Hate speech is one of the negative sides of social media abuse. Hate speech can be classified into insults, defamation, unpleasant acts, provoking, inciting, and spreading fake news (hoax). The purpose of this study is to compare the SVM and Naïve Bayes methods with feature extraction in the form of Indonesian NER (InNER) for detecting hate speech. To obtain the best model, this study applies five steps: a) data collection; b) data preprocessing; c) feature engineering; d) model development; and e) evaluating and comparing models. In this study, we have collected 7100 tweets as an initial dataset. After manual annotation, this study produced 1681 tweets: 548 insult tweets, 288 blasphemy tweets, 272 provocative tweets, and 573 neutral tweets. This study use two Python libraries that accommodate NER in Indonesian, namely the NLTK library and the Polyglot library. Based on the results of the evaluation of the proposed model, model 5, which develops the SVM algorithm with the NLTK library, is the best model proposed. This model shows an accuracy score of 92.88% with a precision of 0.93, a recall of 0.93, and an F-1 score of 0.92.
{"title":"Comparison of SVM and Naïve Bayes Algorithms with InNER enriched to Predict Hate Speech","authors":"Isnen HADİ AL GHOZALİ, Arif PİRMAN, Indra INDRA","doi":"10.31202/ecjse.1325078","DOIUrl":"https://doi.org/10.31202/ecjse.1325078","url":null,"abstract":"Hate speech is one of the negative sides of social media abuse. Hate speech can be classified into insults, defamation, unpleasant acts, provoking, inciting, and spreading fake news (hoax). The purpose of this study is to compare the SVM and Naïve Bayes methods with feature extraction in the form of Indonesian NER (InNER) for detecting hate speech. To obtain the best model, this study applies five steps: a) data collection; b) data preprocessing; c) feature engineering; d) model development; and e) evaluating and comparing models. In this study, we have collected 7100 tweets as an initial dataset. After manual annotation, this study produced 1681 tweets: 548 insult tweets, 288 blasphemy tweets, 272 provocative tweets, and 573 neutral tweets. This study use two Python libraries that accommodate NER in Indonesian, namely the NLTK library and the Polyglot library. Based on the results of the evaluation of the proposed model, model 5, which develops the SVM algorithm with the NLTK library, is the best model proposed. This model shows an accuracy score of 92.88% with a precision of 0.93, a recall of 0.93, and an F-1 score of 0.92.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135867241","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Cancer remains a significant global health concern, responsible for numerous deaths worldwide. Common treatment methods include surgery, radiotherapy, chemotherapy, as well as biological therapies, and targeted therapies. The field of nanotechnology has made remarkable advancements in drug delivery systems, enabling improved drug penetration and direct delivery to specific areas. These systems, known as drug delivery systems (DDSs), aim to enhance drug efficacy and safety by controlling release rate, timing, and targeted location within the body. Carbon nanotubes (CNTs) have emerged as promising materials for DDSs due to their ability to target specific sites and regulate molecule release. Mitoxantrone (MTX) and doxorubicin (DOX) are widely used chemotherapy drugs. This study uses molecular dynamics simulations to compare the interactions between these drugs and single-walled carbon nanotubes (SWCNTs). The simulation process was performed using BIOVA Materials Studio. The adsorption process of these drugs was observed in a non-aqueous simulation box to evaluate their compatibility with nanocarriers for biomedical applications. In addition, the interaction energies between drugs and nanotubes were investigated. The results indicated positively energetic interactions between anti-cancer drugs and SWCNTs, driven by π-π interactions and substantial interaction energies. While both mitoxantrone and doxorubicin effectively interacted with SWCNTs, doxorubicin demonstrated more efficient interaction.
