bluuebunny/crossref_metadata_2025 huggingface dataset:
Optimization of EMC Filter for a Variable Speed Drive System in Electric Aircraft
Authors: MILOUDI Houcine , MILOUDI Mohamed , BERMAKI Mohammed Hamza , GOURBI Abdelkader , BENDAOUD Abdelber
Published: January 2024

In recent years, static converters are in constant evolution, and they have occupied an increasing role within aeronautical on-board networks. This development results in an increase in the power density of the onboard network and a reduction in the volume of the components. This development in electrical technologies
creates problems related to electromagnetic pollution. To avoid polluting their environments, the power electronics designer will have to provide effective devices and means to mitigate the levels of emissions from their equipment. This work focuses on electromagnetic compatibility (EMC) problems appearing in power converters on board future more electric aircraft. The work deals with the aircraft EMC issue, and then the reduction of electromagnetic pollution from a variable speed drive system. With the standards used in the aeronautical fields, type DO 160D, the optimization approach consists in bringing the level of emissions of the current generated towards the network and the load Induction motor) below the EMC standard in the whole range of frequencies 150 kHz -30 MHz.
Assessment of the Ecological Footprint of Industrial Processes: An Integrated Approach to Life Cycle Analysis
Authors: PETROVA Vessela
Published: January 2024

The ecological footprint is crucial in assessing industrial processes and is essential for understanding their impact. The integrated approach to life cycle assessment is essential for studying these footprints. The scientific paper describes a comprehensive approach to assessing the environmental footprint of industrial operations using life cycle analysis. The study's goal is to examine the environmental implications of various stages in the life cycle of industrial products or processes. A life cycle analysis framework is provided, which encompasses all processes from raw material extraction to product manufacture and consumption, as well as waste and recycling possibilities. Each phase is evaluated in terms of energy use, material consumption, and environmental impact. Concrete steps for implementing an integrated approach to life cycle analysis in industrial environments are presented, as are examples of the methodology's implementation in various areas of production. The article emphasises the need for incorporating environmental considerations into decision-making processes and assists organisations in identifying opportunities for optimising and reducing their environmental footprint.
Validation of the Ruees-Voight Homogenisation Model for Glass Powder-Based Eco-Concretes
Authors: ABDELDJALIL Benbakhti , ABDELMOUTALIB Benfrid , MOHAMED Chatbi , RABIE Harrat Zouaoui , MOHAMED Bachir Bouiadjra
Published: January 2024

In view of the ecological challenge that our planet has been facing in recent years, environmental protection has become an issue for researchers and scientists in all fields, through the reduction of discharges from factories and the recycling of waste. Among the most common solid waste is glass waste, which is attracting the attention of recycling specialists in various sectors, particularly construction, by incorporating it into the composition of concrete and reusing it as building materials. The aim of our work is to use the RUEES-Voigt homogenization model to estimate the values of the mechanical properties of an eco-concrete based on glass powder and to compare them with the results found experimentally for a replacement of (5% , 10% ,15%,20 ,25%,30%,35%) of the quantity of cement by glass powder with a particle diameter of 2.79 µm. Very interesting experimental results were obtained which validate the effective RUEES-Voigt model proposed, which opens up the possibility of using other homogenization models.
Seismic Hazard Map of ASEAN Countries towards Risk Assessment and Sustainability of Structures and Infrastructures
Authors: HARITH Noor Sheena Herayani , ADNAN Azlan
Published: January 2024

This study contains the most recent seismic hazard map of Southeast Asia. This area is located to the south of the Eurasian plate. The Ring of Fire that surrounds the region makes it one of the most active in terms of earthquakes and volcanoes. Malaysia, Indonesia, Thailand, Singapore, the Philippines, Myanmar, Vietnam, Laos, Cambodia, and Brunei are among the countries being studied. The goals of this project are to provide Peak Ground Acceleration (PGA) values for all regions in ASEAN countries, and then to create seismic zoning maps for these countries so that zones with non-seismic regions can be identified and zones with no special steel reinforcement-detailing requirements can be specified. The final step is to create design response spectra. Based on each nation's most recent body of literature, the PGA hazard map is created. There are two maps that need to be created, one for 10% and one for 2% probability of exceeding. The PGA contours of all the compiled maps were then reconstructed, and the baseline colours were compared to an Indonesia seismic hazard map. The maximum PGA value for Southeast Asia is as high as 0.8g at 10% and 2.0g at 2% probability of exceedance, respectively, whereas the minimum PGA value is typically equal to 0.0g at both 10% and 2% probability of exceedance. The design response spectrum distribution of the stable with moderate earthquake region from 0 to 4 s (including West Malaysia, Sabah and Sarawak of East Malaysia) and the distribution of spectra for active earthquake regions including Indonesian cities (including Acheh, Padang and Palu) are plotted. Then, the design response spectra for the selected cities in regions of moderate seismicity and active earthquakes are integrated.
Enhancing Driver Comfort and Control: A Proposal for Customizable Gas and Brake Pedal Sensitivity
Authors: KARACALI Huseyin , CEBEL Efecan , DONUM Nevzat
Published: January 2024

