The Experts below are selected from a list of 29307 Experts worldwide ranked by ideXlab platform
Subhayu Bandyopadhyay - One of the best experts on this subject based on the ideXlab platform.
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the effects of terror on international air Passenger transport an empirical invstigation
Social Science Research Network, 2017Co-Authors: Devashish Mitra, Cong S Pham, Subhayu BandyopadhyayAbstract:This paper presents a theoretical model (adapted from the structural gravity model by Anderson and van Wincoop, 2003) to capture the effects of terrorism on air Passenger Traffic between nations affected by terrorism. We then use equations derived from this model, in conjunction with alternative functional forms for trade costs, to estimate the effects of terrorism on bilateral air Passenger flows from 57 source countries to 25 destination countries for the period of 2000 to 2014. We find that an additional terrorist incident results in approximately a 1.2% decrease in the bilateral air Passenger transport per unit distance while doubling of the accumulated terrorist incidents during the past 5 years reduces it by 18%. Terrorism adversely impacts the bilateral air Passenger transport per unit distance both by reducing national output and especially by increasing psychological distress, which could be an important contributing factor in perceived travel costs. Last but not the least, we show that the responsiveness of international air travel to terrorism critically depends on the nature of the terrorist attacks. Specifically, international air Passenger transport is found to be extremely sensitive to fatal terrorist attacks and terrorist attacks of targets such as airports, transportation or tourists.
Devashish Mitra - One of the best experts on this subject based on the ideXlab platform.
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the effects of terror on international air Passenger transport an empirical invstigation
Social Science Research Network, 2017Co-Authors: Devashish Mitra, Cong S Pham, Subhayu BandyopadhyayAbstract:This paper presents a theoretical model (adapted from the structural gravity model by Anderson and van Wincoop, 2003) to capture the effects of terrorism on air Passenger Traffic between nations affected by terrorism. We then use equations derived from this model, in conjunction with alternative functional forms for trade costs, to estimate the effects of terrorism on bilateral air Passenger flows from 57 source countries to 25 destination countries for the period of 2000 to 2014. We find that an additional terrorist incident results in approximately a 1.2% decrease in the bilateral air Passenger transport per unit distance while doubling of the accumulated terrorist incidents during the past 5 years reduces it by 18%. Terrorism adversely impacts the bilateral air Passenger transport per unit distance both by reducing national output and especially by increasing psychological distress, which could be an important contributing factor in perceived travel costs. Last but not the least, we show that the responsiveness of international air travel to terrorism critically depends on the nature of the terrorist attacks. Specifically, international air Passenger transport is found to be extremely sensitive to fatal terrorist attacks and terrorist attacks of targets such as airports, transportation or tourists.
Matti Lehtonen - One of the best experts on this subject based on the ideXlab platform.
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impact of daily Passenger Traffic on energy consumption of intermittent operating escalators
Energy and Buildings, 2017Co-Authors: Semen Uimonen, Marja-liisa Siikonen, Toni Tukia, Matti LehtonenAbstract:Abstract Currently, intermittent-operating escalators are gaining popularity on the market. The energy consumption of such devices highly relates to the Passenger Traffic profile during a day. This paper models the energy consumption of intermittent-operating escalators with four different Passenger profiles and analyzes the resulting differences in the daily electricity consumption. The Passenger profiles and their impact on escalator energy consumption are based on multiple long-term measurements and previous research studies. The results indicate that Passenger volumes and density during a day affect the overall energy consumption drastically. The main reason for the differences is the principle of intermittent-operating escalators, the “power demand cycle”, along with the Variable Speed Drive.
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explicit method to predict annual elevator energy consumption in recurring Passenger Traffic conditions
Journal of building engineering, 2016Co-Authors: Toni Tukia, Marja-liisa Siikonen, Semen Uimonen, Harri Hakala, Claudio Donghi, Matti LehtonenAbstract:Abstract This paper proposes a method for simple projecting of annual elevator electricity consumption based on short-term energy measurements and identifies challenges in the determination of actual energy consumption based on kWh meter readings. The study also analyzes the impact of the employed elevator technology, building type, and seasonal variations in elevator usage on the calculation of the annual consumption. Thus, the method can be adopted in different regions with varying elevator usage. The approach employs elevator specific daily energy consumptions measured on the prevailing day types. The reliability of the proposed approach was analyzed and the performance compared to actual measured annual consumption and estimates provided by commonly adopted energy efficiency classification schemes, VDI 4707-1:2009 and ISO 25745-2:2015. The results of the monitored office elevator indicated that the proposed method performs generally better than the competing approaches.
Pradeep Patel - One of the best experts on this subject based on the ideXlab platform.
