bluuebunny/crossref_metadata_2025 huggingface dataset:
Techno-environmental Simulations for Solar Energy-Powered Seawater Reverse Osmosis Desalination for a Hyper Arid Coastal Region
Authors:   Renewable Energy Department, Energy and Building Research Center, Kuwait Institute for Scientific Research., Aldei Sara , Alshayji Khawla ,   2Chemical Engineering Department, College of Petroleum and Engineering, Kuwait University, Aleisa Esra
Published: November 2022

This study investigates the efficiency of a solar-powered seawater desalination plant (DP) using reverse osmosis for an arid coastal region. The solar models are investigated using local meteorological data, including direct, diffused and global irradiance. The meteorological data are obtained using local typical meteorological data set collected from a ground weather station. The PVsyst simulation tool is used to model a grid-connected solar PV system utilizing three photovoltaic (PV) technologies: thin-film, monocrystalline, and polycrystalline. Three scenarios were considered: restricted area, daily water production and design capacity. The optimum configuration for the restricted area scenario at the seawater DP location considered is an on-grid thin-film module (170 W) with a tilt angle of 20° and an inverter unit of 2000 kW. The solution module area is 15,248 m2. The annual electricity production will be approximately 4251.1 MWh/y, which represents only 3.1% of the DP demand. Thin-films produce higher annual electricity than monocrystalline and polycrystalline silicon by 8.3% and 5.9%, respectively, but require 15.9% and 5.7% more space than monocrystalline and polycrystalline silicon, respectively. For Shuwaikh DP, a 30 MIGD DP will require a PV system with a capacity of 120 MWp at 30° tilt angles and 60 inverters. The design environmental impact was assessed using life cycle assessment (LCA). The carbon footprint will decrease from 7.3 x10-5 to 1.8 x10-5 (kg CO2 equivalent), for the 30 MIGD production. The fossil fuel depletion will decrease by approximately 80%. However, the large number of solar panels and the significant total ground area required for the 30 MIGD. The solar array of 1,531,054 m2 will adversely affect the urban land occupation impact category by 84% and will increase metal depletion by 37%.The response surface optimization indicates that the optimal performance in the coastal region for power desalination plants is achieved when using a thin-film at a tilt angle of 20 o.
Localized Depth of Galvanic Corrosion at Dissimilar Metal Welding A508/Inconel 182/316L
Authors:   Department of Mechanical Engineering, National Taiwan University of Science and Technology, No.43, Keelung Rd., Sec.4, Da'an Dist., Taipei City 10607, Taiwan, Wang Chaur-Jeng , Kusdiyarto Prihatno ,   Department of Mechanical Engineering, National Taiwan University of Science and Technology, No.43, Keelung Rd., Sec.4, Da'an Dist., Taipei City 10607, Taiwan, Chen Chen-Yu ,   Department of Mechanical Engineering, National Taiwan University of Science and Technology, No.43, Keelung Rd., Sec.4, Da'an Dist., Taipei City 10607, Taiwan
Published: November 2022

Recently, efforts have been made to develop the use of dissimilar metal welding in industrial components. Pressurized water reactors (PWR) in nuclear power plants frequently use dissimilar metal welding (DMW) in their primary water systems (NPP). The selection of the combination of stainless steel and low alloy steel is adjusted to the working conditions of work in high-temperature environments. Nickel-based Inconel 82/182 alloy is used as a weld filler in the GTAW method of joining to produce A508/Inconel-182/316L dissimilar welds with variations in the immersion time of the material at high temperatures. The depth of galvanic corrosion related to morphology using an optical microscope and SEM, changes in potential and current density using a potentiodynamic polarization test, and depth of galvanic corrosion using surface profiler (α -step) were thoroughly investigated. The results showed that low alloy steel A508 generally suffered from corrosion attacks. Still, the most severe corrosion attack was in the weld joint interface area of low alloy steel A508/Inconel 182 due to the influence of galvanic corrosion. These symptoms will not be seen if observed on the outside of the surface only, but severe symptoms occur on the inside of the weld joint A508/Inconel 182. Finally, there has been a change in the shape of the gap and concave (depth of galvanic corrosion effect) of the welded joint interface between Inconel 182 and low alloy steel A508 because the effects of galvanic corrosion with changes in potential, current density, and immersion time of dissimilar welded materials.
Contribution of the standard penetration test SPT to the design of pile foundations in sand– Practical recommendations
Authors:   Department of Civil Engineering, Faculty of Technology, University of Blida1, Blida, 09000, Algeria., Ali Bouafia
Published: November 2022

The objective of this article is to present original research work results on the contribution of the standard penetration test (SPT) to the design and analysis of pile foundations on the basis of the interpretation of a database of full-scale pile loading tests undertaken in sandy soils, with the aim to provide practical recommendations to the designers. The article encompasses three parts, the first one presents a detailed comparative study of 10 currently used methods of design on the basis of the SPT, assessed according to their predictive capability of the axial bearing capacity, within a database consisting of 46 axial pile loading tests carried out in 27 sites in the United Arab Emirates. The second part presents some experimental findings related to the critical (or creep) vertical load, whereas the third part highlights the concept of the reference pile settlement and its application to the limit state design of pile foundations.
Analysis and Simulation of a Wideband Dual-Band Balanced-to-Unbalanced Gysel Power Divider Using Coupled Lines
Authors:   Department of Electrical Engineering, College of Engineering and Petroleum, Kuwait University, Kuwait., Alazemi Abdullah J. , Almesri Fatma H. ,   Department of Electrical Engineering, College of Engineering and Petroleum, Kuwait University, Kuwait.
Published: November 2022

