AIUB Journal of Science and Engineering (AJSE)最新文献_第9页

A Comprehensive Study of Real-Time Vacant Parking Space Detection Towards the need of a Robust Model 面向鲁棒模型的实时车位检测综合研究

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2020-12-31 DOI: 10.53799/ajse.v19i3.80

Rifath Mahmud, A. Saif, D. Gomes

{"title":"A Comprehensive Study of Real-Time Vacant Parking Space Detection Towards the need of a Robust Model","authors":"Rifath Mahmud, A. Saif, D. Gomes","doi":"10.53799/ajse.v19i3.80","DOIUrl":"https://doi.org/10.53799/ajse.v19i3.80","url":null,"abstract":"Detection of vacant parking space is becoming a challenging task gradually. Space utilization and management of vehicle space is now a demandable field of research. Searching for an empty parking space in congested traffic is a time-consuming process. The existing vacant parking space detection methods are not robust or generalized for images captured from different camera viewpoints. Finding a proper parking space in a busy city is really a challenging issue and people are facing this problem on a daily basis. The main purpose of this research is to comprehensively discuss the previous researches of vacant parking space detection and compare them from different aspects. Methods used in previous researches are descriptively discussed along with their advantages and disadvantages. The frameworks of previous researches were compared on six generalized phases and the experimental results are compared in terms of dataset, accuracy, processing time and other performance measures. This research also focuses on the challenges of vision-based vacant parking space detection which will contribute to future researches and researchers can work to overcome these challenges.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131368164","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: 2

YOLO-Based Enhancement of Public Safety on Roads and Transportation in Bangladesh 基于yolo的加强孟加拉国道路和交通公共安全

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2020-09-30 DOI: 10.53799/AJSE.V19I2.91

Anjir Ahmed Chowdhury, Sabrina Kashem Chowdhury, Hanif, Sadia Noor Nosheen, Md. Saniat Rahman Zishan

引用次数: 1

Load Flow Analysis of Dhaka Grid Using PSAT and ETAP and Performance Comparison to PGCB Data 基于PSAT和ETAP的达卡电网潮流分析及与PGCB数据的性能比较

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-12-31 DOI: 10.53799/ajse.v18i3.58

A. Alvi, M. Mannan

引用次数: 0

High Speed OTDM-DWDM Bit Compressed Network for Long-Haul Communication 用于长途通信的高速OTDM-DWDM位压缩网络

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-08-31 DOI: 10.53799/ajse.v18i2.41

Tadbirul Islam, Mohammad Nasir Uddin

引用次数: 2

Gate Length Effect on Gallium Nitride Based Double Gate Metal-Oxide-Semiconductor Field-Effect Transistor 氮化镓基双栅金属氧化物半导体场效应晶体管的栅极长度效应

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-08-31 DOI: 10.53799/ajse.v18i2.43

R. Islam, K. Hasan, A. Mannan, M. Ali, Rokib Hasan

引用次数: 1

Reliability Analysis of Different Cell Configurations of Lithium ion battery Pack 锂离子电池组不同单体结构的可靠性分析

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-08-31 DOI: 10.53799/ajse.v18i2.40

Md. Nahian Al Subri Ivan, S. Devnath, Rethwan Faiz, Kazi Firoz Ahmed

{"title":"Reliability Analysis of Different Cell Configurations of Lithium ion battery Pack","authors":"Md. Nahian Al Subri Ivan, S. Devnath, Rethwan Faiz, Kazi Firoz Ahmed","doi":"10.53799/ajse.v18i2.40","DOIUrl":"https://doi.org/10.53799/ajse.v18i2.40","url":null,"abstract":"To infer and predict the reliability of the remaining useful life of a lithium-ion (Li-ion) battery is very significant in the sectors associated with power source proficiency. As an energy source of electric vehicles (EV), Li-ion battery is getting attention due to its lighter weight and capability of storing higher energy. Problems with the reliability arises while li-ion batteries of higher voltages are required. As in this case several li-ion cells areconnected in series and failure of one cell may cause the failure of the whole battery pack. In this paper, Firstly, the capacity degradation of li-ion cells after each cycle is observed and secondly with the help of MATLAB 2016 a mathematical model is developed using Weibull Probability Distribution and Exponential Distribution to find the reliability of different types of cell configurations of a non-redundant li-ion battery pack. The mathematical model shows that the parallel-series configuration of cells is more reliable than the series configuration of cells. The mathematical model also shows that if the discharge rate (C-rate) remains constant; there could be an optimum number for increasing the cells in the parallel module of a parallel-series onfiguration of cells of a non-redundant li-ion battery pack; after which only increasing the number of cells in parallel module doesn’t increase the reliability of the whole battery pack significantly.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130663802","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: 3

