput sequencing analysis"> high-throughput sequencing analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=transcription%20factor%20activity" title=" transcription factor activity"> transcription factor activity</a>, <a href="https://publications.waset.org/abstracts/search?q=transcription%20regulation" title=" transcription regulation"> transcription regulation</a> </p> <a href="https://publications.waset.org/abstracts/147333/ismara-completely-automated-inference-of-gene-regulatory-networks-from-high-throughput-data" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/147333.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">65</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> The Intonation of Romanian Greetings: A Sociolinguistics Approach</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Anca-Diana%20Bibiri">Anca-Diana Bibiri</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Mocanu"> Mihaela Mocanu</a>, <a href="https://publications.waset.org/abstracts/search?q=Adrian%20Turcule%C8%9B"> Adrian Turculeț</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In a language the inventory of greetings is dynamic with frequent input and output, although this is hardly noticed by the speakers. In this register, there are a number of constant, conservative elements that survive different language models (among them, the classic formulae: <em>bună ziua! </em>(<em>good afternoon!</em>)<em>, bună seara! (good evening!</em>)<em>, noapte bună!</em> (<em>good night!</em>)<em>, la revedere! </em>(<em>goodbye!</em>) and a number of items that fail to pass the test of time, according to language use at a time (<em>ciao!</em>, <em>pa!</em>, <em>bai!</em>). The source of innovation depends both of internal factors (contraction, conversion, combination of classic formulae of greetings), and of external ones (borrowings and calques). Their use imposes their frequencies at once, namely the elimination of the use of others. This paper presents a sociolinguistic approach of contemporary Romanian greetings, based on prosodic surveys in two research projects: AMPRom, and SoRoEs. Romanian language presents a rich inventory of questions (especially partial interrogatives questions/WH-Q) which are used as greetings, alone or, more commonly accompanying a proper greeting. The representative of the typical formulae is <em>Ce mai faci? </em>(<em>How are you?</em>), which, unlike its English counterpart <em>How do you do?</em>, has not become a stereotype, but retains an obvious emotional impact, while serving as a mark of sociolinguistic group. The analyzed corpus consists of structures containing greetings recorded in the main Romanian cultural (urban) centers. From the methodological point of view, the acoustic analysis of the recorded data is performed using software tools (GoldWave, Praat), identifying intonation patterns related to three sociolinguistics variables: age, sex and level of education. The intonation patterns of the analyzed statements are at the interface between partial questions and typical greetings. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=acoustic%20analysis" title="acoustic analysis">acoustic analysis</a>, <a href="https://publications.waset.org/abstracts/search?q=greetings" title=" greetings"> greetings</a>, <a href="https://publications.waset.org/abstracts/search?q=Romanian%20language" title=" Romanian language"> Romanian language</a>, <a href="https://publications.waset.org/abstracts/search?q=sociolinguistics" title=" sociolinguistics"> sociolinguistics</a> </p> <a href="https://publications.waset.org/abstracts/47011/the-intonation-of-romanian-greetings-a-sociolinguistics-approach" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/47011.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">337</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> Applied Spatial Mapping and Monitoring of Illegal Landfills for Deprived Urban Areas in Romania</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=%C8%98erc%C4%83ianu%20Mihai">Șercăianu Mihai</a>, <a href="https://publications.waset.org/abstracts/search?q=Aldea%20Mihaela"> Aldea Mihaela</a>, <a href="https://publications.waset.org/abstracts/search?q=Iacoboaea%20Cristina"> Iacoboaea Cristina</a>, <a href="https://publications.waset.org/abstracts/search?q=Luca%20Oana"> Luca Oana</a>, <a href="https://publications.waset.org/abstracts/search?q=Nenciu%20Ioana"> Nenciu Ioana</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The rise and mitigation of unauthorized illegal waste dumps are a significant global issue within waste management ecosystems, impacting disadvantaged communities. Globally, including in Romania, many individuals live in houses without legal recognition, lacking ownership or construction permits, in areas known as "informal settlements." An increasing number of regions and cities in Romania are struggling to manage their illegal waste dumps, especially in the context