In this article, theoretical analysis and simulation of a wideband dual-band balanced to unbalanced Gysel power divider using coupled lines are proposed for dual-band WiFi applications. The proposed power divider consists of three coupled line sections, stepped-impedance stub, two grounded resistors, and a dual-band phase inverter. The dual-band phase inverter is used to perform the differential functionality at the input port. The use of the coupled lines results in a wide frequency range, compact size, flexible structure, and more freedom in choosing the design parameters. The closed-form equations and the ABCD matrix are derived using even and odd mode analysis and precise electrical design parameters are determined. The power divider was simulated at 2.4 GHz and 5 GHz, and great performance had been achieved; all ports are matched at the two frequencies with a 10-dB input fractional bandwidth of 45.83% at 2.4 GHz and 21.7% at 5 GHz. The isolation between output ports was more than 15 dB within the frequency bandwidth and the power was divided equally between output ports with the same phase. In addition, a perfect common mode suppression was reached, and the differential functionality was a success. Moreover, the device is simulated using Keysight-ADS and the results agreed well with the derived equations results. The device can be used for any application requiring dual-band WiFi connectivity.
Sustainable assessment of air quality in school buildings in Saudi Arabia
Authors:   Department of Civil Engineering, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia., Deeb Yousif I. , Alqahtani Fahad K. ,   Department of Civil Engineering, College of Engineering, King Saud University, P. O. Box 800, Riyadh 11421, Saudi Arabia.
Published: November 2022

The aim is to study the influence of outdoor air on the indoor air quality (IAQ) of an elementary school located near the roadside in Riyadh, Kingdom of Saudi Arabia (KSA). The air quality was asses at two locations of the school (inside and outside). The concentrations of particulate matter (PM) 1.0, 2.5, and 10, carbon monoxide (CO), and nitrogen dioxide (NO2) were determined with the help of Air Quality Egg (Kickstarter Company, USA). The factors that can influence the air quality (working and non-working hours, arriving/leaving hours, weekends, and dust storms) were also considered during observations. The methodology followed in this study was according to the standard of "ISO 12103-1 AI Test Dust; ASHRAE". The findings of this study clearly show that traffic-related air pollution (TRAP) affected the IAQ of the school near the roadside. During the working and arrival/leaving hours, PM (1.0 2.5, 10.0) inside the classroom remains below the ambient air quality standards of WHO, EPA, and Saudi limits. Likewise, CO and NO2 levels were lower than the reported limit with the maximum value of 0.176, 0.078 ppb, and 48.69, 46.22 ppb at working and arrival/leaving hours. However, indoor/outdoor ratios were found to be > 1.0 at working hours of CO and all parameters of NO2, indicating strong relation between occupants and surrounding human activities. During dust storms, indoor and outdoor average values remain highest due to natural climatic conditions. The study's findings can be applied to epidemiological investigations of children's exposure to PM, CO, and NO2 due to TRAP, as well as the formation and implementation of remedial action to protect children's health.
Experimental Investigation of Refinery Waste Cake for its Potential use as Biofuel Source
Authors:   Department of Chemical Engineering, University of Gujrat, Gishkori Sophia Nawaz , Abbas Ghulam ,   Department of Chemical Engineering, University of Gujrat, Shah Aqeel Ahmad ,   Department of Materials and Metallurgy Engineering, NED-UET Karachi, Rahman Sajjad Ur ,   3, Haider Muhammad Salman ,   Department of Chemical Engineering, University of Gujrat, Nisar Fahid ,   Department of Chemical Engineering, University of Gujrat
Published: November 2022

Biofuel is a type of oil which is formed through anaerobic digestion process. It is frequently used as a transformation of biomasses into useful energy product. Thermal degradation is an effective technique for the characterization of waste cake for biofuel production. This research work was focused on the characterization of waste cake collected from oil refinery. The sample was analyzed for its calorific value, proximate value and elemental analysis. The results reflected that HHV of dry waste cake was higher (22.5MJ/kg) than wet waste cake (20.5MJkg) and commonly used sugar can bagasse (17.88MJ/kg). The percentage composition of carbon (49.8 percent, 40.8), hydrogen (7.9 percent, 6.0 percent), nitrogen (2.8 percent, 1.9 percent), sulphur (1.9 percent, 0.5 percent), and oxygen content (37.6 percent, 40.4 percent) were shown in the elemental analysis of dry waste cake versus moist cake. When it comes to the thermal degradation behaviour of dry and wet cake in TGA, wet cake has greater moisture contents (68.50 percent) than dry cake (40.1 percent). Wet cake has a low volatile matter (30.9%) and a high volatile matter (30.9%). (14.3 percent). Similarly, the percentage of ash in dry cake (17.3 percent) increases while it decreases in moist cake (5.11 percent). In contrast to the foregoing, the percent fraction of carbon in wet cake increased (12.09%) whereas it decreased in dry cake (11.7 percent).
Design and Experimental Investigation of Thermosiphoning Heat Transfer through Nanofluids in Compound Parabolic Collectors
Authors:   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Shehryar Muhammad , Ali Muzaffar ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Ali Furqan ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Ahmad Shaharyar ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Ahmad Daniyal ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Ahmed Shahzeb ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan, Iftikhar Obaid ,   Department of Mechanical Engineering, University of Engineering and Technology, Taxila, Taxila 47050, Pakistan
Published: November 2022

