scispace - formally typeset
Search or ask a question
Institution

Chittagong University of Engineering & Technology

EducationChittagong, Bangladesh
About: Chittagong University of Engineering & Technology is a education organization based out in Chittagong, Bangladesh. It is known for research contribution in the topics: Renewable energy & Dielectric. 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.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, the properties of sodium dodecyl sulfate in aqueous amino acid systems have been studied through ultrasonic velocity techniques at different temperature as a function of concentration.
Abstract: Acoustic and aggregation properties of sodium dodecyl sulfate in aqueous amino acid systems have been studied through ultrasonic velocity techniques at different temperature as a function of concentration and at different temperature (288.15, 293.15, 298.15, 303.15, 308.15, 313.15, 318.15 and 323.15 K) and atmospheric pressure using density and sound velocity analyzer (DSA 5000, Anton paar, Austria). Densities and ultrasonic velocity of sodium dodecyl sulfate in aqueous amino acid have been measured and from the experimental data, adiabatic compressibility (βS), apparent molar adiabatic compressibility (φk), critical micelle concentration (CMC), acoustic impedance (Z), relative association (RA) and molar sound velocity (Rm) have been calculated. The results show significant information about acoustic properties of sodium dodecyl sulfate (solute-solute interactions, aggregation behaviour, relative association and structure formation) in aqueous and aqueous amino acid solution.
Book ChapterDOI
01 Jan 2022
TL;DR: In this paper , an automated method for detecting emergency vehicles is implemented, which includes a convolutional neural network (CNN) and transfer learning technique with VGG16's fine-tuned model is employed for emergency vehicle detection.
Abstract: In densely populated cities, emergency vehicles getting caught in traffic is a regular occurrence. As a result, emergency vehicles arrive late, resulting in asset and human life losses. It is critical to treat emergency vehicles differently to avoid losses. The purpose underlying this research is to preserve human lives and reduce losses. For this, an automated method for detecting emergency vehicles is implemented. Ambulance and fire trucks are considered an emergency, and other vehicles are considered non-emergency vehicles in the proposed method. Initially, it identifies several vehicles from an image. The YOLOv4 object detector accomplished this part of the method. The identified vehicles are the region of interest for the rest of the research. Finally, the method classifies the vehicles into emergencies or non-emergencies. This study contributes by developing a model based on rigorous testing and analysis and includes a viral algorithm in deep learning: convolutional neural network (CNN). Furthermore, the transfer learning technique with VGG16’s fine-tuned model is employed for emergency vehicle detection. On the Emergency Vehicle Identification v1 dataset, this model had an average accuracy of 82.03%.
Journal ArticleDOI
TL;DR: In this paper , the physical properties of MAX phase borides, M2GaB (M = Sc, V, Nb, Ta), aided by the density functional theory (DFT) for the first time were explored.
Abstract: This study explored the physical properties of MAX phase borides, M2GaB (M = Sc, V, Nb, Ta), aided by the density functional theory (DFT) for the first time. The optimized lattice constants were obtained by minimizing the total energy. We checked the thermodynamic stability by computing the formation energies. We calculated the electronic band structure, density of states (DOS), and charge density mapping to reveal the electronic ground state and bonding nature. The computed stiffness constants (Cij) confirmed the mechanical stability of the investigated compounds. Young's modulus, shear modulus, bulk modulus, and Poison's ratio have been computed using Cij. We calculated the Pugh's ratio, Poisson's ratio, and Cauchy pressure to judge the ductility/brittleness. The Vickers hardness values were calculated. The anisotropic properties of M2GaB compounds were studied by the elastic moduli's directional projections and the anisotropy indices' calculations. We have discussed the acoustic behavior of the M2GaB phases. We have also investigated the Grüneisen parameter, the Debye temperature ϴD, the thermal expansion coefficient, the specific heat, the Helmholtz free energy, the entropy, the internal energy, and the lattice thermal conductivity (Kph) of these borides. To determine the suitability as thermal barrier coating (TBC) materials or whether the compounds are appropriate for high-temperature applications, the minimum thermal conductivity (Kmin) and melting temperature (Tm) have also been calculated. The compounds' dynamical stability was examined using the phonon dispersion curves. The optical parameters have been studied, and it has been found that these compounds are compatible as coating materials to reduce solar heating.
