- All Volumes
- Volume 33, issue 1, 2023 (5 papers)
- Volume 32, Issue 1, 2022 (6 papers)
- Volume 32, Issue 2, 2022 (5 papers)
- Volume 31, Issue 1, 2021 (6 papers)
- Volume 31, Issue 2, 2021 (6 papers)
- Volume 30, Issue 1, 2020 (7 papers)
- Volume 30, Issue 2, 2020 (6 papers)
- Volume 29, Issue 1, 2019 (6 papers)
- Volume 29, Issue 2, 2019 (6 papers)
- Volume 21, Issue 1, 2014 (12 papers)
- Volume 16, Issue 1, 2012 (10 papers)
- Volume 19, Issue 2, 2012 (13 papers)
- Volume 20, Issue 3, 2012 (13 papers)
- Volume 14, Issue 2, 2011 (10 papers)
- Volume 12, Issue1, 2010 (16 papers)
Techno‑Economic Analysis of Off-Grid and Grid-Connected Solar PV Systems for an University Building
Corresponding Author : Muhammad Mahamood Hasan (muhammad.hasan-ipe@sust.edu)
Abstract : To meet daily energy demands, the world depletes all natural resources, especially fossil fuels, resulting in rapid depletion of natural fuel reserves and irreversible environmental damage. In today's world, there is an urgent need to replace fossil fuel-derived energy with renewable energy. Solar energy, as an inexhaustible and abundant renewable energy source, is gaining popularity worldwide, including in Bangladesh, due to its geographical location and climate. The current research project aims to design photovoltaic (PV) energy systems, including grid-connected and…
Group Delay Moment of Cepstrum for Formant Estimation of High-Pitched Noisy Speech
Corresponding Author : Husne Ara Chowdhury (husna-cse@sust.edu)
Abstract :
The estimation task of formant frequencies is challenging for some spectral estimation issues. However, it is significant in the female or child speech-processing arena. This paper proposes a method for calculating the formant frequencies of high-pitched speech employing third-order group delay moment (GDM) of cepstrum. The GDM is a time domain equivalent signal estimated using the inverse discrete Fourier transform (DFT) of group delay spectrum (GDS). The GDS is calculated from the cepstrum. The stabilized spectral root cepstrum (SRC)…
Investigation on opacity of gaseous stars
Corresponding Author : Syed Badiuzzaman Faruque (awsbf62@yahoo.com)
Abstract :
Following Sir A.S. Eddington’s work on the interior of gaseous stars, we derive a simple equation that gives opacity of a star which depends on the mass of the star and another stellar parameter. We compare our result with the existing result of Kramer. We conclude that massive gaseous stars have lower density and higher temperature than low mass gaseous stars.
Microcontroller based Digital System for Monitoring and Analyzing Seismic Activity
Corresponding Author : Ridwanul Hasan (ridwanulhasan11@gmail.com)
Abstract :
An earthquake is a devastating natural disaster that can have a significant negative impact on our civilization. To decrease the damage from an earthquake and save several lives, we need to gather deep knowledge about seismicity and develop a seismic activity analyzer to record the ground motion caused by an earthquake. This article presents the development method of an Arduino-based low-cost electric device that can be constructed easily to detect and graphically present any seismic activity with a warning…
An Analysis of Seismic Risk for the Building Stocks in the Sylhet City Corporation, Sylhet, Bangladesh: A Case Study on Ward No. 1
Corresponding Author : Najmul Kabir (n.kabir-gee@sust.edu)
Abstract :
Bangladesh is one of the most earthquake-prone countries in the world because of the difference in energy between the Indian and Burma plates. Frequent earthquakes could lead to massive loss of property and destruction. This study aims to determine the seismic risk of building stocks in Sylhet City Corporation (SCC). Amongst 28 wards, Ward No. 1 was selected, as it is one of the preferable residential areas and has almost 2143 buildings. By following Sloven’s formula (1960), 320 buildings…
Economic Feasibility of Hydroponics Production System under Polyhouse: A Case Study in Gazipur, Bangladesh
Corresponding Author : Farzana Raihan (fraihan-for@sust.edu)
Abstract :
Hydroponics system is more input-intensive that requires a large amount of investment than the conventional crops production system. There is a need for economic analysis of the hydroponics for emerging growers in Bangladesh. The study aims to find out the economic feasibility of this production system and compare it with the traditional system. To do so, this study employed the case-study methodology to evaluate the profitability and feasibility of the farm, which uses this system. A thorough inspection of costs…
Sacred places and spiritual beliefs can enhance biodiversity conservation: a case study from the north-eastern Bangladesh
Corresponding Author : Fahmida Sultana (fahmida-fes@sust.edu)
Abstract :
Conservation of biological diversity is one of the most challenging issues in the present era. The role of religious beliefs in conserving biodiversity is well appreciated and religious institutions are often integrated into the conservation action plans. However, we still lack an explicit understanding of the efficacy of these religious institutions and different beliefs in conserving biodiversity. We collected vegetation and animal data from the sacred places of north-eastern Bangladesh. Key respondents survey was also carried out to understand the…
River channel shifting over the last 50 years of Upper Brahmaputra River, Bangladesh
Corresponding Author : Md Shofiqul Islam (shofiq-pme@sust.edu)
Abstract :
River erosion in the Brahmaputra basin is a common phenomenon, but it also causes adverse effects on human beings and the environment. This study illustrates the dynamics of channel shifting and bank erosion for the last five decades of the mighty Brahmaputra River. It was found that the Brahmaputra River was expanding/widening over time and is about 45% from its previous width in 1972. During 1972-2020, a total of 199.00 sq. km of land (agriculture/vegetation) area was eroded by the…
A Combined BWM & TOPSIS Approach for Supplier Selection: A Case Study of a Pharmaceutical Company in Bangladesh
Corresponding Author : Chowdury Md Luthfur Rahman (clr-ipe@sust.edu)
Abstract :
Supplier selection is a critical activity having a substantial impact on the efficiency and effectiveness of the entire supply chain. As the procurement of pharmaceutical raw materials involves multiple global suppliers, proper evaluation and selection of the best supplier are necessary for optimizing costs, enhancing productivity, and increasing profitability. The purpose of this article is to present a comprehensive method of pharmaceutical supplier selection using the combination of the Best Worst Method (BWM) and the Technique for Order of Preference…
CFD Analysis of Blood Flow through Bifurcated Carotid Artery (of Human): Newtonian vs. Non Newtonian Blood Model
Corresponding Author : Md. Syamul Bashar (md.syamul-mee@sust.edu)
Abstract :
Blood behaves like either a Newtonian or Non-Newtonian fluid depending on the shear stress it experiences. In the current study, a 3D model of a human bifurcated carotid artery was used to get insights into the differences between Newtonian and Non-Newtonian blood flow. As the experimental or numerical setup will be made simpler by representing blood as a Newtonian fluid. We are interested in whether it makes sense to represent blood as a Newtonian fluid. Fluent (ANSYS, 15) software was…