{"title":"Comparative Analysis of Mitoxantrone and Doxorubicin Interactions with Single-Walled Carbon Nanotubes Using Molecular Dynamics Simulations","authors":"Muhammed Berkcan ARSLAN","doi":"10.31202/ecjse.1345238","DOIUrl":"https://doi.org/10.31202/ecjse.1345238","url":null,"abstract":"Cancer remains a significant global health concern, responsible for numerous deaths worldwide. Common treatment methods include surgery, radiotherapy, chemotherapy, as well as biological therapies, and targeted therapies. The field of nanotechnology has made remarkable advancements in drug delivery systems, enabling improved drug penetration and direct delivery to specific areas. These systems, known as drug delivery systems (DDSs), aim to enhance drug efficacy and safety by controlling release rate, timing, and targeted location within the body. Carbon nanotubes (CNTs) have emerged as promising materials for DDSs due to their ability to target specific sites and regulate molecule release. Mitoxantrone (MTX) and doxorubicin (DOX) are widely used chemotherapy drugs. This study uses molecular dynamics simulations to compare the interactions between these drugs and single-walled carbon nanotubes (SWCNTs). The simulation process was performed using BIOVA Materials Studio. The adsorption process of these drugs was observed in a non-aqueous simulation box to evaluate their compatibility with nanocarriers for biomedical applications. In addition, the interaction energies between drugs and nanotubes were investigated. The results indicated positively energetic interactions between anti-cancer drugs and SWCNTs, driven by π-π interactions and substantial interaction energies. While both mitoxantrone and doxorubicin effectively interacted with SWCNTs, doxorubicin demonstrated more efficient interaction.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Utilization of additive manufacturing, particularly Laser Powder Bed Fusion (L-PBF), has garnered considerable interest in recent times owing to its capacity to produce intricate geometries and functional components possessing enhanced mechanical characteristics. This review provides a thorough examination of the sustainability and environmental implications associated with the production of as-built Ti-6Al-4V parts using Laser Powder Bed Fusion (L-PBF) technology in additive manufacturing. This study aims to assess the sustainability dimensions of Laser Powder Bed Fusion technology, specifically in relation to material efficiency, energy usage, and waste production. Furthermore, this study evaluates the environmental ramifications associated with L-PBF Ti-6Al-4V components across their entire life cycle, encompassing activities such as extraction of raw materials, processing, utilization, and end-of-life management. This review critically examines the existing body of knowledge pertaining to the sustainability and environmental implications associated with as-built L-PBF Ti-6Al-4V components. The objective of this study is to determine the primary factors that impact sustainability, offer a comprehensive understanding of the environmental consequences associated with L-PBF technology, and delineate the existing constraints, difficulties, and prospects for future investigations in the domain of sustainable additive manufacturing.
{"title":"A Comprehensive Review on Sustainability and Environmental Impact of Laser Powder Bed Fusion Additively Manufactured As-Built Ti-6Al-4V Parts","authors":"Erkan TUR","doi":"10.31202/ecjse.1325609","DOIUrl":"https://doi.org/10.31202/ecjse.1325609","url":null,"abstract":"Utilization of additive manufacturing, particularly Laser Powder Bed Fusion (L-PBF), has garnered considerable interest in recent times owing to its capacity to produce intricate geometries and functional components possessing enhanced mechanical characteristics. This review provides a thorough examination of the sustainability and environmental implications associated with the production of as-built Ti-6Al-4V parts using Laser Powder Bed Fusion (L-PBF) technology in additive manufacturing. This study aims to assess the sustainability dimensions of Laser Powder Bed Fusion technology, specifically in relation to material efficiency, energy usage, and waste production. Furthermore, this study evaluates the environmental ramifications associated with L-PBF Ti-6Al-4V components across their entire life cycle, encompassing activities such as extraction of raw materials, processing, utilization, and end-of-life management. This review critically examines the existing body of knowledge pertaining to the sustainability and environmental implications associated with as-built L-PBF Ti-6Al-4V components. The objective of this study is to determine the primary factors that impact sustainability, offer a comprehensive understanding of the environmental consequences associated with L-PBF technology, and delineate the existing constraints, difficulties, and prospects for future investigations in the domain of sustainable additive manufacturing.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B HEMANTH KUMAR, Kavalı JANARDHAN, V. S CHANDRİKA, G. G RAJA SEKHAR, Deepak Prakash KADAM, Dhananjay KUMAR
Multilevel inverters (MLIs) have become a favoured option for medium voltage and high power DC to AC conversion applications to assure high power level cascade type inverter which accepts multiple/single DC sources and offers combined AC output for appropriate voltage and frequency. MLIs provide various benefits over two-level inverters, including lower dv/dt, the capacity to handle greater voltage levels, a quasi-sinusoidal output waveform, and lower Total Harmonic Distortion (THD), among others. The biggest problem in adopting the MLI is the increasing number of switches and it's design. MLIs based on switched capacitors (SC) for boost-type DC-AC converters often demonstrate a trade-off among switch voltage rating and switch count. This work introduces a new 5-level(5L) SC inverter by adding a switched capacitor module into the usual 3L neutral point clamped inverter leg(NPC). The SC unit consists of one bidirectional switch and two capacitors capable of withstanding one-quarter of the DC voltage. When compared to typical 5L inverters, such as standard NPC and active NPC designs, the new approach in addition reduces the amount of switches but also shorten the topology. The proposed FLSCI has been examined by using several PWM techniques. The simulation and hardware results showed that the presented FLSCI is ideal for a broad variety of applications.
