Pub Date : 2024-07-30DOI: 10.53430/ijeru.2024.7.1.0029
Motunrayo Oluremi Ibiyemi, David Olanrewaju Olutimehin
This study investigates the application of predictive analytics to enhance supply chain efficiency and reduce operational costs. The primary objective is to understand how predictive analytics can be leveraged to optimize various aspects of supply chain management, including demand forecasting, inventory management, and logistics. The research methodology involved a comprehensive literature review, coupled with a case study analysis of several organizations that have successfully implemented predictive analytics in their supply chain operations. Key findings reveal that predictive analytics significantly improves demand forecasting accuracy, which in turn optimizes inventory levels, reduces stockouts and overstock situations, and enhances overall supply chain responsiveness. Additionally, predictive analytics helps in identifying potential disruptions in the supply chain, allowing for proactive measures to mitigate risks and maintain continuity. The study also highlights the cost benefits, where organizations reported a notable reduction in operational costs due to improved efficiency and better resource allocation. The conclusions drawn emphasize the transformative potential of predictive analytics in supply chain management, suggesting that its strategic implementation can lead to substantial improvements in efficiency and cost savings. This research underscores the need for organizations to invest in advanced analytics tools and skills to fully harness the benefits of predictive analytics in their supply chain operations.
{"title":"Utilizing predictive analytics to enhance supply chain efficiency and reduce operational costs","authors":"Motunrayo Oluremi Ibiyemi, David Olanrewaju Olutimehin","doi":"10.53430/ijeru.2024.7.1.0029","DOIUrl":"https://doi.org/10.53430/ijeru.2024.7.1.0029","url":null,"abstract":"This study investigates the application of predictive analytics to enhance supply chain efficiency and reduce operational costs. The primary objective is to understand how predictive analytics can be leveraged to optimize various aspects of supply chain management, including demand forecasting, inventory management, and logistics. The research methodology involved a comprehensive literature review, coupled with a case study analysis of several organizations that have successfully implemented predictive analytics in their supply chain operations. Key findings reveal that predictive analytics significantly improves demand forecasting accuracy, which in turn optimizes inventory levels, reduces stockouts and overstock situations, and enhances overall supply chain responsiveness. Additionally, predictive analytics helps in identifying potential disruptions in the supply chain, allowing for proactive measures to mitigate risks and maintain continuity. The study also highlights the cost benefits, where organizations reported a notable reduction in operational costs due to improved efficiency and better resource allocation. The conclusions drawn emphasize the transformative potential of predictive analytics in supply chain management, suggesting that its strategic implementation can lead to substantial improvements in efficiency and cost savings. This research underscores the need for organizations to invest in advanced analytics tools and skills to fully harness the benefits of predictive analytics in their supply chain operations.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"11 29","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141795786","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}
The COVID-19 epidemic has prompted an increase in self-study; as a result, preparation for HSK Certification exams should also be stepped up. The Hanyu Shuiping Kaoshi (HSK) Exam can be taken either digitally or on paper. Students taking an exam through the internet are not limited by time or location when taking the test. The HSK test is designed to objectively and accurately assess a student's level of proficiency in Mandarin Chinese. Examinees' comprehension of the HSK exam's material and the quantity and quality of time spent working through sample HSK questions both play a role in whether or not they pass the exam. In order to help test takers prepare for the HSK, an online practice exam system is required. The primary goal of the online artificial HSK examination system is to allow prospective examinees to attempt to replicate the HSK test through the system and receive the same outcomes as the provisions of the genuine HSK exam. As one of the coordinators of the HSK exam in East Java, Nurul Jadid Probolinggo put this medium through its paces with a group of high school pupils. This article discusses issues of user approval of the program in addition to the analysis of its features
