Browsing by Author "Mahdy Rahman Chowdhury"

Now showing 1 - 5 of 5
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    Open Access
    A solution for industrial problem: Predicting the future market price using low amount of data with the help of Time Series Analysis
    (North South University, 2019) Istiak Rahman; Zareen Tasnim; Farzeen Ahmed Bashori; Mahdy Rahman Chowdhury; 1530861642; 1511908042; 1510223642
    Bangladesh has a lot of potentialities and possibilities as a third world country if it utilizes the blessings of technology properly. With the help of recent technology, different time series analysis models have been developed like ARIMA, ARIMAX, SARIMA, SARIMAX, and even a Facebook developed module called Prophet. Nowadays it is possible to detect the future trend of any business given any type of data. We have applied a similar approach to predict sales for one of the flourishing startups of the country named Rokomari.com. The struggle for any company is to sustain amongst its powerful competitors in its emerging years. It becomes easier to ace over the competitors if the company can have a prior preparation of its upcoming challenges. Our effort was to make the journey smoother so that it can sustain in building a flourishing business amongst its competitors. In order to do so, we have worked with “real world” sparse dataset of the company itself. We were successful in predicting their possible sales for coming years using time series models like SARIMA and Fb Prophet. The paper discuses briefly about the significance and possibilities created due to implementation of our custom build software.
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    Open Access
    Energy-Entanglement Relation For Minimal QET Model Using Superconducting Quantum Computers
    (North South University, 2023) Tasin Towsif Rahman; Sibghat Ullah Rayyan Shaikh; Monem Shahriar Sourav; Mahdy Rahman Chowdhury; 1911774042; 1831773042; 1831379042
    In the easiest terms possible, quantum entanglement means that two particles are together in such a way that the actions of one particle affect or cause changes to the other particle no matter the distance between the two particles. These particles could be photons, electrons, etc, and the state that they exist in could be, for example, one particle ‘spinning’ in one direction and the other spinning in the opposite direction. For our experiment, we consider two particles Alice and Bob. The goal of our study is to investigate the degree of breakdown of entanglement between the two for the minimal Quantum Energy Teleportation (QET) Model, during energy teleportation. Entropy is used as a quantitative measure of entanglement. The measurements in the circuit destroy the entanglement that exists between the two qubits when energy is transmitted from "Alice" to "Bob" in the Quantum Energy Teleportation (QET) Model. As a consequence, we use entropy to show the extent of degeneration in the entanglement; in other words, we present two disparities in the amount of transmitted energy and the entanglement expenditure. We investigate entanglement as a quantifiable physical resource in connection to energy in this experiment.
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    Open Access
    Enhanced Third Harmonic Generation (THG) with Graphite Metasurface
    (North South University, 2023) Ybtida Cinderella; Nasim Md Arafat Saikat; Mahdy Rahman Chowdhury; 1921957043; 1911471643
    This project introduces an innovative concept for improving third harmonic generation (THG) at far infrared and terahertz (THz) frequencies by employing ultrathin nonlinear meta surface designs of patterned graphite micro-ribbons. By utilizing the localized plasmonic effects, these configurations make it possible to produce an incident wave that is tightly confined and significantly amplified along the surface of the graphite. Because of the presence of a metallic substrate beneath the graphite micro ribbons, the resonant response bandwidth is reduced, which leads to the absence of any transmission and the development of standing waves within the intermediate dielectric spacer layer. This strategy results in a significant increase in the efficiency with which THGs are converted, one that could be increased by several orders of magnitude. Additionally, the meta surface's resonant frequency can be dynamically modified by changing the Fermi energy of the graphite through either electrical or chemical doping. This can be done to get the desired effect. The stimulation of highly localized plasmons within graphite micro-ribbons are the primary topic of this paper. This stimulation ultimately results in the confinement and intensification of the incident wave along the graphite surface. In addition, the presence of a metallic substrate beneath the graphite micro ribbons results in the induction of zero transmission and the generation of standing waves within the intermediate dielectric spacer layer, which together have the effect of narrowing the bandwidth of the resonant response. In the end, these improvements in the incident field contribute greatly to the gain in the efficiency with which THGs are converted.
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    Prototype of an Eye Gesture Controlled Wheelchair for Paralyzed and Physically Handicapped People
    (North South University, 2019) Uttam Kumar Saha; Md. Shazzad Hossan Chowdhury; Sameul Basher; Mahdy Rahman Chowdhury; 1520611043; 1521488643; 1411270043
    Paralyzed and physically handicapped people either need assistance of others or requires a smart wheelchair to move from one place to another. As for wheelchair, the system needs to be gesture controlled since it is not easy to move body parts of physically handicapped and paralyzed people. This project presents a prototype of eye gesture detection based wheelchair driving system .For applying the instructions obtained from user’s eye movement, a Bot has been utilized as prototype of wheelchair. Moreover, an obstacle sensor has been added in order to avoid accident when any obstacle comes in front of the wheelchair. A webcam has been utilized in this project for obtaining user’s eye movement based instructions and Raspberry Pi B+ has been used as the central controller and processor for decoding and encoding instructions, image processing and system control.
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    Open Access
    Quantum Image Compression Using Espresso Algorithm
    (North South University, 2023) Jannatul Ferdous Mim; Zobayer Islam Abir; AKM Anisur Rahman; Mahdy Rahman Chowdhury; 1912964642; 1921653042; 1912282642
    Our venture into quantum technologies involves the project 'Quantum Image Compression using Espresso Algorithm,' guided by Dr. Mahdy Rahman Chowdhury. With the expertise of research assistant Syed Imad Uddin Shubha . and our ECE team (Jannatul Ferdous Mim, Zobayer Islam Abir, and AKM Anisur Rahman), we explore into the fusion of quantum computing and the Espresso algorithm for image compression. This collaborative effort unfolds through thorough experimentation and analysis, contributing to the ever changing field of quantum information processing. The abstract captures the essence of our exploration, emphasising the intricate interplay between quantum principles and innovative compression techniques in the dynamic context of our project.