The limited availability of fossil fuels, as well as its negative ecological repercussions, has prompted humanity to seek other renewable technologies. One of the obvious options is solar energy, especially for energy deficient and solar rich countries like Pakistan. Flat plate, evacuated tube, and parabolic trough collectors are among the primary solar thermal collectors being employed. However, energy saving can be further enhanced by applying the thermosiphoning concept. Therefore, in the current study, an experimental analysis of a thermosiphoning-based heat transfer mechanism with two different nanofluids (Fe2O3 and Al2O3) in a compound parabolic trough collector (CPC) is presented. Initially, a numerical analysis is performed through ANSYS to determine fluid flow under free convection at a certain temperature gradient. Afterwards, a laboratory-scale thermosiphoning experimental setup is developed under controlled conditions. Finally, the same phenomena is applied in CPC and analysis is performed under real climate conditions of Taxila, Pakistan. The highest numerical flow rate attained with Fe2O3 was 9.3 mL/s, according to the research. In outdoor setup, 10.78 mL/s was the highest flow rate achieved. With some variation, theoretical and analytical results were confirmed with prior studies. As a result, using nanofluids and thermosiphon to lower a pump's mechanical strain can considerably improve the efficiency of the solar thermal system.
Experimental analysis of dewpoint indirect evaporative cooler operating with solar panel
Authors:   Energy Engineering Department, University of Engineering and Technology, Taxila, Pakistan, Rasheed Sabir , Ali Muzaffar ,   Mechanical Engineering Department, University of Engineering and Technology, Taxila, Pakistan, Ali Hassan ,   Mechanical Engineering Department, De Montfort University, Dubai, Sheikh Nadeem Ahmed ,   Mechanical Engineering Department, International Islamic University, Islamabad, Pakistan, Hussain Abid ,   Mechanical Engineering Department, University of Engineering and Technology, Taxila, Pakistan
Published: November 2022

M-cycle (Maisotsenko cycle) based indirect evaporative cooling system can significantly enhance the natural ecosystem. The operating cost of dewpoint indirect evaporative cooler (Dewpoint-IEC) is low for space air cooling systems. Dewpoint-IEC is inexpensive, energy efficient, and ecological friendly. This study illustrates the experimental evaluation of Dewpoint-IEC working with varying operating conditions. The system designed for up to 1 Ton cooling capacity of the system which has coefficient of performance and energy efficiency ratio up to 6 and 20. The experimentation of Dewpoint-IEC is investigated in terms of the relative humidity and ambient temperature. The results indicate that the effectiveness of the Dewpoint-IEC system is increased with decrease the relative humidity and increase the ambient air temperature. The highest experimental values of wet bulb and dewpoint effectiveness of the system is 1.11 and 0.76. The maximum resulting values of EER, COP, and cooling capacity is 19, 6.1, and 3.3 kW, respectively. Based on experimental results, the system is a feasible option in hot summer days. Moreover, the power consumption of the Dewpoint-IEC is 70 W which can be achieved by combining the system with solar panels. So, current research also shows that Dewpoint-IEC integrated with solar panel recommends off-grid solution as well.
Visualization of Heliostat Field of Solar Thermal Tower Power Plant Using Virtual Reality (VR) Technologies
Authors:   Department of Mechanical Engineering, University of Engineering and Technology Lahore, Lahore 54890, Pakistan., Mahboob Kamran , Awais Qasim ,   Electrical Engineering Department, GIFT University, Gujranwala 52250, Pakistan., Awais Muhammad ,   Department of Mechanical Engineering, University of Engineering and Technology Lahore, Lahore 54890, Pakistan., Naseem Ahsan ,   Department of Mechanical Engineering, University of Engineering and Technology Lahore, Lahore 54890, Pakistan., Ullah Safi ,   Research Center for Modeling & Simulation, National University of Sciences and Technology (NUST), Islamabad 44000, Pakistan., Khan Awais ,   Department of Mechanical Engineering, University of Engineering and Technology Lahore, Lahore 54890, Pakistan.
Published: November 2022

An important part of future global energy depends on the development of the solar industry. To date, we have noticed the shift from fossil fuels energy towards renewable energy. The past decade has shown significant progress in computer science and CAD is increasingly used for design and development. Visualization of the data generated from the models in the CAD program plays an important role in the creation of state-of-the-art designs. An important limitation during the design phase is the visualization of three-dimensional geometry. This article attempts to illustrate the use of VR technologies in solar thermal power plant development. This article analyzes various strategies and methods for the visualization of CAD models in virtual reality. Android phone interfaces with a desktop computer, as well as head movement control strategies, are discussed. It is concluded that VR technologies can help with visualization, as well as in the development of the field of solar thermal power plants, having minimal design-related issues.
A Review of Learning-Based SLAM Approaches of Autonomous Unmanned Vehicles (AUV)
Authors:   Department of Electrical Engineering, University of Gujrat, Pakistan., Rauf Abdul , Irshad M Jehanzeb ,   Department of Electrical Engineering, University of Gujrat, Pakistan., Mehmood Zubair ,   Department of Electrical Engineering, University of Gujrat, Pakistan., Wasif Muhammad ,   Department of Electrical Engineering, University of Gujrat, Pakistan., Aslam Javaid ,   Department of Electrical Engineering, University of Gujrat, Pakistan., Miran Sajjad ,   Department of Electrical Engineering, University of Gujrat, Pakistan.
Published: November 2022

