A SPATIAL ANALYSIS ON THE PROVISION OF URBAN PUBLIC SERVICES AND THEIR DEFICIENCIES: A STUDY OF SOME SELECTED BLOCKS IN KHULNA CITY, BANGLADESH

In most of the cities in Bangladesh, there is a considerable lacking in providing public services comparing with the demand. This study aims to identify the deficiencies in providing public services in three selected blocks of Khulna city, Bangladesh. Blocks are considered here as an individual small administrative unit within the jurisdiction of Khulna City Corporation. First the study identified the spatial concentration of the services among the blocks. The comparative situation of the blocks in terms of public services was viewed by location quotient method and Gini coefficient and neighbourhood standard were consider to identify the deficiencies. The study found that two of the blocks are comparatively developed while the other one lag far behind the mean level of development of the city. Lastly on the basis of population and space standard, required facilities for each of the blocks were calculated.Urban Services, Defficiencies, Spatial Analysis, Khulna City.

SERVICE QUALITY ATTRIBUTES AFFECTING THE SATISFACTION OF RAILWAY PASSENGERS OF SELECTIVE ROUTE IN SOUTHWESTERN PART OF BANGLADESH

With increased pace of urbanization and economic growth, attraction and dependency between different linking regions has also increased. Transportation have performed very crucial roles from very early accelerating the sharing of economic and development benefit of connecting spatial regions. Railway has been proved as a potential sector for drawing economic and development benefits for various countries. But less emphasis have been given in improvement of railway sector mainly in railway service in Bangladesh compare with road and which cause failed to draw proper economic benefit from the sector. This study has aimed to focus on the railway transportation sector and to develop a model defining the relationship between overall satisfaction and service quality attributes in a selective route from Khulna to Rajshahi in southwestern zone of Bangladesh so that it can reinforce further improvement process. Findings show that, overall service satisfaction depend on eight distinct service quality attributes. It implies the service with worst situation, overall satisfaction of service and need for priority improvement to support further orientation, addition and betterment of service to draw maximum economic and development benefit for those linking regions.Urbanization, Economic growth, Attraction, Linking region, Overall satisfaction

UTILIZING URBAN SPACE FOR BETTER TRAFFIC MANAGEMENT- A STUDY OF KHULNA CENTRAL BUSINESS DISTRICT, BANGLADESH

A city center or central business district (CBD) is the heart of a city. As a large number of people and business concentrates there for different purposes it deserves special consideration from city planning. Most crucial problem of CBD is that much development blurs beside the streets and it disrupts circulation and communication. The CBD area of Khulna already coped up with this problem. In the Khulna CBD area also faces this sort of traffic problems and to minimize these traffic problems, utilization effectively of urban space through different design considerations is required. This paper also tries to develop layout plan focusing the maximum utilization of the urban space, considered different design criteria and it can be used as a tool to reduce the traffic problems of the CBD area. Various street problems are identified which are responsible for the inefficient circulation system of the study area. It is also identified that street problems are related with design elements. As in the study area, the conditions of urban design elements are poor they can not ensure proper canalizations both for pedestrian and vehicular traffic. In the time of urban design element analysis focus has been given on the street management respect. The proposals included in this research paper will be helpful for improvement of the present level of function as well as can be used to develop development control rules.Urban space, Traffic Management & Central Business District

ADAPTATION OF ANDRAGOGY IN THE EDUCATION SYSTEM OF BANGLADESH: EMULATING ANDRAGOGICAL APPROACHES OF SOUTH-EAST ASIA

Andragogy is the art and science of assisting people in learning, as well as the study of adult education philosophy, procedures, and technology. Andragogy and economy have relation through adult education and higher education. Adult education and economic development strengthen one another. The objectives of this study are- to investigate situation of andragogy in particular fields of education of Bangladesh, to identify the ways about how approaches of andragogy in South-East Asia be redesigned in Bangladesh as a part of improvement or adaptation in those particular fields. The qualitative approach is followed in this study. Bangladesh along Vietnam and the Philippines are the countries identified as emerging economies. Situation of implementation of andragogical approach in particular educational areas of Bangladesh is not the way that is naturally expected from an emerging economy. Though andragogy has been successfully introduced and adapted in western especially European education system, as a country growing both economically and socially, Bangladesh just cannot blindly adopt the process because of the differences between economies of Bangladesh and European region. So, it will be rational to adapt and improvise the andragogical approaches followed by Bangladesh’s neighboring countries which are attaining financial success and have gone through similar economic phase that resembles to economy of Bangladesh. As education system of other South Asian countries is as fragmented as Bangladesh in the case of andragogy, South East Asian countries can be better inspiration.  Article visualizations

Performance Analysis of Parametric Channel Estimation for 3D Massive MIMO/FD-MIMO OFDM Systems.