Despite spectacular advancements in automotive industry, a significant gap exists within the domain of driver-vehicle interaction like the fixed response force of the accelerator and brake pedals. Nowadays, although there are studies on safety especially for pedals, the issue of customizing the pedal hardness has not become widespread. In this study, a method for customizing the accelerator and brake pedals is suggested. The proposed system improves driving comfort and experience by allowing drivers to customize their preferred pedal level. Utilizing an accessible tuner for stepwise adjustments, drivers can fine-tune the pedal response force until it matches their comfort and driving style. Moreover, our system includes numbered preset buttons, which enable drivers to save their preferred force profiles. This feature not only accommodates the unique preferences of individual drivers but also eases transitions between different drivers sharing the same vehicle. By just a push of a button, drivers can recall their saved profiles, ensuring consistent comfort and control across different driving sessions. By incorporating this system to the car, we aim to revolutionize driver-vehicle interactions, moving away from the traditional standardized approach towards a personalized driving experience. This novel solution holds promise in expanding driving comfort, improving vehicle control, and potentially enhancing driving safety. Furthermore, it creates new avenues for research into the effects of tailored pedal forces on driving efficiency and fatigue, thus shaping the future trajectory of automotive design.
Adapted FMECA for Supporting Maintenance Actions
Authors: LAMPREIA Suzana , VAIRINHOS Valter , LOBO Victor , MORGADO Teresa
Published: January 2024

In a Navy ship the knowledge of the equipment’s and systems state are a pillar and a necessity for operation success. Nowadays equipment’s are monitored with multiple sensors, and data are storage and processed through automatic systems. However, the data is not always useful, and most of the times it is never putted into useful data. The maintenance management in the organization understudy are made based in the maintenance management system and based in the opportunity and attributed missions considering good sense decision of the responsible engineers. The actual systems allow decision based on registered data. With this study, we intend to develop a FMECA risk analysis considering a selection of a navy ship equipment’s. The FMECA methodology will be adapted to include various severity parameters and data from equipment’s condition control. The result of adapted FMECA will give the risk of the equipment operation. For that, considering some maintenance action doesn´t occurred in time, it would be defined some strategies of mitigating the risk. With this methodology, we intend to build a support decision making system for the maintenance management based on risk.
Assessing the Effects of Alluvial Transport in the Kizilirmak River on Dams with Local, Photogrammetric and Remote Sensing Methods
Authors: ALKAN Oyku , ALZUBADE Muntaha Kassim , ALKAN Mehmet Nurullah
Published: January 2024

Naturally transported sand, clay, and gravel-like blocks by rivers cause a decrease in water flow and flow velocity. Additionally, uncontrolled disposal of waste materials into the riverbed increases adverse effects and endangers natural life. Over time, the alluvium generated by natural and external factors in river and creek beds leads to flood risks that pose a significant threat to life and property. These sediments, known as alluvium, accumulate in favorable locations in valleys and form alluvial beds with spread movement to broader areas. In Turkey, interventions in river branches and creek beds, as well as insufficient preventive measures, have kept floods a hot topic. To eliminate these issues, it is crucial for every organization to take comprehensive measures and increase environmental awareness by addressing similar areas in large projections. The Kızılırmak River, originating from the Kızıldag slopes in the İmranlı district of Sivas province and passing through the Çorum province before reaching the Black Sea at Bafra Cape, also harbors alluvial risks and adverse effects. It holds significant importance for energy production with 12 dams and hydroelectric power plants (HES) on the river. Additionally, the Pirinçli Hydroelectric Power Plant, with a transmission structure of 13,756 meters between Dodurga district of Çorum province and Güvercinlik and Kumbaba Villages, plays a vital role in electricity production in the region. The Pirinçli HES is located downstream of the Obruk Dam constructed by the State Hydraulic Works (D.S.I.) on the Kızılırmak River. It is known that a significant portion of the sediment accumulation between Güvercinlik Dam and Kumbaba Dam occurred before the construction of the Obruk Dam. Hence, preventing risks that could lead to environmental adversities is of paramount importance. In this study, a combined fieldwork was conducted using different methods to determine the areas where sediments accumulated and the alluvial material being transported cuts off the flow velocity of the Kızılırmak River and causes accumulations between the Güvercinlik Dam and Kumbaba Dam. For this purpose, terrestrial measurements, photogrammetric and remote sensing methods were combined and evaluated together to ensure the integrity of the obtained data.
New Generation Space Vehicle Operations in the United Arab Emirates – An Airspace and Risk Assessment
Authors: LEHMANN Oliver , EL-JABI Ramy , WEBSTER Kirk , RACHDI Aya
Published: January 2024