新冠肺炎疫情促使自学人数增加;因此，HSK认证考试的准备工作也应加紧进行。汉语水平考试(HSK)分为数字考试和笔试两种。通过互联网参加考试的学生在考试时不受时间和地点的限制。HSK考试旨在客观、准确地评估学生的普通话水平。考生对HSK考试内容的理解程度、答题时间的数量和质量都影响着考生能否通过考试。为了帮助考生备考HSK，需要一个在线练习考试系统。在线人工HSK考试系统的主要目的是让准考生通过系统尝试复制HSK考试，并获得与真正HSK考试规定相同的结果。作为东爪哇地区HSK考试的协调员之一，Nurul Jadid Probolinggo向一群高中生介绍了这种语言。本文除了对该程序的特点进行分析外，还讨论了用户审批问题
{"title":"As a solution during COVID-19, mandarin language learning system development to support HSK certification exams","authors":"Darmanto, Yulius Hari, Budi Hermawan, Endang Setyawati","doi":"10.53430/ijeru.2023.5.1.0027","DOIUrl":"https://doi.org/10.53430/ijeru.2023.5.1.0027","url":null,"abstract":"The COVID-19 epidemic has prompted an increase in self-study; as a result, preparation for HSK Certification exams should also be stepped up. The Hanyu Shuiping Kaoshi (HSK) Exam can be taken either digitally or on paper. Students taking an exam through the internet are not limited by time or location when taking the test. The HSK test is designed to objectively and accurately assess a student's level of proficiency in Mandarin Chinese. Examinees' comprehension of the HSK exam's material and the quantity and quality of time spent working through sample HSK questions both play a role in whether or not they pass the exam. In order to help test takers prepare for the HSK, an online practice exam system is required. The primary goal of the online artificial HSK examination system is to allow prospective examinees to attempt to replicate the HSK test through the system and receive the same outcomes as the provisions of the genuine HSK exam. As one of the coordinators of the HSK exam in East Java, Nurul Jadid Probolinggo put this medium through its paces with a group of high school pupils. This article discusses issues of user approval of the program in addition to the analysis of its features","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121456974","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}
Pub Date : 2023-05-30DOI: 10.53430/ijeru.2023.4.2.0020
Micheal Rotimi Adu, Isah Osilama Oshiobugie, Tolulope David Makanju
The occurrence of loadshedding under normal operating condition in Distribution Network caused a lot of inconveniences to the consumer. However, there is need to examine the state of the distribution network to know the performance without load shedding under normal condition. This research examines the state of Auchi distribution network without load shedding. In order to achieve the aim of the research data was obtained from the distribution company, the modelling of the distribution network obtained was done using ETAP and the load flow simulation was done using Newton Raphson Algorithm to determine the power flow in the network, Bus voltage, losses along the line and transformer losses. The results of the study show that at 80% loading of the transformers in the network, the voltage supply to the consumer is bad under normal condition, since the two out of three 33 kV bus voltages is below the acceptable range of plus or minus 5% of the nominal voltage. Likewise, almost all 11 kV and 0.415kV voltages in the network is below the acceptable limit of plus or minus 10% of the nominal voltage. Furthermore, the result indicates that active power loss in the network is 0.2MW which is very high. This research therefore recommends that the voltage profile of AUCHI distribution network needs improvement in order to improve the quality of supply. Also, since the supply from the grid is be allocated based on the generating capacity this research also recommends that DISCO in charge of Auchi distribution network should also considering the usage of DG in the network which can perform a dual purpose of voltage improvement and addition of power supplied.
