Browsing by Author "Hasan, Mahbubul"

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A Software For Managing Smart Diagnostic Center
(Daffodil International University, 2019-05) Hasan, Arif; Hasan, Mahbubul
Our main objective is to plan and smart diagnostic system that will improve emergency diagnostic center experience for patients and medical specialist. The entire framework will keep running internet through websites. `Clients will have felicity to sign in form wherever with web association. After that they will almost certainly different undertakings that are intended for them. Clients are classified in their three gatherings patients’ doctors and management. The essential target is to concentrate on each client who can get our administration and get profit. A specialist can distinctive shorts of patients and the quantity of patients additionally change from specialist to specialist. A specialist can have different number of patients and admin can accept that specialist will require major of distributive storage. Admin can designate a fixed distributed storage for every specialist. They can request additional capacity agreeing their interest and they will be search for their interest. The patients will have some apportioned space which they can use to keep their data. Remembering the objective, the framework we created fells is as an interpersonal organization where data’s are the more close and pertinent for each client. This report contains the full subtleties of the framework.
Optical fiber for terahertz wave
(Department of Electrical and Electronic Engineering, Islamic University of Technology, 2017-11-15) Hoque, Shifatul; Rahman, Ziaur; Tajwar, Tasin; Hasan, Mahbubul
Terahertz radiation occupies a middle ground between microwaves and infrared light waves known as the terahertz gap, where technology for its generation and manipulation is in its infancy. The frequency band of 0.1-10 THz, known as THz band has brought potential applications in many important fields. For wave propagation THz systems use free space as medium. But in free space waves face many difficulties which is very big issue for wave propagation. So we have to use guided transmission instead of unguided transmission. In the mean time many guided transmission line has many kinds of deprivation such as effective material loss, confinement loss, bending loss, dispersion loss, power fraction issue etc. So we had decided to make a porous core fiber which has less losses than other PCF. Mainly we have been inspired from previous papers in which these losses was too much high for THz wave guidance. Then we have designed rotate hexagonal core and octagonal cladding with 8% PML of total fiber radius. This design gives a lower effective material loss and comparatively higher mode power propagation as well as a flattened dispersion gained over the frequency range 0.95-1.25 THz.