Air Transport is a highly technocentric and rapidly evolving industry. While certain legacy systems persist, more advanced technological concepts for carrying payloads and passengers further, faster, and more efficiently place this particular industry at the forefront of the most cutting-edge research and development initiatives in the fields of autonomous systems, artificial intelligence, cybersecurity, and advanced communication, navigation, surveillance applications. While drone technologies and applications have been widely and comprehensively addressed in recent years, the incipient hypersonic and suborbital commercial transport sector has received disproportionately less academic attention. Although certain suborbital passenger transport concepts such as the German Aerospace Center’s SpaceLiner are proposed for the more distant future, other concepts have reached operational status. A recent addition into the foray has been Blue Origin and its vertically launched New Shepherd autonomous vehicle. The United Arab Emirates, an increasingly active spacefaring nation, has signaled its interest. Among the nation’s highly ambitious short and long-term initiatives is the idea of launching space tourism flights from its own soil. Blue Origin, along with other candidates, has emerged as a contender to operate its New Shepard vehicle from a UAE-based spaceport. This paper explores how Next Generation Space Vehicle Operations (NGSVO) could impact a highly dense and compact airspace when operating from and to a UAE spaceport. Preliminary results suggest that under certain circumstances, NGSVOs may indeed affect existing Air Traffic Management (ATM) operations and pose increased safety risks while leading to higher fuel consumption and larger carbon dioxide footprints of regular air traffic. To establish a benchmark for future comparisons, the current study applies traditional airspace segregation methods to the UAE airspace to accommodate a specific type of NGSVO. Operational gains may be deduced by comparing the results of future studies applying more advanced ATM concepts to those reported in the current study.
Verification the Stressed State of the Ships’ Hull during Separate Water Descent
Authors: DENEV Yordan
Published: January 2024

This study evaluates the stressed state of the ship's hull during its welding of separate water descent parts. Separate descent of ship hull is applicable for small and medium sized ship yards (SME), where shipbuilding facilities have restrictions on length and lifting capacity. In the paper different scenarios are developed for verification. It is assumed that separately launched sections of the ship's hull are free of heels and trim, i.e., pre-ballasted, and any initial deformation in connected structures has been eliminated during the stage of hull assembly. In different scenarios, there are varying factors directly related to the strength of the ship, its construction materials, as well as those that have an impact on the production processes. Two of most used welding methods in ship building are analyzed- submerged arc welding and gas metal arc welding. The analysis shows that the stressed state of the ship's hull closely depends on the initial tense state, thickness of plate elements and welding method.
Validation of the Heuristic Model for SMART Management in a Medium-Sized Industrial Enterprise
Authors: TEMELKOVA Miglena , BAKALOV Iliyan
Published: January 2024

This article presents the results of the approbation of a Heuristic model for SMART management in a medium-sized industrial enterprise in a specific economic entity. The main practical steps and the effects achieved as result of the introduction of the model in the selected industrial enterprise are summarized. The results achieved at different stages and the analytical assessments, the improvements, the restructuring and other strategic and operational activities leading to effective changes in the operation of the industrial unit are presented. Conclusions and inferences have been made, the most important of which is that the Heuristic Model for SMART management in the medium-sized industrial enterprise is also applicable in small industrial enterprises having a complex and multi-layered structural architecture. In order to comply with the regulation of the European Union for the protection of personal data, the name of the company is not indicated in this article, and the provided data is publicly available.
Geophysical Techniques for Monitoring of Integrated Mine Waste Storage Facility: Case Study of Southeastern Bulgaria
Authors: TOMOVA Maya
Published: January 2024

The extraction of mineral resources usually generates varying amounts of extractive waste, which require appropriate management. Extractive waste management is complicated and difficult process. It encompasses a lot of actions and many different competences. Here must be taken into account the mining excavation method, processing methods, beneficiation and overall mineral treatment. The results obtained from these study provide an important basis for the quantification and management of environmental impacts of the Integrated mine waste facility (IMWF) at the “Ada Tepa” gold mine. The aim of this research is to monitoring the process of internal water drainage into constructed cells of the facility. This task is performed using geophysical method based on electrical resistivity measurements made on the ground surface. Electrical resistivity tomography is commonly used to solve mining and engineering issues, because it is efficient and environmentally sound. This study demonstrates the efficiency of electrical resistivity tomography in detecting the saturated zones in the IMWF.
Effect of Cuo-Water Nanofluid on the Thermal - Hydraulic Behavior of Triangular Corrugated Channel
Authors: BENCHABI Rahima , LANANI Ahsene
Published: January 2024

The aim of this study is to model and simulate laminar flow and heat transfer in a triangular-corrugated duct containing a CuO-water nanofluid. Note that a temperature is imposed on the walls, the considered Reynolds number (Re) and the nanoparticle volume fraction range from 100 to 800 and 0 to 5% respectively. The basic equations were discretized using the finite volume method. Dynamic and thermal fields were obtained, as well as the Nusselt number (Nu). In addition, the influence of certain parameters (Re, nanoparticle volume fraction) was taken into account. It can be observed that the mean Nu increases with increasing Re. Furthermore, raising the nanofluid volume fraction further enhances the heat transfer. For numerical resolution, we used the FLUENT code. Finally, we note that the results are in excellent accord with experimental ones published in the literature.
Comparison of the Effects of Vegetable Oils such as Castor and Canola Oil and Polyol Esters on the Metalworking Performance of Ti-6Al-4VAlloy by Tapping Torque Method
Authors: KAVUT Kubra , GULEN-TOM Hanife , OZPERCIN Tugce
Published: January 2024

