The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Xue Hui-feng - One of the best experts on this subject based on the ideXlab platform.
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Simulation of Groundwater Resources Reserve Capacity Based on System Dynamics
Computer Simulation, 2012Co-Authors: Xue Hui-fengAbstract:Groundwater resources reserve Capacity is a quantitative description of regional groundwater exploitation.Groundwater resources reserve Capacity study is very important.In this paper,we combined the qualitative and quantitative methods to establish the groundwater resources reserve Capacity System dynamics model,and simulated a series of indexes of different developing tactics for Shaanxi Province from 2011 to 2025.On this basis,we adopted the comprehensive evaluation method to measure the capability of each tactic in different solution,and finally obtained the reserve states.The simulation results show that,the System dynamics model can simulate and adjust the groundwater resources reserve Capacity.The results can provide a theoretical basis for making the groundwater development and utilization plan of Shaanxi Province.
Erma Suryani - One of the best experts on this subject based on the ideXlab platform.
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dynamic simulation model of air cargo demand forecast and terminal Capacity planning
Simulation Modelling Practice and Theory, 2012Co-Authors: Erma Suryani, Shuoyan Chou, Chihhsien ChenAbstract:This paper establishes an approach to forecast air cargo demand related to terminal Capacity expansion. To balance Capacity and demand, it is required to forecast the future demand based on optimistic and pessimistic projections to decide when and how much, the airport should expand the Capacity. System dynamics simulation model can provide reliable forecast and generate scenarios to test alternative assumptions and decisions. It was found that GDP and FDI play an important role in fostering the demand. Terminal expansion would be required in 2018 based on the optimistic projection; meanwhile, based on pessimistic projection, the Capacity can meet demand in 2030, which means no need to increase the Capacity.
Edward K. Vogel - One of the best experts on this subject based on the ideXlab platform.
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Event-related potential measures of visual working memory.
Clinical EEG and neuroscience, 2006Co-Authors: Trafton Drew, Andrew Mccollough, Edward K. VogelAbstract:Visual working memory is a limited Capacity System that temporarily maintains information about objects in the immediate visual environment. Psychophysical experiments have shown that most people a...
Vu Duong - One of the best experts on this subject based on the ideXlab platform.
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The concept of integrated air traffic control wake vortex safety and Capacity System
Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems, 1Co-Authors: P. Choroba, Vu DuongAbstract:International regulations require commercial airliners to be separated in flight by up to six nautical miles (11.12 km) due to the potential hazard caused by the swirling air left in their wakes. This 'wake vortex' is now the subject of intense worldwide research to understand the nature of the phenomenon and find ways of making air travel safer while reducing congestion around airports. "With the world airline fleet expected to double in size over the next 15 years and the giant A380 entering service in 2005, solutions to the wake-vortex problem cannot come too soon for the aerospace industry and therefore there is a strong need for developing a dynamic air traffic control wake vortex safety and Capacity System." This paper describes the concept of integrated transportation System regarding the current state-of-the-art technologies.
Grégoire Winckelmans - One of the best experts on this subject based on the ideXlab platform.
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ATC-Wake: Integrated Wake Vortex Safety and Capacity System
The Journal of Air Traffic Control, 2007Co-Authors: L.j.p. Speiker, A. Vidal, Frédéric Barbaresco, Michael Frech, H. Barny, Grégoire WinckelmansAbstract:With the steady increase in air traffic, civil aviation authorities are under continuous pressure to increase aircraft handling Capacity. One potential approach is to reduce the separation distance between aircraft at takeoff and landing witliout compromising safety. ATC-Wake aims to develop and build an integrated System for ATC (Air Traffic Control) that would allow variable aircraft separation distances, as opposed to the fixed distances presently applied at airports. The ATC-Wake project has developed and built an integrated ATC Wake Vortex Safety and Capacity platform. A variety of subSystems is integrated and used within a test bed role: - To evaluate the interoperability of ATC-Wake with existing ATC Systems currently used at various European airports; - To assess the safety and Capacity improvements that can be obtained by local installation of the ATC-Wake System at various European airports; - To evaluate operational usability and acceptability of the ATC-Wake System; The ATC-Wake System is used in the planning phase where weather and wake vortex forecast information are used together with aircraft separation rules to establish the arrival and/or departure sequence. For approaches, the aim is to manage separation distances down to 2.5 nautical miles, in favorable weather conditions, for all aircraft types regardless of size. For departures, the aim is to reduce the time separation between departing aircraft to 90 seconds (in favorable wind conditions). Weather nowcasting and wake vortex prediction and detection information is used in the tactical phase to monitor and control safe separation. Wind forecast data is used to determine time frames suitable for reduced separation. Criteria on crosswind and associated safe separation minima are derived from safety assessment results obtained with the NLR WAke Vortex Induced Risk assessment (WAVIR) methodology. As main conclusion the ATC-Wake technical and operational feasibility analyses and the safety and Capacity studies have built sufficient confidence in the operational concept and System design for the application of reduced separations to represent a sound evolution from existing ATC procedures and working practices, to deliver significant benefits for runway throughput and average delay per flight without major rework to the current ATC Systems,while maintaining safety. The next step will be to complete the validation through production of a Safety Case, Human Factors Case, Business Case, and a Technology Case towards installation of the ATC-Wake at one or more European airports. The best would be to continue with airport shadow mode field trials, i.e., with direct involvement of airports and air traffic control centers.