{"title":"A Five Level SC Inverter with reduced switch count and self balancing capability","authors":"B HEMANTH KUMAR, Kavalı JANARDHAN, V. S CHANDRİKA, G. G RAJA SEKHAR, Deepak Prakash KADAM, Dhananjay KUMAR","doi":"10.31202/ecjse.1263584","DOIUrl":"https://doi.org/10.31202/ecjse.1263584","url":null,"abstract":"Multilevel inverters (MLIs) have become a favoured option for medium voltage and high power DC to AC conversion applications to assure high power level cascade type inverter which accepts multiple/single DC sources and offers combined AC output for appropriate voltage and frequency. MLIs provide various benefits over two-level inverters, including lower dv/dt, the capacity to handle greater voltage levels, a quasi-sinusoidal output waveform, and lower Total Harmonic Distortion (THD), among others. The biggest problem in adopting the MLI is the increasing number of switches and it's design. MLIs based on switched capacitors (SC) for boost-type DC-AC converters often demonstrate a trade-off among switch voltage rating and switch count. This work introduces a new 5-level(5L) SC inverter by adding a switched capacitor module into the usual 3L neutral point clamped inverter leg(NPC). The SC unit consists of one bidirectional switch and two capacitors capable of withstanding one-quarter of the DC voltage. When compared to typical 5L inverters, such as standard NPC and active NPC designs, the new approach in addition reduces the amount of switches but also shorten the topology. The proposed FLSCI has been examined by using several PWM techniques. The simulation and hardware results showed that the presented FLSCI is ideal for a broad variety of applications.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136011624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chamotte means fired clay. It is also called Grog and it can have many particle sizes, from fine to coarse. The composition formed by the addition of chamotte to various clay compositions is called chamotte mud (CM). The most preferred and widely used muds in the production of artistic ceramic products are chamotte mud and red pottery mud (R-PM). The sintering, linear shrinkage, water absorption, and color properties of these muds vary depending on their components and firing temperatures. Chamotte mud has properties that make it suitable for use at high temperatures (1150-1200 oC). The obtained products, however, have a high-water absorption value, because it deforms in high-temperature firings, the red Kınık pottery mud used in the study is typically used for artistic productions at low temperatures such as 900-1000 oC. Ceramic artists may prefer to combine and use both types of mud to enhance the color effects and shaping properties in their works.
The aim of this study is to reduce water absorption of the body while increasing firing shrinkage, in other words, increasing shrinkage during sintering by adding red pottery mud to chamotte mud and also to optimize the tendency of the R-PM to undergo deformation with temperature. As a result, the products obtained, particularly those produced for artistic outdoor use, will have a longer lifetime. In experimental studies, 6 recipes were produced by combining chamotte and red mud in specific ratios, and the changes in properties such as water absorption, linear shrinkage, color, gloss, microstructure, and sintering behavior of ceramic bodies as a result of firing at 1160 oC were investigated.
