AIUB Journal of Science and Engineering (AJSE)最新文献_第4页

Design and Analysis of Iot-Based Remote Load Monitoring and Outage Management System 基于物联网的远程负荷监测与停电管理系统设计与分析

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-09 DOI: 10.53799/ajse.v22i1.552

A. Muntasir, Md. Rifat Hazari, M. Mannan

{"title":"Design and Analysis of Iot-Based Remote Load Monitoring and Outage Management System","authors":"A. Muntasir, Md. Rifat Hazari, M. Mannan","doi":"10.53799/ajse.v22i1.552","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.552","url":null,"abstract":"An essential instrument for the operation of a power system is to monitor and analyze the data to find the fault and rectify it before the system collapses completely. This paper intents to utilize the idea to create a control system that will fulfill objectives like monitoring vital parameters controlling the power distribution, outage management by fault detection based on the variation of Voltage, Frequency, and Current & protection of the Circuit against any significant incidents by isolating the load from utility and flagging the information through feedback to the utility authority. The Project implements the high-end technology for IoT applications that will connect with the Microcontroller to receive the data at regular intervals and post the timestamped data in a cloud platform for remote monitoring and archiving. This innovation can reduce human dependency and overcome the whole outage situation by building a two-way communication that means electricity and information are traded between consumers and utilities to capitalize on the efficiency of a grid system. The proposed model offers intelligent monitoring of the timestamped data with remote access & historical data archiving for a better load profile. An outage management system is designed for the proposed system by intellectual fault detection through Voltage, Frequency & current variation, and isolation of the faulty part from the entire system, maintaining an auto circuit recloser application before the permanent isolation for reducing the human interaction & flagging the outage information & supply emergency backup during the shutdown period, and in the process, helping the power grid from total power outage or blackout.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126019422","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}

引用次数: 0

Effects of biochar and modified biochar on Chromium contaminated soil properties 生物炭及改性生物炭对铬污染土壤性质的影响

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.538

A. Siddika, Afm Masum Rabbani, Z. Parveen, M. Hossain

{"title":"Effects of biochar and modified biochar on Chromium contaminated soil properties","authors":"A. Siddika, Afm Masum Rabbani, Z. Parveen, M. Hossain","doi":"10.53799/ajse.v22i1.538","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.538","url":null,"abstract":"In recent years, increasingly more soils are getting contaminated with organic and inorganic toxins globally due to waste emissions. Among inorganic pollutants, heavy metal like chromium (Cr) is alarming to our environment, even though its environmental management is also ignored. As a result, Cr accumulates in plant tissues at toxic concentrations end up in the food chain. Therefore, pot experiment was conducted to investigate the effects of biochar and modified biochar application on the properties of Cr polluted soils and interaction of Cr with other soil nutrients. Two different biochar viz. rice stubble and saw dust were slow pyrolyzed (450 ± 50ºC) and modified with1M KOH. All biochars were applied at a rate of 20 t ha-1 on soils artificially polluted with Cr at the levels of 0, 100, 200 and 300 µg g-1. The biochars and modified biochars had significant effects (P<0.05) on available K, P, CEC, EC, and N of incubated soils. Therefore, it has convincing evidence that application of biochar and modified biochar is very imperative to improve soil health, ameliorate Cr polluted soils, reduce the amount of carbon produced due to biomass burning and thereby enhances plant growth.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116513736","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}

引用次数: 0

Hybrid Scrum-XP: A Proposed Model based on Effectiveness of Agile Model on Varieties of Software Companies in Bangladesh 混合Scrum-XP:基于敏捷模型在孟加拉国不同软件公司有效性的建议模型

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.353

Bijoya Bose, Nishat Tasnim Khan, Sumaiya Ashreen, Faishal Ahmed Shuvo, Md. Mazid-Ul-Haque, Abhijit Bhowmik