{"title":"Electrical load flow analysis of Auchi distribution network without load shedding","authors":"Micheal Rotimi Adu, Isah Osilama Oshiobugie, Tolulope David Makanju","doi":"10.53430/ijeru.2023.4.2.0020","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.2.0020","url":null,"abstract":"The occurrence of loadshedding under normal operating condition in Distribution Network caused a lot of inconveniences to the consumer. However, there is need to examine the state of the distribution network to know the performance without load shedding under normal condition. This research examines the state of Auchi distribution network without load shedding. In order to achieve the aim of the research data was obtained from the distribution company, the modelling of the distribution network obtained was done using ETAP and the load flow simulation was done using Newton Raphson Algorithm to determine the power flow in the network, Bus voltage, losses along the line and transformer losses. The results of the study show that at 80% loading of the transformers in the network, the voltage supply to the consumer is bad under normal condition, since the two out of three 33 kV bus voltages is below the acceptable range of plus or minus 5% of the nominal voltage. Likewise, almost all 11 kV and 0.415kV voltages in the network is below the acceptable limit of plus or minus 10% of the nominal voltage. Furthermore, the result indicates that active power loss in the network is 0.2MW which is very high. This research therefore recommends that the voltage profile of AUCHI distribution network needs improvement in order to improve the quality of supply. Also, since the supply from the grid is be allocated based on the generating capacity this research also recommends that DISCO in charge of Auchi distribution network should also considering the usage of DG in the network which can perform a dual purpose of voltage improvement and addition of power supplied.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126317387","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}
Pub Date : 2023-04-30DOI: 10.53430/ijeru.2023.4.2.0019
Romana Akter, Taposh Ranjan Sarker, Sanaullah Murad, Ebrahim Shaikh
Fabric structure exhibits a significant impact on the various properties of weft knitted fabric if processing variables such as yarn count, stitch length, machine diameter, and needle gauge are modified. In this study, weft knitted constructions such plain jersey, Lacoste, waffle, fleece, and rib are evaluated in relation to a number of attributes, including dimensional stability, fabric breadth, spirality and bursting strength. According to the study, lengthwise shrinkage reduces as tuck stitch and spirality grow, however widthwise shrinkage rises. The experiment also revealed that weft knit fabric's bursting strength is less affected by variations in fabric structure.
{"title":"Investigating the effect of fabric design on properties of different weft knit fabrics","authors":"Romana Akter, Taposh Ranjan Sarker, Sanaullah Murad, Ebrahim Shaikh","doi":"10.53430/ijeru.2023.4.2.0019","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.2.0019","url":null,"abstract":"Fabric structure exhibits a significant impact on the various properties of weft knitted fabric if processing variables such as yarn count, stitch length, machine diameter, and needle gauge are modified. In this study, weft knitted constructions such plain jersey, Lacoste, waffle, fleece, and rib are evaluated in relation to a number of attributes, including dimensional stability, fabric breadth, spirality and bursting strength. According to the study, lengthwise shrinkage reduces as tuck stitch and spirality grow, however widthwise shrinkage rises. The experiment also revealed that weft knit fabric's bursting strength is less affected by variations in fabric structure.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124962585","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}
This work introduces smart reader by using Raspberry Pi. The system consists of a camera interfaced with computer which receives the printed or hand written text. This work proposes the novel implementation of smart book reader with raspberry pi controller. The system consists of a webcam interfaced with raspberry pi which accepts a page of printed text. The experimental results are done with the help of raspberry pi controller. Controller coding for the Raspberry pi is done through PYTHON language. The audio output is obtained after the captured image is converted to text. The image captured by the camera is converted to text and displayed in the form window and then the text is obtained as audio output. Raspberry pi has the audio port where the output can be heard through the headphone or the speaker. Once the image is converted to text raspberry pi takes few milliseconds to convert it as a voice output. This system is validated with both simulation and experimental verification it achieves the text document is converted with speech for the use of visually impaired people.