{"title":"Investigation of the effects of red clay on the structural properties of chamotted clay bodies","authors":"Selvin YESİLAY","doi":"10.31202/ecjse.1336631","DOIUrl":"https://doi.org/10.31202/ecjse.1336631","url":null,"abstract":"Chamotte means fired clay. It is also called Grog and it can have many particle sizes, from fine to coarse. The composition formed by the addition of chamotte to various clay compositions is called chamotte mud (CM). The most preferred and widely used muds in the production of artistic ceramic products are chamotte mud and red pottery mud (R-PM). The sintering, linear shrinkage, water absorption, and color properties of these muds vary depending on their components and firing temperatures. Chamotte mud has properties that make it suitable for use at high temperatures (1150-1200 oC). The obtained products, however, have a high-water absorption value, because it deforms in high-temperature firings, the red Kınık pottery mud used in the study is typically used for artistic productions at low temperatures such as 900-1000 oC. Ceramic artists may prefer to combine and use both types of mud to enhance the color effects and shaping properties in their works. 
 The aim of this study is to reduce water absorption of the body while increasing firing shrinkage, in other words, increasing shrinkage during sintering by adding red pottery mud to chamotte mud and also to optimize the tendency of the R-PM to undergo deformation with temperature. As a result, the products obtained, particularly those produced for artistic outdoor use, will have a longer lifetime. In experimental studies, 6 recipes were produced by combining chamotte and red mud in specific ratios, and the changes in properties such as water absorption, linear shrinkage, color, gloss, microstructure, and sintering behavior of ceramic bodies as a result of firing at 1160 oC were investigated.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136010468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Montaser RAMADAN, Shadi M S HİLLES, Mohammad ALKHEDHER
Mobile robots are frequently utilized in the surveillance sector for both industrial and military purposes. The ability to navigate stairs is crucial for carrying out surveillance jobs like urban search and rescue operations. The research paper shows that the design methodology for a six-wheeled rover robot that can adapt to various stairs and maintain its stability based on the robot's specifications, kinematics restrictions, the maximum height, and the lowest step length needed to climb up and down the stairs is proposed. Based on a Raspberry Pi, camera, and LIDAR distance sensor, the suggested robot has the capacity to measure the stair height before starting to climb. A Convolutional Neural Networks (CNN) deep learning model is developed for the purpose of stair recognition. Additionally, stair alignment was estimated using statistical filtering on pictures and LIDAR distance reading. The robot can then decide whether it can climb the stairs or not based on its kinematics limitations and the height of the stairs as measured by our system. Result shows that our stair detection algorithm achieved an accuracy of 99.46% and a mean average precision of 99.64%. The proposed AI-Powered Robot-based stair recognition system, according to final results, effectively climbed stairs with a height range between 13 and 23 cm.
{"title":"Design and Study of an AI-Powered Autonomous Stair Climbing Robot","authors":"Montaser RAMADAN, Shadi M S HİLLES, Mohammad ALKHEDHER","doi":"10.31202/ecjse.1272769","DOIUrl":"https://doi.org/10.31202/ecjse.1272769","url":null,"abstract":"Mobile robots are frequently utilized in the surveillance sector for both industrial and military purposes. The ability to navigate stairs is crucial for carrying out surveillance jobs like urban search and rescue operations. The research paper shows that the design methodology for a six-wheeled rover robot that can adapt to various stairs and maintain its stability based on the robot's specifications, kinematics restrictions, the maximum height, and the lowest step length needed to climb up and down the stairs is proposed. Based on a Raspberry Pi, camera, and LIDAR distance sensor, the suggested robot has the capacity to measure the stair height before starting to climb. A Convolutional Neural Networks (CNN) deep learning model is developed for the purpose of stair recognition. Additionally, stair alignment was estimated using statistical filtering on pictures and LIDAR distance reading. The robot can then decide whether it can climb the stairs or not based on its kinematics limitations and the height of the stairs as measured by our system. Result shows that our stair detection algorithm achieved an accuracy of 99.46% and a mean average precision of 99.64%. The proposed AI-Powered Robot-based stair recognition system, according to final results, effectively climbed stairs with a height range between 13 and 23 cm.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135472324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Utilities have been forced to raise the overall efficiency towards a better position in radial distribution systems (DS). The literature has proved that reactive power compensation performs well in minimizing the power loss ( PLoss ) and enhancing the bus voltage profile within the permissible range in radial DSs. This work presents Archimedes optimization algorithm (AOA) to resolve the problem efficiently. The merit of this technique is that it can offer a global or near-global optimum for capacitor siting and sizing. The main intention of this study is to obtain annual financial benefit (AFB) using the placement and sizing of capacitors optimally. This can, however, be achieved by minimizing the objective function composed of cost-based PLoss and capacitor investment cost on radial DSs. The proposed technique has been tested on four renowned DS: the Indian 10-bus, modified 12-bus, IEEE 69-bus, and 94-bus Portugal system. The previously published papers are compared with the outcomes of AOA in terms of PLoss reduction and AFB and prove that AOA achieves better performance and more AFB.
