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Bwambale Andrew Choudhury Charisma F. Hess Stephane Iqbal Md. Shahadat 《Transportation》2021,48(5):2287-2314
Transportation - Traditional approaches to travel behaviour modelling primarily rely on household travel survey data, which is expensive to collect, resulting in small sample sizes and infrequent... 相似文献
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Kho Shahriar Iqbal Gabriele Bulian Kazuhiko Hasegawa Md. Mashud Karim Zobair Ibn Awal 《Journal of Marine Science and Technology》2008,13(3):282-290
On the basis of previous studies, a series of hazards involving the typical small inland passenger ferries operating in inland
Bangladeshi waters have been identified. In particular, stormy weather conditions, overloading, and the risk of crowding to
one side have been determined as the typical events that are likely to lead to capsizing in the intact condition. In this
article, possible hazard mitigation measures are discussed, both from the regulatory and from the design point of view, for
a small inland ferry that is very similar to one that actually capsized in the past. The addressed design options involve
ballasting and hull modification by means of additional buoyancy above the waterline. From a regulatory point of view, it
is proposed that the present weather criterion in force in Bangladesh be modified by increasing the wind speed to be accounted
for and by considering the concurrent effects of wind, rolling, and the crowding of people to one side. 相似文献
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Predicting the probability of traffic breakdown can be used as an important input for creating advanced traffic management strategies that are specifically implemented to reduce this probability. However, most, if not all, past research on the probability of breakdown has focused on freeways. This study focuses on the prediction of arterial breakdown probability based on archived traffic data for use in real-time transportation system operations. The breakdown of an arterial segment is defined in this study as a segment's operating condition under the level of service F according to the highway capacity manual threshold, although any other level of service could be used. Data from point detection and automatic vehicle identification matching technologies are aggregated in space and time to allow their use as inputs to the prediction model. A decision tree approach, combined with binary logistic regression, is used in this study to predict the breakdown probability based on these inputs. The model is validated using data not used in the development of the model. The research shows that the root mean square error and the mean absolute error of the prediction was 13.6 and 11%, respectively. The analysis also shows that the best set of parameters used in the prediction can be different for different links, due to the various causes of breakdown and characteristics of different links. Predicting the probability of breakdown in ahead of time will allow the agencies to change the signal-timing plan that can delay or eliminate the breakdown. 相似文献
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Kho Shahriar Iqbal Gabriele Bulian Kazuhiko Hasegawa Md. Mashud Karim Zobair Ibn Awal 《Journal of Marine Science and Technology》2008,13(3):270-281
The safety of inland passenger vessels operating in Bangladesh has been investigated. By thorough analysis of past accident
data, the main causes of intact stability failures have been determined: adverse weather conditions and overloading, likely
resulting in crowding to one side. Historical series of wind data were gathered and their analysis suggests that an increase
in the wind speed presently used in the Weather Criterion in force in Bangladesh could be advisable. A model of a small passenger
ship typically operated in Bangladesh has been analyzed in order to identify the most relevant hazards under intact ship conditions.
A strongly jeopardizing effect of overloading under intact ship conditions has been detected when analyzing the hazard from
the crowding of people to one side. 相似文献
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Machine learning has been widely applied to deal with problems in complex environment such as RoboCup, which is assumed as the ideal platform for research on AI and robotic. In RoboCup simulation league,software agents play soccer games on an official soccer server over the network. When constructing these software agents, issues in area of agents learning techniques arise to satisfy the properties specified by agent theorists. This paper presented an overview of the agents learning used in the simulator teams. Many kinds of agents learning techniques were reported and compared. It also provided open questions for discussing and pointed out some possible answers to verify in near future. 相似文献
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IntroductionRobot Soccer World Cup( Robo Cup) ,an im-portant application in both Artificial Intelligence( AI) and robotics,has been developed rapidly inrecentyears. The tournament of Robo Cup Simula-tion League uses the soccer server system as thestandard environment. The soccer server systemprovides a rich and challenging multi- agent,real-time domain[1] 。 Every client should finish reason-ing,calculation and send movement commands tothe soccer server in a configured simulation step,ot… 相似文献
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The comparison of land and inland water transportation from economical and ecological points of view is discussed. Required
freight rates for trucks and ships are calculated and compared to find which has economic superiority. From the environmental
impacts of these two transportation types, the comparative environmental destruction indices for two different time-durations
are estimated. All these investigations were conducted for the Yokohama–Fukuoka route in Japan. Life cycle impact assessment,
a very useful tool for quantitatively evaluating the environmental influence of a product, was used to compare the environmental
burden imposed by these types of transportation. Finally, the way that these results can be used for inland transportation
system planning is discussed.
Received: January 21, 2000 / Accepted: June 27, 2000 相似文献
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A model to estimate and compare the ecological impact and economic feasibility of a land transportation system (trucks) and
a marine transportation system (cargo ships) was developed and presented in a previous report.1 Three different comparison indices—environmental, economic, and customer service—were used to evaluate and compare their
ecological impacts and determine their economic superiority. In this article, a single comparison index is proposed and assessed
for the two transportation systems. The estimates were made for nine different routes in Japan. A simple mathematical model
of the whole methodology is given. The sensitivity of the weighting factors used in the comparison method was analyzed. The
social cost saving in monetary terms through a modal shift is also presented.
Received: February 15, 2001 / Accepted: September 19, 2001 相似文献
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