Artificial Intelligence (AI) is becoming a hot topic in the field of robotic research in the last few decades. Autonomous Unmanned Vehicles (AUV) are being used for different tasks like rescue, search, monitoring, aerial operations as well as underwater operations even AUV can aid where human reachability is impossible. Localization, tracking, and mapping are fundamentals of an autonomous system. The main problem of AUV, which attracts researchers, is the simultaneous localization and mapping, where no external positioning source is available like GPS. There are many proposed techniques and algorithms which can be used to solve this problem of AUV like GPS (Global Positioning System), Motion Capture System (MCS), Visual System, etc. with limitations. Some probabilistic solutions like Graph SLAM, EKF based SALM, and Fast SLAM are also available for this problem. EKF based SLAM is used for the non-linear model but has different issues (like inconsistency) when the map becomes large and complex. It does not work well with the non-Gaussian distribution. Fast SLAM algorithm is used with the non-Gaussian distribution. It can provide high speed computation and good accuracy but has issues during the resampling processes like particle depletion and degeneracy. On the other hand, Graph based SLAM can deal with large and complex maps and can process a large number of landmarks accurately and it can perform much better than EKF and Fast SLAM.
Single Stage Active Power Factor Correction Circuit for Street LED Light with Battery Backup
Authors:   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan, Muneer Asad , Fayyaz Ahsan ,   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan, Iqbal Shahid ,   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan, Jabbar Muhammad Waqas ,   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan, Qaisar Arslan ,   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan, Farooq Faisal ,   Department of Electrical Engineering, Hafiz Hayat Campus, University of Gujrat, 50700, Pakistan
Published: November 2022

This paper proposes a single-stage active power factor correction circuit for street LED light with battery back-up. The buck–boost converter and flyback converter are combined to achieve optimal performance. The first part of the integrated LED driver, the buck–boost converter is used to adjust the power while operating in the discontinuous conduction operation. The second part of the driver, the flyback converter provides regulated voltage to the LEDs. The battery backup circuit charges the battery when ac input power is available and provides power to LED lamp when input power supply is not available. The proposed LED driver was designed for 100 W output power and tested by PSpice simulation. The simulation results obtained are given in the paper to demonstrates the functionality of the proposed LED driver system. The result show good operation and performance of proposed LED driver.
Short Term Load Forecasting under extensive Power Outages using Domestic Energy Meter Load Profile; A case study
Authors:   University of Gujrat, Gujrat, Pakistan, Aslam Javaid , Kamran Muhammad ,   University of Engineering and Technology, Lahore, Pakistan, Arif Arslan ,   University of Gujrat, Gujrat, Pakistan, Wasif Muhammad ,   University of Gujrat, Gujrat, Pakistan, Irshad Jehanzeb ,   University of Gujrat, Gujrat, Pakistan, Hussain Iftikhar ,   University of Gujrat, Gujrat, Pakistan
Published: November 2022

Short-term load forecasting (STLF) is an obligatory and vibrant part of power system planning and dispatching. It is utilized for short and running targets in power system planning. Electricity consumption has nonlinear patterns due to its reliance on factors like time, weather, geography, culture, and some random and individual events. This research work emphasizes STLF through utilized load profile data from domestic energy meter and forecasts it by Multiple Linear Regression (MLR) and Cascaded Forward Back Propagation Neural Network (CFBP) techniques. First, simple regression statistical calculations were used for prediction, later the model was improved by using a neural network tool. The performance of both models compared with Mean Absolute Percent Error (MAPE). The MAPE error for MLR was observed as 47% and it was reduced to 8.9% for CFBP.
Modeling ocean waves and investigation of oceanic wave spectra for wave-to-wire system
Authors:   SECTE, EIS, University of Wollongong, Wollongong, Australia., Rasool Safdar , Muttaqi Kashem M. ,   SECTE, EIS, University of Wollongong, Wollongong, Australia., Sutanto Danny ,   SECTE, EIS, University of Wollongong, Wollongong, Australia., Iqbal Shahid ,   Department of Electrical Engineering, University of Gujrat, Gujrat, Pakistan
Published: November 2022

The oceanic wave energy is a profuse and sustainable source of clean energy but its enourmous potential is under-exploited. Even though the idea of energy harnessing from oceanic waves is not new, the developments in wave energy conversion technologies are still in an embryonic stage. In most of the studies associated to wave-to-wire systems, oceanic waves are taken as regular waves with a fixed amplitude and a fixed frequency. The main area of focus of the previous studies includes the different conversion stages of the wave-to-wire system, particularly the mechanical, and the electrical conversion stage of the energy and the modeling of oceanic waves for such studies remained neglected in such studies. However, the actual oceanic waves can be presented with the sum of various frequencies to show a specific sea-states with significant wave height and the peak period as the main characterizing parameters. In this study, detailed mathematical modeling of oceanic waves is offered and various wave spectra are investigated for their application in wave-to-wire-based system studies. The best-suited wave spectra are identified parametrically and thereafter it is used for the generation of wave elevation time series in the proposed method presented in this study. The generated time series are appliesd in wave-to-wire systems for the investigation of wave energy conversion devices to mimic the real sea environment. Based on inverse fast Fourier transforms, oceanic wave elevation time series are determined which will be acting as input data for any of the wave energy converters deployed for the capturing of useable energy.
Dynamic model to expand energy storage in form of battery and hydrogen production using solar powered water electrolysis for off grid communities
Authors:   Department of Chemical Engineering, HH Campus, University of Gujrat, Pakistan., Mushtaq Ali , Hussain Tajjamal ,   Department of Chemical Engineering, HH Campus, University of Gujrat, Pakistan., Abbas Ghulam ,   Department of Chemical Engineering, HH Campus, University of Gujrat, Pakistan., Shahzad Ayub Khurram ,   Department of Chemical Engineering, HH Campus, University of Gujrat, Pakistan., Haider M. Salman ,   Department of Chemical Engineering, HH Campus, University of Gujrat, Pakistan.
Published: November 2022