Ti-6Al-4V material is an alloy of particular interest for engineering applications in a wide range of industries, especially aerospace and medicine, due to its outstanding corrosion resistance, favorable strength-to-weight ratio and biocompatibility properties. Due to the low thermal conductivity and high chemical reactivity of this alloy, its machinability is quite limited and is therefore referred to as the "difficult-to-cut" alloy. When the problems encountered in the processing of Ti-6Al-4V alloy are evaluated, the preparation of the appropriate cutting environment, ensuring optimum cutting parameters and the use of appropriate coolant are the priorities in overcoming these problems. Vegetable oil and polyol esters are biodegradable base fluids that can be used as a sustainable alternative to petroleum-derived oils in many lubricant applications. In this study, the effects of castor and canola oils and trimethylolpropane trioleate (TMPTO) and trimethylolpropane trioleate complex (TMPCX), neopentyl glycol (NPG) and pentaerythritol tetra-oleate (PE-TO) type polyol esters on the machining performance of Ti-6Al-4V alloy were investigated using the Tapping Torque test method. In the tests performed on Ti-6AL-4V, it was determined that the tapping performances of TMP-TO, TMP-CX, PE-TO and castor oil were close to each other and gave the best results. It has also been determined that the tapping performance of canola oil is lower than these oils. NPG-DO gave a striking result for Ti-6AL-4V and the tapping performance was found to be very low.
Small-Size Nanoparticles and Nanofluids Fabrication via Plasma Arc
Authors: GELENIDZE David , GELASHVILI Gela
Published: January 2024

The main issue with nanotechnology is the rapidly expanding fields of application, which necessitate heavy investment in research and development, and complicated devices to produce (
Numerical Study of the Effect of the Ejection Angle on the Cooling Performance of a High-Pressure Gas Turbine
Authors: REHAB-BEKOUCHE Aya , BELAMADI Riyadh
Published: January 2024

In modern gas turbines, the purge flow plays an important role in improving the performance of the gas turbine, as it is adapted against the problem of the ingestion of hot gases in the inter-disc cavity of the turbine. The performance of this purge flow is necessarily influenced by some geometrical and physical parameters. This paper presents a 3D numerical study on the influence of the ejection angle on the cooling performance in a high pressure transonic gas turbine with the presence of the cavity. Five inclination cavity angles are compared (𝝓 = 30°, 45°,60°,75°and 90°) by using ANSYS Fluent, a steady flow Reynolds average Navier-Stokes equations are solved, and the turbulence model k-ω SST has been chosen based on comparison of the distribution of velocity and heat transfer convective coefficient with experimental results in a previous work. It was seen that that cooling is limited to the suction side because of the non-uniform pressure distribution of the main flow and the high pressure of the stagnation point. The optimal configuration was determined for an ejection angle of 30°.
Acceleration/Deceleration Detection System - Creation of Driving Behavior Profiles for Efficiency
Authors: KARACALI Huseyin , CEBEL Efecan , DONUM Nevzat
Published: January 2024

: Driving behavior is a term used to describe deliberate or accidental activities while a driver drives a vehicle. Driving behavior data is useful for efficiency in the automotive domain, including insurance companies, aftermarkets, production planning, and vehicle servicing. Therefore, the aim of this study is to develop and investigate an Acceleration/Deceleration(A/D) detection system. A/D can be measured using a 3-axis accelerometer. The accelerometer on the vehicle cannot precisely reflect the driver's actual A/D behavior due to its undetermined orientation. Additionally, the accelerometer detects sudden movements. In order to prevent unexpected acceleration and deceleration changes and to achieve the desired driving behavior, a gyroscope has been incorporated into the system. Thus, a driving aid system was developed using the combined data from the gyroscope and accelerometer. Moreover, the A/D detection system reads and combines the vehicle's CAN messages to more stabilize the system. As a result, driving behavior data during vehicle trips is collected and recorded to inform the driver how to have a more efficient driving experience and as well as making the related companies aware of the trips that have been made. Furthermore, they can be combined with service feedback and support the manufacturer's production strategy to increase efficiency.
Probabilistic Seismic Damage for Existing RC Buildings Used for Educational Purposes
Authors: BENDEHIBA Sabeur , EL-AMINE BOURDIM Sidi Mohammed , RODRIGUES Hugo
Published: January 2024

The objective of this research is to evaluate the seismic vulnerability of a collection of 55 reinforced concrete educational establishments, comprising approximately 516 buildings, located within the urban area of Mostaganem. Among them, 328 constructions were built in compliance with Algerian seismic regulations (Date > 1980 = 328 constructions), while 188 constructions were constructed prior to the implementation of seismic design codes (Date < 1980 = 188 constructions). This classification corresponds to the introduction and enforcement of the regulations following a significant earthquake in Chlef (El Asnam) in 1980.Using the RISK-UE lm1 method, the vulnerability index was determined through visual inspections of each building. An on-site inventory form was utilized to identify the main sources of seismic vulnerability, considering factors such as building typology, structural system, code adherence, maintenance condition, number of floors, plan and elevation irregularities, soil characteristics, and more. This approach allowed for the prioritization of buildings based on their specific vulnerabilities. The results obtained from this methodology were integrated into a Geographic Information System (GIS) environment, enabling a comprehensive understanding of the seismic behavior of the structures and facilitating the estimation of seismic risk levels. This integration also supports simulations and efforts to implement concrete preventive measures aimed at strengthening existing educational buildings, thereby reducing the potential negative consequences of future earthquakes.
Numerical Modeling and Simulation of a Poroelastic Journal Bearing Lubricated By Nanofluids with Couple-Stresses
Authors: LAHMAR Mustapha , ATHMANIA Ammar , BOU-SAID Benyebka
Published: January 2024