{"title":"Design of automated reader for blind person","authors":"V.D Alagdeve, Shubham Khandare, Pratik Wankhede, Gulshan Pathode, Mayuri Nimje, Shruti Counder","doi":"10.53430/ijeru.2023.4.2.0016","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.2.0016","url":null,"abstract":"This work introduces smart reader by using Raspberry Pi. The system consists of a camera interfaced with computer which receives the printed or hand written text. This work proposes the novel implementation of smart book reader with raspberry pi controller. The system consists of a webcam interfaced with raspberry pi which accepts a page of printed text. The experimental results are done with the help of raspberry pi controller. Controller coding for the Raspberry pi is done through PYTHON language. The audio output is obtained after the captured image is converted to text. The image captured by the camera is converted to text and displayed in the form window and then the text is obtained as audio output. Raspberry pi has the audio port where the output can be heard through the headphone or the speaker. Once the image is converted to text raspberry pi takes few milliseconds to convert it as a voice output. This system is validated with both simulation and experimental verification it achieves the text document is converted with speech for the use of visually impaired people.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133150618","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}
Pub Date : 2023-04-30DOI: 10.53430/ijeru.2023.4.2.0022
Lawal Jibril, Ibrahim Maihaja
A new deterministic susceptible-exposed-infectious-vaccinated-removed-pathogen (SEIVRB) cholera epidemic model with combined mass action incidence and saturated incidence rates is proposed and analyzed. A threshold level of vaccine coverage necessary for controlling or eradicating cholera has been determined and analyzed using the next generation matrix approach. It is shown that the higher values of vaccine coverage that are lower than the threshold value significantly reduces the number of infected individuals whenever basic reproduction number is less than unity, and the cholera would persist in the populations whenever the model basic reproduction number exceeds unity. The global stability for cholera free equilibrium state and cholera endemic equilibrium state of the model system is investigated using Lyapunov functional approach and Lasalle invariance principle, which are found to be globally asymptotically stable at both equilibrium states. Numerical simulations and graphical illustrations is presented to support the analytical results found in the study.
{"title":"A Lyapunov functional for vaccination model on the dynamics of cholera epidemic with non-linear incidence of infection","authors":"Lawal Jibril, Ibrahim Maihaja","doi":"10.53430/ijeru.2023.4.2.0022","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.2.0022","url":null,"abstract":"A new deterministic susceptible-exposed-infectious-vaccinated-removed-pathogen (SEIVRB) cholera epidemic model with combined mass action incidence and saturated incidence rates is proposed and analyzed. A threshold level of vaccine coverage necessary for controlling or eradicating cholera has been determined and analyzed using the next generation matrix approach. It is shown that the higher values of vaccine coverage that are lower than the threshold value significantly reduces the number of infected individuals whenever basic reproduction number is less than unity, and the cholera would persist in the populations whenever the model basic reproduction number exceeds unity. The global stability for cholera free equilibrium state and cholera endemic equilibrium state of the model system is investigated using Lyapunov functional approach and Lasalle invariance principle, which are found to be globally asymptotically stable at both equilibrium states. Numerical simulations and graphical illustrations is presented to support the analytical results found in the study.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133418373","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}
Pub Date : 2023-03-30DOI: 10.53430/ijeru.2023.4.1.0018
Thomas Olabode Ale, Rotimi Micheal Adu, Franklin Chibueze Madu, Tolulope David Makanju
The study was aimed at evaluating the performance of Nigeria’s Electric Power System before and during Privatization using Akure 33kV distribution Network as a case study. This is done to ascertain the effectiveness of the Privatization programme that occurred in the Electric Power Sector in Nigeria. The amount of energy served, the peak load supplied and load flow data of the Network for periods of 2010 to 2015 were collated from the daily log entry recording sheets of the 132/33kV transmission substation office in Akure. The percentage transformer loading and power transferred across the line were determined through load flow studies. The cost of energy not served due to faults was evaluated at a rate of NGN 24.30k per Kilo-Watt Hour (KWHr). The analysis was for a period of pre-privatization (2010-2012) and post-privatization (2013-2015). The results from the study indicate that the energy served decreased by 9% from 2010 to 2015 while the cost of energy not supplied increased largely after the Privatization. A decreasing rate in peak load supplied and transformer loadings were also observed during the Privatization. These results show that less customers might have been served or customers being served by this utility system experienced power outages more frequently in the post-privatization period than in the pre-privatization era.
