Department of Computer Science and Engineering (CSE)

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    Analysis of growth and development data of Meharan
    (International Centre for Diarrhoeal Diseases Research Bangladesh:Dacca, 1980-06) Khan, Moslemuddin
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    GoZayaan and its journey to normalizing post-pandemic travelling
    (BRAC University, 2023-03) Sweety, Sahida Akter; Rahman, Md. Mizanur
    The development of online tour operators has changed the traditional travel marketplace. The Asia-Pacific Region has become the most lucrative market for online travel agencies (OTAs), which are gaining popularity due to their use of innovation to appeal to a tech-savvy millennial consumer base. (Market Research Future, 2019). GoZayaan Ltd., a dominant competitor in the Bangladeshi OTA market, launched a similar but more lucrative offering in February 2020. As more and more individuals in the world are able to put aside money for fun activities, tourism is flourishing. People who have more money to spend on themselves or their families are more likely to want to go on vacation. GoZayaan is one of the largest online travel agencies (OTAs) available. In this paper, we will examine the past travel industry's struggles with COVID-19 and its subsequent sluggish but steady recovery so that business as usual may resume.
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    BRAC chief gets WISE prize
    (The Independent, 2011-11-02) The Independent
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    Linear Polarization Switchable Patch Array Antenna using Magic-T Bias Circuit and Orthogonal Feed
    (Department of Computer Science and Engineering, CUET, 21-Nov-2013) Hossain, Md. Azad; Chowdhury, Piyas; Hossain, Quazi Delwar; Goopta, Rubell Sen; Rahman, Muhammad Asad
    In this paper, a linear polarization switchable patch array antenna is proposed. The orthogonal feed circuit and magic-T circuit is introduced to realize the proposed array antenna. The advantage of the magic-T circuit is the excellent isolation between the RF signal and the switching bias signal. The microwave integration technology is effectively employed to realize proposed linear polarization switchable array antenna. The proposed array antenna consists of four patch elements and 16 PIN diodes. In order to realize the ±45º polarization switching, four switching diodes are integrated with each patch elements. Using the ON/OFF condition of the diodes, the polarization axis can be easily switched to ±45º. The array antenna is realized in very simple and compact structure as all the antenna elements, feeding circuit and bias circuit are arranged on both sides of a dielectric substrate. The ability of the proposed array antenna to switch the polarization axis at ±45º at 10 GHz (X band) is confirmed by the experimental investigation.
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    Class Attendance System Based on Facial Recognition
    (Daffodil International University, 2019-12-05) Shohagh, Md. Moynul Hasan; Ahmed, Iftakhar; Tomal, Lingkon Ahmed; Hossain, Md. Imtiaj
    The easiest technique to separate each other's personality by the face. Face acknowledgment is an individual distinguishing proof framework that utilized individual facial qualities to recognize an individual's character. The human face affirmation system is basically in two-organize, for example, facial discovery and the other is facial acknowledgment. The stage is then created as a model of replication and facial acknowledgment models just as created by one of the many propelled inquire about biometrics innovations. There are numerous kinds of systems that are currently prominent with cutting edge face recognition examples, for example, Eigen faces, angling strategies, and the viola-jones calculation. Viola-jones calculation gives higher exactness than different methods. Human Face Recognition Using Open CV Hidden Markov Model (HMM) of this undertaking with face acknowledgment method. The necessities components of this venture are Open CV, Django, My SQL, and python. For this venture, we utilize a few catchphrases, for example, face acknowledgment, Viola-jones, My SQL, python, Open CV. For more expansion, there is an enormous number of utilizations from this facial acknowledgment venture, this undertaking can be broadened that various parts and sizes can be recognized in various pieces of the face.
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    Radiation from a slot antenna in an anisotropic plasma
    (Department of Electrical and Electronic Engineering, 1988-08) Joarder Kamruzzaman; Abdul Matin, Dr. Md.
    Radiation from a slot antenna in an anisotropic plasma with the static magnetic field in arbitrary direction has been investigated. The field distributions at the slot aperture have been derived assuming transverse electric excitation at the feed point and are found to support plane waves of both ordinary and extraordinary modes. Using the aperture fields as equivalent electric and magnetic current sheets the. fields outside the slot are derived in triple Fourier integral forms which are evaluated by residue theorem and saddle point method to obtain the radiation field. Numerical calculations of the time averaged Poynting vector were carried out for a half wavelength slot antenna and for plasma parameters corresponding to the region (a) of Clemmow- Mullali-Allis (CMA) diagram .. The radial component of the power flow vector normalized by the maximum power density for a half-wave slot in free-space is plotted to obtain the directional pattern. Plots of the directional pattern show that two strong pencil beams are radiated - one along the ground plane in a direction perpendicular to the slot axis and the other perpendicular to the plane of the slot. The radiation is dominated by the ordinary-mode power with a comparatively negligible extraodinary-mode power. With the static magnetic field in the yz-plane of an xyz-system, the inclination of the static magnetic field does not significantly influence the radiation pattern of an x-directed slot but has considerable effect for y and z-directed slots.In the latter cases. the beam maxima are also slightly tilted from the z and y-axes due to the lack of propagation symmetry in the yz-plane.
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    Practices and challenges of alternative assessments at government primary schools in Bangladesh: teachers’ perceptions
    (BRAC University, 2021-09) Rahman, Marzia; Mim, Shamnaz Arifin
    Bangladesh's existing summative assessment system, especially in primary education, does not support the students' holistic development. To overcome this barrier, the concept of alternative assessment came into place. However, teachers' perceptions are essential before any reform in education as they will be implementing that in the classroom. Therefore, this study intended to determine the perceptions of the government primary schools' teachers regarding the practices and challenges of alternative assessment. I chose the qualitative research method with purposive sampling for this study. I collected data from 18 teachers of 6 different schools in Dhaka city through individual phone interviews, focus group discussions, lesson planning, and student copies. The data showed that though the teachers are aware of the significance of alternative assessment, they do not have enough knowledge and face numerous challenges while implementing it. The reasons they mentioned are lack of teachers, teacher-student ratio, class duration, workload, parents' pressure for taking summative assessments, and lack of training. Thus, the study proposes for the life-long learning orientation of the teachers along with proper monitoring and evaluation of those learning, besides providing the teachers with adequate support and resources so that they can implement the alternative assessments in their classrooms.