Chittagong University of Engineering & Technology

About: Chittagong University of Engineering & Technology is a education organization based out in Chittagong, Bangladesh. It is known for research contribution in the topics: Computer science & Renewable energy. The organization has 1200 authors who have published 1444 publications receiving 10418 citations. The organization is also known as: Engineering College, Chittagong & Bangladesh Institute of Technology, Chittagong.

Effects of meteorological parameters on COVID-19 transmission trends in Bangladesh

Abstract: Understanding the influence of meteorological parameters in relation to COVID-19 transmission may be a convenient way to predict the ongoing pandemic towards its adaptive control measures. This study aims to explore the association between COVID-19 cases and meteorological parameters and to predict COVID-19 transmission for an extended period covering different climatic patterns. The number of COVID-19 cases, daily records of rainfall, temperature, relative humidity and wind speed data were collected for April and May 2020 from the eight major divisions in Bangladesh. The basic statistical analyses and auto regressive integrated moving average (ARIMA) using SPSS tool were applied to evaluate and explore association between meteorological parameters and COVID-19 cases and its transmission trend. A greater number of significant positive associations (r = 0.24–0.58) is found to exist between the relative humidity and COVID-19 cases across the cities, while with temperature both positive and negative associations (r = − 0.23 to 0.72) were revealed. Furthermore, both the rainfall and wind speed exhibit positive correlations. ARIMA model portrayed predictive trend of COVID-19 transmission, from its inception on 8 March 2020 to September 2020, in Bangladesh. The month of July showed the highest daily COVID-19 cases prior to lowering at steady rate till September illustrating the influnce of meteorological parameters.

First Tests on the Symmetrical Breakwater Armor Unit Crablock

Abstract: Single layer concrete armor systems are being widely used nowadays in the design of rubble mound breakwaters. Recently, a new concrete armor unit has been developed and applied as single layer armo...

Developing an IoT Based Water Pollution Monitoring System

Abstract: In the area of technological studies Internet of things (IoT) has become an interesting subject matter. It is the interconnection of things with each other over the internet. Average people often assume IoT in phrases of self-sustaining vehicles and smart houses; however, a number of the great programs of the IoT era are in intensely practical fields. One such example is the ‘water pollution monitoring system’. With the growth of the populace and industrialization of nations at some point in the globe, water pollution has ended up a major concern for anyone. With the assist of the era, researchers have added IoT primarily based smart water pollutants tracking machine that ensures a discounted amount of time and power required to provide analytical offerings. In this task, the design of IoT based water pollutants tracking machine is proposed, which can screen the high-quality water in real-time. This device includes a few sensors which degree the water quality parameter inclusive of pH, Total Dissolved Solids (TDS), and temperature. The deliberate qualities from the sensors are prepared with the aid of a microcontroller named Arduino and transmitted to the middle controller this is NodeMcu via Serial Wire communication. Then NodeMcu passes the facts into internet-server via wireless. Finally, sensor results can view internet browser software and phone the usage of the android app. The goal is to make the machine clean for the rural location of Bangladesh, which is an absence at the back of the proper water pollutants tracking gadget. So, remote tracking and guidance focus by sharing statistics in an authenticated manner is the main aim.

A simple multiband patch antenna for application in wireless communication

Abstract: This paper proposes a compact (46×50×0.16 mm3) multiband patch antenna for Wi-Fi, WiMAX, WLAN and satellite applications. The antenna consists of three I shape, two L shape and one F shape patch. The length of the patches and the thickness of Fr-4 substrate are varied to find out the optimized dimensions at which antenna gives the best performance. The antenna has three significant frequency bands having bandwidth of 500MHz (2.10–2.60GHz), 2.80GHz (3.02–5.82GHz) and 2.50GHz (7.00–9.50GHz). The proposed antenna maintains same radiation characteristics for all of the supported frequency bands. For all frequencies the antenna input impedance is matched with 50 Ω feeder lines. The antenna is simulated using CST Microwave Studio software. The simulated VSWR, reflection coefficient, radiation patterns, directivity, half power beamwidth (HPBW), realized peak gains and radiation efficiency of the antenna are presented.