{"title":"Evaluation of Pre and Post-privatization of Nigeria’s electric power system","authors":"Thomas Olabode Ale, Rotimi Micheal Adu, Franklin Chibueze Madu, Tolulope David Makanju","doi":"10.53430/ijeru.2023.4.1.0018","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.1.0018","url":null,"abstract":"The study was aimed at evaluating the performance of Nigeria’s Electric Power System before and during Privatization using Akure 33kV distribution Network as a case study. This is done to ascertain the effectiveness of the Privatization programme that occurred in the Electric Power Sector in Nigeria. The amount of energy served, the peak load supplied and load flow data of the Network for periods of 2010 to 2015 were collated from the daily log entry recording sheets of the 132/33kV transmission substation office in Akure. The percentage transformer loading and power transferred across the line were determined through load flow studies. The cost of energy not served due to faults was evaluated at a rate of NGN 24.30k per Kilo-Watt Hour (KWHr). The analysis was for a period of pre-privatization (2010-2012) and post-privatization (2013-2015). The results from the study indicate that the energy served decreased by 9% from 2010 to 2015 while the cost of energy not supplied increased largely after the Privatization. A decreasing rate in peak load supplied and transformer loadings were also observed during the Privatization. These results show that less customers might have been served or customers being served by this utility system experienced power outages more frequently in the post-privatization period than in the pre-privatization era.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115933960","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}
Pub Date : 2023-02-28DOI: 10.53430/ijeru.2023.4.1.0014
Usen Inemesit, Jasper Ahamefula Agbakwuru
This study aims at providing a model prediction technique for the fatigue life of offshore steel risers using a hybrid of finite element analysis and the artificial neural network (FEA-ANN) model. A 200 days’ environmental load from Forcados sea state in West Africa offshore was used in training the FEA-ANN model to predict fatigue. The prediction result showed that the mean square error (MSE) was 0.3329 and the analysis from the regression was 0.9999. The result from the training showed a high performance and the regression analysis of the model was seen to be good.
{"title":"Model prediction of fatigue damage on offshore steel risers due to wave loading using FEA and ANN: A case of Forcados Offshore, Nigeria","authors":"Usen Inemesit, Jasper Ahamefula Agbakwuru","doi":"10.53430/ijeru.2023.4.1.0014","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.1.0014","url":null,"abstract":"This study aims at providing a model prediction technique for the fatigue life of offshore steel risers using a hybrid of finite element analysis and the artificial neural network (FEA-ANN) model. A 200 days’ environmental load from Forcados sea state in West Africa offshore was used in training the FEA-ANN model to predict fatigue. The prediction result showed that the mean square error (MSE) was 0.3329 and the analysis from the regression was 0.9999. The result from the training showed a high performance and the regression analysis of the model was seen to be good.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123934143","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}
Pub Date : 2023-01-30DOI: 10.53430/ijeru.2023.4.1.0068
Kayode James Adedoyin, Funminiyi Michael Oyekunle, John Simon
This research was designed to perform linear attenuation calculations for ordinary concrete both through simulation and experiment. The linear attenuation coefficient is an essential parameter for radiation shielding design for both source transport casks and storage bunkers. The shielding properties of concrete designed with Serpentine aggregates of different granule sizes were investigated. The simulation was performed using Radpro computer Software while the experiment involved sourcing for local Serpentine rock, crushing into four different granule sizes of 5 mm, 10 mm, 15 mm and 20 mm respectively and casting the concrete samples, exposure of the samples to gamma and neutron radioactive sources and monitoring with a radiation survey meter, sample weight measurements and concrete sample crushing using a load testing machine for determination of the concrete compressive strength. The results of the linear attenuation calculations showed that there was high consistency in the values obtained by simulation with those obtained via experiment. Very high linear attenuation property was observed when the serpentine concrete samples were exposed to a neutron source, which corroborates the fact that Serpentine rock is a Boron-rich mineral and Boron is known to have high neutron absorption property. The experimentally determined linear attenuation coefficients showed that the values at 15 mm aggregate sizes were higher than those at 5 mm, 10 mm and 15 mm sizes respectively, which demonstrates that better shielding optimization, will be obtained when the concrete cask is fabricated with 15 mm aggregate size.
