Journal of Electronics,Computer Networking and Applied Mathematics最新文献

{"title":"Analytical and Experimental Study of Nano Particles Effect in Engine Cooling System","authors":"Ebisa Kejela, Prof. Rajendiran Gopal","doi":"10.55529/jecnam.41.48.66","DOIUrl":"https://doi.org/10.55529/jecnam.41.48.66","url":null,"abstract":"Water is the conventional coolant in the IC engine cooling system. The most recent developments in nanotechnology have led to improvements in the original uses of Nanoparticles in car engine cooling systems. In this study, Nano fluids formed by using kinds of nanoparticles 〖Al〗_2 O_3 and 〖TiO〗_2 were added to the four-stroke internal combustion engine radiator and compared with the conventional coolant (pure water). The purpose of adding these nanoparticles to base fluid is to improve thermal conductivity of the coolant. First base water is used as coolant and simulation is carried out. Then 〖Al〗_2 O_3 and 〖TiO〗_2 nanoparticles had added in base fluid as coolant and CFD fluent simulation is carried out. The result shows that Nanoparticles of 2% 〖Al〗_2 O_3 is 15.04% enhancement of heat transfer than base fluid and 4% 〖Al〗_2 O_3 increases heat transfer rate to 21.28% while 2% of 〖TiO〗_2 is 14.28%enhancement of heat transfer compared to base fluid and 4% TiO2 increases the rate of heat transfer to 18.69%. 〖Al〗_2 O_3 Nanoparticles shows better result than 〖TiO〗_2 and concentration of nanoparticles has a positive effect on the heat transfer rate of the cooling system. The experimental investigation on stability Nanoparticles dispersion through visualization and UV. visible spectroscopy absorbance measurement is carried out on 〖Al〗_2 O_3 Nano fluid prepared by pH modification and pH~7.5 is relatively more stable. Experiments are performed with pure water and Nanoparticles in coolant separately and results showed that 0.02 concentration of Nanoparticles enhances heat transfer rate by 17.5%. Increases the concentration of nanoparticles and flowrate leads to increases heat transfer rate which leads to improved radiator performance.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"53 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138967809","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}

{"title":"Enhancement of Power Transfer Capability of Transmission Line Using Thyristor Controlled Series Capacitor (TCSC)","authors":"Nigam Bam Malla, Vision Parajuli, Dev Kumar Kalwar, Prabhat Lal Karn, Shishir Aryal","doi":"10.55529/jecnam.41.26.37","DOIUrl":"https://doi.org/10.55529/jecnam.41.26.37","url":null,"abstract":"Electricity demand is increasing with the increase in urbanization and industrialization. And to meet this increasing demand, the power generation system has been rapidly increased. But along with increase in generation capacity, transmission capacity also needs to be increased simultaneously. For this, either new transmission line needs to be added in the network or power transfer capability of the existing transmission line needs to be enlarged. Latter is the more preferred choice as it involves less cost and time than to erect the new transmission lines. Power transfer capability of a transmission line can be improved by the adjustment of various parameters of a power system network such as voltage phase angles of the buses connected by the lines, impedance of the lines, etc. For this several power electronics-based FACTS devices have been developed, which are most effective in manipulating these parameters to control the power flow through the lines. In this paper, the use of thyristor-controlled series capacitor (TCSC) is highlighted. In this paper, TCSC is implemented in series with line, connecting two buses, to reduce line series impedance. From the results, it is seen that TCSC implementation increases power transfer capability and stability limit, while improving voltage regulation.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"29 49","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138624050","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}