{"title":"Optimal Reactive Power Injection in Distribution Networks to Maximize Cost Savings Via AOA","authors":"Lavanya M","doi":"10.31202/ecjse.1270783","DOIUrl":"https://doi.org/10.31202/ecjse.1270783","url":null,"abstract":"Utilities have been forced to raise the overall efficiency towards a better position in radial distribution systems (DS). The literature has proved that reactive power compensation performs well in minimizing the power loss ( PLoss ) and enhancing the bus voltage profile within the permissible range in radial DSs. This work presents Archimedes optimization algorithm (AOA) to resolve the problem efficiently. The merit of this technique is that it can offer a global or near-global optimum for capacitor siting and sizing. The main intention of this study is to obtain annual financial benefit (AFB) using the placement and sizing of capacitors optimally. This can, however, be achieved by minimizing the objective function composed of cost-based PLoss and capacitor investment cost on radial DSs. The proposed technique has been tested on four renowned DS: the Indian 10-bus, modified 12-bus, IEEE 69-bus, and 94-bus Portugal system. The previously published papers are compared with the outcomes of AOA in terms of PLoss reduction and AFB and prove that AOA achieves better performance and more AFB.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135472323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In recent years, Artificial Neural Network (ANN) applications in antenna structures have gained significant traction due to their potential to reduce design and calculation times, offering optimization and prediction capabilities. This study introduces a novel monopole patch antenna design featuring a consecutive square-shaped broadband microstrip-line-fed antenna. The proposed antenna exhibits an impressive impedance bandwidth of 68% (1.55 - 2.82 GHz), a remarkable return loss of -47.25 dB, and a directivity gain of 2.77 dBi. Simulation studies were conducted using CST™ Studio Suite electromagnetic simulation software. The ANN model developed based on feed-forward backpropagation demonstrates exceptional agreement with the simulation results, showcasing an accuracy of 99.61805% and performing 2769.231 times faster. With advancing technology, ANNs present an effective solution for addressing complex antenna design challenges arising from escalating data rate requirements and uninterrupted data transmission. These results open promising avenues for further advancements in antenna design aided by ANN applications.
{"title":"Optimization of Monopole Consecutive Square-Shaped Patch Antenna with ANN for Wireless Communicaton Systems","authors":"Sena Esen BAYER KESKİN, Cem GÜLER, Batuhan USLU","doi":"10.31202/ecjse.1247180","DOIUrl":"https://doi.org/10.31202/ecjse.1247180","url":null,"abstract":"In recent years, Artificial Neural Network (ANN) applications in antenna structures have gained significant traction due to their potential to reduce design and calculation times, offering optimization and prediction capabilities. This study introduces a novel monopole patch antenna design featuring a consecutive square-shaped broadband microstrip-line-fed antenna. The proposed antenna exhibits an impressive impedance bandwidth of 68% (1.55 - 2.82 GHz), a remarkable return loss of -47.25 dB, and a directivity gain of 2.77 dBi. Simulation studies were conducted using CST™ Studio Suite electromagnetic simulation software. The ANN model developed based on feed-forward backpropagation demonstrates exceptional agreement with the simulation results, showcasing an accuracy of 99.61805% and performing 2769.231 times faster. With advancing technology, ANNs present an effective solution for addressing complex antenna design challenges arising from escalating data rate requirements and uninterrupted data transmission. These results open promising avenues for further advancements in antenna design aided by ANN applications.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969224","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this study, the main countries with high coal-fired power plant installation capacity and Türkiye, which are among the first in the world in electricity production in this field, and Türkiye are discussed, and parameters such as the installed power and capacity developments of the coal-fired power plants in these countries, electrical energy production values and CO2 emissions from fossil fuels have been evaluated over the years. Emissions from fossil fuels have been evaluated over the years. In this study, predictions about the future of coal-fired power plants were tried to be made by making projection studies. Analysis results are indicated and interpreted with figures and tables. When projections are made according to the current situation, it is predicted that in 2030 and 2050, China will be the first in coal-fired power plant installed power development and electricity production, and accordingly in CO2 emissions from fossil fuels. In addition, the capacity utilization rates, which are an important parameter regarding the efficient operation of coal-fired thermal power plants and their age, have been determined for certain countries over the years. In this study, the country with the highest capacity ratio, with a capacity ratio of around 90%, was determined as Japan. Today, in connection with the re-emergence of coal with the emergence of the energy crisis, energy production planning, and projection studies gain strategic importance for each country. In the literature, country-based projection studies for coal-fired power plants are insufficient and limited. Comprehensive projection study in this area contributes to the studies in the literature.