{"title":"Hybrid Scrum-XP: A Proposed Model based on Effectiveness of Agile Model on Varieties of Software Companies in Bangladesh","authors":"Bijoya Bose, Nishat Tasnim Khan, Sumaiya Ashreen, Faishal Ahmed Shuvo, Md. Mazid-Ul-Haque, Abhijit Bhowmik","doi":"10.53799/ajse.v22i1.353","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.353","url":null,"abstract":"The Agile Methodology is a term which refers to a method of software development that is incremental and iterative in nature and is used to manage and incorporate constantly changing needs. This entails decomposing the entire development process cycle into a series of tasks. The process is further divided into a number of sub-tasks, each function is independently. The Agile Development technique, which is a popular and growth-oriented strategy, provides not only speedy project delivery, but also software responsiveness, which leads to total corporate growth and agility. The organization's project management capabilities and performance are improved through the adoption of Agile practices. In their business, the companies employ Agile methods. As a result, the goal of this study is to see how effective agile approaches are in Bangladeshi software organizations. A survey of established software companies in Bangladesh is being conducted to accomplish the objective. The Scrum and XP agile technique is the most widely used according to the findings. It is proposed that Scrum and the XP model be combined to achieve maximum effectiveness and overcome their respective limits.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129562033","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}

引用次数: 0

Single Step Ahead Assessment of Solar Irradiation Using Ann Model Based on Various Combination Of Meterological Parameters 基于不同气象参数组合的人工神经网络模型对太阳辐射的单步预估

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.271

Anuj Gupta

{"title":"Single Step Ahead Assessment of Solar Irradiation Using Ann Model Based on Various Combination Of Meterological Parameters","authors":"Anuj Gupta","doi":"10.53799/ajse.v22i1.271","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.271","url":null,"abstract":"Solar energy is a valuable resource on earth but the availability of solar resources relies on meteorological variables. In this paper, forecasting models using the artificial neural network are developed by changing the input meteorological variables from five to seven. The two years data are used to train the model whereas the testing is performed using one year data on different seasons following single step ahead. The input parameters are relative humidity, pressure, temperature, solar zenith angle, wind speed, wind direction and perceptible water. Three artificial neural network models (ANN-I5, ANN-I6, ANN-I7) are developed to estimate the global horizontal irradiation and performance of all models are measured on the basis of Mean Absolute Percentage Error (MAPE), Relative Root Mean Square Error (RRMSE) and Correlation Coefficient (R2). Result indicates that ANN-I7 shown better performance as comparison to other developed models. The average MAPE and RRMSE of ANN models such as ANN-I7, ANN-I6, ANN-I5 are 14.52%, 16.53%, 18.97% and 20.74%, 22.28%, 24.43% respectively. The ANN-I7 haiving an input meteorological parameters relative humidity, pressure, temperature, solar zenith angle, wind speed, wind direction and perceptible water showed good accuracy as comparison to other two developed models. This study indicates that accuracy of solar irradiation forecasting depends on meteorological parameters. ","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134358187","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}

引用次数: 0

Performance Comparison of Electric Drives for Chopping/Shredding Sugarcane in Sugar Industry 制糖工业中切/切碎甘蔗用电动传动的性能比较

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.282

Vinay Kumar, Sanjiv Kumar

引用次数: 0

Transforming Slum Dwellings into Better Livable Units: An Approach through Minimum Intervention 将贫民窟改造为更宜居的单元:通过最小干预的方法

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.300

S. Tariq, M. Ibrahim, Ashik Vaskor Mannan, Ajmeri Nusrat Shoma

引用次数: 0

A Comparative Study of Fixing One Barrier Varying Another Barrier for a Resonant Tunneling Diode 共振隧道二极管一个势垒改变另一个势垒固定的比较研究