of increasing poverty and lack of regulation related to informal settlements. One such informal settlement is located at the end of Bistra Street in Câlnic, within the Reșița Municipality of Caras Severin County. The article presents a case study that focuses on employing remote sensing techniques and spatial data to monitor and map illegal waste practices, with subsequent integration into a geographic information system tailored for the Reșița community. In addition, the paper outlines the steps involved in devising strategies aimed at enhancing waste management practices in disadvantaged areas, aligning with the shift toward a circular economy. Results presented in the paper contain a spatial mapping and visualization methodology calibrated with in situ data collection applicable for identifying illegal landfills. The emergence and neutralization of illegal dumps pose a challenge in the field of waste management. These approaches, which prove effective where conventional solutions have failed, need to be replicated and adopted more wisely. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=informal%20settlements" title="informal settlements">informal settlements</a>, <a href="https://publications.waset.org/abstracts/search?q=GIS" title=" GIS"> GIS</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20dumps" title=" waste dumps"> waste dumps</a>, <a href="https://publications.waset.org/abstracts/search?q=waste%20management" title=" waste management"> waste management</a>, <a href="https://publications.waset.org/abstracts/search?q=monitoring" title=" monitoring"> monitoring</a> </p> <a href="https://publications.waset.org/abstracts/184576/applied-spatial-mapping-and-monitoring-of-illegal-landfills-for-deprived-urban-areas-in-romania" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/184576.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">87</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">30</span> Innovative Technologies for Aeration and Feeding of Fish in Aquaculture with Minimal Impact on the Environment</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vasile%20Caunii">Vasile Caunii</a>, <a href="https://publications.waset.org/abstracts/search?q=Andreea%20D.%20Serban"> Andreea D. Serban</a>, <a href="https://publications.waset.org/abstracts/search?q=Mihaela%20Ivancia"> Mihaela Ivancia</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper presents a new approach in terms of the circular economy of technologies for feeding and aeration of accumulations and water basins for fish farming and aquaculture. Because fish is and will be one of the main foods on the planet, the use of bio-eco-technologies is a priority for all producers. The technologies proposed in the paper want to reduce by a substantial percentage the costs of operation of ponds and water accumulation, using non-polluting technologies with minimal impact on the environment. The paper proposes two innovative, intelligent systems, fully automated that use a common platform, completely eco-friendly. One system is intended to aerate the water of the fish pond, and the second is intended to feed the fish by dispersing an optimal amount of fodder, depending on population size, age and habits. Both systems use a floating platform, regenerative energy sources, are equipped with intelligent and innovative systems, and in addition to fully automated operation, significantly reduce the costs of aerating water accumulations (natural or artificial) and feeding fish. The intelligent system used for feeding, in addition, to reduce operating costs, optimizes the amount of food, thus preventing water pollution and the development of bacteria, microorganisms. The advantages of the systems are: increasing the yield of fish production, these are green installations, with zero pollutant emissions, can be arranged anywhere on the water surface, depending on the user's needs, can operate autonomously or remotely controlled, if there is a component failure, the system provides the operator with accurate data on the issue, significantly reducing maintenance costs, transmit data about the water physical and chemical parameters. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bio-eco-technologies" title="bio-eco-technologies">bio-eco-technologies</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=fish" title=" fish"> fish</a> </p> <a href="https://publications.waset.org/abstracts/138644/innovative-technologies-for-aeration-and-feeding-of-fish-in-aquaculture-with-minimal-impact-on-the-environment" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/138644.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">150</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">&lsaquo;</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=Ruxandra%20Mihaela%20Botez&page=2" rel="next">&rsaquo;</a></li> </ul> </div> </main> <footer> <div id="infolinks" 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