In this version, we used a 50WP PV panel to generate electricity, according to this strength output is getting used directly and it's far being gathered in a rechargeable battery. In this layout we connected batteries and storage of hydrogen to keep strength for the purpose of storing energy. If the rechargeable battery is overcharging, it'll be linked to the water electrolysis so that a big quantity of chemical power of the battery may be transformed into hydrogen and stored into hydrogen storage. Hydrogen may be stored as compacted gas and chemical storage. In this model we used proton exchange membrane electrolysis technology to break up water into hydrogen and oxygen after which stored in our designed tanks. Variation of voltages are used in our practical’s, we get mean value of hydrogen production is 22.8 ml/min on 2 supply voltage. Via using simulation software (Ansys), extrapolates the production of hydrogen 300ml/min on 12v supply that is 220% higher. Moreover, using second section of the designed, hydrogen converted again into electrical energy by using proton exchange membrane fuel cell. In this designed including batteries, water electrolysis and fuel cells, explores the feasibility of storing energy in the form of hydrogen and chemical energy for off grid areas and remote communities. The primary goal of hydrogen storage in this system is to store and manage the excess energy of the system generated by using PV panel and use it for the desired want.
Performance Improvement for double-stator permanent magnet synchronous machine using analytical subdomain model
Authors:   Electrical Engineering Technology, Pauh Putra Campus, Universiti Malaysia Perlis, Arau, Perlis, Malaysia., Ahmad Mohd Saufi , Ishak Dahaman ,   School of Electrical and Electronic Engineering, Universiti Sains Malaysia, Nibong Tebal, Penang, Malaysia., Leong Tiang Tow ,   Electrical Engineering Technology, Pauh Putra Campus, Universiti Malaysia Perlis, Arau, Perlis, Malaysia., Mohamed Mohd Rezal ,   Universiti Kuala Lumpur Malaysian Spanish Institute, Kulim, Kedah, Malaysia.
Published: November 2022

An analytical subdomain model is employed in this paper for predicting the magnetic field distributions in a three-phase double-stator permanent magnet synchronous machine (DS-PMSM) during open-circuit and onload conditions. Due to the stator cores are located in the outer and inner parts of the motor, the DS-PMSM construction is quite complex. The rotor magnets are positioned between these two stators. The stator inner radius, stator outer radius, slot opening, magnet arc, magnet thickness, inner and outer air-gap thickness and number of windings turns will directly influence the motor performance in DS-PMSM. The analytical subdomain model employed in this paper has a significant advantage as a rapid design tool since it is capable of precisely predicting the performance of DS-PMSM while requiring less computational effort. The analytical model was initially created using the separation of variables technique in four subdomains based on the Poisson’s and Laplace’s equations: inner air-gap, inner magnet, outer magnet and outer air-gap. Applying the appropriate boundary and interface conditions yields the field solutions in each subdomain. Besides, the fractional DS-PMSM with different number of slots between outer and inner stators to rotor poles can result in low cogging torque and non-overlapping winding configuration. The analytical results are validated by Finite Element Analysis (FEA). The slotted air-gap flux density, back-emf, and output torque have all been evaluated as electromagnetic performances. The results demonstrate that the suggested analytical model is capable of accurately predicting the DS-PMSM performance.
İŞ YERİNİN VƏ PERSONALIN İDARƏ EDİLMƏSİ NƏZƏRİYYƏSİ
Authors: Miraqşin Həkimov,  Rafiq Hacıyev Miraqşin Həkimov,  Rafiq Hacıyev
Published: November 2022

Ümumiyyətlə, hər hansı bir iş yerinin effektivliyi həmin iş yerini təşkil edən şəxslərin keyfiyyətinin ilkin və birbaşa funksiyasıdır. İş yerlərinin üzvlərinin bilikləri, bacarıqları və öhdəlikləri birlikdə iş planlarının hazırlanmasında və həyata keçirilməsində, həmçinin məhsul və xidmətlərin çatdırılmasında ən mühüm amili təşkil edir. Nəticə etibarı ilə, idarəetmənin personal funksiyası olan işçilərin cəlb edilməsi, təşkili, hər bir cəhətdən inkişafı və motivasiyası baş direktordan tutmuş birinci səviyyəli rəhbərə qədər idarəetmənin bütün səviyyələrində mühüm yer tutur. İş yerinin personalı idarəetmənin ən çətin obyekti kimi qəbul edilir. Maddi aktivlərdən fərqli olaraq, insanlar müstəqil şəkildə qərar qəbul edə və onların işi üzrə qpyulan tələbləri qiymətləndirə bilərlər. Həmçinin, heyət hər bir üzvünün öz maraqları olan və idarəetmə təsirlərinə çox həssas olan bir kollektivdir və onların reaksiyalarını əvvəlcədən təxmin etmək çox vaxt çətin məsələyə çevrilir. Personalın idarə edilməsinin müasir konsepsiyaları və nəzəriyyələri işçinin şəxsiyyətinin artan əhəmiyyətinin tanınmasına, onun motivasiyalarının və istəklərinin öyrənilməsinə, o cümlədən onları düzgün formalaşdırmaq və şirkətin qarşısında duran strateji vəzifələrə, hədəflərə və məqsədlərə uyğun olaraq tənzimləmək bacarığına əsaslanır. İdarəetmə nöqteyi-nəzərindən biznesin əsas məqsədinin qazanc əldə etmək olmasına baxmayaraq, personalın idarə edilməsinin müasir nəzəriyyəsi, konsepsiyası və praktikası təkcə maddi deyil, həm də işçilərin sosial ehtiyaclarının ödənilməsinə böyük həcmdə diqqət yetirir. İş yerinin idarə edilməsi nəzəriyyələrindən ən yaxşı təcrübələri başa düşmək və tətbiq etmək kollektivi müvəffəqiyyətə doğru daha effektiv və funksional şəkildə istiqamətləndirməyə kömək edə bilər. Bu nəzəriyyələrin bir çoxu bu gün iş yerlərinə rəhbərlik etmək və böyütmək üçün istifadə olunan liderlik və rəhbərlik yanaşmalarının yaranmasına səbəb olur və onların içərisindən iş yerinin prinsiplərinə və kollektivin məqsədlərinə ən uyğun gələn strategiyalar müəyyən edilir və tətbiq olunur.
Açar sözlər: Personal, İdarəetmə, İş yeri, Effektivlik, Keyfiyyət.
Prospects of using the algorithm in the environment of Microsoft Excel as an intermediate variant of zootechnical accounting
Authors: Tatsii Oleksandr , Susol Ruslan
Published: November 2022