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JRC2010-36036 ESTIMATING MAINTENANCE COSTS FOR MIXED HIGHER SPEED Passenger AND FREIGHT RAIL CORRIDORS
2016Co-Authors: Pradeep PatelAbstract:In order to reduce the cost of new intercity Passenger rail corridors, the operation of higher speed Passenger networks on existing freight corridors is being examined and considered. The issues to be addressed in such operations include the one-time upgrade of the track to allow for this higher speed Passenger Traffic and the ongoing maintenance costs necessary to maintain this track for the mixed higher speed Passenger and freight operations. This latter issue is usually addressed in the access agreements for the corridor, and must include how these costs are to be shared. A recent US Federal Railroad Administration study specifically addressed the issue of “steady state ” maintenance costs for mixed use corridors consisting on this class of higher speed Passenger operations and concurrent freight operations
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estimating maintenance costs for mixed higher speed Passenger and freight rail corridors
2010 Joint Rail Conference Volume 2, 2010Co-Authors: Allan M Zarembski, Pradeep PatelAbstract:In order to reduce the cost of new intercity Passenger rail corridors, the operation of higher speed Passenger networks on existing freight corridors is being examined and considered. The issues to be addressed in such operations include the one-time upgrade of the track to allow for this higher speed Passenger Traffic and the ongoing maintenance costs necessary to maintain this track for the mixed higher speed Passenger and freight operations. This latter issue is usually addressed in the access agreements for the corridor, and must include how these costs are to be shared. A recent US Federal Railroad Administration study specifically addressed the issue of “steady state” maintenance costs for mixed use corridors consisting on this class of higher speed Passenger operations and concurrent freight operations, to include heavy axle load freight operations. The result of that study was a “planner’s handbook” for estimating these track maintenance costs, as part of the overall analysis of the feasibility and cost of operating higher speed Passenger Traffic on existing freight corridors. This paper presents the methodology used in the development of the methodology for estimating maintenance costs for mixed higher speed Passenger and freight rail corridors (Classes 4, 5 and 6). Specifically, it addresses the estimation of these “steady state” infrastructure maintenance costs for a range of operating scenarios with different combination of Passenger and freight Traffic densities and operating speeds. These infrastructure costs include track, bridge and building (B&B), and communications and signal (C&S) costs. The resulting costs are presented as a set of cost matrices both in terms of a total cost per track mile and in terms of cost per Passenger train mile. The cost matrices cover a range of combinations of Traffic and track configuration, with minimum and maximum costs developed for each cell in the cost matrices. The minimum costs are based on maintenance standards geared to typical Class I freight railroad practice, such as where Passenger trains currently operate on a freight railroad right of way, while the maximum costs reflect maintenance practices on existing high speed railroad track. This paper provides a description of the analytic models used to generate the costs, and the process by which those models were calibrated to actual cost data to develop costs for a wide range of Traffic and track combinations. Sample application of the methodology to include several proposed mixed use corridors is also presented.Copyright © 2010 by ASME
Semen Uimonen - One of the best experts on this subject based on the ideXlab platform.
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impact of daily Passenger Traffic on energy consumption of intermittent operating escalators
Energy and Buildings, 2017Co-Authors: Semen Uimonen, Marja-liisa Siikonen, Toni Tukia, Matti LehtonenAbstract:Abstract Currently, intermittent-operating escalators are gaining popularity on the market. The energy consumption of such devices highly relates to the Passenger Traffic profile during a day. This paper models the energy consumption of intermittent-operating escalators with four different Passenger profiles and analyzes the resulting differences in the daily electricity consumption. The Passenger profiles and their impact on escalator energy consumption are based on multiple long-term measurements and previous research studies. The results indicate that Passenger volumes and density during a day affect the overall energy consumption drastically. The main reason for the differences is the principle of intermittent-operating escalators, the “power demand cycle”, along with the Variable Speed Drive.
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explicit method to predict annual elevator energy consumption in recurring Passenger Traffic conditions
Journal of building engineering, 2016Co-Authors: Toni Tukia, Marja-liisa Siikonen, Semen Uimonen, Harri Hakala, Claudio Donghi, Matti LehtonenAbstract:Abstract This paper proposes a method for simple projecting of annual elevator electricity consumption based on short-term energy measurements and identifies challenges in the determination of actual energy consumption based on kWh meter readings. The study also analyzes the impact of the employed elevator technology, building type, and seasonal variations in elevator usage on the calculation of the annual consumption. Thus, the method can be adopted in different regions with varying elevator usage. The approach employs elevator specific daily energy consumptions measured on the prevailing day types. The reliability of the proposed approach was analyzed and the performance compared to actual measured annual consumption and estimates provided by commonly adopted energy efficiency classification schemes, VDI 4707-1:2009 and ISO 25745-2:2015. The results of the monitored office elevator indicated that the proposed method performs generally better than the competing approaches.
