A Brief Study on Capacity Loss at Major Dhaka City Roads
Reasat-E-Noor,
Mohiuddin Imran,
Md. Imran Hossain
Issue:
Volume 2, Issue 1, March 2016
Pages:
1-7
Received:
13 February 2016
Accepted:
17 February 2016
Published:
26 February 2016
DOI:
10.11648/j.ijtet.20160201.11
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Abstract: At present, one of the most important phenomena in Dhaka city is traffic congestion which is the result of high amount of existing vehicles in contrast to inadequate roadway facilities. Though there are a set of factors associated to this, one of the major reasons is the inability to use the city roads to their highest capacities. This study is based on finding the major players behind the growing phenomenon of capacity loss in major city roads. For this, seven major roads have been taken into consideration. A survey has been conducted on different roads of Dhaka City different factors playing key role to reduce the overall capacity have been identified. A group of data has been obtained from all of them to find the capacity reduced from all these roads and the usable capacity available. Different behaviors like parking on street, near intersections, existence of shops near roads, periodic maintenance, lack of facilities for waste disposal and several other factors have been identified for the overall situation. From this study, it has been found that the percentage of avg. capacity loss of roads in Dhaka is 12.91%, whereas capacity loss due to On/Off street construction have found to be 13%. On street parking causes more than 10% of loss of capacity. Water logging causes nearly 8% and poor maintenance contributes to about 7% of total capacity loss. Overall, the study has shown some interesting findings regarding major city road conditions and provided adequate recommendations for improvement.
Abstract: At present, one of the most important phenomena in Dhaka city is traffic congestion which is the result of high amount of existing vehicles in contrast to inadequate roadway facilities. Though there are a set of factors associated to this, one of the major reasons is the inability to use the city roads to their highest capacities. This study is bas...
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Determination of Added Mass and Inertia Moment of Marine Ships Moving in 6 Degrees of Freedom
Do Thanh Sen,
Tran Canh Vinh
Issue:
Volume 2, Issue 1, March 2016
Pages:
8-14
Received:
16 March 2016
Accepted:
30 March 2016
Published:
25 April 2016
DOI:
10.11648/j.ijtet.20160201.12
Downloads:
Views:
Abstract: When a ship moves in water with acceleration or deceleration, quantities of fluid moving around the hull creating additional hydrodynamic forces acting on the hull. It is imagined as the added mass which increases the total system mass and inertia moment. In order to establish the mathematical model for ship motion, the added components need to be determined. For a particular ship, these hydrodynamic components can be obtained by experiment. However, for ship simulation especially at the initial design stage it is necessary to calculate and estimate by theoretical method. This study aims to find out a general method to calculate all components of added mass and inertia moment in 6 degrees of freedom for simulating ship movement.
Abstract: When a ship moves in water with acceleration or deceleration, quantities of fluid moving around the hull creating additional hydrodynamic forces acting on the hull. It is imagined as the added mass which increases the total system mass and inertia moment. In order to establish the mathematical model for ship motion, the added components need to be ...
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