Available on the domestic market, the program "Emphasis - pedigree accounting
in pig breeding" provides the opportunity for accountants and breeding technologists to
fully perform pedigree accounting, generate various types of reports, and plan the schedule of certain technological operations in an automated mode. However, there are
not so many pig enterprises that use special software (Accent - pedigree accounting in
pig breeding and Plem Office Pic) in Ukraine. According to the survey, it turned out that
only about 20 % of surveyed enterprises use the specialized IT products. Therefore, the
purpose of our work was to analyze the possibilities and prospects of using the Microsoft Excel program as an intermediate simplified option for keeping zootechnical and breeding records in the conditions of modern breeding and commodity enterprises for the production of pig products in Ukraine. The developed Excel algorithm "Primary
zootechnical accounting" is a quick and convenient way to create the main forms of
breeding accounting, if it is necessary, to display the necessary reports on the monitor
screen or in the paper form. The advantages of using the developed Excel algorithm on
the example of its use in the conditions of a breeding breeder for breeding Pietren pigs:
selection of pairs taking into account the degree of kinship between animals to prevent
inbreeding, the actual presence of sows in the herd and the structure of the herd in real
time, evaluation of the productivity of boars, sows and others. Disadvantages of the
developed Excel algorithm "Primary zootechnical accounting" - the algorithm works
quite effectively with a relatively small number of animals (100-200 heads are optimal,
and the maximum is up to 500 heads of the main sows), some tables are created manually, and from time to time it is necessary to manually optimize the database. The developed Excel algorithm "Primary zootechnical accounting" is recommended for use in the conditions of breeding farms as a transitional stage to the next use of professional programs for keeping breeding and zootechnical accounting in conditions of limiting the costs of material resources.
Key words: primary zootechnical accounting, algorithm, Excel program, breeding
stock, pigs.
Reproductive qualities and the level of their phenotypical consolidation in sows of different operational value
Authors: Khalak Victor , Tsereniuk Oleksandr , Gryshyna Ludmila , Ilchenko Mariia
Published: November 2022

The results of studies of indicators of reproductive qualities of sows of different
operational value, the level of their phenotypic consolidation are presented, and the
economic efficiency of using sows in experimental groups is calculated. The experimental part of the research was carried out in LLC "Druzhba-Kaznacheevka" in the
Dnepropetrovsk region and in the laboratory animal husbandry of the State Institution
"Institute of Grain Crops of the NAAS of Ukraine". The work was carried out according
to the program of scientific research of NAAS No. 31 "Genetic improvement of farm
animals, their reproduction and preservation of biodiversity (Genetics, conservation and
reproduction of biological resources in animal husbandry)" task "To determine the
adaptive characteristics and the nature of inheritance of polygenic-hereditary traits of
pigs of different genotypes and to develop an integrated system for creating a highly productive population". The object of research was sows of the Llarge White breed. It
was found that the sows of the main herd, according to the characteristics of reproductive ability, belong to the I class and the elite class. The number of sows from which 100 or more live piglets were obtained during the breeding period is 27.45 %. Sows in the "high operational value" category exceed their peers in the "average operational value" category in terms of life expectancy and breeding use by 25.1 and 26.2 months respectively.
A significant difference between the animals of the indicated groups was
established according to the indicators "received farrowings", "received live pigs in total, head", "multiple births, head.", "weight of the nest at the time of weaning at the age of 28 days, kg" and the index of N. D. Berezovsky. The coefficients of phenotypic consolidation (К1, К2) range from – 0.050 to +0.231 units, which indicates an insufficient level of consolidation of reproductive qualities in sows of the controlled population and
determines the vector of further work of agricultural specialists and research workers -
curator of work in this direction. The coefficient of pair correlation between the breeding
index of sow reproductive qualities (SIRQS) and the absolute indicators of reproductive
qualities of sows of different operational value ranges from –0.525 (tr = 3.09) to +0.934
(tr = 81.8). The maximum increase in additional production was obtained from sows of
the "high operational value" category – + 3.41 %, and its cost is 92.44 UAH /heard/
farrowing.
Key words: sow, breed, reproductive qualities, operational value, coefficient of
phenotypic consolidation, cost of additional production, variability, correlation.
GMO analysis technique based on PCR and real-time PCR methods
Authors: Saienko Artem , Peka Mykyta , Balatsky Viktor , Korinnyi Sergii , Tsereniuk Oleksandr
Published: November 2022