{"title":"Determination of linear attenuation coefficient of aggregate serpentine concrete exposed to gamma and neutron radioactive sources","authors":"Kayode James Adedoyin, Funminiyi Michael Oyekunle, John Simon","doi":"10.53430/ijeru.2023.4.1.0068","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.1.0068","url":null,"abstract":"This research was designed to perform linear attenuation calculations for ordinary concrete both through simulation and experiment. The linear attenuation coefficient is an essential parameter for radiation shielding design for both source transport casks and storage bunkers. The shielding properties of concrete designed with Serpentine aggregates of different granule sizes were investigated. The simulation was performed using Radpro computer Software while the experiment involved sourcing for local Serpentine rock, crushing into four different granule sizes of 5 mm, 10 mm, 15 mm and 20 mm respectively and casting the concrete samples, exposure of the samples to gamma and neutron radioactive sources and monitoring with a radiation survey meter, sample weight measurements and concrete sample crushing using a load testing machine for determination of the concrete compressive strength. The results of the linear attenuation calculations showed that there was high consistency in the values obtained by simulation with those obtained via experiment. Very high linear attenuation property was observed when the serpentine concrete samples were exposed to a neutron source, which corroborates the fact that Serpentine rock is a Boron-rich mineral and Boron is known to have high neutron absorption property. The experimentally determined linear attenuation coefficients showed that the values at 15 mm aggregate sizes were higher than those at 5 mm, 10 mm and 15 mm sizes respectively, which demonstrates that better shielding optimization, will be obtained when the concrete cask is fabricated with 15 mm aggregate size.","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127593060","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}
Pub Date : 2023-01-30DOI: 10.53430/ijeru.2023.4.1.0011
Agus Muldyanto, Purwanto
Ahmad Yani International Airport is located in Semarang City, Central Java, Indonesia. Runway length is 2650 x 45 m, located at an altitude of 3 meters above sea level and coordinates 06°58′17″S 110°22′27″E with flexible pavement. For subgrade CBR value of 3%. The purpose of this study is to evaluate the thickness requirements of runway pavement by comparing the calculation results with three methods, namely California Bearing Ratio (CBR) by analytical method, while for the graphical method by using the Load Classification Number (LCN) and Federal Aviation Administration (FAA) methods, according to the aircraft the biggest plan at the airport is the Boeing 737-900ER aircraft type. To get results that are safe, comfortable and economical. The basis for this calculation is subgrade soil with a CBR value of 3%. The results of the comparison of the three methods are LCN: FAA: CBR, namely 1: 1.14:1.55. From this case for the most efficient pavement thickness using the LCN method
{"title":"Comparison analysis of flexible pavement runway layers between CBR, LCN, and FAA methods","authors":"Agus Muldyanto, Purwanto","doi":"10.53430/ijeru.2023.4.1.0011","DOIUrl":"https://doi.org/10.53430/ijeru.2023.4.1.0011","url":null,"abstract":"Ahmad Yani International Airport is located in Semarang City, Central Java, Indonesia. Runway length is 2650 x 45 m, located at an altitude of 3 meters above sea level and coordinates 06°58′17″S 110°22′27″E with flexible pavement. For subgrade CBR value of 3%. The purpose of this study is to evaluate the thickness requirements of runway pavement by comparing the calculation results with three methods, namely California Bearing Ratio (CBR) by analytical method, while for the graphical method by using the Load Classification Number (LCN) and Federal Aviation Administration (FAA) methods, according to the aircraft the biggest plan at the airport is the Boeing 737-900ER aircraft type. To get results that are safe, comfortable and economical. The basis for this calculation is subgrade soil with a CBR value of 3%. The results of the comparison of the three methods are LCN: FAA: CBR, namely 1: 1.14:1.55. From this case for the most efficient pavement thickness using the LCN method","PeriodicalId":423246,"journal":{"name":"International Journal of Engineering Research Updates","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130139690","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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