In this paper we present a numerical simulation of a porous journal bearing considering the fluid film – poroelastic matrix interaction and the non-Newtonian rheological behavior of nanolubricant consisting of base fluid and nanoparticles (NPs). The flow of nanolubricant in the bearing clearance space is described by the Vijay Kumar Stokes micro-continuum theory which considers the characteristic size of nanoparticles such as fullerenes dispersed in a base oil. The flow of the nanolubricant in the porous medium is modeled by the modified Darcy’s law where the Beavers–Joseph slip conditions are applied at the fluid film-porous matrix interface. The deformation of the fluid-film porous matrix interface due to hydrodynamic pressure is calculated by using a simplified analytical thin elastic liner model. The hydrodynamic behavior of lubricating film is governed by the modified Reynolds equation obtained from the momentum, moment of momentum, and mass conservation laws using the classical Reynolds derivation process. The bearing porosity is introduced into the governing modified Reynolds equation by means of the Morgan-Cameron approximation. The steady-state analysis shows that for an imposed operating eccentricity, the load capacity increases with the characteristic size and the concentration of NPs while the attitude angle, the leakage flow rate, and the coefficient of friction decrease. On the other hand, the permeability decreases the hydrodynamic pressure, the load capacity, and the leakage flow rate, and increases the attitude angle and the coefficient of friction.
Roadmap for Simulating Quantum Circuits Utilising IBM’s Qiskit Library: Programming Approach
Authors: JARADAT Yousef , ALIA Mohammad , MASOUD Mohammad , MANSRAH Ahmad , JANNOUD Ismael , ALHEYASAT Omar
Published: January 2024

This paper explains the roadmap for running quantum circuit programs based on the Qiskit library in quantum simulators as well as real cloud-based IBM quantum computers. Qiskit is a free and open-source software development platform based on the Python programming language that is used in quantum programming. Qiskit acts as a link between quantum computing’s theoretical foundations and the practical aspects of programming and experimentation. It also allows users to experiment with and develop quantum algorithms, as well as simulate and execute them on simulators and real-world cloud-based quantum devices. It also simplifies the quantum programming process and allows a diverse range of people to participate in the exciting world of quantum computing. The paper, on the other hand, provides the mathematical foundation for analyzing quantum circuits and algorithms using linear algebra principles, as they provide the tools needed to describe and manipulate quantum states and operations. Furthermore, the paper shows quantum circuit design and implementation using real Qiskit codes.
Using RDF Models to Create Knowledge Bases in the Kazakh Language: Comparison with Other Methods
Authors: MUKANOVA Assel , ABDIKALYK Gulnazym , NAZYROVA Aizhan , DAULETKALIYEVA Assem
Published: January 2024

Currently, there is a rapid development of information technologies, the amount of information on the Internet is growing very fast and it is becoming increasingly difficult to find the necessary information. A search using keywords does not give results adequate to the meaning of the information sought. Therefore, the creation of a technology for designing intelligent question answering systems in the Kazakh language based on the presentation, processing and extraction of knowledge is a very actual problem, since it is in such a system that the linguistic and semantic relationships between the texts of the request and the answer can be taken into account. This research paper focuses on the integration of the Resource Description Framework (RDF) model, a semantic web technology, and provides a detailed evaluation of data mining techniques in Kazakh. The paper examines many Kazakh language data collection methods such as online scraping, community collaboration and translation. It also explores the function of RDF models in organizing knowledge, connecting data points and adding semantic richness to datasets. The paper discusses linguistic features and challenges unique to the Kazakh language and emphasizes the need to address these challenges with domain-specific data. The need for thorough cleaning, annotation and data quality assurance is emphasized to guarantee the reliability and use of the collected datasets. Within global communications and technology, the study emphasizes the importance of languages other than English and examines how semantic web technologies can improve data representation and knowledge retrieval. The study lays the groundwork for future initiatives to address the shortage of datasets in languages with fewer resources and to create semantic web technologies for language diversity.
Relationship between Nusselt and Rayleigh Numbers in Natural Convection
Authors: LANANI Ahsene , BENCHABI Rahima
Published: January 2024