The use of genetically modified organisms (GMOs) is promising for overcoming the
shortage of food products in the world and solving the problem of hunger arising in
various regions. At the same time, the use of GMOs has become a cause of debate, as the safety of consuming GMO products for human health remains unproven. The risks
associated with GMOs cause public concern, which has led to the restriction of the use
of GMOs and their products in many countries and the need for constant control of their
content in food products. This study describes methods based on the polymerase chain
reaction (PCR), such as Real-time PCR and PCR with electrophoretic separation of
amplificates, which are generally accepted in GMO analysis. In order to control the
presence of GMOs in food raw materials, feed and finished products of plant and animal
origin, screening is carried out for the presence of the most common genetic engineering structures used during the creation of GMOs: CaMV 35S promoter and NOS terminator.
Both Real-time PCR and PCR with electrophoretic separation of amplificates allow to
establish the presence of GMOs with high accuracy, and Real-time PCR is also used to
determine the concentration of GMOs in the studied samples. The work presents a typical electrophoresis with visualization of the obtained PCR fragments that required
electrophoretic separation and fragments that were synthesized in the Real-time PCR
reaction, and determined the approximate sizes of the obtained fragments relative to the pBR322 DNA-MspI molecular weight marker. The approach described in this study,
based on the use of PCR techniques, can be successfully used for GMO analysis of all
groups of raw materials and finished products of animal and plant origin, and is also
well adapted for the detection of various genetic engineering structures, not limited to the CaMV 35S promoter and terminator NOS, which makes it possible to increase the
efficiency of such analysis and continue its application in relation to new genetic
engineering structures used during the creation of GMOs.
Keywords: genetically modified organisms (GMOs), PCR methods, GMO analysis,
raw materials and finished products of plant and animal origin
Mãos na pedra: A Repetição do gesto primevo na Toca da Argila, Região Arqueológica da Central, BA
Authors: Rabello Angela
Published: November 2022

O ato de imprimir as mãos na rocha por populações pré-históricas e a repetição desse gesto na atualidade compreendem o centro das reflexões desenvolvidas neste artigo. A partir da vivência na Oficina de Cerâmica (EBA/UFRJ), consideramos a mão signo/símbolo, egressa da complexidade de ser/estar do homem no mundo.
Um sonho que se mostra: a criação da casado Pontal
Authors: Mascelani Angela
Published: November 2022

Este artigo trata da constituição do acervo da Casa do Pontal, que abriga o mais representativo éoojunto de obras da Arte Popular Brasileira, como resultado da paixão e persistência do colecionador Jacques Van_de Beuque.
Formação do artista plástico no Brasil: o caso da Escola de Belas Artes
Authors: Zilio Carlos
Published: November 2022

A questão central deste estudo situa-se basicamente em tomo da formulação de uma análise críticasobre o processo histórico do ensino de arte no Brasil desde a instalação da Academia Imperial de Belas Artes, em 1816, até os nossos dias. O eixo principal desta análise é a Escola Nacional de Belas Artes da UFRJ, primeiro estabelecimento do gênero no Brasil e que, durante  mais de um século, foi o modelo para as demais escolas de arte. A presente investigação desenvolveu-se através de análises do conjunto de regras acadêmicas, que se tomaram um paradigma para o ensino, definindo o estatuto oficial para a formação do artista brasileiro. Os primeiros sinais de ruptura do modelo imposto pela Escola Nacional de Belas Artes têm origem nos conflitos entre os acadê­micos e modernos no interior da Escola, após 1931. A partir de então, apresentou-se uma defasagem crescente entre a realidade da produção artística e o ensino de arte. As questões que a arte moderna trouxe para o ensino artístico modificaram o panorama institucional, criando um "desajuste para o ensino da arte acadêmica, abrindo novos caminhos para a renovação do ensino artístico e exigindo um outro instrumental analitico capaz de assimilar as novas formulações didáticas. A Escola toma-se atuante quando colocada em sintonia com o restante do sistema de arte, buscando, na aproxi­ mação constante com essas outras fontes geradoras do saber, a sua própria dinâmica de renovação.
A CERÂMiCA COMO PROCESSO UMA EXpERiÊNciA pRÁTÍCA NO CENTRO INTEqRAdo dE CERÂMÍCA EBA/FAU
Authors: Varela Marcos
Published: November 2022

Procurarei mostrar as conseqüências surgi.das da vivência de um processo técnico que percebi permitir uma gama amplíssima de possibilidades de expressão individual. Num primeiro momento pensei em associar as potencialidades da cerâmica com mioha prática pessoal de xil6grafo, buscando os pontos de aproximação entre processos tão diferentes e ao mesmo tempo tão possíveis de relacionamento. Isto se daria através da exploração de placas de argila utilizadas comomatrizes para impressão em relevo. Logo foi possivel perceber a interferência, a atuação da argila como material, em certo sentido vivo, no decorrer da execução, o "tempo do barro", ou seja, o processo de secagem, endurecimento, com diferentes consistências decorrentes do tempo, permitindo a incisão como na xilogravura e o recebimento de impressões ou moldagem de objetos sobre ele, até a secagem total e finalmente a queima que dá a dureza à cerâmica.
FAZER cerâmico, FAZER urbano, FAZER imaginário
Authors: Borde Andréa
Published: November 2022