{"title":"A Study on The Projection of Coal-Fired Thermal Power Plants","authors":"Nagihan ERSOY, Nuri BİNGÖL, İsmail EKMEKCİ","doi":"10.31202/ecjse.1271128","DOIUrl":"https://doi.org/10.31202/ecjse.1271128","url":null,"abstract":"In this study, the main countries with high coal-fired power plant installation capacity and Türkiye, which are among the first in the world in electricity production in this field, and Türkiye are discussed, and parameters such as the installed power and capacity developments of the coal-fired power plants in these countries, electrical energy production values and CO2 emissions from fossil fuels have been evaluated over the years. Emissions from fossil fuels have been evaluated over the years. In this study, predictions about the future of coal-fired power plants were tried to be made by making projection studies. Analysis results are indicated and interpreted with figures and tables. When projections are made according to the current situation, it is predicted that in 2030 and 2050, China will be the first in coal-fired power plant installed power development and electricity production, and accordingly in CO2 emissions from fossil fuels. In addition, the capacity utilization rates, which are an important parameter regarding the efficient operation of coal-fired thermal power plants and their age, have been determined for certain countries over the years. In this study, the country with the highest capacity ratio, with a capacity ratio of around 90%, was determined as Japan. Today, in connection with the re-emergence of coal with the emergence of the energy crisis, energy production planning, and projection studies gain strategic importance for each country. In the literature, country-based projection studies for coal-fired power plants are insufficient and limited. Comprehensive projection study in this area contributes to the studies in the literature.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Islam ISLAMOV, Agarahim RAHİMOV, Murad JAHANGİROV, Namiq SHUKUROV, Rashid ABDULLAYEV
The paper proposes and tests an effective method for improving the directivity of diffraction-type leaky-wave antennas based on the implementation of a longitudinal change in the profile of the distribution-radiating system due to the variation of the aiming distance according to a given amplitude distribution. It has been established that changing the aiming distance along the aperture according to a theoretically calculated regularity makes it possible to improve the initial directional properties of the antenna: to reduce the maximum level of side lobes, and also to increase the antenna gain.
{"title":"Development of a Technique for Increasing the Directivity of an Antenna Array in the Microwave Range","authors":"Islam ISLAMOV, Agarahim RAHİMOV, Murad JAHANGİROV, Namiq SHUKUROV, Rashid ABDULLAYEV","doi":"10.31202/ecjse.1282892","DOIUrl":"https://doi.org/10.31202/ecjse.1282892","url":null,"abstract":"The paper proposes and tests an effective method for improving the directivity of diffraction-type leaky-wave antennas based on the implementation of a longitudinal change in the profile of the distribution-radiating system due to the variation of the aiming distance according to a given amplitude distribution. It has been established that changing the aiming distance along the aperture according to a theoretically calculated regularity makes it possible to improve the initial directional properties of the antenna: to reduce the maximum level of side lobes, and also to increase the antenna gain.","PeriodicalId":52363,"journal":{"name":"El-Cezeri Journal of Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135969225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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