With the promise of meeting future capacity demands for mobile broadband communications, 3D massive-MIMO/Full Dimension MIMO (FD-MIMO) systems have gained much interest among the researchers in recent years. Apart from the huge spectral efficiency gain offered by the system, the reason for this great interest can also be attributed to significant reduction of latency, simplified multiple access layer, and robustness to interference. However, in order to completely extract the benefits of massive-MIMO systems, accurate channel state information is very critical. In this paper, a channel estimation method based on direction of arrival (DoA) estimation is presented for massive-MIMO OFDM systems. To be specific, the DoA is estimated using Estimation of Signal Parameter via Rotational Invariance Technique (ESPRIT) method, and the root mean square error (RMSE) of the DoA estimation is analytically characterized for the corresponding MIMO-OFDM system

A comparative study of mono-crystalline and poly-crystalline silicon solar cells under different climatic conditions of Bangladesh

This thesis report is submitted in partial fulfillment of the requirements for the degree of Bachelor of Science in Electrical and Electronic Engineering, 2016.Cataloged from PDF version of thesis report.Includes bibliographical references (page 69).The objective of our thesis is to analyze the performance of two types of silicon solar panels- mono-crystalline and polycrystalline under different climatic conditions of Bangladesh. Temperature, wind speed, solar irradiation affects the performance of solar panel. In our work different parameters of the solar cells such as open circuit voltage, short circuit current, series resistance of a photovoltaic cell, maximum power output point, fill factor, maximum working current, and maximum working voltage have been calculated under different temperature and illumination conditions. Experiments have been conducted in both indoor and outdoor. Series resistance was measured in dark condition. It showed an increase in series resistance for both mono-crystalline and polycrystalline solar panel with the increment of temperature. Current sensitivity of the panels was measured with the change of temperature under same illumination condition. Energy was calculated utilizing the data taken in the month of June-July. It was observed that polycrystalline panel has 4.3% energy level more than the mono crystalline panel.AfifuzamanMahmud HossainRubayet RehanB. Electrical and Electronic Engineerin

Integrated Waveguide Interfaces for Quantum Optics Applications

This dissertation explores the integration and interfacing of a variety of photonic devices with optical waveguides, aiming to minimize the optical losses and physical footprint of such systems. The specific investigations include interfacing solid-core and hollow-core optical fibers, development of a monolithic single-photon source based on a quantum dot embedded in a semiconductor nanowire aligned with a single-mode fiber, a proposal for a waveguide-integrated power limiter that can protect detectors in a quantum key distribution (QKD) network, and integrating superconducting-nanowire single photon detectors (SNSPD) with laser-written waveguides. Hollow-core photonic-crystal fibers (HCPCFs), which can allow simultaneous tight confinement of both photons and atoms in their hollow core, offer a platform for enhancing interactions between light and atomic ensembles. However, interfacing HCPCFs with conventional solid core (SC) fibers presents a unique set of challenges including significant losses in the joint region due to partial melting and deformation of the photonic crystal during the conventional arc-fusion splicing process. We address this issue with a lithographically defined, vacuum-compatible on-chip structure acting as a mechanical splicer that allows efficient injection of light from a SC fiber to a HCPCF and vice versa, with maximum observed light injection efficiency from a single-mode SC fiber into a HCPCF of 90%. Single photon sources (SPS) are often required in photonic quantum information applications. Among various candidates, quantum dots (QD) embedded in tapered semiconductor nanowires have demonstrated excellent progress so far to realize a SPS. However, the overall collection efficiency of the emitted photon into a single mode fiber remains as one of the major challenges, mainly due to loss in the intermediate optical components. We design a complete scheme for high efficiency light coupling from such quantum dot to a single mode fiber. We optimize the geometry of the tapered nanowire to achieve a low numerical aperture Gaussian output mode profile from the wire tip and use a lithographically defined structure to align the SMF collecting the emitted photons. A graded-index multimode fiber acting as a lens is spliced on the SMF end for high efficiency coupling of light from the nanowire into the fiber. Extremely sensitive photonic devices are often used in quantum optics applications for detection and manipulation of signals with very low power. To prevent malfunction or even damage to these sensitive devices by excess incident power, we propose an optical power limiter based on a pair of cavities integrated with optical waveguides. Such power limiter can be used to protect sensitive electro-optical devices and prevent certain types of attacks on QKD systems. Lastly, a 2D photonic lattice formed by laser-written waveguides in bulk glass can be used as an analogue quantum simulator. We explore the integration of SNSPDs with laser-written waveguides with the goal of making this platform fully on-chip