Este trabalho busca contribuir com uma reflexão sobre a relação existente entre Arte, Cidade e o Sujeito que as vivencia, através das manifestações artísticas que participam do imaginário urbano. Os registros imagéticos realizados sobre o bairro da Lapa apontaram a possibilidade de tratarmos a fachada como um corpo e a memórfa como um sentido. Estes registros podem nos levar a um estudo dos cheios e vazios no uso dos materiais do mesmo período de um espaço urbano.
Entrevista com Amilcar de Castro
Authors: Castro Amilcar de
Published: November 2022

Entrevista de Amilcar de Castro a José Bento, Renato Madureira, Franz Manata e Isaura Pena.
"Fazer de dois um multiplica o rir": depoimentos sobre Lygia Clark em Paris
Authors: Ferreira Glória
Published: November 2022

Depoimentos de críticos, artistas e professores que conviveram com Lygia Clark no período de quase 10 anos em que viveu e trabalhou em Paris, para pesquisa realizada entre 1990 e 1991 sobre sua relação com a arte cinética, especialmente com a questão da participação do espectador, na fala dos artistas venezuelanos, radicados em Paris, Raphel Soto e Cruz-Diez, e do crítico francês Frank Popper; seu trabalho na Sorbonne, comentado por Pierre Baqué, que a convidou para integrar o nova escola; as impressões de Léa Lublin, artista argentina também atuante nesse contexto, e de Claude Pasquier, que participou de seu curso; as evocações de sua vida e sua obra pelo crítico Pierre Restany.
As bienais - formatos abertos x conteúdos fechados: reflexões sobre identidade e função das bienais
Authors: Vergara Luiz Guilherme
Published: November 2022

O artigo propõe apresentar outros componentes que atuam na difícil relação entre identidade (o que é?) e função (para quem? e para quê?) de bienais/museus e o local/público da arte. O que subjaz como pano de fundo desse debate é a própria necessidade de aproximação mais orgânica entre a expansão e multiplicação acelerada das poéticas artísticas contemporâneas e suas respectivas estruturas de apresentação e comunicação: bienais/museus.
Considerações sobre a escultura urbana de Richard Serra
Authors: Rodrigues Renato
Published: November 2022

A interpretação da escultura urbana de Richard Serra tem sido influenciada pelo debate sobre Tilted Arc. Neste ensaio, analisamos as esculturas Twain, Wright's Triangle e Berlin Block for Charlie Chaplin, assim como o projeto escultórico para o P.A.D.C., sugerindo que o artista teria gradualmente inrorporado as relações entre escultura e espaço urbano a sua pesquisa. Nestas análises, consideramos a inserção das obras de Serra em seus contextos arquiteturais e urbanísticos com o objetivo de delinear os transformações ocorridas em sua escultura de sítio específico.
A arte da natureza
Authors: Tiberghien Gilles A.
Published: November 2022

O artigo discute o interesse artístico pela natureza, pela instabilidade constitutiva de seus elementos, enquanto um fenômeno recente no domínio da arte, problematizando questões relativas à identidade das obras e a sua formalização. As mudanças, no que diz respeito à forma, transformam o "estatuto teórico" da escultura, sendo este uma questão não mais de forma, mas de matéria, não mais de eternidade, mas de duração. Impõe-se assim repensar a arte à luz de categorias que pertencem mais ao domínio da física grega do que da estética clássica, tais como o belo.
Atrocidades maravilhosas: ação independente de arte no contexto público
Authors: Vogler Alexandre
Published: November 2022

Partindo do relato do Projeto de Intervençõo Urbana Atrocidades Maravilhosas, o texto aponta considerações sobre a cidade como campo de experiências e suas implicações frente a uma proposta de arte pública.
Propósito experimental
Authors: Oteiza Jorge de
Published: November 2022

Mais de quarenta anos após ter recebido o Prêmio Internacional de Escultura da IV Bienal de São Paulo, em 1957, a obra de Jorge de Oteiza ainda é conhecida de poucos, tanto aqui como internacionalmente. Oteiza, que nasceu em Orio, no País Basco, em 1908, ocupa uma posição de extrema singularidade no quadro das correntes construtivas do pós-guerra. Heterodoxa, postulando uma metafísica estranha à estrita racionalidade geométrica, a obra de Oteiza é um dos marcos da escultura moderna. Essa singularidade fronteia questões também abordadas pelo neoconcretismo - o problema do vazio na escultura, entre outros -, com o qual teve contato, em especial por intermédio de Franz Weissman, de quem se tornou amigo. Arte Ensaios publica neste número o texto Propósito experimental, escrito pelo artista especificamente para sua participação na IV Bienal, em que Oteiza expõe de formo veemente, filosófico e dramático suas ideias e conceitos sobre a escultura, que, logo após, em 1959, abandonaria.
Dia-a-dia
Authors: Zilio Carlos
Published: November 2022

Paulo Houayek foi um dos primeiros professores que conheci quando entrei para a Escola de Belas Artes, em 1994.
A construção de um imaginário moderno: as capas da Editora Civilização Brasileira (1960/1975)
Authors: Silva Junior Amaury Fernandes da
Published: November 2022

Um estudo sobre as imagens, em especial a construção de linguagens com o uso delas, cujo objeto central de análise é um conjunto de trabalhos originários da indústria editorial: as capas dos livros lançados pela Editora Civilização Brasileira entre os anos de 1960 e 1975.