{"title":"On Supra iR-Open Set in Topological Spaces and Some Applications","authors":"Sumaya A. Abed","doi":"10.55529/jecnam.41.17.25","DOIUrl":"https://doi.org/10.55529/jecnam.41.17.25","url":null,"abstract":"In this work we introduce the supra iR-open set in supra topological spaces. , a novel class of supra i-open sets. This class of sets exactly lies between supra regular open and supra i- open sets. We also look at its basic characteristics and compare it to other sorts of data supra semi open sets types as supra i- open set, supra regular open, regular open, regular closed, clopen, supra semi regular open set and supra clopen . By using this set , We introduce and define the notion of supra totally iR-continuous , supra iR-irresolute map and investigate some of its properties. We prove that every supra totally iR- continuous function is supra iR-irresolute, every totally i????-continuous function is supra totally iR continuous and any strongly continuous function is supra totally iR-continuous, on the other hand, we give examples to show that the convers may not be true. At last , We have proved some theorem to discuss the properties of supra iR-normal space and supra iR-regular space.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":" 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138615969","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}

{"title":"Strength and Limitation of Biological Paradigm during Pandemic of Covid-19: An Application of Queueing Theory","authors":"Aqsa Ahmed, Nasir Jamal, Umair Saeed","doi":"10.55529/jecnam.41.1.16","DOIUrl":"https://doi.org/10.55529/jecnam.41.1.16","url":null,"abstract":"The coronavirus disorder is an epidemic induced by the SARS-CoV-2 germ. The health region is recognized as one of the most important areas in the service sector due to its direct connection to human well-being, particularly in context of the pandemic COVID-19. The overcrowding of patients in the patient registration department, outpatient department, and pharmacy department is the most important issue facing hospitals these days. The investigation of the patient registration, outpatient, and pharmacy departments of PIMS hospital in Islamabad and Benazir Bhutto hospital in Rawalpindi served as the foundation for this study. Queuing Theory is an extension of operation research and is concerned with the aspect of queues. Additionally, the multiple-server queueing model is used to calculate the performance parameters. The approach of queuing simulation used in this research deals with multiple queues and multiple server models. Poisson distribution is used to estimate the arrival rate and exponential distribution is used to calculate the service rate. The satisfaction level of patients with hospital services during the pandemic (Omicron duration) is measured through the questionnaire. As compared to other departments, the utilization factor is higher in the pharmacy department in both hospitals. From PIMS hospital 44% of patients are satisfied with the service system while from BBH 40% of patients are satisfied with the service system.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":" 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138618844","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}

{"title":"Study and Comparative Analysis of OFDM and UFMC Modulation Schemes","authors":"Karthik Kumar Vaigandla, Mounika Siluveru, Radhakrishna Karne","doi":"10.55529/jecnam.32.41.50","DOIUrl":"https://doi.org/10.55529/jecnam.32.41.50","url":null,"abstract":"In various areas, wireless systems are used. In order to allocate the available time and frequency resources, these wireless systems require flexible mechanisms. With 5G, transmission rates will be higher, latency will be lower and quality of service and channel capacity will be higher. The physical layer must be able to generate flexible waveforms to meet the above requirements. Currently, Orthogonal Frequency Division Multiplexing (OFDM) transmission does not support 5G communication. In the case of 4G/OFDM, there are many problems in terms of out of band emission, spectral efficiency, and peak to average power ratio (PAPR). An alternative transmission scheme Universal Filtered Multicarrier (UFMC) is introduced to address this problem. The paper compares OFDM with UFMC. The purpose of this paper is to discuss Spectral Density, Spectral Efficiency, Signal to Noise Ratio (SNR) and Bit Error Rate (BER). In comparison to OFDM, UFMC provides better performance.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127522852","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}