When studying heat transfer in laminar or turbulent flow, the aim is to maximize heat transfer, using for example corrugated channels; nanofluids or hybrid nanofluids, etc.; to determine the factors that influence the thermal and hydraulic performance of the used equipment and to determine the relationships that may exist between heat transfer efficiency and these various variables; hence the study of the relationships between these various factors. The findings can be analyzed by using tables, graphs or correlations. The objective of the current paper is focused on the last approach. In addition, we are attempting to determine the influence of the physical parameter Rayleigh number (Ra) on thermal and hydraulic behavior, using the FLUENT calculation code, on the one hand, and to validate the correlation obtained, based on a statistical model, on the other hand. We have also validated that our findings are in excellent accord with those of prior work involving this statistical method.
Decoupled Control of a Multi-Machines System Fed by a Single Multilevel Inverter Six-Phase
Authors: BESSAAD Taieb , KHELIFI-OTMANE Khelifa , TALEB Rachid , BENBOUALI Aderrahmen
Published: January 2024

The use of multiphase motors offers an additional possibility of independent control of a set of series-connected motors that are supplied from a single inverter.This paper presents independent vector control of six-phase two-motor drive machine series-connected fed by a seven-level six-phase inverter. Via appropriate phase transposition during the series connection of the stator windings, the fully decoupled control of the two machines is possible. The control system multi-machines classic based on vector control with conventional inverters comprise various problems are related to low power quality, pressure on motor bearing, etc. However, decoupling control of a series six-phase two-motor drive machine by a seven-level six-phase inverter is developed. A simulations result clearly shows the possibility of independent vector control of the two machines, although a single seven-level six-phase inverter is used as the supply.
Numerical and Statistical Analysis of the Influence of Damage and Temperature on EMI for Structural Health Monitoring
Authors: ABDALLAH Bouzitouna , MOHAMED Djemana
Published: January 2024

Structural health monitoring (SHM) is a process of implementing a system to monitor the structural condition of a structure and assess the structural health. SHM is used to detect damage, predict future performance, and monitor the overall structural health of a structure. Electromechanical impedance (EMI)-based SHM is a non-destructive evaluation (NDE) technique that can be used to detect damage in structures by measuring the changes in the electrical impedance of a piezoelectric transducer that is bonded to the structure. EMI has several advantages over other NDE techniques, including being a passive, local, and relatively inexpensive technique. However, one of the challenges of using EMI for structural health monitoring (SHM) is the effect of damage and temperature on the impedance of the piezoelectric transducer. As the damage and temperature changes, the impedance of the transducer will also change. This can make it difficult to detect small damage if the damage and temperature co-exist on the same structure (aluminum plate). This research presents a numerical and statistical study to investigate the effects of damage and temperature on EMI-based SHM. The numerical model uses ANSYS software to simulate an aluminum plate at different temperatures. The findings have shown that both damage and temperature have a significant effect on the impedance of the transducer. However, the study has also demonstrated that it is still possible to detect structural damage using EMI even under varying damage and temperature conditions. This underscores the robustness of EMI-based damage detection methodologies in practical applications.
Algorithm of the Heuristic Model for SMART Management in a Medium-Sized Industrial Enterprise
Authors: TEMELKOVA Miglena , BAKALOV Iliyan
Published: January 2024

The present article synthesizes and describes a 9-step algorithm of a heuristic model for SMART management in a medium-sized industrial enterprise. The need for such a model is related both to the unpredictability of an industrial entity, and to the increasing competition on the basis of innovations, speed and efficiency of manufacturing between the industrial enterprises. This requires the generation, on the basis of research and analysis, of an algorithm of a model integrating a heuristic, as well as a mathematical, management and information-and-technological toolset. The architecture of the algorithm is based on some core fundaments, which determine the activities and development of a medium-sized industrial enterprise, and goes through the following nine stages: researching a medium-sized industrial enterprise and its productiom process, content-related description, containing the dependencies and the properties of the elements of the relation «production – management» in an medium-sized industrial enterprise, decomposition of a medium-sized industrial enterprise to subsystems, and of production to subprocesess and operations, forming a mathematical model through mathematical ratios expressing the links between the parameters of the production process and the borderline and initial conditions, forming an algorithmic model of data base code, creating strict procedures, determining the relations between the parameters of the production process and the borderline and initial conditions, forming an heuristic model of empirical rules and procedures, standards, analogies, expert examinations providing information about the potential development of the correlations between the parameters of the production process and the borderline and initial conditions, forming an information-and-technological model on the basis of connected into a network devices (computers, machines, sensors, etc.), determining a relational system of data exchanged between the parameters of the production process and the borderline and initial conditions, choosing manageable parameters, which should be representative, related to the target function, and also sensitive, meaningful, measurable, related to the bottlenecks in the production process and easily described, and the last stage – specifying the model.
"La Margarita preciosa y mercader amante", una comedia inédita del padre Pedro Salas
Authors: Enguix Ricardo
Published: January 2024

El objetivo de este artículo es realizar un estudio preliminar de La Margarita preciosa y mercader amante, comedia atribuida al dramaturgo jesuita Pedro Salas, conservada de forma manuscrita e inédita.
Un testimonio desconocido de los "Discursos sobre el Eclesiastés" de Arias Montano. Algunas aportaciones a la tradición textual
Authors: Carabias Orgaz Miguel
Published: January 2024

