Browsing by Author "Rahman, Md. Mahabub"

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    An Investigation on Railway Ridership Response Under Different Scenarios
    (Daffodil International University, 2022-01-10) Shawon, Md. Injamul Haque; Rahman, Md. Mijanur; Rahman, Md. Mahabub
    Railway is a mass transit system, which has high ridership potential. Compare to other competitive mode of transportation for long distance travel, train is inexpensive, takes smaller space and haul large number of passengers. Since, train has separate right of way, it does not interfere or share with other modes. Railway is an effective congestion reliving alternative. Bangladesh is a developing country and train is the most preferred public transit mode for public. It is essential to assess preference sensitivity of train. Several factors can influence train mode choice. Those are—departure time (DT), train fare (TF), travel time (TT) and service quality (SQ). The study investigated sensitivity of these factors over train ridership. We carried out a question survey on 130 passengers on two different routes, Dhaka to Sylhet and Dhaka to Rajshahi. Almost half of the passengers are income within 30-60k BDT per month. Almost 40% of the respondents are captive train rider in this study. Our study found that increase of departure time and travel time delay <30 minutes have very small influence on ridership. However, ridership decreases very rapidly with the increase of departure time and increase of travel time delay more than 30 minutes. All of the factors of ridership are linearly related with %ridership. Service quality of train is categorized into scale 1 to 4. 1 stands for AC train service with no standing passengers, whereas, 4 stands for non-AC train service with large standing passengers. Ridership declining straightly with the lowering service quality (SQ). 10% increase in departure time will decrease ridership by 14% and 10% increase in fare will decrease ridership by 6%. %Ridership has little influence, if fare increase is <50 BDT. However, if train fare increased by 100 BDT or more, the reduction of %ridership is very high and people are reluctant to travel on train. From our study since the above-mentioned factors have strong influence on train ridership, therefore, it provides fruitful information on strategic planning to promote train service.
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    Study on the Denim Fabric Properties Changes Due to Different Washing Process
    (Daffodil International University, 2021-03-03) Rahman, Md. Mahabub; Ahsan, S.M Tohid; Roknuzzaman, Md.
    For completing the project title as “Study on the Denim Fabric Properties changes due to different washing process” we have randomly selected three different types of denim fabric. These are Stretch Denim Fabric (82% Cotton, 17%Polyester&1%Elastane), Non-Stretch Denim Fabric (59% Cotton& 41% Polyester) & Tencel Denim Fabric (100% Lyocell. Determine the changes of fabric parameters we have also selected three types of washing process for our work. These are Dark Blue Stone Wash, Blue Stone Wash, Blue Bleached Wash. Pretreatment was desizing and after treatment is silicon softener. After washing different samples from different washing are going to express different physical properties. Finding out the different physical properties of denim for different wash and compare with each change is the major part of that research.