{"title":"Effect of CoFe2O4 on Dielectric and Conduction Behavior Pb0.75La0.25TiO3 Based Composites","authors":"T. Ram, Akshay Kumar, S. Dwivedi, Mani Kant Jha, S. Sushanth Kumar","doi":"10.55529/jecnam.32.25.32","DOIUrl":"https://doi.org/10.55529/jecnam.32.25.32","url":null,"abstract":"(1-x) (Pb0.75La0.25TiO3)-x (Co2FeO4) where x = 0.50 & 0.60 Ceramic Composites have been successfully synthesized via mechanical mixing method. The substitution of CoFe2O4 with La3+ modified Lead Titanate (Pb0.75La0.25TiO3) in above mentioned stoichiometric proportions on has been explored for temperature dependent electrical properties. The both real and imaginary parts of dielectric permittivity decreases with increasing both temperature as well as ferrite content. The real part of impedance decreases with increasing temperature as well as Co2FeO4 content whereas maxima in imaginary part reveals the presence of temperature dependent dielectric relaxation. Both conductivity as well as dielectric loss increases with increase in Co2FeO4 content in stoichiometric proportion.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114737837","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}

{"title":"Study of the Performance of Wire EDM on Titanium alloy using Taguchi Method","authors":"Anantalal Das, M. Kundu","doi":"10.55529/jecnam.32.33.40","DOIUrl":"https://doi.org/10.55529/jecnam.32.33.40","url":null,"abstract":"In this work, an experiment using wire electro-discharge machining to analyse titanium alloy is described (WEDM). The goal is to examine how various process factors affect a number of process performance indicators, including pulse width, servo reference voltage, pulse current, and wire tension (such as cutting speed, wire rupture and surface integrity).The Taguchi approach was used. Charmilles WEDM has been used in every trial. It was also shown that both peak current and pulse interval can speed up cutting. It has been demonstrated that surface roughness rises with pulse width and falls with pulse interval.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133757070","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}

{"title":"ALLDMD Dissipation Energy Analysis by the Method Extended Finite Elements of a 2D Cracked Structure of an Elastic Linear Isotropic Homogeneous Material","authors":"Bentahar Mohammed","doi":"10.55529/jecnam.32.1.8","DOIUrl":"https://doi.org/10.55529/jecnam.32.1.8","url":null,"abstract":"The analysis of the crack parameters of a material is an important effect for characterizing the state of stress. Nowadays, materials occupy a very necessary place in modern industry for the study of the life of such structure. This article deals numerically the evolution of (ALLDMD) dissipation energy for an initial rectilinear crack of α=0°. Furthermore, the second case study is based on a crack inclined by the orientation angle α=15°, 30°, and 45°. The X-FEM extended finite element method was used. In addition, the linear elastic isotropic homogeneous material was applied. Thus, the 4-node quadratic CPS4R elements were used. The crack is then modeled numerically using the ABAQUS finite element calculation code. Characterization parameters such as ALLDMD dissipation energy and von Mises stress were calculated. In addition, the results obtained concerning the numerical simulation were compared and discussed between the different mesh approximate total size TGA=1, 2 and 3mm. A good correspondence was obtained between the different comparison results concerning the evolution of the Von Mises stress in all the modeling cases of our work.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127419758","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}

{"title":"Design and Control of High Voltage Gain Interleaved Boost Converter for Fuel Cell Based Electric Vehicle Applications","authors":"S. Gopal, K. M. Reddy","doi":"10.55529/jecnam.32.9.24","DOIUrl":"https://doi.org/10.55529/jecnam.32.9.24","url":null,"abstract":"The need for power is raising rapidly all across the world right now. This last period has seen a dramatic increase in the severity of global warming brought on by the earth's climate. Greenhouse gas emissions from customary fossil fuel-depend vehicles have risen to the forefront of environmental concerns as the number of cars on the road continues to rise. Pollution from traditional internal combustion engines is rising at an alarming rate. A growing number of people see renewable energy based techniques as ideal answers to the problems of rising fuel efficiency regulations and falling pollution levels. In recent years, interest in hydrogen's potential as a new energy vector has grown rapidly; this is because hydrogen can be converted to electric energy in a fuel cell (FC), making it a viable option for powering fuel cell electric vehicles (FCEV). In comparison to other fuel cell types, the working temperature range of a Proton Exchange Membrane Fuel Cell (PEMFC) makes it the best option for usage in automobiles. As the value of FC modules is rather low, a further action is necessary for interfacing with utility grids in FC-based power sources. Even though a traditional boost converter may increase the DC bus voltage from the FC to the necessary level by the inverter, doing so at a very high duty ratio reduces the converter's efficiency and effectiveness. In this study, we propose using high-gain interleaved DC-DC converters to fix this issue. To provide the electric vehicle's power train, this research introduces a radial basis function network (RBFN) with maximum power point tracking (MPPT) method for PEMFC. To determine the PEMFC's optimum operating point, the planned NN-MPPT method employs a RBFN. FCEVS require dc-dc converters with more switching frequencies and heavy voltage gains for propulsion. A three-phase high voltage-gain interleaved boost converter (HV-GIBC) is also developed for the FCEV method to achieve high voltage-gain. Power semiconductors are stressed by leakage current fluctuation and voltage fluctuations are lessened by the interleaving method. We evaluate the MATLAB/Simulink platform's Fuzzy Logic controller against the RBFN-based MPPT controller in an FCEV system's performance evaluation.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115322811","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}