Design and Implementation of a Three-Phase Inverter Operated with different Conduction Modes with Automatic Powerfactor Improvement 不同导通方式三相逆变器功率因数自动改进的设计与实现

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-08-31 DOI: 10.53799/ajse.v18i2.39

Mohammad Halimur Rahman, Md Abdul Mannan, Mohd Muinul Haq Mamun

{"title":"Design and Implementation of a Three-Phase Inverter Operated with different Conduction Modes with Automatic Powerfactor Improvement","authors":"Mohammad Halimur Rahman, Md Abdul Mannan, Mohd Muinul Haq Mamun","doi":"10.53799/ajse.v18i2.39","DOIUrl":"https://doi.org/10.53799/ajse.v18i2.39","url":null,"abstract":"Three phase inverters are widely used to control different industrial process. Power electronics based inverters are very popular for fast response and precise control. In this paper an IGBT based three phase power inverter is proposed. Conventional three different conduction modes of 1200, 1500 and 1800 have been adopted. Micro-controller based firing pulse generation circuit using a special multi-winding transformer and opt-coupler to apply isolated firing pulses for each IGBT has been developed and tested successfully. Simulation and test results of the inverter for three phase resistive as well as inductive loads have been presented. The test results are found to be in good agreement with the simulation outcome and also with the theoretical analysis. The main objective is to make an inverter with selectable conduction modes so that specific mode can be defined for resistive or reactive loads. The required correction for PFI is done by adjusting the percentage of duty cycle firing pulse of IGBT to control the capacitive current. The result of the experiment can be used to design PFI (Power Factor Improvement) units for the small industries and domestic users as well. In this paper a three phase inverter of multiple conduction mode with a switching capacitor power factor improvement (PFI) system is analyzed.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115253086","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: 2

Genre of Bangla Music: A Machine Classification Learning Approach 孟加拉音乐体裁:一种机器分类学习方法

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-08-31 DOI: 10.53799/ajse.v18i2.42

Abhijit Bhowmik, A. E. Chowdhury

引用次数: 3

Social Internet of Things (SIoT) Enabled System Model for Smart Integration of Building‟s Energy, Water and Safety Management: Dhaka City, Bangladesh Perspective 建筑能源、水和安全管理智能集成的社会物联网(SIoT)支持系统模型:达卡市，孟加拉国

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-05-31 DOI: 10.53799/AJSE.V18I1.18

Md. Samin Rahman, M. Kabir

{"title":"Social Internet of Things (SIoT) Enabled System Model for Smart Integration of Building‟s Energy, Water and Safety Management: Dhaka City, Bangladesh Perspective","authors":"Md. Samin Rahman, M. Kabir","doi":"10.53799/AJSE.V18I1.18","DOIUrl":"https://doi.org/10.53799/AJSE.V18I1.18","url":null,"abstract":"Dhaka, being the largest township of Bangladesh City Buildings is excreted by in-migration, a rapid growth of population, withering of living and infrastructure standard, which eventually is threatening overall sustainability and well beings. Modernization and digitalization of building infrastructure is not only an important step towards resolving the problems but also it will be a facilitator for smart, efficient and optimized urbanization. On May 2018, the authors conducted a survey among 51 Residential Building’s owner/building managers, 25 Non-residential Building’s owner/building managers and 25 corporate building’s owner/building managers to find market adoptable IoT solutions for building’s smart efficient energy, water and safety managements. The features requested in this survey are optimized and implemented by the authors and finally, here the system model with simulation results is presented. This system shows promising energy, water resource management optimization and some intriguing factors that validate its objectives, social characteristics, market usability.","PeriodicalId":224436,"journal":{"name":"AIUB Journal of Science and Engineering (AJSE)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125210892","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

Modeling and Simulation of a Synchronous Generator with Rotor Angle Stability and Solve Inter Area Mode of Oscillation in Power System using Power System Stabilizer(PSS) 考虑转子角稳定的同步发电机建模与仿真及电力系统稳定器(PSS)求解区域间振荡模式

AIUB Journal of Science and Engineering (AJSE) Pub Date : 2019-05-31 DOI: 10.53799/ajse.v18i1.20

Md. Lutfur Rahman, Md Abu Hena Shatil

引用次数: 1