Doy a conocer un nuevo testimonio de los Discursos sobre el Eclesiastés, obra en castellano atribuida a Benito Arias Montano. Se trata de una copia manuscrita del siglo XVIII que viene a compensar la escasez de testimonios que de este tratado se han conservado. Entre otras cosas, permite reforzar algunos argumentos relativos a la autoría y contribuye a la fijación del texto en previsión de una futura nueva edición crítica.
El "Alarcos" de Friedrich Schlegel, ¿un drama a la calderoniana?
Authors: Pacheco Irene
Published: January 2024

Al calor del interés por la cultura y las letras hispanas que crece en Alemania desde la segunda mitad del siglo xviii, nacen piezas dramáticas inspiradas en ambientes o personajes españoles. Ejemplos de ello son Clavijo (1774) de Goethe, o Ponce de León (1804) de Brentano. En algunos de los estudios fundamentales sobre el calderonismo alemán romántico, se alude al Alarcos de Friedrich Schlegel como una tragedia compuesta bajo el influjo calderoniano, sin más profundización. A partir de ahí, este artículo investiga la relación de esta obra de Schlegel con Calderón y la literatura española, para determinar que esta va más allá del componente temático. El Alarcos de Schlegel, además de recuperar la leyenda hispana del conde Alarcos, fue una pieza innovadora y controvertida porque imitó la forma polimétrica del teatro barroco español. Schlegel trató de proyectar en su pieza la convicción romántica de la imbricación intrínseca entre forma y contenido, aspecto que vio encarnado en el teatro barroco español. Por tanto, ante la ausencia de un testimonio crítico que explique la interpretación que el Romanticismo alemán hizo de la forma del teatro del Siglo de Oro, el Alarcos de Schlegel contribuye a llenar ese vacío.
Un nuevo caso de refundición: de "La prueba de los ingenios" a "Hacer remedio el dolor"
Authors: Castrillo Alaguero Javier
Published: January 2024

La producción dramática de Agustín Moreto representa uno de los casos más llamativos del Siglo de Oro español, puesto que gran parte de sus obras se basa en la reescritura de comedias anteriores. En este artículo se analiza un nuevo caso de refundición, esta vez de una pieza colaborada, Hacer remedio el dolor, que reescribe un texto anterior de Lope de Vega, La prueba de los ingenios. Por lo tanto, a lo largo del trabajo se argumentará esta circunstancia y se profundizará en las similitudes y divergencias más destacadas entre las dos comedias mencionadas.
Nuevas pruebas estilométricas para negar la autoría cervantina del "Entremés de los romances"
Authors: Ruiz Urbón Cristina
Published: January 2024

En este trabajo ofrecemos una serie de análisis cuantitativos que avalan la autoría no cervantina del Entremés de los romances, basados en la comparación de ese texto con treinta y dos entremeses del Siglo de Oro español, de diez autores distintos, entre los que se encuentran los ocho entremeses indubitados del autor del Quijote.
La ficción pastoril en Portugal: noticia de "Olympo de pastores" de António do Vale de Morais (1632)
Authors: Alvarez-Cifuentes Pedro
Published: January 2024

Se presenta una revisión del género pastoril en lengua portuguesa y se da noticia de la novela inédita Olympo de pastores, prozas, & verços (1632) de António do Vale de Morais, un libro manuscrito (aparentemente autógrafo) que se conserva en la Biblioteca Nacional de Portugal (BNP) bajo la signatura n.º 11691. También se ofrecen nuevos datos sobre la biografía y la producción literaria de António do Vale de Morais (fl. 1635), un autor prácticamente desconocido en la actualidad, y se valora el interés de Olympo de pastores en el contexto de las letras portuguesas del siglo XVII.
Lara Garrido, "La poesía de la contemplación. Relectura de la 'Carta para Arias Montano' de Francisco de Aldana"
Authors: Alonso Miguel Álvaro
Published: January 2024

Reseña de José Lara Garrido, La poesía de la contemplación. Relectura de la "Cartapara Arias Montano" de Francisco de Aldana, Madrid, Universidad San Dámaso, 2023, 258 pp.ISBN: 9788417561659.
Szervestrágyázás hatása extenzív gyep hozamára és talajfaktor értékeire
Authors: Csízi István , Varga Krisztina , Halász András
Published: January 2024

The effect of different rates of organic fertilizer was investigated on a natural grassland with solonyec soil conditions at the Karcag Research Institute in the second year after application. Of the mature sheep manure treatments applied at 0-10-15-20 t/ha, the 20 t/ha dose was shown to result in higher dry matter yields. In addition, the 20 t/ha dose of organic manure was shown to stimulate soil life, as supported by measurements of carbon dioxide emissions, and to help better conserve soil moisture.
Az évjárat hatásának pontosítása feltétlen juhlegelők koratavaszi növényállomány fejlettségére
Authors: Csízi István , Varga Krisztina , Halász András
Published: January 2024