{"title":"Hydrological Model Evaluation of Ground, GPM IMERG, and CHIRPS precipitation data for Shabelle Basin in Ethiopia","authors":"Abdinour Abshir Hussein, A. Baylar","doi":"10.55529/jecnam.31.41.60","DOIUrl":"https://doi.org/10.55529/jecnam.31.41.60","url":null,"abstract":"Consistent and accurate precipitation measurement is a fundamental input component of the hydrological model. However, most developing countries, including Ethiopia, lack consistent and precise precipitation measurements. Nevertheless, satellitebased precipitation data may play a crucial role in bridging the data gap and providing precipitation inputs for rainfall-runoff models in regions with limited ground data. The study compares the ground precipitation data from the Ethiopian meteorological agency and SWALIM to the satellite-based GPM_IMERG and CHIRPS precipitation products. HECHMS software was used to model rainfall-runoff simulation, and the study area’s spatial characteristics and model development were processed with ArcGIS and HEC- GeoHMS. Since the data on hand is enough and fit for continuous event assessment, the deficit and constant loss method, a continuous event-based loss method, was tested, and found good model performance results. The onhand 14 years of precipitation and discharge data were divided into seven years for calibration and seven years for validation. Using Nash–Sutcliffe efficiency (ENS), coefficient of determination (R2), Root Mean Square Error (RMSE), and percentage bias objective functions, the performance of the satellite precipitation was evaluated. During calibration periods (Jan 2013 to Dec 2009), the model performance showed ENS values of 0.65, R2 values of 0.68, RMSE values of 0.6, a percent bias of 0.58% for the metrological stations, ENS values of 0.61, R2 values of 0.64, RMSE values of 0.6, a percent bias of 5.38% for CHIRPS, and ENS values of 0.63, R2 values of 0.66, RMSE values of 0.7, and a percent bias of 18.9% for GMP_IMERG satellite precipitation products. During validation periods (Jan 2010 to Dec 2016), the model performance showed ENS values of 0.75, R2 values of 0.78, RMSE values of 0.6, a percent bias of -16.9% for the metrological stations, ENS values of 0.71, R2 values of 0.74, RMSE values of 0.6, a percent bias of -22.12% for CHIRPS2, and ENS values of 0.76, R2 values of 0.76, RMSE values of 0.5, and a percent bias of -0.03% for GPM_IMERG satellite precipitation products. The study showed that the HEC-HMS model performed well and gave very good results for the hydrological model for the CHIRPS and GPM_IMERG rainfall products. The study also indicates that the model outperformed well during the validation period. Overall, the study found that the simulated GPM_IMERG product gave better results than the simulated CHIRPS product.","PeriodicalId":420122,"journal":{"name":"Journal of Electronics,Computer Networking and Applied Mathematics","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130101346","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}