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.567

Tahseen Asma Meem, Shaira Tashnub, Madina Hasan, Mahfujur Rahman

{"title":"A Comparative Study of Fixing One Barrier Varying Another Barrier for a Resonant Tunneling Diode","authors":"Tahseen Asma Meem, Shaira Tashnub, Madina Hasan, Mahfujur Rahman","doi":"10.53799/ajse.v22i1.567","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.567","url":null,"abstract":"In this research paper, effects of fixing one barrier and varying another barrier have been analyzed and compared for a GaAs/Al0.3Ga0.7As based double barrier resonant tunnelling diode for two different models - Hartree Quantum Charge model and semi-classical Thomas Fermi model. VI characteristic graphs are studied to assess the overall performance of both models. The simulations are carried out in a nanoelectronics modelling tool suite – Nano electronic Modelling 5 (NEMO5) considering Non-Equilibrium Green’s Function (NEGF), at room temperature of 300K and biased voltage of 0 to 0.5 V. In this paper, it was demonstrated that a very larger amount of current is supplied by both models when the first barrier is varied and second barrier is fixed in comparison to the first barrier when kept fixed and second barrier is varied. But as quantum charge inside the quantum well is existed in the Hartree model, so overall Hartree model supplied a greater amount of current compared to the Thomas Fermi model. Quantum charge inside its quantum well is not present in the Thomas Fermi model. But a better NDR region is created by the Thomas Fermi model in both varied first barrier-fixed second barrier and fixed first barrier-varied second barrier cases compared to the Hartree model. This NDR region can be used for numerous digital applications. On the other hand, a vast range of analog applications can be used by the Hartree model that produced larger current per unit voltage.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129891221","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}

引用次数: 0

Medbot- Design and Development of Medical Robot for Healthcare Digitalization Medbot——医疗数字化医疗机器人的设计与开发

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.257

Arajit Saha, Md. Mahadi, Hasan Bhuiyan, D. Saha, Sumayea Alam, Md. Saniat, Rahman Zishan, Mahadi Hasan, Durjoy Bhuiyan, Sumayea Saha, Alam Sara

{"title":"Medbot- Design and Development of Medical Robot for Healthcare Digitalization","authors":"Arajit Saha, Md. Mahadi, Hasan Bhuiyan, D. Saha, Sumayea Alam, Md. Saniat, Rahman Zishan, Mahadi Hasan, Durjoy Bhuiyan, Sumayea Saha, Alam Sara","doi":"10.53799/ajse.v22i1.257","DOIUrl":"https://doi.org/10.53799/ajse.v22i1.257","url":null,"abstract":"The main goal of this paper is to make a multifunctional robot along with a database management system named “MEDBOT”. That will reduce the problem of spreading any viral or infectious disease by maintaining social distance. A robot is designed and implemented will replace the ordinary system in the medical sector in a digital way with fewer life risks. Being a multifunctional robot, it can perform as a receptionist, entertainer, nurse, cleaner, and deliveryman. As a nurse, it will check a patient’s temperature, Heart Rate, Oxygen Saturation, and Heart condition in a contactless way. Furthermore, these vitals are easily stored in its database system. These vitals are broadcast on the device’s display and server, where the doctor can quickly monitor them in real-time. A mobile application-based remote-control system is equipped in this robot to control it remotely. Moreover, a disinfecting system and UV-C light are used for sterilizing purposes. The previously invented medical robot can perform one or two tasks, but a revolutionary change will come into the medical sector by making this robot. At last, it can be said that the ‘Medbot’ can reduce infectious disease, save time moreover digitalize the medical industry by doing these works. Finally, building a digital Bangladesh, it will work along with the medical sector as a warrior.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128461353","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}

引用次数: 1

Prediction of Flood in Bangladesh Using Different Classifier Model 基于不同分类器模型的孟加拉国洪水预测

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2023-05-08 DOI: 10.53799/ajse.v22i1.365

Md. Sajid Hossain, Mohammad Zeyad

引用次数: 0

Comparative Study of Single and Double Barrier GaAs/Al0.3Ga0.7As Based Resonant Tunneling Diodes Considering NEGF 考虑NEGF的单、双势垒GaAs/Al0.3Ga0.7As谐振隧道二极管的比较研究

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2022-12-31 DOI: 10.53799/ajse.v21i3.507

M. Hasan, M. Ali, Md. Kamrul Hasan, Shaira Tashnub Torsa, Mahfujur Rahman

引用次数: 0