Book ChapterDOI
01 Jan 2020
TL;DR: In this paper, the main concern of this chapter is to rethink residential setback and maximum ground coverage (MGC) rules of BNBC from a sustainable regeneration strategy perspective and to suggest several ideas of creating green spaces that can be taken into consideration to recover and enrich the sustainable environmental quality of the urban areas.
Abstract: At the moment urban agglomeration sees how cities grow and expand within a shorter period by overlooking the existence of natural ecosystem and green spaces. Natural and built components of the urban environment are the main focal point for sustainable regeneration strategies of a city, but unfortunately the small-scale green areas which are closed to people in the cities are given poor attention and as a result various environmental problems are created. This phenomenon raises globally growing concern for sustainable urban development. To ensure sustainable development and healthy living environment, every country sets some obligatory codes of development. In Bangladesh to control urban development and boost living environment, Bangladesh National Building Code (BNBC), a comprehensive document, is enacted as officially obligatory codes of development in urban areas, in which setback and maximum ground coverage (MGC) are the two major and foremost important rules to maintain for better area planning. Chittagong is the second largest city and commercial capital of Bangladesh and is enriched with mountains, forest, rivers, canals, coastal belt, ancient shrines, and historical structures. In Chittagong city, urban areas become a junk of concrete with its grey pockets lacking green spaces resulting from insensible planning and irresponsible behavior of its citizen. The Anannya Residential Area was developed in 2004 by Chittagong Development Authority (CDA) in Chittagong City which is not fully developed yet. The main concern of this chapter is to rethink residential setback and MGC rules of BNBC from a sustainable regeneration strategy perspective and to suggest several ideas of creating green spaces that can be taken into consideration to recover and enrich the sustainable environmental quality of the urban areas.
Proceedings ArticleDOI
01 Feb 2019
TL;DR: In this paper, a microstrip line feed elliptical slot monopole antenna with an intention to use in C-band (4-8 GHz) is proposed in this communication.
Abstract: A novel and subtle design of a circularly polarized microstrip line feed elliptical slot monopole antenna with an intention to use in C-Band (4–8 GHz) is proposed in this communication. Due to notable as well as remarkable performances, this small and compact antenna with ample applications in the arena of wireless communication upholds its strong position among the previous work of similar types. For designing and simulating the proposed antenna for exploration of its feasibility to use in the C-band wireless applications especially satellite-based communication system, CST MW studio is used. Different categories of calculations and performance studies have been performed while maintaining a suitable environment of free space for wireless communication. The antenna with overall dimension of $\pmb{50}\ \mathbf{mm}\ \pmb{\times \ 30} \ \mathbf{mm} \ \pmb{\times 0.836}$ mm, where the substrate is used is Teflon and Copper is used as radiating patch as well as ground plane, is placed for evaluating its performance in respect of return loss, radiation and total efficiency, VSWR, gain, directivity, direction of surface current, axial ratio (AR) bandwidth, and reduction of cross polarization (XP). An impressive return loss (-41.7 dB) at the resonance frequency and suppression of XP of 33.50 dB have been accomplished with other marvelous results.

Authors

Showing all 1219 results

Network Information
Related Institutions (5)
Bangladesh University of Engineering and Technology
7.6K papers, 83.9K citations

89% related

University of Dhaka
9.8K papers, 136.4K citations

83% related

Tomsk Polytechnic University
13.2K papers, 103.7K citations

79% related

Universiti Malaysia Pahang
9.5K papers, 104.4K citations

78% related

University of Engineering and Technology, Lahore
7.9K papers, 82.3K citations

77% related

Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
20234
202240
2021243
2020241
2019228
2018119