The feasibility of first grazing of extensive sheep pastures was investigated by monitoring the height of grassland in the spring of 2022 and 2023 at the Karcag Research Institute, focusing on the effect of vintage in this manuscript. For 6 grassland plots with different parameters, potentially suitable for early spring sheep grazing, in a meadow on solonyec soil with no level of inputs due to environmental subsidies, we refined soil temperature, soil moisture and height of grassland vegetation at the same time of year. For both years, it was concluded that it is justified to start grazing sheep on the fallow grassland and the pasture forest.
Reproduced in webtoon storytelling using 'dragon' Aspects and Meaning of Inheritance and Variation of the Dragon’s Cultural Archetype: Focusing on the webtoon
Authors:   The Academy of Real Korean History, Lee Chae Young
Published: January 2024

In this study, we tried to examine the aspects and characteristics of dragon character storytelling, focusing on the webtoon , which expresses the cultural archetype of 'dragon' among k-webtoons.
As a result of the study, first, we looked at how the traditional perception and imagination of dragons, which have been handed down through literature and previous research, are described or represented. Through this, Korea's unique perception and imagination of dragons existed, and it was possible to confirm the common point of China's perception of dragons and related cultures and the independent point of Korea's unique imagination of dragons.
Second, through the analysis of the dragon character storytelling in , various dragon characters appear in , each with different characteristics and personalities, but there are also common elements. In addition, the webtoon  partially inherits the image of the dragon, a cultural archetype of Korea and other countries, but also combines the storytelling elements that can be found in modern cultural contents such as movies and animations as well as the artist's new creation and Western dragon image. We could see that it was being used. Third, We tried to explore the development aspect of the central narrative, which is a theme that runs through the seasons in webtoons, and the meaning of the orientation of this narrative. Establishing a relationship between dragons and human can be a prospect for a dystopian future prediction of symbiosis and growth through the pursuit of coexistence between humans and non-humans, and it is meaningful in that it is a perspective and recognition that can solve various current problems.
Responsabilidade social corporativa no futebol e sua influência na relação entre clube profissional e comunidade local
Authors: Nishida Eduardo , Demajorovic Jacques , Morais Dafne Oliveira Carlos de
Published: January 2024

Objetivo: propor um modelo de análise da relação entre clube de futebol profissional e comunidade local, com enfoque na Responsabilidade Social Corporativa (RSC).
Metodologia: revisão sistemática da literatura de 49 artigos científicos sobre RSC no futebol publicados no período de 2011 a abril de 2022.
Originalidade: a partir dos anos 1990, o futebol inicia um processo de industrialização no qual a tomada de decisão passa a ser pautada por interesses comerciais, acarretando o distanciamento do clube com a comunidade local. Desafios éticos recentes envolvendo a modalidade demandam maior comprometimento das Organizações Esportivas de Times Profissionais (OETP) com a agenda de desenvolvimento sustentável, normalmente atribuída aos programas de RSC. Entretanto, as investigações enfocam seu caráter instrumental e debruçam-se pouco sobre as ações orientadas à comunidade, o Esporte para o Desenvolvimento (EPD) e a mobilização social.
Resultados: sugere-se que um dos propósitos da RSC seja a reconstrução dos laços entre clube e comunidade, cujo processo demonstra-se multidimensional (econômico, político-integrativo e ético-emocional).
Contribuições teóricas: ampliar o corpo de estudos brasileiros sobre a RSC no futebol, em um contexto político-econômico que aumenta a pressão por mudanças profundas em sua estrutura de governança.
Contribuições práticas: propor um modelo capaz de guiar o planejamento de ações de RSC, baseado em princípios de sustentabilidade e do EPD, despertando sua atenção para os aspectos que podem desencadear a mobilização social.
Analysis of Students' Mathematical Reasoning Ability in Learning Realistic Mathematics Education in terms of self-regulation of quadrilateral material
Authors: Uswatun hasanah Uswatun , Wijayanti Dyana , Kusmaryono Imam
Published: January 2024

Penelitian ini memiliki tujuan untuk menggambarkan penalaran siswa kelas VII pada materi segiempat dengan pendekatan RME ditinjau dari self-regulation. Kajian ini menggunakan metode kualitatif deskriptif. Terdapat 6 responden yang dijadikan subjek dalam penelitian. Dalam penelitian yang dilakukan, triangulasi (angket, tes dan wawancara) dipakai sebagai teknik pengumpulan data.  Hasil penelitian menunjukkan bahwa (1) Siswa dengan tingkat self-regulation tinggi mempunyai penalaran matematis tinggi yaitu siswa dapat mencapai semua indikator penalaran matematis (2) Siswa dengan tingkat self-regulation sedang mempunyai penalaran matematis sedang yaitu tidak semua siswa dapat memenuhi semua indikator. Untuk soal kedua siswa hanya dapat memenuhi kemampuan mengajukan dugaan (3) Siswa dengan tingkat self-regulation rendah memiliki penalaran matematis rendah yaitu siswa hanya dapat memenuhi beberapa indikator salah satunya siswa hanya memenuhi indikator melakukan dugaan untuk soal kedua. Bagi siswa yang mempunyai penalaran matematis sedang dan rendah agar lebih meningkatkan pemahaman terkait materi maupun soal. Hal ini bisa dilakukan dengan membiasakan mengaitkan masalah dalam kehidupan sehari-hari.